Commit | Line | Data |
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460b9539 | 1 | /* |
2 | * This file is part of DisOrder. | |
8a886602 | 3 | * Copyright (C) 2004, 2005, 2007-2009, 2012 Richard Kettlewell |
460b9539 | 4 | * |
e7eb3a27 | 5 | * This program is free software: you can redistribute it and/or modify |
460b9539 | 6 | * it under the terms of the GNU General Public License as published by |
e7eb3a27 | 7 | * the Free Software Foundation, either version 3 of the License, or |
460b9539 | 8 | * (at your option) any later version. |
9 | * | |
e7eb3a27 RK |
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. | |
14 | * | |
460b9539 | 15 | * You should have received a copy of the GNU General Public License |
e7eb3a27 | 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
460b9539 | 17 | */ |
132a5a4a RK |
18 | /** @file server/state.c |
19 | * @brief Global server state | |
20 | */ | |
05b75f8d | 21 | #include "disorder-server.h" |
460b9539 | 22 | |
de37b640 RK |
23 | /** @brief A unix domain socket */ |
24 | struct unix_socket { | |
25 | const char *path; | |
26 | int fd; | |
27 | }; | |
e04f4cb5 | 28 | |
de37b640 | 29 | struct unix_socket main_socket[1], priv_socket[1]; |
460b9539 | 30 | |
80dc2c5f RK |
31 | /** @brief TCP listener definition */ |
32 | struct listener { | |
e04f4cb5 | 33 | /** @brief Next listener */ |
80dc2c5f | 34 | struct listener *next; |
e04f4cb5 RK |
35 | |
36 | /** @brief Local socket address */ | |
80dc2c5f | 37 | struct sockaddr *sa; |
e04f4cb5 RK |
38 | |
39 | /** @brief File descriptor */ | |
80dc2c5f RK |
40 | int fd; |
41 | }; | |
42 | ||
43 | /** @brief Current listeners */ | |
44 | static struct listener *listeners; | |
460b9539 | 45 | |
b50cfb8a RK |
46 | /** @brief Current audio API */ |
47 | const struct uaudio *api; | |
48 | ||
e04f4cb5 | 49 | /** @brief Quit DisOrder */ |
460b9539 | 50 | void quit(ev_source *ev) { |
2e9ba080 | 51 | disorder_info("shutting down..."); |
460b9539 | 52 | quitting(ev); |
53 | trackdb_close(); | |
8cd7d4bc | 54 | trackdb_deinit(ev); |
18ed984a RK |
55 | /* Shutdown subprocesses. |
56 | * | |
57 | * Subprocesses that use ev_child: | |
58 | * - the speaker | |
59 | * - the current rescan | |
60 | * - any decoders | |
61 | * - ...and players | |
62 | * - the track picker | |
63 | * - mail sender | |
64 | * - the deadlock manager | |
65 | * | |
66 | * Subprocesses that don't: | |
67 | * - any normalizers | |
68 | * These are not shut down currently. | |
69 | */ | |
70 | ev_child_killall(ev); | |
2e9ba080 | 71 | disorder_info("exiting"); |
445a0f66 | 72 | exit(0); |
460b9539 | 73 | } |
74 | ||
e04f4cb5 | 75 | /** @brief Create a copy of an @c addrinfo structure */ |
80dc2c5f RK |
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); | |
79 | return sa; | |
80 | } | |
81 | ||
de37b640 RK |
82 | static void reset_unix_socket(ev_source *ev, |
83 | struct unix_socket *s, | |
84 | const char *new_path, | |
85 | int privileged) { | |
460b9539 | 86 | struct sockaddr_un sun; |
de37b640 | 87 | if(!s->path || strcmp(s->path, new_path)) { |
460b9539 | 88 | /* either there was no socket, or there was but a different path */ |
de37b640 | 89 | if(s->path) { |
460b9539 | 90 | /* stop the old one and remove it from the filesystem */ |
de37b640 RK |
91 | server_stop(ev, s->fd); |
92 | if(unlink(s->path) < 0) | |
93 | disorder_fatal(errno, "unlink %s", s->path); | |
460b9539 | 94 | } |
95 | /* start the new one */ | |
de37b640 RK |
96 | if(strlen(new_path) >= sizeof sun.sun_path) |
97 | disorder_fatal(0, "socket path %s is too long", new_path); | |
460b9539 | 98 | memset(&sun, 0, sizeof sun); |
99 | sun.sun_family = AF_UNIX; | |
de37b640 RK |
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, | |
105 | new_path, | |
106 | privileged)) >= 0) { | |
107 | s->path = new_path; | |
108 | if(chmod(new_path, 0777) < 0) /* TODO */ | |
109 | disorder_fatal(errno, "error calling chmod %s", new_path); | |
460b9539 | 110 | } else |
de37b640 | 111 | s->path = 0; |
460b9539 | 112 | } |
de37b640 RK |
113 | } |
114 | ||
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"); | |
120 | ||
121 | /* create the private socket directory */ | |
122 | unlink(private_dir); | |
123 | if(mkdir(private_dir, 0700) < 0 && errno != EEXIST) | |
124 | disorder_fatal(errno, "error creating %s", private_dir); | |
125 | ||
126 | /* unix first */ | |
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); | |
460b9539 | 129 | |
130 | /* get the new listen config */ | |
80dc2c5f RK |
131 | if(config->listen.af != -1) |
132 | res = netaddress_resolve(&config->listen, 1, IPPROTO_TCP); | |
460b9539 | 133 | else |
134 | res = 0; | |
135 | ||
80dc2c5f RK |
136 | /* Close any current listeners that aren't required any more */ |
137 | ll = &listeners; | |
138 | while((l = *ll)) { | |
139 | for(r = res; r; r = r->ai_next) | |
140 | if(!sockaddrcmp(r->ai_addr, l->sa)) | |
141 | break; | |
142 | if(!r) { | |
143 | /* Didn't find a match, remove this one */ | |
144 | server_stop(ev, l->fd); | |
145 | *ll = l->next; | |
146 | } else { | |
147 | /* This address is still wanted */ | |
148 | ll = &l->next; | |
460b9539 | 149 | } |
80dc2c5f RK |
150 | } |
151 | ||
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)) | |
156 | break; | |
157 | if(!l) { | |
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, | |
de37b640 | 160 | format_sockaddr(r->ai_addr), 0); |
80dc2c5f RK |
161 | if(fd >= 0) { |
162 | l = xmalloc(sizeof *l); | |
163 | l->next = listeners; | |
164 | l->sa = copy_sockaddr(r); | |
165 | l->fd = fd; | |
166 | listeners = l; | |
460b9539 | 167 | } |
e04f4cb5 RK |
168 | /* We ignore any failures (though server_start() will have |
169 | * logged them). */ | |
460b9539 | 170 | } |
171 | } | |
172 | /* if res is still set it needs freeing */ | |
173 | if(res) | |
174 | freeaddrinfo(res); | |
175 | } | |
176 | ||
e04f4cb5 | 177 | /** @brief Reconfigure the server |
c0f52b2c | 178 | * @param ev Event loop |
37f29ce9 RK |
179 | * @param flags Flags |
180 | * @return As config_read(); 0 on success, -1 if could not (re-)read config | |
e04f4cb5 | 181 | */ |
37f29ce9 | 182 | int reconfigure(ev_source *ev, unsigned flags) { |
460b9539 | 183 | int need_another_rescan = 0; |
184 | int ret = 0; | |
185 | ||
37f29ce9 | 186 | D(("reconfigure(%x)", flags)); |
e04f4cb5 | 187 | /* Deconfigure the old audio API if there is one */ |
b50cfb8a RK |
188 | if(api) { |
189 | if(api->close_mixer) | |
190 | api->close_mixer(); | |
191 | api = NULL; | |
192 | } | |
37f29ce9 | 193 | if(flags & RECONFIGURE_RELOADING) { |
e04f4cb5 | 194 | /* If there's a rescan in progress, cancel it but remember to start a fresh |
36c5e137 | 195 | * one after the reload. */ |
460b9539 | 196 | need_another_rescan = trackdb_rescan_cancel(); |
e04f4cb5 | 197 | /* (Re-)read the configuration */ |
02ba7921 | 198 | if(config_read(1/*server*/, config)) |
460b9539 | 199 | ret = -1; |
200 | else { | |
201 | /* Tell the speaker it needs to reload its config too. */ | |
202 | speaker_reload(); | |
2e9ba080 | 203 | disorder_info("%s: installed new configuration", configfile); |
460b9539 | 204 | } |
36c5e137 | 205 | } |
e04f4cb5 | 206 | /* New audio API */ |
b50cfb8a | 207 | api = uaudio_find(config->api); |
ba70caca RK |
208 | if(api->configure) |
209 | api->configure(); | |
b50cfb8a RK |
210 | if(api->open_mixer) |
211 | api->open_mixer(); | |
e04f4cb5 | 212 | /* If we interrupted a rescan of all the tracks, start a new one */ |
460b9539 | 213 | if(need_another_rescan) |
dd9af5cb | 214 | trackdb_rescan(ev, 1/*check*/, 0, 0); |
37f29ce9 RK |
215 | if(!ret && !(flags & RECONFIGURE_FIRST)) { |
216 | /* Open/close sockets */ | |
217 | reset_sockets(ev); | |
460b9539 | 218 | } |
219 | return ret; | |
220 | } | |
221 | ||
222 | /* | |
223 | Local Variables: | |
224 | c-basic-offset:2 | |
225 | comment-column:40 | |
e04f4cb5 RK |
226 | fill-column:79 |
227 | indent-tabs-mode:nil | |
460b9539 | 228 | End: |
229 | */ |