view sat/tools/common/uri.py @ 3405:ecdb3728749e

plugin XEP-0353: Jingle Message Initiation implementation: This plugin uses the new `XEP-0166_initiate` trigger to initiate a Jingle session with messages if the peer jid has no resource specified. On reception, if the sender is not in our roster, a confirmation is requested to user to avoid leaking presence and IP. If user refuses the session for somebody not in roster, nothing is sent at all (the request is just ignored).
author Goffi <goffi@goffi.org>
date Thu, 12 Nov 2020 14:53:15 +0100
parents 559a625a236b
children be6d91572633
line wrap: on
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#!/usr/bin/env python3


# SAT: a jabber client
# Copyright (C) 2009-2020 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/>.

""" XMPP uri parsing tools """

import urllib.parse
import urllib.request, urllib.parse, urllib.error

# FIXME: basic implementation, need to follow RFC 5122


def parseXMPPUri(uri):
    """Parse an XMPP uri and return a dict with various information

    @param uri(unicode): uri to parse
    @return dict(unicode, unicode): data depending of the URI where key can be:
        type: one of ("pubsub", TODO)
            type is always present
        sub_type: can be:
            - microblog
            only used for pubsub for now
        path: XMPP path (jid of the service or entity)
        node: node used
        id: id of the element (item for pubsub)
    @raise ValueError: the scheme is not xmpp
    """
    uri_split = urllib.parse.urlsplit(uri)
    if uri_split.scheme != "xmpp":
        raise ValueError("this is not a XMPP URI")

    # XXX: we don't use jid.JID for path as it can be used both in backend and frontend
    # which may use different JID classes
    data = {"path": urllib.parse.unquote(uri_split.path)}

    query_end = uri_split.query.find(";")
    query_type = uri_split.query[:query_end]
    if query_end == -1 or "=" in query_type:
        raise ValueError("no query type, invalid XMPP URI")

    pairs = urllib.parse.parse_qs(uri_split.geturl())
    for k, v in list(pairs.items()):
        if len(v) != 1:
            raise NotImplementedError("multiple values not managed")
        if k in ("path", "type", "sub_type"):
            raise NotImplementedError("reserved key used in URI, this is not supported")
        data[k] = urllib.parse.unquote(v[0])

    if query_type:
        data["type"] = query_type
    elif "node" in data:
        data["type"] = "pubsub"
    else:
        data["type"] = ""

    if "node" in data:
        if data["node"].startswith("urn:xmpp:microblog:"):
            data["sub_type"] = "microblog"

    return data


def addPairs(uri, pairs):
    for k, v in pairs.items():
        uri.append(
            ";"
            + urllib.parse.quote_plus(k.encode("utf-8"))
            + "="
            + urllib.parse.quote_plus(v.encode("utf-8"))
        )


def buildXMPPUri(type_, **kwargs):
    uri = ["xmpp:"]
    subtype = kwargs.pop("subtype", None)
    path = kwargs.pop("path")
    uri.append(urllib.parse.quote_plus(path.encode("utf-8")).replace("%40", "@"))

    if type_ == "pubsub":
        if subtype == "microblog" and not kwargs.get("node"):
            kwargs["node"] = "urn:xmpp:microblog:0"
        if kwargs:
            uri.append("?")
            addPairs(uri, kwargs)
    else:
        raise NotImplementedError("{type_} URI are not handled yet".format(type_=type_))

    return "".join(uri)