958 lines
30 KiB
C
958 lines
30 KiB
C
/***
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This file is part of avahi.
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avahi is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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avahi is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with avahi; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <dbus/dbus.h>
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#include <avahi-common/dbus.h>
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#include <avahi-common/llist.h>
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#include <avahi-common/error.h>
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#include <avahi-common/dbus.h>
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#include "avahi-common/avahi-malloc.h"
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#include <avahi-common/dbus-watch-glue.h>
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#include <avahi-common/i18n.h>
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#include "client.h"
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#include "internal.h"
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#define AVAHI_CLIENT_DBUS_API_SUPPORTED ((uint32_t) 0x0201)
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static int init_server(AvahiClient *client, int *ret_error);
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int avahi_client_set_errno (AvahiClient *client, int error) {
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assert(client);
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return client->error = error;
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}
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int avahi_client_set_dbus_error(AvahiClient *client, DBusError *error) {
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assert(client);
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assert(error);
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return avahi_client_set_errno(client, avahi_error_dbus_to_number(error->name));
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}
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static void client_set_state(AvahiClient *client, AvahiClientState state) {
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assert(client);
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if (client->state == state)
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return;
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client->state = state;
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switch (client->state) {
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case AVAHI_CLIENT_FAILURE:
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if (client->bus) {
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#ifdef HAVE_DBUS_CONNECTION_CLOSE
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dbus_connection_close(client->bus);
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#else
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dbus_connection_disconnect(client->bus);
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#endif
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dbus_connection_unref(client->bus);
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client->bus = NULL;
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}
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/* Fall through */
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case AVAHI_CLIENT_S_COLLISION:
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case AVAHI_CLIENT_S_REGISTERING:
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/* Clear cached strings */
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avahi_free(client->host_name);
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avahi_free(client->host_name_fqdn);
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avahi_free(client->domain_name);
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client->host_name = NULL;
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client->host_name_fqdn = NULL;
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client->domain_name = NULL;
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break;
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case AVAHI_CLIENT_S_RUNNING:
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case AVAHI_CLIENT_CONNECTING:
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break;
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}
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if (client->callback)
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client->callback (client, state, client->userdata);
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}
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static DBusHandlerResult filter_func(DBusConnection *bus, DBusMessage *message, void *userdata) {
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AvahiClient *client = userdata;
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DBusError error;
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assert(bus);
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assert(message);
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dbus_error_init(&error);
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/* fprintf(stderr, "dbus: interface=%s, path=%s, member=%s\n", */
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/* dbus_message_get_interface (message), */
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/* dbus_message_get_path (message), */
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/* dbus_message_get_member (message)); */
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if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
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/* The DBUS server died or kicked us */
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avahi_client_set_errno(client, AVAHI_ERR_DISCONNECTED);
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goto fail;
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} else if (dbus_message_is_signal(message, DBUS_INTERFACE_DBUS, "NameAcquired")) {
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/* Ignore this message */
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} else if (dbus_message_is_signal(message, DBUS_INTERFACE_DBUS, "NameOwnerChanged")) {
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char *name, *old, *new;
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if (!dbus_message_get_args(
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message, &error,
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DBUS_TYPE_STRING, &name,
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DBUS_TYPE_STRING, &old,
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DBUS_TYPE_STRING, &new,
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DBUS_TYPE_INVALID) || dbus_error_is_set(&error)) {
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fprintf(stderr, "WARNING: Failed to parse NameOwnerChanged signal: %s\n", error.message);
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avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
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goto fail;
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}
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if (strcmp(name, AVAHI_DBUS_NAME) == 0) {
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if (old[0] &&
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avahi_client_is_connected(client)) {
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/* Regardless if the server lost its name or
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* if the name was transfered: our services are no longer
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* available, so we disconnect ourselves */
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avahi_client_set_errno(client, AVAHI_ERR_DISCONNECTED);
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goto fail;
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} else if (client->state == AVAHI_CLIENT_CONNECTING && (!old || *old == 0)) {
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int ret;
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/* Server appeared */
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if ((ret = init_server(client, NULL)) < 0) {
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avahi_client_set_errno(client, ret);
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goto fail;
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}
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}
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}
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} else if (!avahi_client_is_connected(client)) {
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/* Ignore messages we get in unconnected state */
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} else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVER, "StateChanged")) {
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int32_t state;
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char *e = NULL;
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int c;
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if (!dbus_message_get_args(
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message, &error,
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DBUS_TYPE_INT32, &state,
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DBUS_TYPE_STRING, &e,
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DBUS_TYPE_INVALID) || dbus_error_is_set (&error)) {
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fprintf(stderr, "WARNING: Failed to parse Server.StateChanged signal: %s\n", error.message);
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avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
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goto fail;
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}
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if ((c = avahi_error_dbus_to_number(e)) != AVAHI_OK)
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avahi_client_set_errno(client, c);
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client_set_state(client, (AvahiClientState) state);
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} else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "StateChanged")) {
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const char *path;
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AvahiEntryGroup *g;
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path = dbus_message_get_path(message);
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for (g = client->groups; g; g = g->groups_next)
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if (strcmp(g->path, path) == 0)
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break;
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if (g) {
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int32_t state;
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char *e;
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int c;
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if (!dbus_message_get_args(
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message, &error,
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DBUS_TYPE_INT32, &state,
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DBUS_TYPE_STRING, &e,
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DBUS_TYPE_INVALID) ||
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dbus_error_is_set(&error)) {
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fprintf(stderr, "WARNING: Failed to parse EntryGroup.StateChanged signal: %s\n", error.message);
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avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
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goto fail;
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}
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if ((c = avahi_error_dbus_to_number(e)) != AVAHI_OK)
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avahi_client_set_errno(client, c);
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avahi_entry_group_set_state(g, state);
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}
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} else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "ItemNew"))
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return avahi_domain_browser_event(client, AVAHI_BROWSER_NEW, message);
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else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "ItemRemove"))
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return avahi_domain_browser_event(client, AVAHI_BROWSER_REMOVE, message);
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else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "CacheExhausted"))
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return avahi_domain_browser_event(client, AVAHI_BROWSER_CACHE_EXHAUSTED, message);
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else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "AllForNow"))
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return avahi_domain_browser_event(client, AVAHI_BROWSER_ALL_FOR_NOW, message);
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else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "Failure"))
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return avahi_domain_browser_event(client, AVAHI_BROWSER_FAILURE, message);
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else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "ItemNew"))
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return avahi_service_type_browser_event (client, AVAHI_BROWSER_NEW, message);
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else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "ItemRemove"))
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return avahi_service_type_browser_event (client, AVAHI_BROWSER_REMOVE, message);
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else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "CacheExhausted"))
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return avahi_service_type_browser_event (client, AVAHI_BROWSER_CACHE_EXHAUSTED, message);
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else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "AllForNow"))
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return avahi_service_type_browser_event (client, AVAHI_BROWSER_ALL_FOR_NOW, message);
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else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "Failure"))
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return avahi_service_type_browser_event (client, AVAHI_BROWSER_FAILURE, message);
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else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "ItemNew"))
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return avahi_service_browser_event (client, AVAHI_BROWSER_NEW, message);
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else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "ItemRemove"))
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return avahi_service_browser_event (client, AVAHI_BROWSER_REMOVE, message);
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else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "CacheExhausted"))
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return avahi_service_browser_event (client, AVAHI_BROWSER_CACHE_EXHAUSTED, message);
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else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "AllForNow"))
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return avahi_service_browser_event (client, AVAHI_BROWSER_ALL_FOR_NOW, message);
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else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "Failure"))
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return avahi_service_browser_event (client, AVAHI_BROWSER_FAILURE, message);
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else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_RESOLVER, "Found"))
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return avahi_service_resolver_event (client, AVAHI_RESOLVER_FOUND, message);
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else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_RESOLVER, "Failure"))
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return avahi_service_resolver_event (client, AVAHI_RESOLVER_FAILURE, message);
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else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_HOST_NAME_RESOLVER, "Found"))
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return avahi_host_name_resolver_event (client, AVAHI_RESOLVER_FOUND, message);
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else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_HOST_NAME_RESOLVER, "Failure"))
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return avahi_host_name_resolver_event (client, AVAHI_RESOLVER_FAILURE, message);
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else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_ADDRESS_RESOLVER, "Found"))
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return avahi_address_resolver_event (client, AVAHI_RESOLVER_FOUND, message);
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else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_ADDRESS_RESOLVER, "Failure"))
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return avahi_address_resolver_event (client, AVAHI_RESOLVER_FAILURE, message);
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else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_RECORD_BROWSER, "ItemNew"))
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return avahi_record_browser_event (client, AVAHI_BROWSER_NEW, message);
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else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_RECORD_BROWSER, "ItemRemove"))
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return avahi_record_browser_event (client, AVAHI_BROWSER_REMOVE, message);
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else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_RECORD_BROWSER, "CacheExhausted"))
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return avahi_record_browser_event (client, AVAHI_BROWSER_CACHE_EXHAUSTED, message);
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else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_RECORD_BROWSER, "AllForNow"))
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return avahi_record_browser_event (client, AVAHI_BROWSER_ALL_FOR_NOW, message);
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else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_RECORD_BROWSER, "Failure"))
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return avahi_record_browser_event (client, AVAHI_BROWSER_FAILURE, message);
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else {
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fprintf(stderr, "WARNING: Unhandled message: interface=%s, path=%s, member=%s\n",
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dbus_message_get_interface(message),
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dbus_message_get_path(message),
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dbus_message_get_member(message));
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return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
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}
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return DBUS_HANDLER_RESULT_HANDLED;
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fail:
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if (dbus_error_is_set(&error)) {
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avahi_client_set_errno(client, avahi_error_dbus_to_number(error.name));
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dbus_error_free(&error);
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}
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client_set_state(client, AVAHI_CLIENT_FAILURE);
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return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
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}
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static int get_server_state(AvahiClient *client, int *ret_error) {
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DBusMessage *message = NULL, *reply = NULL;
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DBusError error;
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int32_t state;
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int e = AVAHI_ERR_NO_MEMORY;
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assert(client);
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dbus_error_init(&error);
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if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "GetState")))
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goto fail;
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reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
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if (!reply || dbus_error_is_set (&error))
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goto fail;
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if (!dbus_message_get_args(reply, &error, DBUS_TYPE_INT32, &state, DBUS_TYPE_INVALID) ||
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dbus_error_is_set (&error))
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goto fail;
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client_set_state(client, (AvahiClientState) state);
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dbus_message_unref(message);
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dbus_message_unref(reply);
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return AVAHI_OK;
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fail:
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if (dbus_error_is_set(&error)) {
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e = avahi_error_dbus_to_number (error.name);
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dbus_error_free(&error);
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}
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if (ret_error)
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*ret_error = e;
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if (message)
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dbus_message_unref(message);
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if (reply)
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dbus_message_unref(reply);
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return e;
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}
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static int check_version(AvahiClient *client, int *ret_error) {
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DBusMessage *message = NULL, *reply = NULL;
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DBusError error;
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uint32_t version;
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int e = AVAHI_ERR_NO_MEMORY;
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assert(client);
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dbus_error_init(&error);
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if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "GetAPIVersion")))
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goto fail;
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reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
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if (!reply || dbus_error_is_set (&error)) {
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char *version_str;
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if (!dbus_error_is_set(&error) || strcmp(error.name, DBUS_ERROR_UNKNOWN_METHOD))
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goto fail;
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/* If the method GetAPIVersion is not known, we look if
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* GetVersionString matches "avahi 0.6" which is the only
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* version we support which doesn't have GetAPIVersion() .*/
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dbus_message_unref(message);
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if (reply) dbus_message_unref(reply);
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dbus_error_free(&error);
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if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "GetVersionString")))
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goto fail;
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reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
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if (!reply || dbus_error_is_set (&error))
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goto fail;
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if (!dbus_message_get_args (reply, &error, DBUS_TYPE_STRING, &version_str, DBUS_TYPE_INVALID) ||
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dbus_error_is_set (&error))
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goto fail;
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version = strcmp(version_str, "avahi 0.6") == 0 ? 0x0201 : 0x0000;
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} else {
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if (!dbus_message_get_args (reply, &error, DBUS_TYPE_UINT32, &version, DBUS_TYPE_INVALID) ||
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dbus_error_is_set(&error))
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goto fail;
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}
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/*fprintf(stderr, "API Version 0x%04x\n", version);*/
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if ((version & 0xFF00) != (AVAHI_CLIENT_DBUS_API_SUPPORTED & 0xFF00) ||
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(version & 0x00FF) < (AVAHI_CLIENT_DBUS_API_SUPPORTED & 0x00FF)) {
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e = AVAHI_ERR_VERSION_MISMATCH;
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goto fail;
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}
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dbus_message_unref(message);
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dbus_message_unref(reply);
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return AVAHI_OK;
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fail:
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if (dbus_error_is_set(&error)) {
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e = avahi_error_dbus_to_number (error.name);
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dbus_error_free(&error);
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}
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if (ret_error)
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*ret_error = e;
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if (message)
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dbus_message_unref(message);
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if (reply)
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dbus_message_unref(reply);
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return e;
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}
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static int init_server(AvahiClient *client, int *ret_error) {
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int r;
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if ((r = check_version(client, ret_error)) < 0)
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return r;
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if ((r = get_server_state(client, ret_error)) < 0)
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return r;
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return AVAHI_OK;
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}
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/* This function acts like dbus_bus_get but creates a private
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* connection instead. */
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static DBusConnection* avahi_dbus_bus_get(DBusError *error) {
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DBusConnection *c;
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#ifdef HAVE_DBUS_BUS_GET_PRIVATE
|
|
if (!(c = dbus_bus_get_private(DBUS_BUS_SYSTEM, error)))
|
|
return NULL;
|
|
|
|
dbus_connection_set_exit_on_disconnect(c, FALSE);
|
|
#else
|
|
const char *a;
|
|
|
|
if (!(a = getenv("DBUS_SYSTEM_BUS_ADDRESS")) || !*a)
|
|
a = DBUS_SYSTEM_BUS_DEFAULT_ADDRESS;
|
|
|
|
if (!(c = dbus_connection_open_private(a, error)))
|
|
return NULL;
|
|
|
|
dbus_connection_set_exit_on_disconnect(c, FALSE);
|
|
|
|
if (!dbus_bus_register(c, error)) {
|
|
#ifdef HAVE_DBUS_CONNECTION_CLOSE
|
|
dbus_connection_close(c);
|
|
#else
|
|
dbus_connection_disconnect(c);
|
|
#endif
|
|
dbus_connection_unref(c);
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
return c;
|
|
}
|
|
|
|
AvahiClient *avahi_client_new(const AvahiPoll *poll_api, AvahiClientFlags flags, AvahiClientCallback callback, void *userdata, int *ret_error) {
|
|
AvahiClient *client = NULL;
|
|
DBusError error;
|
|
DBusMessage *message = NULL, *reply = NULL;
|
|
|
|
avahi_init_i18n();
|
|
|
|
dbus_error_init(&error);
|
|
|
|
if (!(client = avahi_new(AvahiClient, 1))) {
|
|
if (ret_error)
|
|
*ret_error = AVAHI_ERR_NO_MEMORY;
|
|
goto fail;
|
|
}
|
|
|
|
client->poll_api = poll_api;
|
|
client->error = AVAHI_OK;
|
|
client->callback = callback;
|
|
client->userdata = userdata;
|
|
client->state = (AvahiClientState) -1;
|
|
client->flags = flags;
|
|
|
|
client->host_name = NULL;
|
|
client->host_name_fqdn = NULL;
|
|
client->domain_name = NULL;
|
|
client->version_string = NULL;
|
|
client->local_service_cookie_valid = 0;
|
|
|
|
AVAHI_LLIST_HEAD_INIT(AvahiEntryGroup, client->groups);
|
|
AVAHI_LLIST_HEAD_INIT(AvahiDomainBrowser, client->domain_browsers);
|
|
AVAHI_LLIST_HEAD_INIT(AvahiServiceBrowser, client->service_browsers);
|
|
AVAHI_LLIST_HEAD_INIT(AvahiServiceTypeBrowser, client->service_type_browsers);
|
|
AVAHI_LLIST_HEAD_INIT(AvahiServiceResolver, client->service_resolvers);
|
|
AVAHI_LLIST_HEAD_INIT(AvahiHostNameResolver, client->host_name_resolvers);
|
|
AVAHI_LLIST_HEAD_INIT(AvahiAddressResolver, client->address_resolvers);
|
|
AVAHI_LLIST_HEAD_INIT(AvahiRecordBrowser, client->record_browsers);
|
|
|
|
if (!(client->bus = avahi_dbus_bus_get(&error)) || dbus_error_is_set(&error)) {
|
|
if (ret_error)
|
|
*ret_error = AVAHI_ERR_DBUS_ERROR;
|
|
goto fail;
|
|
}
|
|
|
|
if (avahi_dbus_connection_glue(client->bus, poll_api) < 0) {
|
|
if (ret_error)
|
|
*ret_error = AVAHI_ERR_NO_MEMORY; /* Not optimal */
|
|
goto fail;
|
|
}
|
|
|
|
if (!dbus_connection_add_filter(client->bus, filter_func, client, NULL)) {
|
|
if (ret_error)
|
|
*ret_error = AVAHI_ERR_NO_MEMORY;
|
|
goto fail;
|
|
}
|
|
|
|
dbus_bus_add_match(
|
|
client->bus,
|
|
"type='signal', "
|
|
"interface='" AVAHI_DBUS_INTERFACE_SERVER "', "
|
|
"sender='" AVAHI_DBUS_NAME "', "
|
|
"path='" AVAHI_DBUS_PATH_SERVER "'",
|
|
&error);
|
|
|
|
if (dbus_error_is_set(&error))
|
|
goto fail;
|
|
|
|
dbus_bus_add_match (
|
|
client->bus,
|
|
"type='signal', "
|
|
"interface='" DBUS_INTERFACE_DBUS "', "
|
|
"sender='" DBUS_SERVICE_DBUS "', "
|
|
"path='" DBUS_PATH_DBUS "'",
|
|
&error);
|
|
|
|
if (dbus_error_is_set(&error))
|
|
goto fail;
|
|
|
|
dbus_bus_add_match(
|
|
client->bus,
|
|
"type='signal', "
|
|
"interface='" DBUS_INTERFACE_LOCAL "'",
|
|
&error);
|
|
|
|
if (dbus_error_is_set(&error))
|
|
goto fail;
|
|
|
|
if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, "org.freedesktop.DBus.Peer", "Ping")))
|
|
goto fail;
|
|
|
|
reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
|
|
|
|
if (!reply || dbus_error_is_set (&error)) {
|
|
/* We free the error so its not set, that way the fail target
|
|
* will return the NO_DAEMON error rather than a DBUS error */
|
|
dbus_error_free(&error);
|
|
|
|
if (!(flags & AVAHI_CLIENT_NO_FAIL)) {
|
|
|
|
if (ret_error)
|
|
*ret_error = AVAHI_ERR_NO_DAEMON;
|
|
|
|
goto fail;
|
|
}
|
|
|
|
/* The user doesn't want this call to fail if the daemon is not
|
|
* available, so let's return succesfully */
|
|
client_set_state(client, AVAHI_CLIENT_CONNECTING);
|
|
|
|
} else {
|
|
|
|
if (init_server(client, ret_error) < 0)
|
|
goto fail;
|
|
}
|
|
|
|
dbus_message_unref(message);
|
|
|
|
if (reply)
|
|
dbus_message_unref(reply);
|
|
|
|
return client;
|
|
|
|
fail:
|
|
|
|
if (message)
|
|
dbus_message_unref(message);
|
|
if (reply)
|
|
dbus_message_unref(reply);
|
|
|
|
if (client)
|
|
avahi_client_free(client);
|
|
|
|
if (dbus_error_is_set(&error)) {
|
|
|
|
if (ret_error) {
|
|
if (strcmp(error.name, DBUS_ERROR_FILE_NOT_FOUND) == 0)
|
|
/* DBUS returns this error when the DBUS daemon is not running */
|
|
*ret_error = AVAHI_ERR_NO_DAEMON;
|
|
else
|
|
*ret_error = avahi_error_dbus_to_number(error.name);
|
|
}
|
|
|
|
dbus_error_free(&error);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
void avahi_client_free(AvahiClient *client) {
|
|
assert(client);
|
|
|
|
if (client->bus)
|
|
/* Disconnect in advance, so that the free() functions won't
|
|
* issue needless server calls */
|
|
#ifdef HAVE_DBUS_CONNECTION_CLOSE
|
|
dbus_connection_close(client->bus);
|
|
#else
|
|
dbus_connection_disconnect(client->bus);
|
|
#endif
|
|
|
|
while (client->groups)
|
|
avahi_entry_group_free(client->groups);
|
|
|
|
while (client->domain_browsers)
|
|
avahi_domain_browser_free(client->domain_browsers);
|
|
|
|
while (client->service_browsers)
|
|
avahi_service_browser_free(client->service_browsers);
|
|
|
|
while (client->service_type_browsers)
|
|
avahi_service_type_browser_free(client->service_type_browsers);
|
|
|
|
while (client->service_resolvers)
|
|
avahi_service_resolver_free(client->service_resolvers);
|
|
|
|
while (client->host_name_resolvers)
|
|
avahi_host_name_resolver_free(client->host_name_resolvers);
|
|
|
|
while (client->address_resolvers)
|
|
avahi_address_resolver_free(client->address_resolvers);
|
|
|
|
while (client->record_browsers)
|
|
avahi_record_browser_free(client->record_browsers);
|
|
|
|
if (client->bus)
|
|
dbus_connection_unref(client->bus);
|
|
|
|
avahi_free(client->version_string);
|
|
avahi_free(client->host_name);
|
|
avahi_free(client->host_name_fqdn);
|
|
avahi_free(client->domain_name);
|
|
|
|
avahi_free(client);
|
|
}
|
|
|
|
static char* avahi_client_get_string_reply_and_block (AvahiClient *client, const char *method, const char *param) {
|
|
DBusMessage *message = NULL, *reply = NULL;
|
|
DBusError error;
|
|
char *ret, *n;
|
|
|
|
assert(client);
|
|
assert(method);
|
|
|
|
dbus_error_init (&error);
|
|
|
|
if (!(message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, method))) {
|
|
avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
|
|
goto fail;
|
|
}
|
|
|
|
if (param) {
|
|
if (!dbus_message_append_args (message, DBUS_TYPE_STRING, ¶m, DBUS_TYPE_INVALID)) {
|
|
avahi_client_set_errno (client, AVAHI_ERR_NO_MEMORY);
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
|
|
|
|
if (!reply || dbus_error_is_set (&error))
|
|
goto fail;
|
|
|
|
if (!dbus_message_get_args (reply, &error, DBUS_TYPE_STRING, &ret, DBUS_TYPE_INVALID) ||
|
|
dbus_error_is_set (&error))
|
|
goto fail;
|
|
|
|
if (!(n = avahi_strdup(ret))) {
|
|
avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
|
|
goto fail;
|
|
}
|
|
|
|
dbus_message_unref(message);
|
|
dbus_message_unref(reply);
|
|
|
|
return n;
|
|
|
|
fail:
|
|
|
|
if (message)
|
|
dbus_message_unref(message);
|
|
if (reply)
|
|
dbus_message_unref(reply);
|
|
|
|
if (dbus_error_is_set(&error)) {
|
|
avahi_client_set_dbus_error(client, &error);
|
|
dbus_error_free(&error);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
const char* avahi_client_get_version_string(AvahiClient *client) {
|
|
assert(client);
|
|
|
|
if (!avahi_client_is_connected(client)) {
|
|
avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
|
|
return NULL;
|
|
}
|
|
|
|
if (!client->version_string)
|
|
client->version_string = avahi_client_get_string_reply_and_block(client, "GetVersionString", NULL);
|
|
|
|
return client->version_string;
|
|
}
|
|
|
|
const char* avahi_client_get_domain_name(AvahiClient *client) {
|
|
assert(client);
|
|
|
|
if (!avahi_client_is_connected(client)) {
|
|
avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
|
|
return NULL;
|
|
}
|
|
|
|
if (!client->domain_name)
|
|
client->domain_name = avahi_client_get_string_reply_and_block(client, "GetDomainName", NULL);
|
|
|
|
return client->domain_name;
|
|
}
|
|
|
|
const char* avahi_client_get_host_name(AvahiClient *client) {
|
|
assert(client);
|
|
|
|
if (!avahi_client_is_connected(client)) {
|
|
avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
|
|
return NULL;
|
|
}
|
|
|
|
if (!client->host_name)
|
|
client->host_name = avahi_client_get_string_reply_and_block(client, "GetHostName", NULL);
|
|
|
|
return client->host_name;
|
|
}
|
|
|
|
const char* avahi_client_get_host_name_fqdn (AvahiClient *client) {
|
|
assert(client);
|
|
|
|
if (!avahi_client_is_connected(client)) {
|
|
avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
|
|
return NULL;
|
|
}
|
|
|
|
if (!client->host_name_fqdn)
|
|
client->host_name_fqdn = avahi_client_get_string_reply_and_block(client, "GetHostNameFqdn", NULL);
|
|
|
|
return client->host_name_fqdn;
|
|
}
|
|
|
|
AvahiClientState avahi_client_get_state(AvahiClient *client) {
|
|
assert(client);
|
|
|
|
return client->state;
|
|
}
|
|
|
|
int avahi_client_errno(AvahiClient *client) {
|
|
assert(client);
|
|
|
|
return client->error;
|
|
}
|
|
|
|
/* Just for internal use */
|
|
int avahi_client_simple_method_call(AvahiClient *client, const char *path, const char *interface, const char *method) {
|
|
DBusMessage *message = NULL, *reply = NULL;
|
|
DBusError error;
|
|
int r = AVAHI_OK;
|
|
|
|
dbus_error_init(&error);
|
|
|
|
assert(client);
|
|
assert(path);
|
|
assert(interface);
|
|
assert(method);
|
|
|
|
if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, path, interface, method))) {
|
|
r = avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
|
|
goto fail;
|
|
}
|
|
|
|
if (!(reply = dbus_connection_send_with_reply_and_block(client->bus, message, -1, &error)) ||
|
|
dbus_error_is_set (&error)) {
|
|
r = avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
|
|
goto fail;
|
|
}
|
|
|
|
if (!dbus_message_get_args(reply, &error, DBUS_TYPE_INVALID) ||
|
|
dbus_error_is_set (&error)) {
|
|
r = avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
|
|
goto fail;
|
|
}
|
|
|
|
dbus_message_unref(message);
|
|
dbus_message_unref(reply);
|
|
|
|
return AVAHI_OK;
|
|
|
|
fail:
|
|
if (dbus_error_is_set(&error)) {
|
|
r = avahi_client_set_dbus_error(client, &error);
|
|
dbus_error_free(&error);
|
|
}
|
|
|
|
if (message)
|
|
dbus_message_unref(message);
|
|
|
|
if (reply)
|
|
dbus_message_unref(reply);
|
|
|
|
return r;
|
|
}
|
|
|
|
uint32_t avahi_client_get_local_service_cookie(AvahiClient *client) {
|
|
DBusMessage *message = NULL, *reply = NULL;
|
|
DBusError error;
|
|
assert(client);
|
|
|
|
if (!avahi_client_is_connected(client)) {
|
|
avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
|
|
return AVAHI_SERVICE_COOKIE_INVALID;
|
|
}
|
|
|
|
if (client->local_service_cookie_valid)
|
|
return client->local_service_cookie;
|
|
|
|
dbus_error_init (&error);
|
|
|
|
if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "GetLocalServiceCookie"))) {
|
|
avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
|
|
goto fail;
|
|
}
|
|
|
|
reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
|
|
|
|
if (!reply || dbus_error_is_set (&error))
|
|
goto fail;
|
|
|
|
if (!dbus_message_get_args (reply, &error, DBUS_TYPE_UINT32, &client->local_service_cookie, DBUS_TYPE_INVALID) ||
|
|
dbus_error_is_set (&error))
|
|
goto fail;
|
|
|
|
dbus_message_unref(message);
|
|
dbus_message_unref(reply);
|
|
|
|
client->local_service_cookie_valid = 1;
|
|
return client->local_service_cookie;
|
|
|
|
fail:
|
|
|
|
if (message)
|
|
dbus_message_unref(message);
|
|
if (reply)
|
|
dbus_message_unref(reply);
|
|
|
|
if (dbus_error_is_set(&error)) {
|
|
avahi_client_set_dbus_error(client, &error);
|
|
dbus_error_free(&error);
|
|
}
|
|
|
|
return AVAHI_SERVICE_COOKIE_INVALID;
|
|
}
|
|
|
|
int avahi_client_is_connected(AvahiClient *client) {
|
|
assert(client);
|
|
|
|
return
|
|
client->bus &&
|
|
dbus_connection_get_is_connected(client->bus) &&
|
|
(client->state == AVAHI_CLIENT_S_RUNNING || client->state == AVAHI_CLIENT_S_REGISTERING || client->state == AVAHI_CLIENT_S_COLLISION);
|
|
}
|
|
|
|
int avahi_client_set_host_name(AvahiClient* client, const char *name) {
|
|
DBusMessage *message = NULL, *reply = NULL;
|
|
DBusError error;
|
|
|
|
assert(client);
|
|
|
|
if (!avahi_client_is_connected(client))
|
|
return avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
|
|
|
|
dbus_error_init (&error);
|
|
|
|
if (!(message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "SetHostName"))) {
|
|
avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
|
|
goto fail;
|
|
}
|
|
|
|
if (!dbus_message_append_args (message, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID)) {
|
|
avahi_client_set_errno (client, AVAHI_ERR_NO_MEMORY);
|
|
goto fail;
|
|
}
|
|
|
|
reply = dbus_connection_send_with_reply_and_block(client->bus, message, -1, &error);
|
|
|
|
if (!reply || dbus_error_is_set (&error))
|
|
goto fail;
|
|
|
|
if (!dbus_message_get_args(reply, &error, DBUS_TYPE_INVALID) ||
|
|
dbus_error_is_set (&error))
|
|
goto fail;
|
|
|
|
dbus_message_unref(message);
|
|
dbus_message_unref(reply);
|
|
|
|
avahi_free(client->host_name);
|
|
client->host_name = NULL;
|
|
avahi_free(client->host_name_fqdn);
|
|
client->host_name_fqdn = NULL;
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
|
|
if (message)
|
|
dbus_message_unref(message);
|
|
if (reply)
|
|
dbus_message_unref(reply);
|
|
|
|
if (dbus_error_is_set(&error)) {
|
|
avahi_client_set_dbus_error(client, &error);
|
|
dbus_error_free(&error);
|
|
}
|
|
|
|
return client->error;
|
|
}
|