#!/usr/bin/env python

# Copyright (C) 2010  Aldo Cortesi
# 
# 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 3 of the License, or
# (at your option) any later version.
# 
# 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, see <http://www.gnu.org/licenses/>.

import sys, os.path
from libmproxy import proxy, dump, utils
from libmproxy.version import VERSION
from optparse import OptionParser, OptionGroup


if __name__ == '__main__':
    parser = OptionParser(
                usage = "%prog [options] [filter]",
                version="%%prog %s"%VERSION,
            )
    parser.add_option(
        "-a",
        action="store", type = "str", dest="addr", default='',
        help = "Address to bind proxy to (defaults to all interfaces)"
    )
    parser.add_option(
        "-i",
        action="store_true", dest="stickycookie_all", default=None,
        help="Set sticky cookie for all requests."
    )
    parser.add_option(
        "-I",
        action="store", dest="stickycookie_filt", default=None, metavar="FILTER",
        help="Set sticky cookie filter. Matched against requests."
    )
    parser.add_option(
        "--keepserving",
        action="store_true", dest="keepserving", default=False,
        help="Continue serving after playback."
    )
    parser.add_option(
        "-p",
        action="store", type = "int", dest="port", default=8080,
        help = "Proxy service port."
    )
    parser.add_option(
        "-q",
        action="store_true", dest="quiet",
        help="Quiet."
    )
    parser.add_option(
        "--anticache",
        action="store_true", dest="anticache", default=False,
        help="Strip out request headers that might cause the server to return 304-not-modified."
    )
    parser.add_option(
        "--reqscript",
        action="store", dest="request_script", default=None,
        help="Script to run when a request is recieved."
    )
    parser.add_option(
        "--respscript",
        action="store", dest="response_script", default=None,
        help="Script to run when a response is recieved."
    )
    parser.add_option(
        "-v",
        action="count", dest="verbose", default=1,
        help="Increase verbosity. Can be passed multiple times."
    )
    parser.add_option(
        "-w",
        action="store", dest="wfile", default=None,
        help="Write flows to file."
    )

    group = OptionGroup(parser, "Client Replay")
    group.add_option(
        "-c",
        action="store", dest="client_replay", default=None, metavar="PATH",
        help="Replay client requests from a saved file."
    )
    parser.add_option_group(group)

    group = OptionGroup(parser, "Server Replay")
    group.add_option(
        "-s",
        action="store", dest="server_replay", default=None, metavar="PATH",
        help="Replay server responses from a saved file."
    )
    group.add_option(
        "-k",
        action="store_true", dest="kill", default=False,
        help="Kill extra requests during replay."
    )
    group.add_option(
        "--rheader",
        action="append", dest="rheaders", type="str",
        help="Request headers to be considered during replay. "
           "Can be passed multiple times."
    )
    group.add_option(
        "--norefresh",
        action="store_true", dest="norefresh", default=False,
        help= "Disable response refresh, "
        "which updates times in cookies and headers for replayed responses."
    )
    parser.add_option_group(group)

    proxy.certificate_option_group(parser)


    options, args = parser.parse_args()

    if options.quiet:
        options.verbose = 0

    stickycookie = None
    if options.stickycookie_all:
        stickycookie = ".*"
    elif options.stickycookie_filt:
        stickycookie = stickycookie_filt

    config = proxy.process_certificate_option_group(parser, options)
    try:
        server = proxy.ProxyServer(config, options.port, options.addr)
    except proxy.ProxyServerError, v:
        print >> sys.stderr, "mitmdump:", v.args[0]
        sys.exit(1)

    dumpopts = dump.Options(
        verbosity = options.verbose,
        wfile = options.wfile,
        request_script = options.request_script,
        response_script = options.response_script,
        server_replay = options.server_replay,
        kill = options.kill,
        rheaders = options.rheaders,
        client_replay = options.client_replay,
        keepserving = options.keepserving,
        stickycookie = stickycookie,
        anticache = options.anticache,
        refresh_server_playback = not options.norefresh,
    )
    if args:
        filt = " ".join(args)
    else:
        filt = None

    try:
        m = dump.DumpMaster(server, dumpopts, filt)
        m.run()
    except dump.DumpError, e:
        print >> sys.stderr, "mitmdump:", e
        sys.exit(1)
    except KeyboardInterrupt:
        pass