/* * Copyright (C) 2003	Aaron * * 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. */#define BINARY_LADDER_INTERNAL_ACCESS#include "common/setup_before.h"#ifdef HAVE_STDDEF_H# include <stddef.h>#else# ifndef NULL#  define NULL ((void *)0)# endif#endif#ifdef STDC_HEADERS# include <stdlib.h>#else# ifdef HAVE_MALLOC_H#  include <malloc.h># endif#endif#ifdef HAVE_STRING_H# include <string.h>#else# ifdef HAVE_STRINGS_H#  include <strings.h># endif#endif#include "errno.h"#include "compat/strerror.h"#include "account.h"#include "common/eventlog.h"#include "common/xalloc.h"#include "ladder_binary.h"#include "ladder.h"#include "prefs.h"#include "common/setup_after.h"static void dispose_filename(const char * filename){    if (filename) xfree((void*)filename);}static const char * binary_ladder_type_to_filename(t_binary_ladder_types type){  switch (type) {    case WAR3_SOLO: return "WAR3_SOLO";    case WAR3_TEAM: return "WAR3_TEAM";    case WAR3_FFA : return "WAR3_FFA";    case WAR3_AT  : return "WAR3_AT";    case W3XP_SOLO: return "W3XP_SOLO";    case W3XP_TEAM: return "W3XP_TEAM";    case W3XP_FFA : return "W3XP_FFA";    case W3XP_AT  : return "W3XP_AT";    case STAR_AR  : return "STAR_AR";    case STAR_AW  : return "STAR_AW";    case STAR_AG  : return "STAR_AG";    case STAR_CR  : return "STAR_CR";    case STAR_CW  : return "STAR_CW";    case STAR_CG  : return "STAR_CG";    case SEXP_AR  : return "SEXP_AR";    case SEXP_AW  : return "SEXP_AW";    case SEXP_AG  : return "SEXP_AG";    case SEXP_CR  : return "SEXP_CR";    case SEXP_CW  : return "SEXP_CW";    case SEXP_CG  : return "SEXP_CG";    case W2BN_AR  : return "W2BN_AR";    case W2BN_AW  : return "W2BN_AW";    case W2BN_AG  : return "W2BN_AG";    case W2BN_CR  : return "W2BN_CR";    case W2BN_CW  : return "W2BN_CW";    case W2BN_CG  : return "W2BN_CG";    case W2BN_ARI : return "W2BN_ARI";    case W2BN_AWI : return "W2BN_AWI";    case W2BN_AGI : return "W2BN_AGI";    case W2BN_CRI : return "W2BN_CRI";    case W2BN_CWI : return "W2BN_CWI";    case W2BN_CGI : return "W2BN_CGI";    default:      eventlog(eventlog_level_error,__FUNCTION__,"got invalid binary ladder type");      return NULL;  }}extern int binary_ladder_save(t_binary_ladder_types type, unsigned int paracount, t_cb_get_from_ladder _cb_get_from_ladder){ int results[10];  int rank = 1;  const char * ladder_name;  const char * filename;  int checksum, count;  FILE * fp;  if ((!(ladder_name = binary_ladder_type_to_filename(type))) ||       (!(filename = create_filename(prefs_get_ladderdir(),ladder_name,"_LADDER"))))  {    eventlog(eventlog_level_error,__FUNCTION__,"NULL filename -  aborting");    return -1;    }  if (!(fp = fopen(filename,"wb")))  {    eventlog(eventlog_level_error,__FUNCTION__,"could not open file \"%s\" for writing (fopen: %s)",filename,pstrerror(errno));    dispose_filename(filename);    return -1;  }  results[0] = magick;  fwrite(results,sizeof(int),1,fp); //write the magick int as header  checksum = 0;  while ((*_cb_get_from_ladder)(type,rank,results)!=-1)  {    fwrite(results,sizeof(int),paracount,fp);    for (count=0;count<paracount;count++) checksum+=results[count];    rank++;  }  //calculate a checksum over saved data  results[0] = checksum;  fwrite(results,sizeof(int),1,fp); // add checksum at the end  fclose(fp);  dispose_filename(filename);  return 0;}extern t_binary_ladder_load_result binary_ladder_load(t_binary_ladder_types type, unsigned int paracount, t_cb_add_to_ladder _cb_add_to_ladder){ int values[10];  const char * ladder_name;  const char * filename;  int checksum, count;  FILE * fp;  //TODO: load from file and if this fails return binary_ladder_load_failed  //      then make sure ladder gets loaded somehow else (form accounts)  //      compare checksum - and if it differs return load_invalid   //      then make sure ladder gets flushed and then loaded from accounts  //      on success don't load from accounts  if ((!(ladder_name = binary_ladder_type_to_filename(type))) ||       (!(filename = create_filename(prefs_get_ladderdir(),ladder_name,"_LADDER"))))  {    eventlog(eventlog_level_error,__FUNCTION__,"NULL filename -  aborting");    return load_failed;    }  if (!(fp = fopen(filename,"rb")))  {    eventlog(eventlog_level_info,__FUNCTION__,"could not open ladder file \"%s\" - maybe ladder still empty",filename,pstrerror(errno));    dispose_filename(filename);    return load_failed;  }  if ((fread(values,sizeof(int),1,fp)!=1) ||  (values[0]!=magick))  {    eventlog(eventlog_level_error,__FUNCTION__,"ladder file not starting with the magick int");    dispose_filename(filename);    fclose(fp);    return load_failed;  }  checksum = 0;  while (fread(values,sizeof(int),paracount,fp)==paracount)  {    (*_cb_add_to_ladder)(type,values);    for (count=0;count<paracount;count++) checksum+=values[count];  }  fread(values,sizeof(int),1,fp);   if (feof(fp)==0)  {    eventlog(eventlog_level_error,__FUNCTION__,"got data past end.. fall back to old loading mode");    return illegal_checksum;  }  if (values[0]!=checksum)  {    eventlog(eventlog_level_error,__FUNCTION__,"ladder file has invalid checksum... fall back to old loading mode");    return illegal_checksum;  }  fclose(fp);  eventlog(eventlog_level_info,__FUNCTION__,"successfully loaded %s",filename);  dispose_filename(filename);  return load_success;}