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- /*
- * Copyright 2022-2023 The OpenSSL Project Authors. All Rights Reserved.
- *
- * Licensed under the Apache License 2.0 (the "License"). You may not use
- * this file except in compliance with the License. You can obtain a copy
- * in the file LICENSE in the source distribution or at
- * https://www.openssl.org/source/license.html
- */
- #ifndef OSSL_QUIC_TYPES_H
- # define OSSL_QUIC_TYPES_H
- # include <openssl/ssl.h>
- # include <internal/ssl.h>
- # include <assert.h>
- # include <string.h>
- # ifndef OPENSSL_NO_QUIC
- /* QUIC encryption levels. */
- enum {
- QUIC_ENC_LEVEL_INITIAL = 0,
- QUIC_ENC_LEVEL_HANDSHAKE,
- QUIC_ENC_LEVEL_0RTT,
- QUIC_ENC_LEVEL_1RTT,
- QUIC_ENC_LEVEL_NUM /* Must be the ultimate entry */
- };
- /* QUIC packet number spaces. */
- enum {
- QUIC_PN_SPACE_INITIAL = 0,
- QUIC_PN_SPACE_HANDSHAKE,
- /* New entries must go here, so that QUIC_PN_SPACE_APP is the penultimate */
- QUIC_PN_SPACE_APP,
- QUIC_PN_SPACE_NUM /* Must be the ultimate entry */
- };
- static ossl_unused ossl_inline uint32_t
- ossl_quic_enc_level_to_pn_space(uint32_t enc_level)
- {
- switch (enc_level) {
- case QUIC_ENC_LEVEL_INITIAL:
- return QUIC_PN_SPACE_INITIAL;
- case QUIC_ENC_LEVEL_HANDSHAKE:
- return QUIC_PN_SPACE_HANDSHAKE;
- case QUIC_ENC_LEVEL_0RTT:
- case QUIC_ENC_LEVEL_1RTT:
- return QUIC_PN_SPACE_APP;
- default:
- assert(0);
- return QUIC_PN_SPACE_APP;
- }
- }
- /* QUIC packet number representation. */
- typedef uint64_t QUIC_PN;
- # define QUIC_PN_INVALID UINT64_MAX
- static ossl_unused ossl_inline QUIC_PN ossl_quic_pn_max(QUIC_PN a, QUIC_PN b)
- {
- return a > b ? a : b;
- }
- static ossl_unused ossl_inline QUIC_PN ossl_quic_pn_min(QUIC_PN a, QUIC_PN b)
- {
- return a < b ? a : b;
- }
- static ossl_unused ossl_inline int ossl_quic_pn_valid(QUIC_PN pn)
- {
- return pn < (((QUIC_PN)1) << 62);
- }
- /* QUIC connection ID representation. */
- # define QUIC_MAX_CONN_ID_LEN 20
- # define QUIC_MIN_ODCID_LEN 8 /* RFC 9000 s. 7.2 */
- typedef struct quic_conn_id_st {
- unsigned char id_len, id[QUIC_MAX_CONN_ID_LEN];
- } QUIC_CONN_ID;
- static ossl_unused ossl_inline int ossl_quic_conn_id_eq(const QUIC_CONN_ID *a,
- const QUIC_CONN_ID *b)
- {
- if (a->id_len != b->id_len || a->id_len > QUIC_MAX_CONN_ID_LEN)
- return 0;
- return memcmp(a->id, b->id, a->id_len) == 0;
- }
- /*
- * Generates a random CID of the given length. libctx may be NULL.
- * Returns 1 on success or 0 on failure.
- */
- int ossl_quic_gen_rand_conn_id(OSSL_LIB_CTX *libctx, size_t len,
- QUIC_CONN_ID *cid);
- # define QUIC_MIN_INITIAL_DGRAM_LEN 1200
- # define QUIC_DEFAULT_ACK_DELAY_EXP 3
- # define QUIC_MAX_ACK_DELAY_EXP 20
- # define QUIC_DEFAULT_MAX_ACK_DELAY 25
- # define QUIC_MIN_ACTIVE_CONN_ID_LIMIT 2
- /* Arbitrary choice of default idle timeout (not an RFC value). */
- # define QUIC_DEFAULT_IDLE_TIMEOUT 30000
- # define QUIC_STATELESS_RESET_TOKEN_LEN 16
- typedef struct {
- unsigned char token[QUIC_STATELESS_RESET_TOKEN_LEN];
- } QUIC_STATELESS_RESET_TOKEN;
- /*
- * An encoded preferred_addr transport parameter cannot be shorter or longer
- * than these lengths in bytes.
- */
- # define QUIC_MIN_ENCODED_PREFERRED_ADDR_LEN 41
- # define QUIC_MAX_ENCODED_PREFERRED_ADDR_LEN 61
- # endif
- #endif
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