view sat/plugins/plugin_xep_0092.py @ 2846:58ea675d0f05

quick frontend (app): added AUTO_RESYNC attribute in QuickApp, when set (default) the resync method is called on all widgets automatically: if AUTO_RESYNC is False, frontend must call itself the resync method. This is useful to improve performance, resynchronising all widgets at once may be resource intensive, and it may be more efficient to resync a widget only when it is visible.
author Goffi <goffi@goffi.org>
date Sun, 10 Mar 2019 18:02:42 +0100
parents 003b8b4b56a7
children ab2696e34d29
line wrap: on
line source

#!/usr/bin/env python2
# -*- coding: utf-8 -*-

# SàT plugin for Software Version (XEP-0092)
# Copyright (C) 2009-2019 Jérôme Poisson (goffi@goffi.org)

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.

# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

from sat.core.i18n import _
from sat.core.constants import Const as C
from twisted.internet import reactor, defer
from twisted.words.protocols.jabber import jid
from wokkel import compat
from sat.core import exceptions
from sat.core.log import getLogger

log = getLogger(__name__)

NS_VERSION = "jabber:iq:version"
TIMEOUT = 10

PLUGIN_INFO = {
    C.PI_NAME: "Software Version Plugin",
    C.PI_IMPORT_NAME: "XEP-0092",
    C.PI_TYPE: "XEP",
    C.PI_PROTOCOLS: ["XEP-0092"],
    C.PI_DEPENDENCIES: [],
    C.PI_RECOMMENDATIONS: [C.TEXT_CMDS],
    C.PI_MAIN: "XEP_0092",
    C.PI_HANDLER: "no",  # version is already handler in core.xmpp module
    C.PI_DESCRIPTION: _("""Implementation of Software Version"""),
}


class XEP_0092(object):
    def __init__(self, host):
        log.info(_("Plugin XEP_0092 initialization"))
        self.host = host
        host.bridge.addMethod(
            "getSoftwareVersion",
            ".plugin",
            in_sign="ss",
            out_sign="(sss)",
            method=self._getVersion,
            async=True,
        )
        try:
            self.host.plugins[C.TEXT_CMDS].addWhoIsCb(self._whois, 50)
        except KeyError:
            log.info(_("Text commands not available"))

    def _getVersion(self, entity_jid_s, profile_key):
        def prepareForBridge(data):
            name, version, os = data
            return (name or "", version or "", os or "")

        d = self.getVersion(jid.JID(entity_jid_s), profile_key)
        d.addCallback(prepareForBridge)
        return d

    def getVersion(self, jid_, profile_key=C.PROF_KEY_NONE):
        """ Ask version of the client that jid_ is running
        @param jid_: jid from who we want to know client's version
        @param profile_key: %(doc_profile_key)s
        @return (tuple): a defered which fire a tuple with the following data (None if not available):
                 - name: Natural language name of the software
                 - version: specific version of the software
                 - os: operating system of the queried entity
        """
        client = self.host.getClient(profile_key)

        def getVersion(__):
            iq_elt = compat.IQ(client.xmlstream, "get")
            iq_elt["to"] = jid_.full()
            iq_elt.addElement("query", NS_VERSION)
            d = iq_elt.send()
            d.addCallback(self._gotVersion)
            return d

        d = self.host.checkFeature(client, NS_VERSION, jid_)
        d.addCallback(getVersion)
        reactor.callLater(
            TIMEOUT, d.cancel
        )  # XXX: timeout needed because some clients don't answer the IQ
        return d

    def _gotVersion(self, iq_elt):
        try:
            query_elt = iq_elt.elements(NS_VERSION, "query").next()
        except StopIteration:
            raise exceptions.DataError
        ret = []
        for name in ("name", "version", "os"):
            try:
                data_elt = query_elt.elements(NS_VERSION, name).next()
                ret.append(unicode(data_elt))
            except StopIteration:
                ret.append(None)

        return tuple(ret)

    def _whois(self, client, whois_msg, mess_data, target_jid):
        """ Add software/OS information to whois """

        def versionCb(version_data):
            name, version, os = version_data
            if name:
                whois_msg.append(_("Client name: %s") % name)
            if version:
                whois_msg.append(_("Client version: %s") % version)
            if os:
                whois_msg.append(_("Operating system: %s") % os)

        def versionEb(failure):
            failure.trap(exceptions.FeatureNotFound, defer.CancelledError)
            if failure.check(failure, exceptions.FeatureNotFound):
                whois_msg.append(_("Software version not available"))
            else:
                whois_msg.append(_("Client software version request timeout"))

        d = self.getVersion(target_jid, client.profile)
        d.addCallbacks(versionCb, versionEb)
        return d