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Python proxy, borrowed from http://code.google.com/p/python-proxy/source/browse/trunk/PythonProxy.py
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# | |
# <PythonProxy.py> | |
# | |
#Copyright (c) <2009> <Fabio Domingues - fnds3000 in gmail.com> | |
# | |
#Permission is hereby granted, free of charge, to any person | |
#obtaining a copy of this software and associated documentation | |
#files (the "Software"), to deal in the Software without | |
#restriction, including without limitation the rights to use, | |
#copy, modify, merge, publish, distribute, sublicense, and/or sell | |
#copies of the Software, and to permit persons to whom the | |
#Software is furnished to do so, subject to the following | |
#conditions: | |
# | |
#The above copyright notice and this permission notice shall be | |
#included in all copies or substantial portions of the Software. | |
# | |
#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
#EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES | |
#OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
#NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT | |
#HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, | |
#WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
#FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
#OTHER DEALINGS IN THE SOFTWARE. | |
import socket, thread, select | |
__version__ = '0.1.0 Draft 1' | |
BUFLEN = 8192 | |
VERSION = 'Python Proxy/'+__version__ | |
HTTPVER = 'HTTP/1.1' | |
class ConnectionHandler: | |
def __init__(self, connection, address, timeout): | |
self.client = connection | |
self.client_buffer = '' | |
self.timeout = timeout | |
self.method, self.path, self.protocol = self.get_base_header() | |
if self.method=='CONNECT': | |
self.method_CONNECT() | |
elif self.method in ('OPTIONS', 'GET', 'HEAD', 'POST', 'PUT', | |
'DELETE', 'TRACE'): | |
self.method_others() | |
self.client.close() | |
self.target.close() | |
def get_base_header(self): | |
while 1: | |
self.client_buffer += self.client.recv(BUFLEN) | |
end = self.client_buffer.find('\n') | |
if end!=-1: | |
break | |
print '%s'%self.client_buffer[:end]#debug | |
data = (self.client_buffer[:end+1]).split() | |
self.client_buffer = self.client_buffer[end+1:] | |
return data | |
def method_CONNECT(self): | |
self._connect_target(self.path) | |
self.client.send(HTTPVER+' 200 Connection established\n'+ | |
'Proxy-agent: %s\n\n'%VERSION) | |
self.client_buffer = '' | |
self._read_write() | |
def method_others(self): | |
self.path = self.path[7:] | |
i = self.path.find('/') | |
host = self.path[:i] | |
path = self.path[i:] | |
self._connect_target(host) | |
self.target.send('%s %s %s\n'%(self.method, path, self.protocol)+ | |
self.client_buffer) | |
self.client_buffer = '' | |
self._read_write() | |
def _connect_target(self, host): | |
i = host.find(':') | |
if i!=-1: | |
port = int(host[i+1:]) | |
host = host[:i] | |
else: | |
port = 80 | |
(soc_family, _, _, _, address) = socket.getaddrinfo(host, port)[0] | |
self.target = socket.socket(soc_family) | |
self.target.connect(address) | |
def _read_write(self): | |
time_out_max = self.timeout/3 | |
socs = [self.client, self.target] | |
count = 0 | |
while 1: | |
count += 1 | |
(recv, _, error) = select.select(socs, [], socs, 3) | |
if error: | |
break | |
if recv: | |
for in_ in recv: | |
data = in_.recv(BUFLEN) | |
if in_ is self.client: | |
out = self.target | |
else: | |
out = self.client | |
if data: | |
out.send(data) | |
count = 0 | |
if count == time_out_max: | |
break | |
def start_server(host='localhost', port=8080, IPv6=False, timeout=60, | |
handler=ConnectionHandler): | |
if IPv6==True: | |
soc_type=socket.AF_INET6 | |
else: | |
soc_type=socket.AF_INET | |
soc = socket.socket(soc_type) | |
soc.bind((host, port)) | |
print "Serving on %s:%d."%(host, port)#debug | |
soc.listen(0) | |
while 1: | |
thread.start_new_thread(handler, soc.accept()+(timeout,)) | |
if __name__ == '__main__': | |
start_server() |
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