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# -*- test-case-name: twisted.words.test -*-
# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.


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

Maintainer: Paul Swartz
"""

import struct
import string
import socket
import random
import types
import re

from twisted.internet import reactor, defer, protocol
from twisted.python import log
from twisted.python.hashlib import md5

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()
    m.update(key)
    m.update(md5(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,'&nbsp;',' ')
    text=string.replace(text,'&#34;','"')
    text=string.replace(text,'&amp;','&')
    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
                if v[2] == '\x00':
                    self.icqStatus = 'online'
                elif v[2] == '\x01':
                    self.icqStatus = 'away'
                elif v[2] == '\x02':
                    self.icqStatus = 'dnd'
                elif v[2] == '\x04':
                    self.icqStatus = 'out'
                elif v[2] == '\x10':
                    self.icqStatus = 'busy'
                else:
                    self.icqStatus = 'unknown'
            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()), '\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][:2])[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
                if not tlvs.has_key(0xcb):
                    continue # this happens with ICQ
                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 groupID is None:
            if isinstance(item, SSIGroup):
                groupID = 0
            else:
                groupID = item.group.group.findIDFor(item.group)
        if buddyID is None:
            buddyID = item.group.findIDFor(item)
        return self.sendSNAC(0x13,0x08, item.oscarRep(groupID, buddyID))

    def modifyItemSSI(self, item, groupID = None, buddyID = None):
        if groupID is None:
            if isinstance(item, SSIGroup):
                groupID = 0
            else:
                groupID = item.group.group.findIDFor(item.group)
        if buddyID is None:
            buddyID = item.group.findIDFor(item)
        return self.sendSNAC(0x13,0x09, item.oscarRep(groupID, buddyID))

    def delItemSSI(self, item, groupID = None, buddyID = None):
        if groupID is None:
            if isinstance(item, SSIGroup):
                groupID = 0
            else:
                groupID = item.group.group.findIDFor(item.group)
        if buddyID is None:
            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 is not None:
            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
                part[0] = part[0].encode('utf-8')
            elif 'iso-8859-1' in part[1:]:
                charSet = 3
                part[0] = part[0].encode('iso-8859-1')
            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):
        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:
            return self.connectService(SERVICE_CHATNAV,1).addCallback(lambda s: s.createChat(shortName))


    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=icq # 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.5.18.1.3659.85')+
                          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],":")
            d = self.connectToBOS(server, int(port))
            d.addErrback(lambda x: log.msg("Connection Failed! Reason: %s" % x))
            if self.deferred:
                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 connectToBOS(self, server, port):
        c = protocol.ClientCreator(reactor, self.BOSClass, self.username, self.cookie)
        return c.connectTCP(server, int(port))

    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'
CAP_SERV_REL = '\011F\023IL\177\021\321\202"DEST\000\000'