+++ /dev/null
-/*
- * COPYRIGHT: See COPYING in the top level directory
- * PROJECT: ReactOS CSR Sub System
- * FILE: subsys/csr/csrsrv/server.c
- * PURPOSE: CSR Server DLL Server Functions
- * PROGRAMMERS: Alex Ionescu (alex@relsoft.net)
- */
-
-/* INCLUDES ******************************************************************/
-#include "srv.h"
-
-#define NDEBUG
-#include <debug.h>
-
-/* DATA **********************************************************************/
-
-PCSR_API_ROUTINE CsrServerApiDispatchTable[5] =
-{
- CsrSrvClientConnect,
- CsrSrvUnusedFunction,
- CsrSrvUnusedFunction,
- CsrSrvIdentifyAlertableThread,
- CsrSrvSetPriorityClass
-};
-
-BOOLEAN CsrServerApiServerValidTable[5] =
-{
- TRUE,
- FALSE,
- TRUE,
- TRUE,
- TRUE
-};
-
-PCHAR CsrServerApiNameTable[5] =
-{
- "ClientConnect",
- "ThreadConnect",
- "ProfileControl",
- "IdentifyAlertableThread",
- "SetPriorityClass"
-};
-
-PCSR_SERVER_DLL CsrLoadedServerDll[CSR_SERVER_DLL_MAX];
-PVOID CsrSrvSharedSectionHeap;
-PVOID CsrSrvSharedSectionBase;
-PVOID *CsrSrvSharedStaticServerData;
-ULONG CsrSrvSharedSectionSize;
-HANDLE CsrSrvSharedSection;
-
-/* PRIVATE FUNCTIONS**********************************************************/
-
-/*++
- * @name CsrLoadServerDll
- * @implemented NT4
- *
- * The CsrLoadServerDll routine loads a CSR Server DLL and calls its entrypoint
- *
- * @param DllString
- * Pointer to the CSR Server DLL to load and call.
- *
- * @param EntryPoint
- * Pointer to the name of the server's initialization function. If
- * this parameter is NULL, the default ServerDllInitialize will be
- * assumed.
- *
- * @return STATUS_SUCCESS in case of success, STATUS_UNSUCCESSFUL
- * othwerwise.
- *
- * @remarks None.
- *
- *--*/
-NTSTATUS
-NTAPI
-CsrLoadServerDll(IN PCHAR DllString,
- IN PCHAR EntryPoint OPTIONAL,
- IN ULONG ServerId)
-{
- NTSTATUS Status;
- ANSI_STRING DllName;
- UNICODE_STRING TempString;
- HANDLE hServerDll = NULL;
- ULONG Size;
- PCSR_SERVER_DLL ServerDll;
- STRING EntryPointString;
- PCSR_SERVER_DLL_INIT_CALLBACK ServerDllInitProcedure;
-
- /* Check if it's beyond the maximum we support */
- if (ServerId >= CSR_SERVER_DLL_MAX) return(STATUS_TOO_MANY_NAMES);
-
- /* Check if it's already been loaded */
- if (CsrLoadedServerDll[ServerId]) return(STATUS_INVALID_PARAMETER);
-
- /* Convert the name to Unicode */
- RtlInitAnsiString(&DllName, DllString);
- Status = RtlAnsiStringToUnicodeString(&TempString, &DllName, TRUE);
-
- /* If we are loading ourselves, don't actually load us */
- if (ServerId != CSR_SRV_SERVER)
- {
- /* Load the DLL */
- Status = LdrLoadDll(NULL, 0, &TempString, &hServerDll);
-
- /* Get rid of the string */
- RtlFreeUnicodeString(&TempString);
- if (!NT_SUCCESS(Status))
- {
- return Status;
- }
- }
-
- /* Allocate a CSR DLL Object */
- Size = sizeof(CSR_SERVER_DLL) + DllName.MaximumLength;
- if (!(ServerDll = RtlAllocateHeap(CsrHeap, HEAP_ZERO_MEMORY, Size)))
- {
- if (hServerDll) LdrUnloadDll(hServerDll);
- return STATUS_NO_MEMORY;
- }
-
- /* Set up the Object */
- ServerDll->Length = Size;
- ServerDll->SharedSection = CsrSrvSharedSectionHeap;
- ServerDll->Event = CsrInitializationEvent;
- ServerDll->Name.Length = DllName.Length;
- ServerDll->Name.MaximumLength = DllName.MaximumLength;
- ServerDll->Name.Buffer = (PCHAR)(ServerDll + 1);
- if (DllName.Length)
- {
- strncpy(ServerDll->Name.Buffer, DllName.Buffer, DllName.Length);
- }
- ServerDll->ServerId = ServerId;
- ServerDll->ServerHandle = hServerDll;
-
- /* Now get the entrypoint */
- if (hServerDll)
- {
- /* Initialize a string for the entrypoint, or use the default */
- RtlInitAnsiString(&EntryPointString,
- !(EntryPoint) ? "ServerDllInitialization" :
- EntryPoint);
-
- /* Get a pointer to it */
- Status = LdrGetProcedureAddress(hServerDll,
- &EntryPointString,
- 0,
- (PVOID)&ServerDllInitProcedure);
- }
- else
- {
- /* No handle, so we are loading ourselves */
- ServerDllInitProcedure = CsrServerDllInitialization;
- Status = STATUS_SUCCESS;
- }
-
- /* Check if we got the pointer, and call it */
- if (NT_SUCCESS(Status))
- {
- /* Get the result from the Server DLL */
- Status = (*ServerDllInitProcedure)(ServerDll);
-
- /* Check for Success */
- if (NT_SUCCESS(Status))
- {
- /*
- * Add this Server's Per-Process Data Size to the total that each
- * process will need.
- */
- CsrTotalPerProcessDataLength += ServerDll->SizeOfProcessData;
-
- /* Save the pointer in our list */
- CsrLoadedServerDll[ServerDll->ServerId] = ServerDll;
-
- /* Does it use our generic heap? */
- if (ServerDll->SharedSection != CsrSrvSharedSectionHeap)
- {
- /* No, save the pointer to its shared section in our list */
- CsrSrvSharedStaticServerData[ServerDll->ServerId] = ServerDll->SharedSection;
- }
- }
- else
- {
- /* Use shared failure code */
- goto LoadFailed;
- }
- }
- else
- {
-LoadFailed:
- /* Server Init failed, unload it */
- if (hServerDll) LdrUnloadDll(hServerDll);
-
- /* Delete the Object */
- RtlFreeHeap(CsrHeap, 0, ServerDll);
- }
-
- /* Return to caller */
- return Status;
-}
-
-/*++
- * @name CsrServerDllInitialization
- * @implemented NT4
- *
- * The CsrServerDllInitialization is the initialization routine for
- * the this Server DLL.
- *
- * @param LoadedServerDll
- * Pointer to the CSR Server DLL structure representing this Server DLL.
- *
- * @return STATUS_SUCCESS.
- *
- * @remarks None.
- *
- *--*/
-NTSTATUS
-NTAPI
-CsrServerDllInitialization(IN PCSR_SERVER_DLL LoadedServerDll)
-{
- /* Setup the DLL Object */
- LoadedServerDll->ApiBase = 0;
- LoadedServerDll->HighestApiSupported = 5;
- LoadedServerDll->DispatchTable = CsrServerApiDispatchTable;
- LoadedServerDll->ValidTable = CsrServerApiServerValidTable;
- LoadedServerDll->NameTable = CsrServerApiNameTable;
- LoadedServerDll->SizeOfProcessData = 0;
- LoadedServerDll->ConnectCallback = NULL;
- LoadedServerDll->DisconnectCallback = NULL;
-
- /* All done */
- return STATUS_SUCCESS;
-}
-
-/*++
- * @name CsrSrvClientConnect
- *
- * The CsrSrvClientConnect CSR API handles a new connection to a server DLL.
- *
- * @param ApiMessage
- * Pointer to the CSR API Message for this request.
- *
- * @param Reply
- * Optional reply to this request.
- *
- * @return STATUS_SUCCESS in case of success, STATUS_INVALID_PARAMETER
- * or STATUS_TOO_MANY_NAMES in case of failure.
- *
- * @remarks None.
- *
- *--*/
-NTSTATUS
-NTAPI
-CsrSrvClientConnect(IN OUT PCSR_API_MESSAGE ApiMessage,
- IN OUT PULONG Reply OPTIONAL)
-{
- NTSTATUS Status;
- PCSR_CLIENT_CONNECT ClientConnect;
- PCSR_SERVER_DLL ServerDll;
-
- /* Load the Message, set default reply */
- ClientConnect = (PCSR_CLIENT_CONNECT)&ApiMessage->CsrClientConnect;
- *Reply = 0;
-
- /* Validate the ServerID */
- if (ClientConnect->ServerId >= CSR_SERVER_DLL_MAX)
- {
- return STATUS_TOO_MANY_NAMES;
- }
- else if (!(CsrLoadedServerDll[ClientConnect->ServerId]))
- {
- return STATUS_INVALID_PARAMETER;
- }
-
- /* Validate the Message Buffer */
- if (!(CsrValidateMessageBuffer(ApiMessage,
- ClientConnect->ConnectionInfo,
- ClientConnect->ConnectionInfoSize,
- 1)))
- {
- /* Fail due to buffer overflow or other invalid buffer */
- return STATUS_INVALID_PARAMETER;
- }
-
- /* Load the Server DLL */
- ServerDll = CsrLoadedServerDll[ClientConnect->ServerId];
-
- /* Check if it has a Connect Callback */
- if (ServerDll->ConnectCallback)
- {
- /* Call the callback */
- Status = (ServerDll->ConnectCallback)(((PCSR_THREAD)NtCurrentTeb()->CsrClientThread)->Process,
- ClientConnect->ConnectionInfo,
- &ClientConnect->ConnectionInfoSize);
- }
- else
- {
- /* Assume success */
- Status = STATUS_SUCCESS;
- }
-
- /* Return status */
- return Status;
-}
-
-/*++
- * @name CsrSrvCreateSharedSection
- *
- * The CsrSrvCreateSharedSection creates the Shared Section that all CSR Server
- * DLLs and Clients can use to share data.
- *
- * @param ParameterValue
- * Specially formatted string from our registry command-line which
- * specifies various arguments for the shared section.
- *
- * @return STATUS_SUCCESS in case of success, STATUS_UNSUCCESSFUL
- * othwerwise.
- *
- * @remarks None.
- *
- *--*/
-NTSTATUS
-NTAPI
-CsrSrvCreateSharedSection(IN PCHAR ParameterValue)
-{
- PCHAR SizeValue = ParameterValue;
- ULONG Size;
- NTSTATUS Status;
- LARGE_INTEGER SectionSize;
- ULONG ViewSize = 0;
- PPEB Peb = NtCurrentPeb();
-
- /* Find the first comma, and null terminate */
- while (*SizeValue)
- {
- if (*SizeValue == ',')
- {
- *SizeValue++ = '\0';
- break;
- }
- else
- {
- SizeValue++;
- }
- }
-
- /* Make sure it's valid */
- if (!*SizeValue) return(STATUS_INVALID_PARAMETER);
-
- /* Convert it to an integer */
- Status = RtlCharToInteger(SizeValue,
- 0,
- &Size);
- if (!NT_SUCCESS(Status)) return Status;
-
- /* Multiply by 1024 entries and round to page size */
- CsrSrvSharedSectionSize = ROUND_UP(Size * 1024, CsrNtSysInfo.PageSize);
-
- /* Create the Secion */
- SectionSize.LowPart = CsrSrvSharedSectionSize;
- SectionSize.HighPart = 0;
- Status = NtCreateSection(&CsrSrvSharedSection,
- SECTION_ALL_ACCESS,
- NULL,
- &SectionSize,
- PAGE_EXECUTE_READWRITE,
- SEC_BASED | SEC_RESERVE,
- NULL);
- if (!NT_SUCCESS(Status)) return Status;
-
- /* Map the section */
- Status = NtMapViewOfSection(CsrSrvSharedSection,
- NtCurrentProcess(),
- &CsrSrvSharedSectionBase,
- 0,
- 0,
- NULL,
- &ViewSize,
- ViewUnmap,
- MEM_TOP_DOWN,
- PAGE_EXECUTE_READWRITE);
- if(!NT_SUCCESS(Status))
- {
- /* Fail */
- NtClose(CsrSrvSharedSection);
- return(Status);
- }
-
- /* FIXME: Write the value to registry */
-
- /* The Heap is the same place as the Base */
- CsrSrvSharedSectionHeap = CsrSrvSharedSectionBase;
-
- /* Create the heap */
- if (!(RtlCreateHeap(HEAP_ZERO_MEMORY,
- CsrSrvSharedSectionHeap,
- CsrSrvSharedSectionSize,
- PAGE_SIZE,
- 0,
- 0)))
- {
- /* Failure, unmap section and return */
- NtUnmapViewOfSection(NtCurrentProcess(),
- CsrSrvSharedSectionBase);
- NtClose(CsrSrvSharedSection);
- return STATUS_NO_MEMORY;
- }
-
- /* Now allocate space from the heap for the Shared Data */
- CsrSrvSharedStaticServerData = RtlAllocateHeap(CsrSrvSharedSectionHeap,
- 0,
- CSR_SERVER_DLL_MAX *
- sizeof(PVOID));
-
- /* Write the values to the PEB */
- Peb->ReadOnlySharedMemoryBase = CsrSrvSharedSectionBase;
- Peb->ReadOnlySharedMemoryHeap = CsrSrvSharedSectionHeap;
- Peb->ReadOnlyStaticServerData = CsrSrvSharedStaticServerData;
-
- /* Return */
- return STATUS_SUCCESS;
-}
-
-/*++
- * @name CsrSrvAttachSharedSection
- *
- * The CsrSrvAttachSharedSection maps the CSR Shared Section into a new
- * CSR Process' address space, and returns the pointers to the section
- * through the Connection Info structure.
- *
- * @param CsrProcess
- * Pointer to the CSR Process that is attempting a connection.
- *
- * @param ConnectInfo
- * Pointer to the CSR Connection Info structure for the incoming
- * connection.
- *
- * @return STATUS_SUCCESS in case of success, STATUS_UNSUCCESSFUL
- * othwerwise.
- *
- * @remarks None.
- *
- *--*/
-NTSTATUS
-NTAPI
-CsrSrvAttachSharedSection(IN PCSR_PROCESS CsrProcess OPTIONAL,
- OUT PCSR_CONNECTION_INFO ConnectInfo)
-{
- NTSTATUS Status;
- ULONG ViewSize = 0;
-
- /* Check if we have a process */
- if (CsrProcess)
- {
- /* Map the sectio into this process */
- Status = NtMapViewOfSection(CsrSrvSharedSection,
- CsrProcess->ProcessHandle,
- &CsrSrvSharedSectionBase,
- 0,
- 0,
- NULL,
- &ViewSize,
- ViewUnmap,
- SEC_NO_CHANGE,
- PAGE_EXECUTE_READ);
- if (!NT_SUCCESS(Status)) return Status;
- }
-
- /* Write the values in the Connection Info structure */
- ConnectInfo->SharedSectionBase = CsrSrvSharedSectionBase;
- ConnectInfo->SharedSectionHeap = CsrSrvSharedSectionHeap;
- ConnectInfo->SharedSectionData = CsrSrvSharedStaticServerData;
-
- /* Return success */
- return STATUS_SUCCESS;
-}
-
-/*++
- * @name CsrSrvIdentifyAlertableThread
- * @implemented NT4
- *
- * The CsrSrvIdentifyAlertableThread CSR API marks a CSR Thread as alertable.
- *
- * @param ApiMessage
- * Pointer to the CSR API Message for this request.
- *
- * @param Reply
- * Pointer to an optional reply to this request.
- *
- * @return STATUS_SUCCESS.
- *
- * @remarks None.
- *
- *--*/
-NTSTATUS
-NTAPI
-CsrSrvIdentifyAlertableThread(IN OUT PCSR_API_MESSAGE ApiMessage,
- IN OUT PULONG Reply)
-{
- PCSR_THREAD CsrThread = NtCurrentTeb()->CsrClientThread;
-
- /* Set the alertable flag */
- CsrThread->Flags |= CsrThreadAltertable;
-
- /* Return success */
- return STATUS_SUCCESS;
-}
-
-/*++
- * @name CsrSrvSetPriorityClass
- * @implemented NT4
- *
- * The CsrSrvSetPriorityClass CSR API is deprecated.
- *
- * @param ApiMessage
- * Pointer to the CSR API Message for this request.
- *
- * @param Reply
- * Pointer to an optional reply to this request.
- *
- * @return STATUS_SUCCESS.
- *
- * @remarks None.
- *
- *--*/
-NTSTATUS
-NTAPI
-CsrSrvSetPriorityClass(IN OUT PCSR_API_MESSAGE ApiMessage,
- IN OUT PULONG Reply)
-{
- /* Deprecated */
- return STATUS_SUCCESS;
-}
-
-/*++
- * @name CsrSrvUnusedFunction
- * @implemented NT4
- *
- * The CsrSrvUnusedFunction CSR API is a stub for deprecated APIs.
- *
- * The CsrSrvSetPriorityClass CSR API is deprecated.
- *
- * @param ApiMessage
- * Pointer to the CSR API Message for this request.
- *
- * @param Reply
- * Pointer to an optional reply to this request.
- *
- * @return STATUS_INVALID_PARAMETER.
- *
- * @remarks CsrSrvSetPriorityClass does not use this stub because it must
- * return success.
- *
- *--*/
-NTSTATUS
-NTAPI
-CsrSrvUnusedFunction(IN OUT PCSR_API_MESSAGE ApiMessage,
- IN OUT PULONG Reply)
-{
- /* Deprecated */
- return STATUS_INVALID_PARAMETER;
-}
-
-/* PUBLIC FUNCTIONS***********************************************************/
-
-/*++
- * @name CsrSetCallingSpooler
- * @implemented NT4
- *
- * the CsrSetCallingSpooler routine is deprecated.
- *
- * @param Reserved
- * Deprecated
- *
- * @return None.
- *
- * @remarks This routine was used in archaic versions of NT for Printer Drivers.
- *
- *--*/
-VOID
-NTAPI
-CsrSetCallingSpooler(ULONG Reserved)
-{
- /* Deprecated */
- return;
-}
-
-/*++
- * @name CsrUnhandledExceptionFilter
- * @implemented NT5
- *
- * The CsrUnhandledExceptionFilter routine handles all exceptions
- * within SEH-protected blocks.
- *
- * @param ExceptionPointers
- * System-defined Argument.
- *
- * @return EXCEPTION_EXECUTE_HANDLER.
- *
- * @remarks None.
- *
- *--*/
-_SEH_FILTER(CsrUnhandledExceptionFilter)
-{
- struct _EXCEPTION_POINTERS *ExceptionInfo = _SEH_GetExceptionPointers();
- SYSTEM_KERNEL_DEBUGGER_INFORMATION DebuggerInfo;
- EXCEPTION_DISPOSITION Result = EXCEPTION_EXECUTE_HANDLER;
- BOOLEAN OldValue;
- NTSTATUS Status;
- UNICODE_STRING ErrorSource;
- ULONG_PTR ErrorParameters[4];
- ULONG Response;
-
- /* Check if a debugger is installed */
- Status = NtQuerySystemInformation(SystemKernelDebuggerInformation,
- &DebuggerInfo,
- sizeof(DebuggerInfo),
- NULL);
-
- /* Check if this is Session 0, and the Debugger is Enabled */
- if ((NtCurrentPeb()->SessionId) && (NT_SUCCESS(Status)) &&
- (DebuggerInfo.KernelDebuggerEnabled))
- {
- /* Call the Unhandled Exception Filter */
- if ((Result = RtlUnhandledExceptionFilter(ExceptionInfo)) !=
- EXCEPTION_CONTINUE_EXECUTION)
- {
- /* We're going to raise an error. Get Shutdown Privilege first */
- Status = RtlAdjustPrivilege(SE_SHUTDOWN_PRIVILEGE,
- TRUE,
- TRUE,
- &OldValue);
-
- /* Use the Process token if that failed */
- if (Status == STATUS_NO_TOKEN)
- {
- Status = RtlAdjustPrivilege(SE_SHUTDOWN_PRIVILEGE,
- TRUE,
- FALSE,
- &OldValue);
- }
-
- /* Initialize our Name String */
- RtlInitUnicodeString(&ErrorSource, L"Windows SubSystem");
-
- /* Set the parameters */
- ErrorParameters[0] = PtrToUlong(&ErrorSource);
- ErrorParameters[1] = ExceptionInfo->ExceptionRecord->ExceptionCode;
- ErrorParameters[2] = PtrToUlong(ExceptionInfo->ExceptionRecord->ExceptionAddress);
- ErrorParameters[3] = PtrToUlong(ExceptionInfo->ContextRecord);
-
- /* Bugcheck */
- Status = NtRaiseHardError(STATUS_SYSTEM_PROCESS_TERMINATED,
- 4,
- 1,
- ErrorParameters,
- OptionShutdownSystem,
- &Response);
- }
-
- /* Just terminate us */
- NtTerminateProcess(NtCurrentProcess(),
- ExceptionInfo->ExceptionRecord->ExceptionCode);
- }
-
- return Result;
-}
-
-/* EOF */
projects / reactos.git / blobdiff