1 /* 2 * Copyright 2015-2021 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the Apache License 2.0 (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #ifndef OSSL_INTERNAL_DANE_H 11 #define OSSL_INTERNAL_DANE_H 12 # pragma once 13 14 # include <openssl/safestack.h> 15 16 /*- 17 * Certificate usages: 18 * https://tools.ietf.org/html/rfc6698#section-2.1.1 19 */ 20 #define DANETLS_USAGE_PKIX_TA 0 21 #define DANETLS_USAGE_PKIX_EE 1 22 #define DANETLS_USAGE_DANE_TA 2 23 #define DANETLS_USAGE_DANE_EE 3 24 #define DANETLS_USAGE_LAST DANETLS_USAGE_DANE_EE 25 26 /*- 27 * Selectors: 28 * https://tools.ietf.org/html/rfc6698#section-2.1.2 29 */ 30 #define DANETLS_SELECTOR_CERT 0 31 #define DANETLS_SELECTOR_SPKI 1 32 #define DANETLS_SELECTOR_LAST DANETLS_SELECTOR_SPKI 33 34 /*- 35 * Matching types: 36 * https://tools.ietf.org/html/rfc6698#section-2.1.3 37 */ 38 #define DANETLS_MATCHING_FULL 0 39 #define DANETLS_MATCHING_2256 1 40 #define DANETLS_MATCHING_2512 2 41 #define DANETLS_MATCHING_LAST DANETLS_MATCHING_2512 42 43 typedef struct danetls_record_st { 44 uint8_t usage; 45 uint8_t selector; 46 uint8_t mtype; 47 unsigned char *data; 48 size_t dlen; 49 EVP_PKEY *spki; 50 } danetls_record; 51 52 DEFINE_STACK_OF(danetls_record) 53 54 /* 55 * Shared DANE context 56 */ 57 struct dane_ctx_st { 58 const EVP_MD **mdevp; /* mtype -> digest */ 59 uint8_t *mdord; /* mtype -> preference */ 60 uint8_t mdmax; /* highest supported mtype */ 61 unsigned long flags; /* feature bitmask */ 62 }; 63 64 /* 65 * Per connection DANE state 66 */ 67 struct ssl_dane_st { 68 struct dane_ctx_st *dctx; 69 STACK_OF(danetls_record) *trecs; 70 STACK_OF(X509) *certs; /* DANE-TA(2) Cert(0) Full(0) certs */ 71 danetls_record *mtlsa; /* Matching TLSA record */ 72 X509 *mcert; /* DANE matched cert */ 73 uint32_t umask; /* Usages present */ 74 int mdpth; /* Depth of matched cert */ 75 int pdpth; /* Depth of PKIX trust */ 76 unsigned long flags; /* feature bitmask */ 77 }; 78 79 #define DANETLS_ENABLED(dane) \ 80 ((dane) != NULL && sk_danetls_record_num((dane)->trecs) > 0) 81 82 #define DANETLS_USAGE_BIT(u) (((uint32_t)1) << u) 83 84 #define DANETLS_PKIX_TA_MASK (DANETLS_USAGE_BIT(DANETLS_USAGE_PKIX_TA)) 85 #define DANETLS_PKIX_EE_MASK (DANETLS_USAGE_BIT(DANETLS_USAGE_PKIX_EE)) 86 #define DANETLS_DANE_TA_MASK (DANETLS_USAGE_BIT(DANETLS_USAGE_DANE_TA)) 87 #define DANETLS_DANE_EE_MASK (DANETLS_USAGE_BIT(DANETLS_USAGE_DANE_EE)) 88 89 #define DANETLS_PKIX_MASK (DANETLS_PKIX_TA_MASK | DANETLS_PKIX_EE_MASK) 90 #define DANETLS_DANE_MASK (DANETLS_DANE_TA_MASK | DANETLS_DANE_EE_MASK) 91 #define DANETLS_TA_MASK (DANETLS_PKIX_TA_MASK | DANETLS_DANE_TA_MASK) 92 #define DANETLS_EE_MASK (DANETLS_PKIX_EE_MASK | DANETLS_DANE_EE_MASK) 93 94 #define DANETLS_HAS_PKIX(dane) ((dane) && ((dane)->umask & DANETLS_PKIX_MASK)) 95 #define DANETLS_HAS_DANE(dane) ((dane) && ((dane)->umask & DANETLS_DANE_MASK)) 96 #define DANETLS_HAS_TA(dane) ((dane) && ((dane)->umask & DANETLS_TA_MASK)) 97 #define DANETLS_HAS_EE(dane) ((dane) && ((dane)->umask & DANETLS_EE_MASK)) 98 99 #define DANETLS_HAS_PKIX_TA(dane) ((dane)&&((dane)->umask & DANETLS_PKIX_TA_MASK)) 100 #define DANETLS_HAS_PKIX_EE(dane) ((dane)&&((dane)->umask & DANETLS_PKIX_EE_MASK)) 101 #define DANETLS_HAS_DANE_TA(dane) ((dane)&&((dane)->umask & DANETLS_DANE_TA_MASK)) 102 #define DANETLS_HAS_DANE_EE(dane) ((dane)&&((dane)->umask & DANETLS_DANE_EE_MASK)) 103 104 #endif /* OSSL_INTERNAL_DANE_H */ 105