NTSTATUS
NTAPI
ChannelSetLockEvent(IN PSAC_CHANNEL Channel)
{
NTSTATUS Status;
/* Set the event */
ChannelSetEvent(Channel, LockEvent);
return Status;
}
NTSTATUS
NTAPI
VTUTF8ChannelIWrite(IN PSAC_CHANNEL Channel,
IN PCHAR Buffer,
IN ULONG BufferSize)
{
NTSTATUS Status;
BOOLEAN IsFull;
ULONG Index, i;
CHECK_PARAMETER1(Channel);
CHECK_PARAMETER2(Buffer);
CHECK_PARAMETER_WITH_STATUS(BufferSize > 0, STATUS_INVALID_BUFFER_SIZE);
/* First, check if the input buffer still has space */
Status = VTUTF8ChannelIBufferIsFull(Channel, &IsFull);
if (!NT_SUCCESS(Status)) return Status;
if (IsFull) return STATUS_UNSUCCESSFUL;
/* Get the current buffer index */
Index = VTUTF8ChannelGetIBufferIndex(Channel);
if ((SAC_VTUTF8_IBUFFER_SIZE - Index) < BufferSize)
{
return STATUS_INSUFFICIENT_RESOURCES;
}
/* Copy the new data */
for (i = 0; i < BufferSize; i++)
{
/* Convert the character */
if (SacTranslateUtf8ToUnicode(Buffer[i],
IncomingUtf8ConversionBuffer,
&IncomingUnicodeValue))
{
/* Write it into the buffer */
*(PWCHAR)&Channel->IBuffer[VTUTF8ChannelGetIBufferIndex(Channel)] =
IncomingUnicodeValue;
/* Update the index */
Index = VTUTF8ChannelGetIBufferIndex(Channel);
VTUTF8ChannelSetIBufferIndex(Channel, Index + sizeof(WCHAR));
}
}
/* Signal the event, if one was set */
if (Channel->Flags & SAC_CHANNEL_FLAG_HAS_NEW_DATA_EVENT)
{
ChannelSetEvent(Channel, HasNewDataEvent);
}
/* All done */
return STATUS_SUCCESS;
}
NTSTATUS
NTAPI
ChannelClose(IN PSAC_CHANNEL Channel)
{
NTSTATUS Status;
CHECK_PARAMETER(Channel);
/* Set the channel inactive */
ChannelSetStatus(Channel, Inactive);
/* Set the close event */
if (Channel->Flags & SAC_CHANNEL_FLAG_CLOSE_EVENT)
{
ChannelSetEvent(Channel, CloseEvent);
}
/* Close all the handles */
Status = ChannelDereferenceHandles(Channel);
return Status;
}
NTSTATUS
NTAPI
RawChannelIWrite(IN PSAC_CHANNEL Channel,
IN PCHAR Buffer,
IN ULONG BufferSize)
{
NTSTATUS Status;
BOOLEAN IsFull;
ULONG Index;
CHECK_PARAMETER1(Channel);
CHECK_PARAMETER2(Buffer);
CHECK_PARAMETER_WITH_STATUS(BufferSize > 0, STATUS_INVALID_BUFFER_SIZE);
/* First, check if the input buffer still has space */
Status = RawChannelIBufferIsFull(Channel, &IsFull);
if (!NT_SUCCESS(Status)) return Status;
if (IsFull) return STATUS_UNSUCCESSFUL;
/* Get the current buffer index */
Index = RawChannelGetIBufferIndex(Channel);
if ((SAC_RAW_IBUFFER_SIZE - Index) < BufferSize)
{
return STATUS_INSUFFICIENT_RESOURCES;
}
/* Copy the new data */
RtlCopyMemory(&Channel->IBuffer[Index], Buffer, BufferSize);
/* Update the index */
RawChannelSetIBufferIndex(Channel, BufferSize + Index);
/* Signal the event, if one was set */
if (Channel->Flags & SAC_CHANNEL_FLAG_HAS_NEW_DATA_EVENT)
{
ChannelSetEvent(Channel, HasNewDataEvent);
}
/* All done */
return STATUS_SUCCESS;
}