mirror of
https://github.com/reactos/reactos.git
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356 lines
12 KiB
C
356 lines
12 KiB
C
/*
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* PROJECT: ReactOS Session Manager
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* LICENSE: GPL v2 or later - See COPYING in the top level directory
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* FILE: base/system/smss/print.c
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* PURPOSE: \SmApiPort LPC port message management.
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* PROGRAMMERS: ReactOS Development Team
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*/
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/* INCLUDES ******************************************************************/
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#include "smss.h"
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#define NDEBUG
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#include <debug.h>
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/* GLOBAL VARIABLES *********************************************************/
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static HANDLE SmApiPort = INVALID_HANDLE_VALUE;
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/* SM API *******************************************************************/
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SMAPI(SmInvalid)
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{
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DPRINT("SM: %s called\n",__FUNCTION__);
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Request->SmHeader.Status = STATUS_NOT_IMPLEMENTED;
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return STATUS_SUCCESS;
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}
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/* SM API Table */
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typedef NTSTATUS (FASTCALL * SM_PORT_API)(PSM_PORT_MESSAGE);
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SM_PORT_API SmApi [] =
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{
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SmInvalid, /* unused */
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SmCompSes, /* smapicomp.c */
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SmInvalid, /* obsolete */
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SmInvalid, /* unknown */
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SmExecPgm, /* smapiexec.c */
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SmQryInfo /* smapyqry.c */
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};
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/* TODO: optimize this address computation (it should be done
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* with a macro) */
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PSM_CONNECT_DATA FASTCALL SmpGetConnectData (PSM_PORT_MESSAGE Request)
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{
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PPORT_MESSAGE PortMessage = (PPORT_MESSAGE) Request;
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return (PSM_CONNECT_DATA)(PortMessage + 1);
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}
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NTSTATUS NTAPI
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SmpHandleConnectionRequest (PSM_PORT_MESSAGE Request);
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/**********************************************************************
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* SmpCallbackServer/2
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*
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* DESCRIPTION
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* The SM calls back a previously connected subsystem process to
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* authorize it to bootstrap (initialize). The SM connects to a
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* named LPC port which name was sent in the connection data by
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* the candidate subsystem server process.
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*/
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static NTSTATUS
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SmpCallbackServer (PSM_PORT_MESSAGE Request,
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PSM_CLIENT_DATA ClientData)
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{
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NTSTATUS Status = STATUS_SUCCESS;
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PSM_CONNECT_DATA ConnectData = SmpGetConnectData (Request);
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UNICODE_STRING CallbackPortName;
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ULONG CallbackPortNameLength = SM_SB_NAME_MAX_LENGTH; /* TODO: compute length */
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SB_CONNECT_DATA SbConnectData;
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ULONG SbConnectDataLength = sizeof SbConnectData;
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SECURITY_QUALITY_OF_SERVICE SecurityQos;
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DPRINT("SM: %s called\n", __FUNCTION__);
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if ( ((USHORT)-1 == ConnectData->SubSystemId) ||
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(IMAGE_SUBSYSTEM_NATIVE == ConnectData->SubSystemId))
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{
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DPRINT("SM: %s: we do not need calling back SM!\n",
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__FUNCTION__);
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return STATUS_SUCCESS;
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}
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RtlCopyMemory (ClientData->SbApiPortName,
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ConnectData->SbName,
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CallbackPortNameLength);
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RtlInitUnicodeString (& CallbackPortName,
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ClientData->SbApiPortName);
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SecurityQos.Length = sizeof (SecurityQos);
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SecurityQos.ImpersonationLevel = SecurityIdentification;
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SecurityQos.ContextTrackingMode = SECURITY_DYNAMIC_TRACKING;
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SecurityQos.EffectiveOnly = TRUE;
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SbConnectData.SmApiMax = (sizeof SmApi / sizeof SmApi[0]);
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Status = NtConnectPort (& ClientData->SbApiPort,
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& CallbackPortName,
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&SecurityQos,
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NULL,
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NULL,
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NULL,
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& SbConnectData,
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& SbConnectDataLength);
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return Status;
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}
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/**********************************************************************
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* NAME
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* SmpApiConnectedThread/1
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*
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* DESCRIPTION
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* Entry point for the listener thread of LPC port "\SmApiPort".
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*/
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VOID NTAPI
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SmpApiConnectedThread(PVOID pConnectedPort)
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{
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NTSTATUS Status = STATUS_SUCCESS;
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PPORT_MESSAGE Reply = NULL;
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SM_PORT_MESSAGE Request;
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HANDLE ConnectedPort = * (PHANDLE) pConnectedPort;
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DPRINT("SM: %s called\n", __FUNCTION__);
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RtlZeroMemory(&Request, sizeof(SM_PORT_MESSAGE));
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while (TRUE)
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{
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DPRINT("SM: %s: waiting for message\n",__FUNCTION__);
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Status = NtReplyWaitReceivePort(ConnectedPort,
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NULL,
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Reply,
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(PPORT_MESSAGE) & Request);
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if (NT_SUCCESS(Status))
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{
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DPRINT("SM: %s: message received (type=%d)\n",
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__FUNCTION__,
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Request.Header.u2.s2.Type);
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switch (Request.Header.u2.s2.Type)
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{
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case LPC_CONNECTION_REQUEST:
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SmpHandleConnectionRequest (&Request);
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Reply = NULL;
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break;
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case LPC_DEBUG_EVENT:
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// DbgSsHandleKmApiMsg (&Request, 0);
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Reply = NULL;
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break;
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case LPC_PORT_CLOSED:
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Reply = NULL;
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continue;
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default:
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if ((Request.SmHeader.ApiIndex) &&
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(Request.SmHeader.ApiIndex < (sizeof SmApi / sizeof SmApi[0])))
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{
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Status = SmApi[Request.SmHeader.ApiIndex](&Request);
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Reply = (PPORT_MESSAGE) & Request;
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} else {
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Request.SmHeader.Status = STATUS_NOT_IMPLEMENTED;
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Reply = (PPORT_MESSAGE) & Request;
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}
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}
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} else {
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/* LPC failed */
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DPRINT1("SM: %s: NtReplyWaitReceivePort() failed (Status=0x%08lx)\n",
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__FUNCTION__, Status);
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break;
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}
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}
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NtClose (ConnectedPort);
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DPRINT("SM: %s done\n", __FUNCTION__);
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NtTerminateThread (NtCurrentThread(), Status);
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}
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/**********************************************************************
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* NAME
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* SmpHandleConnectionRequest/1
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*
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* ARGUMENTS
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* Request: LPC connection request message
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*
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* REMARKS
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* Quoted in http://support.microsoft.com/kb/258060/EN-US/
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*/
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NTSTATUS NTAPI
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SmpHandleConnectionRequest (PSM_PORT_MESSAGE Request)
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{
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PSM_CONNECT_DATA ConnectData = SmpGetConnectData (Request);
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NTSTATUS Status = STATUS_SUCCESS;
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BOOL Accept = FALSE;
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PSM_CLIENT_DATA ClientData = NULL;
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HANDLE hClientDataApiPort = (HANDLE) 0;
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PHANDLE ClientDataApiPort = & hClientDataApiPort;
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HANDLE hClientDataApiPortThread = (HANDLE) 0;
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PHANDLE ClientDataApiPortThread = & hClientDataApiPortThread;
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PVOID Context = NULL;
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DPRINT("SM: %s called:\n SubSystemID=%d\n SbName=\"%S\"\n",
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__FUNCTION__, ConnectData->SubSystemId, ConnectData->SbName);
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if(sizeof (SM_CONNECT_DATA) == Request->Header.u1.s1.DataLength)
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{
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if(IMAGE_SUBSYSTEM_UNKNOWN == ConnectData->SubSystemId)
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{
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/*
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* This is not a call to register an image set,
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* but a simple connection request from a process
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* that will use the SM API.
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*/
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DPRINT("SM: %s: simple request\n", __FUNCTION__);
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ClientDataApiPort = & hClientDataApiPort;
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ClientDataApiPortThread = & hClientDataApiPortThread;
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Accept = TRUE;
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} else {
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DPRINT("SM: %s: request to register an image set\n", __FUNCTION__);
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/*
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* Reject GUIs classes: only odd subsystem IDs are
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* allowed to register here (tty mode images).
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*/
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if(1 == (ConnectData->SubSystemId % 2))
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{
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DPRINT("SM: %s: id = %d\n", __FUNCTION__, ConnectData->SubSystemId);
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/*
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* SmBeginClientInitialization/2 will succeed only if there
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* is a candidate client ready.
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*/
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Status = SmBeginClientInitialization (Request, & ClientData);
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if(STATUS_SUCCESS == Status)
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{
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DPRINT("SM: %s: ClientData = %p\n",
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__FUNCTION__, ClientData);
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/*
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* OK: the client is an environment subsystem
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* willing to manage a free image type.
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*/
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ClientDataApiPort = & ClientData->ApiPort;
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ClientDataApiPortThread = & ClientData->ApiPortThread;
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/*
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* Call back the candidate environment subsystem
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* server (use the port name sent in in the
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* connection request message).
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*/
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Status = SmpCallbackServer (Request, ClientData);
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if(NT_SUCCESS(Status))
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{
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DPRINT("SM: %s: SmpCallbackServer OK\n",
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__FUNCTION__);
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Accept = TRUE;
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} else {
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DPRINT("SM: %s: SmpCallbackServer failed (Status=%08lx)\n",
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__FUNCTION__, Status);
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Status = SmDestroyClient (ConnectData->SubSystemId);
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}
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}
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}
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}
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}
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DPRINT("SM: %s: before NtAcceptConnectPort\n", __FUNCTION__);
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Status = NtAcceptConnectPort (ClientDataApiPort,
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Context,
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(PPORT_MESSAGE) Request,
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Accept,
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NULL,
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NULL);
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if(Accept)
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{
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if(!NT_SUCCESS(Status))
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{
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DPRINT1("SM: %s: NtAcceptConnectPort() failed (Status=0x%08lx)\n",
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__FUNCTION__, Status);
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return Status;
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} else {
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DPRINT("SM: %s: completing connection request\n", __FUNCTION__);
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Status = NtCompleteConnectPort (*ClientDataApiPort);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("SM: %s: NtCompleteConnectPort() failed (Status=0x%08lx)\n",
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__FUNCTION__, Status);
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return Status;
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}
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}
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Status = STATUS_SUCCESS;
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}
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DPRINT("SM: %s done\n", __FUNCTION__);
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return Status;
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}
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/* LPC PORT INITIALIZATION **************************************************/
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/**********************************************************************
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* NAME
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* SmCreateApiPort/0
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*
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* DECRIPTION
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*/
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NTSTATUS
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SmCreateApiPort(VOID)
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{
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OBJECT_ATTRIBUTES ObjectAttributes = {0};
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UNICODE_STRING UnicodeString = RTL_CONSTANT_STRING(SM_API_PORT_NAME);
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NTSTATUS Status = STATUS_SUCCESS;
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InitializeObjectAttributes(&ObjectAttributes,
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&UnicodeString,
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0,
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NULL,
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NULL);
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Status = NtCreatePort(&SmApiPort,
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&ObjectAttributes,
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sizeof(SM_CONNECT_DATA),
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sizeof(SM_PORT_MESSAGE),
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0);
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if (!NT_SUCCESS(Status))
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{
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return(Status);
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}
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/*
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* Create one thread for the named LPC
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* port \SmApiPort
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*/
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RtlCreateUserThread(NtCurrentProcess(),
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NULL,
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FALSE,
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0,
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0,
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0,
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(PTHREAD_START_ROUTINE)SmpApiConnectedThread,
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&SmApiPort,
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NULL,
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NULL);
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/*
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* On NT LPC, we need a second thread to handle incoming connections
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* generated by incoming requests, otherwise the thread handling
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* the request will be busy sending the LPC message, without any other
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* thread being busy to receive the LPC message.
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*/
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Status = RtlCreateUserThread(NtCurrentProcess(),
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NULL,
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FALSE,
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0,
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0,
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0,
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(PTHREAD_START_ROUTINE)SmpApiConnectedThread,
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&SmApiPort,
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NULL,
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NULL);
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return(Status);
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}
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/* EOF */
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