Mercurial > libervia-backend
annotate sat/plugins/plugin_xep_0234.py @ 2611:c180ca699e72
install (setup): added python-dateutil as dependency (was already a dependency of Wokkel)
author | Goffi <goffi@goffi.org> |
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date | Thu, 21 Jun 2018 01:21:44 +0200 |
parents | 282d1314d574 |
children | 3e4e78de9cca |
rev | line source |
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1934
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1 #!/usr/bin/env python2 |
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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) |
2483 | 5 # Copyright (C) 2009-2018 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 from sat.tools import stream |
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29 import os.path |
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30 from twisted.words.xish import domish |
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31 from twisted.words.protocols.jabber import jid |
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32 from twisted.python import failure |
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33 from twisted.words.protocols.jabber.xmlstream import XMPPHandler |
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34 from twisted.internet import defer |
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35 from twisted.internet import reactor |
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36 from twisted.internet import error as internet_error |
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37 from collections import namedtuple |
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38 from sat.tools.common import regex |
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39 import mimetypes |
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40 |
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41 |
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42 NS_JINGLE_FT = 'urn:xmpp:jingle:apps:file-transfer:5' |
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43 |
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44 PLUGIN_INFO = { |
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45 C.PI_NAME: "Jingle File Transfer", |
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46 C.PI_IMPORT_NAME: "XEP-0234", |
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47 C.PI_TYPE: "XEP", |
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48 C.PI_MODES: C.PLUG_MODE_BOTH, |
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49 C.PI_PROTOCOLS: ["XEP-0234"], |
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50 C.PI_DEPENDENCIES: ["XEP-0166", "XEP-0300", "FILE"], |
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51 C.PI_MAIN: "XEP_0234", |
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52 C.PI_HANDLER: "yes", |
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53 C.PI_DESCRIPTION: _("""Implementation of Jingle File Transfer""") |
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54 } |
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55 |
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56 EXTRA_ALLOWED = {u'path', u'namespace', u'file_desc', u'file_hash'} |
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57 Range = namedtuple('Range', ('offset', 'length')) |
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58 |
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59 |
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60 class XEP_0234(object): |
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61 # TODO: assure everything is closed when file is sent or session terminate is received |
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62 # 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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63 Range = Range # we copy the class here, so it can be used by other plugins |
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64 |
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65 def __init__(self, host): |
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66 log.info(_("plugin Jingle File Transfer initialization")) |
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67 self.host = host |
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68 host.registerNamespace('jingle-ft', NS_JINGLE_FT) |
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69 self._j = host.plugins["XEP-0166"] # shortcut to access jingle |
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70 self._j.registerApplication(NS_JINGLE_FT, self) |
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71 self._f = host.plugins["FILE"] |
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72 self._f.register(NS_JINGLE_FT, self.fileJingleSend, priority = 10000, method_name=u"Jingle") |
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73 self._hash = self.host.plugins["XEP-0300"] |
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74 host.bridge.addMethod("fileJingleSend", ".plugin", in_sign='ssssa{ss}s', out_sign='', method=self._fileJingleSend, async=True) |
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75 host.bridge.addMethod("fileJingleRequest", ".plugin", in_sign='sssssa{ss}s', out_sign='s', method=self._fileJingleRequest, async=True) |
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76 |
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77 def getHandler(self, client): |
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78 return XEP_0234_handler() |
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79 |
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80 def getProgressId(self, session, content_name): |
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81 """Return a unique progress ID |
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82 |
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83 @param session(dict): jingle session |
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84 @param content_name(unicode): name of the content |
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85 @return (unicode): unique progress id |
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86 """ |
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87 return u'{}_{}'.format(session['id'], content_name) |
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88 |
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89 # generic methods |
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90 |
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91 def buildFileElement(self, name, file_hash=None, hash_algo=None, size=None, mime_type=None, desc=None, |
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92 modified=None, transfer_range=None, path=None, namespace=None, file_elt=None, **kwargs): |
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93 """Generate a <file> element with available metadata |
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94 |
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95 @param file_hash(unicode, None): hash of the file |
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96 empty string to set <hash-used/> element |
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97 @param hash_algo(unicode, None): hash algorithm used |
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98 if file_hash is None and hash_algo is set, a <hash-used/> element will be generated |
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99 @param transfer_range(Range, None): where transfer must start/stop |
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100 @param modified(int, unicode, None): date of last modification |
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101 0 to use current date |
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102 int to use an unix timestamp |
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103 else must be an unicode string which will be used as it (it must be an XMPP time) |
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104 @param file_elt(domish.Element, None): element to use |
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105 None to create a new one |
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106 @param **kwargs: data for plugin extension (ignored by default) |
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107 @return (domish.Element): generated element |
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108 @trigger XEP-0234_buildFileElement(file_elt, extra_args): can be used to extend elements to add |
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109 """ |
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110 if file_elt is None: |
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111 file_elt = domish.Element((NS_JINGLE_FT, u'file')) |
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112 for name, value in ((u'name', name), (u'size', size), ('media-type', mime_type), |
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113 (u'desc', desc), (u'path', path), (u'namespace', namespace)): |
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114 if value is not None: |
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115 file_elt.addElement(name, content=unicode(value)) |
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116 |
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117 if modified is not None: |
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118 if isinstance(modified, int): |
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119 file_elt.addElement(u'date', utils.xmpp_date(modified or None)) |
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120 else: |
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121 file_elt.addElement(u'date', modified) |
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122 elif 'created' in kwargs: |
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123 file_elt.addElement(u'date', utils.xmpp_date(kwargs.pop('created'))) |
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124 |
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125 range_elt = file_elt.addElement(u'range') |
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126 if transfer_range is not None: |
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127 if transfer_range.offset is not None: |
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128 range_elt[u'offset'] = transfer_range.offset |
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129 if transfer_range.length is not None: |
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130 range_elt[u'length'] = transfer_range.length |
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131 if file_hash is not None: |
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132 if not file_hash: |
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133 file_elt.addChild(self._hash.buildHashUsedElt()) |
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134 else: |
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135 file_elt.addChild(self._hash.buildHashElt(file_hash, hash_algo)) |
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136 elif hash_algo is not None: |
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137 file_elt.addChild(self._hash.buildHashUsedElt(hash_algo)) |
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138 self.host.trigger.point(u'XEP-0234_buildFileElement', file_elt, extra_args=kwargs) |
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139 if kwargs: |
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140 for kw in kwargs: |
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141 log.debug('ignored keyword: {}'.format(kw)) |
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142 return file_elt |
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143 |
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144 def buildFileElementFromDict(self, file_data, **kwargs): |
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145 """like buildFileElement but get values from a file_data dict |
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146 |
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147 @param file_data(dict): metadata to use |
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148 @param **kwargs: data to override |
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149 """ |
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150 if kwargs: |
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151 file_data = file_data.copy() |
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152 file_data.update(kwargs) |
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153 return self. buildFileElement(**file_data) |
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154 |
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155 |
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156 def parseFileElement(self, file_elt, file_data=None, given=False, parent_elt=None, keep_empty_range=False): |
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157 """Parse a <file> element and file dictionary accordingly |
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158 |
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159 @param file_data(dict, None): dict where the data will be set |
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160 following keys will be set (and overwritten if they already exist): |
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161 name, file_hash, hash_algo, size, mime_type, desc, path, namespace, range |
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162 if None, a new dict is created |
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163 @param given(bool): if True, prefix hash key with "given_" |
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164 @param parent_elt(domish.Element, None): parent of the file element |
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165 if set, file_elt must not be set |
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166 @param keep_empty_range(bool): if True, keep empty range (i.e. range when offset and length are None) |
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167 empty range are useful to know if a peer_jid can handle range |
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168 @return (dict): file_data |
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169 @trigger XEP-0234_parseFileElement(file_elt, file_data): can be used to parse new elements |
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170 @raise exceptions.NotFound: there is not <file> element in parent_elt |
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171 @raise exceptions.DataError: if file_elt uri is not NS_JINGLE_FT |
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172 """ |
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173 if parent_elt is not None: |
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174 if file_elt is not None: |
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175 raise exceptions.InternalError(u'file_elt must be None if parent_elt is set') |
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176 try: |
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177 file_elt = next(parent_elt.elements(NS_JINGLE_FT, u'file')) |
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178 except StopIteration: |
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179 raise exceptions.NotFound() |
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180 else: |
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181 if not file_elt or file_elt.uri != NS_JINGLE_FT: |
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182 raise exceptions.DataError(u'invalid <file> element: {stanza}'.format(stanza = file_elt.toXml())) |
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183 |
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184 if file_data is None: |
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185 file_data = {} |
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186 |
2512
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187 for name in (u'name', u'desc', u'path', u'namespace'): |
2502
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188 try: |
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189 file_data[name] = unicode(next(file_elt.elements(NS_JINGLE_FT, name))) |
2502
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190 except StopIteration: |
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191 pass |
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192 |
2512
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193 |
2502
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194 name = file_data.get(u'name') |
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195 if name == u'..': |
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196 # we don't want to go to parent dir when joining to a path |
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197 name = u'--' |
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198 file_data[u'name'] = name |
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199 elif name is not None and u'/' in name or u'\\' in name: |
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200 file_data[u'name'] = regex.pathEscape(name) |
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201 |
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202 try: |
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203 file_data[u'mime_type'] = unicode(next(file_elt.elements(NS_JINGLE_FT, u'media-type'))) |
025afb04c10b
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204 except StopIteration: |
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205 pass |
025afb04c10b
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206 |
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207 try: |
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208 file_data[u'size'] = int(unicode(next(file_elt.elements(NS_JINGLE_FT, u'size')))) |
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209 except StopIteration: |
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changeset
|
210 pass |
025afb04c10b
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|
211 |
025afb04c10b
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|
212 try: |
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|
213 file_data[u'modified'] = utils.date_parse(next(file_elt.elements(NS_JINGLE_FT, u'date'))) |
2502
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|
214 except StopIteration: |
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changeset
|
215 pass |
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XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
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changeset
|
216 |
7ad5f2c4e34a
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|
217 try: |
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218 range_elt = file_elt.elements(NS_JINGLE_FT, u'range').next() |
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|
219 except StopIteration: |
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|
220 pass |
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|
221 else: |
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222 offset = range_elt.getAttribute('offset') |
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223 length = range_elt.getAttribute('length') |
2512
025afb04c10b
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|
224 if offset or length or keep_empty_range: |
025afb04c10b
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|
225 file_data[u'transfer_range'] = Range(offset=offset, length=length) |
2502
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|
226 |
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227 prefix = u'given_' if given else u'' |
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228 hash_algo_key, hash_key = u'hash_algo', prefix + u'file_hash' |
7ad5f2c4e34a
XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
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|
229 try: |
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|
230 file_data[hash_algo_key], file_data[hash_key] = self._hash.parseHashElt(file_elt) |
7ad5f2c4e34a
XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
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|
231 except exceptions.NotFound: |
7ad5f2c4e34a
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|
232 pass |
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|
233 |
2512
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|
234 self.host.trigger.point(u'XEP-0234_parseFileElement', file_elt, file_data) |
025afb04c10b
plugin XEP-0234: some cleaning + added triggers to allow plugins to change parsing/generation of <file> element
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changeset
|
235 |
2502
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XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
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|
236 return file_data |
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|
237 |
7ad5f2c4e34a
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|
238 # bridge methods |
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|
239 |
7ad5f2c4e34a
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changeset
|
240 def _fileJingleSend(self, peer_jid, filepath, name="", file_desc="", extra=None, profile=C.PROF_KEY_NONE): |
2489
e2a7bb875957
plugin pipe/stream, file transfert: refactoring and improvments:
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diff
changeset
|
241 client = self.host.getClient(profile) |
2502
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|
242 return self.fileJingleSend(client, jid.JID(peer_jid), filepath, name or None, file_desc or None, extra or None) |
1528
1c71d7335d02
plugin XEP-0234: jingle file transfer first draft
Goffi <goffi@goffi.org>
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diff
changeset
|
243 |
2502
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|
244 @defer.inlineCallbacks |
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|
245 def fileJingleSend(self, client, peer_jid, filepath, name, file_desc=None, extra=None): |
1585
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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|
246 """Send a file using jingle file transfer |
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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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|
247 |
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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|
248 @param peer_jid(jid.JID): destinee jid |
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249 @param filepath(str): absolute path of the file |
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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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|
250 @param name(unicode, None): name of the file |
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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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|
251 @param file_desc(unicode, None): description of the file |
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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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|
252 @return (D(unicode)): progress id |
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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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|
253 """ |
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
|
254 progress_id_d = defer.Deferred() |
2502
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|
255 if extra is None: |
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XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
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diff
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|
256 extra = {} |
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|
257 if file_desc is not None: |
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|
258 extra['file_desc'] = file_desc |
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XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
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|
259 yield self._j.initiate(client, |
7ad5f2c4e34a
XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
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|
260 peer_jid, |
7ad5f2c4e34a
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|
261 [{'app_ns': NS_JINGLE_FT, |
7ad5f2c4e34a
XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
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|
262 'senders': self._j.ROLE_INITIATOR, |
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|
263 'app_kwargs': {'filepath': filepath, |
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264 'name': name, |
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265 'extra': extra, |
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|
266 'progress_id_d': progress_id_d}, |
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|
267 }]) |
7ad5f2c4e34a
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|
268 progress_id = yield progress_id_d |
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diff
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|
269 defer.returnValue(progress_id) |
7ad5f2c4e34a
XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
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diff
changeset
|
270 |
7ad5f2c4e34a
XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
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parents:
2489
diff
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271 def _fileJingleRequest(self, peer_jid, filepath, name="", file_hash="", hash_algo="", extra=None, profile=C.PROF_KEY_NONE): |
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272 client = self.host.getClient(profile) |
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273 return self.fileJingleRequest(client, jid.JID(peer_jid), filepath, name or None, file_hash or None, hash_algo or None, extra or None) |
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274 |
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275 @defer.inlineCallbacks |
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276 def fileJingleRequest(self, client, peer_jid, filepath, name=None, file_hash=None, hash_algo=None, extra=None): |
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277 """Request a file using jingle file transfer |
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278 |
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279 @param peer_jid(jid.JID): destinee jid |
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280 @param filepath(str): absolute path where the file will be downloaded |
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281 @param name(unicode, None): name of the file |
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282 @param file_hash(unicode, None): hash of the file |
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283 @return (D(unicode)): progress id |
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284 """ |
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285 progress_id_d = defer.Deferred() |
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286 if extra is None: |
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287 extra = {} |
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288 if file_hash is not None: |
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289 if hash_algo is None: |
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290 raise ValueError(_(u"hash_algo must be set if file_hash is set")) |
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291 extra['file_hash'] = file_hash |
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292 extra['hash_algo'] = hash_algo |
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293 else: |
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294 if hash_algo is not None: |
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295 raise ValueError(_(u"file_hash must be set if hash_algo is set")) |
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296 yield self._j.initiate(client, |
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297 peer_jid, |
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298 [{'app_ns': NS_JINGLE_FT, |
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299 'senders': self._j.ROLE_RESPONDER, |
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300 'app_kwargs': {'filepath': filepath, |
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301 'name': name, |
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302 'extra': extra, |
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303 'progress_id_d': progress_id_d}, |
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304 }]) |
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305 progress_id = yield progress_id_d |
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306 defer.returnValue(progress_id) |
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307 |
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308 # jingle callbacks |
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309 |
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310 def jingleSessionInit(self, client, session, content_name, filepath, name, extra, progress_id_d): |
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311 if extra is None: |
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312 extra = {} |
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313 else: |
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314 if not EXTRA_ALLOWED.issuperset(extra): |
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315 raise ValueError(_(u"only the following keys are allowed in extra: {keys}").format( |
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316 keys=u', '.join(EXTRA_ALLOWED))) |
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317 progress_id_d.callback(self.getProgressId(session, content_name)) |
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318 content_data = session['contents'][content_name] |
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319 application_data = content_data['application_data'] |
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320 assert 'file_path' not in application_data |
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321 application_data['file_path'] = filepath |
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322 file_data = application_data['file_data'] = {} |
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323 desc_elt = domish.Element((NS_JINGLE_FT, 'description')) |
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324 file_elt = desc_elt.addElement("file") |
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325 |
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326 if content_data[u'senders'] == self._j.ROLE_INITIATOR: |
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327 # we send a file |
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328 if name is None: |
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329 name = os.path.basename(filepath) |
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330 file_data[u'date'] = utils.xmpp_date() |
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331 file_data[u'desc'] = extra.pop(u'file_desc', u'') |
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332 file_data[u'name'] = name |
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333 mime_type = mimetypes.guess_type(name, strict=False)[0] |
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334 if mime_type is not None: |
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335 file_data[u'mime_type'] = mime_type |
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336 file_data[u'size'] = os.path.getsize(filepath) |
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337 if u'namespace' in extra: |
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338 file_data[u'namespace'] = extra[u'namespace'] |
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339 if u'path' in extra: |
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340 file_data[u'path'] = extra[u'path'] |
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341 self.buildFileElementFromDict(file_data, file_elt=file_elt, file_hash=u'') |
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342 else: |
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343 # we request a file |
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344 file_hash = extra.pop(u'file_hash', u'') |
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345 if not name and not file_hash: |
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346 raise ValueError(_(u'you need to provide at least name or file hash')) |
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347 if name: |
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348 file_data[u'name'] = name |
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349 if file_hash: |
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350 file_data[u'file_hash'] = file_hash |
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351 file_data[u'hash_algo'] = extra[u'hash_algo'] |
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352 else: |
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353 file_data[u'hash_algo'] = self._hash.getDefaultAlgo() |
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354 if u'namespace' in extra: |
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355 file_data[u'namespace'] = extra[u'namespace'] |
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356 if u'path' in extra: |
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357 file_data[u'path'] = extra[u'path'] |
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358 self.buildFileElementFromDict(file_data, file_elt=file_elt) |
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359 |
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360 return desc_elt |
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361 |
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362 def jingleRequestConfirmation(self, client, action, session, content_name, desc_elt): |
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363 """This method request confirmation for a jingle session""" |
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364 content_data = session['contents'][content_name] |
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365 senders = content_data[u'senders'] |
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366 if senders not in (self._j.ROLE_INITIATOR, self._j.ROLE_RESPONDER): |
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367 log.warning(u"Bad sender, assuming initiator") |
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368 senders = content_data[u'senders'] = self._j.ROLE_INITIATOR |
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369 # first we grab file informations |
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370 try: |
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371 file_elt = desc_elt.elements(NS_JINGLE_FT, 'file').next() |
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372 except StopIteration: |
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373 raise failure.Failure(exceptions.DataError) |
2502
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374 file_data = {'progress_id': self.getProgressId(session, content_name)} |
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375 |
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376 if senders == self._j.ROLE_RESPONDER: |
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377 # we send the file |
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378 return self._fileSendingRequestConf(client, session, content_data, content_name, file_data, file_elt) |
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379 else: |
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380 # we receive the file |
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381 return self._fileReceivingRequestConf(client, session, content_data, content_name, file_data, file_elt) |
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382 |
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383 @defer.inlineCallbacks |
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384 def _fileSendingRequestConf(self, client, session, content_data, content_name, file_data, file_elt): |
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385 """parse file_elt, and handle file retrieving/permission checking""" |
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386 self.parseFileElement(file_elt, file_data) |
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387 content_data['application_data']['file_data'] = file_data |
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388 finished_d = content_data['finished_d'] = defer.Deferred() |
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389 |
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390 # confirmed_d is a deferred returning confimed value (only used if cont is False) |
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391 cont, confirmed_d = self.host.trigger.returnPoint("XEP-0234_fileSendingRequest", client, session, content_data, content_name, file_data, file_elt) |
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392 if not cont: |
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393 confirmed = yield confirmed_d |
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394 if confirmed: |
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395 args = [client, session, content_name, content_data] |
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396 finished_d.addCallbacks(self._finishedCb, self._finishedEb, args, None, args) |
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397 defer.returnValue(confirmed) |
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|
398 |
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399 log.warning(_(u'File continue is not implemented yet')) |
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400 defer.returnValue(False) |
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|
401 |
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402 def _fileReceivingRequestConf(self, client, session, content_data, content_name, file_data, file_elt): |
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403 """parse file_elt, and handle user permission/file opening""" |
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404 self.parseFileElement(file_elt, file_data, given=True) |
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405 try: |
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406 hash_algo, file_data['given_file_hash'] = self._hash.parseHashElt(file_elt) |
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407 except exceptions.NotFound: |
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408 try: |
2502
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409 hash_algo = self._hash.parseHashUsedElt(file_elt) |
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410 except exceptions.NotFound: |
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|
411 raise failure.Failure(exceptions.DataError) |
1620
4dd07d026214
plugin XEP-0234: hash checksum proper handling
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diff
changeset
|
412 |
4dd07d026214
plugin XEP-0234: hash checksum proper handling
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changeset
|
413 if hash_algo is not None: |
4dd07d026214
plugin XEP-0234: hash checksum proper handling
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changeset
|
414 file_data['hash_algo'] = hash_algo |
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|
415 file_data['hash_hasher'] = hasher = self._hash.getHasher(hash_algo) |
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|
416 file_data['data_cb'] = lambda data: hasher.update(data) |
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diff
changeset
|
417 |
4dd07d026214
plugin XEP-0234: hash checksum proper handling
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changeset
|
418 try: |
1575
833bdb227b16
plugins XEP-0234, file: moved human file size conversion to file plugi
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|
419 file_data['size'] = int(file_data['size']) |
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420 except ValueError: |
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|
421 raise failure.Failure(exceptions.DataError) |
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|
422 |
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423 name = file_data['name'] |
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424 if '/' in name or '\\' in name: |
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425 log.warning(u"File name contain path characters, we replace them: {}".format(name)) |
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426 file_data['name'] = name.replace('/', '_').replace('\\', '_') |
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427 |
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428 content_data['application_data']['file_data'] = file_data |
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|
429 |
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|
430 # now we actualy request permission to user |
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431 def gotConfirmation(confirmed): |
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432 if confirmed: |
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433 args = [client, session, content_name, content_data] |
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434 finished_d.addCallbacks(self._finishedCb, self._finishedEb, args, None, args) |
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435 return confirmed |
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|
436 |
2502
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|
437 # deferred to track end of transfer |
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|
438 finished_d = content_data['finished_d'] = defer.Deferred() |
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439 d = self._f.getDestDir(client, session['peer_jid'], content_data, file_data, stream_object=True) |
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440 d.addCallback(gotConfirmation) |
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441 return d |
1528
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|
442 |
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443 def jingleHandler(self, client, action, session, content_name, desc_elt): |
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444 content_data = session['contents'][content_name] |
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445 application_data = content_data['application_data'] |
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446 if action in (self._j.A_ACCEPTED_ACK,): |
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447 pass |
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448 elif action == self._j.A_SESSION_INITIATE: |
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449 file_elt = desc_elt.elements(NS_JINGLE_FT, 'file').next() |
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|
450 try: |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
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451 file_elt.elements(NS_JINGLE_FT, 'range').next() |
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452 except StopIteration: |
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453 # initiator doesn't manage <range>, but we do so we advertise it |
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454 # FIXME: to be checked |
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plugin XEP-0166, XEP-0234, XEP-0261:
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455 log.debug("adding <range> element") |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
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parents:
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|
456 file_elt.addElement('range') |
1528
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plugin XEP-0234: jingle file transfer first draft
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457 elif action == self._j.A_SESSION_ACCEPT: |
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parents:
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458 assert not 'stream_object' in content_data |
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459 file_data = application_data['file_data'] |
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|
460 file_path = application_data['file_path'] |
2502
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461 senders = content_data[u'senders'] |
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462 if senders != session[u'role']: |
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changeset
|
463 # we are receiving the file |
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464 try: |
7ad5f2c4e34a
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parents:
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465 # did the responder specified the size of the file? |
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parents:
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|
466 file_elt = next(desc_elt.elements(NS_JINGLE_FT, u'file')) |
7ad5f2c4e34a
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467 size_elt = next(file_elt.elements(NS_JINGLE_FT, u'size')) |
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468 size = int(unicode(size_elt)) |
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469 except (StopIteration, ValueError): |
7ad5f2c4e34a
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470 size = None |
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changeset
|
471 # XXX: hash security is not critical here, so we just take the higher mandatory one |
7ad5f2c4e34a
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parents:
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changeset
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472 hasher = file_data['hash_hasher'] = self._hash.getHasher() |
7ad5f2c4e34a
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473 content_data['stream_object'] = stream.FileStreamObject( |
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changeset
|
474 self.host, |
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|
475 client, |
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|
476 file_path, |
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changeset
|
477 mode='wb', |
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changeset
|
478 uid=self.getProgressId(session, content_name), |
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parents:
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changeset
|
479 size=size, |
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parents:
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changeset
|
480 data_cb=lambda data: hasher.update(data), |
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parents:
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|
481 ) |
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changeset
|
482 else: |
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parents:
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changeset
|
483 # we are sending the file |
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changeset
|
484 size = file_data['size'] |
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parents:
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diff
changeset
|
485 # XXX: hash security is not critical here, so we just take the higher mandatory one |
7ad5f2c4e34a
XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
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parents:
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changeset
|
486 hasher = file_data['hash_hasher'] = self._hash.getHasher() |
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parents:
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changeset
|
487 content_data['stream_object'] = stream.FileStreamObject( |
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parents:
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diff
changeset
|
488 self.host, |
7ad5f2c4e34a
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parents:
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changeset
|
489 client, |
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changeset
|
490 file_path, |
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parents:
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diff
changeset
|
491 uid=self.getProgressId(session, content_name), |
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parents:
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diff
changeset
|
492 size=size, |
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diff
changeset
|
493 data_cb=lambda data: hasher.update(data), |
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Goffi <goffi@goffi.org>
parents:
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diff
changeset
|
494 ) |
1571
c668081eba1c
plugins XEP-0234, XEP-0260, XEP-0261: jingle session termination is managed by application (XEP-0234) instead of transport
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parents:
1568
diff
changeset
|
495 finished_d = content_data['finished_d'] = defer.Deferred() |
2489
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changeset
|
496 args = [client, session, content_name, content_data] |
1571
c668081eba1c
plugins XEP-0234, XEP-0260, XEP-0261: jingle session termination is managed by application (XEP-0234) instead of transport
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parents:
1568
diff
changeset
|
497 finished_d.addCallbacks(self._finishedCb, self._finishedEb, args, None, args) |
1528
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changeset
|
498 else: |
1c71d7335d02
plugin XEP-0234: jingle file transfer first draft
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
499 log.warning(u"FIXME: unmanaged action {}".format(action)) |
1c71d7335d02
plugin XEP-0234: jingle file transfer first draft
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parents:
diff
changeset
|
500 return desc_elt |
1c71d7335d02
plugin XEP-0234: jingle file transfer first draft
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parents:
diff
changeset
|
501 |
2489
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parents:
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diff
changeset
|
502 def jingleSessionInfo(self, client, action, session, content_name, jingle_elt): |
1620
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diff
changeset
|
503 """Called on session-info action |
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plugin XEP-0234: hash checksum proper handling
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parents:
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diff
changeset
|
504 |
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changeset
|
505 manage checksum, and ignore <received/> element |
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changeset
|
506 """ |
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changeset
|
507 # TODO: manage <received/> element |
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changeset
|
508 content_data = session['contents'][content_name] |
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diff
changeset
|
509 elts = [elt for elt in jingle_elt.elements() if elt.uri == NS_JINGLE_FT] |
4dd07d026214
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changeset
|
510 if not elts: |
4dd07d026214
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parents:
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changeset
|
511 return |
4dd07d026214
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diff
changeset
|
512 for elt in elts: |
4dd07d026214
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parents:
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diff
changeset
|
513 if elt.name == 'received': |
4dd07d026214
plugin XEP-0234: hash checksum proper handling
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parents:
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diff
changeset
|
514 pass |
4dd07d026214
plugin XEP-0234: hash checksum proper handling
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parents:
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diff
changeset
|
515 elif elt.name == 'checksum': |
4dd07d026214
plugin XEP-0234: hash checksum proper handling
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parents:
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diff
changeset
|
516 # we have received the file hash, we need to parse it |
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diff
changeset
|
517 if content_data['senders'] == session['role']: |
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plugin XEP-0234: hash checksum proper handling
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parents:
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diff
changeset
|
518 log.warning(u"unexpected checksum received while we are the file sender") |
4dd07d026214
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parents:
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changeset
|
519 raise exceptions.DataError |
4dd07d026214
plugin XEP-0234: hash checksum proper handling
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parents:
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changeset
|
520 info_content_name = elt['name'] |
4dd07d026214
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parents:
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diff
changeset
|
521 if info_content_name != content_name: |
4dd07d026214
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parents:
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diff
changeset
|
522 # it was for an other content... |
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changeset
|
523 return |
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changeset
|
524 file_data = content_data['application_data']['file_data'] |
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changeset
|
525 try: |
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parents:
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diff
changeset
|
526 file_elt = elt.elements((NS_JINGLE_FT, 'file')).next() |
4dd07d026214
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changeset
|
527 except StopIteration: |
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changeset
|
528 raise exceptions.DataError |
2502
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parents:
2489
diff
changeset
|
529 algo, file_data['given_file_hash'] = self._hash.parseHashElt(file_elt) |
1620
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changeset
|
530 if algo != file_data.get('hash_algo'): |
2502
7ad5f2c4e34a
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parents:
2489
diff
changeset
|
531 log.warning(u"Hash algorithm used in given hash ({peer_algo}) doesn't correspond to the one we have used ({our_algo}) [{profile}]" |
7ad5f2c4e34a
XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
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changeset
|
532 .format(peer_algo=algo, our_algo=file_data.get('hash_algo'), profile=client.profile)) |
1620
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changeset
|
533 else: |
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changeset
|
534 self._receiverTryTerminate(client, session, content_name, content_data) |
1620
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changeset
|
535 else: |
4dd07d026214
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changeset
|
536 raise NotImplementedError |
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changeset
|
537 |
2502
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parents:
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changeset
|
538 def jingleTerminate(self, client, action, session, content_name, jingle_elt): |
7ad5f2c4e34a
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parents:
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changeset
|
539 if jingle_elt.decline: |
7ad5f2c4e34a
XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents:
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diff
changeset
|
540 # progress is the only way to tell to frontends that session has been declined |
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parents:
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diff
changeset
|
541 progress_id = self.getProgressId(session, content_name) |
7ad5f2c4e34a
XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
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diff
changeset
|
542 self.host.bridge.progressError(progress_id, C.PROGRESS_ERROR_DECLINED, client.profile) |
7ad5f2c4e34a
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parents:
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diff
changeset
|
543 |
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diff
changeset
|
544 def _sendCheckSum(self, client, session, content_name, content_data): |
1620
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changeset
|
545 """Send the session-info with the hash checksum""" |
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546 file_data = content_data['application_data']['file_data'] |
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547 hasher = file_data['hash_hasher'] |
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548 hash_ = hasher.hexdigest() |
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549 log.debug(u"Calculated hash: {}".format(hash_)) |
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550 iq_elt, jingle_elt = self._j.buildSessionInfo(client, session) |
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551 checksum_elt = jingle_elt.addElement((NS_JINGLE_FT, 'checksum')) |
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552 checksum_elt['creator'] = content_data['creator'] |
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553 checksum_elt['name'] = content_name |
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554 file_elt = checksum_elt.addElement('file') |
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555 file_elt.addChild(self._hash.buildHashElt(hash_)) |
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556 iq_elt.send() |
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557 |
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558 def _receiverTryTerminate(self, client, session, content_name, content_data, last_try=False): |
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559 """Try to terminate the session |
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560 |
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561 This method must only be used by the receiver. |
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562 It check if transfer is finished, and hash available, |
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563 if everything is OK, it check hash and terminate the session |
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564 @param last_try(bool): if True this mean than session must be terminated even given hash is not available |
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565 @return (bool): True if session was terminated |
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566 """ |
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567 if not content_data.get('transfer_finished', False): |
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568 return False |
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569 file_data = content_data['application_data']['file_data'] |
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570 given_hash = file_data.get('given_file_hash') |
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571 if given_hash is None: |
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572 if last_try: |
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573 log.warning(u"sender didn't sent hash checksum, we can't check the file [{profile}]".format(profile=client.profile)) |
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574 self._j.delayedContentTerminate(client, session, content_name) |
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575 content_data['stream_object'].close() |
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576 return True |
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577 return False |
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578 hasher = file_data['hash_hasher'] |
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579 hash_ = hasher.hexdigest() |
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580 |
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581 if hash_ == given_hash: |
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582 log.info(u"Hash checked, file was successfully transfered: {}".format(hash_)) |
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583 progress_metadata = {'hash': hash_, |
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584 'hash_algo': file_data['hash_algo'], |
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585 'hash_verified': C.BOOL_TRUE |
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586 } |
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587 error = None |
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588 else: |
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589 log.warning(u"Hash mismatch, the file was not transfered correctly") |
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590 progress_metadata=None |
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591 error = u"Hash mismatch: given={algo}:{given}, calculated={algo}:{our}".format( |
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592 algo = file_data['hash_algo'], |
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593 given = given_hash, |
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594 our = hash_) |
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595 |
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596 self._j.delayedContentTerminate(client, session, content_name) |
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597 content_data['stream_object'].close(progress_metadata, error) |
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598 # we may have the last_try timer still active, so we try to cancel it |
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599 try: |
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600 content_data['last_try_timer'].cancel() |
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601 except (KeyError, internet_error.AlreadyCalled): |
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602 pass |
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603 return True |
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604 |
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605 def _finishedCb(self, dummy, client, session, content_name, content_data): |
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606 log.info(u"File transfer terminated") |
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607 if content_data['senders'] != session['role']: |
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608 # we terminate the session only if we are the receiver, |
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609 # as recommanded in XEP-0234 §2 (after example 6) |
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610 content_data['transfer_finished'] = True |
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611 if not self._receiverTryTerminate(client, session, content_name, content_data): |
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612 # we have not received the hash yet, we wait 5 more seconds |
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613 content_data['last_try_timer'] = reactor.callLater( |
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614 5, self._receiverTryTerminate, client, session, content_name, content_data, last_try=True) |
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615 else: |
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616 # we are the sender, we send the checksum |
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617 self._sendCheckSum(client, session, content_name, content_data) |
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618 content_data['stream_object'].close() |
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619 |
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620 def _finishedEb(self, failure, client, session, content_name, content_data): |
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621 log.warning(u"Error while streaming file: {}".format(failure)) |
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622 content_data['stream_object'].close() |
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623 self._j.contentTerminate(client, session, content_name, reason=self._j.REASON_FAILED_TRANSPORT) |
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624 |
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625 |
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626 class XEP_0234_handler(XMPPHandler): |
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627 implements(iwokkel.IDisco) |
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628 |
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629 def getDiscoInfo(self, requestor, target, nodeIdentifier=''): |
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630 return [disco.DiscoFeature(NS_JINGLE_FT)] |
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631 |
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632 def getDiscoItems(self, requestor, target, nodeIdentifier=''): |
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633 return [] |