client_connect.c

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/*
 * Copyright (C) 1998,1999,2000,2001  Ross Combs ([e-mail])
 *
 * 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.
 */
#include "common/setup_before.h"
#include <stdio.h>
#ifdef STDC_HEADERS
# include <stdlib.h>
#endif
#ifdef HAVE_MEMORY_H
# include <memory.h>
#endif
#include "compat/memset.h"
#include "compat/memcpy.h"
#include <ctype.h>
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#include <errno.h>
#include "compat/strerror.h"
#ifdef TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# ifdef HAVE_SYS_TIME_H
#  include <sys/time.h>
# else
#  include <time.h>
# endif
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include "compat/gethostname.h"
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#include "compat/socket.h"
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#include "compat/netinet_in.h"
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#include "compat/inet_ntoa.h"
#ifdef HAVE_NETDB_H
# include <netdb.h>
#endif
#include "compat/psock.h"
#include "common/packet.h"
#include "common/init_protocol.h"
#include "common/udp_protocol.h"
#include "common/bnet_protocol.h"
#include "common/file_protocol.h"
#include "common/tag.h"
#include "common/bn_type.h"
#include "common/field_sizes.h"
#include "common/bnethash.h"
#include "common/bnethashconv.h"
#include "common/util.h"
#ifdef CLIENTDEBUG
# include "common/eventlog.h"
#endif
#include "client.h"
#include "udptest.h"
#include "common/bnettime.h"
#include "common/proginfo.h"
#include "client_connect.h"
#include "common/setup_after.h"


#define COMPNAMELEN 128

#ifdef CLIENTDEBUG
# define dprintf printf
#else
# define dprintf if (0) printf
#endif


static int key_interpret(char const * cdkey, unsigned int * productid, unsigned int * keyvalue1, unsigned int * keyvalue2)
{
    /* FIXME: implement... have example code from Eurijk! */
    *productid = 0;
    *keyvalue1 = 0;
    *keyvalue2 = 0;
    return 0;
}


static int get_defversioninfo(char const * progname, char const * clienttag, unsigned int * versionid, unsigned int * gameversion, char const * * exeinfo, unsigned int * checksum)
{
    if (strcmp(clienttag,CLIENTTAG_DIABLORTL)==0)
    {
	*versionid = CLIENT_VERSIONID_DRTL;
	*gameversion = CLIENT_GAMEVERSION_DRTL;
	*exeinfo = CLIENT_EXEINFO_DRTL;
	*checksum = CLIENT_CHECKSUM_DRTL;
	return 0;
    }
    
    if (strcmp(clienttag,CLIENTTAG_STARCRAFT)==0)
    {
	*versionid = CLIENT_VERSIONID_STAR;
	*gameversion = CLIENT_GAMEVERSION_STAR;
	*exeinfo = CLIENT_EXEINFO_STAR;
	*checksum = CLIENT_CHECKSUM_STAR;
	return 0;
    }
    
    if (strcmp(clienttag,CLIENTTAG_SHAREWARE)==0)
    {
	*versionid = CLIENT_VERSIONID_SSHR;
	*gameversion = CLIENT_GAMEVERSION_SSHR;
	*exeinfo = CLIENT_EXEINFO_SSHR;
	*checksum = CLIENT_CHECKSUM_SSHR;
	return 0;
    }
    
    if (strcmp(clienttag,CLIENTTAG_BROODWARS)==0)
    {
	*versionid = CLIENT_VERSIONID_SEXP;
	*gameversion = CLIENT_GAMEVERSION_SEXP;
	*exeinfo = CLIENT_EXEINFO_SEXP;
	*checksum = CLIENT_CHECKSUM_SEXP;
	return 0;
    }
    
    if (strcmp(clienttag,CLIENTTAG_WARCIIBNE)==0)
    {
	*versionid = CLIENT_VERSIONID_W2BN;
	*gameversion = CLIENT_GAMEVERSION_W2BN;
	*exeinfo = CLIENT_EXEINFO_W2BN;
	*checksum = CLIENT_CHECKSUM_W2BN;
	return 0;
    }
    
    if (strcmp(clienttag,CLIENTTAG_DIABLO2DV)==0)
    {
	*versionid = CLIENT_VERSIONID_D2DV;
	*gameversion = CLIENT_GAMEVERSION_D2DV;
	*exeinfo = CLIENT_EXEINFO_D2DV;
	*checksum = CLIENT_CHECKSUM_D2DV;
	return 0;
    }
    
    if (strcmp(clienttag,CLIENTTAG_DIABLO2XP)==0)
    {
	*versionid = CLIENT_VERSIONID_D2XP;
	*gameversion = CLIENT_GAMEVERSION_D2XP;
	*exeinfo = CLIENT_EXEINFO_D2XP;
	*checksum = CLIENT_CHECKSUM_D2XP;
	return 0;
    }
    
    if (strcmp(clienttag,CLIENTTAG_WARCRAFT3)==0 ||
	strcmp(clienttag,CLIENTTAG_WAR3XP)==0)
    {
	*versionid = CLIENT_VERSIONID_WAR3;
	*gameversion = CLIENT_GAMEVERSION_WAR3;
	*exeinfo = CLIENT_EXEINFO_WAR3;
	*checksum = CLIENT_CHECKSUM_WAR3;
	return 0;
    }
    
    *versionid = 0;
    *gameversion = 0;
    *exeinfo = "";
    *checksum = 0;
    
    fprintf(stderr,"%s: unsupported clienttag \"%s\"\n",progname,clienttag);
    // aaron: dunno what we should return in case of this.. but returning nothing was definetly wrong
    return -1;
}


extern int client_connect(char const * progname, char const * servname, unsigned short servport, char const * cdowner, char const * cdkey, char const * clienttag, struct sockaddr_in * saddr, unsigned int * sessionkey, unsigned int * sessionnum, char const * archtag, char const * gamelang)
{
    struct hostent * host;
    char const *     username;
    int              sd;
    t_packet *       packet;
    t_packet *       rpacket;
    char             compname[COMPNAMELEN];
    int              lsock;
    unsigned short   lsock_port;
    unsigned int     versionid;
    unsigned int     gameversion;
    char const *     exeinfo;
    unsigned int     checksum;
    
    if (!progname)
    {
	fprintf(stderr,"got NULL progname\n");
	return -1;
    }
    if (!saddr)
    {
	fprintf(stderr,"%s: got NULL saddr\n",progname);
	return -1;
    }
    if (!sessionkey)
    {
	fprintf(stderr,"%s: got NULL sessionkey\n",progname);
	return -1;
    }
    if (!sessionnum)
    {
	fprintf(stderr,"%s: got NULL sessionnum\n",progname);
	return -1;
    }
    
    if (psock_init()<0)
    {
	fprintf(stderr,"%s: could not inialialize socket functions\n",progname);
	return -1;
    }
    
    if (!(host = gethostbyname(servname)))
    {
	fprintf(stderr,"%s: unknown host \"%s\"\n",progname,servname);
	return -1;
    }
    if (host->h_addrtype!=PSOCK_AF_INET)
	fprintf(stderr,"%s: host \"%s\" is not in IPv4 address family\n",progname,servname);
    
    if (gethostname(compname,COMPNAMELEN)<0)
    {
	fprintf(stderr,"%s: could not get host name (gethostname: %s)\n",progname,pstrerror(errno));
	return -1;
    }
#ifdef HAVE_GETLOGIN
    if (!(username = getlogin()))
#endif
    {
	username = "unknown";
	dprintf("%s: could not get login name, using \"%s\" (getlogin: %s)\n",progname,username,pstrerror(errno));
    }