76 lines
1.6 KiB
C
76 lines
1.6 KiB
C
/* Copyright (c) 2017 - 2022 LiteSpeed Technologies Inc. See LICENSE. */
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#ifndef __LSQUIC_CRT_COMPRESS_H__
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#define __LSQUIC_CRT_COMPRESS_H__
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#include <stdint.h>
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struct lsquic_str;
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#ifdef __cplusplus
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extern "C" {
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#endif
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enum entry_type {
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END_OF_LIST = 0,
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ENTRY_COMPRESSED = 1,
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ENTRY_CACHED = 2,
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ENTRY_COMMON = 3,
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};
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typedef struct cert_entry_st {
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enum entry_type type;
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uint32_t index;
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uint64_t hash;
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uint64_t set_hash;
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} cert_entry_t;
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typedef struct common_cert_st
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{
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size_t num_certs;
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const unsigned char* const* certs;
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const size_t* lens;
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uint64_t hash;
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} common_cert_t;
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int
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lsquic_crt_init (void);
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struct lsquic_str * lsquic_get_common_certs_hash();
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int lsquic_get_common_cert(uint64_t hash, uint32_t index, struct lsquic_str *buf);
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struct compressed_cert
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{
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size_t len;
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unsigned refcnt;
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unsigned char buf[0]; /* len bytes */
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};
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/* Returns newly allocated structure or NULL on error */
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struct compressed_cert *
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lsquic_compress_certs(struct lsquic_str **certs, size_t certs_count,
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struct lsquic_str *client_common_set_hashes,
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struct lsquic_str *client_cached_cert_hashes);
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int
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lsquic_get_certs_count (const struct compressed_cert *);
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int lsquic_decompress_certs(const unsigned char *in, const unsigned char *in_end,
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struct lsquic_str *cached_certs, size_t cached_certs_count,
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struct lsquic_str **out_certs,
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size_t *out_certs_count);
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void
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lsquic_crt_cleanup (void);
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#ifdef __cplusplus
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}
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#endif
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#endif //__LSQUIC_CRT_COMPRESS_H__
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