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Added browser detection

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root 2017-09-05 19:38:33 +00:00
parent 9b754e8794
commit f816747068
1 changed files with 29 additions and 13 deletions
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32
checkmyip.py
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@ -161,18 +161,18 @@ def listener(port, talker):
##### Telnet responder method. Is run in own thread for each telnet query #####
def telnet_talker(client, valdict):
valdict.update({"proto": "telnet"}) # Add the protocol to the value dict
def telnet_talker(client, valdict, proto="telnet"):
valdict.update({"proto": proto}) # Add the protocol to the value dict
log(j2format(j2log, valdict)) # Log the query to the console and logfile
client.send(j2format(j2send, valdict)) # Send the query response
client.close() # Close the channel
##### SSH responder method. Gets run in own thread for each SSH query #####
def ssh_talker(client, valdict):
def ssh_talker(client, valdict, proto="ssh"):
def makefile(): # A hack to make Cisco SSH sessions work properly
chan.makefile('rU').readline().strip('\r\n')
valdict.update({"proto": "ssh"})
valdict.update({"proto": proto})
log(j2format(j2log, valdict))
t = paramiko.Transport(client, gss_kex=True)
t.set_gss_host(socket.getfqdn(""))
@ -192,9 +192,23 @@ def ssh_talker(client, valdict):
##### HTTP responder method. Gets run in own thread for each HTTP query #####
def http_talker(client, valdict):
valdict.update({"proto": "http"})
##### Automatically detects if client is a browser or a telnet client #####
def http_talker(client, valdict, proto="http"):
time.sleep(.1) # Sleep to allow the client to send some data
client.setblocking(0) # Set the socket recv as non-blocking
browser = False # Is the client using a browser?
try: # client.recv() will raise an error if the buffer is empty
data = client.recv(2048) # Recieve data from the buffer (if any)
print(data) # Print to stdout
browser = True # Set client browser to True
except: # If buffer was empty, then like a telnet client on TCP80
browser = False # Set client browser to False
if not browser: # If the client is not a browser
telnet_talker(client, valdict, "http-telnet") # Hand to telnet_talker
else: # If client is a browser
# Proceed with standard HTTP response (with headers)
log(j2format(j2log, valdict))
valdict.update({"proto": proto})
response_body_raw = j2format(j2send, valdict)
response_headers_raw = """HTTP/1.1 200 OK
Content-Length: %s
@ -206,13 +220,15 @@ Connection: close""" % str(len(response_body_raw)) # Response with headers
##### Server startup method. Starts a listener thread for each TCP port #####
def start():
talkers = {22: ssh_talker, 23: telnet_talker, 80: http_talker}
talkers = {22: ssh_talker, 23: telnet_talker,
80: http_talker} # Three listeners on different ports
for talker in talkers:
# Launch a thread for each listener
thread = threading.Thread(target=listener,
args=(talker, talkers[talker]))
thread.daemon = True
thread.start()
while True:
while True: # While loop to allow a CTRL-C interrupt when interactive
try:
time.sleep(1)
except KeyboardInterrupt: