Mercurial > libervia-backend
annotate src/plugins/plugin_xep_0234.py @ 1622:5b24d6bf5d15
core, bridge: actionsGet:
- added a new mechanism to keep actions until they are answered (or timeout-ed)
- keep_id must be explicitly used on actionNew
- actionsGet is used to retrive these actions
- the mechanism is used in deferXMLUI
author | Goffi <goffi@goffi.org> |
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date | Tue, 17 Nov 2015 21:28:58 +0100 |
parents | 4dd07d026214 |
children | 63cef4dbf2a4 |
rev | line source |
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1 #!/usr/bin/python |
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2 # -*- coding: utf-8 -*- |
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3 |
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4 # SAT plugin for Jingle File Transfer (XEP-0234) |
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5 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015 Jérôme Poisson (goffi@goffi.org) |
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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. |
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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. |
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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/>. |
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19 |
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20 from sat.core.i18n import _ |
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21 from sat.core.constants import Const as C |
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22 from sat.core.log import getLogger |
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23 log = getLogger(__name__) |
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24 from sat.core import exceptions |
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25 from wokkel import disco, iwokkel |
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26 from zope.interface import implements |
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27 from sat.tools import utils |
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28 import os.path |
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29 from twisted.words.xish import domish |
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30 from twisted.words.protocols.jabber import jid |
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31 from twisted.python import failure |
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32 from twisted.words.protocols.jabber.xmlstream import XMPPHandler |
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33 from twisted.internet import defer |
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34 from twisted.internet import reactor |
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35 from twisted.internet import error as internet_error |
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36 |
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37 |
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38 NS_JINGLE_FT = 'urn:xmpp:jingle:apps:file-transfer:4' |
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39 |
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40 PLUGIN_INFO = { |
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41 "name": "Jingle File Transfer", |
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42 "import_name": "XEP-0234", |
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43 "type": "XEP", |
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44 "protocols": ["XEP-0234"], |
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45 "dependencies": ["XEP-0166", "XEP-0300", "FILE"], |
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46 "main": "XEP_0234", |
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47 "handler": "yes", |
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48 "description": _("""Implementation of Jingle File Transfer""") |
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49 } |
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50 |
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51 |
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52 class XEP_0234(object): |
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53 # TODO: assure everything is closed when file is sent or session terminate is received |
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54 # TODO: call self._f.unregister when unloading order will be managing (i.e. when dependencies will be unloaded at the end) |
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55 |
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56 def __init__(self, host): |
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57 log.info(_("plugin Jingle File Transfer initialization")) |
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58 self.host = host |
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59 self._j = host.plugins["XEP-0166"] # shortcut to access jingle |
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60 self._j.registerApplication(NS_JINGLE_FT, self) |
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61 self._f = host.plugins["FILE"] |
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62 self._f.register(NS_JINGLE_FT, self.fileJingleSend, priority = 10000, method_name=u"Jingle") |
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63 self._hash = self.host.plugins["XEP-0300"] |
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64 host.bridge.addMethod("fileJingleSend", ".plugin", in_sign='sssss', out_sign='', method=self._fileJingleSend) |
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65 |
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66 def getHandler(self, profile): |
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67 return XEP_0234_handler() |
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68 |
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69 def _getProgressId(self, session, content_name): |
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70 """Return a unique progress ID |
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71 |
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72 @param session(dict): jingle session |
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73 @param content_name(unicode): name of the content |
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74 @return (unicode): unique progress id |
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75 """ |
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76 return u'{}_{}'.format(session['id'], content_name) |
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77 |
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78 def _fileJingleSend(self, peer_jid, filepath, name="", file_desc="", profile=C.PROF_KEY_NONE): |
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79 return self.fileJingleSend(jid.JID(peer_jid), filepath, name or None, file_desc or None, profile) |
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80 |
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81 def fileJingleSend(self, peer_jid, filepath, name, file_desc=None, profile=C.PROF_KEY_NONE): |
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82 """Send a file using jingle file transfer |
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83 |
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84 @param peer_jid(jid.JID): destinee jid |
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85 @param filepath(str): absolute path of the file |
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86 @param name(unicode, None): name of the file |
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87 @param file_desc(unicode, None): description of the file |
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88 @param profile: %(doc_profile)s |
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89 @return (D(unicode)): progress id |
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90 """ |
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91 progress_id_d = defer.Deferred() |
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92 self._j.initiate(peer_jid, |
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93 [{'app_ns': NS_JINGLE_FT, |
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94 'senders': self._j.ROLE_INITIATOR, |
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95 'app_kwargs': {'filepath': filepath, |
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96 'name': name, |
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97 'file_desc': file_desc, |
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98 'progress_id_d': progress_id_d}, |
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99 }], |
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100 profile=profile) |
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101 return progress_id_d |
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102 |
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103 # jingle callbacks |
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104 |
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105 def jingleSessionInit(self, session, content_name, filepath, name, file_desc, progress_id_d, profile=C.PROF_KEY_NONE): |
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106 progress_id_d.callback(self._getProgressId(session, content_name)) |
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107 content_data = session['contents'][content_name] |
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108 application_data = content_data['application_data'] |
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109 assert 'file_path' not in application_data |
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110 application_data['file_path'] = filepath |
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111 file_data = application_data['file_data'] = {} |
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112 file_data['date'] = utils.xmpp_date() |
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113 file_data['desc'] = file_desc or '' |
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114 file_data['media-type'] = "application/octet-stream" # TODO |
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115 file_data['name'] = os.path.basename(filepath) if name is None else name |
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116 file_data['size'] = os.path.getsize(filepath) |
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117 desc_elt = domish.Element((NS_JINGLE_FT, 'description')) |
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118 file_elt = desc_elt.addElement("file") |
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119 for name in ('date', 'desc', 'media-type', 'name', 'size'): |
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120 file_elt.addElement(name, content=unicode(file_data[name])) |
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121 file_elt.addElement("range") # TODO |
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122 file_elt.addChild(self._hash.buildHashElt()) |
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123 return desc_elt |
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124 |
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125 def jingleRequestConfirmation(self, action, session, content_name, desc_elt, profile): |
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126 """This method request confirmation for a jingle session""" |
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127 content_data = session['contents'][content_name] |
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128 if content_data['senders'] not in (self._j.ROLE_INITIATOR, self._j.ROLE_RESPONDER): |
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129 log.warning(u"Bad sender, assuming initiator") |
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130 content_data['senders'] = self._j.ROLE_INITIATOR |
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131 # first we grab file informations |
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132 try: |
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133 file_elt = desc_elt.elements(NS_JINGLE_FT, 'file').next() |
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134 except StopIteration: |
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135 raise failure.Failure(exceptions.DataError) |
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136 file_data = {'progress_id': self._getProgressId(session, content_name)} |
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137 for name in ('date', 'desc', 'media-type', 'name', 'range', 'size'): |
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138 try: |
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139 file_data[name] = unicode(file_elt.elements(NS_JINGLE_FT, name).next()) |
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140 except StopIteration: |
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141 file_data[name] = '' |
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142 |
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143 try: |
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144 hash_algo, file_data['hash_given'] = self._hash.parseHashElt(file_elt) |
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145 except exceptions.NotFound: |
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146 raise failure.Failure(exceptions.DataError) |
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147 |
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148 if hash_algo is not None: |
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149 file_data['hash_algo'] = hash_algo |
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150 file_data['hash_hasher'] = hasher = self._hash.getHasher(hash_algo) |
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151 file_data['data_cb'] = lambda data: hasher.update(data) |
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152 |
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153 try: |
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154 file_data['size'] = int(file_data['size']) |
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155 except ValueError: |
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156 raise failure.Failure(exceptions.DataError) |
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157 |
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158 name = file_data['name'] |
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159 if '/' in name or '\\' in name: |
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160 log.warning(u"File name contain path characters, we replace them: {}".format(name)) |
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161 file_data['name'] = name.replace('/', '_').replace('\\', '_') |
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162 |
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163 content_data['application_data']['file_data'] = file_data |
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164 |
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165 # now we actualy request permission to user |
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166 def gotConfirmation(confirmed): |
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167 if confirmed: |
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168 finished_d = content_data['finished_d'] = defer.Deferred() |
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169 args = [session, content_name, content_data, profile] |
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170 finished_d.addCallbacks(self._finishedCb, self._finishedEb, args, None, args) |
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171 return confirmed |
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172 |
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173 d = self._f.getDestDir(session['peer_jid'], content_data, file_data, profile) |
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174 d.addCallback(gotConfirmation) |
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175 return d |
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176 |
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177 def jingleHandler(self, action, session, content_name, desc_elt, profile): |
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178 content_data = session['contents'][content_name] |
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179 application_data = content_data['application_data'] |
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180 if action in (self._j.A_ACCEPTED_ACK,): |
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181 pass |
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182 elif action == self._j.A_SESSION_INITIATE: |
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183 file_elt = desc_elt.elements(NS_JINGLE_FT, 'file').next() |
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184 try: |
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185 file_elt.elements(NS_JINGLE_FT, 'range').next() |
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186 except StopIteration: |
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187 # initiator doesn't manage <range>, but we do so we advertise it |
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188 log.debug("adding <range> element") |
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189 file_elt.addElement('range') |
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190 elif action == self._j.A_SESSION_ACCEPT: |
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191 assert not 'file_obj' in content_data |
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192 file_data = application_data['file_data'] |
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193 file_path = application_data['file_path'] |
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194 size = file_data['size'] |
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195 # XXX: hash security is not critical here, so we just take the higher mandatory one |
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196 hasher = file_data['hash_hasher'] = self._hash.getHasher('sha-256') |
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197 content_data['file_obj'] = self._f.File(self.host, |
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198 file_path, |
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199 uid=self._getProgressId(session, content_name), |
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200 size=size, |
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201 data_cb=lambda data: hasher.update(data), |
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202 profile=profile |
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203 ) |
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204 finished_d = content_data['finished_d'] = defer.Deferred() |
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205 args = [session, content_name, content_data, profile] |
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206 finished_d.addCallbacks(self._finishedCb, self._finishedEb, args, None, args) |
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207 else: |
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208 log.warning(u"FIXME: unmanaged action {}".format(action)) |
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209 return desc_elt |
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210 |
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211 def jingleSessionInfo(self, action, session, content_name, jingle_elt, profile): |
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212 """Called on session-info action |
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213 |
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214 manage checksum, and ignore <received/> element |
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215 """ |
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216 # TODO: manage <received/> element |
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217 content_data = session['contents'][content_name] |
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218 elts = [elt for elt in jingle_elt.elements() if elt.uri == NS_JINGLE_FT] |
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219 if not elts: |
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220 return |
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221 for elt in elts: |
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222 if elt.name == 'received': |
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223 pass |
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224 elif elt.name == 'checksum': |
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225 # we have received the file hash, we need to parse it |
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226 if content_data['senders'] == session['role']: |
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227 log.warning(u"unexpected checksum received while we are the file sender") |
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228 raise exceptions.DataError |
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229 info_content_name = elt['name'] |
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230 if info_content_name != content_name: |
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231 # it was for an other content... |
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232 return |
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233 file_data = content_data['application_data']['file_data'] |
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234 try: |
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235 file_elt = elt.elements((NS_JINGLE_FT, 'file')).next() |
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236 except StopIteration: |
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237 raise exceptions.DataError |
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238 algo, file_data['hash_given'] = self._hash.parseHashElt(file_elt) |
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239 if algo != file_data.get('hash_algo'): |
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240 log.warning(u"Hash algorithm used in given hash ({peer_algo}) doesn't correspond to the one we have used ({our_algo})" |
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241 .format(peer_algo=algo, our_algo=file_data.get('hash_algo'))) |
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242 else: |
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243 self._receiverTryTerminate(session, content_name, content_data, profile=profile) |
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244 else: |
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245 raise NotImplementedError |
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246 |
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247 def _sendCheckSum(self, session, content_name, content_data, profile): |
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248 """Send the session-info with the hash checksum""" |
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249 file_data = content_data['application_data']['file_data'] |
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250 hasher = file_data['hash_hasher'] |
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251 hash_ = hasher.hexdigest() |
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252 log.debug(u"Calculated hash: {}".format(hash_)) |
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253 iq_elt, jingle_elt = self._j.buildSessionInfo(session, profile) |
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254 checksum_elt = jingle_elt.addElement((NS_JINGLE_FT, 'checksum')) |
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255 checksum_elt['creator'] = content_data['creator'] |
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256 checksum_elt['name'] = content_name |
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257 file_elt = checksum_elt.addElement('file') |
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258 file_elt.addChild(self._hash.buildHashElt(hash_)) |
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259 iq_elt.send() |
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260 |
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261 def _receiverTryTerminate(self, session, content_name, content_data, last_try=False, profile=C.PROF_KEY_NONE): |
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262 """Try to terminate the session |
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263 |
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264 This method must only be used by the receiver. |
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265 It check if transfer is finished, and hash available, |
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266 if everything is OK, it check hash and terminate the session |
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267 @param last_try(bool): if True this mean than session must be terminated even given hash is not available |
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268 @return (bool): True if session was terminated |
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269 """ |
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270 if not content_data.get('transfer_finished', False): |
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271 return False |
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272 file_data = content_data['application_data']['file_data'] |
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273 hash_given = file_data.get('hash_given') |
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274 if hash_given is None: |
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275 if last_try: |
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276 log.warning(u"sender didn't sent hash checksum, we can't check the file") |
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277 self._j.delayedContentTerminate(session, content_name, profile=profile) |
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278 content_data['file_obj'].close() |
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279 return True |
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280 return False |
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281 hasher = file_data['hash_hasher'] |
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282 hash_ = hasher.hexdigest() |
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283 |
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284 if hash_ == hash_given: |
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285 log.info(u"Hash checked, file was successfully transfered: {}".format(hash_)) |
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286 else: |
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287 log.warning(u"Hash mismatch, the file was not transfered correctly") |
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288 |
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289 self._j.delayedContentTerminate(session, content_name, profile=profile) |
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290 content_data['file_obj'].close() |
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291 # we may have the last_try timer still active, so we try to cancel it |
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292 try: |
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293 content_data['last_try_timer'].cancel() |
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294 except (KeyError, internet_error.AlreadyCalled): |
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295 pass |
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296 return True |
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297 |
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298 def _finishedCb(self, dummy, session, content_name, content_data, profile): |
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299 log.info(u"File transfer completed") |
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300 if content_data['senders'] != session['role']: |
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301 # we terminate the session only if we are the receiver, |
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302 # as recommanded in XEP-0234 §2 (after example 6) |
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303 content_data['transfer_finished'] = True |
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304 if not self._receiverTryTerminate(session, content_name, content_data, profile=profile): |
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305 # we have not received the hash yet, we wait 5 more seconds |
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306 content_data['last_try_timer'] = reactor.callLater( |
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307 5, self._receiverTryTerminate, session, content_name, content_data, last_try=True, profile=profile) |
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308 else: |
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309 # we are the sender, we send the checksum |
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310 self._sendCheckSum(session, content_name, content_data, profile) |
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311 content_data['file_obj'].close() |
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312 |
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313 def _finishedEb(self, failure, session, content_name, content_data, profile): |
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314 log.warning(u"Error while streaming through s5b: {}".format(failure)) |
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315 content_data['file_obj'].close() |
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316 self._j.contentTerminate(session, content_name, reason=self._j.REASON_FAILED_TRANSPORT, profile=profile) |
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317 |
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318 |
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319 class XEP_0234_handler(XMPPHandler): |
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320 implements(iwokkel.IDisco) |
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321 |
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322 def getDiscoInfo(self, requestor, target, nodeIdentifier=''): |
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plugin XEP-0234: jingle file transfer first draft
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323 return [disco.DiscoFeature(NS_JINGLE_FT)] |
1c71d7335d02
plugin XEP-0234: jingle file transfer first draft
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parents:
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changeset
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324 |
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plugin XEP-0234: jingle file transfer first draft
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parents:
diff
changeset
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325 def getDiscoItems(self, requestor, target, nodeIdentifier=''): |
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plugin XEP-0234: jingle file transfer first draft
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parents:
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326 return [] |