view sat/plugins/plugin_xep_0203.py @ 3528:849374e59178

component file sharing: quotas implementation: quotas can now be specified using the `quotas_json` option of `component file_sharing` section in settings. This must be a dict where: - `users` key contains default quotas for all users - `admins` key contains quotas for administrators (not implemented yet) - `jids` contain bare JID to quota mapping, to have user-specific quota The value can be either a int for quota in bytes, or a case insensitive string with an optional multiplier symbol (e.g. "500 Mio"). `None` can be used for explicit unlimited quota (which is the default is `users` is not set). When a file size is too big for quota, upload is refused with an error message indicating allowed quota, used space, and the size of the file that user wants to upload.
author Goffi <goffi@goffi.org>
date Wed, 05 May 2021 15:37:33 +0200
parents be6d91572633
children 524856bd7b19
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#!/usr/bin/env python3


# SAT plugin for Delayed Delivery (XEP-0203)
# Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org)
# Copyright (C) 2013-2016 Adrien Cossa (souliane@mailoo.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 sat.core.log import getLogger

log = getLogger(__name__)

from wokkel import disco, iwokkel, delay

try:
    from twisted.words.protocols.xmlstream import XMPPHandler
except ImportError:
    from wokkel.subprotocols import XMPPHandler
from zope.interface import implementer


NS_DD = "urn:xmpp:delay"

PLUGIN_INFO = {
    C.PI_NAME: "Delayed Delivery",
    C.PI_IMPORT_NAME: "XEP-0203",
    C.PI_TYPE: "XEP",
    C.PI_PROTOCOLS: ["XEP-0203"],
    C.PI_MAIN: "XEP_0203",
    C.PI_HANDLER: "yes",
    C.PI_DESCRIPTION: _("""Implementation of Delayed Delivery"""),
}


class XEP_0203(object):
    def __init__(self, host):
        log.info(_("Delayed Delivery plugin initialization"))
        self.host = host

    def getHandler(self, client):
        return XEP_0203_handler(self, client.profile)

    def delay(self, stamp, sender=None, desc="", parent=None):
        """Build a delay element, eventually append it to the given parent element.

        @param stamp (datetime): offset-aware timestamp of the original sending.
        @param sender (JID): entity that originally sent or delayed the message.
        @param desc (unicode): optional natural language description.
        @param parent (domish.Element): add the delay element to this element.
        @return: the delay element (domish.Element)
        """
        elt = delay.Delay(stamp, sender).toElement()
        if desc:
            elt.addContent(desc)
        if parent:
            parent.addChild(elt)
        return elt


@implementer(iwokkel.IDisco)
class XEP_0203_handler(XMPPHandler):

    def __init__(self, plugin_parent, profile):
        self.plugin_parent = plugin_parent
        self.host = plugin_parent.host
        self.profile = profile

    def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
        return [disco.DiscoFeature(NS_DD)]

    def getDiscoItems(self, requestor, target, nodeIdentifier=""):
        return []