[133] | 1 | #!/usr/bin/env python |
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| 2 | # -*- coding: utf-8 -*- |
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| 3 | # |
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[141] | 4 | # Ethernet over WebSocket tunneling server/client |
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[133] | 5 | # |
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| 6 | # depends on: |
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| 7 | # - python-2.7.2 |
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| 8 | # - python-pytun-0.2 |
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[136] | 9 | # - websocket-client-0.7.0 |
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[183] | 10 | # - tornado-2.3 |
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[133] | 11 | # |
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[140] | 12 | # todo: |
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[143] | 13 | # - servant mode support (like typical p2p software) |
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[140] | 14 | # |
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[133] | 15 | # =========================================================================== |
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| 16 | # Copyright (c) 2012, Atzm WATANABE <atzm@atzm.org> |
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| 17 | # All rights reserved. |
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| 18 | # |
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| 19 | # Redistribution and use in source and binary forms, with or without |
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| 20 | # modification, are permitted provided that the following conditions are met: |
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| 21 | # |
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| 22 | # 1. Redistributions of source code must retain the above copyright notice, |
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| 23 | # this list of conditions and the following disclaimer. |
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| 24 | # 2. Redistributions in binary form must reproduce the above copyright |
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| 25 | # notice, this list of conditions and the following disclaimer in the |
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| 26 | # documentation and/or other materials provided with the distribution. |
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| 27 | # |
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| 28 | # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| 29 | # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 30 | # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 31 | # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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| 32 | # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| 33 | # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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| 34 | # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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| 35 | # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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| 36 | # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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| 37 | # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 38 | # POSSIBILITY OF SUCH DAMAGE. |
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| 39 | # =========================================================================== |
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| 40 | # |
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| 41 | # $Id$ |
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| 42 | |
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| 43 | import os |
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| 44 | import sys |
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[156] | 45 | import ssl |
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[160] | 46 | import time |
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[183] | 47 | import json |
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[175] | 48 | import fcntl |
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[150] | 49 | import base64 |
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| 50 | import hashlib |
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[151] | 51 | import getpass |
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[133] | 52 | import argparse |
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[165] | 53 | import traceback |
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[133] | 54 | |
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| 55 | import websocket |
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| 56 | |
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[183] | 57 | from tornado.web import Application, RequestHandler |
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[182] | 58 | from tornado.websocket import WebSocketHandler |
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[183] | 59 | from tornado.httpserver import HTTPServer |
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| 60 | from tornado.ioloop import IOLoop |
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| 61 | |
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[166] | 62 | from pytun import TunTapDevice, IFF_TAP, IFF_NO_PI |
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[133] | 63 | |
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[166] | 64 | |
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[160] | 65 | class DebugMixIn(object): |
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[166] | 66 | def dprintf(self, msg, func=lambda: ()): |
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[160] | 67 | if self._debug: |
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| 68 | prefix = '[%s] %s - ' % (time.asctime(), self.__class__.__name__) |
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[164] | 69 | sys.stderr.write(prefix + (msg % func())) |
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[160] | 70 | |
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| 71 | |
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[164] | 72 | class EthernetFrame(object): |
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| 73 | def __init__(self, data): |
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| 74 | self.data = data |
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| 75 | |
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[176] | 76 | @property |
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| 77 | def dst_multicast(self): |
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| 78 | return ord(self.data[0]) & 1 |
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[164] | 79 | |
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| 80 | @property |
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[176] | 81 | def src_multicast(self): |
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| 82 | return ord(self.data[6]) & 1 |
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| 83 | |
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| 84 | @property |
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[164] | 85 | def dst_mac(self): |
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| 86 | return self.data[:6] |
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| 87 | |
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| 88 | @property |
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| 89 | def src_mac(self): |
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| 90 | return self.data[6:12] |
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| 91 | |
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| 92 | @property |
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| 93 | def tagged(self): |
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| 94 | return ord(self.data[12]) == 0x81 and ord(self.data[13]) == 0 |
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| 95 | |
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| 96 | @property |
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| 97 | def vid(self): |
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| 98 | if self.tagged: |
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| 99 | return ((ord(self.data[14]) << 8) | ord(self.data[15])) & 0x0fff |
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[183] | 100 | return 0 |
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[164] | 101 | |
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| 102 | |
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[166] | 103 | class FDB(DebugMixIn): |
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[167] | 104 | def __init__(self, ageout, debug=False): |
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[164] | 105 | self._ageout = ageout |
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| 106 | self._debug = debug |
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[166] | 107 | self._dict = {} |
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[164] | 108 | |
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| 109 | def lookup(self, frame): |
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| 110 | mac = frame.dst_mac |
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| 111 | vid = frame.vid |
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| 112 | |
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[177] | 113 | group = self._dict.get(vid) |
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[164] | 114 | if not group: |
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| 115 | return None |
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| 116 | |
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[177] | 117 | entry = group.get(mac) |
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[164] | 118 | if not entry: |
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| 119 | return None |
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| 120 | |
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| 121 | if time.time() - entry['time'] > self._ageout: |
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[183] | 122 | port = self._dict[vid][mac]['port'] |
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[166] | 123 | del self._dict[vid][mac] |
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| 124 | if not self._dict[vid]: |
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| 125 | del self._dict[vid] |
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[183] | 126 | self.dprintf('aged out: port:%d; vid:%d; mac:%s\n', |
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| 127 | lambda: (port.number, vid, mac.encode('hex'))) |
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[164] | 128 | return None |
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| 129 | |
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| 130 | return entry['port'] |
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| 131 | |
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[166] | 132 | def learn(self, port, frame): |
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| 133 | mac = frame.src_mac |
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| 134 | vid = frame.vid |
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| 135 | |
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| 136 | if vid not in self._dict: |
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| 137 | self._dict[vid] = {} |
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| 138 | |
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| 139 | self._dict[vid][mac] = {'time': time.time(), 'port': port} |
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[183] | 140 | self.dprintf('learned: port:%d; vid:%d; mac:%s\n', |
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| 141 | lambda: (port.number, vid, mac.encode('hex'))) |
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[166] | 142 | |
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[164] | 143 | def delete(self, port): |
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[166] | 144 | for vid in self._dict.keys(): |
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| 145 | for mac in self._dict[vid].keys(): |
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[183] | 146 | if self._dict[vid][mac]['port'].number == port.number: |
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[166] | 147 | del self._dict[vid][mac] |
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[183] | 148 | self.dprintf('deleted: port:%d; vid:%d; mac:%s\n', |
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| 149 | lambda: (port.number, vid, mac.encode('hex'))) |
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[166] | 150 | if not self._dict[vid]: |
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| 151 | del self._dict[vid] |
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[164] | 152 | |
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| 153 | |
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[183] | 154 | class SwitchPort(object): |
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| 155 | def __init__(self, number, interface): |
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| 156 | self.number = number |
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| 157 | self.interface = interface |
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| 158 | self.tx = 0 |
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| 159 | self.rx = 0 |
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| 160 | self.shut = False |
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| 161 | |
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| 162 | @staticmethod |
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| 163 | def cmp_by_number(x, y): |
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| 164 | return cmp(x.number, y.number) |
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| 165 | |
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| 166 | |
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[166] | 167 | class SwitchingHub(DebugMixIn): |
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| 168 | def __init__(self, fdb, debug=False): |
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| 169 | self._fdb = fdb |
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[133] | 170 | self._debug = debug |
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[183] | 171 | self._table = {} |
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| 172 | self._next = 1 |
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[133] | 173 | |
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[183] | 174 | @property |
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| 175 | def portlist(self): |
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| 176 | return sorted(self._table.itervalues(), cmp=SwitchPort.cmp_by_number) |
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[133] | 177 | |
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[183] | 178 | def shut_port(self, portnum, flag=True): |
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| 179 | self._table[portnum].shut = flag |
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[133] | 180 | |
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[183] | 181 | def get_port(self, portnum): |
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| 182 | return self._table[portnum] |
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| 183 | |
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| 184 | def register_port(self, interface): |
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| 185 | interface._switch_portnum = self._next # XXX |
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| 186 | self._table[self._next] = SwitchPort(self._next, interface) |
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| 187 | self._next += 1 |
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| 188 | |
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| 189 | def unregister_port(self, interface): |
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| 190 | self._fdb.delete(self._table[interface._switch_portnum]) |
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| 191 | del self._table[interface._switch_portnum] |
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| 192 | del interface._switch_portnum |
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| 193 | |
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| 194 | def send(self, dst_interfaces, frame): |
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| 195 | ports = sorted((self._table[i._switch_portnum] for i in dst_interfaces |
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| 196 | if not self._table[i._switch_portnum].shut), |
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| 197 | cmp=SwitchPort.cmp_by_number) |
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| 198 | |
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| 199 | for p in ports: |
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| 200 | p.interface.write_message(frame.data, True) |
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| 201 | p.tx += 1 |
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| 202 | |
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| 203 | if ports: |
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| 204 | self.dprintf('sent: port:%s; vid:%d; %s -> %s\n', |
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| 205 | lambda: (','.join(str(p.number) for p in ports), |
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| 206 | frame.vid, |
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| 207 | frame.src_mac.encode('hex'), |
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| 208 | frame.dst_mac.encode('hex'))) |
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| 209 | |
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| 210 | def receive(self, src_interface, frame): |
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| 211 | port = self._table[src_interface._switch_portnum] |
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| 212 | |
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| 213 | if not port.shut: |
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| 214 | port.rx += 1 |
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| 215 | self._forward(port, frame) |
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| 216 | |
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| 217 | def _forward(self, src_port, frame): |
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[166] | 218 | try: |
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[176] | 219 | if not frame.src_multicast: |
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[172] | 220 | self._fdb.learn(src_port, frame) |
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[133] | 221 | |
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[176] | 222 | if not frame.dst_multicast: |
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[166] | 223 | dst_port = self._fdb.lookup(frame) |
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[164] | 224 | |
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[166] | 225 | if dst_port: |
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[183] | 226 | self.send([dst_port.interface], frame) |
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[166] | 227 | return |
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[133] | 228 | |
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[183] | 229 | ports = set(self._table.itervalues()) - set([src_port]) |
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| 230 | self.send((p.interface for p in ports), frame) |
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[162] | 231 | |
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[166] | 232 | except: # ex. received invalid frame |
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| 233 | traceback.print_exc() |
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[133] | 234 | |
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[164] | 235 | |
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[179] | 236 | class Htpasswd(object): |
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| 237 | def __init__(self, path): |
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| 238 | self._path = path |
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| 239 | self._stat = None |
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| 240 | self._data = {} |
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| 241 | |
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| 242 | def auth(self, name, passwd): |
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| 243 | passwd = base64.b64encode(hashlib.sha1(passwd).digest()) |
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| 244 | return self._data.get(name) == passwd |
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| 245 | |
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| 246 | def load(self): |
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| 247 | old_stat = self._stat |
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| 248 | |
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| 249 | with open(self._path) as fp: |
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| 250 | fileno = fp.fileno() |
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| 251 | fcntl.flock(fileno, fcntl.LOCK_SH | fcntl.LOCK_NB) |
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| 252 | self._stat = os.fstat(fileno) |
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| 253 | |
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| 254 | unchanged = old_stat and \ |
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| 255 | old_stat.st_ino == self._stat.st_ino and \ |
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| 256 | old_stat.st_dev == self._stat.st_dev and \ |
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| 257 | old_stat.st_mtime == self._stat.st_mtime |
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| 258 | |
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| 259 | if not unchanged: |
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| 260 | self._data = self._parse(fp) |
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| 261 | |
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| 262 | return self |
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| 263 | |
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| 264 | def _parse(self, fp): |
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| 265 | data = {} |
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| 266 | for line in fp: |
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| 267 | line = line.strip() |
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| 268 | if 0 <= line.find(':'): |
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| 269 | name, passwd = line.split(':', 1) |
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| 270 | if passwd.startswith('{SHA}'): |
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| 271 | data[name] = passwd[5:] |
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| 272 | return data |
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| 273 | |
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| 274 | |
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[182] | 275 | class BasicAuthMixIn(object): |
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| 276 | def _execute(self, transforms, *args, **kwargs): |
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| 277 | def do_execute(): |
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| 278 | sp = super(BasicAuthMixIn, self) |
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| 279 | return sp._execute(transforms, *args, **kwargs) |
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| 280 | |
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| 281 | def auth_required(): |
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| 282 | self.stream.write(tornado.escape.utf8( |
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| 283 | 'HTTP/1.1 401 Authorization Required\r\n' |
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| 284 | 'WWW-Authenticate: Basic realm=etherws\r\n\r\n' |
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| 285 | )) |
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| 286 | self.stream.close() |
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| 287 | |
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| 288 | try: |
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| 289 | if not self._htpasswd: |
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| 290 | return do_execute() |
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| 291 | |
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| 292 | creds = self.request.headers.get('Authorization') |
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| 293 | |
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| 294 | if not creds or not creds.startswith('Basic '): |
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| 295 | return auth_required() |
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| 296 | |
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| 297 | name, passwd = base64.b64decode(creds[6:]).split(':', 1) |
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| 298 | |
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| 299 | if self._htpasswd.load().auth(name, passwd): |
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| 300 | return do_execute() |
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| 301 | except: |
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| 302 | traceback.print_exc() |
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| 303 | |
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| 304 | return auth_required() |
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| 305 | |
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| 306 | |
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[166] | 307 | class TapHandler(DebugMixIn): |
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| 308 | READ_SIZE = 65535 |
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| 309 | |
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[178] | 310 | def __init__(self, ioloop, switch, dev, debug=False): |
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| 311 | self._ioloop = ioloop |
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[166] | 312 | self._switch = switch |
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| 313 | self._dev = dev |
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| 314 | self._debug = debug |
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| 315 | self._tap = None |
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| 316 | |
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| 317 | @property |
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| 318 | def closed(self): |
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| 319 | return not self._tap |
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| 320 | |
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[183] | 321 | def get_type(self): |
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| 322 | return 'tap' |
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| 323 | |
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| 324 | def get_name(self): |
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| 325 | if self.closed: |
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| 326 | return self._dev |
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| 327 | return self._tap.name |
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| 328 | |
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[166] | 329 | def open(self): |
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| 330 | if not self.closed: |
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| 331 | raise ValueError('already opened') |
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| 332 | self._tap = TunTapDevice(self._dev, IFF_TAP | IFF_NO_PI) |
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| 333 | self._tap.up() |
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| 334 | self._switch.register_port(self) |
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[178] | 335 | self._ioloop.add_handler(self.fileno(), self, self._ioloop.READ) |
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[166] | 336 | |
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| 337 | def close(self): |
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| 338 | if self.closed: |
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| 339 | raise ValueError('I/O operation on closed tap') |
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[178] | 340 | self._ioloop.remove_handler(self.fileno()) |
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[166] | 341 | self._switch.unregister_port(self) |
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| 342 | self._tap.close() |
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| 343 | self._tap = None |
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| 344 | |
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| 345 | def fileno(self): |
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| 346 | if self.closed: |
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| 347 | raise ValueError('I/O operation on closed tap') |
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| 348 | return self._tap.fileno() |
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| 349 | |
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| 350 | def write_message(self, message, binary=False): |
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| 351 | if self.closed: |
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| 352 | raise ValueError('I/O operation on closed tap') |
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| 353 | self._tap.write(message) |
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| 354 | |
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[138] | 355 | def __call__(self, fd, events): |
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[166] | 356 | try: |
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[183] | 357 | self._switch.receive(self, EthernetFrame(self._read())) |
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[166] | 358 | return |
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| 359 | except: |
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| 360 | traceback.print_exc() |
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[178] | 361 | self.close() |
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[166] | 362 | |
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| 363 | def _read(self): |
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| 364 | if self.closed: |
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| 365 | raise ValueError('I/O operation on closed tap') |
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[162] | 366 | buf = [] |
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| 367 | while True: |
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[166] | 368 | buf.append(self._tap.read(self.READ_SIZE)) |
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| 369 | if len(buf[-1]) < self.READ_SIZE: |
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[162] | 370 | break |
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[166] | 371 | return ''.join(buf) |
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[162] | 372 | |
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| 373 | |
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[182] | 374 | class EtherWebSocketHandler(DebugMixIn, BasicAuthMixIn, WebSocketHandler): |
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[179] | 375 | def __init__(self, app, req, switch, htpasswd=None, debug=False): |
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[160] | 376 | super(EtherWebSocketHandler, self).__init__(app, req) |
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[166] | 377 | self._switch = switch |
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[179] | 378 | self._htpasswd = htpasswd |
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[133] | 379 | self._debug = debug |
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| 380 | |
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[183] | 381 | def get_type(self): |
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| 382 | return 'server' |
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| 383 | |
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| 384 | def get_name(self): |
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| 385 | return self.request.remote_ip |
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| 386 | |
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[133] | 387 | def open(self): |
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[166] | 388 | self._switch.register_port(self) |
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[164] | 389 | self.dprintf('connected: %s\n', lambda: self.request.remote_ip) |
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[133] | 390 | |
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| 391 | def on_message(self, message): |
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[183] | 392 | self._switch.receive(self, EthernetFrame(message)) |
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[133] | 393 | |
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| 394 | def on_close(self): |
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[166] | 395 | self._switch.unregister_port(self) |
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[164] | 396 | self.dprintf('disconnected: %s\n', lambda: self.request.remote_ip) |
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[133] | 397 | |
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| 398 | |
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[160] | 399 | class EtherWebSocketClient(DebugMixIn): |
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[181] | 400 | def __init__(self, ioloop, switch, url, ssl_=None, cred=None, debug=False): |
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[178] | 401 | self._ioloop = ioloop |
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[166] | 402 | self._switch = switch |
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[151] | 403 | self._url = url |
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[181] | 404 | self._ssl = ssl_ |
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[160] | 405 | self._debug = debug |
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[166] | 406 | self._sock = None |
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[151] | 407 | self._options = {} |
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| 408 | |
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[174] | 409 | if isinstance(cred, dict) and cred['user'] and cred['passwd']: |
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| 410 | token = base64.b64encode('%s:%s' % (cred['user'], cred['passwd'])) |
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[151] | 411 | auth = ['Authorization: Basic %s' % token] |
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| 412 | self._options['header'] = auth |
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| 413 | |
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[160] | 414 | @property |
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| 415 | def closed(self): |
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| 416 | return not self._sock |
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| 417 | |
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[183] | 418 | def get_type(self): |
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| 419 | return 'client' |
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| 420 | |
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| 421 | def get_name(self): |
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| 422 | return self._url |
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| 423 | |
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[151] | 424 | def open(self): |
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[181] | 425 | sslwrap = websocket._SSLSocketWrapper |
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| 426 | |
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[160] | 427 | if not self.closed: |
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| 428 | raise websocket.WebSocketException('already opened') |
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[151] | 429 | |
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[181] | 430 | if self._ssl: |
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| 431 | websocket._SSLSocketWrapper = self._ssl |
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| 432 | |
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| 433 | try: |
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| 434 | self._sock = websocket.WebSocket() |
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| 435 | self._sock.connect(self._url, **self._options) |
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| 436 | self._switch.register_port(self) |
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| 437 | self._ioloop.add_handler(self.fileno(), self, self._ioloop.READ) |
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| 438 | self.dprintf('connected: %s\n', lambda: self._url) |
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| 439 | finally: |
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| 440 | websocket._SSLSocketWrapper = sslwrap |
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| 441 | |
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[151] | 442 | def close(self): |
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[160] | 443 | if self.closed: |
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| 444 | raise websocket.WebSocketException('already closed') |
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[178] | 445 | self._ioloop.remove_handler(self.fileno()) |
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[166] | 446 | self._switch.unregister_port(self) |
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[151] | 447 | self._sock.close() |
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| 448 | self._sock = None |
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[164] | 449 | self.dprintf('disconnected: %s\n', lambda: self._url) |
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[151] | 450 | |
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[165] | 451 | def fileno(self): |
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| 452 | if self.closed: |
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| 453 | raise websocket.WebSocketException('closed socket') |
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| 454 | return self._sock.io_sock.fileno() |
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| 455 | |
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[151] | 456 | def write_message(self, message, binary=False): |
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[160] | 457 | if self.closed: |
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| 458 | raise websocket.WebSocketException('closed socket') |
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[151] | 459 | if binary: |
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| 460 | flag = websocket.ABNF.OPCODE_BINARY |
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[160] | 461 | else: |
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| 462 | flag = websocket.ABNF.OPCODE_TEXT |
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[151] | 463 | self._sock.send(message, flag) |
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| 464 | |
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[165] | 465 | def __call__(self, fd, events): |
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[151] | 466 | try: |
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[165] | 467 | data = self._sock.recv() |
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| 468 | if data is not None: |
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[183] | 469 | self._switch.receive(self, EthernetFrame(data)) |
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[165] | 470 | return |
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| 471 | except: |
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| 472 | traceback.print_exc() |
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[178] | 473 | self.close() |
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[151] | 474 | |
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| 475 | |
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[183] | 476 | class EtherWebSocketControlHandler(DebugMixIn, BasicAuthMixIn, RequestHandler): |
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| 477 | NAMESPACE = 'etherws.control' |
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| 478 | |
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| 479 | def __init__(self, app, req, ioloop, switch, htpasswd=None, debug=False): |
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| 480 | super(EtherWebSocketControlHandler, self).__init__(app, req) |
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| 481 | self._ioloop = ioloop |
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| 482 | self._switch = switch |
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| 483 | self._htpasswd = htpasswd |
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| 484 | self._debug = debug |
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| 485 | |
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| 486 | def post(self): |
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| 487 | id_ = None |
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| 488 | |
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| 489 | try: |
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| 490 | req = json.loads(self.request.body) |
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| 491 | method = req['method'] |
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| 492 | params = req['params'] |
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| 493 | id_ = req.get('id') |
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| 494 | |
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| 495 | if not method.startswith(self.NAMESPACE + '.'): |
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| 496 | raise ValueError('invalid method: %s' % method) |
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| 497 | |
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| 498 | if not isinstance(params, list): |
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| 499 | raise ValueError('invalid params: %s' % params) |
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| 500 | |
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| 501 | handler = 'handle_' + method[len(self.NAMESPACE) + 1:] |
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| 502 | result = getattr(self, handler)(params) |
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| 503 | self.finish({'result': result, 'error': None, 'id': id_}) |
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| 504 | |
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| 505 | except Exception as e: |
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| 506 | traceback.print_exc() |
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| 507 | self.finish({'result': None, 'error': str(e), 'id': id_}) |
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| 508 | |
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| 509 | def handle_listPort(self, params): |
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| 510 | list_ = [] |
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| 511 | for port in self._switch.portlist: |
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| 512 | list_.append({ |
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| 513 | 'port': port.number, |
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| 514 | 'type': port.interface.get_type(), |
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| 515 | 'name': port.interface.get_name(), |
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| 516 | 'tx': port.tx, |
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| 517 | 'rx': port.rx, |
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| 518 | 'shut': port.shut, |
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| 519 | }) |
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| 520 | return {'portlist': list_} |
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| 521 | |
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| 522 | def handle_addPort(self, params): |
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| 523 | for p in params: |
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| 524 | getattr(self, '_openport_' + p['type'])(p) |
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| 525 | return self.handle_listPort(params) |
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| 526 | |
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| 527 | def handle_delPort(self, params): |
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| 528 | for p in params: |
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| 529 | self._switch.get_port(int(p['port'])).interface.close() |
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| 530 | return self.handle_listPort(params) |
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| 531 | |
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| 532 | def handle_shutPort(self, params): |
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| 533 | for p in params: |
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| 534 | self._switch.shut_port(int(p['port']), bool(p['flag'])) |
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| 535 | return self.handle_listPort(params) |
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| 536 | |
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| 537 | def _openport_tap(self, p): |
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| 538 | dev = p['device'] |
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| 539 | tap = TapHandler(self._ioloop, self._switch, dev, debug=self._debug) |
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| 540 | tap.open() |
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| 541 | |
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| 542 | def _openport_client(self, p): |
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| 543 | ssl_ = self._ssl_wrapper(p.get('insecure'), p.get('cacerts')) |
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| 544 | cred = {'user': p.get('user'), 'passwd': p.get('passwd')} |
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| 545 | url = p['url'] |
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| 546 | client = EtherWebSocketClient(self._ioloop, self._switch, |
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| 547 | url, ssl_, cred, self._debug) |
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| 548 | client.open() |
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| 549 | |
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| 550 | @staticmethod |
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| 551 | def _ssl_wrapper(insecure, ca_certs): |
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| 552 | args = {'cert_reqs': ssl.CERT_REQUIRED, 'ca_certs': ca_certs} |
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| 553 | if insecure: |
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| 554 | args = {} |
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| 555 | return lambda sock: ssl.wrap_socket(sock, **args) |
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| 556 | |
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| 557 | |
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[134] | 558 | def daemonize(nochdir=False, noclose=False): |
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| 559 | if os.fork() > 0: |
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| 560 | sys.exit(0) |
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| 561 | |
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| 562 | os.setsid() |
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| 563 | |
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| 564 | if os.fork() > 0: |
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| 565 | sys.exit(0) |
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| 566 | |
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| 567 | if not nochdir: |
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| 568 | os.chdir('/') |
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| 569 | |
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| 570 | if not noclose: |
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| 571 | os.umask(0) |
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| 572 | sys.stdin.close() |
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| 573 | sys.stdout.close() |
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| 574 | sys.stderr.close() |
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| 575 | os.close(0) |
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| 576 | os.close(1) |
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| 577 | os.close(2) |
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| 578 | sys.stdin = open(os.devnull) |
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| 579 | sys.stdout = open(os.devnull, 'a') |
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| 580 | sys.stderr = open(os.devnull, 'a') |
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| 581 | |
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| 582 | |
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[183] | 583 | def main(): |
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| 584 | def realpath(ns, *keys): |
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| 585 | for k in keys: |
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| 586 | v = getattr(ns, k, None) |
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| 587 | if v is not None: |
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| 588 | v = os.path.realpath(v) |
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| 589 | open(v).close() # check readable |
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| 590 | setattr(ns, k, v) |
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[160] | 591 | |
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[184] | 592 | def checkpath(ns, path): |
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| 593 | val = getattr(ns, path, '') |
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| 594 | if not val.startswith('/'): |
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| 595 | raise ValueError('invalid %: %s' % (path, val)) |
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| 596 | |
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| 597 | def getsslopt(ns, key, cert): |
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| 598 | kval = getattr(ns, key, None) |
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| 599 | cval = getattr(ns, cert, None) |
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| 600 | if kval and cval: |
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| 601 | return {'keyfile': kval, 'certfile': cval} |
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| 602 | elif kval or cval: |
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| 603 | raise ValueError('both %s and %s are required' % (key, cert)) |
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| 604 | return None |
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| 605 | |
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| 606 | def setport(ns, port, isssl): |
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| 607 | val = getattr(ns, port, None) |
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| 608 | if val is None: |
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| 609 | if isssl: |
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| 610 | return setattr(ns, port, 443) |
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| 611 | return setattr(ns, port, 80) |
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| 612 | if not (0 <= val <= 65535): |
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| 613 | raise ValueError('invalid %s: %s' % (port, val)) |
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| 614 | |
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| 615 | def sethtpasswd(ns, htpasswd): |
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| 616 | val = getattr(ns, htpasswd, None) |
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| 617 | if val: |
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| 618 | return setattr(ns, htpasswd, Htpasswd(val)) |
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| 619 | |
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[183] | 620 | parser = argparse.ArgumentParser() |
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[160] | 621 | |
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[183] | 622 | parser.add_argument('--debug', action='store_true', default=False) |
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| 623 | parser.add_argument('--foreground', action='store_true', default=False) |
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| 624 | parser.add_argument('--ageout', action='store', type=int, default=300) |
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[180] | 625 | |
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[183] | 626 | parser.add_argument('--path', action='store', default='/') |
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[184] | 627 | parser.add_argument('--host', action='store', default='') |
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[183] | 628 | parser.add_argument('--port', action='store', type=int) |
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| 629 | parser.add_argument('--htpasswd', action='store') |
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| 630 | parser.add_argument('--sslkey', action='store') |
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| 631 | parser.add_argument('--sslcert', action='store') |
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[180] | 632 | |
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[183] | 633 | parser.add_argument('--ctlpath', action='store', default='/ctl') |
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[184] | 634 | parser.add_argument('--ctlhost', action='store', default='') |
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| 635 | parser.add_argument('--ctlport', action='store', type=int) |
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| 636 | parser.add_argument('--ctlhtpasswd', action='store') |
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| 637 | parser.add_argument('--ctlsslkey', action='store') |
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| 638 | parser.add_argument('--ctlsslcert', action='store') |
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[143] | 639 | |
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[184] | 640 | args = parser.parse_args() |
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[183] | 641 | |
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| 642 | #if args.debug: |
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| 643 | # websocket.enableTrace(True) |
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| 644 | |
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| 645 | if args.ageout <= 0: |
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| 646 | raise ValueError('invalid ageout: %s' % args.ageout) |
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| 647 | |
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[184] | 648 | realpath(args, 'htpasswd', 'sslkey', 'sslcert') |
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| 649 | realpath(args, 'ctlhtpasswd', 'ctlsslkey', 'ctlsslcert') |
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[183] | 650 | |
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[184] | 651 | checkpath(args, 'path') |
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| 652 | checkpath(args, 'ctlpath') |
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[183] | 653 | |
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[184] | 654 | sslopt = getsslopt(args, 'sslkey', 'sslcert') |
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| 655 | ctlsslopt = getsslopt(args, 'ctlsslkey', 'ctlsslcert') |
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[143] | 656 | |
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[184] | 657 | setport(args, 'port', sslopt) |
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| 658 | setport(args, 'ctlport', ctlsslopt) |
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[143] | 659 | |
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[184] | 660 | sethtpasswd(args, 'htpasswd') |
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| 661 | sethtpasswd(args, 'ctlhtpasswd') |
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[167] | 662 | |
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[183] | 663 | ioloop = IOLoop.instance() |
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[167] | 664 | fdb = FDB(ageout=args.ageout, debug=args.debug) |
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[183] | 665 | switch = SwitchingHub(fdb, debug=args.debug) |
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[167] | 666 | |
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[184] | 667 | if args.port == args.ctlport and args.host == args.ctlhost: |
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| 668 | if args.path == args.ctlpath: |
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| 669 | raise ValueError('same path/ctlpath on same host') |
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| 670 | if args.sslkey != args.ctlsslkey: |
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| 671 | raise ValueError('differ sslkey/ctlsslkey on same host') |
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| 672 | if args.sslcert != args.ctlsslcert: |
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| 673 | raise ValueError('differ sslcert/ctlsslcert on same host') |
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[133] | 674 | |
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[184] | 675 | app = Application([ |
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| 676 | (args.path, EtherWebSocketHandler, { |
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| 677 | 'switch': switch, |
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| 678 | 'htpasswd': args.htpasswd, |
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| 679 | 'debug': args.debug, |
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| 680 | }), |
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| 681 | (args.ctlpath, EtherWebSocketControlHandler, { |
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| 682 | 'ioloop': ioloop, |
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| 683 | 'switch': switch, |
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| 684 | 'htpasswd': args.ctlhtpasswd, |
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| 685 | 'debug': args.debug, |
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| 686 | }), |
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| 687 | ]) |
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| 688 | server = HTTPServer(app, ssl_options=sslopt) |
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| 689 | server.listen(args.port, address=args.host) |
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[151] | 690 | |
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[184] | 691 | else: |
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| 692 | app = Application([(args.path, EtherWebSocketHandler, { |
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| 693 | 'switch': switch, |
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| 694 | 'htpasswd': args.htpasswd, |
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| 695 | 'debug': args.debug, |
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| 696 | })]) |
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| 697 | server = HTTPServer(app, ssl_options=sslopt) |
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| 698 | server.listen(args.port, address=args.host) |
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| 699 | |
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| 700 | ctl = Application([(args.ctlpath, EtherWebSocketControlHandler, { |
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| 701 | 'ioloop': ioloop, |
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| 702 | 'switch': switch, |
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| 703 | 'htpasswd': args.ctlhtpasswd, |
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| 704 | 'debug': args.debug, |
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| 705 | })]) |
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| 706 | ctlserver = HTTPServer(ctl, ssl_options=ctlsslopt) |
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| 707 | ctlserver.listen(args.ctlport, address=args.ctlhost) |
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| 708 | |
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[151] | 709 | if not args.foreground: |
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| 710 | daemonize() |
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| 711 | |
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[138] | 712 | ioloop.start() |
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[133] | 713 | |
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| 714 | |
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| 715 | if __name__ == '__main__': |
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| 716 | main() |
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