src/bnetd/handle_d2cs.c

/*
 * Copyright (C) 2000,2001      Onlyer  (onlyer@263.net)
 *
 * 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 <stddef.h>
#include <stdlib.h>
#ifdef HAVE_STRING_H
# include <string.h>
#else
# ifdef HAVE_STRINGS_H
#  include <strings.h>
# endif
#endif
#include "compat/strcasecmp.h"

#include "connection.h"
#include "realm.h"
#include "account.h"
#include "account_wrap.h"
#include "game.h"
#include "d2cs/d2cs_bnetd_protocol.h"
#include "common/bnethash.h"
#include "common/bnethashconv.h"
#include "common/eventlog.h"
#include "common/queue.h"
#include "common/packet.h"
#include "common/addr.h"
#include "common/bn_type.h"
#include "prefs.h"
#include "common/util.h"
#include "common/field_sizes.h"
#include "handle_d2cs.h"
#include "common/tag.h"
#include "common/xalloc.h"
#include "common/setup_after.h"

static int on_d2cs_accountloginreq(t_connection * c, t_packet const * packet);
static int on_d2cs_charloginreq(t_connection * c, t_packet const * packet);
static int on_d2cs_authreply(t_connection * c, t_packet const * packet);
static int on_d2cs_gameinforeply(t_connection * c, t_packet const * packet);

extern int handle_d2cs_packet(t_connection * c, t_packet const * packet)
{
        if (!c) {
                eventlog(eventlog_level_error,__FUNCTION__,"got NULL connection");
                return -1;
        }
        if (!packet) {
                eventlog(eventlog_level_error,__FUNCTION__,"got NULL packet");
                return -1;
        }
        if (packet_get_class(packet)!=packet_class_d2cs_bnetd) {
                eventlog(eventlog_level_error,__FUNCTION__,"got bad packet class %d",
                packet_get_class(packet));
                return -1;
        }
        switch (conn_get_state(c)) {
                case conn_state_connected:
                        switch (packet_get_type(packet)) {
                                case D2CS_BNETD_AUTHREPLY:
                                        on_d2cs_authreply(c,packet);
                                        break;
                                default:
                                        eventlog(eventlog_level_error,__FUNCTION__,
                                        "got unknown packet type %d",packet_get_type(packet));
                                        break;
                        }
                        break;
                case conn_state_loggedin:
                        switch (packet_get_type(packet)) {
                                case D2CS_BNETD_ACCOUNTLOGINREQ:
                                        on_d2cs_accountloginreq(c,packet);
                                        break;
                                case D2CS_BNETD_CHARLOGINREQ:
                                        on_d2cs_charloginreq(c,packet);
                                        break;
                                case D2CS_BNETD_GAMEINFOREPLY:
                                        on_d2cs_gameinforeply(c,packet);
                                        break;
                                default:
                                        eventlog(eventlog_level_error,__FUNCTION__,
                                        "got unknown packet type %d",packet_get_type(packet));
                                        break;
                        }
                        break;
                default:
                        eventlog(eventlog_level_error,__FUNCTION__,
                                "got unknown connection state %d",conn_get_state(c));
                        break;
        }
        return 0;
}

static int on_d2cs_authreply(t_connection * c, t_packet const * packet)
{
        t_packet        * rpacket;
        unsigned int    version;
        unsigned int    try_version;
        unsigned int    reply;
        char const      * realmname;
        t_realm         * realm;

        if (packet_get_size(packet)<sizeof(t_d2cs_bnetd_authreply)) {
                eventlog(eventlog_level_error,__FUNCTION__,"got bad packet size");
                return -1;
        }
        if (!(realmname=packet_get_str_const(packet,sizeof(t_d2cs_bnetd_authreply),REALM_NAME_LEN))) {
                eventlog(eventlog_level_error,__FUNCTION__,"got bad realmname");
                return -1;
        }
        if (!(realm=realmlist_find_realm(realmname))) {
                eventlog(eventlog_level_error,__FUNCTION__, "realm not found");
                return -1;
        }
        if (realm_get_name(realm) && strcasecmp(realmname,realm_get_name(realm))) {
                eventlog(eventlog_level_error,__FUNCTION__, "warn: realm name mismatch %s %s",
                        realm_get_name(realm),realmname);
        }

        version=prefs_get_d2cs_version();
        try_version=bn_int_get(packet->u.d2cs_bnetd_authreply.version);
        if (version && version != try_version) {
                eventlog(eventlog_level_error,__FUNCTION__,"d2cs version mismatch 0x%X - 0x%X",
                        try_version,version);
                reply=BNETD_D2CS_AUTHREPLY_BAD_VERSION;
        } else {
                reply=BNETD_D2CS_AUTHREPLY_SUCCEED;
        }

        if (reply==BNETD_D2CS_AUTHREPLY_SUCCEED) {
                eventlog(eventlog_level_info,__FUNCTION__,"d2cs %s authed",
                        addr_num_to_ip_str(conn_get_addr(c)));
                conn_set_state(c,conn_state_loggedin);
                if (prefs_allow_d2cs_setname()) realm_set_name(realm,realmname);
                realm_active(realm,c);
        } else {
                eventlog(eventlog_level_error,__FUNCTION__,"failed to auth d2cs %s",
                        addr_num_to_ip_str(conn_get_addr(c)));
        }
        if ((rpacket=packet_create(packet_class_d2cs_bnetd))) {
                packet_set_size(rpacket,sizeof(t_bnetd_d2cs_authreply));
                packet_set_type(rpacket,BNETD_D2CS_AUTHREPLY);
                bn_int_set(&rpacket->u.bnetd_d2cs_authreply.h.seqno,1);
                bn_int_set(&rpacket->u.bnetd_d2cs_authreply.reply,reply);
                conn_push_outqueue(c,rpacket);
                packet_del_ref(rpacket);
        }
        return 0;
}

static int on_d2cs_accountloginreq(t_connection * c, t_packet const * packet)
{
        unsigned int    sessionkey;
        unsigned int    sessionnum;
        unsigned int    salt;
        char const *    account;
        char const *    tname;
        t_connection    * client;
        int             reply;
        t_packet        * rpacket;
        struct
        {
                bn_int   salt;
                bn_int   sessionkey;
                bn_int   sessionnum;
                bn_int   secret;
                bn_int   passhash[5];
        } temp;
        t_hash       secret_hash;
        char const * pass_str;
        t_hash       passhash;
        t_hash       try_hash;

        if (packet_get_size(packet)<sizeof(t_d2cs_bnetd_accountloginreq)) {
                eventlog(eventlog_level_error,__FUNCTION__,"got bad packet size");
                return -1;
        }
        if (!(account=packet_get_str_const(packet,sizeof(t_d2cs_bnetd_accountloginreq),USER_NAME_MAX))) {
                eventlog(eventlog_level_error,__FUNCTION__,"missing or too long account name");
                return -1;
        }
        sessionkey=bn_int_get(packet->u.d2cs_bnetd_accountloginreq.sessionkey);
        sessionnum=bn_int_get(packet->u.d2cs_bnetd_accountloginreq.sessionnum);
        salt=bn_int_get(packet->u.d2cs_bnetd_accountloginreq.seqno);
        if (!(client=connlist_find_connection_by_sessionnum(sessionnum))) {
                eventlog(eventlog_level_error,__FUNCTION__,"sessionnum %d not found",sessionnum);
                reply=BNETD_D2CS_ACCOUNTLOGINREPLY_FAILED;
        } else if (sessionkey!=conn_get_sessionkey(client)) {
                eventlog(eventlog_level_error,__FUNCTION__,"sessionkey %d not match",sessionkey);
                reply=BNETD_D2CS_ACCOUNTLOGINREPLY_FAILED;
        } else if (!(tname=conn_get_username(client))) {
                eventlog(eventlog_level_error,__FUNCTION__,"got NULL username");
                reply=BNETD_D2CS_ACCOUNTLOGINREPLY_FAILED;
        } else if (strcasecmp(account,tname)) {
                eventlog(eventlog_level_error,__FUNCTION__,"username %s not match",account);
                reply=BNETD_D2CS_ACCOUNTLOGINREPLY_FAILED;
        } else {
                bn_int_set(&temp.salt,salt);
                bn_int_set(&temp.sessionkey,sessionkey);
                bn_int_set(&temp.sessionnum,sessionnum);
                bn_int_set(&temp.secret,conn_get_secret(client));
                pass_str=account_get_pass(conn_get_account(client));
                if (hash_set_str(&passhash,pass_str)<0) {
                        reply=BNETD_D2CS_ACCOUNTLOGINREPLY_FAILED;
                } else {
                        hash_to_bnhash((t_hash const *)&passhash,temp.passhash);
                        bnet_hash(&secret_hash,sizeof(temp),&temp);
                        bnhash_to_hash(packet->u.d2cs_bnetd_accountloginreq.secret_hash,&try_hash);
                        if (hash_eq(try_hash,secret_hash)==1) {
                                eventlog(eventlog_level_debug,__FUNCTION__,"user %s loggedin on d2cs",
                                        account);
                                reply=BNETD_D2CS_ACCOUNTLOGINREPLY_SUCCEED;
                        } else {
                                eventlog(eventlog_level_error,__FUNCTION__,"user %s hash not match",
                                        account);
                                reply=BNETD_D2CS_ACCOUNTLOGINREPLY_FAILED;
                        }
                }
        }
        if ((rpacket=packet_create(packet_class_d2cs_bnetd))) {
                packet_set_size(rpacket,sizeof(t_bnetd_d2cs_accountloginreply));
                packet_set_type(rpacket,BNETD_D2CS_ACCOUNTLOGINREPLY);
                bn_int_set(&rpacket->u.bnetd_d2cs_accountloginreply.h.seqno,
                        bn_int_get(packet->u.d2cs_bnetd_accountloginreq.h.seqno));
                bn_int_set(&rpacket->u.bnetd_d2cs_accountloginreply.reply,reply);
                conn_push_outqueue(c,rpacket);
                packet_del_ref(rpacket);
        }
        return 0;
}

#define CHAR_PORTRAIT_LEN       0x30
static int on_d2cs_charloginreq(t_connection * c, t_packet const * packet)
{
        t_connection *  client;
        char const *    charname;
        char const *    portrait;
        char const *    clienttag;
        char *  temp;
        unsigned int    sessionnum;
        t_realm *       realm;
        char const *    realmname;
        unsigned int    pos, reply;
        t_packet *      rpacket;
        char const *checknum;
        
        if (packet_get_size(packet)<sizeof(t_d2cs_bnetd_charloginreq)) {
                eventlog(eventlog_level_error,__FUNCTION__,"got bad packet size");
                return -1;
        }
        sessionnum=bn_int_get(packet->u.d2cs_bnetd_charloginreq.sessionnum);
        pos=sizeof(t_d2cs_bnetd_charloginreq);
        if (!(charname=packet_get_str_const(packet,pos,CHAR_NAME_LEN))) {
                eventlog(eventlog_level_error,__FUNCTION__,"got bad character name");
                return -1;
        }
        pos+=strlen(charname)+1;
        if (!(portrait=packet_get_str_const(packet,pos,CHAR_PORTRAIT_LEN))) {
                eventlog(eventlog_level_error,__FUNCTION__,"got bad character portrait");
                return -1;
        }
        
        /* get checknum generated by d2cs from packet, by sowater,20050401 */
        pos+=strlen(portrait)+1;
        if(!(checknum=packet_get_data_const(packet,pos,sizeof(char)))) {
                eventlog(eventlog_level_error,__FUNCTION__,"get bad checknum");
                return -1;
        }
        
        if (!(client=connlist_find_connection_by_sessionnum(sessionnum))) {
                eventlog(eventlog_level_error,__FUNCTION__,"user %d not found",sessionnum);
                reply = BNETD_D2CS_CHARLOGINREPLY_FAILED;
        } else if (!(clienttag=clienttag_uint_to_str(conn_get_clienttag(client)))) {
                eventlog(eventlog_level_error,__FUNCTION__,"got NULL clienttag");
                reply = BNETD_D2CS_CHARLOGINREPLY_FAILED;
        } else if (!(realm=conn_get_realm(client))) {
                eventlog(eventlog_level_error,__FUNCTION__,"got NULL realm");
                reply = BNETD_D2CS_CHARLOGINREPLY_FAILED;
        } else {
                char revtag[8];

                realmname = realm_get_name(realm);
                temp=xmalloc(strlen(clienttag)+strlen(realmname)+1+strlen(charname)+1+
                        strlen(portrait)+1);
                reply = BNETD_D2CS_CHARLOGINREPLY_SUCCEED;
                strcpy(revtag,clienttag);
                strreverse(revtag);
                sprintf(temp,"%4s%s,%s,%s",revtag,realmname,charname,portrait);
                conn_set_charname(client,charname);
                conn_set_realminfo(client,temp);
                xfree(temp);
                eventlog(eventlog_level_debug,__FUNCTION__,
                        "loaded portrait for character %s",charname);
        /* save checknum in t_connection, by sowater */
                if(conn_set_checknum(client,*checknum)<0) {
                        eventlog(eventlog_level_error,__FUNCTION__,"set checknum to connection fail");
                }
        
        
        }
        if ((rpacket=packet_create(packet_class_d2cs_bnetd))) {
                packet_set_size(rpacket,sizeof(t_bnetd_d2cs_charloginreply));
                packet_set_type(rpacket,BNETD_D2CS_CHARLOGINREPLY);
                bn_int_set(&rpacket->u.bnetd_d2cs_charloginreply.h.seqno,
                        bn_int_get(packet->u.d2cs_bnetd_charloginreq.h.seqno));
                bn_int_set(&rpacket->u.bnetd_d2cs_charloginreply.reply,reply);
                conn_push_outqueue(c,rpacket);
                packet_del_ref(rpacket);
        }
        return 0;
}

extern int handle_d2cs_init(t_connection * c)
{
        t_packet        * packet;

        if ((packet=packet_create(packet_class_d2cs_bnetd))) {
                packet_set_size(packet,sizeof(t_bnetd_d2cs_authreq));
                packet_set_type(packet,BNETD_D2CS_AUTHREQ);
                bn_int_set(&packet->u.bnetd_d2cs_authreq.h.seqno,1);
                bn_int_set(&packet->u.bnetd_d2cs_authreq.sessionnum,conn_get_sessionnum(c));
                conn_push_outqueue(c,packet);
                packet_del_ref(packet);
        }
        eventlog(eventlog_level_info,__FUNCTION__,"sent init packet to d2cs (sessionnum=%d)",
                conn_get_sessionnum(c));
        return 0;
}

extern int send_d2cs_gameinforeq(t_connection * c)
{
        t_packet        * packet;
        t_game          * game;
        t_realm         * realm;

        if (!(c))
        {
                eventlog(eventlog_level_error,__FUNCTION__,"got NULL conn");
                return -1;
        }
        
        if (!(game = conn_get_game(c)))
        {
                eventlog(eventlog_level_error,__FUNCTION__,"conn had NULL game");
                return -1;
        }

        if (!(realm = conn_get_realm(c)))
        {
                eventlog(eventlog_level_error,__FUNCTION__,"conn had NULL realm");
                return -1;
        }


        if ((packet=packet_create(packet_class_d2cs_bnetd))) {
                packet_set_size(packet,sizeof(t_bnetd_d2cs_gameinforeq));
                packet_set_type(packet,BNETD_D2CS_GAMEINFOREQ);
                bn_int_set(&packet->u.bnetd_d2cs_gameinforeq.h.seqno,0);
                packet_append_string(packet,game_get_name(game));
                conn_push_outqueue(realm_get_conn(realm),packet);
                packet_del_ref(packet);
        }
        return 0;
}

static int on_d2cs_gameinforeply(t_connection * c, t_packet const * packet)
{
        t_game *                game;
        char const *            gamename;
        unsigned int            difficulty;
        t_game_difficulty       diff;

        if (!(c)) {
                eventlog(eventlog_level_error,__FUNCTION__,"got NULL connection");
                return -1;
        }

        if (!(gamename = packet_get_str_const(packet,sizeof(t_d2cs_bnetd_gameinforeply),GAME_NAME_LEN))) 
        {
                eventlog(eventlog_level_error,__FUNCTION__,"missing or too long gamename");
                return -1;
        }

        if (!(game = gamelist_find_game(gamename,game_type_diablo2closed)))
        {
               eventlog(eventlog_level_error,__FUNCTION__,"reply for unknown game \"%s\"",gamename);
               return -1;
        }

        difficulty = bn_byte_get(packet->u.d2cs_bnetd_gameinforeply.difficulty);

        switch (difficulty)
        {
                case 0:
                        diff = game_difficulty_normal;
                        break;
                case 1:
                        diff = game_difficulty_nightmare;
                        break;
                case 2:
                        diff = game_difficulty_hell;
                        break;
                default: 
                        diff = game_difficulty_none;
        }

        game_set_difficulty(game,diff);
        
        return 0;       
}

1	sysadm	1.1	/*
2			* Copyright (C) 2000,2001 Onlyer (onlyer@263.net)
3			*
4			* This program is free software; you can redistribute it and/or
5			* modify it under the terms of the GNU General Public License
6			* as published by the Free Software Foundation; either version 2
7			* of the License, or (at your option) any later version.
8			*
9			* This program is distributed in the hope that it will be useful,
10			* but WITHOUT ANY WARRANTY; without even the implied warranty of
11			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12			* GNU General Public License for more details.
13			*
14			* You should have received a copy of the GNU General Public License
15			* along with this program; if not, write to the Free Software
16			* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17			*/
18			#include "common/setup_before.h"
19
20			#include <stddef.h>
21			#include <stdlib.h>
22			#ifdef HAVE_STRING_H
23			# include <string.h>
24			#else
25			# ifdef HAVE_STRINGS_H
26			# include <strings.h>
27			# endif
28			#endif
29			#include "compat/strcasecmp.h"
30
31			#include "connection.h"
32			#include "realm.h"
33			#include "account.h"
34			#include "account_wrap.h"
35			#include "game.h"
36			#include "d2cs/d2cs_bnetd_protocol.h"
37			#include "common/bnethash.h"
38			#include "common/bnethashconv.h"
39			#include "common/eventlog.h"
40			#include "common/queue.h"
41			#include "common/packet.h"
42			#include "common/addr.h"
43			#include "common/bn_type.h"
44			#include "prefs.h"
45			#include "common/util.h"
46			#include "common/field_sizes.h"
47			#include "handle_d2cs.h"
48			#include "common/tag.h"
49			#include "common/xalloc.h"
50			#include "common/setup_after.h"
51
52			static int on_d2cs_accountloginreq(t_connection * c, t_packet const * packet);
53			static int on_d2cs_charloginreq(t_connection * c, t_packet const * packet);
54			static int on_d2cs_authreply(t_connection * c, t_packet const * packet);
55			static int on_d2cs_gameinforeply(t_connection * c, t_packet const * packet);
56
57			extern int handle_d2cs_packet(t_connection * c, t_packet const * packet)
58			{
59			if (!c) {
60			eventlog(eventlog_level_error,__FUNCTION__,"got NULL connection");
61			return -1;
62			}
63			if (!packet) {
64			eventlog(eventlog_level_error,__FUNCTION__,"got NULL packet");
65			return -1;
66			}
67			if (packet_get_class(packet)!=packet_class_d2cs_bnetd) {
68			eventlog(eventlog_level_error,__FUNCTION__,"got bad packet class %d",
69			packet_get_class(packet));
70			return -1;
71			}
72			switch (conn_get_state(c)) {
73			case conn_state_connected:
74			switch (packet_get_type(packet)) {
75			case D2CS_BNETD_AUTHREPLY:
76			on_d2cs_authreply(c,packet);
77			break;
78			default:
79			eventlog(eventlog_level_error,__FUNCTION__,
80			"got unknown packet type %d",packet_get_type(packet));
81			break;
82			}
83			break;
84			case conn_state_loggedin:
85			switch (packet_get_type(packet)) {
86			case D2CS_BNETD_ACCOUNTLOGINREQ:
87			on_d2cs_accountloginreq(c,packet);
88			break;
89			case D2CS_BNETD_CHARLOGINREQ:
90			on_d2cs_charloginreq(c,packet);
91			break;
92			case D2CS_BNETD_GAMEINFOREPLY:
93			on_d2cs_gameinforeply(c,packet);
94			break;
95			default:
96			eventlog(eventlog_level_error,__FUNCTION__,
97			"got unknown packet type %d",packet_get_type(packet));
98			break;
99			}
100			break;
101			default:
102			eventlog(eventlog_level_error,__FUNCTION__,
103			"got unknown connection state %d",conn_get_state(c));
104			break;
105			}
106			return 0;
107			}
108
109			static int on_d2cs_authreply(t_connection * c, t_packet const * packet)
110			{
111			t_packet * rpacket;
112			unsigned int version;
113			unsigned int try_version;
114			unsigned int reply;
115			char const * realmname;
116			t_realm * realm;
117
118			if (packet_get_size(packet)<sizeof(t_d2cs_bnetd_authreply)) {
119			eventlog(eventlog_level_error,__FUNCTION__,"got bad packet size");
120			return -1;
121			}
122			if (!(realmname=packet_get_str_const(packet,sizeof(t_d2cs_bnetd_authreply),REALM_NAME_LEN))) {
123			eventlog(eventlog_level_error,__FUNCTION__,"got bad realmname");
124			return -1;
125			}
126			if (!(realm=realmlist_find_realm(realmname))) {
127			eventlog(eventlog_level_error,__FUNCTION__, "realm not found");
128			return -1;
129			}
130			if (realm_get_name(realm) && strcasecmp(realmname,realm_get_name(realm))) {
131			eventlog(eventlog_level_error,__FUNCTION__, "warn: realm name mismatch %s %s",
132			realm_get_name(realm),realmname);
133			}
134
135			version=prefs_get_d2cs_version();
136			try_version=bn_int_get(packet->u.d2cs_bnetd_authreply.version);
137			if (version && version != try_version) {
138			eventlog(eventlog_level_error,__FUNCTION__,"d2cs version mismatch 0x%X - 0x%X",
139			try_version,version);
140			reply=BNETD_D2CS_AUTHREPLY_BAD_VERSION;
141			} else {
142			reply=BNETD_D2CS_AUTHREPLY_SUCCEED;
143			}
144
145			if (reply==BNETD_D2CS_AUTHREPLY_SUCCEED) {
146			eventlog(eventlog_level_info,__FUNCTION__,"d2cs %s authed",
147			addr_num_to_ip_str(conn_get_addr(c)));
148			conn_set_state(c,conn_state_loggedin);
149			if (prefs_allow_d2cs_setname()) realm_set_name(realm,realmname);
150			realm_active(realm,c);
151			} else {
152			eventlog(eventlog_level_error,__FUNCTION__,"failed to auth d2cs %s",
153			addr_num_to_ip_str(conn_get_addr(c)));
154			}
155			if ((rpacket=packet_create(packet_class_d2cs_bnetd))) {
156			packet_set_size(rpacket,sizeof(t_bnetd_d2cs_authreply));
157			packet_set_type(rpacket,BNETD_D2CS_AUTHREPLY);
158			bn_int_set(&rpacket->u.bnetd_d2cs_authreply.h.seqno,1);
159			bn_int_set(&rpacket->u.bnetd_d2cs_authreply.reply,reply);
160			conn_push_outqueue(c,rpacket);
161			packet_del_ref(rpacket);
162			}
163			return 0;
164			}
165
166			static int on_d2cs_accountloginreq(t_connection * c, t_packet const * packet)
167			{
168			unsigned int sessionkey;
169			unsigned int sessionnum;
170			unsigned int salt;
171			char const * account;
172			char const * tname;
173			t_connection * client;
174			int reply;
175			t_packet * rpacket;
176			struct
177			{
178			bn_int salt;
179			bn_int sessionkey;
180			bn_int sessionnum;
181			bn_int secret;
182			bn_int passhash[5];
183			} temp;
184			t_hash secret_hash;
185			char const * pass_str;
186			t_hash passhash;
187			t_hash try_hash;
188
189			if (packet_get_size(packet)<sizeof(t_d2cs_bnetd_accountloginreq)) {
190			eventlog(eventlog_level_error,__FUNCTION__,"got bad packet size");
191			return -1;
192			}
193			if (!(account=packet_get_str_const(packet,sizeof(t_d2cs_bnetd_accountloginreq),USER_NAME_MAX))) {
194			eventlog(eventlog_level_error,__FUNCTION__,"missing or too long account name");
195			return -1;
196			}
197			sessionkey=bn_int_get(packet->u.d2cs_bnetd_accountloginreq.sessionkey);
198			sessionnum=bn_int_get(packet->u.d2cs_bnetd_accountloginreq.sessionnum);
199			salt=bn_int_get(packet->u.d2cs_bnetd_accountloginreq.seqno);
200			if (!(client=connlist_find_connection_by_sessionnum(sessionnum))) {
201			eventlog(eventlog_level_error,__FUNCTION__,"sessionnum %d not found",sessionnum);
202			reply=BNETD_D2CS_ACCOUNTLOGINREPLY_FAILED;
203			} else if (sessionkey!=conn_get_sessionkey(client)) {
204			eventlog(eventlog_level_error,__FUNCTION__,"sessionkey %d not match",sessionkey);
205			reply=BNETD_D2CS_ACCOUNTLOGINREPLY_FAILED;
206			} else if (!(tname=conn_get_username(client))) {
207			eventlog(eventlog_level_error,__FUNCTION__,"got NULL username");
208			reply=BNETD_D2CS_ACCOUNTLOGINREPLY_FAILED;
209			} else if (strcasecmp(account,tname)) {
210			eventlog(eventlog_level_error,__FUNCTION__,"username %s not match",account);
211			reply=BNETD_D2CS_ACCOUNTLOGINREPLY_FAILED;
212			} else {
213			bn_int_set(&temp.salt,salt);
214			bn_int_set(&temp.sessionkey,sessionkey);
215			bn_int_set(&temp.sessionnum,sessionnum);
216			bn_int_set(&temp.secret,conn_get_secret(client));
217			pass_str=account_get_pass(conn_get_account(client));
218			if (hash_set_str(&passhash,pass_str)<0) {
219			reply=BNETD_D2CS_ACCOUNTLOGINREPLY_FAILED;
220			} else {
221			hash_to_bnhash((t_hash const *)&passhash,temp.passhash);
222			bnet_hash(&secret_hash,sizeof(temp),&temp);
223			bnhash_to_hash(packet->u.d2cs_bnetd_accountloginreq.secret_hash,&try_hash);
224			if (hash_eq(try_hash,secret_hash)==1) {
225			eventlog(eventlog_level_debug,__FUNCTION__,"user %s loggedin on d2cs",
226			account);
227			reply=BNETD_D2CS_ACCOUNTLOGINREPLY_SUCCEED;
228			} else {
229			eventlog(eventlog_level_error,__FUNCTION__,"user %s hash not match",
230			account);
231			reply=BNETD_D2CS_ACCOUNTLOGINREPLY_FAILED;
232			}
233			}
234			}
235			if ((rpacket=packet_create(packet_class_d2cs_bnetd))) {
236			packet_set_size(rpacket,sizeof(t_bnetd_d2cs_accountloginreply));
237			packet_set_type(rpacket,BNETD_D2CS_ACCOUNTLOGINREPLY);
238			bn_int_set(&rpacket->u.bnetd_d2cs_accountloginreply.h.seqno,
239			bn_int_get(packet->u.d2cs_bnetd_accountloginreq.h.seqno));
240			bn_int_set(&rpacket->u.bnetd_d2cs_accountloginreply.reply,reply);
241			conn_push_outqueue(c,rpacket);
242			packet_del_ref(rpacket);
243			}
244			return 0;
245			}
246
247			#define CHAR_PORTRAIT_LEN 0x30
248			static int on_d2cs_charloginreq(t_connection * c, t_packet const * packet)
249			{
250			t_connection * client;
251			char const * charname;
252			char const * portrait;
253			char const * clienttag;
254			char * temp;
255			unsigned int sessionnum;
256			t_realm * realm;
257			char const * realmname;
258			unsigned int pos, reply;
259			t_packet * rpacket;
260	sysadm	1.2	char const *checknum;
261	sysadm	1.1
262			if (packet_get_size(packet)<sizeof(t_d2cs_bnetd_charloginreq)) {
263			eventlog(eventlog_level_error,__FUNCTION__,"got bad packet size");
264			return -1;
265			}
266			sessionnum=bn_int_get(packet->u.d2cs_bnetd_charloginreq.sessionnum);
267			pos=sizeof(t_d2cs_bnetd_charloginreq);
268			if (!(charname=packet_get_str_const(packet,pos,CHAR_NAME_LEN))) {
269			eventlog(eventlog_level_error,__FUNCTION__,"got bad character name");
270			return -1;
271			}
272			pos+=strlen(charname)+1;
273			if (!(portrait=packet_get_str_const(packet,pos,CHAR_PORTRAIT_LEN))) {
274			eventlog(eventlog_level_error,__FUNCTION__,"got bad character portrait");
275			return -1;
276			}
277	sysadm	1.2
278			/* get checknum generated by d2cs from packet, by sowater,20050401 */
279			pos+=strlen(portrait)+1;
280			if(!(checknum=packet_get_data_const(packet,pos,sizeof(char)))) {
281			eventlog(eventlog_level_error,__FUNCTION__,"get bad checknum");
282			return -1;
283			}
284
285	sysadm	1.1	if (!(client=connlist_find_connection_by_sessionnum(sessionnum))) {
286			eventlog(eventlog_level_error,__FUNCTION__,"user %d not found",sessionnum);
287			reply = BNETD_D2CS_CHARLOGINREPLY_FAILED;
288			} else if (!(clienttag=clienttag_uint_to_str(conn_get_clienttag(client)))) {
289			eventlog(eventlog_level_error,__FUNCTION__,"got NULL clienttag");
290			reply = BNETD_D2CS_CHARLOGINREPLY_FAILED;
291			} else if (!(realm=conn_get_realm(client))) {
292			eventlog(eventlog_level_error,__FUNCTION__,"got NULL realm");
293			reply = BNETD_D2CS_CHARLOGINREPLY_FAILED;
294			} else {
295			char revtag[8];
296
297			realmname = realm_get_name(realm);
298			temp=xmalloc(strlen(clienttag)+strlen(realmname)+1+strlen(charname)+1+
299			strlen(portrait)+1);
300			reply = BNETD_D2CS_CHARLOGINREPLY_SUCCEED;
301			strcpy(revtag,clienttag);
302			strreverse(revtag);
303			sprintf(temp,"%4s%s,%s,%s",revtag,realmname,charname,portrait);
304			conn_set_charname(client,charname);
305			conn_set_realminfo(client,temp);
306			xfree(temp);
307			eventlog(eventlog_level_debug,__FUNCTION__,
308			"loaded portrait for character %s",charname);
309	sysadm	1.2	/* save checknum in t_connection, by sowater */
310			if(conn_set_checknum(client,*checknum)<0) {
311			eventlog(eventlog_level_error,__FUNCTION__,"set checknum to connection fail");
312			}
313
314
315	sysadm	1.1	}
316			if ((rpacket=packet_create(packet_class_d2cs_bnetd))) {
317			packet_set_size(rpacket,sizeof(t_bnetd_d2cs_charloginreply));
318			packet_set_type(rpacket,BNETD_D2CS_CHARLOGINREPLY);
319			bn_int_set(&rpacket->u.bnetd_d2cs_charloginreply.h.seqno,
320			bn_int_get(packet->u.d2cs_bnetd_charloginreq.h.seqno));
321			bn_int_set(&rpacket->u.bnetd_d2cs_charloginreply.reply,reply);
322			conn_push_outqueue(c,rpacket);
323			packet_del_ref(rpacket);
324			}
325			return 0;
326			}
327
328			extern int handle_d2cs_init(t_connection * c)
329			{
330			t_packet * packet;
331
332			if ((packet=packet_create(packet_class_d2cs_bnetd))) {
333			packet_set_size(packet,sizeof(t_bnetd_d2cs_authreq));
334			packet_set_type(packet,BNETD_D2CS_AUTHREQ);
335			bn_int_set(&packet->u.bnetd_d2cs_authreq.h.seqno,1);
336			bn_int_set(&packet->u.bnetd_d2cs_authreq.sessionnum,conn_get_sessionnum(c));
337			conn_push_outqueue(c,packet);
338			packet_del_ref(packet);
339			}
340			eventlog(eventlog_level_info,__FUNCTION__,"sent init packet to d2cs (sessionnum=%d)",
341			conn_get_sessionnum(c));
342			return 0;
343			}
344
345			extern int send_d2cs_gameinforeq(t_connection * c)
346			{
347			t_packet * packet;
348			t_game * game;
349			t_realm * realm;
350
351			if (!(c))
352			{
353			eventlog(eventlog_level_error,__FUNCTION__,"got NULL conn");
354			return -1;
355			}
356
357			if (!(game = conn_get_game(c)))
358			{
359			eventlog(eventlog_level_error,__FUNCTION__,"conn had NULL game");
360			return -1;
361			}
362
363			if (!(realm = conn_get_realm(c)))
364			{
365			eventlog(eventlog_level_error,__FUNCTION__,"conn had NULL realm");
366			return -1;
367			}
368
369
370			if ((packet=packet_create(packet_class_d2cs_bnetd))) {
371			packet_set_size(packet,sizeof(t_bnetd_d2cs_gameinforeq));
372			packet_set_type(packet,BNETD_D2CS_GAMEINFOREQ);
373			bn_int_set(&packet->u.bnetd_d2cs_gameinforeq.h.seqno,0);
374			packet_append_string(packet,game_get_name(game));
375			conn_push_outqueue(realm_get_conn(realm),packet);
376			packet_del_ref(packet);
377			}
378			return 0;
379			}
380
381			static int on_d2cs_gameinforeply(t_connection * c, t_packet const * packet)
382			{
383			t_game * game;
384			char const * gamename;
385			unsigned int difficulty;
386			t_game_difficulty diff;
387
388			if (!(c)) {
389			eventlog(eventlog_level_error,__FUNCTION__,"got NULL connection");
390			return -1;
391			}
392
393			if (!(gamename = packet_get_str_const(packet,sizeof(t_d2cs_bnetd_gameinforeply),GAME_NAME_LEN)))
394			{
395			eventlog(eventlog_level_error,__FUNCTION__,"missing or too long gamename");
396			return -1;
397			}
398
399			if (!(game = gamelist_find_game(gamename,game_type_diablo2closed)))
400			{
401			eventlog(eventlog_level_error,__FUNCTION__,"reply for unknown game \"%s\"",gamename);
402			return -1;
403			}
404
405			difficulty = bn_byte_get(packet->u.d2cs_bnetd_gameinforeply.difficulty);
406
407			switch (difficulty)
408			{
409			case 0:
410			diff = game_difficulty_normal;
411			break;
412			case 1:
413			diff = game_difficulty_nightmare;
414			break;
415			case 2:
416			diff = game_difficulty_hell;
417			break;
418			default:
419			diff = game_difficulty_none;
420			}
421
422			game_set_difficulty(game,diff);
423
424			return 0;
425			}
426
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