-/* $Id$ */
-
/***
This file is part of avahi.
-
+
avahi is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
-
+
avahi is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
Public License for more details.
-
+
You should have received a copy of the GNU Lesser General Public
License along with avahi; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
struct AvahiSHostNameResolver {
AvahiServer *server;
char *host_name;
-
+
AvahiSRecordBrowser *record_browser_a;
AvahiSRecordBrowser *record_browser_aaaa;
switch (event) {
case AVAHI_RESOLVER_FOUND: {
AvahiAddress a;
-
+
assert(r->address_record);
-
+
switch (r->address_record->key->type) {
case AVAHI_DNS_TYPE_A:
a.proto = AVAHI_PROTO_INET;
a.data.ipv4 = r->address_record->data.a.address;
break;
-
+
case AVAHI_DNS_TYPE_AAAA:
a.proto = AVAHI_PROTO_INET6;
a.data.ipv6 = r->address_record->data.aaaa.address;
break;
-
+
default:
abort();
}
break;
}
-
+
case AVAHI_RESOLVER_FAILURE:
-
+
r->callback(r, r->interface, r->protocol, event, r->host_name, NULL, r->flags, r->userdata);
break;
}
static void time_event_callback(AvahiTimeEvent *e, void *userdata) {
AvahiSHostNameResolver *r = userdata;
-
+
assert(e);
assert(r);
AvahiRecord *record,
AvahiLookupResultFlags flags,
void* userdata) {
-
+
AvahiSHostNameResolver *r = userdata;
-
+
assert(rr);
assert(r);
if (r->interface > 0 && interface != r->interface)
return;
-
+
if (r->protocol != AVAHI_PROTO_UNSPEC && protocol != r->protocol)
return;
-
+
if (r->interface <= 0)
r->interface = interface;
-
+
if (r->protocol == AVAHI_PROTO_UNSPEC)
r->protocol = protocol;
-
+
if (!r->address_record) {
r->address_record = avahi_record_ref(record);
r->flags = flags;
-
+
finish(r, AVAHI_RESOLVER_FOUND);
}
r->flags = flags;
-
+
/** Look for a replacement */
if (r->record_browser_aaaa)
avahi_s_record_browser_restart(r->record_browser_aaaa);
if (r->record_browser_a)
avahi_s_record_browser_restart(r->record_browser_a);
-
+
start_timeout(r);
}
case AVAHI_BROWSER_FAILURE:
/* Stop browsers */
-
+
if (r->record_browser_aaaa)
avahi_s_record_browser_free(r->record_browser_aaaa);
if (r->record_browser_a)
r->record_browser_a = r->record_browser_aaaa = NULL;
r->flags = flags;
-
+
finish(r, AVAHI_RESOLVER_FAILURE);
break;
}
AvahiLookupFlags flags,
AvahiSHostNameResolverCallback callback,
void* userdata) {
-
+
AvahiSHostNameResolver *r;
AvahiKey *k;
-
+
assert(server);
assert(host_name);
assert(callback);
- assert(aprotocol == AVAHI_PROTO_UNSPEC || aprotocol == AVAHI_PROTO_INET || aprotocol == AVAHI_PROTO_INET6);
-
- if (!AVAHI_IF_VALID(interface)) {
- avahi_server_set_errno(server, AVAHI_ERR_INVALID_INTERFACE);
- return NULL;
- }
-
- if (!avahi_is_valid_domain_name(host_name)) {
- avahi_server_set_errno(server, AVAHI_ERR_INVALID_HOST_NAME);
- return NULL;
- }
-
- if (!AVAHI_FLAGS_VALID(flags, AVAHI_LOOKUP_USE_WIDE_AREA|AVAHI_LOOKUP_USE_MULTICAST)) {
- avahi_server_set_errno(server, AVAHI_ERR_INVALID_FLAGS);
- return NULL;
- }
+ AVAHI_CHECK_VALIDITY_RETURN_NULL(server, AVAHI_IF_VALID(interface), AVAHI_ERR_INVALID_INTERFACE);
+ AVAHI_CHECK_VALIDITY_RETURN_NULL(server, AVAHI_PROTO_VALID(protocol), AVAHI_ERR_INVALID_PROTOCOL);
+ AVAHI_CHECK_VALIDITY_RETURN_NULL(server, avahi_is_valid_fqdn(host_name), AVAHI_ERR_INVALID_HOST_NAME);
+ AVAHI_CHECK_VALIDITY_RETURN_NULL(server, AVAHI_PROTO_VALID(aprotocol), AVAHI_ERR_INVALID_PROTOCOL);
+ AVAHI_CHECK_VALIDITY_RETURN_NULL(server, AVAHI_FLAGS_VALID(flags, AVAHI_LOOKUP_USE_WIDE_AREA|AVAHI_LOOKUP_USE_MULTICAST), AVAHI_ERR_INVALID_FLAGS);
if (!(r = avahi_new(AvahiSHostNameResolver, 1))) {
avahi_server_set_errno(server, AVAHI_ERR_NO_MEMORY);
return NULL;
}
-
+
r->server = server;
r->host_name = avahi_normalize_name_strdup(host_name);
r->callback = callback;
r->record_browser_aaaa = r->record_browser_a = NULL;
-
if (aprotocol == AVAHI_PROTO_INET || aprotocol == AVAHI_PROTO_UNSPEC) {
k = avahi_key_new(host_name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_A);
r->record_browser_a = avahi_s_record_browser_new(server, interface, protocol, k, flags, record_browser_callback, r);
if (!r->record_browser_a)
goto fail;
- }
+ }
if (aprotocol == AVAHI_PROTO_INET6 || aprotocol == AVAHI_PROTO_UNSPEC) {
k = avahi_key_new(host_name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_AAAA);
assert(r->record_browser_aaaa || r->record_browser_a);
start_timeout(r);
-
+
return r;
fail:
if (r->address_record)
avahi_record_unref(r->address_record);
-
+
avahi_free(r->host_name);
avahi_free(r);
}