105 lines
2.4 KiB
C++
105 lines
2.4 KiB
C++
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#include "precomp.h"
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// This module has been given an official blessing to use the str routines.
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#include "LegalStr.h"
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IMPLEMENT_SHIM_BEGIN(Win2kPropagateLayer)
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#include "ShimHookMacro.h"
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#include <stdarg.h>
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#include <string.h>
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#include <stdio.h>
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#define APPCOMPAT_KEYW L"\\Registry\\Machine\\System\\CurrentControlSet\\Control\\Session Manager\\AppCompatibility"
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BOOL
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CleanupRegistryForCurrentExe(
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void
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)
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{
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NTSTATUS status;
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OBJECT_ATTRIBUTES objA;
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HANDLE hkey;
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WCHAR wszExeName[MAX_PATH];
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WCHAR wszKey[MAX_PATH];
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UNICODE_STRING strKey;
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UNICODE_STRING strValue;
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DWORD dwChars = GetModuleFileNameW(NULL, wszExeName, MAX_PATH);
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if (dwChars == 0) {
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return FALSE;
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}
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WCHAR* pwsz = wszExeName + dwChars;
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while (pwsz >= wszExeName) {
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if (*pwsz == '\\') {
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break;
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}
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pwsz--;
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}
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pwsz++;
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LOGN(
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eDbgLevelInfo,
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"[CleanupRegistryForCurrentExe] Cleanup for \"%S\"",
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pwsz);
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swprintf(wszKey, L"%s\\%s", APPCOMPAT_KEYW, pwsz);
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RtlInitUnicodeString(&strKey, wszKey);
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InitializeObjectAttributes(&objA,
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&strKey,
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OBJ_CASE_INSENSITIVE,
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NULL,
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NULL);
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status = NtOpenKey(&hkey,
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MAXIMUM_ALLOWED,
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&objA);
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if (!NT_SUCCESS(status)) {
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LOGN(
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eDbgLevelError,
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"[CleanupRegistryForCurrentExe] Failed to open key \"%S\"",
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wszKey);
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return TRUE;
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}
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RtlInitUnicodeString(&strValue, L"DllPatch-y");
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NtDeleteValueKey(hkey, &strValue);
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RtlInitUnicodeString(&strValue, L"y");
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NtDeleteValueKey(hkey, &strValue);
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//
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// Now check to see if there are any more values under this key.
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// Delete it if there are no more values.
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//
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KEY_FULL_INFORMATION keyInfo;
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DWORD dwReturnLength = 0;
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status = NtQueryKey(hkey,
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KeyFullInformation,
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&keyInfo,
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sizeof(keyInfo),
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&dwReturnLength);
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if (NT_SUCCESS(status) && keyInfo.Values == 0) {
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NtDeleteKey(hkey);
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}
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NtClose(hkey);
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return TRUE;
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}
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IMPLEMENT_SHIM_END
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