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| 1 | +/* ------------------------------------------------------------------------------- |
| 2 | +
|
| 3 | + Copyright (C) 1999-2007 id Software, Inc. and contributors. |
| 4 | + For a list of contributors, see the accompanying CONTRIBUTORS file. |
| 5 | +
|
| 6 | + This file is part of GtkRadiant. |
| 7 | +
|
| 8 | + GtkRadiant is free software; you can redistribute it and/or modify |
| 9 | + it under the terms of the GNU General Public License as published by |
| 10 | + the Free Software Foundation; either version 2 of the License, or |
| 11 | + (at your option) any later version. |
| 12 | +
|
| 13 | + GtkRadiant is distributed in the hope that it will be useful, |
| 14 | + but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | + GNU General Public License for more details. |
| 17 | +
|
| 18 | + You should have received a copy of the GNU General Public License |
| 19 | + along with GtkRadiant; if not, write to the Free Software |
| 20 | + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 21 | +
|
| 22 | + ------------------------------------------------------------------------------- |
| 23 | +
|
| 24 | + This code has been altered significantly from its original form, to support |
| 25 | + several games based on the Quake III Arena engine, in the form of "Q3Map2." |
| 26 | +
|
| 27 | + ------------------------------------------------------------------------------- */ |
| 28 | + |
| 29 | + |
| 30 | + |
| 31 | +/* dependencies */ |
| 32 | +#include "q3map2.h" |
| 33 | + |
| 34 | + |
| 35 | + |
| 36 | +/* |
| 37 | + MD4BlockChecksum() |
| 38 | + calculates an md4 checksum for a block of data |
| 39 | + */ |
| 40 | + |
| 41 | +static int MD4BlockChecksum( void * buffer, int length ) { |
| 42 | + unsigned char digest[16]; |
| 43 | + int checksum; |
| 44 | + |
| 45 | + md4_get_digest( buffer, length, digest ); |
| 46 | + /* I suppose it has to be done that way for legacy reasons? */ |
| 47 | + checksum = digest[0] & ( digest[1] << 8 ) & ( digest[2] << 16 ) & ( digest[3] << 24 ); |
| 48 | + checksum ^= digest[4] & ( digest[5] << 8 ) & ( digest[6] << 16 ) & ( digest[7] << 24 ); |
| 49 | + checksum ^= digest[8] & ( digest[9] << 8 ) & ( digest[10] << 16 ) & ( digest[11] << 24 ); |
| 50 | + checksum ^= digest[12] & ( digest[13] << 8 ) & ( digest[14] << 16 ) & ( digest[15] << 24 ); |
| 51 | + return checksum; |
| 52 | +} |
| 53 | + |
| 54 | +/* |
| 55 | + FixAASMain() |
| 56 | + resets an aas checksum to match the given BSP |
| 57 | + */ |
| 58 | + |
| 59 | +int FixAASMain( int argc, char **argv ){ |
| 60 | + int length, checksum; |
| 61 | + void *buffer; |
| 62 | + FILE *file; |
| 63 | + char aas[ 1024 ], **ext; |
| 64 | + char *exts[] = |
| 65 | + { |
| 66 | + ".aas", |
| 67 | + "_b0.aas", |
| 68 | + "_b1.aas", |
| 69 | + NULL |
| 70 | + }; |
| 71 | + |
| 72 | + |
| 73 | + /* arg checking */ |
| 74 | + if ( argc < 2 ) { |
| 75 | + Sys_Printf( "Usage: q3map -fixaas [-v] <mapname>\n" ); |
| 76 | + return 0; |
| 77 | + } |
| 78 | + |
| 79 | + /* do some path mangling */ |
| 80 | + strcpy( source, ExpandArg( argv[ argc - 1 ] ) ); |
| 81 | + StripExtension( source ); |
| 82 | + DefaultExtension( source, ".bsp" ); |
| 83 | + |
| 84 | + /* note it */ |
| 85 | + Sys_Printf( "--- FixAAS ---\n" ); |
| 86 | + |
| 87 | + /* load the bsp */ |
| 88 | + Sys_Printf( "Loading %s\n", source ); |
| 89 | + length = LoadFile( source, &buffer ); |
| 90 | + |
| 91 | + /* create bsp checksum */ |
| 92 | + Sys_Printf( "Creating checksum...\n" ); |
| 93 | + checksum = LittleLong( MD4BlockChecksum( buffer, length ) ); |
| 94 | + |
| 95 | + /* write checksum to aas */ |
| 96 | + ext = exts; |
| 97 | + while ( *ext ) |
| 98 | + { |
| 99 | + /* mangle name */ |
| 100 | + strcpy( aas, source ); |
| 101 | + StripExtension( aas ); |
| 102 | + strcat( aas, *ext ); |
| 103 | + Sys_Printf( "Trying %s\n", aas ); |
| 104 | + ext++; |
| 105 | + |
| 106 | + /* fix it */ |
| 107 | + file = fopen( aas, "r+b" ); |
| 108 | + if ( !file ) { |
| 109 | + continue; |
| 110 | + } |
| 111 | + if ( fwrite( &checksum, 4, 1, file ) != 1 ) { |
| 112 | + Error( "Error writing checksum to %s", aas ); |
| 113 | + } |
| 114 | + fclose( file ); |
| 115 | + } |
| 116 | + |
| 117 | + /* return to sender */ |
| 118 | + return 0; |
| 119 | +} |
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