diff options
Diffstat (limited to 'src/resolve/resolved-dns-scope.c')
-rw-r--r-- | src/resolve/resolved-dns-scope.c | 58 |
1 files changed, 26 insertions, 32 deletions
diff --git a/src/resolve/resolved-dns-scope.c b/src/resolve/resolved-dns-scope.c index 750409eebf..ffaefbe3f2 100644 --- a/src/resolve/resolved-dns-scope.c +++ b/src/resolve/resolved-dns-scope.c @@ -793,15 +793,8 @@ DnsTransaction *dns_scope_find_transaction(DnsScope *scope, DnsResourceKey *key, /* Try to find an ongoing transaction that is a equal to the * specified question */ t = hashmap_get(scope->transactions_by_key, key); - if (!t) { - DnsResourceKey *key_any; - - key_any = dns_resource_key_new(DNS_CLASS_IN, DNS_TYPE_ANY, dns_resource_key_name(key)); - t = hashmap_get(scope->transactions_by_key, key_any); - key_any = dns_resource_key_unref(key_any); - if (!t) - return NULL; - } + if (!t) + return NULL; /* Refuse reusing transactions that completed based on cached * data instead of a real packet, if that's requested. */ @@ -1068,49 +1061,46 @@ static int on_announcement_timeout(sd_event_source *s, usec_t usec, void *userda scope->announce_event_source = sd_event_source_unref(scope->announce_event_source); - dns_scope_announce(scope, false); + (void) dns_scope_announce(scope, false); return 0; } -void dns_scope_announce(DnsScope *scope, bool goodbye) { +int dns_scope_announce(DnsScope *scope, bool goodbye) { _cleanup_(dns_answer_unrefp) DnsAnswer *answer = NULL; _cleanup_(dns_packet_unrefp) DnsPacket *p = NULL; LinkAddress *a; int r; if (!scope) - return; + return 0; if (scope->protocol != DNS_PROTOCOL_MDNS) - return; + return 0; + + answer = dns_answer_new(scope->link->n_addresses * 2); + if (!answer) + return log_oom(); - answer = dns_answer_new(4); LIST_FOREACH(addresses, a, scope->link->addresses) { r = dns_answer_add(answer, a->mdns_address_rr, 0, goodbye ? DNS_ANSWER_GOODBYE : DNS_ANSWER_CACHE_FLUSH); - if (r < 0) { - log_debug_errno(r, "Failed to add address RR to answer: %m"); - return; - } + if (r < 0) + return log_debug_errno(r, "Failed to add address RR to answer: %m"); + r = dns_answer_add(answer, a->mdns_ptr_rr, 0, goodbye ? DNS_ANSWER_GOODBYE : DNS_ANSWER_CACHE_FLUSH); - if (r < 0) { - log_debug_errno(r, "Failed to add PTR RR to answer: %m"); - return; - } + if (r < 0) + return log_debug_errno(r, "Failed to add PTR RR to answer: %m"); } if (dns_answer_isempty(answer)) - return; + return 0; r = dns_scope_make_reply_packet(scope, 0, DNS_RCODE_SUCCESS, NULL, answer, NULL, false, &p); - if (r < 0) { - log_debug_errno(r, "Failed to build reply packet: %m"); - return; - } + if (r < 0) + return log_debug_errno(r, "Failed to build reply packet: %m"); + r = dns_scope_emit_udp(scope, -1, p); - if (r < 0) { - log_debug_errno(r, "Failed to send reply packet: %m"); - return; - } + if (r < 0) + return log_debug_errno(r, "Failed to send reply packet: %m"); /* In section 8.3 of RFC6762: "The Multicast DNS responder MUST send at least two unsolicited * responses, one second apart." */ @@ -1130,6 +1120,10 @@ void dns_scope_announce(DnsScope *scope, bool goodbye) { MDNS_JITTER_RANGE_USEC, on_announcement_timeout, scope); if (r < 0) - log_debug_errno(r, "Failed to schedule second announcement: %m"); + return log_debug_errno(r, "Failed to schedule second announcement: %m"); + + (void) sd_event_source_set_description(scope->announce_event_source, "mdns-announce"); } + + return 0; } |