+++ /dev/null
-/***
- 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 <config.h>
-#endif
-
-#include <stdlib.h>
-
-#include <avahi-common/domain.h>
-#include <avahi-common/malloc.h>
-#include <avahi-common/error.h>
-
-#include "browse.h"
-#include "log.h"
-
-struct AvahiSDomainBrowser {
- int ref;
-
- AvahiServer *server;
-
- AvahiSRecordBrowser *record_browser;
-
- AvahiDomainBrowserType type;
- AvahiSDomainBrowserCallback callback;
- void* userdata;
-
- AvahiTimeEvent *defer_event;
-
- int all_for_now_scheduled;
-
- AVAHI_LLIST_FIELDS(AvahiSDomainBrowser, browser);
-};
-
-static void inc_ref(AvahiSDomainBrowser *b) {
- assert(b);
- assert(b->ref >= 1);
-
- b->ref++;
-}
-
-static void record_browser_callback(
- AvahiSRecordBrowser*rr,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiBrowserEvent event,
- AvahiRecord *record,
- AvahiLookupResultFlags flags,
- void* userdata) {
-
- AvahiSDomainBrowser *b = userdata;
- char *n = NULL;
-
- assert(rr);
- assert(b);
-
- if (event == AVAHI_BROWSER_ALL_FOR_NOW &&
- b->defer_event) {
-
- b->all_for_now_scheduled = 1;
- return;
- }
-
- /* Filter flags */
- flags &= AVAHI_LOOKUP_RESULT_CACHED | AVAHI_LOOKUP_RESULT_MULTICAST | AVAHI_LOOKUP_RESULT_WIDE_AREA;
-
- if (record) {
- assert(record->key->type == AVAHI_DNS_TYPE_PTR);
- n = record->data.ptr.name;
-
- if (b->type == AVAHI_DOMAIN_BROWSER_BROWSE) {
- AvahiStringList *l;
-
- /* Filter out entries defined statically */
-
- for (l = b->server->config.browse_domains; l; l = l->next)
- if (avahi_domain_equal((char*) l->text, n))
- return;
- }
-
- }
-
- b->callback(b, interface, protocol, event, n, flags, b->userdata);
-}
-
-static void defer_callback(AvahiTimeEvent *e, void *userdata) {
- AvahiSDomainBrowser *b = userdata;
- AvahiStringList *l;
-
- assert(e);
- assert(b);
-
- assert(b->type == AVAHI_DOMAIN_BROWSER_BROWSE);
-
- avahi_time_event_free(b->defer_event);
- b->defer_event = NULL;
-
- /* Increase ref counter */
- inc_ref(b);
-
- for (l = b->server->config.browse_domains; l; l = l->next) {
-
- /* Check whether this object still exists outside our own
- * stack frame */
- if (b->ref <= 1)
- break;
-
- b->callback(b, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, AVAHI_BROWSER_NEW, (char*) l->text, AVAHI_LOOKUP_RESULT_STATIC, b->userdata);
- }
-
- if (b->ref > 1) {
- /* If the ALL_FOR_NOW event has already been scheduled, execute it now */
-
- if (b->all_for_now_scheduled)
- b->callback(b, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, AVAHI_BROWSER_ALL_FOR_NOW, NULL, 0, b->userdata);
- }
-
- /* Decrease ref counter */
- avahi_s_domain_browser_free(b);
-}
-
-AvahiSDomainBrowser *avahi_s_domain_browser_new(
- AvahiServer *server,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- const char *domain,
- AvahiDomainBrowserType type,
- AvahiLookupFlags flags,
- AvahiSDomainBrowserCallback callback,
- void* userdata) {
-
- static const char * const type_table[AVAHI_DOMAIN_BROWSER_MAX] = {
- "b",
- "db",
- "r",
- "dr",
- "lb"
- };
-
- AvahiSDomainBrowser *b;
- AvahiKey *k = NULL;
- char n[AVAHI_DOMAIN_NAME_MAX];
- int r;
-
- assert(server);
- 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, type < AVAHI_DOMAIN_BROWSER_MAX, AVAHI_ERR_INVALID_FLAGS);
- AVAHI_CHECK_VALIDITY_RETURN_NULL(server, !domain || avahi_is_valid_domain_name(domain), AVAHI_ERR_INVALID_DOMAIN_NAME);
- AVAHI_CHECK_VALIDITY_RETURN_NULL(server, AVAHI_FLAGS_VALID(flags, AVAHI_LOOKUP_USE_WIDE_AREA|AVAHI_LOOKUP_USE_MULTICAST), AVAHI_ERR_INVALID_FLAGS);
-
- if (!domain)
- domain = server->domain_name;
-
- if ((r = avahi_service_name_join(n, sizeof(n), type_table[type], "_dns-sd._udp", domain)) < 0) {
- avahi_server_set_errno(server, r);
- return NULL;
- }
-
- if (!(b = avahi_new(AvahiSDomainBrowser, 1))) {
- avahi_server_set_errno(server, AVAHI_ERR_NO_MEMORY);
- return NULL;
- }
-
- b->ref = 1;
- b->server = server;
- b->callback = callback;
- b->userdata = userdata;
- b->record_browser = NULL;
- b->type = type;
- b->all_for_now_scheduled = 0;
- b->defer_event = NULL;
-
- AVAHI_LLIST_PREPEND(AvahiSDomainBrowser, browser, server->domain_browsers, b);
-
- if (!(k = avahi_key_new(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_PTR))) {
- avahi_server_set_errno(server, AVAHI_ERR_NO_MEMORY);
- goto fail;
- }
-
- if (!(b->record_browser = avahi_s_record_browser_new(server, interface, protocol, k, flags, record_browser_callback, b)))
- goto fail;
-
- avahi_key_unref(k);
-
- if (type == AVAHI_DOMAIN_BROWSER_BROWSE && b->server->config.browse_domains)
- b->defer_event = avahi_time_event_new(server->time_event_queue, NULL, defer_callback, b);
-
- return b;
-
-fail:
-
- if (k)
- avahi_key_unref(k);
-
- avahi_s_domain_browser_free(b);
-
- return NULL;
-}
-
-void avahi_s_domain_browser_free(AvahiSDomainBrowser *b) {
- assert(b);
-
- assert(b->ref >= 1);
- if (--b->ref > 0)
- return;
-
- AVAHI_LLIST_REMOVE(AvahiSDomainBrowser, browser, b->server->domain_browsers, b);
-
- if (b->record_browser)
- avahi_s_record_browser_free(b->record_browser);
-
- if (b->defer_event)
- avahi_time_event_free(b->defer_event);
-
- avahi_free(b);
-}
projects / catta / blobdiff