#include "tcp.h"
#include "nla.h"
#include "rdstls.h"
#include "gateway/tsg.h"
#include <winpr/sspi.h>
#include <winpr/wlog.h>
#include <winpr/synch.h>
#include <winpr/thread.h>
#include <winpr/stream.h>
#include <winpr/collections.h>
#include <freerdp/api.h>
#include <time.h>
#include <freerdp/types.h>
#include <freerdp/settings.h>
#include <freerdp/transport_io.h>
#include "state.h"

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Typedefs
typedef state_run_t(*	TransportRecv) (rdpTransport transport, wStream stream, void *extra)

Enumerations
enum	TRANSPORT_LAYER { TRANSPORT_LAYER_TCP , TRANSPORT_LAYER_TLS , TRANSPORT_LAYER_NAMEDPIPE , TRANSPORT_LAYER_TSG , TRANSPORT_LAYER_TSG_TLS , TRANSPORT_LAYER_CLOSED }

Functions
FREERDP_LOCAL wStream *	transport_send_stream_init (rdpTransport *transport, size_t size)

FREERDP_LOCAL BOOL	transport_connect (rdpTransport transport, const char hostname, UINT16 port, DWORD timeout)

FREERDP_LOCAL BOOL	transport_connect_childsession (rdpTransport *transport)

FREERDP_LOCAL BOOL	transport_attach (rdpTransport *transport, int sockfd)
	Attach a socket to the transport layer. More...

FREERDP_LOCAL BOOL	transport_attach_layer (rdpTransport transport, rdpTransportLayer layer)
	Attach a transport layer. More...

FREERDP_LOCAL BOOL	transport_disconnect (rdpTransport *transport)

FREERDP_LOCAL BOOL	transport_connect_rdp (rdpTransport *transport)

FREERDP_LOCAL BOOL	transport_connect_tls (rdpTransport *transport)

FREERDP_LOCAL BOOL	transport_connect_nla (rdpTransport *transport, BOOL earlyUserAuth)

FREERDP_LOCAL BOOL	transport_connect_rdstls (rdpTransport *transport)

FREERDP_LOCAL BOOL	transport_connect_aad (rdpTransport *transport)

FREERDP_LOCAL BOOL	transport_accept_rdp (rdpTransport *transport)

FREERDP_LOCAL BOOL	transport_accept_tls (rdpTransport *transport)

FREERDP_LOCAL BOOL	transport_accept_nla (rdpTransport *transport)

FREERDP_LOCAL BOOL	transport_accept_rdstls (rdpTransport *transport)

FREERDP_LOCAL int	transport_read_pdu (rdpTransport transport, wStream s)
	Try to read a complete PDU (NLA, fast-path or tpkt) from the underlying transport. More...

FREERDP_LOCAL int	transport_write (rdpTransport transport, wStream s)

FREERDP_LOCAL BOOL	transport_get_public_key (rdpTransport transport, const BYTE data, DWORD length)

FREERDP_LOCAL int	transport_check_fds (rdpTransport *transport)

FREERDP_LOCAL DWORD	transport_get_event_handles (rdpTransport transport, HANDLE events, DWORD nCount)

FREERDP_LOCAL HANDLE	transport_get_front_bio (rdpTransport *transport)

FREERDP_LOCAL BOOL	transport_set_blocking_mode (rdpTransport *transport, BOOL blocking)

FREERDP_LOCAL void	transport_set_gateway_enabled (rdpTransport *transport, BOOL GatewayEnabled)

FREERDP_LOCAL void	transport_set_nla_mode (rdpTransport *transport, BOOL NlaMode)

FREERDP_LOCAL void	transport_set_rdstls_mode (rdpTransport *transport, BOOL RdstlsMode)

FREERDP_LOCAL void	transport_set_aad_mode (rdpTransport *transport, BOOL AadMode)

FREERDP_LOCAL BOOL	transport_is_write_blocked (rdpTransport *transport)

FREERDP_LOCAL int	transport_drain_output_buffer (rdpTransport *transport)

FREERDP_LOCAL BOOL	transport_io_callback_set_event (rdpTransport *transport, BOOL set)

FREERDP_LOCAL const rdpTransportIo *	transport_get_io_callbacks (rdpTransport *transport)

FREERDP_LOCAL BOOL	transport_set_io_callbacks (rdpTransport transport, const rdpTransportIo io_callbacks)

FREERDP_LOCAL BOOL	transport_set_nla (rdpTransport transport, rdpNla nla)

FREERDP_LOCAL rdpNla *	transport_get_nla (rdpTransport *transport)

FREERDP_LOCAL BOOL	transport_set_tls (rdpTransport transport, rdpTls tls)

FREERDP_LOCAL rdpTls *	transport_get_tls (rdpTransport *transport)

FREERDP_LOCAL BOOL	transport_set_tsg (rdpTransport transport, rdpTsg tsg)

FREERDP_LOCAL rdpTsg *	transport_get_tsg (rdpTransport *transport)

FREERDP_LOCAL wStream *	transport_take_from_pool (rdpTransport *transport, size_t size)

FREERDP_LOCAL ULONG	transport_get_bytes_sent (rdpTransport *transport, BOOL resetCount)

FREERDP_LOCAL BOOL	transport_have_more_bytes_to_read (rdpTransport *transport)

FREERDP_LOCAL TRANSPORT_LAYER	transport_get_layer (rdpTransport *transport)

FREERDP_LOCAL BOOL	transport_set_layer (rdpTransport *transport, TRANSPORT_LAYER layer)

FREERDP_LOCAL BOOL	transport_get_blocking (rdpTransport *transport)

FREERDP_LOCAL BOOL	transport_set_blocking (rdpTransport *transport, BOOL blocking)

FREERDP_LOCAL BOOL	transport_set_connected_event (rdpTransport *transport)

FREERDP_LOCAL BOOL	transport_set_recv_callbacks (rdpTransport transport, TransportRecv recv, void extra)

FREERDP_LOCAL int	transport_tcp_connect (rdpTransport transport, const char hostname, int port, DWORD timeout)

FREERDP_LOCAL rdpTransportLayer *	transport_connect_layer (rdpTransport transport, const char hostname, int port, DWORD timeout)

FREERDP_LOCAL void	transport_free (rdpTransport *transport)

FREERDP_LOCAL rdpTransport *	transport_new (rdpContext *context)

FREERDP_LOCAL void	transport_set_early_user_auth_mode (rdpTransport *transport, BOOL EUAMode)

FREERDP_LOCAL BIO_METHOD *	BIO_s_transport_layer (void)

Typedef Documentation

◆ TransportRecv

typedef state_run_t(* TransportRecv) (rdpTransport *transport, wStream *stream, void *extra)

Enumeration Type Documentation

◆ TRANSPORT_LAYER

enum TRANSPORT_LAYER

FreeRDP: A Remote Desktop Protocol Implementation Network Transport Layer

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.

Enumerator
TRANSPORT_LAYER_TCP
TRANSPORT_LAYER_TLS
TRANSPORT_LAYER_NAMEDPIPE
TRANSPORT_LAYER_TSG
TRANSPORT_LAYER_TSG_TLS
TRANSPORT_LAYER_CLOSED

Function Documentation

◆ BIO_s_transport_layer()

FREERDP_LOCAL BIO_METHOD* BIO_s_transport_layer ( void )

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◆ transport_accept_nla()

FREERDP_LOCAL BOOL transport_accept_nla ( rdpTransport * transport )

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◆ transport_accept_rdp()

FREERDP_LOCAL BOOL transport_accept_rdp ( rdpTransport * transport )

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◆ transport_accept_rdstls()

FREERDP_LOCAL BOOL transport_accept_rdstls ( rdpTransport * transport )

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◆ transport_accept_tls()

FREERDP_LOCAL BOOL transport_accept_tls ( rdpTransport * transport )

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◆ transport_attach()

FREERDP_LOCAL BOOL transport_attach	(	rdpTransport *	transport,
		int	sockfd
	)

Attach a socket to the transport layer.

!

The ownership of the socket provided by sockfd is taken if and only if the function is successful. In such a case the caller must no longer close or otherwise use the socket. If the function fails it is up to the caller to close the socket.

The implementation can be overridden by transport_set_io_callbacks(rdpTransportIo::TransportAttach)

Parameters

transport	The transport instance to attach the socket to
sockfd	The socket to attach to the transport

Returns: TRUE in case of success, FALSE otherwise.

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◆ transport_attach_layer()

FREERDP_LOCAL BOOL transport_attach_layer	(	rdpTransport *	transport,
		rdpTransportLayer *	layer
	)

Attach a transport layer.

!

The ownership of the transport layer provided by layer is taken if and only if the function is successful. In such a case the caller must no longer free or otherwise use the layer. If the function fails it is up to the caller to free the layer.

The implementation can be overridden by transport_set_io_callbacks(rdpTransportIo::AttachLayer)

Parameters

transport	The transport instance to attach the socket to
layer	The layer to attach to the transport

Returns: TRUE in case of success, FALSE otherwise.

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◆ transport_check_fds()

FREERDP_LOCAL int transport_check_fds ( rdpTransport * transport )

Note: transport_read_pdu tries to read one PDU from the transport layer. The ReceiveBuffer might have a position > 0 in case of a non blocking transport. If transport_read_pdu returns 0 the pdu couldn't be read at this point. Note that transport->ReceiveBuffer is replaced after each iteration of this loop with a fresh stream instance from a pool.

status: -1: error 0: success 1: redirection

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◆ transport_connect()

FREERDP_LOCAL BOOL transport_connect	(	rdpTransport *	transport,
		const char *	hostname,
		UINT16	port,
		DWORD	timeout
	)

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◆ transport_connect_aad()

FREERDP_LOCAL BOOL transport_connect_aad ( rdpTransport * transport )

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◆ transport_connect_childsession()

FREERDP_LOCAL BOOL transport_connect_childsession ( rdpTransport * transport )

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◆ transport_connect_layer()

FREERDP_LOCAL rdpTransportLayer* transport_connect_layer	(	rdpTransport *	transport,
		const char *	hostname,
		int	port,
		DWORD	timeout
	)

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◆ transport_connect_nla()

FREERDP_LOCAL BOOL transport_connect_nla	(	rdpTransport *	transport,
		BOOL	earlyUserAuth
	)

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◆ transport_connect_rdp()

FREERDP_LOCAL BOOL transport_connect_rdp ( rdpTransport * transport )

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◆ transport_connect_rdstls()

FREERDP_LOCAL BOOL transport_connect_rdstls ( rdpTransport * transport )

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◆ transport_connect_tls()

FREERDP_LOCAL BOOL transport_connect_tls ( rdpTransport * transport )

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◆ transport_disconnect()

FREERDP_LOCAL BOOL transport_disconnect ( rdpTransport * transport )

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◆ transport_drain_output_buffer()

FREERDP_LOCAL int transport_drain_output_buffer ( rdpTransport * transport )

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◆ transport_free()

FREERDP_LOCAL void transport_free ( rdpTransport * transport )

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◆ transport_get_blocking()

FREERDP_LOCAL BOOL transport_get_blocking ( rdpTransport * transport )

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◆ transport_get_bytes_sent()

FREERDP_LOCAL ULONG transport_get_bytes_sent	(	rdpTransport *	transport,
		BOOL	resetCount
	)

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◆ transport_get_event_handles()

FREERDP_LOCAL DWORD transport_get_event_handles	(	rdpTransport *	transport,
		HANDLE *	events,
		DWORD	nCount
	)

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◆ transport_get_front_bio()

FREERDP_LOCAL HANDLE transport_get_front_bio ( rdpTransport * transport )

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◆ transport_get_io_callbacks()

FREERDP_LOCAL const rdpTransportIo* transport_get_io_callbacks ( rdpTransport * transport )

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◆ transport_get_layer()

FREERDP_LOCAL TRANSPORT_LAYER transport_get_layer ( rdpTransport * transport )

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◆ transport_get_nla()

FREERDP_LOCAL rdpNla* transport_get_nla ( rdpTransport * transport )

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◆ transport_get_public_key()

FREERDP_LOCAL BOOL transport_get_public_key	(	rdpTransport *	transport,
		const BYTE **	data,
		DWORD *	length
	)

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◆ transport_get_tls()

FREERDP_LOCAL rdpTls* transport_get_tls ( rdpTransport * transport )

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◆ transport_get_tsg()

FREERDP_LOCAL rdpTsg* transport_get_tsg ( rdpTransport * transport )

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◆ transport_have_more_bytes_to_read()

FREERDP_LOCAL BOOL transport_have_more_bytes_to_read ( rdpTransport * transport )

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◆ transport_io_callback_set_event()

FREERDP_LOCAL BOOL transport_io_callback_set_event	(	rdpTransport *	transport,
		BOOL	set
	)

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◆ transport_is_write_blocked()

FREERDP_LOCAL BOOL transport_is_write_blocked ( rdpTransport * transport )

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◆ transport_new()

FREERDP_LOCAL rdpTransport* transport_new ( rdpContext * context )

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◆ transport_read_pdu()

FREERDP_LOCAL int transport_read_pdu	(	rdpTransport *	transport,
		wStream *	s
	)

Try to read a complete PDU (NLA, fast-path or tpkt) from the underlying transport.

If possible a complete PDU is read, in case of non blocking transport this might not succeed. Except in case of an error the passed stream will point to the last byte read (correct position). When the pdu read is completed the stream is sealed and the pointer set to 0

Parameters