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Check for a valid console handle.

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svn path=/trunk/; revision=15688
This commit is contained in:
Hartmut Birr 2005-05-30 20:13:35 +00:00
parent e3d66fd5c6
commit 1fac54757a
1 changed files with 20 additions and 13 deletions
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33
reactos/subsys/csrss/api/handle.c
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@ -22,6 +22,13 @@
static unsigned ObjectDefinitionsCount = 0;
static PCSRSS_OBJECT_DEFINITION ObjectDefinitions = NULL;
BOOL
CsrIsConsoleHandle(HANDLE Handle)
{
return ((((ULONG)Handle) & 0x10000003) == 0x3) ? TRUE : FALSE;
}
NTSTATUS FASTCALL
CsrRegisterObjectDefinitions(PCSRSS_OBJECT_DEFINITION NewDefinitions)
{
@ -66,7 +73,7 @@ NTSTATUS STDCALL CsrGetObject( PCSRSS_PROCESS_DATA ProcessData, HANDLE Handle, O
{
return STATUS_INVALID_PARAMETER;
}
if (ProcessData->HandleTableSize <= h)
if (!CsrIsConsoleHandle(Handle) || ProcessData->HandleTableSize <= h)
{
DPRINT1("CsrGetObject returning invalid handle\n");
return STATUS_INVALID_HANDLE;
@ -117,7 +124,7 @@ CsrReleaseObject(PCSRSS_PROCESS_DATA ProcessData,
{
return STATUS_INVALID_PARAMETER;
}
if (h >= ProcessData->HandleTableSize || ProcessData->HandleTable[h] == NULL)
if (!CsrIsConsoleHandle(Handle) || h >= ProcessData->HandleTableSize || ProcessData->HandleTable[h] == NULL)
{
return STATUS_INVALID_HANDLE;
}
@ -133,7 +140,7 @@ CsrReleaseObject(PCSRSS_PROCESS_DATA ProcessData,
NTSTATUS STDCALL CsrInsertObject( PCSRSS_PROCESS_DATA ProcessData, PHANDLE Handle, Object_t *Object )
{
ULONG i;
PVOID* NewBlock;
PVOID* Block;
if (ProcessData == NULL)
{
@ -151,19 +158,19 @@ NTSTATUS STDCALL CsrInsertObject( PCSRSS_PROCESS_DATA ProcessData, PHANDLE Handl
}
if (i >= ProcessData->HandleTableSize)
{
NewBlock = RtlAllocateHeap(CsrssApiHeap,
HEAP_ZERO_MEMORY,
(ProcessData->HandleTableSize + 64) * sizeof(HANDLE));
if (NewBlock == NULL)
Block = RtlAllocateHeap(CsrssApiHeap,
HEAP_ZERO_MEMORY,
(ProcessData->HandleTableSize + 64) * sizeof(HANDLE));
if (Block == NULL)
{
RtlLeaveCriticalSection(&ProcessData->HandleTableLock);
return(STATUS_UNSUCCESSFUL);
}
RtlCopyMemory(NewBlock,
RtlCopyMemory(Block,
ProcessData->HandleTable,
ProcessData->HandleTableSize * sizeof(HANDLE));
RtlFreeHeap( CsrssApiHeap, 0, ProcessData->HandleTable );
ProcessData->HandleTable = (Object_t **)NewBlock;
Block = InterlockedExchangePointer(&ProcessData->HandleTable, Block);
RtlFreeHeap( CsrssApiHeap, 0, Block );
ProcessData->HandleTableSize += 64;
}
ProcessData->HandleTable[i] = Object;
@ -178,10 +185,10 @@ NTSTATUS STDCALL CsrVerifyObject( PCSRSS_PROCESS_DATA ProcessData, HANDLE Handle
ULONG h = (((ULONG)Handle) >> 2) - 1;
if (ProcessData == NULL)
{
{
return STATUS_INVALID_PARAMETER;
}
if (h >= ProcessData->HandleTableSize)
}
if (!CsrIsConsoleHandle(Handle) || h >= ProcessData->HandleTableSize)
{
return STATUS_INVALID_HANDLE;
}