googlecode ：https://code.google.com/archive/p/python-proxy/source/default/source # -*- coding: cp1252 -*- # <PythonProxy.py> # #Copyright (c) <2009> <F醔io 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. """ Copyright (c) <2009> <F醔io Domingues - fnds3000 in gmail.com> <MIT Licence> ************************************** *** Python Proxy - A Fast HTTP proxy *** ************************************** Neste momento este proxy ?um Elie Proxy. Suporta os m閠odos HTTP: - OPTIONS; - GET; - HEAD; - POST; - PUT; - DELETE; - TRACE; - CONENCT. Suporta: - Conex鮡s dos cliente em IPv4 ou IPv6; - Conex鮡s ao alvo em IPv4 e IPv6; - Conex鮡s todo o tipo de transmiss鉶 de dados TCP (CONNECT tunneling), p.e. liga珲es SSL, como ?o caso do HTTPS. A fazer: - Verificar se o input vindo do cliente est?correcto; - Enviar os devidos HTTP erros se n鉶, ou simplesmente quebrar a liga玢o; - Criar um gestor de erros; - Criar ficheiro log de erros; - Colocar excep珲es nos s韙ios onde ?previs韛el a ocorr阯cia de erros, p.e.sockets e ficheiros; - Rever tudo e melhorar a estrutura do programar e colocar nomes adequados nas vari醰eis e m閠odos; - Comentar o programa decentemente; - Doc Strings. Funcionalidades futuras: - Adiconar a funcionalidade de proxy an髇imo e transparente; - Suportar FTP?. (!) Aten玢o o que se segue s?tem efeito em conex鮡s n鉶 CONNECT, para estas o proxy ?sempre Elite. Qual a diferen鏰 entre um proxy Elite, An髇imo e Transparente? - Um proxy elite ?totalmente an髇imo, o servidor que o recebe n鉶 consegue ter conhecimento da exist阯cia do proxy e n鉶 recebe o endere鏾 IP do cliente; - Quando ?usado um proxy an髇imo o servidor sabe que o cliente est?a usar um proxy mas n鉶 sabe o endere鏾 IP do cliente; ?enviado o cabe鏰lho HTTP "Proxy-agent". - Um proxy transparente fornece ao servidor o IP do cliente e um informa玢o que se est?a usar um proxy. S鉶 enviados os cabe鏰lhos HTTP "Proxy-agent" e "HTTP_X_FORWARDED_FOR". """ 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(' ') 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 '+ 'Proxy-agent: %s '%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 '%(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='', 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()