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Code

resolved: properly set TTL in SOA records

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This commit is contained in:
Lennart Poettering 2014-07-30 19:34:50 +02:00
parent fcf57f9cf7
commit 57f5ad3149
5 changed files with 10 additions and 8 deletions
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6
src/resolve/resolved-dns-answer.c
View File

@ -97,13 +97,15 @@ int dns_answer_add(DnsAnswer *a, DnsResourceRecord *rr) {
return 1;
}
int dns_answer_add_soa(DnsAnswer *a, const char *name) {
int dns_answer_add_soa(DnsAnswer *a, const char *name, uint32_t ttl) {
_cleanup_(dns_resource_record_unrefp) DnsResourceRecord *soa = NULL;
soa = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_SOA, name);
if (!soa)
return -ENOMEM;
soa->ttl = ttl;
soa->soa.mname = strdup(name);
if (!soa->soa.mname)
return -ENOMEM;
@ -116,7 +118,7 @@ int dns_answer_add_soa(DnsAnswer *a, const char *name) {
soa->soa.refresh = 1;
soa->soa.retry = 1;
soa->soa.expire = 1;
soa->soa.minimum = 1;
soa->soa.minimum = ttl;
return dns_answer_add(a, soa);
}

2
src/resolve/resolved-dns-answer.h
View File

@ -38,7 +38,7 @@ DnsAnswer *dns_answer_ref(DnsAnswer *a);
DnsAnswer *dns_answer_unref(DnsAnswer *a);
int dns_answer_add(DnsAnswer *a, DnsResourceRecord *rr);
int dns_answer_add_soa(DnsAnswer *a, const char *name);
int dns_answer_add_soa(DnsAnswer *a, const char *name, uint32_t ttl);
int dns_answer_contains(DnsAnswer *a, DnsResourceKey *key);
int dns_answer_find_soa(DnsAnswer *a, DnsResourceKey *key, DnsResourceRecord **ret);

4
src/resolve/resolved-dns-zone.c
View File

@ -275,7 +275,7 @@ int dns_zone_lookup(DnsZone *z, DnsQuestion *q, DnsAnswer **ret_answer, DnsAnswe
if (k < 0)
return k;
if (k == 0)
r = dns_answer_add_soa(soa, DNS_RESOURCE_KEY_NAME(q->keys[i]));
r = dns_answer_add_soa(soa, DNS_RESOURCE_KEY_NAME(q->keys[i]), LLMNR_DEFAULT_TTL);
else
r = dns_answer_add(answer, j->rr);
if (r < 0)
@ -292,7 +292,7 @@ int dns_zone_lookup(DnsZone *z, DnsQuestion *q, DnsAnswer **ret_answer, DnsAnswe
}
} else {
if (hashmap_get(z->by_name, DNS_RESOURCE_KEY_NAME(q->keys[i]))) {
r = dns_answer_add_soa(soa, DNS_RESOURCE_KEY_NAME(q->keys[i]));
r = dns_answer_add_soa(soa, DNS_RESOURCE_KEY_NAME(q->keys[i]), LLMNR_DEFAULT_TTL);
if (r < 0)
return r;
}

3
src/resolve/resolved-dns-zone.h
View File

@ -38,3 +38,6 @@ int dns_zone_put(DnsZone *z, DnsResourceRecord *rr);
void dns_zone_remove_rr(DnsZone *z, DnsResourceRecord *rr);
int dns_zone_lookup(DnsZone *z, DnsQuestion *q, DnsAnswer **answer, DnsAnswer **soa);
/* RFC 4795 Section 2.8. suggests a TTL of 30s by default */
#define LLMNR_DEFAULT_TTL (30)

3
src/resolve/resolved-link.c
View File

@ -25,9 +25,6 @@
#include "strv.h"
#include "resolved-link.h"
/* RFC 4795 Section 2.8. suggests a TTL of 30s by default */
#define LLMNR_DEFAULT_TTL (30)
static void link_address_add_rrs(LinkAddress *a);
int link_new(Manager *m, Link **ret, int ifindex) {