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annotate sat/plugins/plugin_xep_0071.py @ 2687:e9cd473a2f46

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core (xmpp): server certificate validation: XMPP server certificate is now checked, and connection is refused (by default) if it's not valid. Certificate check can be disabled in the new parameter "Configuration/check_certificate". If certificate checking is disabled, a warning note is sent on every new connection. Twisted and Wokkel are temporarly monkey patched in sat.core.tls_patches module, until modifications are merged upstream.
author Goffi <goffi@goffi.org>
date Sat, 10 Nov 2018 10:16:35 +0100
parents 56f94936df1e
children 378188abe941
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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 Publish-Subscribe (xep-0071)
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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
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25 log = getLogger(__name__)
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26 from sat.tools.common import data_format
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27
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28 from twisted.internet import defer
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29 from wokkel import disco, iwokkel
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30 from zope.interface import implements
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31
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32 # from lxml import etree
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33 try:
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34 from lxml import html
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35 except ImportError:
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36 raise exceptions.MissingModule(
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37 u"Missing module lxml, please download/install it from http://lxml.de/"
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38 )
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39 try:
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40 from twisted.words.protocols.xmlstream import XMPPHandler
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41 except ImportError:
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42 from wokkel.subprotocols import XMPPHandler
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43
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44 NS_XHTML_IM = "http://jabber.org/protocol/xhtml-im"
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45 NS_XHTML = "http://www.w3.org/1999/xhtml"
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46
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47 PLUGIN_INFO = {
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48 C.PI_NAME: "XHTML-IM Plugin",
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49 C.PI_IMPORT_NAME: "XEP-0071",
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50 C.PI_TYPE: "XEP",
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51 C.PI_PROTOCOLS: ["XEP-0071"],
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52 C.PI_DEPENDENCIES: ["TEXT-SYNTAXES"],
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53 C.PI_MAIN: "XEP_0071",
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54 C.PI_HANDLER: "yes",
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55 C.PI_DESCRIPTION: _("""Implementation of XHTML-IM"""),
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56 }
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57
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58 allowed = {
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59 "a": set(["href", "style", "type"]),
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60 "blockquote": set(["style"]),
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61 "body": set(["style"]),
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62 "br": set([]),
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63 "cite": set(["style"]),
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64 "em": set([]),
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65 "img": set(["alt", "height", "src", "style", "width"]),
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66 "li": set(["style"]),
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67 "ol": set(["style"]),
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68 "p": set(["style"]),
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69 "span": set(["style"]),
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70 "strong": set([]),
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71 "ul": set(["style"]),
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72 }
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73
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74 styles_allowed = [
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75 "background-color",
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76 "color",
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77 "font-family",
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78 "font-size",
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79 "font-style",
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80 "font-weight",
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81 "margin-left",
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82 "margin-right",
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83 "text-align",
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84 "text-decoration",
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85 ]
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86
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87 blacklist = ["script"] # tag that we have to kill (we don't keep content)
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88
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89
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90 class XEP_0071(object):
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91 SYNTAX_XHTML_IM = "XHTML-IM"
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92
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93 def __init__(self, host):
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94 log.info(_("XHTML-IM plugin initialization"))
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95 self.host = host
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96 self._s = self.host.plugins["TEXT-SYNTAXES"]
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97 self._s.addSyntax(
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98 self.SYNTAX_XHTML_IM,
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99 lambda xhtml: xhtml,
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100 self.XHTML2XHTML_IM,
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101 [self._s.OPT_HIDDEN],
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102 )
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103 host.trigger.add("MessageReceived", self.messageReceivedTrigger)
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104 host.trigger.add("sendMessage", self.sendMessageTrigger)
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105
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106 def getHandler(self, client):
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107 return XEP_0071_handler(self)
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108
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109 def _messagePostTreat(self, data, message_elt, body_elts, client):
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110 """Callback which manage the post treatment of the message in case of XHTML-IM found
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111
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112 @param data: data send by MessageReceived trigger through post_treat deferred
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113 @param message_elt: whole <message> stanza
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114 @param body_elts: XHTML-IM body elements found
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115 @return: the data with the extra parameter updated
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116 """
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117 # TODO: check if text only body is empty, then try to convert XHTML-IM to pure text and show a warning message
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118 def converted(xhtml, lang):
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119 if lang:
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120 data["extra"]["xhtml_{}".format(lang)] = xhtml
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121 else:
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122 data["extra"]["xhtml"] = xhtml
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123
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124 defers = []
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125 for body_elt in body_elts:
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126 lang = body_elt.getAttribute((C.NS_XML, "lang"), "")
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127 treat_d = defer.succeed(None) #  deferred used for treatments
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128 if self.host.trigger.point(
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129 "xhtml_post_treat", client, message_elt, body_elt, lang, treat_d
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130 ):
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131 continue
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132 treat_d.addCallback(
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133 lambda dummy: self._s.convert(
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134 body_elt.toXml(), self.SYNTAX_XHTML_IM, safe=True
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135 )
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136 )
2110
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Goffi <goffi@goffi.org>
parents: 2080
diff changeset
137 treat_d.addCallback(converted, lang)
2d633b3c923d plugin XEP-0231: Bits of Binary first draft:
Goffi <goffi@goffi.org>
parents: 2080
diff changeset
138 defers.append(treat_d)
1955
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parents: 1934
diff changeset
139
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Goffi <goffi@goffi.org>
parents: 1934
diff changeset
140 d_list = defer.DeferredList(defers)
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Goffi <goffi@goffi.org>
parents: 1934
diff changeset
141 d_list.addCallback(lambda dummy: data)
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Goffi <goffi@goffi.org>
parents: 1934
diff changeset
142 return d_list
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Goffi <goffi@goffi.org>
parents: 1934
diff changeset
143
2080
3626b2813158 plugin XEP-0071: fixed rich and xhtml sending + add simple text body if not present
Goffi <goffi@goffi.org>
parents: 1963
diff changeset
144 def _fill_body_text(self, text, data, lang):
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
145 data["message"][lang or ""] = text
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
146 message_elt = data["xml"]
2080
3626b2813158 plugin XEP-0071: fixed rich and xhtml sending + add simple text body if not present
Goffi <goffi@goffi.org>
parents: 1963
diff changeset
147 body_elt = message_elt.addElement("body", content=text)
3626b2813158 plugin XEP-0071: fixed rich and xhtml sending + add simple text body if not present
Goffi <goffi@goffi.org>
parents: 1963
diff changeset
148 if lang:
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parents: 2562
diff changeset
149 body_elt[(C.NS_XML, "lang")] = lang
2080
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Goffi <goffi@goffi.org>
parents: 1963
diff changeset
150
3626b2813158 plugin XEP-0071: fixed rich and xhtml sending + add simple text body if not present
Goffi <goffi@goffi.org>
parents: 1963
diff changeset
151 def _check_body_text(self, data, lang, markup, syntax, defers):
3626b2813158 plugin XEP-0071: fixed rich and xhtml sending + add simple text body if not present
Goffi <goffi@goffi.org>
parents: 1963
diff changeset
152 """check if simple text message exists, and fill if needed"""
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parents: 2562
diff changeset
153 if not (lang or "") in data["message"]:
2080
3626b2813158 plugin XEP-0071: fixed rich and xhtml sending + add simple text body if not present
Goffi <goffi@goffi.org>
parents: 1963
diff changeset
154 d = self._s.convert(markup, syntax, self._s.SYNTAX_TEXT)
3626b2813158 plugin XEP-0071: fixed rich and xhtml sending + add simple text body if not present
Goffi <goffi@goffi.org>
parents: 1963
diff changeset
155 d.addCallback(self._fill_body_text, data, lang)
3626b2813158 plugin XEP-0071: fixed rich and xhtml sending + add simple text body if not present
Goffi <goffi@goffi.org>
parents: 1963
diff changeset
156 defers.append(d)
3626b2813158 plugin XEP-0071: fixed rich and xhtml sending + add simple text body if not present
Goffi <goffi@goffi.org>
parents: 1963
diff changeset
157
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parents: 2110
diff changeset
158 def _sendMessageAddRich(self, data, client):
702
a25db3fe3959 plugin XEP-0071: rich messages management for sendMessage
Goffi <goffi@goffi.org>
parents: 701
diff changeset
159 """ Construct XHTML-IM node and add it XML element
1955
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Goffi <goffi@goffi.org>
parents: 1934
diff changeset
160
2144
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parents: 2110
diff changeset
161 @param data: message data as sended by sendMessage callback
702
a25db3fe3959 plugin XEP-0071: rich messages management for sendMessage
Goffi <goffi@goffi.org>
parents: 701
diff changeset
162 """
1955
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
163 # at this point, either ['extra']['rich'] or ['extra']['xhtml'] exists
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Goffi <goffi@goffi.org>
parents: 1934
diff changeset
164 # but both can't exist at the same time
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parents: 2562
diff changeset
165 message_elt = data["xml"]
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
166 html_elt = message_elt.addElement((NS_XHTML_IM, "html"))
1955
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
167
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
168 def syntax_converted(xhtml_im, lang):
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parents: 2562
diff changeset
169 body_elt = html_elt.addElement((NS_XHTML, "body"))
1955
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
170 if lang:
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
171 body_elt[(C.NS_XML, "lang")] = lang
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
172 data["extra"]["xhtml_{}".format(lang)] = xhtml_im
1955
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Goffi <goffi@goffi.org>
parents: 1934
diff changeset
173 else:
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parents: 2562
diff changeset
174 data["extra"]["xhtml"] = xhtml_im
702
a25db3fe3959 plugin XEP-0071: rich messages management for sendMessage
Goffi <goffi@goffi.org>
parents: 701
diff changeset
175 body_elt.addRawXml(xhtml_im)
a25db3fe3959 plugin XEP-0071: rich messages management for sendMessage
Goffi <goffi@goffi.org>
parents: 701
diff changeset
176
1955
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
177 syntax = self._s.getCurrentSyntax(client.profile)
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parents: 1934
diff changeset
178 defers = []
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parents: 2562
diff changeset
179 if u"xhtml" in data["extra"]:
1955
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Goffi <goffi@goffi.org>
parents: 1934
diff changeset
180 # we have directly XHTML
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
181 for lang, xhtml in data_format.getSubDict("xhtml", data["extra"]):
2080
3626b2813158 plugin XEP-0071: fixed rich and xhtml sending + add simple text body if not present
Goffi <goffi@goffi.org>
parents: 1963
diff changeset
182 self._check_body_text(data, lang, xhtml, self._s.SYNTAX_XHTML, defers)
1955
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
183 d = self._s.convert(xhtml, self._s.SYNTAX_XHTML, self.SYNTAX_XHTML_IM)
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
184 d.addCallback(syntax_converted, lang)
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Goffi <goffi@goffi.org>
parents: 1934
diff changeset
185 defers.append(d)
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
186 elif u"rich" in data["extra"]:
1955
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
187 # we have rich syntax to convert
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
188 for lang, rich_data in data_format.getSubDict("rich", data["extra"]):
2080
3626b2813158 plugin XEP-0071: fixed rich and xhtml sending + add simple text body if not present
Goffi <goffi@goffi.org>
parents: 1963
diff changeset
189 self._check_body_text(data, lang, rich_data, syntax, defers)
1955
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
190 d = self._s.convert(rich_data, syntax, self.SYNTAX_XHTML_IM)
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
191 d.addCallback(syntax_converted, lang)
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
192 defers.append(d)
2080
3626b2813158 plugin XEP-0071: fixed rich and xhtml sending + add simple text body if not present
Goffi <goffi@goffi.org>
parents: 1963
diff changeset
193 else:
3626b2813158 plugin XEP-0071: fixed rich and xhtml sending + add simple text body if not present
Goffi <goffi@goffi.org>
parents: 1963
diff changeset
194 exceptions.InternalError(u"xhtml or rich should be present at this point")
1955
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
195 d_list = defer.DeferredList(defers)
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
196 d_list.addCallback(lambda dummy: data)
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
197 return d_list
702
a25db3fe3959 plugin XEP-0071: rich messages management for sendMessage
Goffi <goffi@goffi.org>
parents: 701
diff changeset
198
1955
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
199 def messageReceivedTrigger(self, client, message, post_treat):
668
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
200 """ Check presence of XHTML-IM in message
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
201 """
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
202 try:
2624
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
203 html_elt = message.elements(NS_XHTML_IM, "html").next()
668
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
204 except StopIteration:
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
205 # No XHTML-IM
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
206 pass
1955
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
207 else:
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
208 body_elts = html_elt.elements(NS_XHTML, "body")
2110
2d633b3c923d plugin XEP-0231: Bits of Binary first draft:
Goffi <goffi@goffi.org>
parents: 2080
diff changeset
209 post_treat.addCallback(self._messagePostTreat, message, body_elts, client)
668
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
210 return True
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
211
2144
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Goffi <goffi@goffi.org>
parents: 2110
diff changeset
212 def sendMessageTrigger(self, client, data, pre_xml_treatments, post_xml_treatments):
2080
3626b2813158 plugin XEP-0071: fixed rich and xhtml sending + add simple text body if not present
Goffi <goffi@goffi.org>
parents: 1963
diff changeset
213 """ Check presence of rich text in extra """
1955
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
214 rich = {}
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
215 xhtml = {}
2624
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
216 for key, value in data["extra"].iteritems():
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
217 if key.startswith("rich"):
1955
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
218 rich[key[5:]] = value
2624
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
219 elif key.startswith("xhtml"):
1955
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
220 xhtml[key[6:]] = value
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
221 if rich and xhtml:
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
222 raise exceptions.DataError(
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
223 _(u"Can't have XHTML and rich content at the same time")
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
224 )
1955
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
225 if rich or xhtml:
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
226 if rich:
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
227 data["rich"] = rich
1955
633b5c21aefd backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
228 else:
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
229 data["xhtml"] = xhtml
2144
1d3f73e065e1 core, jp: component handling + client handling refactoring:
Goffi <goffi@goffi.org>
parents: 2110
diff changeset
230 post_xml_treatments.addCallback(self._sendMessageAddRich, client)
702
a25db3fe3959 plugin XEP-0071: rich messages management for sendMessage
Goffi <goffi@goffi.org>
parents: 701
diff changeset
231 return True
a25db3fe3959 plugin XEP-0071: rich messages management for sendMessage
Goffi <goffi@goffi.org>
parents: 701
diff changeset
232
668
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
233 def _purgeStyle(self, styles_raw):
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
234 """ Remove unauthorised styles according to the XEP-0071
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
235 @param styles_raw: raw styles (value of the style attribute)
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
236 """
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
237 purged = []
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
238
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
239 styles = [style.strip().split(":") for style in styles_raw.split(";")]
668
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
240
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
241 for style_tuple in styles:
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
242 if len(style_tuple) != 2:
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
243 continue
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
244 name, value = style_tuple
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
245 name = name.strip()
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
246 if name not in styles_allowed:
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
247 continue
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
248 purged.append((name, value.strip()))
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
249
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
250 return u"; ".join([u"%s: %s" % data for data in purged])
668
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
251
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
252 def XHTML2XHTML_IM(self, xhtml):
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
253 """ Convert XHTML document to XHTML_IM subset
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
254 @param xhtml: raw xhtml to convert
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
255 """
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
256 # TODO: more clever tag replacement (replace forbidden tags with equivalents when possible)
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
257
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
258 parser = html.HTMLParser(remove_comments=True, encoding="utf-8")
668
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
259 root = html.fromstring(xhtml, parser=parser)
2624
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
260 body_elt = root.find("body")
668
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
261 if body_elt is None:
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
262 # we use the whole XML as body if no body element is found
2624
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
263 body_elt = html.Element("body")
668
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
264 body_elt.append(root)
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
265 else:
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
266 body_elt.attrib.clear()
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
267
7bb50096d225 plugin XEP_0071: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
268 allowed_tags = allowed.keys()
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269 to_strip = []
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270 for elem in body_elt.iter():
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271 if elem.tag not in allowed_tags:
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272 to_strip.append(elem)
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273 else:
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274 # we remove unallowed attributes
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275 attrib = elem.attrib
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276 att_to_remove = set(attrib).difference(allowed[elem.tag])
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277 for att in att_to_remove:
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278 del (attrib[att])
668
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279 if "style" in attrib:
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280 attrib["style"] = self._purgeStyle(attrib["style"])
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281
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Goffi <goffi@goffi.org>
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282 for elem in to_strip:
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Goffi <goffi@goffi.org>
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283 if elem.tag in blacklist:
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284 # we need to remove the element and all descendants
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301b342c697a core: use of the new core.log module:
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285 log.debug(u"removing black listed tag: %s" % (elem.tag))
668
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286 elem.drop_tree()
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287 else:
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288 elem.drop_tag()
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289 if len(body_elt) != 1:
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98b2400e17d6 plugin XEP-0071: XHTML2XHTML_IM don't return the <body> root tag anymore.
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290 root_elt = body_elt
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291 body_elt.tag = "p"
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parents: 668
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292 else:
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293 root_elt = body_elt[0]
668
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294
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295 return html.tostring(root_elt, encoding="unicode", method="xml")
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296
668
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297
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298 class XEP_0071_handler(XMPPHandler):
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299 implements(iwokkel.IDisco)
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300
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301 def __init__(self, plugin_parent):
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302 self.plugin_parent = plugin_parent
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303 self.host = plugin_parent.host
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304
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305 def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
668
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306 return [disco.DiscoFeature(NS_XHTML_IM)]
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parents:
diff changeset
307
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parents: 2562
diff changeset
308 def getDiscoItems(self, requestor, target, nodeIdentifier=""):
668
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parents:
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309 return []