reactos/lib/smdll/connect.c

   1 /* $Id$
   2  *
   3  * COPYRIGHT:  See COPYING in the top level directory
   4  * PROJECT:    ReactOS system libraries
   5  * FILE:       reactos/lib/smdll/connect.c
   6  * PURPOSE:    Connect to the API LPC port exposed by the SM
   7  */
   8 #define NTOS_MODE_USER
   9 #include <ntos.h>
  10 #include <sm/api.h>
  11 #include <sm/helper.h>
  12 #include <pe.h>
  13
  14 #define NDEBUG
  15 #include <debug.h>
  16
  17 /**********************************************************************
  18  * NAME                                                 EXPORTED
  19  *      SmConnectApiPort/4
  20  *
  21  * DESCRIPTION
  22  *      Connect to SM API port and register a session "begin" port (Sb)
  23  *      or to issue API requests to SmApiPort.
  24  *
  25  * ARGUMENTS
  26  *      pSbApiPortName: name of the Sb port the calling subsystem
  27  *              server already created in the system name space;
  28  *      hSbApiPort: LPC port handle (checked, but not used);
  29  *      dwSubsystem: a valid IMAGE_SUBSYSTEM_xxx value;
  30  *      phSmApiPort: a pointer to a HANDLE, which will be
  31  *              filled with a valid client-side LPC comm port.
  32  *
  33  * RETURN VALUE
  34  *      If all three optional values are omitted, an LPC status.
  35  *      STATUS_INVALID_PARAMETER_MIX if PortName is defined and
  36  *      both hSbApiPort and dwSubsystem are 0.
  37  */
  38 NTSTATUS STDCALL
  39 SmConnectApiPort (IN      PUNICODE_STRING  pSbApiPortName  OPTIONAL,
  40                   IN      HANDLE           hSbApiPort      OPTIONAL,
  41                   IN      DWORD            dwSubsystem     OPTIONAL,
  42                   IN OUT  PHANDLE          phSmApiPort)
  43 {
  44   UNICODE_STRING              SmApiPortName;
  45   SECURITY_QUALITY_OF_SERVICE SecurityQos;
  46   NTSTATUS                    Status = STATUS_SUCCESS;
  47   SM_CONNECT_DATA             ConnectData = {0,{0}};
  48   ULONG                       ConnectDataLength = 0;
  49
  50   DPRINT("SMDLL: %s called\n", __FUNCTION__);
  51
  52   if (pSbApiPortName)
  53   {
  54     if (pSbApiPortName->Length > (sizeof pSbApiPortName->Buffer[0] * SM_SB_NAME_MAX_LENGTH))
  55     {
  56           return STATUS_INVALID_PARAMETER_1;
  57     }
  58     if (NULL == hSbApiPort || IMAGE_SUBSYSTEM_UNKNOWN == dwSubsystem)
  59     {
  60       return STATUS_INVALID_PARAMETER_MIX;
  61     }
  62     RtlZeroMemory (& ConnectData, sizeof ConnectData);
  63     ConnectData.Subsystem = dwSubsystem;
  64     if (pSbApiPortName->Length > 0)
  65     {
  66       RtlCopyMemory (& ConnectData.SbName,
  67                      pSbApiPortName->Buffer,
  68                      pSbApiPortName->Length);
  69     }
  70   }
  71   ConnectDataLength = sizeof ConnectData;
  72
  73   SecurityQos.Length              = sizeof (SecurityQos);
  74   SecurityQos.ImpersonationLevel  = SecurityIdentification;
  75   SecurityQos.ContextTrackingMode = TRUE;
  76   SecurityQos.EffectiveOnly       = TRUE;
  77
  78   RtlInitUnicodeString (& SmApiPortName, SM_API_PORT_NAME);
  79
  80   Status = NtConnectPort (
  81              phSmApiPort,
  82              & SmApiPortName,
  83              & SecurityQos,
  84              NULL,
  85              NULL,
  86              NULL,
  87              & ConnectData,
  88              & ConnectDataLength
  89              );
  90   if (NT_SUCCESS(Status))
  91   {
  92     return STATUS_SUCCESS;
  93   }
  94   DPRINT("SMDLL: %s failed (Status=0x%08lx)\n", __FUNCTION__, Status);
  95   return Status;
  96 }
  97
  98 /* EOF */