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sysadm |
1.1 |
/*
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* Copyright (C) 2001 faster (lqx@cic.tsinghua.edu.cn)
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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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#include <stdio.h>
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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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# ifdef HAVE_MEMORY_H
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# include <memory.h>
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# endif
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#endif
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#include "compat/strcasecmp.h"
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#include <ctype.h>
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#ifdef HAVE_LIMITS_H
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# include <limits.h>
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#endif
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#include "dbsdupecheck.h"
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#include "common/setup_after.h"
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#include "common/bn_type.h"
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#include "common/eventlog.h"
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const char * delimiter = "JM";
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int is_delimit(char * data)
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{
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if ((data[0]==delimiter[0]) && (data[1]==delimiter[1])) return 1;
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else return 0;
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}
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void * find_delimiter(char * data, unsigned int datalen)
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{
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char * datap = data;
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unsigned int count;
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for (count=1; count<datalen;count++)
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{
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if (is_delimit(datap)) return datap;
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}
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return NULL;
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}
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#define SKIPLEN 750
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extern int dbsdupecheck(char * data, unsigned int datalen)
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{
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char * pointer, * datap;
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unsigned int restlen;
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unsigned short itemcount, counter;
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unsigned long uid;
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// skip characters that have never played yet
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if (datalen< SKIPLEN) return DBSDUPECHECK_CONTAINS_NO_DUPE;
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// we skip the first SKIPLEN bytes containing various char infos wo don't care about
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// this a) speeds things up
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// and b) prevents us from detecting our magic index in a bad charname ;-)
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datap = data+SKIPLEN;
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restlen = datalen-SKIPLEN;
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do
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{
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pointer = find_delimiter(datap,restlen);
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restlen -= (pointer-datap);
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datap = pointer;
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}
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while ((is_delimit(datap)!=1) || (is_delimit(datap+4)!=1)); // now we should have found "JMxxJM"
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itemcount = bn_short_get(&datap[2]);
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datap+=4;
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restlen-=4;
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for (counter=0; counter<itemcount; counter++)
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{
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if ((datap[4]&0x20)==0x20)
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{
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eventlog(eventlog_level_info,__FUNCTION__,"simple item");
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datap+=14;
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restlen-=14;
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}
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else
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{
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eventlog(eventlog_level_info,__FUNCTION__,"extended item");
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uid = bn_int_get(&datap[14]);
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eventlog(eventlog_level_info,__FUNCTION__,"unique ID: %lu",uid);
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pointer = find_delimiter(datap,restlen);
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restlen-= (pointer-datap);
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datap = pointer;
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}
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}
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return DBSDUPECHECK_CONTAINS_NO_DUPE;
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}
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