Mercurial > libervia-pubsub
annotate sat_pubsub/mam.py @ 437:454f61a32427
backend: fixed item retractation notification
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Mon, 08 Feb 2021 19:01:29 +0100 |
| parents | 5e8b8ef5c862 |
| children | 91da42d44ea2 |
| rev | line source |
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| 414 | 1 #!/usr/bin/env python3 |
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2 #-*- coding: utf-8 -*- |
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3 |
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4 # Copyright (c) 2016 Jérôme Poisson |
| 311 | 5 # Copyright (c) 2015-2016 Adrien Cossa |
| 6 # | |
| 7 # This program is free software: you can redistribute it and/or modify | |
| 8 # it under the terms of the GNU Affero General Public License as published by | |
| 9 # the Free Software Foundation, either version 3 of the License, or | |
| 10 # (at your option) any later version. | |
| 11 # | |
| 12 # This program is distributed in the hope that it will be useful, | |
| 13 # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 # GNU Affero General Public License for more details. | |
| 16 # | |
| 17 # You should have received a copy of the GNU Affero General Public License | |
| 18 # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 | |
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20 """ |
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21 XMPP Message Archive Management protocol. |
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22 |
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23 This protocol is specified in |
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24 U{XEP-0313<http://xmpp.org/extensions/xep-0313.html>}. |
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25 """ |
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26 |
| 311 | 27 |
| 414 | 28 from zope.interface import implementer |
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29 |
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30 from twisted.words.xish import domish |
| 322 | 31 from twisted.python import log |
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32 from twisted.internet import defer |
| 322 | 33 from twisted.words.protocols.jabber import error |
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34 |
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35 from sat_pubsub import const |
| 322 | 36 from sat_pubsub import backend |
| 37 from wokkel import pubsub | |
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38 |
| 322 | 39 from wokkel import rsm |
| 40 from wokkel import mam | |
| 41 from wokkel import delay | |
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42 |
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43 |
| 414 | 44 @implementer(mam.IMAMResource) |
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45 class MAMResource(object): |
| 322 | 46 _errorMap = backend.PubSubResourceFromBackend._errorMap |
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47 |
| 322 | 48 def __init__(self, backend_): |
| 49 self.backend = backend_ | |
| 50 | |
| 51 def _mapErrors(self, failure): | |
| 52 # XXX: come from backend.PubsubResourceFromBackend | |
| 414 | 53 e = failure.trap(*list(self._errorMap.keys())) |
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54 |
| 322 | 55 condition, pubsubCondition, feature = self._errorMap[e] |
| 56 msg = failure.value.msg | |
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57 |
| 322 | 58 if pubsubCondition: |
| 59 exc = pubsub.PubSubError(condition, pubsubCondition, feature, msg) | |
| 60 else: | |
| 61 exc = error.StanzaError(condition, text=msg) | |
| 62 | |
| 63 raise exc | |
| 64 | |
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65 def onArchiveRequest(self, mam_request): |
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66 """ |
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67 |
| 322 | 68 @param mam_request: The MAM archive request. |
| 69 @type mam_request: L{MAMQueryReques<wokkel.mam.MAMRequest>} | |
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70 |
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71 @return: A tuple with list of message data (id, element, data) and RSM element |
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72 @rtype: C{tuple} |
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73 """ |
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74 # FIXME: bad result ordering |
| 322 | 75 try: |
| 76 pep = mam_request.delegated | |
| 77 except AttributeError: | |
| 78 pep = False | |
| 79 ext_data = {'pep': pep} | |
| 80 if mam_request.form: | |
| 414 | 81 ext_data['filters'] = list(mam_request.form.fields.values()) |
| 322 | 82 if mam_request.rsm is None: |
| 83 if const.VAL_RSM_MAX_DEFAULT != None: | |
| 84 log.msg("MAM request without RSM limited to {}".format(const.VAL_RSM_MAX_DEFAULT)) | |
| 85 ext_data['rsm'] = rsm.RSMRequest(const.VAL_RSM_MAX_DEFAULT) | |
| 86 else: | |
| 87 ext_data['rsm'] = mam_request.rsm | |
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88 |
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89 if mam_request.orderBy: |
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90 ext_data['order_by'] = mam_request.orderBy |
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91 |
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92 d = defer.ensureDeferred( |
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93 self.backend.getItemsData(mam_request.node, mam_request.sender, |
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94 mam_request.recipient, None, None, ext_data) |
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95 ) |
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96 |
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97 def make_message(elt): |
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98 # XXX: http://xmpp.org/extensions/xep-0297.html#sect-idp629952 (rule 3) |
| 322 | 99 message = domish.Element((const.NS_CLIENT, "message")) |
| 100 event = message.addElement((pubsub.NS_PUBSUB_EVENT, "event")) | |
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101 items = event.addElement('items') |
| 322 | 102 items["node"] = mam_request.node |
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103 items.addChild(elt) |
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104 return message |
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105 |
| 322 | 106 def cb(items_data): |
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107 msg_data = [] |
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108 rsm_elt = None |
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109 attributes = {} |
| 322 | 110 for item_data in items_data: |
| 111 if item_data.item.name == 'set' and item_data.item.uri == rsm.NS_RSM: | |
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112 assert rsm_elt is None |
| 322 | 113 rsm_elt = item_data.item |
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114 if rsm_elt.first: |
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115 # XXX: we check if it is the last page using initial request data |
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116 # and RSM element data. In this case, we must have the |
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117 # "complete" |
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118 # attribute set to "true". |
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119 page_max = (int(rsm_elt.first['index']) + 1) * mam_request.rsm.max |
| 414 | 120 count = int(str(rsm_elt.count)) |
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121 if page_max >= count: |
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122 # the maximum items which can be displayed is equal to or |
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123 # above the total number of items, which means we are complete |
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124 attributes['complete'] = "true" |
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125 else: |
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126 log.msg("WARNING: no <first> element in RSM request: {xml}".format( |
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127 xml = rsm_elt.toXml().encode('utf-8'))) |
| 322 | 128 elif item_data.item.name == 'item': |
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129 msg_data.append([item_data.item['id'], make_message(item_data.item), |
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130 item_data.created]) |
| 322 | 131 else: |
| 132 log.msg("WARNING: unknown element: {}".format(item_data.item.name)) | |
| 133 if pep: | |
| 134 # we need to send privileged message | |
| 135 # so me manage the sending ourself, and return | |
| 136 # an empty msg_data list to avoid double sending | |
| 137 for data in msg_data: | |
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138 self.forwardPEPMessage(mam_request, *data) |
| 322 | 139 msg_data = [] |
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140 return (msg_data, rsm_elt, attributes) |
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141 |
| 322 | 142 d.addErrback(self._mapErrors) |
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143 d.addCallback(cb) |
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144 return d |
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145 |
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146 def forwardPEPMessage(self, mam_request, id_, elt, created): |
| 322 | 147 msg = domish.Element((None, 'message')) |
| 148 msg['from'] = self.backend.privilege.server_jid.full() | |
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149 msg['to'] = mam_request.sender.full() |
| 322 | 150 result = msg.addElement((mam.NS_MAM, 'result')) |
| 151 if mam_request.query_id is not None: | |
| 152 result['queryid'] = mam_request.query_id | |
| 153 result['id'] = id_ | |
| 154 forward = result.addElement((const.NS_FORWARD, 'forwarded')) | |
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155 forward.addChild(delay.Delay(created).toElement()) |
| 322 | 156 forward.addChild(elt) |
| 157 self.backend.privilege.sendMessage(msg) | |
| 158 | |
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159 def onPrefsGetRequest(self, requestor): |
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160 """ |
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161 |
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162 @param requestor: JID of the requestor. |
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163 @type requestor: L{JID<twisted.words.protocols.jabber.jid.JID>} |
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164 |
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165 @return: The current settings. |
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166 @rtype: L{wokkel.mam.MAMPrefs} |
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167 """ |
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168 # TODO: return the actual current settings |
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169 return mam.MAMPrefs() |
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170 |
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171 def onPrefsSetRequest(self, prefs, requestor): |
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172 """ |
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173 |
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174 @param prefs: The new settings to set. |
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175 @type prefs: L{wokkel.mam.MAMPrefs} |
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176 |
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177 @param requestor: JID of the requestor. |
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178 @type requestor: L{JID<twisted.words.protocols.jabber.jid.JID>} |
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179 |
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180 @return: The settings that have actually been set. |
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181 @rtype: L{wokkel.mam.MAMPrefs} |
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182 """ |
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183 # TODO: set the new settings and return them |
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184 return mam.MAMPrefs() |