annotate sat/plugins/plugin_exp_command_export.py @ 2613:9680cd958529

plugin XEP-0045: fixed crash when muc service is not found
author Goffi <goffi@goffi.org>
date Thu, 21 Jun 2018 01:21:44 +0200
parents 26edcf3a30eb
children 56f94936df1e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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 to export commands (experimental)
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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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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.log import getLogger
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23 log = getLogger(__name__)
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24 from twisted.words.protocols.jabber import jid
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25 from twisted.internet import reactor, protocol
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26
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27 from sat.tools import trigger
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28 from sat.tools.utils import clean_ustr
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29
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30 PLUGIN_INFO = {
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31 C.PI_NAME: "Command export plugin",
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32 C.PI_IMPORT_NAME: "EXP-COMMANS-EXPORT",
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33 C.PI_TYPE: "EXP",
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34 C.PI_PROTOCOLS: [],
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35 C.PI_DEPENDENCIES: [],
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36 C.PI_MAIN: "CommandExport",
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37 C.PI_HANDLER: "no",
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38 C.PI_DESCRIPTION: _("""Implementation of command export""")
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39 }
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40
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41 class ExportCommandProtocol(protocol.ProcessProtocol):
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42 """ Try to register an account with prosody """
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43
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44 def __init__(self, parent, client, target, options):
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45 self.parent = parent
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46 self.target = target
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47 self.options = options
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48 self.client = client
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49
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50 def _clean(self, data):
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51 if not data:
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52 log.error ("data should not be empty !")
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53 return u""
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54 decoded = data.decode('utf-8', 'ignore')[:-1 if data[-1] == '\n' else None]
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55 return clean_ustr(decoded)
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56
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57 def connectionMade(self):
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58 log.info("connectionMade :)")
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59
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60 def outReceived(self, data):
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61 self.client.sendMessage(self.target, {'': self._clean(data)}, no_trigger=True)
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63 def errReceived(self, data):
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64 self.client.sendMessage(self.target, {'': self._clean(data)}, no_trigger=True)
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66 def processEnded(self, reason):
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67 log.info (u"process finished: %d" % (reason.value.exitCode,))
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68 self.parent.removeProcess(self.target, self)
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69
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70 def write(self, message):
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71 self.transport.write(message.encode('utf-8'))
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72
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73 def boolOption(self, key):
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74 """ Get boolean value from options
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75 @param key: name of the option
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76 @return: True if key exists and set to "true" (case insensitive),
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77 False in all other cases """
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78 value = self.options.get(key, "")
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79 return value.lower() == "true"
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80
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81
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82 class CommandExport(object):
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83 """Command export plugin: export a command to an entity"""
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84 # XXX: This plugin can be potentially dangerous if we don't trust entities linked
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85 # this is specially true if we have other triggers.
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86 # FIXME: spawned should be a client attribute, not a class one
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87
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88 def __init__(self, host):
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89 log.info(_("Plugin command export initialization"))
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90 self.host = host
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91 self.spawned = {} # key = entity
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92 host.trigger.add("MessageReceived", self.MessageReceivedTrigger, priority=10000)
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93 host.bridge.addMethod("exportCommand", ".plugin", in_sign='sasasa{ss}s', out_sign='', method=self._exportCommand)
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94
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95 def removeProcess(self, entity, process):
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96 """ Called when the process is finished
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97 @param entity: jid.JID attached to the process
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98 @param process: process to remove"""
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99 try:
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100 processes_set = self.spawned[(entity, process.client.profile)]
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101 processes_set.discard(process)
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102 if not processes_set:
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103 del(self.spawned[(entity, process.client.profile)])
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104 except ValueError:
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105 pass
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106
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107 def MessageReceivedTrigger(self, client, message_elt, post_treat):
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108 """ Check if source is linked and repeat message, else do nothing """
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109 from_jid = jid.JID(message_elt["from"])
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110 spawned_key = (from_jid.userhostJID(), client.profile)
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111
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112 if spawned_key in self.spawned:
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113 try:
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114 body = message_elt.elements(C.NS_CLIENT, 'body').next()
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115 except StopIteration:
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116 # do not block message without body (chat state notification...)
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117 return True
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118
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119 mess_data = unicode(body) + '\n'
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120 processes_set = self.spawned[spawned_key]
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121 _continue = False
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122 exclusive = False
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123 for process in processes_set:
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124 process.write(mess_data)
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125 _continue &= process.boolOption("continue")
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126 exclusive |= process.boolOption("exclusive")
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127 if exclusive:
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128 raise trigger.SkipOtherTriggers
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129 return _continue
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130
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131 return True
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132
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133 def _exportCommand(self, command, args, targets, options, profile_key):
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134 """ Export a commands to authorised targets
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135 @param command: full path of the command to execute
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136 @param args: list of arguments, with command name as first one
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137 @param targets: list of allowed entities
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138 @param options: export options, a dict which can have the following keys ("true" to set booleans):
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139 - exclusive: if set, skip all other triggers
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140 - loop: if set, restart the command once terminated #TODO
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141 - pty: if set, launch in a pseudo terminal
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142 - continue: continue normal MessageReceived handling
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143 """
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144 client = self.host.getClient(profile_key)
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145 for target in targets:
16a9affc49cf plugin export command: first draft
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146 try:
16a9affc49cf plugin export command: first draft
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147 _jid = jid.JID(target)
16a9affc49cf plugin export command: first draft
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148 if not _jid.user or not _jid.host:
16a9affc49cf plugin export command: first draft
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149 raise jid.InvalidFormat
16a9affc49cf plugin export command: first draft
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150 _jid = _jid.userhostJID()
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151 except (RuntimeError, jid.InvalidFormat, AttributeError):
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152 log.info(u"invalid target ignored: %s" % (target,))
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153 continue
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154 process_prot = ExportCommandProtocol(self, client, _jid, options)
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155 self.spawned.setdefault((_jid, client.profile),set()).add(process_prot)
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156 reactor.spawnProcess(process_prot, command, args, usePTY = process_prot.boolOption('pty'))