text: /**
   * FreeRDP: A Remote Desktop Protocol Implementation
   * Input PDUs
   *
   * Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  #include <freerdp/config.h>
  
  #include <winpr/crt.h>
  #include <winpr/assert.h>
  
  #include <freerdp/input.h>
  #include <freerdp/log.h>
  
  #include "message.h"
  
  #include "input.h"
  
  #define TAG FREERDP_TAG("core")
  
  /* Input Events */
  #define INPUT_EVENT_SYNC 0x0000
  #define INPUT_EVENT_SCANCODE 0x0004
  #define INPUT_EVENT_UNICODE 0x0005
  #define INPUT_EVENT_MOUSE 0x8001
  #define INPUT_EVENT_MOUSEX 0x8002
  
  #define RDP_CLIENT_INPUT_PDU_HEADER_LENGTH 4
  
  static void rdp_write_client_input_pdu_header(wStream* s, UINT16 number)
  {
  	Stream_Write_UINT16(s, 1); /* numberEvents (2 bytes) */
  	Stream_Write_UINT16(s, 0); /* pad2Octets (2 bytes) */
  }
  
  static void rdp_write_input_event_header(wStream* s, UINT32 time, UINT16 type)
  {
  	Stream_Write_UINT32(s, time); /* eventTime (4 bytes) */
  	Stream_Write_UINT16(s, type); /* messageType (2 bytes) */
  }
  
  static wStream* rdp_client_input_pdu_init(rdpRdp* rdp, UINT16 type)
  {
  	wStream* s;
  	s = rdp_data_pdu_init(rdp);
  
  	if (!s)
  		return NULL;
  
  	rdp_write_client_input_pdu_header(s, 1);
  	rdp_write_input_event_header(s, 0, type);
  	return s;
  }
  
  static BOOL rdp_send_client_input_pdu(rdpRdp* rdp, wStream* s)
  {
  	return rdp_send_data_pdu(rdp, s, DATA_PDU_TYPE_INPUT, rdp->mcs->userId);
  }
  
  static void input_write_synchronize_event(wStream* s, UINT32 flags)
  {
  	Stream_Write_UINT16(s, 0);     /* pad2Octets (2 bytes) */
  	Stream_Write_UINT32(s, flags); /* toggleFlags (4 bytes) */
  }
  
  static BOOL input_send_synchronize_event(rdpInput* input, UINT32 flags)
  {
  	wStream* s;
  	rdpRdp* rdp;
  
  	if (!input || !input->context)
  		return FALSE;
  
  	rdp = input->context->rdp;
  	s = rdp_client_input_pdu_init(rdp, INPUT_EVENT_SYNC);
  
  	if (!s)
  		return FALSE;
  
  	input_write_synchronize_event(s, flags);
  	return rdp_send_client_input_pdu(rdp, s);
  }
  
  static void input_write_keyboard_event(wStream* s, UINT16 flags, UINT16 code)
  {
  	Stream_Write_UINT16(s, flags); /* keyboardFlags (2 bytes) */
  	Stream_Write_UINT16(s, code);  /* keyCode (2 bytes) */
  	Stream_Write_UINT16(s, 0);     /* pad2Octets (2 bytes) */
  }
  
  static BOOL input_send_keyboard_event(rdpInput* input, UINT16 flags, UINT16 code)
  {
  	wStream* s;
  	rdpRdp* rdp;
  
  	if (!input || !input->context)
  		return FALSE;
  
  	rdp = input->context->rdp;
  	s = rdp_client_input_pdu_init(rdp, INPUT_EVENT_SCANCODE);
  
  	if (!s)
  		return FALSE;
  
  	input_write_keyboard_event(s, flags, code);
  	return rdp_send_client_input_pdu(rdp, s);
  }
  
  static void input_write_unicode_keyboard_event(wStream* s, UINT16 flags, UINT16 code)
  {
  	Stream_Write_UINT16(s, flags); /* keyboardFlags (2 bytes) */
  	Stream_Write_UINT16(s, code);  /* unicodeCode (2 bytes) */
  	Stream_Write_UINT16(s, 0);     /* pad2Octets (2 bytes) */
  }
  
  static BOOL input_send_unicode_keyboard_event(rdpInput* input, UINT16 flags, UINT16 code)
  {
  	wStream* s;
  	rdpRdp* rdp;
  
  	if (!input || !input->context)
  		return FALSE;
  
  	if (!input->context->settings->UnicodeInput)
  	{
  		WLog_WARN(TAG, "Unicode input not supported by server.");
  		return FALSE;
  	}
  
  	rdp = input->context->rdp;
  	s = rdp_client_input_pdu_init(rdp, INPUT_EVENT_UNICODE);
  
  	if (!s)
  		return FALSE;
  
  	input_write_unicode_keyboard_event(s, flags, code);
  	return rdp_send_client_input_pdu(rdp, s);
  }
  
  static void input_write_mouse_event(wStream* s, UINT16 flags, UINT16 x, UINT16 y)
  {
  	Stream_Write_UINT16(s, flags); /* pointerFlags (2 bytes) */
  	Stream_Write_UINT16(s, x);     /* xPos (2 bytes) */
  	Stream_Write_UINT16(s, y);     /* yPos (2 bytes) */
  }
  
  static BOOL input_send_mouse_event(rdpInput* input, UINT16 flags, UINT16 x, UINT16 y)
  {
  	wStream* s;
  	rdpRdp* rdp;
  
  	if (!input || !input->context || !input->context->settings)
  		return FALSE;
  
  	rdp = input->context->rdp;
  
  	if (!input->context->settings->HasHorizontalWheel)
  	{
  		if (flags & PTR_FLAGS_HWHEEL)
  		{
  			WLog_WARN(TAG,
  			          "skip mouse event %" PRIu16 "x%" PRIu16 " flags=0x%04" PRIX16
  			          ", no horizontal mouse wheel supported",
  			          x, y, flags);
  			return TRUE;
  		}
  	}
  
  	s = rdp_client_input_pdu_init(rdp, INPUT_EVENT_MOUSE);
  
  	if (!s)
  		return FALSE;
  
  	input_write_mouse_event(s, flags, x, y);
  	return rdp_send_client_input_pdu(rdp, s);
  }
  
  static void input_write_extended_mouse_event(wStream* s, UINT16 flags, UINT16 x, UINT16 y)
  {
  	Stream_Write_UINT16(s, flags); /* pointerFlags (2 bytes) */
  	Stream_Write_UINT16(s, x);     /* xPos (2 bytes) */
  	Stream_Write_UINT16(s, y);     /* yPos (2 bytes) */
  }
  
  static BOOL input_send_extended_mouse_event(rdpInput* input, UINT16 flags, UINT16 x, UINT16 y)
  {
  	wStream* s;
  	rdpRdp* rdp;
  
  	if (!input || !input->context)
  		return FALSE;
  
  	if (!input->context->settings->HasExtendedMouseEvent)
  	{
  		WLog_WARN(TAG,
  		          "skip extended mouse event %" PRIu16 "x%" PRIu16 " flags=0x%04" PRIX16
  		          ", no extended mouse events supported",
  		          x, y, flags);
  		return TRUE;
  	}
  
  	rdp = input->context->rdp;
  	s = rdp_client_input_pdu_init(rdp, INPUT_EVENT_MOUSEX);
  
  	if (!s)
  		return FALSE;
  
  	input_write_extended_mouse_event(s, flags, x, y);
  	return rdp_send_client_input_pdu(rdp, s);
  }
  
  static BOOL input_send_focus_in_event(rdpInput* input, UINT16 toggleStates)
  {
  	/* send a tab up like mstsc.exe */
  	if (!input_send_keyboard_event(input, KBD_FLAGS_RELEASE, 0x0f))
  		return FALSE;
  
  	/* send the toggle key states */
  	if (!input_send_synchronize_event(input, (toggleStates & 0x1F)))
  		return FALSE;
  
  	/* send another tab up like mstsc.exe */
  	return input_send_keyboard_event(input, KBD_FLAGS_RELEASE, 0x0f);
  }
  
  static BOOL input_send_keyboard_pause_event(rdpInput* input)
  {
  	/* In ancient days, pause-down without control sent E1 1D 45 E1 9D C5,
  	 * and pause-up sent nothing.  However, reverse engineering mstsc shows
  	 * it sending the following sequence:
  	 */
  
  	/* Control down (0x1D) */
  	if (!input_send_keyboard_event(input, KBD_FLAGS_EXTENDED1,
  	                               RDP_SCANCODE_CODE(RDP_SCANCODE_LCONTROL)))
  		return FALSE;
  
  	/* Numlock down (0x45) */
  	if (!input_send_keyboard_event(input, 0, RDP_SCANCODE_CODE(RDP_SCANCODE_NUMLOCK)))
  		return FALSE;
  
  	/* Control up (0x1D) */
  	if (!input_send_keyboard_event(input, KBD_FLAGS_RELEASE | KBD_FLAGS_EXTENDED1,
  	                               RDP_SCANCODE_CODE(RDP_SCANCODE_LCONTROL)))
  		return FALSE;
  
  	/* Numlock up (0x45) */
  	return input_send_keyboard_event(input, KBD_FLAGS_RELEASE,
  	                                 RDP_SCANCODE_CODE(RDP_SCANCODE_NUMLOCK));
  }
  
  static BOOL input_send_fastpath_synchronize_event(rdpInput* input, UINT32 flags)
  {
  	wStream* s;
  	rdpRdp* rdp;
  
  	if (!input || !input->context)
  		return FALSE;
  
  	rdp = input->context->rdp;
  	/* The FastPath Synchronization eventFlags has identical values as SlowPath */
  	s = fastpath_input_pdu_init(rdp->fastpath, (BYTE)flags, FASTPATH_INPUT_EVENT_SYNC);
  
  	if (!s)
  		return FALSE;
  
  	return fastpath_send_input_pdu(rdp->fastpath, s);
  }
  
  static BOOL input_send_fastpath_keyboard_event(rdpInput* input, UINT16 flags, UINT16 code)
  {
  	wStream* s;
  	BYTE eventFlags = 0;
  	rdpRdp* rdp;
  
  	if (!input || !input->context)
  		return FALSE;
  
  	rdp = input->context->rdp;
  	eventFlags |= (flags & KBD_FLAGS_RELEASE) ? FASTPATH_INPUT_KBDFLAGS_RELEASE : 0;
  	eventFlags |= (flags & KBD_FLAGS_EXTENDED) ? FASTPATH_INPUT_KBDFLAGS_EXTENDED : 0;
  	eventFlags |= (flags & KBD_FLAGS_EXTENDED1) ? FASTPATH_INPUT_KBDFLAGS_PREFIX_E1 : 0;
  	s = fastpath_input_pdu_init(rdp->fastpath, eventFlags, FASTPATH_INPUT_EVENT_SCANCODE);
  
  	if (!s)
  		return FALSE;
  
  	WINPR_ASSERT(code <= UINT8_MAX);
  	Stream_Write_UINT8(s, (UINT8)code); /* keyCode (1 byte) */
  	return fastpath_send_input_pdu(rdp->fastpath, s);
  }
  
  static BOOL input_send_fastpath_unicode_keyboard_event(rdpInput* input, UINT16 flags, UINT16 code)
  {
  	wStream* s;
  	BYTE eventFlags = 0;
  	rdpRdp* rdp;
  
  	if (!input || !input->context)
  		return FALSE;
  
  	if (!input->context->settings->UnicodeInput)
  	{
  		WLog_WARN(TAG, "Unicode input not supported by server.");
  		return FALSE;
  	}
  
  	rdp = input->context->rdp;
  	eventFlags |= (flags & KBD_FLAGS_RELEASE) ? FASTPATH_INPUT_KBDFLAGS_RELEASE : 0;
  	s = fastpath_input_pdu_init(rdp->fastpath, eventFlags, FASTPATH_INPUT_EVENT_UNICODE);
  
  	if (!s)
  		return FALSE;
  
  	Stream_Write_UINT16(s, code); /* unicodeCode (2 bytes) */
  	return fastpath_send_input_pdu(rdp->fastpath, s);
  }
  
  static BOOL input_send_fastpath_mouse_event(rdpInput* input, UINT16 flags, UINT16 x, UINT16 y)
  {
  	wStream* s;
  	rdpRdp* rdp;
  
  	if (!input || !input->context || !input->context->settings)
  		return FALSE;
  
  	rdp = input->context->rdp;
  
  	if (!input->context->settings->HasHorizontalWheel)
  	{
  		if (flags & PTR_FLAGS_HWHEEL)
  		{
  			WLog_WARN(TAG,
  			          "skip mouse event %" PRIu16 "x%" PRIu16 " flags=0x%04" PRIX16
  			          ", no horizontal mouse wheel supported",
  			          x, y, flags);
  			return TRUE;
  		}
  	}
  
  	s = fastpath_input_pdu_init(rdp->fastpath, 0, FASTPATH_INPUT_EVENT_MOUSE);
  
  	if (!s)
  		return FALSE;
  
  	input_write_mouse_event(s, flags, x, y);
  	return fastpath_send_input_pdu(rdp->fastpath, s);
  }
  
  static BOOL input_send_fastpath_extended_mouse_event(rdpInput* input, UINT16 flags, UINT16 x,
                                                       UINT16 y)
  {
  	wStream* s;
  	rdpRdp* rdp;
  
  	if (!input || !input->context)
  		return FALSE;
  
  	if (!input->context->settings->HasExtendedMouseEvent)
  	{
  		WLog_WARN(TAG,
  		          "skip extended mouse event %" PRIu16 "x%" PRIu16 " flags=0x%04" PRIX16
  		          ", no extended mouse events supported",
  		          x, y, flags);
  		return TRUE;
  	}
  
  	rdp = input->context->rdp;
  	s = fastpath_input_pdu_init(rdp->fastpath, 0, FASTPATH_INPUT_EVENT_MOUSEX);
  
  	if (!s)
  		return FALSE;
  
  	input_write_extended_mouse_event(s, flags, x, y);
  	return fastpath_send_input_pdu(rdp->fastpath, s);
  }
  
  static BOOL input_send_fastpath_focus_in_event(rdpInput* input, UINT16 toggleStates)
  {
  	wStream* s;
  	BYTE eventFlags = 0;
  	rdpRdp* rdp;
  
  	if (!input || !input->context)
  		return FALSE;
  
  	rdp = input->context->rdp;
  	s = fastpath_input_pdu_init_header(rdp->fastpath);
  
  	if (!s)
  		return FALSE;
  
  	/* send a tab up like mstsc.exe */
  	eventFlags = FASTPATH_INPUT_KBDFLAGS_RELEASE | FASTPATH_INPUT_EVENT_SCANCODE << 5;
  	Stream_Write_UINT8(s, eventFlags); /* Key Release event (1 byte) */
  	Stream_Write_UINT8(s, 0x0f);       /* keyCode (1 byte) */
  	/* send the toggle key states */
  	eventFlags = (toggleStates & 0x1F) | FASTPATH_INPUT_EVENT_SYNC << 5;
  	Stream_Write_UINT8(s, eventFlags); /* toggle state (1 byte) */
  	/* send another tab up like mstsc.exe */
  	eventFlags = FASTPATH_INPUT_KBDFLAGS_RELEASE | FASTPATH_INPUT_EVENT_SCANCODE << 5;
  	Stream_Write_UINT8(s, eventFlags); /* Key Release event (1 byte) */
  	Stream_Write_UINT8(s, 0x0f);       /* keyCode (1 byte) */
  	return fastpath_send_multiple_input_pdu(rdp->fastpath, s, 3);
  }
  
  static BOOL input_send_fastpath_keyboard_pause_event(rdpInput* input)
  {
  	/* In ancient days, pause-down without control sent E1 1D 45 E1 9D C5,
  	 * and pause-up sent nothing.  However, reverse engineering mstsc shows
  	 * it sending the following sequence:
  	 */
  	wStream* s;
  	const BYTE keyDownEvent = FASTPATH_INPUT_EVENT_SCANCODE << 5;
  	const BYTE keyUpEvent = (FASTPATH_INPUT_EVENT_SCANCODE << 5) | FASTPATH_INPUT_KBDFLAGS_RELEASE;
  	rdpRdp* rdp;
  
  	if (!input || !input->context)
  		return FALSE;
  
  	rdp = input->context->rdp;
  	s = fastpath_input_pdu_init_header(rdp->fastpath);
  
  	if (!s)
  		return FALSE;
  
  	/* Control down (0x1D) */
  	Stream_Write_UINT8(s, keyDownEvent | FASTPATH_INPUT_KBDFLAGS_PREFIX_E1);
  	Stream_Write_UINT8(s, RDP_SCANCODE_CODE(RDP_SCANCODE_LCONTROL));
  	/* Numlock down (0x45) */
  	Stream_Write_UINT8(s, keyDownEvent);
  	Stream_Write_UINT8(s, RDP_SCANCODE_CODE(RDP_SCANCODE_NUMLOCK));
  	/* Control up (0x1D) */
  	Stream_Write_UINT8(s, keyUpEvent | FASTPATH_INPUT_KBDFLAGS_PREFIX_E1);
  	Stream_Write_UINT8(s, RDP_SCANCODE_CODE(RDP_SCANCODE_LCONTROL));
  	/* Numlock down (0x45) */
  	Stream_Write_UINT8(s, keyUpEvent);
  	Stream_Write_UINT8(s, RDP_SCANCODE_CODE(RDP_SCANCODE_NUMLOCK));
  	return fastpath_send_multiple_input_pdu(rdp->fastpath, s, 4);
  }
  
  static BOOL input_recv_sync_event(rdpInput* input, wStream* s)
  {
  	UINT32 toggleFlags;
  
  	if (Stream_GetRemainingLength(s) < 6)
  		return FALSE;
  
  	Stream_Seek(s, 2);                  /* pad2Octets (2 bytes) */
  	Stream_Read_UINT32(s, toggleFlags); /* toggleFlags (4 bytes) */
  	return IFCALLRESULT(TRUE, input->SynchronizeEvent, input, toggleFlags);
  }
  
  static BOOL input_recv_keyboard_event(rdpInput* input, wStream* s)
  {
  	UINT16 keyboardFlags, keyCode;
  
  	if (Stream_GetRemainingLength(s) < 6)
  		return FALSE;
  
  	Stream_Read_UINT16(s, keyboardFlags); /* keyboardFlags (2 bytes) */
  	Stream_Read_UINT16(s, keyCode);       /* keyCode (2 bytes) */
  	Stream_Seek(s, 2);                    /* pad2Octets (2 bytes) */
  
  	/**
  	 * Note: A lot of code in FreeRDP and in dependent projects checks the
  	 * KBDFLAGS_DOWN flag in order to detect a key press.
  	 * According to the specs only the absence of the slow-path
  	 * KBDFLAGS_RELEASE flag indicates a key-down event.
  	 * The slow-path KBDFLAGS_DOWN flag merely indicates that the key was
  	 * down prior to this event.
  	 * The checks for KBDFLAGS_DOWN only work successfully because the code
  	 * handling the fast-path keyboard input sets the KBDFLAGS_DOWN flag if
  	 * the FASTPATH_INPUT_KBDFLAGS_RELEASE flag is missing.
  	 * Since the same input callback is used for slow- and fast-path events
  	 * we have to follow that "convention" here.
  	 */
  
  	if (keyboardFlags & KBD_FLAGS_RELEASE)
  		keyboardFlags &= ~KBD_FLAGS_DOWN;
  	else
  		keyboardFlags |= KBD_FLAGS_DOWN;
  
  	return IFCALLRESULT(TRUE, input->KeyboardEvent, input, keyboardFlags, keyCode);
  }
  
  static BOOL input_recv_unicode_keyboard_event(rdpInput* input, wStream* s)
  {
  	UINT16 keyboardFlags, unicodeCode;
  
  	if (Stream_GetRemainingLength(s) < 6)
  		return FALSE;
  
  	Stream_Read_UINT16(s, keyboardFlags); /* keyboardFlags (2 bytes) */
  	Stream_Read_UINT16(s, unicodeCode);   /* unicodeCode (2 bytes) */
  	Stream_Seek(s, 2);                    /* pad2Octets (2 bytes) */
  
  	/* "fix" keyboardFlags - see comment in input_recv_keyboard_event() */
  
  	if (keyboardFlags & KBD_FLAGS_RELEASE)
  		keyboardFlags &= ~KBD_FLAGS_DOWN;
  	else
  		keyboardFlags |= KBD_FLAGS_DOWN;
  
  	return IFCALLRESULT(TRUE, input->UnicodeKeyboardEvent, input, keyboardFlags, unicodeCode);
  }
  
  static BOOL input_recv_mouse_event(rdpInput* input, wStream* s)
  {
  	UINT16 pointerFlags, xPos, yPos;
  
  	if (Stream_GetRemainingLength(s) < 6)
  		return FALSE;
  
  	Stream_Read_UINT16(s, pointerFlags); /* pointerFlags (2 bytes) */
  	Stream_Read_UINT16(s, xPos);         /* xPos (2 bytes) */
  	Stream_Read_UINT16(s, yPos);         /* yPos (2 bytes) */
  	return IFCALLRESULT(TRUE, input->MouseEvent, input, pointerFlags, xPos, yPos);
  }
  
  static BOOL input_recv_extended_mouse_event(rdpInput* input, wStream* s)
  {
  	UINT16 pointerFlags, xPos, yPos;
  
  	if (Stream_GetRemainingLength(s) < 6)
  		return FALSE;
  
  	Stream_Read_UINT16(s, pointerFlags); /* pointerFlags (2 bytes) */
  	Stream_Read_UINT16(s, xPos);         /* xPos (2 bytes) */
  	Stream_Read_UINT16(s, yPos);         /* yPos (2 bytes) */
  	return IFCALLRESULT(TRUE, input->ExtendedMouseEvent, input, pointerFlags, xPos, yPos);
  }
  
  static BOOL input_recv_event(rdpInput* input, wStream* s)
  {
  	UINT16 messageType;
  
  	if (Stream_GetRemainingLength(s) < 6)
  		return FALSE;
  
  	Stream_Seek(s, 4);                  /* eventTime (4 bytes), ignored by the server */
  	Stream_Read_UINT16(s, messageType); /* messageType (2 bytes) */
  
  	switch (messageType)
  	{
  		case INPUT_EVENT_SYNC:
  			if (!input_recv_sync_event(input, s))
  				return FALSE;
  
  			break;
  
  		case INPUT_EVENT_SCANCODE:
  			if (!input_recv_keyboard_event(input, s))
  				return FALSE;
  
  			break;
  
  		case INPUT_EVENT_UNICODE:
  			if (!input_recv_unicode_keyboard_event(input, s))
  				return FALSE;
  
  			break;
  
  		case INPUT_EVENT_MOUSE:
  			if (!input_recv_mouse_event(input, s))
  				return FALSE;
  
  			break;
  
  		case INPUT_EVENT_MOUSEX:
  			if (!input_recv_extended_mouse_event(input, s))
  				return FALSE;
  
  			break;
  
  		default:
  			WLog_ERR(TAG, "Unknown messageType %" PRIu16 "", messageType);
  			/* Each input event uses 6 bytes. */
  			Stream_Seek(s, 6);
  			break;
  	}
  
  	return TRUE;
  }
  
  BOOL input_recv(rdpInput* input, wStream* s)
  {
  	UINT16 i, numberEvents;
  
  	if (!input || !s)
  		return FALSE;
  
  	if (Stream_GetRemainingLength(s) < 4)
  		return FALSE;
  
  	Stream_Read_UINT16(s, numberEvents); /* numberEvents (2 bytes) */
  	Stream_Seek(s, 2);                   /* pad2Octets (2 bytes) */
  
  	/* Each input event uses 6 exactly bytes. */
  	if (Stream_GetRemainingLength(s) / 6 < numberEvents)
  		return FALSE;
  
  	for (i = 0; i < numberEvents; i++)
  	{
  		if (!input_recv_event(input, s))
  			return FALSE;
  	}
  
  	return TRUE;
  }
  
  BOOL input_register_client_callbacks(rdpInput* input)
  {
  	rdpSettings* settings;
  	rdp_input_internal* in = input_cast(input);
  
  	if (!input->context)
  		return FALSE;
  
  	settings = input->context->settings;
  
  	if (!settings)
  		return FALSE;
  
  	if (settings->FastPathInput)
  	{
  		input->SynchronizeEvent = input_send_fastpath_synchronize_event;
  		input->KeyboardEvent = input_send_fastpath_keyboard_event;
  		input->KeyboardPauseEvent = input_send_fastpath_keyboard_pause_event;
  		input->UnicodeKeyboardEvent = input_send_fastpath_unicode_keyboard_event;
  		input->MouseEvent = input_send_fastpath_mouse_event;
  		input->ExtendedMouseEvent = input_send_fastpath_extended_mouse_event;
  		input->FocusInEvent = input_send_fastpath_focus_in_event;
  	}
  	else
  	{
  		input->SynchronizeEvent = input_send_synchronize_event;
  		input->KeyboardEvent = input_send_keyboard_event;
  		input->KeyboardPauseEvent = input_send_keyboard_pause_event;
  		input->UnicodeKeyboardEvent = input_send_unicode_keyboard_event;
  		input->MouseEvent = input_send_mouse_event;
  		input->ExtendedMouseEvent = input_send_extended_mouse_event;
  		input->FocusInEvent = input_send_focus_in_event;
  	}
  
  	in->asynchronous = settings->AsyncInput;
  
  	if (in->asynchronous)
  	{
  		in->proxy = input_message_proxy_new(input);
  
  		if (!in->proxy)
  			return FALSE;
  	}
  
  	return TRUE;
  }
  
  BOOL freerdp_input_send_synchronize_event(rdpInput* input, UINT32 flags)
  {
  	if (!input || !input->context)
  		return FALSE;
  
  	if (freerdp_settings_get_bool(input->context->settings, FreeRDP_SuspendInput))
  		return TRUE;
  
  	return IFCALLRESULT(TRUE, input->SynchronizeEvent, input, flags);
  }
  
  BOOL freerdp_input_send_keyboard_event(rdpInput* input, UINT16 flags, UINT16 code)
  {
  	if (!input || !input->context)
  		return FALSE;
  
  	if (freerdp_settings_get_bool(input->context->settings, FreeRDP_SuspendInput))
  		return TRUE;
  
  	return IFCALLRESULT(TRUE, input->KeyboardEvent, input, flags, code);
  }
  
  BOOL freerdp_input_send_keyboard_event_ex(rdpInput* input, BOOL down, UINT32 rdp_scancode)
  {
  	return freerdp_input_send_keyboard_event(
  	    input,
  	    (RDP_SCANCODE_EXTENDED(rdp_scancode) ? KBD_FLAGS_EXTENDED : 0) |
  	        ((down) ? KBD_FLAGS_DOWN : KBD_FLAGS_RELEASE),
  	    RDP_SCANCODE_CODE(rdp_scancode));
  }
  
  BOOL freerdp_input_send_unicode_keyboard_event(rdpInput* input, UINT16 flags, UINT16 code)
  {
  	if (!input || !input->context)
  		return FALSE;
  
  	if (freerdp_settings_get_bool(input->context->settings, FreeRDP_SuspendInput))
  		return TRUE;
  
  	return IFCALLRESULT(TRUE, input->UnicodeKeyboardEvent, input, flags, code);
  }
  
  BOOL freerdp_input_send_mouse_event(rdpInput* input, UINT16 flags, UINT16 x, UINT16 y)
  {
  	if (!input || !input->context)
  		return FALSE;
  
  	if (freerdp_settings_get_bool(input->context->settings, FreeRDP_SuspendInput))
  		return TRUE;
  
  	return IFCALLRESULT(TRUE, input->MouseEvent, input, flags, x, y);
  }
  
  BOOL freerdp_input_send_extended_mouse_event(rdpInput* input, UINT16 flags, UINT16 x, UINT16 y)
  {
  	if (!input || !input->context)
  		return FALSE;
  
  	if (freerdp_settings_get_bool(input->context->settings, FreeRDP_SuspendInput))
  		return TRUE;
  
  	return IFCALLRESULT(TRUE, input->ExtendedMouseEvent, input, flags, x, y);
  }
  
  BOOL freerdp_input_send_focus_in_event(rdpInput* input, UINT16 toggleStates)
  {
  	if (!input || !input->context)
  		return FALSE;
  
  	if (freerdp_settings_get_bool(input->context->settings, FreeRDP_SuspendInput))
  		return TRUE;
  
  	return IFCALLRESULT(TRUE, input->FocusInEvent, input, toggleStates);
  }
  
  BOOL freerdp_input_send_keyboard_pause_event(rdpInput* input)
  {
  	if (!input || !input->context)
  		return FALSE;
  
  	if (freerdp_settings_get_bool(input->context->settings, FreeRDP_SuspendInput))
  		return TRUE;
  
  	return IFCALLRESULT(TRUE, input->KeyboardPauseEvent, input);
  }
  
  int input_process_events(rdpInput* input)
  {
  	if (!input)
  		return FALSE;
  
  	return input_message_queue_process_pending_messages(input);
  }
  
  static void input_free_queued_message(void* obj)
  {
  	wMessage* msg = (wMessage*)obj;
  	input_message_queue_free_message(msg);
  }
  
  rdpInput* input_new(rdpRdp* rdp)
  {
  	const wObject cb = { NULL, NULL, NULL, input_free_queued_message, NULL };
  	rdp_input_internal* input = (rdp_input_internal*)calloc(1, sizeof(rdp_input_internal));
  
  	WINPR_UNUSED(rdp);
  
  	if (!input)
  		return NULL;
  
  	input->queue = MessageQueue_New(&cb);
  
  	if (!input->queue)
  	{
  		free(input);
  		return NULL;
  	}
  
  	return &input->common;
  }
  
  void input_free(rdpInput* input)
  {
  	if (input != NULL)
  	{
  		rdp_input_internal* in = input_cast(input);
  		if (in->asynchronous)
  			input_message_proxy_free(in->proxy);
  
  		MessageQueue_Free(in->queue);
  		free(in);
  	}
  }
  