rdp.c File Reference

#include <freerdp/config.h>
#include <winpr/crt.h>
#include <winpr/string.h>
#include <winpr/synch.h>
#include <winpr/assert.h>
#include "rdp.h"
#include "state.h"
#include "info.h"
#include "utils.h"
#include "mcs.h"
#include "redirection.h"
#include <freerdp/codec/bulk.h>
#include <freerdp/crypto/per.h>
#include <freerdp/log.h>

Macros
#define	TAG   FREERDP_TAG("core.rdp")

Functions
const char *	data_pdu_type_to_string (UINT8 type)
static BOOL	rdp_read_flow_control_pdu (wStream *s, UINT16 *type, UINT16 *channel_id)
static BOOL	rdp_write_share_control_header (wStream *s, UINT16 length, UINT16 type, UINT16 channel_id)
static BOOL	rdp_write_share_data_header (wStream *s, UINT16 length, BYTE type, UINT32 share_id)
BOOL	rdp_read_security_header (wStream *s, UINT16 *flags, UINT16 *length)
BOOL	rdp_write_security_header (wStream *s, UINT16 flags)
BOOL	rdp_read_share_control_header (wStream *s, UINT16 *tpktLength, UINT16 *remainingLength, UINT16 *type, UINT16 *channel_id)
BOOL	rdp_read_share_data_header (wStream *s, UINT16 *length, BYTE *type, UINT32 *shareId, BYTE *compressedType, UINT16 *compressedLength)
static BOOL	rdp_security_stream_init (rdpRdp *rdp, wStream *s, BOOL sec_header)
wStream *	rdp_send_stream_init (rdpRdp *rdp)
wStream *	rdp_send_stream_pdu_init (rdpRdp *rdp)
wStream *	rdp_data_pdu_init (rdpRdp *rdp)
BOOL	rdp_set_error_info (rdpRdp *rdp, UINT32 errorInfo)
wStream *	rdp_message_channel_pdu_init (rdpRdp *rdp)
BOOL	rdp_read_header (rdpRdp *rdp, wStream *s, UINT16 *length, UINT16 *channelId)
BOOL	rdp_write_header (rdpRdp *rdp, wStream *s, UINT16 length, UINT16 channelId)
static BOOL	rdp_security_stream_out (rdpRdp *rdp, wStream *s, int length, UINT32 sec_flags, UINT32 *pad)
static UINT32	rdp_get_sec_bytes (rdpRdp *rdp, UINT16 sec_flags)
BOOL	rdp_send (rdpRdp *rdp, wStream *s, UINT16 channel_id)
BOOL	rdp_send_pdu (rdpRdp *rdp, wStream *s, UINT16 type, UINT16 channel_id)
BOOL	rdp_send_data_pdu (rdpRdp *rdp, wStream *s, BYTE type, UINT16 channel_id)
BOOL	rdp_send_message_channel_pdu (rdpRdp *rdp, wStream *s, UINT16 sec_flags)
static BOOL	rdp_recv_server_shutdown_denied_pdu (rdpRdp *rdp, wStream *s)
static BOOL	rdp_recv_server_set_keyboard_indicators_pdu (rdpRdp *rdp, wStream *s)
static BOOL	rdp_recv_server_set_keyboard_ime_status_pdu (rdpRdp *rdp, wStream *s)
static BOOL	rdp_recv_set_error_info_data_pdu (rdpRdp *rdp, wStream *s)
static BOOL	rdp_recv_server_auto_reconnect_status_pdu (rdpRdp *rdp, wStream *s)
static BOOL	rdp_recv_server_status_info_pdu (rdpRdp *rdp, wStream *s)
static BOOL	rdp_recv_monitor_layout_pdu (rdpRdp *rdp, wStream *s)
state_run_t	rdp_recv_data_pdu (rdpRdp *rdp, wStream *s)
state_run_t	rdp_recv_message_channel_pdu (rdpRdp *rdp, wStream *s, UINT16 securityFlags)
state_run_t	rdp_recv_out_of_sequence_pdu (rdpRdp *rdp, wStream *s)
BOOL	rdp_decrypt (rdpRdp *rdp, wStream *s, UINT16 *pLength, UINT16 securityFlags)
const char *	pdu_type_to_str (UINT16 pduType)
static state_run_t	rdp_recv_tpkt_pdu (rdpRdp *rdp, wStream *s)
static state_run_t	rdp_recv_fastpath_pdu (rdpRdp *rdp, wStream *s)
static state_run_t	rdp_recv_pdu (rdpRdp *rdp, wStream *s)
static state_run_t	rdp_handle_sc_flags (rdpRdp *rdp, wStream *s, UINT32 flag, CONNECTION_STATE nextState)
static state_run_t	rdp_recv_callback_int (rdpTransport *transport, wStream *s, void *extra)
state_run_t	rdp_recv_callback (rdpTransport *transport, wStream *s, void *extra)
BOOL	rdp_send_channel_data (rdpRdp *rdp, UINT16 channelId, const BYTE *data, size_t size)
BOOL	rdp_channel_send_packet (rdpRdp *rdp, UINT16 channelId, size_t totalSize, UINT32 flags, const BYTE *data, size_t chunkSize)
BOOL	rdp_send_error_info (rdpRdp *rdp)
int	rdp_check_fds (rdpRdp *rdp)
BOOL	freerdp_get_stats (rdpRdp *rdp, UINT64 *inBytes, UINT64 *outBytes, UINT64 *inPackets, UINT64 *outPackets)
rdpRdp *	rdp_new (rdpContext *context)
static void	rdp_reset_free (rdpRdp *rdp)
BOOL	rdp_reset (rdpRdp *rdp)
void	rdp_free (rdpRdp *rdp)
BOOL	rdp_io_callback_set_event (rdpRdp *rdp, BOOL set)
const rdpTransportIo *	rdp_get_io_callbacks (rdpRdp *rdp)
BOOL	rdp_set_io_callbacks (rdpRdp *rdp, const rdpTransportIo *io_callbacks)
BOOL	rdp_set_io_callback_context (rdpRdp *rdp, void *usercontext)
void *	rdp_get_io_callback_context (rdpRdp *rdp)
const char *	rdp_finalize_flags_to_str (UINT32 flags, char *buffer, size_t size)
BOOL	rdp_finalize_reset_flags (rdpRdp *rdp, BOOL clearAll)
BOOL	rdp_finalize_set_flag (rdpRdp *rdp, UINT32 flag)
BOOL	rdp_finalize_is_flag_set (rdpRdp *rdp, UINT32 flag)
BOOL	rdp_reset_rc4_encrypt_keys (rdpRdp *rdp)
void	rdp_free_rc4_encrypt_keys (rdpRdp *rdp)
void	rdp_free_rc4_decrypt_keys (rdpRdp *rdp)
BOOL	rdp_reset_rc4_decrypt_keys (rdpRdp *rdp)
const char *	rdp_security_flag_string (UINT32 securityFlags, char *buffer, size_t size)

Variables
static const char *	DATA_PDU_TYPE_STRINGS [80]

Macro Definition Documentation

TAG

#define TAG   FREERDP_TAG("core.rdp")

FreeRDP: A Remote Desktop Protocol Implementation RDP Core

Copyright 2011 Marc-Andre Moreau marca.nosp@m.ndre.nosp@m..more.nosp@m.au@g.nosp@m.mail..nosp@m.com Copyright 2014 DI (FH) Martin Haimberger marti.nosp@m.n.ha.nosp@m.imber.nosp@m.ger@.nosp@m.thinc.nosp@m.ast..nosp@m.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.

Function Documentation

data_pdu_type_to_string()

const char* data_pdu_type_to_string

(

UINT8

type

)

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freerdp_get_stats()

BOOL freerdp_get_stats	(	rdpRdp *	rdp,
		UINT64 *	inBytes,
		UINT64 *	outBytes,
		UINT64 *	inPackets,
		UINT64 *	outPackets
	)

pdu_type_to_str()

const char* pdu_type_to_str

(

UINT16

pduType

)

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rdp_channel_send_packet()

BOOL rdp_channel_send_packet	(	rdpRdp *	rdp,
		UINT16	channelId,
		size_t	totalSize,
		UINT32	flags,
		const BYTE *	data,
		size_t	chunkSize
	)

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rdp_check_fds()

int rdp_check_fds

(

rdpRdp *

rdp

)

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rdp_data_pdu_init()

wStream* rdp_data_pdu_init

(

rdpRdp *

rdp

)

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rdp_decrypt()

BOOL rdp_decrypt	(	rdpRdp *	rdp,
		wStream *	s,
		UINT16 *	pLength,
		UINT16	securityFlags
	)

Decrypt an RDP packet.

Parameters

rdp	RDP module
s	stream
length	int

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rdp_finalize_flags_to_str()

const char* rdp_finalize_flags_to_str	(	UINT32	flags,
		char *	buffer,
		size_t	size
	)

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rdp_finalize_is_flag_set()

BOOL rdp_finalize_is_flag_set	(	rdpRdp *	rdp,
		UINT32	flag
	)

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rdp_finalize_reset_flags()

BOOL rdp_finalize_reset_flags	(	rdpRdp *	rdp,
		BOOL	clearAll
	)

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rdp_finalize_set_flag()

BOOL rdp_finalize_set_flag	(	rdpRdp *	rdp,
		UINT32	flag
	)

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rdp_free()

void rdp_free

(

rdpRdp *

rdp

)

Free RDP module.

Parameters

rdp	RDP module to be freed

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rdp_free_rc4_decrypt_keys()

void rdp_free_rc4_decrypt_keys

(

rdpRdp *

rdp

)

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rdp_free_rc4_encrypt_keys()

void rdp_free_rc4_encrypt_keys

(

rdpRdp *

rdp

)

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rdp_get_io_callback_context()

void* rdp_get_io_callback_context

(

rdpRdp *

rdp

)

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rdp_get_io_callbacks()

const rdpTransportIo* rdp_get_io_callbacks

(

rdpRdp *

rdp

)

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rdp_get_sec_bytes()

static UINT32 rdp_get_sec_bytes ( rdpRdp *  rdp, UINT16  sec_flags  )

static

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rdp_handle_sc_flags()

static state_run_t rdp_handle_sc_flags ( rdpRdp *  rdp, wStream *  s, UINT32  flag, CONNECTION_STATE  nextState  )

static

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rdp_io_callback_set_event()

BOOL rdp_io_callback_set_event	(	rdpRdp *	rdp,
		BOOL	set
	)

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rdp_message_channel_pdu_init()

wStream* rdp_message_channel_pdu_init

(

rdpRdp *

rdp

)

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rdp_new()

rdpRdp* rdp_new

(

rdpContext *

context

)

Instantiate new RDP module.

Returns

new RDP module

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rdp_read_flow_control_pdu()

BOOL rdp_read_flow_control_pdu ( wStream *  s, UINT16 *  type, UINT16 *  channel_id  )

static

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rdp_read_header()

BOOL rdp_read_header	(	rdpRdp *	rdp,
		wStream *	s,
		UINT16 *	length,
		UINT16 *	channelId
	)

Read an RDP packet header.

Parameters

rdp	rdp module
s	stream
length	RDP packet length
channel_id	channel id

Some servers like Windows Server 2008 R2 do not send the error info pdu when the user logs off like they should. Map DisconnectProviderUltimatum to a ERRINFO_LOGOFF_BY_USER when the errinfo code is ERRINFO_SUCCESS.

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rdp_read_security_header()

BOOL rdp_read_security_header	(	wStream *	s,
		UINT16 *	flags,
		UINT16 *	length
	)

Read RDP Security Header.
http://msdn.microsoft.com/en-us/library/cc240579/

Parameters

s	stream
flags	security flags

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rdp_read_share_control_header()

BOOL rdp_read_share_control_header	(	wStream *	s,
		UINT16 *	tpktLength,
		UINT16 *	remainingLength,
		UINT16 *	type,
		UINT16 *	channel_id
	)

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rdp_read_share_data_header()

BOOL rdp_read_share_data_header	(	wStream *	s,
		UINT16 *	length,
		BYTE *	type,
		UINT32 *	shareId,
		BYTE *	compressedType,
		UINT16 *	compressedLength
	)

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rdp_recv_callback()

state_run_t rdp_recv_callback	(	rdpTransport *	transport,
		wStream *	s,
		void *	extra
	)

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rdp_recv_callback_int()

static state_run_t rdp_recv_callback_int ( rdpTransport *  transport, wStream *  s, void *  extra  )

static

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rdp_recv_data_pdu()

state_run_t rdp_recv_data_pdu	(	rdpRdp *	rdp,
		wStream *	s
	)

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rdp_recv_fastpath_pdu()

static state_run_t rdp_recv_fastpath_pdu ( rdpRdp *  rdp, wStream *  s  )

static

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rdp_recv_message_channel_pdu()

state_run_t rdp_recv_message_channel_pdu	(	rdpRdp *	rdp,
		wStream *	s,
		UINT16	securityFlags
	)

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rdp_recv_monitor_layout_pdu()

static BOOL rdp_recv_monitor_layout_pdu ( rdpRdp *  rdp, wStream *  s  )

static

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rdp_recv_out_of_sequence_pdu()

state_run_t rdp_recv_out_of_sequence_pdu	(	rdpRdp *	rdp,
		wStream *	s
	)

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rdp_recv_pdu()

static state_run_t rdp_recv_pdu ( rdpRdp *  rdp, wStream *  s  )

static

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rdp_recv_server_auto_reconnect_status_pdu()

static BOOL rdp_recv_server_auto_reconnect_status_pdu ( rdpRdp *  rdp, wStream *  s  )

static

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rdp_recv_server_set_keyboard_ime_status_pdu()

static BOOL rdp_recv_server_set_keyboard_ime_status_pdu ( rdpRdp *  rdp, wStream *  s  )

static

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rdp_recv_server_set_keyboard_indicators_pdu()

static BOOL rdp_recv_server_set_keyboard_indicators_pdu ( rdpRdp *  rdp, wStream *  s  )

static

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rdp_recv_server_shutdown_denied_pdu()

static BOOL rdp_recv_server_shutdown_denied_pdu ( rdpRdp *  rdp, wStream *  s  )

static

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rdp_recv_server_status_info_pdu()

static BOOL rdp_recv_server_status_info_pdu ( rdpRdp *  rdp, wStream *  s  )

static

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rdp_recv_set_error_info_data_pdu()

static BOOL rdp_recv_set_error_info_data_pdu ( rdpRdp *  rdp, wStream *  s  )

static

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rdp_recv_tpkt_pdu()

static state_run_t rdp_recv_tpkt_pdu ( rdpRdp *  rdp, wStream *  s  )

static

Process an RDP packet.

Parameters

rdp	RDP module
s	stream

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rdp_reset()

BOOL rdp_reset

(

rdpRdp *

rdp

)

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rdp_reset_free()

static void rdp_reset_free ( rdpRdp *  rdp )

static

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rdp_reset_rc4_decrypt_keys()

BOOL rdp_reset_rc4_decrypt_keys

(

rdpRdp *

rdp

)

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rdp_reset_rc4_encrypt_keys()

BOOL rdp_reset_rc4_encrypt_keys

(

rdpRdp *

rdp

)

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rdp_security_flag_string()

const char* rdp_security_flag_string	(	UINT32	securityFlags,
		char *	buffer,
		size_t	size
	)

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rdp_security_stream_init()

static BOOL rdp_security_stream_init ( rdpRdp *  rdp, wStream *  s, BOOL  sec_header  )

static

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rdp_security_stream_out()

static BOOL rdp_security_stream_out ( rdpRdp *  rdp, wStream *  s, int  length, UINT32  sec_flags, UINT32 *  pad  )

static

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rdp_send()

BOOL rdp_send	(	rdpRdp *	rdp,
		wStream *	s,
		UINT16	channel_id
	)

Send an RDP packet.

Parameters

rdp	RDP module
s	stream
channel_id	channel id

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rdp_send_channel_data()

BOOL rdp_send_channel_data	(	rdpRdp *	rdp,
		UINT16	channelId,
		const BYTE *	data,
		size_t	size
	)

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rdp_send_data_pdu()

BOOL rdp_send_data_pdu	(	rdpRdp *	rdp,
		wStream *	s,
		BYTE	type,
		UINT16	channel_id
	)

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rdp_send_error_info()

BOOL rdp_send_error_info

(

rdpRdp *

rdp

)

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rdp_send_message_channel_pdu()

BOOL rdp_send_message_channel_pdu	(	rdpRdp *	rdp,
		wStream *	s,
		UINT16	sec_flags
	)

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rdp_send_pdu()

BOOL rdp_send_pdu	(	rdpRdp *	rdp,
		wStream *	s,
		UINT16	type,
		UINT16	channel_id
	)

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rdp_send_stream_init()

wStream* rdp_send_stream_init

(

rdpRdp *

rdp

)

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rdp_send_stream_pdu_init()

wStream* rdp_send_stream_pdu_init

(

rdpRdp *

rdp

)

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rdp_set_error_info()

BOOL rdp_set_error_info	(	rdpRdp *	rdp,
		UINT32	errorInfo
	)

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rdp_set_io_callback_context()

BOOL rdp_set_io_callback_context	(	rdpRdp *	rdp,
		void *	usercontext
	)

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rdp_set_io_callbacks()

BOOL rdp_set_io_callbacks	(	rdpRdp *	rdp,
		const rdpTransportIo *	io_callbacks
	)

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rdp_write_header()

BOOL rdp_write_header	(	rdpRdp *	rdp,
		wStream *	s,
		UINT16	length,
		UINT16	channelId
	)

Write an RDP packet header.

Parameters

rdp	rdp module
s	stream
length	RDP packet length
channel_id	channel id

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rdp_write_security_header()

BOOL rdp_write_security_header	(	wStream *	s,
		UINT16	flags
	)

Write RDP Security Header.
http://msdn.microsoft.com/en-us/library/cc240579/

Parameters

s	stream
flags	security flags

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rdp_write_share_control_header()

BOOL rdp_write_share_control_header ( wStream *  s, UINT16  length, UINT16  type, UINT16  channel_id  )

static

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rdp_write_share_data_header()

BOOL rdp_write_share_data_header ( wStream *  s, UINT16  length, BYTE  type, UINT32  share_id  )

static

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Variable Documentation

DATA_PDU_TYPE_STRINGS

const char* DATA_PDU_TYPE_STRINGS[80]

static