X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;ds=sidebyside;f=avahi-core%2Fresolve-address.c;fp=avahi-core%2Fresolve-address.c;h=0000000000000000000000000000000000000000;hb=f1de9dcaab953757252d51b4725cbfa36daa10a5;hp=dd4adbc45501f52c2f50e5120c7f0172193643c4;hpb=7a5b2f69af7d36d6cd4153142f125fa011784e03;p=catta diff --git a/avahi-core/resolve-address.c b/avahi-core/resolve-address.c deleted file mode 100644 index dd4adbc..0000000 --- a/avahi-core/resolve-address.c +++ /dev/null @@ -1,268 +0,0 @@ -/*** - 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 - USA. -***/ - -#ifdef HAVE_CONFIG_H -#include -#endif - -#include - -#include -#include -#include -#include - -#include "browse.h" - -#define TIMEOUT_MSEC 5000 - -struct AvahiSAddressResolver { - AvahiServer *server; - AvahiAddress address; - - AvahiSRecordBrowser *record_browser; - - AvahiSAddressResolverCallback callback; - void* userdata; - - AvahiRecord *ptr_record; - AvahiIfIndex interface; - AvahiProtocol protocol; - AvahiLookupResultFlags flags; - - int retry_with_multicast; - AvahiKey *key; - - AvahiTimeEvent *time_event; - - AVAHI_LLIST_FIELDS(AvahiSAddressResolver, resolver); -}; - -static void finish(AvahiSAddressResolver *r, AvahiResolverEvent event) { - assert(r); - - if (r->time_event) { - avahi_time_event_free(r->time_event); - r->time_event = NULL; - } - - switch (event) { - case AVAHI_RESOLVER_FAILURE: - r->callback(r, r->interface, r->protocol, event, &r->address, NULL, r->flags, r->userdata); - break; - - case AVAHI_RESOLVER_FOUND: - assert(r->ptr_record); - r->callback(r, r->interface, r->protocol, event, &r->address, r->ptr_record->data.ptr.name, r->flags, r->userdata); - break; - } -} - -static void time_event_callback(AvahiTimeEvent *e, void *userdata) { - AvahiSAddressResolver *r = userdata; - - assert(e); - assert(r); - - avahi_server_set_errno(r->server, AVAHI_ERR_TIMEOUT); - finish(r, AVAHI_RESOLVER_FAILURE); -} - -static void start_timeout(AvahiSAddressResolver *r) { - struct timeval tv; - assert(r); - - if (r->time_event) - return; - - avahi_elapse_time(&tv, TIMEOUT_MSEC, 0); - r->time_event = avahi_time_event_new(r->server->time_event_queue, &tv, time_event_callback, r); -} - -static void record_browser_callback( - AvahiSRecordBrowser*rr, - AvahiIfIndex interface, - AvahiProtocol protocol, - AvahiBrowserEvent event, - AvahiRecord *record, - AvahiLookupResultFlags flags, - void* userdata) { - - AvahiSAddressResolver *r = userdata; - - assert(rr); - assert(r); - - switch (event) { - case AVAHI_BROWSER_NEW: - assert(record); - assert(record->key->type == AVAHI_DNS_TYPE_PTR); - - 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->ptr_record) { - r->ptr_record = avahi_record_ref(record); - r->flags = flags; - - finish(r, AVAHI_RESOLVER_FOUND); - } - break; - - case AVAHI_BROWSER_REMOVE: - assert(record); - assert(record->key->type == AVAHI_DNS_TYPE_PTR); - - if (r->ptr_record && avahi_record_equal_no_ttl(record, r->ptr_record)) { - avahi_record_unref(r->ptr_record); - r->ptr_record = NULL; - r->flags = flags; - - /** Look for a replacement */ - avahi_s_record_browser_restart(r->record_browser); - start_timeout(r); - } - - break; - - case AVAHI_BROWSER_CACHE_EXHAUSTED: - case AVAHI_BROWSER_ALL_FOR_NOW: - break; - - case AVAHI_BROWSER_FAILURE: - - if (r->retry_with_multicast) { - r->retry_with_multicast = 0; - - avahi_s_record_browser_free(r->record_browser); - r->record_browser = avahi_s_record_browser_new(r->server, r->interface, r->protocol, r->key, AVAHI_LOOKUP_USE_MULTICAST, record_browser_callback, r); - - if (r->record_browser) { - start_timeout(r); - break; - } - } - - r->flags = flags; - finish(r, AVAHI_RESOLVER_FAILURE); - break; - } -} - -AvahiSAddressResolver *avahi_s_address_resolver_new( - AvahiServer *server, - AvahiIfIndex interface, - AvahiProtocol protocol, - const AvahiAddress *address, - AvahiLookupFlags flags, - AvahiSAddressResolverCallback callback, - void* userdata) { - - AvahiSAddressResolver *r; - AvahiKey *k; - char n[AVAHI_DOMAIN_NAME_MAX]; - - assert(server); - assert(address); - assert(callback); - - 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, address->proto == AVAHI_PROTO_INET || address->proto == AVAHI_PROTO_INET6, 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); - - avahi_reverse_lookup_name(address, n, sizeof(n)); - - if (!(k = avahi_key_new(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_PTR))) { - avahi_server_set_errno(server, AVAHI_ERR_NO_MEMORY); - return NULL; - } - - if (!(r = avahi_new(AvahiSAddressResolver, 1))) { - avahi_server_set_errno(server, AVAHI_ERR_NO_MEMORY); - avahi_key_unref(k); - return NULL; - } - - r->server = server; - r->address = *address; - r->callback = callback; - r->userdata = userdata; - r->ptr_record = NULL; - r->interface = interface; - r->protocol = protocol; - r->flags = 0; - r->retry_with_multicast = 0; - r->key = k; - - r->record_browser = NULL; - AVAHI_LLIST_PREPEND(AvahiSAddressResolver, resolver, server->address_resolvers, r); - - r->time_event = NULL; - - if (!(flags & (AVAHI_LOOKUP_USE_MULTICAST|AVAHI_LOOKUP_USE_WIDE_AREA))) { - - if (!server->wide_area_lookup_engine || !avahi_wide_area_has_servers(server->wide_area_lookup_engine)) - flags |= AVAHI_LOOKUP_USE_MULTICAST; - else { - flags |= AVAHI_LOOKUP_USE_WIDE_AREA; - r->retry_with_multicast = 1; - } - } - - r->record_browser = avahi_s_record_browser_new(server, interface, protocol, k, flags, record_browser_callback, r); - - if (!r->record_browser) { - avahi_s_address_resolver_free(r); - return NULL; - } - - start_timeout(r); - - return r; -} - -void avahi_s_address_resolver_free(AvahiSAddressResolver *r) { - assert(r); - - AVAHI_LLIST_REMOVE(AvahiSAddressResolver, resolver, r->server->address_resolvers, r); - - if (r->record_browser) - avahi_s_record_browser_free(r->record_browser); - - if (r->time_event) - avahi_time_event_free(r->time_event); - - if (r->ptr_record) - avahi_record_unref(r->ptr_record); - - if (r->key) - avahi_key_unref(r->key); - - avahi_free(r); -}