/*
* This file is part of DisOrder.
- * Copyright (C) 2004, 2005 Richard Kettlewell
+ * Copyright (C) 2004, 2005, 2007-2009, 2012 Richard Kettlewell
*
- * This program is free software; you can redistribute it and/or modify
+ * 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
+ * the Free Software Foundation, either version 3 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.
- *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- * USA
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+/** @file server/state.c
+ * @brief Global server state
*/
+#include "disorder-server.h"
+
+/** @brief A unix domain socket */
+struct unix_socket {
+ const char *path;
+ int fd;
+};
+
+struct unix_socket main_socket[1], priv_socket[1];
+
+/** @brief TCP listener definition */
+struct listener {
+ /** @brief Next listener */
+ struct listener *next;
+
+ /** @brief Local socket address */
+ struct sockaddr *sa;
-#include <config.h>
-
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <locale.h>
-#include <stdio.h>
-#include <pcre.h>
-#include <netdb.h>
-#include <sys/un.h>
-#include <netinet/in.h>
-
-#include "event.h"
-#include "play.h"
-#include "trackdb.h"
-#include "state.h"
-#include "configuration.h"
-#include "log.h"
-#include "queue.h"
-#include "server-queue.h"
-#include "server.h"
-#include "printf.h"
-#include "addr.h"
-
-static const char *current_unix;
-static int current_unix_fd;
-
-static struct addrinfo *current_listen_addrinfo;
-static int current_listen_fd;
+ /** @brief File descriptor */
+ int fd;
+};
+/** @brief Current listeners */
+static struct listener *listeners;
+
+/** @brief Current audio API */
+const struct uaudio *api;
+
+/** @brief Quit DisOrder */
void quit(ev_source *ev) {
+ disorder_info("shutting down...");
quitting(ev);
trackdb_close();
- trackdb_deinit();
- info("terminating");
- _exit(0);
+ trackdb_deinit(ev);
+ /* Shutdown subprocesses.
+ *
+ * Subprocesses that use ev_child:
+ * - the speaker
+ * - the current rescan
+ * - any decoders
+ * - ...and players
+ * - the track picker
+ * - mail sender
+ * - the deadlock manager
+ *
+ * Subprocesses that don't:
+ * - any normalizers
+ * These are not shut down currently.
+ */
+ ev_child_killall(ev);
+ disorder_info("exiting");
+ exit(0);
}
-static void reset_socket(ev_source *ev) {
- const char *new_unix;
- struct addrinfo *res;
- struct sockaddr_un sun;
- char *name;
-
- static const struct addrinfo pref = {
- AI_PASSIVE,
- PF_INET,
- SOCK_STREAM,
- IPPROTO_TCP,
- 0,
- 0,
- 0,
- 0
- };
+/** @brief Create a copy of an @c addrinfo structure */
+static struct sockaddr *copy_sockaddr(const struct resolved *raddr) {
+ struct sockaddr *sa = xmalloc_noptr(raddr->len);
+ memcpy(sa, raddr->sa, raddr->len);
+ return sa;
+}
- /* unix first */
- new_unix = config_get_file("socket");
- if(!current_unix || strcmp(current_unix, new_unix)) {
+static void reset_unix_socket(ev_source *ev,
+ struct unix_socket *s,
+ const char *new_path,
+ int privileged) {
+ struct sockaddr_un sun;
+ if(!s->path || strcmp(s->path, new_path)) {
/* either there was no socket, or there was but a different path */
- if(current_unix) {
+ if(s->path) {
/* stop the old one and remove it from the filesystem */
- server_stop(ev, current_unix_fd);
- if(unlink(current_unix) < 0)
- fatal(errno, "unlink %s", current_unix);
+ server_stop(ev, s->fd);
+ if(unlink(s->path) < 0)
+ disorder_fatal(errno, "unlink %s", s->path);
}
/* start the new one */
- if(strlen(new_unix) >= sizeof sun.sun_path)
- fatal(0, "socket path %s is too long", new_unix);
+ if(strlen(new_path) >= sizeof sun.sun_path)
+ disorder_fatal(0, "socket path %s is too long", new_path);
memset(&sun, 0, sizeof sun);
sun.sun_family = AF_UNIX;
- strcpy(sun.sun_path, new_unix);
- if(unlink(new_unix) < 0 && errno != ENOENT)
- fatal(errno, "unlink %s", new_unix);
- if((current_unix_fd = server_start(ev, PF_UNIX, sizeof sun,
- (const struct sockaddr *)&sun,
- new_unix)) >= 0) {
- current_unix = new_unix;
- if(chmod(new_unix, 0777) < 0)
- fatal(errno, "error calling chmod %s", new_unix);
+ strcpy(sun.sun_path, new_path);
+ if(unlink(new_path) < 0 && errno != ENOENT)
+ disorder_fatal(errno, "unlink %s", new_path);
+ if((s->fd = server_start(ev, PF_UNIX, sizeof sun,
+ (const struct sockaddr *)&sun,
+ new_path,
+ privileged)) >= 0) {
+ s->path = new_path;
+ if(chmod(new_path, 0777) < 0) /* TODO */
+ disorder_fatal(errno, "error calling chmod %s", new_path);
} else
- current_unix = 0;
+ s->path = 0;
}
+}
+
+/** @brief Create and destroy sockets to set current configuration */
+void reset_sockets(ev_source *ev) {
+ struct resolved *res;
+ size_t i, nres;
+ struct listener *l, **ll;
+ const char *private_dir = config_get_file("private");
+
+ /* create the private socket directory */
+ unlink(private_dir);
+ if(mkdir(private_dir, 0700) < 0 && errno != EEXIST)
+ disorder_fatal(errno, "error creating %s", private_dir);
+
+ /* unix first */
+ reset_unix_socket(ev, main_socket, config_get_file("socket"), 0);
+ reset_unix_socket(ev, priv_socket, config_get_file("private/socket"), 1);
/* get the new listen config */
- if(config->listen.n)
- res = get_address(&config->listen, &pref, &name);
- else
- res = 0;
-
- if((res && !current_listen_addrinfo)
- || (current_listen_addrinfo
- && (!res
- || addrinfocmp(res, current_listen_addrinfo)))) {
- /* something has to change */
- if(current_listen_addrinfo) {
- /* delete the old listener */
- server_stop(ev, current_listen_fd);
- freeaddrinfo(current_listen_addrinfo);
- current_listen_addrinfo = 0;
+ res = 0; nres = 0;
+ if(config->listen.af != -1)
+ netaddress_resolve(&config->listen, 1, SOCK_STREAM, &res, &nres);
+
+ /* Close any current listeners that aren't required any more */
+ ll = &listeners;
+ while((l = *ll)) {
+ for(i = 0; i < nres; i++)
+ if(!sockaddrcmp(res[i].sa, l->sa))
+ break;
+ if(i >= nres) {
+ /* Didn't find a match, remove this one */
+ server_stop(ev, l->fd);
+ *ll = l->next;
+ } else {
+ /* This address is still wanted */
+ ll = &l->next;
}
- if(res) {
- /* start the new listener */
- if((current_listen_fd = server_start(ev, res->ai_family, res->ai_addrlen,
- res->ai_addr, name)) >= 0) {
- current_listen_addrinfo = res;
- res = 0;
+ }
+
+ /* Open any new listeners that are required */
+ for(i = 0; i < nres; i++) {
+ for(l = listeners; l; l = l->next)
+ if(!sockaddrcmp(res[i].sa, l->sa))
+ break;
+ if(!l) {
+ /* Didn't find a match, need a new listener */
+ int fd = server_start(ev, res[i].sa->sa_family, res[i].len, res[i].sa,
+ format_sockaddr(res[i].sa), 0);
+ if(fd >= 0) {
+ l = xmalloc(sizeof *l);
+ l->next = listeners;
+ l->sa = copy_sockaddr(&res[i]);
+ l->fd = fd;
+ listeners = l;
}
+ /* We ignore any failures (though server_start() will have
+ * logged them). */
}
}
/* if res is still set it needs freeing */
if(res)
- freeaddrinfo(res);
+ netaddress_free_resolved(res, nres);
}
-int reconfigure(ev_source *ev, int reload) {
+/** @brief Reconfigure the server
+ * @param ev Event loop
+ * @param flags Flags
+ * @return As config_read(); 0 on success, -1 if could not (re-)read config
+ */
+int reconfigure(ev_source *ev, unsigned flags) {
int need_another_rescan = 0;
int ret = 0;
- D(("reconfigure(%d)", reload));
- if(reload) {
+ D(("reconfigure(%x)", flags));
+ /* Deconfigure the old audio API if there is one */
+ if(api) {
+ if(api->close_mixer)
+ api->close_mixer();
+ api = NULL;
+ }
+ if(flags & RECONFIGURE_RELOADING) {
+ /* If there's a rescan in progress, cancel it but remember to start a fresh
+ * one after the reload. */
need_another_rescan = trackdb_rescan_cancel();
- trackdb_close();
- if(config_read(1))
+ /* (Re-)read the configuration */
+ if(config_read(1/*server*/, config))
ret = -1;
else {
/* Tell the speaker it needs to reload its config too. */
speaker_reload();
- info("%s: installed new configuration", configfile);
+ disorder_info("%s: installed new configuration", configfile);
}
}
- trackdb_open(0);
+ /* New audio API */
+ api = uaudio_find(config->api);
+ if(api->configure)
+ api->configure();
+ if(api->open_mixer)
+ api->open_mixer();
+ /* If we interrupted a rescan of all the tracks, start a new one */
if(need_another_rescan)
- trackdb_rescan(ev);
- if(!ret) {
- queue_read();
- recent_read();
- reset_socket(ev);
+ trackdb_rescan(ev, 1/*check*/, 0, 0);
+ if(!ret && !(flags & RECONFIGURE_FIRST)) {
+ /* Open/close sockets */
+ reset_sockets(ev);
}
return ret;
}
Local Variables:
c-basic-offset:2
comment-column:40
+fill-column:79
+indent-tabs-mode:nil
End:
*/
~mdw / disorder / blobdiff