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/*
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* Copyright (C) 2000,2001 Onlyer (onlyer@263.net)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "common/setup_before.h"
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#include "setup.h"
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#ifdef HAVE_STDDEF_H
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# include <stddef.h>
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#else
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# ifndef NULL
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# define NULL ((void *)0)
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# endif
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#endif
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#ifdef STDC_HEADERS
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# include <stdlib.h>
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#else
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# ifdef HAVE_MALLOC_H
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# include <malloc.h>
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# endif
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#else
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# ifdef HAVE_STRINGS_H
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# include <strings.h>
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# endif
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#endif
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#include "compat/strsep.h"
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#include "compat/char_bit.h"
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h> /* needed to include netinet/in.h */
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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# include <sys/socket.h>
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#endif
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#include "compat/socket.h"
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#ifdef HAVE_SYS_PARAM_H
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# include <sys/param.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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# include <netinet/in.h>
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#endif
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#include "compat/netinet_in.h"
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#ifdef HAVE_ARPA_INET_H
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# include <arpa/inet.h> /* FIXME: probably not needed... do some systems put types in here or something? */
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#endif
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#ifdef TIME_WITH_SYS_TIME
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# include <sys/time.h>
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# include <time.h>
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#else
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# ifdef HAVE_SYS_TIME_H
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# include <sys/time.h>
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# else
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# include <time.h>
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# endif
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#endif
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#include "compat/psock.h"
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#include <regex.h>
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#include "d2gs.h"
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#include "game.h"
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#include "net.h"
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#include "bit.h"
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#include "prefs.h"
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#include "connection.h"
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#include "common/introtate.h"
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#include "common/addr.h"
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#include "common/list.h"
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#include "common/eventlog.h"
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#include "common/xalloc.h"
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#include "common/setup_after.h"
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static t_list * d2gslist_head=NULL;
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static unsigned int d2gs_id=0;
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static unsigned int total_d2gs=0;
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/* Added by Leaflet at 2006-06-05 Begin */
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// TODO: Rewriting these code is requied
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// All these configuration should be put into a seperate configuration file
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struct serve_scope_addr {
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regex_t *preg;
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unsigned short deny;
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struct serve_scope_addr *next;
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};
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struct serve_scope_addr_list {
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unsigned int ip;
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struct serve_scope_addr *head;
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struct serve_scope_addr_list *next;
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};
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static struct serve_scope_addr_list *serve_scope_list = NULL;
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extern int serve_scope_list_load(const char *filename)
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{
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FILE *fp;
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char temp[256], buffer[256];
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int section_begin = 0;
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struct serve_scope_addr_list *current_list, *new_list;
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struct serve_scope_addr *current_addr, *new_addr;
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unsigned int ip;
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if ((fp=fopen(filename, "r"))== NULL)
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{
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eventlog(eventlog_level_error, __FUNCTION__, "unable to read file %s", filename);
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return -1;
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}
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while(fgets(buffer, 255, fp))
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{
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switch(buffer[0])
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{
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case '!': // Begin of new server section
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new_list = (struct serve_scope_addr_list *)malloc(sizeof(struct serve_scope_addr_list));
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if (sscanf(buffer, "%*c %s", temp) == EOF)
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continue;
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if ((ip=net_inet_addr(temp))==~0U) {
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eventlog(eventlog_level_error,__FUNCTION__,"got bad ip address %s",temp);
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serve_scope_list_unload();
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return -2;
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}
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if (!serve_scope_list)
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serve_scope_list = new_list;
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else
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current_list->next = new_list;
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current_list = new_list;
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current_list->head = NULL;
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current_list->next = NULL;
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current_list->ip = ntohl(ip);
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break;
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case '@':
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case '~':
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new_addr = (struct serve_scope_addr *)malloc(sizeof(struct serve_scope_addr));
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if (sscanf(buffer, "%*c %s", temp) == EOF)
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continue;
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if (!current_list->head)
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current_list->head = new_addr;
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else
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current_addr->next = new_addr;
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current_addr = new_addr;
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current_addr->next = NULL;
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current_addr->preg = (regex_t *) malloc (sizeof (regex_t));
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if (regcomp (current_addr->preg, temp, REG_EXTENDED|REG_NOSUB) != 0)
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{
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eventlog(eventlog_level_error,__FUNCTION__,"Compile regular expression pattern failed %s",temp);
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free (current_addr->preg);
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serve_scope_list_unload();
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return -3;
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}
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current_addr->deny = (buffer[0]=='~');
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break;
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}
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}
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return 0;
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}
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extern void serve_scope_list_unload(void)
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{
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struct serve_scope_addr_list *current_list;
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struct serve_scope_addr *current_addr;
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while(serve_scope_list)
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{
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current_list = serve_scope_list;
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serve_scope_list = serve_scope_list->next;
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while(current_list->head)
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{
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current_addr = current_list->head;
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current_list->head = current_list->head->next;
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regfree(current_addr->preg);
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free(current_addr->preg);
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free(current_addr);
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}
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free(current_list);
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}
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}
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extern int serve_scope_list_validate(unsigned int ip, t_connection *c)
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{
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struct serve_scope_addr_list *current_list;
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struct serve_scope_addr *current_addr;
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regmatch_t pmatch[10];
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struct sockaddr_in tsa;
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memset(&tsa,0,sizeof(tsa));
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tsa.sin_family = PSOCK_AF_INET;
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tsa.sin_port = htons((unsigned short)0);
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tsa.sin_addr.s_addr = htonl(c->addr);
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current_list = serve_scope_list;
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while(current_list)
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{
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if (current_list->ip == ip)
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{
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current_addr = current_list->head;
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while(current_addr)
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{
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if (!regexec (current_addr->preg, inet_ntoa(tsa.sin_addr), 0, pmatch, 0))
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return current_addr->deny; // Match
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current_addr = current_addr->next;
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}
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return 1; // No match serve scope
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}
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current_list = current_list->next;
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}
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return 0; // No match game server
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}
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/* End */
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extern t_list * d2gslist(void)
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{
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return d2gslist_head;
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}
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extern int d2gslist_create(void)
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{
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d2gslist_head=list_create();
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return d2gslist_reload(prefs_get_d2gs_list());
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}
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extern int d2gslist_reload(char const * gslist)
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{
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t_addrlist * gsaddrs;
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t_d2gs * gs;
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if (!d2gslist_head) return -1;
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BEGIN_LIST_TRAVERSE_DATA(d2gslist_head,gs)
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{
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BIT_CLR_FLAG(gs->flag, D2GS_FLAG_VALID);
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}
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END_LIST_TRAVERSE_DATA()
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gsaddrs = addrlist_create(gslist, INADDR_ANY, 0);
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if (gsaddrs) {
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t_elem const *acurr;
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t_addr * curr_laddr;
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LIST_TRAVERSE_CONST(gsaddrs, acurr)
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{
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curr_laddr = (t_addr*)elem_get_data(acurr);
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if (!curr_laddr) {
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eventlog(eventlog_level_error, __FUNCTION__, "found NULL value in gslist");
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continue;
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}
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if (!(gs=d2gslist_find_gs_by_ip(addr_get_ip(curr_laddr))))
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gs = d2gs_create(addr_num_to_ip_str(addr_get_ip(curr_laddr)));
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if (gs) BIT_SET_FLAG(gs->flag, D2GS_FLAG_VALID);
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}
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addrlist_destroy(gsaddrs);
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}
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BEGIN_LIST_TRAVERSE_DATA(d2gslist_head,gs)
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{
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if (!BIT_TST_FLAG(gs->flag, D2GS_FLAG_VALID)) {
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d2gs_destroy(gs,&curr_elem_);
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}
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}
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END_LIST_TRAVERSE_DATA()
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return 0;
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}
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extern int d2gslist_destroy(void)
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{
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t_d2gs * gs;
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BEGIN_LIST_TRAVERSE_DATA_CONST(d2gslist_head,gs)
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{
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d2gs_destroy(gs,(t_elem **)&curr_elem_);
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}
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END_LIST_TRAVERSE_DATA_CONST()
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d2cs_connlist_reap();
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if (list_destroy(d2gslist_head)<0) {
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eventlog(eventlog_level_error,__FUNCTION__,"error destroy d2gs list");
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return -1;
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}
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d2gslist_head=NULL;
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return 0;
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}
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extern t_d2gs * d2gslist_find_gs_by_ip(unsigned int ip)
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{
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t_d2gs * gs;
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BEGIN_LIST_TRAVERSE_DATA_CONST(d2gslist_head,gs)
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{
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| 315 |
if (gs->ip==ip) return gs;
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}
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END_LIST_TRAVERSE_DATA_CONST()
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return NULL;
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}
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extern t_d2gs * d2gslist_find_gs(unsigned int id)
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{
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t_d2gs * gs;
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BEGIN_LIST_TRAVERSE_DATA_CONST(d2gslist_head,gs)
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{
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| 327 |
if (gs->id==id) return gs;
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}
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END_LIST_TRAVERSE_DATA_CONST()
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return NULL;
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}
|
| 332 |
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| 333 |
extern t_d2gs * d2gs_create(char const * ipaddr)
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| 334 |
{
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| 335 |
t_d2gs * gs;
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| 336 |
unsigned int ip;
|
| 337 |
|
| 338 |
ASSERT(ipaddr,NULL);
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| 339 |
if ((ip=net_inet_addr(ipaddr))==~0U) {
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| 340 |
eventlog(eventlog_level_error,__FUNCTION__,"got bad ip address %s",ipaddr);
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return NULL;
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| 342 |
}
|
| 343 |
if (d2gslist_find_gs_by_ip(ntohl(ip))) {
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| 344 |
eventlog(eventlog_level_error,__FUNCTION__,"game server %s already in list",ipaddr);
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return NULL;
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| 346 |
}
|
| 347 |
gs=xmalloc(sizeof(t_d2gs));
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| 348 |
gs->ip=ntohl(ip);
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| 349 |
gs->id=++d2gs_id;
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| 350 |
gs->active=0;
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| 351 |
gs->token=0;
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| 352 |
gs->state=d2gs_state_none;
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| 353 |
gs->gamenum=0;
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| 354 |
gs->maxgame=0;
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| 355 |
gs->connection=NULL;
|
| 356 |
|
| 357 |
if (list_append_data(d2gslist_head,gs)<0) {
|
| 358 |
eventlog(eventlog_level_error,__FUNCTION__,"error add gs to list");
|
| 359 |
xfree(gs);
|
| 360 |
return NULL;
|
| 361 |
}
|
| 362 |
eventlog(eventlog_level_info,__FUNCTION__,"added game server %s (id: %d) to list",ipaddr,gs->id);
|
| 363 |
return gs;
|
| 364 |
}
|
| 365 |
|
| 366 |
extern int d2gs_destroy(t_d2gs * gs, t_elem ** curr)
|
| 367 |
{
|
| 368 |
ASSERT(gs,-1);
|
| 369 |
if (list_remove_data(d2gslist_head,gs,curr)<0) {
|
| 370 |
eventlog(eventlog_level_error,__FUNCTION__,"error remove gs from list");
|
| 371 |
return -1;
|
| 372 |
}
|
| 373 |
if (gs->active && gs->connection) {
|
| 374 |
d2cs_conn_set_state(gs->connection, conn_state_destroy);
|
| 375 |
d2gs_deactive(gs, gs->connection);
|
| 376 |
}
|
| 377 |
eventlog(eventlog_level_info,__FUNCTION__,"removed game server %s (id: %d) from list",addr_num_to_ip_str(gs->ip),gs->id);
|
| 378 |
xfree(gs);
|
| 379 |
return 0;
|
| 380 |
}
|
| 381 |
|
| 382 |
extern t_d2gs * d2gslist_get_server_by_id(unsigned int id)
|
| 383 |
{
|
| 384 |
t_d2gs * gs;
|
| 385 |
|
| 386 |
BEGIN_LIST_TRAVERSE_DATA_CONST(d2gslist_head,gs)
|
| 387 |
{
|
| 388 |
if (gs->id==id) return gs;
|
| 389 |
}
|
| 390 |
END_LIST_TRAVERSE_DATA_CONST()
|
| 391 |
return NULL;
|
| 392 |
}
|
| 393 |
|
| 394 |
extern t_d2gs * d2gslist_choose_server(t_connection * c)
|
| 395 |
{
|
| 396 |
t_d2gs * gs;
|
| 397 |
t_d2gs * ogs;
|
| 398 |
unsigned int percent;
|
| 399 |
unsigned int min_percent=100;
|
| 400 |
|
| 401 |
ogs=NULL;
|
| 402 |
BEGIN_LIST_TRAVERSE_DATA_CONST(d2gslist_head,gs)
|
| 403 |
{
|
| 404 |
if (!gs->active) continue;
|
| 405 |
if (!gs->connection) continue;
|
| 406 |
if (gs->state!=d2gs_state_authed) continue;
|
| 407 |
if (!gs->maxgame) continue;
|
| 408 |
if (gs->gamenum>=gs->maxgame) continue;
|
| 409 |
|
| 410 |
/* Added by Leaflet at 2006-06-05 -- Begin */
|
| 411 |
if (serve_scope_list_validate (gs->ip, c)) continue;
|
| 412 |
/* End */
|
| 413 |
|
| 414 |
percent=100*gs->gamenum/gs->maxgame;
|
| 415 |
if (percent<min_percent) {
|
| 416 |
min_percent=percent;
|
| 417 |
ogs=gs;
|
| 418 |
}
|
| 419 |
}
|
| 420 |
END_LIST_TRAVERSE_DATA_CONST()
|
| 421 |
return ogs;
|
| 422 |
}
|
| 423 |
|
| 424 |
extern int d2gs_set_state(t_d2gs * gs, t_d2gs_state state)
|
| 425 |
{
|
| 426 |
ASSERT(gs,-1);
|
| 427 |
gs->state=state;
|
| 428 |
return 0;
|
| 429 |
}
|
| 430 |
|
| 431 |
extern t_d2gs_state d2gs_get_state(t_d2gs const * gs)
|
| 432 |
{
|
| 433 |
ASSERT(gs,d2gs_state_none);
|
| 434 |
return gs->state;
|
| 435 |
}
|
| 436 |
|
| 437 |
extern int d2gs_add_gamenum(t_d2gs * gs, int number)
|
| 438 |
{
|
| 439 |
ASSERT(gs,-1);
|
| 440 |
gs->gamenum += number;
|
| 441 |
return 0;
|
| 442 |
}
|
| 443 |
|
| 444 |
extern unsigned int d2gs_get_gamenum(t_d2gs const * gs)
|
| 445 |
{
|
| 446 |
ASSERT(gs,0);
|
| 447 |
return gs->gamenum;
|
| 448 |
}
|
| 449 |
|
| 450 |
|
| 451 |
extern int d2gs_set_maxgame(t_d2gs * gs,unsigned int maxgame)
|
| 452 |
{
|
| 453 |
ASSERT(gs,-1);
|
| 454 |
gs->maxgame=maxgame;
|
| 455 |
return 0;
|
| 456 |
}
|
| 457 |
|
| 458 |
extern unsigned int d2gs_get_maxgame(t_d2gs const * gs)
|
| 459 |
{
|
| 460 |
ASSERT(gs,0);
|
| 461 |
return gs->maxgame;
|
| 462 |
}
|
| 463 |
|
| 464 |
extern unsigned int d2gs_get_id(t_d2gs const * gs)
|
| 465 |
{
|
| 466 |
ASSERT(gs,0);
|
| 467 |
return gs->id;
|
| 468 |
}
|
| 469 |
|
| 470 |
extern unsigned int d2gs_get_ip(t_d2gs const * gs)
|
| 471 |
{
|
| 472 |
ASSERT(gs,0);
|
| 473 |
return gs->ip;
|
| 474 |
}
|
| 475 |
|
| 476 |
extern unsigned int d2gs_get_token(t_d2gs const * gs)
|
| 477 |
{
|
| 478 |
return gs->token;
|
| 479 |
}
|
| 480 |
|
| 481 |
extern unsigned int d2gs_make_token(t_d2gs * gs)
|
| 482 |
{
|
| 483 |
return ((unsigned int)rand())^((++(gs->token))+((unsigned int)time(NULL)));
|
| 484 |
}
|
| 485 |
|
| 486 |
extern t_connection * d2gs_get_connection(t_d2gs const * gs)
|
| 487 |
{
|
| 488 |
ASSERT(gs,NULL);
|
| 489 |
return gs->connection;
|
| 490 |
}
|
| 491 |
|
| 492 |
extern int d2gs_active(t_d2gs * gs, t_connection * c)
|
| 493 |
{
|
| 494 |
ASSERT(gs,-1);
|
| 495 |
ASSERT(c,-1);
|
| 496 |
|
| 497 |
if (gs->active && gs->connection) {
|
| 498 |
eventlog(eventlog_level_warn,__FUNCTION__,"game server %d is already actived, deactive previous connection first",gs->id);
|
| 499 |
d2gs_deactive(gs, gs->connection);
|
| 500 |
}
|
| 501 |
total_d2gs++;
|
| 502 |
eventlog(eventlog_level_info,__FUNCTION__,"game server %s (id: %d) actived (%d total)",addr_num_to_addr_str(d2cs_conn_get_addr(c),
|
| 503 |
d2cs_conn_get_port(c)),gs->id,total_d2gs);
|
| 504 |
gs->state=d2gs_state_authed;
|
| 505 |
gs->connection=c;
|
| 506 |
gs->active=1;
|
| 507 |
gs->gamenum=0;
|
| 508 |
gs->maxgame=0;
|
| 509 |
return 0;
|
| 510 |
}
|
| 511 |
|
| 512 |
extern int d2gs_deactive(t_d2gs * gs, t_connection * c)
|
| 513 |
{
|
| 514 |
t_game * game;
|
| 515 |
|
| 516 |
ASSERT(gs,-1);
|
| 517 |
if (!gs->active || !gs->connection) {
|
| 518 |
eventlog(eventlog_level_warn,__FUNCTION__,"game server %d is not actived yet", gs->id);
|
| 519 |
return -1;
|
| 520 |
}
|
| 521 |
if (gs->connection != c) {
|
| 522 |
eventlog(eventlog_level_debug,__FUNCTION__,"game server %d connection mismatch,ignore it", gs->id);
|
| 523 |
return 0;
|
| 524 |
}
|
| 525 |
total_d2gs--;
|
| 526 |
eventlog(eventlog_level_info,__FUNCTION__,"game server %s (id: %d) deactived (%d left)",addr_num_to_addr_str(d2cs_conn_get_addr(gs->connection),d2cs_conn_get_port(gs->connection)),gs->id,total_d2gs);
|
| 527 |
gs->state=d2gs_state_none;
|
| 528 |
gs->connection=NULL;
|
| 529 |
gs->active=0;
|
| 530 |
gs->maxgame=0;
|
| 531 |
eventlog(eventlog_level_info,__FUNCTION__,"destroying all games on game server %d",gs->id);
|
| 532 |
BEGIN_LIST_TRAVERSE_DATA(d2cs_gamelist(),game)
|
| 533 |
{
|
| 534 |
if (game_get_d2gs(game)==gs) game_destroy(game,&curr_elem_);
|
| 535 |
}
|
| 536 |
END_LIST_TRAVERSE_DATA()
|
| 537 |
if (gs->gamenum!=0) {
|
| 538 |
eventlog(eventlog_level_error,__FUNCTION__,"game server %d deactived but still with games left",gs->id);
|
| 539 |
}
|
| 540 |
gs->gamenum=0;
|
| 541 |
return 0;
|
| 542 |
}
|
| 543 |
|
| 544 |
extern unsigned int d2gs_calc_checksum(t_connection * c)
|
| 545 |
{
|
| 546 |
unsigned int sessionnum, checksum, port, addr;
|
| 547 |
unsigned int i, len, ch;
|
| 548 |
char const * realmname;
|
| 549 |
char const * password;
|
| 550 |
|
| 551 |
ASSERT(c,0);
|
| 552 |
sessionnum=d2cs_conn_get_sessionnum(c);
|
| 553 |
checksum=prefs_get_d2gs_checksum();
|
| 554 |
port=d2cs_conn_get_port(c);
|
| 555 |
addr=d2cs_conn_get_addr(c);
|
| 556 |
realmname=prefs_get_realmname();
|
| 557 |
password=prefs_get_d2gs_password();
|
| 558 |
|
| 559 |
len=strlen(realmname);
|
| 560 |
for (i=0; i<len ; i++) {
|
| 561 |
ch = (unsigned int)(unsigned char) realmname[i];
|
| 562 |
checksum ^= ROTL(sessionnum,i, sizeof(unsigned int) * CHAR_BIT);
|
| 563 |
checksum ^= ROTL(port , ch, sizeof(unsigned int) * CHAR_BIT);
|
| 564 |
}
|
| 565 |
len=strlen(password);
|
| 566 |
for (i=0; i<len ; i++) {
|
| 567 |
ch = (unsigned int)(unsigned char) password[i];
|
| 568 |
checksum ^= ROTL(sessionnum,i, sizeof(unsigned int) * CHAR_BIT);
|
| 569 |
checksum ^= ROTL(port , ch, sizeof(unsigned int) * CHAR_BIT);
|
| 570 |
}
|
| 571 |
checksum ^= addr;
|
| 572 |
return checksum;
|
| 573 |
}
|
| 574 |
|
| 575 |
extern int d2gs_keepalive(void)
|
| 576 |
{
|
| 577 |
t_packet * packet;
|
| 578 |
t_d2gs * gs;
|
| 579 |
|
| 580 |
if (!(packet=packet_create(packet_class_d2gs))) {
|
| 581 |
eventlog(eventlog_level_error,__FUNCTION__,"error creating packet");
|
| 582 |
return -1;
|
| 583 |
}
|
| 584 |
packet_set_size(packet,sizeof(t_d2cs_d2gs_echoreq));
|
| 585 |
packet_set_type(packet,D2CS_D2GS_ECHOREQ);
|
| 586 |
/* FIXME: sequence number not set */
|
| 587 |
bn_int_set(&packet->u.d2cs_d2gs.h.seqno,0);
|
| 588 |
BEGIN_LIST_TRAVERSE_DATA(d2gslist_head,gs)
|
| 589 |
{
|
| 590 |
if (gs->active && gs->connection) {
|
| 591 |
conn_push_outqueue(gs->connection,packet);
|
| 592 |
}
|
| 593 |
}
|
| 594 |
END_LIST_TRAVERSE_DATA()
|
| 595 |
packet_del_ref(packet);
|
| 596 |
return 0;
|
| 597 |
}
|
| 598 |
|
| 599 |
extern int d2gs_restart_all_gs(void)
|
| 600 |
{
|
| 601 |
t_packet * packet;
|
| 602 |
t_d2gs * gs;
|
| 603 |
|
| 604 |
if (!(packet=packet_create(packet_class_d2gs))) {
|
| 605 |
eventlog(eventlog_level_error, __FUNCTION__, "error creating packet");
|
| 606 |
return -1;
|
| 607 |
}
|
| 608 |
packet_set_size(packet,sizeof(t_d2cs_d2gs_control));
|
| 609 |
packet_set_type(packet,D2CS_D2GS_CONTROL);
|
| 610 |
/* FIXME: sequence number not set */
|
| 611 |
bn_int_set(&packet->u.d2cs_d2gs.h.seqno,0);
|
| 612 |
bn_int_set(&packet->u.d2cs_d2gs_control.cmd, D2CS_D2GS_CONTROL_CMD_RESTART);
|
| 613 |
bn_int_set(&packet->u.d2cs_d2gs_control.value, prefs_get_d2gs_restart_delay());
|
| 614 |
|
| 615 |
BEGIN_LIST_TRAVERSE_DATA(d2gslist_head,gs)
|
| 616 |
{
|
| 617 |
if (gs->connection) {
|
| 618 |
conn_push_outqueue(gs->connection,packet);
|
| 619 |
}
|
| 620 |
}
|
| 621 |
|
| 622 |
END_LIST_TRAVERSE_DATA()
|
| 623 |
packet_del_ref(packet);
|
| 624 |
return 0;
|
| 625 |
}
|
| 626 |
|
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