2 * This file is part of DisOrder.
3 * Copyright (C) 2004, 2005, 2007-2009, 2012 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 A unix domain socket */
29 struct unix_socket main_socket[1], priv_socket[1];
31 /** @brief TCP listener definition */
33 /** @brief Next listener */
34 struct listener *next;
36 /** @brief Local socket address */
39 /** @brief File descriptor */
43 /** @brief Current listeners */
44 static struct listener *listeners;
46 /** @brief Current audio API */
47 const struct uaudio *api;
49 /** @brief Quit DisOrder */
50 void quit(ev_source *ev) {
51 disorder_info("shutting down...");
55 /* Shutdown subprocesses.
57 * Subprocesses that use ev_child:
59 * - the current rescan
64 * - the deadlock manager
66 * Subprocesses that don't:
68 * These are not shut down currently.
71 disorder_info("exiting");
75 /** @brief Create a copy of an @c addrinfo structure */
76 static struct sockaddr *copy_sockaddr(const struct addrinfo *addr) {
77 struct sockaddr *sa = xmalloc_noptr(addr->ai_addrlen);
78 memcpy(sa, addr->ai_addr, addr->ai_addrlen);
82 static void reset_unix_socket(ev_source *ev,
83 struct unix_socket *s,
86 struct sockaddr_un sun;
87 if(!s->path || strcmp(s->path, new_path)) {
88 /* either there was no socket, or there was but a different path */
90 /* stop the old one and remove it from the filesystem */
91 server_stop(ev, s->fd);
92 if(unlink(s->path) < 0)
93 disorder_fatal(errno, "unlink %s", s->path);
95 /* start the new one */
96 if(strlen(new_path) >= sizeof sun.sun_path)
97 disorder_fatal(0, "socket path %s is too long", new_path);
98 memset(&sun, 0, sizeof sun);
99 sun.sun_family = AF_UNIX;
100 strcpy(sun.sun_path, new_path);
101 if(unlink(new_path) < 0 && errno != ENOENT)
102 disorder_fatal(errno, "unlink %s", new_path);
103 if((s->fd = server_start(ev, PF_UNIX, sizeof sun,
104 (const struct sockaddr *)&sun,
108 if(chmod(new_path, 0777) < 0) /* TODO */
109 disorder_fatal(errno, "error calling chmod %s", new_path);
115 /** @brief Create and destroy sockets to set current configuration */
116 void reset_sockets(ev_source *ev) {
117 struct addrinfo *res, *r;
118 struct listener *l, **ll;
119 const char *private_dir = config_get_file("private");
121 /* create the private socket directory */
123 if(mkdir(private_dir, 0700) < 0 && errno != EEXIST)
124 disorder_fatal(errno, "error creating %s", private_dir);
127 reset_unix_socket(ev, main_socket, config_get_file("socket"), 0);
128 reset_unix_socket(ev, priv_socket, config_get_file("private/socket"), 1);
130 /* get the new listen config */
131 if(config->listen.af != -1)
132 res = netaddress_resolve(&config->listen, 1, IPPROTO_TCP);
136 /* Close any current listeners that aren't required any more */
139 for(r = res; r; r = r->ai_next)
140 if(!sockaddrcmp(r->ai_addr, l->sa))
143 /* Didn't find a match, remove this one */
144 server_stop(ev, l->fd);
147 /* This address is still wanted */
152 /* Open any new listeners that are required */
153 for(r = res; r; r = r->ai_next) {
154 for(l = listeners; l; l = l->next)
155 if(!sockaddrcmp(r->ai_addr, l->sa))
158 /* Didn't find a match, need a new listener */
159 int fd = server_start(ev, r->ai_family, r->ai_addrlen, r->ai_addr,
160 format_sockaddr(r->ai_addr), 0);
162 l = xmalloc(sizeof *l);
164 l->sa = copy_sockaddr(r);
168 /* We ignore any failures (though server_start() will have
172 /* if res is still set it needs freeing */
177 /** @brief Reconfigure the server
178 * @param ev Event loop
180 * @return As config_read(); 0 on success, -1 if could not (re-)read config
182 int reconfigure(ev_source *ev, unsigned flags) {
183 int need_another_rescan = 0;
186 D(("reconfigure(%x)", flags));
187 /* Deconfigure the old audio API if there is one */
193 if(flags & RECONFIGURE_RELOADING) {
194 /* If there's a rescan in progress, cancel it but remember to start a fresh
195 * one after the reload. */
196 need_another_rescan = trackdb_rescan_cancel();
197 /* (Re-)read the configuration */
198 if(config_read(1/*server*/, config))
201 /* Tell the speaker it needs to reload its config too. */
203 disorder_info("%s: installed new configuration", configfile);
207 api = uaudio_find(config->api);
212 /* If we interrupted a rescan of all the tracks, start a new one */
213 if(need_another_rescan)
214 trackdb_rescan(ev, 1/*check*/, 0, 0);
215 if(!ret && !(flags & RECONFIGURE_FIRST)) {
216 /* Open/close sockets */