Mercurial > libervia-backend
annotate src/plugins/plugin_xep_0096.py @ 645:17bd09cd1001
core: misc bug fixes
author | Goffi <goffi@goffi.org> |
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date | Sat, 21 Sep 2013 15:34:10 +0200 |
parents | 6821fc06a324 |
children | 0077912bc9ba |
rev | line source |
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0 | 1 #!/usr/bin/python |
2 # -*- coding: utf-8 -*- | |
3 | |
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4 # SAT plugin for managing xep-0096 |
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5 # Copyright (C) 2009, 2010, 2011, 2012, 2013 Jérôme Poisson (goffi@goffi.org) |
0 | 6 |
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7 # This program is free software: you can redistribute it and/or modify |
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8 # it under the terms of the GNU Affero General Public License as published by |
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9 # the Free Software Foundation, either version 3 of the License, or |
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10 # (at your option) any later version. |
0 | 11 |
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12 # This program is distributed in the hope that it will be useful, |
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 # GNU Affero General Public License for more details. |
0 | 16 |
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17 # You should have received a copy of the GNU Affero General Public License |
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>. |
0 | 19 |
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20 from logging import debug, info, warning, error |
0 | 21 from twisted.words.xish import domish |
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22 from twisted.words.protocols.jabber import jid |
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23 from twisted.words.protocols.jabber import error as jab_error |
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24 import os |
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25 from twisted.internet import reactor |
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26 from sat.core.exceptions import ProfileNotInCacheError |
0 | 27 |
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28 from wokkel import data_form |
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29 |
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30 IQ_SET = '/iq[@type="set"]' |
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31 PROFILE_NAME = "file-transfer" |
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32 PROFILE = "http://jabber.org/protocol/si/profile/" + PROFILE_NAME |
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33 |
0 | 34 PLUGIN_INFO = { |
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35 "name": "XEP 0096 Plugin", |
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36 "import_name": "XEP-0096", |
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37 "type": "XEP", |
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38 "protocols": ["XEP-0096"], |
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39 "dependencies": ["XEP-0020", "XEP-0095", "XEP-0065", "XEP-0047"], |
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40 "main": "XEP_0096", |
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41 "handler": "no", |
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42 "description": _("""Implementation of SI File Transfer""") |
0 | 43 } |
44 | |
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45 |
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46 class XEP_0096(object): |
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47 |
0 | 48 def __init__(self, host): |
69 | 49 info(_("Plugin XEP_0096 initialization")) |
0 | 50 self.host = host |
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51 self.managed_stream_m = [self.host.plugins["XEP-0065"].NAMESPACE, |
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52 self.host.plugins["XEP-0047"].NAMESPACE] # Stream methods managed |
391 | 53 self.host.plugins["XEP-0095"].registerSIProfile(PROFILE_NAME, self.transferRequest) |
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54 host.bridge.addMethod("sendFile", ".plugin", in_sign='ssa{ss}s', out_sign='s', method=self.sendFile) |
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55 |
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56 def profileConnected(self, profile): |
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57 client = self.host.getClient(profile) |
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58 client._xep_0096_waiting_for_approval = {} # key = id, value = [transfer data, IdelayedCall Reactor timeout, |
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59 # current stream method, [failed stream methods], profile] |
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60 |
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61 def _kill_id(self, approval_id, profile): |
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62 """Delete a waiting_for_approval id, called after timeout |
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63 @param approval_id: id of _xep_0096_waiting_for_approval""" |
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64 info(_("SI File Transfer: TimeOut reached for id %s") % approval_id) |
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65 try: |
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66 client = self.host.getClient(profile) |
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67 del client._xep_0096_waiting_for_approval[approval_id] |
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68 except KeyError: |
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69 warning(_("kill id called on a non existant approval id")) |
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70 |
398 | 71 def transferRequest(self, iq_id, from_jid, si_id, si_mime_type, si_el, profile): |
391 | 72 """Called when a file transfer is requested |
398 | 73 @param iq_id: id of the iq request |
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74 @param from_jid: jid of the sender |
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75 @param si_id: Stream Initiation session id |
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76 @param si_mime_type: Mime type of the file (or default "application/octet-stream" if unknown) |
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77 @param si_el: domish.Element of the request |
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78 @param profile: %(doc_profile)s""" |
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79 info(_("XEP-0096 file transfer requested")) |
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80 debug(si_el.toXml()) |
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81 client = self.host.getClient(profile) |
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82 if not client: |
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83 raise ProfileNotInCacheError |
0 | 84 filename = "" |
85 file_size = "" | |
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86 file_date = None |
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87 file_hash = None |
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88 file_desc = "" |
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89 can_range = False |
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90 file_elts = filter(lambda elt: elt.name == 'file', si_el.elements()) |
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91 feature_elts = self.host.plugins["XEP-0020"].getFeatureElt(si_el) |
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92 |
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93 if file_elts: |
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94 file_el = file_elts[0] |
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95 filename = file_el["name"] |
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96 file_size = file_el["size"] |
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97 file_date = file_el.getAttribute("date", "") |
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98 file_hash = file_el.getAttribute("hash", "") |
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99 info(_("File proposed: name=[%(name)s] size=%(size)s") % {'name': filename, 'size': file_size}) |
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100 for file_child_el in file_el.elements(): |
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101 if file_child_el.name == "desc": |
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102 file_desc = unicode(file_child_el) |
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103 elif file_child_el.name == "range": |
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104 can_range = True |
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105 else: |
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106 warning(_("No file element found")) |
398 | 107 self.host.plugins["XEP-0095"].sendBadRequestError(iq_id, from_jid, profile) |
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108 return |
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109 |
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110 if feature_elts: |
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111 feature_el = feature_elts[0] |
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112 form = data_form.Form.fromElement(feature_el.firstChildElement()) |
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113 try: |
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114 stream_method = self.host.plugins["XEP-0020"].negociate(feature_el, 'stream-method', self.managed_stream_m) |
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115 except KeyError: |
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116 warning(_("No stream method found")) |
398 | 117 self.host.plugins["XEP-0095"].sendBadRequestError(iq_id, from_jid, profile) |
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118 return |
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119 if not stream_method: |
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120 warning(_("Can't find a valid stream method")) |
398 | 121 self.host.plugins["XEP-0095"].sendFailedError(iq_id, from_jid, profile) |
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122 return |
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123 else: |
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124 warning(_("No feature element found")) |
398 | 125 self.host.plugins["XEP-0095"].sendBadRequestError(iq_id, from_jid, profile) |
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126 return |
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127 |
391 | 128 #if we are here, the transfer can start, we just need user's agreement |
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129 data = {"filename": filename, "id": iq_id, "from": from_jid, "size": file_size, "date": file_date, "hash": file_hash, "desc": file_desc, "can_range": str(can_range)} |
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130 client._xep_0096_waiting_for_approval[si_id] = [data, reactor.callLater(300, self._kill_id, si_id, profile), stream_method, []] |
0 | 131 |
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132 self.host.askConfirmation(si_id, "FILE_TRANSFER", data, self.confirmationCB, profile) |
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133 |
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134 def _getFileObject(self, dest_path, can_range=False): |
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135 """Open file, put file pointer to the end if the file if needed |
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136 @param dest_path: path of the destination file |
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137 @param can_range: True if the file pointer can be moved |
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138 @return: File Object""" |
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139 return open(dest_path, "ab" if can_range else "wb") |
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140 |
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141 def confirmationCB(self, sid, accepted, frontend_data, profile): |
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142 """Called on confirmation answer |
398 | 143 @param sid: file transfer session id |
391 | 144 @param accepted: True if file transfer is accepted |
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145 @param frontend_data: data sent by frontend""" |
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146 client = self.host.getClient(profile) |
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147 if not client: |
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148 raise ProfileNotInCacheError |
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149 data, timeout, stream_method, failed_methods = client._xep_0096_waiting_for_approval[sid] |
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150 can_range = data['can_range'] == "True" |
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151 range_offset = 0 |
0 | 152 if accepted: |
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153 if timeout.active(): |
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154 timeout.cancel() |
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155 try: |
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156 dest_path = frontend_data['dest_path'] |
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157 except KeyError: |
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158 error(_('dest path not found in frontend_data')) |
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159 del(client._xep_0096_waiting_for_approval[sid]) |
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160 return |
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161 if stream_method == self.host.plugins["XEP-0065"].NAMESPACE: |
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162 file_obj = self._getFileObject(dest_path, can_range) |
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163 range_offset = file_obj.tell() |
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164 self.host.plugins["XEP-0065"].prepareToReceive(jid.JID(data['from']), sid, file_obj, int(data["size"]), self._transferSucceeded, self._transferFailed, profile) |
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165 elif stream_method == self.host.plugins["XEP-0047"].NAMESPACE: |
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166 file_obj = self._getFileObject(dest_path, can_range) |
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167 range_offset = file_obj.tell() |
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168 self.host.plugins["XEP-0047"].prepareToReceive(jid.JID(data['from']), sid, file_obj, int(data["size"]), self._transferSucceeded, self._transferFailed, profile) |
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169 else: |
391 | 170 error(_("Unknown stream method, this should not happen at this stage, cancelling transfer")) |
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171 del(client._xep_0096_waiting_for_approval[sid]) |
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172 return |
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173 |
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174 #we can send the iq result |
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175 feature_elt = self.host.plugins["XEP-0020"].chooseOption({'stream-method': stream_method}) |
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176 misc_elts = [] |
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177 misc_elts.append(domish.Element((PROFILE, "file"))) |
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178 if can_range: |
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179 range_elt = domish.Element((None, "range")) |
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180 range_elt['offset'] = str(range_offset) |
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181 #TODO: manage range length |
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182 misc_elts.append(range_elt) |
398 | 183 self.host.plugins["XEP-0095"].acceptStream(data["id"], data['from'], feature_elt, misc_elts, profile) |
0 | 184 else: |
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185 debug(_("Transfer [%s] refused"), sid) |
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186 self.host.plugins["XEP-0095"].sendRejectedError(data["id"], data['from'], profile=profile) |
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187 del(client._xep_0096_waiting_for_approval[sid]) |
0 | 188 |
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189 def _transferSucceeded(self, sid, file_obj, stream_method, profile): |
391 | 190 """Called by the stream method when transfer successfuly finished |
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191 @param id: stream id""" |
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192 client = self.host.getClient(profile) |
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193 if not client: |
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194 raise ProfileNotInCacheError |
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195 file_obj.close() |
391 | 196 info(_('Transfer %s successfuly finished') % sid) |
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197 del(client._xep_0096_waiting_for_approval[sid]) |
0 | 198 |
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199 def _transferFailed(self, sid, file_obj, stream_method, reason, profile): |
391 | 200 """Called when something went wrong with the transfer |
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201 @param id: stream id |
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202 @param reason: can be TIMEOUT, IO_ERROR, PROTOCOL_ERROR""" |
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203 client = self.host.getClient(profile) |
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204 if not client: |
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205 raise ProfileNotInCacheError |
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206 data, timeout, stream_method, failed_methods = client._xep_0096_waiting_for_approval[sid] |
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207 warning(_('Transfer %(id)s failed with stream method %(s_method)s: %(reason)s') % { |
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208 'id': sid, |
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209 's_method': stream_method, |
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210 'reason': reason}) |
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211 filepath = file_obj.name |
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212 file_obj.close() |
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213 os.remove(filepath) |
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214 #TODO: session remenber (within a time limit) when a stream method fail, and avoid that stream method with full jid for the rest of the session |
391 | 215 warning(_("All stream methods failed, can't transfer the file")) |
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216 del(client._xep_0096_waiting_for_approval[sid]) |
0 | 217 |
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218 def fileCb(self, filepath, sid, size, profile, IQ): |
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219 if IQ['type'] == "error": |
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220 stanza_err = jab_error.exceptionFromStanza(IQ) |
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221 if stanza_err.code == '403' and stanza_err.condition == 'forbidden': |
391 | 222 debug(_("File transfer refused by %s") % IQ['from']) |
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223 self.host.bridge.newAlert(_("The contact %s refused your file") % IQ['from'], _("File refused"), "INFO", profile) |
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224 else: |
391 | 225 warning(_("Error during file transfer with %s") % IQ['from']) |
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226 self.host.bridge.newAlert(_("Something went wrong during the file transfer session intialisation with %s") % IQ['from'], _("File transfer error"), "ERROR", profile) |
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227 return |
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228 |
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229 si_elt = IQ.firstChildElement() |
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230 |
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231 if IQ['type'] != "result" or not si_elt or si_elt.name != "si": |
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232 error(_("Protocol error during file transfer")) |
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233 return |
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234 |
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235 feature_elts = self.host.plugins["XEP-0020"].getFeatureElt(si_elt) |
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236 if not feature_elts: |
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237 warning(_("No feature element")) |
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238 return |
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239 |
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240 choosed_options = self.host.plugins["XEP-0020"].getChoosedOptions(feature_elts[0]) |
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241 try: |
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242 stream_method = choosed_options["stream-method"] |
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243 except KeyError: |
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244 warning(_("No stream method choosed")) |
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245 return |
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246 |
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247 range_offset = 0 |
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248 range_length = None |
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249 range_elts = filter(lambda elt: elt.name == 'range', si_elt.elements()) |
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250 if range_elts: |
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251 range_elt = range_elts[0] |
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252 range_offset = range_elt.getAttribute("offset", 0) |
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253 range_length = range_elt.getAttribute("length") |
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254 |
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255 if stream_method == self.host.plugins["XEP-0065"].NAMESPACE: |
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256 file_obj = open(filepath, 'r') |
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257 if range_offset: |
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258 file_obj.seek(range_offset) |
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259 self.host.plugins["XEP-0065"].startStream(file_obj, jid.JID(IQ['from']), sid, range_length, self.sendSuccessCb, self.sendFailureCb, size, profile) |
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260 elif stream_method == self.host.plugins["XEP-0047"].NAMESPACE: |
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261 file_obj = open(filepath, 'r') |
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262 if range_offset: |
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263 file_obj.seek(range_offset) |
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264 self.host.plugins["XEP-0047"].startStream(file_obj, jid.JID(IQ['from']), sid, range_length, self.sendSuccessCb, self.sendFailureCb, size, profile) |
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265 else: |
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266 warning(_("Invalid stream method received")) |
0 | 267 |
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268 def sendFile(self, to_jid, filepath, data={}, profile_key='@NONE@'): |
0 | 269 """send a file using XEP-0096 |
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270 @to_jid: recipient |
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271 @filepath: absolute path to the file to send |
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272 @data: dictionnary with the optional following keys: |
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273 - "description": description of the file |
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274 @param profile_key: %(doc_profile_key)s |
391 | 275 @return: an unique id to identify the transfer |
0 | 276 """ |
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277 profile = self.host.memory.getProfileName(profile_key) |
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278 if not profile: |
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279 warning(_("Trying to send a file from an unknown profile")) |
64 | 280 return "" |
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281 feature_elt = self.host.plugins["XEP-0020"].proposeFeatures({'stream-method': self.managed_stream_m}) |
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282 |
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283 file_transfer_elts = [] |
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284 |
0 | 285 statinfo = os.stat(filepath) |
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286 file_elt = domish.Element((PROFILE, 'file')) |
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287 file_elt['name'] = os.path.basename(filepath) |
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288 size = file_elt['size'] = str(statinfo.st_size) |
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289 file_transfer_elts.append(file_elt) |
0 | 290 |
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291 file_transfer_elts.append(domish.Element((None, 'range'))) |
0 | 292 |
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293 sid, offer = self.host.plugins["XEP-0095"].proposeStream(jid.JID(to_jid), PROFILE, feature_elt, file_transfer_elts, profile_key=profile) |
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294 offer.addCallback(self.fileCb, filepath, sid, size, profile) |
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295 return sid |
0 | 296 |
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297 def sendSuccessCb(self, sid, file_obj, stream_method, profile): |
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298 info(_('Transfer %(sid)s successfuly finished [%(profile)s]') |
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299 % {"sid": sid, "profile": profile}) |
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300 file_obj.close() |
64 | 301 |
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302 def sendFailureCb(self, sid, file_obj, stream_method, reason, profile): |
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303 file_obj.close() |
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304 warning(_('Transfer %(id)s failed with stream method %(s_method)s: %(reason)s [%(profile)s') % {'id': sid, "s_method": stream_method, 'reason': reason, 'profile': profile}) |