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path: root/src/resolve/resolved-dns-rr.c
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Diffstat (limited to 'src/resolve/resolved-dns-rr.c')
-rw-r--r--src/resolve/resolved-dns-rr.c74
1 files changed, 39 insertions, 35 deletions
diff --git a/src/resolve/resolved-dns-rr.c b/src/resolve/resolved-dns-rr.c
index 067fb1cd08..04d442bf03 100644
--- a/src/resolve/resolved-dns-rr.c
+++ b/src/resolve/resolved-dns-rr.c
@@ -448,6 +448,7 @@ DnsResourceRecord* dns_resource_record_unref(DnsResourceRecord *rr) {
dns_resource_key_unref(rr->key);
}
+ free(rr->to_string);
free(rr);
return NULL;
@@ -763,16 +764,19 @@ static char *format_txt(DnsTxtItem *first) {
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) {
@@ -784,7 +788,7 @@ int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
rr->srv.port,
strna(rr->srv.name));
if (r < 0)
- return -ENOMEM;
+ return NULL;
break;
case DNS_TYPE_PTR:
@@ -793,25 +797,25 @@ int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
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: {
@@ -819,22 +823,22 @@ int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
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:
@@ -848,7 +852,7 @@ int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
rr->soa.expire,
rr->soa.minimum);
if (r < 0)
- return -ENOMEM;
+ return NULL;
break;
case DNS_TYPE_MX:
@@ -857,7 +861,7 @@ int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
rr->mx.priority,
rr->mx.exchange);
if (r < 0)
- return -ENOMEM;
+ return NULL;
break;
case DNS_TYPE_LOC:
@@ -870,17 +874,17 @@ int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
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,
@@ -889,13 +893,13 @@ int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
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,
@@ -903,7 +907,7 @@ int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
rr->sshfp.fptype,
t);
if (r < 0)
- return -ENOMEM;
+ return NULL;
break;
case DNS_TYPE_DNSKEY: {
@@ -913,7 +917,7 @@ int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
t = base64mem(rr->dnskey.key, rr->dnskey.key_size);
if (!t)
- return -ENOMEM;
+ return NULL;
r = asprintf(&s, "%s %u %u %.*s%.*u %s",
k,
@@ -923,7 +927,7 @@ int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
alg ? 0 : 1, alg ? 0u : (unsigned) rr->dnskey.algorithm,
t);
if (r < 0)
- return -ENOMEM;
+ return NULL;
break;
}
@@ -936,15 +940,15 @@ int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
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 */
@@ -963,21 +967,21 @@ int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
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: {
@@ -986,16 +990,16 @@ int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
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,
@@ -1006,7 +1010,7 @@ int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
hash,
t);
if (r < 0)
- return -ENOMEM;
+ return NULL;
break;
}
@@ -1014,16 +1018,16 @@ int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) {
default:
t = hexmem(rr->generic.data, rr->generic.size);
if (!t)
- return -ENOMEM;
+ return NULL;
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) {
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-16 04:00:21 +0000