int
hook_libdl(const char *libpath) {
void *handle, *original;
handle = dlopen(libpath, RTLD_LAZY);
if(handle == NULL)
return -1;
//
original = elf_hook(libpath,
LIBRARY_ADDRESS_BY_HANDLE(handle),
"dlopen", (const void *) hook_dlopen);
if(original == NULL)
return -1;
//
original = elf_hook(libpath,
LIBRARY_ADDRESS_BY_HANDLE(handle),
"dlsym", (const void *) hook_dlsym);
if(original == NULL)
return -1;
//
return 0;
}
int
hook_lib_generic(const char *libpath, void *handle, const char *name, void *func) {
void *original;
if(handle == NULL)
return -1;
original = elf_hook(libpath,
LIBRARY_ADDRESS_BY_HANDLE(handle),
name, (const void *) func);
if(original == NULL)
return -1;
ga_error("hook library - %s:%s success.\n", libpath, name);
return 0;
}
int PbSVLoadModule()
{
char hash[128];
long unsigned sizeofhash;
char modname[256];
char modname_dest[256];
const char* dlname;
const char* dlname2;
byte* imagebase;
if ( pbsv.hLibModule )
{
return 0;
}
PbSvUnload();
if ( FS_FileExistsOSPath( PbSv6makefn(modname, "pbsvnew" DLL_EXT) ) == qtrue )
{
Sys_Chmod( PbSv6makefn(modname, "pbsvold" DLL_EXT), 0777);
FS_RemoveOSPath( PbSv6makefn(modname, "pbsvold" DLL_EXT) );
rename( PbSv6makefn(modname, "pbsv" DLL_EXT), PbSv6makefn(modname_dest, "pbsvold" DLL_EXT) );
Sys_Chmod( PbSv6makefn(modname, "pbsv" DLL_EXT), 0777);
FS_RemoveOSPath( PbSv6makefn(modname, "pbsv" DLL_EXT) );
rename( PbSv6makefn(modname, "pbsvnew" DLL_EXT), PbSv6makefn(modname_dest, "pbsv" DLL_EXT) );
}
if(com_securemode)
{
dlname = PbSv6makefn(modname, "pbag" DLL_EXT);
dlname2 = PbSv6makefn(modname_dest, "pbags" DLL_EXT);
if ( FS_FileExistsOSPath( dlname ) == qtrue )
{
FS_RemoveOSPath( dlname2 );
rename( dlname ,dlname2 );
FS_RemoveOSPath( dlname );
}
hash[0] = '\0';
sizeofhash = sizeof(hash);
Sec_HashFile(SEC_HASH_TIGER, dlname2, hash, &sizeofhash, qfalse);
if(Q_stricmp(hash ,PBAG_HASH))
{
Com_Printf("Tiger = %s\n", hash);
Com_PrintError("%s checksum missmatch! PunkBuster will not startup in securemode when the checksum is invalid.\n", dlname2);
return 1;
}
dlname = PbSv6makefn(modname, "pbcl" DLL_EXT);
dlname2 = PbSv6makefn(modname_dest, "pbcls" DLL_EXT);
if ( FS_FileExistsOSPath( dlname ) == qtrue )
{
FS_RemoveOSPath( dlname2 );
rename( dlname ,dlname2 );
FS_RemoveOSPath( dlname );
}
hash[0] = '\0';
sizeofhash = sizeof(hash);
Sec_HashFile(SEC_HASH_TIGER, dlname2, hash, &sizeofhash, qfalse);
if(Q_stricmp(hash ,PBCL_HASH))
{
Com_Printf("Tiger = %s\n", hash);
Com_PrintError("%s checksum missmatch! PunkBuster will not startup in securemode when the checksum is invalid.\n", dlname2);
return 1;
}
dlname2 = PbSv6makefn(modname, "pbsv" DLL_EXT);
hash[0] = '\0';
sizeofhash = sizeof(hash);
Sec_HashFile(SEC_HASH_TIGER, dlname2, hash, &sizeofhash, qfalse);
if(Q_stricmp(hash ,PBSV_HASH))
{
Com_Printf("Tiger = %s\n", hash);
Com_PrintError("%s checksum missmatch! PunkBuster will not startup in securemode when the checksum is invalid.\n", dlname2);
return 1;
}
}
dlname = PbSv6makefn(modname, "pbsv" DLL_EXT);
pbsv.hLibModule = Sys_LoadLibrary( dlname );
if ( pbsv.hLibModule == NULL )
{
return 1;
}
if(com_securemode)
{
/* Remove system() */
imagebase = LIBRARY_ADDRESS_BY_HANDLE( pbsv.hLibModule );
if(Sys_MemoryProtectWrite( (void*)(imagebase + 0x4c6e0), 0xdfdf7 ) == qfalse)
{
return 1;
}
SetCall((DWORD)(imagebase + 0x114346), PB_SystemDummy);
SetCall((DWORD)(imagebase + 0xc23cb), PB_SystemDummy);
if(Sys_MemoryProtectExec( (void*)(imagebase + 0x4c6e0), 0xdfdf7 ) == qfalse)
{
return 1;
}
}
pbsv.sa = Sys_GetProcedure( "sa" );
pbsv.sb = Sys_GetProcedure( "sb" );
if ( pbsv.sa && pbsv.sb ){
pbsv.wantdisable = 0;
return 0;
}else{
PbSvUnload();
return 1;
}
}
