| 1 | /* |
| 2 | * This file is part of DisOrder. |
| 3 | * Copyright (C) 2004, 2005 Richard Kettlewell |
| 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" |
| 39 | #include "trackdb.h" |
| 40 | #include "state.h" |
| 41 | #include "configuration.h" |
| 42 | #include "log.h" |
| 43 | #include "queue.h" |
| 44 | #include "server-queue.h" |
| 45 | #include "server.h" |
| 46 | #include "printf.h" |
| 47 | #include "addr.h" |
| 48 | |
| 49 | static const char *current_unix; |
| 50 | static int current_unix_fd; |
| 51 | |
| 52 | static struct addrinfo *current_listen_addrinfo; |
| 53 | static int current_listen_fd; |
| 54 | |
| 55 | void quit(ev_source *ev) { |
| 56 | quitting(ev); |
| 57 | trackdb_close(); |
| 58 | trackdb_deinit(); |
| 59 | info("terminating"); |
| 60 | _exit(0); |
| 61 | } |
| 62 | |
| 63 | static void reset_socket(ev_source *ev) { |
| 64 | const char *new_unix; |
| 65 | struct addrinfo *res; |
| 66 | struct sockaddr_un sun; |
| 67 | char *name; |
| 68 | |
| 69 | static const struct addrinfo pref = { |
| 70 | AI_PASSIVE, |
| 71 | PF_INET, |
| 72 | SOCK_STREAM, |
| 73 | IPPROTO_TCP, |
| 74 | 0, |
| 75 | 0, |
| 76 | 0, |
| 77 | 0 |
| 78 | }; |
| 79 | |
| 80 | /* unix first */ |
| 81 | new_unix = config_get_file("socket"); |
| 82 | if(!current_unix || strcmp(current_unix, new_unix)) { |
| 83 | /* either there was no socket, or there was but a different path */ |
| 84 | if(current_unix) { |
| 85 | /* stop the old one and remove it from the filesystem */ |
| 86 | server_stop(ev, current_unix_fd); |
| 87 | if(unlink(current_unix) < 0) |
| 88 | fatal(errno, "unlink %s", current_unix); |
| 89 | } |
| 90 | /* start the new one */ |
| 91 | if(strlen(new_unix) >= sizeof sun.sun_path) |
| 92 | fatal(0, "socket path %s is too long", new_unix); |
| 93 | memset(&sun, 0, sizeof sun); |
| 94 | sun.sun_family = AF_UNIX; |
| 95 | strcpy(sun.sun_path, new_unix); |
| 96 | if(unlink(new_unix) < 0 && errno != ENOENT) |
| 97 | fatal(errno, "unlink %s", new_unix); |
| 98 | if((current_unix_fd = server_start(ev, PF_UNIX, sizeof sun, |
| 99 | (const struct sockaddr *)&sun, |
| 100 | new_unix)) >= 0) { |
| 101 | current_unix = new_unix; |
| 102 | if(chmod(new_unix, 0777) < 0) |
| 103 | fatal(errno, "error calling chmod %s", new_unix); |
| 104 | } else |
| 105 | current_unix = 0; |
| 106 | } |
| 107 | |
| 108 | /* get the new listen config */ |
| 109 | if(config->listen.n) |
| 110 | res = get_address(&config->listen, &pref, &name); |
| 111 | else |
| 112 | res = 0; |
| 113 | |
| 114 | if((res && !current_listen_addrinfo) |
| 115 | || (current_listen_addrinfo |
| 116 | && (!res |
| 117 | || addrinfocmp(res, current_listen_addrinfo)))) { |
| 118 | /* something has to change */ |
| 119 | if(current_listen_addrinfo) { |
| 120 | /* delete the old listener */ |
| 121 | server_stop(ev, current_listen_fd); |
| 122 | freeaddrinfo(current_listen_addrinfo); |
| 123 | current_listen_addrinfo = 0; |
| 124 | } |
| 125 | if(res) { |
| 126 | /* start the new listener */ |
| 127 | if((current_listen_fd = server_start(ev, res->ai_family, res->ai_addrlen, |
| 128 | res->ai_addr, name)) >= 0) { |
| 129 | current_listen_addrinfo = res; |
| 130 | res = 0; |
| 131 | } |
| 132 | } |
| 133 | } |
| 134 | /* if res is still set it needs freeing */ |
| 135 | if(res) |
| 136 | freeaddrinfo(res); |
| 137 | } |
| 138 | |
| 139 | int reconfigure(ev_source *ev, int reload) { |
| 140 | int need_another_rescan = 0; |
| 141 | int ret = 0; |
| 142 | |
| 143 | D(("reconfigure(%d)", reload)); |
| 144 | if(reload) { |
| 145 | need_another_rescan = trackdb_rescan_cancel(); |
| 146 | trackdb_close(); |
| 147 | if(config_read(1)) |
| 148 | ret = -1; |
| 149 | else { |
| 150 | /* Tell the speaker it needs to reload its config too. */ |
| 151 | speaker_reload(); |
| 152 | info("%s: installed new configuration", configfile); |
| 153 | } |
| 154 | } |
| 155 | trackdb_open(); |
| 156 | if(need_another_rescan) |
| 157 | trackdb_rescan(ev); |
| 158 | if(!ret) { |
| 159 | queue_read(); |
| 160 | recent_read(); |
| 161 | reset_socket(ev); |
| 162 | } |
| 163 | return ret; |
| 164 | } |
| 165 | |
| 166 | /* |
| 167 | Local Variables: |
| 168 | c-basic-offset:2 |
| 169 | comment-column:40 |
| 170 | End: |
| 171 | */ |