chiark / gitweb /
redirect()
[disorder] / server / state.c
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460b9539 1/*
2 * This file is part of DisOrder.
5aff007d 3 * Copyright (C) 2004, 2005, 2007, 2008 Richard Kettlewell
460b9539 4 *
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 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
18 * USA
19 */
20
21#include <config.h>
22
23#include <stdlib.h>
24#include <string.h>
25#include <errno.h>
26#include <sys/types.h>
27#include <sys/socket.h>
28#include <sys/stat.h>
29#include <unistd.h>
30#include <locale.h>
31#include <stdio.h>
32#include <pcre.h>
33#include <netdb.h>
34#include <sys/un.h>
35#include <netinet/in.h>
36
37#include "event.h"
38#include "play.h"
5df73aeb 39#include "rights.h"
460b9539 40#include "trackdb.h"
41#include "state.h"
42#include "configuration.h"
43#include "log.h"
44#include "queue.h"
f08c0859 45#include "server-queue.h"
460b9539 46#include "server.h"
47#include "printf.h"
48#include "addr.h"
49
50static const char *current_unix;
51static int current_unix_fd;
52
53static struct addrinfo *current_listen_addrinfo;
54static int current_listen_fd;
55
56void quit(ev_source *ev) {
4363757e 57 info("shutting down...");
460b9539 58 quitting(ev);
59 trackdb_close();
60 trackdb_deinit();
4363757e 61 info("exiting");
445a0f66 62 exit(0);
460b9539 63}
64
65static void reset_socket(ev_source *ev) {
66 const char *new_unix;
67 struct addrinfo *res;
68 struct sockaddr_un sun;
69 char *name;
70
71 static const struct addrinfo pref = {
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72 .ai_flags = AI_PASSIVE,
73 .ai_family = PF_INET,
74 .ai_socktype = SOCK_STREAM,
75 .ai_protocol = IPPROTO_TCP,
460b9539 76 };
77
78 /* unix first */
79 new_unix = config_get_file("socket");
80 if(!current_unix || strcmp(current_unix, new_unix)) {
81 /* either there was no socket, or there was but a different path */
82 if(current_unix) {
83 /* stop the old one and remove it from the filesystem */
84 server_stop(ev, current_unix_fd);
85 if(unlink(current_unix) < 0)
86 fatal(errno, "unlink %s", current_unix);
87 }
88 /* start the new one */
89 if(strlen(new_unix) >= sizeof sun.sun_path)
90 fatal(0, "socket path %s is too long", new_unix);
91 memset(&sun, 0, sizeof sun);
92 sun.sun_family = AF_UNIX;
93 strcpy(sun.sun_path, new_unix);
94 if(unlink(new_unix) < 0 && errno != ENOENT)
95 fatal(errno, "unlink %s", new_unix);
96 if((current_unix_fd = server_start(ev, PF_UNIX, sizeof sun,
97 (const struct sockaddr *)&sun,
98 new_unix)) >= 0) {
99 current_unix = new_unix;
100 if(chmod(new_unix, 0777) < 0)
101 fatal(errno, "error calling chmod %s", new_unix);
102 } else
103 current_unix = 0;
104 }
105
106 /* get the new listen config */
107 if(config->listen.n)
108 res = get_address(&config->listen, &pref, &name);
109 else
110 res = 0;
111
112 if((res && !current_listen_addrinfo)
113 || (current_listen_addrinfo
114 && (!res
115 || addrinfocmp(res, current_listen_addrinfo)))) {
116 /* something has to change */
117 if(current_listen_addrinfo) {
118 /* delete the old listener */
119 server_stop(ev, current_listen_fd);
120 freeaddrinfo(current_listen_addrinfo);
121 current_listen_addrinfo = 0;
122 }
123 if(res) {
124 /* start the new listener */
125 if((current_listen_fd = server_start(ev, res->ai_family, res->ai_addrlen,
126 res->ai_addr, name)) >= 0) {
127 current_listen_addrinfo = res;
128 res = 0;
129 }
130 }
131 }
132 /* if res is still set it needs freeing */
133 if(res)
134 freeaddrinfo(res);
135}
136
137int reconfigure(ev_source *ev, int reload) {
138 int need_another_rescan = 0;
139 int ret = 0;
140
141 D(("reconfigure(%d)", reload));
142 if(reload) {
143 need_another_rescan = trackdb_rescan_cancel();
144 trackdb_close();
c00fce3a 145 if(config_read(1))
460b9539 146 ret = -1;
147 else {
148 /* Tell the speaker it needs to reload its config too. */
149 speaker_reload();
150 info("%s: installed new configuration", configfile);
151 }
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152 trackdb_open(TRACKDB_NO_UPGRADE);
153 } else
154 /* We only allow for upgrade at startup */
155 trackdb_open(TRACKDB_CAN_UPGRADE);
460b9539 156 if(need_another_rescan)
ffac51d7 157 trackdb_rescan(ev, 1/*check*/);
460b9539 158 if(!ret) {
159 queue_read();
160 recent_read();
161 reset_socket(ev);
162 }
163 return ret;
164}
165
166/*
167Local Variables:
168c-basic-offset:2
169comment-column:40
170End:
171*/