subsystems/win/basesrv/vdm.c

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS Base API Server DLL
   4  * FILE:            subsystems/win/basesrv/vdm.c
   5  * PURPOSE:         Virtual DOS Machines (VDM) Support
   6  * PROGRAMMERS:     Hermes Belusca-Maito (hermes.belusca@sfr.fr)
   7  *                  Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
   8  */
   9
  10 /* INCLUDES *******************************************************************/
  11
  12 #include "basesrv.h"
  13 #include "vdm.h"
  14
  15 #define NDEBUG
  16 #include <debug.h>
  17
  18 /* GLOBALS ********************************************************************/
  19
  20 BOOLEAN FirstVDM = TRUE;
  21 LIST_ENTRY VDMConsoleListHead;
  22 RTL_CRITICAL_SECTION DosCriticalSection;
  23
  24 /* FUNCTIONS ******************************************************************/
  25
  26 NTSTATUS NTAPI BaseSrvGetConsoleRecord(HANDLE ConsoleHandle, PVDM_CONSOLE_RECORD *Record)
  27 {
  28     PLIST_ENTRY i;
  29     PVDM_CONSOLE_RECORD CurrentRecord = NULL;
  30
  31     /* Search for a record that has the same console handle */
  32     for (i = VDMConsoleListHead.Flink; i != &VDMConsoleListHead; i = i->Flink)
  33     {
  34         CurrentRecord = CONTAINING_RECORD(i, VDM_CONSOLE_RECORD, Entry);
  35         if (CurrentRecord->ConsoleHandle == ConsoleHandle) break;
  36     }
  37
  38     *Record = CurrentRecord;
  39     return CurrentRecord ? STATUS_SUCCESS : STATUS_NOT_FOUND;
  40 }
  41
  42 VOID NTAPI BaseInitializeVDM(VOID)
  43 {
  44     /* Initialize the list head */
  45     InitializeListHead(&VDMConsoleListHead);
  46
  47     /* Initialize the critical section */
  48     RtlInitializeCriticalSection(&DosCriticalSection);
  49 }
  50
  51 /* PUBLIC SERVER APIS *********************************************************/
  52
  53 CSR_API(BaseSrvCheckVDM)
  54 {
  55     PBASE_CHECK_VDM CheckVdmRequest = &((PBASE_API_MESSAGE)ApiMessage)->Data.CheckVDMRequest;
  56
  57     /* Validate the message buffers */
  58     if (!CsrValidateMessageBuffer(ApiMessage,
  59                                   (PVOID*)&CheckVdmRequest->CmdLine,
  60                                   CheckVdmRequest->CmdLen,
  61                                   sizeof(*CheckVdmRequest->CmdLine))
  62         || !CsrValidateMessageBuffer(ApiMessage,
  63                                      (PVOID*)&CheckVdmRequest->AppName,
  64                                      CheckVdmRequest->AppLen,
  65                                      sizeof(*CheckVdmRequest->AppName))
  66         || !CsrValidateMessageBuffer(ApiMessage,
  67                                      (PVOID*)&CheckVdmRequest->PifFile,
  68                                      CheckVdmRequest->PifLen,
  69                                      sizeof(*CheckVdmRequest->PifFile))
  70         || !CsrValidateMessageBuffer(ApiMessage,
  71                                      (PVOID*)&CheckVdmRequest->CurDirectory,
  72                                      CheckVdmRequest->CurDirectoryLen,
  73                                      sizeof(*CheckVdmRequest->CurDirectory))
  74         || !CsrValidateMessageBuffer(ApiMessage,
  75                                      (PVOID*)&CheckVdmRequest->Desktop,
  76                                      CheckVdmRequest->DesktopLen,
  77                                      sizeof(*CheckVdmRequest->Desktop))
  78         || !CsrValidateMessageBuffer(ApiMessage,
  79                                      (PVOID*)&CheckVdmRequest->Title,
  80                                      CheckVdmRequest->TitleLen,
  81                                      sizeof(*CheckVdmRequest->Title))
  82         || !CsrValidateMessageBuffer(ApiMessage,
  83                                      (PVOID*)&CheckVdmRequest->Reserved,
  84                                      CheckVdmRequest->ReservedLen,
  85                                      sizeof(*CheckVdmRequest->Reserved)))
  86     {
  87         return STATUS_INVALID_PARAMETER;
  88     }
  89
  90     // TODO: NOT IMPLEMENTED
  91     return STATUS_NOT_IMPLEMENTED;
  92 }
  93
  94 CSR_API(BaseSrvUpdateVDMEntry)
  95 {
  96     DPRINT1("%s not yet implemented\n", __FUNCTION__);
  97     return STATUS_NOT_IMPLEMENTED;
  98 }
  99
 100 CSR_API(BaseSrvGetNextVDMCommand)
 101 {
 102     DPRINT1("%s not yet implemented\n", __FUNCTION__);
 103     return STATUS_NOT_IMPLEMENTED;
 104 }
 105
 106 CSR_API(BaseSrvExitVDM)
 107 {
 108     DPRINT1("%s not yet implemented\n", __FUNCTION__);
 109     return STATUS_NOT_IMPLEMENTED;
 110 }
 111
 112 CSR_API(BaseSrvIsFirstVDM)
 113 {
 114     PBASE_IS_FIRST_VDM IsFirstVDMRequest = &((PBASE_API_MESSAGE)ApiMessage)->Data.IsFirstVDMRequest;
 115
 116     /* Return the result */
 117     IsFirstVDMRequest->FirstVDM = FirstVDM;
 118
 119     /* Clear the first VDM flag */
 120     FirstVDM = FALSE;
 121
 122     return STATUS_SUCCESS;
 123 }
 124
 125 CSR_API(BaseSrvGetVDMExitCode)
 126 {
 127     DPRINT1("%s not yet implemented\n", __FUNCTION__);
 128     return STATUS_NOT_IMPLEMENTED;
 129 }
 130
 131 CSR_API(BaseSrvSetReenterCount)
 132 {
 133     DPRINT1("%s not yet implemented\n", __FUNCTION__);
 134     return STATUS_NOT_IMPLEMENTED;
 135 }
 136
 137 CSR_API(BaseSrvSetVDMCurDirs)
 138 {
 139     NTSTATUS Status;
 140     PBASE_GETSET_VDM_CURDIRS VDMCurrentDirsRequest = &((PBASE_API_MESSAGE)ApiMessage)->Data.VDMCurrentDirsRequest;
 141     PVDM_CONSOLE_RECORD ConsoleRecord;
 142     PCHAR Buffer = NULL;
 143
 144     /* Validate the input buffer */
 145     if (!CsrValidateMessageBuffer(ApiMessage,
 146                                   (PVOID*)&VDMCurrentDirsRequest->lpszzCurDirs,
 147                                   VDMCurrentDirsRequest->cchCurDirs,
 148                                   sizeof(*VDMCurrentDirsRequest->lpszzCurDirs)))
 149     {
 150         return STATUS_INVALID_PARAMETER;
 151     }
 152
 153     /* Enter the critical section */
 154     RtlEnterCriticalSection(&DosCriticalSection);
 155
 156     /* Find the console record */
 157     Status = BaseSrvGetConsoleRecord(VDMCurrentDirsRequest->ConsoleHandle, &ConsoleRecord);
 158     if (!NT_SUCCESS(Status)) goto Cleanup;
 159
 160     if (ConsoleRecord->CurrentDirs == NULL)
 161     {
 162         /* Allocate memory for the current directory information */
 163         Buffer = RtlAllocateHeap(BaseSrvHeap,
 164                                  HEAP_ZERO_MEMORY,
 165                                  VDMCurrentDirsRequest->cchCurDirs);
 166     }
 167     else
 168     {
 169         /* Resize the amount of allocated memory */
 170         Buffer = RtlReAllocateHeap(BaseSrvHeap,
 171                                    HEAP_ZERO_MEMORY,
 172                                    ConsoleRecord->CurrentDirs,
 173                                    VDMCurrentDirsRequest->cchCurDirs);
 174     }
 175
 176     if (Buffer == NULL)
 177     {
 178         /* Allocation failed */
 179         Status = STATUS_NO_MEMORY;
 180         goto Cleanup;
 181     }
 182
 183     /* Update the console record */
 184     ConsoleRecord->CurrentDirs = Buffer;
 185     ConsoleRecord->CurDirsLength = VDMCurrentDirsRequest->cchCurDirs;
 186
 187     /* Copy the data */
 188     RtlMoveMemory(ConsoleRecord->CurrentDirs,
 189                   VDMCurrentDirsRequest->lpszzCurDirs,
 190                   VDMCurrentDirsRequest->cchCurDirs);
 191
 192 Cleanup:
 193     /* Leave the critical section */
 194     RtlLeaveCriticalSection(&DosCriticalSection);
 195
 196     return Status;
 197 }
 198
 199 CSR_API(BaseSrvGetVDMCurDirs)
 200 {
 201     NTSTATUS Status;
 202     PBASE_GETSET_VDM_CURDIRS VDMCurrentDirsRequest = &((PBASE_API_MESSAGE)ApiMessage)->Data.VDMCurrentDirsRequest;
 203     PVDM_CONSOLE_RECORD ConsoleRecord;
 204
 205     /* Validate the output buffer */
 206     if (!CsrValidateMessageBuffer(ApiMessage,
 207                                   (PVOID*)&VDMCurrentDirsRequest->lpszzCurDirs,
 208                                   VDMCurrentDirsRequest->cchCurDirs,
 209                                   sizeof(*VDMCurrentDirsRequest->lpszzCurDirs)))
 210     {
 211         return STATUS_INVALID_PARAMETER;
 212     }
 213
 214     /* Enter the critical section */
 215     RtlEnterCriticalSection(&DosCriticalSection);
 216
 217     /* Find the console record */
 218     Status = BaseSrvGetConsoleRecord(VDMCurrentDirsRequest->ConsoleHandle, &ConsoleRecord);
 219     if (!NT_SUCCESS(Status)) goto Cleanup;
 220
 221     /* Check if the buffer is large enough */
 222     if (VDMCurrentDirsRequest->cchCurDirs < ConsoleRecord->CurDirsLength)
 223     {
 224         Status = STATUS_BUFFER_TOO_SMALL;
 225         goto Cleanup;
 226     }
 227
 228     /* Copy the data */
 229     RtlMoveMemory(VDMCurrentDirsRequest->lpszzCurDirs,
 230                   ConsoleRecord->CurrentDirs,
 231                   ConsoleRecord->CurDirsLength);
 232
 233 Cleanup:
 234     /* Leave the critical section */
 235     RtlLeaveCriticalSection(&DosCriticalSection);
 236
 237     return Status;
 238 }
 239
 240 CSR_API(BaseSrvBatNotification)
 241 {
 242     DPRINT1("%s not yet implemented\n", __FUNCTION__);
 243     return STATUS_NOT_IMPLEMENTED;
 244 }
 245
 246 CSR_API(BaseSrvRegisterWowExec)
 247 {
 248     DPRINT1("%s not yet implemented\n", __FUNCTION__);
 249     return STATUS_NOT_IMPLEMENTED;
 250 }
 251
 252 CSR_API(BaseSrvRefreshIniFileMapping)
 253 {
 254     DPRINT1("%s not yet implemented\n", __FUNCTION__);
 255     return STATUS_NOT_IMPLEMENTED;
 256 }
 257
 258 /* EOF */