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-rw-r--r--src/resolve/resolved-dns-query.c609
1 files changed, 51 insertions, 558 deletions
diff --git a/src/resolve/resolved-dns-query.c b/src/resolve/resolved-dns-query.c
index 2277002304..57f7467667 100644
--- a/src/resolve/resolved-dns-query.c
+++ b/src/resolve/resolved-dns-query.c
@@ -24,516 +24,36 @@
#include "resolved-dns-query.h"
#include "resolved-dns-domain.h"
-/* After how much time to repeat classic DNS requests */
-#define DNS_TRANSACTION_TIMEOUT_USEC (5 * USEC_PER_SEC)
-
-/* After how much time to repeat LLMNR requests, see RFC 4795 Section 7 */
-#define LLMNR_TRANSACTION_TIMEOUT_USEC (1 * USEC_PER_SEC)
-
/* How long to wait for the query in total */
#define QUERY_TIMEOUT_USEC (30 * USEC_PER_SEC)
-/* Maximum attempts to send DNS requests, across all DNS servers */
-#define DNS_TRANSACTION_ATTEMPTS_MAX 8
-
-/* Maximum attempts to send LLMNR requests, see RFC 4795 Section 2.7 */
-#define LLMNR_TRANSACTION_ATTEMPTS_MAX 3
-
#define CNAME_MAX 8
#define QUERIES_MAX 2048
-#define TRANSACTION_TIMEOUT_USEC(p) ((t)->scope->protocol == DNS_PROTOCOL_LLMNR ? LLMNR_TRANSACTION_TIMEOUT_USEC : DNS_TRANSACTION_TIMEOUT_USEC)
-#define TRANSACTION_ATTEMPTS_MAX(p) ((t)->scope->protocol == DNS_PROTOCOL_LLMNR ? LLMNR_TRANSACTION_ATTEMPTS_MAX : DNS_TRANSACTION_ATTEMPTS_MAX)
-
-static int dns_query_transaction_go(DnsQueryTransaction *t);
-
-DnsQueryTransaction* dns_query_transaction_free(DnsQueryTransaction *t) {
- DnsQuery *q;
-
- if (!t)
- return NULL;
-
- sd_event_source_unref(t->timeout_event_source);
-
- dns_question_unref(t->question);
- dns_packet_unref(t->sent);
- dns_packet_unref(t->received);
- dns_answer_unref(t->cached);
-
- dns_stream_free(t->stream);
-
- if (t->scope) {
- LIST_REMOVE(transactions_by_scope, t->scope->transactions, t);
-
- if (t->id != 0)
- hashmap_remove(t->scope->manager->dns_query_transactions, UINT_TO_PTR(t->id));
- }
-
- while ((q = set_steal_first(t->queries)))
- set_remove(q->transactions, t);
-
- set_free(t->queries);
-
- free(t);
- return NULL;
-}
-
-DEFINE_TRIVIAL_CLEANUP_FUNC(DnsQueryTransaction*, dns_query_transaction_free);
-
-static void dns_query_transaction_gc(DnsQueryTransaction *t) {
- assert(t);
-
- if (t->block_gc > 0)
- return;
-
- if (set_isempty(t->queries))
- dns_query_transaction_free(t);
-}
-
-static int dns_query_transaction_new(DnsQueryTransaction **ret, DnsScope *s, DnsQuestion *q) {
- _cleanup_(dns_query_transaction_freep) DnsQueryTransaction *t = NULL;
- int r;
+static void dns_query_stop(DnsQuery *q) {
+ DnsTransaction *t;
- assert(ret);
- assert(s);
assert(q);
- r = hashmap_ensure_allocated(&s->manager->dns_query_transactions, NULL, NULL);
- if (r < 0)
- return r;
-
- t = new0(DnsQueryTransaction, 1);
- if (!t)
- return -ENOMEM;
-
- t->question = dns_question_ref(q);
-
- do
- random_bytes(&t->id, sizeof(t->id));
- while (t->id == 0 ||
- hashmap_get(s->manager->dns_query_transactions, UINT_TO_PTR(t->id)));
-
- r = hashmap_put(s->manager->dns_query_transactions, UINT_TO_PTR(t->id), t);
- if (r < 0) {
- t->id = 0;
- return r;
- }
-
- LIST_PREPEND(transactions_by_scope, s->transactions, t);
- t->scope = s;
-
- if (ret)
- *ret = t;
-
- t = NULL;
-
- return 0;
-}
-
-static void dns_query_transaction_stop(DnsQueryTransaction *t) {
- assert(t);
-
- t->timeout_event_source = sd_event_source_unref(t->timeout_event_source);
- t->stream = dns_stream_free(t->stream);
-}
-
-void dns_query_transaction_complete(DnsQueryTransaction *t, DnsQueryState state) {
- DnsQuery *q;
- Iterator i;
-
- assert(t);
- assert(!IN_SET(state, DNS_QUERY_NULL, DNS_QUERY_PENDING));
- assert(IN_SET(t->state, DNS_QUERY_NULL, DNS_QUERY_PENDING));
-
- /* Note that this call might invalidate the query. Callers
- * should hence not attempt to access the query or transaction
- * after calling this function. */
-
- log_debug("Transaction on scope %s on %s/%s now complete with %s",
- dns_protocol_to_string(t->scope->protocol),
- t->scope->link ? t->scope->link->name : "*",
- t->scope->family == AF_UNSPEC ? "*" : af_to_name(t->scope->family),
- dns_query_state_to_string(state));
-
- t->state = state;
-
- dns_query_transaction_stop(t);
-
- /* Notify all queries that are interested, but make sure the
- * transaction isn't freed while we are still looking at it */
- t->block_gc++;
- SET_FOREACH(q, t->queries, i)
- dns_query_ready(q);
- t->block_gc--;
-
- dns_query_transaction_gc(t);
-}
-
-static int on_stream_complete(DnsStream *s, int error) {
- _cleanup_(dns_packet_unrefp) DnsPacket *p = NULL;
- DnsQueryTransaction *t;
-
- assert(s);
- assert(s->transaction);
-
- /* Copy the data we care about out of the stream before we
- * destroy it. */
- t = s->transaction;
- p = dns_packet_ref(s->read_packet);
-
- t->stream = dns_stream_free(t->stream);
-
- if (error != 0) {
- dns_query_transaction_complete(t, DNS_QUERY_RESOURCES);
- return 0;
- }
-
- t->block_gc++;
- dns_query_transaction_process_reply(t, p);
- t->block_gc--;
-
- /* If the response wasn't useful, then complete the transition now */
- if (t->state == DNS_QUERY_PENDING)
- dns_query_transaction_complete(t, DNS_QUERY_INVALID_REPLY);
-
- return 0;
-}
-
-static int dns_query_transaction_open_tcp(DnsQueryTransaction *t) {
- _cleanup_close_ int fd = -1;
- int r;
-
- assert(t);
-
- if (t->stream)
- return 0;
-
- if (t->scope->protocol == DNS_PROTOCOL_DNS)
- fd = dns_scope_tcp_socket(t->scope, AF_UNSPEC, NULL, 53);
- else if (t->scope->protocol == DNS_PROTOCOL_LLMNR) {
-
- /* When we already received a query to this (but it was truncated), send to its sender address */
- if (t->received)
- fd = dns_scope_tcp_socket(t->scope, t->received->family, &t->received->sender, t->received->sender_port);
- else {
- union in_addr_union address;
- int family;
-
- /* Otherwise, try to talk to the owner of a
- * the IP address, in case this is a reverse
- * PTR lookup */
- r = dns_question_extract_reverse_address(t->question, &family, &address);
- if (r < 0)
- return r;
- if (r == 0)
- return -EINVAL;
-
- fd = dns_scope_tcp_socket(t->scope, family, &address, 5355);
- }
- } else
- return -EAFNOSUPPORT;
-
- if (fd < 0)
- return fd;
-
- r = dns_stream_new(t->scope->manager, &t->stream, t->scope->protocol, fd);
- if (r < 0)
- return r;
-
- fd = -1;
-
- r = dns_stream_write_packet(t->stream, t->sent);
- if (r < 0) {
- t->stream = dns_stream_free(t->stream);
- return r;
- }
-
- t->received = dns_packet_unref(t->received);
- t->stream->complete = on_stream_complete;
- t->stream->transaction = t;
-
- /* The interface index is difficult to determine if we are
- * connecting to the local host, hence fill this in right away
- * instead of determining it from the socket */
- if (t->scope->link)
- t->stream->ifindex = t->scope->link->ifindex;
-
- return 0;
-}
-
-void dns_query_transaction_process_reply(DnsQueryTransaction *t, DnsPacket *p) {
- int r;
-
- assert(t);
- assert(p);
- assert(t->state == DNS_QUERY_PENDING);
-
- /* Note that this call might invalidate the query. Callers
- * should hence not attempt to access the query or transaction
- * after calling this function. */
-
- if (t->scope->protocol == DNS_PROTOCOL_LLMNR) {
- assert(t->scope->link);
-
- /* For LLMNR we will not accept any packets from other
- * interfaces */
-
- if (p->ifindex != t->scope->link->ifindex)
- return;
-
- if (p->family != t->scope->family)
- return;
-
- /* Tentative replies shall be discarded, see RFC 4795,
- * 2.1.1 */
-
- if (DNS_PACKET_T(p))
- return;
- }
-
- if (t->scope->protocol == DNS_PROTOCOL_DNS) {
-
- /* For DNS we are fine with accepting packets on any
- * interface, but the source IP address must be one of
- * a valid DNS server */
-
- if (!dns_scope_good_dns_server(t->scope, p->family, &p->sender))
- return;
-
- if (p->sender_port != 53)
- return;
- }
-
- if (t->received != p) {
- dns_packet_unref(t->received);
- t->received = dns_packet_ref(p);
- }
-
- if (p->ipproto == IPPROTO_TCP) {
- if (DNS_PACKET_TC(p)) {
- /* Truncated via TCP? Somebody must be fucking with us */
- dns_query_transaction_complete(t, DNS_QUERY_INVALID_REPLY);
- return;
- }
-
- if (DNS_PACKET_ID(p) != t->id) {
- /* Not the reply to our query? Somebody must be fucking with us */
- dns_query_transaction_complete(t, DNS_QUERY_INVALID_REPLY);
- return;
- }
- }
-
- if (DNS_PACKET_TC(p)) {
- /* Response was truncated, let's try again with good old TCP */
- r = dns_query_transaction_open_tcp(t);
- if (r == -ESRCH) {
- /* No servers found? Damn! */
- dns_query_transaction_complete(t, DNS_QUERY_NO_SERVERS);
- return;
- }
- if (r < 0) {
- /* On LLMNR, if we cannot connect to the host,
- * we immediately give up */
- if (t->scope->protocol == DNS_PROTOCOL_LLMNR) {
- dns_query_transaction_complete(t, DNS_QUERY_RESOURCES);
- return;
- }
-
- /* On DNS, couldn't send? Try immediately again, with a new server */
- dns_scope_next_dns_server(t->scope);
-
- r = dns_query_transaction_go(t);
- if (r < 0) {
- dns_query_transaction_complete(t, DNS_QUERY_RESOURCES);
- return;
- }
-
- return;
- }
- }
-
- /* Parse and update the cache */
- r = dns_packet_extract(p);
- if (r < 0) {
- dns_query_transaction_complete(t, DNS_QUERY_INVALID_REPLY);
- return;
- }
-
- /* According to RFC 4795, section 2.9. only the RRs from the answer section shall be cached */
- dns_cache_put(&t->scope->cache, p->question, DNS_PACKET_RCODE(p), p->answer, DNS_PACKET_ANCOUNT(p), 0);
-
- if (DNS_PACKET_RCODE(p) == DNS_RCODE_SUCCESS)
- dns_query_transaction_complete(t, DNS_QUERY_SUCCESS);
- else
- dns_query_transaction_complete(t, DNS_QUERY_FAILURE);
-}
-
-static int on_transaction_timeout(sd_event_source *s, usec_t usec, void *userdata) {
- DnsQueryTransaction *t = userdata;
- int r;
-
- assert(s);
- assert(t);
-
- /* Timeout reached? Try again, with a new server */
- dns_scope_next_dns_server(t->scope);
-
- r = dns_query_transaction_go(t);
- if (r < 0)
- dns_query_transaction_complete(t, DNS_QUERY_RESOURCES);
-
- return 0;
-}
-
-static int dns_query_make_packet(DnsQueryTransaction *t) {
- _cleanup_(dns_packet_unrefp) DnsPacket *p = NULL;
- unsigned n, added = 0;
- int r;
-
- assert(t);
-
- if (t->sent)
- return 0;
-
- r = dns_packet_new_query(&p, t->scope->protocol, 0);
- if (r < 0)
- return r;
-
- for (n = 0; n < t->question->n_keys; n++) {
- r = dns_scope_good_key(t->scope, t->question->keys[n]);
- if (r < 0)
- return r;
- if (r == 0)
- continue;
-
- r = dns_packet_append_key(p, t->question->keys[n], NULL);
- if (r < 0)
- return r;
-
- added++;
- }
-
- if (added <= 0)
- return -EDOM;
-
- DNS_PACKET_HEADER(p)->qdcount = htobe16(added);
- DNS_PACKET_HEADER(p)->id = t->id;
-
- t->sent = p;
- p = NULL;
-
- return 0;
-}
-
-static int dns_query_transaction_go(DnsQueryTransaction *t) {
- bool had_stream;
- int r;
-
- assert(t);
-
- had_stream = !!t->stream;
-
- dns_query_transaction_stop(t);
-
- log_debug("Beginning transaction on scope %s on %s/%s",
- dns_protocol_to_string(t->scope->protocol),
- t->scope->link ? t->scope->link->name : "*",
- t->scope->family == AF_UNSPEC ? "*" : af_to_name(t->scope->family));
-
- if (t->n_attempts >= TRANSACTION_ATTEMPTS_MAX(t)) {
- dns_query_transaction_complete(t, DNS_QUERY_ATTEMPTS_MAX);
- return 0;
- }
-
- if (t->scope->protocol == DNS_PROTOCOL_LLMNR && had_stream) {
- /* If we already tried via a stream, then we don't
- * retry on LLMNR. See RFC 4795, Section 2.7. */
- dns_query_transaction_complete(t, DNS_QUERY_ATTEMPTS_MAX);
- return 0;
- }
-
- t->n_attempts++;
- t->received = dns_packet_unref(t->received);
- t->cached = dns_answer_unref(t->cached);
- t->cached_rcode = 0;
-
- /* First, let's try the cache */
- dns_cache_prune(&t->scope->cache);
- r = dns_cache_lookup(&t->scope->cache, t->question, &t->cached_rcode, &t->cached);
- if (r < 0)
- return r;
- if (r > 0) {
- if (t->cached_rcode == DNS_RCODE_SUCCESS)
- dns_query_transaction_complete(t, DNS_QUERY_SUCCESS);
- else
- dns_query_transaction_complete(t, DNS_QUERY_FAILURE);
- return 0;
- }
-
- /* Otherwise, we need to ask the network */
- r = dns_query_make_packet(t);
- if (r == -EDOM) {
- /* Not the right request to make on this network?
- * (i.e. an A request made on IPv6 or an AAAA request
- * made on IPv4, on LLMNR or mDNS.) */
- dns_query_transaction_complete(t, DNS_QUERY_NO_SERVERS);
- return 0;
- }
- if (r < 0)
- return r;
-
- if (t->scope->protocol == DNS_PROTOCOL_LLMNR &&
- (dns_question_endswith(t->question, "in-addr.arpa") > 0 ||
- dns_question_endswith(t->question, "ip6.arpa") > 0)) {
-
- /* RFC 4795, Section 2.4. says reverse lookups shall
- * always be made via TCP on LLMNR */
- r = dns_query_transaction_open_tcp(t);
- } else {
- /* Try via UDP, and if that fails due to large size try via TCP */
- r = dns_scope_send(t->scope, t->sent);
- if (r == -EMSGSIZE)
- r = dns_query_transaction_open_tcp(t);
- }
- if (r == -ESRCH) {
- /* No servers to send this to? */
- dns_query_transaction_complete(t, DNS_QUERY_NO_SERVERS);
- return 0;
- }
- if (r < 0) {
- /* Couldn't send? Try immediately again, with a new server */
- dns_scope_next_dns_server(t->scope);
+ q->timeout_event_source = sd_event_source_unref(q->timeout_event_source);
- return dns_query_transaction_go(t);
+ while ((t = set_steal_first(q->transactions))) {
+ set_remove(t->queries, q);
+ dns_transaction_gc(t);
}
-
- r = sd_event_add_time(t->scope->manager->event, &t->timeout_event_source, CLOCK_MONOTONIC, now(CLOCK_MONOTONIC) + TRANSACTION_TIMEOUT_USEC(t), 0, on_transaction_timeout, t);
- if (r < 0)
- return r;
-
- t->state = DNS_QUERY_PENDING;
- return 1;
}
DnsQuery *dns_query_free(DnsQuery *q) {
- DnsQueryTransaction *t;
-
if (!q)
return NULL;
- sd_bus_message_unref(q->request);
+ dns_query_stop(q);
+ set_free(q->transactions);
dns_question_unref(q->question);
dns_answer_unref(q->answer);
- sd_event_source_unref(q->timeout_event_source);
-
- while ((t = set_steal_first(q->transactions))) {
- set_remove(t->queries, q);
- dns_query_transaction_gc(t);
- }
-
- set_free(q->transactions);
+ sd_bus_message_unref(q->request);
if (q->manager) {
LIST_REMOVE(queries, q->manager->dns_queries, q);
@@ -587,23 +107,10 @@ int dns_query_new(Manager *m, DnsQuery **ret, DnsQuestion *question) {
return 0;
}
-static void dns_query_stop(DnsQuery *q) {
- DnsQueryTransaction *t;
-
- assert(q);
-
- q->timeout_event_source = sd_event_source_unref(q->timeout_event_source);
-
- while ((t = set_steal_first(q->transactions))) {
- set_remove(t->queries, q);
- dns_query_transaction_gc(t);
- }
-}
-
-static void dns_query_complete(DnsQuery *q, DnsQueryState state) {
+static void dns_query_complete(DnsQuery *q, DnsTransactionState state) {
assert(q);
- assert(!IN_SET(state, DNS_QUERY_NULL, DNS_QUERY_PENDING));
- assert(IN_SET(q->state, DNS_QUERY_NULL, DNS_QUERY_PENDING));
+ assert(!IN_SET(state, DNS_TRANSACTION_NULL, DNS_TRANSACTION_PENDING));
+ assert(IN_SET(q->state, DNS_TRANSACTION_NULL, DNS_TRANSACTION_PENDING));
/* Note that this call might invalidate the query. Callers
* should hence not attempt to access the query or transaction
@@ -622,16 +129,17 @@ static int on_query_timeout(sd_event_source *s, usec_t usec, void *userdata) {
assert(s);
assert(q);
- dns_query_complete(q, DNS_QUERY_TIMEOUT);
+ dns_query_complete(q, DNS_TRANSACTION_TIMEOUT);
return 0;
}
static int dns_query_add_transaction(DnsQuery *q, DnsScope *s, DnsResourceKey *key) {
_cleanup_(dns_question_unrefp) DnsQuestion *question = NULL;
- DnsQueryTransaction *t;
+ DnsTransaction *t;
int r;
assert(q);
+ assert(s);
r = set_ensure_allocated(&q->transactions, NULL, NULL);
if (r < 0)
@@ -648,34 +156,31 @@ static int dns_query_add_transaction(DnsQuery *q, DnsScope *s, DnsResourceKey *k
} else
question = dns_question_ref(q->question);
- LIST_FOREACH(transactions_by_scope, t, s->transactions)
- if (dns_question_is_superset(t->question, question))
- break;
-
+ t = dns_scope_find_transaction(s, question);
if (!t) {
- r = dns_query_transaction_new(&t, s, question);
+ r = dns_transaction_new(&t, s, question);
if (r < 0)
return r;
}
r = set_ensure_allocated(&t->queries, NULL, NULL);
if (r < 0)
- goto fail;
+ goto gc;
r = set_put(t->queries, q);
if (r < 0)
- goto fail;
+ goto gc;
r = set_put(q->transactions, t);
if (r < 0) {
set_remove(t->queries, q);
- goto fail;
+ goto gc;
}
return 0;
-fail:
- dns_query_transaction_gc(t);
+gc:
+ dns_transaction_gc(t);
return r;
}
@@ -709,14 +214,14 @@ static int dns_query_add_transaction_split(DnsQuery *q, DnsScope *s) {
int dns_query_go(DnsQuery *q) {
DnsScopeMatch found = DNS_SCOPE_NO;
DnsScope *s, *first = NULL;
- DnsQueryTransaction *t;
+ DnsTransaction *t;
const char *name;
Iterator i;
int r;
assert(q);
- if (q->state != DNS_QUERY_NULL)
+ if (q->state != DNS_TRANSACTION_NULL)
return 0;
assert(q->question);
@@ -752,21 +257,21 @@ int dns_query_go(DnsQuery *q) {
r = dns_query_add_transaction_split(q, first);
if (r < 0)
- return r;
+ goto fail;
LIST_FOREACH(scopes, s, first->scopes_next) {
DnsScopeMatch match;
match = dns_scope_good_domain(s, name);
if (match < 0)
- return match;
+ goto fail;
if (match != found)
continue;
r = dns_query_add_transaction_split(q, s);
if (r < 0)
- return r;
+ goto fail;
}
q->answer = dns_answer_unref(q->answer);
@@ -777,15 +282,17 @@ int dns_query_go(DnsQuery *q) {
if (r < 0)
goto fail;
- q->state = DNS_QUERY_PENDING;
+ q->state = DNS_TRANSACTION_PENDING;
q->block_ready++;
+ /* Start the transactions that are not started yet */
SET_FOREACH(t, q->transactions, i) {
- if (t->state == DNS_QUERY_NULL) {
- r = dns_query_transaction_go(t);
- if (r < 0)
- goto fail;
- }
+ if (t->state != DNS_TRANSACTION_NULL)
+ continue;
+
+ r = dns_transaction_go(t);
+ if (r < 0)
+ goto fail;
}
q->block_ready--;
@@ -799,8 +306,8 @@ fail:
}
void dns_query_ready(DnsQuery *q) {
- DnsQueryTransaction *t;
- DnsQueryState state = DNS_QUERY_NO_SERVERS;
+ DnsTransaction *t;
+ DnsTransactionState state = DNS_TRANSACTION_NO_SERVERS;
_cleanup_(dns_answer_unrefp) DnsAnswer *answer = NULL;
int rcode = 0;
DnsScope *scope = NULL;
@@ -808,7 +315,7 @@ void dns_query_ready(DnsQuery *q) {
Iterator i;
assert(q);
- assert(IN_SET(q->state, DNS_QUERY_NULL, DNS_QUERY_PENDING));
+ assert(IN_SET(q->state, DNS_TRANSACTION_NULL, DNS_TRANSACTION_PENDING));
/* Note that this call might invalidate the query. Callers
* should hence not attempt to access the query or transaction
@@ -821,18 +328,18 @@ void dns_query_ready(DnsQuery *q) {
SET_FOREACH(t, q->transactions, i) {
/* If we found a successful answer, ignore all answers from other scopes */
- if (state == DNS_QUERY_SUCCESS && t->scope != scope)
+ if (state == DNS_TRANSACTION_SUCCESS && t->scope != scope)
continue;
/* One of the transactions is still going on, let's maybe wait for it */
- if (IN_SET(t->state, DNS_QUERY_PENDING, DNS_QUERY_NULL)) {
+ if (IN_SET(t->state, DNS_TRANSACTION_PENDING, DNS_TRANSACTION_NULL)) {
pending = true;
continue;
}
/* One of the transactions is successful, let's use
* it, and copy its data out */
- if (t->state == DNS_QUERY_SUCCESS) {
+ if (t->state == DNS_TRANSACTION_SUCCESS) {
DnsAnswer *a;
if (t->received) {
@@ -843,12 +350,12 @@ void dns_query_ready(DnsQuery *q) {
a = t->cached;
}
- if (state == DNS_QUERY_SUCCESS) {
+ if (state == DNS_TRANSACTION_SUCCESS) {
DnsAnswer *merged;
merged = dns_answer_merge(answer, a);
if (!merged) {
- dns_query_complete(q, DNS_QUERY_RESOURCES);
+ dns_query_complete(q, DNS_TRANSACTION_RESOURCES);
return;
}
@@ -860,14 +367,14 @@ void dns_query_ready(DnsQuery *q) {
}
scope = t->scope;
- state = DNS_QUERY_SUCCESS;
+ state = DNS_TRANSACTION_SUCCESS;
continue;
}
/* One of the transactions has failed, let's see
* whether we find anything better, but if not, return
* its response data */
- if (state != DNS_QUERY_SUCCESS && t->state == DNS_QUERY_FAILURE) {
+ if (state != DNS_TRANSACTION_SUCCESS && t->state == DNS_TRANSACTION_FAILURE) {
DnsAnswer *a;
if (t->received) {
@@ -882,11 +389,11 @@ void dns_query_ready(DnsQuery *q) {
answer = dns_answer_ref(a);
scope = t->scope;
- state = DNS_QUERY_FAILURE;
+ state = DNS_TRANSACTION_FAILURE;
continue;
}
- if (state == DNS_QUERY_NO_SERVERS && t->state != DNS_QUERY_NO_SERVERS)
+ if (state == DNS_TRANSACTION_NO_SERVERS && t->state != DNS_TRANSACTION_NO_SERVERS)
state = t->state;
}
@@ -894,18 +401,18 @@ void dns_query_ready(DnsQuery *q) {
/* If so far we weren't successful, and there's
* something still pending, then wait for it */
- if (state != DNS_QUERY_SUCCESS)
+ if (state != DNS_TRANSACTION_SUCCESS)
return;
/* If we already were successful, then only wait for
* other transactions on the same scope to finish. */
SET_FOREACH(t, q->transactions, i) {
- if (t->scope == scope && IN_SET(t->state, DNS_QUERY_PENDING, DNS_QUERY_NULL))
+ if (t->scope == scope && IN_SET(t->state, DNS_TRANSACTION_PENDING, DNS_TRANSACTION_NULL))
return;
}
}
- if (IN_SET(state, DNS_QUERY_SUCCESS, DNS_QUERY_FAILURE)) {
+ if (IN_SET(state, DNS_TRANSACTION_SUCCESS, DNS_TRANSACTION_FAILURE)) {
q->answer = dns_answer_ref(answer);
q->answer_rcode = rcode;
q->answer_ifindex = (scope && scope->link) ? scope->link->ifindex : 0;
@@ -934,21 +441,7 @@ int dns_query_cname_redirect(DnsQuery *q, const char *name) {
q->n_cname_redirects++;
dns_query_stop(q);
- q->state = DNS_QUERY_NULL;
+ q->state = DNS_TRANSACTION_NULL;
return 0;
}
-
-static const char* const dns_query_state_table[_DNS_QUERY_STATE_MAX] = {
- [DNS_QUERY_NULL] = "null",
- [DNS_QUERY_PENDING] = "pending",
- [DNS_QUERY_FAILURE] = "failure",
- [DNS_QUERY_SUCCESS] = "success",
- [DNS_QUERY_NO_SERVERS] = "no-servers",
- [DNS_QUERY_TIMEOUT] = "timeout",
- [DNS_QUERY_ATTEMPTS_MAX] = "attempts-max",
- [DNS_QUERY_INVALID_REPLY] = "invalid-reply",
- [DNS_QUERY_RESOURCES] = "resources",
- [DNS_QUERY_ABORTED] = "aborted",
-};
-DEFINE_STRING_TABLE_LOOKUP(dns_query_state, DnsQueryState);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-07-04 05:59:40 +0000