diff options
author | Tom Gundersen <teg@jklm.no> | 2015-11-26 23:58:45 +0100 |
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committer | Tom Gundersen <teg@jklm.no> | 2015-11-26 23:58:45 +0100 |
commit | c283267467db7a7fde9d15042b907884118e8fea (patch) | |
tree | 96cd17736b87a93f5d563f30c6008c6914a24981 /src/resolve/resolved-dns-rr.c | |
parent | f7b5b034e8758079ddc7a915394704fc2a350c37 (diff) | |
parent | 422baca0f230913158078fddf884e06c8c64a316 (diff) |
Merge pull request #2031 from poettering/resolved-search-domains
resolved. Fully implement search domains for single-label names
Diffstat (limited to 'src/resolve/resolved-dns-rr.c')
-rw-r--r-- | src/resolve/resolved-dns-rr.c | 79 |
1 files changed, 74 insertions, 5 deletions
diff --git a/src/resolve/resolved-dns-rr.c b/src/resolve/resolved-dns-rr.c index 9b264900fc..4a1abb0cdc 100644 --- a/src/resolve/resolved-dns-rr.c +++ b/src/resolve/resolved-dns-rr.c @@ -86,6 +86,34 @@ 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); + + if (dns_name_is_root(name)) { + *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 +173,42 @@ 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 +216,30 @@ 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) { |