From dce2546afadd9185b7e65f1db6b127d6293b178c Mon Sep 17 00:00:00 2001
From: Hector Martin
Date: Tue, 5 May 2009 01:40:22 +0200
Subject: Add python stuff and patches

---
 python-client/tcprelay.py | 146 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 146 insertions(+)
 create mode 100644 python-client/tcprelay.py

(limited to 'python-client/tcprelay.py')

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
-- 
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