Mercurial > libervia-backend
annotate src/plugins/plugin_xep_0065.py @ 398:cb0285372818
File transfer:
- proxy managed in XEP-0065 (Socks5 bytestream)
- bug: fixed a bad id used during stream negociation
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Wed, 05 Oct 2011 16:49:57 +0200 |
| parents | 8f3551ceee17 |
| children | c513328ade9d |
| rev | line source |
|---|---|
| 0 | 1 #!/usr/bin/python |
| 2 #-*- coding: utf-8 -*- | |
| 3 """ | |
| 4 SAT plugin for managing xep-0065 | |
| 5 | |
| 6 Copyright (C) | |
|
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7 2002, 2003, 2004 Dave Smith (dizzyd@jabber.org) |
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8 2007, 2008 Fabio Forno (xmpp:ff@jabber.bluendo.com) |
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9 2009, 2010, 2011 Jérôme Poisson (goffi@goffi.org) |
| 0 | 10 |
| 11 This program is free software: you can redistribute it and/or modify | |
| 12 it under the terms of the GNU General Public License as published by | |
| 13 the Free Software Foundation, either version 3 of the License, or | |
| 14 (at your option) any later version. | |
| 15 | |
| 16 This program is distributed in the hope that it will be useful, | |
| 17 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 19 GNU General Public License for more details. | |
| 20 | |
| 21 You should have received a copy of the GNU General Public License | |
| 22 along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 23 | |
| 24 -- | |
| 25 | |
| 26 This program is based on proxy65 (http://code.google.com/p/proxy65), | |
| 27 originaly written by David Smith and modified by Fabio Forno. | |
| 28 It is sublicensed under GPL v3 (or any later version) as allowed by the original | |
| 29 license. | |
| 30 | |
| 31 -- | |
| 32 | |
| 33 Here is a copy of the original license: | |
| 34 | |
| 35 Copyright (C) | |
| 36 2002-2004 Dave Smith (dizzyd@jabber.org) | |
| 37 2007-2008 Fabio Forno (xmpp:ff@jabber.bluendo.com) | |
| 38 | |
| 39 Permission is hereby granted, free of charge, to any person obtaining a copy | |
| 40 of this software and associated documentation files (the "Software"), to deal | |
| 41 in the Software without restriction, including without limitation the rights | |
| 42 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
| 43 copies of the Software, and to permit persons to whom the Software is | |
| 44 furnished to do so, subject to the following conditions: | |
| 45 | |
| 46 The above copyright notice and this permission notice shall be included in | |
| 47 all copies or substantial portions of the Software. | |
| 48 | |
| 49 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| 50 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| 51 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
| 52 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
| 53 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
| 54 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
| 55 THE SOFTWARE. | |
| 56 """ | |
| 57 | |
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58 from logging import debug, info, warning, error |
| 0 | 59 from twisted.internet import protocol, reactor |
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60 from twisted.internet import error as jab_error |
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61 from twisted.words.protocols.jabber import client, jid |
| 0 | 62 from twisted.protocols.basic import FileSender |
| 63 from twisted.words.xish import domish | |
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64 from twisted.web.client import getPage |
| 0 | 65 import struct |
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66 import urllib |
| 0 | 67 import hashlib, pdb |
| 68 | |
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69 from zope.interface import implements |
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70 |
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71 try: |
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72 from twisted.words.protocols.xmlstream import XMPPHandler |
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73 except ImportError: |
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74 from wokkel.subprotocols import XMPPHandler |
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75 |
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76 from wokkel import disco, iwokkel |
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77 |
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78 IQ_SET = '/iq[@type="set"]' |
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79 NS_BS = 'http://jabber.org/protocol/bytestreams' |
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80 BS_REQUEST = IQ_SET + '/query[@xmlns="' + NS_BS + '"]' |
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81 TIMEOUT = 60 #timeout for workflow |
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82 |
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83 |
| 0 | 84 |
| 85 PLUGIN_INFO = { | |
| 86 "name": "XEP 0065 Plugin", | |
| 291 | 87 "import_name": "XEP-0065", |
| 0 | 88 "type": "XEP", |
| 48 | 89 "protocols": ["XEP-0065"], |
| 0 | 90 "main": "XEP_0065", |
| 64 | 91 "handler": "yes", |
| 69 | 92 "description": _("""Implementation of SOCKS5 Bytestreams""") |
| 0 | 93 } |
| 94 | |
| 95 STATE_INITIAL = 0 | |
| 96 STATE_AUTH = 1 | |
| 97 STATE_REQUEST = 2 | |
| 98 STATE_READY = 3 | |
| 99 STATE_AUTH_USERPASS = 4 | |
| 100 STATE_TARGET_INITIAL = 5 | |
| 101 STATE_TARGET_AUTH = 6 | |
| 102 STATE_TARGET_REQUEST = 7 | |
| 103 STATE_TARGET_READY = 8 | |
| 104 STATE_LAST = 9 | |
| 105 | |
| 106 STATE_CONNECT_PENDING = STATE_LAST + 1 | |
| 107 | |
| 108 SOCKS5_VER = 0x05 | |
| 109 | |
| 110 ADDR_IPV4 = 0x01 | |
| 111 ADDR_DOMAINNAME = 0x03 | |
| 112 ADDR_IPV6 = 0x04 | |
| 113 | |
| 114 CMD_CONNECT = 0x01 | |
| 115 CMD_BIND = 0x02 | |
| 116 CMD_UDPASSOC = 0x03 | |
| 117 | |
| 118 AUTHMECH_ANON = 0x00 | |
| 119 AUTHMECH_USERPASS = 0x02 | |
| 120 AUTHMECH_INVALID = 0xFF | |
| 121 | |
| 122 REPLY_SUCCESS = 0x00 | |
| 123 REPLY_GENERAL_FAILUR = 0x01 | |
| 124 REPLY_CONN_NOT_ALLOWED = 0x02 | |
| 125 REPLY_NETWORK_UNREACHABLE = 0x03 | |
| 126 REPLY_HOST_UNREACHABLE = 0x04 | |
| 127 REPLY_CONN_REFUSED = 0x05 | |
| 128 REPLY_TTL_EXPIRED = 0x06 | |
| 129 REPLY_CMD_NOT_SUPPORTED = 0x07 | |
| 130 REPLY_ADDR_NOT_SUPPORTED = 0x08 | |
| 131 | |
| 132 | |
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133 def calculateHash(from_jid, to_jid, sid): |
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134 """Calculate SHA1 Hash according to XEP-0065 |
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135 @param from_jid: jid of the requester |
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136 @param to_jid: jid of the target |
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137 @param sid: session id |
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138 @return: hash (string)""" |
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139 return hashlib.sha1((sid + from_jid.full() + to_jid.full()).encode('utf-8')).hexdigest() |
| 0 | 140 |
| 141 | |
| 142 | |
| 143 class SOCKSv5(protocol.Protocol, FileSender): | |
| 144 def __init__(self): | |
| 69 | 145 debug(_("Protocol init")) |
| 0 | 146 self.state = STATE_INITIAL |
| 147 self.buf = "" | |
| 148 self.supportedAuthMechs = [ AUTHMECH_ANON ] | |
| 149 self.supportedAddrs = [ ADDR_DOMAINNAME ] | |
| 150 self.enabledCommands = [ CMD_CONNECT ] | |
| 151 self.peersock = None | |
| 152 self.addressType = 0 | |
| 153 self.requestType = 0 | |
| 154 | |
| 155 def _startNegotiation(self): | |
| 156 debug("_startNegotiation") | |
| 157 self.state = STATE_TARGET_AUTH | |
| 158 self.transport.write(struct.pack('!3B', SOCKS5_VER, 1, AUTHMECH_ANON)) | |
| 159 | |
| 160 def _parseNegotiation(self): | |
| 161 debug("_parseNegotiation") | |
| 162 try: | |
| 163 # Parse out data | |
| 164 ver, nmethod = struct.unpack('!BB', self.buf[:2]) | |
| 165 methods = struct.unpack('%dB' % nmethod, self.buf[2:nmethod+2]) | |
| 166 | |
| 167 # Ensure version is correct | |
| 168 if ver != 5: | |
| 169 self.transport.write(struct.pack('!BB', SOCKS5_VER, AUTHMECH_INVALID)) | |
| 170 self.transport.loseConnection() | |
| 171 return | |
| 172 | |
| 173 # Trim off front of the buffer | |
| 174 self.buf = self.buf[nmethod+2:] | |
| 175 | |
| 176 # Check for supported auth mechs | |
| 177 for m in self.supportedAuthMechs: | |
| 178 if m in methods: | |
| 179 # Update internal state, according to selected method | |
| 180 if m == AUTHMECH_ANON: | |
| 181 self.state = STATE_REQUEST | |
| 182 elif m == AUTHMECH_USERPASS: | |
| 183 self.state = STATE_AUTH_USERPASS | |
| 184 # Complete negotiation w/ this method | |
| 185 self.transport.write(struct.pack('!BB', SOCKS5_VER, m)) | |
| 186 return | |
| 187 | |
| 188 # No supported mechs found, notify client and close the connection | |
| 189 self.transport.write(struct.pack('!BB', SOCKS5_VER, AUTHMECH_INVALID)) | |
| 190 self.transport.loseConnection() | |
| 191 except struct.error: | |
| 192 pass | |
| 193 | |
| 194 def _parseUserPass(self): | |
| 195 debug("_parseUserPass") | |
| 196 try: | |
| 197 # Parse out data | |
| 198 ver, ulen = struct.unpack('BB', self.buf[:2]) | |
| 199 uname, = struct.unpack('%ds' % ulen, self.buf[2:ulen + 2]) | |
| 200 plen, = struct.unpack('B', self.buf[ulen + 2]) | |
| 201 password, = struct.unpack('%ds' % plen, self.buf[ulen + 3:ulen + 3 + plen]) | |
| 202 # Trim off fron of the buffer | |
| 203 self.buf = self.buf[3 + ulen + plen:] | |
| 204 # Fire event to authenticate user | |
| 205 if self.authenticateUserPass(uname, password): | |
| 206 # Signal success | |
| 207 self.state = STATE_REQUEST | |
| 208 self.transport.write(struct.pack('!BB', SOCKS5_VER, 0x00)) | |
| 209 else: | |
| 210 # Signal failure | |
| 211 self.transport.write(struct.pack('!BB', SOCKS5_VER, 0x01)) | |
| 212 self.transport.loseConnection() | |
| 213 except struct.error: | |
| 214 pass | |
| 215 | |
| 216 def sendErrorReply(self, errorcode): | |
| 217 debug("sendErrorReply") | |
| 218 # Any other address types are not supported | |
| 219 result = struct.pack('!BBBBIH', SOCKS5_VER, errorcode, 0, 1, 0, 0) | |
| 220 self.transport.write(result) | |
| 221 self.transport.loseConnection() | |
| 222 | |
| 223 def _parseRequest(self): | |
| 224 debug("_parseRequest") | |
| 225 try: | |
| 226 # Parse out data and trim buffer accordingly | |
| 227 ver, cmd, rsvd, self.addressType = struct.unpack('!BBBB', self.buf[:4]) | |
| 228 | |
| 229 # Ensure we actually support the requested address type | |
| 230 if self.addressType not in self.supportedAddrs: | |
| 231 self.sendErrorReply(REPLY_ADDR_NOT_SUPPORTED) | |
| 232 return | |
| 233 | |
| 234 # Deal with addresses | |
| 235 if self.addressType == ADDR_IPV4: | |
| 236 addr, port = struct.unpack('!IH', self.buf[4:10]) | |
| 237 self.buf = self.buf[10:] | |
| 238 elif self.addressType == ADDR_DOMAINNAME: | |
| 239 nlen = ord(self.buf[4]) | |
| 240 addr, port = struct.unpack('!%dsH' % nlen, self.buf[5:]) | |
| 241 self.buf = self.buf[7 + len(addr):] | |
| 242 else: | |
| 243 # Any other address types are not supported | |
| 244 self.sendErrorReply(REPLY_ADDR_NOT_SUPPORTED) | |
| 245 return | |
| 246 | |
| 247 # Ensure command is supported | |
| 248 if cmd not in self.enabledCommands: | |
| 249 # Send a not supported error | |
| 250 self.sendErrorReply(REPLY_CMD_NOT_SUPPORTED) | |
| 251 return | |
| 252 | |
| 253 # Process the command | |
| 254 if cmd == CMD_CONNECT: | |
| 255 self.connectRequested(addr, port) | |
| 256 elif cmd == CMD_BIND: | |
| 257 self.bindRequested(addr, port) | |
| 258 else: | |
| 259 # Any other command is not supported | |
| 260 self.sendErrorReply(REPLY_CMD_NOT_SUPPORTED) | |
| 261 | |
| 262 except struct.error, why: | |
| 263 return None | |
| 264 | |
| 265 def _makeRequest(self): | |
| 266 debug("_makeRequest") | |
| 267 self.state = STATE_TARGET_REQUEST | |
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268 sha1 = calculateHash(self.data["from"], self.data["to"], self.sid) |
| 0 | 269 request = struct.pack('!5B%dsH' % len(sha1), SOCKS5_VER, CMD_CONNECT, 0, ADDR_DOMAINNAME, len(sha1), sha1, 0) |
| 270 self.transport.write(request) | |
| 271 | |
| 272 def _parseRequestReply(self): | |
| 273 debug("_parseRequestReply") | |
| 274 try: | |
| 275 ver, rep, rsvd, self.addressType = struct.unpack('!BBBB', self.buf[:4]) | |
| 276 # Ensure we actually support the requested address type | |
| 277 if self.addressType not in self.supportedAddrs: | |
| 278 self.sendErrorReply(REPLY_ADDR_NOT_SUPPORTED) | |
| 279 return | |
| 280 | |
| 281 # Deal with addresses | |
| 282 if self.addressType == ADDR_IPV4: | |
| 283 addr, port = struct.unpack('!IH', self.buf[4:10]) | |
| 284 self.buf = self.buf[10:] | |
| 285 elif self.addressType == ADDR_DOMAINNAME: | |
| 286 nlen = ord(self.buf[4]) | |
| 287 addr, port = struct.unpack('!%dsH' % nlen, self.buf[5:]) | |
| 288 self.buf = self.buf[7 + len(addr):] | |
| 289 else: | |
| 290 # Any other address types are not supported | |
| 291 self.sendErrorReply(REPLY_ADDR_NOT_SUPPORTED) | |
| 292 return | |
| 293 | |
| 294 # Ensure reply is OK | |
| 295 if rep != REPLY_SUCCESS: | |
| 296 self.loseConnection() | |
| 297 return | |
| 298 | |
| 398 | 299 if self.factory.proxy: |
| 300 self.state = STATE_READY | |
| 301 self.factory.activateCb(self.sid, self.factory.iq_id, self.startTransfer) | |
| 302 else: | |
| 303 self.state = STATE_TARGET_READY | |
| 304 self.factory.activateCb(self.sid, self.factory.iq_id) | |
| 0 | 305 |
| 306 except struct.error, why: | |
| 307 return None | |
| 308 | |
| 309 def connectionMade(self): | |
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310 debug("connectionMade (mode = %s)" % "requester" if isinstance(self.factory, Socks5ServerFactory) else "target") |
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311 |
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312 if isinstance(self.factory, Socks5ClientFactory): |
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313 self.sid = self.factory.sid |
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314 self.data = self.factory.data |
| 0 | 315 self.state = STATE_TARGET_INITIAL |
| 316 self._startNegotiation() | |
| 317 | |
| 318 def connectRequested(self, addr, port): | |
| 69 | 319 debug("connectRequested") |
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320 |
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321 # Check that this session if expected |
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322 if not self.factory.hash_sid_map.has_key(addr): |
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323 #no: we refuse it |
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324 self.sendErrorReply(socks5.REPLY_CONN_REFUSED) |
| 0 | 325 return |
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326 self.sid = self.factory.hash_sid_map[addr] |
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327 self.factory.current_stream[self.sid]["start_transfer_cb"] = self.startTransfer |
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328 self.connectCompleted(addr, 0) |
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329 self.transport.stopReading() |
| 0 | 330 |
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331 def startTransfer(self, file_obj): |
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332 """Callback called when the result iq is received""" |
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333 d = self.beginFileTransfer(file_obj, self.transport) |
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334 d.addCallback(self.fileTransfered) |
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335 |
| 0 | 336 def fileTransfered(self, d): |
| 69 | 337 info(_("File transfer completed, closing connection")) |
| 0 | 338 self.transport.loseConnection() |
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339 self.factory.finishedCb(self.sid, True) |
| 0 | 340 |
| 341 def connectCompleted(self, remotehost, remoteport): | |
| 342 debug("connectCompleted") | |
| 343 if self.addressType == ADDR_IPV4: | |
| 344 result = struct.pack('!BBBBIH', SOCKS5_VER, REPLY_SUCCESS, 0, 1, remotehost, remoteport) | |
| 345 elif self.addressType == ADDR_DOMAINNAME: | |
| 346 result = struct.pack('!BBBBB%dsH' % len(remotehost), SOCKS5_VER, REPLY_SUCCESS, 0, | |
| 347 ADDR_DOMAINNAME, len(remotehost), remotehost, remoteport) | |
| 348 self.transport.write(result) | |
| 349 self.state = STATE_READY | |
| 350 | |
| 351 def bindRequested(self, addr, port): | |
| 352 pass | |
| 353 | |
| 354 def authenticateUserPass(self, user, passwd): | |
| 355 debug("User/pass: %s/%s", user, passwd) | |
| 356 return True | |
| 357 | |
| 358 def dataReceived(self, buf): | |
| 359 if self.state == STATE_TARGET_READY: | |
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360 self.data["file_obj"].write(buf) |
| 0 | 361 return |
| 362 | |
| 363 self.buf = self.buf + buf | |
| 364 if self.state == STATE_INITIAL: | |
| 365 self._parseNegotiation() | |
| 366 if self.state == STATE_AUTH_USERPASS: | |
| 367 self._parseUserPass() | |
| 368 if self.state == STATE_REQUEST: | |
| 369 self._parseRequest() | |
| 370 if self.state == STATE_TARGET_AUTH: | |
| 371 ver, method = struct.unpack('!BB', buf) | |
| 372 self.buf = self.buf[2:] | |
| 373 if ver!=SOCKS5_VER or method!=AUTHMECH_ANON: | |
| 374 self.transport.loseConnection() | |
| 375 else: | |
| 376 self._makeRequest() | |
| 377 if self.state == STATE_TARGET_REQUEST: | |
| 378 self._parseRequestReply() | |
| 379 | |
| 380 | |
| 381 def clientConnectionLost(self, reason): | |
| 382 debug("clientConnectionLost") | |
| 383 self.transport.loseConnection() | |
| 384 | |
| 385 def connectionLost(self, reason): | |
| 386 debug("connectionLost") | |
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387 if self.state != STATE_CONNECT_PENDING: |
| 0 | 388 self.transport.unregisterProducer() |
| 389 if self.peersock != None: | |
| 390 self.peersock.peersock = None | |
| 391 self.peersock.transport.unregisterProducer() | |
| 392 self.peersock = None | |
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393 |
| 0 | 394 |
| 395 class Socks5ServerFactory(protocol.ServerFactory): | |
| 396 protocol = SOCKSv5 | |
| 397 | |
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398 def __init__(self, current_stream, hash_sid_map, finishedCb): |
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399 self.current_stream = current_stream |
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400 self.hash_sid_map = hash_sid_map |
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401 self.finishedCb = finishedCb |
| 0 | 402 |
| 403 def startedConnecting(self, connector): | |
| 69 | 404 debug (_("Socks 5 server connection started")) |
| 0 | 405 |
| 406 def clientConnectionLost(self, connector, reason): | |
| 69 | 407 debug (_("Socks 5 server connection lost (reason: %s)"), reason) |
| 0 | 408 |
| 409 class Socks5ClientFactory(protocol.ClientFactory): | |
| 410 protocol = SOCKSv5 | |
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411 |
| 398 | 412 def __init__(self, current_stream, sid, iq_id, activateCb, finishedCb, proxy=False): |
| 413 """Init the Client Factory | |
| 414 @param current_stream: current streams data | |
| 415 @param sid: Session ID | |
| 416 @param iq_id: iq id used to initiate the stream | |
| 417 @param activateCb: method to call to activate the stream | |
| 418 @param finishedCb: method to call when the stream session is finished | |
| 419 @param proxy: True if we are connecting throught a proxy (and we are a requester)""" | |
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420 self.data = current_stream[sid] |
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421 self.sid = sid |
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422 self.iq_id = iq_id |
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423 self.activateCb = activateCb |
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424 self.finishedCb = finishedCb |
| 398 | 425 self.proxy = proxy |
| 0 | 426 |
| 427 def startedConnecting(self, connector): | |
| 69 | 428 debug (_("Socks 5 client connection started")) |
| 0 | 429 |
| 430 def clientConnectionLost(self, connector, reason): | |
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431 debug (_("Socks 5 client connection lost")) |
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432 self.finishedCb(self.sid, reason.type == jab_error.ConnectionDone) #TODO: really check if the state is actually successful |
| 0 | 433 |
| 434 | |
| 64 | 435 class XEP_0065(): |
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436 |
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437 NAMESPACE = NS_BS |
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438 |
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439 params = """ |
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440 <params> |
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441 <general> |
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442 <category name="File Transfer"> |
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443 <param name="IP" value='0.0.0.0' default_cb='yes' type="string" /> |
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444 <param name="Port" value="28915" type="string" /> |
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445 </category> |
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446 </general> |
| 398 | 447 <individual> |
| 448 <category name="File Transfer"> | |
| 449 <param name="Proxy" value="" type="string" /> | |
| 450 <param name="Proxy host" value="" type="string" /> | |
| 451 <param name="Proxy port" value="" type="string" /> | |
| 452 </category> | |
| 453 </individual> | |
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454 </params> |
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455 """ |
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456 |
| 0 | 457 def __init__(self, host): |
| 69 | 458 info(_("Plugin XEP_0065 initialization")) |
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459 |
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460 #session data |
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461 self.current_stream = {} #key: stream_id, value: data(dict) |
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462 self.hash_sid_map = {} #key: hash of the transfer session, value: session id |
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463 |
| 0 | 464 self.host = host |
| 69 | 465 debug(_("registering")) |
|
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466 self.server_factory = Socks5ServerFactory(self.current_stream, self.hash_sid_map, self._killId) |
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467 |
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468 #parameters |
| 38 | 469 host.memory.importParams(XEP_0065.params) |
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470 host.memory.setDefault("IP", "File Transfer", self.getExternalIP) |
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471 port = int(self.host.memory.getParamA("Port", "File Transfer")) |
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472 |
| 69 | 473 info(_("Launching Socks5 Stream server on port %d"), port) |
| 0 | 474 reactor.listenTCP(port, self.server_factory) |
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475 |
| 72 | 476 def getHandler(self, profile): |
| 64 | 477 return XEP_0065_handler(self) |
| 478 | |
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479 def getExternalIP(self): |
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480 """Return IP visible from outside, by asking to a website""" |
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481 return getPage("http://www.goffi.org/sat_tools/get_ip.php") |
| 0 | 482 |
|
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483 def getProgress(self, sid, data): |
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484 """Fill data with position of current transfer""" |
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485 try: |
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486 file_obj = self.current_stream[sid]["file_obj"] |
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487 data["position"] = str(file_obj.tell()) |
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488 data["size"] = str(self.current_stream[sid]["size"]) |
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489 except: |
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490 pass |
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491 |
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492 def _timeOut(self, sid): |
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493 """Delecte current_stream id, called after timeout |
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494 @param id: id of self.current_stream""" |
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495 info(_("Socks5 Bytestream: TimeOut reached for id %s") % sid); |
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496 self._killId(sid, False, "TIMEOUT") |
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497 |
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498 def _killId(self, sid, success=False, failure_reason="UNKNOWN"): |
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499 """Delete an current_stream id, clean up associated observers |
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500 @param sid: id of self.current_stream""" |
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501 if not self.current_stream.has_key(sid): |
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502 warning(_("kill id called on a non existant id")) |
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503 return |
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504 if self.current_stream[sid].has_key("observer_cb"): |
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505 xmlstream = self.current_stream[sid]["xmlstream"] |
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506 xmlstream.removeObserver(self.current_stream[sid]["event_data"], self.current_stream[sid]["observer_cb"]) |
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507 if self.current_stream[sid]['timer'].active(): |
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508 self.current_stream[sid]['timer'].cancel() |
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509 if self.current_stream[sid].has_key("size"): |
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510 self.host.removeProgressCB(sid) |
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511 |
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512 file_obj = self.current_stream[sid]['file_obj'] |
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513 success_cb = self.current_stream[sid]['success_cb'] |
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514 failure_cb = self.current_stream[sid]['failure_cb'] |
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515 |
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516 del self.current_stream[sid] |
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517 if self.hash_sid_map.has_key(sid): |
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518 del self.hash_sid_map[sid] |
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519 |
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520 if success: |
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521 success_cb(sid, file_obj, NS_BS) |
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522 else: |
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523 failure_cb(sid, file_obj, NS_BS, failure_reason) |
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524 |
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525 def startStream(self, file_obj, to_jid, sid, length, successCb, failureCb, size = None, profile='@NONE@'): |
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526 """Launch the stream workflow |
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527 @param file_obj: file_obj to send |
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528 @param to_jid: JID of the recipient |
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529 @param sid: Stream session id |
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530 @param length: number of byte to send, or None to send until the end |
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531 @param successCb: method to call when stream successfuly finished |
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532 @param failureCb: method to call when something goes wrong |
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533 @param profile: %(doc_profile)s""" |
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534 if length != None: |
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535 error(_('stream length not managed yet')) |
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536 return; |
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537 profile_jid, xmlstream = self.host.getJidNStream(profile) |
| 398 | 538 if not profile_jid or not xmlstream: |
| 539 error(_("Unknown profile, this should not happen")) | |
| 540 return; | |
|
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541 data = self.current_stream[sid] = {} |
| 398 | 542 data["profile"] = profile |
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543 data["timer"] = reactor.callLater(TIMEOUT, self._timeOut, sid) |
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544 data["file_obj"] = file_obj |
| 398 | 545 data["from"] = profile_jid |
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546 data["to"] = to_jid |
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547 data["success_cb"] = successCb |
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548 data["failure_cb"] = failureCb |
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549 data["xmlstream"] = xmlstream |
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550 data["hash"] = calculateHash(profile_jid, to_jid, sid) |
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551 self.hash_sid_map[data["hash"]] = sid |
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552 if size: |
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553 data["size"] = size |
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554 self.host.registerProgressCB(sid, self.getProgress) |
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555 iq_elt = client.IQ(xmlstream,'set') |
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556 iq_elt["from"] = profile_jid.full() |
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557 iq_elt["to"] = to_jid.full() |
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558 query_elt = iq_elt.addElement('query', NS_BS) |
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559 query_elt['mode'] = 'tcp' |
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560 query_elt['sid'] = sid |
| 398 | 561 #first streamhost: direct connection |
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562 streamhost = query_elt.addElement('streamhost') |
| 398 | 563 streamhost['host'] = self.host.memory.getParamA("IP", "File Transfer") |
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564 streamhost['port'] = self.host.memory.getParamA("Port", "File Transfer") |
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565 streamhost['jid'] = profile_jid.full() |
| 398 | 566 |
| 567 #second streamhost: mediated connection, using proxy | |
| 568 streamhost = query_elt.addElement('streamhost') | |
| 569 streamhost['host'] = self.host.memory.getParamA("Proxy host", "File Transfer", profile_key=profile) | |
| 570 streamhost['port'] = self.host.memory.getParamA("Proxy port", "File Transfer", profile_key=profile) | |
| 571 streamhost['jid'] = self.host.memory.getParamA("Proxy", "File Transfer", profile_key=profile) | |
| 572 | |
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573 iq_elt.addCallback(self.iqResult, sid) |
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574 iq_elt.send() |
| 0 | 575 |
|
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576 def iqResult(self, sid, iq_elt): |
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577 """Called when the result of open iq is received""" |
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578 if iq_elt["type"] == "error": |
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579 warning(_("Transfer failed")) |
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580 return |
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581 |
| 398 | 582 try: |
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583 data = self.current_stream[sid] |
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584 file_obj = data["file_obj"] |
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585 timer = data["timer"] |
| 398 | 586 profile = data["profile"] |
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587 except KeyError: |
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588 error(_("Internal error, can't do transfer")) |
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589 return |
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590 |
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591 if timer.active(): |
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592 timer.cancel() |
| 398 | 593 |
| 594 profile_jid, xmlstream = self.host.getJidNStream(profile) | |
| 595 query_elt = iq_elt.firstChildElement() | |
| 596 streamhost_elts = filter(lambda elt: elt.name == 'streamhost-used', query_elt.elements()) | |
| 597 if not streamhost_elts: | |
| 598 warning(_("No streamhost found in stream query")) | |
| 599 return | |
|
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600 |
| 398 | 601 streamhost_jid = streamhost_elts[0]['jid'] |
| 602 if streamhost_jid != profile_jid.full(): | |
| 603 debug(_("A proxy server is used")) | |
| 604 proxy_host = self.host.memory.getParamA("Proxy host", "File Transfer", profile_key=profile) | |
| 605 proxy_port = self.host.memory.getParamA("Proxy port", "File Transfer", profile_key=profile) | |
| 606 proxy_jid = self.host.memory.getParamA("Proxy", "File Transfer", profile_key=profile) | |
| 607 if proxy_jid != streamhost_jid: | |
| 608 warning(_("Proxy jid is not the same as in parameters, this should not happen")) | |
| 609 return | |
| 610 factory = Socks5ClientFactory(self.current_stream, sid, None, self.activateProxyStream, self._killId, True) | |
| 611 reactor.connectTCP(proxy_host, int(proxy_port), factory) | |
| 612 else: | |
| 613 data["start_transfer_cb"](file_obj) #We now activate the stream | |
|
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614 |
| 398 | 615 def activateProxyStream(self, sid, iq_id, start_transfer_cb): |
| 616 debug(_("activating stream")) | |
| 617 data = self.current_stream[sid] | |
| 618 profile = data['profile'] | |
| 619 profile_jid, xmlstream = self.host.getJidNStream(profile) | |
| 620 | |
| 621 iq_elt = client.IQ(xmlstream,'set') | |
| 622 iq_elt["from"] = profile_jid.full() | |
| 623 iq_elt["to"] = self.host.memory.getParamA("Proxy", "File Transfer", profile_key=profile) | |
| 624 query_elt = iq_elt.addElement('query', NS_BS) | |
| 625 query_elt['sid'] = sid | |
| 626 query_elt.addElement('activate', content=data['to'].full()) | |
| 627 iq_elt.addCallback(self.proxyResult, sid, start_transfer_cb, data['file_obj']) | |
| 628 iq_elt.send() | |
| 629 | |
| 630 def proxyResult(self, sid, start_transfer_cb, file_obj, iq_elt): | |
| 631 if iq_elt['type'] == 'error': | |
| 632 warning(_("Can't activate the proxy stream")) | |
| 633 return | |
| 634 else: | |
| 635 start_transfer_cb(file_obj) | |
|
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636 |
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637 def prepareToReceive(self, from_jid, sid, file_obj, size, success_cb, failure_cb): |
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638 """Called when a bytestream is imminent |
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639 @param from_jid: jid of the sender |
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640 @param sid: Stream id |
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641 @param file_obj: File object where data will be written |
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642 @param size: full size of the data, or None if unknown |
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643 @param success_cb: method to call when successfuly finished |
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644 @param failure_cb: method to call when something goes wrong""" |
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645 data = self.current_stream[sid] = {} |
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646 data["from"] = from_jid |
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647 data["file_obj"] = file_obj |
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648 data["seq"] = -1 |
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649 if size: |
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650 data["size"] = size |
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651 self.host.registerProgressCB(sid, self.getProgress) |
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652 data["timer"] = reactor.callLater(TIMEOUT, self._timeOut, sid) |
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653 data["success_cb"] = success_cb |
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654 data["failure_cb"] = failure_cb |
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655 |
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656 |
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657 def streamQuery(self, iq_elt, profile): |
| 0 | 658 """Get file using byte stream""" |
|
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659 debug(_("BS stream query")) |
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660 profile_jid, xmlstream = self.host.getJidNStream(profile) |
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661 iq_elt.handled = True |
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662 query_elt = iq_elt.firstChildElement() |
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663 sid = query_elt.getAttribute("sid") |
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664 streamhost_elts = filter(lambda elt: elt.name == 'streamhost', query_elt.elements()) |
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665 |
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666 if not sid in self.current_stream: |
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667 warning(_("Ignoring unexpected BS transfer: %s" % sid)) |
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668 self.sendNotAcceptableError(iq_elt['id'], iq_elt['from'], xmlstream) |
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669 return |
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670 |
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671 self.current_stream[sid]["to"] = jid.JID(iq_elt["to"]) |
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672 self.current_stream[sid]["xmlstream"] = xmlstream |
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673 |
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674 if not streamhost_elts: |
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675 warning(_("No streamhost found in stream query %s" % sid)) |
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676 self.sendBadRequestError(iq_elt['id'], iq_elt['from'], xmlstream) |
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677 return |
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678 |
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679 streamhost_elt = streamhost_elts[0] #TODO: manage several streamhost elements case |
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680 sh_host = streamhost_elt.getAttribute("host") |
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681 sh_port = streamhost_elt.getAttribute("port") |
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682 sh_jid = streamhost_elt.getAttribute("jid") |
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683 if not sh_host or not sh_port or not sh_jid: |
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684 warning(_("incomplete streamhost element")) |
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685 self.sendBadRequestError(iq_elt['id'], iq_elt['from'], xmlstream) |
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686 return |
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687 |
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688 self.current_stream[sid]["streamhost"] = (sh_host, sh_port, sh_jid) |
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689 |
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690 info (_("Stream proposed: host=[%(host)s] port=[%(port)s]") % {'host':sh_host, 'port':sh_port}) |
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691 factory = Socks5ClientFactory(self.current_stream, sid, iq_elt["id"], self.activateStream, self._killId) |
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692 reactor.connectTCP(sh_host, int(sh_port), factory) |
| 0 | 693 |
|
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694 def activateStream(self, sid, iq_id): |
| 69 | 695 debug(_("activating stream")) |
| 0 | 696 result = domish.Element(('', 'iq')) |
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697 data = self.current_stream[sid] |
| 0 | 698 result['type'] = 'result' |
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699 result['id'] = iq_id |
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700 result['from'] = data["to"].full() |
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701 result['to'] = data["from"].full() |
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702 query = result.addElement('query', NS_BS) |
| 0 | 703 query['sid'] = sid |
| 704 streamhost = query.addElement('streamhost-used') | |
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705 streamhost['jid'] = data["streamhost"][2] |
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706 data["xmlstream"].send(result) |
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707 |
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708 def sendNotAcceptableError(self, iq_id, to_jid, xmlstream): |
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709 """Not acceptable error used when the stream is not expected or something is going wrong |
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710 @param iq_id: IQ id |
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711 @param to_jid: addressee |
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712 @param xmlstream: XML stream to use to send the error""" |
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713 result = domish.Element(('', 'iq')) |
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714 result['type'] = 'result' |
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715 result['id'] = iq_id |
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716 result['to'] = to_jid |
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717 error_el = result.addElement('error') |
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718 error_el['type'] = 'modify' |
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719 error_el.addElement(('urn:ietf:params:xml:ns:xmpp-stanzas','not-acceptable')) |
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720 xmlstream.send(result) |
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721 |
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722 def sendBadRequestError(self, iq_id, to_jid, xmlstream): |
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723 """Not acceptable error used when the stream is not expected or something is going wrong |
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724 @param iq_id: IQ id |
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725 @param to_jid: addressee |
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726 @param xmlstream: XML stream to use to send the error""" |
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727 result = domish.Element(('', 'iq')) |
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728 result['type'] = 'result' |
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729 result['id'] = iq_id |
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730 result['to'] = to_jid |
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731 error_el = result.addElement('error') |
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732 error_el['type'] = 'cancel' |
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733 error_el.addElement(('urn:ietf:params:xml:ns:xmpp-stanzas','bad-request')) |
| 64 | 734 xmlstream.send(result) |
| 0 | 735 |
| 64 | 736 class XEP_0065_handler(XMPPHandler): |
| 737 implements(iwokkel.IDisco) | |
| 738 | |
| 739 def __init__(self, plugin_parent): | |
| 740 self.plugin_parent = plugin_parent | |
| 741 self.host = plugin_parent.host | |
| 398 | 742 |
| 743 def _proxyDataResult(self, iq_elt): | |
| 744 """Called with the informations about proxy according to XEP-0065 #4 | |
| 745 Params should be filled with these infos""" | |
| 746 if iq_elt["type"] == "error": | |
| 747 warning(_("Can't determine proxy informations")) | |
| 748 return | |
| 749 query_elt = iq_elt.firstChildElement() | |
| 750 if query_elt.name != "query": | |
| 751 warning(_("Bad answer received from proxy")) | |
| 752 return | |
| 753 streamhost_elts = filter(lambda elt: elt.name == 'streamhost', query_elt.elements()) | |
| 754 if not streamhost_elts: | |
| 755 warning(_("No streamhost found in stream query")) | |
| 756 return | |
| 757 if len(streamhost_elts) != 1: | |
| 758 warning(_("Multiple streamhost elements in proxy not managed, keeping only the first one")) | |
| 759 streamhost_elt = streamhost_elts[0] | |
| 760 proxy = self.host.memory.setParam("Proxy", streamhost_elt.getAttribute("jid",""), "File Transfer", self.parent.profile) | |
| 761 proxy = self.host.memory.setParam("Proxy host", streamhost_elt.getAttribute("host",""), "File Transfer", self.parent.profile) | |
| 762 proxy = self.host.memory.setParam("Proxy port", streamhost_elt.getAttribute("port",""), "File Transfer", self.parent.profile) | |
| 763 | |
| 64 | 764 |
| 765 def connectionInitialized(self): | |
| 398 | 766 def after_init(ignore): |
| 767 proxy_ent = self.host.memory.getServerServiceEntity("proxy", "bytestreams", self.parent.profile) | |
| 768 if not proxy_ent: | |
| 769 debug(_("No proxy found on this server")) | |
| 770 return | |
| 771 iq_elt = client.IQ(self.parent.xmlstream,'get') | |
| 772 iq_elt["to"] = proxy_ent.full() | |
| 773 query_elt = iq_elt.addElement('query', NS_BS) | |
| 774 iq_elt.addCallback(self._proxyDataResult) | |
| 775 iq_elt.send() | |
| 776 | |
| 777 | |
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778 self.xmlstream.addObserver(BS_REQUEST, self.plugin_parent.streamQuery, profile = self.parent.profile) |
| 398 | 779 proxy = self.host.memory.getParamA("Proxy", "File Transfer", profile_key = self.parent.profile) |
| 780 if not proxy: | |
| 781 self.parent.client_initialized.addCallback(after_init) | |
| 782 | |
| 64 | 783 |
| 784 | |
| 785 def getDiscoInfo(self, requestor, target, nodeIdentifier=''): | |
| 786 return [disco.DiscoFeature(NS_BS)] | |
| 787 | |
| 788 def getDiscoItems(self, requestor, target, nodeIdentifier=''): | |
| 789 return [] |