Mercurial > libervia-backend
annotate sat/plugins/plugin_xep_0234.py @ 3526:e84ffb48acd4
plugin XEP-0363: allow async callbacks in handlers + method to generate `file-too-large` element
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Wed, 05 May 2021 15:37:33 +0200 |
| parents | be6d91572633 |
| children | bbf92ef05f38 |
| rev | line source |
|---|---|
| 3028 | 1 #!/usr/bin/env python3 |
| 3137 | 2 |
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3 # SàT plugin for Jingle File Transfer (XEP-0234) |
| 3479 | 4 # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org) |
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5 |
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6 # This program is free software: you can redistribute it and/or modify |
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7 # it under the terms of the GNU Affero General Public License as published by |
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8 # the Free Software Foundation, either version 3 of the License, or |
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9 # (at your option) any later version. |
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10 |
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11 # This program is distributed in the hope that it will be useful, |
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12 # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 # GNU Affero General Public License for more details. |
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15 |
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16 # You should have received a copy of the GNU Affero General Public License |
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17 # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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18 |
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19 import os.path |
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20 import mimetypes |
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21 from collections import namedtuple |
| 3028 | 22 from zope.interface import implementer |
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23 from twisted.words.xish import domish |
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24 from twisted.words.protocols.jabber import jid |
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25 from twisted.python import failure |
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26 from twisted.words.protocols.jabber.xmlstream import XMPPHandler |
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27 from twisted.internet import defer |
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28 from twisted.internet import reactor |
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29 from twisted.internet import error as internet_error |
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30 from wokkel import disco, iwokkel |
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31 from sat.core.i18n import _, D_ |
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32 from sat.core.constants import Const as C |
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33 from sat.core.log import getLogger |
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34 from sat.core import exceptions |
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35 from sat.tools import utils |
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36 from sat.tools import stream |
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37 from sat.tools.common import date_utils |
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38 from sat.tools.common import regex |
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39 |
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40 |
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41 log = getLogger(__name__) |
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42 |
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43 NS_JINGLE_FT = "urn:xmpp:jingle:apps:file-transfer:5" |
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44 |
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45 PLUGIN_INFO = { |
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46 C.PI_NAME: "Jingle File Transfer", |
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47 C.PI_IMPORT_NAME: "XEP-0234", |
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48 C.PI_TYPE: "XEP", |
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49 C.PI_MODES: C.PLUG_MODE_BOTH, |
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50 C.PI_PROTOCOLS: ["XEP-0234"], |
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51 C.PI_DEPENDENCIES: ["XEP-0166", "XEP-0300", "FILE"], |
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52 C.PI_MAIN: "XEP_0234", |
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53 C.PI_HANDLER: "yes", |
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54 C.PI_DESCRIPTION: _("""Implementation of Jingle File Transfer"""), |
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55 } |
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56 |
| 3040 | 57 EXTRA_ALLOWED = {"path", "namespace", "file_desc", "file_hash", "hash_algo"} |
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58 Range = namedtuple("Range", ("offset", "length")) |
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59 |
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60 |
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61 class XEP_0234: |
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62 # TODO: assure everything is closed when file is sent or session terminate is received |
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63 # TODO: call self._f.unregister when unloading order will be managing (i.e. when |
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64 # dependencies will be unloaded at the end) |
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65 Range = Range # we copy the class here, so it can be used by other plugins |
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66 name = PLUGIN_INFO[C.PI_NAME] |
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67 human_name = D_("file transfer") |
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68 |
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69 def __init__(self, host): |
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70 log.info(_("plugin Jingle File Transfer initialization")) |
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71 self.host = host |
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72 host.registerNamespace("jingle-ft", NS_JINGLE_FT) |
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73 self._j = host.plugins["XEP-0166"] # shortcut to access jingle |
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74 self._j.registerApplication(NS_JINGLE_FT, self) |
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75 self._f = host.plugins["FILE"] |
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76 self._f.register(self, priority=10000) |
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77 self._hash = self.host.plugins["XEP-0300"] |
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78 host.bridge.addMethod( |
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79 "fileJingleSend", |
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80 ".plugin", |
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81 in_sign="ssssa{ss}s", |
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82 out_sign="", |
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83 method=self._fileSend, |
| 3028 | 84 async_=True, |
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85 ) |
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86 host.bridge.addMethod( |
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87 "fileJingleRequest", |
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88 ".plugin", |
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89 in_sign="sssssa{ss}s", |
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90 out_sign="s", |
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91 method=self._fileJingleRequest, |
| 3028 | 92 async_=True, |
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93 ) |
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94 |
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95 def getHandler(self, client): |
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96 return XEP_0234_handler() |
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97 |
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98 def getProgressId(self, session, content_name): |
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99 """Return a unique progress ID |
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100 |
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101 @param session(dict): jingle session |
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102 @param content_name(unicode): name of the content |
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103 @return (unicode): unique progress id |
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104 """ |
| 3028 | 105 return "{}_{}".format(session["id"], content_name) |
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106 |
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107 async def canHandleFileSend(self, client, peer_jid, filepath): |
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108 if peer_jid.resource: |
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109 return await self.host.hasFeature(client, NS_JINGLE_FT, peer_jid) |
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110 else: |
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111 # if we have a bare jid, Jingle Message Initiation will be tried |
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112 return True |
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113 |
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114 # generic methods |
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115 |
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116 def buildFileElement( |
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117 self, client, name=None, file_hash=None, hash_algo=None, size=None, |
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118 mime_type=None, desc=None, modified=None, transfer_range=None, path=None, |
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119 namespace=None, file_elt=None, **kwargs): |
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120 """Generate a <file> element with available metadata |
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121 |
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122 @param file_hash(unicode, None): hash of the file |
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123 empty string to set <hash-used/> element |
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124 @param hash_algo(unicode, None): hash algorithm used |
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125 if file_hash is None and hash_algo is set, a <hash-used/> element will be |
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126 generated |
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127 @param transfer_range(Range, None): where transfer must start/stop |
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128 @param modified(int, unicode, None): date of last modification |
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129 0 to use current date |
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130 int to use an unix timestamp |
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131 else must be an unicode string which will be used as it (it must be an XMPP |
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132 time) |
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133 @param file_elt(domish.Element, None): element to use |
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134 None to create a new one |
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135 @param **kwargs: data for plugin extension (ignored by default) |
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136 @return (domish.Element): generated element |
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137 @trigger XEP-0234_buildFileElement(file_elt, extra_args): can be used to extend |
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138 elements to add |
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139 """ |
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140 if file_elt is None: |
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142 for name, value in ( |
| 3028 | 143 ("name", name), |
| 144 ("size", size), | |
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145 ("media-type", mime_type), |
| 3028 | 146 ("desc", desc), |
| 147 ("path", path), | |
| 148 ("namespace", namespace), | |
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149 ): |
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150 if value is not None: |
| 3028 | 151 file_elt.addElement(name, content=str(value)) |
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152 |
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153 if modified is not None: |
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154 if isinstance(modified, int): |
| 3028 | 155 file_elt.addElement("date", utils.xmpp_date(modified or None)) |
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156 else: |
| 3028 | 157 file_elt.addElement("date", modified) |
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158 elif "created" in kwargs: |
| 3028 | 159 file_elt.addElement("date", utils.xmpp_date(kwargs.pop("created"))) |
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160 |
| 3028 | 161 range_elt = file_elt.addElement("range") |
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162 if transfer_range is not None: |
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163 if transfer_range.offset is not None: |
| 3028 | 164 range_elt["offset"] = transfer_range.offset |
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165 if transfer_range.length is not None: |
| 3028 | 166 range_elt["length"] = transfer_range.length |
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167 if file_hash is not None: |
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168 if not file_hash: |
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169 file_elt.addChild(self._hash.buildHashUsedElt()) |
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170 else: |
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171 file_elt.addChild(self._hash.buildHashElt(file_hash, hash_algo)) |
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172 elif hash_algo is not None: |
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173 file_elt.addChild(self._hash.buildHashUsedElt(hash_algo)) |
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174 self.host.trigger.point( |
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175 "XEP-0234_buildFileElement", client, file_elt, extra_args=kwargs) |
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176 if kwargs: |
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177 for kw in kwargs: |
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178 log.debug("ignored keyword: {}".format(kw)) |
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179 return file_elt |
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180 |
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181 def buildFileElementFromDict(self, client, file_data, **kwargs): |
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182 """like buildFileElement but get values from a file_data dict |
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183 |
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184 @param file_data(dict): metadata to use |
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185 @param **kwargs: data to override |
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186 """ |
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187 if kwargs: |
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188 file_data = file_data.copy() |
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189 file_data.update(kwargs) |
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190 try: |
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191 file_data["mime_type"] = ( |
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192 f'{file_data.pop("media_type")}/{file_data.pop("media_subtype")}' |
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193 ) |
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194 except KeyError: |
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195 pass |
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196 return self.buildFileElement(client, **file_data) |
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197 |
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198 async def parseFileElement( |
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199 self, client, file_elt, file_data=None, given=False, parent_elt=None, |
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200 keep_empty_range=False): |
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201 """Parse a <file> element and file dictionary accordingly |
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202 |
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203 @param file_data(dict, None): dict where the data will be set |
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204 following keys will be set (and overwritten if they already exist): |
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205 name, file_hash, hash_algo, size, mime_type, desc, path, namespace, range |
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206 if None, a new dict is created |
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207 @param given(bool): if True, prefix hash key with "given_" |
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208 @param parent_elt(domish.Element, None): parent of the file element |
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209 if set, file_elt must not be set |
| 3040 | 210 @param keep_empty_range(bool): if True, keep empty range (i.e. range when offset |
| 211 and length are None). | |
| 212 Empty range is useful to know if a peer_jid can handle range | |
|
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213 @return (dict): file_data |
| 3040 | 214 @trigger XEP-0234_parseFileElement(file_elt, file_data): can be used to parse new |
| 215 elements | |
|
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216 @raise exceptions.NotFound: there is not <file> element in parent_elt |
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217 @raise exceptions.DataError: if file_elt uri is not NS_JINGLE_FT |
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218 """ |
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219 if parent_elt is not None: |
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220 if file_elt is not None: |
|
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221 raise exceptions.InternalError( |
| 3028 | 222 "file_elt must be None if parent_elt is set" |
|
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223 ) |
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224 try: |
| 3028 | 225 file_elt = next(parent_elt.elements(NS_JINGLE_FT, "file")) |
|
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226 except StopIteration: |
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227 raise exceptions.NotFound() |
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228 else: |
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229 if not file_elt or file_elt.uri != NS_JINGLE_FT: |
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230 raise exceptions.DataError( |
| 3028 | 231 "invalid <file> element: {stanza}".format(stanza=file_elt.toXml()) |
|
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232 ) |
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233 |
|
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234 if file_data is None: |
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235 file_data = {} |
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236 |
| 3028 | 237 for name in ("name", "desc", "path", "namespace"): |
|
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238 try: |
| 3028 | 239 file_data[name] = str(next(file_elt.elements(NS_JINGLE_FT, name))) |
|
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240 except StopIteration: |
|
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241 pass |
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242 |
| 3028 | 243 name = file_data.get("name") |
| 244 if name == "..": | |
|
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245 # we don't want to go to parent dir when joining to a path |
| 3028 | 246 name = "--" |
| 247 file_data["name"] = name | |
| 3040 | 248 elif name is not None and ("/" in name or "\\" in name): |
| 3028 | 249 file_data["name"] = regex.pathEscape(name) |
|
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250 |
|
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251 try: |
| 3028 | 252 file_data["mime_type"] = str( |
| 253 next(file_elt.elements(NS_JINGLE_FT, "media-type")) | |
|
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254 ) |
|
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255 except StopIteration: |
|
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256 pass |
|
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257 |
|
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258 try: |
| 3028 | 259 file_data["size"] = int( |
| 260 str(next(file_elt.elements(NS_JINGLE_FT, "size"))) | |
|
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261 ) |
|
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262 except StopIteration: |
|
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263 pass |
|
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264 |
|
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265 try: |
| 3028 | 266 file_data["modified"] = date_utils.date_parse( |
| 267 next(file_elt.elements(NS_JINGLE_FT, "date")) | |
|
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268 ) |
|
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269 except StopIteration: |
|
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|
270 pass |
|
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|
271 |
|
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272 try: |
| 3028 | 273 range_elt = next(file_elt.elements(NS_JINGLE_FT, "range")) |
|
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274 except StopIteration: |
|
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|
275 pass |
|
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|
276 else: |
|
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277 offset = range_elt.getAttribute("offset") |
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278 length = range_elt.getAttribute("length") |
|
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|
279 if offset or length or keep_empty_range: |
| 3028 | 280 file_data["transfer_range"] = Range(offset=offset, length=length) |
|
2502
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|
281 |
| 3028 | 282 prefix = "given_" if given else "" |
| 283 hash_algo_key, hash_key = "hash_algo", prefix + "file_hash" | |
|
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|
284 try: |
|
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285 file_data[hash_algo_key], file_data[hash_key] = self._hash.parseHashElt( |
|
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286 file_elt |
|
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287 ) |
|
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|
288 except exceptions.NotFound: |
|
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|
289 pass |
|
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changeset
|
290 |
|
3314
5887fb414758
component file sharing: add/parse affiliation when possible
Goffi <goffi@goffi.org>
parents:
3303
diff
changeset
|
291 self.host.trigger.point("XEP-0234_parseFileElement", client, file_elt, file_data) |
|
2512
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292 |
|
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293 return file_data |
|
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294 |
|
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295 # bridge methods |
|
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296 |
|
3403
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|
297 def _fileSend( |
|
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298 self, |
|
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299 peer_jid, |
|
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300 filepath, |
|
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|
301 name="", |
|
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|
302 file_desc="", |
|
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|
303 extra=None, |
|
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|
304 profile=C.PROF_KEY_NONE, |
|
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305 ): |
|
2489
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|
306 client = self.host.getClient(profile) |
|
3403
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307 return defer.ensureDeferred(self.fileSend( |
|
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308 client, |
|
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309 jid.JID(peer_jid), |
|
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310 filepath, |
|
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|
311 name or None, |
|
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|
312 file_desc or None, |
|
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|
313 extra or None, |
|
3403
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diff
changeset
|
314 )) |
|
1528
1c71d7335d02
plugin XEP-0234: jingle file transfer first draft
Goffi <goffi@goffi.org>
parents:
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changeset
|
315 |
|
3403
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plugin file, XEP-0234: registering is now done by class + use of async:
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changeset
|
316 async def fileSend( |
|
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317 self, client, peer_jid, filepath, name, file_desc=None, extra=None |
|
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318 ): |
|
1585
846a39900fa6
plugins XEP-0096, XEP-0260, file: sendFile method is managed by file plugin, which choose the best available method + progress_id fix
Goffi <goffi@goffi.org>
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1575
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changeset
|
319 """Send a file using jingle file transfer |
|
846a39900fa6
plugins XEP-0096, XEP-0260, file: sendFile method is managed by file plugin, which choose the best available method + progress_id fix
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320 |
|
846a39900fa6
plugins XEP-0096, XEP-0260, file: sendFile method is managed by file plugin, which choose the best available method + progress_id fix
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1575
diff
changeset
|
321 @param peer_jid(jid.JID): destinee jid |
|
846a39900fa6
plugins XEP-0096, XEP-0260, file: sendFile method is managed by file plugin, which choose the best available method + progress_id fix
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changeset
|
322 @param filepath(str): absolute path of the file |
|
846a39900fa6
plugins XEP-0096, XEP-0260, file: sendFile method is managed by file plugin, which choose the best available method + progress_id fix
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diff
changeset
|
323 @param name(unicode, None): name of the file |
|
846a39900fa6
plugins XEP-0096, XEP-0260, file: sendFile method is managed by file plugin, which choose the best available method + progress_id fix
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diff
changeset
|
324 @param file_desc(unicode, None): description of the file |
|
846a39900fa6
plugins XEP-0096, XEP-0260, file: sendFile method is managed by file plugin, which choose the best available method + progress_id fix
Goffi <goffi@goffi.org>
parents:
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325 @return (D(unicode)): progress id |
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326 """ |
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327 progress_id_d = defer.Deferred() |
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328 if extra is None: |
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329 extra = {} |
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330 if file_desc is not None: |
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331 extra["file_desc"] = file_desc |
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332 await self._j.initiate( |
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333 client, |
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334 peer_jid, |
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335 [ |
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336 { |
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337 "app_ns": NS_JINGLE_FT, |
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338 "senders": self._j.ROLE_INITIATOR, |
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339 "app_kwargs": { |
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340 "filepath": filepath, |
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341 "name": name, |
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342 "extra": extra, |
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343 "progress_id_d": progress_id_d, |
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344 }, |
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345 } |
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346 ], |
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347 ) |
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348 return await progress_id_d |
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349 |
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350 def _fileJingleRequest( |
| 3040 | 351 self, peer_jid, filepath, name="", file_hash="", hash_algo="", extra=None, |
| 352 profile=C.PROF_KEY_NONE): | |
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353 client = self.host.getClient(profile) |
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354 return defer.ensureDeferred(self.fileJingleRequest( |
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355 client, |
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356 jid.JID(peer_jid), |
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357 filepath, |
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358 name or None, |
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359 file_hash or None, |
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360 hash_algo or None, |
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361 extra or None, |
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362 )) |
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363 |
|
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364 async def fileJingleRequest( |
| 3040 | 365 self, client, peer_jid, filepath, name=None, file_hash=None, hash_algo=None, |
| 366 extra=None): | |
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367 """Request a file using jingle file transfer |
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368 |
|
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369 @param peer_jid(jid.JID): destinee jid |
|
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370 @param filepath(str): absolute path where the file will be downloaded |
|
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371 @param name(unicode, None): name of the file |
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372 @param file_hash(unicode, None): hash of the file |
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373 @return (D(unicode)): progress id |
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374 """ |
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375 progress_id_d = defer.Deferred() |
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376 if extra is None: |
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377 extra = {} |
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378 if file_hash is not None: |
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379 if hash_algo is None: |
| 3028 | 380 raise ValueError(_("hash_algo must be set if file_hash is set")) |
|
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381 extra["file_hash"] = file_hash |
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382 extra["hash_algo"] = hash_algo |
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383 else: |
|
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384 if hash_algo is not None: |
| 3028 | 385 raise ValueError(_("file_hash must be set if hash_algo is set")) |
|
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386 await self._j.initiate( |
|
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387 client, |
|
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388 peer_jid, |
|
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389 [ |
|
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390 { |
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391 "app_ns": NS_JINGLE_FT, |
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392 "senders": self._j.ROLE_RESPONDER, |
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393 "app_kwargs": { |
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394 "filepath": filepath, |
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395 "name": name, |
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396 "extra": extra, |
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397 "progress_id_d": progress_id_d, |
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398 }, |
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399 } |
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400 ], |
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401 ) |
|
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|
402 return await progress_id_d |
|
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|
403 |
|
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|
404 # jingle callbacks |
|
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405 |
|
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406 def jingleDescriptionElt( |
|
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407 self, client, session, content_name, filepath, name, extra, progress_id_d |
|
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408 ): |
|
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409 return domish.Element((NS_JINGLE_FT, "description")) |
|
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|
410 |
|
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411 def jingleSessionInit( |
|
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412 self, client, session, content_name, filepath, name, extra, progress_id_d |
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413 ): |
|
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414 if extra is None: |
|
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|
415 extra = {} |
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416 else: |
|
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417 if not EXTRA_ALLOWED.issuperset(extra): |
|
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418 raise ValueError( |
| 3028 | 419 _("only the following keys are allowed in extra: {keys}").format( |
| 420 keys=", ".join(EXTRA_ALLOWED) | |
|
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421 ) |
|
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422 ) |
|
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423 progress_id_d.callback(self.getProgressId(session, content_name)) |
|
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424 content_data = session["contents"][content_name] |
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425 application_data = content_data["application_data"] |
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426 assert "file_path" not in application_data |
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427 application_data["file_path"] = filepath |
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428 file_data = application_data["file_data"] = {} |
|
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|
429 desc_elt = self.jingleDescriptionElt( |
|
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|
430 client, session, content_name, filepath, name, extra, progress_id_d) |
|
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431 file_elt = desc_elt.addElement("file") |
|
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|
432 |
| 3028 | 433 if content_data["senders"] == self._j.ROLE_INITIATOR: |
|
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|
434 # we send a file |
|
2512
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435 if name is None: |
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436 name = os.path.basename(filepath) |
| 3028 | 437 file_data["date"] = utils.xmpp_date() |
| 438 file_data["desc"] = extra.pop("file_desc", "") | |
| 439 file_data["name"] = name | |
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440 mime_type = mimetypes.guess_type(name, strict=False)[0] |
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441 if mime_type is not None: |
| 3028 | 442 file_data["mime_type"] = mime_type |
| 443 file_data["size"] = os.path.getsize(filepath) | |
| 444 if "namespace" in extra: | |
| 445 file_data["namespace"] = extra["namespace"] | |
| 446 if "path" in extra: | |
| 447 file_data["path"] = extra["path"] | |
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448 self.buildFileElementFromDict( |
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449 client, file_data, file_elt=file_elt, file_hash="") |
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450 else: |
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451 # we request a file |
| 3028 | 452 file_hash = extra.pop("file_hash", "") |
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453 if not name and not file_hash: |
| 3028 | 454 raise ValueError(_("you need to provide at least name or file hash")) |
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455 if name: |
| 3028 | 456 file_data["name"] = name |
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457 if file_hash: |
| 3028 | 458 file_data["file_hash"] = file_hash |
| 459 file_data["hash_algo"] = extra["hash_algo"] | |
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460 else: |
| 3028 | 461 file_data["hash_algo"] = self._hash.getDefaultAlgo() |
| 462 if "namespace" in extra: | |
| 463 file_data["namespace"] = extra["namespace"] | |
| 464 if "path" in extra: | |
| 465 file_data["path"] = extra["path"] | |
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466 self.buildFileElementFromDict(client, file_data, file_elt=file_elt) |
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467 |
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468 return desc_elt |
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469 |
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470 async def jingleRequestConfirmation( |
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471 self, client, action, session, content_name, desc_elt |
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472 ): |
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473 """This method request confirmation for a jingle session""" |
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474 content_data = session["contents"][content_name] |
| 3028 | 475 senders = content_data["senders"] |
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476 if senders not in (self._j.ROLE_INITIATOR, self._j.ROLE_RESPONDER): |
| 3028 | 477 log.warning("Bad sender, assuming initiator") |
| 478 senders = content_data["senders"] = self._j.ROLE_INITIATOR | |
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479 # first we grab file informations |
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480 try: |
| 3028 | 481 file_elt = next(desc_elt.elements(NS_JINGLE_FT, "file")) |
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482 except StopIteration: |
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483 raise failure.Failure(exceptions.DataError) |
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484 file_data = {"progress_id": self.getProgressId(session, content_name)} |
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485 |
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486 if senders == self._j.ROLE_RESPONDER: |
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487 # we send the file |
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488 return await self._fileSendingRequestConf( |
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489 client, session, content_data, content_name, file_data, file_elt |
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490 ) |
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491 else: |
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492 # we receive the file |
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493 return await self._fileReceivingRequestConf( |
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494 client, session, content_data, content_name, file_data, file_elt |
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495 ) |
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496 |
|
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497 async def _fileSendingRequestConf( |
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498 self, client, session, content_data, content_name, file_data, file_elt |
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499 ): |
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500 """parse file_elt, and handle file retrieving/permission checking""" |
|
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501 await self.parseFileElement(client, file_elt, file_data) |
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502 content_data["application_data"]["file_data"] = file_data |
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503 finished_d = content_data["finished_d"] = defer.Deferred() |
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504 |
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505 # confirmed_d is a deferred returning confimed value (only used if cont is False) |
|
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506 cont, confirmed_d = self.host.trigger.returnPoint( |
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507 "XEP-0234_fileSendingRequest", |
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508 client, |
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509 session, |
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510 content_data, |
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511 content_name, |
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512 file_data, |
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513 file_elt, |
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514 ) |
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515 if not cont: |
|
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516 confirmed = await confirmed_d |
|
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517 if confirmed: |
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518 args = [client, session, content_name, content_data] |
|
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519 finished_d.addCallbacks( |
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520 self._finishedCb, self._finishedEb, args, None, args |
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521 ) |
|
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522 return confirmed |
|
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523 |
| 3028 | 524 log.warning(_("File continue is not implemented yet")) |
|
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525 return False |
|
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|
526 |
|
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527 async def _fileReceivingRequestConf( |
|
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528 self, client, session, content_data, content_name, file_data, file_elt |
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529 ): |
|
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530 """parse file_elt, and handle user permission/file opening""" |
|
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531 await self.parseFileElement(client, file_elt, file_data, given=True) |
|
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532 try: |
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533 hash_algo, file_data["given_file_hash"] = self._hash.parseHashElt(file_elt) |
|
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534 except exceptions.NotFound: |
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535 try: |
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536 hash_algo = self._hash.parseHashUsedElt(file_elt) |
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537 except exceptions.NotFound: |
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538 raise failure.Failure(exceptions.DataError) |
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539 |
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540 if hash_algo is not None: |
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541 file_data["hash_algo"] = hash_algo |
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542 file_data["hash_hasher"] = hasher = self._hash.getHasher(hash_algo) |
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543 file_data["data_cb"] = lambda data: hasher.update(data) |
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544 |
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545 try: |
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546 file_data["size"] = int(file_data["size"]) |
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547 except ValueError: |
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548 raise failure.Failure(exceptions.DataError) |
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549 |
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550 name = file_data["name"] |
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551 if "/" in name or "\\" in name: |
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552 log.warning( |
| 3028 | 553 "File name contain path characters, we replace them: {}".format(name) |
|
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554 ) |
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555 file_data["name"] = name.replace("/", "_").replace("\\", "_") |
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556 |
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557 content_data["application_data"]["file_data"] = file_data |
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558 |
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559 # now we actualy request permission to user |
|
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560 |
|
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561 # deferred to track end of transfer |
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562 finished_d = content_data["finished_d"] = defer.Deferred() |
|
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563 confirmed = await self._f.getDestDir( |
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564 client, session["peer_jid"], content_data, file_data, stream_object=True |
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565 ) |
|
3333
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566 if confirmed: |
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567 args = [client, session, content_name, content_data] |
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568 finished_d.addCallbacks( |
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569 self._finishedCb, self._finishedEb, args, None, args |
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570 ) |
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571 return confirmed |
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572 |
| 3040 | 573 @defer.inlineCallbacks |
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574 def jingleHandler(self, client, action, session, content_name, desc_elt): |
|
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575 content_data = session["contents"][content_name] |
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576 application_data = content_data["application_data"] |
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577 if action in (self._j.A_ACCEPTED_ACK,): |
|
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578 pass |
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579 elif action == self._j.A_SESSION_INITIATE: |
| 3028 | 580 file_elt = next(desc_elt.elements(NS_JINGLE_FT, "file")) |
|
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|
581 try: |
| 3028 | 582 next(file_elt.elements(NS_JINGLE_FT, "range")) |
|
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583 except StopIteration: |
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584 # initiator doesn't manage <range>, but we do so we advertise it |
| 3040 | 585 # FIXME: to be checked |
|
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586 log.debug("adding <range> element") |
|
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587 file_elt.addElement("range") |
|
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588 elif action == self._j.A_SESSION_ACCEPT: |
|
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589 assert not "stream_object" in content_data |
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590 file_data = application_data["file_data"] |
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591 file_path = application_data["file_path"] |
| 3028 | 592 senders = content_data["senders"] |
| 593 if senders != session["role"]: | |
|
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594 # we are receiving the file |
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595 try: |
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|
596 # did the responder specified the size of the file? |
| 3028 | 597 file_elt = next(desc_elt.elements(NS_JINGLE_FT, "file")) |
| 598 size_elt = next(file_elt.elements(NS_JINGLE_FT, "size")) | |
| 599 size = int(str(size_elt)) | |
|
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|
600 except (StopIteration, ValueError): |
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601 size = None |
| 3040 | 602 # XXX: hash security is not critical here, so we just take the higher |
| 603 # mandatory one | |
|
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604 hasher = file_data["hash_hasher"] = self._hash.getHasher() |
| 3040 | 605 progress_id = self.getProgressId(session, content_name) |
| 606 try: | |
| 607 content_data["stream_object"] = stream.FileStreamObject( | |
| 608 self.host, | |
| 609 client, | |
| 610 file_path, | |
| 611 mode="wb", | |
| 612 uid=progress_id, | |
| 613 size=size, | |
| 614 data_cb=lambda data: hasher.update(data), | |
| 615 ) | |
| 616 except Exception as e: | |
| 617 self.host.bridge.progressError( | |
| 618 progress_id, C.PROGRESS_ERROR_FAILED, client.profile | |
| 619 ) | |
| 620 yield self._j.terminate( | |
| 621 client, self._j.REASON_FAILED_APPLICATION, session) | |
| 622 raise e | |
|
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|
623 else: |
|
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|
624 # we are sending the file |
|
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625 size = file_data["size"] |
| 3040 | 626 # XXX: hash security is not critical here, so we just take the higher |
| 627 # mandatory one | |
|
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628 hasher = file_data["hash_hasher"] = self._hash.getHasher() |
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|
629 content_data["stream_object"] = stream.FileStreamObject( |
|
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|
630 self.host, |
|
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|
631 client, |
|
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|
632 file_path, |
|
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|
633 uid=self.getProgressId(session, content_name), |
|
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|
634 size=size, |
|
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|
635 data_cb=lambda data: hasher.update(data), |
|
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|
636 ) |
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|
637 finished_d = content_data["finished_d"] = defer.Deferred() |
|
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|
638 args = [client, session, content_name, content_data] |
|
1571
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plugins XEP-0234, XEP-0260, XEP-0261: jingle session termination is managed by application (XEP-0234) instead of transport
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1568
diff
changeset
|
639 finished_d.addCallbacks(self._finishedCb, self._finishedEb, args, None, args) |
|
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|
640 else: |
| 3028 | 641 log.warning("FIXME: unmanaged action {}".format(action)) |
| 3040 | 642 defer.returnValue(desc_elt) |
|
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changeset
|
643 |
|
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changeset
|
644 def jingleSessionInfo(self, client, action, session, content_name, jingle_elt): |
|
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|
645 """Called on session-info action |
|
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|
646 |
|
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|
647 manage checksum, and ignore <received/> element |
|
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|
648 """ |
|
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|
649 # TODO: manage <received/> element |
|
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650 content_data = session["contents"][content_name] |
|
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|
651 elts = [elt for elt in jingle_elt.elements() if elt.uri == NS_JINGLE_FT] |
|
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|
652 if not elts: |
|
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|
653 return |
|
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|
654 for elt in elts: |
|
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|
655 if elt.name == "received": |
|
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|
656 pass |
|
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|
657 elif elt.name == "checksum": |
|
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|
658 # we have received the file hash, we need to parse it |
|
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|
659 if content_data["senders"] == session["role"]: |
|
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|
660 log.warning( |
| 3028 | 661 "unexpected checksum received while we are the file sender" |
|
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|
662 ) |
|
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|
663 raise exceptions.DataError |
|
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|
664 info_content_name = elt["name"] |
|
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|
665 if info_content_name != content_name: |
|
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|
666 # it was for an other content... |
|
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|
667 return |
|
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|
668 file_data = content_data["application_data"]["file_data"] |
|
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|
669 try: |
| 3028 | 670 file_elt = next(elt.elements((NS_JINGLE_FT, "file"))) |
|
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|
671 except StopIteration: |
|
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|
672 raise exceptions.DataError |
|
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|
673 algo, file_data["given_file_hash"] = self._hash.parseHashElt(file_elt) |
|
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|
674 if algo != file_data.get("hash_algo"): |
|
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|
675 log.warning( |
| 3028 | 676 "Hash algorithm used in given hash ({peer_algo}) doesn't correspond to the one we have used ({our_algo}) [{profile}]".format( |
|
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|
677 peer_algo=algo, |
|
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|
678 our_algo=file_data.get("hash_algo"), |
|
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|
679 profile=client.profile, |
|
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|
680 ) |
|
56f94936df1e
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changeset
|
681 ) |
|
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|
682 else: |
|
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|
683 self._receiverTryTerminate( |
|
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|
684 client, session, content_name, content_data |
|
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|
685 ) |
|
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686 else: |
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687 raise NotImplementedError |
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688 |
|
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689 def jingleTerminate(self, client, action, session, content_name, jingle_elt): |
|
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690 if jingle_elt.decline: |
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691 # progress is the only way to tell to frontends that session has been declined |
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692 progress_id = self.getProgressId(session, content_name) |
|
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693 self.host.bridge.progressError( |
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694 progress_id, C.PROGRESS_ERROR_DECLINED, client.profile |
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695 ) |
| 3040 | 696 elif not jingle_elt.success: |
| 697 progress_id = self.getProgressId(session, content_name) | |
| 698 first_child = jingle_elt.firstChildElement() | |
| 699 if first_child is not None: | |
| 700 reason = first_child.name | |
| 701 else: | |
| 702 reason = C.PROGRESS_ERROR_FAILED | |
| 703 self.host.bridge.progressError( | |
| 704 progress_id, reason, client.profile | |
| 705 ) | |
|
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|
706 |
|
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707 def _sendCheckSum(self, client, session, content_name, content_data): |
|
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708 """Send the session-info with the hash checksum""" |
|
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709 file_data = content_data["application_data"]["file_data"] |
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710 hasher = file_data["hash_hasher"] |
|
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711 hash_ = hasher.hexdigest() |
| 3028 | 712 log.debug("Calculated hash: {}".format(hash_)) |
|
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713 iq_elt, jingle_elt = self._j.buildSessionInfo(client, session) |
|
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714 checksum_elt = jingle_elt.addElement((NS_JINGLE_FT, "checksum")) |
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715 checksum_elt["creator"] = content_data["creator"] |
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716 checksum_elt["name"] = content_name |
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717 file_elt = checksum_elt.addElement("file") |
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718 file_elt.addChild(self._hash.buildHashElt(hash_)) |
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719 iq_elt.send() |
|
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720 |
|
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721 def _receiverTryTerminate( |
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722 self, client, session, content_name, content_data, last_try=False |
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723 ): |
|
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724 """Try to terminate the session |
|
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725 |
|
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726 This method must only be used by the receiver. |
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727 It check if transfer is finished, and hash available, |
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728 if everything is OK, it check hash and terminate the session |
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729 @param last_try(bool): if True this mean than session must be terminated even given hash is not available |
|
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730 @return (bool): True if session was terminated |
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731 """ |
|
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732 if not content_data.get("transfer_finished", False): |
|
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733 return False |
|
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734 file_data = content_data["application_data"]["file_data"] |
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735 given_hash = file_data.get("given_file_hash") |
|
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|
736 if given_hash is None: |
|
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737 if last_try: |
|
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|
738 log.warning( |
| 3028 | 739 "sender didn't sent hash checksum, we can't check the file [{profile}]".format( |
|
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740 profile=client.profile |
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741 ) |
|
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742 ) |
|
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|
743 self._j.delayedContentTerminate(client, session, content_name) |
|
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744 content_data["stream_object"].close() |
|
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|
745 return True |
|
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|
746 return False |
|
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747 hasher = file_data["hash_hasher"] |
| 3040 | 748 hash_ = hasher.hexdigest() |
|
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|
749 |
|
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|
750 if hash_ == given_hash: |
| 3040 | 751 log.info(f"Hash checked, file was successfully transfered: {hash_}") |
|
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752 progress_metadata = { |
|
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753 "hash": hash_, |
|
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754 "hash_algo": file_data["hash_algo"], |
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755 "hash_verified": C.BOOL_TRUE, |
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756 } |
|
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|
757 error = None |
|
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758 else: |
| 3028 | 759 log.warning("Hash mismatch, the file was not transfered correctly") |
|
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|
760 progress_metadata = None |
| 3028 | 761 error = "Hash mismatch: given={algo}:{given}, calculated={algo}:{our}".format( |
|
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762 algo=file_data["hash_algo"], given=given_hash, our=hash_ |
|
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|
763 ) |
|
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|
764 |
|
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|
765 self._j.delayedContentTerminate(client, session, content_name) |
|
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766 content_data["stream_object"].close(progress_metadata, error) |
|
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|
767 # we may have the last_try timer still active, so we try to cancel it |
|
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|
768 try: |
|
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|
769 content_data["last_try_timer"].cancel() |
|
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|
770 except (KeyError, internet_error.AlreadyCalled): |
|
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|
771 pass |
|
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|
772 return True |
|
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|
773 |
|
2765
378188abe941
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|
774 def _finishedCb(self, __, client, session, content_name, content_data): |
| 3028 | 775 log.info("File transfer terminated") |
|
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|
776 if content_data["senders"] != session["role"]: |
|
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|
777 # we terminate the session only if we are the receiver, |
|
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|
778 # as recommanded in XEP-0234 §2 (after example 6) |
|
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|
779 content_data["transfer_finished"] = True |
|
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|
780 if not self._receiverTryTerminate( |
|
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|
781 client, session, content_name, content_data |
|
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|
782 ): |
|
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|
783 # we have not received the hash yet, we wait 5 more seconds |
|
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|
784 content_data["last_try_timer"] = reactor.callLater( |
|
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|
785 5, |
|
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|
786 self._receiverTryTerminate, |
|
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|
787 client, |
|
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|
788 session, |
|
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|
789 content_name, |
|
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|
790 content_data, |
|
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|
791 last_try=True, |
|
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|
792 ) |
|
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|
793 else: |
|
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|
794 # we are the sender, we send the checksum |
|
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|
795 self._sendCheckSum(client, session, content_name, content_data) |
|
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|
796 content_data["stream_object"].close() |
|
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changeset
|
797 |
|
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|
798 def _finishedEb(self, failure, client, session, content_name, content_data): |
| 3028 | 799 log.warning("Error while streaming file: {}".format(failure)) |
|
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|
800 content_data["stream_object"].close() |
|
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|
801 self._j.contentTerminate( |
|
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|
802 client, session, content_name, reason=self._j.REASON_FAILED_TRANSPORT |
|
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|
803 ) |
|
1571
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diff
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|
804 |
|
1528
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|
805 |
| 3028 | 806 @implementer(iwokkel.IDisco) |
|
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diff
changeset
|
807 class XEP_0234_handler(XMPPHandler): |
|
1c71d7335d02
plugin XEP-0234: jingle file transfer first draft
Goffi <goffi@goffi.org>
parents:
diff
changeset
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808 |
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2624
56f94936df1e
code style reformatting using black
Goffi <goffi@goffi.org>
parents:
2612
diff
changeset
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809 def getDiscoInfo(self, requestor, target, nodeIdentifier=""): |
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1528
1c71d7335d02
plugin XEP-0234: jingle file transfer first draft
Goffi <goffi@goffi.org>
parents:
diff
changeset
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810 return [disco.DiscoFeature(NS_JINGLE_FT)] |
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1c71d7335d02
plugin XEP-0234: jingle file transfer first draft
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
811 |
|
2624
56f94936df1e
code style reformatting using black
Goffi <goffi@goffi.org>
parents:
2612
diff
changeset
|
812 def getDiscoItems(self, requestor, target, nodeIdentifier=""): |
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1528
1c71d7335d02
plugin XEP-0234: jingle file transfer first draft
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
813 return [] |