-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
+/* SPDX-License-Identifier: LGPL-2.1+ */
/***
This file is part of systemd.
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
+#include <sys/socket.h>
+#include <errno.h>
+
#include "dns-type.h"
+#include "parse-util.h"
#include "string-util.h"
typedef const struct {
} dns_type;
static const struct dns_type_name *
-lookup_dns_type (register const char *str, register unsigned int len);
+lookup_dns_type (register const char *str, register GPERF_LEN_TYPE len);
#include "dns_type-from-name.h"
#include "dns_type-to-name.h"
assert(s);
sc = lookup_dns_type(s, strlen(s));
- if (!sc)
- return _DNS_TYPE_INVALID;
+ if (sc)
+ return sc->id;
+
+ s = startswith_no_case(s, "TYPE");
+ if (s) {
+ unsigned x;
+
+ if (safe_atou(s, &x) >= 0 &&
+ x <= UINT16_MAX)
+ return (int) x;
+ }
- return sc->id;
+ return _DNS_TYPE_INVALID;
}
bool dns_type_is_pseudo(uint16_t type) {
DNS_TYPE_RRSIG);
}
+bool dns_type_is_zone_transer(uint16_t type) {
+
+ /* Zone transfers, either normal or incremental */
+
+ return IN_SET(type,
+ DNS_TYPE_AXFR,
+ DNS_TYPE_IXFR);
+}
+
bool dns_type_is_valid_rr(uint16_t type) {
/* The types valid as RR in packets (but not necessarily
DNS_TYPE_DNAME);
}
+bool dns_type_apex_only(uint16_t type) {
+
+ /* Returns true for all RR types that may only appear signed in a zone apex */
+
+ return IN_SET(type,
+ DNS_TYPE_SOA,
+ DNS_TYPE_NS, /* this one can appear elsewhere, too, but not signed */
+ DNS_TYPE_DNSKEY,
+ DNS_TYPE_NSEC3PARAM);
+}
+
bool dns_type_is_dnssec(uint16_t type) {
return IN_SET(type,
DNS_TYPE_DS,
DNS_TYPE_NULL);
}
+bool dns_type_needs_authentication(uint16_t type) {
+
+ /* Returns true for all (non-obsolete) RR types where records are not useful if they aren't
+ * authenticated. I.e. everything that contains crypto keys. */
+
+ return IN_SET(type,
+ DNS_TYPE_CERT,
+ DNS_TYPE_SSHFP,
+ DNS_TYPE_IPSECKEY,
+ DNS_TYPE_DS,
+ DNS_TYPE_DNSKEY,
+ DNS_TYPE_TLSA,
+ DNS_TYPE_CDNSKEY,
+ DNS_TYPE_OPENPGPKEY,
+ DNS_TYPE_CAA);
+}
+
+int dns_type_to_af(uint16_t t) {
+ switch (t) {
+
+ case DNS_TYPE_A:
+ return AF_INET;
+
+ case DNS_TYPE_AAAA:
+ return AF_INET6;
+
+ case DNS_TYPE_ANY:
+ return AF_UNSPEC;
+
+ default:
+ return -EINVAL;
+ }
+}
+
const char *dns_class_to_string(uint16_t class) {
switch (class) {
return _DNS_CLASS_INVALID;
}
+
+const char* tlsa_cert_usage_to_string(uint8_t cert_usage) {
+
+ switch (cert_usage) {
+
+ case 0:
+ return "CA constraint";
+
+ case 1:
+ return "Service certificate constraint";
+
+ case 2:
+ return "Trust anchor assertion";
+
+ case 3:
+ return "Domain-issued certificate";
+
+ case 4 ... 254:
+ return "Unassigned";
+
+ case 255:
+ return "Private use";
+ }
+
+ return NULL; /* clang cannot count that we covered everything */
+}
+
+const char* tlsa_selector_to_string(uint8_t selector) {
+ switch (selector) {
+
+ case 0:
+ return "Full Certificate";
+
+ case 1:
+ return "SubjectPublicKeyInfo";
+
+ case 2 ... 254:
+ return "Unassigned";
+
+ case 255:
+ return "Private use";
+ }
+
+ return NULL;
+}
+
+const char* tlsa_matching_type_to_string(uint8_t selector) {
+
+ switch (selector) {
+
+ case 0:
+ return "No hash used";
+
+ case 1:
+ return "SHA-256";
+
+ case 2:
+ return "SHA-512";
+
+ case 3 ... 254:
+ return "Unassigned";
+
+ case 255:
+ return "Private use";
+ }
+
+ return NULL;
+}