Mercurial > libervia-backend

annotate sat/plugins/plugin_xep_0300.py @ 3286:ddf3ded93b78

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
plugin XEP-0300; fixed use of calculateHash with getHasher
author Goffi <goffi@goffi.org>
date Fri, 29 May 2020 21:06:10 +0200
parents 559a625a236b
children be6d91572633
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
1 #!/usr/bin/env python3
3137
559a625a236b fixed shebangs
Goffi <goffi@goffi.org>
parents: 3136
diff changeset
2
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
3
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
4 # SAT plugin for Hash functions (XEP-0300)
3136
9d0df638c8b4 dates update
Goffi <goffi@goffi.org>
parents: 3040
diff changeset
5 # Copyright (C) 2009-2020 Jérôme Poisson (goffi@goffi.org)
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
6
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
7 # This program is free software: you can redistribute it and/or modify
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
8 # it under the terms of the GNU Affero General Public License as published by
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
9 # the Free Software Foundation, either version 3 of the License, or
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
10 # (at your option) any later version.
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
11
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
12 # This program is distributed in the hope that it will be useful,
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
15 # GNU Affero General Public License for more details.
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
16
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
17 # You should have received a copy of the GNU Affero General Public License
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
19
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
20 from sat.core.i18n import _
2145
33c8c4973743 core (plugins): added missing contants + use of new constants in PLUGIN_INFO
Goffi <goffi@goffi.org>
parents: 2144
diff changeset
21 from sat.core.constants import Const as C
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
22 from sat.core.log import getLogger
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
23
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
24 log = getLogger(__name__)
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
25 from sat.core import exceptions
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
26 from twisted.words.xish import domish
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
27 from twisted.words.protocols.jabber.xmlstream import XMPPHandler
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
28 from twisted.internet import threads
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
29 from twisted.internet import defer
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
30 from zope.interface import implementer
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
31 from wokkel import disco, iwokkel
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
32 from collections import OrderedDict
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
33 import hashlib
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
34 import base64
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
35
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
36
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
37 PLUGIN_INFO = {
2145
33c8c4973743 core (plugins): added missing contants + use of new constants in PLUGIN_INFO
Goffi <goffi@goffi.org>
parents: 2144
diff changeset
38 C.PI_NAME: "Cryptographic Hash Functions",
33c8c4973743 core (plugins): added missing contants + use of new constants in PLUGIN_INFO
Goffi <goffi@goffi.org>
parents: 2144
diff changeset
39 C.PI_IMPORT_NAME: "XEP-0300",
33c8c4973743 core (plugins): added missing contants + use of new constants in PLUGIN_INFO
Goffi <goffi@goffi.org>
parents: 2144
diff changeset
40 C.PI_TYPE: "XEP",
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
41 C.PI_MODES: C.PLUG_MODE_BOTH,
2145
33c8c4973743 core (plugins): added missing contants + use of new constants in PLUGIN_INFO
Goffi <goffi@goffi.org>
parents: 2144
diff changeset
42 C.PI_PROTOCOLS: ["XEP-0300"],
33c8c4973743 core (plugins): added missing contants + use of new constants in PLUGIN_INFO
Goffi <goffi@goffi.org>
parents: 2144
diff changeset
43 C.PI_MAIN: "XEP_0300",
33c8c4973743 core (plugins): added missing contants + use of new constants in PLUGIN_INFO
Goffi <goffi@goffi.org>
parents: 2144
diff changeset
44 C.PI_HANDLER: "yes",
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
45 C.PI_DESCRIPTION: _("""Management of cryptographic hashes"""),
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
46 }
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
47
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
48 NS_HASHES = "urn:xmpp:hashes:2"
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
49 NS_HASHES_FUNCTIONS = "urn:xmpp:hash-function-text-names:{}"
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
50 BUFFER_SIZE = 2 ** 12
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
51 ALGO_DEFAULT = "sha-256"
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
52
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
53
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
54 class XEP_0300(object):
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
55 # TODO: add blake after moving to Python 3
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
56 ALGOS = OrderedDict(
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
57 (
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
58 ("md5", hashlib.md5),
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
59 ("sha-1", hashlib.sha1),
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
60 ("sha-256", hashlib.sha256),
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
61 ("sha-512", hashlib.sha512),
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
62 )
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
63 )
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
64
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
65 def __init__(self, host):
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
66 log.info(_("plugin Hashes initialization"))
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
67 host.registerNamespace("hashes", NS_HASHES)
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
68
2144
1d3f73e065e1 core, jp: component handling + client handling refactoring:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
69 def getHandler(self, client):
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
70 return XEP_0300_handler()
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
71
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
72 def getHasher(self, algo=ALGO_DEFAULT):
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
73 """Return hasher instance
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
74
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
75 @param algo(unicode): one of the XEP_300.ALGOS keys
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
76 @return (hash object): same object s in hashlib.
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
77 update method need to be called for each chunh
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
78 diget or hexdigest can be used at the end
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
79 """
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
80 return self.ALGOS[algo]()
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
81
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
82 def getDefaultAlgo(self):
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
83 return ALGO_DEFAULT
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
84
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
85 @defer.inlineCallbacks
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
86 def getBestPeerAlgo(self, to_jid, profile):
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
87 """Return the best available hashing algorith of other peer
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
88
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
89 @param to_jid(jid.JID): peer jid
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
90 @parm profile: %(doc_profile)s
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
91 @return (D(unicode, None)): best available algorithm,
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
92 or None if hashing is not possible
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
93 """
2148
a543eda2c923 core (memory/disco): getInfos now handle node + use client instead of profile in many methods
Goffi <goffi@goffi.org>
parents: 2145
diff changeset
94 client = self.host.getClient(profile)
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
95 for algo in reversed(XEP_0300.ALGOS):
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
96 has_feature = yield self.host.hasFeature(
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
97 client, NS_HASHES_FUNCTIONS.format(algo), to_jid
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
98 )
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
99 if has_feature:
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
100 log.debug(
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
101 "Best hashing algorithm found for {jid}: {algo}".format(
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
102 jid=to_jid.full(), algo=algo
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
103 )
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
104 )
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
105 defer.returnValue(algo)
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
106
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
107 def _calculateHashBlocking(self, file_obj, hasher):
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
108 """Calculate hash in a blocking way
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
109
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
110 /!\\ blocking method, please use calculateHash instead
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
111 @param file_obj(file): a file-like object
3286
ddf3ded93b78 plugin XEP-0300; fixed use of calculateHash with getHasher
Goffi <goffi@goffi.org>
parents: 3137
diff changeset
112 @param hasher(hash object): the method to call to initialise hash object
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
113 @return (str): the hex digest of the hash
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
114 """
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
115 while True:
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
116 buf = file_obj.read(BUFFER_SIZE)
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
117 if not buf:
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
118 break
3286
ddf3ded93b78 plugin XEP-0300; fixed use of calculateHash with getHasher
Goffi <goffi@goffi.org>
parents: 3137
diff changeset
119 hasher.update(buf)
ddf3ded93b78 plugin XEP-0300; fixed use of calculateHash with getHasher
Goffi <goffi@goffi.org>
parents: 3137
diff changeset
120 return hasher.hexdigest()
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
121
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
122 def calculateHash(self, file_obj, hasher):
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
123 return threads.deferToThread(self._calculateHashBlocking, file_obj, hasher)
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
124
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
125 def calculateHashElt(self, file_obj=None, algo=ALGO_DEFAULT):
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
126 """Compute hash and build hash element
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
127
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
128 @param file_obj(file, None): file-like object to use to calculate the hash
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
129 @param algo(unicode): algorithme to use, must be a key of XEP_0300.ALGOS
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
130 @return (D(domish.Element)): hash element
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
131 """
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
132
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
133 def hashCalculated(hash_):
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
134 return self.buildHashElt(hash_, algo)
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
135
3286
ddf3ded93b78 plugin XEP-0300; fixed use of calculateHash with getHasher
Goffi <goffi@goffi.org>
parents: 3137
diff changeset
136 hasher = self.getHasher(algo)
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
137 hash_d = self.calculateHash(file_obj, hasher)
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
138 hash_d.addCallback(hashCalculated)
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
139 return hash_d
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
140
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
141 def buildHashUsedElt(self, algo=ALGO_DEFAULT):
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
142 hash_used_elt = domish.Element((NS_HASHES, "hash-used"))
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
143 hash_used_elt["algo"] = algo
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
144 return hash_used_elt
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
145
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
146 def parseHashUsedElt(self, parent):
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
147 """Find and parse a hash-used element
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
148
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
149 @param (domish.Element): parent of <hash/> element
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
150 @return (unicode): hash algorithm used
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
151 @raise exceptions.NotFound: the element is not present
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
152 @raise exceptions.DataError: the element is invalid
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
153 """
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
154 try:
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
155 hash_used_elt = next(parent.elements(NS_HASHES, "hash-used"))
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
156 except StopIteration:
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
157 raise exceptions.NotFound
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
158 algo = hash_used_elt["algo"]
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
159 if not algo:
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
160 raise exceptions.DataError
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
161 return algo
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
162
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
163 def buildHashElt(self, hash_, algo=ALGO_DEFAULT):
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
164 """Compute hash and build hash element
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
165
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
166 @param hash_(str): hash to use
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
167 @param algo(unicode): algorithme to use, must be a key of XEP_0300.ALGOS
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
168 @return (domish.Element): computed hash
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
169 """
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
170 assert hash_
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
171 assert algo
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
172 hash_elt = domish.Element((NS_HASHES, "hash"))
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
173 if hash_ is not None:
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
174 b64_hash = base64.b64encode(hash_.encode('utf-8')).decode('utf-8')
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
175 hash_elt.addContent(b64_hash)
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
176 hash_elt["algo"] = algo
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
177 return hash_elt
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
178
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
179 def parseHashElt(self, parent):
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
180 """Find and parse a hash element
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
181
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
182 if multiple elements are found, the strongest managed one is returned
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
183 @param (domish.Element): parent of <hash/> element
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
184 @return (tuple[str, bytes]): (algo, hash) tuple
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
185 both values can be None if <hash/> is empty
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
186 @raise exceptions.NotFound: the element is not present
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
187 @raise exceptions.DataError: the element is invalid
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
188 """
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
189 algos = list(XEP_0300.ALGOS.keys())
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
190 hash_elt = None
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
191 best_algo = None
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
192 best_value = None
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
193 for hash_elt in parent.elements(NS_HASHES, "hash"):
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
194 algo = hash_elt.getAttribute("algo")
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
195 try:
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
196 idx = algos.index(algo)
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
197 except ValueError:
3040
fee60f17ebac jp: jp asyncio port:
Goffi <goffi@goffi.org>
parents: 3028
diff changeset
198 log.warning(f"Proposed {algo} algorithm is not managed")
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
199 algo = None
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
200 continue
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
201
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
202 if best_algo is None or algos.index(best_algo) < idx:
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
203 best_algo = algo
3040
fee60f17ebac jp: jp asyncio port:
Goffi <goffi@goffi.org>
parents: 3028
diff changeset
204 best_value = base64.b64decode(str(hash_elt)).decode('utf-8')
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
205
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
206 if not hash_elt:
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
207 raise exceptions.NotFound
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
208 if not best_algo or not best_value:
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
209 raise exceptions.DataError
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
210 return best_algo, best_value
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
211
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
212
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
213 @implementer(iwokkel.IDisco)
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
214 class XEP_0300_handler(XMPPHandler):
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
215
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
216 def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
217 hash_functions_names = [
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
218 disco.DiscoFeature(NS_HASHES_FUNCTIONS.format(algo))
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
219 for algo in XEP_0300.ALGOS
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
220 ]
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
221 return [disco.DiscoFeature(NS_HASHES)] + hash_functions_names
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
222
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
223 def getDiscoItems(self, requestor, target, nodeIdentifier=""):
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
224 return []