154 lines
5.1 KiB
C
154 lines
5.1 KiB
C
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/*************************************************************************
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*
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* keyboard.c
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*
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* This module contains routines for managing the ICA keyboard channel.
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*
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* Copyright 1998, Microsoft.
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*
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*************************************************************************/
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/*
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* Includes
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*/
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#include <precomp.h>
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#pragma hdrstop
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#include <ntddkbd.h>
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NTSTATUS
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IcaDeviceControlKeyboard(
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IN PICA_CHANNEL pChannel,
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IN PIRP Irp,
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IN PIO_STACK_LOCATION IrpSp
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)
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/*++
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Routine Description:
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This is the device control routine for the ICA keyboard channel.
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Arguments:
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pChannel -- pointer to ICA_CHANNEL object
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Irp - Pointer to I/O request packet
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IrpSp - pointer to the stack location to use for this request.
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Return Value:
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NTSTATUS -- Indicates whether the request was successfully queued.
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--*/
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{
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ULONG code;
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SD_IOCTL SdIoctl;
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PICA_STACK pStack;
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NTSTATUS Status;
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/*
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* Extract the IOCTL control code and process the request.
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*/
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code = IrpSp->Parameters.DeviceIoControl.IoControlCode;
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TRACECHANNEL(( pChannel, TC_ICADD, TT_API1, "ICADD: IcaDeviceControlKeyboard, fc %d, ref %u (enter)\n",
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(code & 0x3fff) >> 2, pChannel->RefCount ));
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switch ( code ) {
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#if 0 // no longer used
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/*
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* Special IOCTL to allow keyboard input data to be fed
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* into the keyboard channel.
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*/
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case IOCTL_KEYBOARD_ICA_INPUT :
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/*
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* Make sure the input data is the correct size.
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*/
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if ( IrpSp->Parameters.DeviceIoControl.InputBufferLength %
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sizeof(KEYBOARD_INPUT_DATA) )
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return( STATUS_BUFFER_TOO_SMALL );
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/*
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* We need a stack object to pass to IcaChannelInputInternal.
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* Any one will do so we grab the head of the stack list.
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* (There MUST be one for this IOCTL to succeed.)
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*/
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IcaLockConnection( pChannel->pConnect );
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if ( IsListEmpty( &pChannel->pConnect->StackHead ) ) {
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IcaUnlockConnection( pChannel->pConnect );
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return( STATUS_INVALID_DEVICE_REQUEST );
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}
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pStack = CONTAINING_RECORD( pChannel->pConnect->StackHead.Flink,
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ICA_STACK, StackEntry );
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IcaReferenceStack( pStack );
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IcaUnlockConnection( pChannel->pConnect );
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/*
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* Send keyboard input
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*/
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IcaChannelInputInternal( pStack, Channel_Keyboard, 0, NULL,
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(PCHAR)IrpSp->Parameters.DeviceIoControl.Type3InputBuffer,
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IrpSp->Parameters.DeviceIoControl.InputBufferLength );
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IcaDereferenceStack( pStack );
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Status = STATUS_SUCCESS;
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break;
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#endif
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/*
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* The following keyboard ioctls use METHOD_NEITHER so get the
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* input buffer from the DeviceIoControl parameters.
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*/
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case IOCTL_KEYBOARD_ICA_LAYOUT :
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case IOCTL_KEYBOARD_ICA_SCANMAP :
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case IOCTL_KEYBOARD_ICA_TYPE :
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if ( Irp->RequestorMode != KernelMode ) {
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ProbeForRead( IrpSp->Parameters.DeviceIoControl.Type3InputBuffer,
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IrpSp->Parameters.DeviceIoControl.InputBufferLength,
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TYPE_ALIGNMENT(BYTE) );
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ProbeForWrite( Irp->UserBuffer,
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IrpSp->Parameters.DeviceIoControl.OutputBufferLength,
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TYPE_ALIGNMENT(BYTE) );
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}
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SdIoctl.IoControlCode = code;
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SdIoctl.InputBuffer = IrpSp->Parameters.DeviceIoControl.Type3InputBuffer;
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SdIoctl.InputBufferLength = IrpSp->Parameters.DeviceIoControl.InputBufferLength;
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SdIoctl.OutputBuffer = Irp->UserBuffer;
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SdIoctl.OutputBufferLength = IrpSp->Parameters.DeviceIoControl.OutputBufferLength;
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Status = IcaCallDriver( pChannel, SD$IOCTL, &SdIoctl );
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break;
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/*
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* All other keyboard ioctls use METHOD_BUFFERED so get the
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* input buffer from the AssociatedIrp.SystemBuffer field.
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*/
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default:
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SdIoctl.IoControlCode = code;
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SdIoctl.InputBuffer = Irp->AssociatedIrp.SystemBuffer;
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SdIoctl.InputBufferLength = IrpSp->Parameters.DeviceIoControl.InputBufferLength;
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SdIoctl.OutputBuffer = SdIoctl.InputBuffer;
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SdIoctl.OutputBufferLength = IrpSp->Parameters.DeviceIoControl.OutputBufferLength;
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Status = IcaCallDriver( pChannel, SD$IOCTL, &SdIoctl );
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if (Status == STATUS_SUCCESS )
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Irp->IoStatus.Information = SdIoctl.BytesReturned;
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break;
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}
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TRACECHANNEL(( pChannel, TC_ICADD, TT_API1, "ICADD: IcaDeviceControlKeyboard, fc %d, ref %u, 0x%x\n",
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(code & 0x3fff) >> 2, pChannel->RefCount, Status ));
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return( Status );
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}
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