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Windows: Partially implement the registry read API

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This commit is contained in:
Billy Laws 2024-08-07 15:45:40 +00:00
parent 3cbc421c7e
commit 16b007df33
2 changed files with 80 additions and 0 deletions
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62
Source/Windows/Common/WinAPI/Misc.cpp
View File

@ -122,3 +122,65 @@ DLLEXPORT_FUNC(DWORD, GetLastError, ()) {
DLLEXPORT_FUNC(void, SetLastError, (DWORD dwErrCode)) {
GetCurrentTEB()->LastErrorValue = dwErrCode;
}
DLLEXPORT_FUNC(LONG, RegOpenKeyExA, (HKEY hKey, LPCSTR lpSubKey, DWORD ulOptions, REGSAM samDesired, PHKEY phkResult)) {
if (hKey != HKEY_LOCAL_MACHINE) {
UNIMPLEMENTED();
}
ScopedUnicodeString RootKey {"\\Registry\\Machine"};
OBJECT_ATTRIBUTES ObjAttributes;
InitializeObjectAttributes(&ObjAttributes, &*RootKey, OBJ_CASE_INSENSITIVE, nullptr, nullptr);
HKEY HKLM;
NTSTATUS Status = NtOpenKeyEx(reinterpret_cast<HANDLE*>(&HKLM), MAXIMUM_ALLOWED, &ObjAttributes, 0);
if (Status) {
return RtlNtStatusToDosError(Status);
}
ScopedUnicodeString SubKey {lpSubKey};
InitializeObjectAttributes(&ObjAttributes, &*SubKey, OBJ_CASE_INSENSITIVE, reinterpret_cast<HANDLE>(HKLM), nullptr);
Status = NtOpenKeyEx(reinterpret_cast<HANDLE*>(phkResult), samDesired, &ObjAttributes, ulOptions);
NtClose(HKLM);
return RtlNtStatusToDosError(Status);
}
DLLEXPORT_FUNC(LONG, RegGetValueA, (HKEY hKey, LPCSTR lpSubKey, LPCSTR lpValue, DWORD dwFlags, LPDWORD pdwType, PVOID pvData, LPDWORD pcbData)) {
if (lpSubKey || dwFlags) {
UNIMPLEMENTED();
}
ScopedUnicodeString ValueName {lpValue};
union {
KEY_VALUE_PARTIAL_INFORMATION Info;
uint8_t Buf[512];
} Data;
ULONG OutSize;
NTSTATUS Status = NtQueryValueKey(hKey, &*ValueName, KeyValuePartialInformation, &Data.Info, sizeof(Data), &OutSize);
if (Status) {
return RtlNtStatusToDosError(Status);
}
if (pdwType) {
*pdwType = Data.Info.Type;
}
if (pvData) {
if (*pcbData < Data.Info.DataLength) {
*pcbData = Data.Info.DataLength;
return ERROR_MORE_DATA;
}
memcpy(pvData, &Data.Info.Data, Data.Info.DataLength);
}
if (pcbData) {
*pcbData = Data.Info.DataLength;
}
return ERROR_SUCCESS;
}
DLLEXPORT_FUNC(LONG, RegCloseKey, (HKEY hKey)) {
return RtlNtStatusToDosError(NtClose(hKey));
}

18
Source/Windows/include/winternl.h
View File

@ -415,6 +415,22 @@ typedef enum _MEMORY_INFORMATION_CLASS {
#endif
} MEMORY_INFORMATION_CLASS;
typedef enum _KEY_VALUE_INFORMATION_CLASS {
KeyValueBasicInformation,
KeyValueFullInformation,
KeyValuePartialInformation,
KeyValueFullInformationAlign64,
KeyValuePartialInformationAlign64,
KeyValueLayerInformation,
} KEY_VALUE_INFORMATION_CLASS;
typedef struct _KEY_VALUE_PARTIAL_INFORMATION {
ULONG TitleIndex;
ULONG Type;
ULONG DataLength;
UCHAR Data[1];
} KEY_VALUE_PARTIAL_INFORMATION, *PKEY_VALUE_PARTIAL_INFORMATION;
NTSTATUS WINAPIV DbgPrint(LPCSTR fmt, ...);
NTSTATUS WINAPI LdrDisableThreadCalloutsForDll(HMODULE);
NTSTATUS WINAPI LdrGetDllHandle(LPCWSTR, ULONG, const UNICODE_STRING*, HMODULE*);
@ -426,8 +442,10 @@ NTSTATUS WINAPI NtFlushInstructionCache(HANDLE, LPCVOID, SIZE_T);
NTSTATUS WINAPI NtFreeVirtualMemory(HANDLE, PVOID*, SIZE_T*, ULONG);
NTSTATUS WINAPI NtGetContextThread(HANDLE, CONTEXT*);
ULONG WINAPI NtGetCurrentProcessorNumber(void);
NTSTATUS WINAPI NtOpenKeyEx(PHANDLE, ACCESS_MASK, const OBJECT_ATTRIBUTES*, ULONG);
NTSTATUS WINAPI NtProtectVirtualMemory(HANDLE, PVOID*, SIZE_T*, ULONG, ULONG*);
NTSTATUS WINAPI NtQueryAttributesFile(const OBJECT_ATTRIBUTES*, FILE_BASIC_INFORMATION*);
NTSTATUS WINAPI NtQueryValueKey(HANDLE, const UNICODE_STRING*, KEY_VALUE_INFORMATION_CLASS, void*, DWORD, DWORD*);
NTSTATUS WINAPI NtQueryVirtualMemory(HANDLE, LPCVOID, MEMORY_INFORMATION_CLASS, PVOID, SIZE_T, SIZE_T*);
NTSTATUS WINAPI NtReadFile(HANDLE, HANDLE, PIO_APC_ROUTINE, PVOID, PIO_STATUS_BLOCK, PVOID, ULONG, PLARGE_INTEGER, PULONG);
NTSTATUS WINAPI NtSetContextThread(HANDLE, const CONTEXT*);