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file_rff.cpp
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file_rff.cpp
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/*
** file_rff.cpp
**
**---------------------------------------------------------------------------
** Copyright 1998-2009 Randy Heit
** Copyright 2005-2009 Christoph Oelckers
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
**
*/
#include <string>
#include "resourcefile.h"
#include "wadext.h"
std::string ExtractFileBase(const char* path, bool include_extension);
//==========================================================================
//
//
//
//==========================================================================
struct RFFInfo
{
// Should be "RFF\x18"
uint32_t Magic;
uint32_t Version;
uint32_t DirOfs;
uint32_t NumLumps;
};
struct RFFLump
{
uint32_t DontKnow1[4];
uint32_t FilePos;
uint32_t Size;
uint32_t DontKnow2;
uint32_t Time;
uint8_t Flags;
char Extension[3];
char Name[8];
uint32_t IndexNum; // Used by .sfx, possibly others
};
//==========================================================================
//
// BloodCrypt
//
//==========================================================================
void BloodCrypt (void *data, int key, int len)
{
int p = (uint8_t)key, i;
for (i = 0; i < len; ++i)
{
((uint8_t *)data)[i] ^= (unsigned char)(p+(i>>1));
}
}
//==========================================================================
//
// Initializes a Blood RFF file
//
//==========================================================================
void RffExtract(const char* filename, FILE* f)
{
uint32_t NumLumps;
RFFInfo header;
fread(&header, 1, sizeof(header), f);
NumLumps = header.NumLumps;
header.DirOfs = header.DirOfs;
TArray<RFFLump> lumps(NumLumps, true);
fseek (f, header.DirOfs, SEEK_SET);
fread(lumps.Data(), header.NumLumps, sizeof(RFFLump), f);
BloodCrypt (lumps.Data(), header.DirOfs, header.NumLumps * sizeof(RFFLump));
auto name = ExtractFileBase(filename, false);
mkdir(name.c_str());
chdir(name.c_str());
for (uint32_t i = 0; i < NumLumps; ++i)
{
TArray<char> buffer(lumps[i].Size, true);
fseek(f, lumps[i].FilePos, SEEK_SET);
fread(buffer.Data(), 1, lumps[i].Size, f);
// Rearrange the name and extension to construct the fullname.
char fn[128];
bool mustuseid =
!memcmp(lumps[i].Extension, "KVX", 3) ||
!memcmp(lumps[i].Extension, "PLU", 3) ||
!memcmp(lumps[i].Extension, "QAV", 3) ||
!memcmp(lumps[i].Extension, "PAL", 3) ||
!memcmp(lumps[i].Extension, "SEQ", 3) ||
!memcmp(lumps[i].Extension, "SFX", 3); // these are the data types only loaded by ID, so for them even 0 must be emitted.
if (lumps[i].IndexNum != 0 || mustuseid)
{
snprintf(fn, 128, "%.8s.{%d}.%.3s", lumps[i].Name, lumps[i].IndexNum, lumps[i].Extension);
}
else
{
snprintf(fn, 128, "%.8s.%.3s", lumps[i].Name, lumps[i].Extension);
}
if (lumps[i].Flags & 0x10)
{
int cryptlen = std::min<int> (lumps[i].Size, 256);
uint8_t *data = (uint8_t *)buffer.Data();
for (int i = 0; i < cryptlen; ++i)
{
data[i] ^= i >> 1;
}
}
FILE *fo = fopen(fn, "wb");
if (fo)
{
fwrite(buffer.Data(), 1, lumps[i].Size, fo);
fclose (fo);
}
}
}