[133] | 1 | #!/usr/bin/env python |
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| 2 | # -*- coding: utf-8 -*- |
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| 3 | # |
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[186] | 4 | # Ethernet over WebSocket |
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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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| 12 | # =========================================================================== |
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| 13 | # Copyright (c) 2012, Atzm WATANABE <atzm@atzm.org> |
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| 14 | # All rights reserved. |
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| 15 | # |
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| 16 | # Redistribution and use in source and binary forms, with or without |
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| 17 | # modification, are permitted provided that the following conditions are met: |
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| 18 | # |
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| 19 | # 1. Redistributions of source code must retain the above copyright notice, |
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| 20 | # this list of conditions and the following disclaimer. |
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| 21 | # 2. Redistributions in binary form must reproduce the above copyright |
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| 22 | # notice, this list of conditions and the following disclaimer in the |
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| 23 | # documentation and/or other materials provided with the distribution. |
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| 24 | # |
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| 25 | # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| 26 | # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 27 | # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 28 | # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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| 29 | # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| 30 | # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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| 31 | # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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| 32 | # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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| 33 | # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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| 34 | # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 35 | # POSSIBILITY OF SUCH DAMAGE. |
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| 36 | # =========================================================================== |
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| 37 | # |
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| 38 | # $Id$ |
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| 39 | |
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| 40 | import os |
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| 41 | import sys |
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[156] | 42 | import ssl |
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[160] | 43 | import time |
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[183] | 44 | import json |
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[175] | 45 | import fcntl |
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[150] | 46 | import base64 |
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| 47 | import hashlib |
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[151] | 48 | import getpass |
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[133] | 49 | import argparse |
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[165] | 50 | import traceback |
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[133] | 51 | |
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[185] | 52 | import tornado |
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[133] | 53 | import websocket |
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| 54 | |
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[183] | 55 | from tornado.web import Application, RequestHandler |
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[182] | 56 | from tornado.websocket import WebSocketHandler |
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[183] | 57 | from tornado.httpserver import HTTPServer |
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| 58 | from tornado.ioloop import IOLoop |
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| 59 | |
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[166] | 60 | from pytun import TunTapDevice, IFF_TAP, IFF_NO_PI |
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[133] | 61 | |
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[166] | 62 | |
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[160] | 63 | class DebugMixIn(object): |
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[166] | 64 | def dprintf(self, msg, func=lambda: ()): |
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[160] | 65 | if self._debug: |
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| 66 | prefix = '[%s] %s - ' % (time.asctime(), self.__class__.__name__) |
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[164] | 67 | sys.stderr.write(prefix + (msg % func())) |
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[160] | 68 | |
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| 69 | |
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[164] | 70 | class EthernetFrame(object): |
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| 71 | def __init__(self, data): |
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| 72 | self.data = data |
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| 73 | |
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[176] | 74 | @property |
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| 75 | def dst_multicast(self): |
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| 76 | return ord(self.data[0]) & 1 |
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[164] | 77 | |
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| 78 | @property |
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[176] | 79 | def src_multicast(self): |
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| 80 | return ord(self.data[6]) & 1 |
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| 81 | |
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| 82 | @property |
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[164] | 83 | def dst_mac(self): |
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| 84 | return self.data[:6] |
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| 85 | |
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| 86 | @property |
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| 87 | def src_mac(self): |
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| 88 | return self.data[6:12] |
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| 89 | |
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| 90 | @property |
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| 91 | def tagged(self): |
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| 92 | return ord(self.data[12]) == 0x81 and ord(self.data[13]) == 0 |
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| 93 | |
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| 94 | @property |
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| 95 | def vid(self): |
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| 96 | if self.tagged: |
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| 97 | return ((ord(self.data[14]) << 8) | ord(self.data[15])) & 0x0fff |
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[183] | 98 | return 0 |
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[164] | 99 | |
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| 100 | |
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[166] | 101 | class FDB(DebugMixIn): |
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[167] | 102 | def __init__(self, ageout, debug=False): |
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[164] | 103 | self._ageout = ageout |
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| 104 | self._debug = debug |
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[166] | 105 | self._dict = {} |
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[164] | 106 | |
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| 107 | def lookup(self, frame): |
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| 108 | mac = frame.dst_mac |
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| 109 | vid = frame.vid |
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| 110 | |
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[177] | 111 | group = self._dict.get(vid) |
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[164] | 112 | if not group: |
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| 113 | return None |
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| 114 | |
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[177] | 115 | entry = group.get(mac) |
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[164] | 116 | if not entry: |
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| 117 | return None |
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| 118 | |
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| 119 | if time.time() - entry['time'] > self._ageout: |
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[183] | 120 | port = self._dict[vid][mac]['port'] |
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[166] | 121 | del self._dict[vid][mac] |
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| 122 | if not self._dict[vid]: |
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| 123 | del self._dict[vid] |
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[183] | 124 | self.dprintf('aged out: port:%d; vid:%d; mac:%s\n', |
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| 125 | lambda: (port.number, vid, mac.encode('hex'))) |
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[164] | 126 | return None |
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| 127 | |
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| 128 | return entry['port'] |
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| 129 | |
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[166] | 130 | def learn(self, port, frame): |
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| 131 | mac = frame.src_mac |
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| 132 | vid = frame.vid |
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| 133 | |
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| 134 | if vid not in self._dict: |
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| 135 | self._dict[vid] = {} |
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| 136 | |
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| 137 | self._dict[vid][mac] = {'time': time.time(), 'port': port} |
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[183] | 138 | self.dprintf('learned: port:%d; vid:%d; mac:%s\n', |
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| 139 | lambda: (port.number, vid, mac.encode('hex'))) |
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[166] | 140 | |
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[164] | 141 | def delete(self, port): |
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[166] | 142 | for vid in self._dict.keys(): |
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| 143 | for mac in self._dict[vid].keys(): |
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[183] | 144 | if self._dict[vid][mac]['port'].number == port.number: |
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[166] | 145 | del self._dict[vid][mac] |
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[183] | 146 | self.dprintf('deleted: port:%d; vid:%d; mac:%s\n', |
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| 147 | lambda: (port.number, vid, mac.encode('hex'))) |
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[166] | 148 | if not self._dict[vid]: |
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| 149 | del self._dict[vid] |
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[164] | 150 | |
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| 151 | |
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[183] | 152 | class SwitchPort(object): |
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| 153 | def __init__(self, number, interface): |
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| 154 | self.number = number |
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| 155 | self.interface = interface |
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| 156 | self.tx = 0 |
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| 157 | self.rx = 0 |
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| 158 | self.shut = False |
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| 159 | |
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| 160 | @staticmethod |
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| 161 | def cmp_by_number(x, y): |
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| 162 | return cmp(x.number, y.number) |
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| 163 | |
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| 164 | |
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[166] | 165 | class SwitchingHub(DebugMixIn): |
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| 166 | def __init__(self, fdb, debug=False): |
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| 167 | self._fdb = fdb |
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[133] | 168 | self._debug = debug |
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[183] | 169 | self._table = {} |
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| 170 | self._next = 1 |
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[133] | 171 | |
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[183] | 172 | @property |
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| 173 | def portlist(self): |
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| 174 | return sorted(self._table.itervalues(), cmp=SwitchPort.cmp_by_number) |
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[133] | 175 | |
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[183] | 176 | def get_port(self, portnum): |
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| 177 | return self._table[portnum] |
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| 178 | |
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| 179 | def register_port(self, interface): |
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[186] | 180 | try: |
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| 181 | interface._switch_portnum = self._next # XXX |
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| 182 | self._table[self._next] = SwitchPort(self._next, interface) |
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| 183 | return self._next |
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| 184 | finally: |
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| 185 | self._next += 1 |
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[183] | 186 | |
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| 187 | def unregister_port(self, interface): |
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| 188 | self._fdb.delete(self._table[interface._switch_portnum]) |
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| 189 | del self._table[interface._switch_portnum] |
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| 190 | del interface._switch_portnum |
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| 191 | |
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| 192 | def send(self, dst_interfaces, frame): |
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| 193 | ports = sorted((self._table[i._switch_portnum] for i in dst_interfaces |
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| 194 | if not self._table[i._switch_portnum].shut), |
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| 195 | cmp=SwitchPort.cmp_by_number) |
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| 196 | |
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| 197 | for p in ports: |
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| 198 | p.interface.write_message(frame.data, True) |
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| 199 | p.tx += 1 |
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| 200 | |
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| 201 | if ports: |
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| 202 | self.dprintf('sent: port:%s; vid:%d; %s -> %s\n', |
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| 203 | lambda: (','.join(str(p.number) for p in ports), |
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| 204 | frame.vid, |
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| 205 | frame.src_mac.encode('hex'), |
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| 206 | frame.dst_mac.encode('hex'))) |
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| 207 | |
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| 208 | def receive(self, src_interface, frame): |
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| 209 | port = self._table[src_interface._switch_portnum] |
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| 210 | |
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| 211 | if not port.shut: |
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| 212 | port.rx += 1 |
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| 213 | self._forward(port, frame) |
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| 214 | |
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| 215 | def _forward(self, src_port, frame): |
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[166] | 216 | try: |
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[176] | 217 | if not frame.src_multicast: |
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[172] | 218 | self._fdb.learn(src_port, frame) |
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[133] | 219 | |
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[176] | 220 | if not frame.dst_multicast: |
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[166] | 221 | dst_port = self._fdb.lookup(frame) |
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[164] | 222 | |
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[166] | 223 | if dst_port: |
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[183] | 224 | self.send([dst_port.interface], frame) |
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[166] | 225 | return |
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[133] | 226 | |
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[183] | 227 | ports = set(self._table.itervalues()) - set([src_port]) |
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| 228 | self.send((p.interface for p in ports), frame) |
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[162] | 229 | |
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[166] | 230 | except: # ex. received invalid frame |
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| 231 | traceback.print_exc() |
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[133] | 232 | |
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[164] | 233 | |
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[179] | 234 | class Htpasswd(object): |
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| 235 | def __init__(self, path): |
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| 236 | self._path = path |
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| 237 | self._stat = None |
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| 238 | self._data = {} |
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| 239 | |
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| 240 | def auth(self, name, passwd): |
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| 241 | passwd = base64.b64encode(hashlib.sha1(passwd).digest()) |
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| 242 | return self._data.get(name) == passwd |
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| 243 | |
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| 244 | def load(self): |
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| 245 | old_stat = self._stat |
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| 246 | |
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| 247 | with open(self._path) as fp: |
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| 248 | fileno = fp.fileno() |
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| 249 | fcntl.flock(fileno, fcntl.LOCK_SH | fcntl.LOCK_NB) |
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| 250 | self._stat = os.fstat(fileno) |
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| 251 | |
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| 252 | unchanged = old_stat and \ |
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| 253 | old_stat.st_ino == self._stat.st_ino and \ |
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| 254 | old_stat.st_dev == self._stat.st_dev and \ |
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| 255 | old_stat.st_mtime == self._stat.st_mtime |
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| 256 | |
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| 257 | if not unchanged: |
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| 258 | self._data = self._parse(fp) |
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| 259 | |
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| 260 | return self |
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| 261 | |
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| 262 | def _parse(self, fp): |
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| 263 | data = {} |
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| 264 | for line in fp: |
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| 265 | line = line.strip() |
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| 266 | if 0 <= line.find(':'): |
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| 267 | name, passwd = line.split(':', 1) |
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| 268 | if passwd.startswith('{SHA}'): |
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| 269 | data[name] = passwd[5:] |
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| 270 | return data |
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| 271 | |
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| 272 | |
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[182] | 273 | class BasicAuthMixIn(object): |
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| 274 | def _execute(self, transforms, *args, **kwargs): |
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| 275 | def do_execute(): |
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| 276 | sp = super(BasicAuthMixIn, self) |
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| 277 | return sp._execute(transforms, *args, **kwargs) |
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| 278 | |
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| 279 | def auth_required(): |
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[185] | 280 | stream = getattr(self, 'stream', self.request.connection.stream) |
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| 281 | stream.write(tornado.escape.utf8( |
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[182] | 282 | 'HTTP/1.1 401 Authorization Required\r\n' |
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| 283 | 'WWW-Authenticate: Basic realm=etherws\r\n\r\n' |
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| 284 | )) |
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[185] | 285 | stream.close() |
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[182] | 286 | |
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| 287 | try: |
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| 288 | if not self._htpasswd: |
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| 289 | return do_execute() |
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| 290 | |
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| 291 | creds = self.request.headers.get('Authorization') |
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| 292 | |
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| 293 | if not creds or not creds.startswith('Basic '): |
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| 294 | return auth_required() |
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| 295 | |
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| 296 | name, passwd = base64.b64decode(creds[6:]).split(':', 1) |
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| 297 | |
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| 298 | if self._htpasswd.load().auth(name, passwd): |
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| 299 | return do_execute() |
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| 300 | except: |
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| 301 | traceback.print_exc() |
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| 302 | |
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| 303 | return auth_required() |
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| 304 | |
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| 305 | |
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[186] | 306 | class EtherWebSocketHandler(DebugMixIn, BasicAuthMixIn, WebSocketHandler): |
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| 307 | def __init__(self, app, req, switch, htpasswd=None, debug=False): |
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| 308 | super(EtherWebSocketHandler, self).__init__(app, req) |
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| 309 | self._switch = switch |
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| 310 | self._htpasswd = htpasswd |
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| 311 | self._debug = debug |
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| 312 | |
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| 313 | @classmethod |
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| 314 | def get_type(cls): |
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| 315 | return 'server' |
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| 316 | |
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| 317 | def get_target(self): |
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| 318 | return self.request.remote_ip |
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| 319 | |
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| 320 | def open(self): |
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| 321 | try: |
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| 322 | return self._switch.register_port(self) |
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| 323 | finally: |
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| 324 | self.dprintf('connected: %s\n', lambda: self.request.remote_ip) |
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| 325 | |
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| 326 | def on_message(self, message): |
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| 327 | self._switch.receive(self, EthernetFrame(message)) |
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| 328 | |
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| 329 | def on_close(self): |
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| 330 | self._switch.unregister_port(self) |
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| 331 | self.dprintf('disconnected: %s\n', lambda: self.request.remote_ip) |
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| 332 | |
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| 333 | |
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[166] | 334 | class TapHandler(DebugMixIn): |
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| 335 | READ_SIZE = 65535 |
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| 336 | |
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[178] | 337 | def __init__(self, ioloop, switch, dev, debug=False): |
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| 338 | self._ioloop = ioloop |
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[166] | 339 | self._switch = switch |
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| 340 | self._dev = dev |
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| 341 | self._debug = debug |
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| 342 | self._tap = None |
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| 343 | |
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[186] | 344 | @classmethod |
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| 345 | def get_type(cls): |
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[183] | 346 | return 'tap' |
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| 347 | |
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[186] | 348 | def get_target(self): |
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[183] | 349 | if self.closed: |
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| 350 | return self._dev |
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| 351 | return self._tap.name |
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| 352 | |
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[186] | 353 | @property |
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| 354 | def closed(self): |
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| 355 | return not self._tap |
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| 356 | |
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[166] | 357 | def open(self): |
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| 358 | if not self.closed: |
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| 359 | raise ValueError('already opened') |
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| 360 | self._tap = TunTapDevice(self._dev, IFF_TAP | IFF_NO_PI) |
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| 361 | self._tap.up() |
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[178] | 362 | self._ioloop.add_handler(self.fileno(), self, self._ioloop.READ) |
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[186] | 363 | return self._switch.register_port(self) |
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[166] | 364 | |
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| 365 | def close(self): |
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| 366 | if self.closed: |
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| 367 | raise ValueError('I/O operation on closed tap') |
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[186] | 368 | self._switch.unregister_port(self) |
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[178] | 369 | self._ioloop.remove_handler(self.fileno()) |
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[166] | 370 | self._tap.close() |
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| 371 | self._tap = None |
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| 372 | |
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| 373 | def fileno(self): |
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| 374 | if self.closed: |
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| 375 | raise ValueError('I/O operation on closed tap') |
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| 376 | return self._tap.fileno() |
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| 377 | |
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| 378 | def write_message(self, message, binary=False): |
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| 379 | if self.closed: |
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| 380 | raise ValueError('I/O operation on closed tap') |
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| 381 | self._tap.write(message) |
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| 382 | |
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[138] | 383 | def __call__(self, fd, events): |
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[166] | 384 | try: |
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[183] | 385 | self._switch.receive(self, EthernetFrame(self._read())) |
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[166] | 386 | return |
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| 387 | except: |
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| 388 | traceback.print_exc() |
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[178] | 389 | self.close() |
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[166] | 390 | |
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| 391 | def _read(self): |
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| 392 | if self.closed: |
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| 393 | raise ValueError('I/O operation on closed tap') |
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[162] | 394 | buf = [] |
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| 395 | while True: |
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[166] | 396 | buf.append(self._tap.read(self.READ_SIZE)) |
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| 397 | if len(buf[-1]) < self.READ_SIZE: |
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[162] | 398 | break |
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[166] | 399 | return ''.join(buf) |
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[162] | 400 | |
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| 401 | |
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[160] | 402 | class EtherWebSocketClient(DebugMixIn): |
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[181] | 403 | def __init__(self, ioloop, switch, url, ssl_=None, cred=None, debug=False): |
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[178] | 404 | self._ioloop = ioloop |
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[166] | 405 | self._switch = switch |
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[151] | 406 | self._url = url |
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[181] | 407 | self._ssl = ssl_ |
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[160] | 408 | self._debug = debug |
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[166] | 409 | self._sock = None |
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[151] | 410 | self._options = {} |
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| 411 | |
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[174] | 412 | if isinstance(cred, dict) and cred['user'] and cred['passwd']: |
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| 413 | token = base64.b64encode('%s:%s' % (cred['user'], cred['passwd'])) |
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[151] | 414 | auth = ['Authorization: Basic %s' % token] |
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| 415 | self._options['header'] = auth |
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| 416 | |
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[186] | 417 | @classmethod |
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| 418 | def get_type(cls): |
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| 419 | return 'client' |
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| 420 | |
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| 421 | def get_target(self): |
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| 422 | return self._url |
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| 423 | |
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[160] | 424 | @property |
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| 425 | def closed(self): |
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| 426 | return not self._sock |
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| 427 | |
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[151] | 428 | def open(self): |
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[181] | 429 | sslwrap = websocket._SSLSocketWrapper |
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| 430 | |
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[160] | 431 | if not self.closed: |
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| 432 | raise websocket.WebSocketException('already opened') |
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[151] | 433 | |
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[181] | 434 | if self._ssl: |
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| 435 | websocket._SSLSocketWrapper = self._ssl |
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| 436 | |
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| 437 | try: |
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| 438 | self._sock = websocket.WebSocket() |
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| 439 | self._sock.connect(self._url, **self._options) |
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| 440 | self._ioloop.add_handler(self.fileno(), self, self._ioloop.READ) |
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[186] | 441 | return self._switch.register_port(self) |
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[181] | 442 | finally: |
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| 443 | websocket._SSLSocketWrapper = sslwrap |
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[186] | 444 | self.dprintf('connected: %s\n', lambda: self._url) |
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[181] | 445 | |
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[151] | 446 | def close(self): |
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[160] | 447 | if self.closed: |
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| 448 | raise websocket.WebSocketException('already closed') |
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[186] | 449 | self._switch.unregister_port(self) |
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[178] | 450 | self._ioloop.remove_handler(self.fileno()) |
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[151] | 451 | self._sock.close() |
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| 452 | self._sock = None |
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[164] | 453 | self.dprintf('disconnected: %s\n', lambda: self._url) |
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[151] | 454 | |
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[165] | 455 | def fileno(self): |
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| 456 | if self.closed: |
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| 457 | raise websocket.WebSocketException('closed socket') |
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| 458 | return self._sock.io_sock.fileno() |
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| 459 | |
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[151] | 460 | def write_message(self, message, binary=False): |
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[160] | 461 | if self.closed: |
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| 462 | raise websocket.WebSocketException('closed socket') |
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[151] | 463 | if binary: |
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| 464 | flag = websocket.ABNF.OPCODE_BINARY |
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[160] | 465 | else: |
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| 466 | flag = websocket.ABNF.OPCODE_TEXT |
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[151] | 467 | self._sock.send(message, flag) |
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| 468 | |
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[165] | 469 | def __call__(self, fd, events): |
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[151] | 470 | try: |
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[165] | 471 | data = self._sock.recv() |
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| 472 | if data is not None: |
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[183] | 473 | self._switch.receive(self, EthernetFrame(data)) |
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[165] | 474 | return |
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| 475 | except: |
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| 476 | traceback.print_exc() |
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[178] | 477 | self.close() |
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[151] | 478 | |
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| 479 | |
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[183] | 480 | class EtherWebSocketControlHandler(DebugMixIn, BasicAuthMixIn, RequestHandler): |
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| 481 | NAMESPACE = 'etherws.control' |
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[186] | 482 | INTERFACES = { |
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| 483 | TapHandler.get_type(): TapHandler, |
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| 484 | EtherWebSocketClient.get_type(): EtherWebSocketClient, |
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| 485 | } |
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[183] | 486 | |
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| 487 | def __init__(self, app, req, ioloop, switch, htpasswd=None, debug=False): |
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| 488 | super(EtherWebSocketControlHandler, self).__init__(app, req) |
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| 489 | self._ioloop = ioloop |
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| 490 | self._switch = switch |
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| 491 | self._htpasswd = htpasswd |
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| 492 | self._debug = debug |
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| 493 | |
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| 494 | def post(self): |
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| 495 | id_ = None |
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| 496 | |
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| 497 | try: |
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| 498 | req = json.loads(self.request.body) |
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| 499 | method = req['method'] |
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| 500 | params = req['params'] |
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| 501 | id_ = req.get('id') |
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| 502 | |
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| 503 | if not method.startswith(self.NAMESPACE + '.'): |
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| 504 | raise ValueError('invalid method: %s' % method) |
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| 505 | |
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| 506 | if not isinstance(params, list): |
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| 507 | raise ValueError('invalid params: %s' % params) |
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| 508 | |
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| 509 | handler = 'handle_' + method[len(self.NAMESPACE) + 1:] |
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| 510 | result = getattr(self, handler)(params) |
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| 511 | self.finish({'result': result, 'error': None, 'id': id_}) |
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| 512 | |
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| 513 | except Exception as e: |
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| 514 | traceback.print_exc() |
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| 515 | self.finish({'result': None, 'error': str(e), 'id': id_}) |
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| 516 | |
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| 517 | def handle_listPort(self, params): |
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| 518 | list_ = [] |
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| 519 | for port in self._switch.portlist: |
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[186] | 520 | list_.append(self._portstat(port)) |
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[183] | 521 | return {'portlist': list_} |
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| 522 | |
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| 523 | def handle_addPort(self, params): |
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[186] | 524 | list_ = [] |
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[183] | 525 | for p in params: |
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[186] | 526 | type_ = p['type'] |
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| 527 | target = p['target'] |
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| 528 | options = getattr(self, '_optparse_' + type_)(p.get('options', {})) |
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| 529 | klass = self.INTERFACES[type_] |
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| 530 | interface = klass(self._ioloop, self._switch, target, **options) |
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| 531 | portnum = interface.open() |
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| 532 | list_.append(self._portstat(self._switch.get_port(portnum))) |
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| 533 | return {'portlist': list_} |
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[183] | 534 | |
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| 535 | def handle_delPort(self, params): |
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[186] | 536 | list_ = [] |
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[183] | 537 | for p in params: |
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[186] | 538 | port = self._switch.get_port(int(p['port'])) |
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| 539 | list_.append(self._portstat(port)) |
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| 540 | port.interface.close() |
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| 541 | return {'portlist': list_} |
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[183] | 542 | |
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| 543 | def handle_shutPort(self, params): |
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[186] | 544 | list_ = [] |
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[183] | 545 | for p in params: |
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[186] | 546 | port = self._switch.get_port(int(p['port'])) |
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| 547 | port.shut = bool(p['flag']) |
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| 548 | list_.append(self._portstat(port)) |
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| 549 | return {'portlist': list_} |
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[183] | 550 | |
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[186] | 551 | def _optparse_tap(self, opt): |
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| 552 | return {'debug': self._debug} |
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[183] | 553 | |
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[186] | 554 | def _optparse_client(self, opt): |
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| 555 | args = {'cert_reqs': ssl.CERT_REQUIRED, 'ca_certs': opt.get('cacerts')} |
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| 556 | if opt.get('insecure'): |
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| 557 | args = {} |
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| 558 | ssl_ = lambda sock: ssl.wrap_socket(sock, **args) |
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| 559 | cred = {'user': opt.get('user'), 'passwd': opt.get('passwd')} |
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| 560 | return {'ssl_': ssl_, 'cred': cred, 'debug': self._debug} |
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[183] | 561 | |
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| 562 | @staticmethod |
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[186] | 563 | def _portstat(port): |
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| 564 | return { |
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| 565 | 'port': port.number, |
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| 566 | 'type': port.interface.get_type(), |
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| 567 | 'target': port.interface.get_target(), |
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| 568 | 'tx': port.tx, |
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| 569 | 'rx': port.rx, |
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| 570 | 'shut': port.shut, |
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| 571 | } |
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[183] | 572 | |
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| 573 | |
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[186] | 574 | def start_switch(args): |
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| 575 | def daemonize(nochdir=False, noclose=False): |
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| 576 | if os.fork() > 0: |
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| 577 | sys.exit(0) |
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[134] | 578 | |
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[186] | 579 | os.setsid() |
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[134] | 580 | |
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[186] | 581 | if os.fork() > 0: |
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| 582 | sys.exit(0) |
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[134] | 583 | |
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[186] | 584 | if not nochdir: |
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| 585 | os.chdir('/') |
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[134] | 586 | |
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[186] | 587 | if not noclose: |
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| 588 | os.umask(0) |
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| 589 | sys.stdin.close() |
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| 590 | sys.stdout.close() |
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| 591 | sys.stderr.close() |
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| 592 | os.close(0) |
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| 593 | os.close(1) |
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| 594 | os.close(2) |
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| 595 | sys.stdin = open(os.devnull) |
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| 596 | sys.stdout = open(os.devnull, 'a') |
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| 597 | sys.stderr = open(os.devnull, 'a') |
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[134] | 598 | |
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[186] | 599 | def checkabspath(ns, path): |
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[184] | 600 | val = getattr(ns, path, '') |
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| 601 | if not val.startswith('/'): |
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| 602 | raise ValueError('invalid %: %s' % (path, val)) |
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| 603 | |
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| 604 | def getsslopt(ns, key, cert): |
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| 605 | kval = getattr(ns, key, None) |
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| 606 | cval = getattr(ns, cert, None) |
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| 607 | if kval and cval: |
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| 608 | return {'keyfile': kval, 'certfile': cval} |
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| 609 | elif kval or cval: |
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| 610 | raise ValueError('both %s and %s are required' % (key, cert)) |
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| 611 | return None |
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| 612 | |
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[186] | 613 | def setrealpath(ns, *keys): |
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| 614 | for k in keys: |
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| 615 | v = getattr(ns, k, None) |
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| 616 | if v is not None: |
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| 617 | v = os.path.realpath(v) |
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| 618 | open(v).close() # check readable |
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| 619 | setattr(ns, k, v) |
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| 620 | |
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[184] | 621 | def setport(ns, port, isssl): |
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| 622 | val = getattr(ns, port, None) |
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| 623 | if val is None: |
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| 624 | if isssl: |
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| 625 | return setattr(ns, port, 443) |
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| 626 | return setattr(ns, port, 80) |
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| 627 | if not (0 <= val <= 65535): |
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| 628 | raise ValueError('invalid %s: %s' % (port, val)) |
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| 629 | |
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| 630 | def sethtpasswd(ns, htpasswd): |
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| 631 | val = getattr(ns, htpasswd, None) |
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| 632 | if val: |
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| 633 | return setattr(ns, htpasswd, Htpasswd(val)) |
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| 634 | |
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[183] | 635 | #if args.debug: |
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| 636 | # websocket.enableTrace(True) |
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| 637 | |
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| 638 | if args.ageout <= 0: |
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| 639 | raise ValueError('invalid ageout: %s' % args.ageout) |
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| 640 | |
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[186] | 641 | setrealpath(args, 'htpasswd', 'sslkey', 'sslcert') |
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| 642 | setrealpath(args, 'ctlhtpasswd', 'ctlsslkey', 'ctlsslcert') |
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[183] | 643 | |
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[186] | 644 | checkabspath(args, 'path') |
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| 645 | checkabspath(args, 'ctlpath') |
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[183] | 646 | |
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[184] | 647 | sslopt = getsslopt(args, 'sslkey', 'sslcert') |
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| 648 | ctlsslopt = getsslopt(args, 'ctlsslkey', 'ctlsslcert') |
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[143] | 649 | |
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[184] | 650 | setport(args, 'port', sslopt) |
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| 651 | setport(args, 'ctlport', ctlsslopt) |
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[143] | 652 | |
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[184] | 653 | sethtpasswd(args, 'htpasswd') |
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| 654 | sethtpasswd(args, 'ctlhtpasswd') |
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[167] | 655 | |
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[183] | 656 | ioloop = IOLoop.instance() |
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[167] | 657 | fdb = FDB(ageout=args.ageout, debug=args.debug) |
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[183] | 658 | switch = SwitchingHub(fdb, debug=args.debug) |
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[167] | 659 | |
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[184] | 660 | if args.port == args.ctlport and args.host == args.ctlhost: |
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| 661 | if args.path == args.ctlpath: |
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| 662 | raise ValueError('same path/ctlpath on same host') |
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| 663 | if args.sslkey != args.ctlsslkey: |
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| 664 | raise ValueError('differ sslkey/ctlsslkey on same host') |
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| 665 | if args.sslcert != args.ctlsslcert: |
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| 666 | raise ValueError('differ sslcert/ctlsslcert on same host') |
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[133] | 667 | |
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[184] | 668 | app = Application([ |
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| 669 | (args.path, EtherWebSocketHandler, { |
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| 670 | 'switch': switch, |
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| 671 | 'htpasswd': args.htpasswd, |
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| 672 | 'debug': args.debug, |
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| 673 | }), |
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| 674 | (args.ctlpath, EtherWebSocketControlHandler, { |
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| 675 | 'ioloop': ioloop, |
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| 676 | 'switch': switch, |
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| 677 | 'htpasswd': args.ctlhtpasswd, |
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| 678 | 'debug': args.debug, |
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| 679 | }), |
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| 680 | ]) |
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| 681 | server = HTTPServer(app, ssl_options=sslopt) |
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| 682 | server.listen(args.port, address=args.host) |
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[151] | 683 | |
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[184] | 684 | else: |
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| 685 | app = Application([(args.path, EtherWebSocketHandler, { |
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| 686 | 'switch': switch, |
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| 687 | 'htpasswd': args.htpasswd, |
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| 688 | 'debug': args.debug, |
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| 689 | })]) |
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| 690 | server = HTTPServer(app, ssl_options=sslopt) |
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| 691 | server.listen(args.port, address=args.host) |
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| 692 | |
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| 693 | ctl = Application([(args.ctlpath, EtherWebSocketControlHandler, { |
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| 694 | 'ioloop': ioloop, |
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| 695 | 'switch': switch, |
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| 696 | 'htpasswd': args.ctlhtpasswd, |
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| 697 | 'debug': args.debug, |
---|
| 698 | })]) |
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| 699 | ctlserver = HTTPServer(ctl, ssl_options=ctlsslopt) |
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| 700 | ctlserver.listen(args.ctlport, address=args.ctlhost) |
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| 701 | |
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[151] | 702 | if not args.foreground: |
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| 703 | daemonize() |
---|
| 704 | |
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[138] | 705 | ioloop.start() |
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[133] | 706 | |
---|
| 707 | |
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[186] | 708 | def main(): |
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| 709 | parser = argparse.ArgumentParser() |
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| 710 | subparsers = parser.add_subparsers(dest='subcommand') |
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| 711 | parser_s = subparsers.add_parser('switch') |
---|
| 712 | parser_c = subparsers.add_parser('control') |
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| 713 | |
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| 714 | parser_s.add_argument('--debug', action='store_true', default=False) |
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| 715 | parser_s.add_argument('--foreground', action='store_true', default=False) |
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| 716 | parser_s.add_argument('--ageout', action='store', type=int, default=300) |
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| 717 | |
---|
| 718 | parser_s.add_argument('--path', action='store', default='/') |
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| 719 | parser_s.add_argument('--host', action='store', default='') |
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| 720 | parser_s.add_argument('--port', action='store', type=int) |
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| 721 | parser_s.add_argument('--htpasswd', action='store') |
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| 722 | parser_s.add_argument('--sslkey', action='store') |
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| 723 | parser_s.add_argument('--sslcert', action='store') |
---|
| 724 | |
---|
| 725 | parser_s.add_argument('--ctlpath', action='store', default='/ctl') |
---|
| 726 | parser_s.add_argument('--ctlhost', action='store', default='') |
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| 727 | parser_s.add_argument('--ctlport', action='store', type=int) |
---|
| 728 | parser_s.add_argument('--ctlhtpasswd', action='store') |
---|
| 729 | parser_s.add_argument('--ctlsslkey', action='store') |
---|
| 730 | parser_s.add_argument('--ctlsslcert', action='store') |
---|
| 731 | |
---|
| 732 | args = parser.parse_args() |
---|
| 733 | |
---|
| 734 | globals()['start_' + args.subcommand](args) |
---|
| 735 | |
---|
| 736 | |
---|
[133] | 737 | if __name__ == '__main__': |
---|
| 738 | main() |
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