mirror of
https://github.com/reactos/reactos.git
synced 2024-08-30 15:18:33 +00:00
270 lines
7.6 KiB
C
270 lines
7.6 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/ppb.c
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* PURPOSE: Process parameters functions
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* PROGRAMMER: Ariadne ( ariadne@xs4all.nl)
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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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/* MACROS ****************************************************************/
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#define NORMALIZE(x,addr) {if(x) x=(PVOID)((ULONG_PTR)(x)+(ULONG_PTR)(addr));}
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#define DENORMALIZE(x,addr) {if(x) x=(PVOID)((ULONG_PTR)(x)-(ULONG_PTR)(addr));}
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#define ALIGN(x,align) (((ULONG)(x)+(align)-1UL)&(~((align)-1UL)))
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/* FUNCTIONS ****************************************************************/
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static __inline VOID
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RtlpCopyParameterString(PWCHAR *Ptr,
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PUNICODE_STRING Destination,
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PUNICODE_STRING Source,
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USHORT Size)
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{
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Destination->Length = Source->Length;
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Destination->MaximumLength = Size ? Size : Source->MaximumLength;
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Destination->Buffer = (PWCHAR)(*Ptr);
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if (Source->Length)
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memmove (Destination->Buffer, Source->Buffer, Source->Length);
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Destination->Buffer[Destination->Length / sizeof(WCHAR)] = 0;
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*Ptr += Destination->MaximumLength/sizeof(WCHAR);
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}
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/*
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* @implemented
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*/
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NTSTATUS NTAPI
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RtlCreateProcessParameters(PRTL_USER_PROCESS_PARAMETERS *ProcessParameters,
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PUNICODE_STRING ImagePathName,
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PUNICODE_STRING DllPath,
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PUNICODE_STRING CurrentDirectory,
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PUNICODE_STRING CommandLine,
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PWSTR Environment,
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PUNICODE_STRING WindowTitle,
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PUNICODE_STRING DesktopInfo,
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PUNICODE_STRING ShellInfo,
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PUNICODE_STRING RuntimeData)
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{
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PRTL_USER_PROCESS_PARAMETERS Param = NULL;
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ULONG Length = 0;
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PWCHAR Dest;
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UNICODE_STRING EmptyString;
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HANDLE CurrentDirectoryHandle;
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HANDLE ConsoleHandle;
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ULONG ConsoleFlags;
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DPRINT ("RtlCreateProcessParameters\n");
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RtlAcquirePebLock();
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EmptyString.Length = 0;
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EmptyString.MaximumLength = sizeof(WCHAR);
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EmptyString.Buffer = L"";
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if (RtlpGetMode() == UserMode)
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{
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if (DllPath == NULL)
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DllPath = &NtCurrentPeb()->ProcessParameters->DllPath;
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if (Environment == NULL)
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Environment = NtCurrentPeb()->ProcessParameters->Environment;
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if (CurrentDirectory == NULL)
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CurrentDirectory = &NtCurrentPeb()->ProcessParameters->CurrentDirectory.DosPath;
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CurrentDirectoryHandle = NtCurrentPeb()->ProcessParameters->CurrentDirectory.Handle;
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ConsoleHandle = NtCurrentPeb()->ProcessParameters->ConsoleHandle;
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ConsoleFlags = NtCurrentPeb()->ProcessParameters->ConsoleFlags;
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}
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else
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{
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if (DllPath == NULL)
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DllPath = &EmptyString;
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if (CurrentDirectory == NULL)
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CurrentDirectory = &EmptyString;
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CurrentDirectoryHandle = NULL;
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ConsoleHandle = NULL;
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ConsoleFlags = 0;
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}
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if (CommandLine == NULL)
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CommandLine = &EmptyString;
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if (WindowTitle == NULL)
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WindowTitle = &EmptyString;
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if (DesktopInfo == NULL)
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DesktopInfo = &EmptyString;
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if (ShellInfo == NULL)
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ShellInfo = &EmptyString;
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if (RuntimeData == NULL)
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RuntimeData = &EmptyString;
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/* size of process parameter block */
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Length = sizeof(RTL_USER_PROCESS_PARAMETERS);
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/* size of current directory buffer */
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Length += (MAX_PATH * sizeof(WCHAR));
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/* add string lengths */
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Length += ALIGN(DllPath->MaximumLength, sizeof(ULONG));
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Length += ALIGN(ImagePathName->Length + sizeof(WCHAR), sizeof(ULONG));
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Length += ALIGN(CommandLine->Length + sizeof(WCHAR), sizeof(ULONG));
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Length += ALIGN(WindowTitle->MaximumLength, sizeof(ULONG));
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Length += ALIGN(DesktopInfo->MaximumLength, sizeof(ULONG));
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Length += ALIGN(ShellInfo->MaximumLength, sizeof(ULONG));
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Length += ALIGN(RuntimeData->MaximumLength, sizeof(ULONG));
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/* Calculate the required block size */
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Param = RtlAllocateHeap(RtlGetProcessHeap(), HEAP_ZERO_MEMORY, Length);
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if (!Param)
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{
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RtlReleasePebLock();
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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DPRINT ("Process parameters allocated\n");
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Param->MaximumLength = Length;
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Param->Length = Length;
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Param->Flags = RTL_USER_PROCESS_PARAMETERS_NORMALIZED;
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Param->Environment = Environment;
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Param->CurrentDirectory.Handle = CurrentDirectoryHandle;
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Param->ConsoleHandle = ConsoleHandle;
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Param->ConsoleFlags = ConsoleFlags;
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Dest = (PWCHAR)(((PBYTE)Param) + sizeof(RTL_USER_PROCESS_PARAMETERS));
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/* copy current directory */
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RtlpCopyParameterString(&Dest,
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&Param->CurrentDirectory.DosPath,
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CurrentDirectory,
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MAX_PATH * sizeof(WCHAR));
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/* make sure the current directory has a trailing backslash */
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if (Param->CurrentDirectory.DosPath.Length > 0)
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{
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Length = Param->CurrentDirectory.DosPath.Length / sizeof(WCHAR);
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if (Param->CurrentDirectory.DosPath.Buffer[Length-1] != L'\\')
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{
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Param->CurrentDirectory.DosPath.Buffer[Length] = L'\\';
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Param->CurrentDirectory.DosPath.Buffer[Length + 1] = 0;
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Param->CurrentDirectory.DosPath.Length += sizeof(WCHAR);
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}
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}
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/* copy dll path */
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RtlpCopyParameterString(&Dest,
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&Param->DllPath,
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DllPath,
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0);
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/* copy image path name */
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RtlpCopyParameterString(&Dest,
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&Param->ImagePathName,
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ImagePathName,
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ImagePathName->Length + sizeof(WCHAR));
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/* copy command line */
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RtlpCopyParameterString(&Dest,
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&Param->CommandLine,
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CommandLine,
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CommandLine->Length + sizeof(WCHAR));
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/* copy title */
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RtlpCopyParameterString(&Dest,
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&Param->WindowTitle,
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WindowTitle,
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0);
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/* copy desktop */
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RtlpCopyParameterString(&Dest,
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&Param->DesktopInfo,
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DesktopInfo,
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0);
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/* copy shell info */
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RtlpCopyParameterString(&Dest,
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&Param->ShellInfo,
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ShellInfo,
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0);
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/* copy runtime info */
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RtlpCopyParameterString(&Dest,
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&Param->RuntimeData,
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RuntimeData,
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0);
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RtlDeNormalizeProcessParams(Param);
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*ProcessParameters = Param;
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RtlReleasePebLock();
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return STATUS_SUCCESS;
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}
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/*
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* @implemented
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*/
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NTSTATUS
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NTAPI
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RtlDestroyProcessParameters(IN PRTL_USER_PROCESS_PARAMETERS ProcessParameters)
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{
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RtlFreeHeap(RtlGetProcessHeap(), 0, ProcessParameters);
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return STATUS_SUCCESS;
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}
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/*
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* denormalize process parameters (Pointer-->Offset)
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*
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* @implemented
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*/
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PRTL_USER_PROCESS_PARAMETERS NTAPI
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RtlDeNormalizeProcessParams(PRTL_USER_PROCESS_PARAMETERS Params)
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{
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if (Params && (Params->Flags & RTL_USER_PROCESS_PARAMETERS_NORMALIZED))
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{
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DENORMALIZE(Params->CurrentDirectory.DosPath.Buffer, Params);
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DENORMALIZE(Params->DllPath.Buffer, Params);
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DENORMALIZE(Params->ImagePathName.Buffer, Params);
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DENORMALIZE(Params->CommandLine.Buffer, Params);
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DENORMALIZE(Params->WindowTitle.Buffer, Params);
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DENORMALIZE(Params->DesktopInfo.Buffer, Params);
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DENORMALIZE(Params->ShellInfo.Buffer, Params);
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DENORMALIZE(Params->RuntimeData.Buffer, Params);
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Params->Flags &= ~RTL_USER_PROCESS_PARAMETERS_NORMALIZED;
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}
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return Params;
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}
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/*
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* normalize process parameters (Offset-->Pointer)
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*
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* @implemented
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*/
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PRTL_USER_PROCESS_PARAMETERS NTAPI
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RtlNormalizeProcessParams(PRTL_USER_PROCESS_PARAMETERS Params)
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{
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if (Params && !(Params->Flags & RTL_USER_PROCESS_PARAMETERS_NORMALIZED))
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{
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NORMALIZE(Params->CurrentDirectory.DosPath.Buffer, Params);
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NORMALIZE(Params->DllPath.Buffer, Params);
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NORMALIZE(Params->ImagePathName.Buffer, Params);
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NORMALIZE(Params->CommandLine.Buffer, Params);
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NORMALIZE(Params->WindowTitle.Buffer, Params);
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NORMALIZE(Params->DesktopInfo.Buffer, Params);
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NORMALIZE(Params->ShellInfo.Buffer, Params);
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NORMALIZE(Params->RuntimeData.Buffer, Params);
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Params->Flags |= RTL_USER_PROCESS_PARAMETERS_NORMALIZED;
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}
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return Params;
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}
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/* EOF */
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