added recorder command backend

recorder_adapters/extron_smp.py

@@ -0,0 +1,43 @@
+import getpass
+import sys
+from abc import ABC, abstractmethod
+from backend.recorder_adapters import telnetlib, TelnetAdapter
+
+# 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"
+
+
+class SMP(TelnetAdapter):
+    def __init__(self, address, admin_password):
+        super().__init__(address)
+        self.admin_pw = admin_password
+
+    def login(self):
+        self.tn = telnetlib.Telnet(HOST)
+        self.tn.read_until("\r\nPassword:")
+        # password = getpass.getpass()
+        password = self.admin_pw
+        self.tn.write(password + "\n\r")
+
+        if not self.tn.assert_string_in_output("Login Administrator")[0]:
+            print("WRONG (admin) password!! Exiting!")
+            self.tn = None
+            raise Exception("Could not login as administrator with given pw!")
+        print("OK, we have admin rights!")
+
+    def get_version(self):
+        self.tn.write("1Q\n")
+
+        # print_tn(read_line(tn))
+        return TelnetAdapter.get_response_str(self.tn.read_until_non_empty_line())
+
+
+smp = SMP(HOST, PW)
+print(smp)
+smp.login()
+print(smp.get_version())