oscar.py :  » Network » Twisted » Twisted-1.0.3 » Twisted-1.0.3 » twisted » protocols » Python Open Source

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Python Open Source » Network » Twisted 
Twisted » Twisted 1.0.3 » Twisted 1.0.3 » twisted » protocols » oscar.py
# Twisted, the Framework of Your Internet
# Copyright (C) 2001 Matthew W. Lefkowitz
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of version 2.1 of the GNU Lesser General Public
# License as published by the Free Software Foundation.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

"""An implementation of the OSCAR protocol, which AIM and ICQ use to communcate.

This module is unstable.

Maintainer: U{Paul Swartz<mailto:z3p@twistedmatrix.com>}
"""

from __future__ import nested_scopes

from twisted.internet import reactor,main,defer,protocol
from twisted.python import log

import struct
import md5
import string
import socket
import random
import time
import types
import re

def logPacketData(data):
    lines = len(data)/16
    if lines*16 != len(data): lines=lines+1
    for i in range(lines):
        d = tuple(data[16*i:16*i+16])
        hex = map(lambda x: "%02X"%ord(x),d)
        text = map(lambda x: (len(repr(x))>3 and '.') or x, d)
        log.msg(' '.join(hex)+ ' '*3*(16-len(d)) +''.join(text))
    log.msg('')

def SNAC(fam,sub,id,data,flags=[0,0]):
    header="!HHBBL"
    head=struct.pack(header,fam,sub,
                     flags[0],flags[1],
                     id)
    return head+str(data)

def readSNAC(data):
    header="!HHBBL"
    head=list(struct.unpack(header,data[:10]))
    return head+[data[10:]]

def TLV(type,value):
    header="!HH"
    head=struct.pack(header,type,len(value))
    return head+str(value)

def readTLVs(data,count=None):
    header="!HH"
    dict={}
    while data and len(dict)!=count:
        head=struct.unpack(header,data[:4])
        dict[head[0]]=data[4:4+head[1]]
        data=data[4+head[1]:]
    if not count:
        return dict
    return dict,data

def encryptPasswordMD5(password,key):
    m=md5.new()
    m.update(key)
    m.update(md5.new(password).digest())
    m.update("AOL Instant Messenger (SM)")
    return m.digest()

def encryptPasswordICQ(password):
    key=[0xF3,0x26,0x81,0xC4,0x39,0x86,0xDB,0x92,0x71,0xA3,0xB9,0xE6,0x53,0x7A,0x95,0x7C]
    bytes=map(ord,password)
    r=""
    for i in range(len(bytes)):
        r=r+chr(bytes[i]^key[i%len(key)])
    return r

def dehtml(text):
    text=string.replace(text,"<br>","\n")
    text=string.replace(text,"<BR>","\n")
    text=string.replace(text,"<Br>","\n") # XXX make this a regexp
    text=string.replace(text,"<bR>","\n")
    text=re.sub('<.*?>','',text)
    text=string.replace(text,'&gt;','>')
    text=string.replace(text,'&lt;','<')
    text=string.replace(text,'&amp;','&')
    text=string.replace(text,'&nbsp;',' ')
    text=string.replace(text,'&#34;','"')
    return text

def html(text):
    text=string.replace(text,'"','&#34;')
    text=string.replace(text,'&amp;','&')
    text=string.replace(text,'&lt;','<')
    text=string.replace(text,'&gt;','>')
    text=string.replace(text,"\n","<br>")
    return '<html><body bgcolor="white"><font color="black">%s</font></body></html>'%text

class OSCARUser:
    def __init__(self, name, warn, tlvs):
        self.name = name
        self.warning = warn
        self.flags = []
        self.caps = []
        for k,v in tlvs.items():
            if k == 1: # user flags
                v=struct.unpack('!H',v)[0]
                for o, f in [(1,'trial'),
                             (2,'unknown bit 2'),
                             (4,'aol'),
                             (8,'unknown bit 4'),
                             (16,'aim'),
                             (32,'away'),
                             (1024,'activebuddy')]:
                    if v&o: self.flags.append(f)
            elif k == 2: # member since date
                self.memberSince = struct.unpack('!L',v)[0]
            elif k == 3: # on-since
                self.onSince = struct.unpack('!L',v)[0]
            elif k == 4: # idle time
                self.idleTime = struct.unpack('!H',v)[0]
            elif k == 5: # unknown
                pass
            elif k == 6: # icq online status
                self.icqStatus = int(v)
            elif k == 10: # icq ip address
                self.icqIPaddy = socket.inet_ntoa(v)
            elif k == 12: # icq random stuff
                self.icqRandom = v
            elif k == 13: # capabilities
                caps=[]
                while v:
                    c=v[:16]
                    if c==CAP_ICON: caps.append("icon")
                    elif c==CAP_IMAGE: caps.append("image")
                    elif c==CAP_VOICE: caps.append("voice")
                    elif c==CAP_CHAT: caps.append("chat")
                    elif c==CAP_GET_FILE: caps.append("getfile")
                    elif c==CAP_SEND_FILE: caps.append("sendfile")
                    elif c==CAP_SEND_LIST: caps.append("sendlist")
                    elif c==CAP_GAMES: caps.append("games")
                    else: caps.append(("unknown",c))
                    v=v[16:]
                caps.sort()
                self.caps=caps
            elif k == 14: pass
            elif k == 15: # session length (aim)
                self.sessionLength = struct.unpack('!L',v)[0]
            elif k == 16: # session length (aol)
                self.sessionLength = struct.unpack('!L',v)[0]
            elif k == 30: # no idea
                pass
            else:
                log.msg("unknown tlv for user %s\nt: %s\nv: %s"%(self.name,k,repr(v)))

    def __str__(self):
        s = '<OSCARUser %s' % self.name
        o = []
        if self.warning!=0: o.append('warning level %s'%self.warning)
        if hasattr(self, 'flags'): o.append('flags %s'%self.flags)
        if hasattr(self, 'sessionLength'): o.append('online for %i minutes' % (self.sessionLength/60,))
        if hasattr(self, 'idleTime'): o.append('idle for %i minutes' % self.idleTime)
        if self.caps: o.append('caps %s'%self.caps)
        if o:
            s=s+', '+', '.join(o)
        s=s+'>'
        return s


class SSIGroup:
    def __init__(self, name, tlvs = {}):
        self.name = name
        #self.tlvs = []
        #self.userIDs = []
        self.usersToID = {}
        self.users = []
        #if not tlvs.has_key(0xC8): return
        #buddyIDs = tlvs[0xC8]
        #while buddyIDs:
        #    bid = struct.unpack('!H',buddyIDs[:2])[0]
        #    buddyIDs = buddyIDs[2:]
        #    self.users.append(bid)

    def findIDFor(self, user):
        return self.usersToID[user]

    def addUser(self, buddyID, user):
        self.usersToID[user] = buddyID
        self.users.append(user)
        user.group = self

    def oscarRep(self, groupID, buddyID):
        tlvData = TLV(0xc8, reduce(lambda x,y:x+y, [struct.pack('!H',self.usersToID[x]) for x in self.users]))
        return struct.pack('!H', len(self.name)) + self.name + \
               struct.pack('!HH', groupID, buddyID) + '\000\001' + tlvData


class SSIBuddy:
    def __init__(self, name, tlvs = {}):
        self.name = name
        self.tlvs = tlvs
        for k,v in tlvs.items():
            if k == 0x013c: # buddy comment
                self.buddyComment = v
            elif k == 0x013d: # buddy alerts
                actionFlag = ord(v[0])
                whenFlag = ord(v[1])
                self.alertActions = []
                self.alertWhen = []
                if actionFlag&1:
                    self.alertActions.append('popup')
                if actionFlag&2:
                    self.alertActions.append('sound')
                if whenFlag&1:
                    self.alertWhen.append('online')
                if whenFlag&2:
                    self.alertWhen.append('unidle')
                if whenFlag&4:
                    self.alertWhen.append('unaway')
            elif k == 0x013e:
                self.alertSound = v

    def oscarRep(self, groupID, buddyID):
        tlvData = reduce(lambda x,y: x+y, map(lambda (k,v):TLV(k,v), self.tlvs.items())) or '\000\000'
        return struct.pack('!H', len(self.name)) + self.name + \
               struct.pack('!HH', groupID, buddyID) + '\000\000' + tlvData


class OscarConnection(protocol.Protocol):
    def connectionMade(self):
        self.state=""
        self.seqnum=0
        self.buf=''
        self.stopKeepAliveID = None
        self.setKeepAlive(4*60) # 4 minutes

    def connectionLost(self, reason):
        log.msg("Connection Lost! %s" % self)
        self.stopKeepAlive()

#    def connectionFailed(self):
#        log.msg("Connection Failed! %s" % self)
#        self.stopKeepAlive()

    def sendFLAP(self,data,channel = 0x02):
        header="!cBHH"
        self.seqnum=(self.seqnum+1)%0xFFFF
        seqnum=self.seqnum
        head=struct.pack(header,'*', channel,
                         seqnum, len(data))
        self.transport.write(head+str(data))
#        if isinstance(self, ChatService):
#            logPacketData(head+str(data))

    def readFlap(self):
        header="!cBHH"
        if len(self.buf)<6: return
        flap=struct.unpack(header,self.buf[:6])
        if len(self.buf)<6+flap[3]: return
        data,self.buf=self.buf[6:6+flap[3]],self.buf[6+flap[3]:]
        return [flap[1],data]

    def dataReceived(self,data):
#        if isinstance(self, ChatService):
#            logPacketData(data)
        self.buf=self.buf+data
        flap=self.readFlap()
        while flap:
            func=getattr(self,"oscar_%s"%self.state,None)
            if not func:
                log.msg("no func for state: %s" % self.state)
            state=func(flap)
            if state:
                self.state=state
            flap=self.readFlap()

    def setKeepAlive(self,t):
        self.keepAliveDelay=t
        self.stopKeepAlive()
        self.stopKeepAliveID = reactor.callLater(t, self.sendKeepAlive)

    def sendKeepAlive(self):
        self.sendFLAP("",0x05)
        self.stopKeepAliveID = reactor.callLater(self.keepAliveDelay, self.sendKeepAlive)

    def stopKeepAlive(self):
        if self.stopKeepAliveID:
            self.stopKeepAliveID.cancel()
            self.stopKeepAliveID = None

    def disconnect(self):
        """
        send the disconnect flap, and sever the connection
        """
        self.sendFLAP('', 0x04)
        def f(reason): pass
        self.connectionLost = f
        self.transport.loseConnection()


class SNACBased(OscarConnection):
    snacFamilies = {
        # family : (version, toolID, toolVersion)
    }
    def __init__(self,cookie):
        self.cookie=cookie
        self.lastID=0
        self.supportedFamilies = ()
        self.requestCallbacks={} # request id:Deferred

    def sendSNAC(self,fam,sub,data,flags=[0,0]):
        """
        send a snac and wait for the response by returning a Deferred.
        """
        reqid=self.lastID
        self.lastID=reqid+1
        d = defer.Deferred()
        d.reqid = reqid

        #d.addErrback(self._ebDeferredError,fam,sub,data) # XXX for testing

        self.requestCallbacks[reqid] = d
        self.sendFLAP(SNAC(fam,sub,reqid,data))
        return d

    def _ebDeferredError(self, error, fam, sub, data):
        log.msg('ERROR IN DEFERRED %s' % error)
        log.msg('on sending of message, family 0x%02x, subtype 0x%02x' % (fam, sub))
        log.msg('data: %s' % repr(data))

    def sendSNACnr(self,fam,sub,data,flags=[0,0]):
        """
        send a snac, but don't bother adding a deferred, we don't care.
        """
        self.sendFLAP(SNAC(fam,sub,0x10000*fam+sub,data))

    def oscar_(self,data):
        self.sendFLAP("\000\000\000\001"+TLV(6,self.cookie), 0x01)
        return "Data"

    def oscar_Data(self,data):
        snac=readSNAC(data[1])
        if self.requestCallbacks.has_key(snac[4]):
            d = self.requestCallbacks[snac[4]]
            del self.requestCallbacks[snac[4]]
            if snac[1]!=1:
                d.callback(snac)
            else:
                d.errback(snac)
            return
        func=getattr(self,'oscar_%02X_%02X'%(snac[0],snac[1]),None)
        if not func:
            self.oscar_unknown(snac)
        else:
            func(snac[2:])
        return "Data"

    def oscar_unknown(self,snac):
        log.msg("unknown for %s" % self)
        log.msg(snac)


    def oscar_01_03(self, snac):
        numFamilies = len(snac[3])/2
        self.supportedFamilies = struct.unpack("!"+str(numFamilies)+'H', snac[3])
        d = ''
        for fam in self.supportedFamilies:
            if self.snacFamilies.has_key(fam):
                d=d+struct.pack('!2H',fam,self.snacFamilies[fam][0])
        self.sendSNACnr(0x01,0x17, d)

    def oscar_01_0A(self,snac):
        """
        change of rate information.
        """
        # this can be parsed, maybe we can even work it in
        pass

    def oscar_01_18(self,snac):
        """
        host versions, in the same format as we sent
        """
        self.sendSNACnr(0x01,0x06,"") #pass

    def clientReady(self):
        """
        called when the client is ready to be online
        """
        d = ''
        for fam in self.supportedFamilies:
            if self.snacFamilies.has_key(fam):
                version, toolID, toolVersion = self.snacFamilies[fam]
                d = d + struct.pack('!4H',fam,version,toolID,toolVersion)
        self.sendSNACnr(0x01,0x02,d)

class BOSConnection(SNACBased):
    snacFamilies = {
        0x01:(3, 0x0110, 0x059b),
        0x13:(3, 0x0110, 0x059b),
        0x02:(1, 0x0110, 0x059b),
        0x03:(1, 0x0110, 0x059b),
        0x04:(1, 0x0110, 0x059b),
        0x06:(1, 0x0110, 0x059b),
        0x08:(1, 0x0104, 0x0001),
        0x09:(1, 0x0110, 0x059b),
        0x0a:(1, 0x0110, 0x059b),
        0x0b:(1, 0x0104, 0x0001),
        0x0c:(1, 0x0104, 0x0001)
    }

    capabilities = None

    def __init__(self,username,cookie):
        SNACBased.__init__(self,cookie)
        self.username=username
        self.profile = None
        self.awayMessage = None
        self.services = {}

        if not self.capabilities:
            self.capabilities = [CAP_CHAT]

    def parseUser(self,data,count=None):
        l=ord(data[0])
        name=data[1:1+l]
        warn,foo=struct.unpack("!HH",data[1+l:5+l])
        warn=int(warn/10)
        tlvs=data[5+l:]
        if count:
            tlvs,rest = readTLVs(tlvs,foo)
        else:
            tlvs,rest = readTLVs(tlvs), None
        u = OSCARUser(name, warn, tlvs)
        if rest == None:
            return u
        else:
            return u, rest

    def oscar_01_05(self, snac, d = None):
        """
        data for a new service connection
        d might be a deferred to be called back when the service is ready
        """
        tlvs = readTLVs(snac[3][2:])
        service = struct.unpack('!H',tlvs[0x0d])[0]
        ip = tlvs[5]
        cookie = tlvs[6]
        #c = serviceClasses[service](self, cookie, d)
        c = protocol.ClientCreator(reactor, serviceClasses[service], self, cookie, d)
        def addService(x):
            self.services[service] = x
        c.connectTCP(ip, 5190).addCallback(addService)
        #self.services[service] = c

    def oscar_01_07(self,snac):
        """
        rate paramaters
        """
        self.sendSNACnr(0x01,0x08,"\x00\x01\x00\x02\x00\x03\x00\x04\x00\x05") # ack
        self.initDone()
        self.sendSNACnr(0x13,0x02,'') # SSI rights info
        self.sendSNACnr(0x02,0x02,'') # location rights info
        self.sendSNACnr(0x03,0x02,'') # buddy list rights
        self.sendSNACnr(0x04,0x04,'') # ICBM parms
        self.sendSNACnr(0x09,0x02,'') # BOS rights

    def oscar_01_10(self,snac):
        """
        we've been warned
        """
        skip = struct.unpack('!H',snac[3][:2])[0]
        newLevel = struct.unpack('!H',snac[3][2+skip:4+skip])[0]/10
        if len(snac[3])>4+skip:
            by = self.parseUser(snac[3][4+skip:])
        else:
            by = None
        self.receiveWarning(newLevel, by)

    def oscar_01_13(self,snac):
        """
        MOTD
        """
        pass # we don't care for now

    def oscar_02_03(self, snac):
        """
        location rights response
        """
        tlvs = readTLVs(snac[3])
        self.maxProfileLength = tlvs[1]

    def oscar_03_03(self, snac):
        """
        buddy list rights response
        """
        tlvs = readTLVs(snac[3])
        self.maxBuddies = tlvs[1]
        self.maxWatchers = tlvs[2]

    def oscar_03_0B(self, snac):
        """
        buddy update
        """
        self.updateBuddy(self.parseUser(snac[3]))

    def oscar_03_0C(self, snac):
        """
        buddy offline
        """
        self.offlineBuddy(self.parseUser(snac[3]))

#    def oscar_04_03(self, snac):

    def oscar_04_05(self, snac):
        """
        ICBM parms response
        """
        self.sendSNACnr(0x04,0x02,'\x00\x00\x00\x00\x00\x0b\x1f@\x03\xe7\x03\xe7\x00\x00\x00\x00') # IM rights

    def oscar_04_07(self, snac):
        """
        ICBM message (instant message)
        """
        data = snac[3]
        cookie, data = data[:8], data[8:]
        channel = struct.unpack('!H',data[:2])[0]
        data = data[2:]
        user, data = self.parseUser(data, 1)
        tlvs = readTLVs(data)
        if channel == 1: # message
            flags = []
            multiparts = []
            for k, v in tlvs.items():
                if k == 2:
                    while v:
                        v = v[2:] # skip bad data
                        messageLength, charSet, charSubSet = struct.unpack('!3H', v[:6])
                        messageLength -= 4
                        message = [v[6:6+messageLength]]
                        if charSet == 0:
                            pass # don't add anything special
                        elif charSet == 2:
                            message.append('unicode')
                        elif charSet == 3:
                            message.append('iso-8859-1')
                        elif charSet == 0xffff:
                            message.append('none')
                        if charSubSet == 0xb:
                            message.append('macintosh')
                        if messageLength > 0: multiparts.append(tuple(message))
                        v = v[6+messageLength:]
                elif k == 3:
                    flags.append('acknowledge')
                elif k == 4:
                    flags.append('auto')
                elif k == 6:
                    flags.append('offline')
                elif k == 8:
                    iconLength, foo, iconSum, iconStamp = struct.unpack('!LHHL',v)
                    if iconLength:
                        flags.append('icon')
                        flags.append((iconLength, iconSum, iconStamp))
                elif k == 9:
                    flags.append('buddyrequest')
                elif k == 0xb: # unknown
                    pass
                elif k == 0x17:
                    flags.append('extradata')
                    flags.append(v)
                else:
                    log.msg('unknown TLV for incoming IM, %04x, %s' % (k,repr(v)))

#  unknown tlv for user SNewdorf
#  t: 29
#  v: '\x00\x00\x00\x05\x02\x01\xd2\x04r\x00\x01\x01\x10/\x8c\x8b\x8a\x1e\x94*\xbc\x80}\x8d\xc4;\x1dEM'
# XXX what is this?
            self.receiveMessage(user, multiparts, flags)
        elif channel == 2: # rondevouz
            status = struct.unpack('!H',tlvs[5][:2])[0]
            requestClass = tlvs[5][10:26]
            moreTLVs = readTLVs(tlvs[5][26:])
            if requestClass == CAP_CHAT: # a chat request
                exchange = struct.unpack('!H',moreTLVs[10001][:2])[0]
                name = moreTLVs[10001][3:-2]
                instance = struct.unpack('!H',moreTLVs[10001][-2:])[0]
                if not self.services.has_key(SERVICE_CHATNAV):
                    self.connectService(SERVICE_CHATNAV,1).addCallback(lambda x: self.services[SERVICE_CHATNAV].getChatInfo(exchange, name, instance).\
                        addCallback(self._cbGetChatInfoForInvite, user, moreTLVs[12]))
                else:
                    self.services[SERVICE_CHATNAV].getChatInfo(exchange, name, instance).\
                        addCallback(self._cbGetChatInfoForInvite, user, moreTLVs[12])
            elif requestClass == CAP_SEND_FILE:
                if moreTLVs.has_key(11): # cancel
                    log.msg('cancelled file request')
                    log.msg(status)
                    return # handle this later
                name = moreTLVs[10001][9:-7]
                desc = moreTLVs[12]
                log.msg('file request from %s, %s, %s' % (user, name, desc))
                self.receiveSendFileRequest(user, name, desc, cookie)
            else:
                log.msg('unsupported rondevouz: %s' % requestClass)
                log.msg(repr(moreTLVs))
        else:
            log.msg('unknown channel %02x' % channel)
            log.msg(tlvs)

    def _cbGetChatInfoForInvite(self, info, user, message):
        apply(self.receiveChatInvite, (user,message)+info)

    def oscar_09_03(self, snac):
        """
        BOS rights response
        """
        tlvs = readTLVs(snac[3])
        self.maxPermitList = tlvs[1]
        self.maxDenyList = tlvs[2]

    def oscar_0B_02(self, snac):
        """
        stats reporting interval
        """
        self.reportingInterval = struct.unpack('!H',snac[3])[0]

    def oscar_13_03(self, snac):
        """
        SSI rights response
        """
        #tlvs = readTLVs(snac[3])
        pass # we don't know how to parse this

    # methods to be called by the client, and their support methods
    def requestSelfInfo(self):
        """
        ask for the OSCARUser for ourselves
        """
        d = defer.Deferred()
        self.sendSNAC(0x01, 0x0E, '').addCallback(self._cbRequestSelfInfo, d)
        return d

    def _cbRequestSelfInfo(self, snac, d):
        d.callback(self.parseUser(snac[5]))

    def initSSI(self):
        """
        this sends the rate request for family 0x13 (Server Side Information)
        so we can then use it
        """
        return self.sendSNAC(0x13, 0x02, '').addCallback(self._cbInitSSI)

    def _cbInitSSI(self, snac, d):
        return {} # don't even bother parsing this

    def requestSSI(self, timestamp = 0, revision = 0):
        """
        request the server side information
        if the deferred gets None, it means the SSI is the same
        """
        return self.sendSNAC(0x13, 0x05,
            struct.pack('!LH',timestamp,revision)).addCallback(self._cbRequestSSI)

    def _cbRequestSSI(self, snac, args = ()):
        if snac[1] == 0x0f: # same SSI as we have
            return
        itemdata = snac[5][3:]
        if args:
            revision, groups, permit, deny, permitMode, visibility = args
        else:
            version, revision = struct.unpack('!BH', snac[5][:3])
            groups = {}
            permit = []
            deny = []
            permitMode = None
            visibility = None
        while len(itemdata)>4:
            nameLength = struct.unpack('!H', itemdata[:2])[0]
            name = itemdata[2:2+nameLength]
            groupID, buddyID, itemType, restLength = \
                struct.unpack('!4H', itemdata[2+nameLength:10+nameLength])
            tlvs = readTLVs(itemdata[10+nameLength:10+nameLength+restLength])
            itemdata = itemdata[10+nameLength+restLength:]
            if itemType == 0: # buddies
                groups[groupID].addUser(buddyID, SSIBuddy(name, tlvs))
            elif itemType == 1: # group
                g = SSIGroup(name, tlvs)
                if groups.has_key(0): groups[0].addUser(groupID, g)
                groups[groupID] = g
            elif itemType == 2: # permit
                permit.append(name)
            elif itemType == 3: # deny
                deny.append(name)
            elif itemType == 4: # permit deny info
                permitMode = {1:'permitall',2:'denyall',3:'permitsome',4:'denysome',5:'permitbuddies'}[ord(tlvs[0xca])]
                visibility = {'\xff\xff\xff\xff':'all','\x00\x00\x00\x04':'notaim'}[tlvs[0xcb]]
            elif itemType == 5: # unknown (perhaps idle data)?
                pass
            else:
                log.msg('%s %s %s %s %s' % (name, groupID, buddyID, itemType, tlvs))
        timestamp = struct.unpack('!L',itemdata)[0]
        if not timestamp: # we've got more packets coming
            # which means add some deferred stuff
            d = defer.Deferred()
            self.requestCallbacks[snac[4]] = d
            d.addCallback(self._cbRequestSSI, (revision, groups, permit, deny, permitMode, visibility))
            return d
        return (groups[0].users,permit,deny,permitMode,visibility,timestamp,revision)

    def activateSSI(self):
        """
        active the data stored on the server (use buddy list, permit deny settings, etc.)
        """
        self.sendSNACnr(0x13,0x07,'')

    def startModifySSI(self):
        """
        tell the OSCAR server to be on the lookout for SSI modifications
        """
        self.sendSNACnr(0x13,0x11,'')

    def addItemSSI(self, item, groupID = None, buddyID = None):
        """
        add an item to the SSI server.  if buddyID == 0, then this should be a group.
        this gets a callback when it's finished, but you can probably ignore it.
        """
        if not groupID:
            groupID = item.group.group.findIDFor(item.group)
        if not buddyID:
            buddyID = item.group.findIDFor(item)
        return self.sendSNAC(0x13,0x08, item.oscarRep(groupID, buddyID))

    def modifyItemSSI(self, item, groupID = None, buddyID = None):
        if not groupID:
            groupID = item.group.group.findIDFor(item.group)
        if not buddyID:
            buddyID = item.group.findIDFor(item)
        return self.sendSNAC(0x13,0x09, item.oscarRep(groupID, buddyID))

    def delItemSSI(self, item, groupID = None, buddyID = None):
        if not groupID:
            groupID = item.group.group.findIDFor(item.group)
        if not buddyID:
            buddyID = item.group.findIDFor(item)
        return self.sendSNAC(0x13,0x0A, item.oscarRep(groupID, buddyID))

    def endModifySSI(self):
        self.sendSNACnr(0x13,0x12,'')

    def setProfile(self, profile):
        """
        set the profile.
        send None to not set a profile (different from '' for a blank one)
        """
        self.profile = profile
        tlvs = ''
        if self.profile:
            tlvs =  TLV(1,'text/aolrtf; charset="us-ascii"') + \
                    TLV(2,self.profile)

        tlvs = tlvs + TLV(5, ''.join(self.capabilities))
        self.sendSNACnr(0x02, 0x04, tlvs)

    def setAway(self, away = None):
        """
        set the away message, or return (if away == None)
        """
        self.awayMessage = away
        tlvs = TLV(3,'text/aolrtf; charset="us-ascii"') + \
               TLV(4,away or '')
        self.sendSNACnr(0x02, 0x04, tlvs)

    def setIdleTime(self, idleTime):
        """
        set our idle time.  don't call more than once with a non-0 idle time.
        """
        self.sendSNACnr(0x01, 0x11, struct.pack('!L',idleTime))

    def sendMessage(self, user, message, wantAck = 0, autoResponse = 0, offline = 0 ):  \
                    #haveIcon = 0, ):
        """
        send a message to user (not an OSCARUseR).
        message can be a string, or a multipart tuple.
        if wantAck, we return a Deferred that gets a callback when the message is sent.
        if autoResponse, this message is an autoResponse, as if from an away message.
        if offline, this is an offline message (ICQ only, I think)
        """
        data = ''.join([chr(random.randrange(0, 127)) for i in range(8)]) # cookie
        data = data + '\x00\x01' + chr(len(user)) + user
        if not type(message) in (types.TupleType, types.ListType):
            message = [[message,]]
            if type(message[0][0]) == types.UnicodeType:
                message[0].append('unicode')
        messageData = ''
        for part in message:
            charSet = 0
            if 'unicode' in part[1:]:
                charSet = 2
            elif 'iso-8859-1' in part[1:]:
                charSet = 3
            elif 'none' in part[1:]:
                charSet = 0xffff
            if 'macintosh' in part[1:]:
                charSubSet = 0xb
            else:
                charSubSet = 0
            messageData = messageData + '\x01\x01' + \
                          struct.pack('!3H',len(part[0])+4,charSet,charSubSet)
            messageData = messageData + part[0]
        data = data + TLV(2, '\x05\x01\x00\x03\x01\x01\x02'+messageData)
        if wantAck:
            data = data + TLV(3,'')
        if autoResponse:
            data = data + TLV(4,'')
        if offline:
            data = data + TLV(6,'')
        if wantAck:
            return self.sendSNAC(0x04, 0x06, data).addCallback(self._cbSendMessageAck, user, message)
        self.sendSNACnr(0x04, 0x06, data)

    def _cbSendMessageAck(self, snac, user, message):
        return user, message

    def connectService(self, service, wantCallback = 0, extraData = ''):
        """
        connect to another service
        if wantCallback, we return a Deferred that gets called back when the service is online.
        if extraData, append that to our request.
        """
        if wantCallback:
            d = defer.Deferred()
            self.sendSNAC(0x01,0x04,struct.pack('!H',service) + extraData).addCallback(self._cbConnectService, d)
            return d
        else:
            self.sendSNACnr(0x01,0x04,struct.pack('!H',service))

    def _cbConnectService(self, snac, d):
        d.arm()
        self.oscar_01_05(snac[2:], d)

    def createChat(self, shortName):
        """
        create a chat room
        """
        if self.services.has_key(SERVICE_CHATNAV):
            return self.services[SERVICE_CHATNAV].createChat(shortName)
        else:
            d = defer.Deferred()
            self.connectService(SERVICE_CHATNAV,1).addCallback(lambda s:d.arm() or s.createChat(shortName).chainDeferred(d))
            return d


    def joinChat(self, exchange, fullName, instance):
        """
        join a chat room
        """
        #d = defer.Deferred()
        return self.connectService(0x0e, 1, TLV(0x01, struct.pack('!HB',exchange, len(fullName)) + fullName +
                          struct.pack('!H', instance))).addCallback(self._cbJoinChat) #, d)
        #return d

    def _cbJoinChat(self, chat):
        del self.services[SERVICE_CHAT]
        return chat

    def warnUser(self, user, anon = 0):
        return self.sendSNAC(0x04, 0x08, '\x00'+chr(anon)+chr(len(user))+user).addCallback(self._cbWarnUser)

    def _cbWarnUser(self, snac):
        oldLevel, newLevel = struct.unpack('!2H', snac[5])
        return oldLevel, newLevel

    def getInfo(self, user):
        #if user.
        return self.sendSNAC(0x02, 0x05, '\x00\x01'+chr(len(user))+user).addCallback(self._cbGetInfo)

    def _cbGetInfo(self, snac):
        user, rest = self.parseUser(snac[5],1)
        tlvs = readTLVs(rest)
        return tlvs.get(0x02,None)

    def getAway(self, user):
        return self.sendSNAC(0x02, 0x05, '\x00\x03'+chr(len(user))+user).addCallback(self._cbGetAway)

    def _cbGetAway(self, snac):
        user, rest = self.parseUser(snac[5],1)
        tlvs = readTLVs(rest)
        return tlvs.get(0x04,None) # return None if there is no away message

    #def acceptSendFileRequest(self,

    # methods to be overriden by the client
    def initDone(self):
        """
        called when we get the rate information, which means we should do other init. stuff.
        """
        log.msg('%s initDone' % self)
        pass

    def updateBuddy(self, user):
        """
        called when a buddy changes status, with the OSCARUser for that buddy.
        """
        log.msg('%s updateBuddy %s' % (self, user))
        pass

    def offlineBuddy(self, user):
        """
        called when a buddy goes offline
        """
        log.msg('%s offlineBuddy %s' % (self, user))
        pass

    def receiveMessage(self, user, multiparts, flags):
        """
        called when someone sends us a message
        """
        pass

    def receiveWarning(self, newLevel, user):
        """
        called when someone warns us.
        user is either None (if it was anonymous) or an OSCARUser
        """
        pass

    def receiveChatInvite(self, user, message, exchange, fullName, instance, shortName, inviteTime):
        """
        called when someone invites us to a chat room
        """
        pass

    def chatReceiveMessage(self, chat, user, message):
        """
        called when someone in a chatroom sends us a message in the chat
        """
        pass

    def chatMemberJoined(self, chat, member):
        """
        called when a member joins the chat
        """
        pass

    def chatMemberLeft(self, chat, member):
        """
        called when a member leaves the chat
        """
        pass

    def receiveSendFileRequest(self, user, file, description, cookie):
        """
        called when someone tries to send a file to us
        """
        pass

class OSCARService(SNACBased):
    def __init__(self, bos, cookie, d = None):
        SNACBased.__init__(self, cookie)
        self.bos = bos
        self.d = d

    def connectionLost(self, reason):
        for k,v in self.bos.services.items():
            if v == self:
                del self.bos.services[k]
                return

    def clientReady(self):
        SNACBased.clientReady(self)
        if self.d:
            self.d.callback(self)
            self.d = None

class ChatNavService(OSCARService):
    snacFamilies = {
        0x01:(3, 0x0010, 0x059b),
        0x0d:(1, 0x0010, 0x059b)
    }
    def oscar_01_07(self, snac):
        # rate info
        self.sendSNACnr(0x01, 0x08, '\000\001\000\002\000\003\000\004\000\005')
        self.sendSNACnr(0x0d, 0x02, '')

    def oscar_0D_09(self, snac):
        self.clientReady()

    def getChatInfo(self, exchange, name, instance):
        d = defer.Deferred()
        self.sendSNAC(0x0d,0x04,struct.pack('!HB',exchange,len(name)) + \
                      name + struct.pack('!HB',instance,2)). \
            addCallback(self._cbGetChatInfo, d)
        return d

    def _cbGetChatInfo(self, snac, d):
        data = snac[5][4:]
        exchange, length = struct.unpack('!HB',data[:3])
        fullName = data[3:3+length]
        instance = struct.unpack('!H',data[3+length:5+length])[0]
        tlvs = readTLVs(data[8+length:])
        shortName = tlvs[0x6a]
        inviteTime = struct.unpack('!L',tlvs[0xca])[0]
        info = (exchange,fullName,instance,shortName,inviteTime)
        d.callback(info)

    def createChat(self, shortName):
        #d = defer.Deferred()
        data = '\x00\x04\x06create\xff\xff\x01\x00\x03'
        data = data + TLV(0xd7, 'en')
        data = data + TLV(0xd6, 'us-ascii')
        data = data + TLV(0xd3, shortName)
        return self.sendSNAC(0x0d, 0x08, data).addCallback(self._cbCreateChat)
        #return d

    def _cbCreateChat(self, snac): #d):
        exchange, length = struct.unpack('!HB',snac[5][4:7])
        fullName = snac[5][7:7+length]
        instance = struct.unpack('!H',snac[5][7+length:9+length])[0]
        #d.callback((exchange, fullName, instance))
        return exchange, fullName, instance

class ChatService(OSCARService):
    snacFamilies = {
        0x01:(3, 0x0010, 0x059b),
        0x0E:(1, 0x0010, 0x059b)
    }
    def __init__(self,bos,cookie, d = None):
        OSCARService.__init__(self,bos,cookie,d)
        self.exchange = None
        self.fullName = None
        self.instance = None
        self.name = None
        self.members = None

    clientReady = SNACBased.clientReady # we'll do our own callback

    def oscar_01_07(self,snac):
        self.sendSNAC(0x01,0x08,"\000\001\000\002\000\003\000\004\000\005")
        self.clientReady()

    def oscar_0E_02(self, snac):
#        try: # this is EVIL
#            data = snac[3][4:]
#            self.exchange, length = struct.unpack('!HB',data[:3])
#            self.fullName = data[3:3+length]
#            self.instance = struct.unpack('!H',data[3+length:5+length])[0]
#            tlvs = readTLVs(data[8+length:])
#            self.name = tlvs[0xd3]
#            self.d.callback(self)
#        except KeyError:
        data = snac[3]
        self.exchange, length = struct.unpack('!HB',data[:3])
        self.fullName = data[3:3+length]
        self.instance = struct.unpack('!H',data[3+length:5+length])[0]
        tlvs = readTLVs(data[8+length:])
        self.name = tlvs[0xd3]
        self.d.callback(self)

    def oscar_0E_03(self,snac):
        users=[]
        rest=snac[3]
        while rest:
            user, rest = self.bos.parseUser(rest, 1)
            users.append(user)
        if not self.fullName:
            self.members = users
        else:
            self.members.append(users[0])
            self.bos.chatMemberJoined(self,users[0])

    def oscar_0E_04(self,snac):
        user=self.bos.parseUser(snac[3])
        for u in self.members:
            if u.name == user.name: # same person!
                self.members.remove(u)
        self.bos.chatMemberLeft(self,user)

    def oscar_0E_06(self,snac):
        data = snac[3]
        user,rest=self.bos.parseUser(snac[3][14:],1)
        tlvs = readTLVs(rest[8:])
        message=tlvs[1]
        self.bos.chatReceiveMessage(self,user,message)

    def sendMessage(self,message):
        tlvs=TLV(0x02,"us-ascii")+TLV(0x03,"en")+TLV(0x01,message)
        self.sendSNAC(0x0e,0x05,
                      "\x46\x30\x38\x30\x44\x00\x63\x00\x00\x03\x00\x01\x00\x00\x00\x06\x00\x00\x00\x05"+
                      struct.pack("!H",len(tlvs))+
                      tlvs)

    def leaveChat(self):
        self.disconnect()

class OscarAuthenticator(OscarConnection):
    BOSClass = BOSConnection
    def __init__(self,username,password,deferred=None,icq=0):
        self.username=username
        self.password=password
        self.deferred=deferred
        self.icq=0 # icq mode is disabled
        #if icq and self.BOSClass==BOSConnection:
        #    self.BOSClass=ICQConnection

    def oscar_(self,flap):
        if not self.icq:
            self.sendFLAP("\000\000\000\001", 0x01)
            self.sendFLAP(SNAC(0x17,0x06,0,
                               TLV(TLV_USERNAME,self.username)+
                               TLV(0x004B,'')))
            self.state="Key"
        else:
            encpass=encryptPasswordICQ(self.password)
            self.sendFLAP('\000\000\000\001'+
                          TLV(0x01,self.username)+
                          TLV(0x02,encpass)+
                          TLV(0x03,'ICQ Inc. - Product of ICQ (TM).2001b.5.15.1.3638.85')+
                          TLV(0x16,"\x01\x0a")+
                          TLV(0x17,"\x00\x05")+
                          TLV(0x18,"\x00\x12")+
                          TLV(0x19,"\000\001")+
                          TLV(0x1a,"\x0eK")+
                          TLV(0x14,"\x00\x00\x00U")+
                          TLV(0x0f,"en")+
                          TLV(0x0e,"us"),0x01)
            self.state="Cookie"

    def oscar_Key(self,data):
        snac=readSNAC(data[1])
        key=snac[5][2:]
        encpass=encryptPasswordMD5(self.password,key)
        self.sendFLAP(SNAC(0x17,0x02,0,
                           TLV(TLV_USERNAME,self.username)+
                           TLV(TLV_PASSWORD,encpass)+
                           TLV(0x004C, '')+ # unknown
                           TLV(TLV_CLIENTNAME,"AOL Instant Messenger (SM), version 4.8.2790/WIN32")+
                           TLV(0x0016,"\x01\x09")+
                           TLV(TLV_CLIENTMAJOR,"\000\004")+
                           TLV(TLV_CLIENTMINOR,"\000\010")+
                           TLV(0x0019,"\000\000")+
                           TLV(TLV_CLIENTSUB,"\x0A\xE6")+
                           TLV(0x0014,"\x00\x00\x00\xBB")+
                           TLV(TLV_LANG,"en")+
                           TLV(TLV_COUNTRY,"us")+
                           TLV(TLV_USESSI,"\001")))
        return "Cookie"

    def oscar_Cookie(self,data):
        snac=readSNAC(data[1])
        if self.icq:
            i=snac[5].find("\000")
            snac[5]=snac[5][i:]
        tlvs=readTLVs(snac[5])
        if tlvs.has_key(6):
            self.cookie=tlvs[6]
            server,port=string.split(tlvs[5],":")
            c = protocol.ClientCreator(reactor, self.BOSClass, self.username, self.cookie)
            d = c.connectTCP(server, int(port))
            d.addErrback(lambda x: log.msg("Connection Failed! Reason: %s" % x))
            d.chainDeferred(self.deferred)
            self.disconnect()
        elif tlvs.has_key(8):
            errorcode=tlvs[8]
            errorurl=tlvs[4]
            if errorcode=='\000\030':
                error="You are attempting to sign on again too soon.  Please try again later."
            elif errorcode=='\000\005':
                error="Invalid Username or Password."
            else: error=repr(errorcode)
            self.error(error,errorurl)
        else:
            log.msg('hmm, weird tlvs for %s cookie packet' % str(self))
            log.msg(tlvs)
            log.msg('snac')
            log.msg(str(snac))
        return "None"

    def oscar_None(self,data): pass

    def error(self,error,url):
        log.msg("ERROR! %s %s" % (error,url))
        if self.deferred: self.deferred.errback((error,url))
        self.transport.loseConnection()

FLAP_CHANNEL_NEW_CONNECTION = 0x01
FLAP_CHANNEL_DATA = 0x02
FLAP_CHANNEL_ERROR = 0x03
FLAP_CHANNEL_CLOSE_CONNECTION = 0x04

SERVICE_CHATNAV = 0x0d
SERVICE_CHAT = 0x0e
serviceClasses = {
    SERVICE_CHATNAV:ChatNavService,
    SERVICE_CHAT:ChatService
}
TLV_USERNAME = 0x0001
TLV_CLIENTNAME = 0x0003
TLV_COUNTRY = 0x000E
TLV_LANG = 0x000F
TLV_CLIENTMAJOR = 0x0017
TLV_CLIENTMINOR = 0x0018
TLV_CLIENTSUB = 0x001A
TLV_PASSWORD = 0x0025
TLV_USESSI = 0x004A

CAP_ICON = '\011F\023FL\177\021\321\202"DEST\000\000'
CAP_VOICE = '\011F\023AL\177\021\321\202"DEST\000\000'
CAP_IMAGE = '\011F\023EL\177\021\321\202"DEST\000\000'
CAP_CHAT = 't\217$ b\207\021\321\202"DEST\000\000'
CAP_GET_FILE = '\011F\023HL\177\021\321\202"DEST\000\000'
CAP_SEND_FILE = '\011F\023CL\177\021\321\202"DEST\000\000'
CAP_GAMES = '\011F\023GL\177\021\321\202"DEST\000\000'
CAP_SEND_LIST = '\011F\023KL\177\021\321\202"DEST\000\000'
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