0aee49bdf8
This updates the copyright header to all be the same, which is pretty much an update of where to mail request for a copy of the GPL and the years of the MPD project. This also puts all committers under 'The Music Player Project' umbrella. These entries should go individually in the AUTHORS file, for consistancy.
266 lines
6.8 KiB
C
266 lines
6.8 KiB
C
/*
|
|
* Copyright (C) 2003-2009 The Music Player Daemon Project
|
|
* http://www.musicpd.org
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#include "zeroconf-internal.h"
|
|
#include "listen.h"
|
|
|
|
#include <glib.h>
|
|
|
|
#include <avahi-client/client.h>
|
|
#include <avahi-client/publish.h>
|
|
|
|
#include <avahi-common/alternative.h>
|
|
#include <avahi-common/domain.h>
|
|
#include <avahi-common/malloc.h>
|
|
#include <avahi-common/error.h>
|
|
|
|
#include <avahi-glib/glib-watch.h>
|
|
|
|
#undef G_LOG_DOMAIN
|
|
#define G_LOG_DOMAIN "avahi"
|
|
|
|
static char *avahiName;
|
|
static int avahiRunning;
|
|
static AvahiGLibPoll *avahi_glib_poll;
|
|
static const AvahiPoll *avahi_poll;
|
|
static AvahiClient *avahiClient;
|
|
static AvahiEntryGroup *avahiGroup;
|
|
|
|
static void avahiRegisterService(AvahiClient * c);
|
|
|
|
/* Callback when the EntryGroup changes state */
|
|
static void avahiGroupCallback(AvahiEntryGroup * g,
|
|
AvahiEntryGroupState state,
|
|
G_GNUC_UNUSED void *userdata)
|
|
{
|
|
char *n;
|
|
assert(g);
|
|
|
|
g_debug("Service group changed to state %d", state);
|
|
|
|
switch (state) {
|
|
case AVAHI_ENTRY_GROUP_ESTABLISHED:
|
|
/* The entry group has been established successfully */
|
|
g_message("Service '%s' successfully established.",
|
|
avahiName);
|
|
break;
|
|
|
|
case AVAHI_ENTRY_GROUP_COLLISION:
|
|
/* A service name collision happened. Let's pick a new name */
|
|
n = avahi_alternative_service_name(avahiName);
|
|
avahi_free(avahiName);
|
|
avahiName = n;
|
|
|
|
g_message("Service name collision, renaming service to '%s'",
|
|
avahiName);
|
|
|
|
/* And recreate the services */
|
|
avahiRegisterService(avahi_entry_group_get_client(g));
|
|
break;
|
|
|
|
case AVAHI_ENTRY_GROUP_FAILURE:
|
|
g_warning("Entry group failure: %s",
|
|
avahi_strerror(avahi_client_errno
|
|
(avahi_entry_group_get_client(g))));
|
|
/* Some kind of failure happened while we were registering our services */
|
|
avahiRunning = 0;
|
|
break;
|
|
|
|
case AVAHI_ENTRY_GROUP_UNCOMMITED:
|
|
g_debug("Service group is UNCOMMITED");
|
|
break;
|
|
case AVAHI_ENTRY_GROUP_REGISTERING:
|
|
g_debug("Service group is REGISTERING");
|
|
}
|
|
}
|
|
|
|
/* Registers a new service with avahi */
|
|
static void avahiRegisterService(AvahiClient * c)
|
|
{
|
|
int ret;
|
|
assert(c);
|
|
g_debug("Registering service %s/%s", SERVICE_TYPE, avahiName);
|
|
|
|
/* If this is the first time we're called,
|
|
* let's create a new entry group */
|
|
if (!avahiGroup) {
|
|
avahiGroup = avahi_entry_group_new(c, avahiGroupCallback, NULL);
|
|
if (!avahiGroup) {
|
|
g_warning("Failed to create avahi EntryGroup: %s",
|
|
avahi_strerror(avahi_client_errno(c)));
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
/* Add the service */
|
|
/* TODO: This currently binds to ALL interfaces.
|
|
* We could maybe add a service per actual bound interface,
|
|
* if that's better. */
|
|
ret = avahi_entry_group_add_service(avahiGroup,
|
|
AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC,
|
|
0, avahiName, SERVICE_TYPE, NULL,
|
|
NULL, listen_port, NULL);
|
|
if (ret < 0) {
|
|
g_warning("Failed to add service %s: %s", SERVICE_TYPE,
|
|
avahi_strerror(ret));
|
|
goto fail;
|
|
}
|
|
|
|
/* Tell the server to register the service group */
|
|
ret = avahi_entry_group_commit(avahiGroup);
|
|
if (ret < 0) {
|
|
g_warning("Failed to commit service group: %s",
|
|
avahi_strerror(ret));
|
|
goto fail;
|
|
}
|
|
return;
|
|
|
|
fail:
|
|
avahiRunning = 0;
|
|
}
|
|
|
|
/* Callback when avahi changes state */
|
|
static void avahiClientCallback(AvahiClient * c, AvahiClientState state,
|
|
G_GNUC_UNUSED void *userdata)
|
|
{
|
|
int reason;
|
|
assert(c);
|
|
|
|
/* Called whenever the client or server state changes */
|
|
g_debug("Client changed to state %d", state);
|
|
|
|
switch (state) {
|
|
case AVAHI_CLIENT_S_RUNNING:
|
|
g_debug("Client is RUNNING");
|
|
|
|
/* The server has startup successfully and registered its host
|
|
* name on the network, so it's time to create our services */
|
|
if (!avahiGroup)
|
|
avahiRegisterService(c);
|
|
break;
|
|
|
|
case AVAHI_CLIENT_FAILURE:
|
|
reason = avahi_client_errno(c);
|
|
if (reason == AVAHI_ERR_DISCONNECTED) {
|
|
g_message("Client Disconnected, will reconnect shortly");
|
|
if (avahiGroup) {
|
|
avahi_entry_group_free(avahiGroup);
|
|
avahiGroup = NULL;
|
|
}
|
|
if (avahiClient)
|
|
avahi_client_free(avahiClient);
|
|
avahiClient =
|
|
avahi_client_new(avahi_poll,
|
|
AVAHI_CLIENT_NO_FAIL,
|
|
avahiClientCallback, NULL,
|
|
&reason);
|
|
if (!avahiClient) {
|
|
g_warning("Could not reconnect: %s",
|
|
avahi_strerror(reason));
|
|
avahiRunning = 0;
|
|
}
|
|
} else {
|
|
g_warning("Client failure: %s (terminal)",
|
|
avahi_strerror(reason));
|
|
avahiRunning = 0;
|
|
}
|
|
break;
|
|
|
|
case AVAHI_CLIENT_S_COLLISION:
|
|
g_debug("Client is COLLISION");
|
|
/* Let's drop our registered services. When the server is back
|
|
* in AVAHI_SERVER_RUNNING state we will register them
|
|
* again with the new host name. */
|
|
if (avahiGroup) {
|
|
g_debug("Resetting group");
|
|
avahi_entry_group_reset(avahiGroup);
|
|
}
|
|
|
|
case AVAHI_CLIENT_S_REGISTERING:
|
|
g_debug("Client is REGISTERING");
|
|
/* The server records are now being established. This
|
|
* might be caused by a host name change. We need to wait
|
|
* for our own records to register until the host name is
|
|
* properly esatblished. */
|
|
|
|
if (avahiGroup) {
|
|
g_debug("Resetting group");
|
|
avahi_entry_group_reset(avahiGroup);
|
|
}
|
|
|
|
break;
|
|
|
|
case AVAHI_CLIENT_CONNECTING:
|
|
g_debug("Client is CONNECTING");
|
|
}
|
|
}
|
|
|
|
void init_avahi(const char *serviceName)
|
|
{
|
|
int error;
|
|
g_debug("Initializing interface");
|
|
|
|
if (!avahi_is_valid_service_name(serviceName))
|
|
g_error("Invalid zeroconf_name \"%s\"", serviceName);
|
|
|
|
avahiName = avahi_strdup(serviceName);
|
|
|
|
avahiRunning = 1;
|
|
|
|
avahi_glib_poll = avahi_glib_poll_new(NULL, G_PRIORITY_DEFAULT);
|
|
avahi_poll = avahi_glib_poll_get(avahi_glib_poll);
|
|
|
|
avahiClient = avahi_client_new(avahi_poll, AVAHI_CLIENT_NO_FAIL,
|
|
avahiClientCallback, NULL, &error);
|
|
|
|
if (!avahiClient) {
|
|
g_warning("Failed to create client: %s",
|
|
avahi_strerror(error));
|
|
goto fail;
|
|
}
|
|
|
|
return;
|
|
|
|
fail:
|
|
avahi_finish();
|
|
}
|
|
|
|
void avahi_finish(void)
|
|
{
|
|
g_debug("Shutting down interface");
|
|
|
|
if (avahiGroup) {
|
|
avahi_entry_group_free(avahiGroup);
|
|
avahiGroup = NULL;
|
|
}
|
|
|
|
if (avahiClient) {
|
|
avahi_client_free(avahiClient);
|
|
avahiClient = NULL;
|
|
}
|
|
|
|
if (avahi_glib_poll != NULL) {
|
|
avahi_glib_poll_free(avahi_glib_poll);
|
|
avahi_glib_poll = NULL;
|
|
}
|
|
|
|
avahi_free(avahiName);
|
|
avahiName = NULL;
|
|
}
|