change to python3 instead of explicit 3.6

net/devices/actiontec/ActionTec/Connector.py

@@ -0,0 +1,66 @@
+#!/usr/bin/env python3.6
+
+# stdlib
+import re
+import socket
+
+def CheckConnection(host, port):
+    # We favor socket over telnetlib's check because it has a little better
+    # handling of exceptions.
+    try:
+        port = int(port)  # just in case we were passed a str()
+    except ValueError:
+        raise ValueError('"{0}" is not a port number'.format(port))
+        # In case they're catching the exception...
+        return(False)
+    s = socket.socket()
+    try:
+        s.connect((host, port))
+    except Exception as e:
+        raise RuntimeError(('We were unable to successfully connect to ' +
+                            '"{0}:{1}": {2}').format(host, port, e))
+        return(False)
+    finally:
+        s.close()
+    return(True)
+
+def Login(host, port, ssl, user, password):
+    user_prompt = [re.compile('^\s*user(name)?\s*:?\s*'.encode('utf-8'),
+                              re.IGNORECASE)]
+    passwd_prompt = [re.compile('^\s*passw(or)d?\s*:?\s*'.encode('utf-8'),
+                                re.IGNORECASE)]
+    # Are there any other valid chars? Will need to experiment.
+    # How is this even set? The default is "Wireless Broadband Router".
+    # I think it can't be changed, at least via the Web GUI.
+    cmd_prompt = [re.compile('[-_a-z0-9\s]*>'.encode('utf-8'),
+                             re.IGNORECASE)]
+    ctx = None
+    ctxargs = {'host': host, 'port': port}
+    try:
+        if ssl:
+            try:
+                from ssltelnet import SslTelnet as telnet
+                ctxargs['force_ssl'] = True
+            except ImportError:
+                raise ImportError(('You have enabled SSL but do not have ' +
+                                   'the ssltelnet module installed. See ' +
+                                   'the README file, footnote [1].'))
+        else:
+            from telnetlib import Telnet as telnet
+        ctx = telnet(**ctxargs)
+        ctx.expect(user_prompt, timeout = 8)
+        ctx.write((user + '\n').encode('utf-8'))
+        ctx.expect(passwd_prompt, timeout = 8)
+        ctx.write((password + '\n').encode('utf-8'))
+        ctx.expect(cmd_prompt, timeout = 15)
+    except EOFError:
+        if ctx:
+            ctx.close()
+            ctx = None
+    except Exception as e:
+        raise RuntimeError(('We encountered an error when trying to connect:' +
+                            ' {0}').format(e))
+        if ctx:
+            ctx.close()
+            ctx = None
+    return(ctx)