Mercurial > libervia-backend
changeset 1526:bb451fd1cea3
plugin XEP-0300: hashes management first draft
author | Goffi <goffi@goffi.org> |
---|---|
date | Fri, 25 Sep 2015 19:19:12 +0200 (2015-09-25) |
parents | 49d33cb48207 |
children | bfef1934a8f3 |
files | src/plugins/plugin_xep_0300.py |
diffstat | 1 files changed, 63 insertions(+), 0 deletions(-) [+] |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/plugins/plugin_xep_0300.py Fri Sep 25 19:19:12 2015 +0200 @@ -0,0 +1,63 @@ +#!/usr/bin/python +# -*- coding: utf-8 -*- + +# SAT plugin for Hash functions (XEP-0300) +# Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015 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/>. + +from sat.core.i18n import _ +from sat.core.log import getLogger +log = getLogger(__name__) +from twisted.words.xish import domish +import hashlib + + +NS_HASHES = "urn:xmpp:hashes:1" + +PLUGIN_INFO = { + "name": "Cryptographic Hash Functions", + "import_name": "XEP-0300", + "type": "XEP", + "protocols": ["XEP-0300"], + "main": "XEP_0300", + "handler": "no", + "description": _("""Management of cryptographic hashes""") +} + + +class XEP_0300(object): + ALGOS = {u'md5': hashlib.md5, + u'sha-1': hashlib.sha1, + u'sha-256': hashlib.sha256, + u'sha-512': hashlib.sha512, + } + + def __init__(self, host): + log.info(_("plugin Hashes initialization")) + + def buidHash(self, file_obj=None, algo='sha-256'): + """Compute hash and build hash element + + @param file_obj(file, None): file to use to calculate the hash + if file_obj is None, en empty hash element will be returned (useful e.g. in XEP-0234) + @param algo(unicode): algorithme to use, must be a key of XEP_0300.ALGOS + @return (domish.Element): computed hash + """ + hasher = self.ALGOS[algo] + hash_elt = domish.Element((NS_HASHES, 'hash')) + hash_elt['algo']=algo + # TODO: actually hash, use deferToThread + return hash_elt +