Mercurial > libervia-backend
annotate src/plugins/plugin_exp_command_export.py @ 1525:49d33cb48207
plugin file: first draft:
This plugin will be used to manage file transfers, and choose the best available method.
It embed a class dedicated to files: SatFile, which act as a file objects but manage some high level stuffs (like progression).
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Fri, 25 Sep 2015 19:19:12 +0200 |
| parents | 3265a2639182 |
| children | 22a8e770cb7b |
| rev | line source |
|---|---|
| 604 | 1 #!/usr/bin/python |
| 2 # -*- coding: utf-8 -*- | |
| 3 | |
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4 # SAT plugin to export commands (experimental) |
| 1396 | 5 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015 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.log import getLogger |
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22 log = getLogger(__name__) |
| 604 | 23 from twisted.words.protocols.jabber import jid |
| 24 from twisted.internet import reactor, protocol | |
| 25 | |
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26 from sat.tools import trigger |
| 604 | 27 from sat.tools.utils import clean_ustr |
| 28 | |
| 29 PLUGIN_INFO = { | |
| 30 "name": "Command export plugin", | |
| 31 "import_name": "EXP-COMMANS-EXPORT", | |
| 32 "type": "EXP", | |
| 33 "protocols": [], | |
| 34 "dependencies": [], | |
| 35 "main": "CommandExport", | |
| 36 "handler": "no", | |
| 37 "description": _("""Implementation of command export""") | |
| 38 } | |
| 39 | |
| 40 class ExportCommandProtocol(protocol.ProcessProtocol): | |
| 41 """ Try to register an account with prosody """ | |
| 42 | |
| 43 def __init__(self, parent, target, options, profile): | |
| 44 self.parent = parent | |
| 45 self.target = target | |
| 46 self.options = options | |
| 47 self.profile = profile | |
| 48 | |
| 49 def _clean(self, data): | |
| 50 if not data: | |
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51 log.error ("data should not be empty !") |
| 604 | 52 return u"" |
| 53 decoded = data.decode('utf-8', 'ignore')[:-1 if data[-1] == '\n' else None] | |
| 54 return clean_ustr(decoded) | |
| 55 | |
| 56 def connectionMade(self): | |
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57 log.info("connectionMade :)") |
| 604 | 58 |
| 59 def outReceived(self, data): | |
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60 self.parent.host.sendMessage(self.target, self._clean(data), no_trigger=True, profile_key=self.profile) |
| 604 | 61 |
| 62 def errReceived(self, data): | |
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63 self.parent.host.sendMessage(self.target, self._clean(data), no_trigger=True, profile_key=self.profile) |
| 604 | 64 |
| 65 def processEnded(self, reason): | |
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66 log.info (u"process finished: %d" % (reason.value.exitCode,)) |
| 604 | 67 self.parent.removeProcess(self.target, self) |
| 68 | |
| 69 def write(self, message): | |
| 70 self.transport.write(message.encode('utf-8')) | |
| 71 | |
| 72 def boolOption(self, key): | |
| 73 """ Get boolean value from options | |
| 74 @param key: name of the option | |
| 75 @return: True if key exists and set to "true" (case insensitive), | |
| 76 False in all other cases """ | |
| 77 value = self.options.get(key, "") | |
| 78 return value.lower() == "true" | |
| 79 | |
| 80 | |
| 81 class CommandExport(object): | |
| 82 """Command export plugin: export a command to an entity""" | |
| 83 #XXX: This plugin can be potentially dangerous if we don't trust entities linked | |
| 84 # this is specially true if we have other triggers. | |
| 85 | |
| 86 def __init__(self, host): | |
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87 log.info(_("Plugin command export initialization")) |
| 604 | 88 self.host = host |
| 89 self.spawned = {} # key = entity | |
| 90 host.trigger.add("MessageReceived", self.MessageReceivedTrigger, priority=10000) | |
| 91 host.bridge.addMethod("exportCommand", ".plugin", in_sign='sasasa{ss}s', out_sign='', method=self._exportCommand) | |
| 92 | |
| 93 def removeProcess(self, entity, process): | |
| 94 """ Called when the process is finished | |
| 95 @param entity: jid.JID attached to the process | |
| 96 @param process: process to remove""" | |
| 97 try: | |
| 98 processes_set = self.spawned[(entity, process.profile)] | |
| 99 processes_set.discard(process) | |
| 100 if not processes_set: | |
| 101 del(self.spawned[(entity, process.profile)]) | |
| 102 except ValueError: | |
| 103 pass | |
| 104 | |
| 663 | 105 def MessageReceivedTrigger(self, message, post_treat, profile): |
| 604 | 106 """ Check if source is linked and repeat message, else do nothing """ |
| 107 from_jid = jid.JID(message["from"]) | |
| 108 spawned_key = (from_jid.userhostJID(), profile) | |
| 109 try: | |
| 110 body = [e for e in message.elements() if e.name == 'body'][0] | |
| 111 except IndexError: | |
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112 # do not block message without body (chat state notification...) |
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113 log.warning("No body element found in message, following normal behaviour") |
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114 return True |
| 604 | 115 |
| 116 mess_data = unicode(body) + '\n' | |
| 117 | |
| 118 if spawned_key in self.spawned: | |
| 119 processes_set = self.spawned[spawned_key] | |
| 120 _continue = False | |
| 121 exclusive = False | |
| 122 for process in processes_set: | |
| 123 process.write(mess_data) | |
| 124 _continue &= process.boolOption("continue") | |
| 125 exclusive |= process.boolOption("exclusive") | |
| 126 if exclusive: | |
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127 raise trigger.SkipOtherTriggers |
| 604 | 128 return _continue |
| 129 | |
| 130 return True | |
| 131 | |
| 132 def _exportCommand(self, command, args, targets, options, profile_key): | |
| 133 """ Export a commands to authorised targets | |
| 134 @param command: full path of the command to execute | |
| 135 @param args: list of arguments, with command name as first one | |
| 136 @param targets: list of allowed entities | |
| 137 @param options: export options, a dict which can have the following keys ("true" to set booleans): | |
| 138 - exclusive: if set, skip all other triggers | |
| 139 - loop: if set, restart the command once terminated #TODO | |
| 140 - pty: if set, launch in a pseudo terminal | |
| 141 - continue: continue normal MessageReceived handling | |
| 142 """ | |
| 143 profile = self.host.memory.getProfileName(profile_key) | |
| 144 if not profile: | |
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145 log.warning(u"Unknown profile [%s]" % (profile,)) |
| 604 | 146 return |
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147 |
| 604 | 148 for target in targets: |
| 149 try: | |
| 150 _jid = jid.JID(target) | |
| 151 if not _jid.user or not _jid.host: | |
| 152 raise jid.InvalidFormat | |
| 153 _jid = _jid.userhostJID() | |
| 154 except (jid.InvalidFormat, RuntimeError): | |
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155 log.info(u"invalid target ignored: %s" % (target,)) |
| 604 | 156 continue |
| 157 process_prot = ExportCommandProtocol(self, _jid, options, profile) | |
| 158 self.spawned.setdefault((_jid, profile),set()).add(process_prot) | |
| 159 reactor.spawnProcess(process_prot, command, args, usePTY = process_prot.boolOption('pty')) | |
| 160 |