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)
{
        t_account *             user_account;
        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 if (!is_verified(account)) {
                eventlog(eventlog_level_debug, __FUNCTION__, "[%d] account has not been verified (failed)", conn_get_socket(c));
                reply=BNETD_D2CS_ACCOUNTLOGINREPLY_FAILED;
        } else {
            /* By Leaflet, 2006-06-21 */
                if (!(user_account = accountlist_find_account(account))) {
                    eventlog(eventlog_level_info, __FUNCTION__, "[%d] login for \"%s\" refused (no such account)", conn_get_socket(c), account);
                } else {
                        if (reset_user_email(user_account) == 0)
                                eventlog(eventlog_level_info, __FUNCTION__, "[%d] reset account \"%s\" email", conn_get_socket(c), account);
                }

                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	sysadm	1.3	t_account * user_account;
169	sysadm	1.1	unsigned int sessionkey;
170			unsigned int sessionnum;
171			unsigned int salt;
172			char const * account;
173			char const * tname;
174			t_connection * client;
175			int reply;
176			t_packet * rpacket;
177			struct
178			{
179			bn_int salt;
180			bn_int sessionkey;
181			bn_int sessionnum;
182			bn_int secret;
183			bn_int passhash[5];
184			} temp;
185			t_hash secret_hash;
186			char const * pass_str;
187			t_hash passhash;
188			t_hash try_hash;
189
190			if (packet_get_size(packet)<sizeof(t_d2cs_bnetd_accountloginreq)) {
191			eventlog(eventlog_level_error,__FUNCTION__,"got bad packet size");
192			return -1;
193			}
194			if (!(account=packet_get_str_const(packet,sizeof(t_d2cs_bnetd_accountloginreq),USER_NAME_MAX))) {
195			eventlog(eventlog_level_error,__FUNCTION__,"missing or too long account name");
196			return -1;
197			}
198	sysadm	1.3
199	sysadm	1.1	sessionkey=bn_int_get(packet->u.d2cs_bnetd_accountloginreq.sessionkey);
200			sessionnum=bn_int_get(packet->u.d2cs_bnetd_accountloginreq.sessionnum);
201			salt=bn_int_get(packet->u.d2cs_bnetd_accountloginreq.seqno);
202			if (!(client=connlist_find_connection_by_sessionnum(sessionnum))) {
203			eventlog(eventlog_level_error,__FUNCTION__,"sessionnum %d not found",sessionnum);
204			reply=BNETD_D2CS_ACCOUNTLOGINREPLY_FAILED;
205			} else if (sessionkey!=conn_get_sessionkey(client)) {
206			eventlog(eventlog_level_error,__FUNCTION__,"sessionkey %d not match",sessionkey);
207			reply=BNETD_D2CS_ACCOUNTLOGINREPLY_FAILED;
208			} else if (!(tname=conn_get_username(client))) {
209			eventlog(eventlog_level_error,__FUNCTION__,"got NULL username");
210			reply=BNETD_D2CS_ACCOUNTLOGINREPLY_FAILED;
211			} else if (strcasecmp(account,tname)) {
212			eventlog(eventlog_level_error,__FUNCTION__,"username %s not match",account);
213			reply=BNETD_D2CS_ACCOUNTLOGINREPLY_FAILED;
214	sysadm	1.3	} else if (!is_verified(account)) {
215	sysadm	1.4	eventlog(eventlog_level_debug, __FUNCTION__, "[%d] account has not been verified (failed)", conn_get_socket(c));
216			reply=BNETD_D2CS_ACCOUNTLOGINREPLY_FAILED;
217			} else {
218	sysadm	1.3	/* By Leaflet, 2006-06-21 */
219			if (!(user_account = accountlist_find_account(account))) {
220			eventlog(eventlog_level_info, __FUNCTION__, "[%d] login for \"%s\" refused (no such account)", conn_get_socket(c), account);
221			} else {
222			if (reset_user_email(user_account) == 0)
223			eventlog(eventlog_level_info, __FUNCTION__, "[%d] reset account \"%s\" email", conn_get_socket(c), account);
224			}
225
226	sysadm	1.1	bn_int_set(&temp.salt,salt);
227			bn_int_set(&temp.sessionkey,sessionkey);
228			bn_int_set(&temp.sessionnum,sessionnum);
229			bn_int_set(&temp.secret,conn_get_secret(client));
230			pass_str=account_get_pass(conn_get_account(client));
231			if (hash_set_str(&passhash,pass_str)<0) {
232			reply=BNETD_D2CS_ACCOUNTLOGINREPLY_FAILED;
233			} else {
234			hash_to_bnhash((t_hash const *)&passhash,temp.passhash);
235			bnet_hash(&secret_hash,sizeof(temp),&temp);
236			bnhash_to_hash(packet->u.d2cs_bnetd_accountloginreq.secret_hash,&try_hash);
237			if (hash_eq(try_hash,secret_hash)==1) {
238			eventlog(eventlog_level_debug,__FUNCTION__,"user %s loggedin on d2cs",
239			account);
240			reply=BNETD_D2CS_ACCOUNTLOGINREPLY_SUCCEED;
241			} else {
242			eventlog(eventlog_level_error,__FUNCTION__,"user %s hash not match",
243			account);
244			reply=BNETD_D2CS_ACCOUNTLOGINREPLY_FAILED;
245			}
246			}
247			}
248			if ((rpacket=packet_create(packet_class_d2cs_bnetd))) {
249			packet_set_size(rpacket,sizeof(t_bnetd_d2cs_accountloginreply));
250			packet_set_type(rpacket,BNETD_D2CS_ACCOUNTLOGINREPLY);
251			bn_int_set(&rpacket->u.bnetd_d2cs_accountloginreply.h.seqno,
252			bn_int_get(packet->u.d2cs_bnetd_accountloginreq.h.seqno));
253			bn_int_set(&rpacket->u.bnetd_d2cs_accountloginreply.reply,reply);
254			conn_push_outqueue(c,rpacket);
255			packet_del_ref(rpacket);
256			}
257			return 0;
258			}
259
260			#define CHAR_PORTRAIT_LEN 0x30
261			static int on_d2cs_charloginreq(t_connection * c, t_packet const * packet)
262			{
263			t_connection * client;
264			char const * charname;
265			char const * portrait;
266			char const * clienttag;
267			char * temp;
268			unsigned int sessionnum;
269			t_realm * realm;
270			char const * realmname;
271			unsigned int pos, reply;
272			t_packet * rpacket;
273	sysadm	1.2	char const *checknum;
274	sysadm	1.1
275			if (packet_get_size(packet)<sizeof(t_d2cs_bnetd_charloginreq)) {
276			eventlog(eventlog_level_error,__FUNCTION__,"got bad packet size");
277			return -1;
278			}
279			sessionnum=bn_int_get(packet->u.d2cs_bnetd_charloginreq.sessionnum);
280			pos=sizeof(t_d2cs_bnetd_charloginreq);
281			if (!(charname=packet_get_str_const(packet,pos,CHAR_NAME_LEN))) {
282			eventlog(eventlog_level_error,__FUNCTION__,"got bad character name");
283			return -1;
284			}
285			pos+=strlen(charname)+1;
286			if (!(portrait=packet_get_str_const(packet,pos,CHAR_PORTRAIT_LEN))) {
287			eventlog(eventlog_level_error,__FUNCTION__,"got bad character portrait");
288			return -1;
289			}
290	sysadm	1.2
291			/* get checknum generated by d2cs from packet, by sowater,20050401 */
292			pos+=strlen(portrait)+1;
293			if(!(checknum=packet_get_data_const(packet,pos,sizeof(char)))) {
294			eventlog(eventlog_level_error,__FUNCTION__,"get bad checknum");
295			return -1;
296			}
297
298	sysadm	1.1	if (!(client=connlist_find_connection_by_sessionnum(sessionnum))) {
299			eventlog(eventlog_level_error,__FUNCTION__,"user %d not found",sessionnum);
300			reply = BNETD_D2CS_CHARLOGINREPLY_FAILED;
301			} else if (!(clienttag=clienttag_uint_to_str(conn_get_clienttag(client)))) {
302			eventlog(eventlog_level_error,__FUNCTION__,"got NULL clienttag");
303			reply = BNETD_D2CS_CHARLOGINREPLY_FAILED;
304			} else if (!(realm=conn_get_realm(client))) {
305			eventlog(eventlog_level_error,__FUNCTION__,"got NULL realm");
306			reply = BNETD_D2CS_CHARLOGINREPLY_FAILED;
307			} else {
308			char revtag[8];
309
310			realmname = realm_get_name(realm);
311			temp=xmalloc(strlen(clienttag)+strlen(realmname)+1+strlen(charname)+1+
312			strlen(portrait)+1);
313			reply = BNETD_D2CS_CHARLOGINREPLY_SUCCEED;
314			strcpy(revtag,clienttag);
315			strreverse(revtag);
316			sprintf(temp,"%4s%s,%s,%s",revtag,realmname,charname,portrait);
317			conn_set_charname(client,charname);
318			conn_set_realminfo(client,temp);
319			xfree(temp);
320			eventlog(eventlog_level_debug,__FUNCTION__,
321			"loaded portrait for character %s",charname);
322	sysadm	1.2	/* save checknum in t_connection, by sowater */
323			if(conn_set_checknum(client,*checknum)<0) {
324			eventlog(eventlog_level_error,__FUNCTION__,"set checknum to connection fail");
325			}
326
327
328	sysadm	1.1	}
329			if ((rpacket=packet_create(packet_class_d2cs_bnetd))) {
330			packet_set_size(rpacket,sizeof(t_bnetd_d2cs_charloginreply));
331			packet_set_type(rpacket,BNETD_D2CS_CHARLOGINREPLY);
332			bn_int_set(&rpacket->u.bnetd_d2cs_charloginreply.h.seqno,
333			bn_int_get(packet->u.d2cs_bnetd_charloginreq.h.seqno));
334			bn_int_set(&rpacket->u.bnetd_d2cs_charloginreply.reply,reply);
335			conn_push_outqueue(c,rpacket);
336			packet_del_ref(rpacket);
337			}
338			return 0;
339			}
340
341			extern int handle_d2cs_init(t_connection * c)
342			{
343			t_packet * packet;
344
345			if ((packet=packet_create(packet_class_d2cs_bnetd))) {
346			packet_set_size(packet,sizeof(t_bnetd_d2cs_authreq));
347			packet_set_type(packet,BNETD_D2CS_AUTHREQ);
348			bn_int_set(&packet->u.bnetd_d2cs_authreq.h.seqno,1);
349			bn_int_set(&packet->u.bnetd_d2cs_authreq.sessionnum,conn_get_sessionnum(c));
350			conn_push_outqueue(c,packet);
351			packet_del_ref(packet);
352			}
353			eventlog(eventlog_level_info,__FUNCTION__,"sent init packet to d2cs (sessionnum=%d)",
354			conn_get_sessionnum(c));
355			return 0;
356			}
357
358			extern int send_d2cs_gameinforeq(t_connection * c)
359			{
360			t_packet * packet;
361			t_game * game;
362			t_realm * realm;
363
364			if (!(c))
365			{
366			eventlog(eventlog_level_error,__FUNCTION__,"got NULL conn");
367			return -1;
368			}
369
370			if (!(game = conn_get_game(c)))
371			{
372			eventlog(eventlog_level_error,__FUNCTION__,"conn had NULL game");
373			return -1;
374			}
375
376			if (!(realm = conn_get_realm(c)))
377			{
378			eventlog(eventlog_level_error,__FUNCTION__,"conn had NULL realm");
379			return -1;
380			}
381
382
383			if ((packet=packet_create(packet_class_d2cs_bnetd))) {
384			packet_set_size(packet,sizeof(t_bnetd_d2cs_gameinforeq));
385			packet_set_type(packet,BNETD_D2CS_GAMEINFOREQ);
386			bn_int_set(&packet->u.bnetd_d2cs_gameinforeq.h.seqno,0);
387			packet_append_string(packet,game_get_name(game));
388			conn_push_outqueue(realm_get_conn(realm),packet);
389			packet_del_ref(packet);
390			}
391			return 0;
392			}
393
394			static int on_d2cs_gameinforeply(t_connection * c, t_packet const * packet)
395			{
396			t_game * game;
397			char const * gamename;
398			unsigned int difficulty;
399			t_game_difficulty diff;
400
401			if (!(c)) {
402			eventlog(eventlog_level_error,__FUNCTION__,"got NULL connection");
403			return -1;
404			}
405
406			if (!(gamename = packet_get_str_const(packet,sizeof(t_d2cs_bnetd_gameinforeply),GAME_NAME_LEN)))
407			{
408			eventlog(eventlog_level_error,__FUNCTION__,"missing or too long gamename");
409			return -1;
410			}
411
412			if (!(game = gamelist_find_game(gamename,game_type_diablo2closed)))
413			{
414			eventlog(eventlog_level_error,__FUNCTION__,"reply for unknown game \"%s\"",gamename);
415			return -1;
416			}
417
418			difficulty = bn_byte_get(packet->u.d2cs_bnetd_gameinforeply.difficulty);
419
420			switch (difficulty)
421			{
422			case 0:
423			diff = game_difficulty_normal;
424			break;
425			case 1:
426			diff = game_difficulty_nightmare;
427			break;
428			case 2:
429			diff = game_difficulty_hell;
430			break;
431			default:
432			diff = game_difficulty_none;
433			}
434
435			game_set_difficulty(game,diff);
436
437			return 0;
438			}
439
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