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#include "pch.h"
#include "filesystem.h"
#include "hooks.h"
#include "hookutils.h"
#include "sourceinterface.h"
// hook forward declares
typedef FileHandle_t(*ReadFileFromVPKType)(VPKData* vpkInfo, __int64* b, const char* filename);
ReadFileFromVPKType readFileFromVPK;
FileHandle_t ReadFileFromVPKHook(VPKData* vpkInfo, __int64* b, const char* filename);
typedef bool(*ReadFromCacheType)(IFileSystem* filesystem, const char* path, void* result);
ReadFromCacheType readFromCache;
bool ReadFromCacheHook(IFileSystem* filesystem, const char* path, void* result);
SourceInterface<IFileSystem>* g_Filesystem;
void InitialiseFilesystem(HMODULE baseAddress)
{
g_Filesystem = new SourceInterface<IFileSystem>("filesystem_stdio.dll", "VFileSystem017");
// create hooks
HookEnabler hook;
ENABLER_CREATEHOOK(hook, (char*)baseAddress + 0x5CBA0, &ReadFileFromVPKHook, reinterpret_cast<LPVOID*>(&readFileFromVPK));
ENABLER_CREATEHOOK(hook, (*g_Filesystem)->m_vtable->ReadFromCache, &ReadFromCacheHook, reinterpret_cast<LPVOID*>(&readFromCache));
}
bool ShouldReplaceFile(const char* path)
{
return false;
}
FileHandle_t ReadFileFromVPKHook(VPKData* vpkInfo, __int64* b, const char* filename)
{
// move this to a convar at some point when we can read them in native
//spdlog::info("ReadFileFromVPKHook {} {}", filename, vpkInfo->path);
if (ShouldReplaceFile(filename))
{
*b = -1;
return b;
}
return readFileFromVPK(vpkInfo, b, filename);
}
bool ReadFromCacheHook(IFileSystem* filesystem, const char* path, void* result)
{
// move this to a convar at some point when we can read them in native
//spdlog::info("ReadFromCacheHook {}", path);
return readFromCache(filesystem, path, result);
}
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