1 files changed, 147 insertions, 0 deletions

diff --git a/python-client/tcprelay.py b/python-client/tcprelay.py
new file mode 100644
index 0000000..2874ae1
--- /dev/null
+++ b/python-client/tcprelay.py
@@ -0,0 +1,147 @@
+#!/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(options.sockpath)
+                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")
+parser.add_option("-s", "--socket", dest='sockpath', action='store', metavar='PATH', type='str', default=None, help="specify the path of the usbmuxd socket")
+
+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