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annotate sat/plugins/plugin_xep_0231.py @ 2617:81b70eeb710f

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quick_frontend(contact list): refactored update: update is now called with appropriate constant value (C.UPDATE_ADD, C.UPDATE_DELETE, C.UPDATE_MODIFY and so on) when a widget change visibility according to current options. Before it was linked to cache only (C.UPDATE_ADD was only called when contact was first added to cache). This make widget handling in frontends more easy. Renamed entityToShow to entityVisible, which seems to correspond better. Started reducing lines lenght to 90 chars as a test. May become the new coding style soon.
author Goffi <goffi@goffi.org>
date Sun, 24 Jun 2018 21:59:29 +0200
parents 26edcf3a30eb
children 56f94936df1e
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2110
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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 Bit of Binary handling (XEP-0231)
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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 import exceptions
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23 from sat.core.log import getLogger
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24 log = getLogger(__name__)
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25 from sat.tools import xml_tools
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26 from wokkel import disco, iwokkel
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27 from zope.interface import implements
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28 from twisted.python import failure
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29 from twisted.words.protocols.jabber import xmlstream
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30 from twisted.words.protocols.jabber import jid
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31 from twisted.words.protocols.jabber import error as jabber_error
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32 from twisted.internet import defer
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33 from functools import partial
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34 import base64
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35 import time
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38 PLUGIN_INFO = {
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39 C.PI_NAME: "Bits of Binary",
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40 C.PI_IMPORT_NAME: "XEP-0231",
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41 C.PI_TYPE: "XEP",
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42 C.PI_MODES: C.PLUG_MODE_BOTH,
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43 C.PI_PROTOCOLS: ["XEP-0231"],
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44 C.PI_MAIN: "XEP_0231",
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45 C.PI_HANDLER: "yes",
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46 C.PI_DESCRIPTION: _("""Implementation of bits of binary (used for small images/files)""")
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47 }
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48
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49 NS_BOB = u'urn:xmpp:bob'
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50 IQ_BOB_REQUEST = C.IQ_GET + '/data[@xmlns="' + NS_BOB + '"]'
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52
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53 class XEP_0231(object):
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54
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55 def __init__(self, host):
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56 log.info(_(u"plugin Bits of Binary initialization"))
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57 self.host = host
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58 host.registerNamespace('bob', NS_BOB)
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59 host.trigger.add("xhtml_post_treat", self.XHTMLTrigger)
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60 host.bridge.addMethod("bobGetFile", ".plugin",
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61 in_sign='sss', out_sign='s',
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62 method=self._getFile,
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63 async=True)
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64
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65 def dumpData(self, cache, data_elt, cid):
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66 """save file encoded in data_elt to cache
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67
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68 @param cache(memory.cache.Cache): cache to use to store the data
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69 @param data_elt(domish.Element): <data> as in XEP-0231
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70 @param cid(unicode): content-id
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71 @return(unicode): full path to dumped file
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72 """
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73 # FIXME: is it needed to use a separate thread?
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74 # probably not with the little data expected with BoB
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75 try:
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76 max_age = int(data_elt['max-age'])
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77 if max_age < 0:
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78 raise ValueError
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79 except (KeyError, ValueError):
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80 log.warning(u'invalid max-age found')
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81 max_age = None
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82
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83 with cache.cacheData(
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84 PLUGIN_INFO[C.PI_IMPORT_NAME],
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85 cid,
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86 data_elt.getAttribute('type'),
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87 max_age) as f:
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88
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89 file_path = f.name
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90 f.write(base64.b64decode(str(data_elt)))
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91
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92 return file_path
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93
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94 def getHandler(self, client):
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95 return XEP_0231_handler(self)
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96
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97 def _requestCb(self, iq_elt, cache, cid):
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98 for data_elt in iq_elt.elements(NS_BOB, u'data'):
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99 if data_elt.getAttribute('cid') == cid:
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100 file_path = self.dumpData(cache, data_elt, cid)
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101 return file_path
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102
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103 log.warning(u"invalid data stanza received, requested cid was not found:\n{iq_elt}\nrequested cid: {cid}".format(
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104 iq_elt = iq_elt,
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105 cid = cid
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106 ))
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107 raise failure.Failure(exceptions.DataError("missing data"))
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108
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109 def _requestEb(self, failure_):
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110 """Log the error and continue errback chain"""
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111 log.warning(u"Can't get requested data:\n{reason}".format(reason=failure_))
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112 return failure_
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114 def requestData(self, client, to_jid, cid, cache=None):
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115 """Request data if we don't have it in cache
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116
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117 @param to_jid(jid.JID): jid to request the data to
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118 @param cid(unicode): content id
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119 @param cache(memory.cache.Cache, None): cache to use
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120 client.cache will be used if None
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121 @return D(unicode): path to file with data
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122 """
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Goffi <goffi@goffi.org>
parents: 2483
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123 if cache is None:
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Goffi <goffi@goffi.org>
parents: 2483
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124 cache = client.cache
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Goffi <goffi@goffi.org>
parents: 2483
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125 iq_elt = client.IQ('get')
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Goffi <goffi@goffi.org>
parents: 2483
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126 iq_elt['to'] = to_jid.full()
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Goffi <goffi@goffi.org>
parents: 2483
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127 data_elt = iq_elt.addElement((NS_BOB, 'data'))
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Goffi <goffi@goffi.org>
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128 data_elt['cid'] = cid
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129 d = iq_elt.send()
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Goffi <goffi@goffi.org>
parents: 2483
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130 d.addCallback(self._requestCb, cache, cid)
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Goffi <goffi@goffi.org>
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131 d.addErrback(self._requestEb)
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132 return d
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133
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Goffi <goffi@goffi.org>
parents: 2483
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134 def _setImgEltSrc(self, path, img_elt):
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Goffi <goffi@goffi.org>
parents: 2483
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135 img_elt[u'src'] = u'file://{}'.format(path)
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136
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137 def XHTMLTrigger(self, client, message_elt, body_elt, lang, treat_d):
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parents:
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138 for img_elt in xml_tools.findAll(body_elt, C.NS_XHTML, u'img'):
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parents:
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139 source = img_elt.getAttribute(u'src','')
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parents:
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140 if source.startswith(u'cid:'):
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141 cid = source[4:]
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142 file_path = client.cache.getFilePath(cid)
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parents:
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143 if file_path is not None:
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144 # image is in cache, we change the url
2110
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145 img_elt[u'src'] = u'file://{}'.format(file_path)
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parents:
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146 continue
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Goffi <goffi@goffi.org>
parents:
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147 else:
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parents:
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148 # image is not in cache, is it given locally?
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parents:
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149 for data_elt in message_elt.elements(NS_BOB, u'data'):
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parents:
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150 if data_elt.getAttribute('cid') == cid:
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parents: 2483
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151 file_path = self.dumpData(client.cache, data_elt, cid)
2110
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parents:
diff changeset
152 img_elt[u'src'] = u'file://{}'.format(file_path)
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parents:
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153 break
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Goffi <goffi@goffi.org>
parents:
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154 else:
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Goffi <goffi@goffi.org>
parents:
diff changeset
155 # cid not found locally, we need to request it
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parents:
diff changeset
156 # so we use the deferred
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
157 d = self.requestData(client, jid.JID(message_elt['from']), cid)
20a5e7db0609 plugin XEP-0231: separated the requestData code in a method which can called independantly + some minor improvments
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
158 d.addCallback(partial(self._setImgEltSrc, img_elt=img_elt))
2110
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parents:
diff changeset
159 treat_d.addCallback(lambda dummy: d)
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parents:
diff changeset
160
2522
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parents: 2511
diff changeset
161 def onComponentRequest(self, iq_elt, client):
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
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162 """cache data is retrieve from common cache for components"""
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parents: 2511
diff changeset
163 # FIXME: this is a security/privacy issue as no access check is done
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Goffi <goffi@goffi.org>
parents: 2511
diff changeset
164 # but this is mitigated by the fact that the cid must be known.
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
165 # An access check should be implemented though.
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
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parents: 2511
diff changeset
166
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
167 iq_elt.handled = True
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
168 data_elt = next(iq_elt.elements(NS_BOB, 'data'))
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Goffi <goffi@goffi.org>
parents: 2511
diff changeset
169 try:
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
170 cid = data_elt[u'cid']
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
171 except KeyError:
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
172 error_elt = jabber_error.StanzaError('not-acceptable').toResponse(iq_elt)
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
173 client.send(error_elt)
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Goffi <goffi@goffi.org>
parents: 2511
diff changeset
174 return
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
175
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
176 metadata = self.host.common_cache.getMetadata(cid)
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
177 if metadata is None:
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
178 error_elt = jabber_error.StanzaError('item-not-found').toResponse(iq_elt)
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
179 client.send(error_elt)
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Goffi <goffi@goffi.org>
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diff changeset
180 return
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
181
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
182 with open(metadata['path']) as f:
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
183 data = f.read()
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Goffi <goffi@goffi.org>
parents: 2511
diff changeset
184
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
185 result_elt = xmlstream.toResponse(iq_elt, 'result')
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
186 data_elt = result_elt.addElement((NS_BOB, 'data'), content = data.encode('base64'))
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
187 data_elt[u'cid'] = cid
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
188 data_elt[u'type'] = metadata[u'mime_type']
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
189 data_elt[u'max-age'] = unicode(int(max(0, metadata['eol'] - time.time())))
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
190 client.send(result_elt)
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
191
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
192 def _getFile(self, peer_jid_s, cid, profile):
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
193 peer_jid = jid.JID(peer_jid_s)
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Goffi <goffi@goffi.org>
parents: 2511
diff changeset
194 assert cid
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
195 client = self.host.getClient(profile)
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
196 return self.getFile(client, peer_jid, cid)
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Goffi <goffi@goffi.org>
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diff changeset
197
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
198 def getFile(self, client, peer_jid, cid, parent_elt=None):
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
199 """Retrieve a file from it's content-id
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Goffi <goffi@goffi.org>
parents: 2511
diff changeset
200
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
201 @param peer_jid(jid.JID): jid of the entity offering the data
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Goffi <goffi@goffi.org>
parents: 2511
diff changeset
202 @param cid(unicode): content-id of file data
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Goffi <goffi@goffi.org>
parents: 2511
diff changeset
203 @param parent_elt(domish.Element, None): if file is not in cache,
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
204 data will be looked after in children of this elements.
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
205 None to ignore
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
206 @return D(unicode): path to cached data
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
207 """
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
208 file_path = client.cache.getFilePath(cid)
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
209 if file_path is not None:
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
210 # file is in cache
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
211 return defer.succeed(file_path)
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
212 else:
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
213 # file not in cache, is it given locally?
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
214 if parent_elt is not None:
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
215 for data_elt in parent_elt.elements(NS_BOB, u'data'):
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
216 if data_elt.getAttribute('cid') == cid:
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
217 return defer.succeed(self.dumpData(client.cache, data_elt, cid))
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
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diff changeset
218
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
219 # cid not found locally, we need to request it
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
220 # so we use the deferred
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
221 return self.requestData(client, peer_jid, cid)
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
222
2110
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parents:
diff changeset
223
2511
20a5e7db0609 plugin XEP-0231: separated the requestData code in a method which can called independantly + some minor improvments
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
224 class XEP_0231_handler(xmlstream.XMPPHandler):
2110
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parents:
diff changeset
225 implements(iwokkel.IDisco)
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parents:
diff changeset
226
2522
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
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diff changeset
227 def __init__(self, plugin_parent):
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
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diff changeset
228 self.plugin_parent = plugin_parent
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
229 self.host = plugin_parent.host
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
230
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
231 def connectionInitialized(self):
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
232 if self.parent.is_component:
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
233 self.xmlstream.addObserver(IQ_BOB_REQUEST, self.plugin_parent.onComponentRequest, client=self.parent)
95c31756944c component file sharing, plugin XEP-0231: thumbnail are now returned by component using Bits of Binary:
Goffi <goffi@goffi.org>
parents: 2511
diff changeset
234
2110
2d633b3c923d plugin XEP-0231: Bits of Binary first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
235 def getDiscoInfo(self, requestor, target, nodeIdentifier=''):
2d633b3c923d plugin XEP-0231: Bits of Binary first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
236 return [disco.DiscoFeature(NS_BOB)]
2d633b3c923d plugin XEP-0231: Bits of Binary first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
237
2d633b3c923d plugin XEP-0231: Bits of Binary first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
238 def getDiscoItems(self, requestor, target, nodeIdentifier=''):
2d633b3c923d plugin XEP-0231: Bits of Binary first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
239 return []