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/*
 * quic_analyze_entry.h
 *
 *  Created on: 2019��4��2��
 *      Author: root
 */

#ifndef SRC_GQUIC_GQUIC_PROCESS_H_
#define SRC_GQUIC_GQUIC_PROCESS_H_

#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>

#include "quic.h"

#define QUIC_LONG_HEADER_MASK	0x80

#define	GQUIC_VERSION_44to48_CID_MASK	0x0F
#define	GQUIC_VERSION_44to48_PKN_LEN_MASK	0x03
#define	GQUIC_VERSION_0to43_PKN_LEN_MASK	0x30                

#define GQUIC_PUBLIC_FLAG_VERSION	0x01
#define GQUIC_PUBLIC_FLAG_RST		0x02
#define GQUIC_PUBLIC_FLAG_NONCE		0x04
#define	GQUIC_PUBLIC_FLAG_CID		0x08
#define	GQUIC_PUBLIC_FLAG_PKT_NUM	0x30

//GQIIC  Frame type                                     
#define GQUIC_SPECIAL_FRAME_FLAG		0xE0 // Special Frame Types 
#define GQUIC_SPECIAL_FRAME_STREAM		0x80
#define GQUIC_SPECIAL_FRAME_ACK			0x40
#define GQUIC_SPECIAL_FRAME_CONGEST_FB	0x20

#define GQUIC_SPECIAL_FRAME_STREAM_FIN		0x40 // FIN
#define GQUIC_SPECIAL_FRAME_STREAM_DLEN 	0x20 //stream length
#define GQUIC_SPECIAL_FRAME_STREAM_OFFSET 	0x1C //offset header field
#define GQUIC_SPECIAL_FRAME_STREAM_ID	 	0x03 //offset header field

#define GQUIC_REGULAR_FRAME_PADDING				0x00
#define GQUIC_REGULAR_FRAME_RST_STREAM			0x01
#define GQUIC_REGULAR_FRAME_CONNECTION_CLOSE	0x02
#define GQUIC_REGULAR_FRAME_GOAWAY				0x03
#define GQUIC_REGULAR_FRAME_WINDOW_UPDATE		0x04
#define GQUIC_REGULAR_FRAME_BLOCKED				0x05
#define GQUIC_REGULAR_FRAME_STOP_WAITING		0x06
#define GQUIC_REGULAR_FRAME_PING				0x07

#define	IQUIC_FRAME_PADDING	0x00
#define	IQUIC_FRAME_PING	0x01

#define QUIC_HANDSHAKE_TYPE_CLIENTHELLO	0x01

//https://datatracker.ietf.org/doc/html/draft-ietf-quic-transport-27#section-12.4
//IQIIC  Frame type (GQUIC_Q046 is iQUIC 17)


/**************************************************************************/
/*                      Message tag                                       */
/**************************************************************************/
#define CHLO 0x43484C4F
#define SHLO 0x53484C4F
#define REJ  0x52454A00
#define PRST 0x50525354


/**************************************************************************/
/*                      Tag                                               */
/**************************************************************************/
#define TAG_SNI  0x534E4900
#define TAG_VER  0x56455200
#define TAG_UAID 0x55414944


#define	EXTENSION_SERVER_NAME	0x0000
#define	EXTENSION_SUPPORT_GROUP	0x000A
#define	EXTENSION_APP_PROT_NEGO	0x0010	//application layer protocol negotiation
#define	EXTENSION_SIG_ALGORITHM	0x000D
#define	EXTENSION_KEY_SHARE		0x0033
#define	EXTENSION_PSK_EXCHANGE	0x002D
#define	EXTENSION_SUPP_SSL_VER	0x002B
#define	EXTENSION_QUIC_PARAM_TLS_33	0x0039  /* draft-ietf-quic-tls-33 */
#define	EXTENSION_QUIC_PARAM_TLS_13	0xFFA5  /* 0xffa5 draft-ietf-quic-tls-13 */
#define	EXTENSION_COMPRESS_CERT	0x001B
#define	EXTENTION_UNKNOWN		0x4469

//  https://www.iana.org/assignments/quic/quic.xhtml
#define	EXT_QUIC_PARAM_ORIGINAL_DST_CONN_ID		0x00
#define	EXT_QUIC_PARAM_MAX_IDLE_TIMEOUT			0x01
#define	EXT_QUIC_PARAM_STATELESS_RST_TOKEN		0x02
#define	EXT_QUIC_PARAM_MAX_UDP_PAYLOAD			0x03
#define	EXT_QUIC_PARAM_MAX_INIT_DATA			0x04
#define	EXT_QUIC_PARAM_MAX_STREAM_BIDI_LOCAL	0x05
#define	EXT_QUIC_PARAM_MAX_STREAM_BIDI_REMOTE	0x06
#define	EXT_QUIC_PARAM_MAX_STREAM_UNI			0x07
#define	EXT_QUIC_PARAM_MAX_STREAMS_BIDI			0x08
#define	EXT_QUIC_PARAM_MAX_STREAMS_UNI			0x09
#define	EXT_QUIC_PARAM_ACK_DELAY_EXPONENT		0x0A
#define	EXT_QUIC_PARAM_MAX_ACK_DELAY			0x0B
#define	EXT_QUIC_PARAM_DISABLE_ACTIVE_MIGRATION	0x0C
#define	EXT_QUIC_PARAM_PREFERRED_ADDRESS		0x0D
#define	EXT_QUIC_PARAM_ACTIVE_CONN_ID_LINIT		0x0E
#define	EXT_QUIC_PARAM_INIT_SRC_CONN_ID			0x0F
#define	EXT_QUIC_PARAM_RETRY_SRC_CONN_ID		0x10
#define	EXT_QUIC_PARAM_MAX_DATAGRAM_FRAME_SIZE	0x20
#define	EXT_QUIC_PARAM_INIT_RTT					0x3127
#define	EXT_QUIC_PARAM_GOOGLE_CONN_OPTIONS		0x3128
#define	EXT_QUIC_PARAM_USER_AGENT				0x3129 // 2021-10-20 deprecated
#define	EXT_QUIC_PARAM_QUIC_VERSION				0x4752

//https://github.com/quicwg/base-drafts/wiki/QUIC-Versions
enum QUIC_VERSION
{
	QUIC_VERSION_UNKNOWN=0,
	//NetApp
	QUANT_VERSION_00=0x45474700,
	QUANT_VERSION_FF=0x454747FF,

	//Private Octopus
	PICOQUIC_VERSION_30=0x50435130,
	
	//google
	GQUIC_VERSION_Q001=0x51303031,
	GQUIC_VERSION_Q002=0x51303032,
	GQUIC_VERSION_Q003=0x51303033,
	GQUIC_VERSION_Q004=0x51303034,
	GQUIC_VERSION_Q005=0x51303035,
	GQUIC_VERSION_Q006=0x51303036,
	GQUIC_VERSION_Q007=0x51303037,
	GQUIC_VERSION_Q008=0x51303038,
	GQUIC_VERSION_Q009=0x51303039,
	
	GQUIC_VERSION_Q010=0x51303130,
	GQUIC_VERSION_Q011=0x51303131,
	GQUIC_VERSION_Q012=0x51303132,
	GQUIC_VERSION_Q013=0x51303133,
	GQUIC_VERSION_Q014=0x51303134,
	GQUIC_VERSION_Q015=0x51303135,
	GQUIC_VERSION_Q016=0x51303136,
	GQUIC_VERSION_Q017=0x51303137,
	GQUIC_VERSION_Q018=0x51303138,
	GQUIC_VERSION_Q019=0x51303139,
	
	GQUIC_VERSION_Q020=0x51303230,
	GQUIC_VERSION_Q021=0x51303231,
	GQUIC_VERSION_Q022=0x51303232,
	GQUIC_VERSION_Q023=0x51303233,
	GQUIC_VERSION_Q024=0x51303234,
	GQUIC_VERSION_Q025=0x51303235,
	GQUIC_VERSION_Q026=0x51303236,
	GQUIC_VERSION_Q027=0x51303237,
	GQUIC_VERSION_Q028=0x51303238,
	GQUIC_VERSION_Q029=0x51303239,
	
	GQUIC_VERSION_Q030=0x51303330,
	GQUIC_VERSION_Q031=0x51303331,
	GQUIC_VERSION_Q032=0x51303332,
	GQUIC_VERSION_Q033=0x51303333,
	GQUIC_VERSION_Q034=0x51303334,
	GQUIC_VERSION_Q035=0x51303335,
	GQUIC_VERSION_Q036=0x51303336,
	GQUIC_VERSION_Q037=0x51303337,
	GQUIC_VERSION_Q038=0x51303338,
	GQUIC_VERSION_Q039=0x51303339,

	GQUIC_VERSION_Q040=0x51303430,
	GQUIC_VERSION_Q041=0x51303431,
	GQUIC_VERSION_Q042=0x51303432,
	GQUIC_VERSION_Q043=0x51303433,
	GQUIC_VERSION_Q044=0x51303434,
	GQUIC_VERSION_Q045=0x51303435,
	GQUIC_VERSION_Q046=0x51303436,
	GQUIC_VERSION_Q047=0x51303437,
	GQUIC_VERSION_Q048=0x51303438, 
	GQUIC_VERSION_Q049=0x51303439,

    GQUIC_VERSION_Q050=0x51303530,
    GQUIC_VERSION_Q051=0x51303531,
    GQUIC_VERSION_Q052=0x51303532,
    GQUIC_VERSION_Q053=0x51303533,
    GQUIC_VERSION_Q054=0x51303534,
    GQUIC_VERSION_Q055=0x51303535,
    GQUIC_VERSION_Q056=0x51303536,
    GQUIC_VERSION_Q057=0x51303537,
    GQUIC_VERSION_Q058=0x51303538,
    GQUIC_VERSION_Q059=0x51303539,
    
    GQUIC_VERSION_Q099=0x51303939,

	//Google QUIC with TLS 48 - 49 (T048 - T049)
	GQUIC_VERSION_T048=0x54303438,
	GQUIC_VERSION_T049=0x54303439,
	
	//Google QUIC with TLS 50 - 59 (T050 - T059)
	GQUIC_VERSION_T050=0x54303530,
	GQUIC_VERSION_T051=0x54303531,
	GQUIC_VERSION_T052=0x54303532,
	GQUIC_VERSION_T053=0x54303533,
	GQUIC_VERSION_T054=0x54303534,
	GQUIC_VERSION_T055=0x54303535,
	GQUIC_VERSION_T056=0x54303536,
	GQUIC_VERSION_T057=0x54303537,
	GQUIC_VERSION_T058=0x54303538,
	GQUIC_VERSION_T059=0x54303539,

	//Google QUIC with TLS 99 (T099)
	GQUIC_VERSION_T099=0x54303939,
	
	//Google Proxied QUIC
	PQUIC_VERSION_PROX=0x50524f58,

	//quic-go
	QUIC_GO_VERSION_00=0x51474F00,
	QUIC_GO_VERSION_FF=0x51474FFF,

	//quicly
	QUICLY_VERSION_00=0x91c17000,
	QUICLY_VERSION_FF=0x91c170FF,
	
	//Microsoft
	MSQUIC_VERSION_00=0xabcd0000,
	MSQUIC_VERSION_0F=0xabcd000F,

	//Mozilla
	MOZQUIC_VERSION_00=0xf123f0c0,
	MOZQUIC_VERSION_0F=0xf123f0cF,

	//Facebook
	MVFST_VERSION_00=0xfaceb000,
	MVFST_VERSION_01=0xfaceb001,
	MVFST_VERSION_02=0xfaceb002,
	MVFST_VERSION_03=0xfaceb003,
	MVFST_VERSION_04=0xfaceb004,
	MVFST_VERSION_05=0xfaceb005,
	MVFST_VERSION_06=0xfaceb006,
	MVFST_VERSION_07=0xfaceb007,
	MVFST_VERSION_08=0xfaceb008,
	MVFST_VERSION_09=0xfaceb009,
	MVFST_VERSION_0A=0xfaceb00A,
	MVFST_VERSION_0B=0xfaceb00B,
	MVFST_VERSION_0C=0xfaceb00C,
	MVFST_VERSION_0D=0xfaceb00D,
	MVFST_VERSION_0E=0xfaceb00E,
	MVFST_VERSION_0F=0xfaceb00F,
	
	//IETF
	IQUIC_VERSION_RFC9000=0x00000001,
	IQUIC_VERSION_I001=0xFF000001,
	IQUIC_VERSION_I002=0xFF000002,
	IQUIC_VERSION_I003=0xFF000003,
	IQUIC_VERSION_I004=0xFF000004,
	IQUIC_VERSION_I005=0xFF000005,
	IQUIC_VERSION_I006=0xFF000006,
	IQUIC_VERSION_I007=0xFF000007,
	IQUIC_VERSION_I008=0xFF000008,
	IQUIC_VERSION_I009=0xFF000009,
	IQUIC_VERSION_I010=0xFF00000A,
	IQUIC_VERSION_I011=0xFF00000B,
	IQUIC_VERSION_I012=0xFF00000C,
	IQUIC_VERSION_I013=0xFF00000D,
	IQUIC_VERSION_I014=0xFF00000E,
	IQUIC_VERSION_I015=0xFF00000F,
	IQUIC_VERSION_I016=0xFF000010,
	IQUIC_VERSION_I017=0xFF000011,
	IQUIC_VERSION_I018=0xFF000012,
	IQUIC_VERSION_I019=0xFF000013,
	IQUIC_VERSION_I020=0xFF000014,
	IQUIC_VERSION_I021=0xFF000015,
	IQUIC_VERSION_I022=0xFF000016,
	IQUIC_VERSION_I023=0xFF000017,
	IQUIC_VERSION_I024=0xFF000018,
	IQUIC_VERSION_I025=0xFF000019,
	IQUIC_VERSION_I026=0xFF00001A,
	IQUIC_VERSION_I027=0xFF00001B,
	IQUIC_VERSION_I028=0xFF00001C,
	IQUIC_VERSION_I029=0xFF00001D,
	IQUIC_VERSION_I030=0xFF00001E,
	IQUIC_VERSION_I031=0xFF00001F,
	IQUIC_VERSION_I032=0xFF000020
};

#define MAX_CLIENT_HELLO_CHUNK_SIZE (4096)
struct quic_buffer
{
	unsigned char *buffer;
	size_t max_size;
	size_t datalen;
};

struct quic_context
{
	unsigned char link_state;
	unsigned char parse_pkt_cnt;
	unsigned char pre_parse_state;
	unsigned char parse_first_pkt;
	unsigned char padding[4];
	void *business_pme;
	struct quic_info quic_info;
	struct quic_buffer quic_buf; // for client hello fragment
};

unsigned char quic_analyze_entry(const struct streaminfo *pstream, struct quic_context* context, int thread_seq, const void* a_packet);
unsigned char quic_call_business_plug(const struct streaminfo *pstream, struct quic_context *context, void *buff, int buff_len, enum quic_interested_region region_mask, const void *a_packet);

#endif