Mercurial > libervia-backend
annotate sat/plugins/plugin_xep_0234.py @ 3303:f17379123571
plugin list of interest: new "interestRetract" method
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Fri, 19 Jun 2020 15:37:02 +0200 |
| parents | 559a625a236b |
| children | 5887fb414758 |
| rev | line source |
|---|---|
| 3028 | 1 #!/usr/bin/env python3 |
| 3137 | 2 |
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3 # SAT plugin for Jingle File Transfer (XEP-0234) |
| 3136 | 4 # Copyright (C) 2009-2020 Jérôme Poisson (goffi@goffi.org) |
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5 |
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6 # This program is free software: you can redistribute it and/or modify |
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7 # it under the terms of the GNU Affero General Public License as published by |
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8 # the Free Software Foundation, either version 3 of the License, or |
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9 # (at your option) any later version. |
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10 |
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11 # This program is distributed in the hope that it will be useful, |
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12 # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 # GNU Affero General Public License for more details. |
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15 |
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16 # You should have received a copy of the GNU Affero General Public License |
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17 # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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18 |
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19 from sat.core.i18n import _ |
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20 from sat.core.constants import Const as C |
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21 from sat.core.log import getLogger |
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22 |
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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 |
| 3028 | 26 from zope.interface import implementer |
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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 from sat.tools.common import date_utils |
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30 import os.path |
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31 from twisted.words.xish import domish |
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32 from twisted.words.protocols.jabber import jid |
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33 from twisted.python import failure |
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34 from twisted.words.protocols.jabber.xmlstream import XMPPHandler |
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35 from twisted.internet import defer |
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36 from twisted.internet import reactor |
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37 from twisted.internet import error as internet_error |
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38 from collections import namedtuple |
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39 from sat.tools.common import regex |
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40 import mimetypes |
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41 |
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42 |
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43 NS_JINGLE_FT = "urn:xmpp:jingle:apps:file-transfer:5" |
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44 |
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45 PLUGIN_INFO = { |
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46 C.PI_NAME: "Jingle File Transfer", |
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47 C.PI_IMPORT_NAME: "XEP-0234", |
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48 C.PI_TYPE: "XEP", |
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49 C.PI_MODES: C.PLUG_MODE_BOTH, |
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50 C.PI_PROTOCOLS: ["XEP-0234"], |
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51 C.PI_DEPENDENCIES: ["XEP-0166", "XEP-0300", "FILE"], |
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52 C.PI_MAIN: "XEP_0234", |
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53 C.PI_HANDLER: "yes", |
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54 C.PI_DESCRIPTION: _("""Implementation of Jingle File Transfer"""), |
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55 } |
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56 |
| 3040 | 57 EXTRA_ALLOWED = {"path", "namespace", "file_desc", "file_hash", "hash_algo"} |
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58 Range = namedtuple("Range", ("offset", "length")) |
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59 |
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60 |
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61 class XEP_0234(object): |
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62 # TODO: assure everything is closed when file is sent or session terminate is received |
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63 # TODO: call self._f.unregister when unloading order will be managing (i.e. when dependencies will be unloaded at the end) |
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64 Range = Range # we copy the class here, so it can be used by other plugins |
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65 |
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66 def __init__(self, host): |
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67 log.info(_("plugin Jingle File Transfer initialization")) |
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68 self.host = host |
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69 host.registerNamespace("jingle-ft", NS_JINGLE_FT) |
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70 self._j = host.plugins["XEP-0166"] # shortcut to access jingle |
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71 self._j.registerApplication(NS_JINGLE_FT, self) |
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72 self._f = host.plugins["FILE"] |
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73 self._f.register( |
| 3028 | 74 NS_JINGLE_FT, self.fileJingleSend, priority=10000, method_name="Jingle" |
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75 ) |
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76 self._hash = self.host.plugins["XEP-0300"] |
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77 host.bridge.addMethod( |
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78 "fileJingleSend", |
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79 ".plugin", |
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80 in_sign="ssssa{ss}s", |
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81 out_sign="", |
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82 method=self._fileJingleSend, |
| 3028 | 83 async_=True, |
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84 ) |
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85 host.bridge.addMethod( |
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86 "fileJingleRequest", |
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87 ".plugin", |
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88 in_sign="sssssa{ss}s", |
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89 out_sign="s", |
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90 method=self._fileJingleRequest, |
| 3028 | 91 async_=True, |
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92 ) |
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93 |
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94 def getHandler(self, client): |
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95 return XEP_0234_handler() |
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96 |
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97 def getProgressId(self, session, content_name): |
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98 """Return a unique progress ID |
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99 |
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100 @param session(dict): jingle session |
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101 @param content_name(unicode): name of the content |
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102 @return (unicode): unique progress id |
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103 """ |
| 3028 | 104 return "{}_{}".format(session["id"], content_name) |
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105 |
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106 # generic methods |
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107 |
| 3040 | 108 def buildFileElement(self, name=None, file_hash=None, hash_algo=None, size=None, |
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109 mime_type=None, desc=None, modified=None, transfer_range=None, path=None, |
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110 namespace=None, file_elt=None, **kwargs): |
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111 """Generate a <file> element with available metadata |
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112 |
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113 @param file_hash(unicode, None): hash of the file |
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114 empty string to set <hash-used/> element |
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115 @param hash_algo(unicode, None): hash algorithm used |
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116 if file_hash is None and hash_algo is set, a <hash-used/> element will be generated |
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117 @param transfer_range(Range, None): where transfer must start/stop |
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118 @param modified(int, unicode, None): date of last modification |
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119 0 to use current date |
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120 int to use an unix timestamp |
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121 else must be an unicode string which will be used as it (it must be an XMPP time) |
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122 @param file_elt(domish.Element, None): element to use |
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123 None to create a new one |
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124 @param **kwargs: data for plugin extension (ignored by default) |
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125 @return (domish.Element): generated element |
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126 @trigger XEP-0234_buildFileElement(file_elt, extra_args): can be used to extend elements to add |
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127 """ |
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128 if file_elt is None: |
| 3028 | 129 file_elt = domish.Element((NS_JINGLE_FT, "file")) |
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130 for name, value in ( |
| 3028 | 131 ("name", name), |
| 132 ("size", size), | |
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133 ("media-type", mime_type), |
| 3028 | 134 ("desc", desc), |
| 135 ("path", path), | |
| 136 ("namespace", namespace), | |
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137 ): |
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138 if value is not None: |
| 3028 | 139 file_elt.addElement(name, content=str(value)) |
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140 |
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141 if modified is not None: |
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142 if isinstance(modified, int): |
| 3028 | 143 file_elt.addElement("date", utils.xmpp_date(modified or None)) |
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144 else: |
| 3028 | 145 file_elt.addElement("date", modified) |
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146 elif "created" in kwargs: |
| 3028 | 147 file_elt.addElement("date", utils.xmpp_date(kwargs.pop("created"))) |
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148 |
| 3028 | 149 range_elt = file_elt.addElement("range") |
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150 if transfer_range is not None: |
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151 if transfer_range.offset is not None: |
| 3028 | 152 range_elt["offset"] = transfer_range.offset |
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153 if transfer_range.length is not None: |
| 3028 | 154 range_elt["length"] = transfer_range.length |
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155 if file_hash is not None: |
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156 if not file_hash: |
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157 file_elt.addChild(self._hash.buildHashUsedElt()) |
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158 else: |
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159 file_elt.addChild(self._hash.buildHashElt(file_hash, hash_algo)) |
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160 elif hash_algo is not None: |
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161 file_elt.addChild(self._hash.buildHashUsedElt(hash_algo)) |
| 3028 | 162 self.host.trigger.point("XEP-0234_buildFileElement", file_elt, extra_args=kwargs) |
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163 if kwargs: |
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164 for kw in kwargs: |
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165 log.debug("ignored keyword: {}".format(kw)) |
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166 return file_elt |
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167 |
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168 def buildFileElementFromDict(self, file_data, **kwargs): |
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169 """like buildFileElement but get values from a file_data dict |
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170 |
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171 @param file_data(dict): metadata to use |
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172 @param **kwargs: data to override |
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173 """ |
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174 if kwargs: |
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175 file_data = file_data.copy() |
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176 file_data.update(kwargs) |
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177 return self.buildFileElement(**file_data) |
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178 |
| 3040 | 179 def parseFileElement(self, file_elt, file_data=None, given=False, parent_elt=None, |
| 180 keep_empty_range=False,): | |
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181 """Parse a <file> element and file dictionary accordingly |
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182 |
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183 @param file_data(dict, None): dict where the data will be set |
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184 following keys will be set (and overwritten if they already exist): |
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185 name, file_hash, hash_algo, size, mime_type, desc, path, namespace, range |
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186 if None, a new dict is created |
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187 @param given(bool): if True, prefix hash key with "given_" |
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188 @param parent_elt(domish.Element, None): parent of the file element |
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189 if set, file_elt must not be set |
| 3040 | 190 @param keep_empty_range(bool): if True, keep empty range (i.e. range when offset |
| 191 and length are None). | |
| 192 Empty range is useful to know if a peer_jid can handle range | |
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193 @return (dict): file_data |
| 3040 | 194 @trigger XEP-0234_parseFileElement(file_elt, file_data): can be used to parse new |
| 195 elements | |
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196 @raise exceptions.NotFound: there is not <file> element in parent_elt |
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197 @raise exceptions.DataError: if file_elt uri is not NS_JINGLE_FT |
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198 """ |
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199 if parent_elt is not None: |
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200 if file_elt is not None: |
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201 raise exceptions.InternalError( |
| 3028 | 202 "file_elt must be None if parent_elt is set" |
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203 ) |
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204 try: |
| 3028 | 205 file_elt = next(parent_elt.elements(NS_JINGLE_FT, "file")) |
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206 except StopIteration: |
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207 raise exceptions.NotFound() |
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208 else: |
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209 if not file_elt or file_elt.uri != NS_JINGLE_FT: |
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210 raise exceptions.DataError( |
| 3028 | 211 "invalid <file> element: {stanza}".format(stanza=file_elt.toXml()) |
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212 ) |
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213 |
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214 if file_data is None: |
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215 file_data = {} |
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216 |
| 3028 | 217 for name in ("name", "desc", "path", "namespace"): |
|
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218 try: |
| 3028 | 219 file_data[name] = str(next(file_elt.elements(NS_JINGLE_FT, name))) |
|
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220 except StopIteration: |
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221 pass |
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222 |
| 3028 | 223 name = file_data.get("name") |
| 224 if name == "..": | |
|
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225 # we don't want to go to parent dir when joining to a path |
| 3028 | 226 name = "--" |
| 227 file_data["name"] = name | |
| 3040 | 228 elif name is not None and ("/" in name or "\\" in name): |
| 3028 | 229 file_data["name"] = regex.pathEscape(name) |
|
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230 |
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231 try: |
| 3028 | 232 file_data["mime_type"] = str( |
| 233 next(file_elt.elements(NS_JINGLE_FT, "media-type")) | |
|
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234 ) |
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235 except StopIteration: |
|
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236 pass |
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237 |
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238 try: |
| 3028 | 239 file_data["size"] = int( |
| 240 str(next(file_elt.elements(NS_JINGLE_FT, "size"))) | |
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241 ) |
|
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242 except StopIteration: |
|
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243 pass |
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244 |
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245 try: |
| 3028 | 246 file_data["modified"] = date_utils.date_parse( |
| 247 next(file_elt.elements(NS_JINGLE_FT, "date")) | |
|
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248 ) |
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249 except StopIteration: |
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250 pass |
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251 |
|
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252 try: |
| 3028 | 253 range_elt = next(file_elt.elements(NS_JINGLE_FT, "range")) |
|
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254 except StopIteration: |
|
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255 pass |
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256 else: |
|
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257 offset = range_elt.getAttribute("offset") |
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258 length = range_elt.getAttribute("length") |
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259 if offset or length or keep_empty_range: |
| 3028 | 260 file_data["transfer_range"] = Range(offset=offset, length=length) |
|
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261 |
| 3028 | 262 prefix = "given_" if given else "" |
| 263 hash_algo_key, hash_key = "hash_algo", prefix + "file_hash" | |
|
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264 try: |
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265 file_data[hash_algo_key], file_data[hash_key] = self._hash.parseHashElt( |
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266 file_elt |
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267 ) |
|
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268 except exceptions.NotFound: |
|
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269 pass |
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270 |
| 3028 | 271 self.host.trigger.point("XEP-0234_parseFileElement", file_elt, file_data) |
|
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272 |
|
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273 return file_data |
|
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274 |
|
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275 # bridge methods |
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276 |
|
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277 def _fileJingleSend( |
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278 self, |
|
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279 peer_jid, |
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280 filepath, |
|
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281 name="", |
|
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282 file_desc="", |
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283 extra=None, |
|
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|
284 profile=C.PROF_KEY_NONE, |
|
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285 ): |
|
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|
286 client = self.host.getClient(profile) |
|
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287 return self.fileJingleSend( |
|
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|
288 client, |
|
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|
289 jid.JID(peer_jid), |
|
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|
290 filepath, |
|
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|
291 name or None, |
|
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|
292 file_desc or None, |
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|
293 extra or None, |
|
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|
294 ) |
|
1528
1c71d7335d02
plugin XEP-0234: jingle file transfer first draft
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|
295 |
|
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|
296 @defer.inlineCallbacks |
|
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297 def fileJingleSend( |
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298 self, client, peer_jid, filepath, name, file_desc=None, extra=None |
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299 ): |
|
1585
846a39900fa6
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|
300 """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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301 |
|
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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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|
302 @param peer_jid(jid.JID): destinee jid |
|
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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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|
303 @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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|
304 @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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|
305 @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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|
306 @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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|
307 """ |
|
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
|
308 progress_id_d = defer.Deferred() |
|
2502
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|
309 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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|
310 extra = {} |
|
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|
311 if file_desc is not None: |
|
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|
312 extra["file_desc"] = file_desc |
|
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|
313 yield self._j.initiate( |
|
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|
314 client, |
|
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|
315 peer_jid, |
|
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|
316 [ |
|
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|
317 { |
|
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|
318 "app_ns": NS_JINGLE_FT, |
|
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|
319 "senders": self._j.ROLE_INITIATOR, |
|
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|
320 "app_kwargs": { |
|
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|
321 "filepath": filepath, |
|
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|
322 "name": name, |
|
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|
323 "extra": extra, |
|
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|
324 "progress_id_d": progress_id_d, |
|
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|
325 }, |
|
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|
326 } |
|
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|
327 ], |
|
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|
328 ) |
|
2502
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XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
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changeset
|
329 progress_id = yield progress_id_d |
|
7ad5f2c4e34a
XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
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changeset
|
330 defer.returnValue(progress_id) |
|
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331 |
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332 def _fileJingleRequest( |
| 3040 | 333 self, peer_jid, filepath, name="", file_hash="", hash_algo="", extra=None, |
| 334 profile=C.PROF_KEY_NONE): | |
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335 client = self.host.getClient(profile) |
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336 return self.fileJingleRequest( |
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337 client, |
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338 jid.JID(peer_jid), |
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339 filepath, |
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340 name or None, |
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341 file_hash or None, |
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342 hash_algo or None, |
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343 extra or None, |
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344 ) |
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345 |
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346 @defer.inlineCallbacks |
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347 def fileJingleRequest( |
| 3040 | 348 self, client, peer_jid, filepath, name=None, file_hash=None, hash_algo=None, |
| 349 extra=None): | |
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350 """Request a file using jingle file transfer |
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351 |
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352 @param peer_jid(jid.JID): destinee jid |
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353 @param filepath(str): absolute path where the file will be downloaded |
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354 @param name(unicode, None): name of the file |
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355 @param file_hash(unicode, None): hash of the file |
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356 @return (D(unicode)): progress id |
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357 """ |
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358 progress_id_d = defer.Deferred() |
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359 if extra is None: |
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360 extra = {} |
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361 if file_hash is not None: |
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362 if hash_algo is None: |
| 3028 | 363 raise ValueError(_("hash_algo must be set if file_hash is set")) |
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364 extra["file_hash"] = file_hash |
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365 extra["hash_algo"] = hash_algo |
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366 else: |
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367 if hash_algo is not None: |
| 3028 | 368 raise ValueError(_("file_hash must be set if hash_algo is set")) |
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369 yield self._j.initiate( |
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370 client, |
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371 peer_jid, |
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372 [ |
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373 { |
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374 "app_ns": NS_JINGLE_FT, |
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375 "senders": self._j.ROLE_RESPONDER, |
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376 "app_kwargs": { |
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377 "filepath": filepath, |
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378 "name": name, |
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379 "extra": extra, |
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380 "progress_id_d": progress_id_d, |
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381 }, |
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382 } |
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383 ], |
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384 ) |
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385 progress_id = yield progress_id_d |
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386 defer.returnValue(progress_id) |
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387 |
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388 # jingle callbacks |
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389 |
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390 def jingleSessionInit( |
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391 self, client, session, content_name, filepath, name, extra, progress_id_d |
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392 ): |
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393 if extra is None: |
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394 extra = {} |
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395 else: |
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396 if not EXTRA_ALLOWED.issuperset(extra): |
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397 raise ValueError( |
| 3028 | 398 _("only the following keys are allowed in extra: {keys}").format( |
| 399 keys=", ".join(EXTRA_ALLOWED) | |
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400 ) |
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401 ) |
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402 progress_id_d.callback(self.getProgressId(session, content_name)) |
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403 content_data = session["contents"][content_name] |
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404 application_data = content_data["application_data"] |
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405 assert "file_path" not in application_data |
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406 application_data["file_path"] = filepath |
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407 file_data = application_data["file_data"] = {} |
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408 desc_elt = domish.Element((NS_JINGLE_FT, "description")) |
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409 file_elt = desc_elt.addElement("file") |
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410 |
| 3028 | 411 if content_data["senders"] == self._j.ROLE_INITIATOR: |
|
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412 # we send a file |
|
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413 if name is None: |
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414 name = os.path.basename(filepath) |
| 3028 | 415 file_data["date"] = utils.xmpp_date() |
| 416 file_data["desc"] = extra.pop("file_desc", "") | |
| 417 file_data["name"] = name | |
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418 mime_type = mimetypes.guess_type(name, strict=False)[0] |
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419 if mime_type is not None: |
| 3028 | 420 file_data["mime_type"] = mime_type |
| 421 file_data["size"] = os.path.getsize(filepath) | |
| 422 if "namespace" in extra: | |
| 423 file_data["namespace"] = extra["namespace"] | |
| 424 if "path" in extra: | |
| 425 file_data["path"] = extra["path"] | |
| 426 self.buildFileElementFromDict(file_data, file_elt=file_elt, file_hash="") | |
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427 else: |
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428 # we request a file |
| 3028 | 429 file_hash = extra.pop("file_hash", "") |
|
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430 if not name and not file_hash: |
| 3028 | 431 raise ValueError(_("you need to provide at least name or file hash")) |
|
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432 if name: |
| 3028 | 433 file_data["name"] = name |
|
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434 if file_hash: |
| 3028 | 435 file_data["file_hash"] = file_hash |
| 436 file_data["hash_algo"] = extra["hash_algo"] | |
|
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437 else: |
| 3028 | 438 file_data["hash_algo"] = self._hash.getDefaultAlgo() |
| 439 if "namespace" in extra: | |
| 440 file_data["namespace"] = extra["namespace"] | |
| 441 if "path" in extra: | |
| 442 file_data["path"] = extra["path"] | |
|
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443 self.buildFileElementFromDict(file_data, file_elt=file_elt) |
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444 |
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445 return desc_elt |
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446 |
|
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447 def jingleRequestConfirmation(self, client, action, session, content_name, desc_elt): |
|
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448 """This method request confirmation for a jingle session""" |
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449 content_data = session["contents"][content_name] |
| 3028 | 450 senders = content_data["senders"] |
|
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451 if senders not in (self._j.ROLE_INITIATOR, self._j.ROLE_RESPONDER): |
| 3028 | 452 log.warning("Bad sender, assuming initiator") |
| 453 senders = content_data["senders"] = self._j.ROLE_INITIATOR | |
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454 # first we grab file informations |
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455 try: |
| 3028 | 456 file_elt = next(desc_elt.elements(NS_JINGLE_FT, "file")) |
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457 except StopIteration: |
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458 raise failure.Failure(exceptions.DataError) |
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459 file_data = {"progress_id": self.getProgressId(session, content_name)} |
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460 |
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461 if senders == self._j.ROLE_RESPONDER: |
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462 # we send the file |
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463 return self._fileSendingRequestConf( |
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464 client, session, content_data, content_name, file_data, file_elt |
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465 ) |
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466 else: |
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467 # we receive the file |
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468 return self._fileReceivingRequestConf( |
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469 client, session, content_data, content_name, file_data, file_elt |
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470 ) |
|
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471 |
|
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472 @defer.inlineCallbacks |
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473 def _fileSendingRequestConf( |
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474 self, client, session, content_data, content_name, file_data, file_elt |
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475 ): |
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476 """parse file_elt, and handle file retrieving/permission checking""" |
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477 self.parseFileElement(file_elt, file_data) |
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478 content_data["application_data"]["file_data"] = file_data |
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479 finished_d = content_data["finished_d"] = defer.Deferred() |
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|
480 |
|
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481 # confirmed_d is a deferred returning confimed value (only used if cont is False) |
|
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482 cont, confirmed_d = self.host.trigger.returnPoint( |
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483 "XEP-0234_fileSendingRequest", |
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484 client, |
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485 session, |
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486 content_data, |
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487 content_name, |
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488 file_data, |
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489 file_elt, |
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490 ) |
|
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|
491 if not cont: |
|
7ad5f2c4e34a
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|
492 confirmed = yield confirmed_d |
|
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|
493 if confirmed: |
|
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|
494 args = [client, session, content_name, content_data] |
|
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495 finished_d.addCallbacks( |
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496 self._finishedCb, self._finishedEb, args, None, args |
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|
497 ) |
|
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|
498 defer.returnValue(confirmed) |
|
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changeset
|
499 |
| 3028 | 500 log.warning(_("File continue is not implemented yet")) |
|
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changeset
|
501 defer.returnValue(False) |
|
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|
502 |
|
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|
503 def _fileReceivingRequestConf( |
|
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504 self, client, session, content_data, content_name, file_data, file_elt |
|
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505 ): |
|
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parents:
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changeset
|
506 """parse file_elt, and handle user permission/file opening""" |
|
7ad5f2c4e34a
XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
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changeset
|
507 self.parseFileElement(file_elt, file_data, given=True) |
|
7ad5f2c4e34a
XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
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parents:
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changeset
|
508 try: |
|
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|
509 hash_algo, file_data["given_file_hash"] = self._hash.parseHashElt(file_elt) |
|
2502
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parents:
2489
diff
changeset
|
510 except exceptions.NotFound: |
|
1528
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plugin XEP-0234: jingle file transfer first draft
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parents:
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changeset
|
511 try: |
|
2502
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parents:
2489
diff
changeset
|
512 hash_algo = self._hash.parseHashUsedElt(file_elt) |
|
7ad5f2c4e34a
XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents:
2489
diff
changeset
|
513 except exceptions.NotFound: |
|
7ad5f2c4e34a
XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents:
2489
diff
changeset
|
514 raise failure.Failure(exceptions.DataError) |
|
1620
4dd07d026214
plugin XEP-0234: hash checksum proper handling
Goffi <goffi@goffi.org>
parents:
1618
diff
changeset
|
515 |
|
4dd07d026214
plugin XEP-0234: hash checksum proper handling
Goffi <goffi@goffi.org>
parents:
1618
diff
changeset
|
516 if hash_algo is not None: |
|
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|
517 file_data["hash_algo"] = hash_algo |
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|
518 file_data["hash_hasher"] = hasher = self._hash.getHasher(hash_algo) |
|
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changeset
|
519 file_data["data_cb"] = lambda data: hasher.update(data) |
|
1620
4dd07d026214
plugin XEP-0234: hash checksum proper handling
Goffi <goffi@goffi.org>
parents:
1618
diff
changeset
|
520 |
|
4dd07d026214
plugin XEP-0234: hash checksum proper handling
Goffi <goffi@goffi.org>
parents:
1618
diff
changeset
|
521 try: |
|
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changeset
|
522 file_data["size"] = int(file_data["size"]) |
|
1528
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parents:
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changeset
|
523 except ValueError: |
|
1c71d7335d02
plugin XEP-0234: jingle file transfer first draft
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
524 raise failure.Failure(exceptions.DataError) |
|
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plugin XEP-0234: jingle file transfer first draft
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parents:
diff
changeset
|
525 |
|
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|
526 name = file_data["name"] |
|
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changeset
|
527 if "/" in name or "\\" in name: |
|
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changeset
|
528 log.warning( |
| 3028 | 529 "File name contain path characters, we replace them: {}".format(name) |
|
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changeset
|
530 ) |
|
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changeset
|
531 file_data["name"] = name.replace("/", "_").replace("\\", "_") |
|
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parents:
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changeset
|
532 |
|
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changeset
|
533 content_data["application_data"]["file_data"] = file_data |
|
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parents:
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changeset
|
534 |
|
1c71d7335d02
plugin XEP-0234: jingle file transfer first draft
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
535 # now we actualy request permission to user |
|
1574
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plugins XEP-0234, file: moved file request dialog to file plugin
Goffi <goffi@goffi.org>
parents:
1571
diff
changeset
|
536 def gotConfirmation(confirmed): |
|
babd97d80049
plugins XEP-0234, file: moved file request dialog to file plugin
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parents:
1571
diff
changeset
|
537 if confirmed: |
|
2489
e2a7bb875957
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Goffi <goffi@goffi.org>
parents:
2483
diff
changeset
|
538 args = [client, session, content_name, content_data] |
|
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changeset
|
539 finished_d.addCallbacks( |
|
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changeset
|
540 self._finishedCb, self._finishedEb, args, None, args |
|
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diff
changeset
|
541 ) |
|
1574
babd97d80049
plugins XEP-0234, file: moved file request dialog to file plugin
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parents:
1571
diff
changeset
|
542 return confirmed |
|
babd97d80049
plugins XEP-0234, file: moved file request dialog to file plugin
Goffi <goffi@goffi.org>
parents:
1571
diff
changeset
|
543 |
|
2502
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XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
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diff
changeset
|
544 # deferred to track end of transfer |
|
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|
545 finished_d = content_data["finished_d"] = defer.Deferred() |
|
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|
546 d = self._f.getDestDir( |
|
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changeset
|
547 client, session["peer_jid"], content_data, file_data, stream_object=True |
|
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changeset
|
548 ) |
|
1574
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parents:
1571
diff
changeset
|
549 d.addCallback(gotConfirmation) |
|
babd97d80049
plugins XEP-0234, file: moved file request dialog to file plugin
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1571
diff
changeset
|
550 return d |
|
1528
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diff
changeset
|
551 |
| 3040 | 552 @defer.inlineCallbacks |
|
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changeset
|
553 def jingleHandler(self, client, action, session, content_name, desc_elt): |
|
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|
554 content_data = session["contents"][content_name] |
|
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changeset
|
555 application_data = content_data["application_data"] |
|
1556
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1529
diff
changeset
|
556 if action in (self._j.A_ACCEPTED_ACK,): |
|
1528
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Goffi <goffi@goffi.org>
parents:
diff
changeset
|
557 pass |
|
1556
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1529
diff
changeset
|
558 elif action == self._j.A_SESSION_INITIATE: |
| 3028 | 559 file_elt = next(desc_elt.elements(NS_JINGLE_FT, "file")) |
|
1556
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
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|
560 try: |
| 3028 | 561 next(file_elt.elements(NS_JINGLE_FT, "range")) |
|
1556
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
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|
562 except StopIteration: |
|
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
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diff
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|
563 # initiator doesn't manage <range>, but we do so we advertise it |
| 3040 | 564 # FIXME: to be checked |
|
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plugin XEP-0166, XEP-0234, XEP-0261:
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diff
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|
565 log.debug("adding <range> element") |
|
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|
566 file_elt.addElement("range") |
|
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plugin XEP-0234: jingle file transfer first draft
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567 elif action == self._j.A_SESSION_ACCEPT: |
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568 assert not "stream_object" in content_data |
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569 file_data = application_data["file_data"] |
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570 file_path = application_data["file_path"] |
| 3028 | 571 senders = content_data["senders"] |
| 572 if senders != session["role"]: | |
|
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|
573 # we are receiving the file |
|
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|
574 try: |
|
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|
575 # did the responder specified the size of the file? |
| 3028 | 576 file_elt = next(desc_elt.elements(NS_JINGLE_FT, "file")) |
| 577 size_elt = next(file_elt.elements(NS_JINGLE_FT, "size")) | |
| 578 size = int(str(size_elt)) | |
|
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|
579 except (StopIteration, ValueError): |
|
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XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
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|
580 size = None |
| 3040 | 581 # XXX: hash security is not critical here, so we just take the higher |
| 582 # mandatory one | |
|
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583 hasher = file_data["hash_hasher"] = self._hash.getHasher() |
| 3040 | 584 progress_id = self.getProgressId(session, content_name) |
| 585 try: | |
| 586 content_data["stream_object"] = stream.FileStreamObject( | |
| 587 self.host, | |
| 588 client, | |
| 589 file_path, | |
| 590 mode="wb", | |
| 591 uid=progress_id, | |
| 592 size=size, | |
| 593 data_cb=lambda data: hasher.update(data), | |
| 594 ) | |
| 595 except Exception as e: | |
| 596 self.host.bridge.progressError( | |
| 597 progress_id, C.PROGRESS_ERROR_FAILED, client.profile | |
| 598 ) | |
| 599 yield self._j.terminate( | |
| 600 client, self._j.REASON_FAILED_APPLICATION, session) | |
| 601 raise e | |
|
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|
602 else: |
|
7ad5f2c4e34a
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|
603 # we are sending the file |
|
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604 size = file_data["size"] |
| 3040 | 605 # XXX: hash security is not critical here, so we just take the higher |
| 606 # mandatory one | |
|
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607 hasher = file_data["hash_hasher"] = self._hash.getHasher() |
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|
608 content_data["stream_object"] = stream.FileStreamObject( |
|
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|
609 self.host, |
|
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|
610 client, |
|
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|
611 file_path, |
|
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|
612 uid=self.getProgressId(session, content_name), |
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changeset
|
613 size=size, |
|
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|
614 data_cb=lambda data: hasher.update(data), |
|
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615 ) |
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616 finished_d = content_data["finished_d"] = defer.Deferred() |
|
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617 args = [client, session, content_name, content_data] |
|
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|
618 finished_d.addCallbacks(self._finishedCb, self._finishedEb, args, None, args) |
|
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|
619 else: |
| 3028 | 620 log.warning("FIXME: unmanaged action {}".format(action)) |
| 3040 | 621 defer.returnValue(desc_elt) |
|
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|
622 |
|
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|
623 def jingleSessionInfo(self, client, action, session, content_name, jingle_elt): |
|
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|
624 """Called on session-info action |
|
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|
625 |
|
4dd07d026214
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changeset
|
626 manage checksum, and ignore <received/> element |
|
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|
627 """ |
|
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changeset
|
628 # TODO: manage <received/> element |
|
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|
629 content_data = session["contents"][content_name] |
|
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|
630 elts = [elt for elt in jingle_elt.elements() if elt.uri == NS_JINGLE_FT] |
|
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|
631 if not elts: |
|
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|
632 return |
|
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|
633 for elt in elts: |
|
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|
634 if elt.name == "received": |
|
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changeset
|
635 pass |
|
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|
636 elif elt.name == "checksum": |
|
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changeset
|
637 # we have received the file hash, we need to parse it |
|
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|
638 if content_data["senders"] == session["role"]: |
|
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|
639 log.warning( |
| 3028 | 640 "unexpected checksum received while we are the file sender" |
|
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|
641 ) |
|
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|
642 raise exceptions.DataError |
|
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|
643 info_content_name = elt["name"] |
|
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changeset
|
644 if info_content_name != content_name: |
|
4dd07d026214
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changeset
|
645 # it was for an other content... |
|
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|
646 return |
|
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|
647 file_data = content_data["application_data"]["file_data"] |
|
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|
648 try: |
| 3028 | 649 file_elt = next(elt.elements((NS_JINGLE_FT, "file"))) |
|
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|
650 except StopIteration: |
|
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changeset
|
651 raise exceptions.DataError |
|
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|
652 algo, file_data["given_file_hash"] = self._hash.parseHashElt(file_elt) |
|
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|
653 if algo != file_data.get("hash_algo"): |
|
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|
654 log.warning( |
| 3028 | 655 "Hash algorithm used in given hash ({peer_algo}) doesn't correspond to the one we have used ({our_algo}) [{profile}]".format( |
|
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|
656 peer_algo=algo, |
|
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|
657 our_algo=file_data.get("hash_algo"), |
|
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|
658 profile=client.profile, |
|
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|
659 ) |
|
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changeset
|
660 ) |
|
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|
661 else: |
|
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changeset
|
662 self._receiverTryTerminate( |
|
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changeset
|
663 client, session, content_name, content_data |
|
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|
664 ) |
|
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|
665 else: |
|
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|
666 raise NotImplementedError |
|
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changeset
|
667 |
|
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diff
changeset
|
668 def jingleTerminate(self, client, action, session, content_name, jingle_elt): |
|
7ad5f2c4e34a
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changeset
|
669 if jingle_elt.decline: |
|
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changeset
|
670 # progress is the only way to tell to frontends that session has been declined |
|
7ad5f2c4e34a
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changeset
|
671 progress_id = self.getProgressId(session, content_name) |
|
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|
672 self.host.bridge.progressError( |
|
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|
673 progress_id, C.PROGRESS_ERROR_DECLINED, client.profile |
|
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|
674 ) |
| 3040 | 675 elif not jingle_elt.success: |
| 676 progress_id = self.getProgressId(session, content_name) | |
| 677 first_child = jingle_elt.firstChildElement() | |
| 678 if first_child is not None: | |
| 679 reason = first_child.name | |
| 680 else: | |
| 681 reason = C.PROGRESS_ERROR_FAILED | |
| 682 self.host.bridge.progressError( | |
| 683 progress_id, reason, client.profile | |
| 684 ) | |
|
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2489
diff
changeset
|
685 |
|
2489
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changeset
|
686 def _sendCheckSum(self, client, session, content_name, content_data): |
|
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|
687 """Send the session-info with the hash checksum""" |
|
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|
688 file_data = content_data["application_data"]["file_data"] |
|
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|
689 hasher = file_data["hash_hasher"] |
|
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|
690 hash_ = hasher.hexdigest() |
| 3028 | 691 log.debug("Calculated hash: {}".format(hash_)) |
|
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changeset
|
692 iq_elt, jingle_elt = self._j.buildSessionInfo(client, session) |
|
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|
693 checksum_elt = jingle_elt.addElement((NS_JINGLE_FT, "checksum")) |
|
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|
694 checksum_elt["creator"] = content_data["creator"] |
|
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|
695 checksum_elt["name"] = content_name |
|
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|
696 file_elt = checksum_elt.addElement("file") |
|
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|
697 file_elt.addChild(self._hash.buildHashElt(hash_)) |
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698 iq_elt.send() |
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699 |
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700 def _receiverTryTerminate( |
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701 self, client, session, content_name, content_data, last_try=False |
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702 ): |
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703 """Try to terminate the session |
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704 |
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705 This method must only be used by the receiver. |
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706 It check if transfer is finished, and hash available, |
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707 if everything is OK, it check hash and terminate the session |
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708 @param last_try(bool): if True this mean than session must be terminated even given hash is not available |
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709 @return (bool): True if session was terminated |
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710 """ |
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711 if not content_data.get("transfer_finished", False): |
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712 return False |
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713 file_data = content_data["application_data"]["file_data"] |
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714 given_hash = file_data.get("given_file_hash") |
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715 if given_hash is None: |
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716 if last_try: |
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717 log.warning( |
| 3028 | 718 "sender didn't sent hash checksum, we can't check the file [{profile}]".format( |
|
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719 profile=client.profile |
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720 ) |
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721 ) |
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722 self._j.delayedContentTerminate(client, session, content_name) |
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723 content_data["stream_object"].close() |
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724 return True |
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725 return False |
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726 hasher = file_data["hash_hasher"] |
| 3040 | 727 hash_ = hasher.hexdigest() |
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728 |
|
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729 if hash_ == given_hash: |
| 3040 | 730 log.info(f"Hash checked, file was successfully transfered: {hash_}") |
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731 progress_metadata = { |
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732 "hash": hash_, |
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733 "hash_algo": file_data["hash_algo"], |
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734 "hash_verified": C.BOOL_TRUE, |
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735 } |
|
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736 error = None |
|
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737 else: |
| 3028 | 738 log.warning("Hash mismatch, the file was not transfered correctly") |
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739 progress_metadata = None |
| 3028 | 740 error = "Hash mismatch: given={algo}:{given}, calculated={algo}:{our}".format( |
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741 algo=file_data["hash_algo"], given=given_hash, our=hash_ |
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742 ) |
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743 |
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744 self._j.delayedContentTerminate(client, session, content_name) |
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745 content_data["stream_object"].close(progress_metadata, error) |
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746 # we may have the last_try timer still active, so we try to cancel it |
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747 try: |
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748 content_data["last_try_timer"].cancel() |
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749 except (KeyError, internet_error.AlreadyCalled): |
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|
750 pass |
|
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|
751 return True |
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|
752 |
|
2765
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753 def _finishedCb(self, __, client, session, content_name, content_data): |
| 3028 | 754 log.info("File transfer terminated") |
|
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755 if content_data["senders"] != session["role"]: |
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756 # we terminate the session only if we are the receiver, |
|
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|
757 # as recommanded in XEP-0234 §2 (after example 6) |
|
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758 content_data["transfer_finished"] = True |
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759 if not self._receiverTryTerminate( |
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760 client, session, content_name, content_data |
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761 ): |
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762 # we have not received the hash yet, we wait 5 more seconds |
|
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763 content_data["last_try_timer"] = reactor.callLater( |
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|
764 5, |
|
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765 self._receiverTryTerminate, |
|
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|
766 client, |
|
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767 session, |
|
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768 content_name, |
|
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|
769 content_data, |
|
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|
770 last_try=True, |
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|
771 ) |
|
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|
772 else: |
|
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773 # we are the sender, we send the checksum |
|
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|
774 self._sendCheckSum(client, session, content_name, content_data) |
|
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775 content_data["stream_object"].close() |
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|
776 |
|
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|
777 def _finishedEb(self, failure, client, session, content_name, content_data): |
| 3028 | 778 log.warning("Error while streaming file: {}".format(failure)) |
|
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779 content_data["stream_object"].close() |
|
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|
780 self._j.contentTerminate( |
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|
781 client, session, content_name, reason=self._j.REASON_FAILED_TRANSPORT |
|
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782 ) |
|
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|
783 |
|
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|
784 |
| 3028 | 785 @implementer(iwokkel.IDisco) |
|
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|
786 class XEP_0234_handler(XMPPHandler): |
|
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|
787 |
|
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788 def getDiscoInfo(self, requestor, target, nodeIdentifier=""): |
|
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|
789 return [disco.DiscoFeature(NS_JINGLE_FT)] |
|
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|
790 |
|
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|
791 def getDiscoItems(self, requestor, target, nodeIdentifier=""): |
|
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|
792 return [] |