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168 lines
4.3 KiB
C
168 lines
4.3 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS system libraries
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* FILE: lib/rtl/propvar.c
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* PURPOSE: Native properties and variants API
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* PROGRAMMER: Pierre Schweitzer (pierre@reactos.org)
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*/
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/* INCLUDES *****************************************************************/
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#include <rtl.h>
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#define NDEBUG
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#include <debug.h>
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/* FUNCTIONS ***************************************************************/
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UNICODE_STRING Old32Dll = RTL_CONSTANT_STRING(L"ole32.dll");
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/* FIXME: (or not)
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* Define those here to allow build. They don't need to be dereferenced
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* so it's OK.
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* Furthermore till Vista those Ole32 API were private so those defines
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* should be made in a private header
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* Finally, having those defined that way allows to write that code plain C.
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*/
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typedef PVOID PPMemoryAllocator;
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typedef PVOID PSERIALIZEDPROPERTYVALUE;
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/*
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* @implemented
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*/
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PVOID
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LoadOle32Export(PVOID * BaseAddress, const PCHAR ProcedureName)
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{
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NTSTATUS Status;
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ANSI_STRING ExportName;
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PVOID ProcedureAddress;
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/* First load ole32.dll */
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Status = LdrLoadDll(NULL, NULL, &Old32Dll, BaseAddress);
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if (!NT_SUCCESS(Status))
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{
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RtlRaiseStatus(Status);
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}
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RtlInitAnsiString(&ExportName, ProcedureName);
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/* Look for the procedure */
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Status = LdrGetProcedureAddress(*BaseAddress, &ExportName,
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0, &ProcedureAddress);
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if (!NT_SUCCESS(Status))
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{
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RtlRaiseStatus(Status);
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}
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/* Return its address */
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return ProcedureAddress;
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}
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/*
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* @implemented
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*/
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ULONG
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NTAPI
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PropertyLengthAsVariant(IN PSERIALIZEDPROPERTYVALUE pProp,
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IN ULONG cbProp,
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IN USHORT CodePage,
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IN BYTE bReserved)
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{
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ULONG Length = 0;
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PVOID BaseAddress = NULL;
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ULONG (*ProcedureAddress)(PSERIALIZEDPROPERTYVALUE, ULONG, USHORT, BYTE);
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_SEH2_TRY
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{
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/* Simply call the appropriate Ole32 export */
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ProcedureAddress = LoadOle32Export(&BaseAddress,
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"StgPropertyLengthAsVariant");
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Length = ProcedureAddress(pProp, cbProp, CodePage, bReserved);
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}
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_SEH2_FINALLY
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{
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if (BaseAddress != NULL)
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{
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LdrUnloadDll(BaseAddress);
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}
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}
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_SEH2_END;
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return Length;
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}
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/*
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* @implemented
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*/
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BOOLEAN
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NTAPI
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RtlConvertPropertyToVariant(IN PSERIALIZEDPROPERTYVALUE prop,
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IN USHORT CodePage,
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OUT PROPVARIANT * pvar,
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IN PPMemoryAllocator pma)
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{
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BOOLEAN Success = FALSE;
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PVOID BaseAddress = NULL;
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BOOLEAN (*ProcedureAddress)(PSERIALIZEDPROPERTYVALUE, USHORT, PROPVARIANT*, PPMemoryAllocator);
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_SEH2_TRY
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{
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/* Simply call the appropriate Ole32 export */
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ProcedureAddress = LoadOle32Export(&BaseAddress,
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"StgConvertPropertyToVariant");
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Success = ProcedureAddress(prop, CodePage, pvar, pma);
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}
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_SEH2_FINALLY
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{
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if (BaseAddress != NULL)
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{
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LdrUnloadDll(BaseAddress);
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}
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}
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_SEH2_END;
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return Success;
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}
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/*
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* @implemented
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*/
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PSERIALIZEDPROPERTYVALUE
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NTAPI
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RtlConvertVariantToProperty(IN const PROPVARIANT * pvar,
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IN USHORT CodePage,
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OUT PSERIALIZEDPROPERTYVALUE pprop OPTIONAL,
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IN OUT PULONG pcb,
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IN PROPID pid,
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IN BOOLEAN fReserved,
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IN OUT PULONG pcIndirect OPTIONAL)
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{
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PSERIALIZEDPROPERTYVALUE Serialized = NULL;
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PVOID BaseAddress = NULL;
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PSERIALIZEDPROPERTYVALUE (*ProcedureAddress)(const PROPVARIANT*, USHORT, PSERIALIZEDPROPERTYVALUE,
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PULONG, PROPID, BOOLEAN, PULONG);
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_SEH2_TRY
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{
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/* Simply call the appropriate Ole32 export */
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ProcedureAddress = LoadOle32Export(&BaseAddress,
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"StgConvertVariantToProperty");
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Serialized = ProcedureAddress(pvar, CodePage, pprop, pcb, pid, fReserved, pcIndirect);
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}
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_SEH2_FINALLY
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{
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if (BaseAddress != NULL)
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{
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LdrUnloadDll(BaseAddress);
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}
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}
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_SEH2_END;
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return Serialized;
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}
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/* EOF */
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