Mercurial > libervia-backend
annotate libervia/backend/plugins/plugin_xep_0096.py @ 4228:79a4870cfbdf
migration: fix migration when XEP-0373 or XEP-0384 can't be imported:
Those plugins are using optional modules, and if their importation fails, there is
probably no data to migrate either.
author | Goffi <goffi@goffi.org> |
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date | Sat, 09 Mar 2024 15:13:14 +0100 |
parents | 4b842c1fb686 |
children | e11b13418ba6 |
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.tools import xml_tools |
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30 from libervia.backend.tools import stream |
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31 |
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32 log = getLogger(__name__) |
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33 |
0 | 34 |
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35 NS_SI_FT = "http://jabber.org/protocol/si/profile/file-transfer" |
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36 IQ_SET = '/iq[@type="set"]' |
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37 SI_PROFILE_NAME = "file-transfer" |
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38 SI_PROFILE = "http://jabber.org/protocol/si/profile/" + SI_PROFILE_NAME |
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39 |
0 | 40 PLUGIN_INFO = { |
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41 C.PI_NAME: "XEP-0096 Plugin", |
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42 C.PI_IMPORT_NAME: "XEP-0096", |
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43 C.PI_TYPE: "XEP", |
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44 C.PI_PROTOCOLS: ["XEP-0096"], |
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45 C.PI_DEPENDENCIES: ["XEP-0020", "XEP-0095", "XEP-0065", "XEP-0047", "FILE"], |
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46 C.PI_MAIN: "XEP_0096", |
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47 C.PI_HANDLER: "no", |
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48 C.PI_DESCRIPTION: _("""Implementation of SI File Transfer"""), |
0 | 49 } |
50 | |
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51 |
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52 class XEP_0096(object): |
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53 # 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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54 name = PLUGIN_INFO[C.PI_NAME] |
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55 human_name = D_("Stream Initiation") |
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56 |
0 | 57 def __init__(self, host): |
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58 log.info(_("Plugin XEP_0096 initialization")) |
0 | 59 self.host = host |
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60 self.managed_stream_m = [ |
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61 self.host.plugins["XEP-0065"].NAMESPACE, |
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62 self.host.plugins["XEP-0047"].NAMESPACE, |
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63 ] # Stream methods managed |
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64 self._f = self.host.plugins["FILE"] |
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65 self._f.register(self) |
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66 self._si = self.host.plugins["XEP-0095"] |
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67 self._si.register_si_profile(SI_PROFILE_NAME, self._transfer_request) |
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68 host.bridge.add_method( |
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69 "si_file_send", ".plugin", in_sign="sssss", out_sign="s", method=self._file_send |
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70 ) |
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71 |
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72 async def can_handle_file_send(self, client, peer_jid, filepath): |
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73 return await self.host.hasFeature(client, NS_SI_FT, peer_jid) |
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74 |
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75 def unload(self): |
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76 self._si.unregister_si_profile(SI_PROFILE_NAME) |
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77 |
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78 def _bad_request(self, client, iq_elt, message=None): |
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79 """Send a bad-request error |
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80 |
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81 @param iq_elt(domish.Element): initial <IQ> element of the SI request |
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82 @param message(None, unicode): informational message to display in the logs |
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83 """ |
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84 if message is not None: |
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85 log.warning(message) |
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86 self._si.sendError(client, iq_elt, "bad-request") |
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87 |
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88 def _parse_range(self, parent_elt, file_size): |
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89 """find and parse <range/> element |
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90 |
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91 @param parent_elt(domish.Element): direct parent of the <range/> element |
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92 @return (tuple[bool, int, int]): a tuple with |
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93 - True if range is required |
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94 - range_offset |
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95 - range_length |
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96 """ |
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97 try: |
3028 | 98 range_elt = next(parent_elt.elements(NS_SI_FT, "range")) |
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99 except StopIteration: |
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100 range_ = False |
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101 range_offset = None |
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102 range_length = None |
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103 else: |
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104 range_ = True |
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105 |
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106 try: |
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107 range_offset = int(range_elt["offset"]) |
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108 except KeyError: |
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109 range_offset = 0 |
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110 |
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111 try: |
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112 range_length = int(range_elt["length"]) |
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113 except KeyError: |
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114 range_length = file_size |
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115 |
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116 if range_offset != 0 or range_length != file_size: |
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117 raise NotImplementedError # FIXME |
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118 |
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119 return range_, range_offset, range_length |
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120 |
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121 def _transfer_request(self, client, iq_elt, si_id, si_mime_type, si_elt): |
391 | 122 """Called when a file transfer is requested |
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123 |
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124 @param iq_elt(domish.Element): initial <IQ> element of the SI request |
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125 @param si_id(unicode): Stream Initiation session id |
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126 @param si_mime_type("unicode"): Mime type of the file (or default "application/octet-stream" if unknown) |
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127 @param si_elt(domish.Element): request |
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128 """ |
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129 log.info(_("XEP-0096 file transfer requested")) |
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130 peer_jid = jid.JID(iq_elt["from"]) |
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131 |
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132 try: |
3028 | 133 file_elt = next(si_elt.elements(NS_SI_FT, "file")) |
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134 except StopIteration: |
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135 return self._bad_request( |
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136 client, iq_elt, "No <file/> element found in SI File Transfer request" |
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137 ) |
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138 |
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139 try: |
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140 feature_elt = self.host.plugins["XEP-0020"].get_feature_elt(si_elt) |
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141 except exceptions.NotFound: |
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142 return self._bad_request( |
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143 client, iq_elt, "No <feature/> element found in SI File Transfer request" |
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144 ) |
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145 |
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146 try: |
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147 filename = file_elt["name"] |
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148 file_size = int(file_elt["size"]) |
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149 except (KeyError, ValueError): |
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150 return self._bad_request(client, iq_elt, "Malformed SI File Transfer request") |
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151 |
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152 file_date = file_elt.getAttribute("date") |
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153 file_hash = file_elt.getAttribute("hash") |
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154 |
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155 log.info( |
3028 | 156 "File proposed: name=[{name}] size={size}".format( |
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157 name=filename, size=file_size |
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158 ) |
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159 ) |
587
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160 |
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161 try: |
3028 | 162 file_desc = str(next(file_elt.elements(NS_SI_FT, "desc"))) |
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163 except StopIteration: |
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164 file_desc = "" |
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165 |
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166 try: |
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167 range_, range_offset, range_length = self._parse_range(file_elt, file_size) |
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168 except ValueError: |
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169 return self._bad_request(client, iq_elt, "Malformed SI File Transfer request") |
587
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170 |
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171 try: |
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172 stream_method = self.host.plugins["XEP-0020"].negotiate( |
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173 feature_elt, "stream-method", self.managed_stream_m, namespace=None |
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174 ) |
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175 except KeyError: |
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176 return self._bad_request(client, iq_elt, "No stream method found") |
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177 |
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178 if stream_method: |
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179 if stream_method == self.host.plugins["XEP-0065"].NAMESPACE: |
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180 plugin = self.host.plugins["XEP-0065"] |
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181 elif stream_method == self.host.plugins["XEP-0047"].NAMESPACE: |
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182 plugin = self.host.plugins["XEP-0047"] |
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183 else: |
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184 log.error( |
3028 | 185 "Unknown stream method, this should not happen at this stage, cancelling transfer" |
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186 ) |
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187 else: |
3028 | 188 log.warning("Can't find a valid stream method") |
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189 self._si.sendError(client, iq_elt, "not-acceptable") |
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190 return |
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191 |
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192 # if we are here, the transfer can start, we just need user's agreement |
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193 data = { |
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194 "name": filename, |
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195 "peer_jid": peer_jid, |
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196 "size": file_size, |
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197 "date": file_date, |
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198 "hash": file_hash, |
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199 "desc": file_desc, |
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200 "range": range_, |
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201 "range_offset": range_offset, |
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202 "range_length": range_length, |
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203 "si_id": si_id, |
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204 "progress_id": si_id, |
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205 "stream_method": stream_method, |
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206 "stream_plugin": plugin, |
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207 } |
0 | 208 |
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209 d = defer.ensureDeferred( |
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210 self._f.get_dest_dir(client, peer_jid, data, data, stream_object=True) |
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211 ) |
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212 d.addCallback(self.confirmation_cb, client, iq_elt, data) |
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213 |
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214 def confirmation_cb(self, accepted, client, iq_elt, data): |
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215 """Called on confirmation answer |
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216 |
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217 @param accepted(bool): True if file transfer is accepted |
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218 @param iq_elt(domish.Element): initial SI request |
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219 @param data(dict): session data |
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220 """ |
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221 if not accepted: |
3028 | 222 log.info("File transfer declined") |
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223 self._si.sendError(client, iq_elt, "forbidden") |
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224 return |
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225 # data, timeout, stream_method, failed_methods = client._xep_0096_waiting_for_approval[sid] |
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226 # can_range = data['can_range'] == "True" |
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227 # range_offset = 0 |
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228 # if timeout.active(): |
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229 # timeout.cancel() |
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230 # try: |
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231 # dest_path = frontend_data['dest_path'] |
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232 # except KeyError: |
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233 # log.error(_('dest path not found in frontend_data')) |
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234 # del client._xep_0096_waiting_for_approval[sid] |
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235 # return |
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236 # if stream_method == self.host.plugins["XEP-0065"].NAMESPACE: |
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237 # plugin = self.host.plugins["XEP-0065"] |
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238 # elif stream_method == self.host.plugins["XEP-0047"].NAMESPACE: |
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239 # plugin = self.host.plugins["XEP-0047"] |
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240 # else: |
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241 # log.error(_("Unknown stream method, this should not happen at this stage, cancelling transfer")) |
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242 # del client._xep_0096_waiting_for_approval[sid] |
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243 # return |
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244 |
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245 # file_obj = self._getFileObject(dest_path, can_range) |
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246 # range_offset = file_obj.tell() |
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247 d = data["stream_plugin"].create_session( |
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248 client, data["stream_object"], client.jid, data["peer_jid"], data["si_id"] |
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249 ) |
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250 d.addCallback(self._transfer_cb, client, data) |
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251 d.addErrback(self._transfer_eb, client, data) |
0 | 252 |
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253 # we can send the iq result |
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254 feature_elt = self.host.plugins["XEP-0020"].choose_option( |
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255 {"stream-method": data["stream_method"]}, namespace=None |
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256 ) |
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257 misc_elts = [] |
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258 misc_elts.append(domish.Element((SI_PROFILE, "file"))) |
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259 # if can_range: |
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260 # range_elt = domish.Element((None, "range")) |
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261 # range_elt['offset'] = str(range_offset) |
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262 # #TODO: manage range length |
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263 # misc_elts.append(range_elt) |
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264 self._si.accept_stream(client, iq_elt, feature_elt, misc_elts) |
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265 |
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266 def _transfer_cb(self, __, client, data): |
391 | 267 """Called by the stream method when transfer successfuly finished |
0 | 268 |
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269 @param data: session data |
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270 """ |
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271 # TODO: check hash |
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272 data["stream_object"].close() |
3028 | 273 log.info("Transfer {si_id} successfuly finished".format(**data)) |
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274 |
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275 def _transfer_eb(self, failure, client, data): |
391 | 276 """Called when something went wrong with the transfer |
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277 |
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278 @param id: stream id |
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279 @param data: session data |
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280 """ |
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281 log.warning( |
3028 | 282 "Transfer {si_id} failed: {reason}".format( |
283 reason=str(failure.value), **data | |
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284 ) |
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285 ) |
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286 data["stream_object"].close() |
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287 |
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288 def _file_send(self, peer_jid_s, filepath, name, desc, profile=C.PROF_KEY_NONE): |
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289 client = self.host.get_client(profile) |
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290 return self.file_send( |
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291 client, jid.JID(peer_jid_s), filepath, name or None, desc or None |
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292 ) |
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293 |
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294 def file_send(self, client, peer_jid, filepath, name=None, desc=None, extra=None): |
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295 """Send a file using XEP-0096 |
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296 |
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297 @param peer_jid(jid.JID): recipient |
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298 @param filepath(str): absolute path to the file to send |
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299 @param name(unicode): name of the file to send |
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300 name must not contain "/" characters |
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301 @param desc: description of the file |
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302 @param extra: not used here |
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303 @return: an unique id to identify the transfer |
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304 """ |
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305 feature_elt = self.host.plugins["XEP-0020"].propose_features( |
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306 {"stream-method": self.managed_stream_m}, namespace=None |
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307 ) |
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308 |
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309 file_transfer_elts = [] |
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310 |
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311 statinfo = os.stat(filepath) |
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312 file_elt = domish.Element((SI_PROFILE, "file")) |
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313 file_elt["name"] = name or os.path.basename(filepath) |
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314 assert "/" not in file_elt["name"] |
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315 size = statinfo.st_size |
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316 file_elt["size"] = str(size) |
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317 if desc: |
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318 file_elt.addElement("desc", content=desc) |
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319 file_transfer_elts.append(file_elt) |
0 | 320 |
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321 file_transfer_elts.append(domish.Element((None, "range"))) |
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322 |
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323 sid, offer_d = self._si.propose_stream( |
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324 client, peer_jid, SI_PROFILE, feature_elt, file_transfer_elts |
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325 ) |
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326 args = [filepath, sid, size, client] |
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327 offer_d.addCallbacks(self._file_cb, self._file_eb, args, None, args) |
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328 return sid |
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329 |
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330 def _file_cb(self, result_tuple, filepath, sid, size, client): |
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331 iq_elt, si_elt = result_tuple |
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332 |
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333 try: |
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334 feature_elt = self.host.plugins["XEP-0020"].get_feature_elt(si_elt) |
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335 except exceptions.NotFound: |
3028 | 336 log.warning("No <feature/> element found in result while expected") |
386
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337 return |
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338 |
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339 choosed_options = self.host.plugins["XEP-0020"].get_choosed_options( |
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340 feature_elt, namespace=None |
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341 ) |
386
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342 try: |
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343 stream_method = choosed_options["stream-method"] |
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344 except KeyError: |
3028 | 345 log.warning("No stream method choosed") |
386
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346 return |
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347 |
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348 try: |
3028 | 349 file_elt = next(si_elt.elements(NS_SI_FT, "file")) |
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350 except StopIteration: |
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351 pass |
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352 else: |
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353 range_, range_offset, range_length = self._parse_range(file_elt, size) |
386
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354 |
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355 if stream_method == self.host.plugins["XEP-0065"].NAMESPACE: |
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356 plugin = self.host.plugins["XEP-0065"] |
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357 elif stream_method == self.host.plugins["XEP-0047"].NAMESPACE: |
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358 plugin = self.host.plugins["XEP-0047"] |
386
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359 else: |
3028 | 360 log.warning("Invalid stream method received") |
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361 return |
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362 |
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363 stream_object = stream.FileStreamObject( |
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364 self.host, client, filepath, uid=sid, size=size |
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365 ) |
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366 d = plugin.start_stream(client, stream_object, client.jid, |
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367 jid.JID(iq_elt["from"]), sid) |
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368 d.addCallback(self._send_cb, client, sid, stream_object) |
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369 d.addErrback(self._send_eb, client, sid, stream_object) |
0 | 370 |
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371 def _file_eb(self, failure, filepath, sid, size, client): |
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372 if failure.check(error.StanzaError): |
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373 stanza_err = failure.value |
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374 if stanza_err.code == "403" and stanza_err.condition == "forbidden": |
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375 from_s = stanza_err.stanza["from"] |
3028 | 376 log.info("File transfer refused by {}".format(from_s)) |
377 msg = D_("The contact {} has refused your file").format(from_s) | |
378 title = D_("File refused") | |
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379 xml_tools.quick_note(self.host, client, msg, title, C.XMLUI_DATA_LVL_INFO) |
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380 else: |
3028 | 381 log.warning(_("Error during file transfer")) |
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382 msg = D_( |
3028 | 383 "Something went wrong during the file transfer session initialisation: {reason}" |
384 ).format(reason=str(stanza_err)) | |
385 title = D_("File transfer error") | |
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386 xml_tools.quick_note(self.host, client, msg, title, C.XMLUI_DATA_LVL_ERROR) |
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387 elif failure.check(exceptions.DataError): |
3028 | 388 log.warning("Invalid stanza received") |
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389 else: |
3028 | 390 log.error("Error while proposing stream: {}".format(failure)) |
587
952322b1d490
Remove trailing whitespaces.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
585
diff
changeset
|
391 |
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392 def _send_cb(self, __, client, sid, stream_object): |
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393 log.info( |
3028 | 394 _("transfer {sid} successfuly finished [{profile}]").format( |
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395 sid=sid, profile=client.profile |
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396 ) |
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397 ) |
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398 stream_object.close() |
64 | 399 |
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|
400 def _send_eb(self, failure, client, sid, stream_object): |
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|
401 log.warning( |
3028 | 402 _("transfer {sid} failed [{profile}]: {reason}").format( |
403 sid=sid, profile=client.profile, reason=str(failure.value) | |
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|
404 ) |
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|
405 ) |
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|
406 stream_object.close() |