[331] | 1 | /*
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| 2 | * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #ifndef HEADER_INTERNAL_DANE_H
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| 11 | #define HEADER_INTERNAL_DANE_H
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| 12 |
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| 13 | #include <openssl/safestack.h>
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| 14 |
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| 15 | /*-
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| 16 | * Certificate usages:
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| 17 | * https://tools.ietf.org/html/rfc6698#section-2.1.1
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| 18 | */
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| 19 | #define DANETLS_USAGE_PKIX_TA 0
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| 20 | #define DANETLS_USAGE_PKIX_EE 1
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| 21 | #define DANETLS_USAGE_DANE_TA 2
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| 22 | #define DANETLS_USAGE_DANE_EE 3
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| 23 | #define DANETLS_USAGE_LAST DANETLS_USAGE_DANE_EE
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| 24 |
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| 25 | /*-
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| 26 | * Selectors:
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| 27 | * https://tools.ietf.org/html/rfc6698#section-2.1.2
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| 28 | */
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| 29 | #define DANETLS_SELECTOR_CERT 0
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| 30 | #define DANETLS_SELECTOR_SPKI 1
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| 31 | #define DANETLS_SELECTOR_LAST DANETLS_SELECTOR_SPKI
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| 32 |
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| 33 | /*-
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| 34 | * Matching types:
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| 35 | * https://tools.ietf.org/html/rfc6698#section-2.1.3
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| 36 | */
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| 37 | #define DANETLS_MATCHING_FULL 0
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| 38 | #define DANETLS_MATCHING_2256 1
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| 39 | #define DANETLS_MATCHING_2512 2
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| 40 | #define DANETLS_MATCHING_LAST DANETLS_MATCHING_2512
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| 41 |
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| 42 | typedef struct danetls_record_st {
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| 43 | uint8_t usage;
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| 44 | uint8_t selector;
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| 45 | uint8_t mtype;
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| 46 | unsigned char *data;
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| 47 | size_t dlen;
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| 48 | EVP_PKEY *spki;
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| 49 | } danetls_record;
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| 50 |
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| 51 | DEFINE_STACK_OF(danetls_record)
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| 52 |
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| 53 | /*
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| 54 | * Shared DANE context
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| 55 | */
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| 56 | struct dane_ctx_st {
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| 57 | const EVP_MD **mdevp; /* mtype -> digest */
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| 58 | uint8_t *mdord; /* mtype -> preference */
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| 59 | uint8_t mdmax; /* highest supported mtype */
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| 60 | unsigned long flags; /* feature bitmask */
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| 61 | };
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| 62 |
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| 63 | /*
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| 64 | * Per connection DANE state
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| 65 | */
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| 66 | struct ssl_dane_st {
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| 67 | struct dane_ctx_st *dctx;
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| 68 | STACK_OF(danetls_record) *trecs;
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| 69 | STACK_OF(X509) *certs; /* DANE-TA(2) Cert(0) Full(0) certs */
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| 70 | danetls_record *mtlsa; /* Matching TLSA record */
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| 71 | X509 *mcert; /* DANE matched cert */
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| 72 | uint32_t umask; /* Usages present */
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| 73 | int mdpth; /* Depth of matched cert */
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| 74 | int pdpth; /* Depth of PKIX trust */
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| 75 | unsigned long flags; /* feature bitmask */
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| 76 | };
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| 77 |
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| 78 | #define DANETLS_ENABLED(dane) \
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| 79 | ((dane) != NULL && sk_danetls_record_num((dane)->trecs) > 0)
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| 80 |
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| 81 | #define DANETLS_USAGE_BIT(u) (((uint32_t)1) << u)
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| 82 |
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| 83 | #define DANETLS_PKIX_TA_MASK (DANETLS_USAGE_BIT(DANETLS_USAGE_PKIX_TA))
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| 84 | #define DANETLS_PKIX_EE_MASK (DANETLS_USAGE_BIT(DANETLS_USAGE_PKIX_EE))
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| 85 | #define DANETLS_DANE_TA_MASK (DANETLS_USAGE_BIT(DANETLS_USAGE_DANE_TA))
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| 86 | #define DANETLS_DANE_EE_MASK (DANETLS_USAGE_BIT(DANETLS_USAGE_DANE_EE))
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| 87 |
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| 88 | #define DANETLS_PKIX_MASK (DANETLS_PKIX_TA_MASK | DANETLS_PKIX_EE_MASK)
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| 89 | #define DANETLS_DANE_MASK (DANETLS_DANE_TA_MASK | DANETLS_DANE_EE_MASK)
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| 90 | #define DANETLS_TA_MASK (DANETLS_PKIX_TA_MASK | DANETLS_DANE_TA_MASK)
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| 91 | #define DANETLS_EE_MASK (DANETLS_PKIX_EE_MASK | DANETLS_DANE_EE_MASK)
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| 92 |
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| 93 | #define DANETLS_HAS_PKIX(dane) ((dane) && ((dane)->umask & DANETLS_PKIX_MASK))
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| 94 | #define DANETLS_HAS_DANE(dane) ((dane) && ((dane)->umask & DANETLS_DANE_MASK))
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| 95 | #define DANETLS_HAS_TA(dane) ((dane) && ((dane)->umask & DANETLS_TA_MASK))
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| 96 | #define DANETLS_HAS_EE(dane) ((dane) && ((dane)->umask & DANETLS_EE_MASK))
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| 97 |
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| 98 | #define DANETLS_HAS_PKIX_TA(dane) ((dane)&&((dane)->umask & DANETLS_PKIX_TA_MASK))
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| 99 | #define DANETLS_HAS_PKIX_EE(dane) ((dane)&&((dane)->umask & DANETLS_PKIX_EE_MASK))
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| 100 | #define DANETLS_HAS_DANE_TA(dane) ((dane)&&((dane)->umask & DANETLS_DANE_TA_MASK))
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| 101 | #define DANETLS_HAS_DANE_EE(dane) ((dane)&&((dane)->umask & DANETLS_DANE_EE_MASK))
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| 102 |
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| 103 | #endif /* HEADER_INTERNAL_DANE_H */
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