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[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
05b75f8d 21#include "disorder-server.h"
460b9539 22
23static const char *current_unix;
24static int current_unix_fd;
25
26static struct addrinfo *current_listen_addrinfo;
27static int current_listen_fd;
28
29void quit(ev_source *ev) {
4363757e 30 info("shutting down...");
460b9539 31 quitting(ev);
32 trackdb_close();
33 trackdb_deinit();
4363757e 34 info("exiting");
445a0f66 35 exit(0);
460b9539 36}
37
38static void reset_socket(ev_source *ev) {
39 const char *new_unix;
40 struct addrinfo *res;
41 struct sockaddr_un sun;
42 char *name;
43
44 static const struct addrinfo pref = {
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45 .ai_flags = AI_PASSIVE,
46 .ai_family = PF_INET,
47 .ai_socktype = SOCK_STREAM,
48 .ai_protocol = IPPROTO_TCP,
460b9539 49 };
50
51 /* unix first */
52 new_unix = config_get_file("socket");
53 if(!current_unix || strcmp(current_unix, new_unix)) {
54 /* either there was no socket, or there was but a different path */
55 if(current_unix) {
56 /* stop the old one and remove it from the filesystem */
57 server_stop(ev, current_unix_fd);
58 if(unlink(current_unix) < 0)
59 fatal(errno, "unlink %s", current_unix);
60 }
61 /* start the new one */
62 if(strlen(new_unix) >= sizeof sun.sun_path)
63 fatal(0, "socket path %s is too long", new_unix);
64 memset(&sun, 0, sizeof sun);
65 sun.sun_family = AF_UNIX;
66 strcpy(sun.sun_path, new_unix);
67 if(unlink(new_unix) < 0 && errno != ENOENT)
68 fatal(errno, "unlink %s", new_unix);
69 if((current_unix_fd = server_start(ev, PF_UNIX, sizeof sun,
70 (const struct sockaddr *)&sun,
71 new_unix)) >= 0) {
72 current_unix = new_unix;
73 if(chmod(new_unix, 0777) < 0)
74 fatal(errno, "error calling chmod %s", new_unix);
75 } else
76 current_unix = 0;
77 }
78
79 /* get the new listen config */
80 if(config->listen.n)
81 res = get_address(&config->listen, &pref, &name);
82 else
83 res = 0;
84
85 if((res && !current_listen_addrinfo)
86 || (current_listen_addrinfo
87 && (!res
88 || addrinfocmp(res, current_listen_addrinfo)))) {
89 /* something has to change */
90 if(current_listen_addrinfo) {
91 /* delete the old listener */
92 server_stop(ev, current_listen_fd);
93 freeaddrinfo(current_listen_addrinfo);
94 current_listen_addrinfo = 0;
95 }
96 if(res) {
97 /* start the new listener */
98 if((current_listen_fd = server_start(ev, res->ai_family, res->ai_addrlen,
99 res->ai_addr, name)) >= 0) {
100 current_listen_addrinfo = res;
101 res = 0;
102 }
103 }
104 }
105 /* if res is still set it needs freeing */
106 if(res)
107 freeaddrinfo(res);
108}
109
110int reconfigure(ev_source *ev, int reload) {
111 int need_another_rescan = 0;
112 int ret = 0;
113
114 D(("reconfigure(%d)", reload));
115 if(reload) {
116 need_another_rescan = trackdb_rescan_cancel();
117 trackdb_close();
c00fce3a 118 if(config_read(1))
460b9539 119 ret = -1;
120 else {
121 /* Tell the speaker it needs to reload its config too. */
122 speaker_reload();
123 info("%s: installed new configuration", configfile);
124 }
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125 trackdb_open(TRACKDB_NO_UPGRADE);
126 } else
127 /* We only allow for upgrade at startup */
128 trackdb_open(TRACKDB_CAN_UPGRADE);
460b9539 129 if(need_another_rescan)
dd9af5cb 130 trackdb_rescan(ev, 1/*check*/, 0, 0);
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131 /* Arrange timeouts for schedule actions */
132 schedule_init(ev);
460b9539 133 if(!ret) {
134 queue_read();
135 recent_read();
136 reset_socket(ev);
137 }
138 return ret;
139}
140
141/*
142Local Variables:
143c-basic-offset:2
144comment-column:40
145End:
146*/