using python 3.6 (as requirement as well on production)

Add README.md
further advanced state api and stream checks
2020-03-12 11:38:19 +01:00 · 2020-03-12 11:28:39 +01:00 · 2020-02-25 17:00:01 +01:00 · 2020-02-24 16:00:41 +01:00 · 2020-02-24 09:26:47 +01:00 · 2020-02-21 17:10:14 +01:00
78 changed files with 7407 additions and 495 deletions
--- a/.env
+++ b/.env
@@ -0,0 +1 @@
+PYTHONPATH=${PYTHONPATH}:${PWD}/..
--- a/.gitattributes
+++ b/.gitattributes
@@ -0,0 +1,6 @@
+backend/models/initial_recorders.json filter=git-crypt diff=git-crypt
+#backend/models/initial_recorders.json filter=openssl diff=openssl
+backend/config.py filter=git-crypt diff=git-crypt
+#backend/config.py filter=openssl diff=openssl
+[merge]
+	renormalize=true
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,121 @@
+app.db
+# Byte-compiled / optimized / DLL files
+.idea
 __pycache__/
+node_modules/
+frontend/node_modules/
+backend/uploads/*
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+.hypothesis/
+.pytest_cache/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# celery beat schedule file
+celerybeat-schedule
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+package-lock.json
+logs
--- a/32
+++ b/32
@@ -4,15 +4,43 @@ verify_ssl = true
 name = "pypi"

 [packages]
+ffmpeg-python = "*"
 flask = "*"
 flask-httpauth = "*"
-flask-restplus-patched = "*"
 flask-sqlalchemy = "*"
 flask-login = "*"
 pyjwt = "*"
 passlib = "*"
+sqlalchemy = "*"
+sqlalchemy-migrate = "*"
+flask-script = "*"
+flask-migrate = "*"
+coverage = "*"
+flask-testing = "*"
+flask-pyoidc = "*"
+python-jose = "*"
+flask-jwt-extended = "*"
+ssh2-python = "*"
+update = "*"
+flask-cors = "*"
+html5lib = "*"
+beautifulsoup4 = "*"
+flask-socketio = "*"
+eventlet = "*"
+ics = "*"
+coloredlogs = "*"
+pythonping = "*"
+scapy = "*"
+python-socketio = {version = "*",extras = ["client"]}
+socketio-client = "*"
+websocket-client = "*"
+apscheduler = "*"
+pillow = "*"
+pydub = "*"
+simpleaudio = "*"
+flask-restx = "*"

 [dev-packages]

 [requires]
-python_version = "3.7"
+python_version = "3.6"
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,11 +1,11 @@
 {
    "_meta": {
        "hash": {
-            "sha256": "196d1a010314c8f16ccc747ed35b4821e8e3aa63f90ec2893123ea19c95935b1"
+            "sha256": "ed9faf5db1ecd9f6524b4e3903b2d2e3cfedff03a928c6921dd799bb1e4ed90b"
        },
        "pipfile-spec": 6,
        "requires": {
-            "python_version": "3.7"
+            "python_version": "3.6"
        },
        "sources": [
            {
@@ -16,85 +16,393 @@
        ]
    },
    "default": {
+        "alembic": {
+            "hashes": [
+                "sha256:791a5686953c4b366d3228c5377196db2f534475bb38d26f70eb69668efd9028"
+            ],
+            "version": "==1.4.1"
+        },
        "aniso8601": {
            "hashes": [
-                "sha256:29ad6be3828ab6ac2a31fd2876fd84477cde11890ffca7e8a9434aad5d4acec8",
-                "sha256:a5c7595bb65d3919a9944a759d907b57c4d050abaa0e5cf845e84c26cdfd1218"
+                "sha256:529dcb1f5f26ee0df6c0a1ee84b7b27197c3c50fc3a6321d66c544689237d072",
+                "sha256:c033f63d028b9a58e3ab0c2c7d0532ab4bfa7452bfc788fbfe3ddabd327b181a"
            ],
-            "version": "==5.1.0"
+            "version": "==8.0.0"
        },
-        "apispec": {
+        "apscheduler": {
            "hashes": [
-                "sha256:57a7b81fd19fff0663a7e5ffd196eaea79b5364151ed2b65533be36d55e0229c",
-                "sha256:b45def53903516e67e8584ee41f34bc60c3e4acace6892b69340293ea20f3caa"
+                "sha256:3bb5229eed6fbbdafc13ce962712ae66e175aa214c69bed35a06bffcf0c5e244",
+                "sha256:e8b1ecdb4c7cb2818913f766d5898183c7cb8936680710a4d3a966e02262e526"
            ],
-            "version": "==1.0.0"
+            "index": "pypi",
+            "version": "==3.6.3"
+        },
+        "arrow": {
+            "hashes": [
+                "sha256:4bfacea734ead51495dc47df00421ecfd4ca1f2c0fbe58b9a26eaeddedc31caf",
+                "sha256:67f8be7c0cf420424bc62d8d7dc40b44e4bb2f7b515f9cc2954fb36e35797656"
+            ],
+            "version": "==0.14.7"
        },
        "attrs": {
            "hashes": [
-                "sha256:69c0dbf2ed392de1cb5ec704444b08a5ef81680a61cb899dc08127123af36a79",
-                "sha256:f0b870f674851ecbfbbbd364d6b5cbdff9dcedbc7f3f5e18a6891057f21fe399"
+                "sha256:08a96c641c3a74e44eb59afb61a24f2cb9f4d7188748e76ba4bb5edfa3cb7d1c",
+                "sha256:f7b7ce16570fe9965acd6d30101a28f62fb4a7f9e926b3bbc9b61f8b04247e72"
            ],
-            "version": "==19.1.0"
+            "version": "==19.3.0"
+        },
+        "beaker": {
+            "hashes": [
+                "sha256:ad5d1c05027ee3be3a482ea39f8cb70339b41e5d6ace0cb861382754076d187e"
+            ],
+            "version": "==1.11.0"
+        },
+        "beautifulsoup4": {
+            "hashes": [
+                "sha256:05fd825eb01c290877657a56df4c6e4c311b3965bda790c613a3d6fb01a5462a",
+                "sha256:9fbb4d6e48ecd30bcacc5b63b94088192dcda178513b2ae3c394229f8911b887",
+                "sha256:e1505eeed31b0f4ce2dbb3bc8eb256c04cc2b3b72af7d551a4ab6efd5cbe5dae"
+            ],
+            "index": "pypi",
+            "version": "==4.8.2"
+        },
+        "certifi": {
+            "hashes": [
+                "sha256:017c25db2a153ce562900032d5bc68e9f191e44e9a0f762f373977de9df1fbb3",
+                "sha256:25b64c7da4cd7479594d035c08c2d809eb4aab3a26e5a990ea98cc450c320f1f"
+            ],
+            "version": "==2019.11.28"
+        },
+        "cffi": {
+            "hashes": [
+                "sha256:001bf3242a1bb04d985d63e138230802c6c8d4db3668fb545fb5005ddf5bb5ff",
+                "sha256:00789914be39dffba161cfc5be31b55775de5ba2235fe49aa28c148236c4e06b",
+                "sha256:028a579fc9aed3af38f4892bdcc7390508adabc30c6af4a6e4f611b0c680e6ac",
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+                "sha256:1cae98a7054b5c9391eb3249b86e0e99ab1e02bb0cc0575da191aedadbdf4384",
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+                "sha256:7e63cbcf2429a8dbfe48dcc2322d5f2220b77b2e17b7ba023d6166d84655da55",
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+                "sha256:c43866529f2f06fe0edc6246eb4faa34f03fe88b64a0a9a942561c8e22f4b71f",
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+                "sha256:cef128cb4d5e0b3493f058f10ce32365972c554572ff821e175dbc6f8ff6924f",
+                "sha256:cf16e3cf6c0a5fdd9bc10c21687e19d29ad1fe863372b5543deaec1039581a30",
+                "sha256:e56c744aa6ff427a607763346e4170629caf7e48ead6921745986db3692f987f",
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+                "sha256:f2b0fa0c01d8a0c7483afd9f31d7ecf2d71760ca24499c8697aeb5ca37dc090c"
+            ],
+            "version": "==1.14.0"
+        },
+        "chardet": {
+            "hashes": [
+                "sha256:84ab92ed1c4d4f16916e05906b6b75a6c0fb5db821cc65e70cbd64a3e2a5eaae",
+                "sha256:fc323ffcaeaed0e0a02bf4d117757b98aed530d9ed4531e3e15460124c106691"
+            ],
+            "version": "==3.0.4"
        },
        "click": {
            "hashes": [
-                "sha256:2335065e6395b9e67ca716de5f7526736bfa6ceead690adf616d925bdc622b13",
-                "sha256:5b94b49521f6456670fdb30cd82a4eca9412788a93fa6dd6df72c94d5a8ff2d7"
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+                "sha256:e345d143d80bf5ee7534056164e5e112ea5e22716bbb1ce727941f4c8b471b9a"
            ],
-            "version": "==7.0"
+            "version": "==7.1.1"
+        },
+        "coloredlogs": {
+            "hashes": [
+                "sha256:346f58aad6afd48444c2468618623638dadab76e4e70d5e10822676f2d32226a",
+                "sha256:a1fab193d2053aa6c0a97608c4342d031f1f93a3d1218432c59322441d31a505"
+            ],
+            "index": "pypi",
+            "version": "==14.0"
+        },
+        "coverage": {
+            "hashes": [
+                "sha256:15cf13a6896048d6d947bf7d222f36e4809ab926894beb748fc9caa14605d9c3",
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+                "sha256:c60097190fe9dc2b329a0eb03393e2e0829156a589bd732e70794c0dd804258e",
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+                "sha256:cd60f507c125ac0ad83f05803063bed27e50fa903b9c2cfee3f8a6867ca600fc",
+                "sha256:d513cc3db248e566e07a0da99c230aca3556d9b09ed02f420664e2da97eac301",
+                "sha256:d649dc0bcace6fcdb446ae02b98798a856593b19b637c1b9af8edadf2b150bea",
+                "sha256:d7008a6796095a79544f4da1ee49418901961c97ca9e9d44904205ff7d6aa8cb",
+                "sha256:da93027835164b8223e8e5af2cf902a4c80ed93cb0909417234f4a9df3bcd9af",
+                "sha256:e69215621707119c6baf99bda014a45b999d37602cb7043d943c76a59b05bf52",
+                "sha256:ea9525e0fef2de9208250d6c5aeeee0138921057cd67fcef90fbed49c4d62d37",
+                "sha256:fca1669d464f0c9831fd10be2eef6b86f5ebd76c724d1e0706ebdff86bb4adf0"
+            ],
+            "index": "pypi",
+            "version": "==5.0.3"
+        },
+        "cryptography": {
+            "hashes": [
+                "sha256:02079a6addc7b5140ba0825f542c0869ff4df9a69c360e339ecead5baefa843c",
+                "sha256:1df22371fbf2004c6f64e927668734070a8953362cd8370ddd336774d6743595",
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+                "sha256:7f09806ed4fbea8f51585231ba742b58cbcfbfe823ea197d8c89a5e433c7e912",
+                "sha256:90df0cc93e1f8d2fba8365fb59a858f51a11a394d64dbf3ef844f783844cc793",
+                "sha256:971221ed40f058f5662a604bd1ae6e4521d84e6cad0b7b170564cc34169c8f13",
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+                "sha256:b0de590a8b0979649ebeef8bb9f54394d3a41f66c5584fff4220901739b6b2f0",
+                "sha256:b43f53f29816ba1db8525f006fa6f49292e9b029554b3eb56a189a70f2a40879",
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+                "sha256:de96157ec73458a7f14e3d26f17f8128c959084931e8997b9e655a39c8fde9f9",
+                "sha256:df6b4dca2e11865e6cfbfb708e800efb18370f5a46fd601d3755bc7f85b3a8a2",
+                "sha256:ecadccc7ba52193963c0475ac9f6fa28ac01e01349a2ca48509667ef41ffd2cf",
+                "sha256:fb81c17e0ebe3358486cd8cc3ad78adbae58af12fc2bf2bc0bb84e8090fa5ce8"
+            ],
+            "version": "==2.8"
+        },
+        "decorator": {
+            "hashes": [
+                "sha256:41fa54c2a0cc4ba648be4fd43cff00aedf5b9465c9bf18d64325bc225f08f760",
+                "sha256:e3a62f0520172440ca0dcc823749319382e377f37f140a0b99ef45fecb84bfe7"
+            ],
+            "version": "==4.4.2"
+        },
+        "defusedxml": {
+            "hashes": [
+                "sha256:6687150770438374ab581bb7a1b327a847dd9c5749e396102de3fad4e8a3ef93",
+                "sha256:f684034d135af4c6cbb949b8a4d2ed61634515257a67299e5f940fbaa34377f5"
+            ],
+            "version": "==0.6.0"
+        },
+        "dnspython": {
+            "hashes": [
+                "sha256:36c5e8e38d4369a08b6780b7f27d790a292b2b08eea01607865bf0936c558e01",
+                "sha256:f69c21288a962f4da86e56c4905b49d11aba7938d3d740e80d9e366ee4f1632d"
+            ],
+            "version": "==1.16.0"
+        },
+        "ecdsa": {
+            "hashes": [
+                "sha256:867ec9cf6df0b03addc8ef66b56359643cb5d0c1dc329df76ba7ecfe256c8061",
+                "sha256:8f12ac317f8a1318efa75757ef0a651abe12e51fc1af8838fb91079445227277"
+            ],
+            "version": "==0.15"
+        },
+        "eventlet": {
+            "hashes": [
+                "sha256:658b1cd80937adc1a4860de2841e0528f64e2ca672885c4e00fc0e2217bde6b1",
+                "sha256:6c9c625af48424c4680d89314dbe45a76cc990cf002489f9469ff214b044ffc1"
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+            "index": "pypi",
+            "version": "==0.25.1"
+        },
+        "ffmpeg-python": {
+            "hashes": [
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+                "sha256:ac441a0404e053f8b6a1113a77c0f452f1cfc62f6344a769475ffdc0f56c23c5"
+            ],
+            "index": "pypi",
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        },
        "flask": {
            "hashes": [
-                "sha256:2271c0070dbcb5275fad4a82e29f23ab92682dc45f9dfbc22c02ba9b9322ce48",
-                "sha256:a080b744b7e345ccfcbc77954861cb05b3c63786e93f2b3875e0913d44b43f05"
+                "sha256:13f9f196f330c7c2c5d7a5cf91af894110ca0215ac051b5844701f2bfd934d52",
+                "sha256:45eb5a6fd193d6cf7e0cf5d8a5b31f83d5faae0293695626f539a823e93b13f6"
            ],
            "index": "pypi",
-            "version": "==1.0.2"
+            "version": "==1.1.1"
+        },
+        "flask-cors": {
+            "hashes": [
+                "sha256:72170423eb4612f0847318afff8c247b38bd516b7737adfc10d1c2cdbb382d16",
+                "sha256:f4d97201660e6bbcff2d89d082b5b6d31abee04b1b3003ee073a6fd25ad1d69a"
+            ],
+            "index": "pypi",
+            "version": "==3.0.8"
        },
        "flask-httpauth": {
            "hashes": [
-                "sha256:c08b69b302f1aa7ecd0db327809132ef6ca9486a36a9174776da146d1a4adc18",
-                "sha256:f71b7611f385fbdf350e8c430eed17b41c3b2200dc35eae19c1734264b68e31d"
+                "sha256:0149953720489407e51ec24bc2f86273597b7973d71cd51f9443bd0e2a89bd72",
+                "sha256:6ef8b761332e780f9ff74d5f9056c2616f52babc1998b01d9f361a1e439e61b9"
            ],
            "index": "pypi",
-            "version": "==3.2.4"
+            "version": "==3.3.0"
+        },
+        "flask-jwt-extended": {
+            "hashes": [
+                "sha256:0aa8ee6fa7eb3be9314e39dd199ac8e19389a95371f9d54e155c7aa635e319dd"
+            ],
+            "index": "pypi",
+            "version": "==3.24.1"
        },
        "flask-login": {
            "hashes": [
-                "sha256:c815c1ac7b3e35e2081685e389a665f2c74d7e077cb93cecabaea352da4752ec"
+                "sha256:6d33aef15b5bcead780acc339464aae8a6e28f13c90d8b1cf9de8b549d1c0b4b",
+                "sha256:7451b5001e17837ba58945aead261ba425fdf7b4f0448777e597ddab39f4fba0"
            ],
            "index": "pypi",
-            "version": "==0.4.1"
+            "version": "==0.5.0"
        },
-        "flask-marshmallow": {
+        "flask-migrate": {
            "hashes": [
-                "sha256:75c9d80f22af982b1e8ccec109d3b75c14bb5570602ae3705a4ff775badd2816",
-                "sha256:db7aff4130eb99fd05ab78fd2e2c58843ba0f208899aeb1c14aff9cd98ae8c80"
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-                "sha256:3fad697e1d91dfc13c078abcb86003f438a751c5a4ff41b84c9050199d2eab62",
-                "sha256:cdc27b5be63f12968a7f762eaa355e68228b0c904b4c96040a314ba7dc6d0e69"
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-            "hashes": [
-                "sha256:36342775f9e0990dfc000dbe61133dfe56f9ef32c9b4c6293ba7f2c128d16efc"
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+                "sha256:a96ff1875a49a40bd3e8ac04fce73fdb0870b9211e6168608cbafa4eb839d502"
            ],
            "index": "pypi",
-            "version": "==0.1.10"
+            "version": "==2.5.2"
+        },
+        "flask-pyoidc": {
+            "hashes": [
+                "sha256:215f91ec5f08d7a40b5fc10f88bec06bf39840f9242bb18e0ead3a249c1329ee"
+            ],
+            "index": "pypi",
+            "version": "==3.2.0"
+        },
+        "flask-restx": {
+            "hashes": [
+                "sha256:641759fe7cba1cb073d15b4258b1b15840af8cffe6edbd0da3e6b61eae0a67a6",
+                "sha256:fe0845112014201d618c1b0f3e41fa5f818a17c1d9e3fb6600d4e2c2bbc76a42"
+            ],
+            "index": "pypi",
+            "version": "==0.1.1"
+        },
+        "flask-script": {
+            "hashes": [
+                "sha256:6425963d91054cfcc185807141c7314a9c5ad46325911bd24dcb489bd0161c65"
+            ],
+            "index": "pypi",
+            "version": "==2.0.6"
+        },
+        "flask-socketio": {
+            "hashes": [
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+                "sha256:7ff5b2f5edde23e875a8b0abf868584e5706e11741557449bc5147df2cd78268"
+            ],
+            "index": "pypi",
+            "version": "==4.2.1"
        },
        "flask-sqlalchemy": {
            "hashes": [
-                "sha256:3bc0fac969dd8c0ace01b32060f0c729565293302f0c4269beed154b46bec50b",
-                "sha256:5971b9852b5888655f11db634e87725a9031e170f37c0ce7851cf83497f56e53"
+                "sha256:0078d8663330dc05a74bc72b3b6ddc441b9a744e2f56fe60af1a5bfc81334327",
+                "sha256:6974785d913666587949f7c2946f7001e4fa2cb2d19f4e69ead02e4b8f50b33d"
            ],
            "index": "pypi",
-            "version": "==2.3.2"
+            "version": "==2.4.1"
+        },
+        "flask-testing": {
+            "hashes": [
+                "sha256:d849bf53eb1ceb09dff6611888588cb60f20238058fb1ebcd917d69febc373e6"
+            ],
+            "index": "pypi",
+            "version": "==0.8.0"
+        },
+        "future": {
+            "hashes": [
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+            "version": "==0.18.2"
+        },
+        "greenlet": {
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+                "sha256:0d48200bc50cbf498716712129eef819b1729339e34c3ae71656964dac907c28",
+                "sha256:23d12eacffa9d0f290c0fe0c4e81ba6d5f3a5b7ac3c30a5eaf0126bf4deda5c8",
+                "sha256:37c9ba82bd82eb6a23c2e5acc03055c0e45697253b2393c9a50cef76a3985304",
+                "sha256:51155342eb4d6058a0ffcd98a798fe6ba21195517da97e15fca3db12ab201e6e",
+                "sha256:51503524dd6f152ab4ad1fbd168fc6c30b5795e8c70be4410a64940b3abb55c0",
+                "sha256:7457d685158522df483196b16ec648b28f8e847861adb01a55d41134e7734122",
+                "sha256:8041e2de00e745c0e05a502d6e6db310db7faa7c979b3a5877123548a4c0b214",
+                "sha256:81fcd96a275209ef117e9ec91f75c731fa18dcfd9ffaa1c0adbdaa3616a86043",
+                "sha256:853da4f9563d982e4121fed8c92eea1a4594a2299037b3034c3c898cb8e933d6",
+                "sha256:8b4572c334593d449113f9dc8d19b93b7b271bdbe90ba7509eb178923327b625",
+                "sha256:9416443e219356e3c31f1f918a91badf2e37acf297e2fa13d24d1cc2380f8fbc",
+                "sha256:9854f612e1b59ec66804931df5add3b2d5ef0067748ea29dc60f0efdcda9a638",
+                "sha256:99a26afdb82ea83a265137a398f570402aa1f2b5dfb4ac3300c026931817b163",
+                "sha256:a19bf883b3384957e4a4a13e6bd1ae3d85ae87f4beb5957e35b0be287f12f4e4",
+                "sha256:a9f145660588187ff835c55a7d2ddf6abfc570c2651c276d3d4be8a2766db490",
+                "sha256:ac57fcdcfb0b73bb3203b58a14501abb7e5ff9ea5e2edfa06bb03035f0cff248",
+                "sha256:bcb530089ff24f6458a81ac3fa699e8c00194208a724b644ecc68422e1111939",
+                "sha256:beeabe25c3b704f7d56b573f7d2ff88fc99f0138e43480cecdfcaa3b87fe4f87",
+                "sha256:d634a7ea1fc3380ff96f9e44d8d22f38418c1c381d5fac680b272d7d90883720",
+                "sha256:d97b0661e1aead761f0ded3b769044bb00ed5d33e1ec865e891a8b128bf7c656",
+                "sha256:e538b8dae561080b542b0f5af64d47ef859f22517f7eca617bb314e0e03fd7ef"
+            ],
+            "version": "==0.4.15"
+        },
+        "html5lib": {
+            "hashes": [
+                "sha256:20b159aa3badc9d5ee8f5c647e5efd02ed2a66ab8d354930bd9ff139fc1dc0a3",
+                "sha256:66cb0dcfdbbc4f9c3ba1a63fdb511ffdbd4f513b2b6d81b80cd26ce6b3fb3736"
+            ],
+            "index": "pypi",
+            "version": "==1.0.1"
+        },
+        "humanfriendly": {
+            "hashes": [
+                "sha256:25c2108a45cfd1e8fbe9cdb30b825d34ef5d5675c8e11e4775c9aedbfb0bdee2",
+                "sha256:3a831920e40e55ad49adb64c9179ed50c604cabca72cd300e7bd5b51310e4ebb"
+            ],
+            "version": "==8.1"
+        },
+        "ics": {
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+                "sha256:bf5fbdef6e1e073afdadf1b996f0271186dd114a148e38e795919a1ae644d6ac"
+            ],
+            "index": "pypi",
+            "version": "==0.7"
+        },
+        "idna": {
+            "hashes": [
+                "sha256:7588d1c14ae4c77d74036e8c22ff447b26d0fde8f007354fd48a7814db15b7cb",
+                "sha256:a068a21ceac8a4d63dbfd964670474107f541babbd2250d61922f029858365fa"
+            ],
+            "version": "==2.9"
+        },
+        "importlib-metadata": {
+            "hashes": [
+                "sha256:06f5b3a99029c7134207dd882428a66992a9de2bef7c2b699b5641f9886c3302",
+                "sha256:b97607a1a18a5100839aec1dc26a1ea17ee0d93b20b0f008d80a5a050afb200b"
+            ],
+            "markers": "python_version < '3.8'",
+            "version": "==1.5.0"
+        },
+        "importlib-resources": {
+            "hashes": [
+                "sha256:1dff36d42d94bd523eeb847c25c7dd327cb56686d74a26dfcc8d67c504922d59",
+                "sha256:7f0e1b2b5f3981e39c52da0f99b2955353c5a139c314994d1126c2551ace9bdf"
+            ],
+            "version": "==1.3.1"
        },
        "itsdangerous": {
            "hashes": [
@@ -105,17 +413,24 @@
        },
        "jinja2": {
            "hashes": [
-                "sha256:74c935a1b8bb9a3947c50a54766a969d4846290e1e788ea44c1392163723c3bd",
-                "sha256:f84be1bb0040caca4cea721fcbbbbd61f9be9464ca236387158b0feea01914a4"
+                "sha256:93187ffbc7808079673ef52771baa950426fd664d3aad1d0fa3e95644360e250",
+                "sha256:b0eaf100007721b5c16c1fc1eecb87409464edc10469ddc9a22a27a99123be49"
            ],
-            "version": "==2.10"
+            "version": "==2.11.1"
        },
        "jsonschema": {
            "hashes": [
-                "sha256:0c0a81564f181de3212efa2d17de1910f8732fa1b71c42266d983cd74304e20d",
-                "sha256:a5f6559964a3851f59040d3b961de5e68e70971afb88ba519d27e6a039efff1a"
+                "sha256:4e5b3cf8216f577bee9ce139cbe72eca3ea4f292ec60928ff24758ce626cd163",
+                "sha256:c8a85b28d377cc7737e46e2d9f2b4f44ee3c0e1deac6bf46ddefc7187d30797a"
            ],
-            "version": "==3.0.1"
+            "version": "==3.2.0"
+        },
+        "mako": {
+            "hashes": [
+                "sha256:3139c5d64aa5d175dbafb95027057128b5fbd05a40c53999f3905ceb53366d9d",
+                "sha256:8e8b53c71c7e59f3de716b6832c4e401d903af574f6962edbbbf6ecc2a5fe6c9"
+            ],
+            "version": "==1.1.2"
        },
        "markupsafe": {
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@@ -123,13 +438,16 @@
                "sha256:09027a7803a62ca78792ad89403b1b7a73a01c8cb65909cd876f7fcebd79b161",
                "sha256:09c4b7f37d6c648cb13f9230d847adf22f8171b1ccc4d5682398e77f40309235",
                "sha256:1027c282dad077d0bae18be6794e6b6b8c91d58ed8a8d89a89d59693b9131db5",
+                "sha256:13d3144e1e340870b25e7b10b98d779608c02016d5184cfb9927a9f10c689f42",
                "sha256:24982cc2533820871eba85ba648cd53d8623687ff11cbb805be4ff7b4c971aff",
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                "sha256:43a55c2930bbc139570ac2452adf3d70cdbb3cfe5912c71cdce1c2c6bbd9c5d1",
                "sha256:46c99d2de99945ec5cb54f23c8cd5689f6d7177305ebff350a58ce5f8de1669e",
                "sha256:500d4957e52ddc3351cabf489e79c91c17f6e0899158447047588650b5e69183",
                "sha256:535f6fc4d397c1563d08b88e485c3496cf5784e927af890fb3c3aac7f933ec66",
+                "sha256:596510de112c685489095da617b5bcbbac7dd6384aeebeda4df6025d0256a81b",
                "sha256:62fe6c95e3ec8a7fad637b7f3d372c15ec1caa01ab47926cfdf7a75b40e0eac1",
+                "sha256:6788b695d50a51edb699cb55e35487e430fa21f1ed838122d722e0ff0ac5ba15",
                "sha256:6dd73240d2af64df90aa7c4e7481e23825ea70af4b4922f8ede5b9e35f78a3b1",
                "sha256:717ba8fe3ae9cc0006d7c451f0bb265ee07739daf76355d06366154ee68d221e",
                "sha256:79855e1c5b8da654cf486b830bd42c06e8780cea587384cf6545b7d9ac013a0b",
@@ -146,24 +464,131 @@
                "sha256:ba59edeaa2fc6114428f1637ffff42da1e311e29382d81b339c1817d37ec93c6",
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                "sha256:cd5df75523866410809ca100dc9681e301e3c27567cf498077e8551b6d20e42f",
-                "sha256:e249096428b3ae81b08327a63a485ad0878de3fb939049038579ac0ef61e17e7"
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+                "sha256:e8313f01ba26fbbe36c7be1966a7b7424942f670f38e666995b88d012765b9be"
            ],
            "version": "==1.1.1"
        },
-        "marshmallow": {
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-            "version": "==2.18.1"
+            "version": "==1.5"
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            "index": "pypi",
-            "version": "==1.7.1"
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+                "sha256:c5ed816632204a2fc9486d784d8e0d0ae754347aba99c811458d69fcdfd2a2f9",
+                "sha256:dc058b7833184970d1248135b8b0ab702e6daa833be14035179f2acb78ff5636",
+                "sha256:ff3797f2f16bf9d17d53257612da84dd0758db33935777149b3334c01ff68865"
+            ],
+            "index": "pypi",
+            "version": "==7.0.0"
+        },
+        "pyasn1": {
+            "hashes": [
+                "sha256:39c7e2ec30515947ff4e87fb6f456dfc6e84857d34be479c9d4a4ba4bf46aa5d",
+                "sha256:aef77c9fb94a3ac588e87841208bdec464471d9871bd5050a287cc9a475cd0ba"
+            ],
+            "version": "==0.4.8"
+        },
+        "pycparser": {
+            "hashes": [
+                "sha256:2d475327684562c3a96cc71adf7dc8c4f0565175cf86b6d7a404ff4c771f15f0",
+                "sha256:7582ad22678f0fcd81102833f60ef8d0e57288b6b5fb00323d101be910e35705"
+            ],
+            "version": "==2.20"
+        },
+        "pycryptodomex": {
+            "hashes": [
+                "sha256:1537d2d15b604b303aef56e7f440895a1c81adbee786b91f1f06eddc34da5314",
+                "sha256:1d20ab8369b7558168fc014a0745c678613f9f486dae468cca2d68145196b8a4",
+                "sha256:1ecc9db7409db67765eb008e558879d298406642d33ade43a6488224d23e8081",
+                "sha256:37033976f72af829fe15f7fe5fe1dbed308cc43a98d9dd9d2a0a76de8ca5ee78",
+                "sha256:3c3dd9d4c9c1e279d3945ae422895c901f98987333acc132dc094faf52afec35",
+                "sha256:3c9b3fba037ea52c626060c5a87ee6de7e86c99e8a7c6ee07302539985d2bd64",
+                "sha256:45ee555fc5e28c119a46d44ce373f5237e54a35c61b750fb3a94446b09855dbc",
+                "sha256:4c93038ac011b36512cb0bf2ee3e2aec774e8bc81021d015917c89fe02bb0ee5",
+                "sha256:50163324834edd0c9ce3e4512ded3e221c969086e10fdd5d3fdcaadac5e24a78",
+                "sha256:59b0ea9cda5490f924771456912a225d8d9e678891f9f986661af718534719b2",
+                "sha256:5cf306a17cccc327a33cdc3845629fa13f4573a4ec620ed607c79cf6785f2e27",
+                "sha256:5fff8da399af16a1855f58771223acbbdac720b9969cd03fc5013d2e9a7bd9a4",
+                "sha256:68650ce5b9f7152b8283302a4617269f821695a612692640dd247bd12ab21c0b",
+                "sha256:6b3a9a562688996f760b5077714c3ab8b62ca56061b6e9ab7906841e43e19f91",
+                "sha256:7e938ed51a59e29431ea86fab60423ada2757728db0f78952329fa02a789bd31",
+                "sha256:87aa70daad6f039e814790a06422a3189311198b674b62f13933a2bdcb6b1bcc",
+                "sha256:99be3a1df2b2b9f731ebe1c264a2c07c465e71cee68e35e1640b645b5213a755",
+                "sha256:a3f2908666e6f74b8c4893f86dd02e16170f50e4a78ae7f3468b6208d54bc205",
+                "sha256:ae3d44a639fd11dbdeca47e35e94febb1ee8bc15daf26673331add37146e0b85",
+                "sha256:afb4c2fa3c6f492fd9a8b38d76e13f32d429b8e5e1e00238309391b5591cde0d",
+                "sha256:b1515ce3a8a2c3fa537d137c5ca5f8b7a902044d04e07d7c3aa26c3e026120fb",
+                "sha256:bf391b377413a197000b43ef2b74359974d8927d329a897c9f5ba7b63dca7b9c",
+                "sha256:c436919117c23355740c669f89720673578b9aa4569bbfe105f6c10101fc1966",
+                "sha256:d2c3c280975638e2a2c2fd9cb36ab111980219757fa163a2755594b9448e4138",
+                "sha256:e585d530764c459cbd5d460aed0288807bb881f376ca9a20e653645217895961",
+                "sha256:e76e6638ead4a7d93262a24218f0ff3ff74de6b6c823b7e19dccb31b6a481978",
+                "sha256:ebfc2f885cafda076c31ae30fa0dd81e7e919ec34059a88d3018ed66e83fcce3",
+                "sha256:f5797a39933a3d41526da60856735e6684b2b71a8ca99d5f79555ca121be2f4b",
+                "sha256:f7e5fc5e124200b19a14be33fb0099e956e6ebb5e25d287b0829ef0a78ed76c7",
+                "sha256:fb350e31e55211fec8ddc89fc0256f3b9bc3b44b68a8bde1cf44b3b4e80c0e42"
+            ],
+            "version": "==3.9.7"
+        },
+        "pydub": {
+            "hashes": [
+                "sha256:c362fa02da1eebd1d08bd47aa9b0102582dff7ca2269dbe9e043d228a0c1ea93",
+                "sha256:d29901a486fb421c5d7b0f3d5d3a60527179204d8ffb20e74e1ae81c17e81b46"
+            ],
+            "index": "pypi",
+            "version": "==0.23.1"
+        },
+        "pyjwkest": {
+            "hashes": [
+                "sha256:5560fd5ba08655f29ff6ad1df1e15dc05abc9d976fcbcec8d2b5167f49b70222"
+            ],
+            "version": "==1.4.2"
        },
        "pyjwt": {
            "hashes": [
@@ -175,51 +600,246 @@
        },
        "pyrsistent": {
            "hashes": [
-                "sha256:3ca82748918eb65e2d89f222b702277099aca77e34843c5eb9d52451173970e2"
+                "sha256:cdc7b5e3ed77bed61270a47d35434a30617b9becdf2478af76ad2c6ade307280"
            ],
-            "version": "==0.14.11"
+            "version": "==0.15.7"
+        },
+        "python-dateutil": {
+            "hashes": [
+                "sha256:73ebfe9dbf22e832286dafa60473e4cd239f8592f699aa5adaf10050e6e1823c",
+                "sha256:75bb3f31ea686f1197762692a9ee6a7550b59fc6ca3a1f4b5d7e32fb98e2da2a"
+            ],
+            "version": "==2.8.1"
+        },
+        "python-editor": {
+            "hashes": [
+                "sha256:1bf6e860a8ad52a14c3ee1252d5dc25b2030618ed80c022598f00176adc8367d",
+                "sha256:51fda6bcc5ddbbb7063b2af7509e43bd84bfc32a4ff71349ec7847713882327b",
+                "sha256:5f98b069316ea1c2ed3f67e7f5df6c0d8f10b689964a4a811ff64f0106819ec8"
+            ],
+            "version": "==1.0.4"
+        },
+        "python-engineio": {
+            "hashes": [
+                "sha256:47ae4a9b3b4f2e8a68929f37a518338838e119f24c9a9121af92c49f8bea55c3",
+                "sha256:c3a3822deb51fdf9c7fe4d78abf807c73b83ea538036a50862d3024450746253"
+            ],
+            "version": "==3.11.2"
+        },
+        "python-jose": {
+            "hashes": [
+                "sha256:1ac4caf4bfebd5a70cf5bd82702ed850db69b0b6e1d0ae7368e5f99ac01c9571",
+                "sha256:8484b7fdb6962e9d242cce7680469ecf92bda95d10bbcbbeb560cacdff3abfce"
+            ],
+            "index": "pypi",
+            "version": "==3.1.0"
+        },
+        "python-socketio": {
+            "extras": [
+                "client"
+            ],
+            "hashes": [
+                "sha256:48cba5b827ac665dbf923a4f5ec590812aed5299a831fc43576a9af346272534",
+                "sha256:af6c23c35497960f82106e36688123ecb52ad5a77d0ca27954ff3811c4d9d562"
+            ],
+            "index": "pypi",
+            "version": "==4.4.0"
+        },
+        "pythonping": {
+            "hashes": [
+                "sha256:05269d459d2290ff57665aa3b3c9ed1b64bb96106d22712e0054b52d51c6bb13"
+            ],
+            "index": "pypi",
+            "version": "==1.0.8"
        },
        "pytz": {
            "hashes": [
-                "sha256:32b0891edff07e28efe91284ed9c31e123d84bea3fd98e1f72be2508f43ef8d9",
-                "sha256:d5f05e487007e29e03409f9398d074e158d920d36eb82eaf66fb1136b0c5374c"
+                "sha256:1c557d7d0e871de1f5ccd5833f60fb2550652da6be2693c1e02300743d21500d",
+                "sha256:b02c06db6cf09c12dd25137e563b31700d3b80fcc4ad23abb7a315f2789819be"
            ],
-            "version": "==2018.9"
+            "version": "==2019.3"
        },
-        "relativetimebuilder": {
+        "requests": {
            "hashes": [
-                "sha256:5cc415b539d18a20e09a600cf7ba7199eda7b365d13aaaf9ffbbaa26cfb8062a",
-                "sha256:8b11e6fa6d6d4a09c61cfa9dadae4ea640bf10818e0991874d33452c0aeff2d7"
+                "sha256:43999036bfa82904b6af1d99e4882b560e5e2c68e5c4b0aa03b655f3d7d73fee",
+                "sha256:b3f43d496c6daba4493e7c431722aeb7dbc6288f52a6e04e7b6023b0247817e6"
            ],
-            "version": "==0.2.0"
+            "version": "==2.23.0"
+        },
+        "rsa": {
+            "hashes": [
+                "sha256:14ba45700ff1ec9eeb206a2ce76b32814958a98e372006c8fb76ba820211be66",
+                "sha256:1a836406405730121ae9823e19c6e806c62bbad73f890574fff50efa4122c487"
+            ],
+            "version": "==4.0"
+        },
+        "scapy": {
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+                "sha256:e2f8d11f6a941c14a789ae8b236b27bd634681f1b29b5e893861e284d234f6b0"
+            ],
+            "index": "pypi",
+            "version": "==2.4.3"
+        },
+        "simpleaudio": {
+            "hashes": [
+                "sha256:05b63da515f5fc7c6f40e4d9673d22239c5e03e2bda200fc09fd21c185d73713",
+                "sha256:67348e3d3ccbae73bd126beed7f1e242976889620dbc6974c36800cd286430fc",
+                "sha256:691c88649243544db717e7edf6a9831df112104e1aefb5f6038a5d071e8cf41d",
+                "sha256:86f1b0985629852afe67259ac6c24905ca731cb202a6e96b818865c56ced0c27",
+                "sha256:f1a4fe3358429b2ea3181fd782e4c4fff5c123ca86ec7fc29e01ee9acd8a227a",
+                "sha256:f346a4eac9cdbb1b3f3d0995095b7e86c12219964c022f4d920c22f6ca05fb4c",
+                "sha256:f68820297ad51577e3a77369e7e9b23989d30d5ae923bf34c92cf983c04ade04"
+            ],
+            "index": "pypi",
+            "version": "==1.0.4"
        },
        "six": {
            "hashes": [
-                "sha256:3350809f0555b11f552448330d0b52d5f24c91a322ea4a15ef22629740f3761c",
-                "sha256:d16a0141ec1a18405cd4ce8b4613101da75da0e9a7aec5bdd4fa804d0e0eba73"
+                "sha256:236bdbdce46e6e6a3d61a337c0f8b763ca1e8717c03b369e87a7ec7ce1319c0a",
+                "sha256:8f3cd2e254d8f793e7f3d6d9df77b92252b52637291d0f0da013c76ea2724b6c"
            ],
-            "version": "==1.12.0"
+            "version": "==1.14.0"
+        },
+        "socketio-client": {
+            "hashes": [
+                "sha256:64cd84fba79cf97f28c11e64d1fc42a2221f2d7a4fada05ab381e2d73d74d2c1"
+            ],
+            "index": "pypi",
+            "version": "==0.7.2"
+        },
+        "soupsieve": {
+            "hashes": [
+                "sha256:e914534802d7ffd233242b785229d5ba0766a7f487385e3f714446a07bf540ae",
+                "sha256:fcd71e08c0aee99aca1b73f45478549ee7e7fc006d51b37bec9e9def7dc22b69"
+            ],
+            "version": "==2.0"
        },
        "sqlalchemy": {
            "hashes": [
-                "sha256:11ead7047ff3f394ed0d4b62aded6c5d970a9b718e1dc6add9f5e79442cc5b14"
+                "sha256:c4cca4aed606297afbe90d4306b49ad3a4cd36feb3f87e4bfd655c57fd9ef445"
            ],
-            "version": "==1.3.0"
+            "index": "pypi",
+            "version": "==1.3.15"
        },
-        "webargs": {
+        "sqlalchemy-migrate": {
            "hashes": [
-                "sha256:10438164b41b81abe45b299eb182580f7bc6bcdbc864b0cbd62845bb6bab424d",
-                "sha256:3bed01136ea4a7d1468a54f6c3925d133872a83a2144e83a94f484731576bc58",
-                "sha256:494044344b5673e3624621d0e9d14d5dc01dd05c0b5b8952febc80a4f80181f6"
+                "sha256:0bc02e292a040ade5e35a01d3ea744119e1309cdddb704fdb99bac13236614f8",
+                "sha256:e5d2348db19a5062132d93e3b4d9e7644af552fffbec4c78cc5358f848d2f6c1"
            ],
-            "version": "==5.1.2"
+            "index": "pypi",
+            "version": "==0.13.0"
+        },
+        "sqlparse": {
+            "hashes": [
+                "sha256:022fb9c87b524d1f7862b3037e541f68597a730a8843245c349fc93e1643dc4e",
+                "sha256:e162203737712307dfe78860cc56c8da8a852ab2ee33750e33aeadf38d12c548"
+            ],
+            "version": "==0.3.1"
+        },
+        "ssh2-python": {
+            "hashes": [
+                "sha256:054f2cab611ddca34095eb78d1ae1f6e29521678c82f0de17f696072a0b924fe",
+                "sha256:097d74684172f163d5025aef316987c1c7acf852d9fb75e4735720c8690adf87",
+                "sha256:0f4555b79e19ca6fdd84a74e85152d375a921d167ed9dc680d05f1f9f5dfc463",
+                "sha256:0fb3d9eca454b2874748c69e7e836ea5c6544f1b7acd87d8a876f99f618c806c",
+                "sha256:180c2728796f777a5856b23e5e1656a15a3e8602b4270348f892599ae5426f45",
+                "sha256:49aaa9d48cf52798d89f466a5e774e9dab8b76dc380b90645fd8d5c6622df177",
+                "sha256:4b5ba1390ff5e8faa6b2409df750e4650de3934c3b76ad707d7b54b477600226",
+                "sha256:57a4452dfc5c7f414de14e32f29e21f680fb8d7bdf94306e5f6bc8c2a235fa7a",
+                "sha256:584f753f0401217a55e70d2ae97a7e5220f4d37993a1bba275c4c5e110d87193",
+                "sha256:692cf27ddc5583da9b07b0f0348f0577579f8d798a0b8e4bf495b8d7f19fc854",
+                "sha256:6dc75bacc37de63aa9c86f9982642982c3a8103297fbbb73543a76e3db9abc6a",
+                "sha256:7a029275e62a1e31333ee7f2f151f661dedfac0345f1108e1a8d0b62e08ddf9b",
+                "sha256:7a3d761c669392e778c24a0eabcf6f1ba48ad68bb3b82a2d98235f56500bc8b0",
+                "sha256:8632684aae2f523e603381cf51a1da134fd5937cf0ae9650b1b9e7b4f328c133",
+                "sha256:8acab66dd73554d2c68abaccf96cdddfc10449ad6c7c273ac4b7a91779d414b2",
+                "sha256:9410b63c2361b2b65a55b5e8dc8187270de0f81e11864a427ad52b82b926bcc9",
+                "sha256:abe29ad01ed2ac4465e61c8de42b6850fca9c87d8792686a2de7c7d06c6eb72d",
+                "sha256:de151500a2a027a29bca3d7196c76008b41bb97db29378f29c4651ba1bcb00e8",
+                "sha256:debc56711643b82ab60a9c8b8cbf2978b65c0293aa7e53557a3c0d1fc57799cf",
+                "sha256:f508144d684b3c3c0f264ce67058f05ae3729ae77cc3a8f2051b442e01594849"
+            ],
+            "index": "pypi",
+            "version": "==0.18.0.post1"
+        },
+        "style": {
+            "hashes": [
+                "sha256:6485a4bcb84629341a5fd1587fe3ac4887daa4741f0c8a1d01b9c3c8a263afe7",
+                "sha256:8eb365fc15039b19b728bd4e6e85fb7daf24e7aeeec6a15a666f97484c564005"
+            ],
+            "version": "==1.1.0"
+        },
+        "tatsu": {
+            "hashes": [
+                "sha256:80713413473a009f2081148d0f494884cabaf9d6866b71f2a68a92b6442f343d",
+                "sha256:c9211eeee9a2d4c90f69879ec0b518b1aa0d9450249cb0dd181f5f5b18be0a92"
+            ],
+            "version": "==4.4.0"
+        },
+        "tempita": {
+            "hashes": [
+                "sha256:cacecf0baa674d356641f1d406b8bff1d756d739c46b869a54de515d08e6fc9c"
+            ],
+            "version": "==0.5.2"
+        },
+        "typing-extensions": {
+            "hashes": [
+                "sha256:091ecc894d5e908ac75209f10d5b4f118fbdb2eb1ede6a63544054bb1edb41f2",
+                "sha256:910f4656f54de5993ad9304959ce9bb903f90aadc7c67a0bef07e678014e892d",
+                "sha256:cf8b63fedea4d89bab840ecbb93e75578af28f76f66c35889bd7065f5af88575"
+            ],
+            "version": "==3.7.4.1"
+        },
+        "tzlocal": {
+            "hashes": [
+                "sha256:11c9f16e0a633b4b60e1eede97d8a46340d042e67b670b290ca526576e039048",
+                "sha256:949b9dd5ba4be17190a80c0268167d7e6c92c62b30026cf9764caf3e308e5590"
+            ],
+            "version": "==2.0.0"
+        },
+        "update": {
+            "hashes": [
+                "sha256:a25522b4bf60e3e3c1a3ff3ca3a4f5a328ac4b8ff400fdc9614483147e313323"
+            ],
+            "index": "pypi",
+            "version": "==0.0.1"
+        },
+        "urllib3": {
+            "hashes": [
+                "sha256:2f3db8b19923a873b3e5256dc9c2dedfa883e33d87c690d9c7913e1f40673cdc",
+                "sha256:87716c2d2a7121198ebcb7ce7cccf6ce5e9ba539041cfbaeecfb641dc0bf6acc"
+            ],
+            "version": "==1.25.8"
+        },
+        "webencodings": {
+            "hashes": [
+                "sha256:a0af1213f3c2226497a97e2b3aa01a7e4bee4f403f95be16fc9acd2947514a78",
+                "sha256:b36a1c245f2d304965eb4e0a82848379241dc04b865afcc4aab16748587e1923"
+            ],
+            "version": "==0.5.1"
+        },
+        "websocket-client": {
+            "hashes": [
+                "sha256:0fc45c961324d79c781bab301359d5a1b00b13ad1b10415a4780229ef71a5549",
+                "sha256:d735b91d6d1692a6a181f2a8c9e0238e5f6373356f561bb9dc4c7af36f452010"
+            ],
+            "index": "pypi",
+            "version": "==0.57.0"
        },
        "werkzeug": {
            "hashes": [
-                "sha256:c3fd7a7d41976d9f44db327260e263132466836cef6f91512889ed60ad26557c",
-                "sha256:d5da73735293558eb1651ee2fddc4d0dedcfa06538b8813a2e20011583c9e49b"
+                "sha256:1e0dedc2acb1f46827daa2e399c1485c8fa17c0d8e70b6b875b4e7f54bf408d2",
+                "sha256:b353856d37dec59d6511359f97f6a4b2468442e454bd1c98298ddce53cac1f04"
            ],
-            "version": "==0.14.1"
+            "version": "==0.16.1"
+        },
+        "zipp": {
+            "hashes": [
+                "sha256:aa36550ff0c0b7ef7fa639055d797116ee891440eac1a56f378e2d3179e0320b",
+                "sha256:c599e4d75c98f6798c509911d08a22e6c021d074469042177c8c86fb92eefd96"
+            ],
+            "markers": "python_version < '3.8'",
+            "version": "==3.1.0"
        }
    },
    "develop": {}
--- a/README.md
+++ b/README.md
@@ -0,0 +1,7 @@
+Backend code for LRC
+
+
+requirements:
+
+- python > 3.6
+- libasound2-dev
--- a/init.py
+++ b/init.py
@@ -1,21 +0,0 @@
-# -*- coding: utf-8 -*-
-"""
-Backend base module
-"""
-
-from flask import Flask
-from flask_httpauth import HTTPTokenAuth, HTTPBasicAuth, MultiAuth
-from flask_sqlalchemy import SQLAlchemy
-
-jwt_auth = HTTPTokenAuth()
-basic_auth = HTTPBasicAuth()
-multi_auth = MultiAuth(basic_auth, jwt_auth)
-
-from .serve_frontend import fe_bp
-from .api import api_bp
-
-app = Flask(__name__)
-app.register_blueprint(api_bp)
-app.register_blueprint(fe_bp)
-
-db = SQLAlchemy(app)
--- a/main.py
+++ b/main.py
@@ -1,13 +0,0 @@
-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-
-#  Copyright (c) 2019. Tobias Kurze
-from backend import app
-
-
-def main():
-    app.run(debug=True)
-
-
-if __name__ == '__main__':
-    main()
--- a/api/init.py
+++ b/api/init.py
@@ -1,28 +0,0 @@
-# -*- coding: utf-8 -*-
-
-from flask import Blueprint
-from flask_restplus import Api
-
-api_authorizations = {
-    'apikey': {
-        'type': 'apiKey',
-        'in': 'header',
-        'name': 'X-API-KEY'
-    },
-    'basicAuth': {
-        'type': 'basic',
-        'scheme': 'basic'
-    },
-    'bearerAuth': {
-        'type': 'apiKey',
-        'scheme': 'bearer',
-        'name': 'Authorization',
-        'in': 'header'
-    }
-}
-
-api_bp = Blueprint('api', __name__, url_prefix='/api')
-api_v1 = Api(api_bp, prefix="/v1", version='0.1', title='Vue Test API',
-             description='The Vue Test API', doc='/v1/doc/', authorizations=api_authorizations, security='bearerAuth')
-
-from .example_api import *
--- a/backend/init.py
+++ b/backend/init.py
@@ -0,0 +1,182 @@
+# -*- coding: utf-8 -*-
+"""
+Backend base module
+"""
+import logging
+from io import StringIO
+from logging.config import dictConfig
+from logging.handlers import MemoryHandler
+from typing import Union
+
+import coloredlogs as coloredlogs
+import jwt
+import requests
+from flask import Flask, jsonify, abort
+from flask_httpauth import HTTPTokenAuth, HTTPBasicAuth, MultiAuth
+from flask_jwt_extended import JWTManager, decode_token
+from flask_login import LoginManager
+from flask_sqlalchemy import SQLAlchemy
+from flask_cors import CORS
+from backend.config import Config
+
+__author__ = "Tobias Kurze"
+__copyright__ = "Copyright 2019, Tobias Kurze, KIT"
+__credits__ = ["Tobias Kurze"]
+__license__ = ""
+__version__ = "0.9.0"
+__maintainer__ = "Tobias Kurze"
+__email__ = "it@t-kurze.de"
+# __status__ = "Production"
+__status__ = "Development"
+
+from .tools.send_mail import get_smtp_default_handler
+
+dictConfig({
+    'version': 1,
+    'formatters': {
+        'default': {
+            'format': '[%(asctime)s] {%(threadName)s} %(levelname)s in %(module)s, line %(lineno)d: %(message)s',
+        }
+    },
+    'handlers': {
+        'wsgi': {
+            'class': 'logging.StreamHandler',
+            'stream': 'ext://flask.logging.wsgi_errors_stream',
+            'formatter': 'default'
+        },
+        'root_file': {
+            'class': 'logging.handlers.TimedRotatingFileHandler',
+            'filename': Config.ROOT_LOG_FILE,
+            'when': 'd',
+            'interval': 1,
+            'backupCount': 3,
+            'formatter': 'default',
+        },
+        'file': {
+            'class': 'logging.handlers.TimedRotatingFileHandler',
+            'filename': Config.LOG_FILE,
+            'when': 'd',
+            'interval': 1,
+            'backupCount': 5,
+            'formatter': 'default',
+        },
+        'errors_file': {
+            'class': 'logging.handlers.TimedRotatingFileHandler',
+            'filename': Config.ERROR_LOG_FILE,
+            'when': 'd',
+            'interval': 1,
+            'backupCount': 5,
+            'level': 'ERROR',
+            'formatter': 'default',
+        },
+    },
+    'loggers': {
+        'lrc': {
+            'level': Config.LOG_LEVEL,
+            'handlers': ['wsgi', 'file', 'errors_file']
+        }
+    },
+    'root': {
+        'level': 'ERROR',
+        'handlers': ['root_file', 'errors_file']
+    }
+})
+
+main_logger = logging.getLogger("lrc")
+
+# following might be dangerous, as buffer might be filled without a mechanism to empty it
+smtp_error_handler = get_smtp_default_handler(subject="Warnings, errors and worse...!")
+mem_handler = MemoryHandler(capacity=10, flushLevel=logging.ERROR, target=smtp_error_handler)
+mem_handler.setLevel(logging.WARNING)
+# error_log_stream = StringIO()
+# error_log_stream_handler = logging.StreamHandler(stream=error_log_stream)
+# error_log_stream_handler.setLevel(logging.ERROR)
+# main_logger.addHandler(error_log_stream_handler)
+
+coloredlogs.install(level='DEBUG', logger=main_logger)
+
+
+class LrcException(Exception):
+    def __init__(self, message_or_exception: Union[str, Exception], html_code: int = None):
+        if isinstance(message_or_exception, str):
+            super().__init__(message_or_exception)
+            self.type = None
+        else:
+            super().__init__(str(message_or_exception))
+            self.type = type(message_or_exception)
+        self.html_code = html_code
+
+    def __repr__(self):
+        if self.type is None:
+            msg = "LRC Exception: \"{}\"".format(', '.join(super().args))
+        else:
+            msg = "LRC Exception: (original Exception: {}) \"{}\"".format(self.type, ', '.join(super().args))
+        if self.html_code is not None:
+            msg += " (HTML Code: {})".format(self.html_code)
+        return msg
+
+    def __str__(self):
+        return self.__repr__()
+
+
+app = Flask(__name__)
+app.config.from_object('backend.config.Config')
+db = SQLAlchemy(app)
+
+login_manager = LoginManager()
+login_manager.init_app(app)
+
+# flask_jwt_extended: to be used usually by API
+jwt_extended = JWTManager(app)
+# this is another library.... this is (probaby ->verify) used to check JWTs provided by external sources (KIT, etc.)
+jwt_auth = HTTPTokenAuth('Bearer')
+
+
+@jwt_extended.invalid_token_loader
+def unauthorized_jwt(token):
+    main_logger.info("Unauthorized access; invalid token provided: {}".format(token))
+    abort(401)
+
+
+@jwt_auth.verify_token
+def verify_token(token):
+    """This function (and HTTPTokenAuth('Bearer')) has been defined to be used together with MultiAuth. For API calls
+    solely using JWT authentication, jwt_required of flask_jwt_extended should be used directly."""
+    app.logger.info(token)
+    try:
+        decoded = decode_token(token)
+    except jwt.exceptions.DecodeError as e:
+        app.logger.warn("Could not verify token: {}".format(str(e)))
+        return False
+    except jwt.exceptions.ExpiredSignatureError as e:
+        app.logger.warn("Could not verify token: {}".format(str(e)))
+        return False
+    app.logger.info(decoded)
+    return True
+
+
+basic_auth = HTTPBasicAuth()
+multi_auth = MultiAuth(basic_auth, jwt_auth)
+
+from backend.auth import oidc_auth, auth_bp
+
+try:
+    oidc_auth.init_app(app)
+except requests.exceptions.ConnectionError as err:
+    app.logger.error("Could not connect to OIDC!!", err)
+
+# oidc_multi_auth = MultiAuth(oidc_auth, jwt_auth) <- can't work as OIDCAuthentication not implementing HTTPAuth
+
+from .serve_frontend import fe_bp
+from .api import auth_api_bp, api_v1, api_bp
+
+app.register_blueprint(auth_bp)
+app.register_blueprint(auth_api_bp)
+app.register_blueprint(api_bp)
+app.register_blueprint(fe_bp)
+
+CORS(app)
+CORS(api_bp)
+
+# Fix jwt_extended by duck typing error handlers
+jwt_extended._set_error_handler_callbacks(api_v1)
--- a/backend/main.py
+++ b/backend/main.py
@@ -0,0 +1,68 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+#  Copyright (c) 2019. Tobias Kurze
+import logging
+import ssl
+import sys
+
+from jinja2.exceptions import TemplateNotFound
+
+from backend import app, db
+from backend.cron import get_default_scheduler, add_default_jobs
+from backend.models import *
+from backend.models import room_model, recorder_model, RecorderCommand, Recorder
+from backend.recorder_adapters import get_defined_recorder_adapters
+from backend.tools.model_updater import update_recorder_models_database, create_default_recorders
+from backend.websocket.base import WebSocketBase
+
+
+def main():
+    logging.basicConfig(level=logging.DEBUG, format='%(asctime)s - %(name)s - %(levelname)s - %(message)s')
+
+    #db.drop_all()
+    #db.create_all()
+
+    #Recorder()
+    room_model.pre_fill_table()
+    update_recorder_models_database(drop=False)
+    create_default_recorders()
+
+    print(app.config.get("SERVER_NAME", None))
+    server_name = app.config.get("SERVER_NAME", None)
+    if server_name is not None and "ubkaps154.ubka.uni-karlsruhe.de" in server_name:
+        try:
+            context = ssl.SSLContext(ssl.PROTOCOL_TLSv1_2)
+            context.load_cert_chain('cert.pem', 'key.pem')
+            app.run(debug=True, ssl_context=context, threaded=True)
+        except FileNotFoundError:
+            app.run(debug=True, threaded=True)
+
+    try:
+        db.create_all()
+    except Exception as e:
+        logging.critical(e)
+
+    print("Starting Scheduler")
+    scheduler = get_default_scheduler()
+    add_default_jobs(scheduler)
+    scheduler.start()
+
+    wsb = WebSocketBase()
+    print("running websocket...(replaces normal app.run()")
+    wsb.start_websocket(debug=True)
+    # print("running web app...")
+    #app.run(debug=True, host="0.0.0.0", threaded=True)
+    wsb.send_test_msg()
+
+    while True:
+        user_in = input("Type >exit< to quit.")
+        if user_in == "exit" or user_in == ">exit<":
+            break
+
+    scheduler.shutdown()
+    sys.exit(0)
+
+
+if __name__ == '__main__':
+    main()
--- a/backend/api/init.py
+++ b/backend/api/init.py
@@ -0,0 +1,84 @@
+# -*- coding: utf-8 -*-
+
+from flask import Blueprint, abort
+from flask_restx import Api, Namespace
+
+api_authorizations = {
+    'apikey': {
+        'type': 'apiKey',
+        'in': 'header',
+        'name': 'X-API-KEY'
+    },
+    'basicAuth': {
+        'type': 'basic',
+        'scheme': 'basic'
+    },
+    'bearerAuth': {
+        'type': 'apiKey',
+        'scheme': 'bearer',
+        'name': 'Authorization',
+        'in': 'header'
+    }
+}
+
+api_bp = Blueprint('api', __name__, url_prefix='/api')
+api_v1 = Api(api_bp, prefix="/v1", version='0.1', title='Vue Test API',
+             description='The Vue Test API', doc='/v1/doc/', authorizations=api_authorizations, security='bearerAuth')
+
+api_user = Namespace('user', description="User management namespace", authorizations=api_authorizations)
+api_group = Namespace('group', description="Group management namespace", authorizations=api_authorizations)
+api_permissions = Namespace('permissions', description="Permissions management namespace", authorizations=api_authorizations)
+api_room = Namespace('room', description="Room management namespace", authorizations=api_authorizations)
+api_recorder = Namespace('recorder', description="Recorder management namespace", authorizations=api_authorizations)
+api_state = Namespace('state', description="Object state management namespace", authorizations=api_authorizations)
+api_virtual_command = Namespace('virtual_command', description="Virtual command namespace",
+                                authorizations=api_authorizations)
+api_cron_job = Namespace('cron_job', description="Cron job namespace",
+                                authorizations=api_authorizations)
+api_control = Namespace('control', description="Control namespace",
+                                authorizations=api_authorizations)
+
+api_v1.add_namespace(api_user)
+api_v1.add_namespace(api_group)
+api_v1.add_namespace(api_permissions)
+api_v1.add_namespace(api_room)
+api_v1.add_namespace(api_recorder)
+api_v1.add_namespace(api_state)
+api_v1.add_namespace(api_virtual_command)
+api_v1.add_namespace(api_cron_job)
+api_v1.add_namespace(api_control)
+
+auth_api_bp = Blueprint('auth_api', __name__, url_prefix='/api/auth')
+auth_api_v1 = Api(auth_api_bp, prefix="/v1", version='0.1', title='Auth API',
+             description='Auth API', doc='/v1/doc/', authorizations=api_authorizations, security='bearerAuth')
+
+auth_api_providers_ns = Namespace('providers')
+auth_api_register_ns = Namespace('register')
+auth_api_v1.add_namespace(auth_api_providers_ns)
+auth_api_v1.add_namespace(auth_api_register_ns)
+# user_api_bp = Blueprint('user_api', __name__, url_prefix='/api/user')
+# group_api_bp = Blueprint('group_api', __name__, url_prefix='/api/group')
+
+from .example_api import *
+from .auth_api import *
+from .user_api import *
+from .permission_api import *
+from .group_api import *
+from .room_api import *
+from .recorder_api import *
+from .state_api import *
+from .control_api import *
+from .virtual_command_api import *
+
+
+# from .group_api import *
+
+
+@api_bp.route('/<path:path>')
+def catch_all_api(path):
+    """
+    Default 404 response for undefined paths in API.
+    :param path:
+    :return:
+    """
+    abort(404)
--- a/backend/api/auth_api.py
+++ b/backend/api/auth_api.py
@@ -0,0 +1,196 @@
+#  Copyright (c) 2019. Tobias Kurze
+"""
+This module provides functions related to authentication through the API.
+For example: listing of available auth providers or registration of users.
+
+Login through API does not start a new session, but instead returns JWT.
+"""
+import base64
+import json
+from pprint import pprint
+
+import flask
+from datetime import datetime, timedelta
+import jwt
+from flask import request, jsonify, current_app, url_for, Response, session, redirect, make_response
+from flask_jwt_extended import create_access_token, create_refresh_token, jwt_refresh_token_required, get_jwt_identity, \
+    get_raw_jwt, jwt_required
+from functools import wraps
+from random import randint
+
+from flask_login import logout_user, login_user
+from typing import Iterable
+
+from flask_restx import Resource, fields
+from werkzeug.routing import BuildError
+
+from backend import db, app, jwt_extended
+from backend.api import auth_api_bp, auth_api_providers_ns, auth_api_register_ns
+from backend.auth import AUTH_PROVIDERS, oidc_auth
+from backend.models.user_model import User, Group, BlacklistToken
+
+
+@auth_api_bp.route('/providers', methods=('GET',))
+def get_auth_providers():
+    providers = dict()
+    for p in AUTH_PROVIDERS:
+        provider = dict(AUTH_PROVIDERS[p])
+        try:
+            provider["url"] = url_for(AUTH_PROVIDERS[p]["url"])
+        except BuildError:
+            provider["url"] = AUTH_PROVIDERS[p]["url"]
+        providers[p] = provider
+    return jsonify(providers)
+
+
+@auth_api_providers_ns.route('/')
+class AuthProviders(Resource):
+    def get(self):
+        return get_auth_providers()
+
+
+@auth_api_bp.route('/register', methods=('POST',))
+def register():
+    data = request.get_json()
+    user = User(**data)
+    db.session.add(user)
+    db.session.commit()
+    return jsonify(user.to_dict()), 201
+
+
+@auth_api_register_ns.route('/')
+@auth_api_register_ns.expect(auth_api_register_ns.model('RegisterModel', {
+    'nickname': fields.String(required=False, description='The user\'s nickname'),
+    'first_name': fields.String(required=False, description='The user\'s first name'),
+    'last_name': fields.String(required=False, description='The user\'s last name'),
+    'lang': fields.String(required=False, description='The user\'s preferred language'),
+    'timezone': fields.String(required=False, description='The user\'s preferred timezone'),
+    'email': fields.String(required=True, description='The user\'s e-mail address'),
+    'password': fields.String(required=False, description='The group\'s name')
+}))
+class AuthProviders(Resource):
+    def get(self):
+        return register()
+
+
+@auth_api_bp.route('/login', methods=('GET', 'POST',))
+def login():
+    print("login")
+    print(request)
+    data = request.get_json()
+    if not data:
+        return jsonify({'message': 'Invalid request data', 'authenticated': False}), 401
+    print(data)
+    user = User.authenticate(**data)
+
+    if not user:
+        return jsonify({'message': 'Invalid credentials', 'authenticated': False}), 401
+
+    token = {
+        'access_token': create_access_token(identity=user, fresh=True),
+        'refresh_token': create_refresh_token(identity=user)
+    }
+    return jsonify(token), 200
+
+# Endpoint for revoking the current users access token
+@auth_api_bp.route('/logout', methods=['GET', 'DELETE'])
+@jwt_required
+def logout():
+    jti = get_raw_jwt()['jti']
+    db.session.add(BlacklistToken(token=jti))
+    db.session.commit()
+    return jsonify({"msg": "Successfully logged out"}), 200
+
+
+# Endpoint for revoking the current users refresh token
+@auth_api_bp.route('/logout2', methods=['GET', 'DELETE'])
+@jwt_refresh_token_required
+def logout2():
+    jti = get_raw_jwt()['jti']
+    db.session.add(BlacklistToken(token=jti))
+    db.session.commit()
+    return jsonify({"msg": "Successfully logged out"}), 200
+
+
+def check_and_create_groups(groups: Iterable[str]):
+    user_groups = []
+    for g in groups:
+        group = Group.get_by_name(g)
+        if group is None:
+            group = Group(name=g)
+            db.session.add(group)
+        user_groups.append(group)
+
+    db.session.commit()
+    return user_groups
+
+
+def create_or_retrieve_user_from_userinfo(userinfo):
+    try:
+        email = userinfo["email"]
+    except KeyError:
+        return None
+
+    user_groups = check_and_create_groups(groups=userinfo.get("memberOf", []))
+    user = User.get_by_identifier(email)
+
+    if user is not None:
+        app.logger.info("user found -> update user")
+        pprint(user.to_dict())
+        user.first_name = userinfo.get("given_name", "")
+        user.last_name = userinfo.get("family_name", "")
+        for g in user_groups:
+            user.groups.append(g)
+        db.session.commit()
+        return user
+
+    user = User(email=email, first_name=userinfo.get("given_name", ""),
+                last_name=userinfo.get("family_name", ""), external_user=True,
+                groups=user_groups)
+
+    app.logger.info("creating new user")
+
+    db.session.add(user)
+    db.session.commit()
+    return user
+
+
+@auth_api_bp.route('/oidc', methods=['GET'])
+@auth_api_bp.route('/oidc/<redirect_url>', methods=['GET'])
+@oidc_auth.oidc_auth()
+def oidc(redirect_url=None):
+    user = create_or_retrieve_user_from_userinfo(flask.session['userinfo'])
+    if user is None:
+        return "Could not authenticate: could not find or create user.", 401
+    if current_app.config.get("AUTH_RETURN_EXTERNAL_JWT", False):
+        token = jwt.encode(flask.session['id_token'], current_app.config['SECRET_KEY'])
+    else:
+        token = json.dumps({
+            'access_token': create_access_token(identity=user, fresh=True),
+            'refresh_token': create_refresh_token(identity=user)
+        })
+    if redirect_url is None:
+        redirect_url = request.headers.get("Referer")
+    if redirect_url is None:
+        redirect_url = request.args.get('redirect_url')
+    if redirect_url is None:
+        redirect_url = "/"
+    app.logger.info("Token: {}".format(token))
+    response = make_response(redirect(redirect_url))
+    response.set_cookie('tokens', base64.b64encode(token.encode('utf-8')))
+    return response
+
+
+@auth_api_bp.route('/refresh', methods=['GET'])
+@jwt_refresh_token_required
+def refresh():
+    """Refresh token endpoint. This will generate a new access token from
+    the refresh token, but will mark that access token as non-fresh,
+    as we do not actually verify a password in this endpoint."""
+    jwt_identity = get_jwt_identity()
+    user = User.get_by_identifier(jwt_identity)
+    app.logger.info("Refreshing token for " + str(user))
+    new_token = create_access_token(identity=user, fresh=False)
+    ret = {'access_token': new_token}
+    return jsonify(ret), 200
+
--- a/backend/api/control_api.py
+++ b/backend/api/control_api.py
@@ -0,0 +1,55 @@
+#  Copyright (c) 2019. Tobias Kurze
+"""
+This module provides functions related to authentication through the API.
+For example: listing of available auth providers or registration of users.
+
+Login through API does not start a new session, but instead returns JWT.
+"""
+import json
+from datetime import datetime
+
+from flask_jwt_extended import jwt_required, get_current_user, get_jwt_claims
+from flask_restx import fields, Resource
+
+from backend import db
+from backend.api import api_control, get_jwt_identity, Recorder, RecorderCommand, pprint
+from backend.recorder_adapters.helpers import execute_recorder_command
+
+control_command_response_model = api_control.model('Control Command Response', {
+    'time': fields.DateTime(required=False, description='Creation date of the recorder'),
+    'ok': fields.Boolean(required=True, description='Field indicating whether command execution was successful.'),
+    'output': fields.String(required=False, description='Command output in case of success'),
+    'error': fields.String(required=False, description='Error description in case of a problem.'),
+})
+
+
+@api_control.route('')
+class ControlCommand(Resource):
+    control_command_parser = api_control.parser()
+    control_command_parser.add_argument('recorder_id', type=int, default=1, required=True)
+    control_command_parser.add_argument('command_id', type=int, default=1, required=True)
+    control_command_parser.add_argument('parameters', default={}, type=dict, required=False,
+                                        location='json')
+
+    #@jwt_required
+    @api_control.doc('run_command')
+    @api_control.expect(control_command_parser)
+    @api_control.marshal_with(control_command_response_model, skip_none=False, code=201)
+    def post(self):
+        #print(get_current_user())
+        #print(get_jwt_identity())
+        #current_user = {'user': get_current_user(), 'claims': get_jwt_claims()}
+        #TODO: right check! (acl, etc.)
+        args = self.control_command_parser.parse_args()
+        recorder = Recorder.get_by_identifier(args.get('recorder_id'))
+        if recorder is None:
+            api_control.abort(404, "Recorder not found!")
+        command = RecorderCommand.get_by_identifier(args.get('command_id'))
+        if command is None:
+            api_control.abort(404, "Command not found!")
+
+        success, output = execute_recorder_command(recorder, command, args.get('parameters', None))
+
+        if success:
+            return {'time': datetime.utcnow(), 'output': output, 'ok': success}
+        return {'time': datetime.utcnow(), 'error': output, 'ok': success}
--- a/backend/api/example_api.py
+++ b/backend/api/example_api.py
@@ -1,9 +1,13 @@
+
+import datetime
+import ipaddress
+import json
 import logging
 from random import *
-from flask import jsonify, Blueprint
-from flask_restplus import Resource, reqparse
+from flask import jsonify, Blueprint, request
+from flask_restx import Resource, reqparse

-from backend import basic_auth, multi_auth
+from backend import basic_auth, multi_auth, db, jwt_auth
 from backend.api import api_v1, api_bp


@@ -18,6 +22,18 @@ def random_number():
    return jsonify(response)


+@api_bp.route('/test_jwt')
+@jwt_auth.login_required
+def random_number_jwt():
+    """
+    :return: a random number
+    """
+    response = {
+        'randomNumber': randint(1, 100)
+    }
+    return jsonify(response)
+
+
 class HelloWorld(Resource):
    """
    This is a test class.
@@ -59,7 +75,7 @@ class SensorData_Handler(Resource):
        print("values...")
        print(args['values'])
        values = json.loads(args['values'])
-        wasss_app.logger.info("vals: " + str(values) + " (len: " + str(len(values)) + ")")
+        app.logger.info("vals: " + str(values) + " (len: " + str(len(values)) + ")")

        rough_geo_location = None
        try:
--- a/backend/api/group_api.py
+++ b/backend/api/group_api.py
@@ -0,0 +1,91 @@
+#  Copyright (c) 2019. Tobias Kurze
+"""
+This module provides functions related to authentication through the API.
+For example: listing of available auth providers or registration of users.
+
+Login through API does not start a new session, but instead returns JWT.
+"""
+from flask_jwt_extended import jwt_required
+from flask_restx import fields, Resource
+
+from backend import db
+from backend.api import api_group
+from backend.models.user_model import Group
+
+group_model = api_group.model('Group', {
+    'id': fields.String(required=False, description='The group\'s identifier'),
+    'name': fields.String(required=True, description='The group\'s name'),
+    'description': fields.String(required=False, description='The group\'s description'),
+    'users': fields.List(fields.Nested(api_group.model('group_member',
+                                                       {'id': fields.Integer(), 'nickname': fields.String(),
+                                                        'first_name': fields.String(), 'last_name': fields.String(),
+                                                        'email': fields.String(), 'registered_on': fields.DateTime(),
+                                                        'last_seen': fields.DateTime()})),
+                         required=False, description='Group members.'),
+    'permissions': fields.List(fields.Nested(api_group.model('group_permissions',
+                                                             {'id': fields.Integer,
+                                                              'name': fields.String})),
+                               required=False, description='Group permissions.'),
+})
+
+
+@api_group.route('/<int:id>')
+@api_group.response(404, 'Group not found')
+@api_group.param('id', 'The group identifier')
+class GroupResource(Resource):
+    @jwt_required
+    @api_group.doc('get_group')
+    @api_group.marshal_with(group_model)
+    def get(self, id):
+        """Fetch a user given its identifier"""
+        group = Group.get_by_id(id)
+        if group is not None:
+            return group
+        api_group.abort(404)
+
+    @jwt_required
+    @api_group.doc('delete_todo')
+    @api_group.response(204, 'Todo deleted')
+    def delete(self, id):
+        '''Delete a task given its identifier'''
+        group = Group.get_by_id(id)
+        if group is not None:
+            group.delete()
+            return '', 204
+        api_group.abort(404)
+
+    @jwt_required
+    @api_group.doc('update_group')
+    @api_group.expect(group_model)
+    @api_group.marshal_with(group_model)
+    def put(self, id):
+        '''Update a task given its identifier'''
+        group = Group.get_by_id(id)
+        if group is not None:
+            group.name = api_group["name"]
+            db.session.commit()
+            return group
+        api_group.abort(404)
+
+
+@api_group.route('')
+class GroupList(Resource):
+    @jwt_required
+    @api_group.doc('groups')
+    @api_group.marshal_list_with(group_model)
+    def get(self):
+        """
+        List all groups
+        :return: groups
+        """
+        return Group.get_all()
+
+    @jwt_required
+    @api_group.doc('create_group')
+    @api_group.expect(group_model)
+    @api_group.marshal_with(group_model, code=201)
+    def post(self):
+        group = Group(**api_group.payload)
+        db.session.add(group)
+        db.session.commit()
+        return group
--- a/backend/api/models.py
+++ b/backend/api/models.py
@@ -0,0 +1,107 @@
+from flask_restx import fields
+from backend.api import api_user, api_recorder, api_v1, api_state
+
+generic_id_parser = api_v1.parser()
+generic_id_parser.add_argument('id', type=str, required=True, store_missing=False)
+
+user_model = api_user.model('User', {
+    'id': fields.String(required=True, description='The user\'s identifier'),
+    'first_name': fields.String(required=True, description='The user\'s first name'),
+    'last_name': fields.String(required=True, description='The user\'s last name'),
+    'email': fields.String(required=True, description='The user\'s email address'),
+    'nickname': fields.String(required=False, description='The user\'s nick name'),
+    'last_seen': fields.DateTime(required=False, description='Last time user logged in'),
+    'last_time_modified': fields.DateTime(required=False, description='Last time user was modified'),
+    'role': fields.String(required=False, description='Role a user might have (in addition to group memberships)'),
+    'effective_permissions': fields.List(
+        fields.String(required=True), required=False, description="List of permissions (groups + (optional) role)."
+    ),
+    'groups': fields.List(
+        fields.Nested(api_user.model('user_group', {'id': fields.Integer(), 'name': fields.String()})),
+        required=False, description='Group memberships.'),
+    'favorite_recorders': fields.List(
+        fields.Nested(api_user.model('favorite_recorder',
+                                     {'id': fields.Integer(), 'name': fields.String(), 'offline': fields.Boolean(),
+                                      'created_at': fields.DateTime(), 'last_time_modified': fields.DateTime()})),
+        required=False, description='Favorite recorders.'),
+})
+
+recorder_model = api_recorder.model('Recorder', {
+    'id': fields.String(required=False, description='The recorder\'s identifier'),
+    'created_at': fields.DateTime(required=False, description='Creation date of the recorder'),
+    'last_time_modified': fields.DateTime(required=False, description='Creation date of the recorder'),
+    'name': fields.String(min_length=3, required=True, description='The recorder\'s name'),
+    'model_name': fields.String(min_length=3, required=True,
+                                description='The recorder\'s model name (might slightly '
+                                            'differ from actual name of the model)'),
+    'serial_number': fields.String(required=False, description='The recorder\'s serial number'),
+    'firmware_version': fields.String(required=False, description='The recorder\'s firmware'),
+
+    'description': fields.String(required=False, description='The recorder\'s description'),
+    'locked': fields.Boolean(required=False, description='Indicates whether the recorder settings can be altered'),
+    'lock_message': fields.String(required=False, description='Optional: message explaining lock state'),
+    'offline': fields.Boolean(required=False,
+                              description='Should be set when recorder is disconnected for maintenance, etc.'),
+    'additional_camera_connected': fields.Boolean(required=False,
+                                                  description='Indicates whether an additional camera is connected'),
+    'ip': fields.String(required=False, description='The recorder\'s IP address'),
+    'mac': fields.String(required=False, description='The recorder\'s IP address'),
+    'network_name': fields.String(required=False, description='The recorder\'s network name'),
+    'ssh_port': fields.Integer(required=True, default=22, description='The recorder\'s SSH port number'),
+    'telnet_port': fields.Integer(required=True, default=23, description='The recorder\'s telnet port number'),
+    # 'use_telnet_instead_ssh': fields.Boolean(required=False, default=False,
+    #                                         description='If this is set, telnet will be used instead of ssh. '
+    #                                                     'This might require specific commands.'),
+    'recorder_model': fields.Nested(api_recorder.model('recorder_model',
+                                                       {'id': fields.Integer(),
+                                                        'name': fields.String(attribute="model_name", )}),
+                                    required=False,
+                                    allow_null=True,
+                                    skip_none=False,
+                                    description='Model of the recorder.'),
+    'room': fields.Nested(api_recorder.model('recorder_room',
+                                             {'id': fields.Integer(), 'name': fields.String(),
+                                              'number': fields.String(), 'alternate_name': fields.String()}),
+                          r0equired=False,
+                          allow_null=True,
+                          skip_none=False,
+                          description='Room in which the recorder is located.'),
+    'virtual_commands': fields.List(fields.Nested(api_recorder.model('recorder_virtual_commands',
+                                                                     {'id': fields.Integer(),
+                                                                      'name': fields.String()})))
+})
+
+recorder_command_model = api_recorder.model('Recorder Command', {
+    'id': fields.String(required=False, description='The recorder command\'s identifier'),
+    'name': fields.String(required=True, description='The recorder command\'s name'),
+    'alternative_name': fields.String(required=False, description='The recorder command\'s alternative name'),
+    'disabled': fields.Boolean(required=False, description='Indicates if the recorder command is disabled'),
+    'created_at': fields.DateTime(required=False, description='Creation date of the recorder'),
+    'last_time_modified': fields.DateTime(required=False),
+    'description': fields.String(required=False, description='The recorder command\'s description'),
+    'parameters': fields.Raw(required=True, description='The recorder parameters'),
+    'recorder_model': fields.Nested(api_recorder.model('recorder_command_models',
+                                                       {'id': fields.Integer(),
+                                                        'name': fields.String(attribute="model_name", )})),
+})
+
+recorder_model_model = api_recorder.model('Recorder Model', {
+    'id': fields.String(required=False, description='The recorder model\'s identifier'),
+    'name': fields.String(attribute="model_name", required=True, description='The recorder model\'s name'),
+    'created_at': fields.DateTime(required=False, description='Creation date of the recorder'),
+    'last_time_modified': fields.DateTime(required=False),
+    'notes': fields.String(required=False, description='The recorder model\'s notes'),
+    'requires_username': fields.Boolean(),
+    'requires_password': fields.Boolean(),
+
+    'recorders': fields.List(fields.Nested(api_recorder.model('recorder_model',
+                                                              {'id': fields.Integer(),
+                                                               'name': fields.String(attribute="model_name", ),
+                                                               'network_name': fields.String(),
+                                                               'ip': fields.String()})), required=False,
+                             description='Model of the recorder.'),
+    'commands': fields.List(fields.Nested(recorder_command_model), attribute="recorder_commands")
+})
+
+state_model = api_state.model('Recorder', {
+})
--- a/backend/api/permission_api.py
+++ b/backend/api/permission_api.py
@@ -0,0 +1,91 @@
+#  Copyright (c) 2019. Tobias Kurze
+"""
+This module provides functions related to authentication through the API.
+For example: listing of available auth providers or registration of users.
+
+Login through API does not start a new session, but instead returns JWT.
+"""
+from flask_jwt_extended import jwt_required
+from flask_restx import fields, Resource
+
+from backend import db
+from backend.api import api_permissions
+from backend.models.user_model import Permission
+
+permission_model = api_permissions.model('Permission', {
+    'id': fields.String(required=False, description='The permission\'s identifier'),
+    'name': fields.String(required=True, description='The permission\'s name'),
+    'description': fields.String(required=False, description='The permission\'s description'),
+    'groups': fields.List(fields.Nested(api_permissions.model('group_member',
+                                                              {'id': fields.Integer(),
+                                                               'name': fields.String(),
+                                                               'description': fields.String()})),
+                          required=False, description='Groups having the permission.'),
+    'access_control_entry': fields.Nested(api_permissions.model('group_member',
+                                                                {'id': fields.Integer(),
+                                                                 'name': fields.String(),
+                                                                 'url': fields.String()}),
+                                          required=False, description="Access Control Entry"),
+})
+
+
+@api_permissions.route('/<int:id>')
+@api_permissions.response(404, 'permission not found')
+@api_permissions.param('id', 'The permission identifier')
+class PermissionResource(Resource):
+    @jwt_required
+    @api_permissions.doc('get_permission')
+    @api_permissions.marshal_with(permission_model)
+    def get(self, id):
+        """Fetch a user given its identifier"""
+        permission = Permission.get_by_id(id)
+        if permission is not None:
+            return permission
+        api_permissions.abort(404)
+
+    @jwt_required
+    @api_permissions.doc('delete_permission')
+    @api_permissions.response(204, 'permission deleted')
+    def delete(self, id):
+        """Delete a permission given its identifier"""
+        permission = Permission.get_by_id(id)
+        if permission is not None:
+            permission.delete()
+            return '', 204
+        api_permissions.abort(404)
+
+    @jwt_required
+    @api_permissions.doc('update_permission')
+    @api_permissions.expect(permission_model)
+    @api_permissions.marshal_with(permission_model)
+    def put(self, id):
+        """Update a task given its identifier"""
+        permission = Permission.get_by_id(id)
+        if permission is not None:
+            permission.name = api_permissions["name"]
+            db.session.commit()
+            return permission
+        api_permissions.abort(404)
+
+
+@api_permissions.route('')
+class PermissionList(Resource):
+    @jwt_required
+    @api_permissions.doc('permissions')
+    @api_permissions.marshal_list_with(permission_model)
+    def get(self):
+        """
+        List all permissions
+        :return: permissions
+        """
+        return Permission.get_all()
+
+    @jwt_required
+    @api_permissions.doc('create_permission')
+    @api_permissions.expect(permission_model)
+    @api_permissions.marshal_with(permission_model, code=201)
+    def post(self):
+        permission = Permission(**api_permissions.payload)
+        db.session.add(permission)
+        db.session.commit()
+        return permission
--- a/backend/api/recorder_api.py
+++ b/backend/api/recorder_api.py
@@ -0,0 +1,205 @@
+#  Copyright (c) 2019. Tobias Kurze
+"""
+This module provides functions related to recorders through the API.
+"""
+from datetime import datetime
+from pprint import pprint
+
+from flask_jwt_extended import jwt_required
+from flask_restx import fields, Resource, inputs
+
+from backend import db, app
+from backend.api import api_recorder
+from backend.api.models import recorder_model, recorder_model_model, recorder_command_model
+from backend.models.recorder_model import Recorder, RecorderModel, RecorderCommand
+from backend.models.room_model import Room
+import backend.recorder_adapters as r_a
+
+
+# ==
+
+@api_recorder.route('/<int:id>')
+@api_recorder.response(404, 'Recorder not found')
+@api_recorder.param('id', 'The recorder identifier')
+class RecorderResource(Resource):
+    @jwt_required
+    @api_recorder.doc('get_recorder')
+    @api_recorder.marshal_with(recorder_model, skip_none=False)
+    def get(self, id):
+        """Fetch a recorder given its identifier"""
+        recorder = Recorder.query.get(id)
+        if recorder is not None:
+            return recorder
+        api_recorder.abort(404)
+
+    @jwt_required
+    @api_recorder.doc('delete_todo')
+    @api_recorder.response(204, 'Todo deleted')
+    def delete(self, id):
+        """Delete a recorder given its identifier"""
+        recorder = Recorder.query.get(id)
+        if recorder is not None:
+            db.session.delete(recorder)
+            db.session.commit()
+            return '', 204
+        api_recorder.abort(404)
+
+    recorder_update_parser = api_recorder.parser()
+    recorder_update_parser.add_argument('name', type=str, required=False, nullable=False, store_missing=False)
+    recorder_update_parser.add_argument('network_name', type=inputs.regex(inputs.netloc_regex), required=False, store_missing=False)
+    recorder_update_parser.add_argument('ip', type=inputs.ipv4, required=False, store_missing=False)
+    recorder_update_parser.add_argument('ip6', type=inputs.ipv6, required=False, store_missing=False)
+    recorder_update_parser.add_argument('ssh_port', type=inputs.int_range(0,65535), required=False, default=22, store_missing=False)
+    recorder_update_parser.add_argument('telnet_port', type=inputs.int_range(0,65535), required=False, default=23, store_missing=False)
+    recorder_update_parser.add_argument('room_id', type=int, required=False, store_missing=False)
+    recorder_update_parser.add_argument('offline', type=inputs.boolean, required=False, default=False, store_missing=False)
+    recorder_update_parser.add_argument('locked', type=inputs.boolean, required=False, default=False, store_missing=False)
+    recorder_update_parser.add_argument('lock_message', type=str, required=False, nullable=True, default=None,
+                                        store_missing=False)
+    recorder_update_parser.add_argument('model_id', type=int, required=False, store_missing=False)
+    recorder_update_parser.add_argument('description', type=str, required=False, nullable=True, default=None,
+                                        store_missing=False)
+    recorder_update_parser.add_argument('virtual_command_ids', action='split', nullable=True, default=[],
+                                        required=False, store_missing=False)
+
+    @jwt_required
+    @api_recorder.doc('update_recorder')
+    @api_recorder.expect(recorder_model)
+    def put(self, id):
+        """Update a recorder given its identifier"""
+        args = self.recorder_update_parser.parse_args(strict=True)
+        args['last_time_modified'] = datetime.utcnow()
+        pprint(args)
+
+        num_rows_matched = Recorder.query.filter_by(id=id).update(args)
+        print(num_rows_matched)
+
+        if num_rows_matched < 1:
+            api_recorder.abort(404)
+        db.session.commit()
+        return "ok"
+
+
+@api_recorder.route('')
+class RecorderList(Resource):
+    @jwt_required
+    @api_recorder.doc('recorders')
+    @api_recorder.marshal_list_with(recorder_model, skip_none=False)
+    def get(self):
+        """
+        List all recorders
+        :return: recorders
+        """
+        return Recorder.get_all()
+
+    @jwt_required
+    @api_recorder.doc('create_recorder')
+    @api_recorder.expect(recorder_model)
+    @api_recorder.marshal_with(recorder_model, skip_none=False, code=201)
+    def post(self):
+        if "room_id" in api_recorder.payload:
+            if api_recorder.payload["room_id"] is None:
+                api_recorder.payload["room"] = None
+            else:
+                room = Room.query.get(api_recorder.payload["room_id"])
+                if room is not None:
+                    api_recorder.payload["room"] = room
+                else:
+                    return "specified room (id: {}) does not exist!".format(api_recorder.payload["room_id"]), 404
+        if "recorder_model_id" in api_recorder.payload:
+            if api_recorder.payload["recorder_model_id"] is None:
+                api_recorder.payload["recorder_model"] = None
+            else:
+                rec_model = RecorderModel.query.get(api_recorder.payload["recorder_model_id"])
+                if rec_model is not None:
+                    api_recorder.payload["recorder_model"] = rec_model
+                else:
+                    return "specified recorder model (id: {}) does not exist!".format(
+                        api_recorder.payload["recorder_model_id"]), 404
+        recorder = Recorder(**api_recorder.payload)
+        db.session.add(recorder)
+        db.session.commit()
+        return recorder
+
+
+@api_recorder.route('/model/<int:id>')
+@api_recorder.response(404, 'Recorder Model not found')
+@api_recorder.param('id', 'The recorder model identifier')
+class RecorderModelResource(Resource):
+    @jwt_required
+    @api_recorder.doc('get_recorder_model')
+    @api_recorder.marshal_with(recorder_model_model)
+    def get(self, id):
+        """Fetch a recorder model given its identifier"""
+        recorder_model = RecorderModel.query.get(id)
+        if recorder_model is not None:
+            return recorder_model
+        api_recorder.abort(404)
+
+    recorder_model_parser = api_recorder.parser()
+    recorder_model_parser.add_argument('notes', type=str, required=True)
+
+    @jwt_required
+    @api_recorder.doc('update_recorder_model')
+    @api_recorder.expect(recorder_model_parser)
+    @api_recorder.marshal_with(recorder_model_model)
+    def put(self, id):
+        """Update a recorder_model given its identifier"""
+        num_rows_matched = RecorderModel.query.filter_by(id=id).update(api_recorder.payload)
+        if num_rows_matched < 1:
+            api_recorder.abort(404)
+        db.session.commit()
+        return "ok"
+
+
+@api_recorder.route('/model')
+class RecorderModelList(Resource):
+    @jwt_required
+    @api_recorder.doc('recorders')
+    @api_recorder.marshal_list_with(recorder_model_model)
+    def get(self):
+        return RecorderModel.get_all()
+
+
+@api_recorder.route('/command/<int:id>')
+@api_recorder.response(404, 'Recorder Command not found')
+@api_recorder.param('id', 'The recorder command identifier')
+class RecorderCommandResource(Resource):
+    @jwt_required
+    @api_recorder.doc('get_recorder_command')
+    @api_recorder.marshal_with(recorder_command_model)
+    def get(self, id):
+        """Fetch a recorder command given its identifier"""
+        recorder_command = RecorderCommand.query.get(id)
+        if recorder_command is not None:
+            return recorder_command
+        api_recorder.abort(404)
+
+    recorder_command_model_parser = api_recorder.parser()
+    recorder_command_model_parser.add_argument('description', type=str, required=False)
+    recorder_command_model_parser.add_argument('alternative_name', type=str, required=False)
+
+    @jwt_required
+    @api_recorder.doc('update_recorder_command')
+    @api_recorder.expect(recorder_command_model_parser)
+    @api_recorder.marshal_with(recorder_command_model)
+    def put(self, id):
+        """Update a recorder command given its identifier"""
+        num_rows_matched = RecorderCommand.query.filter_by(id=id).update(api_recorder.payload)
+        if num_rows_matched < 1:
+            api_recorder.abort(404)
+        db.session.commit()
+        return "ok"
+
+
+@api_recorder.route('/command')
+class RecorderCommandList(Resource):
+    @jwt_required
+    @api_recorder.doc('recorder_commands')
+    @api_recorder.marshal_list_with(recorder_command_model)
+    def get(self):
+        """
+        List all recorders commands
+        :return: recorder commands
+        """
+        return RecorderCommand.get_all()
--- a/backend/api/room_api.py
+++ b/backend/api/room_api.py
@@ -0,0 +1,122 @@
+#  Copyright (c) 2019. Tobias Kurze
+"""
+This module provides functions related to authentication through the API.
+For example: listing of available auth providers or registration of users.
+
+Login through API does not start a new session, but instead returns JWT.
+"""
+from flask_jwt_extended import jwt_required
+from flask_restx import fields, Resource
+from sqlalchemy import exc
+
+from backend import db, app
+from backend.api import api_room
+from backend.models.room_model import Room
+from backend.models.recorder_model import Recorder
+
+room_model = api_room.model('Room', {
+    'id': fields.String(required=False, description='The room\'s identifier'),
+    'created_at': fields.DateTime(required=False, description='Creation date of the room info'),
+    'name': fields.String(required=True, description='The room\'s name'),
+    'alternate_name': fields.String(required=False, description='The room\'s alternate name'),
+    'comment': fields.String(required=False, description='The room\'s comment'),
+    'number': fields.String(required=True, description='The room\'s number'),
+    'building_name': fields.String(required=False, description='The building\'s name'),
+    'building_number': fields.String(required=False, description='The building\'s number'),
+    'recorder': fields.Nested(api_room.model('room_recorder',
+                                             {'id': fields.Integer(), 'name': fields.String(),
+                                              'ip': fields.String(), 'network_name': fields.String()}),
+                              allow_null=True,
+                              skip_none=False,
+                              required=False,
+                              description='Room recorder.'),
+
+})
+
+
+@api_room.route('/<int:id>')
+@api_room.response(404, 'Room not found')
+@api_room.param('id', 'The room identifier')
+class RoomResource(Resource):
+    @jwt_required
+    @api_room.doc('get_room')
+    @api_room.marshal_with(room_model, skip_none=False)
+    def get(self, id):
+        """Fetch a user given its identifier"""
+        room = Room.query.get(id)
+        if room is not None:
+            return room
+        api_room.abort(404)
+
+    @jwt_required
+    @api_room.doc('delete_todo')
+    @api_room.response(204, 'Todo deleted')
+    def delete(self, id):
+        '''Delete a task given its identifier'''
+        room = Room.query.get(id)
+        if room is not None:
+            db.session.delete(room)
+            db.session.commit()
+            return '', 204
+        api_room.abort(404)
+
+    @jwt_required
+    @api_room.doc('update_room')
+    @api_room.expect(room_model)
+    def put(self, id):
+        app.logger.debug(api_room.payload)
+        '''Update a task given its identifier'''
+        if "recorder_id" in api_room.payload:
+            if api_room.payload["recorder_id"] is None:
+                api_room.payload["recorder"] = None
+            else:
+                recorder = Recorder.query.get(api_room.payload["recorder_id"])
+                if recorder is not None:
+                    api_room.payload["recorder"] = recorder
+                else:
+                    return "specified recorder (id: {}) does not exist!".format(api_room.payload["recorder_id"]), 404
+            room = Room.query.get(id)
+            if room is not None:
+                room.recorder = api_room.payload["recorder"]
+        else:
+            num_rows_matched = Room.query.filter_by(id=id).update(api_room.payload)
+        db.session.commit()
+        return "ok"
+        api_room.abort(404)
+
+
+@api_room.route('')
+class RoomList(Resource):
+    @jwt_required
+    @api_room.doc('rooms')
+    @api_room.marshal_list_with(room_model, skip_none=False)
+    def get(self):
+        """
+        List all rooms
+        :return: rooms
+        """
+        return Room.get_all()
+
+    @jwt_required
+    @api_room.doc('create_room')
+    @api_room.expect(room_model)
+    @api_room.marshal_with(room_model, skip_none=False, code=201)
+    def post(self):
+        if "recorder_id" in api_room.payload:
+            if api_room.payload["recorder_id"] is None:
+                api_room.payload["recorder"] = None
+            else:
+                recorder = Recorder.query.get(api_room.payload["recorder_id"])
+                if recorder is not None:
+                    api_room.payload["recorder"] = recorder
+                else:
+                    return "specified recorder (id: {}) does not exist!".format(api_room.payload["recorder_id"]), 404
+            del api_room.payload["recorder_id"]
+        room = Room(**api_room.payload)
+        db.session.add(room)
+        try:
+            db.session.commit()
+            return room
+        except exc.IntegrityError as e:
+            db.session.rollback()
+            return str(e.detail), 400
--- a/backend/api/state_api.py
+++ b/backend/api/state_api.py
@@ -0,0 +1,67 @@
+#  Copyright (c) 2019. Tobias Kurze
+"""
+This module provides functions related to object states through the API.
+"""
+from datetime import datetime
+from pprint import pprint
+
+from flask_jwt_extended import jwt_required
+from flask_restx import fields, Resource, inputs
+
+from backend import db, app
+from backend.api import api_state
+from backend.api.models import recorder_model, recorder_model_model, recorder_command_model, state_model
+from backend.cron import async_cron_recorder_checker
+from backend.cron.cron_state_checker import StateChecker
+from backend.models.recorder_model import Recorder, RecorderModel, RecorderCommand
+from backend.models.room_model import Room
+import backend.recorder_adapters as r_a
+
+
+# ==
+from backend.tools.recorder_state_checker import get_recorder_adapter, check_capture_agent_state, check_stream_sanity
+
+
+@api_state.route('/recorder/<int:id>')
+@api_state.response(404, 'Recorder not found')
+@api_state.param('id', 'The recorder identifier')
+class RecorderStateResource(Resource):
+    @jwt_required
+    @api_state.doc('get_recorder_state')
+    @api_state.marshal_with(state_model, skip_none=False)
+    def get(self, id):
+        """Fetch a recorder given its identifier"""
+        recorder: Recorder = Recorder.query.get(id)
+        if recorder is None:
+            api_state.abort(404)
+
+        current_states_by_checker = async_cron_recorder_checker.get_current_state()
+        state = async_cron_recorder_checker.get_current_state_for_recorder_id(recorder.id)
+        if state is None:
+            state_checker = StateChecker([check_capture_agent_state], Recorder)
+            state_checker.add_object_to_state_check(recorder)
+            state_checker.check_object_state()
+            state = state_checker.get_current_state_for_recorder_id(recorder.id)
+        if not state.get('state_ok', False):  # if state is not OK, return state -> no more checks!
+            return state
+
+        # do additional checks, such as: check for single color, sound check, etc.
+        stream_state = check_stream_sanity(recorder)
+        print(stream_state)
+
+        return stream_state
+
+
+
+
+@api_state.route('/recorder')
+class RecorderStateList(Resource):
+    @jwt_required
+    @api_state.doc('get_recorders_states')
+    @api_state.marshal_list_with(state_model, skip_none=False)
+    def get(self):
+        """
+        Get state of all recorders
+        :return: state
+        """
+        return Recorder.get_all()
--- a/backend/api/user_api.py
+++ b/backend/api/user_api.py
@@ -0,0 +1,129 @@
+#  Copyright (c) 2019. Tobias Kurze
+"""
+This module provides functions related to authentication through the API.
+For example: listing of available auth providers or registration of users.
+
+Login through API does not start a new session, but instead returns JWT.
+"""
+from datetime import datetime
+from pprint import pprint
+
+from flask_jwt_extended import get_jwt_identity, jwt_required, current_user
+from flask_restx import Resource, fields, inputs, abort
+
+from backend import db, app, jwt_auth
+from backend.api import api_user
+from backend.api.models import user_model, recorder_model, generic_id_parser
+from backend.models import Recorder
+from backend.models.user_model import User, Group
+
+
+user_update_parser = api_user.parser()
+user_update_parser.add_argument('email', type=inputs.email(), required=False, nullable=False, store_missing=False)
+user_update_parser.add_argument('nickname', type=str, required=False, store_missing=False)
+user_update_parser.add_argument('first_name', type=str, required=False, store_missing=False)
+user_update_parser.add_argument('last_name', type=str, required=False, store_missing=False)
+
+
+@api_user.route('/profile')
+class Profile(Resource):
+    @jwt_required
+    @api_user.marshal_with(user_model)
+    def get(self):
+        """Get infos about logged in user."""
+        current_user_id = get_jwt_identity()
+        app.logger.info(current_user_id)
+        return User.get_by_identifier(current_user_id)
+
+    @jwt_required
+    @api_user.expect(user_update_parser)
+    def put(self):
+        args = user_update_parser.parse_args()
+        args['last_time_modified'] = datetime.utcnow()
+        pprint(args)
+        print(current_user)
+        num_rows_matched = User.query.filter_by(id=current_user.id).update(args)
+        print(num_rows_matched)
+
+        if num_rows_matched < 1:
+            api_user.abort("Nothing has been updated!")
+        db.session.commit()
+        return "ok"
+
+
+@api_user.route('/profile/favorite_recorders')
+class UserFavoriteRecorders(Resource):
+    @jwt_required
+    @api_user.marshal_list_with(recorder_model)
+    def get(self):
+        try:
+            current_user_id = get_jwt_identity()
+            return User.get_by_identifier(current_user_id).favorite_recorders
+        except AttributeError:
+            abort(404, "User not found!")
+
+    @jwt_required
+    @api_user.expect(generic_id_parser)
+    @api_user.marshal_list_with(recorder_model)
+    def put(self):
+        try:
+            args = generic_id_parser.parse_args()
+            current_user_id = get_jwt_identity()
+            user = User.get_by_identifier(current_user_id)
+            print(args)
+            recorder = Recorder.get_by_identifier(args["id"])
+            print(recorder)
+            if recorder is None:
+                abort(404, "(Specified [id: {}]) recorder not found!".format(args["id"]))
+            user.favorite_recorders.append(recorder)
+            db.session.commit()
+            return user.favorite_recorders
+        except AttributeError:
+            abort(404, "User not found!")
+
+
+@api_user.route('')
+class UserList(Resource):
+    """
+    This is a test class.
+    """
+
+    # @jwt_auth.login_required
+    @jwt_required
+    @api_user.doc('users')
+    @api_user.marshal_list_with(user_model)
+    def get(self):
+        """
+        just a test!
+        :return: Hello: World
+        """
+        current_user = get_jwt_identity()
+        app.logger.info(current_user)
+        return User.get_all()
+
+    @jwt_required
+    @api_user.doc('create_group')
+    @api_user.expect(user_model)
+    @api_user.marshal_with(user_model, code=201)
+    def post(self):
+        user = User(**api_user.payload)
+        db.session.add(user)
+        db.session.commit()
+        return user
+
+
+@api_user.route('/<id>')
+@api_user.param('id', 'The user identifier')
+@api_user.response(404, 'User not found')
+class UserResource(Resource):
+    @jwt_auth.login_required
+    @api_user.doc('get_user')
+    @api_user.marshal_with(user_model)
+    def get(self, id):
+        """Fetch a user given its identifier"""
+        user = User.get_by_id(id)
+        if user is not None:
+            return user
+        api_user.abort(404)
+
+# api_user.add_resource(UserResource, '/')
--- a/backend/api/virtual_command_api.py
+++ b/backend/api/virtual_command_api.py
@@ -0,0 +1,134 @@
+#  Copyright (c) 2019. Tobias Kurze
+"""
+This module provides functions related to authentication through the API.
+For example: listing of available auth providers or registration of users.
+
+Login through API does not start a new session, but instead returns JWT.
+"""
+import inspect
+import pkgutil
+from pprint import pprint
+
+from flask_jwt_extended import jwt_required
+from flask_restx import fields, Resource
+
+from backend import db, app
+from backend.api import api_virtual_command
+from backend.models.recorder_model import Recorder, RecorderModel, RecorderCommand
+from backend.models.room_model import Room
+import backend.recorder_adapters as r_a
+
+virtual_command_model = api_virtual_command.model('VirtualCommand', {
+    'id': fields.String(required=False, description='The recorder\'s identifier'),
+    'created_at': fields.DateTime(required=False, description='Creation date of the recorder'),
+    'name': fields.String(min_length=3, required=True, description='The recorder\'s name'),
+    'description': fields.String(required=False, description='The recorder\'s description'),
+
+    'parent_virtual_command': fields.Nested(api_virtual_command.model('VirtualCommandParent',
+                                                                      {
+                                                                          'id': fields.String(required=False,
+                                                                                              description='The recorder\'s identifier'),
+                                                                          'name': fields.String(min_length=3,
+                                                                                                required=True,
+                                                                                                description='The recorder\'s name'),
+                                                                      },
+                                                                      required=False,
+                                                                      allow_null=True,
+                                                                      skip_none=False,
+                                                                      description='Parent virtual command.')),
+    'room': fields.Nested(api_virtual_command.model('recorder_room',
+                                                    {'id': fields.Integer(), 'name': fields.String(),
+                                                     'number': fields.String(), 'alternate_name': fields.String()}),
+                          r0equired=False,
+                          allow_null=True,
+                          skip_none=False,
+                          description='Room in which the recorder is located.')
+})
+
+
+# ==
+
+@api_virtual_command.route('/<int:id>')
+@api_virtual_command.response(404, 'Recorder not found')
+@api_virtual_command.param('id', 'The recorder identifier')
+class VirtualCommandResource(Resource):
+    @jwt_required
+    @api_virtual_command.doc('get_recorder')
+    @api_virtual_command.marshal_with(virtual_command_model, skip_none=False)
+    def get(self, id):
+        """Fetch a recorder given its identifier"""
+        recorder = Recorder.query.get(id)
+        if recorder is not None:
+            return recorder
+        api_virtual_command.abort(404)
+
+    @jwt_required
+    @api_virtual_command.doc('delete_todo')
+    @api_virtual_command.response(204, 'Todo deleted')
+    def delete(self, id):
+        """Delete a recorder given its identifier"""
+        recorder = Recorder.query.get(id)
+        if recorder is not None:
+            db.session.delete(recorder)
+            db.session.commit()
+            return '', 204
+        api_virtual_command.abort(404)
+
+    virtual_command_model_parser = api_virtual_command.parser()
+    virtual_command_model_parser.add_argument('notes', type=str, required=True)
+
+    @jwt_required
+    @api_virtual_command.doc('update_recorder')
+    @api_virtual_command.expect(virtual_command_model_parser)
+    def put(self, id):
+        """Update a recorder given its identifier"""
+        num_rows_matched = Recorder.query.filter_by(id=id).update(api_virtual_command.payload)
+        if num_rows_matched < 1:
+            api_virtual_command.abort(404)
+        db.session.commit()
+        return "ok"
+
+
+@api_virtual_command.route('')
+class RecorderList(Resource):
+    @jwt_required
+    @api_virtual_command.doc('recorders')
+    @api_virtual_command.marshal_list_with(virtual_command_model, skip_none=False)
+    def get(self):
+        """
+        List all recorders
+        :return: recorders
+        """
+        return Recorder.get_all()
+
+    virtual_command_model_parser = api_virtual_command.parser()
+    virtual_command_model_parser.add_argument('notes', type=str, required=True)
+
+    @jwt_required
+    @api_virtual_command.doc('create_recorder')
+    @api_virtual_command.expect(virtual_command_model_parser)
+    @api_virtual_command.marshal_with(virtual_command_model, skip_none=False, code=201)
+    def post(self):
+        if "room_id" in api_virtual_command.payload:
+            if api_virtual_command.payload["room_id"] is None:
+                api_virtual_command.payload["room"] = None
+            else:
+                room = Room.query.get(api_virtual_command.payload["room_id"])
+                if room is not None:
+                    api_virtual_command.payload["room"] = room
+                else:
+                    return "specified room (id: {}) does not exist!".format(api_virtual_command.payload["room_id"]), 404
+        if "recorder_model_id" in api_virtual_command.payload:
+            if api_virtual_command.payload["recorder_model_id"] is None:
+                api_virtual_command.payload["recorder_model"] = None
+            else:
+                rec_model = RecorderModel.query.get(api_virtual_command.payload["recorder_model_id"])
+                if rec_model is not None:
+                    api_virtual_command.payload["recorder_model"] = rec_model
+                else:
+                    return "specified recorder model (id: {}) does not exist!".format(
+                        api_virtual_command.payload["recorder_model_id"]), 404
+        recorder = Recorder(**api_virtual_command.payload)
+        db.session.add(recorder)
+        db.session.commit()
+        return recorder
--- a/backend/auth/init.py
+++ b/backend/auth/init.py
@@ -0,0 +1,78 @@
+#  Copyright (c) 2019. Tobias Kurze
+"""
+Base module for auth aspects.
+
+Also this module contains mainly code for login through HTML pages served by the backend.
+If frontend pages are build by frontend code (JS, etc.) authentication should consider using api functions.
+(For more info, see api.auth_api.py.)
+
+This code uses login_user and logout user (to start and end sessions) ... API code returns JWTs.
+"""
+from flask import Blueprint, jsonify, url_for
+from flask_login import logout_user, LoginManager
+from werkzeug.routing import BuildError
+
+from backend import jwt_extended
+from backend.models import BlacklistToken, User
+
+auth_bp = Blueprint('auth', __name__, url_prefix='/auth', template_folder='templates')
+
+from backend.auth.config import AUTH_PROVIDERS, DEFAULT_FRONTEND_PROVIDER
+from backend.auth.oidc_config import OIDC_PROVIDERS
+
+from backend.auth.oidc import oidc_auth
+
+from .basic_auth import *
+
+
+def auth_decorator(): # custom decorator
+    pass
+
+
+@auth_bp.route('/login', methods=['GET', 'POST'])
+def login():
+    try:
+        prov = AUTH_PROVIDERS[DEFAULT_FRONTEND_PROVIDER]
+    except KeyError:
+        return "No known default provider specified!"
+    url = prov["url"]
+    try:
+        url = url_for(prov["url"], next=request.endpoint)
+    except BuildError as e:
+        pass
+        #logger.log("Can't create endpoint for '{}' (specified provider: {}).".format(e.endpoint, DEFAULT_PROVIDER))
+    return redirect(url)
+
+
+@auth_bp.route('/login_select', methods=['GET'])
+def login_select():
+    return render_template('login_select.html', providers=AUTH_PROVIDERS)
+
+
+@auth_bp.route('/logout', methods=('GET', ))
+def logout():
+    logout_user()
+
+
+@jwt_extended.user_claims_loader
+def add_claims_to_access_token(user):
+    if isinstance(user, str):
+        return {}
+    return {'role': user.role, 'groups': [g.to_dict() for g in user.groups]}
+
+
+@jwt_extended.user_identity_loader
+def user_identity_loader(user):
+    return user.email
+
+
+@jwt_extended.user_loader_callback_loader
+def user_loader_callback(identity):
+    print("### user_loader_callback_loader")
+    return User.get_by_identifier(identity)
+
+
+@jwt_extended.token_in_blacklist_loader
+def check_if_token_in_blacklist(decrypted_token):
+    jti = decrypted_token['jti']
+    return BlacklistToken.get_by_token(jti) is not None
--- a/backend/auth/basic_auth.py
+++ b/backend/auth/basic_auth.py
@@ -0,0 +1,22 @@
+# Route for handling the login page logic
+from flask import request, redirect, render_template
+from flask_login import login_user
+
+from backend.auth import auth_bp
+from backend.models.user_model import User
+
+
+@auth_bp.route('/base_login', methods=['GET', 'POST'])
+def base_login():
+    error = None
+    if request.method == 'POST':
+        user = User.authenticate(email=request.form['email'], password=request.form['password'])
+        if user is None:
+            error = 'Invalid Credentials. Please try again.'
+        else:
+            login_user(user)
+            return redirect("/")
+
+    return render_template('login.html', error=error)
+
+
--- a/backend/auth/config.py
+++ b/backend/auth/config.py
@@ -0,0 +1,29 @@
+from typing import Dict, List
+
+AUTH_PROVIDERS: Dict[str, Dict[str, str]] = {
+    "KIT OIDC":
+        {
+            "type": "oidc",
+            "url": "auth_api.oidc"
+        },
+    "Base Login":
+        {
+            "type": "login_form",
+            "url": "auth.base_login"
+        },
+    "KIT OIDC (API)":
+        {
+            "type": "api_oidc",
+            "url": "auth_api.oidc"
+        },
+    "User-Password (API)":
+        {
+            "type": "api_login_form",
+            "url": "auth_api.login"
+        },
+}
+
+#DEFAULT_PROVIDER: str = "Base Login"
+DEFAULT_PROVIDER: str = "KIT OIDC (API)"
+
+DEFAULT_FRONTEND_PROVIDER: str = "Base Login"
--- a/backend/auth/oidc.py
+++ b/backend/auth/oidc.py
@@ -0,0 +1,80 @@
+#  Copyright (c) 2019. Tobias Kurze
+"""
+OIDC login auth module
+"""
+from datetime import datetime
+
+import flask
+from flask import jsonify, redirect, url_for
+from flask_login import login_user
+from flask_pyoidc.flask_pyoidc import OIDCAuthentication
+from flask_pyoidc.user_session import UserSession
+
+from backend import app, db
+from backend.models.user_model import User
+from . import auth_bp
+from .oidc_config import PROVIDER_NAME, OIDC_PROVIDERS
+
+
+OIDCAuthentication.oidc_auth_orig = OIDCAuthentication.oidc_auth
+OIDCAuthentication.oidc_logout_orig = OIDCAuthentication.oidc_logout
+
+
+def oidc_auth_default_provider(self):
+    """monkey patch oidc_auth"""
+    return self.oidc_auth_orig(PROVIDER_NAME)
+
+
+def oidc_logout_default_provider(self):
+    """monkey patch oidc_logout"""
+    return self.oidc_logout_orig(PROVIDER_NAME)
+
+
+OIDCAuthentication.oidc_auth = oidc_auth_default_provider
+OIDCAuthentication.oidc_logout = oidc_logout_default_provider
+
+oidc_auth = OIDCAuthentication(OIDC_PROVIDERS)
+
+
+def create_or_retrieve_user_from_userinfo(userinfo):
+    """Updates and returns ar creates a user from userinfo (part of OIDC token)."""
+    try:
+        email = userinfo["email"]
+    except KeyError:
+        return None
+    user = User.get_by_identifier(email)
+
+    if user is not None:
+        app.logger.info("user found")
+        user.last_seen = datetime.utcnow()
+        # TODO: update user!
+        db.session.commit()
+        return user
+
+    user = User(email=email, first_name=userinfo.get("given_name", ""),
+                last_name=userinfo.get("family_name", ""))
+
+    app.logger.info("creating new user")
+
+    db.session.add(user)
+    db.session.commit()
+    return user
+
+
+
+@auth_bp.route('/oidc', methods=['GET'])
+@oidc_auth.oidc_auth()
+def oidc():
+    user_session = UserSession(flask.session)
+    app.logger.info(user_session.userinfo)
+    user = create_or_retrieve_user_from_userinfo(user_session.userinfo)
+    login_user(user)
+    return jsonify(id_token=user_session.id_token,
+                   access_token=flask.session['access_token'],
+                   userinfo=user_session.userinfo)
+
+
+@auth_bp.route('/oidc_logout', methods=['GET'])
+def oidc_logout():
+    oidc_auth.oidc_logout()
+    return redirect('/')
--- a/backend/auth/oidc_config.py
+++ b/backend/auth/oidc_config.py
@@ -0,0 +1,15 @@
+#  Copyright (c) 2019. Tobias Kurze
+from flask_pyoidc.provider_configuration import ClientMetadata, ProviderConfiguration
+
+REG_RESPONSE_CLIENT_ID = "lrc-test-bibliothek-kit-edu"
+REG_RESPONSE_CLIENT_SECRET = "d8531b30-0e6b-4280-b611-1e6c8b4911fa"
+
+CLIENT_METADATA = ClientMetadata(REG_RESPONSE_CLIENT_ID, REG_RESPONSE_CLIENT_SECRET)
+
+PROVIDER_URL = "https://oidc.scc.kit.edu/auth/realms/kit"
+PROVIDER_NAME = 'kit_oidc'
+PROVIDER_CONFIG = ProviderConfiguration(issuer=PROVIDER_URL,
+                                        client_metadata=CLIENT_METADATA,
+                                        auth_request_params={'scope': ['openid', 'email', 'profile']})
+
+OIDC_PROVIDERS = {PROVIDER_NAME: PROVIDER_CONFIG}
--- a/backend/auth/templates/login.html
+++ b/backend/auth/templates/login.html
@@ -0,0 +1,23 @@
+<html>
+  <head>
+    <title>Flask Intro - login page</title>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <link href="static/bootstrap.min.css" rel="stylesheet" media="screen">
+  </head>
+  <body>
+    <div class="container">
+      <h1>Please login</h1>
+      <br>
+      <form action="" method="post">
+        <input type="text" placeholder="E-Mail" name="email" value="{{
+          request.form.username }}">
+         <input type="password" placeholder="Password" name="password" value="{{
+          request.form.password }}">
+        <input class="btn btn-default" type="submit" value="Login">
+      </form>
+      {% if error %}
+        <p class="error"><strong>Error:</strong> {{ error }}
+      {% endif %}
+    </div>
+  </body>
+</html>
--- a/backend/auth/templates/login_select.html
+++ b/backend/auth/templates/login_select.html
@@ -0,0 +1,21 @@
+<html>
+<head>
+    <title>Flask Intro - login page</title>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <link href="static/bootstrap.min.css" rel="stylesheet" media="screen">
+</head>
+<body>
+<div class="container">
+    <h1>Please select login method</h1>
+    <br>
+    <ul>
+        {% for provider in providers %}
+        <li><a href="{{url_for(providers[provider].url)}}">{{ provider }} ({{ providers[provider].type }})</a></li>
+        {% endfor %}
+    </ul>
+    {% if error %}
+    <p class="error"><strong>Error:</strong> {{ error }}
+        {% endif %}
+</div>
+</body>
+</html>
--- a/backend/auth/utils.py
+++ b/backend/auth/utils.py
@@ -0,0 +1,42 @@
+import flask_jwt_extended
+from flask_jwt_extended import jwt_optional, get_jwt_identity
+from functools import wraps
+
+from backend import jwt_auth
+from backend.models.user_model import User
+
+
+def requires_permission_level(permission_level):
+    def decorator(f):
+        @wraps(f)
+        def decorated_function(*args, **kwargs):
+            if flask_jwt_extended.verify_jwt_in_request():
+                current_user_id = get_jwt_identity()
+                user = User.get_by_identifier(current_user_id)
+                if user is not None:
+                    if user.has_permission(permission_level):
+                    #for g in user.groups:
+                    #    if g.permissions
+                        #TODO
+                        pass
+                    else:
+                        pass
+                        # return FALSE
+            #if not session.get('email'):
+            #    return redirect(url_for('users.login'))
+
+            #user = User.find_by_email(session['email'])
+            #elif not user.allowed(access_level):
+            #    return redirect(url_for('users.profile', message="You do not have access to that page. Sorry!"))
+            return f(*args, **kwargs)
+        return decorated_function
+    return decorator
+
+
+def require_jwt():
+    def decorator(f):
+        @wraps(f)
+        def decorated_function(*args, **kwargs):
+            return jwt_auth.login_required(jwt_optional(f(*args, **kwargs)))
+        return decorated_function
+    return decorator
--- a/backend/config.py
+++ b/backend/config.py
--- a/backend/cron/init.py
+++ b/backend/cron/init.py
@@ -0,0 +1,98 @@
+# -*- coding: utf-8 -*-
+
+import logging
+import random
+import signal
+import sys
+import time
+from logging.handlers import TimedRotatingFileHandler
+from pprint import pprint
+
+from backend import app, main_logger
+
+from apscheduler.schedulers.background import BackgroundScheduler
+
+from backend.cron.cron_state_checker import async_cron_recorder_checker
+from backend.websocket.handlers import send_state_update_to_recorders
+
+cron_log_handler = TimedRotatingFileHandler(app.config.get('CRON_LOG_FILE'), interval=1, when='d', backupCount=3)
+cron_log_handler.setFormatter(logging.Formatter('[%(asctime)s] - %(funcName)20s() %(message)s'))
+cron_logger = logging.getLogger("lrc.cron")
+cron_logger.addHandler(cron_log_handler)
+logging.getLogger("apscheduler.scheduler").addHandler(cron_log_handler)
+logging.getLogger("apscheduler.executors.default").addHandler(cron_log_handler)
+
+scheduler = None
+
+
+def get_default_scheduler():
+    cron_logger.debug("creating scheduler!")
+    global scheduler
+    scheduler = BackgroundScheduler(timezone='utc')
+    scheduler.daemonic = False
+
+    return scheduler
+
+
+def add_default_jobs(sched=None, testing=False):
+    global scheduler
+    if sched is None:
+        sched = scheduler
+
+    if testing:
+        check_recorder_state_job = sched.add_job(async_cron_recorder_checker.check_object_state, 'interval', seconds=40,
+                                                 id="check_recorder_state_job")
+
+    else:
+        check_recorder_state_job = sched.add_job(async_cron_recorder_checker.check_object_state, 'interval', minutes=2,
+                                                 id="check_recorder_state_job")
+
+    """
+    Job regularly sending the state to "frontend recorders" through websocket
+    """
+    send_update_state_to_recorder_job = sched.add_job(
+        lambda: send_state_update_to_recorders(async_cron_recorder_checker.get_current_state()), 'interval', minutes=1,
+        id="send_update_state_to_recorder_job")
+
+    return [check_recorder_state_job, send_update_state_to_recorder_job]
+
+
+def signal_handler(sig, frame):
+    print('You pressed Ctrl+C -> shutting down scheduler!')
+    if scheduler is not None:
+        scheduler.shutdown()
+    sys.exit(0)
+
+
+if __name__ == '__main__':
+    # check_for_ingestibles_and_ingest()
+    # remove_obsolete_media_files_objects()
+    stream_handler = logging.StreamHandler()
+    stream_handler.setFormatter(
+        logging.Formatter('[%(asctime)s] {%(threadName)s} %(levelname)s in %(module)s, line %(lineno)d: %(message)s'))
+    cron_logger.addHandler(stream_handler)
+    cron_logger.setLevel(logging.INFO)
+
+    signal.signal(signal.SIGINT, signal_handler)
+    get_default_scheduler()
+    add_default_jobs(testing=True)
+    cron_logger.info("Starting internal scheduler")
+    scheduler.start()
+
+    c = 0
+    while c < 10:
+        sleep_time = random.randint(10, 20)
+        cron_logger.info("Sleeping for {}s".format(sleep_time))
+        time.sleep(sleep_time)
+        recorder_id = random.randint(0, 15)
+        cron_logger.info("Using recorder id {}".format(recorder_id))
+        async_cron_recorder_checker.add_object_to_state_check(recorder_id)
+        async_cron_recorder_checker.add_object_to_state_check(recorder_id + 1)
+        pprint(async_cron_recorder_checker.get_current_state())
+
+    while True:
+        user_in = input("Type >exit< to quit.")
+        if user_in == "exit" or user_in == ">exit<":
+            break
+
+    scheduler.shutdown()
--- a/backend/cron/cron_state_checker.py
+++ b/backend/cron/cron_state_checker.py
@@ -0,0 +1,165 @@
+# -*- coding: utf-8 -*-
+import copy
+import datetime
+import logging
+from multiprocessing.context import TimeoutError
+from multiprocessing.pool import ThreadPool
+from pprint import pprint
+from threading import Lock
+from typing import Union, Callable, TypeVar, Generic, Set, List
+
+from backend.models import Recorder
+from backend.tools.recorder_state_checker import check_capture_agent_state, ping_capture_agent
+
+logger = logging.getLogger("lrc.cron.recorder_state")
+
+recorder_jobs_lock = Lock()
+recorder_jobs = set()
+
+NUM_THREADS = 8
+
+T = TypeVar('T')
+
+
+class StateChecker(Generic[T]):
+    """
+    This class is designed generically to regularly check the state of objects with given function(s).
+    The determined state is stored "locally" in the state checker object and NOT reflected back to the checked objects!
+    It can be retrieved by calling get_current_state.
+    """
+
+    def __init__(self, state_checker_func: Union[Callable, List[Callable]], type_to_check: T, type_name=None,
+                 threads=NUM_THREADS):
+        self.num_threads = threads
+        self.lock = Lock()
+        self.jobs: Set[T] = set()
+        self.checker_func = state_checker_func
+        self.checker_type = type_to_check
+        self.update_state_lock = Lock()
+        self.state_results = {}
+        self.type_name = type_name if type_name is not None else self.checker_type.__name__
+
+    def add_object_to_state_check(self, object_to_check: Union[int, T]):
+        if isinstance(object_to_check, int):
+            if not hasattr(self.checker_type, 'get_by_identifier'):
+                logger.error(
+                    'Can\'t add object to state check, as >get_by_identifier< not defined on checker_type ({})!'.format(
+                        str(self.checker_type)))
+                return
+            object_to_check = self.checker_type.get_by_identifier(object_to_check)
+        if object_to_check is None:
+            logger.warning(
+                "Could not add object ({}) to state check, as specified >id ({})<  could not be found / object is None".format(
+                    self.type_name, object_to_check))
+            return
+        with self.lock:
+            if hasattr(object_to_check, 'name'):
+                name = object_to_check.name
+            else:
+                name = str(object_to_check)
+            if any([j.id == object_to_check.id for j in self.jobs]):
+                logger.info(
+                    "Not adding {} ({}) ({}) to state check (already in job list)".format(object_to_check.id, name,
+                                                                                          self.type_name))
+            else:
+                logger.debug("Adding {} to object ({}) to state check".format(self.type_name, name))
+                self.jobs.add(object_to_check)
+
+    def remove_recorder_from_state_check(self, object_to_check: Union[int, T]):
+        if isinstance(object_to_check, int):
+            object_to_check = self.checker_type.get_by_identifier(object_to_check)
+        if object_to_check is None:
+            logger.warning(
+                "Could not remove object ({}) from state check, as specified id could not be found / object is None".format(
+                    self.type_name))
+            return
+        self.lock.acquire()
+        if hasattr(object_to_check, 'name'):
+            name = object_to_check.name
+        else:
+            name = str(object_to_check)
+        logger.debug("Removing {} from object ({}) to state check".format(self.type_name, name))
+        self.jobs.remove(object_to_check)
+        self.lock.release()
+
+    def execute_checker_func(self, func, jobs: List[T], object_states: dict) -> dict:
+        with ThreadPool(self.num_threads) as pool:
+            results = [pool.apply_async(func, (job,)) for job in jobs]
+            try:
+                state_results = [res.get(timeout=12) for res in results]
+                for r in state_results:
+                    if r[0]:  # ok :)
+                        if object_states[r[2]].get('msg', "") == "unknown state!":
+                            del object_states[r[2]]['msg']
+                            ok = True
+                        else:
+                            ok = object_states[r[2]].get('state_ok', False),
+                        object_states[r[2]] = {
+                            'id': object_states[r[2]].get('id', None),
+                            'msg': ", ".join([s for s in [object_states[r[2]].get('msg', None), r[1]] if s]),
+                            'state_ok': ok}
+                    else:
+                        object_states[r[2]] = {'id': object_states[r[2]].get('id', None),
+                                               'msg': r[1],
+                                               'state_ok': False}
+            except TimeoutError as e:
+                logger.error("Timeout while performing state check func! {}".format(e))
+
+        return object_states
+
+    def check_object_state(self) -> dict:
+        logger.info("checking object ({}) state...".format(self.type_name))
+        self.lock.acquire()
+        jobs = list(self.jobs)
+        self.lock.release()
+
+        if len(jobs) <= 0:
+            logger.info("No objects ({}) to check... returning".format(self.type_name))
+            return {}
+        logger.info("checking state of {} recorders".format(len(jobs)))
+
+        object_states = {j.name: {'id': j.id, 'state_ok': False, 'msg': 'unknown state!'} for j in jobs}
+
+        if isinstance(self.checker_func, list):
+            for c_f in self.checker_func:
+                self.execute_checker_func(c_f, jobs, object_states)
+        else:
+            self.execute_checker_func(self.checker_func, jobs, object_states)
+
+        self.update_state_dict(object_states)
+
+        return object_states
+
+    def update_state_dict(self, object_states: dict):
+        self.update_state_lock.acquire()
+        for o_s in object_states.keys():
+            if o_s in self.state_results:
+                # update existing state
+                self.state_results[o_s] = {**object_states[o_s],
+                    'time_stamp': datetime.datetime.now(datetime.timezone.utc).strftime(
+                        "%d.%m.%Y - %H:%M:%S %Z"),
+                    'previous': {'state_ok': self.state_results[o_s]['state_ok'],
+                                 'msg': self.state_results[o_s].get('msg', None),
+                                 'time_stamp': self.state_results[o_s].get('time_stamp', None)}}
+            else:
+                self.state_results[o_s] = object_states[o_s]
+
+        self.update_state_lock.release()
+
+    def get_current_state(self):
+        with self.update_state_lock:
+            return copy.deepcopy(self.state_results)
+
+    def get_current_state_for_recorder_name(self, recorder_name: str):
+        return self.get_current_state().get(recorder_name, None)
+
+    def get_current_state_for_recorder_id(self, recorder_id: int):
+        states = self.get_current_state()
+        for key in states:
+            state = states[key]
+            if state.get('id', None) == recorder_id:  # found!
+                return state
+        return None
+
+
+async_cron_recorder_checker = StateChecker([check_capture_agent_state, ping_capture_agent], Recorder)
--- a/backend/manage.py
+++ b/backend/manage.py
@@ -0,0 +1,75 @@
+#!/usr/bin/env python
+import os, sys
+sys.path.append(os.path.join(os.path.dirname(__file__), os.path.pardir))
+import os
+import unittest
+import coverage
+
+
+
+from flask_script import Manager
+from flask_migrate import Migrate, MigrateCommand
+
+from backend import app, db
+
+COV = coverage.coverage(
+    branch=True,
+    include='app/*',
+    omit=[
+        'app/tests/*',
+        'app/server/config.py',
+        'app/server/*/__init__.py'
+    ]
+)
+COV.start()
+
+migrate = Migrate(app, db)
+manager = Manager(app)
+
+# migrations
+manager.add_command('db', MigrateCommand)
+
+
+@manager.command
+def test():
+    """Runs the unit tests without test coverage."""
+    tests = unittest.TestLoader().discover('tests', pattern='test*.py')
+    result = unittest.TextTestRunner(verbosity=2).run(tests)
+    if result.wasSuccessful():
+        return 0
+    return 1
+
+
+@manager.command
+def cov():
+    """Runs the unit tests with coverage."""
+    tests = unittest.TestLoader().discover('app/tests')
+    result = unittest.TextTestRunner(verbosity=2).run(tests)
+    if result.wasSuccessful():
+        COV.stop()
+        COV.save()
+        print('Coverage Summary:')
+        COV.report()
+        basedir = os.path.abspath(os.path.dirname(__file__))
+        covdir = os.path.join(basedir, 'tmp/coverage')
+        COV.html_report(directory=covdir)
+        print('HTML version: file://%s/index.html' % covdir)
+        COV.erase()
+        return 0
+    return 1
+
+
+@manager.command
+def create_db():
+    """Creates the db tables."""
+    db.create_all()
+
+
+@manager.command
+def drop_db():
+    """Drops the db tables."""
+    db.drop_all()
+
+
+if __name__ == '__main__':
+    manager.run()
--- a/backend/migrations/README
+++ b/backend/migrations/README
@@ -0,0 +1 @@
+Generic single-database configuration.
--- a/backend/migrations/alembic.ini
+++ b/backend/migrations/alembic.ini
@@ -0,0 +1,45 @@
+# A generic, single database configuration.
+
+[alembic]
+# template used to generate migration files
+# file_template = %%(rev)s_%%(slug)s
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+
+# Logging configuration
+[loggers]
+keys = root,sqlalchemy,alembic
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S
--- a/backend/migrations/env.py
+++ b/backend/migrations/env.py
@@ -0,0 +1,95 @@
+from __future__ import with_statement
+
+import logging
+from logging.config import fileConfig
+
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+
+from alembic import context
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+fileConfig(config.config_file_name)
+logger = logging.getLogger('alembic.env')
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+from flask import current_app
+config.set_main_option('sqlalchemy.url',
+                       current_app.config.get('SQLALCHEMY_DATABASE_URI'))
+target_metadata = current_app.extensions['migrate'].db.metadata
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def run_migrations_offline():
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url, target_metadata=target_metadata, literal_binds=True
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online():
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+
+    # this callback is used to prevent an auto-migration from being generated
+    # when there are no changes to the schema
+    # reference: http://alembic.zzzcomputing.com/en/latest/cookbook.html
+    def process_revision_directives(context, revision, directives):
+        if getattr(config.cmd_opts, 'autogenerate', False):
+            script = directives[0]
+            if script.upgrade_ops.is_empty():
+                directives[:] = []
+                logger.info('No changes in schema detected.')
+
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section),
+        prefix='sqlalchemy.',
+        poolclass=pool.NullPool,
+    )
+
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection,
+            target_metadata=target_metadata,
+            process_revision_directives=process_revision_directives,
+            **current_app.extensions['migrate'].configure_args
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()
--- a/backend/migrations/script.py.mako
+++ b/backend/migrations/script.py.mako
@@ -0,0 +1,24 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision = ${repr(up_revision)}
+down_revision = ${repr(down_revision)}
+branch_labels = ${repr(branch_labels)}
+depends_on = ${repr(depends_on)}
+
+
+def upgrade():
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade():
+    ${downgrades if downgrades else "pass"}
--- a/backend/migrations/versions/b154e49921e0_.py
+++ b/backend/migrations/versions/b154e49921e0_.py
@@ -0,0 +1,136 @@
+"""empty message
+
+Revision ID: b154e49921e0
+Revises: 
+Create Date: 2019-04-11 14:44:25.836132
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'b154e49921e0'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('blacklist_tokens',
+    sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+    sa.Column('token', sa.String(length=500), nullable=False),
+    sa.Column('blacklisted_on', sa.DateTime(), nullable=False),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('token')
+    )
+    op.create_table('example_data_item',
+    sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+    sa.Column('mac', sa.String(length=32), nullable=False),
+    sa.Column('uuid', sa.String(length=36), nullable=False),
+    sa.Column('some_string_value', sa.String(), nullable=True),
+    sa.Column('name', sa.String(length=128), nullable=False),
+    sa.Column('description', sa.String(length=4096), nullable=True),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_example_data_item_mac'), 'example_data_item', ['mac'], unique=True)
+    op.create_index(op.f('ix_example_data_item_name'), 'example_data_item', ['name'], unique=False)
+    op.create_index(op.f('ix_example_data_item_some_string_value'), 'example_data_item', ['some_string_value'], unique=False)
+    op.create_index(op.f('ix_example_data_item_uuid'), 'example_data_item', ['uuid'], unique=True)
+    op.create_table('group',
+    sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+    sa.Column('name', sa.Unicode(length=63), nullable=False),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('name')
+    )
+    op.create_table('permission',
+    sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+    sa.Column('name', sa.Unicode(length=63), nullable=False),
+    sa.Column('description', sa.Unicode(length=255), nullable=True),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('name')
+    )
+    op.create_table('group_permission',
+    sa.Column('group_id', sa.Integer(), nullable=False),
+    sa.Column('permission_id', sa.Integer(), nullable=False),
+    sa.ForeignKeyConstraint(['group_id'], ['group.id'], onupdate='CASCADE', ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['permission_id'], ['permission.id'], onupdate='CASCADE', ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('group_id', 'permission_id')
+    )
+    op.create_table('user',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('social_id', sa.Unicode(length=63), nullable=True),
+    sa.Column('nickname', sa.Unicode(length=63), nullable=True),
+    sa.Column('first_name', sa.Unicode(length=63), nullable=True),
+    sa.Column('last_name', sa.Unicode(length=63), nullable=True),
+    sa.Column('email', sa.String(length=120), nullable=False),
+    sa.Column('lang', sa.Unicode(length=32), nullable=True),
+    sa.Column('timezone', sa.Unicode(length=63), nullable=True),
+    sa.Column('example_data_item_id', sa.Integer(), nullable=True),
+    sa.Column('about_me', sa.Unicode(length=255), nullable=True),
+    sa.Column('role', sa.Unicode(length=63), nullable=True),
+    sa.Column('password', sa.String(length=255), nullable=True),
+    sa.Column('registered_on', sa.DateTime(), nullable=False),
+    sa.Column('external_user', sa.Boolean(), nullable=True),
+    sa.Column('last_seen', sa.DateTime(), nullable=True),
+    sa.Column('jwt_exp_delta_seconds', sa.Integer(), nullable=True),
+    sa.ForeignKeyConstraint(['example_data_item_id'], ['example_data_item.id'], ),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('social_id')
+    )
+    op.create_index(op.f('ix_user_email'), 'user', ['email'], unique=True)
+    op.create_index(op.f('ix_user_first_name'), 'user', ['first_name'], unique=False)
+    op.create_index(op.f('ix_user_last_name'), 'user', ['last_name'], unique=False)
+    op.create_index(op.f('ix_user_nickname'), 'user', ['nickname'], unique=True)
+    op.create_table('acquaintances',
+    sa.Column('me_id', sa.Integer(), nullable=True),
+    sa.Column('acquaintance_id', sa.Integer(), nullable=True),
+    sa.ForeignKeyConstraint(['acquaintance_id'], ['user.id'], ),
+    sa.ForeignKeyConstraint(['me_id'], ['user.id'], )
+    )
+    op.create_table('followers',
+    sa.Column('follower_id', sa.Integer(), nullable=True),
+    sa.Column('followed_id', sa.Integer(), nullable=True),
+    sa.ForeignKeyConstraint(['followed_id'], ['user.id'], ),
+    sa.ForeignKeyConstraint(['follower_id'], ['user.id'], )
+    )
+    op.create_table('post',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('body', sa.String(length=140), nullable=True),
+    sa.Column('timestamp', sa.DateTime(), nullable=True),
+    sa.Column('user_id', sa.Integer(), nullable=True),
+    sa.ForeignKeyConstraint(['user_id'], ['user.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('user_group',
+    sa.Column('user_id', sa.Integer(), nullable=False),
+    sa.Column('group_id', sa.Integer(), nullable=False),
+    sa.ForeignKeyConstraint(['group_id'], ['group.id'], onupdate='CASCADE', ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['user_id'], ['user.id'], onupdate='CASCADE', ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('user_id', 'group_id')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('user_group')
+    op.drop_table('post')
+    op.drop_table('followers')
+    op.drop_table('acquaintances')
+    op.drop_index(op.f('ix_user_nickname'), table_name='user')
+    op.drop_index(op.f('ix_user_last_name'), table_name='user')
+    op.drop_index(op.f('ix_user_first_name'), table_name='user')
+    op.drop_index(op.f('ix_user_email'), table_name='user')
+    op.drop_table('user')
+    op.drop_table('group_permission')
+    op.drop_table('permission')
+    op.drop_table('group')
+    op.drop_index(op.f('ix_example_data_item_uuid'), table_name='example_data_item')
+    op.drop_index(op.f('ix_example_data_item_some_string_value'), table_name='example_data_item')
+    op.drop_index(op.f('ix_example_data_item_name'), table_name='example_data_item')
+    op.drop_index(op.f('ix_example_data_item_mac'), table_name='example_data_item')
+    op.drop_table('example_data_item')
+    op.drop_table('blacklist_tokens')
+    # ### end Alembic commands ###
--- a/backend/models/init.py
+++ b/backend/models/init.py
@@ -0,0 +1,10 @@
+"""
+Import all models...
+"""
+from backend.models.access_control_model import *
+from backend.models.example_model import *
+from backend.models.post_model import *
+from backend.models.recorder_model import *
+from backend.models.room_model import *
+from backend.models.user_model import *
+from backend.models.virtual_command_model import *
--- a/backend/models/access_control_model.py
+++ b/backend/models/access_control_model.py
@@ -0,0 +1,73 @@
+# -*- coding: utf-8 -*-
+"""
+Models for lecture recorder
+"""
+import json
+
+from sqlalchemy import MetaData, CheckConstraint
+from sqlalchemy.exc import IntegrityError
+
+from datetime import datetime, timedelta
+
+from backend import db, app, login_manager
+from backend.tools.scrape_rooms import scrape_rooms
+
+metadata = MetaData()
+
+
+class AccessControlEntry(db.Model):
+    id = db.Column(db.Integer, autoincrement=True, primary_key=True)
+    created_at = db.Column(db.DateTime, nullable=False, default=datetime.utcnow())
+    name = db.Column(db.Unicode(127), unique=False, nullable=False)
+    url = db.Column(db.Unicode(2047), unique=False, nullable=True, default="")
+
+    required_permission_id = db.Column(db.Integer, db.ForeignKey('permission.id'))
+    required_permission = db.relationship('Permission', back_populates='access_control_entry')
+
+    __table_args__ = (
+        CheckConstraint('length(name) > 2',
+                        name='name_min_length'),
+    )
+
+    def __init__(self, **kwargs):
+        super(AccessControlEntry, self).__init__(**kwargs)
+
+    @staticmethod
+    def get_by_name(name):
+        """
+        Find ace by name
+        :param name:
+        :return:
+        """
+        return AccessControlEntry.query.filter(AccessControlEntry.name == name).first()
+
+    @staticmethod
+    def get_all():
+        """
+        Return all ace
+        :return:
+        """
+        return AccessControlEntry.query.all()
+
+    def __str__(self):
+        return self.name
+
+    def to_dict(self):
+        return dict(id=self.id, name=self.name)
+
+    def toJSON(self):
+        return json.dumps(self.to_dict(), default=lambda o: o.__dict__,
+                          sort_keys=True, indent=4)
+
+
+def pre_fill_table():
+    a_es = {"url": "", }
+    access_entries = [AccessControlEntry(name=room['name'], number=room['room_number'],
+                               building_name=room['building_name'], building_number=room['building_number']) for room in
+                          a_es]
+
+    try:
+        db.session.bulk_save_objects(access_entries)
+        db.session.commit()
+    except IntegrityError as e:
+        db.session.rollback()
--- a/backend/models/example_model.py
+++ b/backend/models/example_model.py
--- a/backend/models/initial_recorders.json
+++ b/backend/models/initial_recorders.json
--- a/backend/models/model_base.py
+++ b/backend/models/model_base.py
@@ -0,0 +1,11 @@
+
+class ModelBase:
+    def get(self, attribute_name, default_value=None):
+        if hasattr(self, attribute_name):
+            return getattr(self, attribute_name)
+        elif False:  # a check for properties?
+            pass
+        elif default_value is not None:
+            return default_value
+        else:
+            raise KeyError("{} not found".format(attribute_name))
--- a/backend/models/post_model.py
+++ b/backend/models/post_model.py
--- a/backend/models/recorder_model.py
+++ b/backend/models/recorder_model.py
@@ -0,0 +1,308 @@
+# -*- coding: utf-8 -*-
+"""
+Models for lecture recorder
+"""
+import importlib
+import ipaddress
+import json
+import pkgutil
+import os
+import re
+from typing import Union
+
+from sqlalchemy import MetaData, ForeignKeyConstraint
+from sqlalchemy.exc import IntegrityError
+from sqlalchemy.ext.hybrid import hybrid_property
+from sqlalchemy.orm import validates
+
+from backend import db, app, login_manager, LrcException
+from sqlalchemy import or_
+from datetime import datetime, timedelta
+
+from backend.models.model_base import ModelBase
+from backend.models.virtual_command_model import virtual_command_recorder_command_table, virtual_command_recorder_table
+
+metadata = MetaData()
+
+# This is the association table for the many-to-many relationship between
+# recorders and permissions.
+recorder_permission_table = db.Table('recorder_permission',
+                                     db.Column('recorder_id', db.Integer,
+                                               db.ForeignKey('recorder.id',
+                                                             onupdate="CASCADE",
+                                                             ondelete="CASCADE"),
+                                               primary_key=True),
+                                     db.Column('permission_id', db.Integer,
+                                               db.ForeignKey('permission.id',
+                                                             onupdate="CASCADE",
+                                                             ondelete="CASCADE"),
+                                               primary_key=True),
+                                     extend_existing=True)
+
+# This is the association table for the many-to-many relationship between
+# recorders and recorderCommands and permissions.
+recorder_rec_commands_permission_table = db.Table('recorder_rec_command_permission',
+                                                  db.Column('recorder_id', db.Integer,
+                                                            db.ForeignKey('recorder.id',
+                                                                          onupdate="CASCADE",
+                                                                          ondelete="CASCADE"),
+                                                            primary_key=True),
+                                                  db.Column('recorder_command_id', db.Integer,
+                                                            db.ForeignKey('recorder_command.id',
+                                                                          onupdate="CASCADE",
+                                                                          ondelete="CASCADE"),
+                                                            primary_key=True),
+                                                  db.Column('permission_id', db.Integer,
+                                                            db.ForeignKey('permission.id',
+                                                                          onupdate="CASCADE",
+                                                                          ondelete="CASCADE"),
+                                                            primary_key=True),
+                                                  extend_existing=True)
+
+
+class RecorderModel(db.Model, ModelBase):
+    __table_args__ = {'extend_existing': True}
+    id = db.Column(db.Integer, autoincrement=True, primary_key=True)
+    created_at = db.Column(db.DateTime, nullable=False, default=datetime.utcnow())
+    last_time_modified = db.Column(db.DateTime, nullable=True, default=None)
+    record_adapter_id = db.Column(db.Unicode(63), unique=True, nullable=False)
+    model_name = db.Column(db.Unicode(63), unique=True, nullable=False)
+    notes = db.Column(db.Unicode(255), unique=False, nullable=True, default=None)
+    recorder_commands = db.relationship('RecorderCommand', back_populates='recorder_model')
+    recorders = db.relationship('Recorder', back_populates='recorder_model')
+    checksum = db.Column(db.String(63), unique=True,
+                         nullable=False)  # checksum of the recorder commands! (see: model_updater.py)
+    last_checksum_change = db.Column(db.DateTime, nullable=True, default=None)
+    _requires_user = db.Column(db.Integer, default=False, name='requires_user')
+    _requires_password = db.Column(db.Integer, default=True, name='requires_password')
+
+    @staticmethod
+    def get_all():
+        return RecorderModel.query.all()
+
+    @staticmethod
+    def get_by_id(id):
+        return RecorderModel.query.filter(RecorderModel.id == id).first()
+
+    @staticmethod
+    def get_by_name(name):
+        return RecorderModel.query.filter(RecorderModel.model_name == name).first()
+
+    @staticmethod
+    def get_by_adapter_id(name):
+        return RecorderModel.query.filter(RecorderModel.record_adapter_id == name).first()
+
+    @staticmethod
+    def get_where_adapter_id_contains(adapter_id):
+        return RecorderModel.query.filter(RecorderModel.record_adapter_id.contains(adapter_id)).first()
+
+    @staticmethod
+    def get_by_checksum(md5_sum):
+        return RecorderModel.query.filter(RecorderModel.checksum == md5_sum).first()
+
+    @hybrid_property
+    def requires_username(self):
+        return self._requires_user > 0
+
+    @requires_username.setter
+    def requires_username(self, val: bool):
+        self._requires_user = 1 if val else 0
+
+    @hybrid_property
+    def requires_password(self):
+        return self._requires_password > 0
+
+    @requires_password.setter
+    def requires_password(self, val: bool):
+        self._requires_password = 1 if val else 0
+
+    def __str__(self):
+        return self.model_name + " (record adapter: {})".format(self.record_adapter_id)
+
+
+class Recorder(db.Model, ModelBase):
+    __table_args__ = {'extend_existing': True}
+    id = db.Column(db.Integer, autoincrement=True, primary_key=True)
+    created_at = db.Column(db.DateTime, nullable=False, default=datetime.utcnow())
+    last_time_modified = db.Column(db.DateTime, nullable=False, default=datetime.utcnow())
+    name = db.Column(db.Unicode(63), unique=True, nullable=False)
+    model_name = db.Column(db.Unicode(63), unique=False, nullable=False)
+    serial_number = db.Column(db.Unicode(63), unique=True, nullable=True)
+    locked = db.Column(db.Boolean, default=False)  # no modifications allowed
+    lock_message = db.Column(db.String, nullable=True, default=None)
+    offline = db.Column(db.Boolean, default=False)  # maintenance, etc.
+    description = db.Column(db.Unicode(255), unique=False, nullable=True, default="")
+    _mac = db.Column(db.String(17), unique=True, nullable=True)
+    _ip = db.Column(db.String(15), unique=True, nullable=True, default=None)
+    _ip6 = db.Column(db.String(46), unique=True, nullable=True, default=None)
+    network_name = db.Column(db.String(127), unique=True, nullable=True, default=None)
+    telnet_port = db.Column(db.Integer, unique=False, nullable=False, default=23)
+    ssh_port = db.Column(db.Integer, unique=False, nullable=False, default=22)
+    username = db.Column(db.String, nullable=True, default=None)
+    password = db.Column(db.String, nullable=True, default=None)
+    _configured_options_json_string = db.Column(db.UnicodeText, default='')
+    _additional_notes_json_string = db.Column(db.UnicodeText, default='')
+    additional_camera_connected = db.Column(db.Boolean, default=False)
+    firmware_version = db.Column(db.String, nullable=True, default=None)
+    archive_stream1 = db.Column(db.String, nullable=True, default=None)
+    archive_stream2 = db.Column(db.String, nullable=True, default=None)
+    confidence_stream = db.Column(db.String, nullable=True, default=None)
+    room_id = db.Column(db.Integer, db.ForeignKey('room.id'))
+    room = db.relationship('Room', uselist=False, back_populates='recorder')  # one-to-one relation (uselist=False)
+    recorder_model_id = db.Column(db.Integer, db.ForeignKey('recorder_model.id'))
+    recorder_model = db.relationship('RecorderModel', back_populates='recorders')
+    virtual_commands = db.relationship('VirtualCommand', secondary=virtual_command_recorder_table,
+                                       back_populates='recorders')
+
+    required_read_permissions = db.relationship('Permission', secondary=recorder_permission_table)
+    required_write_permissions = db.relationship('Permission', secondary=recorder_permission_table)
+
+    def __init__(self, **kwargs):
+        super(Recorder, self).__init__(**kwargs)
+
+    @staticmethod
+    def get_by_name(name):
+        return Recorder.query.filter(Recorder.name == name).first()
+
+    @staticmethod
+    def get_by_identifier(identifier):
+        return Recorder.query.filter(Recorder.id == identifier).first()
+
+    @staticmethod
+    def get_by_mac(mac: str):
+        if mac is None or mac == '':
+            return None
+        mac = mac.replace('-', ':').lower()
+        return Recorder.query.filter(Recorder._mac == mac).first()
+
+    @staticmethod
+    def get_all():
+        return Recorder.query.all()
+
+    @validates('name')
+    def validate_name(self, key, value):
+        assert len(value) > 2
+        return value
+
+    @hybrid_property
+    def configured_options(self) -> list:
+        return json.loads(self._configured_options_json_string)
+
+    @configured_options.setter
+    def configured_options(self, value: list):
+        self._configured_options_json_string = json.dumps(value)
+
+    def add_configured_option(self, value: str):
+        self._configured_options_json_string = json.dumps(self.configured_options.append(value))
+
+    @hybrid_property
+    def additional_notes(self) -> list:
+        return json.loads(self._additional_notes_json_string)
+
+    @additional_notes.setter
+    def additional_notes(self, value: list):
+        self._additional_notes_json_string = json.dumps(value)
+
+    def add_additional_notes(self, value: str):
+        self._additional_notes_json_string = json.dumps(self._additional_notes_json_string.append(value))
+
+    @hybrid_property
+    def mac(self) -> str:
+        return self._mac.upper()
+
+    @mac.setter
+    def mac(self, value: str):
+        if value is None or value == '':
+            return
+        if re.match("[0-9a-f]{2}([-:]?)[0-9a-f]{2}(\\1[0-9a-f]{2}){4}$", value.lower()):
+            self._mac = value.replace('-', ':').lower()
+        else:
+            raise LrcException("'{}' is not a valid MAC Address!".format(value))
+
+    @hybrid_property
+    def ip(self) -> str:
+        return self._ip
+
+    @ip.setter
+    def ip(self, value: str):
+        try:
+            ipaddress.IPv4Interface(value)
+            self._ip = value
+        except (ipaddress.AddressValueError, ipaddress.NetmaskValueError):
+            raise LrcException("'{}' is not a valid IPv4 Address!".format(value))
+
+    @hybrid_property
+    def ip6(self) -> str:
+        return self._ip6
+
+    @ip6.setter
+    def ip6(self, value: str):
+        try:
+            ipaddress.IPv6Interface(value)
+            self._ip6 = value
+        except (ipaddress.AddressValueError, ipaddress.NetmaskValueError):
+            raise LrcException("'{}' is not a valid IPv6 Address!".format(value))
+
+    # handle bad ip
+
+    def __str__(self):
+        return self.name
+
+    def to_dict(self):
+        return dict(id=self.id, name=self.name)
+
+    def toJSON(self):
+        return json.dumps(self.to_dict(), default=lambda o: o.__dict__,
+                          sort_keys=True, indent=4)
+
+
+class RecorderCommandPermission(db.Model, ModelBase):
+    __table_args__ = {'extend_existing': True}
+    id = db.Column(db.Integer, autoincrement=True, primary_key=True)
+    recorder = db.relationship('Recorder')
+    recorder_id = db.Column(db.Integer, db.ForeignKey('recorder.id'))
+    recorder_command = db.relationship('RecorderCommand')
+    recorder_command_id = db.Column(db.Integer, db.ForeignKey('recorder_command.id'))
+    permission = db.relationship('Permission')
+    permission_id = db.Column(db.Integer, db.ForeignKey('permission.id'))
+
+
+class RecorderCommand(db.Model, ModelBase):
+    __table_args__ = {'extend_existing': True}
+    id = db.Column(db.Integer, autoincrement=True, primary_key=True)
+    created_at = db.Column(db.DateTime, nullable=False, default=datetime.utcnow())
+    last_time_modified = db.Column(db.DateTime, nullable=True, default=datetime.utcnow())
+    name = db.Column(db.Unicode(63), unique=True, nullable=False)
+    alternative_name = db.Column(db.Unicode(63), unique=True, nullable=True, default=None)
+    disabled = db.Column(db.Boolean, default=False)
+    description = db.Column(db.Unicode(511), nullable=True, default=None)
+    parameters_string = db.Column(db.String(2047), nullable=True)
+    recorder_model = db.relationship('RecorderModel', back_populates='recorder_commands')
+    recorder_model_id = db.Column(db.Integer, db.ForeignKey('recorder_model.id'))
+    virtual_commands = db.relationship('VirtualCommand', secondary=virtual_command_recorder_command_table,
+                                       back_populates='recorder_commands')
+
+    required_show_permissions = db.relationship('RecorderCommandPermission')
+    required_execute_permissions = db.relationship('RecorderCommandPermission')
+
+    @staticmethod
+    def get_all():
+        return RecorderCommand.query.all()
+
+    @staticmethod
+    def get_by_identifier(identifier):
+        return RecorderCommand.query.filter(RecorderCommand.id == identifier).first()
+
+    @property
+    def parameters(self) -> Union[dict, None]:
+        if self.parameters_string is None:
+            return None
+        return json.loads(self.parameters_string)
+
+    @parameters.setter
+    def parameters(self, parameters_dict: dict):
+        self.parameters_string = json.dumps(parameters_dict)
+
+
+if __name__ == '__main__':
+    Recorder(name="RecTest")
--- a/backend/models/room_model.py
+++ b/backend/models/room_model.py
@@ -0,0 +1,92 @@
+# -*- coding: utf-8 -*-
+"""
+Models for lecture recorder
+"""
+import json
+import logging
+
+from sqlalchemy import MetaData, CheckConstraint
+from sqlalchemy.exc import IntegrityError
+
+from datetime import datetime, timedelta
+
+from backend import db, app, login_manager
+from backend.tools.scrape_rooms import scrape_rooms
+
+logger = logging.getLogger("lrc."+__name__)
+
+metadata = MetaData()
+
+
+class Room(db.Model):
+    id = db.Column(db.Integer, autoincrement=True, primary_key=True)
+    created_at = db.Column(db.DateTime, nullable=False, default=datetime.utcnow())
+    name = db.Column(db.Unicode(127), unique=False, nullable=False)
+    alternate_name = db.Column(db.Unicode(127), unique=False, nullable=True, default=None)
+    comment = db.Column(db.Unicode(2047), unique=False, nullable=True, default="")
+    number = db.Column(db.Unicode(63), unique=False, nullable=True)
+    building_name = db.Column(db.Unicode(63), unique=False, nullable=True)
+    building_number = db.Column(db.Unicode(63), unique=False, nullable=True)
+
+    recorder = db.relationship('Recorder', uselist=False, back_populates='room')  # one-to-one relation (uselist=False)
+
+    __table_args__ = (
+        CheckConstraint('length(name) > 2',
+                        name='name_min_length'),
+    )
+
+    def __init__(self, **kwargs):
+        super(Room, self).__init__(**kwargs)
+
+    @staticmethod
+    def get_by_name(name):
+        """
+        Find group by name
+        :param name:
+        :return:
+        """
+        return Room.query.filter(Room.name == name).first()
+
+    @staticmethod
+    def get_by_building_number(building_number):
+        """
+        Find group by name
+        :param name:
+        :return:
+        """
+        return Room.query.filter(Room.building_number == building_number)
+
+    @staticmethod
+    def get_all():
+        """
+        Return all rooms
+        :return:
+        """
+        return Room.query.all()
+
+    def __str__(self):
+        return self.name
+
+    def to_dict(self):
+        return dict(id=self.id, name=self.name)
+
+    def toJSON(self):
+        return json.dumps(self.to_dict(), default=lambda o: o.__dict__,
+                          sort_keys=True, indent=4)
+
+
+def pre_fill_table():
+    rooms = scrape_rooms()
+    logger.debug("tada")
+    logger.debug("got {} rooms".format(len(rooms)))
+    db_rooms = [Room(name=room['name'], number=room['room_number'],
+                               building_name=room['building_name'], building_number=room['building_number']) for room in
+                          rooms]
+
+    try:
+        db.session.bulk_save_objects(db_rooms)
+        db.session.commit()
+        logger.debug("rooms commited to DB!")
+    except IntegrityError as e:
+        logger.error("Could not add rooms! ({})".format(e))
+        db.session.rollback()
--- a/backend/models/user_model.py
+++ b/backend/models/user_model.py
@@ -0,0 +1,543 @@
+# -*- coding: utf-8 -*-
+"""
+Example user model and related models
+"""
+import json
+
+from sqlalchemy.orm import relation
+from sqlalchemy import MetaData
+
+from backend import db, app, login_manager
+from backend.config import Config
+from backend.models.post_model import Post
+from backend.models.example_model import ExampleDataItem
+import re
+import jwt
+from flask_login import UserMixin
+from sqlalchemy import or_, event
+from datetime import datetime, timedelta
+from passlib.hash import sha256_crypt
+from hashlib import md5
+
+metadata = MetaData()
+
+followers = db.Table('followers',
+                     db.Column('follower_id', db.Integer, db.ForeignKey('user.id')),
+                     db.Column('followed_id', db.Integer, db.ForeignKey('user.id'))
+                     )
+
+acquaintances = db.Table('acquaintances',
+                         db.Column('me_id', db.Integer, db.ForeignKey('user.id')),
+                         db.Column('acquaintance_id', db.Integer, db.ForeignKey('user.id'))
+                         )
+
+user_favorite_recorders_table = db.Table('user_favorite_recorders',
+                                         db.Column('user_id', db.Integer,
+                                                   db.ForeignKey('user.id',
+                                                                 onupdate="CASCADE",
+                                                                 ondelete="CASCADE"),
+                                                   primary_key=True),
+                                         db.Column('recorder_id', db.Integer,
+                                                   db.ForeignKey('recorder.id',
+                                                                 onupdate="CASCADE",
+                                                                 ondelete="CASCADE"),
+                                                   primary_key=True))
+
+# This is the association table for the many-to-many relationship between
+# groups and members - this is, the memberships.
+user_group_table = db.Table('user_group',
+                            db.Column('user_id', db.Integer,
+                                      db.ForeignKey('user.id',
+                                                    onupdate="CASCADE",
+                                                    ondelete="CASCADE"),
+                                      primary_key=True),
+                            db.Column('group_id', db.Integer,
+                                      db.ForeignKey('group.id',
+                                                    onupdate="CASCADE",
+                                                    ondelete="CASCADE"),
+                                      primary_key=True))
+
+# This is the association table for the many-to-many relationship between
+# groups and permissions.
+group_permission_table = db.Table('group_permission',
+                                  db.Column('group_id', db.Integer,
+                                            db.ForeignKey('group.id',
+                                                          onupdate="CASCADE",
+                                                          ondelete="CASCADE"),
+                                            primary_key=True),
+                                  db.Column('permission_id', db.Integer,
+                                            db.ForeignKey('permission.id',
+                                                          onupdate="CASCADE",
+                                                          ondelete="CASCADE"),
+                                            primary_key=True))
+
+# This is the association table for the many-to-many relationship between
+# users and permissions.
+user_permission_table = db.Table('user_permission',
+                                  db.Column('user_id', db.Integer,
+                                            db.ForeignKey('user.id',
+                                                          onupdate="CASCADE",
+                                                          ondelete="CASCADE"),
+                                            primary_key=True),
+                                  db.Column('permission_id', db.Integer,
+                                            db.ForeignKey('permission.id',
+                                                          onupdate="CASCADE",
+                                                          ondelete="CASCADE"),
+                                            primary_key=True))
+
+
+class User(UserMixin, db.Model):
+    """
+    Example user model representation.
+    """
+    id = db.Column(db.Integer, primary_key=True)
+    social_id = db.Column(db.Unicode(63), nullable=True, unique=True)
+    nickname = db.Column(db.Unicode(63), index=True, unique=True)
+    first_name = db.Column(db.Unicode(63), index=True, nullable=True)
+    last_name = db.Column(db.Unicode(63), index=True, nullable=True)
+    email = db.Column(db.String(120), nullable=False, index=True, unique=True)
+    lang = db.Column(db.Unicode(32), index=False, unique=False)
+    timezone = db.Column(db.Unicode(63), index=False, unique=False)
+    posts = db.relationship('Post', backref='author', lazy='dynamic')
+    example_data_item = db.relationship('ExampleDataItem', backref='owner')
+    example_data_item_id = db.Column(db.ForeignKey(ExampleDataItem.id))
+    about_me = db.Column(db.Unicode(255))
+    role = db.Column(db.Unicode(63))
+    groups = db.relationship('Group', secondary=user_group_table, back_populates='users')
+    permissions = db.relationship('Permission', secondary=user_permission_table, back_populates='users')
+    password = db.Column(db.String(255), nullable=True)
+    registered_on = db.Column(db.DateTime, nullable=False, default=datetime.utcnow())
+    external_user = db.Column(db.Boolean, default=False)
+    last_seen = db.Column(db.DateTime, default=datetime.utcnow())
+    last_time_modified = db.Column(db.DateTime, default=datetime.utcnow())
+    jwt_exp_delta_seconds = db.Column(db.Integer, nullable=True)
+    acquainted = db.relationship('User',
+                                 secondary=acquaintances,
+                                 primaryjoin=(acquaintances.c.me_id == id),
+                                 secondaryjoin=(acquaintances.c.acquaintance_id == id),
+                                 backref=db.backref('acquaintances', lazy='dynamic'),
+                                 lazy='dynamic')
+    followed = db.relationship('User',
+                               secondary=followers,
+                               primaryjoin=(followers.c.follower_id == id),
+                               secondaryjoin=(followers.c.followed_id == id),
+                               backref=db.backref('followers', lazy='dynamic'),
+                               lazy='dynamic')
+
+    favorite_recorders = db.relationship('Recorder', secondary=user_favorite_recorders_table)
+
+    def __init__(self, **kwargs):
+        super(User, self).__init__(**kwargs)
+        password = kwargs.get("password", None)
+        external_user = kwargs.get("external_user", None)
+        if password is not None:
+            self.password = sha256_crypt.encrypt(password)
+        if external_user is not None:
+            self.external_user = external_user
+
+    @staticmethod
+    @login_manager.user_loader
+    def get_by_identifier(identifier):
+        """
+        Find user by identifier, which might be the nickname or the e-mail address.
+        :param identifier:
+        :return:
+        """
+        return User.query.filter(or_(User.nickname == identifier,
+                                     User.email == identifier,
+                                     User.id == identifier)).first()
+
+    @staticmethod
+    @login_manager.user_loader
+    def get_by_id(identifier):
+        """
+        Find user by ID.
+        :param identifier:
+        :return:
+        """
+        return User.query.filter(User.id == identifier).first()
+
+    @staticmethod
+    def get_all():
+        """
+        Return all users
+        :return:
+        """
+        return User.query.all()
+
+    @staticmethod
+    def make_unique_nickname(nickname):
+        """
+        Add suffix (counter) to nickname in order to get a unique nickname.
+        :param nickname:
+        :return:
+        """
+        if User.query.filter_by(nickname=nickname).first() is None:
+            return nickname
+        version = 2
+        while True:
+            new_nickname = nickname + str(version)
+            if User.query.filter_by(nickname=new_nickname).first() is None:
+                break
+            version += 1
+        return new_nickname
+
+    @staticmethod
+    def make_valid_nickname(nickname):
+        """
+        Replaces certain characters (except a-zA-Z0-9_.) in nickname with blancs.
+        :param nickname:
+        :return:
+        """
+        return re.sub('[^a-zA-Z0-9_.]', '', nickname)
+
+    @classmethod
+    def authenticate(cls, **kwargs):
+        email = kwargs.get('email')
+        password = kwargs.get('password')
+
+        if not email or not password:
+            return None
+
+        user = cls.query.filter_by(email=email).first()
+        if not user or not user.verify_password(password):
+            return None
+
+        return user
+
+    @property
+    def is_authenticated(self):
+        """
+        Returns true if user is authenticated.
+        :return:
+        """
+        # TODO: implement correctly
+        return True
+
+    @property
+    def is_active(self):
+        """
+        Returns true if user is active.
+        :return:
+        """
+        # TODO: implement correctly
+        return True
+
+    @property
+    def is_anonymous(self):
+        """
+        Returns true if user is anonymous.
+        :return:
+        """
+        # TODO: implement correctly
+        return False
+
+    @property
+    def is_read_only(self):
+        """
+        Returns true if user is active.
+        :return:
+        """
+        # TODO: implement correctly
+        return True
+
+    @property
+    def effective_permissions(self):
+        permissions = Config.ROLE_PERMISSION_MAPPINGS.get(self.role, [])
+        for g in self.groups:
+            print(g)
+            for p in g.permissions:
+                print(p)
+                permissions.append(p)
+        return permissions
+
+    @staticmethod
+    def decode_auth_token(auth_token):
+        """
+        Decodes the auth token
+        :param auth_token:
+        :return: integer|string
+        """
+        try:
+            payload = jwt.decode(auth_token, app.config.get('SECRET_KEY'))
+            is_blacklisted_token = BlacklistToken.check_blacklist(auth_token)
+            if is_blacklisted_token:
+                return 'Token blacklisted. Please log in again.'
+            else:
+                return payload['sub']
+        except jwt.ExpiredSignatureError:
+            return 'Signature expired. Please log in again.'
+        except jwt.InvalidTokenError:
+            return 'Invalid token. Please log in again.'
+
+    def encode_auth_token(self):
+        """
+        Generates the Auth Token
+        :return: string
+        """
+        try:
+            payload = {
+                'exp': datetime.utcnow() + timedelta(days=0, hours=3, seconds=5),
+                'iat': datetime.utcnow(),
+                'sub': self.id
+            }
+            return jwt.encode(
+                payload,
+                app.config.get('SECRET_KEY'),
+                algorithm='HS256'
+            )
+        except Exception as e:
+            return e
+
+    def set_password(self, password):
+        """
+        SHA256 encrypts the given password and sets it on the user.
+        :param password:
+        :return:
+        """
+        self.password = sha256_crypt.encrypt(password)
+
+    def verify_password(self, password):
+        """
+        Verifies that the given password matches the SHA256 encrypted password stored on the user.
+        :param password:
+        :return:
+        """
+        if self.password is None:
+            return False
+        return sha256_crypt.verify(password, self.password)
+
+    def get_id(self):
+        """
+        Returns the ID of the user.
+        :return:
+        """
+        try:
+            # noinspection PyUnresolvedReferences
+            return unicode(self.id)  # python 2
+        except NameError:
+            return str(self.id)  # python 3
+
+    def avatar(self, size):
+        """
+        Returns an avatar URL.
+        :param size:
+        :return:
+        """
+        return 'https://s.gravatar.com/avatar/%s?d=mm&s=%d' % (md5(self.email.encode('utf-8')).hexdigest(), size)
+
+    def acquaint(self, user):
+        """
+        Adds an acquaintance to the user object.
+        :param user:
+        :return:
+        """
+        if not self.is_acquainted(user):
+            self.acquainted.append(user)
+            return self
+
+    def unacquaint(self, user):
+        """
+        Removes the user from the list of acquaintances.
+        :param user:
+        :return:
+        """
+        if self.is_acquainted(user):
+            self.acquainted.remove(user)
+            return self
+
+    def is_acquainted(self, user):
+        """
+        Check if the provided user is an acquaintance.
+        :param user:
+        :return:
+        """
+        return self.acquainted.filter(acquaintances.c.acquaintance_id == user.id).count() > 0
+
+    def get_acquaintances(self):
+        """
+        Returns the list of acquaintances.
+        :return:
+        """
+        return User.query.join(acquaintances, (acquaintances.c.acquaintance_id == User.id)).filter(
+            acquaintances.c.me_id == self.id).order_by(User.nickname.desc())
+
+    def shared_example_data_items(self):
+        """
+        Returns a list of the shared data items.
+        :return:
+        """
+        return ExampleDataItem.query.join(acquaintances,
+                                          (acquaintances.c.acquaintance_id == ExampleDataItem.user_id)).filter(
+            acquaintances.c.me_id == self.id).order_by(ExampleDataItem.timestamp.desc())
+
+    def follow(self, user):
+        """
+        Add user to list of followers.
+        :param user:
+        :return:
+        """
+        if not self.is_following(user):
+            self.followed.append(user)
+            return self
+
+    def unfollow(self, user):
+        """
+        Remove user from the list of followers.
+        :param user:
+        :return:
+        """
+        if self.is_following(user):
+            self.followed.remove(user)
+            return self
+
+    def is_following(self, user):
+        """
+        Checks if specified user is a follower.
+        :param user:
+        :return:
+        """
+        return self.followed.filter(followers.c.followed_id == user.id).count() > 0
+
+    def followed_posts(self):
+        """
+        Returns list of followed posts.
+        :return:
+        """
+        return Post.query.join(followers, (followers.c.followed_id == Post.user_id)).filter(
+            followers.c.follower_id == self.id).order_by(Post.timestamp.desc())
+
+    def to_dict(self):
+        # return self.__dict__
+        return dict(id=self.id, email=self.email, groups=[g.to_dict() for g in self.groups])
+
+    def toJSON(self):
+        return json.dumps(self.to_dict(), default=lambda o: o.__dict__,
+                          sort_keys=True, indent=4)
+
+    def __repr__(self):
+        return '<User %r>' % self.email
+
+
+class BlacklistToken(db.Model):
+    """
+    Token Model for storing JWT tokens
+    """
+    __tablename__ = 'blacklist_tokens'
+
+    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
+    token = db.Column(db.String(500), unique=True, nullable=False)
+    blacklisted_on = db.Column(db.DateTime, nullable=False)
+
+    def __init__(self, token):
+        self.token = token
+        self.blacklisted_on = datetime.now()
+
+    def __repr__(self):
+        return '<id: token: {}'.format(self.token)
+
+    @staticmethod
+    def get_by_token(jwt_id):
+        return BlacklistToken.query.filter(BlacklistToken.token == jwt_id).first()
+
+    @staticmethod
+    def check_blacklist(auth_token):
+        """
+        check whether auth token has been blacklisted
+        :param auth_token:
+        :return:
+        """
+        res = BlacklistToken.query.filter_by(token=str(auth_token)).first()
+        if res:
+            return True
+        else:
+            return False
+
+
+class Group(db.Model):
+    id = db.Column(db.Integer, autoincrement=True, primary_key=True)
+    name = db.Column(db.Unicode(63), unique=True, nullable=False)
+    description = db.Column(db.Unicode(255), unique=False, nullable=True, default="")
+    users = db.relationship('User', secondary=user_group_table, back_populates='groups')
+    permissions = db.relationship('Permission', secondary=group_permission_table, back_populates='groups')
+
+    def __init__(self, **kwargs):
+        super(Group, self).__init__(**kwargs)
+
+    @staticmethod
+    def get_by_name(name):
+        """
+        Find group by name
+        :param name:
+        :return:
+        """
+        return Group.query.filter(Group.name == name).first()
+
+    @staticmethod
+    def get_all():
+        """
+        Return all groups
+        :return:
+        """
+        return Group.query.all()
+
+    def __str__(self):
+        return self.name
+
+    def to_dict(self):
+        return dict(id=self.id, name=self.name)
+
+    def toJSON(self):
+        return json.dumps(self.to_dict(), default=lambda o: o.__dict__,
+                          sort_keys=True, indent=4)
+
+
+class Permission(db.Model):
+    """Table containing permissions associated with groups."""
+    id = db.Column(db.Integer, autoincrement=True, primary_key=True)
+    name = db.Column(db.Unicode(63), unique=True, nullable=False)
+    description = db.Column(db.Unicode(511))
+    #read_only = db.Column(db.Boolean, default=False)
+    groups = db.relationship(Group, secondary=group_permission_table,
+                             back_populates='permissions')
+    users = db.relationship(User, secondary=user_permission_table,
+                             back_populates='permissions')
+    access_control_entry = db.relationship('AccessControlEntry', back_populates='required_permission')
+
+
+    @staticmethod
+    def get_by_name(name):
+        """
+        Find permission by name
+        :param name:
+        :return:
+        """
+        return Permission.query.filter(Permission.name == name).first()
+
+    @staticmethod
+    def get_all():
+        """
+        Return all permissions
+        :return:
+        """
+        return Permission.query.all()
+
+@event.listens_for(User.__table__, 'after_create')
+def insert_initial_users(*args, **kwargs):
+    for u in app.config.get("USERS", []):
+        db.session.add(User(**u))
+    db.session.commit()
+
+
+@event.listens_for(Group.__table__, 'after_create')
+def insert_initial_groups(*args, **kwargs):
+    for g in app.config.get("GROUPS", []):
+        db.session.add(Group(**g))
+    db.session.commit()
+
+
+@event.listens_for(Permission.__table__, 'after_create')
+def insert_initial_permissions(*args, **kwargs):
+    for p in app.config.get("PERMISSIONS", []):
+        db.session.add(Permission(name=p))
+    db.session.commit()
--- a/backend/models/virtual_command_model.py
+++ b/backend/models/virtual_command_model.py
@@ -0,0 +1,95 @@
+import json
+from datetime import datetime
+
+from sqlalchemy.ext.hybrid import hybrid_property
+from sqlalchemy.orm import backref
+
+from backend import db
+
+# This is the association table for the many-to-many relationship between
+# virtual commands and recorder commands.
+virtual_command_recorder_command_table = db.Table('virtual_command_recorder_command',
+                                                  db.Column('virtual_command_id', db.Integer,
+                                                            db.ForeignKey('virtual_command.id',
+                                                                          onupdate="CASCADE",
+                                                                          ondelete="CASCADE"),
+                                                            primary_key=True),
+                                                  db.Column('recorder_command_id', db.Integer,
+                                                            db.ForeignKey('recorder_command.id',
+                                                                          onupdate="CASCADE",
+                                                                          ondelete="CASCADE"),
+                                                            primary_key=True))
+
+# This is the association table for the many-to-many relationship between
+# virtual commands and recorder commands.
+virtual_command_recorder_table = db.Table('virtual_command_recorder',
+                                          db.Column('virtual_command_id', db.Integer,
+                                                    db.ForeignKey('virtual_command.id',
+                                                                  onupdate="CASCADE",
+                                                                  ondelete="CASCADE"),
+                                                    primary_key=True),
+                                          db.Column('recorder_id', db.Integer,
+                                                    db.ForeignKey('recorder.id',
+                                                                  onupdate="CASCADE",
+                                                                  ondelete="CASCADE"),
+                                                    primary_key=True))
+
+
+class VirtualCommand(db.Model):
+    id = db.Column(db.Integer, autoincrement=True, primary_key=True)
+    created_at = db.Column(db.DateTime, nullable=False, default=datetime.utcnow())
+    name = db.Column(db.Unicode(63), unique=True, nullable=False)
+    description = db.Column(db.Unicode(255), unique=False, nullable=True, default="")
+
+    recorders = db.relationship('Recorder', secondary=virtual_command_recorder_table,
+                                back_populates='virtual_commands')
+
+    recorder_commands = db.relationship('RecorderCommand', secondary=virtual_command_recorder_command_table,
+                                        back_populates='virtual_commands')
+
+    # parent_virtual_command = db.relationship('VirtualCommand', back_populates='child_virtual_commands')
+    parent_virtual_command_id = db.Column(db.Integer, db.ForeignKey('virtual_command.id'))
+    child_virtual_commands = db.relationship('VirtualCommand',
+                                             backref=backref('parent_virtual_command', remote_side=[id]))
+
+    command_order_string = db.Column(db.String)
+
+    def __init__(self, **kwargs):
+        super(VirtualCommand, self).__init__(**kwargs)
+
+    @staticmethod
+    def get_by_name(name):
+        """
+        Find group by name
+        :param name:
+        :return:
+        """
+        return VirtualCommand.query.filter(VirtualCommand.name == name).first()
+
+    @staticmethod
+    def get_all():
+        """
+        Return all groups
+        :return:
+        """
+        return VirtualCommand.query.all()
+
+    @hybrid_property
+    def command_order(self):
+        if self.command_order_string is None:
+            return []
+        return json.loads(self.command_order_string)
+
+    @command_order.setter
+    def command_order(self, ordered_list_of_commands: list):
+        self.command_order_string = json.dumps(ordered_list_of_commands)
+
+    def __str__(self):
+        return self.name
+
+    def to_dict(self):
+        return dict(id=self.id, name=self.name, description=self.description)
+
+    def toJSON(self):
+        return json.dumps(self.to_dict(), default=lambda o: o.__dict__,
+                          sort_keys=True, indent=4)
--- a/backend/recorder_adapters/init.py
+++ b/backend/recorder_adapters/init.py
@@ -0,0 +1,178 @@
+import importlib
+import inspect
+import pkgutil
+import sys
+import telnetlib
+from abc import ABC, abstractmethod
+
+defined_recorder_adapters = None
+
+# monkey patching of telnet lib
+from pprint import pprint
+
+original_read_until = telnetlib.Telnet.read_until
+original_write = telnetlib.Telnet.write
+
+
+def new_read_until(self, match, timeout=None):
+    if isinstance(match, str):
+        return original_read_until(self, match.encode("ascii"), timeout)
+    else:
+        return original_read_until(self, match, timeout)
+
+
+def new_write(self, buffer):
+    if isinstance(buffer, str):
+        return original_write(self, buffer.encode("ascii"))
+    else:
+        return original_write(self, buffer)
+
+
+telnetlib.Telnet.read_until = new_read_until
+telnetlib.Telnet.write = new_write
+
+
+def read_line(self, timeout=2):
+    return self.read_until("\n", timeout)
+
+
+telnetlib.Telnet.read_line = read_line
+
+
+def read_until_non_empty_line(self):
+    line = self.read_line()
+    if line is None:
+        return None
+    while len(line.rstrip()) <= 0:
+        line = self.read_line()
+    return line
+
+
+telnetlib.Telnet.read_until_non_empty_line = read_until_non_empty_line
+
+
+def assert_string_in_output(self, string, timeout=2):
+    resp = self.read_until(string, timeout)
+    if resp is None:
+        return False, resp,
+    resp = resp.decode("ascii")
+    if string in resp:
+        return True, resp
+    return False, resp
+
+
+telnetlib.Telnet.assert_string_in_output = assert_string_in_output
+
+
+class TelnetAdapter(ABC):
+    def __init__(self, address, esc_char="W"):
+        self.address = address
+        self.tn = None
+        self.esc_char = esc_char
+
+    @abstractmethod
+    def _login(self):
+        pass
+
+    def _run_cmd(self, cmd, timeout=1, auto_connect=True):
+        if self.tn is None and not auto_connect:
+            raise Exception("Not connected!")
+        elif self.tn is None:
+            self._login()
+        self.tn.write(cmd)
+        out = self.tn.read_until_non_empty_line()
+        res = out
+        while out is not None and out != "":
+            out = self.tn.read_until_non_empty_line()
+            print(out)
+            res += out
+        return res
+
+    @staticmethod
+    def _get_response_str(tn_response):
+        if isinstance(tn_response, bytes):
+            return str(tn_response.decode("ascii").rstrip())
+        else:
+            return str(tn_response).rstrip()
+
+
+class RecorderAdapter:
+    def __init__(self, address: str, user: str, password: str):
+        self.address = address
+        self.user = user
+        self.password = password
+
+    @classmethod
+    @abstractmethod
+    def get_recorder_params(cls) -> dict:
+        pass
+
+    @abstractmethod
+    def _get_name(self):
+        pass
+
+    @abstractmethod
+    def _get_version(self):
+        pass
+
+    @abstractmethod
+    def is_recording(self) -> bool:
+        pass
+
+    def get_recording_status(self) -> str:
+        pass
+
+
+def get_defined_recorder_adapters() -> list:
+    rec_adapters_module = importlib.import_module(".recorder_adapters", package='backend')
+    rec_adapter_class = getattr(rec_adapters_module, "RecorderAdapter")  # needed, otherwise subclass check may fail
+    models = []
+    found_packages = list(pkgutil.iter_modules(rec_adapters_module.__path__))
+    for f_p in found_packages:
+        importer = f_p[0]
+        rec_model_module = importer.find_module(f_p[1]).load_module(f_p[1])
+        rec_model = {'id': f_p[1], 'name': f_p[1], 'commands': {}, 'path': rec_model_module.__file__}
+        if hasattr(rec_model_module, 'RECORDER_MODEL_NAME'):
+            rec_model['name'] = rec_model_module.RECORDER_MODEL_NAME
+        if hasattr(rec_model_module, 'REQUIRES_USER'):
+            rec_model['requires_user'] = rec_model_module.REQUIRES_USER
+        if hasattr(rec_model_module, 'REQUIRES_PW'):
+            rec_model['requires_password'] = rec_model_module.REQUIRES_PW
+        for name, obj in inspect.getmembers(rec_model_module, inspect.isclass):
+            if issubclass(obj, rec_adapter_class) and name != "RecorderAdapter":
+                rec_model['id'] = rec_model['id'] + "." + obj.__name__
+                rec_model['class'] = obj
+                commands = {}
+                for method_name, method in inspect.getmembers(obj, predicate=inspect.isfunction):
+                    if len(method_name) > 0 and "_" == method_name[0]:
+                        continue
+                    signature = inspect.signature(method)
+                    parameters = {}
+                    for params in signature.parameters:
+                        if params == "self":
+                            continue
+                        param_type = signature.parameters[params].annotation.__name__
+                        param_type = "_unknown_type" if param_type == "_empty" else param_type
+                        parameters[signature.parameters[params].name] = param_type
+                    if len(parameters) <= 0:
+                        parameters = None
+                    commands[method_name] = parameters
+                rec_model["commands"] = commands
+        models.append(rec_model)
+    return models
+
+
+def get_recorder_adapter_by_id(id: str, **kwargs):
+    global defined_recorder_adapters
+    if defined_recorder_adapters is None:
+        defined_recorder_adapters = get_defined_recorder_adapters()
+    for rec_adapter in defined_recorder_adapters:
+        if id in rec_adapter.get('id', '').split("."):
+            return rec_adapter['class'](**kwargs)
+    return None
+
+
+if __name__ == '__main__':
+    print(get_defined_recorder_adapters())
+    get_recorder_adapter_by_id('SMP35x', address="172.22.246.207", password="123mzsmp")
+    exit()
--- a/backend/recorder_adapters/epiphan_base.py
+++ b/backend/recorder_adapters/epiphan_base.py
@@ -0,0 +1,164 @@
+#  Copyright (c) 2019. Tobias Kurze
+"""
+This is the recorder adapter implementation for Epiphan Recorders. The following Epiphan recorder models are supported:
+ - LectureRecorder X2
+ - LectureRecorder
+ - VGADVI Recorder
+ - DVI Broadcaster DL
+ - DVIRecorderDL
+"""
+import shutil
+import time
+from datetime import datetime
+from pprint import pprint
+
+import requests
+from requests.auth import HTTPBasicAuth
+from requests.exceptions import ConnectionError
+
+from backend import LrcException
+from backend.recorder_adapters import RecorderAdapter
+
+# HOST = "localhost"
+from backend.tools.exception_decorator import exception_decorator
+
+RECORDER_MODEL_NAME = "Epiphan Recorder Adapter (for: LectureRecorder X2, LectureRecorder, VGADVI Recorder, " \
+                      "DVI Broadcaster DL and DVIRecorderDL)"
+
+BASE_URL = "http://172.23.8.102"  # Audimax SMP 351
+
+USER = "admin"
+PW = "lrgrashof+-"
+
+
+class Epiphan(RecorderAdapter):
+    def __init__(self, address: str, user: str, password: str, firmware_version: str = "", **kwargs):
+        if not address.startswith('http'):
+            address = 'http://' + address
+        super().__init__(address, user, password)
+        self.firmware_version = firmware_version
+        self.session = requests.Session()
+        self.session.auth = HTTPBasicAuth(self.user, self.password)
+
+    @classmethod
+    def get_recorder_params(cls) -> dict:
+        return {'_requires_user': True,
+                '_requires_password': True}
+
+    def _get_name(self):
+        return RECORDER_MODEL_NAME
+
+    def _get_version(self):
+        pass
+
+    @exception_decorator(ConnectionError)
+    def get_recording_status(self) -> dict:
+        res = self.session.get(self.address + "/admin/ajax/recorder_status.cgi")
+        if res.ok:
+            return res.json()
+        raise LrcException(res.text, res.status_code)
+
+    @exception_decorator(ConnectionError)
+    def get_sysinfo(self) -> dict:
+        res = self.session.get(self.address + "/ajax/sysinfo.cgi")
+        if res.ok:
+            return res.json()
+        raise LrcException(res.text, res.status_code)
+
+    def is_recording(self) -> bool:
+        state = self.get_recording_status().get('state', None)
+        return state == "up"
+
+    def get_recording_time(self):
+        """
+        Returns recording time in seconds. Also returns 0 if not recording.
+        :return:
+        """
+        return self.get_recording_status().get('seconds', None)
+
+    def start_recording(self):
+        res = self.session.get(self.address + "/admin/ajax/start_recorder.cgi")
+        if not res.ok:
+            raise LrcException(res.text, res.status_code)
+        time.sleep(2)  # just a little bit of waiting time -> it takes a bit for the Epiphan to update its state
+
+    def stop_recording(self):
+        res = self.session.get(self.address + "/admin/ajax/stop_recorder.cgi")
+        if not res.ok:
+            raise LrcException(res.text, res.status_code)
+        time.sleep(4)  # just a little bit of waiting time -> it takes a bit for the Epiphan to update its state
+
+    def get_ip_address(self):
+        try:
+            return self.get_sysinfo().get("system").get("network").get("interfaces")[0].get('ipaddr', None)
+        except Exception as err:
+            raise LrcException(str(err))
+
+    def get_disk_space(self):
+        try:
+            data = self.get_sysinfo().get("system").get("data")
+            return {'available': data.get("available", None), 'free': data.get("free", None),
+                    'total': data.get("total", None), 'used': data.get("total", 0) - data.get("available", 0)}
+        except Exception as err:
+            raise LrcException(str(err))
+
+    def get_video_inputs(self) -> list:
+        ret = []
+        try:
+            video = self.get_sysinfo().get("inputs").get("video")
+            for v in video:
+                ret.append(
+                    {'id': v.get('id', None), 'name': v.get('name', None), 'resolution': v.get('resolution', None)})
+            return ret
+        except Exception as err:
+            raise LrcException(str(err))
+
+    def get_hardware_revision(self):
+        try:
+            return self.get_sysinfo().get("system").get("firmware")
+        except Exception as err:
+            raise LrcException(str(err))
+
+    def get_system_time(self):
+        try:
+            time_stamp = self.get_sysinfo().get("time")
+            return {'unix_time_stamp': time_stamp,
+                    'date_time_utc': datetime.utcfromtimestamp(time_stamp).strftime('%Y-%m-%dT%H:%M:%SZ')}
+        except Exception as err:
+            raise LrcException(str(err))
+
+    def get_screenshot(self):
+        ret = self.session.get(self.address + "/admin/grab_frame.cgi?size=256x192&device=DAV93133.vga&_t=1573471990578",
+                               stream=True)
+
+        print(ret)
+        pprint(ret.headers)
+        with open('out.jpg', 'wb') as out_file:
+            shutil.copyfileobj(ret.raw, out_file)
+        del ret
+
+
+if __name__ == '__main__':
+    e = Epiphan(BASE_URL, USER, PW)
+    try:
+        # print(e.is_recording())
+        """
+        if e.is_recording():
+            e.stop_recording()
+        else:
+            e.start_recording()
+        print(e.is_recording())
+        """
+
+        """
+        print(e.get_ip_address())
+        print(e.get_disk_space())
+        print(e.get_video_inputs())
+        print(e.get_hardware_revision())
+        print(e.get_system_time())
+        """
+
+        e.get_screenshot()
+
+    except LrcException as e:
+        print(e)
--- a/backend/recorder_adapters/extron_smp.py
+++ b/backend/recorder_adapters/extron_smp.py
@@ -0,0 +1,846 @@
+"""
+Recorder Adapter for SMP
+"""
+import logging
+
+from backend import LrcException
+from backend.recorder_adapters import telnetlib, TelnetAdapter, RecorderAdapter
+from backend.tools.exception_decorator import exception_decorator
+
+logger = logging.getLogger("lrc.recorder_adapters.extron_smp")
+
+RECORDER_MODEL_NAME = "Recorder Adapter for SMP 351 and 352"
+VERSION = "0.9.0"
+REQUIRES_USER = False
+REQUIRES_PW = True
+
+# HOST = "localhost"
+# HOST = "129.13.51.102"  # Audimax SMP 351
+# HOST = "129.13.51.106"  # Tulla SMP 351
+HOST = "172.22.246.207"  # Test SMP MZ
+# HOST = "129.13.51.109"  # Hertz
+
+USER = "admin"
+PW = "123mzsmp"
+# PW = "audimaxsmp"
+# PW = "smphertz"
+
+
+class SMP35x(TelnetAdapter, RecorderAdapter):
+    def __init__(self, address, password, auto_login=True, **kwargs):
+        RecorderAdapter.__init__(self, address, "", password)
+        TelnetAdapter.__init__(self, address)
+        if auto_login:
+            self._login()
+
+    def _login(self):
+        logger.debug("Connecting to {} ...".format(self.address))
+        try:
+            self.tn = telnetlib.Telnet(self.address)
+        except TimeoutError as e:
+            raise LrcException(str(e))
+        except ConnectionRefusedError as e:
+            raise LrcException(str(e))
+        self.tn.read_until("\r\nPassword:")
+        # password = getpass.getpass()
+        password = self.password
+        self.tn.write(password + "\n\r")
+
+        out = self.tn.assert_string_in_output("Login Administrator")
+        # print(out)
+        if not out[0]:
+            # print(out[1])
+            if "Password:" in out[1]:
+                # TODO: loop until logged in...
+                logger.warning("Could not login (as admin) with given password! {}".format(self.address))
+                logger.debug("re-enter password")
+                self.tn.write(self.password + "\n\r")
+                # print(self.tn.assert_string_in_output("Login Administrator"))
+            self.tn = None
+            logger.error("Could definitely not login (as admin) with given password! {}".format(self.address))
+            raise LrcException("Could not login as administrator with given pw!")
+        # print("OK, we have admin rights!")
+
+    def _get_name(self):
+        return RECORDER_MODEL_NAME
+
+    def _get_version(self):
+        return VERSION
+
+    def get_version(self, include_build=False, verbose_info=False):
+        if verbose_info:
+            self.tn.write("0Q")
+        else:
+            if include_build:
+                self.tn.write("*Q\n")
+            else:
+                self.tn.write("1Q\n")
+
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_bootstrap_version(self):
+        self.tn.write("2Q")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_factory_firmware_version(self):
+        self.tn.write("3Q")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_updated_firmware_version(self):
+        self.tn.write("4Q")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_part_number(self):
+        self.tn.write("N")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_model_name(self):
+        self.tn.write("1I")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_model_description(self):
+        self.tn.write("2I")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_system_memory_usage(self):
+        self.tn.write("3I")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_number_of_connected_users(self):
+        self.tn.write("10I")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_system_processer_usage(self):
+        self.tn.write("11I")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_system_processor_idle(self):
+        self.tn.write("12I")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_eth0_link_status(self):
+        self.tn.write("13I")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_file_transfer_config(self):
+        self.tn.write("38I")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_active_alarms(self):
+        self.tn.write("39I")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def set_unit_name(self, name: str):
+        # TODO: check name (must comply with internet host name standards)
+        self.tn.write(self.esc_char + name + "CN\n")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def reset_unit_name(self):
+        self.tn.write(self.esc_char + " CN\n")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_unit_name(self):
+        self.tn.write(self.esc_char + "CN\n")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_telnet_connections(self):
+        self.tn.write(self.esc_char + "CC\n")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def set_verbose_mode(self, mode: int):
+        """
+        Mode:
+        0=clear/none (default for telnet connections
+        1=verbose mode (default for USB and RS-232 host control)
+        2=tagged responses for queries
+        3=verbose mode and tagged responses for queries
+        :param mode:
+        :return:
+        """
+        if mode not in range(4):
+            raise LrcException("Only values from 0 to 3 are allowed!")
+        self.tn.write(self.esc_char + str(mode) + "CV\n")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_verbose_mode(self):
+        self.tn.write(self.esc_char + "CV\n")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def save_configuration(self, mode: int = 2):
+        """
+        Mode:
+        0 = IP config
+        2 = Box specific parameters
+        :param mode:
+        :return:
+        """
+        if mode not in [0, 2]:
+            raise LrcException("Only values 0 and 2 are allowed!")
+        self.tn.write(self.esc_char + "1*{}XF\n".format(mode))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def restore_configuration(self, mode: int = 2):
+        """
+        Mode:
+        0 = IP config
+        2 = Box specific parameters
+        :param mode:
+        :return:
+        """
+        if mode not in [0, 2]:
+            raise LrcException("Only values 0 and 2 are allowed!")
+        self.tn.write(self.esc_char + "0*{}XF\n".format(mode))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def reboot(self):
+        self.tn.write(self.esc_char + "1BOOT\n")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def restart_network(self):
+        self.tn.write(self.esc_char + "2BOOT\n")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def reset_flash(self):
+        """
+        Reset flash memory (excludes recording files).
+        :return:
+        """
+        self.tn.write(self.esc_char + "ZFFF\n")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def system_reset(self):
+        """
+        Resets device to default and deletes recorded files
+        :return:
+        """
+        self.tn.write(self.esc_char + "ZXXX\n")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def reset_settings_and_delete_all_files(self):
+        """
+        Reset to default except IP address, delete all user and recorded files
+        :return:
+        """
+        self.tn.write(self.esc_char + "ZY\n")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def absolute_reset(self):
+        """
+        Same as System Reset, plus returns the IP address and subnet mask to defaults.
+        :return:
+        """
+        self.tn.write(self.esc_char + "ZQQQ\n")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def set_front_panel_lock(self, mode: int):
+        """
+        0=Off
+        1=complete lockout (no front panel control)
+        2=menu lockout
+        3=recording controls
+        :param mode: Execute mode int code
+        :return:
+        """
+        if mode not in range(4):
+            raise LrcException("Only values from 0 to 3 are allowed!")
+        self.tn.write(str(mode) + "X\n")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_front_panel_lock(self):
+        """
+        View executive mode.
+        0=Off
+        1=complete lockout (no front panel control)
+        2=menu lockout
+        3=recording controls
+        :return:
+        """
+        self.tn.write("X\n")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    """
+    A lot of stuff related to network settings (ports of services, SNMP, IP, DHCP, etc.)
+    Only some stuff will be implemented here!
+    """
+
+    """
+    def get_date_time(self):
+        pass
+
+    def get_time_zone(self):
+        pass
+
+    def get_dhcp_mode(self):
+        pass
+
+    def get_network_settings(self):
+        pass
+
+    def get_ip_address(self):
+        pass
+
+    def get_mac_address(self):
+        pass
+
+    def get_subnet_mask(self):
+        pass
+
+    def get_gateway_ip(self):
+        pass
+
+    def get_dns_server_ip(self):
+        pass
+    """
+
+    """
+    RS-232 / serial port related stuff not implemented.
+    Password and security related stuff not implemented.
+    File related stuff not implemented. (-> use sftp)
+    """
+
+    def set_input(self, input_num: int, channel_num: int):
+        """
+        Switches input # (1 to 5) to output channel (1=A [input 1 and 2], 2=B [input  3, 4 and 5])
+        :param input_num:
+        :param channel_num:
+        :return:
+        """
+        if input_num not in range(1, 6):
+            raise LrcException("input_num must be a value between 1 and 5!")
+        if channel_num not in range(1, 3):
+            raise LrcException("input_num must be a value between 1 and 2!")
+        self.tn.write("{}*{}!\n".format(input_num, channel_num))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_input(self, channel_num: int):
+        if channel_num not in range(1, 2):
+            raise LrcException("input_num must be a value between 1 and 2!")
+        self.tn.write("{}!\n".format(channel_num))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def set_input_format(self, input_num: int, input_format: int):
+        """
+        Sets the input to the format, where the input_format parameter may be:
+        1 = YUVp / HDTV (default)
+        2 = YUVi
+        3 = Composite
+        :param input_num:
+        :param input_format:
+        :return:
+        """
+        if input_num not in range(1, 6):
+            raise LrcException("input_num must be a value between 1 and 5!")
+        if input_format not in range(1, 4):
+            raise LrcException("input_num must be a value between 1 and 3!")
+        self.tn.write("{}*{}\\\n".format(input_num, input_format))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_input_format(self, input_num: int):
+        if input_num not in range(1, 6):
+            raise LrcException("input_num must be a value between 1 and 5!")
+        self.tn.write("{}\\\n".format(input_num))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def set_input_name(self, input_num: int, input_name: str):
+        if input_num not in range(1, 6):
+            raise LrcException("input_num must be a value between 1 and 5!")
+        if len(input_name) > 16:
+            raise LrcException("input_name must be no longer than 16 chars")
+        try:
+            input_name.encode('ascii')
+        except UnicodeEncodeError:
+            raise LrcException("input_name must only contain ascii characters")
+        self.tn.write("{}{},{}NI\n".format(self.esc_char, input_num, input_name))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_input_name(self, input_num: int):
+        if input_num not in range(1, 6):
+            raise LrcException("input_num must be a value between 1 and 5!")
+        self.tn.write("{}{}NI\n".format(self.esc_char, input_num))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_input_selection_per_channel(self):
+        self.tn.write("32I\n")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    """
+        Input configuration part skipped
+    """
+
+    def stop_recording(self):
+        self.tn.write("{}Y0RCDR\n".format(self.esc_char))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def start_recording(self):
+        self.tn.write("{}Y1RCDR\n".format(self.esc_char))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def pause_recording(self):
+        self.tn.write("{}Y2RCDR\n".format(self.esc_char))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    @exception_decorator(ConnectionError)
+    def get_recording_status(self):
+        """
+        Status may be one of:
+        0=stop
+        1=record
+        2=pause
+        :return: status
+        """
+        self.tn.write("{}YRCDR\n".format(self.esc_char))
+        return int(TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line()))
+
+    def is_recording(self) -> bool:
+        return self.get_recording_status() == 1
+
+    def extent_recording_time(self, extension_time: int):
+        """
+        Extends a scheduled recording by extension_time minutes
+        :param extension_time: must be an int from 0 to 99
+        :return:
+        """
+        if extension_time not in range(0, 100):
+            raise LrcException("extension_time must be a value between 0 and 99!")
+        self.tn.write("{}E{}RCDR\n".format(self.esc_char, extension_time))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def add_chapter_marker(self):
+        self.tn.write("{}BRCDR\n".format(self.esc_char))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def swap_channel_positions(self):
+        self.tn.write("%\n")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_recording_status_text(self):
+        self.tn.write("I\n")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_elapsed_recording_time(self):
+        self.tn.write("35I\n")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_remaining_recording_time(self):
+        self.tn.write("36I\n")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_recording_destination(self):
+        self.tn.write("37I\n")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    """
+        Metadata part skipped
+    """
+
+    def recall_user_preset(self, channel_number: int, preset_number: int):
+        if channel_number not in range(1, 3):
+            raise LrcException("channel_number must be a value between 1 and 2!")
+        if preset_number not in range(1, 17):
+            raise LrcException("preset_number must be a value between 1 and 16!")
+        self.tn.write("1*{}*{}.\n".format(channel_number, preset_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def save_user_preset(self, channel_number: int, preset_number: int):
+        if channel_number not in range(1, 3):
+            raise LrcException("channel_number must be a value between 1 and 2!")
+        if preset_number not in range(1, 17):
+            raise LrcException("preset_number must be a value between 1 and 16!")
+        self.tn.write("1*{}*{},\n".format(channel_number, preset_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def set_user_preset_name(self, preset_number: int, preset_name: str):
+        if preset_number not in range(1, 17):
+            raise LrcException("preset_number must be a value between 1 and 16!")
+        if len(preset_name) > 16:
+            raise LrcException("preset_name must be no longer than 16 chars")
+        try:
+            preset_name.encode('ascii')
+        except UnicodeEncodeError:
+            raise LrcException("preset_name must only contain ascii characters")
+        self.tn.write("{}1*{},{}PNAM\n".format(self.esc_char, preset_number, preset_name))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_user_preset_name(self, preset_number: int):
+        if preset_number not in range(1, 17):
+            raise LrcException("preset_number must be a value between 1 and 16!")
+        self.tn.write("{}1*{}PNAM\n".format(self.esc_char, preset_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_user_presets(self, input_number: int):
+        if input_number not in range(1, 6):
+            raise LrcException("input_number must be a value between 1 and 5!")
+        self.tn.write("52*{}#\n".format(input_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    # Input Presets
+    def recall_input_preset(self, channel_number: int, preset_number: int):
+        if channel_number not in range(1, 3):
+            raise LrcException("channel_number must be a value between 1 and 2!")
+        if preset_number not in range(1, 129):
+            raise LrcException("preset_number must be a value between 1 and 128!")
+        self.tn.write("2*{}*{}.\n".format(channel_number, preset_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def save_input_preset(self, channel_number: int, preset_number: int):
+        if channel_number not in range(1, 3):
+            raise LrcException("channel_number must be a value between 1 and 2!")
+        if preset_number not in range(1, 129):
+            raise LrcException("preset_number must be a value between 1 and 128!")
+        self.tn.write("1*{}*{},\n".format(channel_number, preset_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def set_input_preset_name(self, preset_number: int, preset_name: str):
+        if preset_number not in range(1, 129):
+            raise LrcException("preset_number must be a value between 1 and 128!")
+        if len(preset_name) > 16:
+            raise LrcException("preset_name must be no longer than 16 chars")
+        try:
+            preset_name.encode('ascii')
+        except UnicodeEncodeError:
+            raise LrcException("preset_name must only contain ascii characters")
+        self.tn.write("{}2*{},{}PNAM\n".format(self.esc_char, preset_number, preset_name))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_input_preset_name(self, preset_number: int):
+        if preset_number not in range(1, 129):
+            raise LrcException("preset_number must be a value between 1 and 128!")
+        self.tn.write("{}2*{}PNAM\n".format(self.esc_char, preset_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def delete_input_preset(self, preset_number: int):
+        if preset_number not in range(1, 129):
+            raise LrcException("preset_number must be a value between 1 and 128!")
+        self.tn.write("{}X2*{}PRST\n".format(self.esc_char, preset_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_input_presets(self):
+        self.tn.write("51#\n")
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    # Streaming Presets
+    def recall_streaming_preset(self, output_number: int, preset_number: int):
+        """
+        Output_number:
+        1 = Channel A
+        2 = Channel B
+        3 = Confidence Stream
+        :param preset_number:
+        :param output_number:
+        :return:
+        """
+        if output_number not in range(1, 4):
+            raise LrcException("output_number must be a value between 1 and 3!")
+        if preset_number not in range(1, 17):
+            raise LrcException("preset_number must be a value between 1 and 16!")
+        self.tn.write("3*{}*{}.\n".format(output_number, preset_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def save_streaming_preset(self, output_number: int, preset_number: int):
+        """
+        Output_number:
+        1 = Channel A
+        2 = Channel B
+        3 = Confidence Stream
+        :param output_number:
+        :param preset_number:
+        :return:
+        """
+        if output_number not in range(1, 4):
+            raise LrcException("output_number must be a value between 1 and 3!")
+        if preset_number not in range(1, 17):
+            raise LrcException("preset_number must be a value between 1 and 16!")
+        self.tn.write("3*{}*{},\n".format(output_number, preset_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def set_streaming_preset_name(self, preset_number: int, preset_name: str):
+        if preset_number not in range(1, 17):
+            raise LrcException("preset_number must be a value between 1 and 16!")
+        if len(preset_name) > 16:
+            raise LrcException("preset_name must be no longer than 16 chars")
+        try:
+            preset_name.encode('ascii')
+        except UnicodeEncodeError:
+            raise LrcException("preset_name must only contain ascii characters")
+        self.tn.write("{}3*{},{}PNAM\n".format(self.esc_char, preset_number, preset_name))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_streaming_preset_name(self, preset_number: int):
+        if preset_number not in range(1, 17):
+            raise LrcException("preset_number must be a value between 1 and 16!")
+        self.tn.write("{}3*{}PNAM\n".format(self.esc_char, preset_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def reset_streaming_preset_to_default(self, preset_number: int):
+        if preset_number not in range(1, 17):
+            raise LrcException("preset_number must be a value between 1 and 16!")
+        self.tn.write("{}X3*{}PRST\n".format(self.esc_char, preset_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    # Encoder Presets
+    def recall_encoder_preset(self, output_number: int, preset_number: int):
+        """
+        Output_number:
+        1 = Channel A
+        2 = Channel B
+        3 = Confidence Stream
+        :param preset_number:
+        :param output_number:
+        :return:
+        """
+        if output_number not in range(1, 4):
+            raise LrcException("output_number must be a value between 1 and 3!")
+        if preset_number not in range(1, 17):
+            raise LrcException("preset_number must be a value between 1 and 16!")
+        self.tn.write("4*{}*{}.\n".format(output_number, preset_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def save_encoder_preset(self, output_number: int, preset_number: int):
+        """
+        Output_number:
+        1 = Channel A
+        2 = Channel B
+        3 = Confidence Stream
+        :param preset_number:
+        :param output_number:
+        :return:
+        """
+        if output_number not in range(1, 4):
+            raise LrcException("output_number must be a value between 1 and 3!")
+        if preset_number not in range(1, 17):
+            raise LrcException("preset_number must be a value between 1 and 16!")
+        self.tn.write("4*{}*{},\n".format(output_number, preset_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def set_encoder_preset_name(self, preset_number: int, preset_name: str):
+        if preset_number not in range(1, 17):
+            raise LrcException("preset_number must be a value between 1 and 16!")
+        if len(preset_name) > 16:
+            raise LrcException("preset_name must be no longer than 16 chars")
+        try:
+            preset_name.encode('ascii')
+        except UnicodeEncodeError:
+            raise LrcException("preset_name must only contain ascii characters")
+        self.tn.write("{}4*{},{}PNAM\n".format(self.esc_char, preset_number, preset_name))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_encoder_preset_name(self, preset_number: int):
+        if preset_number not in range(1, 17):
+            raise LrcException("preset_number must be a value between 1 and 16!")
+        self.tn.write("{}4*{}PNAM\n".format(self.esc_char, preset_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def reset_encoder_preset_to_default(self, preset_number: int):
+        if preset_number not in range(1, 17):
+            raise LrcException("preset_number must be a value between 1 and 16!")
+        self.tn.write("{}X4*{}PRST\n".format(self.esc_char, preset_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    # Layout Presets
+    def save_layout_preset(self, preset_number: int):
+        if preset_number not in range(1, 17):
+            raise LrcException("preset_number must be a value between 1 and 16!")
+        self.tn.write("7*{},\n".format(preset_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def recall_layout_preset(self, preset_number: int, include_input_selections: bool = True):
+        if preset_number not in range(1, 17):
+            raise LrcException("preset_number must be a value between 1 and 16!")
+        if include_input_selections:
+            self.tn.write("7*{}.\n".format(preset_number))
+        else:
+            self.tn.write("8*{}.\n".format(preset_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def set_layout_preset_name(self, preset_number: int, preset_name: str):
+        if preset_number not in range(1, 17):
+            raise LrcException("preset_number must be a value between 1 and 16!")
+        if len(preset_name) > 16:
+            raise LrcException("preset_name must be no longer than 16 chars")
+        try:
+            preset_name.encode('ascii')
+        except UnicodeEncodeError:
+            raise LrcException("preset_name must only contain ascii characters")
+        self.tn.write("{}7*{},{}PNAM\n".format(self.esc_char, preset_number, preset_name))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_layout_preset_name(self, preset_number: int):
+        if preset_number not in range(1, 17):
+            raise LrcException("preset_number must be a value between 1 and 16!")
+        self.tn.write("{}7*{}PNAM\n".format(self.esc_char, preset_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def reset_layout_preset_to_default(self, preset_number: int):
+        if preset_number not in range(1, 17):
+            raise LrcException("preset_number must be a value between 1 and 16!")
+        self.tn.write("{}X7*{}PRST\n".format(self.esc_char, preset_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    """
+        Input adjustments skipped
+        Picture adjustments skipped
+    """
+
+    def mute_output(self, output_number: int):
+        """
+        Output_number:
+        1 = Channel A
+        2 = Channel B
+        :param output_number:
+        :return:
+        """
+        if output_number not in range(1, 3):
+            raise LrcException("output_number must be a value between 1 and 2!")
+        self.tn.write("{}*1B\n".format(output_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def unmute_output(self, output_number: int):
+        """
+        Output_number:
+        1 = Channel A
+        2 = Channel B
+        :param output_number:
+        :return:
+        """
+        if output_number not in range(1, 3):
+            raise LrcException("output_number must be a value between 1 and 2!")
+        self.tn.write("{}*0B\n".format(output_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def is_muted(self, output_number: int):
+        """
+        Output_number:
+        1 = Channel A
+        2 = Channel B
+        :param output_number:
+        :return:
+        """
+        if output_number not in range(1, 3):
+            raise LrcException("output_number must be a value between 1 and 2!")
+        self.tn.write("{}B\n".format(output_number))
+        return int(TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())) > 0
+
+    """
+        EDID skipped
+        Encoder settings skipped
+        some advanced options skipped
+    """
+
+    @classmethod
+    def get_recorder_params(cls) -> dict:
+        return {'_requires_user': False,
+        '_requires_password': True}
+
+    def get_input_hdcp_status(self, input_number: int):
+        """
+        returns:
+        0 = no sink / source detected
+        1 = sink / source detected with HDCP
+        2 = sink / source detected without HDCP
+        :param input_number: from 1 to 5
+        :return:
+        """
+        if input_number not in range(1, 6):
+            raise LrcException("input_number must be a value between 1 and 6!")
+        self.tn.write("{}I{}HDCP\n".format(self.esc_char, input_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def set_input_authorization_hdcp_on(self, input_number: int):
+        if input_number not in range(1, 6):
+            raise LrcException("input_number must be a value between 1 and 6!")
+        self.tn.write("{}E{}*1HDCP\n".format(self.esc_char, input_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def set_input_authorization_hdcp_off(self, input_number: int):
+        if input_number not in range(1, 6):
+            raise LrcException("input_number must be a value between 1 and 6!")
+        self.tn.write("{}E{}*0HDCP\n".format(self.esc_char, input_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_input_authorization_hdcp_status(self, input_number: int):
+        if input_number not in range(1, 6):
+            raise LrcException("input_number must be a value between 1 and 6!")
+        self.tn.write("{}E{}HDCP\n".format(self.esc_char, input_number))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def enable_hdcp_notification(self):
+        self.tn.write("{}N1HDCP\n".format(self.esc_char))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def disable_hdcp_notification(self):
+        self.tn.write("{}N0HDCP\n".format(self.esc_char))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_hdcp_notification_status(self):
+        self.tn.write("{}NHDCP\n".format(self.esc_char))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    # background image settings
+    def set_background_image(self, filename: str):
+        self.tn.write("{}{}RF\n".format(self.esc_char, filename))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def get_background_image_filename(self):
+        self.tn.write("{}RF\n".format(self.esc_char))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+    def mute_background_image(self):
+        self.tn.write("{}0RF\n".format(self.esc_char))
+        return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
+
+
+def main():
+    smp = SMP35x(HOST, PW, True)
+
+    print(smp)
+    print(smp.get_recording_status())
+    print(smp.is_recording())
+    print(smp.get_input_presets())
+    print(smp.get_input_selection_per_channel())
+    print(smp.get_recording_status_text())
+
+    exit()
+    smp._login()
+    print(smp.get_version(verbose_info=False))
+    print(smp.get_file_transfer_config())
+    print(smp.save_configuration())
+    print(smp.restore_configuration())
+
+    return
+    print(smp.get_bootstrap_version())
+    print(smp.get_part_number())
+    print(smp.get_model_name())
+    print(smp.get_model_description())
+
+    print(smp.get_system_memory_usage())
+
+    print(smp.get_file_transfer_config())
+
+    # print(smp.get_unit_name())
+    # print(smp.set_unit_name("mzsmp"))
+    # print(smp.get_unit_name())
+    # print(smp.reset_unit_name())
+
+    print(smp.set_front_panel_lock(0))
+    print(smp.get_front_panel_lock())
+
+    print(smp.get_input_name(1))
+    print(smp.get_input_selction_per_channel())
+    print(smp.get_recording_status())
+    print("Preset Name: " + smp.get_user_preset_name(2))
+    print(smp.get_user_presets(1))
+    print(smp.get_input_presets())
+    print(smp.get_layout_preset_name(2))
+    print(smp.get_encoder_preset_name(1))
+    print(smp.get_streaming_preset_name(2))
+    print(smp.recall_encoder_preset(3, 1))
+
+    print(smp.is_muted(2))
+    print(smp.mute_output(2))
+    print(smp.is_muted(2))
+    print(smp.unmute_output(2))
+    print(smp.is_muted(2))
+
+
+if __name__ == '__main__':
+    main()
--- a/backend/recorder_adapters/helpers.py
+++ b/backend/recorder_adapters/helpers.py
@@ -0,0 +1,61 @@
+import logging
+from typing import Union
+
+from backend.models import Recorder, RecorderCommand, LrcException
+from backend.recorder_adapters import get_recorder_adapter_by_id
+
+logger = logging.getLogger("lrc.recorder_adapters.helpers")
+
+
+def validate_recorder_command_params(recorder_command: RecorderCommand, params: dict, fail_on_missing_params=False):
+    if recorder_command.parameters is None or len(recorder_command.parameters) == 0:
+        if len(params) == 0:
+            logger.debug("Number (0) of parameters matching expected number of args of command signature.")
+            return True
+        logger.info("More arguments specified ({}) than expected!".format(len(params)))
+        return False
+    for p_n in recorder_command.parameters:
+        p_t = recorder_command.parameters[p_n]
+        p = params.get(p_n, None)
+        if p is None:
+            if fail_on_missing_params:
+                return False
+        else:
+            if p_t == 'int':
+                params[p_n] = int(p)
+    return True
+
+
+def get_function_from_recorder_command(recorder: Recorder, recorder_command: RecorderCommand,
+                                       connect_by_network_name=True):
+    adapter_name, function_name = recorder_command.name.split(':')
+    if connect_by_network_name and recorder.network_name is not None:
+        address = recorder.network_name
+    elif recorder.ip6 is not None:
+        address = recorder.ip6
+    else:
+        address = recorder.ip
+    logger.debug("Using {} to create recorder adapter to connect to {}.".format(address, recorder.name))
+    package_name, class_name = adapter_name.split('.')
+    adapter = get_recorder_adapter_by_id(class_name, address=address, user=recorder.username,
+                                         password=recorder.password, firmware_version=recorder.firmware_version)
+    logger.debug("Built adapter {}".format(adapter))
+    return getattr(adapter, function_name)
+
+
+def execute_recorder_command(recorder: Recorder, recorder_command: RecorderCommand, params: Union[dict, None] = None,
+                             connect_by_network_name=True):
+    if params is None:
+        params = dict()
+    if validate_recorder_command_params(recorder_command, params):
+        try:
+            func = get_function_from_recorder_command(recorder, recorder_command, connect_by_network_name)
+            logger.debug(
+                "Executing func: {} with params: '{}'".format(func, ", ".join(": ".join(str(_)) for _ in params.items())))
+            out = func(**params)
+            return True, out
+        except LrcException as e:
+            return False, str(e)
+    else:
+        logger.info("Could not validate given parameters!")
+        return False
--- a/backend/recorder_adapters/out.jpg
+++ b/backend/recorder_adapters/out.jpg
--- a/backend/serve_frontend.py
+++ b/backend/serve_frontend.py
@@ -0,0 +1,77 @@
+#!/usr/bin/env python
+
+# -*- coding: utf-8 -*-
+import flask
+from flask.json import dump
+from jose import jwt, jwk
+import os
+from flask import render_template, send_from_directory, Blueprint, jsonify, url_for
+from flask_pyoidc.user_session import UserSession
+
+from backend import app
+from backend.auth import oidc_auth
+
+fe_path = os.path.abspath(os.path.join(app.root_path, os.pardir, os.pardir, "frontend", "dist"))
+if not os.path.exists(fe_path) or not os.path.exists(os.path.join(fe_path, "index.html")):
+    app.logger.critical(
+        "Frontend path and/or index.html does not exist! Please build frontend before continuing! "
+        "You might want to go to ../frontend and continue from there.")
+    print("FATAL: Frontend path wrong or index.html missing -> EXITING!")
+    exit()
+fe_bp = Blueprint('frontend', __name__, url_prefix='/', template_folder=os.path.join(fe_path, ""))
+
+
+@fe_bp.route('/js/<path:path>')
+def send_js(path):
+    return send_from_directory(os.path.join(fe_path, "js"), path)
+
+
+@fe_bp.route('/css/<path:path>')
+def send_css(path):
+    return send_from_directory(os.path.join(fe_path, "css"), path)
+
+
+@fe_bp.route('/img/<path:path>')
+def send_img(path):
+    return send_from_directory(os.path.join(fe_path, "img"), path)
+
+
+@fe_bp.route('/test')
+@oidc_auth.oidc_auth()
+def test_oidc():
+    user_session = UserSession(flask.session)
+    access_token = user_session.access_token
+    token_claim = jwt.get_unverified_claims(access_token)
+    token_header = jwt.get_unverified_header(access_token)
+    return jsonify(id_token=flask.session['id_token'], access_token=flask.session['access_token'],
+                   userinfo=flask.session['userinfo'],
+                   token_claim=token_claim,
+                   token_header=token_header)
+
+
+def has_no_empty_params(rule):
+    defaults = rule.defaults if rule.defaults is not None else ()
+    arguments = rule.arguments if rule.arguments is not None else ()
+    return len(defaults) >= len(arguments)
+
+
+@fe_bp.route("/site-map")
+def site_map():
+    print("# serving site-map!!")
+    links = []
+    for rule in app.url_map.iter_rules():
+        # Filter out rules we can't navigate to in a browser
+        # and rules that require parameters
+        if has_no_empty_params(rule):
+            # if "GET" in rule.methods and has_no_empty_params(rule):
+            url = url_for(rule.endpoint, **(rule.defaults or {}))
+            links.append((url, rule.endpoint))
+    # links is now a list of url, endpoint tuples
+    # dump(links)
+    return jsonify(links)
+
+
+@fe_bp.route('/', defaults={'path': ''})
+@fe_bp.route('/<path:path>')
+def catch_all(path):
+    return render_template("index.html")
--- a/backend/tests/init.py
+++ b/backend/tests/init.py
--- a/backend/tests/base.py
+++ b/backend/tests/base.py
@@ -0,0 +1,20 @@
+
+
+from flask_testing import TestCase
+from backend import app, db
+
+
+class BaseTestCase(TestCase):
+    """ Base Tests """
+
+    def create_app(self):
+        app.config.from_object('backend.config.Config')
+        return app
+
+    def setUp(self):
+        db.create_all()
+        db.session.commit()
+
+    def tearDown(self):
+        db.session.remove()
+        db.drop_all()
--- a/backend/tests/extron_smp_testing.py
+++ b/backend/tests/extron_smp_testing.py
@@ -0,0 +1,65 @@
+import getpass
+import sys
+from abc import ABC, abstractmethod
+from backend.recorder_adapters import telnetlib
+
+# HOST = "localhost"
+# HOST = "129.13.51.102"  # Audimax SMP 351
+# HOST = "129.13.51.106"  # Tulla SMP 351
+HOST = "172.22.246.207"  # Test SMP MZ
+
+user = "admin"
+pw = "123mzsmp"
+
+
+def print_tn(tn_response):
+    if isinstance(tn_response, bytes):
+        print(tn_response.decode("ascii").rstrip())
+    else:
+        print(str(tn_response).rstrip())
+
+
+def run_cmd(tn, cmd, timeout=1):
+    tn.write(cmd)
+    out = tn.read_until_non_empty_line()
+    res = out
+    while out is not None and out != "":
+        out = tn.read_until_non_empty_line()
+        print(out)
+        res += out
+    return res
+
+
+tn = telnetlib.Telnet(HOST)
+tn.read_until("\r\nPassword:")
+# password = getpass.getpass()
+password = pw
+tn.write(password + "\n\r")
+
+if not tn.assert_string_in_output("Login Administrator")[0]:
+    print("WRONG (admin) password!! Exiting!")
+    exit(1)
+
+print("OK, we have admin rights!")
+
+tn.write("1Q\n")
+
+# print_tn(read_line(tn))
+print_tn(tn.read_until_non_empty_line())
+print("test")
+
+
+# print(run_cmd(tn, "I\n"))
+# run_cmd(tn, "X1CERT\n")
+# tn.write(chr(27)+"X1CERT")
+# tn.write("WX1CERT\n")
+# tn.write(chr(27)+"1BOOT")
+# tn.write("W1BOOT\n")
+# print_tn(tn.read_until_non_empty_line())
+# tn.write("I\n")
+# print_tn(tn.read_some())
+
+# tn.write("exit\n\r".encode("ascii"))
+
+# print_tn(tn.read_eager())
+
--- a/backend/tests/test__config.py
+++ b/backend/tests/test__config.py
@@ -0,0 +1,49 @@
+import os
+import unittest
+
+from flask import current_app
+from flask_testing import TestCase
+
+from backend import app
+
+basedir = os.path.abspath(os.path.join(os.path.abspath(app.root_path), os.pardir))
+
+
+class TestDevelopmentConfig(TestCase):
+    def create_app(self):
+        app.config.from_object('backend.config.DevelopmentConfig')
+        return app
+
+    def test_app_is_development(self):
+        self.assertFalse(app.config['SECRET_KEY'] is 'you-will-never-guess')
+        self.assertTrue(app.config['DEBUG'] is True)
+        self.assertFalse(current_app is None)
+        self.assertTrue(
+            app.config['SQLALCHEMY_DATABASE_URI'] == 'sqlite:///' + os.path.join(basedir, 'app.db_debug')
+        )
+
+
+class TestTestingConfig(TestCase):
+    def create_app(self):
+        app.config.from_object('backend.config.TestingConfig')
+        return app
+
+    def test_app_is_testing(self):
+        self.assertFalse(app.config['SECRET_KEY'] is 'you-will-never-guess')
+        self.assertTrue(app.config['DEBUG'])
+        self.assertTrue(
+            app.config['SQLALCHEMY_DATABASE_URI'] == 'sqlite:///' + os.path.join(basedir, 'app.db_test')
+        )
+
+
+class TestProductionConfig(TestCase):
+    def create_app(self):
+        app.config.from_object('backend.config.Config')
+        return app
+
+    def test_app_is_production(self):
+        self.assertTrue(app.config['DEBUG'] is False)
+
+
+if __name__ == '__main__':
+    unittest.main()
--- a/backend/tests/test_auth.py
+++ b/backend/tests/test_auth.py
@@ -0,0 +1,287 @@
+import unittest
+import json
+
+import time
+
+from backend import db
+from backend.models.user_model import User, BlacklistToken
+from backend.tests.base import BaseTestCase
+
+
+def register_user(self, email, password):
+    return self.client.post(
+        '/auth/register',
+        data=json.dumps(dict(
+            email=email,
+            password=password
+        )),
+        content_type='application/json',
+    )
+
+
+class TestAuthBlueprint(BaseTestCase):
+    def test_registration(self):
+        """ Test for user registration """
+        with self.client:
+            response = register_user(self, 'joe@gmail.com', '123456')
+            data = json.loads(response.data.decode())
+            self.assertTrue(data['status'] == 'success')
+            self.assertTrue(data['message'] == 'Successfully registered.')
+            self.assertTrue(data['auth_token'])
+            self.assertTrue(response.content_type == 'application/json')
+            self.assertEqual(response.status_code, 201)
+
+    def test_registered_with_already_registered_user(self):
+        """ Test registration with already registered email"""
+        user = User(email='joe@gmail.com', password='test')
+        db.session.add(user)
+        db.session.commit()
+        with self.client:
+            response = register_user(self, 'joe@gmail.com', '123456')
+            data = json.loads(response.data.decode())
+            self.assertTrue(data['status'] == 'fail')
+            self.assertTrue(
+                data['message'] == 'User already exists. Please Log in.')
+            self.assertTrue(response.content_type == 'application/json')
+            self.assertEqual(response.status_code, 202)
+
+    def test_registered_user_login(self):
+        """ Test for login of registered-user login """
+        with self.client:
+            # user registration
+            resp_register = register_user(self, 'joe@gmail.com', '123456')
+            data_register = json.loads(resp_register.data.decode())
+            self.assertTrue(data_register['status'] == 'success')
+            self.assertTrue(
+                data_register['message'] == 'Successfully registered.'
+            )
+            self.assertTrue(data_register['auth_token'])
+            self.assertTrue(resp_register.content_type == 'application/json')
+            self.assertEqual(resp_register.status_code, 201)
+            # registered user login
+            response = self.client.post(
+                '/auth/login',
+                data=json.dumps(dict(
+                    nickname='test_nick',
+                    email='joe@gmail.com',
+                    password='123456'
+                )),
+                content_type='application/json'
+            )
+            data = json.loads(response.data.decode())
+            self.assertTrue(data['status'] == 'success')
+            self.assertTrue(data['message'] == 'Successfully logged in.')
+            self.assertTrue(data['auth_token'])
+            self.assertTrue(response.content_type == 'application/json')
+            self.assertEqual(response.status_code, 200)
+
+    def test_non_registered_user_login(self):
+        """ Test for login of non-registered user """
+        with self.client:
+            response = self.client.post(
+                '/auth/login',
+                data=json.dumps(dict(
+                    nickname='test_nick',
+                    email='joe@gmail.com',
+                    password='123456'
+                )),
+                content_type='application/json'
+            )
+            data = json.loads(response.data.decode())
+            self.assertTrue(data['status'] == 'fail')
+            self.assertTrue(data['message'] == 'User does not exist.')
+            self.assertTrue(response.content_type == 'application/json')
+            self.assertEqual(response.status_code, 404)
+
+    def test_user_status(self):
+        """ Test for user status """
+        with self.client:
+            resp_register = register_user(self, 'joe@gmail.com', '123456')
+            response = self.client.get(
+                '/auth/status',
+                headers=dict(
+                    Authorization='Bearer ' + json.loads(
+                        resp_register.data.decode()
+                    )['auth_token']
+                )
+            )
+            data = json.loads(response.data.decode())
+            self.assertTrue(data['status'] == 'success')
+            self.assertTrue(data['data'] is not None)
+            self.assertTrue(data['data']['email'] == 'joe@gmail.com')
+            # self.assertTrue(data['data']['admin'] is 'true' or 'false')
+            self.assertEqual(response.status_code, 200)
+
+    def test_valid_logout(self):
+        """ Test for logout before token expires """
+        with self.client:
+            # user registration
+            resp_register = register_user(self, 'joe@gmail.com', '123456')
+            data_register = json.loads(resp_register.data.decode())
+            self.assertTrue(data_register['status'] == 'success')
+            self.assertTrue(
+                data_register['message'] == 'Successfully registered.')
+            self.assertTrue(data_register['auth_token'])
+            self.assertTrue(resp_register.content_type == 'application/json')
+            self.assertEqual(resp_register.status_code, 201)
+            # user login
+            resp_login = self.client.post(
+                '/auth/login',
+                data=json.dumps(dict(
+                    email='joe@gmail.com',
+                    password='123456'
+                )),
+                content_type='application/json'
+            )
+            data_login = json.loads(resp_login.data.decode())
+            self.assertTrue(data_login['status'] == 'success')
+            self.assertTrue(data_login['message'] == 'Successfully logged in.')
+            self.assertTrue(data_login['auth_token'])
+            self.assertTrue(resp_login.content_type == 'application/json')
+            self.assertEqual(resp_login.status_code, 200)
+            # valid token logout
+            response = self.client.post(
+                '/auth/logout',
+                headers=dict(
+                    Authorization='Bearer ' + json.loads(
+                        resp_login.data.decode()
+                    )['auth_token']
+                )
+            )
+            data = json.loads(response.data.decode())
+            self.assertTrue(data['status'] == 'success')
+            self.assertTrue(data['message'] == 'Successfully logged out.')
+            self.assertEqual(response.status_code, 200)
+
+    def test_invalid_logout(self):
+        """ Testing logout after the token expires """
+        with self.client:
+            # user registration
+            resp_register = register_user(self, 'joe@gmail.com', '123456')
+            data_register = json.loads(resp_register.data.decode())
+            self.assertTrue(data_register['status'] == 'success')
+            self.assertTrue(
+                data_register['message'] == 'Successfully registered.')
+            self.assertTrue(data_register['auth_token'])
+            self.assertTrue(resp_register.content_type == 'application/json')
+            self.assertEqual(resp_register.status_code, 201)
+            # user login
+            resp_login = self.client.post(
+                '/auth/login',
+                data=json.dumps(dict(
+                    email='joe@gmail.com',
+                    password='123456'
+                )),
+                content_type='application/json'
+            )
+            data_login = json.loads(resp_login.data.decode())
+            self.assertTrue(data_login['status'] == 'success')
+            self.assertTrue(data_login['message'] == 'Successfully logged in.')
+            self.assertTrue(data_login['auth_token'])
+            self.assertTrue(resp_login.content_type == 'application/json')
+            self.assertEqual(resp_login.status_code, 200)
+            # invalid token logout
+            time.sleep(6)
+            response = self.client.post(
+                '/auth/logout',
+                headers=dict(
+                    Authorization='Bearer ' + json.loads(
+                        resp_login.data.decode()
+                    )['auth_token']
+                )
+            )
+            print(response.data)
+            data = json.loads(response.data.decode())
+            self.assertTrue(data['status'] == 'fail')
+            self.assertTrue(
+                data['message'] == 'Signature expired. Please log in again.')
+            self.assertEqual(response.status_code, 401)
+
+    def test_valid_blacklisted_token_logout(self):
+        """ Test for logout after a valid token gets blacklisted """
+        with self.client:
+            # user registration
+            resp_register = register_user(self, 'joe@gmail.com', '123456')
+            data_register = json.loads(resp_register.data.decode())
+            self.assertTrue(data_register['status'] == 'success')
+            self.assertTrue(
+                data_register['message'] == 'Successfully registered.')
+            self.assertTrue(data_register['auth_token'])
+            self.assertTrue(resp_register.content_type == 'application/json')
+            self.assertEqual(resp_register.status_code, 201)
+            # user login
+            resp_login = self.client.post(
+                '/auth/login',
+                data=json.dumps(dict(
+                    email='joe@gmail.com',
+                    password='123456'
+                )),
+                content_type='application/json'
+            )
+            data_login = json.loads(resp_login.data.decode())
+            self.assertTrue(data_login['status'] == 'success')
+            self.assertTrue(data_login['message'] == 'Successfully logged in.')
+            self.assertTrue(data_login['auth_token'])
+            self.assertTrue(resp_login.content_type == 'application/json')
+            self.assertEqual(resp_login.status_code, 200)
+            # blacklist a valid token
+            blacklist_token = BlacklistToken(
+                token=json.loads(resp_login.data.decode())['auth_token'])
+            db.session.add(blacklist_token)
+            db.session.commit()
+            # blacklisted valid token logout
+            response = self.client.post(
+                '/auth/logout',
+                headers=dict(
+                    Authorization='Bearer ' + json.loads(
+                        resp_login.data.decode()
+                    )['auth_token']
+                )
+            )
+            data = json.loads(response.data.decode())
+            self.assertTrue(data['status'] == 'fail')
+            self.assertTrue(data['message'] == 'Token blacklisted. Please log in again.')
+            self.assertEqual(response.status_code, 401)
+
+    def test_valid_blacklisted_token_user(self):
+        """ Test for user status with a blacklisted valid token """
+        with self.client:
+            resp_register = register_user(self, 'joe@gmail.com', '123456')
+            # blacklist a valid token
+            blacklist_token = BlacklistToken(
+                token=json.loads(resp_register.data.decode())['auth_token'])
+            db.session.add(blacklist_token)
+            db.session.commit()
+            response = self.client.get(
+                '/auth/status',
+                headers=dict(
+                    Authorization='Bearer ' + json.loads(
+                        resp_register.data.decode()
+                    )['auth_token']
+                )
+            )
+            data = json.loads(response.data.decode())
+            self.assertTrue(data['status'] == 'fail')
+            self.assertTrue(data['message'] == 'Token blacklisted. Please log in again.')
+            self.assertEqual(response.status_code, 401)
+
+    def test_user_status_malformed_bearer_token(self):
+        """ Test for user status with malformed bearer token"""
+        with self.client:
+            resp_register = register_user(self, 'joe@gmail.com', '123456')
+            response = self.client.get(
+                '/auth/status',
+                headers=dict(
+                    Authorization='Bearer' + json.loads(
+                        resp_register.data.decode()
+                    )['auth_token']
+                )
+            )
+            data = json.loads(response.data.decode())
+            self.assertTrue(data['status'] == 'fail')
+            self.assertTrue(data['message'] == 'Bearer token malformed.')
+            self.assertEqual(response.status_code, 401)
+
+
+if __name__ == '__main__':
+    unittest.main()
--- a/backend/tests/test_user_model.py
+++ b/backend/tests/test_user_model.py
@@ -0,0 +1,36 @@
+import unittest
+
+from backend import db
+from backend.models.user_model import User
+from backend.tests.base import BaseTestCase
+
+
+class TestUserModel(BaseTestCase):
+
+    def test_encode_auth_token(self):
+        user = User(
+            nickname='testheini',
+            email='test@test.com',
+            password='test'
+        )
+        db.session.add(user)
+        db.session.commit()
+        auth_token = user.encode_auth_token()
+        self.assertTrue(isinstance(auth_token, bytes))
+
+    def test_decode_auth_token(self):
+        user = User(
+            nickname='testheini',
+            email='test@test.com',
+            password='test'
+        )
+        db.session.add(user)
+        db.session.commit()
+        auth_token = user.encode_auth_token()
+        self.assertTrue(isinstance(auth_token, bytes))
+        self.assertTrue(User.decode_auth_token(
+            auth_token.decode("utf-8")) == 1)
+
+
+if __name__ == '__main__':
+    unittest.main()
--- a/backend/tools/init.py
+++ b/backend/tools/init.py
@@ -0,0 +1,2 @@
+#  Copyright (c) 2019. Tobias Kurze, KIT
+
--- a/backend/tools/exception_decorator.py
+++ b/backend/tools/exception_decorator.py
@@ -0,0 +1,13 @@
+from backend import LrcException
+
+
+def exception_decorator(*exceptions):
+    def decorator(func):
+        def new_func(*args, **kwargs):
+            try:
+                ret = func(*args, **kwargs)
+                return ret
+            except exceptions as e:
+                raise LrcException(e)
+        return new_func
+    return decorator
--- a/backend/tools/helpers.py
+++ b/backend/tools/helpers.py
@@ -0,0 +1,17 @@
+import hashlib
+
+
+def calculate_md5_checksum(string_to_md5_sum: str):
+    return hashlib.md5(string_to_md5_sum.encode('utf-8')).hexdigest()
+
+
+def file_md5(fname: str) -> str:
+    hash_md5 = hashlib.md5()
+    with open(fname, "rb") as f:
+        for chunk in iter(lambda: f.read(4096), b""):
+            hash_md5.update(chunk)
+    return hash_md5.hexdigest()
+
+
+if __name__ == '__main__':
+    print(file_md5(__file__))
--- a/backend/tools/import_excel_recorder_list.py
+++ b/backend/tools/import_excel_recorder_list.py
@@ -0,0 +1,56 @@
+import json
+from pprint import pprint
+
+import xlrd
+
+MAX_CONSECUTIVE_EMPTY_ROWS_BEFORE_CANCEL = 5
+file_location = "/home/tobias/tmp/Hoersaal-Rec-Liste.xlsx"
+
+wb = xlrd.open_workbook(file_location)
+sheet = wb.sheet_by_index(0)
+
+headers = None
+recorders = []
+a_lot_of_empty_rows = False
+consecutive_empty_rows = 0
+ix = 0
+while not a_lot_of_empty_rows:
+    try:
+        vals = sheet.row_values(ix)
+    except IndexError:
+        break
+    if len(set(vals)) == 1 and set(vals).pop() == '':
+        consecutive_empty_rows += 1
+        if consecutive_empty_rows > MAX_CONSECUTIVE_EMPTY_ROWS_BEFORE_CANCEL:
+            a_lot_of_empty_rows = True
+    else:
+        consecutive_empty_rows = 0
+    if len(set(vals)) > 5 and headers is None:  # get table header
+        headers = {ix: vals[ix] for ix in range(0, len(vals))}
+    elif len(set(vals)) > 5:  # regular rows
+        recorders.append({headers[ix]: vals[ix] for ix in range(0, len(vals))})
+    ix += 1
+    if ix >= 100:
+        a_lot_of_empty_rows = True
+
+#pprint(recorders)
+print(len(recorders))
+
+nicely_formatted_recorders = []
+for r in recorders:
+    rec = {'name': r['Opencast / CM'],
+           'building': r['Gebäude'],
+           'room': r['Hörsaal'],
+           'username': r['Benutzer'],
+           'password': r['PW'],
+           'ip': r['IP'],
+           'mac': r['MAC'],
+           'type': 'SMP 351' if 'SMP 351' in r['Rekorder-Typ'] else r['Rekorder-Typ'],
+           'additional_camera': r['Zus. Kamera'] == 'Ja',
+           'firmware_version': r['FW – Vers.'],
+           'network_name': r['DNS'],
+           'description': json.dumps(
+               {'comment': r['Bemerkung'], 'network_port': r['Dosennummer'], 'rsync_name': r['Rsync-Name']})}
+    nicely_formatted_recorders.append(rec)
+
+print(json.dumps(nicely_formatted_recorders))
--- a/backend/tools/model_updater.py
+++ b/backend/tools/model_updater.py
@@ -0,0 +1,198 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+#  Copyright (c) 2019. Tobias Kurze
+
+import hashlib
+import json
+import logging
+import os
+import re
+from datetime import datetime
+from json import dumps
+from pprint import pprint
+
+from sqlalchemy import and_
+from sqlalchemy.exc import IntegrityError
+
+from backend import db
+from backend.models import Room
+from backend.models.recorder_model import RecorderModel, RecorderCommand, Recorder
+from backend.recorder_adapters import get_defined_recorder_adapters
+from backend.tools.helpers import calculate_md5_checksum
+
+logger = logging.getLogger("lrc." + __name__)
+
+KNOWN_RECORDERS = {re.compile(r'(?P<name>SMP)[\s]*(?P<number>[\d]+)[\s]*.?[\s]*(?P<options>[\S]*)'): 'SMP',
+                   re.compile(
+                       r'(?P<name>LectureRecorder X2|LectureRecorder|VGADVI Recorder|DVI Broadcaster DL|DVIRecorderDL)'): 'Epiphan'}
+
+
+def create_recorder_commands_for_recorder_adapter(command_definitions: dict, recorder_model: RecorderModel):
+    logger.debug("Received {} command definitions to create "
+                 "for recoder model {}".format(len(command_definitions),
+                                               recorder_model.record_adapter_id))
+    existing_recorder_commands = RecorderCommand.query.filter(
+        and_(
+            RecorderCommand.name.in_([recorder_model.record_adapter_id + ":" + k for k in command_definitions.keys()])),
+        RecorderCommand.recorder_model == recorder_model)
+    existing_commands = set()
+    for existing_command in existing_recorder_commands:
+        existing_commands.add(existing_command.name)
+        args = command_definitions.get(existing_command.name)
+        if dumps(existing_command.parameters) != dumps(args):
+            logger.warning(
+                "The function definition {} collides with an existing definition of the same name "
+                "but different parameters!".format(
+                    existing_command.name))
+            existing_command.last_time_modified = datetime.utcnow()
+            existing_command.parameters = args
+    db.session.commit()
+
+    for c_d in set(command_definitions.keys()) - existing_commands:
+        args = command_definitions.get(c_d)
+        # print(args)
+        # create new recorder command(s)
+        r_c = RecorderCommand(name=recorder_model.record_adapter_id + ":" + c_d, parameters=args,
+                              recorder_model=recorder_model)
+        db.session.add(r_c)
+        db.session.flush()
+    db.session.commit()
+
+
+def update_recorder_models_database(drop: bool = False):
+    if drop:
+        for r in RecorderModel.get_all():
+            db.session.delete(r)
+        db.session.commit()
+    r_as = get_defined_recorder_adapters()
+    for r_a in r_as:
+        if r_a.get('class') is None:  # skip modules without class (helpers.py, e.g.)
+            continue
+        logger.info("Checking Recorder Adapter {} for possible updates".format(r_a["id"]))
+        try:
+            r_m = RecorderModel.get_by_adapter_id(r_a["id"])
+            model_checksum = calculate_md5_checksum(dumps(r_a["commands"]))
+            logger.debug("Recorder Adapter commands checksum: {}".format(model_checksum))
+            logger.debug(r_m)
+            if r_m is None:
+                r_m = RecorderModel(record_adapter_id=r_a["id"], model_name=r_a["name"], checksum=model_checksum,
+                                    **r_a.get('class').get_recorder_params())
+                db.session.add(r_m)
+                db.session.flush()
+                db.session.refresh(r_m)
+                logger.debug("Creating command definitions for rec mod adapter {}".format(r_m.record_adapter_id))
+                create_recorder_commands_for_recorder_adapter(r_a["commands"], r_m)
+            else:
+                logger.debug("Model command checksum already in db: {}".format(r_m.checksum))
+                if r_m.model_name != r_a["name"]:
+                    r_m.model_name = r_a["name"]
+                    r_m.last_time_modified = datetime.utcnow()
+                if model_checksum != r_m.checksum:
+                    create_recorder_commands_for_recorder_adapter(r_a["commands"], r_m)
+                    r_m.last_time_modified = datetime.utcnow()
+                    r_m.checksum = model_checksum
+                    r_m.last_checksum_change = datetime.utcnow()
+                    logger.debug("Updating command definitions for rec mod adapter {}".format(r_m.record_adapter_id))
+        except IntegrityError as e:
+            logger.error(e)
+            db.session.rollback()
+    db.session.commit()
+
+
+def get_recorder_room(rec: dict):
+    rooms = Room.get_by_building_number(rec.get('building', None))
+    if rooms.count() <= 0:
+        logger.warning("Building {} unknown! Can not find room for recorder {}.".format(rec['building'], rec['name']))
+        return None
+    if rooms.count() == 1:
+        return rooms.first()
+    room_name = rec.get('room')
+    room_name = room_name.replace('–', ' ')
+    for room in rooms:
+        if all([r_n in room.name for r_n in room_name.split()]):
+            return room
+    logger.warning("No room found for recorder {}".format(rec['name']))
+
+
+def create_default_recorders():
+    f = os.path.abspath(os.path.join(os.path.dirname(__file__), os.path.pardir, 'models', 'initial_recorders.json'))
+    with open(f, 'r') as json_file:
+        recorders = json.load(json_file)['recorders']
+    for r in recorders:
+        type = r.get('type')
+        firmware_version = r.get('firmware_version', None)
+        room_rec_name = r.get('name')
+        username = r.get('username', None)
+        password = r.get('password', None)
+        mac = r.get('mac', None)
+        ip4 = r.get('ip', None)
+        additional_camera = r.get('additional_camera', False)
+        description = r.get('description', '')
+        for k_r in KNOWN_RECORDERS:
+            if match := k_r.search(type):
+                name = match.groupdict().get('name')
+                model_number = match.groupdict().get('number', None)
+
+                options = match.groupdict().get('options', None)
+                if options is not None and options != "":
+                    options = options.split(',')
+
+                if model_number is not None:
+                    model_name = name + " " + model_number
+                    model_search_name = name + model_number[:-1]  # just get prefix (remove last digit); SMP 35x -> 35
+                else:
+                    model_name = name
+                    model_search_name = KNOWN_RECORDERS[k_r]
+                rec_model = RecorderModel.get_where_adapter_id_contains(model_search_name)
+                rec = Recorder.get_by_mac(mac)
+                if rec is None:
+                    rec = Recorder.get_by_name(room_rec_name + " Recorder")
+                    if rec is None:
+                        rec = Recorder()
+                        rec.mac = mac
+                    db.session.add(rec)
+                rec.name = room_rec_name + " Recorder"
+                rec.model_name = model_name
+                rec.recorder_model = rec_model
+                rec.username = username
+                rec.password = password
+                rec.firmware_version = firmware_version
+                rec.ip = ip4
+                rec.additional_camera_connected = additional_camera
+                rec.additional_note = description
+                rec.configured_options = options
+
+                rec.room = get_recorder_room(r)
+                db.session.flush()
+                db.session.refresh(rec)
+
+        db.session.commit()
+
+
+if __name__ == '__main__':
+    # for r in Room.get_all():
+    #    print(r)
+    # exit()
+
+    commands = RecorderCommand.get_all()
+    for c in commands:
+        print(c)
+        print(c.recorder_model)
+
+    for r_m in RecorderModel.get_all():
+        print(r_m.recorder_commands)
+
+    exit()
+    recorders = Recorder.get_all()
+    for r in recorders:
+        if r.room is None:
+            print("{}: {}".format(r, r.room))
+    # db.drop_all()
+    # db.create_all()
+    update_recorder_models_database()
+    create_default_recorders()
+    db.session.commit()
+
+    # print(get_recorder_room({"room": "Grosser Hörsaal Bauingenieure", "building": "10.50"}))
+    # print(get_recorder_room({"room": "Grosser Hörsaal Bauingenieure", "building": "30.95"}))
--- a/backend/tools/recorder_state_checker.py
+++ b/backend/tools/recorder_state_checker.py
@@ -0,0 +1,300 @@
+import json
+import os
+import logging
+import subprocess
+import threading
+import time
+from io import StringIO
+from logging.handlers import MemoryHandler
+from pprint import pprint
+from typing import Union
+
+import requests
+from requests.auth import HTTPBasicAuth
+from multiprocessing.pool import ThreadPool
+from multiprocessing.context import TimeoutError
+
+from ics import Calendar
+
+from backend import LrcException
+from backend.config import Config
+from backend.models import Recorder, RecorderModel
+from backend.recorder_adapters import RecorderAdapter
+
+from backend.recorder_adapters.epiphan_base import Epiphan
+from backend.recorder_adapters.extron_smp import SMP35x
+from backend.tools.recorder_streams_sanity_checks import check_frame_is_valid, check_if_audio_is_valid
+from backend.tools.send_mail import send_error_mail, get_smtp_error_handler
+
+logger = logging.getLogger("lrc.tools.simple_state_checker")
+
+smtp_error_handler = get_smtp_error_handler(subject="Errors have been detected while checking recorder states!")
+# mem_handler = MemoryHandler(capacity=100, flushLevel=logging.FATAL, target=smtp_error_handler)
+# mem_handler.setLevel(logging.WARNING)
+
+rec_err_state_log_stream = StringIO()
+rec_err_state_log_stream_handler = logging.StreamHandler(stream=rec_err_state_log_stream)
+rec_err_state_log_stream_handler.setLevel(logging.WARNING)
+
+logger.addHandler(rec_err_state_log_stream_handler)
+# logger.addHandler(mem_handler)
+
+session = requests.session()
+session.auth = HTTPBasicAuth(Config.OPENCAST_USER, Config.OPENCAST_PW)
+
+config = {'service_urls': {}}
+
+recorders = None
+
+agent_states_lock = threading.RLock()
+agent_states = {}
+
+
+def get_service_url(service_type: str):
+    if service_type in config['service_urls']:
+        return config['service_urls'][service_type]
+    params = {'serviceType': service_type}
+    url = Config.OPENCAST_URL + "/services/available.json"
+    res = session.get(url, params=params)
+    if res.ok:
+        service = res.json()["services"]["service"]
+        config["service_urls"][service_type] = service["host"] + \
+                                               service["path"]
+        return service["host"] + service["path"]
+    return None
+
+
+def get_calender(rec_id):
+    params = {'agentid': rec_id}
+    url = get_service_url('org.opencastproject.scheduler') + "/calendars"
+    res = session.get(url, params=params)
+    if res.ok:
+        return Calendar(res.text)
+
+
+def get_capture_agents():
+    url = get_service_url("org.opencastproject.capture.admin") + "/agents.json"
+    res = session.get(url)
+    if res.ok:
+        return res.json()["agents"]["agent"]
+
+
+def get_recorder_details_old():
+    """Temporary implementation using initial_recorders.json. Should be replaced by DB layer later!"""
+    global recorders
+    if recorders is None:
+        f = os.path.abspath(os.path.join(os.path.dirname(__file__), os.path.pardir, 'models', 'initial_recorders.json'))
+        with open(f, 'r') as json_file:
+            recorders = json.load(json_file)['recorders']
+    return recorders
+
+
+def get_recorder_details():
+    """New implementation using DB"""
+    global recorders
+    if recorders is None:
+        recorders = list(Recorder.get_all())
+    return recorders
+
+
+def get_recorder_by_name(name: str):
+    for r in get_recorder_details():
+        logger.debug("Got recorder {}".format(r.get("name")))
+        if r.get("name") == name or r.get("name") + " Recorder" == name or r.get("name") == name + " Recorder":
+            return r
+    logger.error("Could not find recorder for name {}".format(name))
+    return None
+
+
+def notify_users_of_problem(msg: str):
+    pass
+
+
+def get_recorder_adapter(recorder_info: Union[dict, Recorder]) -> RecorderAdapter:
+    if recorder_info is None:
+        raise LrcException("Could not find recorder Adapter as recorder info was NONE!")
+    try:
+        type = recorder_info.get("type")
+    except KeyError:
+        type = RecorderModel.get_by_id(recorder_info.get('recorder_model_id')).model_name
+    if "SMP" in type:
+        rec = SMP35x(recorder_info.get('ip'), recorder_info.get('password'))
+    else:
+        rec = Epiphan(recorder_info.get('ip'), recorder_info.get("username"), recorder_info.get("password"))
+    return rec
+
+
+def check_stream_sanity(recorder_agent: Union[Recorder, dict], recorder_adapter: RecorderAdapter = None):
+    if recorder_adapter is None:
+        recorder_info = get_recorder_by_name(recorder_agent.get('name'))
+        recorder_adapter = get_recorder_adapter(recorder_info)
+    if not recorder_adapter.is_recording():
+        return True, "not recording, so there is no stream!", recorder_agent.get('name')
+    if recorder_agent.get('archive_stream1') is None and recorder_agent.get(
+            'archive_stream2') is None:  # fall back to default names and rtsp
+        archive_stream_1_url = "rtsp://{}/{}".format(recorder_adapter.address, Config.DEFAULT_ARCHIVE_STREAM_1_NAME)
+        archive_stream_2_url = "rtsp://{}/{}".format(recorder_adapter.address, Config.DEFAULT_ARCHIVE_STREAM_2_NAME)
+    else:
+        archive_stream_1_url = recorder_agent.get('archive_stream1')
+        archive_stream_2_url = recorder_agent.get('archive_stream2')
+
+    frame_msg = frame_msg2 = sound_msg = sound_msg2 = "unknown"
+    for i in range(0, Config.STREAM_SANITY_CHECK_RETRIES):
+        frame_ok, frame_msg = check_frame_is_valid(archive_stream_1_url, raise_errors=False)
+        if not frame_ok:
+            logger.warning(
+                "Archive stream 1 ({}) of {} is not ok (frame): {}".format(archive_stream_1_url,
+                                                                           recorder_agent.get('name'),
+                                                                           frame_msg))
+            frame_ok, frame_msg2 = check_frame_is_valid(archive_stream_2_url, raise_errors=False)
+            if not frame_ok:
+                logger.warning(
+                    "Archive stream 2 {} of ({}) is not ok: {} (frame)".format(archive_stream_2_url,
+                                                                               recorder_agent.get('name'),
+                                                                               frame_msg2))
+
+        sound_ok, sound_msg = check_if_audio_is_valid(archive_stream_1_url, raise_errors=False)
+        if not sound_ok:
+            logger.warning(
+                "Archive stream 1 {} of ({}) is not ok (audio): {}".format(archive_stream_1_url,
+                                                                           recorder_agent.get('name'),
+                                                                           sound_msg))
+            sound_ok, sound_msg2 = check_if_audio_is_valid(archive_stream_2_url, raise_errors=False)
+            if not sound_ok:
+                logger.warning(
+                    "Archive stream 2 {} of ({}) is not ok (audio): {}".format(archive_stream_2_url,
+                                                                               recorder_agent.get('name'),
+                                                                               sound_msg2))
+
+        if frame_ok and sound_ok:
+            return True, "At least one archive stream is fine (audio and image)! " \
+                         "(s1: a: {}, v: {}, s2: a: {}, v: {})".format(sound_msg, frame_msg, sound_msg2,
+                                                                       frame_msg2), recorder_agent.get('name')
+
+        else:
+            time.sleep(Config.STREAM_SANITY_CHECK_INTERVAL_SEC)
+    error_msg = "After {} retries, stream checks failed and returned: archive_stream1: audio:{}, frame:{}, " \
+                "archive_stream2: audio:{}, frame:{}".format(Config.STREAM_SANITY_CHECK_RETRIES, sound_msg,
+                                                             frame_msg, sound_msg2, frame_msg2)
+    logger.error(error_msg)
+    return False, error_msg, recorder_agent.get('name')  # stream sanity check failed!
+
+
+def check_capture_agent_state(recorder_agent: Union[Recorder, dict]):
+    if recorder_agent.get('offline', False):
+        logger.info("OK - Recorder {} is in offline / maintenance mode".format(recorder_agent.get('name')))
+        return True, "Recorder is in offline / maintenance mode", recorder_agent.get('name')
+    agent_state_error_msg = None
+    logger.debug("Checking Agent {}".format(recorder_agent.get('name')))
+    c = get_calender(recorder_agent.get('name'))
+    is_recording_in_calendar = len(list(c.timeline.now())) >= 1
+    if is_recording_in_calendar:
+        logger.info("{} has entry in Calender and should therefore be recording... checking now!".format(
+            recorder_agent.get('name')))
+        if recorder_agent['state'] == "capturing":
+            recorder_info = get_recorder_by_name(recorder_agent.get('name'))
+            try:
+                rec = get_recorder_adapter(recorder_info)
+                if rec.is_recording():
+                    logger.info("OK – recorder {} is recording :)".format(recorder_agent.get('name')))
+                    with agent_states_lock:
+                        agent_states[recorder_agent.get('name')] = 'OK - recorder is recording'
+                else:
+                    logger.info(rec.get_recording_status())
+                    logger.error(
+                        "FATAL - recorder {} must be recording but is not!!!!".format(recorder_agent.get('name')))
+                    agent_state_error_msg = "FATAL - recorder must be recording but is not!"
+                    with agent_states_lock:
+                        agent_states[recorder_agent['name']] = 'FATAL - recorder is NOT recording, but should!'
+            except LrcException as e:
+                logger.fatal("Exception occurred: {}".format(str(e)))
+                logger.error("Could not check state of recorder {}, Address: {}".format(recorder_agent.get('name'),
+                                                                                        recorder_info.get('ip')))
+        else:
+            logger.error("FATAL: {} is not in capturing state...but should be!!".format(recorder_agent.get('name')))
+            agent_state_error_msg = "FATAL - is not in capturing state...but should be!"
+    else:
+        recorder_info = get_recorder_by_name(recorder_agent.get('name'))
+        try:
+            rec = get_recorder_adapter(recorder_info)
+            if rec.is_recording():
+                logger.error("FATAL - recorder must not be recording!!!!")
+                agent_state_error_msg = "FATAL - is not in capturing state...but should be!"
+                with agent_states_lock:
+                    agent_states[recorder_agent.get('name')] = 'FATAL - recorder IS recording, but should NOT!'
+            else:
+                logger.info("OK – recorder is not recording :)")
+                with agent_states_lock:
+                    agent_states[recorder_agent.get('name')] = 'OK - recorder is NOT recording'
+        except LrcException as e:
+            logger.fatal("Exception occurred: {}".format(str(e)))
+            logger.error("Could not check state of recorder {}, Address: {}".format(recorder_agent.get('name'),
+                                                                                    recorder_info.get('ip')))
+            agent_state_error_msg = "FATAL - Could not check state of recorder! Address: {}".format(
+                recorder_info.get('ip'))
+
+    if agent_state_error_msg is None:
+        return True, agent_states[recorder_agent.get('name')], recorder_agent.get('name')
+    return False, agent_state_error_msg, recorder_agent.get('name')
+
+
+def ping_capture_agent(recorder_agent: Union[Recorder, dict]):
+    if recorder_agent.get('offline', False):
+        print("is offline!")
+        logger.info("OK - Ping skipped, recorder {} is in offline mode.".format(recorder_agent.get('name')))
+        return True, "Recorder is in offline / maintenance mode", recorder_agent.get('name')
+    recorder_ip = get_recorder_by_name(recorder_agent.get('name')).get('ip')
+    try:
+        subprocess.check_call(
+            ['ping', '-W', '10', '-c', '2', recorder_ip],
+            # stderr=subprocess.STDOUT,  # get all output
+            stdout=subprocess.DEVNULL,  # suppress output
+            stderr=subprocess.DEVNULL,
+            universal_newlines=True  # return string not bytes
+        )
+        logger.info("Successfully pinged {} ({}). :-)".format(recorder_agent.get('name'), recorder_ip))
+        return True, "Successfully pinged {}. :-)".format(recorder_agent.get('name')), recorder_agent.get('name')
+    except subprocess.CalledProcessError:
+        logger.error("Can not ping {} ({})!!".format(recorder_agent.get('name'), recorder_ip))
+        return False, "Unable to ping {} ({})".format(recorder_agent.get('name'), recorder_ip), recorder_agent.get(
+            'name')
+
+
+if __name__ == '__main__':
+    agents = get_capture_agents()
+    logger.info("Got {} capture agents that will be checked...".format(len(agents)))
+
+    for a in agents:
+        agent_states[a.get('name')] = 'PROBLEMATIC - unknown'
+
+    # pool = ThreadPool(5)
+    # pool.map(check_capture_agent_state, agents)
+
+    NUM_THREADS = 8
+
+    recorders = get_recorder_details()
+    with ThreadPool(NUM_THREADS) as pool:
+        # results = [pool.apply_async(ping_capture_agent, (agent,)) for agent in agents]
+        results = [pool.apply_async(ping_capture_agent, (agent,)) for agent in recorders]
+        try:
+            [res.get(timeout=12) for res in results]
+        except TimeoutError as e:
+            logger.error("Timeout while pinging capture agent! {}".format(e))
+
+    with ThreadPool(NUM_THREADS) as pool:
+        results = [pool.apply_async(check_capture_agent_state, (agent,)) for agent in agents]
+        try:
+            [res.get(timeout=12) for res in results]
+        except TimeoutError as e:
+            logger.error("Timeout while getting capture agent state! {}".format(e))
+
+    logger.info("DONE checking capture agents / recorders!")
+
+    logged_events = rec_err_state_log_stream.getvalue()
+    if len(logged_events) > 0:
+        logged_events += "\n\n=============\nAgent States:\n\n{}".format(''.join(
+            "{:<48}: {}\n".format(a, agent_states[a]) for a in agent_states
+        ))
+        send_error_mail(logged_events, "Errors have been detected while checking recorder states!")
+
+    # mem_handler.close()
--- a/backend/tools/recorder_streams_sanity_checks.py
+++ b/backend/tools/recorder_streams_sanity_checks.py
@@ -0,0 +1,119 @@
+import io
+import logging
+import sys
+
+import ffmpeg
+import os
+import tempfile
+from PIL import Image
+from pydub import AudioSegment
+from pydub.playback import play
+
+logger = logging.getLogger("lrc.tools.recorder_streams_sanity_checks")
+
+
+def is_single_color_image(image):
+    single_color_image = True
+    color = {}
+    count = 0
+    color_channels = image.split()
+    for c in color_channels:  # r, g, b
+        hist = c.histogram()
+        num_of_non_zero_values = len([v for v in hist if v != 0])
+        logger.debug("color_channel: {}, num_of_non_zero_values (NON-BLACK): {}".format(c, num_of_non_zero_values))
+        if num_of_non_zero_values > 1:
+            single_color_image = False
+            break
+        else:
+            color[count] = [i for i in enumerate(hist) if i[1] != 0][0][0]
+        count += 1
+    return single_color_image, color
+
+
+def check_frame_is_valid(stream_url, raise_errors=True):
+    try:
+        frame, _ = (
+            ffmpeg
+                .input(stream_url)
+                .output('pipe:', vframes=1, format='image2', vcodec='mjpeg')
+                .run(capture_stdout=True, capture_stderr=True)
+        )
+        image = Image.open(io.BytesIO(frame))
+        single_color_image, color = is_single_color_image(image)
+        if not single_color_image:
+            image.show()
+            return True, "all good :-)"
+        else:
+            if all(map(lambda x: x == 0, color.values())):
+                return False, "Image is entirely black! (color: {} (RGB))".format(
+                    ':'.join([str(x) for x in color.values()]))
+            return False, "Image has only one single color! (color: {} (RGB))".format(
+                ':'.join([str(x) for x in color.values()]))
+    except ffmpeg.Error as e:
+        msg = "Could not connect to stream URL or other error!"
+        logger.error(msg)
+        try:
+            msg += " ({})".format(e.stderr.decode('utf-8').strip().split("\n")[-1])
+        except IndexError:
+            pass
+        if raise_errors:
+            raise Exception(msg)
+        else:
+            return False, msg
+
+
+def check_if_audio_is_valid(stream_url, sample_length_sec=3, lower_alert_limit_dBFS=-40.0, raise_errors=True):
+    file_name = tempfile.NamedTemporaryFile(suffix='.aac').name
+    if os.path.exists(file_name):
+        os.remove(file_name)
+    try:
+        frame, _ = (
+            ffmpeg
+                .input(stream_url, t=sample_length_sec)
+                .output(file_name)
+                .run(capture_stdout=True, capture_stderr=True)
+        )
+
+        sound = AudioSegment.from_file(file_name, "aac")
+        # print(sound.dBFS)
+        # play(sound)
+        if sound.max_dBFS == -float('inf'):
+            return False, "No active audio signal detected!"
+        elif sound.max_dBFS < lower_alert_limit_dBFS:
+            return False, "Very low volume (< {} dBFS) detected! ({})".format(lower_alert_limit_dBFS, sound.max_dBFS)
+
+        return True, "good audio signal detected! ({} max dBFS in {}s sample)".format(sound.max_dBFS, sample_length_sec)
+    except ffmpeg.Error as e:
+        msg = "Could not connect to stream URL or other error!"
+        logger.error(msg)
+        try:
+            msg += " ({})".format(e.stderr.decode('utf-8').strip().split("\n")[-1])
+        except IndexError:
+            pass
+        if raise_errors:
+            raise Exception(msg)
+        else:
+            return False, msg
+
+
+"""
+Following code is not working correctly - ffmpeg parameters are wrong. 
+"""
+"""
+def check_if_audio_is_valid_stream(stream_url, raise_errors=True):
+    audio, _ = (
+        ffmpeg
+            .input(stream_url, t=2)
+            .output('pipe:', f="adts", acodec='copy')
+            .run(capture_stdout=False, capture_stderr=False)
+    )
+    audio = io.BytesIO(audio)
+    sound = AudioSegment.from_file(audio, "aac")
+    play(sound)
+
+# check_if_audio_is_valid('rtsp://172.22.246.207/extron1')
+"""
+
+if __name__ == '__main__':
+    # print(check_frame_is_valid('rtsp://172.22.246.207/extron2'))
+    print(check_if_audio_is_valid('rtsp://172.22.246.207/extron1'))
--- a/backend/tools/scrape_rooms.py
+++ b/backend/tools/scrape_rooms.py
@@ -0,0 +1,60 @@
+from pprint import pprint
+
+import re
+import requests
+from bs4 import BeautifulSoup
+
+
+def scrape_rooms():
+    headers = {
+        'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36'}
+
+    room_url = "https://campus.kit.edu/live-stud/campus/all/roomgroup.asp?roomgroupcolumn1=H%F6r%2D%2FLehrsaal&tguid=0x1A35C3A1490748388EBEBA3943EFCDD5"
+    page = requests.get(room_url, headers=headers)
+    # soup = BeautifulSoup(page.content, 'html5lib')
+    soup = BeautifulSoup(page.content, 'html.parser')
+
+    # pprint(page.content)
+
+    # pprint(soup.prettify())
+
+    idx = 0
+
+    rooms = []
+
+    re_string = r"^(\d\d.\d\d)?\s(.*)"
+    re_exp = re.compile(re_string)
+
+    for tr in soup.find_all('tr'):
+        idx += 1
+        if idx == 1:  # skip first row
+            continue
+        a_name = tr.find_all('a')[0].string
+        a_building = tr.find_all('a')[3].string
+        match = re_exp.match(a_name)
+        if match is not None:
+            building_number, name = re_exp.match(a_name).groups()
+        else:
+            name = a_name
+            building_number = None
+
+        match = re_exp.match(a_building)
+        if match is not None:
+            building_number, building_name = re_exp.match(a_building).groups()
+        else:
+            building_name = a_name
+            building_number = None
+
+        room = {'name': name,
+                'room_number': tr.find_all('a')[1].string if tr.find_all('a')[0].string != "None" else tr.find_all('a')[
+                    1].string,
+                'building_name': building_name,
+                'building_number': building_number}
+
+        rooms.append(room)
+
+    return rooms
+
+
+if __name__ == '__main__':
+    pprint(scrape_rooms())
--- a/backend/tools/send_mail.py
+++ b/backend/tools/send_mail.py
@@ -0,0 +1,60 @@
+import smtplib
+import traceback
+from email.message import EmailMessage
+from logging.handlers import SMTPHandler
+from typing import List, Union
+
+from backend import Config
+
+
+def send_mail(subject: str, msg_body: str, to_mail: List, from_mail: str = Config.FROM_MAIL):
+    subject = subject.strip().replace("\r", "").split("\n")[0]  # remove breaks resp. cut after line break
+    try:
+        msg = EmailMessage()
+        msg.set_content(msg_body)
+        msg["Subject"] = subject
+        msg["From"] = from_mail
+        msg["To"] = to_mail
+        s = smtplib.SMTP(Config.SMTP_SERVER)
+        s.send_message(msg)
+        s.quit()
+    except Exception as e:
+        print(
+            "Could not send E-Mail (Exception: {})".format(str(e)))
+
+
+def send_error_mail(message_or_exception: Union[str, Exception], subject: str = None,
+                    subject_prefix: str = "[LRC] Error: ",
+                    receiver_mail_addresses=Config.ERROR_E_MAIL_TO):
+    if isinstance(message_or_exception, Exception):
+        if subject is None:
+            subject = subject_prefix + str(type(message_or_exception))
+        else:
+            subject = subject_prefix + subject
+        msg_body = str(type(message_or_exception)) + ": " + str(message_or_exception) + "\n\n" + traceback.format_exc()
+    else:
+        if subject is None:
+            subject = str(message_or_exception)
+        else:
+            subject = subject_prefix + subject
+        msg_body = str(message_or_exception)
+
+    send_mail(subject, msg_body, receiver_mail_addresses)
+
+
+def send_warning_mail():
+    pass
+
+
+def get_smtp_default_handler(receiver_mail_addresses=Config.ADMIN_E_MAIL_TO, subject: str = None,
+                    subject_prefix: str = "[LRC] Log: "):
+
+    subject = subject if subject.startswith("[LRC]") else subject_prefix + subject
+    return SMTPHandler(Config.SMTP_SERVER, Config.FROM_MAIL, receiver_mail_addresses, subject)
+
+
+def get_smtp_error_handler(receiver_mail_addresses=Config.ERROR_E_MAIL_TO, subject: str = None,
+                    subject_prefix: str = "[LRC] Error: "):
+
+    subject = subject if subject.startswith("[LRC]") else subject_prefix + subject
+    return SMTPHandler(Config.SMTP_SERVER, Config.FROM_MAIL, receiver_mail_addresses, subject)
--- a/backend/websocket/init.py
+++ b/backend/websocket/init.py
@@ -0,0 +1,4 @@
+#  Copyright (c) 2019. Tobias Kurze
+
+import backend.websocket.handlers
+
--- a/backend/websocket/base.py
+++ b/backend/websocket/base.py
@@ -0,0 +1,92 @@
+import logging
+import threading
+
+from flask_jwt_extended import verify_jwt_in_request, get_current_user, jwt_required, get_jwt_claims, get_jwt_identity
+from flask_login import current_user
+from flask_socketio import SocketIO, emit
+from jwt import ExpiredSignatureError
+
+from backend import app
+
+logger = logging.getLogger("lrc.websocket")
+
+async_mode = 'threading'  # set to traditional python threading model
+# async_mode = None
+socketio = SocketIO(app, cors_allowed_origins="*", async_mode=async_mode)
+
+
+class WebSocketBase:
+    def __init__(self, flask_app_context=None):
+        if flask_app_context is None:
+            self.flask_app_context = app
+            self.socket_thread = None
+
+    def start_websocket_in_thread(self, host=None, port=None, debug=None):
+        self.socket_thread = threading.Thread(
+            target=self.start_websocket,
+            args=(host, port, debug))
+        self.socket_thread.start()
+        return self.socket_thread
+
+    def start_websocket(self, host=None, port=None, debug=None):
+        if debug is None:
+            debug = self.flask_app_context.debug
+        socketio.run(self.flask_app_context, host=host, port=port, debug=debug)
+
+    def send_test_msg(self):
+        socketio.emit('test', "tolle nachricht")
+
+    @staticmethod
+    @socketio.on('connect')
+    def connect_handler():
+        logger.debug("new connection...")
+        try:
+            print(verify_jwt_in_request())
+            print(get_jwt_identity())
+        except ExpiredSignatureError:
+            logger.info("user is not authenticated! Signature expired.")
+        except Exception as e:
+            logger.info("user is not authenticated!")
+            print(str(e))
+            print(type(e))
+            print("not allowed!!")
+            return False  # not allowed here
+        logger.debug("user is authenticated")
+        print("allowed!")
+        return True
+
+    @staticmethod
+    @socketio.on('message')
+    def handle_message(message):
+        print('received message: ' + message)
+
+    @staticmethod
+    @socketio.on('json')
+    def handle_json(json):
+        print('received json: ' + str(json))
+
+    @staticmethod
+    def _request_request_recorder_status_update():
+        pass
+
+    @staticmethod
+    def _test_on_msg_func():
+        pass
+
+    @staticmethod
+    @socketio.on('update_message_test_blabla')
+    def handle_msg(msg=None):
+        print('received msg: ' + str(msg))
+        socketio.on_event('my event', WebSocketBase._test_on_msg_func, namespace='/')
+
+    @staticmethod
+    @socketio.on_error()
+    def handle_error(error):
+        logger.error(error)
+        print(error)
+
+
+if __name__ == '__main__':
+    wsb = WebSocketBase()
+    # wsb.start_websocket_in_thread(debug=True)
+    wsb.start_websocket(debug=True)
--- a/backend/websocket/handlers.py
+++ b/backend/websocket/handlers.py
@@ -0,0 +1,50 @@
+import json
+import logging
+
+from backend.cron import async_cron_recorder_checker
+from backend.websocket.base import socketio
+
+logger = logging.getLogger("lrc.websocket.handlers")
+
+recorder_state_checker = async_cron_recorder_checker
+
+
+@socketio.on('request_recorder_state_updates')
+def handle_request_recorder_state_updates_msg(recorder_id=None):
+    if recorder_id is None:
+        logger.warning("No recorder_id communicated, ignoring!")
+        return
+    logger.info("Adding recorder {} to state checker".format(recorder_id))
+    recorder_state_checker.add_object_to_state_check(recorder_id)
+
+
+@socketio.on('force_recorder_state_update')
+def handle_force_recorder_state_update_msg(recorder_id=None):
+    if recorder_id is None:
+        logger.warning("No recorder_id communicated, ignoring!")
+        return
+
+    current_states = recorder_state_checker.get_current_state()
+    for key in current_states:
+        state = current_states[key]
+        if state.get('id', None) == recorder_id:
+            logger.debug("Sending state to: {}".format(
+                'recorder_state_update_{}'.format(recorder_id)))
+            socketio.emit('recorder_state_update_{}'.format(recorder_id),
+                          json.dumps(state))
+            return
+    logger.warning("Can't force update, no state found for recorder id {}.".format(recorder_id))
+
+
+def send_state_update_to_recorders(recorder_results_dict: dict):
+    if len(recorder_results_dict) <= 0:
+        logger.debug("Sending state of recorders via web socket... => nothing to send!")
+        return
+
+    logger.debug("Sending state of recorders via web socket...")
+    for recorder_id in recorder_results_dict:
+        print(recorder_results_dict[recorder_id])
+        logger.debug("Sending state to: {}".format(
+            'recorder_state_update_{}'.format(recorder_results_dict[recorder_id].get('id'))))
+        socketio.emit('recorder_state_update_{}'.format(recorder_results_dict[recorder_id].get('id')),
+                      json.dumps(recorder_results_dict[recorder_id]))
--- a/backend/websocket/websocket_base_testing.py
+++ b/backend/websocket/websocket_base_testing.py
@@ -0,0 +1,127 @@
+#  Copyright (c) 2019. Tobias Kurze
+
+import logging
+import threading
+import time
+
+from flask import Flask, request
+from flask_socketio import SocketIO, emit
+
+from backend import app
+
+logging.basicConfig()
+
+app = Flask(__name__)
+app.config['SECRET_KEY'] = 'secret!'
+
+async_mode = 'threading'
+async_mode = None
+socketio = SocketIO(app, cors_allowed_origins="*", async_mode=async_mode)
+thread = None
+thread_lock = threading.Lock()
+
+clients = []
+
+
+def background_thread():
+    """Example of how to send server generated events to clients."""
+    count = 0
+    while True:
+        socketio.sleep(3)
+        print("server_event ")
+        count += 1
+        socketio.emit('server_event',
+                      {'data': 'Server generated event', 'count': count},
+                      )
+
+
+def ack():
+    print('message was received!')
+
+
+@socketio.on('my_event')
+def test_message(message: dict):
+    print("received msg!")
+    print(message)
+    if isinstance(message, str):
+        emit('my_response', 'tolle Antwort! (got only a string!)', callback=ack)
+    else:
+        emit('my_response', {'data': message['data']}, callback=ack)
+
+
+@socketio.on('my broadcast event', namespace='/')
+def test_message(message):
+    emit('my response', {'data': message['data']}, broadcast=True)
+
+
+@socketio.on('connect')
+def test_connect():
+    print("connected")
+    global thread
+    with thread_lock:
+        if thread is None:
+            thread = socketio.start_background_task(background_thread)
+    emit('connect', "You are connected!")
+
+
+@socketio.on('disconnect', namespace='/')
+def test_disconnect():
+    print('Client disconnected')
+
+
+@socketio.on_error()
+def handle_error(error):
+    print(error)
+
+
+def start_in_thread():
+    socket_thread = threading.Thread(target=lambda appl, host, port: socketio.run(app=appl, host=host, port=port),
+                                     args=(app, "localhost", 5000))
+    socket_thread.start()
+    return socket_thread
+
+
+@app.route("/")
+def root():
+    return """<script src="//cdnjs.cloudflare.com/ajax/libs/socket.io/2.2.0/socket.io.js" integrity="sha256-yr4fRk/GU1ehYJPAs8P4JlTgu0Hdsp4ZKrx8bDEDC3I=" crossorigin="anonymous"></script>
+<script type="text/javascript" charset="utf-8">
+    var socket = io();
+    socket.on('connect', function() {
+        console.log("connected!");
+        socket.emit('my_event', {data: 'I am connected!'});
+    });
+    socket.on('my_response', function(resp) {
+        console.log('got response:');
+        console.log(resp);
+    });   
+</script>"""
+
+
+if __name__ == '__main__':
+    print("running main")
+    # socketio.init_app(app, cors_allowed_origins="*")
+
+    #while len(clients) <= 0:
+    #    time.sleep(1)
+
+    #while True:
+    #    time.sleep(2)
+    #    print("sending message...")
+    #    socketio.send("lala")
+    #    print("send lala")
+    #    print(clients[0])
+    #    socketio.emit("server_event", {'msg': "tolle nachricht"}, room=clients[0])
+    #    with app.test_request_context('/'):
+    #        socketio.emit('server_event', "You!: server_event", namespace="/")
+    #    print("send bla")
+
+
+    #socketio.run(app, host="localhost", port=5000, debug=True)
+    start_in_thread()
+    while True:
+        time.sleep(2)
+        print("still running! :)")
+    # socketio.run(app, debug=True)
+    # ENDE
+
+    # t.join()
--- a/backend/websocket/websocket_test_client.py
+++ b/backend/websocket/websocket_test_client.py
@@ -0,0 +1,31 @@
+#  Copyright (c) 2019. Tobias Kurze
+
+import logging
+import threading
+import time
+from socketIO_client import SocketIO, LoggingNamespace
+
+logging.basicConfig()
+
+
+token = "# replace with: JWT Access Token"
+#print(token)
+
+print("params")
+#socketIO = SocketIO('127.0.0.1', 5443, params={'jwt': '{}'.format(token)})
+print("headers")
+#socketIO = SocketIO('127.0.0.1', 5443, headers={'Authorization': 'Bearer {}'.format(token)})
+print("cookies")
+socketIO = SocketIO('127.0.0.1', 5443, cookies={'access_token_cookie': '{}'.format(token)})
+
+#socketio = SocketIO(message_queue="redis://")
+socketio = SocketIO('127.0.0.1', 5443)
+
+#socketio.run(app, host="localhost", port=5000)
+#socketio.init_app(app, host="localhost", port=5000, cors_allowed_origins="*", )
+#socketio.init_app(app, host="localhost", port=5000, cors_allowed_origins="*", )
+
+socketio.emit("server_event", {'data': 42, 'msg': 'toll'})
+print("sent message!")
+socketio.emit({'data': 42, 'msg': 'toll'})
+print("sent message 2!")
--- a/models/user_model.py
+++ b/models/user_model.py
@@ -1,318 +0,0 @@
-# -*- coding: utf-8 -*-
-"""
-Example user model and related models
-"""
-
-from backend import db, app
-from backend.models.post_model import Post
-from backend.models.example_model import ExampleDataItem
-import re
-import jwt
-from flask_login import UserMixin
-from sqlalchemy import or_
-from datetime import datetime, timedelta
-from passlib.hash import sha256_crypt
-from hashlib import md5
-
-followers = db.Table('followers',
-                     db.Column('follower_id', db.Integer, db.ForeignKey('user.id')),
-                     db.Column('followed_id', db.Integer, db.ForeignKey('user.id'))
-                     )
-
-acquaintances = db.Table('acquaintances',
-                         db.Column('me_id', db.Integer, db.ForeignKey('user.id')),
-                         db.Column('acquaintance_id', db.Integer, db.ForeignKey('user.id'))
-                         )
-
-
-class User(UserMixin, db.Model):
-    """
-    Example user model representation.
-    """
-    id = db.Column(db.Integer, primary_key=True)
-    social_id = db.Column(db.String(64), nullable=True, unique=True)
-    nickname = db.Column(db.String(64), index=True, unique=True)
-    first_name = db.Column(db.String(64), index=True, nullable=True)
-    last_name = db.Column(db.String(64), index=True, nullable=True)
-    email = db.Column(db.String(120), nullable=False, index=True, unique=True)
-    lang = db.Column(db.String(16), index=False, unique=False)
-    timezone = db.Column(db.String(32), index=False, unique=False)
-    posts = db.relationship('Post', backref='author', lazy='dynamic')
-    example_data_item = db.relationship('ExampleDataItem', backref='owner', lazy='dynamic')
-    about_me = db.Column(db.String(140))
-    role = db.Column(db.String(64))
-    password = db.Column(db.String(255), nullable=True)
-    registered_on = db.Column(db.DateTime, nullable=False, default=datetime.utcnow())
-    last_seen = db.Column(db.DateTime, default=datetime.utcnow())
-    jwt_exp_delta_seconds = db.Column(db.Integer, nullable=True)
-    acquainted = db.relationship('User',
-                                 secondary=acquaintances,
-                                 primaryjoin=(acquaintances.c.me_id == id),
-                                 secondaryjoin=(acquaintances.c.acquaintance_id == id),
-                                 backref=db.backref('acquaintances', lazy='dynamic'),
-                                 lazy='dynamic')
-    followed = db.relationship('User',
-                               secondary=followers,
-                               primaryjoin=(followers.c.follower_id == id),
-                               secondaryjoin=(followers.c.followed_id == id),
-                               backref=db.backref('followers', lazy='dynamic'),
-                               lazy='dynamic')
-
-    @staticmethod
-    def get_by_identifier(identifier):
-        """
-        Find user by identifier, which might be the nickname or the e-mail address.
-        :param identifier:
-        :return:
-        """
-        return User.query.filter(or_(User.nickname == identifier,
-                                     User.email == identifier)).first()
-
-    @staticmethod
-    def get_all():
-        """
-        Return all users
-        :return:
-        """
-        return User.query.all()
-
-    @staticmethod
-    def make_unique_nickname(nickname):
-        """
-        Add suffix (counter) to nickname in order to get a unique nickname.
-        :param nickname:
-        :return:
-        """
-        if User.query.filter_by(nickname=nickname).first() is None:
-            return nickname
-        version = 2
-        while True:
-            new_nickname = nickname + str(version)
-            if User.query.filter_by(nickname=new_nickname).first() is None:
-                break
-            version += 1
-        return new_nickname
-
-    @staticmethod
-    def make_valid_nickname(nickname):
-        """
-        Replaces certain characters (except a-zA-Z0-9_.) in nickname with blancs.
-        :param nickname:
-        :return:
-        """
-        return re.sub('[^a-zA-Z0-9_.]', '', nickname)
-
-    @property
-    def is_authenticated(self):
-        """
-        Returns true if user is authenticated.
-        :return:
-        """
-        # TODO: implement correctly
-        return True
-
-    @property
-    def is_active(self):
-        """
-        Returns true if user is active.
-        :return:
-        """
-        # TODO: implement correctly
-        return True
-
-    @property
-    def is_anonymous(self):
-        """
-        Returns true if user is anonymous.
-        :return:
-        """
-        # TODO: implement correctly
-        return False
-
-    @staticmethod
-    def decode_auth_token(auth_token):
-        """
-        Decodes the auth token
-        :param auth_token:
-        :return: integer|string
-        """
-        try:
-            payload = jwt.decode(auth_token, app.config.get('SECRET_KEY'))
-            is_blacklisted_token = BlacklistToken.check_blacklist(auth_token)
-            if is_blacklisted_token:
-                return 'Token blacklisted. Please log in again.'
-            else:
-                return payload['sub']
-        except jwt.ExpiredSignatureError:
-            return 'Signature expired. Please log in again.'
-        except jwt.InvalidTokenError:
-            return 'Invalid token. Please log in again.'
-
-    def encode_auth_token(self):
-        """
-        Generates the Auth Token
-        :return: string
-        """
-        try:
-            payload = {
-                'exp': datetime.utcnow() + timedelta(days=0, hours=3, seconds=5),
-                'iat': datetime.utcnow(),
-                'sub': self.id
-            }
-            return jwt.encode(
-                payload,
-                app.config.get('SECRET_KEY'),
-                algorithm='HS256'
-            )
-        except Exception as e:
-            return e
-
-    def set_password(self, password):
-        """
-        SHA256 encrypts the given password and sets it on the user.
-        :param password:
-        :return:
-        """
-        self.password = sha256_crypt.encrypt(password)
-
-    def verify_password(self, password):
-        """
-        Verifies that the given password matches the SHA256 encrypted password stored on the user.
-        :param password:
-        :return:
-        """
-        return sha256_crypt.verify(password, self.password)
-
-    def get_id(self):
-        """
-        Returns the ID of the user.
-        :return:
-        """
-        try:
-            # noinspection PyUnresolvedReferences
-            return unicode(self.id)  # python 2
-        except NameError:
-            return str(self.id)  # python 3
-
-    def avatar(self, size):
-        """
-        Returns an avatar URL.
-        :param size:
-        :return:
-        """
-        return 'https://s.gravatar.com/avatar/%s?d=mm&s=%d' % (md5(self.email.encode('utf-8')).hexdigest(), size)
-
-    def acquaint(self, user):
-        """
-        Adds an acquaintance to the user object.
-        :param user:
-        :return:
-        """
-        if not self.is_acquainted(user):
-            self.acquainted.append(user)
-            return self
-
-    def unacquaint(self, user):
-        """
-        Removes the user from the list of acquaintances.
-        :param user:
-        :return:
-        """
-        if self.is_acquainted(user):
-            self.acquainted.remove(user)
-            return self
-
-    def is_acquainted(self, user):
-        """
-        Check if the provided user is an acquaintance.
-        :param user:
-        :return:
-        """
-        return self.acquainted.filter(acquaintances.c.acquaintance_id == user.id).count() > 0
-
-    def get_acquaintances(self):
-        """
-        Returns the list of acquaintances.
-        :return:
-        """
-        return User.query.join(acquaintances, (acquaintances.c.acquaintance_id == User.id)).filter(
-            acquaintances.c.me_id == self.id).order_by(User.nickname.desc())
-
-    def shared_example_data_items(self):
-        """
-        Returns a list of the shared data items.
-        :return:
-        """
-        return ExampleDataItem.query.join(acquaintances,
-                                          (acquaintances.c.acquaintance_id == ExampleDataItem.user_id)).filter(
-            acquaintances.c.me_id == self.id).order_by(ExampleDataItem.timestamp.desc())
-
-    def follow(self, user):
-        """
-        Add user to list of followers.
-        :param user:
-        :return:
-        """
-        if not self.is_following(user):
-            self.followed.append(user)
-            return self
-
-    def unfollow(self, user):
-        """
-        Remove user from the list of followers.
-        :param user:
-        :return:
-        """
-        if self.is_following(user):
-            self.followed.remove(user)
-            return self
-
-    def is_following(self, user):
-        """
-        Checks if specified user is a follower.
-        :param user:
-        :return:
-        """
-        return self.followed.filter(followers.c.followed_id == user.id).count() > 0
-
-    def followed_posts(self):
-        """
-        Returns list of followed posts.
-        :return:
-        """
-        return Post.query.join(followers, (followers.c.followed_id == Post.user_id)).filter(
-            followers.c.follower_id == self.id).order_by(Post.timestamp.desc())
-
-    def __repr__(self):
-        return '<User %r>' % self.nickname
-
-
-class BlacklistToken(db.Model):
-    """
-    Token Model for storing JWT tokens
-    """
-    __tablename__ = 'blacklist_tokens'
-
-    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
-    token = db.Column(db.String(500), unique=True, nullable=False)
-    blacklisted_on = db.Column(db.DateTime, nullable=False)
-
-    def __init__(self, token):
-        self.token = token
-        self.blacklisted_on = datetime.now()
-
-    def __repr__(self):
-        return '<id: token: {}'.format(self.token)
-
-    @staticmethod
-    def check_blacklist(auth_token):
-        """
-        check whether auth token has been blacklisted
-        :param auth_token:
-        :return:
-        """
-        res = BlacklistToken.query.filter_by(token=str(auth_token)).first()
-        if res:
-            return True
-        else:
-            return False
--- a/serve_frontend.py
+++ b/serve_frontend.py
@@ -1,30 +0,0 @@
-#!/usr/bin/env python
-
-# -*- coding: utf-8 -*-
-
-import os
-from flask import render_template, send_from_directory, Blueprint
-
-fe_path = os.path.join(os.getcwd(), "frontend", "dist")
-fe_bp = Blueprint('frontend', __name__, url_prefix='/', template_folder=os.path.join(fe_path, ""))
-
-
-@fe_bp.route('/js/<path:path>')
-def send_js(path):
-    return send_from_directory(os.path.join(fe_path, "js"), path)
-
-
-@fe_bp.route('/css/<path:path>')
-def send_css(path):
-    return send_from_directory(os.path.join(fe_path, "css"), path)
-
-
-@fe_bp.route('/img/<path:path>')
-def send_img(path):
-    return send_from_directory(os.path.join(fe_path, "img"), path)
-
-
-@fe_bp.route('/', defaults={'path': ''})
-@fe_bp.route('/<path:path>')
-def catch_all(path):
-    return render_template("index.html")
Author	SHA1	Message	Date
Tobias Kurze	419056bf03	using python 3.6 (as requirement as well on production)	2020-03-12 11:38:19 +01:00
tobias.kurze	26251ed8e7	Add README.md	2020-03-12 11:28:39 +01:00
Tobias Kurze	f181e4a785	further advanced state api and stream checks	2020-02-25 17:00:01 +01:00
Tobias Kurze	1d011af64b	added state api	2020-02-24 16:00:41 +01:00
Tobias Kurze	6ba38cd42d	removed flask-restplus and replaced with flask-restx	2020-02-24 09:26:47 +01:00
Tobias Kurze	1745f56ac7	added stream sanity checks (sound, singe color)	2020-02-21 17:10:14 +01:00
Tobias Kurze	6971b4b618	added stream checks	2020-02-21 07:22:26 +01:00
Tobias Kurze	bb4db25dcd	code to call recorder functions from frointend	2019-12-12 18:44:07 +01:00
Tobias Kurze	da200f95b8	working websocket communication for recorder states	2019-12-11 08:31:42 +01:00
Tobias Kurze	190f728eb7	changed a lot regarding rec state, etc.	2019-12-03 16:05:02 +01:00
Tobias Kurze	a709dbcaef	added permissions api and websocket stuff	2019-11-28 19:39:53 +01:00
Tobias	c4b54357f7	automatically adding recorders, models and rooms and association of those	2019-11-22 14:26:16 +01:00
Tobias Kurze	7700b4381f	now rooms, recorders and recorder models get initialized in DB	2019-11-20 16:19:59 +01:00
Tobias Kurze	60ff5bdeaf	added code to initialize db with models and recodres	2019-11-20 12:41:05 +01:00
Tobias Kurze	bc1347fe99	changed pw in recorders.jso	2019-11-14 15:40:57 +01:00
Tobias Kurze	9ef9d98132	added logging to smp adapter	2019-11-14 15:19:44 +01:00
Tobias Kurze	bab6403f91	changed thread pool code again	2019-11-14 15:08:06 +01:00
Tobias Kurze	692649e08f	changed thread pool code again	2019-11-14 15:05:06 +01:00
Tobias Kurze	6f1e01781a	changed thread pool code again	2019-11-14 15:02:20 +01:00
Tobias Kurze	7224038e64	modified threadpool run to use timeout	2019-11-14 14:56:55 +01:00
Tobias Kurze	c96cdfc6e1	fixed bug in smp adapter	2019-11-14 14:39:27 +01:00
Tobias Kurze	c3d8a1e91a	fixed bug in smp adapter	2019-11-14 14:29:12 +01:00
Tobias Kurze	b214d161bf	slightly modified smp adapter for testing	2019-11-14 14:23:19 +01:00
Tobias Kurze	e19ce060d8	exception decorator and mail send for errors and changes to rec state checker	2019-11-14 14:15:36 +01:00
Tobias Kurze	6081486a35	using git-crypt instead of manual encrypton filters	2019-11-13 13:04:18 +01:00
Tobias Kurze	2da856dd36	using git-crypt instead of manual encrypton filters	2019-11-13 12:59:09 +01:00
Tobias Kurze	872e531ef5	added logging conf and now checking recording status with simple script ; notifications are missing	2019-11-13 08:19:39 +01:00
Tobias Kurze	4563e16137	moved creds to config	2019-11-12 12:43:45 +01:00
Tobias Kurze	8b05bb694f	added excel->json recorder source generation script	2019-11-12 12:32:49 +01:00
tobias	5d731c9fba	moved some models added cron and websocket base class	2019-10-31 16:13:02 +01:00
Tobias Kurze	36c889956f	added websocket test flies	2019-10-30 11:54:53 +01:00
Tobias Kurze	a408fd3b4c	added ws base code	2019-10-25 15:59:41 +02:00
Tobias Kurze	32c2674210	added code for saving config (might not be complete	2019-10-25 13:49:41 +02:00
tobias	d61c395d2c	added access control model and more stuff around access mgmt	2019-10-23 16:33:24 +02:00
tobias	6b4f7c8118	moved everything to a new module called backend	2019-10-23 15:00:33 +02:00
Tobias Kurze	310d5f4820	using current user in some placesi	2019-08-15 14:32:04 +02:00
Tobias Kurze	9ab0d43f43	profile and other stuff	2019-08-14 16:38:03 +02:00
Tobias Kurze	859a5d880a	working on control	2019-08-13 16:30:45 +02:00
Tobias Kurze	f70cbdc463	now scraping rooms from capmus mgmt	2019-08-13 15:29:37 +02:00
tobias	48505b76ea	fixed (circumvented) bug related to hybrid_property and parameter serialization	2019-08-08 20:31:08 +02:00
tobias	c0e56cf40d	now scanning model difinietons and updating db entries	2019-08-08 16:38:15 +02:00
Tobias Kurze	123eb65f8e	some changes to virtual command	2019-08-05 15:28:39 +02:00
Tobias Kurze	186614bc4a	added virtual commands model	2019-08-05 13:41:12 +02:00
Tobias Kurze	51536766bf	using reflection to get models	2019-08-02 16:09:39 +02:00
Tobias Kurze	3c6b6ba099	finished smp extron telnet adapter (more or less)	2019-07-04 13:29:44 +02:00
Tobias	4d01f7025b	added more smp >API< functions	2019-07-03 16:09:10 +02:00
Tobias Kurze	3a7d8dbdd4	just added comment for TODO	2019-07-03 13:51:51 +02:00
Tobias Kurze	88f5c3023d	added lot of functs for SMP	2019-06-21 16:32:08 +02:00
Tobias Kurze	4485dea583	added recorder command backend	2019-06-21 11:04:12 +02:00
Tobias	70df74cecf	updated recorder model	2019-05-03 18:40:43 +02:00
Tobias Kurze	fad2238b75	added ports to api model	2019-05-03 15:52:52 +02:00
Tobias Kurze	295aadfaeb	fixed and extended apis	2019-04-26 15:34:23 +02:00
Tobias	07d01304be	added room and recorder api and added length check (for sqlite)	2019-04-26 09:42:52 +02:00
Tobias Kurze	254637bfa9	some migrations; commit just to be on 'nice' state	2019-04-17 09:07:24 +02:00
Tobias	3ecc8e0955	some changes to auth and group api	2019-04-15 14:14:42 +02:00
Tobias	cbc269edf2	removed old dB code and continued on group and user mgmt	2019-04-11 16:18:46 +02:00
Tobias Kurze	2451a56403	added / implemented group API	2019-04-10 15:11:21 +02:00
Tobias Kurze	f0783d97c8	changes to auth and user API	2019-04-05 16:21:24 +02:00
Tobias	8b7b2f489c	added user and group API and models	2019-04-04 16:05:36 +02:00
Tobias	cfa12717e0	added toJSON func	2019-04-02 16:58:59 +02:00
Tobias Kurze	8cf8632c8c	added db migrations and group support, still problems with json serialization	2019-04-02 16:10:46 +02:00
Tobias	024f063bea	better separation between api and frontend login	2019-04-02 10:47:53 +02:00
Tobias Kurze	ed57dc2720	creating users from oidc id token	2019-03-26 16:17:18 +01:00
Tobias Kurze	cad27733f0	oicd now working	2019-03-26 14:58:37 +01:00
Tobias Kurze	bc50e23a22	improved/fixed serve_frontend.py to work from different base paths (change required for wsgi)	2019-03-26 11:57:22 +01:00
Tobias Kurze	ebc34e396d	slightly changed user model (sort of fix)	2019-03-22 16:38:42 +01:00
Tobias	0469b8dbb5	added a lot of auth code	2019-03-21 16:17:25 +01:00
Tobias Kurze	bef3c6dc9b	added authentication API	2019-03-19 16:34:05 +01:00
Tobias Kurze	9d9c58d268	added OpenID Connect support	2019-03-19 15:29:26 +01:00
Tobias	bd9b6c61d3	working db and tests Nr2	2019-03-14 17:14:05 +01:00
Tobias	1c8cb55b46	working db and tests	2019-03-14 17:13:02 +01:00