Mercurial > libervia-backend

comparison libervia/backend/plugins/plugin_xep_0103.py @ 4071:4b842c1fb686

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refactoring: renamed `sat` package to `libervia.backend`
author Goffi <goffi@goffi.org>
date Fri, 02 Jun 2023 11:49:51 +0200
parents sat/plugins/plugin_xep_0103.py@524856bd7b19
children
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4070:d10748475025 4071:4b842c1fb686
1 #!/usr/bin/env python3
2
3 # Copyright (C) 2009-2022 Jérôme Poisson (goffi@goffi.org)
4
5 # This program is free software: you can redistribute it and/or modify
6 # it under the terms of the GNU Affero General Public License as published by
7 # the Free Software Foundation, either version 3 of the License, or
8 # (at your option) any later version.
9
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU Affero General Public License for more details.
14
15 # You should have received a copy of the GNU Affero General Public License
16 # along with this program. If not, see <http://www.gnu.org/licenses/>.
17
18 from typing import Dict, Any
19
20 from twisted.words.xish import domish
21
22 from libervia.backend.core.constants import Const as C
23 from libervia.backend.core.i18n import _
24 from libervia.backend.core.log import getLogger
25 from libervia.backend.core import exceptions
26
27 log = getLogger(__name__)
28
29
30 PLUGIN_INFO = {
31 C.PI_NAME: "URL Address Information",
32 C.PI_IMPORT_NAME: "XEP-0103",
33 C.PI_TYPE: "XEP",
34 C.PI_MODES: C.PLUG_MODE_BOTH,
35 C.PI_PROTOCOLS: ["XEP-0103"],
36 C.PI_MAIN: "XEP_0103",
37 C.PI_HANDLER: "no",
38 C.PI_DESCRIPTION: _("""Implementation of XEP-0103 (URL Address Information)"""),
39 }
40
41 NS_URL_DATA = "http://jabber.org/protocol/url-data"
42
43
44 class XEP_0103:
45 namespace = NS_URL_DATA
46
47 def __init__(self, host):
48 log.info(_("XEP-0103 (URL Address Information) plugin initialization"))
49 host.register_namespace("url-data", NS_URL_DATA)
50
51 def get_url_data_elt(
52 self,
53 url: str,
54 **kwargs
55 ) -> domish.Element:
56 """Generate the element describing the URL
57
58 @param url: URL to use
59 @param extra: extra metadata describing how to access the URL
60 @return: ``<url-data/>`` element
61 """
62 url_data_elt = domish.Element((NS_URL_DATA, "url-data"))
63 url_data_elt["target"] = url
64 return url_data_elt
65
66 def parse_url_data_elt(
67 self,
68 url_data_elt: domish.Element
69 ) -> Dict[str, Any]:
70 """Parse <url-data/> element
71
72 @param url_data_elt: <url-data/> element
73 a parent element can also be used
74 @return: url-data data. It's a dict whose keys correspond to
75 [get_url_data_elt] parameters
76 @raise exceptions.NotFound: no <url-data/> element has been found
77 """
78 if url_data_elt.name != "url-data":
79 try:
80 url_data_elt = next(
81 url_data_elt.elements(NS_URL_DATA, "url-data")
82 )
83 except StopIteration:
84 raise exceptions.NotFound
85 try:
86 data: Dict[str, Any] = {"url": url_data_elt["target"]}
87 except KeyError:
88 raise ValueError(f'"target" attribute is missing: {url_data_elt.toXml}')
89
90 return data