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-rw-r--r--src/resolve/resolved-dns-dnssec.h83
1 files changed, 83 insertions, 0 deletions
diff --git a/src/resolve/resolved-dns-dnssec.h b/src/resolve/resolved-dns-dnssec.h
new file mode 100644
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--- /dev/null
+++ b/src/resolve/resolved-dns-dnssec.h
@@ -0,0 +1,83 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+#pragma once
+
+typedef enum DnssecResult DnssecResult;
+typedef enum DnssecVerdict DnssecVerdict;
+
+#include "dns-domain.h"
+#include "resolved-dns-answer.h"
+#include "resolved-dns-rr.h"
+
+enum DnssecResult {
+ /* These five are returned by dnssec_verify_rrset() */
+ DNSSEC_VALIDATED,
+ DNSSEC_VALIDATED_WILDCARD, /* Validated via a wildcard RRSIG, further NSEC/NSEC3 checks necessary */
+ DNSSEC_INVALID,
+ DNSSEC_SIGNATURE_EXPIRED,
+ DNSSEC_UNSUPPORTED_ALGORITHM,
+
+ /* These two are added by dnssec_verify_rrset_search() */
+ DNSSEC_NO_SIGNATURE,
+ DNSSEC_MISSING_KEY,
+
+ /* These two are added by the DnsTransaction logic */
+ DNSSEC_UNSIGNED,
+ DNSSEC_FAILED_AUXILIARY,
+ DNSSEC_NSEC_MISMATCH,
+ DNSSEC_INCOMPATIBLE_SERVER,
+
+ _DNSSEC_RESULT_MAX,
+ _DNSSEC_RESULT_INVALID = -1
+};
+
+enum DnssecVerdict {
+ DNSSEC_SECURE,
+ DNSSEC_INSECURE,
+ DNSSEC_BOGUS,
+ DNSSEC_INDETERMINATE,
+
+ _DNSSEC_VERDICT_MAX,
+ _DNSSEC_VERDICT_INVALID = -1
+};
+
+#define DNSSEC_CANONICAL_HOSTNAME_MAX (DNS_HOSTNAME_MAX + 2)
+
+/* The longest digest we'll ever generate, of all digest algorithms we support */
+#define DNSSEC_HASH_SIZE_MAX (MAX(20, 32))
+
+int dnssec_rrsig_match_dnskey(DnsResourceRecord *rrsig, DnsResourceRecord *dnskey, bool revoked_ok);
+int dnssec_key_match_rrsig(const DnsResourceKey *key, DnsResourceRecord *rrsig);
+
+int dnssec_verify_rrset(DnsAnswer *answer, const DnsResourceKey *key, DnsResourceRecord *rrsig, DnsResourceRecord *dnskey, usec_t realtime, DnssecResult *result);
+int dnssec_verify_rrset_search(DnsAnswer *answer, const DnsResourceKey *key, DnsAnswer *validated_dnskeys, usec_t realtime, DnssecResult *result, DnsResourceRecord **rrsig);
+
+int dnssec_verify_dnskey_by_ds(DnsResourceRecord *dnskey, DnsResourceRecord *ds, bool mask_revoke);
+int dnssec_verify_dnskey_by_ds_search(DnsResourceRecord *dnskey, DnsAnswer *validated_ds);
+
+int dnssec_has_rrsig(DnsAnswer *a, const DnsResourceKey *key);
+
+uint16_t dnssec_keytag(DnsResourceRecord *dnskey, bool mask_revoke);
+
+int dnssec_canonicalize(const char *n, char *buffer, size_t buffer_max);
+
+int dnssec_nsec3_hash(DnsResourceRecord *nsec3, const char *name, void *ret);
+
+typedef enum DnssecNsecResult {
+ DNSSEC_NSEC_NO_RR, /* No suitable NSEC/NSEC3 RR found */
+ DNSSEC_NSEC_CNAME, /* Didn't find what was asked for, but did find CNAME */
+ DNSSEC_NSEC_UNSUPPORTED_ALGORITHM,
+ DNSSEC_NSEC_NXDOMAIN,
+ DNSSEC_NSEC_NODATA,
+ DNSSEC_NSEC_FOUND,
+ DNSSEC_NSEC_OPTOUT,
+} DnssecNsecResult;
+
+int dnssec_nsec_test(DnsAnswer *answer, DnsResourceKey *key, DnssecNsecResult *result, bool *authenticated, uint32_t *ttl);
+
+int dnssec_test_positive_wildcard(DnsAnswer *a, const char *name, const char *source, const char *zone, bool *authenticated);
+
+const char* dnssec_result_to_string(DnssecResult m) _const_;
+DnssecResult dnssec_result_from_string(const char *s) _pure_;
+
+const char* dnssec_verdict_to_string(DnssecVerdict m) _const_;
+DnssecVerdict dnssec_verdict_from_string(const char *s) _pure_;