src/resolve/resolved-dns-dnssec.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 typedef enum DnssecResult DnssecResult;
   5 typedef enum DnssecVerdict DnssecVerdict;
   6
   7 #include "dns-domain.h"
   8 #include "resolved-dns-answer.h"
   9 #include "resolved-dns-rr.h"
  10
  11 enum DnssecResult {
  12         /* These five are returned by dnssec_verify_rrset() */
  13         DNSSEC_VALIDATED,
  14         DNSSEC_VALIDATED_WILDCARD, /* Validated via a wildcard RRSIG, further NSEC/NSEC3 checks necessary */
  15         DNSSEC_INVALID,
  16         DNSSEC_SIGNATURE_EXPIRED,
  17         DNSSEC_UNSUPPORTED_ALGORITHM,
  18
  19         /* These two are added by dnssec_verify_rrset_search() */
  20         DNSSEC_NO_SIGNATURE,
  21         DNSSEC_MISSING_KEY,
  22
  23         /* These two are added by the DnsTransaction logic */
  24         DNSSEC_UNSIGNED,
  25         DNSSEC_FAILED_AUXILIARY,
  26         DNSSEC_NSEC_MISMATCH,
  27         DNSSEC_INCOMPATIBLE_SERVER,
  28
  29         _DNSSEC_RESULT_MAX,
  30         _DNSSEC_RESULT_INVALID = -1
  31 };
  32
  33 enum DnssecVerdict {
  34         DNSSEC_SECURE,
  35         DNSSEC_INSECURE,
  36         DNSSEC_BOGUS,
  37         DNSSEC_INDETERMINATE,
  38
  39         _DNSSEC_VERDICT_MAX,
  40         _DNSSEC_VERDICT_INVALID = -1
  41 };
  42
  43 #define DNSSEC_CANONICAL_HOSTNAME_MAX (DNS_HOSTNAME_MAX + 2)
  44
  45 /* The longest digest we'll ever generate, of all digest algorithms we support */
  46 #define DNSSEC_HASH_SIZE_MAX (MAX(20, 32))
  47
  48 int dnssec_rrsig_match_dnskey(DnsResourceRecord *rrsig, DnsResourceRecord *dnskey, bool revoked_ok);
  49 int dnssec_key_match_rrsig(const DnsResourceKey *key, DnsResourceRecord *rrsig);
  50
  51 int dnssec_verify_rrset(DnsAnswer *answer, const DnsResourceKey *key, DnsResourceRecord *rrsig, DnsResourceRecord *dnskey, usec_t realtime, DnssecResult *result);
  52 int dnssec_verify_rrset_search(DnsAnswer *answer, const DnsResourceKey *key, DnsAnswer *validated_dnskeys, usec_t realtime, DnssecResult *result, DnsResourceRecord **rrsig);
  53
  54 int dnssec_verify_dnskey_by_ds(DnsResourceRecord *dnskey, DnsResourceRecord *ds, bool mask_revoke);
  55 int dnssec_verify_dnskey_by_ds_search(DnsResourceRecord *dnskey, DnsAnswer *validated_ds);
  56
  57 int dnssec_has_rrsig(DnsAnswer *a, const DnsResourceKey *key);
  58
  59 uint16_t dnssec_keytag(DnsResourceRecord *dnskey, bool mask_revoke);
  60
  61 int dnssec_canonicalize(const char *n, char *buffer, size_t buffer_max);
  62
  63 int dnssec_nsec3_hash(DnsResourceRecord *nsec3, const char *name, void *ret);
  64
  65 typedef enum DnssecNsecResult {
  66         DNSSEC_NSEC_NO_RR,     /* No suitable NSEC/NSEC3 RR found */
  67         DNSSEC_NSEC_CNAME,     /* Didn't find what was asked for, but did find CNAME */
  68         DNSSEC_NSEC_UNSUPPORTED_ALGORITHM,
  69         DNSSEC_NSEC_NXDOMAIN,
  70         DNSSEC_NSEC_NODATA,
  71         DNSSEC_NSEC_FOUND,
  72         DNSSEC_NSEC_OPTOUT,
  73 } DnssecNsecResult;
  74
  75 int dnssec_nsec_test(DnsAnswer *answer, DnsResourceKey *key, DnssecNsecResult *result, bool *authenticated, uint32_t *ttl);
  76
  77 int dnssec_test_positive_wildcard(DnsAnswer *a, const char *name, const char *source, const char *zone, bool *authenticated);
  78
  79 const char* dnssec_result_to_string(DnssecResult m) _const_;
  80 DnssecResult dnssec_result_from_string(const char *s) _pure_;
  81
  82 const char* dnssec_verdict_to_string(DnssecVerdict m) _const_;
  83 DnssecVerdict dnssec_verdict_from_string(const char *s) _pure_;