lsquic_crt_compress.h revision a74702c6
1a74702c6SGeorge Wang/* Copyright (c) 2017 - 2022 LiteSpeed Technologies Inc. See LICENSE. */ 250aadb33SDmitri Tikhonov#ifndef __LSQUIC_CRT_COMPRESS_H__ 350aadb33SDmitri Tikhonov#define __LSQUIC_CRT_COMPRESS_H__ 450aadb33SDmitri Tikhonov 550aadb33SDmitri Tikhonov#include <stdint.h> 650aadb33SDmitri Tikhonov 750aadb33SDmitri Tikhonovstruct lsquic_str; 850aadb33SDmitri Tikhonov 950aadb33SDmitri Tikhonov#ifdef __cplusplus 1050aadb33SDmitri Tikhonovextern "C" { 1150aadb33SDmitri Tikhonov#endif 1250aadb33SDmitri Tikhonov 135392f7a3SLiteSpeed Tech 1450aadb33SDmitri Tikhonovenum entry_type { 1550aadb33SDmitri Tikhonov END_OF_LIST = 0, 1650aadb33SDmitri Tikhonov ENTRY_COMPRESSED = 1, 1750aadb33SDmitri Tikhonov ENTRY_CACHED = 2, 1850aadb33SDmitri Tikhonov ENTRY_COMMON = 3, 1950aadb33SDmitri Tikhonov}; 2050aadb33SDmitri Tikhonov 2150aadb33SDmitri Tikhonovtypedef struct cert_entry_st { 2250aadb33SDmitri Tikhonov enum entry_type type; 2350aadb33SDmitri Tikhonov uint32_t index; 2450aadb33SDmitri Tikhonov uint64_t hash; 2550aadb33SDmitri Tikhonov uint64_t set_hash; 2650aadb33SDmitri Tikhonov} cert_entry_t; 2750aadb33SDmitri Tikhonov 285392f7a3SLiteSpeed Tech 2950aadb33SDmitri Tikhonovtypedef struct common_cert_st 3050aadb33SDmitri Tikhonov{ 3150aadb33SDmitri Tikhonov size_t num_certs; 3250aadb33SDmitri Tikhonov const unsigned char* const* certs; 3350aadb33SDmitri Tikhonov const size_t* lens; 3450aadb33SDmitri Tikhonov uint64_t hash; 3550aadb33SDmitri Tikhonov} common_cert_t; 3650aadb33SDmitri Tikhonov 372f4629f2SDmitri Tikhonovint 382f4629f2SDmitri Tikhonovlsquic_crt_init (void); 392f4629f2SDmitri Tikhonov 40a5fa05f9SDmitri Tikhonovstruct lsquic_str * lsquic_get_common_certs_hash(); 4150aadb33SDmitri Tikhonov 425392f7a3SLiteSpeed Tech 43a5fa05f9SDmitri Tikhonovint lsquic_get_common_cert(uint64_t hash, uint32_t index, struct lsquic_str *buf); 445392f7a3SLiteSpeed Tech 45fbc6cc04SDmitri Tikhonovstruct compressed_cert 46fbc6cc04SDmitri Tikhonov{ 47fbc6cc04SDmitri Tikhonov size_t len; 48fbc6cc04SDmitri Tikhonov unsigned refcnt; 49fbc6cc04SDmitri Tikhonov unsigned char buf[0]; /* len bytes */ 50fbc6cc04SDmitri Tikhonov}; 51fbc6cc04SDmitri Tikhonov 52fbc6cc04SDmitri Tikhonov/* Returns newly allocated structure or NULL on error */ 53fbc6cc04SDmitri Tikhonovstruct compressed_cert * 54fbc6cc04SDmitri Tikhonovlsquic_compress_certs(struct lsquic_str **certs, size_t certs_count, 555392f7a3SLiteSpeed Tech struct lsquic_str *client_common_set_hashes, 56fbc6cc04SDmitri Tikhonov struct lsquic_str *client_cached_cert_hashes); 57fbc6cc04SDmitri Tikhonov 58fbc6cc04SDmitri Tikhonovint 59fbc6cc04SDmitri Tikhonovlsquic_get_certs_count (const struct compressed_cert *); 605392f7a3SLiteSpeed Tech 61a5fa05f9SDmitri Tikhonovint lsquic_decompress_certs(const unsigned char *in, const unsigned char *in_end, 6250aadb33SDmitri Tikhonov struct lsquic_str *cached_certs, size_t cached_certs_count, 6350aadb33SDmitri Tikhonov struct lsquic_str **out_certs, 6450aadb33SDmitri Tikhonov size_t *out_certs_count); 6550aadb33SDmitri Tikhonov 6650aadb33SDmitri Tikhonovvoid 6750aadb33SDmitri Tikhonovlsquic_crt_cleanup (void); 6850aadb33SDmitri Tikhonov 695392f7a3SLiteSpeed Tech 7050aadb33SDmitri Tikhonov#ifdef __cplusplus 7150aadb33SDmitri Tikhonov} 7250aadb33SDmitri Tikhonov#endif 7350aadb33SDmitri Tikhonov 745392f7a3SLiteSpeed Tech 7550aadb33SDmitri Tikhonov#endif //__LSQUIC_CRT_COMPRESS_H__ 76