Mercurial > libervia-backend
annotate sat/plugins/plugin_exp_command_export.py @ 3237:b0c57c9a4bd8
plugin XEP-0384: OMEMO trust policy:
OMEMO trust policy can now be specified. For now there are 2 policies:
- `manual`: each new device fingerprint must be explicitly trusted or not before the
device can be used, and the message sent
- `BTBV` (Blind Trust Before Verification): each new device fingerprint is automically
trusted, until user manually trust or not a device, in which case the behaviour becomes
the same as for `manual` for the entity. When using the Trust UI, user can put the
entity back to blind trust if they wish.
A message is send as feedback to user when a new device is/must be trusted, trying to
explain clearly what's happening to the user.
Devices which have been automically trusted are marked, so user can know which ones may
cause security issue.
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Fri, 27 Mar 2020 10:02:14 +0100 |
| parents | dcebc585c29f |
| children | be6d91572633 |
| rev | line source |
|---|---|
| 3028 | 1 #!/usr/bin/env python3 |
| 3137 | 2 |
| 604 | 3 |
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4 # SAT plugin to export commands (experimental) |
| 3136 | 5 # Copyright (C) 2009-2020 Jérôme Poisson (goffi@goffi.org) |
| 604 | 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. |
| 604 | 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. |
| 604 | 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/>. |
| 604 | 19 |
| 771 | 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 |
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24 log = getLogger(__name__) |
| 604 | 25 from twisted.words.protocols.jabber import jid |
| 26 from twisted.internet import reactor, protocol | |
| 27 | |
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28 from sat.tools import trigger |
| 604 | 29 from sat.tools.utils import clean_ustr |
| 30 | |
| 31 PLUGIN_INFO = { | |
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32 C.PI_NAME: "Command export plugin", |
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33 C.PI_IMPORT_NAME: "EXP-COMMANS-EXPORT", |
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34 C.PI_TYPE: "EXP", |
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35 C.PI_PROTOCOLS: [], |
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36 C.PI_DEPENDENCIES: [], |
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37 C.PI_MAIN: "CommandExport", |
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38 C.PI_HANDLER: "no", |
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39 C.PI_DESCRIPTION: _("""Implementation of command export"""), |
| 604 | 40 } |
| 41 | |
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42 |
| 604 | 43 class ExportCommandProtocol(protocol.ProcessProtocol): |
| 44 """ Try to register an account with prosody """ | |
| 45 | |
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46 def __init__(self, parent, client, target, options): |
| 604 | 47 self.parent = parent |
| 48 self.target = target | |
| 49 self.options = options | |
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50 self.client = client |
| 604 | 51 |
| 52 def _clean(self, data): | |
| 53 if not data: | |
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54 log.error("data should not be empty !") |
| 3028 | 55 return "" |
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56 decoded = data.decode("utf-8", "ignore")[: -1 if data[-1] == "\n" else None] |
| 604 | 57 return clean_ustr(decoded) |
| 58 | |
| 59 def connectionMade(self): | |
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60 log.info("connectionMade :)") |
| 604 | 61 |
| 62 def outReceived(self, data): | |
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63 self.client.sendMessage(self.target, {"": self._clean(data)}, no_trigger=True) |
| 604 | 64 |
| 65 def errReceived(self, data): | |
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66 self.client.sendMessage(self.target, {"": self._clean(data)}, no_trigger=True) |
| 604 | 67 |
| 68 def processEnded(self, reason): | |
| 3028 | 69 log.info("process finished: %d" % (reason.value.exitCode,)) |
| 604 | 70 self.parent.removeProcess(self.target, self) |
| 71 | |
| 72 def write(self, message): | |
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73 self.transport.write(message.encode("utf-8")) |
| 604 | 74 |
| 75 def boolOption(self, key): | |
| 76 """ Get boolean value from options | |
| 77 @param key: name of the option | |
| 78 @return: True if key exists and set to "true" (case insensitive), | |
| 79 False in all other cases """ | |
| 80 value = self.options.get(key, "") | |
| 81 return value.lower() == "true" | |
| 82 | |
| 83 | |
| 84 class CommandExport(object): | |
| 85 """Command export plugin: export a command to an entity""" | |
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86 |
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87 # XXX: This plugin can be potentially dangerous if we don't trust entities linked |
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88 # this is specially true if we have other triggers. |
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89 # FIXME: spawned should be a client attribute, not a class one |
| 604 | 90 |
| 91 def __init__(self, host): | |
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92 log.info(_("Plugin command export initialization")) |
| 604 | 93 self.host = host |
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94 self.spawned = {} # key = entity |
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95 host.trigger.add("messageReceived", self.messageReceivedTrigger, priority=10000) |
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96 host.bridge.addMethod( |
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97 "exportCommand", |
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98 ".plugin", |
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99 in_sign="sasasa{ss}s", |
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100 out_sign="", |
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101 method=self._exportCommand, |
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102 ) |
| 604 | 103 |
| 104 def removeProcess(self, entity, process): | |
| 105 """ Called when the process is finished | |
| 106 @param entity: jid.JID attached to the process | |
| 107 @param process: process to remove""" | |
| 108 try: | |
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109 processes_set = self.spawned[(entity, process.client.profile)] |
| 604 | 110 processes_set.discard(process) |
| 111 if not processes_set: | |
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112 del (self.spawned[(entity, process.client.profile)]) |
| 604 | 113 except ValueError: |
| 114 pass | |
| 115 | |
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116 def messageReceivedTrigger(self, client, message_elt, post_treat): |
| 604 | 117 """ Check if source is linked and repeat message, else do nothing """ |
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118 from_jid = jid.JID(message_elt["from"]) |
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119 spawned_key = (from_jid.userhostJID(), client.profile) |
| 604 | 120 |
| 121 if spawned_key in self.spawned: | |
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122 try: |
| 3028 | 123 body = next(message_elt.elements(C.NS_CLIENT, "body")) |
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124 except StopIteration: |
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125 # do not block message without body (chat state notification...) |
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126 return True |
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127 |
| 3028 | 128 mess_data = str(body) + "\n" |
| 604 | 129 processes_set = self.spawned[spawned_key] |
| 130 _continue = False | |
| 131 exclusive = False | |
| 132 for process in processes_set: | |
| 133 process.write(mess_data) | |
| 134 _continue &= process.boolOption("continue") | |
| 135 exclusive |= process.boolOption("exclusive") | |
| 136 if exclusive: | |
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137 raise trigger.SkipOtherTriggers |
| 604 | 138 return _continue |
| 139 | |
| 140 return True | |
| 141 | |
| 142 def _exportCommand(self, command, args, targets, options, profile_key): | |
| 143 """ Export a commands to authorised targets | |
| 144 @param command: full path of the command to execute | |
| 145 @param args: list of arguments, with command name as first one | |
| 146 @param targets: list of allowed entities | |
| 147 @param options: export options, a dict which can have the following keys ("true" to set booleans): | |
| 148 - exclusive: if set, skip all other triggers | |
| 149 - loop: if set, restart the command once terminated #TODO | |
| 150 - pty: if set, launch in a pseudo terminal | |
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151 - continue: continue normal messageReceived handling |
| 604 | 152 """ |
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153 client = self.host.getClient(profile_key) |
| 604 | 154 for target in targets: |
| 155 try: | |
| 156 _jid = jid.JID(target) | |
| 157 if not _jid.user or not _jid.host: | |
| 158 raise jid.InvalidFormat | |
| 159 _jid = _jid.userhostJID() | |
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160 except (RuntimeError, jid.InvalidFormat, AttributeError): |
| 3028 | 161 log.info("invalid target ignored: %s" % (target,)) |
| 604 | 162 continue |
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163 process_prot = ExportCommandProtocol(self, client, _jid, options) |
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164 self.spawned.setdefault((_jid, client.profile), set()).add(process_prot) |
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165 reactor.spawnProcess( |
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166 process_prot, command, args, usePTY=process_prot.boolOption("pty") |
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167 ) |