Mercurial > libervia-backend
annotate src/plugins/plugin_adhoc_dbus.py @ 972:07b817f5a197
core: better plugin initialisation sequence:
- profileConnected are now executed in a deferredList, instead of one after the other
- failure are collected, and a global message show which plugins failed and the failure message
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Wed, 02 Apr 2014 12:31:23 +0200 |
| parents | 1a759096ccbd |
| children | 301b342c697a |
| rev | line source |
|---|---|
| 822 | 1 #!/usr/bin/python |
| 2 # -*- coding: utf-8 -*- | |
| 3 | |
| 4 # SAT plugin for adding D-Bus to Ad-Hoc Commands | |
| 5 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014 Jérôme Poisson (goffi@goffi.org) | |
| 6 | |
| 7 # This program is free software: you can redistribute it and/or modify | |
| 8 # it under the terms of the GNU Affero General Public License as published by | |
| 9 # the Free Software Foundation, either version 3 of the License, or | |
| 10 # (at your option) any later version. | |
| 11 | |
| 12 # This program is distributed in the hope that it will be useful, | |
| 13 # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 # GNU Affero General Public License for more details. | |
| 16 | |
| 17 # You should have received a copy of the GNU Affero General Public License | |
| 18 # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 | |
| 20 from sat.core.i18n import _, D_ | |
|
916
1a759096ccbd
core: use of Const for profile_key + replaced '@DEFAULT@' default profile_key by '@NONE@'
Goffi <goffi@goffi.org>
parents:
822
diff
changeset
|
21 from sat.core.constants import Const as C |
| 822 | 22 from logging import debug, info, warning, error |
| 23 from twisted.words.protocols.jabber import jid | |
| 24 from twisted.internet import defer, reactor | |
| 25 from wokkel import data_form | |
| 26 from lxml import etree | |
| 27 from os import path | |
| 28 import uuid | |
| 29 import dbus | |
| 30 from dbus.mainloop.glib import DBusGMainLoop | |
| 31 DBusGMainLoop(set_as_default=True) | |
| 32 | |
| 33 FD_NAME = "org.freedesktop.DBus" | |
| 34 FD_PATH = "/org/freedekstop/DBus" | |
| 35 INTROSPECT_IFACE = "org.freedesktop.DBus.Introspectable" | |
| 36 | |
| 37 INTROSPECT_METHOD = "Introspect" | |
| 38 IGNORED_IFACES_START = ('org.freedesktop', 'org.qtproject', 'org.kde.KMainWindow') # commands in interface starting with these values will be ignored | |
| 39 FLAG_LOOP = 'LOOP' | |
| 40 | |
| 41 PLUGIN_INFO = { | |
| 42 "name": "Ad-Hoc Commands - D-Bus", | |
| 43 "import_name": "AD_HOC_DBUS", | |
| 44 "type": "Misc", | |
| 45 "protocols": [], | |
| 46 "dependencies": ["XEP-0050"], | |
| 47 "main": "AdHocDBus", | |
| 48 "handler": "no", | |
| 49 "description": _("""Add D-Bus management to Ad-Hoc commands""") | |
| 50 } | |
| 51 | |
| 52 | |
| 53 class AdHocDBus(object): | |
| 54 | |
| 55 def __init__(self, host): | |
| 56 info(_("plugin Ad-Hoc D-Bus initialization")) | |
| 57 self.host = host | |
| 58 host.bridge.addMethod("adHocDBusAddAuto", ".plugin", in_sign='sasasasasasass', out_sign='(sa(sss))', | |
| 59 method=self._adHocDBusAddAuto, | |
| 60 async=True) | |
| 61 self.session_bus = dbus.SessionBus() | |
| 62 self.fd_object = self.session_bus.get_object(FD_NAME, FD_PATH, introspect=False) | |
| 63 self.XEP_0050 = host.plugins['XEP-0050'] | |
| 64 | |
| 65 def _DBusAsyncCall(self, proxy, method, *args, **kwargs): | |
| 66 """ Call a DBus method asynchronously and return a deferred | |
| 67 @param proxy: DBus object proxy, as returner by get_object | |
| 68 @param method: name of the method to call | |
| 69 @param args: will be transmitted to the method | |
| 70 @param kwargs: will be transmetted to the method, except for the following poped values: | |
| 71 - interface: name of the interface to use | |
| 72 @return: a deferred | |
| 73 | |
| 74 """ | |
| 75 d = defer.Deferred() | |
| 76 interface = kwargs.pop('interface', None) | |
| 77 kwargs['reply_handler'] = lambda ret=None: d.callback(ret) | |
| 78 kwargs['error_handler'] = d.errback | |
| 79 proxy.get_dbus_method(method, dbus_interface=interface)(*args, **kwargs) | |
| 80 return d | |
| 81 | |
| 82 def _DBusListNames(self): | |
| 83 return self._DBusAsyncCall(self.fd_object, "ListNames") | |
| 84 | |
| 85 def _DBusIntrospect(self, proxy): | |
| 86 return self._DBusAsyncCall(proxy, INTROSPECT_METHOD, interface=INTROSPECT_IFACE) | |
| 87 | |
| 88 def _acceptMethod(self, method): | |
| 89 """ Return True if we accept the method for a command | |
| 90 @param method: etree.Element | |
| 91 @return: True if the method is acceptable | |
| 92 | |
| 93 """ | |
| 94 if method.xpath("arg[@direction='in']"): # we don't accept method with argument for the moment | |
| 95 return False | |
| 96 return True | |
| 97 | |
| 98 @defer.inlineCallbacks | |
| 99 def _introspect(self, methods, bus_name, proxy): | |
| 100 debug("introspecting path [%s]" % proxy.object_path) | |
| 101 introspect_xml = yield self._DBusIntrospect(proxy) | |
| 102 el = etree.fromstring(introspect_xml) | |
| 103 for node in el.iterchildren('node', 'interface'): | |
| 104 if node.tag == 'node': | |
| 105 new_path = path.join(proxy.object_path, node.get('name')) | |
| 106 new_proxy = self.session_bus.get_object(bus_name, new_path, introspect=False) | |
| 107 yield self._introspect(methods, bus_name, new_proxy) | |
| 108 elif node.tag == 'interface': | |
| 109 name = node.get('name') | |
| 110 if any(name.startswith(ignored) for ignored in IGNORED_IFACES_START): | |
| 111 debug('interface [%s] is ignored' % name) | |
| 112 continue | |
| 113 debug("introspecting interface [%s]" % name) | |
| 114 for method in node.iterchildren('method'): | |
| 115 if self._acceptMethod(method): | |
| 116 method_name = method.get('name') | |
| 117 debug("method accepted: [%s]" % method_name) | |
| 118 methods.add((proxy.object_path, name, method_name)) | |
| 119 | |
| 120 def _adHocDBusAddAuto(self, prog_name, allowed_jids, allowed_groups, allowed_magics, forbidden_jids, forbidden_groups, flags, profile_key): | |
| 121 return self.adHocDBusAddAuto(prog_name, allowed_jids, allowed_groups, allowed_magics, forbidden_jids, forbidden_groups, flags, profile_key) | |
| 122 | |
| 123 @defer.inlineCallbacks | |
|
916
1a759096ccbd
core: use of Const for profile_key + replaced '@DEFAULT@' default profile_key by '@NONE@'
Goffi <goffi@goffi.org>
parents:
822
diff
changeset
|
124 def adHocDBusAddAuto(self, prog_name, allowed_jids=None, allowed_groups=None, allowed_magics=None, forbidden_jids=None, forbidden_groups=None, flags=None, profile_key=C.PROF_KEY_NONE): |
| 822 | 125 bus_names = yield self._DBusListNames() |
| 126 bus_names = [bus_name for bus_name in bus_names if '.' + prog_name in bus_name] | |
| 127 if not bus_names: | |
| 128 info("Can't find any bus for [%s]" % prog_name) | |
| 129 return | |
| 130 bus_names.sort() | |
| 131 for bus_name in bus_names: | |
| 132 if bus_name.endswith(prog_name): | |
| 133 break | |
| 134 info("bus name found: [%s]" % bus_name) | |
| 135 proxy = self.session_bus.get_object(bus_name, '/', introspect=False) | |
| 136 methods = set() | |
| 137 | |
| 138 yield self._introspect(methods, bus_name, proxy) | |
| 139 | |
| 140 if methods: | |
| 141 self._addCommand(prog_name, bus_name, methods, | |
| 142 allowed_jids = allowed_jids, | |
| 143 allowed_groups = allowed_groups, | |
| 144 allowed_magics = allowed_magics, | |
| 145 forbidden_jids = forbidden_jids, | |
| 146 forbidden_groups = forbidden_groups, | |
| 147 flags = flags, | |
| 148 profile_key = profile_key) | |
| 149 | |
| 150 defer.returnValue((bus_name, methods)) | |
| 151 | |
| 152 | |
|
916
1a759096ccbd
core: use of Const for profile_key + replaced '@DEFAULT@' default profile_key by '@NONE@'
Goffi <goffi@goffi.org>
parents:
822
diff
changeset
|
153 def _addCommand(self, adhoc_name, bus_name, methods, allowed_jids=None, allowed_groups=None, allowed_magics=None, forbidden_jids=None, forbidden_groups=None, flags=None, profile_key=C.PROF_KEY_NONE): |
| 822 | 154 if flags is None: |
| 155 flags = set() | |
| 156 | |
| 157 def DBusCallback(command_elt, session_data, action, node, profile): | |
| 158 actions = session_data.setdefault('actions',[]) | |
| 159 names_map = session_data.setdefault('names_map', {}) | |
| 160 actions.append(action) | |
| 161 | |
| 162 if len(actions) == 1: | |
| 163 # it's our first request, we ask the desired new status | |
| 164 status = self.XEP_0050.STATUS.EXECUTING | |
| 165 form = data_form.Form('form', title=_('Command selection')) | |
| 166 options = [] | |
| 167 for path, iface, command in methods: | |
| 168 label = command.rsplit('.',1)[-1] | |
| 169 name = str(uuid.uuid4()) | |
| 170 names_map[name] = (path, iface, command) | |
| 171 options.append(data_form.Option(name, label)) | |
| 172 | |
| 173 field = data_form.Field('list-single', 'command', options=options, required=True) | |
| 174 form.addField(field) | |
| 175 | |
| 176 payload = form.toElement() | |
| 177 note = None | |
| 178 | |
| 179 elif len(actions) == 2: | |
| 180 # we should have the answer here | |
| 181 try: | |
| 182 x_elt = command_elt.elements(data_form.NS_X_DATA,'x').next() | |
| 183 answer_form = data_form.Form.fromElement(x_elt) | |
| 184 command = answer_form['command'] | |
| 185 except KeyError, StopIteration: | |
| 186 raise self.XEP_0050.AdHocError(self.XEP_0050.ERROR.BAD_PAYLOAD) | |
| 187 | |
| 188 if command not in names_map: | |
| 189 raise self.XEP_0050.AdHocError(self.XEP_0050.ERROR.BAD_PAYLOAD) | |
| 190 | |
| 191 path, iface, command = names_map[command] | |
| 192 proxy = self.session_bus.get_object(bus_name, path) | |
| 193 | |
| 194 d = self._DBusAsyncCall(proxy, command, interface=iface) | |
| 195 | |
| 196 # job done, we can end the session, except if we have FLAG_LOOP | |
| 197 if FLAG_LOOP in flags: | |
| 198 # We have a loop, so we clear everything and we execute again the command as we had a first call (command_elt is not used, so None is OK) | |
| 199 del actions[:] | |
| 200 names_map.clear() | |
| 201 return DBusCallback(None, session_data, self.XEP_0050.ACTION.EXECUTE, node, profile) | |
| 202 form = data_form.Form('form', title=_(u'Updated')) | |
| 203 form.addField(data_form.Field('fixed', u'Command sent')) | |
| 204 status = self.XEP_0050.STATUS.COMPLETED | |
| 205 payload = None | |
| 206 note = (self.XEP_0050.NOTE.INFO, _(u"Command sent")) | |
| 207 else: | |
| 208 raise self.XEP_0050.AdHocError(self.XEP_0050.ERROR.INTERNAL) | |
| 209 | |
| 210 return (payload, status, None, note) | |
| 211 | |
| 212 self.XEP_0050.addAdHocCommand(DBusCallback, adhoc_name, | |
| 213 allowed_jids = allowed_jids, | |
| 214 allowed_groups = allowed_groups, | |
| 215 allowed_magics = allowed_magics, | |
| 216 forbidden_jids = forbidden_jids, | |
| 217 forbidden_groups = forbidden_groups, | |
| 218 profile_key = profile_key) |