libervia-backend: src/plugins/plugin_xep

annotate src/plugins/plugin_xep_0300.py @ 2105:c96fe007ca41

core(constants): added a constant for profile extension (PLUGIN_EXT): this constant may be modified if needed, which is the case on Android (it's modified by Cagou service's main.py), so platform detection is not needed anymore in sat_main.py.

author	Goffi <goffi@goffi.org>
date	Sun, 25 Dec 2016 16:43:56 +0100
parents	2daf7b4c6756
children	1d3f73e065e1

rev	line source
1934 2daf7b4c6756 use of /usr/bin/env instead of /usr/bin/python in shebang Goffi <goffi@goffi.org> parents: 1766 diff changeset	1 #!/usr/bin/env python2
1526 bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	2 # -- coding: utf-8 --
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)
1766 d17772b0fe22 copyright update Goffi <goffi@goffi.org> parents: 1618 diff changeset	5 # Copyright (C) 2009-2016 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 _
bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	21 from sat.core.log import getLogger
bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	22 log = getLogger(__name__)
1618 0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	23 from sat.core import exceptions
1526 bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	24 from twisted.words.xish import domish
1618 0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	25 from twisted.words.protocols.jabber.xmlstream import XMPPHandler
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	26 from twisted.internet import threads
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	27 from twisted.internet import defer
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	28 from zope.interface import implements
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	29 from wokkel import disco, iwokkel
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	30 from collections import OrderedDict
1526 bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	31 import hashlib
bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	32
bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	33
bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	34 PLUGIN_INFO = {
bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	35 "name": "Cryptographic Hash Functions",
bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	36 "import_name": "XEP-0300",
bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	37 "type": "XEP",
bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	38 "protocols": ["XEP-0300"],
bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	39 "main": "XEP_0300",
1618 0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	40 "handler": "yes",
1526 bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	41 "description": _("""Management of cryptographic hashes""")
bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	42 }
bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	43
1618 0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	44 NS_HASHES = "urn:xmpp:hashes:1"
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	45 NS_HASHES_FUNCTIONS = u"urn:xmpp:hash-function-text-names:{}"
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	46 BUFFER_SIZE = 2**12
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	47 ALGO_DEFAULT = 'sha-256'
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	48
1526 bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	49
bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	50 class XEP_0300(object):
1618 0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	51 ALGOS = OrderedDict((
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	52 (u'md5', hashlib.md5),
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	53 (u'sha-1', hashlib.sha1),
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	54 (u'sha-256', hashlib.sha256),
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	55 (u'sha-512', hashlib.sha512),
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	56 ))
1526 bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	57
bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	58 def __init__(self, host):
bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	59 log.info(_("plugin Hashes initialization"))
bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	60
1618 0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	61 def getHandler(self, profile):
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	62 return XEP_0300_handler()
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	63
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	64 def getHasher(self, algo):
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	65 """Return hasher instance
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	66
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	67 /!\\ blocking method, considere using calculateHashElt
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	68 if you want to hash a big file
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	69 @param algo(unicode): one of the XEP_300.ALGOS keys
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	70 @return (hash object): same object s in hashlib.
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	71 update method need to be called for each chunh
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	72 diget or hexdigest can be used at the end
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	73 """
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	74 return self.ALGOS[algo]()
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	75
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	76 @defer.inlineCallbacks
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	77 def getBestPeerAlgo(self, to_jid, profile):
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	78 """Return the best available hashing algorith of other peer
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 @param to_jid(jid.JID): peer jid
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	81 @parm profile: %(doc_profile)s
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	82 @return (D(unicode, None)): best available algorithm,
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	83 or None if hashing is not possible
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	84 """
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	85 for algo in reversed(XEP_0300.ALGOS):
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	86 has_feature = yield self.host.hasFeature(NS_HASHES_FUNCTIONS.format(algo), to_jid, profile)
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	87 if has_feature:
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	88 log.debug(u"Best hashing algorithm found for {jid}: {algo}".format(
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	89 jid=to_jid.full(),
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	90 algo=algo))
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	91 defer.returnValue(algo)
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	92
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	93 def calculateHashBlocking(self, file_obj, hasher):
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	94 """Calculate hash in a blocking way
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	95
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	96 @param file_obj(file): a file-like object
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	97 @param hasher(callable): the method to call to initialise hash object
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	98 @return (str): the hex digest of the hash
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	99 """
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	100 hash_ = hasher()
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	101 while True:
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	102 buf = file_obj.read(BUFFER_SIZE)
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	103 if not buf:
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	104 break
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	105 hash_.update(buf)
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	106 return hash_.hexdigest()
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	107
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	108 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	109 """Compute hash and build hash element
bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	110
1618 0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	111 @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	112 @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	113 @return (D(domish.Element)): hash element
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 def hashCalculated(hash_):
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	116 return self.buildHashElt(hash_, algo)
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	117 hasher = self.ALGOS[algo]
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	118 hash_d = threads.deferToThread(self.calculateHashBlocking, file_obj, hasher)
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	119 hash_d.addCallback(hashCalculated)
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	120 return hash_d
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	121
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	122 def buildHashElt(self, hash_=None, algo=ALGO_DEFAULT):
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	123 """Compute hash and build hash element
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	124
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	125 @param hash_(None, str): hash to use, or None for an empty element
1526 bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	126 @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	127 @return (domish.Element): computed hash
bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	128 """
bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	129 hash_elt = domish.Element((NS_HASHES, 'hash'))
1618 0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	130 if hash_ is not None:
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	131 hash_elt.addContent(hash_)
1526 bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	132 hash_elt['algo']=algo
bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	133 return hash_elt
bb451fd1cea3 plugin XEP-0300: hashes management first draft Goffi <goffi@goffi.org> parents: diff changeset	134
1618 0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	135 def parseHashElt(self, parent):
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	136 """Find and parse a hash element
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	137
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	138 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	139 @param (domish.Element): parent of <hash/> element
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	140 @return (tuple[unicode, str]): (algo, hash) tuple
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	141 both values can be None if <hash/> is empty
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	142 @raise exceptions.NotFound: the element is not present
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	143 """
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	144 algos = XEP_0300.ALGOS.keys()
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	145 hash_elt = None
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	146 best_algo = None
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	147 best_value = None
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	148 for hash_elt in parent.elements(NS_HASHES, 'hash'):
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	149 algo = hash_elt.getAttribute('algo')
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	150 try:
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	151 idx = algos.index(algo)
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	152 except ValueError:
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	153 log.warning(u"Proposed {} algorithm is not managed".format(algo))
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	154 algo = None
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	155 continue
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	156
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	157 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	158 best_algo = algo
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	159 best_value = str(hash_elt) or None
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	160
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	161 if not hash_elt:
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	162 raise exceptions.NotFound
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	163 return best_algo, best_value
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	164
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	165
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	166 class XEP_0300_handler(XMPPHandler):
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	167 implements(iwokkel.IDisco)
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	168
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	169 def getDiscoInfo(self, requestor, target, nodeIdentifier=''):
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	170 hash_functions_names = [disco.DiscoFeature(NS_HASHES_FUNCTIONS.format(algo)) for algo in XEP_0300.ALGOS]
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	171 return [disco.DiscoFeature(NS_HASHES)] + hash_functions_names
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	172
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	173 def getDiscoItems(self, requestor, target, nodeIdentifier=''):
0de5f210fe56 plugin XEP-0300: implemented hashing: Goffi <goffi@goffi.org> parents: 1526 diff changeset	174 return []

Mercurial > libervia-backend

annotate src/plugins/plugin_xep_0300.py @ 2105:c96fe007ca41