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- fixed and cleaned up file_whres.cpp

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This commit is contained in:
Christoph Oelckers 2023-08-19 15:18:45 +02:00
parent f0bbc32bae
commit 959d0e93f7
1 changed files with 19 additions and 14 deletions
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33
src/common/filesystem/file_whres.cpp
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@ -35,7 +35,9 @@
*/
#include "resourcefile.h"
#include "cmdlib.h"
#include "fs_swap.h"
using namespace fs_private;
#include "fs_swap.h"
@ -54,7 +56,7 @@ using namespace fs_private;
class FWHResFile : public FUncompressedFile
{
FString basename;
std::string basename;
public:
FWHResFile(const char * filename, FileReader &file);
bool Open(LumpFilterInfo* filter);
@ -72,7 +74,7 @@ public:
FWHResFile::FWHResFile(const char *filename, FileReader &file)
: FUncompressedFile(filename, file)
{
basename = ExtractFileBase(filename, false);
basename = ExtractBaseName(filename, false);
}
//==========================================================================
@ -83,7 +85,7 @@ FWHResFile::FWHResFile(const char *filename, FileReader &file)
bool FWHResFile::Open(LumpFilterInfo*)
{
int directory[1024];
uint32_t directory[1024];
Reader.Seek(-4096, FileReader::SeekEnd);
Reader.Read(directory, 4096);
@ -95,11 +97,13 @@ bool FWHResFile::Open(LumpFilterInfo*)
int i = 0;
for(int k = 0; k < nl; k++)
{
int offset = LittleLong(directory[k*3]) * 4096;
int length = LittleLong(directory[k*3+1]);
if (length <= 0) break;
FStringf synthname("%s/%04d", basename.GetChars(), k);
Lumps[i].LumpNameSetup(synthname);
uint32_t offset = LittleLong(directory[k*3]) * 4096;
uint32_t length = LittleLong(directory[k*3+1]);
if (length == 0) break;
char num[5];
snprintf(num, 5, "/%04d", k);
std::string synthname = basename + num;
Lumps[i].LumpNameSetup(synthname.c_str());
Lumps[i].Owner = this;
Lumps[i].Position = offset;
Lumps[i].LumpSize = length;
@ -122,19 +126,20 @@ FResourceFile *CheckWHRes(const char *filename, FileReader &file, LumpFilterInfo
{
if (file.GetLength() >= 8192) // needs to be at least 8192 to contain one file and the directory.
{
int directory[1024];
unsigned directory[1024];
int nl =1024/3;
file.Seek(-4096, FileReader::SeekEnd);
file.Read(directory, 4096);
auto size = file.GetLength();
int checkpos = 0;
uint32_t checkpos = 0;
for(int k = 0; k < nl; k++)
{
int offset = LittleLong(directory[k*3]);
int length = LittleLong(directory[k*3+1]);
unsigned offset = LittleLong(directory[k*3]);
unsigned length = LittleLong(directory[k*3+1]);
if (length <= 0 && offset == 0) break;
if (offset != checkpos || length <= 0) return nullptr;
if (offset != checkpos || length == 0 || offset + length >= (size_t)size - 4096 ) return nullptr;
checkpos += (length+4095) / 4096;
}
auto rf = new FWHResFile(filename, file);