/*
=============
Sys_LoadImage
=============
*/
void Sys_LoadImage( ){
void *dl;
char *error;
char module[MAX_OSPATH];
Com_sprintf(module, sizeof(module), "%s/%s", Sys_BinaryPath(), COD4_DLL);
if(!Sys_LoadImagePrepareFile( module ))
{
printf("An error has occurred. Exiting...\n");
_exit(1);
}
dl = dlopen(module, RTLD_LAZY);
if(dl == NULL)
{
error = dlerror();
printf("Failed to load required module: %s Error: %s\n", module, error);
_exit(1);
}
/* No retrieving of symbols where none are :( */
if(!Sys_PatchImage())
{
printf("Failed to patch module: %s\n", module);
_exit(1);
}
}
/*
=============
Sys_LoadImage
=============
*/
qboolean Sys_LoadImage( ){
byte *fileimage;
int len;
/* Is this file here ? */
len = FS_FOpenFileRead(BIN_FILENAME, NULL);
if(len != DLLMOD_FILESIZE)
{/* Nope !*/
Sec_Update( qtrue );
len = FS_FOpenFileRead(BIN_FILENAME, NULL);
if(len != DLLMOD_FILESIZE)
{/* Nope !*/
Com_PrintError("Failed to load the CoD4 Game. Can not startup the game\n");
return qfalse;
}
}
Sec_Update( qfalse );
len = FS_ReadFile(BIN_FILENAME, (void**)&fileimage);
if(!fileimage)
{
Com_PrintError("Couldn't open "BIN_FILENAME". CoD4 can not startup.\n");
return qfalse;
}
if(len != DLLMOD_FILESIZE)
{
Com_PrintError(BIN_FILENAME" is corrupted! CoD4 can not startup.\n");
FS_FreeFile(fileimage);
return qfalse;
}
Com_Memcpy(BIN_SECT_TEXT_START, fileimage + BIN_SECT_TEXT_FOFFSET, BIN_SECT_TEXT_LENGTH);
Com_Memcpy(BIN_SECT_RODATA_START, fileimage + BIN_SECT_RODATA_FOFFSET, BIN_SECT_RODATA_LENGTH);
Com_Memcpy(BIN_SECT_DATA_START, fileimage + BIN_SECT_DATA_FOFFSET, BIN_SECT_DATA_LENGTH);
Com_Memset(BIN_SECT_PLT_START, 0xCC, BIN_SECT_PLT_LENGTH);
Sys_CoD4Linker();
FS_FreeFile(fileimage);
if(!Sys_PatchImage())
{
return qfalse;
}
if(Sys_MemoryProtectExec(BIN_SECT_PLT_START, BIN_SECT_PLT_LENGTH) == qfalse)
{
FS_FreeFile(fileimage);
return qfalse;
}
if(Sys_MemoryProtectExec(BIN_SECT_TEXT_START, BIN_SECT_TEXT_LENGTH) == qfalse)
{
FS_FreeFile(fileimage);
return qfalse;
}
if(Sys_MemoryProtectReadonly(BIN_SECT_RODATA_START, BIN_SECT_RODATA_LENGTH) == qfalse)
{
FS_FreeFile(fileimage);
return qfalse;
}
if(Sys_MemoryProtectWrite(BIN_SECT_DATA_START, BIN_SECT_DATA_LENGTH) == qfalse)
{
FS_FreeFile(fileimage);
return qfalse;
}
if(Sys_MemoryProtectWrite(BIN_SECT_BSS_START, BIN_SECT_BSS_LENGTH) == qfalse)
{
FS_FreeFile(fileimage);
return qfalse;
}
Sys_ImageRunInitFunctions();
return qtrue;
}
/*
=============
Sys_LoadImage
=============
*/
qboolean Sys_LoadImage( ){
byte *fileimage;
int len;
char hash[128];
long unsigned sizeofhash;
/* Is this file here ? */
len = FS_FOpenFileRead(BIN_FILENAME, NULL);
if(len != DLLMOD_FILESIZE)
{/* Nope !*/
Sec_Update( qtrue );
len = FS_FOpenFileRead(BIN_FILENAME, NULL);
if(len != DLLMOD_FILESIZE)
{/* Nope !*/
Com_PrintError("Failed to load the CoD4 Game. Can not startup the game\n");
return qfalse;
}
}
Sec_Update( qfalse );
len = FS_ReadFile(BIN_FILENAME, (void**)&fileimage);
if(!fileimage)
{
Com_PrintError("Couldn't open "BIN_FILENAME". CoD4 can not startup.\n");
return qfalse;
}
if(len != DLLMOD_FILESIZE)
{
Com_PrintError(BIN_FILENAME" has an invalid length! CoD4 can not startup.\n");
FS_FreeFile(fileimage);
return qfalse;
}
sizeofhash = sizeof(hash);
Sec_HashMemory(SEC_HASH_TIGER, fileimage, len, hash, &sizeofhash, qfalse);
if(Q_stricmp(hash ,DLLMOD_HASH))
{
Com_Printf("Tiger = %s\n", hash);
Com_PrintError(BIN_FILENAME" checksum missmatch! CoD4 can not startup.\n");
FS_FreeFile(fileimage);
return qfalse;
}
Com_Memcpy(BIN_SECT_TEXT_START, fileimage + BIN_SECT_TEXT_FOFFSET, BIN_SECT_TEXT_LENGTH);
Com_Memcpy(BIN_SECT_RODATA_START, fileimage + BIN_SECT_RODATA_FOFFSET, BIN_SECT_RODATA_LENGTH);
Com_Memcpy(BIN_SECT_DATA_START, fileimage + BIN_SECT_DATA_FOFFSET, BIN_SECT_DATA_LENGTH);
Com_Memset(BIN_SECT_PLT_START, 0xCC, BIN_SECT_PLT_LENGTH);
Sys_CoD4Linker();
FS_FreeFile(fileimage);
if(!Sys_PatchImage())
{
return qfalse;
}
/* The order here is crucial as this sections will overlap */
if(Sys_MemoryProtectReadonly(BIN_SECT_RODATA_START, BIN_SECT_RODATA_LENGTH) == qfalse)
{
FS_FreeFile(fileimage);
return qfalse;
}
if(Sys_MemoryProtectWrite(BIN_SECT_DATA_START, BIN_SECT_DATA_LENGTH) == qfalse)
{
FS_FreeFile(fileimage);
return qfalse;
}
if(Sys_MemoryProtectWrite(BIN_SECT_BSS_START, BIN_SECT_BSS_LENGTH) == qfalse)
{
FS_FreeFile(fileimage);
return qfalse;
}
/* 4 bytes is gap between .plt end and .text start */
if(Sys_MemoryProtectExec(BIN_SECT_PLT_START, BIN_SECT_PLT_LENGTH + BIN_SECT_TEXT_LENGTH + 4) == qfalse)
{
FS_FreeFile(fileimage);
return qfalse;
}
Sys_ImageRunInitFunctions();
return qtrue;
}