Mercurial > libervia-backend
annotate sat/plugins/plugin_xep_0313.py @ 3368:e86b71b1aa31
core: minor typos, docstring/comments update
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Sun, 20 Sep 2020 14:05:40 +0200 |
| parents | 000b6722bd35 |
| children | c3f07c0cb2de |
| rev | line source |
|---|---|
| 3028 | 1 #!/usr/bin/env python3 |
| 3137 | 2 |
| 1277 | 3 |
| 4 # SAT plugin for Message Archive Management (XEP-0313) | |
| 3136 | 5 # Copyright (C) 2009-2020 Jérôme Poisson (goffi@goffi.org) |
| 1766 | 6 # Copyright (C) 2013-2016 Adrien Cossa (souliane@mailoo.org) |
| 1277 | 7 |
| 8 # This program is free software: you can redistribute it and/or modify | |
| 9 # it under the terms of the GNU Affero General Public License as published by | |
| 10 # the Free Software Foundation, either version 3 of the License, or | |
| 11 # (at your option) any later version. | |
| 12 | |
| 13 # This program is distributed in the hope that it will be useful, | |
| 14 # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 # GNU Affero General Public License for more details. | |
| 17 | |
| 18 # You should have received a copy of the GNU Affero General Public License | |
| 19 # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 20 | |
| 21 from sat.core.constants import Const as C | |
| 22 from sat.core.i18n import _ | |
| 23 from sat.core.log import getLogger | |
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24 from sat.core import exceptions |
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25 from sat.tools.common import data_format |
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26 from twisted.words.protocols.jabber import jid |
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27 from twisted.internet import defer |
| 3028 | 28 from zope.interface import implementer |
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29 from datetime import datetime |
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30 from dateutil import tz |
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31 from wokkel import disco |
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32 from wokkel import data_form |
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33 import uuid |
| 1277 | 34 |
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35 # XXX: mam and rsm come from sat_tmp.wokkel |
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36 from wokkel import rsm |
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37 from wokkel import mam |
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38 |
| 1277 | 39 |
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40 log = getLogger(__name__) |
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41 |
| 1277 | 42 PLUGIN_INFO = { |
| 3028 | 43 C.PI_NAME: "Message Archive Management", |
| 44 C.PI_IMPORT_NAME: "XEP-0313", | |
| 45 C.PI_TYPE: "XEP", | |
| 46 C.PI_PROTOCOLS: ["XEP-0313"], | |
| 47 C.PI_DEPENDENCIES: ["XEP-0059", "XEP-0359"], | |
| 48 C.PI_MAIN: "XEP_0313", | |
| 49 C.PI_HANDLER: "yes", | |
| 50 C.PI_DESCRIPTION: _("""Implementation of Message Archive Management"""), | |
| 1277 | 51 } |
| 52 | |
| 3028 | 53 MAM_PREFIX = "mam_" |
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54 FILTER_PREFIX = MAM_PREFIX + "filter_" |
| 3028 | 55 KEY_LAST_STANZA_ID = "last_stanza_id" |
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56 MESSAGE_RESULT = "/message/result[@xmlns='{mam_ns}' and @queryid='{query_id}']" |
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57 MESSAGE_STANZA_ID = '/message/stanza-id[@xmlns="{ns_stanza_id}"]' |
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58 |
| 1277 | 59 |
| 60 class XEP_0313(object): | |
| 61 def __init__(self, host): | |
| 62 log.info(_("Message Archive Management plugin initialization")) | |
| 63 self.host = host | |
| 3028 | 64 self.host.registerNamespace("mam", mam.NS_MAM) |
| 65 self._rsm = host.plugins["XEP-0059"] | |
| 66 self._sid = host.plugins["XEP-0359"] | |
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67 # Deferred used to store last stanza id in order of reception |
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68 self._last_stanza_id_d = defer.Deferred() |
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69 self._last_stanza_id_d.callback(None) |
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70 host.bridge.addMethod( |
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71 "MAMGet", ".plugin", in_sign='sss', |
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72 out_sign='(a(sdssa{ss}a{ss}ss)ss)', method=self._getArchives, |
| 3028 | 73 async_=True) |
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74 |
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75 @defer.inlineCallbacks |
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76 def resume(self, client): |
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77 """Retrieve one2one messages received since the last we have in local storage""" |
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78 stanza_id_data = yield self.host.memory.storage.getPrivates( |
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79 mam.NS_MAM, [KEY_LAST_STANZA_ID], profile=client.profile) |
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80 stanza_id = stanza_id_data.get(KEY_LAST_STANZA_ID) |
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81 if stanza_id is None: |
| 3028 | 82 log.info("can't retrieve last stanza ID, checking history") |
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83 last_mess = yield self.host.memory.historyGet( |
| 3028 | 84 None, None, limit=1, filters={'not_types': C.MESS_TYPE_GROUPCHAT, |
| 85 'last_stanza_id': True}, | |
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86 profile=client.profile) |
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87 if not last_mess: |
| 3028 | 88 log.info(_("It seems that we have no MAM history yet")) |
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89 stanza_id = None |
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90 # FIXME: we should restrict starting of the archive, as it can be huge |
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91 else: |
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92 stanza_id = last_mess[0][-1]['stanza_id'] |
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93 rsm_req = rsm.RSMRequest(max_=100, after=stanza_id) |
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94 mam_req = mam.MAMRequest(rsm_=rsm_req) |
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95 complete = False |
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96 count = 0 |
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97 while not complete: |
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98 mam_data = yield self.getArchives(client, mam_req, |
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99 service=client.jid.userhostJID()) |
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100 elt_list, rsm_response, mam_response = mam_data |
| 3028 | 101 complete = mam_response["complete"] |
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102 # we update MAM request for next iteration |
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103 mam_req.rsm.after = rsm_response.last |
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104 if not elt_list: |
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105 break |
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106 else: |
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107 count += len(elt_list) |
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108 |
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109 for mess_elt in elt_list: |
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110 try: |
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111 fwd_message_elt = self.getMessageFromResult( |
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112 client, mess_elt, mam_req) |
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113 except exceptions.DataError: |
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114 continue |
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115 |
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116 try: |
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117 destinee = jid.JID(fwd_message_elt['to']) |
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118 except KeyError: |
| 3028 | 119 log.warning(_('missing "to" attribute in forwarded message')) |
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120 destinee = client.jid |
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121 if destinee.userhostJID() == client.jid.userhostJID(): |
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122 # message to use, we insert the forwarded message in the normal |
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123 # workflow |
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124 client.xmlstream.dispatch(fwd_message_elt) |
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125 else: |
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126 # this message should be from us, we just add it to history |
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127 try: |
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128 from_jid = jid.JID(fwd_message_elt['from']) |
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129 except KeyError: |
| 3028 | 130 log.warning(_('missing "from" attribute in forwarded message')) |
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131 from_jid = client.jid |
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132 if from_jid.userhostJID() != client.jid.userhostJID(): |
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133 log.warning(_( |
| 3028 | 134 'was expecting a message sent by our jid, but this one if ' |
| 135 'from {from_jid}, ignoring\n{xml}').format( | |
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136 from_jid=from_jid.full(), xml=mess_elt.toXml())) |
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137 continue |
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138 # adding message to history |
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139 mess_data = client.messageProt.parseMessage(fwd_message_elt) |
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140 try: |
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141 yield client.messageProt.addToHistory(mess_data) |
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142 except exceptions.CancelError as e: |
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143 log.warning( |
| 3028 | 144 "message has not been added to history: {e}".format(e=e)) |
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145 except Exception as e: |
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146 log.error( |
| 3028 | 147 "can't add message to history: {e}\n{xml}" |
|
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148 .format(e=e, xml=mess_elt.toXml())) |
|
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149 |
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150 if not count: |
| 3028 | 151 log.info(_("We have received no message while offline")) |
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152 else: |
| 3028 | 153 log.info(_("We have received {num_mess} message(s) while offline.") |
|
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154 .format(num_mess=count)) |
| 1277 | 155 |
|
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156 def profileConnected(self, client): |
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157 return self.resume(client) |
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158 |
|
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159 def getHandler(self, client): |
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160 mam_client = client._mam = SatMAMClient(self) |
|
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161 return mam_client |
| 1277 | 162 |
|
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163 def parseExtra(self, extra, with_rsm=True): |
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164 """Parse extra dictionnary to retrieve MAM arguments |
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165 |
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166 @param extra(dict): data for parse |
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167 @param with_rsm(bool): if True, RSM data will be parsed too |
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168 @return (data_form, None): request with parsed arguments |
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169 or None if no MAM arguments have been found |
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170 """ |
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171 mam_args = {} |
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172 form_args = {} |
| 3028 | 173 for arg in ("start", "end"): |
|
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174 try: |
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175 value = extra.pop(MAM_PREFIX + arg) |
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176 form_args[arg] = datetime.fromtimestamp(float(value), tz.tzutc()) |
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177 except (TypeError, ValueError): |
| 3028 | 178 log.warning("Bad value for {arg} filter ({value}), ignoring".format( |
|
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179 arg=arg, value=value)) |
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180 except KeyError: |
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181 continue |
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182 |
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183 try: |
| 3028 | 184 form_args["with_jid"] = jid.JID(extra.pop( |
| 185 MAM_PREFIX + "with")) | |
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186 except (jid.InvalidFormat): |
| 3028 | 187 log.warning("Bad value for jid filter") |
|
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188 except KeyError: |
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189 pass |
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190 |
| 3028 | 191 for name, value in extra.items(): |
|
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192 if name.startswith(FILTER_PREFIX): |
| 2763 | 193 var = name[len(FILTER_PREFIX):] |
| 3028 | 194 extra_fields = form_args.setdefault("extra_fields", []) |
|
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195 extra_fields.append(data_form.Field(var=var, value=value)) |
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196 |
| 3028 | 197 for arg in ("node", "query_id"): |
|
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198 try: |
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199 value = extra.pop(MAM_PREFIX + arg) |
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200 mam_args[arg] = value |
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201 except KeyError: |
|
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202 continue |
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203 |
|
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204 if with_rsm: |
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205 rsm_request = self._rsm.parseExtra(extra) |
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206 if rsm_request is not None: |
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|
207 mam_args["rsm_"] = rsm_request |
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208 |
|
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209 if form_args: |
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210 mam_args["form"] = mam.buildForm(**form_args) |
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211 |
|
2760
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212 # we only set orderBy if we have other MAM args |
|
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213 # else we would make a MAM query while it's not expected |
| 3028 | 214 if "order_by" in extra and mam_args: |
| 215 order_by = extra.pop("order_by") | |
|
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|
216 assert isinstance(order_by, list) |
|
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|
217 mam_args["orderBy"] = order_by |
|
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|
218 |
|
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219 return mam.MAMRequest(**mam_args) if mam_args else None |
|
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220 |
|
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221 def getMessageFromResult(self, client, mess_elt, mam_req, service=None): |
|
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222 """Extract usable <message/> from MAM query result |
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223 |
|
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224 The message will be validated, and stanza-id/delay will be added if necessary. |
|
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225 @param mess_elt(domish.Element): result <message/> element wrapping the message |
|
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|
226 to retrieve |
|
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|
227 @param mam_req(mam.MAMRequest): request used (needed to get query_id) |
|
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228 @param service(jid.JID, None): MAM service where the request has been sent |
|
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|
229 None if it's user server |
|
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|
230 @return domish.Element): <message/> that can be used directly with onMessage |
|
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|
231 """ |
| 3028 | 232 if mess_elt.name != "message": |
| 233 log.warning("unexpected stanza in archive: {xml}".format( | |
|
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|
234 xml=mess_elt.toXml())) |
| 3028 | 235 raise exceptions.DataError("Invalid element") |
|
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|
236 service_jid = client.jid.userhostJID() if service is None else service |
| 3028 | 237 mess_from = mess_elt["from"] |
|
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|
238 # we check that the message has been sent by the right service |
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|
239 # if service is None (i.e. message expected from our own server) |
|
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|
240 # from can be server jid or user's bare jid |
|
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|
241 if (mess_from != service_jid.full() |
|
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|
242 and not (service is None and mess_from == client.jid.host)): |
| 3028 | 243 log.error("Message is not from our server, something went wrong: " |
| 244 "{xml}".format(xml=mess_elt.toXml())) | |
| 245 raise exceptions.DataError("Invalid element") | |
|
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|
246 try: |
| 3028 | 247 result_elt = next(mess_elt.elements(mam.NS_MAM, "result")) |
| 248 forwarded_elt = next(result_elt.elements(C.NS_FORWARD, "forwarded")) | |
|
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|
249 try: |
| 3028 | 250 delay_elt = next(forwarded_elt.elements(C.NS_DELAY, "delay")) |
|
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|
251 except StopIteration: |
|
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|
252 # delay_elt is not mandatory |
|
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|
253 delay_elt = None |
| 3028 | 254 fwd_message_elt = next(forwarded_elt.elements(C.NS_CLIENT, "message")) |
|
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|
255 except StopIteration: |
| 3028 | 256 log.warning("Invalid message received from MAM: {xml}".format( |
|
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|
257 xml=mess_elt.toXml())) |
| 3028 | 258 raise exceptions.DataError("Invalid element") |
|
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|
259 else: |
| 3028 | 260 if not result_elt["queryid"] == mam_req.query_id: |
| 261 log.error("Unexpected query id (was expecting {query_id}): {xml}" | |
|
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|
262 .format(query_id=mam.query_id, xml=mess_elt.toXml())) |
| 3028 | 263 raise exceptions.DataError("Invalid element") |
|
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changeset
|
264 stanza_id = self._sid.getStanzaId(fwd_message_elt, |
|
2713
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diff
changeset
|
265 service_jid) |
|
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|
266 if stanza_id is None: |
|
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|
267 # not stanza-id element is present, we add one so message |
|
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|
268 # will be archived with it, and we won't request several times |
|
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|
269 # the same MAM achive |
|
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changeset
|
270 try: |
| 3028 | 271 stanza_id = result_elt["id"] |
|
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changeset
|
272 except AttributeError: |
| 3028 | 273 log.warning('Invalid MAM result: missing "id" attribute: {xml}' |
|
2701
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diff
changeset
|
274 .format(xml=result_elt.toXml())) |
| 3028 | 275 raise exceptions.DataError("Invalid element") |
|
2713
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2701
diff
changeset
|
276 self._sid.addStanzaId(client, fwd_message_elt, stanza_id, by=service_jid) |
|
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277 |
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278 if delay_elt is not None: |
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279 fwd_message_elt.addChild(delay_elt) |
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280 |
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281 return fwd_message_elt |
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282 |
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283 def queryFields(self, client, service=None): |
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284 """Ask the server about supported fields. |
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285 |
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286 @param service: entity offering the MAM service (None for user archives) |
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287 @return (D(data_form.Form)): form with the implemented fields (cf XEP-0313 §4.1.5) |
| 1277 | 288 """ |
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289 return client._mam.queryFields(service) |
| 1277 | 290 |
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291 def queryArchive(self, client, mam_req, service=None): |
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292 """Query a user, MUC or pubsub archive. |
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293 |
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294 @param mam_req(mam.MAMRequest): MAM query instance |
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295 @param service(jid.JID, None): entity offering the MAM service |
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296 None for user server |
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297 @return (D(domish.Element)): <IQ/> result |
| 1277 | 298 """ |
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299 return client._mam.queryArchive(mam_req, service) |
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300 |
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301 def _appendMessage(self, elt_list, message_cb, message_elt): |
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302 if message_cb is not None: |
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303 elt_list.append(message_cb(message_elt)) |
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304 else: |
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305 elt_list.append(message_elt) |
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306 |
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307 def _queryFinished(self, iq_result, client, elt_list, event): |
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308 client.xmlstream.removeObserver(event, self._appendMessage) |
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309 try: |
| 3028 | 310 fin_elt = next(iq_result.elements(mam.NS_MAM, "fin")) |
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311 except StopIteration: |
| 3028 | 312 raise exceptions.DataError("Invalid MAM result") |
| 1277 | 313 |
| 3028 | 314 mam_response = {"complete": C.bool(fin_elt.getAttribute("complete", C.BOOL_FALSE)), |
| 315 "stable": C.bool(fin_elt.getAttribute("stable", C.BOOL_TRUE))} | |
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316 |
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317 try: |
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318 rsm_response = rsm.RSMResponse.fromElement(fin_elt) |
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319 except rsm.RSMNotFoundError: |
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320 rsm_response = None |
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321 |
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322 return (elt_list, rsm_response, mam_response) |
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323 |
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324 def serializeArchiveResult(self, data, client, mam_req, service): |
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325 elt_list, rsm_response, mam_response = data |
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326 mess_list = [] |
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327 for elt in elt_list: |
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328 fwd_message_elt = self.getMessageFromResult(client, elt, mam_req, |
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329 service=service) |
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330 mess_data = client.messageProt.parseMessage(fwd_message_elt) |
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331 mess_list.append(client.messageGetBridgeArgs(mess_data)) |
|
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332 metadata = { |
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333 'rsm': self._rsm.response2dict(rsm_response), |
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334 'mam': mam_response |
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335 } |
|
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336 return mess_list, data_format.serialise(metadata), client.profile |
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337 |
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338 def _getArchives(self, service, extra_ser, profile_key): |
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339 """ |
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340 @return: tuple with: |
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341 - list of message with same data as in bridge.messageNew |
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342 - response metadata with: |
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343 - rsm data (first, last, count, index) |
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344 - mam data (complete, stable) |
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345 - profile |
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346 """ |
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347 client = self.host.getClient(profile_key) |
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348 service = jid.JID(service) if service else None |
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349 extra = data_format.deserialise(extra_ser, {}) |
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350 mam_req = self.parseExtra(extra) |
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351 |
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352 d = self.getArchives(client, mam_req, service=service) |
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353 d.addCallback(self.serializeArchiveResult, client, mam_req, service) |
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354 return d |
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355 |
|
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356 def getArchives(self, client, query, service=None, message_cb=None): |
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357 """Query archive and gather page result |
| 1277 | 358 |
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359 @param query(mam.MAMRequest): MAM request |
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360 @param service(jid.JID, None): MAM service to use |
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361 None to use our own server |
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362 @param message_cb(callable, None): callback to use on each message |
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363 this method can be used to unwrap messages |
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364 @return (tuple[list[domish.Element], rsm.RSMResponse, dict): result data with: |
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365 - list of found elements |
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366 - RSM response |
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367 - MAM response, which is a dict with following value: |
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368 - complete: a boolean which is True if all items have been received |
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369 - stable: a boolean which is False if items order may be changed |
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370 """ |
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371 if query.query_id is None: |
| 3028 | 372 query.query_id = str(uuid.uuid4()) |
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373 elt_list = [] |
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374 event = MESSAGE_RESULT.format(mam_ns=mam.NS_MAM, query_id=query.query_id) |
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375 client.xmlstream.addObserver(event, self._appendMessage, 0, elt_list, message_cb) |
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376 d = self.queryArchive(client, query, service) |
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377 d.addCallback(self._queryFinished, client, elt_list, event) |
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378 return d |
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379 |
|
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380 def getPrefs(self, client, service=None): |
| 1277 | 381 """Retrieve the current user preferences. |
| 382 | |
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383 @param service: entity offering the MAM service (None for user archives) |
| 1277 | 384 @return: the server response as a Deferred domish.Element |
| 385 """ | |
| 386 # http://xmpp.org/extensions/xep-0313.html#prefs | |
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387 return client._mam.queryPrefs(service) |
| 1277 | 388 |
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389 def _setPrefs(self, service_s=None, default="roster", always=None, never=None, |
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390 profile_key=C.PROF_KEY_NONE): |
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391 service = jid.JID(service_s) if service_s else None |
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392 always_jid = [jid.JID(entity) for entity in always] |
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393 never_jid = [jid.JID(entity) for entity in never] |
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394 # TODO: why not build here a MAMPrefs object instead of passing the args separately? |
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395 return self.setPrefs(service, default, always_jid, never_jid, profile_key) |
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396 |
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397 def setPrefs(self, client, service=None, default="roster", always=None, never=None): |
| 1277 | 398 """Set news user preferences. |
| 399 | |
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400 @param service: entity offering the MAM service (None for user archives) |
| 1277 | 401 @param default (unicode): a value in ('always', 'never', 'roster') |
| 402 @param always (list): a list of JID instances | |
| 403 @param never (list): a list of JID instances | |
| 404 @param profile_key (unicode): %(doc_profile_key)s | |
| 405 @return: the server response as a Deferred domish.Element | |
| 406 """ | |
| 407 # http://xmpp.org/extensions/xep-0313.html#prefs | |
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408 return client._mam.setPrefs(service, default, always, never) |
| 1277 | 409 |
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410 def onMessageStanzaId(self, message_elt, client): |
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411 """Called when a message with a stanza-id is received |
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412 |
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413 the messages' stanza ids are stored when received, so the last one can be used |
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414 to retrieve missing history on next connection |
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415 @param message_elt(domish.Element): <message> with a stanza-id |
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416 """ |
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417 service_jid = client.jid.userhostJID() |
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418 stanza_id = self._sid.getStanzaId(message_elt, service_jid) |
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419 if stanza_id is None: |
| 3028 | 420 log.debug("Ignoring <message>, stanza id is not from our server") |
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421 else: |
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422 # we use self._last_stanza_id_d do be sure that last_stanza_id is stored in |
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423 # the order of reception |
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424 self._last_stanza_id_d.addCallback( |
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425 lambda __: self.host.memory.storage.setPrivateValue( |
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426 namespace=mam.NS_MAM, |
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427 key=KEY_LAST_STANZA_ID, |
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428 value=stanza_id, |
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429 profile=client.profile)) |
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430 |
| 1277 | 431 |
| 3028 | 432 @implementer(disco.IDisco) |
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433 class SatMAMClient(mam.MAMClient): |
| 1277 | 434 |
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435 def __init__(self, plugin_parent): |
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436 self.plugin_parent = plugin_parent |
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437 |
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438 @property |
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439 def host(self): |
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440 return self.parent.host_app |
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441 |
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442 def connectionInitialized(self): |
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443 observer_xpath = MESSAGE_STANZA_ID.format( |
| 3028 | 444 ns_stanza_id=self.host.ns_map['stanza_id']) |
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445 self.xmlstream.addObserver( |
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446 observer_xpath, self.plugin_parent.onMessageStanzaId, client=self.parent |
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447 ) |
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448 |
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449 def getDiscoInfo(self, requestor, target, nodeIdentifier=""): |
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450 return [disco.DiscoFeature(mam.NS_MAM)] |
| 1277 | 451 |
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452 def getDiscoItems(self, requestor, target, nodeIdentifier=""): |
| 1277 | 453 return [] |