68 lines
2.3 KiB
C
68 lines
2.3 KiB
C
|
#include "pch.h"
|
||
|
|
#pragma hdrstop
|
||
|
|
|
||
|
|
// External function prototypes
|
||
|
|
FARPROC
|
||
|
|
WINAPI
|
||
|
|
DelayLoadFailureHook (
|
||
|
|
LPCSTR pszDllName,
|
||
|
|
LPCSTR pszProcName
|
||
|
|
);
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// This function is for people who statically link to dload.lib so that
|
||
|
|
// the can get all of kernel32's dload error stubs on any os <= Whistler.
|
||
|
|
//
|
||
|
|
|
||
|
|
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
||
|
|
//
|
||
|
|
// NOTE: You should ONLY use this if you have a binary that must run on NT4, win2k, win9x, etc.
|
||
|
|
// If your binary is whistler or greater, use DLOAD_ERROR_HANDLER=kernel32 in your
|
||
|
|
// sources file instead.
|
||
|
|
//
|
||
|
|
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
||
|
|
|
||
|
|
FARPROC
|
||
|
|
WINAPI
|
||
|
|
Downlevel_DelayLoadFailureHook(
|
||
|
|
UINT unReason,
|
||
|
|
PDelayLoadInfo pDelayInfo
|
||
|
|
)
|
||
|
|
{
|
||
|
|
FARPROC ReturnValue = NULL;
|
||
|
|
|
||
|
|
// For a failed LoadLibrary, we will return the HINSTANCE of this DLL.
|
||
|
|
// This will cause the loader to try a GetProcAddress on our DLL for the
|
||
|
|
// function. This will subsequently fail and then we will be called
|
||
|
|
// for dliFailGetProc below.
|
||
|
|
if (dliFailLoadLib == unReason)
|
||
|
|
{
|
||
|
|
// HACKHACK (reinerf)
|
||
|
|
//
|
||
|
|
// For ORDINAL delayload failures we cannot just return our base addr and be done with everything. The problem
|
||
|
|
// is that the linker stub code will turn around and call GetProcAddress() some random ordinal which probably
|
||
|
|
// exists and is definately NOT the correct function.
|
||
|
|
//
|
||
|
|
// So to get around this problem we return -1 for a the hModule, which should cause GetProcAddress(-1, ...) to
|
||
|
|
// always fail. This is good, because the linker code will call us back for the GetProcAddress failure and we
|
||
|
|
// can then return the stub error handler proc.
|
||
|
|
ReturnValue = (FARPROC)-1;
|
||
|
|
}
|
||
|
|
else if (dliFailGetProc == unReason)
|
||
|
|
{
|
||
|
|
// The loader is asking us to return a pointer to a procedure.
|
||
|
|
// Lookup the handler for this DLL/procedure and, if found, return it.
|
||
|
|
ReturnValue = DelayLoadFailureHook(pDelayInfo->szDll, pDelayInfo->dlp.szProcName);
|
||
|
|
|
||
|
|
if (ReturnValue)
|
||
|
|
{
|
||
|
|
// Do this on behalf of the handler now that it is about to
|
||
|
|
// be called.
|
||
|
|
SetLastError(ERROR_MOD_NOT_FOUND);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return ReturnValue;
|
||
|
|
}
|