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/*
Copyright (C) 2006 r1ch.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.

*/

//
// r1ch.net anticheat support
//

#include "win_local.h"

typedef PVOID (*FNINIT)( VOID );

PRIVATE PVOID anticheatApi;
PRIVATE FNINIT anticheatInit;
PRIVATE HMODULE anticheatHandle;

qboolean Sys_GetAntiCheatAPI( void ) {
    qboolean updated = qfalse;

    //already loaded, just reinit
    if( anticheatInit ) {
        anticheatApi = anticheatInit();
        if( !anticheatApi ) {
            Com_Printf( S_COLOR_RED "Anticheat failed to reinitialize!\n" );
            FreeLibrary( anticheatHandle );
            anticheatHandle = NULL;
            anticheatInit = NULL;
            return qfalse;
        }
        return qtrue;
    }

    //windows version check
    if( !iswinnt ) {
        Com_Printf( S_COLOR_YELLOW
            "Anticheat requires Windows 2000/XP/2003.\n" );
        return qfalse;
    }

reInit:
    anticheatHandle = LoadLibrary( "anticheat" );
    if( !anticheatHandle ) {
        Com_Printf( S_COLOR_RED "Anticheat failed to load.\n" );
        return qfalse;
    }

    //this should never fail unless the anticheat.dll is bad
    anticheatInit = ( FNINIT )GetProcAddress(
        anticheatHandle, "Initialize" );
    if( !anticheatInit ) {
        Com_Printf( S_COLOR_RED "Couldn't get API of anticheat.dll!\n"
                    "Please check you are using a valid "
                    "anticheat.dll from http://antiche.at/" );
        FreeLibrary( anticheatHandle );
        anticheatHandle = NULL;
        return qfalse;
    }

    anticheatApi = anticheatInit();
    if( anticheatApi ) {
        return qtrue; // succeeded
    }

    FreeLibrary( anticheatHandle );
    anticheatHandle = NULL;
    anticheatInit = NULL;
    if( !updated ) {
        updated = qtrue;
        goto reInit;
    }

    Com_Printf( S_COLOR_RED "Anticheat failed to initialize.\n" );

    return qfalse;
}