mirror of https://github.com/TTimo/GtkRadiant.git
120 lines
3.2 KiB
C
120 lines
3.2 KiB
C
/* -------------------------------------------------------------------------------
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Copyright (C) 1999-2007 id Software, Inc. and contributors.
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For a list of contributors, see the accompanying CONTRIBUTORS file.
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This file is part of GtkRadiant.
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GtkRadiant is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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GtkRadiant 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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You should have received a copy of the GNU General Public License
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along with GtkRadiant; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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-------------------------------------------------------------------------------
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This code has been altered significantly from its original form, to support
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several games based on the Quake III Arena engine, in the form of "Q3Map2."
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------------------------------------------------------------------------------- */
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/* dependencies */
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#include "q3map2.h"
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/*
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MD4BlockChecksum()
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calculates an md4 checksum for a block of data
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*/
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static int MD4BlockChecksum( void * buffer, int length ) {
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unsigned char digest[16];
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int checksum;
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md4_get_digest( buffer, length, digest );
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/* I suppose it has to be done that way for legacy reasons? */
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checksum = digest[0] & ( digest[1] << 8 ) & ( digest[2] << 16 ) & ( digest[3] << 24 );
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checksum ^= digest[4] & ( digest[5] << 8 ) & ( digest[6] << 16 ) & ( digest[7] << 24 );
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checksum ^= digest[8] & ( digest[9] << 8 ) & ( digest[10] << 16 ) & ( digest[11] << 24 );
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checksum ^= digest[12] & ( digest[13] << 8 ) & ( digest[14] << 16 ) & ( digest[15] << 24 );
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return checksum;
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}
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/*
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FixAASMain()
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resets an aas checksum to match the given BSP
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*/
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int FixAASMain( int argc, char **argv ){
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int length, checksum;
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void *buffer;
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FILE *file;
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char aas[ 1024 ], **ext;
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char *exts[] =
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{
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".aas",
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"_b0.aas",
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"_b1.aas",
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NULL
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};
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/* arg checking */
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if ( argc < 2 ) {
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Sys_Printf( "Usage: q3map -fixaas [-v] <mapname>\n" );
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return 0;
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}
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/* do some path mangling */
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strcpy( source, ExpandArg( argv[ argc - 1 ] ) );
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StripExtension( source );
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DefaultExtension( source, ".bsp" );
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/* note it */
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Sys_Printf( "--- FixAAS ---\n" );
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/* load the bsp */
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Sys_Printf( "Loading %s\n", source );
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length = LoadFile( source, &buffer );
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/* create bsp checksum */
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Sys_Printf( "Creating checksum...\n" );
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checksum = LittleLong( MD4BlockChecksum( buffer, length ) );
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/* write checksum to aas */
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ext = exts;
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while ( *ext )
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{
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/* mangle name */
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strcpy( aas, source );
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StripExtension( aas );
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strcat( aas, *ext );
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Sys_Printf( "Trying %s\n", aas );
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ext++;
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/* fix it */
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file = fopen( aas, "r+b" );
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if ( !file ) {
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continue;
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}
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if ( fwrite( &checksum, 4, 1, file ) != 1 ) {
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Error( "Error writing checksum to %s", aas );
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}
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fclose( file );
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}
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/* return to sender */
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return 0;
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}
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