289 lines
9.1 KiB
C
289 lines
9.1 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* RDP Core
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*
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* Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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* Copyright 2014 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef FREERDP_LIB_CORE_RDP_H
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#define FREERDP_LIB_CORE_RDP_H
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#include <freerdp/config.h>
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#include "nla.h"
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#include "mcs.h"
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#include "tpkt.h"
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#include "../codec/bulk.h"
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#include "fastpath.h"
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#include "tpdu.h"
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#include "nego.h"
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#include "input.h"
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#include "update.h"
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#include "license.h"
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#include "errinfo.h"
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#include "autodetect.h"
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#include "heartbeat.h"
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#include "multitransport.h"
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#include "security.h"
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#include "transport.h"
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#include "connection.h"
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#include "redirection.h"
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#include "capabilities.h"
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#include "channels.h"
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#include <freerdp/freerdp.h>
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#include <freerdp/settings.h>
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#include <freerdp/log.h>
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#include <freerdp/api.h>
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#include <winpr/stream.h>
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#include <winpr/crypto.h>
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/* Security Header Flags */
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#define SEC_EXCHANGE_PKT 0x0001
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#define SEC_TRANSPORT_REQ 0x0002
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#define SEC_TRANSPORT_RSP 0x0004
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#define SEC_ENCRYPT 0x0008
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#define SEC_RESET_SEQNO 0x0010
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#define SEC_IGNORE_SEQNO 0x0020
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#define SEC_INFO_PKT 0x0040
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#define SEC_LICENSE_PKT 0x0080
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#define SEC_LICENSE_ENCRYPT_CS 0x0200
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#define SEC_LICENSE_ENCRYPT_SC 0x0200
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#define SEC_REDIRECTION_PKT 0x0400
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#define SEC_SECURE_CHECKSUM 0x0800
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#define SEC_AUTODETECT_REQ 0x1000
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#define SEC_AUTODETECT_RSP 0x2000
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#define SEC_HEARTBEAT 0x4000
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#define SEC_FLAGSHI_VALID 0x8000
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#define SEC_PKT_CS_MASK (SEC_EXCHANGE_PKT | SEC_INFO_PKT)
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#define SEC_PKT_SC_MASK (SEC_LICENSE_PKT | SEC_REDIRECTION_PKT)
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#define SEC_PKT_MASK (SEC_PKT_CS_MASK | SEC_PKT_SC_MASK)
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#define RDP_SECURITY_HEADER_LENGTH 4
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#define RDP_SHARE_CONTROL_HEADER_LENGTH 6
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#define RDP_SHARE_DATA_HEADER_LENGTH 12
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#define RDP_PACKET_HEADER_MAX_LENGTH (TPDU_DATA_LENGTH + MCS_SEND_DATA_HEADER_MAX_LENGTH)
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#define PDU_TYPE_DEMAND_ACTIVE 0x1
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#define PDU_TYPE_CONFIRM_ACTIVE 0x3
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#define PDU_TYPE_DEACTIVATE_ALL 0x6
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#define PDU_TYPE_DATA 0x7
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#define PDU_TYPE_SERVER_REDIRECTION 0xA
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#define PDU_TYPE_FLOW_TEST 0x41
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#define PDU_TYPE_FLOW_RESPONSE 0x42
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#define PDU_TYPE_FLOW_STOP 0x43
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typedef enum
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{
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FINALIZE_SC_SYNCHRONIZE_PDU = 0x01,
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FINALIZE_SC_CONTROL_COOPERATE_PDU = 0x02,
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FINALIZE_SC_CONTROL_GRANTED_PDU = 0x04,
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FINALIZE_SC_FONT_MAP_PDU = 0x08,
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FINALIZE_CS_SYNCHRONIZE_PDU = 0x10,
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FINALIZE_CS_CONTROL_COOPERATE_PDU = 0x20,
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FINALIZE_CS_CONTROL_REQUEST_PDU = 0x40,
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FINALIZE_CS_PERSISTENT_KEY_LIST_PDU = 0x80,
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FINALIZE_CS_FONT_LIST_PDU = 0x100,
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FINALIZE_DEACTIVATE_REACTIVATE = 0x200
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} rdpFinalizePduType;
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/* Data PDU Types */
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typedef enum
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{
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DATA_PDU_TYPE_UPDATE = 0x02,
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DATA_PDU_TYPE_CONTROL = 0x14,
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DATA_PDU_TYPE_POINTER = 0x1B,
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DATA_PDU_TYPE_INPUT = 0x1C,
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DATA_PDU_TYPE_SYNCHRONIZE = 0x1F,
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DATA_PDU_TYPE_REFRESH_RECT = 0x21,
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DATA_PDU_TYPE_PLAY_SOUND = 0x22,
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DATA_PDU_TYPE_SUPPRESS_OUTPUT = 0x23,
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DATA_PDU_TYPE_SHUTDOWN_REQUEST = 0x24,
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DATA_PDU_TYPE_SHUTDOWN_DENIED = 0x25,
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DATA_PDU_TYPE_SAVE_SESSION_INFO = 0x26,
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DATA_PDU_TYPE_FONT_LIST = 0x27,
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DATA_PDU_TYPE_FONT_MAP = 0x28,
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DATA_PDU_TYPE_SET_KEYBOARD_INDICATORS = 0x29,
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DATA_PDU_TYPE_BITMAP_CACHE_PERSISTENT_LIST = 0x2B,
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DATA_PDU_TYPE_BITMAP_CACHE_ERROR = 0x2C,
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DATA_PDU_TYPE_SET_KEYBOARD_IME_STATUS = 0x2D,
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DATA_PDU_TYPE_OFFSCREEN_CACHE_ERROR = 0x2E,
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DATA_PDU_TYPE_SET_ERROR_INFO = 0x2F,
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DATA_PDU_TYPE_DRAW_NINEGRID_ERROR = 0x30,
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DATA_PDU_TYPE_DRAW_GDIPLUS_ERROR = 0x31,
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DATA_PDU_TYPE_ARC_STATUS = 0x32,
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DATA_PDU_TYPE_STATUS_INFO = 0x36,
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DATA_PDU_TYPE_MONITOR_LAYOUT = 0x37,
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DATA_PDU_TYPE_FRAME_ACKNOWLEDGE = 0x38
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} rdpPduType;
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/* Stream Identifiers */
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#define STREAM_UNDEFINED 0x00
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#define STREAM_LOW 0x01
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#define STREAM_MED 0x02
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#define STREAM_HI 0x04
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struct rdp_rdp
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{
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CONNECTION_STATE state;
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rdpContext* context;
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rdpNla* nla;
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rdpMcs* mcs;
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rdpNego* nego;
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rdpBulk* bulk;
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rdpInput* input;
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rdpUpdate* update;
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rdpFastPath* fastpath;
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rdpLicense* license;
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rdpRedirection* redirection;
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rdpSettings* settings;
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rdpSettings* originalSettings;
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rdpTransport* transport;
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rdpAutoDetect* autodetect;
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rdpHeartbeat* heartbeat;
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rdpMultitransport* multitransport;
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WINPR_RC4_CTX* rc4_decrypt_key;
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int decrypt_use_count;
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int decrypt_checksum_use_count;
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WINPR_RC4_CTX* rc4_encrypt_key;
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int encrypt_use_count;
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int encrypt_checksum_use_count;
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WINPR_CIPHER_CTX* fips_encrypt;
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WINPR_CIPHER_CTX* fips_decrypt;
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UINT32 sec_flags;
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BOOL do_crypt;
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BOOL do_crypt_license;
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BOOL do_secure_checksum;
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BYTE sign_key[16];
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BYTE decrypt_key[16];
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BYTE encrypt_key[16];
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BYTE decrypt_update_key[16];
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BYTE encrypt_update_key[16];
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size_t rc4_key_len;
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BYTE fips_sign_key[20];
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BYTE fips_encrypt_key[24];
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BYTE fips_decrypt_key[24];
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UINT32 errorInfo;
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UINT32 finalize_sc_pdus;
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BOOL resendFocus;
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UINT64 inBytes;
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UINT64 inPackets;
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UINT64 outBytes;
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UINT64 outPackets;
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CRITICAL_SECTION critical;
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rdpTransportIo* io;
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void* ioContext;
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HANDLE abortEvent;
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wPubSub* pubSub;
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BOOL was_deactivated;
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UINT32 deactivated_width;
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UINT32 deactivated_height;
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};
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FREERDP_LOCAL BOOL rdp_read_security_header(wStream* s, UINT16* flags, UINT16* length);
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FREERDP_LOCAL BOOL rdp_write_security_header(wStream* s, UINT16 flags);
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FREERDP_LOCAL BOOL rdp_read_share_control_header(wStream* s, UINT16* tpktLength,
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UINT16* remainingLength, UINT16* type,
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UINT16* channel_id);
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FREERDP_LOCAL BOOL rdp_read_share_data_header(wStream* s, UINT16* length, BYTE* type,
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UINT32* share_id, BYTE* compressed_type,
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UINT16* compressed_len);
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FREERDP_LOCAL wStream* rdp_send_stream_init(rdpRdp* rdp);
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FREERDP_LOCAL wStream* rdp_send_stream_pdu_init(rdpRdp* rdp);
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FREERDP_LOCAL BOOL rdp_read_header(rdpRdp* rdp, wStream* s, UINT16* length, UINT16* channel_id);
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FREERDP_LOCAL BOOL rdp_write_header(rdpRdp* rdp, wStream* s, UINT16 length, UINT16 channel_id);
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FREERDP_LOCAL BOOL rdp_send_pdu(rdpRdp* rdp, wStream* s, UINT16 type, UINT16 channel_id);
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FREERDP_LOCAL wStream* rdp_data_pdu_init(rdpRdp* rdp);
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FREERDP_LOCAL BOOL rdp_send_data_pdu(rdpRdp* rdp, wStream* s, BYTE type, UINT16 channel_id);
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FREERDP_LOCAL state_run_t rdp_recv_data_pdu(rdpRdp* rdp, wStream* s);
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FREERDP_LOCAL BOOL rdp_send(rdpRdp* rdp, wStream* s, UINT16 channelId);
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FREERDP_LOCAL BOOL rdp_send_channel_data(rdpRdp* rdp, UINT16 channelId, const BYTE* data,
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size_t size);
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FREERDP_LOCAL BOOL rdp_channel_send_packet(rdpRdp* rdp, UINT16 channelId, size_t totalSize,
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UINT32 flags, const BYTE* data, size_t chunkSize);
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FREERDP_LOCAL wStream* rdp_message_channel_pdu_init(rdpRdp* rdp);
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FREERDP_LOCAL BOOL rdp_send_message_channel_pdu(rdpRdp* rdp, wStream* s, UINT16 sec_flags);
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FREERDP_LOCAL state_run_t rdp_recv_message_channel_pdu(rdpRdp* rdp, wStream* s,
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UINT16 securityFlags);
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FREERDP_LOCAL state_run_t rdp_recv_out_of_sequence_pdu(rdpRdp* rdp, wStream* s);
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FREERDP_LOCAL state_run_t rdp_recv_callback(rdpTransport* transport, wStream* s, void* extra);
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FREERDP_LOCAL int rdp_check_fds(rdpRdp* rdp);
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FREERDP_LOCAL rdpRdp* rdp_new(rdpContext* context);
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FREERDP_LOCAL BOOL rdp_reset(rdpRdp* rdp);
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FREERDP_LOCAL void rdp_free(rdpRdp* rdp);
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FREERDP_LOCAL BOOL rdp_io_callback_set_event(rdpRdp* rdp, BOOL reset);
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FREERDP_LOCAL const rdpTransportIo* rdp_get_io_callbacks(rdpRdp* rdp);
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FREERDP_LOCAL BOOL rdp_set_io_callbacks(rdpRdp* rdp, const rdpTransportIo* io_callbacks);
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FREERDP_LOCAL BOOL rdp_set_io_callback_context(rdpRdp* rdp, void* usercontext);
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FREERDP_LOCAL void* rdp_get_io_callback_context(rdpRdp* rdp);
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#define RDP_TAG FREERDP_TAG("core.rdp")
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#ifdef WITH_DEBUG_RDP
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#define DEBUG_RDP(...) WLog_DBG(RDP_TAG, __VA_ARGS__)
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#else
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#define DEBUG_RDP(...) \
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do \
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{ \
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} while (0)
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#endif
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const char* data_pdu_type_to_string(UINT8 type);
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const char* pdu_type_to_str(UINT16 pduType);
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BOOL rdp_finalize_reset_flags(rdpRdp* rdp, BOOL clearAll);
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BOOL rdp_finalize_set_flag(rdpRdp* rdp, UINT32 flag);
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BOOL rdp_finalize_is_flag_set(rdpRdp* rdp, UINT32 flag);
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const char* rdp_finalize_flags_to_str(UINT32 flags, char* buffer, size_t size);
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BOOL rdp_decrypt(rdpRdp* rdp, wStream* s, UINT16* pLength, UINT16 securityFlags);
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BOOL rdp_set_error_info(rdpRdp* rdp, UINT32 errorInfo);
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BOOL rdp_send_error_info(rdpRdp* rdp);
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void rdp_free_rc4_encrypt_keys(rdpRdp* rdp);
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BOOL rdp_reset_rc4_encrypt_keys(rdpRdp* rdp);
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void rdp_free_rc4_decrypt_keys(rdpRdp* rdp);
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BOOL rdp_reset_rc4_decrypt_keys(rdpRdp* rdp);
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const char* rdp_security_flag_string(UINT32 securityFlags, char* buffer, size_t size);
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#endif /* FREERDP_LIB_CORE_RDP_H */
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