/**
* FreeRDP: A Remote Desktop Protocol Implementation
* RDP Core
*
* Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>
* Copyright 2014 DI (FH) Martin Haimberger <martin.haimberger@thincast.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.
*/
#ifndef FREERDP_LIB_CORE_RDP_H
#define FREERDP_LIB_CORE_RDP_H
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "nla.h"
#include "mcs.h"
#include "tpkt.h"
#include "bulk.h"
#include "fastpath.h"
#include "tpdu.h"
#include "nego.h"
#include "input.h"
#include "update.h"
#include "license.h"
#include "errinfo.h"
#include "autodetect.h"
#include "heartbeat.h"
#include "multitransport.h"
#include "security.h"
#include "transport.h"
#include "connection.h"
#include "redirection.h"
#include "capabilities.h"
#include "channels.h"
#include <freerdp/freerdp.h>
#include <freerdp/settings.h>
#include <freerdp/log.h>
#include <freerdp/api.h>
#include <winpr/stream.h>
#include <winpr/crypto.h>
/* Security Header Flags */
#define SEC_EXCHANGE_PKT 0x0001
#define SEC_TRANSPORT_REQ 0x0002
#define SEC_TRANSPORT_RSP 0x0004
#define SEC_ENCRYPT 0x0008
#define SEC_RESET_SEQNO 0x0010
#define SEC_IGNORE_SEQNO 0x0020
#define SEC_INFO_PKT 0x0040
#define SEC_LICENSE_PKT 0x0080
#define SEC_LICENSE_ENCRYPT_CS 0x0200
#define SEC_LICENSE_ENCRYPT_SC 0x0200
#define SEC_REDIRECTION_PKT 0x0400
#define SEC_SECURE_CHECKSUM 0x0800
#define SEC_AUTODETECT_REQ 0x1000
#define SEC_AUTODETECT_RSP 0x2000
#define SEC_HEARTBEAT 0x4000
#define SEC_FLAGSHI_VALID 0x8000
#define SEC_PKT_CS_MASK (SEC_EXCHANGE_PKT | SEC_INFO_PKT)
#define SEC_PKT_SC_MASK (SEC_LICENSE_PKT | SEC_REDIRECTION_PKT)
#define SEC_PKT_MASK (SEC_PKT_CS_MASK | SEC_PKT_SC_MASK)
#define RDP_SECURITY_HEADER_LENGTH 4
#define RDP_SHARE_CONTROL_HEADER_LENGTH 6
#define RDP_SHARE_DATA_HEADER_LENGTH 12
#define RDP_PACKET_HEADER_MAX_LENGTH (TPDU_DATA_LENGTH + MCS_SEND_DATA_HEADER_MAX_LENGTH)
#define PDU_TYPE_DEMAND_ACTIVE 0x1
#define PDU_TYPE_CONFIRM_ACTIVE 0x3
#define PDU_TYPE_DEACTIVATE_ALL 0x6
#define PDU_TYPE_DATA 0x7
#define PDU_TYPE_SERVER_REDIRECTION 0xA
#define PDU_TYPE_FLOW_TEST 0x41
#define PDU_TYPE_FLOW_RESPONSE 0x42
#define PDU_TYPE_FLOW_STOP 0x43
#define FINALIZE_SC_SYNCHRONIZE_PDU 0x01
#define FINALIZE_SC_CONTROL_COOPERATE_PDU 0x02
#define FINALIZE_SC_CONTROL_GRANTED_PDU 0x04
#define FINALIZE_SC_FONT_MAP_PDU 0x08
#define FINALIZE_SC_COMPLETE 0x0F
/* Data PDU Types */
#define DATA_PDU_TYPE_UPDATE 0x02
#define DATA_PDU_TYPE_CONTROL 0x14
#define DATA_PDU_TYPE_POINTER 0x1B
#define DATA_PDU_TYPE_INPUT 0x1C
#define DATA_PDU_TYPE_SYNCHRONIZE 0x1F
#define DATA_PDU_TYPE_REFRESH_RECT 0x21
#define DATA_PDU_TYPE_PLAY_SOUND 0x22
#define DATA_PDU_TYPE_SUPPRESS_OUTPUT 0x23
#define DATA_PDU_TYPE_SHUTDOWN_REQUEST 0x24
#define DATA_PDU_TYPE_SHUTDOWN_DENIED 0x25
#define DATA_PDU_TYPE_SAVE_SESSION_INFO 0x26
#define DATA_PDU_TYPE_FONT_LIST 0x27
#define DATA_PDU_TYPE_FONT_MAP 0x28
#define DATA_PDU_TYPE_SET_KEYBOARD_INDICATORS 0x29
#define DATA_PDU_TYPE_BITMAP_CACHE_PERSISTENT_LIST 0x2B
#define DATA_PDU_TYPE_BITMAP_CACHE_ERROR 0x2C
#define DATA_PDU_TYPE_SET_KEYBOARD_IME_STATUS 0x2D
#define DATA_PDU_TYPE_OFFSCREEN_CACHE_ERROR 0x2E
#define DATA_PDU_TYPE_SET_ERROR_INFO 0x2F
#define DATA_PDU_TYPE_DRAW_NINEGRID_ERROR 0x30
#define DATA_PDU_TYPE_DRAW_GDIPLUS_ERROR 0x31
#define DATA_PDU_TYPE_ARC_STATUS 0x32
#define DATA_PDU_TYPE_STATUS_INFO 0x36
#define DATA_PDU_TYPE_MONITOR_LAYOUT 0x37
#define DATA_PDU_TYPE_FRAME_ACKNOWLEDGE 0x38
/* Stream Identifiers */
#define STREAM_UNDEFINED 0x00
#define STREAM_LOW 0x01
#define STREAM_MED 0x02
#define STREAM_HI 0x04
struct rdp_rdp
{
int state;
freerdp* instance;
rdpContext* context;
rdpNla* nla;
rdpMcs* mcs;
rdpNego* nego;
rdpBulk* bulk;
rdpInput* input;
rdpUpdate* update;
rdpFastPath* fastpath;
rdpLicense* license;
rdpRedirection* redirection;
rdpSettings* settings;
rdpTransport* transport;
rdpAutoDetect* autodetect;
rdpHeartbeat* heartbeat;
rdpMultitransport* multitransport;
WINPR_RC4_CTX* rc4_decrypt_key;
int decrypt_use_count;
int decrypt_checksum_use_count;
WINPR_RC4_CTX* rc4_encrypt_key;
int encrypt_use_count;
int encrypt_checksum_use_count;
WINPR_CIPHER_CTX* fips_encrypt;
WINPR_CIPHER_CTX* fips_decrypt;
UINT32 sec_flags;
BOOL do_crypt;
BOOL do_crypt_license;
BOOL do_secure_checksum;
BYTE sign_key[16];
BYTE decrypt_key[16];
BYTE encrypt_key[16];
BYTE decrypt_update_key[16];
BYTE encrypt_update_key[16];
int rc4_key_len;
BYTE fips_sign_key[20];
BYTE fips_encrypt_key[24];
BYTE fips_decrypt_key[24];
UINT32 errorInfo;
UINT32 finalize_sc_pdus;
BOOL resendFocus;
BOOL deactivation_reactivation;
BOOL AwaitCapabilities;
};
FREERDP_LOCAL BOOL rdp_read_security_header(wStream* s, UINT16* flags, UINT16* length);
FREERDP_LOCAL void rdp_write_security_header(wStream* s, UINT16 flags);
FREERDP_LOCAL BOOL rdp_read_share_control_header(wStream* s, UINT16* length,
UINT16* type, UINT16* channel_id);
FREERDP_LOCAL void rdp_write_share_control_header(wStream* s, UINT16 length,
UINT16 type, UINT16 channel_id);
FREERDP_LOCAL BOOL rdp_read_share_data_header(wStream* s, UINT16* length,
BYTE* type, UINT32* share_id,
BYTE* compressed_type, UINT16* compressed_len);
FREERDP_LOCAL void rdp_write_share_data_header(wStream* s, UINT16 length,
BYTE type, UINT32 share_id);
FREERDP_LOCAL wStream* rdp_send_stream_init(rdpRdp* rdp);
FREERDP_LOCAL wStream* rdp_send_stream_pdu_init(rdpRdp* rdp);
FREERDP_LOCAL BOOL rdp_read_header(rdpRdp* rdp, wStream* s, UINT16* length,
UINT16* channel_id);
FREERDP_LOCAL void rdp_write_header(rdpRdp* rdp, wStream* s, UINT16 length,
UINT16 channel_id);
FREERDP_LOCAL BOOL rdp_send_pdu(rdpRdp* rdp, wStream* s, UINT16 type,
UINT16 channel_id);
FREERDP_LOCAL wStream* rdp_data_pdu_init(rdpRdp* rdp);
FREERDP_LOCAL BOOL rdp_send_data_pdu(rdpRdp* rdp, wStream* s, BYTE type,
UINT16 channel_id);
FREERDP_LOCAL int rdp_recv_data_pdu(rdpRdp* rdp, wStream* s);
FREERDP_LOCAL BOOL rdp_send(rdpRdp* rdp, wStream* s, UINT16 channelId);
FREERDP_LOCAL int rdp_send_channel_data(rdpRdp* rdp, UINT16 channelId,
const BYTE* data, int size);
FREERDP_LOCAL wStream* rdp_message_channel_pdu_init(rdpRdp* rdp);
FREERDP_LOCAL BOOL rdp_send_message_channel_pdu(rdpRdp* rdp, wStream* s,
UINT16 sec_flags);
FREERDP_LOCAL int rdp_recv_message_channel_pdu(rdpRdp* rdp, wStream* s,
UINT16 securityFlags);
FREERDP_LOCAL int rdp_recv_out_of_sequence_pdu(rdpRdp* rdp, wStream* s);
FREERDP_LOCAL void rdp_read_flow_control_pdu(wStream* s, UINT16* type);
FREERDP_LOCAL BOOL rdp_write_monitor_layout_pdu(wStream* s, UINT32 monitorCount,
const rdpMonitor* monitorDefArray);
FREERDP_LOCAL int rdp_recv_callback(rdpTransport* transport, wStream* s,
void* extra);
FREERDP_LOCAL int rdp_check_fds(rdpRdp* rdp);
FREERDP_LOCAL rdpRdp* rdp_new(rdpContext* context);
FREERDP_LOCAL void rdp_reset(rdpRdp* rdp);
FREERDP_LOCAL void rdp_free(rdpRdp* rdp);
#define RDP_TAG FREERDP_TAG("core.rdp")
#ifdef WITH_DEBUG_RDP
#define DEBUG_RDP(...) WLog_DBG(RDP_TAG, __VA_ARGS__)
extern const char* DATA_PDU_TYPE_STRINGS[80];
#else
#define DEBUG_RDP(...) do { } while (0)
#endif
BOOL rdp_decrypt(rdpRdp* rdp, wStream* s, INT32 length, UINT16 securityFlags);
BOOL rdp_set_error_info(rdpRdp* rdp, UINT32 errorInfo);
BOOL rdp_send_error_info(rdpRdp* rdp);
#endif /* FREERDP_LIB_CORE_RDP_H */