summaryrefslogtreecommitdiff
path: root/src/resolve/resolved-dns-rr.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/resolve/resolved-dns-rr.c')
-rw-r--r--src/resolve/resolved-dns-rr.c82
1 files changed, 77 insertions, 5 deletions
diff --git a/src/resolve/resolved-dns-rr.c b/src/resolve/resolved-dns-rr.c
index 9b264900fc..4f896b05af 100644
--- a/src/resolve/resolved-dns-rr.c
+++ b/src/resolve/resolved-dns-rr.c
@@ -86,6 +86,37 @@ DnsResourceKey* dns_resource_key_new_redirect(const DnsResourceKey *key, const D
}
}
+int dns_resource_key_new_append_suffix(DnsResourceKey **ret, DnsResourceKey *key, char *name) {
+ DnsResourceKey *new_key;
+ char *joined;
+ int r;
+
+ assert(ret);
+ assert(key);
+ assert(name);
+
+ r = dns_name_root(name);
+ if (r < 0)
+ return r;
+ if (r > 0) {
+ *ret = dns_resource_key_ref(key);
+ return 0;
+ }
+
+ r = dns_name_concat(DNS_RESOURCE_KEY_NAME(key), name, &joined);
+ if (r < 0)
+ return r;
+
+ new_key = dns_resource_key_new_consume(key->class, key->type, joined);
+ if (!new_key) {
+ free(joined);
+ return -ENOMEM;
+ }
+
+ *ret = new_key;
+ return 0;
+}
+
DnsResourceKey* dns_resource_key_new_consume(uint16_t class, uint16_t type, char *name) {
DnsResourceKey *k;
@@ -145,20 +176,42 @@ int dns_resource_key_equal(const DnsResourceKey *a, const DnsResourceKey *b) {
return 1;
}
-int dns_resource_key_match_rr(const DnsResourceKey *key, const DnsResourceRecord *rr) {
+int dns_resource_key_match_rr(const DnsResourceKey *key, const DnsResourceRecord *rr, const char *search_domain) {
+ int r;
+
assert(key);
assert(rr);
+ /* Checks if an rr matches the specified key. If a search
+ * domain is specified, it will also be checked if the key
+ * with the search domain suffixed might match the RR. */
+
if (rr->key->class != key->class && key->class != DNS_CLASS_ANY)
return 0;
if (rr->key->type != key->type && key->type != DNS_TYPE_ANY)
return 0;
- return 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);
+ if (r < 0)
+ return r;
+
+ return dns_name_equal(DNS_RESOURCE_KEY_NAME(rr->key), joined);
+ }
+
+ return 0;
}
-int dns_resource_key_match_cname(const DnsResourceKey *key, const DnsResourceRecord *rr) {
+int dns_resource_key_match_cname(const DnsResourceKey *key, const DnsResourceRecord *rr, const char *search_domain) {
+ int r;
+
assert(key);
assert(rr);
@@ -166,11 +219,30 @@ int dns_resource_key_match_cname(const DnsResourceKey *key, const DnsResourceRec
return 0;
if (rr->key->type == DNS_TYPE_CNAME)
- return dns_name_equal(DNS_RESOURCE_KEY_NAME(key), DNS_RESOURCE_KEY_NAME(rr->key));
+ r = dns_name_equal(DNS_RESOURCE_KEY_NAME(key), DNS_RESOURCE_KEY_NAME(rr->key));
else if (rr->key->type == DNS_TYPE_DNAME)
- return dns_name_endswith(DNS_RESOURCE_KEY_NAME(key), DNS_RESOURCE_KEY_NAME(rr->key));
+ r = dns_name_endswith(DNS_RESOURCE_KEY_NAME(key), DNS_RESOURCE_KEY_NAME(rr->key));
else
return 0;
+
+ 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);
+ if (r < 0)
+ return r;
+
+ if (rr->key->type == DNS_TYPE_CNAME)
+ return dns_name_equal(joined, DNS_RESOURCE_KEY_NAME(rr->key));
+ else if (rr->key->type == DNS_TYPE_DNAME)
+ return dns_name_endswith(joined, DNS_RESOURCE_KEY_NAME(rr->key));
+ }
+
+ return 0;
+
}
static void dns_resource_key_hash_func(const void *i, struct siphash *state) {