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	/*
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	char const *checknum;
261
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
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	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	/* 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	}
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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