Commit | Line | Data |
---|---|---|
460b9539 | 1 | /* |
2 | * This file is part of DisOrder. | |
b50cfb8a | 3 | * Copyright (C) 2004, 2005, 2007-2009 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 | |
e04f4cb5 | 23 | /** @brief Current AF_UNIX socket path */ |
460b9539 | 24 | static const char *current_unix; |
e04f4cb5 RK |
25 | |
26 | /** @brief Current AF_UNIX socket */ | |
460b9539 | 27 | static int current_unix_fd; |
28 | ||
80dc2c5f RK |
29 | /** @brief TCP listener definition */ |
30 | struct listener { | |
e04f4cb5 | 31 | /** @brief Next listener */ |
80dc2c5f | 32 | struct listener *next; |
e04f4cb5 RK |
33 | |
34 | /** @brief Local socket address */ | |
80dc2c5f | 35 | struct sockaddr *sa; |
e04f4cb5 RK |
36 | |
37 | /** @brief File descriptor */ | |
80dc2c5f RK |
38 | int fd; |
39 | }; | |
40 | ||
41 | /** @brief Current listeners */ | |
42 | static struct listener *listeners; | |
460b9539 | 43 | |
b50cfb8a RK |
44 | /** @brief Current audio API */ |
45 | const struct uaudio *api; | |
46 | ||
e04f4cb5 | 47 | /** @brief Quit DisOrder */ |
460b9539 | 48 | void quit(ev_source *ev) { |
2e9ba080 | 49 | disorder_info("shutting down..."); |
460b9539 | 50 | quitting(ev); |
51 | trackdb_close(); | |
8cd7d4bc | 52 | trackdb_deinit(ev); |
18ed984a RK |
53 | /* Shutdown subprocesses. |
54 | * | |
55 | * Subprocesses that use ev_child: | |
56 | * - the speaker | |
57 | * - the current rescan | |
58 | * - any decoders | |
59 | * - ...and players | |
60 | * - the track picker | |
61 | * - mail sender | |
62 | * - the deadlock manager | |
63 | * | |
64 | * Subprocesses that don't: | |
65 | * - any normalizers | |
66 | * These are not shut down currently. | |
67 | */ | |
68 | ev_child_killall(ev); | |
2e9ba080 | 69 | disorder_info("exiting"); |
445a0f66 | 70 | exit(0); |
460b9539 | 71 | } |
72 | ||
e04f4cb5 | 73 | /** @brief Create a copy of an @c addrinfo structure */ |
80dc2c5f RK |
74 | static struct sockaddr *copy_sockaddr(const struct addrinfo *addr) { |
75 | struct sockaddr *sa = xmalloc_noptr(addr->ai_addrlen); | |
76 | memcpy(sa, addr->ai_addr, addr->ai_addrlen); | |
77 | return sa; | |
78 | } | |
79 | ||
e04f4cb5 | 80 | /** @brief Create and destroy sockets to set current configuration */ |
37f29ce9 | 81 | void reset_sockets(ev_source *ev) { |
460b9539 | 82 | const char *new_unix; |
80dc2c5f RK |
83 | struct addrinfo *res, *r; |
84 | struct listener *l, **ll; | |
460b9539 | 85 | struct sockaddr_un sun; |
460b9539 | 86 | |
87 | /* unix first */ | |
88 | new_unix = config_get_file("socket"); | |
89 | if(!current_unix || strcmp(current_unix, new_unix)) { | |
90 | /* either there was no socket, or there was but a different path */ | |
91 | if(current_unix) { | |
92 | /* stop the old one and remove it from the filesystem */ | |
93 | server_stop(ev, current_unix_fd); | |
94 | if(unlink(current_unix) < 0) | |
2e9ba080 | 95 | disorder_fatal(errno, "unlink %s", current_unix); |
460b9539 | 96 | } |
97 | /* start the new one */ | |
98 | if(strlen(new_unix) >= sizeof sun.sun_path) | |
2e9ba080 | 99 | disorder_fatal(0, "socket path %s is too long", new_unix); |
460b9539 | 100 | memset(&sun, 0, sizeof sun); |
101 | sun.sun_family = AF_UNIX; | |
102 | strcpy(sun.sun_path, new_unix); | |
103 | if(unlink(new_unix) < 0 && errno != ENOENT) | |
2e9ba080 | 104 | disorder_fatal(errno, "unlink %s", new_unix); |
460b9539 | 105 | if((current_unix_fd = server_start(ev, PF_UNIX, sizeof sun, |
106 | (const struct sockaddr *)&sun, | |
107 | new_unix)) >= 0) { | |
108 | current_unix = new_unix; | |
109 | if(chmod(new_unix, 0777) < 0) | |
2e9ba080 | 110 | disorder_fatal(errno, "error calling chmod %s", new_unix); |
460b9539 | 111 | } else |
112 | current_unix = 0; | |
113 | } | |
114 | ||
115 | /* get the new listen config */ | |
80dc2c5f RK |
116 | if(config->listen.af != -1) |
117 | res = netaddress_resolve(&config->listen, 1, IPPROTO_TCP); | |
460b9539 | 118 | else |
119 | res = 0; | |
120 | ||
80dc2c5f RK |
121 | /* Close any current listeners that aren't required any more */ |
122 | ll = &listeners; | |
123 | while((l = *ll)) { | |
124 | for(r = res; r; r = r->ai_next) | |
125 | if(!sockaddrcmp(r->ai_addr, l->sa)) | |
126 | break; | |
127 | if(!r) { | |
128 | /* Didn't find a match, remove this one */ | |
129 | server_stop(ev, l->fd); | |
130 | *ll = l->next; | |
131 | } else { | |
132 | /* This address is still wanted */ | |
133 | ll = &l->next; | |
460b9539 | 134 | } |
80dc2c5f RK |
135 | } |
136 | ||
137 | /* Open any new listeners that are required */ | |
138 | for(r = res; r; r = r->ai_next) { | |
139 | for(l = listeners; l; l = l->next) | |
140 | if(!sockaddrcmp(r->ai_addr, l->sa)) | |
141 | break; | |
142 | if(!l) { | |
143 | /* Didn't find a match, need a new listener */ | |
144 | int fd = server_start(ev, r->ai_family, r->ai_addrlen, r->ai_addr, | |
145 | format_sockaddr(r->ai_addr)); | |
146 | if(fd >= 0) { | |
147 | l = xmalloc(sizeof *l); | |
148 | l->next = listeners; | |
149 | l->sa = copy_sockaddr(r); | |
150 | l->fd = fd; | |
151 | listeners = l; | |
460b9539 | 152 | } |
e04f4cb5 RK |
153 | /* We ignore any failures (though server_start() will have |
154 | * logged them). */ | |
460b9539 | 155 | } |
156 | } | |
157 | /* if res is still set it needs freeing */ | |
158 | if(res) | |
159 | freeaddrinfo(res); | |
160 | } | |
161 | ||
e04f4cb5 | 162 | /** @brief Reconfigure the server |
c0f52b2c | 163 | * @param ev Event loop |
37f29ce9 RK |
164 | * @param flags Flags |
165 | * @return As config_read(); 0 on success, -1 if could not (re-)read config | |
e04f4cb5 | 166 | */ |
37f29ce9 | 167 | int reconfigure(ev_source *ev, unsigned flags) { |
460b9539 | 168 | int need_another_rescan = 0; |
169 | int ret = 0; | |
170 | ||
37f29ce9 | 171 | D(("reconfigure(%x)", flags)); |
e04f4cb5 | 172 | /* Deconfigure the old audio API if there is one */ |
b50cfb8a RK |
173 | if(api) { |
174 | if(api->close_mixer) | |
175 | api->close_mixer(); | |
176 | api = NULL; | |
177 | } | |
37f29ce9 | 178 | if(flags & RECONFIGURE_RELOADING) { |
e04f4cb5 | 179 | /* If there's a rescan in progress, cancel it but remember to start a fresh |
36c5e137 | 180 | * one after the reload. */ |
460b9539 | 181 | need_another_rescan = trackdb_rescan_cancel(); |
e04f4cb5 | 182 | /* (Re-)read the configuration */ |
02ba7921 | 183 | if(config_read(1/*server*/, config)) |
460b9539 | 184 | ret = -1; |
185 | else { | |
186 | /* Tell the speaker it needs to reload its config too. */ | |
187 | speaker_reload(); | |
2e9ba080 | 188 | disorder_info("%s: installed new configuration", configfile); |
460b9539 | 189 | } |
36c5e137 | 190 | } |
e04f4cb5 | 191 | /* New audio API */ |
b50cfb8a | 192 | api = uaudio_find(config->api); |
ba70caca RK |
193 | if(api->configure) |
194 | api->configure(); | |
b50cfb8a RK |
195 | if(api->open_mixer) |
196 | api->open_mixer(); | |
e04f4cb5 | 197 | /* If we interrupted a rescan of all the tracks, start a new one */ |
460b9539 | 198 | if(need_another_rescan) |
dd9af5cb | 199 | trackdb_rescan(ev, 1/*check*/, 0, 0); |
37f29ce9 RK |
200 | if(!ret && !(flags & RECONFIGURE_FIRST)) { |
201 | /* Open/close sockets */ | |
202 | reset_sockets(ev); | |
460b9539 | 203 | } |
204 | return ret; | |
205 | } | |
206 | ||
207 | /* | |
208 | Local Variables: | |
209 | c-basic-offset:2 | |
210 | comment-column:40 | |
e04f4cb5 RK |
211 | fill-column:79 |
212 | indent-tabs-mode:nil | |
460b9539 | 213 | End: |
214 | */ |