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annotate src/plugins/plugin_xep_0092.py @ 952:91836a647515

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plugin XEP-0092: use of checkFeature instead of hasFeature + timeout + message adapted to failure if software version is not available
author Goffi <goffi@goffi.org>
date Mon, 31 Mar 2014 12:23:13 +0200
parents 899dc9cd0f35
children 8ca5c990ed92
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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Goffi <goffi@goffi.org>
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1 #!/usr/bin/python
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2 # -*- coding: utf-8 -*-
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3
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4 # SàT plugin for Software Version (XEP-0092)
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5 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014 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 twisted.internet import reactor, defer
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23 from wokkel import compat
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24 from sat.core import exceptions
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25 from logging import debug, info, warning, error
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26
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27 NS_VERSION = "jabber:iq:version"
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28 TIMEOUT = 10
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29
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30 PLUGIN_INFO = {
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31 "name": "Software Version Plugin",
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32 "import_name": "XEP-0092",
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33 "type": "XEP",
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34 "protocols": ["XEP-0092"],
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35 "dependencies": [],
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36 "recommendations": [C.TEXT_CMDS],
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37 "main": "XEP_0092",
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38 "handler": "no", # version is already handler in core.xmpp module
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39 "description": _("""Implementation of Software Version""")
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40 }
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41
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42
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43 class XEP_0092(object):
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44
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45 def __init__(self, host):
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46 info(_("Plugin XEP_0092 initialization"))
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47 self.host = host
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48 try:
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49 self.host.plugins[C.TEXT_CMDS].addWhoIsCb(self._whois, 50)
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50 except KeyError:
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51 info(_("Text commands not available"))
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52
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53 def getVersion(self, jid_, profile_key=C.PROF_KEY_NONE):
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54 """ Ask version of the client that jid_ is running
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55 @param jid_: jid from who we want to know client's version
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56 @param profile_key: %(doc_profile_key)s
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57 @return: a defered which fire tuple with the following data (None if not available):
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58 - name: Natural language name of the software
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59 - version: specific version of the software
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60 - os: operating system of the queried entity
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61 """
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62 client = self.host.getClient(profile_key)
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63 def getVersion(dummy):
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64 iq_elt = compat.IQ(client.xmlstream, 'get')
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65 iq_elt['to'] = jid_.full()
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66 iq_elt.addElement("query", NS_VERSION)
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67 d = iq_elt.send()
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68 d.addCallback(self._gotVersion)
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69 return d
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70 d = self.host.checkFeature(NS_VERSION, jid_, client.profile)
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71 d.addCallback(getVersion)
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72 reactor.callLater(TIMEOUT, d.cancel) # XXX: timeout needed because some clients don't answer the IQ
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73 return d
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74
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75 def _gotVersion(self, iq_elt):
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76 try:
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77 query_elt = iq_elt.elements(NS_VERSION, 'query').next()
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78 except StopIteration:
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79 raise exceptions.DataError
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80 ret = []
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81 for name in ('name', 'version', 'os'):
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82 try:
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83 data_elt = query_elt.elements(NS_VERSION, name).next()
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84 ret.append(unicode(data_elt))
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85 except StopIteration:
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86 ret.append(None)
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87
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88 return tuple(ret)
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89
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90
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91 def _whois(self, whois_msg, mess_data, target_jid, profile):
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92 """ Add software/OS information to whois """
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93 def versionCb(version_data):
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94 name, version, os = version_data
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95 if name:
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96 whois_msg.append(_("Client name: %s") % name)
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97 if version:
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98 whois_msg.append(_("Client version: %s") % version)
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99 if os:
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100 whois_msg.append(_("Operating system: %s") % os)
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101 def versionEb(failure):
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102 failure.trap(exceptions.FeatureNotFound, defer.CancelledError)
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103 if failure.check(failure,exceptions.FeatureNotFound):
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104 whois_msg.append(_("Software version not available"))
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105 else:
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106 whois_msg.append(_("Client software version request timeout"))
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107
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108 d = self.getVersion(target_jid, profile)
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109 d.addCallbacks(versionCb, versionEb)
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110 return d
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111