forked from BSDCafe/checkmyip
279 lines
No EOL
10 KiB
Python
Executable file
279 lines
No EOL
10 KiB
Python
Executable file
#!/usr/bin/python
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##### CheckMyIP Server #####
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##### Written by John W Kerns #####
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##### http://blog.packetsar.com #####
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##### https://github.com/packetsar/checkmyip #####
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##### Inform version here #####
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version = "v1.0.0"
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##### Import python2 native modules #####
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import os
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import sys
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import time
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import socket
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import jinja2
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import paramiko
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import threading
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##### Jinja formatting for logging queries #####
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j2log = "Connection from: {{ ip }} ({{ port }}) ({{ proto }})"
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##### Jinja formatting for response queries #####
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j2send = """{
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"comment": "## Your IP Address is {{ ip }} ({{ port }}) ##",
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"family": "{{ family }}",
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"ip": "{{ ip }}",
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"port": "{{ port }}",
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"protocol": "{{ proto }}",
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"version": "%s",
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"website": "https://github.com/packetsar/checkmyip"
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}""" % version
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##### Handles all prnting to console and logging to the logfile #####
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class log_management:
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def __init__(self):
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self.logpath = "/etc/checkmyip/" # Log file directory path
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self.logfile = "/etc/checkmyip/checkmyip.log" # Log file full path
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self._publish_methods() # Publish the console and log methods to glob
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self.can_log = True # Variable used to check if we can log
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try: # Try to configure the SSH log file, create dir if fail
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paramiko.util.log_to_file('/etc/checkmyip/ssh.log')
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except IOError:
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self._create_log_dir()
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def _logger(self, data): # Logging method published to global as 'log'
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logdata = time.strftime("%Y-%m-%d %H:%M:%S") + ": " + data + "\n"
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if self.can_log:
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try: # Try to write to log, create log dir if fail
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f = open(self.logfile, 'a')
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f.write(logdata)
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f.close()
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except IOError:
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self._console("Unable to log to logfile %s. Creating log directory" % self.logfile)
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self.can_log = False
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self._create_log_dir()
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self._console(logdata)
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def _console(self, data, timestamp=False):
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if timestamp:
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logdata = time.strftime("%Y-%m-%d %H:%M:%S") + ": " + data + "\n"
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else:
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logdata = data
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print(logdata)
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def _publish_methods(self):
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global log
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global console
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log = self._logger # Global method used to write to the log file
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console = self._console # Global method used to write to the console
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def _create_log_dir(self): # Create the directory for logging
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os.system('mkdir -p ' + self.logpath)
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self._console("Logpath (%s) created" % self.logpath)
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self.can_log = True
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##### Creates a RSA key for use by paramiko #####
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class rsa_key:
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data = """-----BEGIN RSA PRIVATE KEY-----
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MIICWgIBAAKBgQDTj1bqB4WmayWNPB+8jVSYpZYk80Ujvj680pOTh2bORBjbIAyz
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oWGW+GUjzKxTiiPvVmxFgx5wdsFvF03v34lEVVhMpouqPAYQ15N37K/ir5XY+9m/
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d8ufMCkjeXsQkKqFbAlQcnWMCRnOoPHS3I4vi6hmnDDeeYTSRvfLbW0fhwIBIwKB
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gBIiOqZYaoqbeD9OS9z2K9KR2atlTxGxOJPXiP4ESqP3NVScWNwyZ3NXHpyrJLa0
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EbVtzsQhLn6rF+TzXnOlcipFvjsem3iYzCpuChfGQ6SovTcOjHV9z+hnpXvQ/fon
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soVRZY65wKnF7IAoUwTmJS9opqgrN6kRgCd3DASAMd1bAkEA96SBVWFt/fJBNJ9H
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tYnBKZGw0VeHOYmVYbvMSstssn8un+pQpUm9vlG/bp7Oxd/m+b9KWEh2xPfv6zqU
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avNwHwJBANqzGZa/EpzF4J8pGti7oIAPUIDGMtfIcmqNXVMckrmzQ2vTfqtkEZsA
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4rE1IERRyiJQx6EJsz21wJmGV9WJQ5kCQQDwkS0uXqVdFzgHO6S++tjmjYcxwr3g
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H0CoFYSgbddOT6miqRskOQF3DZVkJT3kyuBgU2zKygz52ukQZMqxCb1fAkASvuTv
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qfpH87Qq5kQhNKdbbwbmd2NxlNabazPijWuphGTdW0VfJdWfklyS2Kr+iqrs/5wV
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HhathJt636Eg7oIjAkA8ht3MQ+XSl9yIJIS8gVpbPxSw5OMfw0PjVE7tBdQruiSc
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nvuQES5C9BMHjF39LZiGH1iLQy7FgdHyoP+eodI7
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-----END RSA PRIVATE KEY-----
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"""
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def readlines(self): # For use by paramiko.RSAKey.from_private_key mthd
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return self.data.split("\n")
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def __call__(self): # Recursive method uses own object as arg when called
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return paramiko.RSAKey.from_private_key(self)
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##### Imports and modifies the ServerInterface module for use by paramiko #####
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class ssh_server (paramiko.ServerInterface):
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def __init__(self):
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self.event = threading.Event()
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def check_channel_request(self, kind, chanid):
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if kind == 'session':
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return paramiko.OPEN_SUCCEEDED
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return paramiko.OPEN_FAILED_ADMINISTRATIVELY_PROHIBITED
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def check_auth_none(self, username): # Auth none method left wide open
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return paramiko.AUTH_SUCCESSFUL
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def get_allowed_auths(self, username): # Give no auth options
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return 'none'
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def check_channel_shell_request(self, channel):
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self.event.set()
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return True
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def check_channel_pty_request(self, channel, term, width, height,
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pixelwidth, pixelheight, modes):
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return True
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##### Method to merge Jinja templates #####
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def j2format(j2tmp, valdict):
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template = jinja2.Template(j2tmp)
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return template.render(valdict).replace("\n", "\r\n")
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##### Cleans IP addresses coming from socket library #####
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def cleanip(addr):
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ip = addr[0]
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port = addr[1]
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family = "ipv6"
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if len(ip) > 6: # If this IP is not a super short v6 address
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if ip[:7] == "::ffff:": # If this is a prefixed IPv4 address
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ip = ip.replace("::ffff:", "") # Return the cleaned IP
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family = "ipv4"
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return (ip, port, family) # Return the uncleaned IP if not matched
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##### TCP listener methods. Gets used once for each listening port #####
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def listener(port, talker):
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listen_ip = ''
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listen_port = port
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buffer_size = 1024
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while True:
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sock = socket.socket(socket.AF_INET6, socket.SOCK_STREAM) # v6 family
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sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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sock.bind((listen_ip, listen_port))
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sock.listen(buffer_size)
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client, addr = sock.accept()
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ip, port, family = cleanip(addr) # Get all cleaned IP info
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valdict = {"ip": ip, "port": port, "family": family} # Put in dict
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thread = threading.Thread(target=talker, args=(client, valdict))
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thread.start() # Start talker thread to listen to port
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##### Telnet responder method. Is run in own thread for each telnet query #####
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def telnet_talker(client, valdict, proto="telnet"):
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valdict.update({"proto": proto}) # Add the protocol to the value dict
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log(j2format(j2log, valdict)) # Log the query to the console and logfile
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client.send(j2format(j2send, valdict)) # Send the query response
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client.close() # Close the channel
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##### SSH responder method. Gets run in own thread for each SSH query #####
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def ssh_talker(client, valdict, proto="ssh"):
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def makefile(): # A hack to make Cisco SSH sessions work properly
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chan.makefile('rU').readline().strip('\r\n')
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valdict.update({"proto": proto})
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log(j2format(j2log, valdict))
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t = paramiko.Transport(client, gss_kex=True)
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t.set_gss_host(socket.getfqdn(""))
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t.load_server_moduli()
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t.add_server_key(rsa_key()()) # RSA key object nested call
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server = ssh_server()
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t.start_server(server=server)
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chan = t.accept(20)
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if chan:
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server.event.wait(10)
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chan.send('%s' % j2format(j2send, valdict)) # Send the response
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thread = threading.Thread(target=makefile)
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thread.start() # Start hack in thread since it hangs indefinately
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time.sleep(1) # Wait a second
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chan.close() # And kill the SSH channel
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client.close() # And kill the session
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##### HTTP responder method. Gets run in own thread for each HTTP query #####
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##### Automatically detects if client is a browser or a telnet client #####
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def http_talker(client, valdict, proto="http"):
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time.sleep(.1) # Sleep to allow the client to send some data
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client.setblocking(0) # Set the socket recv as non-blocking
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browser = False # Is the client using a browser?
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try: # client.recv() will raise an error if the buffer is empty
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data = client.recv(2048) # Recieve data from the buffer (if any)
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print(data) # Print to stdout
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browser = True # Set client browser to True
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except: # If buffer was empty, then like a telnet client on TCP80
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browser = False # Set client browser to False
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if not browser: # If the client is not a browser
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telnet_talker(client, valdict, "http-telnet") # Hand to telnet_talker
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else: # If client is a browser
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# Proceed with standard HTTP response (with headers)
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log(j2format(j2log, valdict))
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valdict.update({"proto": proto})
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response_body_raw = j2format(j2send, valdict)
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response_headers_raw = """HTTP/1.1 200 OK
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Content-Length: %s
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Content-Type: application/json; encoding=utf8
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Connection: close""" % str(len(response_body_raw)) # Response with headers
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client.send(response_headers_raw + "\n\n" + response_body_raw)
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client.close()
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##### Server startup method. Starts a listener thread for each TCP port #####
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def start():
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talkers = {22: ssh_talker, 23: telnet_talker,
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80: http_talker} # Three listeners on different ports
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for talker in talkers:
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# Launch a thread for each listener
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thread = threading.Thread(target=listener,
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args=(talker, talkers[talker]))
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thread.daemon = True
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thread.start()
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while True: # While loop to allow a CTRL-C interrupt when interactive
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try:
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time.sleep(1)
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except KeyboardInterrupt:
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quit()
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##### Client class to be used to make API calls to CheckMyIP server #####
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class CheckMyIP_Client:
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def __init__(self):
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self._json = __import__('json') # Import the JSON library
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self._socket = __import__('socket') # Import the socket library
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self._raw_data = None # Initialize the _raw_data variable
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self._data = None # Initialize the _data variable
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self._af = "auto" # Set the IP address family type to "auto"
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self.server = "telnetmyip.com" # Set the default CheckMyIP server
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def get(self): # Primary method to run IP check
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if self._af == "auto": # If we are using an auto address family
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try: # Try using IPv6
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sock = self._socket.socket(self._socket.AF_INET6,
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self._socket.SOCK_STREAM)
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sock.connect((self.server, 23))
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except: # Fall back to IPv4 if IPv6 fails
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sock = self._socket.socket(self._socket.AF_INET,
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self._socket.SOCK_STREAM)
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sock.connect((self.server, 23))
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elif self._af == "ipv6": # If we are using the IPv6 address family
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sock = self._socket.socket(self._socket.AF_INET6,
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self._socket.SOCK_STREAM)
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sock.connect((self.server, 23))
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elif self._af == "ipv4": # If we are using the IPv4 address family
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sock = self._socket.socket(self._socket.AF_INET,
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self._socket.SOCK_STREAM)
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sock.connect((self.server, 23))
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self._raw_data = sock.recv(1024).decode()
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self._data = self._json.loads(self._raw_data) # Recieve data from the buffer
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sock.close() # Close the socket
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return self._data # Return the JSON data
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def set_family(self, family): # Method to set the IP address family
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allowed = ["auto", "ipv4", "ipv6"] # Allowed input values
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if family in allowed:
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self._af = family
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else:
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raise Exception("Allowed families are 'auto', 'ipv4', 'ipv6'")
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if __name__ == "__main__":
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logging = log_management() # Instantiate log class
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start() # Start the server |