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/*
* Copyright (C) 2003-2011 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 "config.h"
#include "listen.h"
#include "server_socket.h"
#include "client.h"
#include "conf.h"
#include "main.h"
#include <string.h>
#include <assert.h>
#ifdef ENABLE_SYSTEMD_DAEMON
#include <systemd/sd-daemon.h>
#endif
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "listen"
#define DEFAULT_PORT 6600
static struct server_socket *listen_socket;
int listen_port;
static void
listen_callback(int fd, const struct sockaddr *address,
size_t address_length, int uid, G_GNUC_UNUSED void *ctx)
{
client_new(global_player_control, fd, address, address_length, uid);
}
static bool
listen_add_config_param(unsigned int port,
const struct config_param *param,
GError **error_r)
{
assert(param != NULL);
if (0 == strcmp(param->value, "any")) {
return server_socket_add_port(listen_socket, port, error_r);
} else if (param->value[0] == '/') {
return server_socket_add_path(listen_socket, param->value,
error_r);
} else {
return server_socket_add_host(listen_socket, param->value,
port, error_r);
}
}
static bool
listen_systemd_activation(GError **error_r)
{
#ifdef ENABLE_SYSTEMD_DAEMON
int n = sd_listen_fds(true);
if (n <= 0) {
if (n < 0)
g_warning("sd_listen_fds() failed: %s",
g_strerror(-n));
return false;
}
for (int i = SD_LISTEN_FDS_START, end = SD_LISTEN_FDS_START + n;
i != end; ++i)
if (!server_socket_add_fd(listen_socket, i, error_r))
return false;
return true;
#else
(void)error_r;
return false;
#endif
}
bool
listen_global_init(GError **error_r)
{
int port = config_get_positive(CONF_PORT, DEFAULT_PORT);
const struct config_param *param =
config_get_next_param(CONF_BIND_TO_ADDRESS, NULL);
bool success;
GError *error = NULL;
listen_socket = server_socket_new(listen_callback, NULL);
if (listen_systemd_activation(&error))
return true;
if (error != NULL) {
g_propagate_error(error_r, error);
return false;
}
if (param != NULL) {
/* "bind_to_address" is configured, create listeners
for all values */
do {
success = listen_add_config_param(port, param, &error);
if (!success) {
g_propagate_prefixed_error(error_r, error,
"Failed to listen on %s (line %i): ",
param->value, param->line);
return false;
}
param = config_get_next_param(CONF_BIND_TO_ADDRESS,
param);
} while (param != NULL);
} else {
/* no "bind_to_address" configured, bind the
configured port on all interfaces */
success = server_socket_add_port(listen_socket, port, error_r);
if (!success) {
g_propagate_prefixed_error(error_r, error,
"Failed to listen on *:%d: ",
port);
return false;
}
}
if (!server_socket_open(listen_socket, error_r))
return false;
listen_port = port;
return true;
}
void listen_global_finish(void)
{
g_debug("listen_global_finish called");
assert(listen_socket != NULL);
server_socket_free(listen_socket);
}
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