int dns_resource_key_to_string(const DnsResourceKey *key, char **ret) {
char cbuf[strlen("CLASS") + DECIMAL_STR_MAX(uint16_t)], tbuf[strlen("TYPE") + DECIMAL_STR_MAX(uint16_t)];
- const char *c, *t;
+ const char *c, *t, *n;
char *s;
+ /* If we cannot convert the CLASS/TYPE into a known string,
+ use the format recommended by RFC 3597, Section 5. */
+
c = dns_class_to_string(key->class);
if (!c) {
sprintf(cbuf, "CLASS%u", key->class);
t = tbuf;
}
- if (asprintf(&s, "%s. %s %-5s", DNS_RESOURCE_KEY_NAME(key), c, t) < 0)
+ n = DNS_RESOURCE_KEY_NAME(key);
+ if (asprintf(&s, "%s%s %s %-5s", n, endswith(n, ".") ? "" : ".", c, t) < 0)
return -ENOMEM;
*ret = s;
rr->n_ref = 1;
rr->key = dns_resource_key_ref(key);
+ rr->expiry = USEC_INFINITY;
return rr;
}
dns_resource_key_unref(rr->key);
}
+ free(rr->to_string);
free(rr);
return NULL;
return s;
}
-int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
+const char *dns_resource_record_to_string(DnsResourceRecord *rr) {
_cleanup_free_ char *k = NULL, *t = NULL;
char *s;
int r;
assert(rr);
+ if (rr->to_string)
+ return rr->to_string;
+
r = dns_resource_key_to_string(rr->key, &k);
if (r < 0)
- return r;
+ return NULL;
switch (rr->unparseable ? _DNS_TYPE_INVALID : rr->key->type) {
rr->srv.port,
strna(rr->srv.name));
if (r < 0)
- return -ENOMEM;
+ return NULL;
break;
case DNS_TYPE_PTR:
case DNS_TYPE_DNAME:
s = strjoin(k, " ", rr->ptr.name, NULL);
if (!s)
- return -ENOMEM;
+ return NULL;
break;
case DNS_TYPE_HINFO:
s = strjoin(k, " ", rr->hinfo.cpu, " ", rr->hinfo.os, NULL);
if (!s)
- return -ENOMEM;
+ return NULL;
break;
case DNS_TYPE_SPF: /* exactly the same as TXT */
case DNS_TYPE_TXT:
t = format_txt(rr->txt.items);
if (!t)
- return -ENOMEM;
+ return NULL;
s = strjoin(k, " ", t, NULL);
if (!s)
- return -ENOMEM;
+ return NULL;
break;
case DNS_TYPE_A: {
r = in_addr_to_string(AF_INET, (const union in_addr_union*) &rr->a.in_addr, &x);
if (r < 0)
- return r;
+ return NULL;
s = strjoin(k, " ", x, NULL);
if (!s)
- return -ENOMEM;
+ return NULL;
break;
}
case DNS_TYPE_AAAA:
r = in_addr_to_string(AF_INET6, (const union in_addr_union*) &rr->aaaa.in6_addr, &t);
if (r < 0)
- return r;
+ return NULL;
s = strjoin(k, " ", t, NULL);
if (!s)
- return -ENOMEM;
+ return NULL;
break;
case DNS_TYPE_SOA:
rr->soa.expire,
rr->soa.minimum);
if (r < 0)
- return -ENOMEM;
+ return NULL;
break;
case DNS_TYPE_MX:
rr->mx.priority,
rr->mx.exchange);
if (r < 0)
- return -ENOMEM;
+ return NULL;
break;
case DNS_TYPE_LOC:
rr->loc.horiz_pre,
rr->loc.vert_pre);
if (!t)
- return -ENOMEM;
+ return NULL;
s = strjoin(k, " ", t, NULL);
if (!s)
- return -ENOMEM;
+ return NULL;
break;
case DNS_TYPE_DS:
t = hexmem(rr->ds.digest, rr->ds.digest_size);
if (!t)
- return -ENOMEM;
+ return NULL;
r = asprintf(&s, "%s %u %u %u %s",
k,
rr->ds.digest_type,
t);
if (r < 0)
- return -ENOMEM;
+ return NULL;
break;
case DNS_TYPE_SSHFP:
t = hexmem(rr->sshfp.fingerprint, rr->sshfp.fingerprint_size);
if (!t)
- return -ENOMEM;
+ return NULL;
r = asprintf(&s, "%s %u %u %s",
k,
rr->sshfp.fptype,
t);
if (r < 0)
- return -ENOMEM;
+ return NULL;
break;
case DNS_TYPE_DNSKEY: {
- const char *alg;
+ _cleanup_free_ char *alg = NULL;
- alg = dnssec_algorithm_to_string(rr->dnskey.algorithm);
+ r = dnssec_algorithm_to_string_alloc(rr->dnskey.algorithm, &alg);
+ if (r < 0)
+ return NULL;
t = base64mem(rr->dnskey.key, rr->dnskey.key_size);
if (!t)
- return -ENOMEM;
+ return NULL;
- r = asprintf(&s, "%s %u %u %.*s%.*u %s",
+ r = asprintf(&s, "%s %u %u %s %s",
k,
rr->dnskey.flags,
rr->dnskey.protocol,
- alg ? -1 : 0, alg,
- alg ? 0 : 1, alg ? 0u : (unsigned) rr->dnskey.algorithm,
+ alg,
t);
if (r < 0)
- return -ENOMEM;
+ return NULL;
break;
}
case DNS_TYPE_RRSIG: {
- const char *type, *alg;
+ _cleanup_free_ char *alg = NULL;
char expiration[strlen("YYYYMMDDHHmmSS") + 1], inception[strlen("YYYYMMDDHHmmSS") + 1];
+ const char *type;
type = dns_type_to_string(rr->rrsig.type_covered);
- alg = dnssec_algorithm_to_string(rr->rrsig.algorithm);
+
+ r = dnssec_algorithm_to_string_alloc(rr->rrsig.algorithm, &alg);
+ if (r < 0)
+ return NULL;
t = base64mem(rr->rrsig.signature, rr->rrsig.signature_size);
if (!t)
- return -ENOMEM;
+ return NULL;
r = format_timestamp_dns(expiration, sizeof(expiration), rr->rrsig.expiration);
if (r < 0)
- return r;
+ return NULL;
r = format_timestamp_dns(inception, sizeof(inception), rr->rrsig.inception);
if (r < 0)
- return r;
+ return NULL;
/* TYPE?? follows
* http://tools.ietf.org/html/rfc3597#section-5 */
- r = asprintf(&s, "%s %s%.*u %.*s%.*u %u %u %s %s %u %s %s",
+ r = asprintf(&s, "%s %s%.*u %s %u %u %s %s %u %s %s",
k,
type ?: "TYPE",
type ? 0 : 1, type ? 0u : (unsigned) rr->rrsig.type_covered,
- alg ? -1 : 0, alg,
- alg ? 0 : 1, alg ? 0u : (unsigned) rr->rrsig.algorithm,
+ alg,
rr->rrsig.labels,
rr->rrsig.original_ttl,
expiration,
rr->rrsig.signer,
t);
if (r < 0)
- return -ENOMEM;
+ return NULL;
break;
}
case DNS_TYPE_NSEC:
t = format_types(rr->nsec.types);
if (!t)
- return -ENOMEM;
+ return NULL;
r = asprintf(&s, "%s %s %s",
k,
rr->nsec.next_domain_name,
t);
if (r < 0)
- return -ENOMEM;
+ return NULL;
break;
case DNS_TYPE_NSEC3: {
if (rr->nsec3.salt_size > 0) {
salt = hexmem(rr->nsec3.salt, rr->nsec3.salt_size);
if (!salt)
- return -ENOMEM;
+ return NULL;
}
hash = base32hexmem(rr->nsec3.next_hashed_name, rr->nsec3.next_hashed_name_size, false);
if (!hash)
- return -ENOMEM;
+ return NULL;
t = format_types(rr->nsec3.types);
if (!t)
- return -ENOMEM;
+ return NULL;
r = asprintf(&s, "%s %"PRIu8" %"PRIu8" %"PRIu16" %s %s %s",
k,
hash,
t);
if (r < 0)
- return -ENOMEM;
+ return NULL;
break;
}
default:
t = hexmem(rr->generic.data, rr->generic.size);
if (!t)
- return -ENOMEM;
+ return NULL;
+ /* Format as documented in RFC 3597, Section 5 */
r = asprintf(&s, "%s \\# %zu %s", k, rr->generic.size, t);
if (r < 0)
- return -ENOMEM;
+ return NULL;
break;
}
- *ret = s;
- return 0;
+ rr->to_string = s;
+ return s;
}
int dns_resource_record_to_wire_format(DnsResourceRecord *rr, bool canonical) {
return 0;
}
+static void dns_resource_record_hash_func(const void *i, struct siphash *state) {
+ const DnsResourceRecord *rr = i;
+
+ assert(rr);
+
+ dns_resource_key_hash_func(rr->key, state);
+
+ switch (rr->unparseable ? _DNS_TYPE_INVALID : rr->key->type) {
+
+ case DNS_TYPE_SRV:
+ siphash24_compress(&rr->srv.priority, sizeof(rr->srv.priority), state);
+ siphash24_compress(&rr->srv.weight, sizeof(rr->srv.weight), state);
+ siphash24_compress(&rr->srv.port, sizeof(rr->srv.port), state);
+ dns_name_hash_func(rr->srv.name, state);
+ break;
+
+ case DNS_TYPE_PTR:
+ case DNS_TYPE_NS:
+ case DNS_TYPE_CNAME:
+ case DNS_TYPE_DNAME:
+ dns_name_hash_func(rr->ptr.name, state);
+ break;
+
+ case DNS_TYPE_HINFO:
+ string_hash_func(rr->hinfo.cpu, state);
+ string_hash_func(rr->hinfo.os, state);
+ break;
+
+ case DNS_TYPE_TXT:
+ case DNS_TYPE_SPF: {
+ DnsTxtItem *j;
+
+ LIST_FOREACH(items, j, rr->txt.items) {
+ siphash24_compress(j->data, j->length, state);
+
+ /* Add an extra NUL byte, so that "a" followed by "b" doesn't result in the same hash as "ab"
+ * followed by "". */
+ siphash24_compress_byte(0, state);
+ }
+ break;
+ }
+
+ case DNS_TYPE_A:
+ siphash24_compress(&rr->a.in_addr, sizeof(rr->a.in_addr), state);
+ break;
+
+ case DNS_TYPE_AAAA:
+ siphash24_compress(&rr->aaaa.in6_addr, sizeof(rr->aaaa.in6_addr), state);
+ break;
+
+ case DNS_TYPE_SOA:
+ dns_name_hash_func(rr->soa.mname, state);
+ dns_name_hash_func(rr->soa.rname, state);
+ siphash24_compress(&rr->soa.serial, sizeof(rr->soa.serial), state);
+ siphash24_compress(&rr->soa.refresh, sizeof(rr->soa.refresh), state);
+ siphash24_compress(&rr->soa.retry, sizeof(rr->soa.retry), state);
+ siphash24_compress(&rr->soa.expire, sizeof(rr->soa.expire), state);
+ siphash24_compress(&rr->soa.minimum, sizeof(rr->soa.minimum), state);
+ break;
+
+ case DNS_TYPE_MX:
+ siphash24_compress(&rr->mx.priority, sizeof(rr->mx.priority), state);
+ dns_name_hash_func(rr->mx.exchange, state);
+ break;
+
+ case DNS_TYPE_LOC:
+ siphash24_compress(&rr->loc.version, sizeof(rr->loc.version), state);
+ siphash24_compress(&rr->loc.size, sizeof(rr->loc.size), state);
+ siphash24_compress(&rr->loc.horiz_pre, sizeof(rr->loc.horiz_pre), state);
+ siphash24_compress(&rr->loc.vert_pre, sizeof(rr->loc.vert_pre), state);
+ siphash24_compress(&rr->loc.latitude, sizeof(rr->loc.latitude), state);
+ siphash24_compress(&rr->loc.longitude, sizeof(rr->loc.longitude), state);
+ siphash24_compress(&rr->loc.altitude, sizeof(rr->loc.altitude), state);
+ break;
+
+ case DNS_TYPE_SSHFP:
+ siphash24_compress(&rr->sshfp.algorithm, sizeof(rr->sshfp.algorithm), state);
+ siphash24_compress(&rr->sshfp.fptype, sizeof(rr->sshfp.fptype), state);
+ siphash24_compress(rr->sshfp.fingerprint, rr->sshfp.fingerprint_size, state);
+ break;
+
+ case DNS_TYPE_DNSKEY:
+ siphash24_compress(&rr->dnskey.flags, sizeof(rr->dnskey.flags), state);
+ siphash24_compress(&rr->dnskey.protocol, sizeof(rr->dnskey.protocol), state);
+ siphash24_compress(&rr->dnskey.algorithm, sizeof(rr->dnskey.algorithm), state);
+ siphash24_compress(rr->dnskey.key, rr->dnskey.key_size, state);
+ break;
+
+ case DNS_TYPE_RRSIG:
+ siphash24_compress(&rr->rrsig.type_covered, sizeof(rr->rrsig.type_covered), state);
+ siphash24_compress(&rr->rrsig.algorithm, sizeof(rr->rrsig.algorithm), state);
+ siphash24_compress(&rr->rrsig.labels, sizeof(rr->rrsig.labels), state);
+ siphash24_compress(&rr->rrsig.original_ttl, sizeof(rr->rrsig.original_ttl), state);
+ siphash24_compress(&rr->rrsig.expiration, sizeof(rr->rrsig.expiration), state);
+ siphash24_compress(&rr->rrsig.inception, sizeof(rr->rrsig.inception), state);
+ siphash24_compress(&rr->rrsig.key_tag, sizeof(rr->rrsig.key_tag), state);
+ dns_name_hash_func(rr->rrsig.signer, state);
+ siphash24_compress(rr->rrsig.signature, rr->rrsig.signature_size, state);
+ break;
+
+ case DNS_TYPE_NSEC:
+ dns_name_hash_func(rr->nsec.next_domain_name, state);
+ /* FIXME: we leave out the type bitmap here. Hash
+ * would be better if we'd take it into account
+ * too. */
+ break;
+
+ case DNS_TYPE_DS:
+ siphash24_compress(&rr->ds.key_tag, sizeof(rr->ds.key_tag), state);
+ siphash24_compress(&rr->ds.algorithm, sizeof(rr->ds.algorithm), state);
+ siphash24_compress(&rr->ds.digest_type, sizeof(rr->ds.digest_type), state);
+ siphash24_compress(rr->ds.digest, rr->ds.digest_size, state);
+ break;
+
+ case DNS_TYPE_NSEC3:
+ siphash24_compress(&rr->nsec3.algorithm, sizeof(rr->nsec3.algorithm), state);
+ siphash24_compress(&rr->nsec3.flags, sizeof(rr->nsec3.flags), state);
+ siphash24_compress(&rr->nsec3.iterations, sizeof(rr->nsec3.iterations), state);
+ siphash24_compress(rr->nsec3.salt, rr->nsec3.salt_size, state);
+ siphash24_compress(rr->nsec3.next_hashed_name, rr->nsec3.next_hashed_name_size, state);
+ /* FIXME: We leave the bitmaps out */
+ break;
+
+ default:
+ siphash24_compress(rr->generic.data, rr->generic.size, state);
+ break;
+ }
+}
+
+static int dns_resource_record_compare_func(const void *a, const void *b) {
+ const DnsResourceRecord *x = a, *y = b;
+ int ret;
+
+ ret = dns_resource_key_compare_func(x->key, y->key);
+ if (ret != 0)
+ return ret;
+
+ if (dns_resource_record_equal(x, y))
+ return 0;
+
+ /* This is a bit dirty, we don't implement proper odering, but
+ * the hashtable doesn't need ordering anyway, hence we don't
+ * care. */
+ return x < y ? -1 : 1;
+}
+
+const struct hash_ops dns_resource_record_hash_ops = {
+ .hash = dns_resource_record_hash_func,
+ .compare = dns_resource_record_compare_func,
+};
+
DnsTxtItem *dns_txt_item_free_all(DnsTxtItem *i) {
DnsTxtItem *n;
}
static const char* const dnssec_algorithm_table[_DNSSEC_ALGORITHM_MAX_DEFINED] = {
+ /* Mnemonics as listed on https://www.iana.org/assignments/dns-sec-alg-numbers/dns-sec-alg-numbers.xhtml */
[DNSSEC_ALGORITHM_RSAMD5] = "RSAMD5",
[DNSSEC_ALGORITHM_DH] = "DH",
[DNSSEC_ALGORITHM_DSA] = "DSA",
[DNSSEC_ALGORITHM_RSASHA1_NSEC3_SHA1] = "RSASHA1-NSEC3-SHA1",
[DNSSEC_ALGORITHM_RSASHA256] = "RSASHA256",
[DNSSEC_ALGORITHM_RSASHA512] = "RSASHA512",
+ [DNSSEC_ALGORITHM_ECC_GOST] = "ECC-GOST",
+ [DNSSEC_ALGORITHM_ECDSAP256SHA256] = "ECDSAP256SHA256",
+ [DNSSEC_ALGORITHM_ECDSAP384SHA384] = "ECDSAP384SHA384",
[DNSSEC_ALGORITHM_INDIRECT] = "INDIRECT",
[DNSSEC_ALGORITHM_PRIVATEDNS] = "PRIVATEDNS",
[DNSSEC_ALGORITHM_PRIVATEOID] = "PRIVATEOID",
};
-DEFINE_STRING_TABLE_LOOKUP(dnssec_algorithm, int);
+DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(dnssec_algorithm, int, 255);
static const char* const dnssec_digest_table[_DNSSEC_DIGEST_MAX_DEFINED] = {
- [DNSSEC_DIGEST_SHA1] = "SHA1",
- [DNSSEC_DIGEST_SHA256] = "SHA256",
+ /* Names as listed on https://www.iana.org/assignments/ds-rr-types/ds-rr-types.xhtml */
+ [DNSSEC_DIGEST_SHA1] = "SHA-1",
+ [DNSSEC_DIGEST_SHA256] = "SHA-256",
+ [DNSSEC_DIGEST_GOST_R_34_11_94] = "GOST_R_34.11-94",
+ [DNSSEC_DIGEST_SHA384] = "SHA-384",
};
-DEFINE_STRING_TABLE_LOOKUP(dnssec_digest, int);
+DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(dnssec_digest, int, 255);
projects / thirdparty / systemd.git / blobdiff