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/*
Jabber Protocol Plugin for Miranda IM
Copyright ( C ) 2002-04 Santithorn Bunchua
Copyright ( C ) 2005-06 George Hazan
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; either version 2
of the License, or ( at your option ) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
File name : $Source: /cvsroot/miranda/miranda/protocols/JabberG/jabber_byte.cpp,v $
Revision : $Revision: 3398 $
Last change on : $Date: 2006-07-31 15:37:09 +0400 (Пнд, 31 Июл 2006) $
Last change by : $Author: ghazan $
*/
#include "jabber.h"
#include "jabber_iq.h"
#include "jabber_byte.h"
#define JABBER_NETWORK_BUFFER_SIZE 4096
///////////////// Bytestream sending /////////////////////////
static void JabberByteInitiateResult( XmlNode *iqNode, void *userdata );
static void JabberByteSendConnection( HANDLE hNewConnection, DWORD dwRemoteIP );
static int JabberByteSendParse( HANDLE hConn, JABBER_BYTE_TRANSFER *jbt, char* buffer, int datalen );
void JabberByteFreeJbt( JABBER_BYTE_TRANSFER *jbt )
{
if ( !jbt ) return;
if ( jbt->srcJID ) mir_free( jbt->srcJID );
if ( jbt->dstJID ) mir_free( jbt->dstJID );
if ( jbt->streamhostJID ) mir_free( jbt->streamhostJID );
if ( jbt->iqId ) mir_free( jbt->iqId );
if ( jbt->sid ) mir_free( jbt->sid );
if ( jbt->iqNode ) delete jbt->iqNode;
mir_free( jbt );
}
void __cdecl JabberByteSendThread( JABBER_BYTE_TRANSFER *jbt )
{
BOOL bDirect, bProxy;
char* localAddr;
struct in_addr in;
DBVARIANT dbv;
NETLIBBIND nlb = {0};
TCHAR szPort[8];
int iqId;
JABBER_LIST_ITEM *item;
HANDLE hEvent;
JabberLog( "Thread started: type=bytestream_send" );
bDirect = JGetByte( "BsDirect", TRUE );
bProxy = JGetByte( "BsProxy", FALSE );
iqId = JabberSerialNext();
JabberIqAdd( iqId, IQ_PROC_NONE, JabberByteInitiateResult );
XmlNodeIq iq( "set", iqId, jbt->dstJID );
XmlNode* query = iq.addQuery( "http://jabber.org/protocol/bytestreams" );
query->addAttr( "sid", jbt->sid );
if ( bDirect ) {
localAddr = NULL;
if ( JGetByte( "BsDirectManual", FALSE ) == TRUE ) {
if ( !DBGetContactSetting( NULL, jabberProtoName, "BsDirectAddr", &dbv )) {
localAddr = mir_strdup( dbv.pszVal );
JFreeVariant( &dbv );
}
}
if ( localAddr == NULL ) {
in.S_un.S_addr = jabberLocalIP;
localAddr = mir_strdup( inet_ntoa( in ));
}
nlb.cbSize = sizeof( NETLIBBIND );
nlb.pfnNewConnection = JabberByteSendConnection;
nlb.wPort = 0; // Use user-specified incoming port ranges, if available
jbt->hConn = ( HANDLE ) JCallService( MS_NETLIB_BINDPORT, ( WPARAM ) hNetlibUser, ( LPARAM )&nlb );
if ( jbt->hConn == NULL ) {
JabberLog( "Cannot allocate port for bytestream_send thread, thread ended." );
JabberByteFreeJbt( jbt );
return;
}
mir_sntprintf( szPort, SIZEOF( szPort ), _T("%d"), nlb.wPort );
item = JabberListAdd( LIST_BYTE, szPort );
item->jbt = jbt;
hEvent = CreateEvent( NULL, FALSE, FALSE, NULL );
jbt->hEvent = hEvent;
XmlNode* h = query->addChild( "streamhost" );
h->addAttr( "jid", jabberThreadInfo->fullJID ); h->addAttr( "host", localAddr ); h->addAttr( "port", nlb.wPort );
mir_free( localAddr );
}
JabberSend( jabberThreadInfo->s, iq );
if ( bDirect ) {
WaitForSingleObject( hEvent, INFINITE );
CloseHandle( hEvent );
jbt->hEvent = NULL;
jbt->pfnFinal(( jbt->state==JBT_DONE )?TRUE:FALSE, jbt->userdata );
if ( jbt->hConn != NULL )
Netlib_CloseHandle( jbt->hConn );
JabberByteFreeJbt( jbt );
JabberListRemove( LIST_BYTE, szPort );
}
JabberLog( "Thread ended: type=bytestream_send" );
}
static void JabberByteInitiateResult( XmlNode *iqNode, void *userdata )
{
TCHAR* type;
if (( type=JabberXmlGetAttrValue( iqNode, "type" )) == NULL ) return;
if ( !lstrcmp( type, _T("result"))) {
}
else if ( !lstrcmp( type, _T("error"))) {
}
}
static void JabberByteSendConnection( HANDLE hConn, DWORD dwRemoteIP )
{
SOCKET s;
SOCKADDR_IN saddr;
int len;
WORD localPort;
TCHAR szPort[8];
JABBER_BYTE_TRANSFER *jbt;
int recvResult, bytesParsed;
HANDLE hListen;
JABBER_LIST_ITEM *item;
char* buffer;
int datalen;
localPort = 0;
if (( s=JCallService( MS_NETLIB_GETSOCKET, ( WPARAM ) hConn, 0 )) != INVALID_SOCKET ) {
len = sizeof( saddr );
if ( getsockname( s, ( SOCKADDR * ) &saddr, &len ) != SOCKET_ERROR )
localPort = ntohs( saddr.sin_port );
}
if ( localPort == 0 ) {
JabberLog( "bytestream_send_connection unable to determine the local port, connection closed." );
Netlib_CloseHandle( hConn );
return;
}
mir_sntprintf( szPort, SIZEOF( szPort ), _T("%d"), localPort );
JabberLog( "bytestream_send_connection incoming connection accepted: local_port=" TCHAR_STR_PARAM, szPort );
if (( item=JabberListGetItemPtr( LIST_BYTE, szPort )) == NULL ) {
JabberLog( "No bytestream session is currently active, connection closed." );
Netlib_CloseHandle( hConn );
return;
}
jbt = item->jbt;
if (( buffer=( char* )mir_alloc( JABBER_NETWORK_BUFFER_SIZE )) == NULL ) {
JabberLog( "bytestream_send cannot allocate network buffer, connection closed." );
jbt->state = JBT_ERROR;
Netlib_CloseHandle( hConn );
if ( jbt->hEvent != NULL ) SetEvent( jbt->hEvent );
return;
}
hListen = jbt->hConn;
jbt->hConn = hConn;
jbt->state = JBT_INIT;
datalen = 0;
while ( jbt->state!=JBT_DONE && jbt->state!=JBT_ERROR ) {
recvResult = Netlib_Recv( hConn, buffer+datalen, JABBER_NETWORK_BUFFER_SIZE-datalen, 0 );
if ( recvResult <= 0 ) break;
datalen += recvResult;
bytesParsed = JabberByteSendParse( hConn, jbt, buffer, datalen );
if ( bytesParsed < datalen )
memmove( buffer, buffer+bytesParsed, datalen-bytesParsed );
datalen -= bytesParsed;
}
if ( jbt->hConn ) Netlib_CloseHandle( jbt->hConn );
JabberLog( "bytestream_send_connection closing connection" );
jbt->hConn = hListen;
mir_free( buffer );
if ( jbt->hEvent != NULL ) SetEvent( jbt->hEvent );
}
static int JabberByteSendParse( HANDLE hConn, JABBER_BYTE_TRANSFER *jbt, char* buffer, int datalen )
{
int nMethods;
BYTE data[10];
int i;
char* str;
switch ( jbt->state ) {
case JBT_INIT:
// received:
// 00-00 ver ( 0x05 )
// 01-01 nmethods
// 02-xx list of methods ( nmethods bytes )
// send:
// 00-00 ver ( 0x05 )
// 01-01 select method ( 0=no auth required )
if ( datalen>=2 && buffer[0]==5 && buffer[1]+2==datalen ) {
nMethods = buffer[1];
for ( i=0; i<nMethods && buffer[2+i]!=0; i++ );
if ( i < nMethods ) {
data[1] = 0;
jbt->state = JBT_CONNECT;
}
else {
data[1] = 0xff;
jbt->state = JBT_ERROR;
}
data[0] = 5;
Netlib_Send( hConn, ( char* )data, 2, 0 );
}
else jbt->state = JBT_ERROR;
break;
case JBT_CONNECT:
// received:
// 00-00 ver ( 0x05 )
// 01-01 cmd ( 1=connect )
// 02-02 reserved ( 0 )
// 03-03 address type ( 3 )
// 04-44 dst.addr ( 41 bytes: 1-byte length, 40-byte SHA1 hash of [sid,srcJID,dstJID] )
// 45-46 dst.port ( 0 )
// send:
// 00-00 ver ( 0x05 )
// 01-01 reply ( 0=success,2=not allowed )
// 02-02 reserved ( 0 )
// 03-03 address type ( 1=IPv4 address )
// 04-07 bnd.addr server bound address
// 08-09 bnd.port server bound port
if ( datalen==47 && *(( DWORD* )buffer )==0x03000105 && buffer[4]==40 && *(( WORD* )( buffer+45 ))==0 ) {
TCHAR text[256];
mir_sntprintf( text, SIZEOF( text ), _T("%s%s%s"), jbt->sid, jbt->srcJID, jbt->dstJID );
char* szAuthString = t2a( text );
JabberLog( "Auth: '%s'", szAuthString );
if (( str = JabberSha1( szAuthString )) != NULL ) {
for ( i=0; i<40 && buffer[i+5]==str[i]; i++ );
mir_free( str );
ZeroMemory( data, 10 );
data[1] = ( i>=20 )?0:2;
data[0] = 5;
data[3] = 1;
Netlib_Send( hConn, ( char* )data, 10, 0 );
if ( i>=20 && jbt->pfnSend( hConn, jbt->userdata )==TRUE )
jbt->state = JBT_DONE;
else
jbt->state = JBT_ERROR;
}
mir_free( szAuthString );
}
else
jbt->state = JBT_ERROR;
break;
}
return datalen;
}
///////////////// Bytestream receiving /////////////////////////
static int JabberByteReceiveParse( HANDLE hConn, JABBER_BYTE_TRANSFER *jbt, char* buffer, int datalen );
void __cdecl JabberByteReceiveThread( JABBER_BYTE_TRANSFER *jbt )
{
XmlNode *iqNode, *queryNode, *n;
TCHAR *from, *to, *sid, *szId, *szHost, *szPort, *str;
int i;
WORD port;
HANDLE hConn;
char data[3];
char* buffer;
int datalen, bytesParsed, recvResult;
BOOL validStreamhost;
if ( jbt == NULL ) return;
if (( iqNode=jbt->iqNode )!=NULL &&
( from=JabberXmlGetAttrValue( iqNode, "from" ))!=NULL &&
( to=JabberXmlGetAttrValue( iqNode, "to" ))!=NULL &&
( queryNode=JabberXmlGetChild( iqNode, "query" ))!=NULL &&
( sid=JabberXmlGetAttrValue( queryNode, "sid" ))!=NULL &&
( n=JabberXmlGetChild( queryNode, "streamhost" ))!=NULL ) {
szId = JabberXmlGetAttrValue( iqNode, "id" );
jbt->iqId = ( szId ) ? mir_tstrdup( szId ):NULL;
jbt->srcJID = mir_tstrdup( from );
jbt->dstJID = mir_tstrdup( to );
jbt->sid = mir_tstrdup( sid );
if (( buffer=( char* )mir_alloc( JABBER_NETWORK_BUFFER_SIZE )) == NULL ) {
JabberLog( "bytestream_send cannot allocate network buffer, connection closed." );
XmlNodeIq iq( "error", jbt->iqId, jbt->srcJID );
XmlNode* e = iq.addChild( "error" ); e->addAttr( "code", 406 ); e->addAttr( "type", "auth" );
XmlNode* na = e->addChild( "not-acceptable" ); na->addAttr( "xmlns", "urn:ietf:params:xml:ns:xmpp-stanzas" );
JabberSend( jabberThreadInfo->s, iq );
JabberByteFreeJbt( jbt );
return;
}
jbt->state = JBT_INIT;
validStreamhost = FALSE;
for ( i=1; ( n=JabberXmlGetNthChild( queryNode, "streamhost", i ))!=NULL; i++ ) {
if (( szHost=JabberXmlGetAttrValue( n, "host" ))!=NULL &&
( szPort=JabberXmlGetAttrValue( n, "port" ))!=NULL &&
( str=JabberXmlGetAttrValue( n, "jid" ))!=NULL ) {
port = ( WORD )_ttoi( szPort );
if ( jbt->streamhostJID ) mir_free( jbt->streamhostJID );
jbt->streamhostJID = mir_tstrdup( str );
JabberLog( "bytestream_recv connecting to " TCHAR_STR_PARAM ":%d", szHost, port );
NETLIBOPENCONNECTION nloc = { 0 };
nloc.cbSize = sizeof( nloc );
#if defined( _UNICODE )
nloc.szHost = u2a(szHost);
#else
nloc.szHost = szHost;
#endif
nloc.wPort = port;
hConn = ( HANDLE ) JCallService( MS_NETLIB_OPENCONNECTION, ( WPARAM ) hNetlibUser, ( LPARAM )&nloc );
#if defined( _UNICODE )
mir_free((void*)nloc.szHost);
#endif
if ( hConn == NULL ) {
JabberLog( "bytestream_recv_connection connection failed ( %d ), try next streamhost", WSAGetLastError());
continue;
}
jbt->hConn = hConn;
data[0] = 5;
data[1] = 1;
data[2] = 0;
Netlib_Send( hConn, data, 3, 0 );
jbt->state = JBT_INIT;
datalen = 0;
while ( jbt->state!=JBT_DONE && jbt->state!=JBT_ERROR && jbt->state!=JBT_SOCKSERR ) {
recvResult = Netlib_Recv( hConn, buffer+datalen, JABBER_NETWORK_BUFFER_SIZE-datalen, 0 );
if ( recvResult <= 0 ) break;
datalen += recvResult;
bytesParsed = JabberByteReceiveParse( hConn, jbt, buffer, datalen );
if ( bytesParsed < datalen )
memmove( buffer, buffer+bytesParsed, datalen-bytesParsed );
datalen -= bytesParsed;
if ( jbt->state == JBT_RECVING ) validStreamhost = TRUE;
}
Netlib_CloseHandle( hConn );
JabberLog( "bytestream_recv_connection closing connection" );
}
if ( jbt->state==JBT_ERROR || validStreamhost==TRUE )
break;
JabberLog( "bytestream_recv_connection stream cannot be established, try next streamhost" );
}
mir_free( buffer );
jbt->pfnFinal(( jbt->state==JBT_DONE )?TRUE:FALSE, jbt->userdata );
if ( !validStreamhost ) {
JabberLog( "bytestream_recv_connection session not completed" );
XmlNodeIq iq( "error", jbt->iqId, jbt->srcJID );
XmlNode* e = iq.addChild( "error" ); e->addAttr( "code", 404 ); e->addAttr( "type", _T("cancel"));
XmlNode* na = e->addChild( "item-not-found" ); na->addAttr( "xmlns", "urn:ietf:params:xml:ns:xmpp-stanzas" );
JabberSend( jabberThreadInfo->s, iq );
} }
JabberByteFreeJbt( jbt );
JabberLog( "Thread ended: type=bytestream_recv" );
}
static int JabberByteReceiveParse( HANDLE hConn, JABBER_BYTE_TRANSFER *jbt, char* buffer, int datalen )
{
int bytesReceived, num = datalen;
switch ( jbt->state ) {
case JBT_INIT:
// received:
// 00-00 ver ( 0x05 )
// 01-01 selected method ( 0=no auth, 0xff=error )
// send:
// 00-00 ver ( 0x05 )
// 01-01 cmd ( 1=connect )
// 02-02 reserved ( 0 )
// 03-03 address type ( 3 )
// 04-44 dst.addr ( 41 bytes: 1-byte length, 40-byte SHA1 hash of [sid,srcJID,dstJID] )
// 45-46 dst.port ( 0 )
if ( datalen==2 && buffer[0]==5 && buffer[1]==0 ) {
BYTE data[47];
ZeroMemory( data, sizeof( data ));
*(( DWORD* )data ) = 0x03000105;
data[4] = 40;
TCHAR text[256];
mir_sntprintf( text, SIZEOF( text ), _T("%s%s%s"), jbt->sid, jbt->srcJID, jbt->dstJID );
char* szAuthString = t2a( text );
JabberLog( "Auth: '%s'", szAuthString );
char* szHash = JabberSha1( szAuthString );
strncpy(( char* )( data+5 ), szHash, 40 );
mir_free( szHash );
Netlib_Send( hConn, ( char* )data, 47, 0 );
jbt->state = JBT_CONNECT;
mir_free( szAuthString );
}
else jbt->state = JBT_SOCKSERR;
break;
case JBT_CONNECT:
// received:
// 00-00 ver ( 0x05 )
// 01-01 reply ( 0=success,2=not allowed )
// 02-02 reserved ( 0 )
// 03-03 address type ( 1=IPv4 address,3=host address )
// 04-mm bnd.addr server bound address ( 4-byte IP if IPv4, 1-byte length + n-byte host address string if host address )
// nn-nn+1 bnd.port server bound port
if ( datalen>=5 && buffer[0]==5 && buffer[1]==0 && ( buffer[3]==1 || buffer[3]==3 )) {
if ( buffer[3]==1 && datalen>=10 )
num = 10;
else if ( buffer[3]==3 && datalen>=buffer[4]+7 )
num = buffer[4] + 7;
else {
jbt->state = JBT_SOCKSERR;
break;
}
jbt->state = JBT_RECVING;
XmlNodeIq iq( "result", jbt->iqId, jbt->srcJID );
XmlNode* query = iq.addQuery( "http://jabber.org/protocol/bytestreams" );
XmlNode* stream = query->addChild( "streamhost-used" ); stream->addAttr( "jid", jbt->streamhostJID );
JabberSend( jabberThreadInfo->s, iq );
}
else jbt->state = JBT_SOCKSERR;
break;
case JBT_RECVING:
bytesReceived = jbt->pfnRecv( hConn, jbt->userdata, buffer, datalen );
if ( bytesReceived < 0 )
jbt->state = JBT_ERROR;
else if ( bytesReceived == 0 )
jbt->state = JBT_DONE;
break;
}
return num;
}
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