gajim-plural/src/common/connection.py

##	common/connection.py
##
## Gajim Team:
##	- Yann Le Boulanger <asterix@lagaule.org>
##	- Vincent Hanquez <tab@snarc.org>
##	- Nikos Kouremenos <nkour@jabber.org>
##
##	Copyright (C) 2003-2005 Gajim Team
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published
## by the Free Software Foundation; version 2 only.
##
## 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 General Public License for more details.
##

import sys
import os
import time
import sre
from calendar import timegm

import common.xmpp

from common import gajim
from common import GnuPG
USE_GPG = GnuPG.USE_GPG

from common import i18n
_ = i18n._


STATUS_LIST = ['offline', 'connecting', 'online', 'chat', 'away', 'xa', 'dnd',
	'invisible']

distro_info = {
	'Arch Linux': '/etc/arch-release',
	'Aurox Linux': '/etc/aurox-release',
	'Conectiva Linux': '/etc/conectiva-release',
	'Debian GNU/Linux': '/etc/debian_release',
	'Debian GNU/Linux': '/etc/debian_version',
	'Fedora Linux': '/etc/fedora-release',
	'Gentoo Linux': '/etc/gentoo-release',
	'Linux from Scratch': '/etc/lfs-release',
	'Mandrake Linux': '/etc/mandrake-release',
	'Slackware Linux': '/etc/slackware-release',
	'Slackware Linux': '/etc/slackware-version',
	'Solaris/Sparc': '/etc/release',
	'SUSE Linux': '/etc/SuSE-release',
	'Sun JDS': '/etc/sun-release',
	'PLD Linux': '/etc/pld-release',
	'Yellow Dog Linux': '/etc/yellowdog-release',
	# many distros use the /etc/redhat-release for compatibility
	# so Redhat is the last
	'Redhat Linux': '/etc/redhat-release'
}

def get_os_info():
	if os.name == 'nt':
		win_version = {
			(1, 4, 0): '95',
			(1, 4, 10): '98',
			(1, 4, 90): 'ME',
			(2, 4, 0): 'NT',
			(2, 5, 0): '2000',
			(2, 5, 1): 'XP'
		}[	os.sys.getwindowsversion()[3],
			os.sys.getwindowsversion()[0],
			os.sys.getwindowsversion()[1] ]
		return 'Windows' + ' ' + win_version
	elif os.name == 'posix':
		executable = 'lsb_release'
		params = ' --id --codename --release --short'
		for path in os.environ['PATH'].split(':'):
			full_path_to_executable = os.path.join(path, executable)
			if os.path.exists(full_path_to_executable):
				command = executable + params
				child_stdin, child_stdout = os.popen2(command)
				output = child_stdout.readline().strip()
				child_stdout.close()
				child_stdin.close()
				# some distros put n/a in places so remove them
				pattern = sre.compile(r' n/a', sre.IGNORE_CASE)
				output = sre.sub(pattern, '', output)
				return output
		# lsb_release executable not available, so parse files
		for distro_name in distro_info:
			path_to_file = distro_info[distro_name]
			if os.path.exists(path_to_file):
				fd = open(path_to_file)
				text = fd.read().strip()
				fd.close()
				if path_to_file.endswith('version'):
					text = distro_name + ' ' + text
				elif path_to_file.endswith('aurox-release'): # file doesn't have version
					text = distro_name
				elif path_to_file.endswith('lfs-release'): # file just has version
					text = distro_name + ' ' + text
				return text
	return 'N/A'

class Connection:
	"""Connection class"""
	def __init__(self, name):
		# dict of function to be calledfor each event
		self.handlers = {'ROSTER': [], 'WARNING': [], 'ERROR': [], 'STATUS': [],
			'NOTIFY': [], 'MSG': [], 'MSGERROR': [], 'MSGSENT': [] ,
			'SUBSCRIBED': [], 'UNSUBSCRIBED': [], 'SUBSCRIBE': [],
			'AGENT_INFO': [], 'REGISTER_AGENT_INFO': [], 'AGENT_INFO_ITEMS': [],
			'AGENT_INFO_INFO': [], 'QUIT': [], 'ACC_OK': [], 'MYVCARD': [],
			'OS_INFO': [], 'VCARD': [], 'GC_MSG': [], 'GC_SUBJECT': [],
			'GC_CONFIG': [], 'BAD_PASSPHRASE': [], 'ROSTER_INFO': [],
			'ERROR_ANSWER': []}
		self.name = name
		self.connected = 0 # offline
		self.connection = None # xmpppy instance
		self.gpg = None
		self.status = ''
		self.myVCardID = []
		self.password = gajim.config.get_per('accounts', name, 'password')
		if USE_GPG:
			self.gpg = GnuPG.GnuPG()
			gajim.config.set('usegpg', True)
		else:
			gajim.config.set('usegpg', False)
	# END __init__

	def dispatch(self, event, data):
		if not event in self.handlers:
			return
		for handler in self.handlers[event]:
			handler(self.name, data)

	def _discover(self, ns, jid, node = None): #FIXME: this is in features.py but it is blocking
		iq = common.xmpp.Iq(typ = 'get', to = jid, queryNS = ns)
		if node:
			iq.setQuerynode(node)
		self.connection.send(iq)

	def discoverItems(self, jid, node = None):
		'''According to JEP-0030: jid is mandatory, 
											name, node, action is optional.'''
		self._discover(common.xmpp.NS_DISCO_ITEMS, jid, node)
	
	def discoverInfo(self, jid, node = None):
		'''According to JEP-0030:
			For identity: category, name is mandatory, type is optional.
			For feature: var is mandatory'''
		self._discover(common.xmpp.NS_DISCO_INFO, jid, node)

	def _vCardCB(self, con, vc):
		"""Called when we recieve a vCard
		Parse the vCard and send it to plugins"""
		vcard = {'jid': vc.getFrom().getStripped()}
		if vc.getTag('vCard').getNamespace() == common.xmpp.NS_VCARD:
			card = vc.getChildren()[0]
			for info in card.getChildren():
				if info.getChildren() == []:
					vcard[info.getName()] = info.getData()
				else:
					vcard[info.getName()] = {}
					for c in info.getChildren():
						 vcard[info.getName()][c.getName()] = c.getData()
			if vc.getID() in self.myVCardID:
				self.myVCardID.remove(vc.getID())
				self.dispatch('MYVCARD', vcard)
			else:
				self.dispatch('VCARD', vcard)


	def _messageCB(self, con, msg):
		"""Called when we recieve a message"""
		mtype = msg.getType()
		tim = msg.getTimestamp()
		tim = time.strptime(tim, '%Y%m%dT%H:%M:%S')
		tim = time.localtime(timegm(tim))
		msgtxt = msg.getBody()
		xtags = msg.getTags('x')
		encTag = None
		decmsg = ''
		for xtag in xtags:
			if xtag.getNamespace() == common.xmpp.NS_ENCRYPTED:
				encTag = xtag
				break
		if encTag and USE_GPG:
			#decrypt
			encmsg = encTag.getData()
			
			keyID = gajim.config.get_per('accounts', self.name, 'keyid')
			if keyID:
				decmsg = self.gpg.decrypt(encmsg, keyID)
		if decmsg:
			msgtxt = decmsg
		if mtype == 'error':
			self.dispatch('MSGERROR', (str(msg.getFrom()), \
				msg.getErrorCode(), msg.getError(), msgtxt, tim))
		elif mtype == 'groupchat':
			subject = msg.getSubject()
			if subject:
				self.dispatch('GC_SUBJECT', (str(msg.getFrom()), subject))
			else:
				self.dispatch('GC_MSG', (str(msg.getFrom()), msgtxt, tim))
				gajim.logger.write('gc', msgtxt, str(msg.getFrom()), tim = tim)
		else:
			gajim.logger.write('incoming', msgtxt, str(msg.getFrom()), tim = tim)
			self.dispatch('MSG', (str(msg.getFrom()), msgtxt, tim))
	# END messageCB

	def _presenceCB(self, con, prs):
		"""Called when we recieve a presence"""
#		if prs.getXNode(common.xmpp.NS_DELAY): return
		who = str(prs.getFrom())
		prio = prs.getPriority()
		if not prio:
			prio = 0
		ptype = prs.getType()
		if ptype == None: ptype = 'available'
		gajim.log.debug('PresenceCB : %s' % ptype)
		xtags = prs.getTags('x')
		sigTag = None
		keyID = ''
		status = prs.getStatus()
		for xtag in xtags:
			if xtag.getNamespace() == common.xmpp.NS_SIGNED:
				sigTag = xtag
				break
		if sigTag and USE_GPG:
			#verify
			sigmsg = sigTag.getData()
			keyID = self.gpg.verify(status, sigmsg)
		if ptype == 'available':
			show = prs.getShow()
			if not show:
				show = 'online'
		elif ptype == 'unavailable':
			show = 'offline'
		elif ptype == 'subscribe':
			gajim.log.debug('subscribe request from %s' % who)
			if gajim.config.get('alwaysauth') or who.find("@") <= 0:
				if self.connection:
					self.connection.send(common.xmpp.Presence(who, 'subscribed'))
				if who.find("@") <= 0:
					self.dispatch('NOTIFY', (prs.getFrom().getStripped(), \
						'offline', 'offline', prs.getFrom().getResource(), prio, \
						keyID, None, None, None, None, None, None))
			else:
				if not status:
					status = _('I would like to add you to my roster.')
				self.dispatch('SUBSCRIBE', (who, status))
		elif ptype == 'subscribed':
			jid = prs.getFrom()
			self.dispatch('SUBSCRIBED', (jid.getStripped(), jid.getResource()))
			self.dispatch('UPDUSER', (jid.getStripped(), jid.getNode(), \
				['General']))
			#BE CAREFUL : no con.updateRosterItem() in a callback
			gajim.log.debug('we are now subscribed to %s' % who)
		elif ptype == 'unsubscribe':
			gajim.log.debug('unsubscribe request from %s' % who)
		elif ptype == 'unsubscribed':
			gajim.log.debug('we are now unsubscribed to %s' % who)
			self.dispatch('UNSUBSCRIBED', prs.getFrom().getStripped())
		elif ptype == 'error':
			errmsg = prs.getError()
			errcode = prs.getErrorCode()
			if errcode == '409':	#conflict :	Nick Conflict
				self.dispatch('ERROR', errmsg)
			else:
				self.dispatch('ERROR_ANSWER', (prs.getFrom().getStripped(), errmsg,
																					errcode))
		if ptype == 'available' or ptype == 'unavailable':
			gajim.logger.write('status', status, prs.getFrom().getStripped(), show)
			self.dispatch('NOTIFY', (prs.getFrom().getStripped(), show, status, \
				prs.getFrom().getResource(), prio, keyID, prs.getRole(), \
				prs.getAffiliation(), prs.getJid(), prs.getReason(), \
				prs.getActor(), prs.getStatusCode()))
	# END presenceCB

	def _disconnectedCB(self):
		"""Called when we are disconnected"""
		gajim.log.debug('disconnectedCB')
		if self.connection:
			self.connected = 0
			self.dispatch('STATUS', 'offline')
			self.connection = None
	# END disconenctedCB

	def _rosterSetCB(self, con, iq_obj):
		gajim.log.debug('rosterSetCB')
		for item in iq_obj.getTag('query').getChildren():
			jid  = item.getAttr('jid')
			name = item.getAttr('name')
			sub  = item.getAttr('subscription')
			ask  = item.getAttr('ask')
			groups = []
			for group in item.getTags('group'):
				groups.append(group.getData())
			self.dispatch('ROSTER_INFO', (jid, name, sub, ask, groups))
		raise common.xmpp.NodeProcessed

	def _BrowseResultCB(self, con, iq_obj):
		gajim.log.debug('BrowseResultCB')
		identities, features, items = [], [], []
		for q in iq_obj.getChildren():
			if q.getNamespace() != common.xmpp.NS_BROWSE:
				continue
			attr = {}
			for key in q.getAttrs().keys():
				attr[key.encode('utf8')] = q.getAttr(key).encode('utf8')
			identities = [attr]
			for node in q.getChildren():
				if node.getName() == 'ns':
					features.append(node.getData())
				else:
					infos = {}
					for key in node.getAttrs().keys():
						infos[key.encode('utf8')] = node.getAttr(key).encode('utf8')
					infos['category'] = node.getName()
					items.append(infos)
			jid = str(iq_obj.getFrom())
			self.dispatch('AGENT_INFO', (jid, identities, features, items))

	def _DiscoverItemsCB(self, con, iq_obj):
		gajim.log.debug('DiscoverItemsCB')
		q = iq_obj.getTag('query')
		node = q.getAttr('node')
		if not node:
			node = ''
		qp = iq_obj.getQueryPayload()
		items = []
		if not qp:
			qp = []
		for i in qp:
			attr = {}
			for key in i.getAttrs():
				attr[key.encode('utf8')] = i.getAttrs()[key].encode('utf8')
			items.append(attr)
		jid = str(iq_obj.getFrom())
		self.dispatch('AGENT_INFO_ITEMS', (jid, node, items))

	def _DiscoverInfoErrorCB(self, con, iq_obj):
		gajim.log.debug('DiscoverInfoErrorCB')
		iq = common.xmpp.Iq(to = iq_obj.getFrom(), typ = 'get', queryNS =\
			common.xmpp.NS_AGENTS)
		con.send(iq)

	def _DiscoverInfoCB(self, con, iq_obj):
		gajim.log.debug('DiscoverInfoCB')
		# According to JEP-0030:
		# For identity: category, name is mandatory, type is optional.
		# For feature: var is mandatory
		identities, features = [], []
		q = iq_obj.getTag('query')
		node = q.getAttr('node')
		if not node:
			node = ''
		qc = iq_obj.getQueryChildren()
		if not qc:
			qc = []
		for i in qc:
			if i.getName() == 'identity':
				attr = {}
				for key in i.getAttrs().keys():
					attr[key.encode('utf8')] = i.getAttr(key).encode('utf8')
				identities.append(attr)
			elif i.getName() == 'feature':
				features.append(i.getAttr('var'))
		jid = str(iq_obj.getFrom())
		if not identities:
			self.connection.send(common.xmpp.Iq(typ = 'get', queryNS = \
				common.xmpp.NS_AGENTS))
		else:
			self.dispatch('AGENT_INFO_INFO', (jid, node, identities, features))
			self.discoverItems(jid, node)

	def _VersionCB(self, con, iq_obj):
		gajim.log.debug('VersionCB')
		iq_obj = iq_obj.buildReply('result')
		qp = iq_obj.getTag('query')
		qp.setTagData('name', 'Gajim')
		qp.setTagData('version', gajim.version)
		send_os = gajim.config.get('send_os_info')
		if send_os:
			qp.setTagData('os', get_os_info())
		con.send(iq_obj)
		raise common.xmpp.NodeProcessed

	def _VersionResultCB(self, con, iq_obj):
		gajim.log.debug('VersionResultCB')
		client_info = ''
		os_info = ''
		qp = iq_obj.getTag('query')
		if qp.getTag('name'):
			client_info += qp.getTag('name').getData()
		if qp.getTag('version'):
			client_info += ' ' + qp.getTag('version').getData()
		if qp.getTag('os'):
			os_info += qp.getTag('os').getData()
		jid = iq_obj.getFrom().getStripped()
		resource = iq_obj.getFrom().getResource()
		self.dispatch('OS_INFO', (jid, resource, client_info, os_info))
	
	def _MucOwnerCB(self, con, iq_obj):
		gajim.log.debug('MucOwnerCB')
		qp = iq_obj.getQueryPayload()
		node = None
		for q in qp:
			if q.getNamespace() == common.xmpp.NS_DATA:
				node = q
		if not node:
			return
		# Parse the form
		dic = {}
		tag = node.getTag('title')
		if tag:
			dic['title'] = tag.getData()
		tag = node.getTag('instructions')
		if tag:
			dic['instructions'] = tag.getData()
		i = 0
		for child in node.getChildren():
			if child.getName() != 'field':
				continue
			var = child.getAttr('var')
			ctype = child.getAttr('type')
			label = child.getAttr('label')
			if not var and ctype != 'fixed': # We must have var if type != fixed
				continue
			dic[i] = {}
			if var:
				dic[i]['var'] = var
			if ctype:
				dic[i]['type'] = ctype
			if label:
				dic[i]['label'] = label
			tags = child.getTags('value')
			if len(tags):
				dic[i]['values'] = []
				for tag in tags:
					data = tag.getData()
					if ctype == 'boolean':
						if data in ['yes', 'true', 'assent', '1']:
							data = True
						else:
							data = False
					dic[i]['values'].append(data)
			tag = child.getTag('desc')
			if tag:
				dic[i]['desc'] = tag.getData()
			option_tags = child.getTags('option')
			if len(option_tags):
				dic[i]['options'] = {}
				j = 0
				for option_tag in option_tags:
					dic[i]['options'][j] = {}
					label = option_tag.getAttr('label')
					if label:
						dic[i]['options'][j]['label'] = label
					tags = option_tag.getTags('value')
					dic[i]['options'][j]['values'] = []
					for tag in tags:
						dic[i]['options'][j]['values'].append(tag.getData())
					j += 1
			i += 1
		self.dispatch('GC_CONFIG', (str(iq_obj.getFrom()), dic))

	def _MucErrorCB(self, con, iq_obj):
		gajim.log.debug('MucErrorCB')
		jid = str(iq_obj.getFrom())
		errmsg = iq_obj.getError()
		errcode = iq_obj.getErrorCode()
		self.dispatch('MSGERROR', (jid, errcode, errmsg))

	def _getRosterCB(self, con, iq_obj):
		roster = self.connection.getRoster().getRaw()
		if not roster :
			roster = {}
		name = gajim.config.get_per('accounts', self.name, 'name')
		hostname = gajim.config.get_per('accounts', self.name, 'hostname')
		if roster.has_key(name + '@' + hostname):
			del roster[name + '@' + hostname]
		self.dispatch('ROSTER', roster)

	def _ErrorCB(self, con, iq_obj):
		errmsg = iq_obj.getError()
		errcode = iq_obj.getErrorCode()
		jid_from = str(iq_obj.getFrom())
		self.dispatch('ERROR_ANSWER', (jid_from, errmsg, errcode))

	def connect(self):
		"""Connect and authentificate to the Jabber server"""
		name = gajim.config.get_per('accounts', self.name, 'name')
		hostname = gajim.config.get_per('accounts', self.name, 'hostname')
		resource = gajim.config.get_per('accounts', self.name, 'resource')
		usetls = gajim.config.get_per('accounts', self.name, 'usetls')

		#create connexion if it doesn't already existe
		if self.connection:
			return self.connection
		self.connected = 1
		if gajim.config.get_per('accounts', self.name, 'use_proxy'):
			proxy = {'host': gajim.config.get_per('accounts', self.name,
				'proxyhost')}
			proxy['port'] = gajim.config.get_per('accounts', self.name,
				'proxyport')
			proxy['user'] = gajim.config.get_per('accounts', self.name,
				'proxyuser')
			proxy['password'] = gajim.config.get_per('accounts', self.name,
				'proxypass')
		else:
			proxy = None
		if gajim.config.get('verbose'):
			con = common.xmpp.Client(hostname)
		else:
			con = common.xmpp.Client(hostname, debug = [])
			#debug = [common.jabber.DBG_ALWAYS], log = sys.stderr, \
			#connection=common.xmlstream.TCP_SSL, port=5223, proxy = proxy)
		con.UnregisterDisconnectHandler(con.DisconnectHandler)
		con.RegisterDisconnectHandler(self._disconnectedCB)
		try:
			c = con.connect(proxy=proxy, tls=usetls) #FIXME: blocking
		except:
			c = None
		if not c:
			gajim.log.debug('Couldn\'t connect to %s' % hostname)
			self.connected = 0
			self.dispatch('STATUS', 'offline')
			self.dispatch('ERROR', _('Couldn\'t connect to %s') % hostname)
			return None

		con.RegisterHandler('message', self._messageCB)
		con.RegisterHandler('presence', self._presenceCB)
		con.RegisterHandler('iq', self._vCardCB, 'result',\
			common.xmpp.NS_VCARD)
		con.RegisterHandler('iq', self._rosterSetCB, 'set',\
			common.xmpp.NS_ROSTER)
		con.RegisterHandler('iq', self._BrowseResultCB, 'result',\
			common.xmpp.NS_BROWSE)
		con.RegisterHandler('iq', self._DiscoverItemsCB, 'result',\
			common.xmpp.NS_DISCO_ITEMS)
		con.RegisterHandler('iq', self._DiscoverInfoCB, 'result',\
			common.xmpp.NS_DISCO_INFO)
		con.RegisterHandler('iq', self._DiscoverInfoErrorCB, 'error',\
			common.xmpp.NS_DISCO_INFO)
		con.RegisterHandler('iq', self._VersionCB, 'get',\
			common.xmpp.NS_VERSION)
		con.RegisterHandler('iq', self._VersionResultCB, 'result',\
			common.xmpp.NS_VERSION)
		con.RegisterHandler('iq', self._MucOwnerCB, 'result',\
			common.xmpp.NS_MUC_OWNER)
		con.RegisterHandler('iq', self._getRosterCB, 'result',\
			common.xmpp.NS_ROSTER)
		con.RegisterHandler('iq', self._ErrorCB, 'error')

		gajim.log.debug('Connected to server')

		try:
			auth = con.auth(name, self.password, resource) #FIXME: blocking
		except IOError: #probably a timeout
			self.connected = 0
			self.dispatch('STATUS', 'offline')
			self.dispatch('ERROR', _('Couldn\'t connect to %s') % hostname)
			return None
		if auth:
			con.initRoster()
			self.connected = 2
			return con
		else:
			gajim.log.debug('Couldn\'t authentificate to %s' % hostname)
			self.connected = 0
			self.dispatch('STATUS', 'offline')
			self.dispatch('ERROR', _('Authentification failed with %s, check your login and password') % hostname)
			return None
# END connect

	def register_handler(self, event, function):
		if event in self.handlers:
			self.handlers[event].append(function)

	def unregister_handler(self, event, function):
		if event in self.handlers:
			if function in self.handlers[event]:
				self.handlers[event].remove(function)

	def quit(self, kill_core):
		if kill_core:
			if self.connected > 1:
				self.connected = 0
				self.connection.disconnect('Disconnected')
			return

	def ask_roster(self):
		roster = {}
		if self.connection:
			roster = self.connection.getRoster().getRaw()
		return roster
	
	def change_status(self, show, msg):
		if not show in STATUS_LIST:
			return -1
		if not msg:
			msg = show
		self.status = msg
		signed = ''
		keyID = gajim.config.get_per('accounts', self.name, 'keyid')
		if keyID and USE_GPG:
			signed = self.gpg.sign(msg, keyID)
			if signed == 'BAD_PASSPHRASE':
				signed = ''
				if self.connected < 2:
					self.dispatch('BAD_PASSPHRASE', ())
		if show != 'offline' and not self.connected:
			self.connection = self.connect()
			if self.connected == 2:
				self.connected = STATUS_LIST.index(show)
				#send our presence
				ptype = 'available'
				if show == 'invisible':
					ptype = 'invisible'
				prio = str(gajim.config.get_per('accounts', self.name, 'priority'))
				p = common.xmpp.Presence(typ = ptype, priority = prio, show =\
					show, status=msg)
				if signed:
				    p.setTag(common.xmpp.NS_SIGNED + ' x').setData(signed)

				self.connection.send(p)
				self.dispatch('STATUS', show)
				#ask our VCard
				iq = common.xmpp.Iq('get')
				iq.setTag(common.xmpp.NS_VCARD + ' vCard')
				self.connection.send(iq)
				self.myVCardID.append(iq.getID())
		elif show == 'offline' and self.connected:
			self.connected = 0
			if self.connection:
				self.connection.send(common.xmpp.Presence(typ = 'unavailable',
					status = msg))
				self.connection.disconnect()
			self.dispatch('STATUS', 'offline')
			self.connection = None
		elif show != 'offline' and self.connected:
			self.connected = STATUS_LIST.index(show)
			ptype = 'available'
			if show == 'invisible':
				ptype = 'invisible'
			prio = str(gajim.config.get_per('accounts', self.name, 'priority'))
			p = common.xmpp.Presence(typ = ptype, priority = prio, show = show,
				status = msg)
			if signed: p.setTag(common.xmpp.NS_SIGNED + ' x').setData(signed)
			self.connection.send(p)
			self.dispatch('STATUS', show)

	def send_message(self, jid, msg, keyID):
		if not self.connection:
			return
		msgtxt = msg
		msgenc = ''
		if keyID and USE_GPG:
			#encrypt
			msgenc = self.gpg.encrypt(msg, keyID)
			if msgenc: msgtxt = _('[this message is encrypted]')
		msg_iq = common.xmpp.Message(to = jid, body = msgtxt, typ = 'chat')
		if msgenc:
			msg_iq.setTag(common.xmpp.NS_ENCRYPTED + ' x').setData(msgenc)
		self.connection.send(msg_iq)
		gajim.logger.write('outgoing', msg, jid)
		self.dispatch('MSGSENT', (jid, msg, keyID))

	def request_subscription(self, jid, msg):
		if not self.connection:
			return
		gajim.log.debug('subscription request for %s' % jid)
		pres = common.xmpp.Presence(jid, 'subscribe')
		if not msg:
			msg = _('I would like to add you to my roster.')
		pres.setStatus(msg)
		self.connection.send(pres)

	def send_authorization(self, jid):
		if not self.connection:
			return
		self.connection.send(common.xmpp.Presence(jid, 'subscribed'))

	def refuse_authorization(self, jid):
		if not self.connection:
			return
		self.connection.send(common.xmpp.Presence(jid, 'unsubscribed'))

	def unsubscribe(self, jid):
		if not self.connection:
			return
		delauth = gajim.config.get('delauth')
		delroster = gajim.config.get('delroster')
		if delauth:
			self.connection.getRoster().Unsubscribe(jid)
		if delroster:
			self.connection.getRoster().delItem(jid)

	def _continue_unsubscribe(self, con, iq_obj, agent):
		self.connection.getRoster().delItem(agent)
		self.dispatch('AGENT_REMOVED', agent)

	def unsubscribe_agent(self, agent):
		if not self.connection:
			return
		iq = common.xmpp.Iq('set', common.xmpp.NS_REGISTER, to = agent)
		iq.getTag('query').setTag('remove')
		self.connection.SendAndCallForResponse(iq, self._continue_unsubscribe,
			{'agent': agent})
		return

	def update_user(self, jid, name, groups):
		if self.connection:
			self.connection.getRoster().setItem(jid = jid, name = name,
				groups = groups)

	def request_agents(self, jid, node):
		if self.connection:
			self.connection.send(common.xmpp.Iq(to = jid, typ = 'get', 
				queryNS = common.xmpp.NS_BROWSE))
			self.discoverInfo(jid, node)

	def _receive_register_agent_info(self, con, iq_obj, agent):
		if not common.xmpp.isResultNode(iq_obj):
			return
		iq = common.xmpp.Iq('get', common.xmpp.NS_REGISTER, to = agent)
		df = iq_obj.getTag('query', namespace = common.xmpp.NS_REGISTER).\
			getTag('x', namespace = common.xmpp.NS_DATA)
		if df:
			df = common.xmpp.DataForm(node = df)
			self.dispatch('REGISTER_AGENT_INFO', (agent, df.asDict()))
			return
		df = common.xmpp.DataForm(typ = 'form')
		for i in iq_obj.getQueryPayload():
			if type(i) != type(iq):
				pass
			elif i.getName() == 'instructions':
				df.addInstructions(i.getData())
			else:
				df.setField(i.getName()).setValue(i.getData())
		self.dispatch('REGISTER_AGENT_INFO', (agent, df.asDict()))
		return

	def request_register_agent_info(self, agent):
		if not self.connection:
			return None
		iq = common.xmpp.Iq('get', common.xmpp.NS_REGISTER, to = agent)
		self.connection.SendAndCallForResponse(iq,
			self._receive_register_agent_info, {'agent': agent})
		return

	def register_agent(self, agent, info):
		if not self.connection:
			return
		common.xmpp.features.register(self.connection, agent, info) # FIXME: Blocking

	def new_account(self, name, config):
		# If a connection already exist we cannot create a new account
		if self.connection:
			return
		if config['use_proxy']:
			proxy = {'host': config['proxyhost'], 'port': config['proxyport'],
				'user': config['proxyuser'], 'password': config['proxypass']}
		else:
			proxy = None
		c = common.xmpp.Client(server = config['hostname'], debug = [])
		try:
			c.connect(proxy = proxy)
		except:
			gajim.log.debug('Couldn\'t connect to %s' % config['hostname'])
			self.dispatch('ERROR', _('Couldn\'t connect to ') + config['hostname'])
			return 0
		else:
			gajim.log.debug('Connected to server')
			req = common.xmpp.features.getRegInfo(c, config['hostname']).asDict() # FIXME! This blocks!
			req['username'] = config['name']
			req['password'] = config['password']
			if not common.xmpp.features.register(c, config['hostname'], req): #FIXME: error
				self.dispatch('ERROR', _('Error: ') + c.lastErr)
			else:
				self.name = name
				self.connected = 0
				self.password = config['password']
				if USE_GPG:
					self.gpg = GnuPG.GnuPG()
					gajim.config.set('usegpg', True)
				else:
					gajim.config.set('usegpg', False)
				gajim.connections[name] = self
				self.dispatch('ACC_OK', (name, config))

	def account_changed(self, new_name):
		self.name = new_name

	def request_os_info(self, jid, resource):
		if not self.connection:
			return
		iq = common.xmpp.Iq(to=jid + '/' + resource, typ = 'get', queryNS =\
			common.xmpp.NS_VERSION)
		self.connection.send(iq)

	def request_vcard(self, jid):
		if not self.connection:
			return
		iq = common.xmpp.Iq(to = jid, typ = 'get')
		iq.setTag(common.xmpp.NS_VCARD + ' vCard')
		self.connection.send(iq)
			#('VCARD', {entry1: data, entry2: {entry21: data, ...}, ...})
	
	def send_vcard(self, vcard):
		if not self.connection:
			return
		iq = common.xmpp.Iq(typ = 'set')
		iq2 = iq.setTag(common.xmpp.NS_VCARD + ' vCard')
		for i in vcard.keys():
			if i != 'jid':
				if type(vcard[i]) == type({}):
					iq3 = iq2.addChild(i)
					for j in vcard[i].keys():
						iq3.addChild(j).setData(vcard[i][j])
				else:
					iq2.addChild(i).setData(vcard[i])
		self.connection.send(iq)

	def send_agent_status(self, agent, ptype):
		if not self.connection:
			return
		if not ptype:
			ptype = 'available';
		p = common.xmpp.Presence(to = agent, typ = ptype)
		self.connection.send(p)

	def join_gc(self, nick, room, server, password):
		if not self.connection:
			return
		p = common.xmpp.Presence(to = '%s@%s/%s' % (room, server, nick),
			show = STATUS_LIST[self.connected], status = self.status)
		t = p.setTag(common.xmpp.NS_MUC + ' x')
		if password:
			t.setTagData('password', password)
		self.connection.send(p)

	def send_gc_message(self, jid, msg):
		if not self.connection:
			return
		msg_iq = common.xmpp.Message(jid, msg, typ = 'groupchat')
		self.connection.send(msg_iq)
		self.dispatch('MSGSENT', (jid, msg))

	def send_gc_subject(self, jid, subject):
		if not self.connection:
			return
		msg_iq = common.xmpp.Message(jid,typ = 'groupchat', subject = subject)
		self.connection.send(msg_iq)

	def request_gc_config(self, room_jid):
		iq = common.xmpp.Iq(typ = 'get', queryNS = common.xmpp.NS_MUC_OWNER,\
			to = room_jid)
		self.connection.send(iq)

	def send_gc_status(self, nick, jid, show, status):
		if not self.connection:
			return
		if show == 'offline':
			ptype = 'unavailable'
			show = None
		else:
			ptype = 'available'
		self.connection.send(common.xmpp.Presence(to = '%s/%s' % (jid, nick), \
			typ = ptype, show = show, status = status))

	def gc_set_role(self, room_jid, nick, role):
		if not self.connection:
			return
		iq = common.xmpp.Iq(typ = 'set', to = room_jid, queryNS =\
			common.xmpp.NS_MUC_ADMIN)
		item = iq.getTag('query').setTag('item')
		item.setAttr('nick', nick)
		item.setAttr('role', role)
		self.connection.send(iq)

	def gc_set_affiliation(self, room_jid, jid, affiliation):
		if not self.connection:
			return
		iq = common.xmpp.Iq(typ = 'set', to = room_jid, queryNS =\
			common.xmpp.NS_MUC_ADMIN)
		item = iq.getTag('query').setTag('item')
		item.setAttr('jid', jid)
		item.setAttr('affiliation', affiliation)
		self.connection.send(iq)

	def send_gc_config(self, room_jid, config):
		iq = common.xmpp.Iq(typ = 'set', to = room_jid, queryNS =\
			common.xmpp.NS_MUC_OWNER)
		query = iq.getTag('query')
		x = query.setTag(common.xmpp.NS_DATA + ' x', attrs = {'type': 'submit'}) # FIXME: should really use XData class
		i = 0
		while config.has_key(i):
			if not config[i].has_key('type'):
				i += 1
				continue
			if config[i]['type'] == 'fixed':
				i += 1
				continue
			tag = x.addChild('field')
			if config[i].has_key('var'):
				tag.setAttr('var', config[i]['var'])
			if config[i].has_key('values'):
				for val in  config[i]['values']:
					if val == False:
						val = '0'
					elif val == True:
						val = '1'
					tag.setTagData('value', val)
			i += 1
		self.connection.send(iq)

	def gpg_passphrase(self, passphrase):
		if USE_GPG:
			self.gpg.passphrase = passphrase

	def ask_gpg_secrete_keys(self):
		if USE_GPG:
			keys = self.gpg.get_secret_keys()
			return keys
		return None

	def change_password(self, password, username):
		if not self.connection:
			return
		hostname = gajim.config.get_per('accounts', self.name, 'hostname')
		iq = common.xmpp.Iq(typ = 'set', to = hostname)
		q = iq.setTag(common.xmpp.NS_REGISTER + ' query')
		q.setTagData('username',username)
		q.setTagData('password',password)
		self.connection.send(iq)

	def unregister_account(self):
		if self.connected == 0:
			self.connection = self.connect()
		if self.connected > 1:
			hostname = gajim.config.get_per('accounts', self.name, 'hostname')
			iq = common.xmpp.Iq(typ = 'set', to = hostname)
			q = iq.setTag(common.xmpp.NS_REGISTER + ' query').setTag('remove')
			self.connection.send(iq)

	def process(self, timeout):
		if not self.connection:
			return
		if self.connected:
			try:
				self.connection.Process(timeout)
			except:
				gajim.log.debug('error appeared while processing xmpp: ' + \
					str(sys.exc_info()[1]))
				self.connected = 0
				self.dispatch('STATUS', 'offline')
				try:
					self.connection.disconnect()
				except:
					gajim.log.debug('error appeared while processing xmpp: ' + \
						str(sys.exc_info()[1]))
				self.connection = None
# END GajimCore