reactos/lib/ntdll/csr/lpc.c

   1 /* $Id: lpc.c,v 1.1 2001/06/17 20:05:09 ea Exp $
   2  *
   3  * COPYRIGHT:       See COPYING in the top level directory
   4  * PROJECT:         ReactOS kernel
   5  * FILE:            lib/ntdll/csr/lpc.c
   6  * PURPOSE:         CSRSS Client/Server LPC API
   7  *
   8  * REVISIONS:
   9  *      2001-06-16 (ea)
  10  *              File api.c renamed lpc.c. Process/thread code moved
  11  *              in thread.c. Check added on the LPC port.
  12  */
  13
  14 /* INCLUDES *****************************************************************/
  15
  16 #include <ddk/ntddk.h>
  17 #include <ntdll/csr.h>
  18 #include <string.h>
  19
  20 #include <csrss/csrss.h>
  21
  22 #define NDEBUG
  23 #include <ntdll/ntdll.h>
  24
  25 /* GLOBALS *******************************************************************/
  26
  27 HANDLE WindowsApiPort = INVALID_HANDLE_VALUE;
  28
  29 /* FUNCTIONS *****************************************************************/
  30
  31 /* Possible CsrClientCallServer (the NT one):
  32
  33 NTSTATUS STDCALL
  34 CsrClientCallServer(PCSRSS_XXX_REQUEST Request,
  35                     PCSRSS_XXX_REPLY Reply OPTIONAL,
  36                     ULONG CsrApiNumber,
  37                     ULONG MaxRequestReplyLength)
  38
  39 XXX_REQUEST and XXX_REPLY depend on the CsrApiNumber value and are not LPC
  40 objects (the LPC_REQUEST is built here instead).
  41 If Reply == NULL, use storage of Request to write the reply.
  42
  43 TO BE VERIFIED.
  44
  45 */
  46 NTSTATUS STDCALL
  47 CsrClientCallServer(PCSRSS_API_REQUEST Request,
  48                     PCSRSS_API_REPLY Reply OPTIONAL,
  49                     ULONG Length,
  50                     ULONG ReplyLength)
  51 {
  52    NTSTATUS Status;
  53
  54    if (INVALID_HANDLE_VALUE == WindowsApiPort)
  55    {
  56            DbgPrint ("NTDLL.%s: client not connected to CSRSS!\n", __FUNCTION__);
  57            return (STATUS_UNSUCCESSFUL);
  58    }
  59
  60 //   DbgPrint("CsrClientCallServer(Request %x, Reply %x, Length %d, "
  61 //          "ReplyLength %d)\n", Request, Reply, Length, ReplyLength);
  62
  63    Request->Header.DataSize = Length;
  64    Request->Header.MessageSize = sizeof(LPC_MESSAGE_HEADER) + Length;
  65
  66
  67    Status = NtRequestWaitReplyPort(WindowsApiPort,
  68                                    &Request->Header,
  69                                    (Reply?&Reply->Header:&Request->Header));
  70
  71 //   DbgPrint("Status %x\n", Status);
  72
  73    return(Status);
  74 }
  75
  76 NTSTATUS STDCALL
  77 CsrClientConnectToServer(VOID)
  78 {
  79    NTSTATUS Status;
  80    UNICODE_STRING PortName;
  81    ULONG ConnectInfoLength;
  82    CSRSS_API_REQUEST Request;
  83    CSRSS_API_REPLY Reply;
  84
  85    RtlInitUnicodeString(&PortName, L"\\Windows\\ApiPort");
  86    ConnectInfoLength = 0;
  87    Status = NtConnectPort(&WindowsApiPort,
  88                           &PortName,
  89                           NULL,
  90                           NULL,
  91                           NULL,
  92                           NULL,
  93                           NULL,
  94                           &ConnectInfoLength);
  95    if (!NT_SUCCESS(Status))
  96      {
  97         return(Status);
  98      }
  99
 100    Request.Type = CSRSS_CONNECT_PROCESS;
 101    Status = CsrClientCallServer(&Request,
 102                                 &Reply,
 103                                 sizeof(CSRSS_API_REQUEST),
 104                                 sizeof(CSRSS_API_REPLY));
 105    if (!NT_SUCCESS(Status))
 106      {
 107         return(Status);
 108      }
 109    if (!NT_SUCCESS(Reply.Status))
 110      {
 111         return(Reply.Status);
 112      }
 113    return(STATUS_SUCCESS);
 114 }
 115
 116 /* EOF */