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Diffstat (limited to 'python-client/tcprelay.py')
| -rw-r--r-- | python-client/tcprelay.py | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/python-client/tcprelay.py b/python-client/tcprelay.py new file mode 100644 index 0000000..3075fcb --- /dev/null +++ b/python-client/tcprelay.py @@ -0,0 +1,146 @@ +#!/usr/bin/python +# +# tcprelay.py - TCP connection relay for usbmuxd +# +# Copyright (C) 2009 Hector Martin "marcan" <hector@marcansoft.com> +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 2 or version 3. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +import usbmux +import SocketServer +import select +from optparse import OptionParser +import sys +import threading + +class SocketRelay(object): + def __init__(self, a, b, maxbuf=65535): + self.a = a + self.b = b + self.atob = "" + self.btoa = "" + self.maxbuf = maxbuf + def handle(self): + while True: + rlist = [] + wlist = [] + xlist = [self.a, self.b] + if self.atob: + wlist.append(self.b) + if self.btoa: + wlist.append(self.a) + if len(self.atob) < self.maxbuf: + rlist.append(self.a) + if len(self.btoa) < self.maxbuf: + rlist.append(self.b) + rlo, wlo, xlo = select.select(rlist, wlist, xlist) + if xlo: + return + if self.a in wlo: + n = self.a.send(self.btoa) + self.btoa = self.btoa[n:] + if self.b in wlo: + n = self.b.send(self.atob) + self.atob = self.atob[n:] + if self.a in rlo: + s = self.a.recv(self.maxbuf - len(self.atob)) + if not s: + return + self.atob += s + if self.b in rlo: + s = self.b.recv(self.maxbuf - len(self.btoa)) + if not s: + return + self.btoa += s + #print "Relay iter: %8d atob, %8d btoa, lists: %r %r %r"%(len(self.atob), len(self.btoa), rlo, wlo, xlo) + +class TCPRelay(SocketServer.BaseRequestHandler): + def handle(self): + print "Incoming connection to %d"%self.server.server_address[1] + mux = usbmux.USBMux("/tmp/usbmuxd") + print "Waiting for devices..." + if not mux.devices: + mux.process(1.0) + if not mux.devices: + print "No device found" + self.request.close() + return + dev = mux.devices[0] + print "Connecting to device %s"%str(dev) + dsock = mux.connect(dev, self.server.rport) + lsock = self.request + print "Connection established, relaying data" + try: + fwd = SocketRelay(dsock, lsock, self.server.bufsize * 1024) + fwd.handle() + finally: + dsock.close() + lsock.close() + print "Connection closed" + +class TCPServer(SocketServer.TCPServer): + allow_reuse_address = True + +class ThreadedTCPServer(SocketServer.ThreadingMixIn, TCPServer): + pass + +HOST = "localhost" + +parser = OptionParser(usage="usage: %prog [OPTIONS] RemotePort[:LocalPort] [RemotePort[:LocalPort]]...") +parser.add_option("-t", "--threaded", dest='threaded', action='store_true', default=False, help="use threading to handle multiple connections at once") +parser.add_option("-b", "--bufsize", dest='bufsize', action='store', metavar='KILOBYTES', type='int', default=128, help="specify buffer size for socket forwarding") + +options, args = parser.parse_args() + +serverclass = TCPServer +if options.threaded: + serverclass = ThreadedTCPServer + +if len(args) == 0: + parser.print_help() + sys.exit(1) + +ports = [] + +for arg in args: + try: + if ':' in arg: + rport, lport = arg.split(":") + rport = int(rport) + lport = int(lport) + ports.append((rport, lport)) + else: + ports.append((int(arg), int(arg))) + except: + parser.print_help() + sys.exit(1) + +servers=[] + +for rport, lport in ports: + print "Forwarding local port %d to remote port %d"%(lport, rport) + server = serverclass((HOST, lport), TCPRelay) + server.rport = rport + server.bufsize = options.bufsize + servers.append(server) + +alive = True + +while alive: + try: + rl, wl, xl = select.select(servers, [], []) + for server in rl: + server.handle_request() + except: + alive = False |