Function DetourAttachEx

lib_fiber/cpp/src/detours/detours.cpp:1998–2350

}

LONG WINAPI DetourAttachEx(_Inout_ PVOID *ppPointer,
                           _In_ PVOID pDetour,
                           _Out_opt_ PDETOUR_TRAMPOLINE *ppRealTrampoline,
                           _Out_opt_ PVOID *ppRealTarget,
                           _Out_opt_ PVOID *ppRealDetour)
{
    LONG error = NO_ERROR;

    if (ppRealTrampoline != NULL) {
        *ppRealTrampoline = NULL;
    }
    if (ppRealTarget != NULL) {
        *ppRealTarget = NULL;
    }
    if (ppRealDetour != NULL) {
        *ppRealDetour = NULL;
    }
    if (pDetour == NULL) {
        DETOUR_TRACE(("empty detour\n"));
        return ERROR_INVALID_PARAMETER;
    }

    if (s_nPendingThreadId != (LONG)GetCurrentThreadId()) {
        DETOUR_TRACE(("transaction conflict with thread id=%ld\n", s_nPendingThreadId));
        return ERROR_INVALID_OPERATION;
    }

    // If any of the pending operations failed, then we don't need to do this.
    if (s_nPendingError != NO_ERROR) {
        DETOUR_TRACE(("pending transaction error=%ld\n", s_nPendingError));
        return s_nPendingError;
    }

    if (ppPointer == NULL) {
        DETOUR_TRACE(("ppPointer is null\n"));
        return ERROR_INVALID_HANDLE;
    }
    if (*ppPointer == NULL) {
        error = ERROR_INVALID_HANDLE;
        s_nPendingError = error;
        s_ppPendingError = ppPointer;
        DETOUR_TRACE(("*ppPointer is null (ppPointer=%p)\n", ppPointer));
        DETOUR_BREAK();
        return error;
    }

    PBYTE pbTarget = (PBYTE)*ppPointer;
    PDETOUR_TRAMPOLINE pTrampoline = NULL;
    DetourOperation *o = NULL;

#ifdef DETOURS_IA64
    PPLABEL_DESCRIPTOR ppldDetour = (PPLABEL_DESCRIPTOR)pDetour;
    PPLABEL_DESCRIPTOR ppldTarget = (PPLABEL_DESCRIPTOR)pbTarget;
    PVOID pDetourGlobals = NULL;
    PVOID pTargetGlobals = NULL;

    pDetour = (PBYTE)DetourCodeFromPointer(ppldDetour, &pDetourGlobals);
    pbTarget = (PBYTE)DetourCodeFromPointer(ppldTarget, &pTargetGlobals);