Mercurial > libervia-backend
annotate libervia/backend/plugins/plugin_xep_0096.py @ 4242:8acf46ed7f36
frontends: remote control implementation:
This is the frontends common part of remote control implementation. It handle the creation
of WebRTC session, and management of inputs. For now the reception use freedesktop.org
Desktop portal, and works mostly with Wayland based Desktop Environments.
rel 436
author | Goffi <goffi@goffi.org> |
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date | Sat, 11 May 2024 13:52:43 +0200 |
parents | e11b13418ba6 |
children | 0d7bb4df2343 |
rev | line source |
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3028 | 1 #!/usr/bin/env python3 |
3137 | 2 |
0 | 3 |
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4 # SAT plugin for managing xep-0096 |
3479 | 5 # Copyright (C) 2009-2021 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 import os |
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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 |
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24 from twisted.internet import defer |
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25 from libervia.backend.core.i18n import _, D_ |
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26 from libervia.backend.core.constants import Const as C |
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27 from libervia.backend.core.log import getLogger |
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28 from libervia.backend.core import exceptions |
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29 from libervia.backend.core.xmpp import SatXMPPEntity |
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30 from libervia.backend.tools import xml_tools |
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31 from libervia.backend.tools import stream |
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32 |
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33 log = getLogger(__name__) |
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34 |
0 | 35 |
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36 NS_SI_FT = "http://jabber.org/protocol/si/profile/file-transfer" |
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37 IQ_SET = '/iq[@type="set"]' |
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38 SI_PROFILE_NAME = "file-transfer" |
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39 SI_PROFILE = "http://jabber.org/protocol/si/profile/" + SI_PROFILE_NAME |
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40 |
0 | 41 PLUGIN_INFO = { |
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42 C.PI_NAME: "XEP-0096 Plugin", |
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43 C.PI_IMPORT_NAME: "XEP-0096", |
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44 C.PI_TYPE: "XEP", |
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45 C.PI_PROTOCOLS: ["XEP-0096"], |
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46 C.PI_DEPENDENCIES: ["XEP-0020", "XEP-0095", "XEP-0065", "XEP-0047", "FILE"], |
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47 C.PI_MAIN: "XEP_0096", |
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48 C.PI_HANDLER: "no", |
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49 C.PI_DESCRIPTION: _("""Implementation of SI File Transfer"""), |
0 | 50 } |
51 | |
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52 |
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53 class XEP_0096(object): |
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54 # TODO: call self._f.unregister when unloading order will be managing (i.e. when depenencies will be unloaded at the end) |
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55 name = PLUGIN_INFO[C.PI_NAME] |
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56 human_name = D_("Stream Initiation") |
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57 |
0 | 58 def __init__(self, host): |
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59 log.info(_("Plugin XEP_0096 initialization")) |
0 | 60 self.host = host |
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61 self.managed_stream_m = [ |
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62 self.host.plugins["XEP-0065"].NAMESPACE, |
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63 self.host.plugins["XEP-0047"].NAMESPACE, |
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64 ] # Stream methods managed |
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65 self._f = self.host.plugins["FILE"] |
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66 self._f.register(self) |
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67 self._si = self.host.plugins["XEP-0095"] |
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68 self._si.register_si_profile(SI_PROFILE_NAME, self._transfer_request) |
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69 host.bridge.add_method( |
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70 "si_file_send", ".plugin", in_sign="sssss", out_sign="s", method=self._file_send |
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71 ) |
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72 |
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73 async def can_handle_file_send(self, client, peer_jid, filepath): |
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74 return await self.host.hasFeature(client, NS_SI_FT, peer_jid) |
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75 |
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76 def unload(self): |
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77 self._si.unregister_si_profile(SI_PROFILE_NAME) |
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78 |
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79 def _bad_request(self, client, iq_elt, message=None): |
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80 """Send a bad-request error |
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81 |
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82 @param iq_elt(domish.Element): initial <IQ> element of the SI request |
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83 @param message(None, unicode): informational message to display in the logs |
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84 """ |
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85 if message is not None: |
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86 log.warning(message) |
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87 self._si.sendError(client, iq_elt, "bad-request") |
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88 |
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89 def _parse_range(self, parent_elt, file_size): |
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90 """find and parse <range/> element |
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91 |
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92 @param parent_elt(domish.Element): direct parent of the <range/> element |
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93 @return (tuple[bool, int, int]): a tuple with |
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94 - True if range is required |
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95 - range_offset |
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96 - range_length |
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97 """ |
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98 try: |
3028 | 99 range_elt = next(parent_elt.elements(NS_SI_FT, "range")) |
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100 except StopIteration: |
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101 range_ = False |
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102 range_offset = None |
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103 range_length = None |
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104 else: |
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105 range_ = True |
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106 |
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107 try: |
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108 range_offset = int(range_elt["offset"]) |
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109 except KeyError: |
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110 range_offset = 0 |
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111 |
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112 try: |
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113 range_length = int(range_elt["length"]) |
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114 except KeyError: |
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115 range_length = file_size |
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116 |
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117 if range_offset != 0 or range_length != file_size: |
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118 raise NotImplementedError # FIXME |
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119 |
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120 return range_, range_offset, range_length |
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121 |
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122 def _transfer_request(self, client, iq_elt, si_id, si_mime_type, si_elt): |
391 | 123 """Called when a file transfer is requested |
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124 |
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125 @param iq_elt(domish.Element): initial <IQ> element of the SI request |
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126 @param si_id(unicode): Stream Initiation session id |
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127 @param si_mime_type("unicode"): Mime type of the file (or default "application/octet-stream" if unknown) |
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128 @param si_elt(domish.Element): request |
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129 """ |
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130 log.info(_("XEP-0096 file transfer requested")) |
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131 peer_jid = jid.JID(iq_elt["from"]) |
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132 |
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133 try: |
3028 | 134 file_elt = next(si_elt.elements(NS_SI_FT, "file")) |
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135 except StopIteration: |
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136 return self._bad_request( |
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137 client, iq_elt, "No <file/> element found in SI File Transfer request" |
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138 ) |
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139 |
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140 try: |
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141 feature_elt = self.host.plugins["XEP-0020"].get_feature_elt(si_elt) |
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142 except exceptions.NotFound: |
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143 return self._bad_request( |
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144 client, iq_elt, "No <feature/> element found in SI File Transfer request" |
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145 ) |
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146 |
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147 try: |
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148 filename = file_elt["name"] |
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149 file_size = int(file_elt["size"]) |
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150 except (KeyError, ValueError): |
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151 return self._bad_request(client, iq_elt, "Malformed SI File Transfer request") |
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152 |
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153 file_date = file_elt.getAttribute("date") |
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154 file_hash = file_elt.getAttribute("hash") |
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155 |
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156 log.info( |
3028 | 157 "File proposed: name=[{name}] size={size}".format( |
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158 name=filename, size=file_size |
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159 ) |
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160 ) |
587
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161 |
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162 try: |
3028 | 163 file_desc = str(next(file_elt.elements(NS_SI_FT, "desc"))) |
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164 except StopIteration: |
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165 file_desc = "" |
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166 |
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167 try: |
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168 range_, range_offset, range_length = self._parse_range(file_elt, file_size) |
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169 except ValueError: |
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170 return self._bad_request(client, iq_elt, "Malformed SI File Transfer request") |
587
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171 |
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172 try: |
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173 stream_method = self.host.plugins["XEP-0020"].negotiate( |
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174 feature_elt, "stream-method", self.managed_stream_m, namespace=None |
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175 ) |
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176 except KeyError: |
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177 return self._bad_request(client, iq_elt, "No stream method found") |
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178 |
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179 if stream_method: |
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180 if stream_method == self.host.plugins["XEP-0065"].NAMESPACE: |
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181 plugin = self.host.plugins["XEP-0065"] |
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182 elif stream_method == self.host.plugins["XEP-0047"].NAMESPACE: |
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183 plugin = self.host.plugins["XEP-0047"] |
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184 else: |
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185 log.error( |
3028 | 186 "Unknown stream method, this should not happen at this stage, cancelling transfer" |
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187 ) |
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188 else: |
3028 | 189 log.warning("Can't find a valid stream method") |
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190 self._si.sendError(client, iq_elt, "not-acceptable") |
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191 return |
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192 |
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193 # if we are here, the transfer can start, we just need user's agreement |
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194 data = { |
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195 "name": filename, |
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196 "peer_jid": peer_jid, |
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197 "size": file_size, |
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198 "date": file_date, |
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199 "hash": file_hash, |
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200 "desc": file_desc, |
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201 "range": range_, |
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202 "range_offset": range_offset, |
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203 "range_length": range_length, |
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204 "si_id": si_id, |
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205 "progress_id": si_id, |
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206 "stream_method": stream_method, |
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207 "stream_plugin": plugin, |
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208 } |
0 | 209 |
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210 d = defer.ensureDeferred( |
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211 self._f.get_dest_dir(client, peer_jid, data, data, stream_object=True) |
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212 ) |
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213 d.addCallback(self.confirmation_cb, client, iq_elt, data) |
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214 |
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215 def confirmation_cb(self, accepted, client, iq_elt, data): |
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216 """Called on confirmation answer |
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217 |
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218 @param accepted(bool): True if file transfer is accepted |
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219 @param iq_elt(domish.Element): initial SI request |
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220 @param data(dict): session data |
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221 """ |
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222 if not accepted: |
3028 | 223 log.info("File transfer declined") |
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224 self._si.sendError(client, iq_elt, "forbidden") |
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225 return |
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226 # data, timeout, stream_method, failed_methods = client._xep_0096_waiting_for_approval[sid] |
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227 # can_range = data['can_range'] == "True" |
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228 # range_offset = 0 |
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229 # if timeout.active(): |
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230 # timeout.cancel() |
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231 # try: |
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232 # dest_path = frontend_data['dest_path'] |
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233 # except KeyError: |
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234 # log.error(_('dest path not found in frontend_data')) |
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235 # del client._xep_0096_waiting_for_approval[sid] |
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236 # return |
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237 # if stream_method == self.host.plugins["XEP-0065"].NAMESPACE: |
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238 # plugin = self.host.plugins["XEP-0065"] |
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239 # elif stream_method == self.host.plugins["XEP-0047"].NAMESPACE: |
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240 # plugin = self.host.plugins["XEP-0047"] |
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241 # else: |
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242 # log.error(_("Unknown stream method, this should not happen at this stage, cancelling transfer")) |
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243 # del client._xep_0096_waiting_for_approval[sid] |
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244 # return |
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245 |
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246 # file_obj = self._getFileObject(dest_path, can_range) |
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247 # range_offset = file_obj.tell() |
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248 d = data["stream_plugin"].create_session( |
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249 client, data["stream_object"], client.jid, data["peer_jid"], data["si_id"] |
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250 ) |
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251 d.addCallback(self._transfer_cb, client, data) |
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252 d.addErrback(self._transfer_eb, client, data) |
0 | 253 |
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254 # we can send the iq result |
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255 feature_elt = self.host.plugins["XEP-0020"].choose_option( |
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256 {"stream-method": data["stream_method"]}, namespace=None |
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257 ) |
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258 misc_elts = [] |
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259 misc_elts.append(domish.Element((SI_PROFILE, "file"))) |
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260 # if can_range: |
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261 # range_elt = domish.Element((None, "range")) |
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262 # range_elt['offset'] = str(range_offset) |
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263 # #TODO: manage range length |
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264 # misc_elts.append(range_elt) |
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265 self._si.accept_stream(client, iq_elt, feature_elt, misc_elts) |
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266 |
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267 def _transfer_cb(self, __, client, data): |
391 | 268 """Called by the stream method when transfer successfuly finished |
0 | 269 |
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270 @param data: session data |
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271 """ |
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272 # TODO: check hash |
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273 data["stream_object"].close() |
3028 | 274 log.info("Transfer {si_id} successfuly finished".format(**data)) |
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275 |
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276 def _transfer_eb(self, failure, client, data): |
391 | 277 """Called when something went wrong with the transfer |
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278 |
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279 @param id: stream id |
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280 @param data: session data |
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281 """ |
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282 log.warning( |
3028 | 283 "Transfer {si_id} failed: {reason}".format( |
284 reason=str(failure.value), **data | |
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285 ) |
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286 ) |
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287 data["stream_object"].close() |
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288 |
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289 def _file_send(self, peer_jid_s, filepath, name, desc, profile=C.PROF_KEY_NONE): |
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290 client = self.host.get_client(profile) |
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291 return self.file_send( |
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292 client, jid.JID(peer_jid_s), filepath, name or None, desc or None |
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293 ) |
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294 |
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295 def file_send( |
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296 self, |
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297 client: SatXMPPEntity, |
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298 peer_jid: jid.JID, |
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299 filepath: str, |
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300 name: str|None = None, |
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301 desc: str|None = None, |
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302 extra: dict|None = None |
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303 ) -> dict: |
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304 """Send a file using XEP-0096. |
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305 |
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306 @param peer_jid: recipient |
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307 @param filepath: absolute path to the file to send |
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308 @param name: name of the file to send |
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309 name must not contain "/" characters |
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310 @param desc: description of the file |
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311 @param extra: not used here |
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312 @return: a dict with the key "progress" containing an unique id to identify the |
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313 transfer |
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314 """ |
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315 feature_elt = self.host.plugins["XEP-0020"].propose_features( |
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316 {"stream-method": self.managed_stream_m}, namespace=None |
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317 ) |
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318 |
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319 file_transfer_elts = [] |
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320 |
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321 statinfo = os.stat(filepath) |
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322 file_elt = domish.Element((SI_PROFILE, "file")) |
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323 file_elt["name"] = name or os.path.basename(filepath) |
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324 assert "/" not in file_elt["name"] |
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325 size = statinfo.st_size |
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326 file_elt["size"] = str(size) |
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327 if desc: |
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328 file_elt.addElement("desc", content=desc) |
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329 file_transfer_elts.append(file_elt) |
0 | 330 |
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331 file_transfer_elts.append(domish.Element((None, "range"))) |
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332 |
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333 sid, offer_d = self._si.propose_stream( |
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334 client, peer_jid, SI_PROFILE, feature_elt, file_transfer_elts |
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335 ) |
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336 args = [filepath, sid, size, client] |
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337 offer_d.addCallbacks(self._file_cb, self._file_eb, args, None, args) |
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338 return {"progress": sid} |
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339 |
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340 def _file_cb(self, result_tuple, filepath, sid, size, client): |
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341 iq_elt, si_elt = result_tuple |
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342 |
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343 try: |
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344 feature_elt = self.host.plugins["XEP-0020"].get_feature_elt(si_elt) |
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345 except exceptions.NotFound: |
3028 | 346 log.warning("No <feature/> element found in result while expected") |
386
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347 return |
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348 |
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349 choosed_options = self.host.plugins["XEP-0020"].get_choosed_options( |
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350 feature_elt, namespace=None |
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351 ) |
386
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352 try: |
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353 stream_method = choosed_options["stream-method"] |
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354 except KeyError: |
3028 | 355 log.warning("No stream method choosed") |
386
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356 return |
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357 |
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358 try: |
3028 | 359 file_elt = next(si_elt.elements(NS_SI_FT, "file")) |
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360 except StopIteration: |
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361 pass |
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362 else: |
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363 range_, range_offset, range_length = self._parse_range(file_elt, size) |
386
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364 |
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365 if stream_method == self.host.plugins["XEP-0065"].NAMESPACE: |
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366 plugin = self.host.plugins["XEP-0065"] |
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367 elif stream_method == self.host.plugins["XEP-0047"].NAMESPACE: |
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368 plugin = self.host.plugins["XEP-0047"] |
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369 else: |
3028 | 370 log.warning("Invalid stream method received") |
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371 return |
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372 |
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373 stream_object = stream.FileStreamObject( |
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374 self.host, client, filepath, uid=sid, size=size |
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375 ) |
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376 d = plugin.start_stream(client, stream_object, client.jid, |
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377 jid.JID(iq_elt["from"]), sid) |
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378 d.addCallback(self._send_cb, client, sid, stream_object) |
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379 d.addErrback(self._send_eb, client, sid, stream_object) |
0 | 380 |
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381 def _file_eb(self, failure, filepath, sid, size, client): |
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382 if failure.check(error.StanzaError): |
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383 stanza_err = failure.value |
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384 if stanza_err.code == "403" and stanza_err.condition == "forbidden": |
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385 from_s = stanza_err.stanza["from"] |
3028 | 386 log.info("File transfer refused by {}".format(from_s)) |
387 msg = D_("The contact {} has refused your file").format(from_s) | |
388 title = D_("File refused") | |
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389 xml_tools.quick_note(self.host, client, msg, title, C.XMLUI_DATA_LVL_INFO) |
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390 else: |
3028 | 391 log.warning(_("Error during file transfer")) |
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392 msg = D_( |
3028 | 393 "Something went wrong during the file transfer session initialisation: {reason}" |
394 ).format(reason=str(stanza_err)) | |
395 title = D_("File transfer error") | |
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396 xml_tools.quick_note(self.host, client, msg, title, C.XMLUI_DATA_LVL_ERROR) |
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397 elif failure.check(exceptions.DataError): |
3028 | 398 log.warning("Invalid stanza received") |
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399 else: |
3028 | 400 log.error("Error while proposing stream: {}".format(failure)) |
587
952322b1d490
Remove trailing whitespaces.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
585
diff
changeset
|
401 |
4037
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|
402 def _send_cb(self, __, client, sid, stream_object): |
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403 log.info( |
3028 | 404 _("transfer {sid} successfuly finished [{profile}]").format( |
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405 sid=sid, profile=client.profile |
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406 ) |
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|
407 ) |
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changeset
|
408 stream_object.close() |
64 | 409 |
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|
410 def _send_eb(self, failure, client, sid, stream_object): |
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|
411 log.warning( |
3028 | 412 _("transfer {sid} failed [{profile}]: {reason}").format( |
413 sid=sid, profile=client.profile, reason=str(failure.value) | |
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414 ) |
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415 ) |
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changeset
|
416 stream_object.close() |