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Simple HTTP client with HTTP/1.1, HTTP/2, and HTTP/3 support

Retired package: Release invalid - Use 3.0.1 instead
Security advisory: This version has known vulnerabilities. View advisories
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hackney c_src lsquic src liblsquic lsquic_tokgen.h
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c_src/lsquic/src/liblsquic/lsquic_tokgen.h 

/* Copyright (c) 2017 - 2022 LiteSpeed Technologies Inc.  See LICENSE. */

#ifndef LSQUIC_TOKEN_H

#define LSQUIC_TOKEN_H 1



struct lsquic_engine_public;

struct sockaddr;

struct lsquic_packet_in;

struct lsquic_cid;



enum token_type { TOKEN_RETRY, TOKEN_RESUME, N_TOKEN_TYPES, };



struct token_generator;



struct token_generator *

lsquic_tg_new (struct lsquic_engine_public *);



void

lsquic_tg_destroy (struct token_generator *);



/* `reset_token' must be IQUIC_SRESET_TOKEN_SZ bytes in length */

void

lsquic_tg_generate_sreset (struct token_generator *,

        const struct lsquic_cid *cid, unsigned char *reset_token);





/* Retry and Resume tokens have identical sizes.  Use *RETRY* macros

 * for both.

 */

#define RETRY_TAG_LEN 16



/* Type is encoded in the nonce */

#define RETRY_NONCE_LEN 12



#define MAX_RETRY_TOKEN_LEN (RETRY_NONCE_LEN + 1 /* version */ + \

    sizeof(time_t) /* time */ + 1 /* IPv4 or IPv6 */ + \

    16 /* IPv6 or IPv4 address */ + 2 /* Port number */ + MAX_CID_LEN + \

    RETRY_TAG_LEN)



/* Need this to make sure we have enough bytes for Bloom filter functions */

#define MIN_RESUME_TOKEN_LEN (RETRY_NONCE_LEN + 1 /* version */ + \

    sizeof(time_t) /* time */ + 1 /* IPv4 or IPv6 */ + \

    4 /* IPv4 address */ + 0 /* No port number */ + 0 /* No CID */ + \

    RETRY_TAG_LEN)



ssize_t

lsquic_tg_generate_retry (struct token_generator *,

        unsigned char *buf, size_t bufsz,

        const unsigned char *scid_buf, size_t scid_len,

        const struct sockaddr *sa_peer, const struct lsquic_cid *odcid);



ssize_t

lsquic_tg_generate_resume (struct token_generator *,

        unsigned char *buf, size_t bufsz,

        const struct sockaddr *sa_peer);



int

lsquic_tg_validate_token (struct token_generator *,

        const struct lsquic_packet_in *, const struct sockaddr *,

        struct lsquic_cid *);



size_t

lsquic_tg_token_size (const struct token_generator *tokgen,

                enum token_type token_type, const struct sockaddr *sa_peer);



#endif