2 * This file is part of DisOrder.
3 * Copyright (C) 2004, 2005, 2007-2009 Richard Kettlewell
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 /** @file server/state.c
19 * @brief Global server state
21 #include "disorder-server.h"
23 /** @brief Current AF_UNIX socket path */
24 static const char *current_unix;
26 /** @brief Current AF_UNIX socket */
27 static int current_unix_fd;
29 /** @brief TCP listener definition */
31 /** @brief Next listener */
32 struct listener *next;
34 /** @brief Local socket address */
37 /** @brief File descriptor */
41 /** @brief Current listeners */
42 static struct listener *listeners;
44 /** @brief Current audio API */
45 const struct uaudio *api;
47 /** @brief Quit DisOrder */
48 void quit(ev_source *ev) {
49 disorder_info("shutting down...");
53 /* Shutdown subprocesses.
55 * Subprocesses that use ev_child:
57 * - the current rescan
62 * - the deadlock manager
64 * Subprocesses that don't:
66 * These are not shut down currently.
69 disorder_info("exiting");
73 /** @brief Create a copy of an @c addrinfo structure */
74 static struct sockaddr *copy_sockaddr(const struct addrinfo *addr) {
75 struct sockaddr *sa = xmalloc_noptr(addr->ai_addrlen);
76 memcpy(sa, addr->ai_addr, addr->ai_addrlen);
80 /** @brief Create and destroy sockets to set current configuration */
81 void reset_sockets(ev_source *ev) {
83 struct addrinfo *res, *r;
84 struct listener *l, **ll;
85 struct sockaddr_un sun;
88 new_unix = config_get_file("socket");
89 if(!current_unix || strcmp(current_unix, new_unix)) {
90 /* either there was no socket, or there was but a different path */
92 /* stop the old one and remove it from the filesystem */
93 server_stop(ev, current_unix_fd);
94 if(unlink(current_unix) < 0)
95 disorder_fatal(errno, "unlink %s", current_unix);
97 /* start the new one */
98 if(strlen(new_unix) >= sizeof sun.sun_path)
99 disorder_fatal(0, "socket path %s is too long", new_unix);
100 memset(&sun, 0, sizeof sun);
101 sun.sun_family = AF_UNIX;
102 strcpy(sun.sun_path, new_unix);
103 if(unlink(new_unix) < 0 && errno != ENOENT)
104 disorder_fatal(errno, "unlink %s", new_unix);
105 if((current_unix_fd = server_start(ev, PF_UNIX, sizeof sun,
106 (const struct sockaddr *)&sun,
108 current_unix = new_unix;
109 if(chmod(new_unix, 0777) < 0)
110 disorder_fatal(errno, "error calling chmod %s", new_unix);
115 /* get the new listen config */
116 if(config->listen.af != -1)
117 res = netaddress_resolve(&config->listen, 1, IPPROTO_TCP);
121 /* Close any current listeners that aren't required any more */
124 for(r = res; r; r = r->ai_next)
125 if(!sockaddrcmp(r->ai_addr, l->sa))
128 /* Didn't find a match, remove this one */
129 server_stop(ev, l->fd);
132 /* This address is still wanted */
137 /* Open any new listeners that are required */
138 for(r = res; r; r = r->ai_next) {
139 for(l = listeners; l; l = l->next)
140 if(!sockaddrcmp(r->ai_addr, l->sa))
143 /* Didn't find a match, need a new listener */
144 int fd = server_start(ev, r->ai_family, r->ai_addrlen, r->ai_addr,
145 format_sockaddr(r->ai_addr));
147 l = xmalloc(sizeof *l);
149 l->sa = copy_sockaddr(r);
153 /* We ignore any failures (though server_start() will have
157 /* if res is still set it needs freeing */
162 /** @brief Reconfigure the server
163 * @param ev Event loop
165 * @return As config_read(); 0 on success, -1 if could not (re-)read config
167 int reconfigure(ev_source *ev, unsigned flags) {
168 int need_another_rescan = 0;
171 D(("reconfigure(%x)", flags));
172 /* Deconfigure the old audio API if there is one */
178 if(flags & RECONFIGURE_RELOADING) {
179 /* If there's a rescan in progress, cancel it but remember to start a fresh
180 * one after the reload. */
181 need_another_rescan = trackdb_rescan_cancel();
182 /* (Re-)read the configuration */
183 if(config_read(1/*server*/, config))
186 /* Tell the speaker it needs to reload its config too. */
188 disorder_info("%s: installed new configuration", configfile);
192 api = uaudio_find(config->api);
197 /* If we interrupted a rescan of all the tracks, start a new one */
198 if(need_another_rescan)
199 trackdb_rescan(ev, 1/*check*/, 0, 0);
200 if(!ret && !(flags & RECONFIGURE_FIRST)) {
201 /* Open/close sockets */