services/eventlog/logport.c

   1 /*
   2  *  ReactOS kernel
   3  *  Copyright (C) 2002 ReactOS Team
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19 /* $Id$
  20  *
  21  * COPYRIGHT:        See COPYING in the top level directory
  22  * PROJECT:          ReactOS kernel
  23  * FILE:             services/eventlog/logport.c
  24  * PURPOSE:          Event logger service
  25  * PROGRAMMER:       Eric Kohl
  26  */
  27
  28 /* INCLUDES *****************************************************************/
  29
  30 #define UNICODE
  31
  32 #define NTOS_MODE_USER
  33 #include <ntos.h>
  34 #include <napi/lpc.h>
  35 #include <windows.h>
  36
  37 #include "eventlog.h"
  38
  39 #define NDEBUG
  40 #include <debug.h>
  41
  42
  43 /* GLOBALS ******************************************************************/
  44
  45 HANDLE PortThreadHandle = NULL;
  46 HANDLE ConnectPortHandle = NULL;
  47 HANDLE MessagePortHandle = NULL;
  48
  49
  50 /* FUNCTIONS ****************************************************************/
  51
  52 static NTSTATUS
  53 InitLogPort(VOID)
  54 {
  55   OBJECT_ATTRIBUTES ObjectAttributes;
  56   UNICODE_STRING PortName;
  57   LPC_MESSAGE Message;
  58   NTSTATUS Status;
  59
  60   ConnectPortHandle = NULL;
  61   MessagePortHandle = NULL;
  62
  63   RtlInitUnicodeStringFromLiteral(&PortName,
  64                        L"\\ErrorLogPort");
  65   InitializeObjectAttributes(&ObjectAttributes,
  66                              &PortName,
  67                              0,
  68                              NULL,
  69                              NULL);
  70
  71   Status = NtCreatePort(&ConnectPortHandle,
  72                         &ObjectAttributes,
  73                         0,
  74                         0x100,
  75                         0x2000);
  76   if (!NT_SUCCESS(Status))
  77     goto ByeBye;
  78
  79   Message.DataSize = sizeof(LPC_MESSAGE);
  80   Message.MessageSize = 0;
  81
  82   Status = NtListenPort(ConnectPortHandle,
  83                         &Message);
  84   if (!NT_SUCCESS(Status))
  85     goto ByeBye;
  86
  87   Status = NtAcceptConnectPort(&MessagePortHandle,
  88                                0,
  89                                &Message,
  90                                1,
  91                                0,
  92                                0);
  93   if (!NT_SUCCESS(Status))
  94     goto ByeBye;
  95
  96   Status = NtCompleteConnectPort(MessagePortHandle);
  97   if (!NT_SUCCESS(Status))
  98     goto ByeBye;
  99
 100 ByeBye:
 101   if (ConnectPortHandle != NULL)
 102     NtClose(ConnectPortHandle);
 103
 104   if (MessagePortHandle != NULL)
 105     NtClose(MessagePortHandle);
 106
 107   return(Status);
 108 }
 109
 110
 111 static NTSTATUS
 112 ProcessPortMessage(VOID)
 113 {
 114   PLPC_MAX_MESSAGE Request;
 115   LPC_MESSAGE Reply;
 116   BOOL ReplyReady = FALSE;
 117   NTSTATUS Status;
 118
 119   Request = HeapAlloc(GetProcessHeap(),
 120                       HEAP_ZERO_MEMORY,
 121                       sizeof(LPC_MAX_MESSAGE));
 122   if (Request == NULL)
 123     return(STATUS_NO_MEMORY);
 124
 125   while (TRUE)
 126     {
 127       Status = NtReplyWaitReceivePort(MessagePortHandle,
 128                                       0,
 129                                       (ReplyReady)? &Reply : NULL,
 130                                       (PLPC_MESSAGE)Request);
 131       if (!NT_SUCCESS(Status))
 132         {
 133           HeapFree(GetProcessHeap(),
 134                    0,
 135                    Request);
 136           return(Status);
 137         }
 138
 139       ReplyReady = FALSE;
 140       if (Request->Header.MessageType == LPC_REQUEST)
 141         {
 142           DPRINT1("Received request\n");
 143
 144           ReplyReady = FALSE;
 145         }
 146       else if (Request->Header.MessageType == LPC_DATAGRAM)
 147         {
 148           DPRINT1("Received datagram\n");
 149         }
 150     }
 151 }
 152
 153
 154 static NTSTATUS STDCALL
 155 PortThreadRoutine(PVOID Param)
 156 {
 157   NTSTATUS Status = STATUS_SUCCESS;
 158
 159   Status = InitLogPort();
 160   if (!NT_SUCCESS(Status))
 161     return(Status);
 162
 163   while (!NT_SUCCESS(Status))
 164     {
 165       Status = ProcessPortMessage();
 166     }
 167
 168   return(Status);
 169 }
 170
 171
 172 BOOL
 173 StartPortThread(VOID)
 174 {
 175   DWORD ThreadId;
 176
 177   PortThreadHandle = CreateThread(NULL,
 178                                   0x1000,
 179                                   PortThreadRoutine,
 180                                   NULL,
 181                                   0,
 182                                   &ThreadId);
 183
 184   return((PortThreadHandle != NULL));
 185 }
 186
 187 /* EOF */