-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
/***
This file is part of systemd.
#include "alloc-util.h"
#include "dns-domain.h"
#include "dns-type.h"
+#include "escape.h"
#include "hexdecoct.h"
+#include "resolved-dns-dnssec.h"
#include "resolved-dns-packet.h"
#include "resolved-dns-rr.h"
#include "string-table.h"
#include "string-util.h"
#include "strv.h"
+#include "terminal-util.h"
DnsResourceKey* dns_resource_key_new(uint16_t class, uint16_t type, const char *name) {
DnsResourceKey *k;
DnsResourceKey *k;
char *destination = NULL;
- r = dns_name_change_suffix(DNS_RESOURCE_KEY_NAME(key), DNS_RESOURCE_KEY_NAME(cname->key), cname->dname.name, &destination);
+ r = dns_name_change_suffix(dns_resource_key_name(key), dns_resource_key_name(cname->key), cname->dname.name, &destination);
if (r < 0)
return NULL;
if (r == 0)
return 0;
}
- r = dns_name_concat(DNS_RESOURCE_KEY_NAME(key), name, &joined);
+ r = dns_name_concat(dns_resource_key_name(key), name, &joined);
if (r < 0)
return r;
return NULL;
}
+const char* dns_resource_key_name(const DnsResourceKey *key) {
+ const char *name;
+
+ if (!key)
+ return NULL;
+
+ if (key->_name)
+ name = key->_name;
+ else
+ name = (char*) key + sizeof(DnsResourceKey);
+
+ if (dns_name_is_root(name))
+ return ".";
+ else
+ return name;
+}
+
bool dns_resource_key_is_address(const DnsResourceKey *key) {
assert(key);
if (a == b)
return 1;
- r = dns_name_equal(DNS_RESOURCE_KEY_NAME(a), DNS_RESOURCE_KEY_NAME(b));
+ r = dns_name_equal(dns_resource_key_name(a), dns_resource_key_name(b));
if (r <= 0)
return r;
return 1;
}
-int dns_resource_key_match_rr(const DnsResourceKey *key, const DnsResourceRecord *rr, const char *search_domain) {
+int dns_resource_key_match_rr(const DnsResourceKey *key, DnsResourceRecord *rr, const char *search_domain) {
int r;
assert(key);
if (rr->key->type != key->type && key->type != DNS_TYPE_ANY)
return 0;
- r = dns_name_equal(DNS_RESOURCE_KEY_NAME(rr->key), DNS_RESOURCE_KEY_NAME(key));
+ r = dns_name_equal(dns_resource_key_name(rr->key), dns_resource_key_name(key));
if (r != 0)
return r;
if (search_domain) {
_cleanup_free_ char *joined = NULL;
- r = dns_name_concat(DNS_RESOURCE_KEY_NAME(key), search_domain, &joined);
+ r = dns_name_concat(dns_resource_key_name(key), search_domain, &joined);
if (r < 0)
return r;
- return dns_name_equal(DNS_RESOURCE_KEY_NAME(rr->key), joined);
+ return dns_name_equal(dns_resource_key_name(rr->key), joined);
}
return 0;
return 0;
if (cname->type == DNS_TYPE_CNAME)
- r = dns_name_equal(DNS_RESOURCE_KEY_NAME(key), DNS_RESOURCE_KEY_NAME(cname));
+ r = dns_name_equal(dns_resource_key_name(key), dns_resource_key_name(cname));
else if (cname->type == DNS_TYPE_DNAME)
- r = dns_name_endswith(DNS_RESOURCE_KEY_NAME(key), DNS_RESOURCE_KEY_NAME(cname));
+ r = dns_name_endswith(dns_resource_key_name(key), dns_resource_key_name(cname));
else
return 0;
if (search_domain) {
_cleanup_free_ char *joined = NULL;
- r = dns_name_concat(DNS_RESOURCE_KEY_NAME(key), search_domain, &joined);
+ r = dns_name_concat(dns_resource_key_name(key), search_domain, &joined);
if (r < 0)
return r;
if (cname->type == DNS_TYPE_CNAME)
- return dns_name_equal(joined, DNS_RESOURCE_KEY_NAME(cname));
+ return dns_name_equal(joined, dns_resource_key_name(cname));
else if (cname->type == DNS_TYPE_DNAME)
- return dns_name_endswith(joined, DNS_RESOURCE_KEY_NAME(cname));
+ return dns_name_endswith(joined, dns_resource_key_name(cname));
}
return 0;
/* Checks whether 'soa' is a SOA record for the specified key. */
- if (soa->class != DNS_CLASS_IN)
+ if (soa->class != key->class)
return 0;
if (soa->type != DNS_TYPE_SOA)
return 0;
- if (!dns_name_endswith(DNS_RESOURCE_KEY_NAME(key), DNS_RESOURCE_KEY_NAME(soa)))
- return 0;
-
- return 1;
+ return dns_name_endswith(dns_resource_key_name(key), dns_resource_key_name(soa));
}
static void dns_resource_key_hash_func(const void *i, struct siphash *state) {
assert(k);
- dns_name_hash_func(DNS_RESOURCE_KEY_NAME(k), state);
+ dns_name_hash_func(dns_resource_key_name(k), state);
siphash24_compress(&k->class, sizeof(k->class), state);
siphash24_compress(&k->type, sizeof(k->type), state);
}
const DnsResourceKey *x = a, *y = b;
int ret;
- ret = dns_name_compare_func(DNS_RESOURCE_KEY_NAME(x), DNS_RESOURCE_KEY_NAME(y));
+ ret = dns_name_compare_func(dns_resource_key_name(x), dns_resource_key_name(y));
if (ret != 0)
return ret;
.compare = dns_resource_key_compare_func
};
-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)];
+char* dns_resource_key_to_string(const DnsResourceKey *key, char *buf, size_t buf_size) {
const char *c, *t;
- char *s;
+ char *ans = buf;
- c = dns_class_to_string(key->class);
- if (!c) {
- sprintf(cbuf, "CLASS%u", key->class);
- c = cbuf;
- }
+ /* 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);
t = dns_type_to_string(key->type);
- if (!t){
- sprintf(tbuf, "TYPE%u", key->type);
- t = tbuf;
- }
- if (asprintf(&s, "%s. %s %-5s", DNS_RESOURCE_KEY_NAME(key), c, t) < 0)
- return -ENOMEM;
+ snprintf(buf, buf_size, "%s %s%s%.0u %s%s%.0u",
+ dns_resource_key_name(key),
+ c ?: "", c ? "" : "CLASS", c ? 0 : key->class,
+ t ?: "", t ? "" : "TYPE", t ? 0 : key->class);
- *ret = s;
- return 0;
+ return ans;
+}
+
+bool dns_resource_key_reduce(DnsResourceKey **a, DnsResourceKey **b) {
+ assert(a);
+ assert(b);
+
+ /* Try to replace one RR key by another if they are identical, thus saving a bit of memory. Note that we do
+ * this only for RR keys, not for RRs themselves, as they carry a lot of additional metadata (where they come
+ * from, validity data, and suchlike), and cannot be replaced so easily by other RRs that have the same
+ * superficial data. */
+
+ if (!*a)
+ return false;
+ if (!*b)
+ return false;
+
+ /* We refuse merging const keys */
+ if ((*a)->n_ref == (unsigned) -1)
+ return false;
+ if ((*b)->n_ref == (unsigned) -1)
+ return false;
+
+ /* Already the same? */
+ if (*a == *b)
+ return true;
+
+ /* Are they really identical? */
+ if (dns_resource_key_equal(*a, *b) <= 0)
+ return false;
+
+ /* Keep the one which already has more references. */
+ if ((*a)->n_ref > (*b)->n_ref) {
+ dns_resource_key_unref(*b);
+ *b = dns_resource_key_ref(*a);
+ } else {
+ dns_resource_key_unref(*a);
+ *a = dns_resource_key_ref(*b);
+ }
+
+ return true;
}
DnsResourceRecord* dns_resource_record_new(DnsResourceKey *key) {
rr->n_ref = 1;
rr->key = dns_resource_key_ref(key);
+ rr->expiry = USEC_INFINITY;
+ rr->n_skip_labels_signer = rr->n_skip_labels_source = (unsigned) -1;
return rr;
}
case DNS_TYPE_AAAA:
break;
+ case DNS_TYPE_TLSA:
+ free(rr->tlsa.data);
+ break;
+
+ case DNS_TYPE_CAA:
+ free(rr->caa.tag);
+ free(rr->caa.value);
+ break;
+
+ case DNS_TYPE_OPENPGPKEY:
default:
free(rr->generic.data);
}
dns_resource_key_unref(rr->key);
}
+ free(rr->to_string);
free(rr);
return NULL;
return 0;
}
+#define FIELD_EQUAL(a, b, field) \
+ ((a).field ## _size == (b).field ## _size && \
+ memcmp((a).field, (b).field, (a).field ## _size) == 0)
+
int dns_resource_record_equal(const DnsResourceRecord *a, const DnsResourceRecord *b) {
int r;
return a->ds.key_tag == b->ds.key_tag &&
a->ds.algorithm == b->ds.algorithm &&
a->ds.digest_type == b->ds.digest_type &&
- a->ds.digest_size == b->ds.digest_size &&
- memcmp(a->ds.digest, b->ds.digest, a->ds.digest_size) == 0;
+ FIELD_EQUAL(a->ds, b->ds, digest);
case DNS_TYPE_SSHFP:
return a->sshfp.algorithm == b->sshfp.algorithm &&
a->sshfp.fptype == b->sshfp.fptype &&
- a->sshfp.fingerprint_size == b->sshfp.fingerprint_size &&
- memcmp(a->sshfp.fingerprint, b->sshfp.fingerprint, a->sshfp.fingerprint_size) == 0;
+ FIELD_EQUAL(a->sshfp, b->sshfp, fingerprint);
case DNS_TYPE_DNSKEY:
return a->dnskey.flags == b->dnskey.flags &&
a->dnskey.protocol == b->dnskey.protocol &&
a->dnskey.algorithm == b->dnskey.algorithm &&
- a->dnskey.key_size == b->dnskey.key_size &&
- memcmp(a->dnskey.key, b->dnskey.key, a->dnskey.key_size) == 0;
+ FIELD_EQUAL(a->dnskey, b->dnskey, key);
case DNS_TYPE_RRSIG:
/* do the fast comparisons first */
- if (a->rrsig.type_covered != b->rrsig.type_covered ||
- a->rrsig.algorithm != b->rrsig.algorithm ||
- a->rrsig.labels != b->rrsig.labels ||
- a->rrsig.original_ttl != b->rrsig.original_ttl ||
- a->rrsig.expiration != b->rrsig.expiration ||
- a->rrsig.inception != b->rrsig.inception ||
- a->rrsig.key_tag != b->rrsig.key_tag ||
- a->rrsig.signature_size != b->rrsig.signature_size ||
- memcmp(a->rrsig.signature, b->rrsig.signature, a->rrsig.signature_size) != 0)
- return false;
-
- return dns_name_equal(a->rrsig.signer, b->rrsig.signer);
+ return a->rrsig.type_covered == b->rrsig.type_covered &&
+ a->rrsig.algorithm == b->rrsig.algorithm &&
+ a->rrsig.labels == b->rrsig.labels &&
+ a->rrsig.original_ttl == b->rrsig.original_ttl &&
+ a->rrsig.expiration == b->rrsig.expiration &&
+ a->rrsig.inception == b->rrsig.inception &&
+ a->rrsig.key_tag == b->rrsig.key_tag &&
+ FIELD_EQUAL(a->rrsig, b->rrsig, signature) &&
+ dns_name_equal(a->rrsig.signer, b->rrsig.signer);
case DNS_TYPE_NSEC:
return dns_name_equal(a->nsec.next_domain_name, b->nsec.next_domain_name) &&
case DNS_TYPE_NSEC3:
return a->nsec3.algorithm == b->nsec3.algorithm &&
- a->nsec3.flags == b->nsec3.flags &&
- a->nsec3.iterations == b->nsec3.iterations &&
- a->nsec3.salt_size == b->nsec3.salt_size &&
- memcmp(a->nsec3.salt, b->nsec3.salt, a->nsec3.salt_size) == 0 &&
- memcmp(a->nsec3.next_hashed_name, b->nsec3.next_hashed_name, a->nsec3.next_hashed_name_size) == 0 &&
- bitmap_equal(a->nsec3.types, b->nsec3.types);
-
+ a->nsec3.flags == b->nsec3.flags &&
+ a->nsec3.iterations == b->nsec3.iterations &&
+ FIELD_EQUAL(a->nsec3, b->nsec3, salt) &&
+ FIELD_EQUAL(a->nsec3, b->nsec3, next_hashed_name) &&
+ bitmap_equal(a->nsec3.types, b->nsec3.types);
+
+ case DNS_TYPE_TLSA:
+ return a->tlsa.cert_usage == b->tlsa.cert_usage &&
+ a->tlsa.selector == b->tlsa.selector &&
+ a->tlsa.matching_type == b->tlsa.matching_type &&
+ FIELD_EQUAL(a->tlsa, b->tlsa, data);
+
+ case DNS_TYPE_CAA:
+ return a->caa.flags == b->caa.flags &&
+ streq(a->caa.tag, b->caa.tag) &&
+ FIELD_EQUAL(a->caa, b->caa, value);
+
+ case DNS_TYPE_OPENPGPKEY:
default:
- return a->generic.size == b->generic.size &&
- memcmp(a->generic.data, b->generic.data, a->generic.size) == 0;
+ return FIELD_EQUAL(a->generic, b->generic, data);
}
}
return s;
}
-int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
- _cleanup_free_ char *k = NULL, *t = NULL;
- char *s;
+const char *dns_resource_record_to_string(DnsResourceRecord *rr) {
+ _cleanup_free_ char *t = NULL;
+ char *s, k[DNS_RESOURCE_KEY_STRING_MAX];
int r;
assert(rr);
- r = dns_resource_key_to_string(rr->key, &k);
- if (r < 0)
- return r;
+ if (rr->to_string)
+ return rr->to_string;
+
+ dns_resource_key_to_string(rr->key, k, sizeof(k));
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;
+ char *ss;
+ int n;
+ uint16_t key_tag;
- alg = dnssec_algorithm_to_string(rr->dnskey.algorithm);
+ key_tag = dnssec_keytag(rr, true);
- t = base64mem(rr->dnskey.key, rr->dnskey.key_size);
- if (!t)
- return -ENOMEM;
+ r = dnssec_algorithm_to_string_alloc(rr->dnskey.algorithm, &alg);
+ if (r < 0)
+ return NULL;
- r = asprintf(&s, "%s %u %u %.*s%.*u %s",
+ r = asprintf(&s, "%s %u %u %s %n",
k,
rr->dnskey.flags,
rr->dnskey.protocol,
- alg ? -1 : 0, alg,
- alg ? 0 : 1, alg ? 0u : (unsigned) rr->dnskey.algorithm,
- t);
+ alg,
+ &n);
if (r < 0)
- return -ENOMEM;
+ return NULL;
+
+ r = base64_append(&s, n,
+ rr->dnskey.key, rr->dnskey.key_size,
+ 8, columns());
+ if (r < 0)
+ return NULL;
+
+ r = asprintf(&ss, "%s\n"
+ " -- Flags:%s%s%s\n"
+ " -- Key tag: %u",
+ s,
+ rr->dnskey.flags & DNSKEY_FLAG_SEP ? " SEP" : "",
+ rr->dnskey.flags & DNSKEY_FLAG_REVOKE ? " REVOKE" : "",
+ rr->dnskey.flags & DNSKEY_FLAG_ZONE_KEY ? " ZONE_KEY" : "",
+ key_tag);
+ if (r < 0)
+ return NULL;
+ free(s);
+ s = ss;
+
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;
+ int n;
type = dns_type_to_string(rr->rrsig.type_covered);
- alg = dnssec_algorithm_to_string(rr->rrsig.algorithm);
- t = base64mem(rr->rrsig.signature, rr->rrsig.signature_size);
- if (!t)
- return -ENOMEM;
+ r = dnssec_algorithm_to_string_alloc(rr->rrsig.algorithm, &alg);
+ if (r < 0)
+ 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 %n",
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,
inception,
rr->rrsig.key_tag,
rr->rrsig.signer,
- t);
+ &n);
if (r < 0)
- return -ENOMEM;
+ return NULL;
+
+ r = base64_append(&s, n,
+ rr->rrsig.signature, rr->rrsig.signature_size,
+ 8, columns());
+ if (r < 0)
+ 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;
+ }
+
+ case DNS_TYPE_TLSA: {
+ const char *cert_usage, *selector, *matching_type;
+
+ cert_usage = tlsa_cert_usage_to_string(rr->tlsa.cert_usage);
+ selector = tlsa_selector_to_string(rr->tlsa.selector);
+ matching_type = tlsa_matching_type_to_string(rr->tlsa.matching_type);
+
+ t = hexmem(rr->sshfp.fingerprint, rr->sshfp.fingerprint_size);
+ if (!t)
+ return NULL;
+
+ r = asprintf(&s,
+ "%s %u %u %u %s\n"
+ " -- Cert. usage: %s\n"
+ " -- Selector: %s\n"
+ " -- Matching type: %s",
+ k,
+ rr->tlsa.cert_usage,
+ rr->tlsa.selector,
+ rr->tlsa.matching_type,
+ t,
+ cert_usage,
+ selector,
+ matching_type);
+ if (r < 0)
+ return NULL;
break;
}
+ case DNS_TYPE_CAA: {
+ _cleanup_free_ char *value;
+
+ value = octescape(rr->caa.value, rr->caa.value_size);
+ if (!value)
+ return NULL;
+
+ r = asprintf(&s, "%s %u %s \"%s\"%s%s%s%.0u",
+ k,
+ rr->caa.flags,
+ rr->caa.tag,
+ value,
+ rr->caa.flags ? "\n -- Flags:" : "",
+ rr->caa.flags & CAA_FLAG_CRITICAL ? " critical" : "",
+ rr->caa.flags & ~CAA_FLAG_CRITICAL ? " " : "",
+ rr->caa.flags & ~CAA_FLAG_CRITICAL);
+ if (r < 0)
+ return NULL;
+
+ break;
+ }
+
+ case DNS_TYPE_OPENPGPKEY: {
+ int n;
+
+ r = asprintf(&s, "%s %n",
+ k,
+ &n);
+ if (r < 0)
+ return NULL;
+
+ r = base64_append(&s, n,
+ rr->generic.data, rr->generic.data_size,
+ 8, columns());
+ if (r < 0)
+ return NULL;
+ break;
+ }
+
default:
- t = hexmem(rr->generic.data, rr->generic.size);
+ t = hexmem(rr->generic.data, rr->generic.data_size);
if (!t)
- return -ENOMEM;
+ return NULL;
- r = asprintf(&s, "%s \\# %zu %s", k, rr->generic.size, t);
+ /* Format as documented in RFC 3597, Section 5 */
+ r = asprintf(&s, "%s \\# %zu %s", k, rr->generic.data_size, t);
if (r < 0)
- return -ENOMEM;
+ return NULL;
break;
}
- *ret = s;
- return 0;
+ rr->to_string = s;
+ return s;
+}
+
+ssize_t dns_resource_record_payload(DnsResourceRecord *rr, void **out) {
+ assert(rr);
+ assert(out);
+
+ switch(rr->unparseable ? _DNS_TYPE_INVALID : rr->key->type) {
+ case DNS_TYPE_SRV:
+ case DNS_TYPE_PTR:
+ case DNS_TYPE_NS:
+ case DNS_TYPE_CNAME:
+ case DNS_TYPE_DNAME:
+ case DNS_TYPE_HINFO:
+ case DNS_TYPE_SPF:
+ case DNS_TYPE_TXT:
+ case DNS_TYPE_A:
+ case DNS_TYPE_AAAA:
+ case DNS_TYPE_SOA:
+ case DNS_TYPE_MX:
+ case DNS_TYPE_LOC:
+ case DNS_TYPE_DS:
+ case DNS_TYPE_DNSKEY:
+ case DNS_TYPE_RRSIG:
+ case DNS_TYPE_NSEC:
+ case DNS_TYPE_NSEC3:
+ return -EINVAL;
+
+ case DNS_TYPE_SSHFP:
+ *out = rr->sshfp.fingerprint;
+ return rr->sshfp.fingerprint_size;
+
+ case DNS_TYPE_TLSA:
+ *out = rr->tlsa.data;
+ return rr->tlsa.data_size;
+
+
+ case DNS_TYPE_OPENPGPKEY:
+ default:
+ *out = rr->generic.data;
+ return rr->generic.data_size;
+ }
}
int dns_resource_record_to_wire_format(DnsResourceRecord *rr, bool canonical) {
return 0;
}
-const char *dns_class_to_string(uint16_t class) {
+int dns_resource_record_signer(DnsResourceRecord *rr, const char **ret) {
+ const char *n;
+ int r;
- switch (class) {
+ assert(rr);
+ assert(ret);
- case DNS_CLASS_IN:
- return "IN";
+ /* Returns the RRset's signer, if it is known. */
- case DNS_CLASS_ANY:
- return "ANY";
- }
+ if (rr->n_skip_labels_signer == (unsigned) -1)
+ return -ENODATA;
- return NULL;
+ n = dns_resource_key_name(rr->key);
+ r = dns_name_skip(n, rr->n_skip_labels_signer, &n);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return -EINVAL;
+
+ *ret = n;
+ return 0;
}
-int dns_class_from_string(const char *s, uint16_t *class) {
- assert(s);
- assert(class);
+int dns_resource_record_source(DnsResourceRecord *rr, const char **ret) {
+ const char *n;
+ int r;
- if (strcaseeq(s, "IN"))
- *class = DNS_CLASS_IN;
- else if (strcaseeq(s, "ANY"))
- *class = DNS_CLASS_ANY;
- else
+ assert(rr);
+ assert(ret);
+
+ /* Returns the RRset's synthesizing source, if it is known. */
+
+ if (rr->n_skip_labels_source == (unsigned) -1)
+ return -ENODATA;
+
+ n = dns_resource_key_name(rr->key);
+ r = dns_name_skip(n, rr->n_skip_labels_source, &n);
+ if (r < 0)
+ return r;
+ if (r == 0)
return -EINVAL;
+ *ret = n;
return 0;
}
+int dns_resource_record_is_signer(DnsResourceRecord *rr, const char *zone) {
+ const char *signer;
+ int r;
+
+ assert(rr);
+
+ r = dns_resource_record_signer(rr, &signer);
+ if (r < 0)
+ return r;
+
+ return dns_name_equal(zone, signer);
+}
+
+int dns_resource_record_is_synthetic(DnsResourceRecord *rr) {
+ int r;
+
+ assert(rr);
+
+ /* Returns > 0 if the RR is generated from a wildcard, and is not the asterisk name itself */
+
+ if (rr->n_skip_labels_source == (unsigned) -1)
+ return -ENODATA;
+
+ if (rr->n_skip_labels_source == 0)
+ return 0;
+
+ if (rr->n_skip_labels_source > 1)
+ return 1;
+
+ r = dns_name_startswith(dns_resource_key_name(rr->key), "*");
+ if (r < 0)
+ return r;
+
+ return !r;
+}
+
+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;
+
+ case DNS_TYPE_TLSA:
+ siphash24_compress(&rr->tlsa.cert_usage, sizeof(rr->tlsa.cert_usage), state);
+ siphash24_compress(&rr->tlsa.selector, sizeof(rr->tlsa.selector), state);
+ siphash24_compress(&rr->tlsa.matching_type, sizeof(rr->tlsa.matching_type), state);
+ siphash24_compress(rr->tlsa.data, rr->tlsa.data_size, state);
+ break;
+
+ case DNS_TYPE_CAA:
+ siphash24_compress(&rr->caa.flags, sizeof(rr->caa.flags), state);
+ string_hash_func(rr->caa.tag, state);
+ siphash24_compress(rr->caa.value, rr->caa.value_size, state);
+ break;
+
+ case DNS_TYPE_OPENPGPKEY:
+ default:
+ siphash24_compress(rr->generic.data, rr->generic.data_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 ordering, 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