Mercurial > libervia-backend
view src/plugins/plugin_exp_pipe.py @ 1618:0de5f210fe56
plugin XEP-0300: implemented hashing:
- parseHashElt do what it says
- calculateHashElt can calculate a whole hash in a non-blocking way
- or getHasher can be used for progressive hashing
- getBestPeerAlgo return the best available hashing algorithm of an entity
author | Goffi <goffi@goffi.org> |
---|---|
date | Tue, 17 Nov 2015 19:48:19 +0100 |
parents | 3265a2639182 |
children | 697effba0310 |
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#!/usr/bin/python # -*- coding: utf-8 -*- # SAT plugin for managing pipes (experimental) # 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.constants import Const as C from sat.core.log import getLogger log = getLogger(__name__) from twisted.words.xish import domish from twisted.words.protocols.jabber import jid from twisted.words.protocols import jabber from twisted.internet import reactor from wokkel import data_form IQ_SET = '/iq[@type="set"]' PROFILE_NAME = "pipe-transfer" PROFILE = "http://jabber.org/protocol/si/profile/" + PROFILE_NAME PLUGIN_INFO = { "name": "Pipe Plugin", "import_name": "EXP-PIPE", "type": "EXP", "protocols": ["EXP-PIPE"], "dependencies": ["XEP-0020", "XEP-0095", "XEP-0065", "XEP-0047"], "main": "Exp_Pipe", "handler": "no", "description": _("""Implementation of SI Pipe Transfer""") } class Exp_Pipe(object): """This is a modified version of XEP-0096 to work with named pipes instead of files""" def __init__(self, host): log.info(_("Plugin Pipe initialization")) self.host = host self.managed_stream_m = [self.host.plugins["XEP-0065"].NAMESPACE, self.host.plugins["XEP-0047"].NAMESPACE] # Stream methods managed self.host.plugins["XEP-0095"].registerSIProfile(PROFILE_NAME, self.transferRequest) host.bridge.addMethod("pipeOut", ".plugin", in_sign='ssa{ss}s', out_sign='s', method=self.pipeOut) def profileConnected(self, profile): client = self.host.getClient(profile) client._pipe_waiting_for_approval = {} # key = id, value = [transfer data, IdelayedCall Reactor timeout, # current stream method, [failed stream methods], profile] def _kill_id(self, approval_id, profile): """Delete a waiting_for_approval id, called after timeout @param approval_id: id of _pipe_waiting_for_approval""" log.info(_("SI Pipe Transfer: TimeOut reached for id %s") % approval_id) try: client = self.host.getClient(profile) del client._pipe_waiting_for_approval[approval_id] except KeyError: log.warning(_(u"kill id called on a non existant approval id")) def transferRequest(self, iq_id, from_jid, si_id, si_mime_type, si_el, profile): """Called when a pipe transfer is requested @param iq_id: id of the iq request @param from_jid: jid of the sender @param si_id: Stream Initiation session id @param si_mime_type: Mime type of the pipe (or default "application/octet-stream" if unknown) @param si_el: domish.Element of the request @param profile: %(doc_profile)s""" log.info(_("EXP-PIPE file transfer requested")) log.debug(si_el.toXml()) client = self.host.getClient(profile) pipe_elts = filter(lambda elt: elt.name == 'pipe', si_el.elements()) feature_elts = self.host.plugins["XEP-0020"].getFeatureElt(si_el) if not pipe_elts: log.warning(_(u"No pipe element found")) self.host.plugins["XEP-0095"].sendBadRequestError(iq_id, from_jid, profile) return if feature_elts: feature_el = feature_elts[0] data_form.Form.fromElement(feature_el.firstChildElement()) try: stream_method = self.host.plugins["XEP-0020"].negociate(feature_el, 'stream-method', self.managed_stream_m) except KeyError: log.warning(_(u"No stream method found")) self.host.plugins["XEP-0095"].sendBadRequestError(iq_id, from_jid, profile) return if not stream_method: log.warning(_(u"Can't find a valid stream method")) self.host.plugins["XEP-0095"].sendFailedError(iq_id, from_jid, profile) return else: log.warning(_(u"No feature element found")) self.host.plugins["XEP-0095"].sendBadRequestError(iq_id, from_jid, profile) return #if we are here, the transfer can start, we just need user's agreement data = {"id": iq_id, "from": from_jid} client._pipe_waiting_for_approval[si_id] = [data, reactor.callLater(300, self._kill_id, si_id), stream_method, [], profile] self.host.askConfirmation(si_id, "PIPE_TRANSFER", data, self.confirmationCB, profile) def confirmationCB(self, sid, accepted, frontend_data, profile): """Called on confirmation answer @param sid: file transfer session id @param accepted: True if file transfer is accepted @param frontend_data: data sent by frontend""" client = self.host.getClient(profile) data, timeout, stream_method, failed_methods, profile = client._pipe_waiting_for_approval[sid] if accepted: if timeout.active(): timeout.cancel() try: dest_path = frontend_data['dest_path'] except KeyError: log.error(_(u'dest path not found in frontend_data')) del(client._pipe_waiting_for_approval[sid]) return if stream_method == self.host.plugins["XEP-0065"].NAMESPACE: file_obj = open(dest_path, 'w+') self.host.plugins["XEP-0065"].prepareToReceive(jid.JID(data['from']), sid, file_obj, None, self._transferSucceeded, self._transferFailed, profile) elif stream_method == self.host.plugins["XEP-0047"].NAMESPACE: file_obj = open(dest_path, 'w+') self.host.plugins["XEP-0047"].prepareToReceive(jid.JID(data['from']), sid, file_obj, None, self._transferSucceeded, self._transferFailed, profile) else: log.error(_(u"Unknown stream method, this should not happen at this stage, cancelling transfer")) del(client._pipe_waiting_for_approval[sid]) return #we can send the iq result feature_elt = self.host.plugins["XEP-0020"].chooseOption({'stream-method': stream_method}) misc_elts = [] misc_elts.append(domish.Element((PROFILE, "file"))) self.host.plugins["XEP-0095"].acceptStream(data["id"], data['from'], feature_elt, misc_elts, profile) else: log.debug(_(u"Transfer [%s] refused"), sid) self.host.plugins["XEP-0095"].sendRejectedError(data["id"], data['from'], profile=profile) del(client._pipe_waiting_for_approval[sid]) def _transferSucceeded(self, sid, file_obj, stream_method, profile): """Called by the stream method when transfer successfuly finished @param id: stream id""" client = self.host.getClient(profile) file_obj.close() log.info(_('Transfer %s successfuly finished') % sid) del(client._pipe_waiting_for_approval[sid]) def _transferFailed(self, sid, file_obj, stream_method, reason, profile): """Called when something went wrong with the transfer @param id: stream id @param reason: can be TIMEOUT, IO_ERROR, PROTOCOL_ERROR""" client = self.host.getClient(profile) data, timeout, stream_method, failed_methods, profile = client._pipe_waiting_for_approval[sid] log.warning(_(u'Transfer %(id)s failed with stream method %(s_method)s') % {'id': sid, 's_method': stream_method}) # filepath = file_obj.name file_obj.close() #TODO: session remenber (within a time limit) when a stream method fail, and avoid that stream method with full jid for the rest of the session log.warning(_(u"All stream methods failed, can't transfer the file")) del(client._pipe_waiting_for_approval[sid]) def pipeCb(self, filepath, sid, profile, IQ): if IQ['type'] == "error": stanza_err = jabber.error.exceptionFromStanza(IQ) if stanza_err.code == '403' and stanza_err.condition == 'forbidden': log.debug(_(u"Pipe transfer refused by %s") % IQ['from']) self.host.bridge.newAlert(_("The contact %s refused your pipe stream") % IQ['from'], _("Pipe stream refused"), "INFO", profile) else: log.warning(_(u"Error during pipe stream transfer with %s") % IQ['from']) self.host.bridge.newAlert(_("Something went wrong during the pipe stream session intialisation with %s") % IQ['from'], _("Pipe stream error"), "ERROR", profile) return si_elt = IQ.firstChildElement() if IQ['type'] != "result" or not si_elt or si_elt.name != "si": log.error(_(u"Protocol error during file transfer")) return feature_elts = self.host.plugins["XEP-0020"].getFeatureElt(si_elt) if not feature_elts: log.warning(_(u"No feature element")) return choosed_options = self.host.plugins["XEP-0020"].getChoosedOptions(feature_elts[0]) try: stream_method = choosed_options["stream-method"] except KeyError: log.warning(_(u"No stream method choosed")) return if stream_method == self.host.plugins["XEP-0065"].NAMESPACE: #fd = os.open(filepath, os.O_RDONLY | os.O_NONBLOCK) #XXX: non blocking openingl cause issues with XEP-0065's FileSender #file_obj = os.fdopen(fd, 'r') file_obj = open(filepath, 'r') # XXX: we have to be sure that filepath is well opened, as reading can block it self.host.plugins["XEP-0065"].startStream(file_obj, jid.JID(IQ['from']), sid, None, self.sendSuccessCb, self.sendFailureCb, None, profile) elif stream_method == self.host.plugins["XEP-0047"].NAMESPACE: #fd = os.open(filepath, os.O_RDONLY | os.O_NONBLOCK) #XXX: non blocking openingl cause issues with XEP-0065's FileSender #file_obj = os.fdopen(fd, 'r') file_obj = open(filepath, 'r') # XXX: we have to be sure that filepath is well opened, as reading can block it self.host.plugins["XEP-0047"].startStream(file_obj, jid.JID(IQ['from']), sid, None, self.sendSuccessCb, self.sendFailureCb, None, profile) else: log.warning(_(u"Invalid stream method received")) def pipeOut(self, to_jid, filepath, data={}, profile_key=C.PROF_KEY_NONE): """send a file using EXP-PIPE @to_jid: recipient @filepath: absolute path to the named pipe to send @data: dictionnary with the optional data @param profile_key: %(doc_profile_key)s @return: an unique id to identify the transfer """ profile = self.host.memory.getProfileName(profile_key) if not profile: log.warning(_(u"Trying to send a file from an unknown profile")) return "" feature_elt = self.host.plugins["XEP-0020"].proposeFeatures({'stream-method': self.managed_stream_m}) pipe_transfer_elts = [] pipe_elt = domish.Element((PROFILE, 'pipe')) pipe_transfer_elts.append(pipe_elt) sid, offer = self.host.plugins["XEP-0095"].proposeStream(jid.JID(to_jid), PROFILE, feature_elt, pipe_transfer_elts, profile_key=profile) offer.addCallback(self.pipeCb, filepath, sid, profile) return sid def sendSuccessCb(self, sid, file_obj, stream_method, profile): log.info(_('Transfer %s successfuly finished') % sid) file_obj.close() def sendFailureCb(self, sid, file_obj, stream_method, reason, profile): file_obj.close() log.warning(_(u'Transfer %(id)s failed with stream method %(s_method)s %(profile)s') % {'id': sid, "s_method": stream_method, "profile": profile})