Mercurial > dovecot > original-hg > dovecot-1.2
annotate src/master/main.c @ 697:7814b29d0862 HEAD
Created env_put() and env_clean() for a bit easier handling of environment
variables.
| author | Timo Sirainen <tss@iki.fi> |
|---|---|
| date | Tue, 26 Nov 2002 21:49:06 +0200 |
| parents | 90a65c017bf0 |
| children | 8dd8ebe6bcac |
| rev | line source |
|---|---|
| 0 | 1 /* Copyright (C) 2002 Timo Sirainen */ |
| 2 | |
| 3 #include "common.h" | |
| 4 #include "ioloop.h" | |
| 5 #include "lib-signals.h" | |
| 6 #include "network.h" | |
|
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7 #include "env-util.h" |
| 0 | 8 |
| 9 #include "auth-process.h" | |
| 10 #include "login-process.h" | |
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11 #include "ssl-init.h" |
| 0 | 12 |
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13 #include <stdio.h> |
| 0 | 14 #include <stdlib.h> |
| 15 #include <unistd.h> | |
| 16 #include <fcntl.h> | |
| 17 #include <syslog.h> | |
| 18 #include <sys/stat.h> | |
| 19 #include <sys/wait.h> | |
| 20 | |
| 21 const char *process_names[PROCESS_TYPE_MAX] = { | |
| 22 "unknown", | |
| 23 "auth", | |
| 24 "login", | |
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25 "imap", |
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26 "ssl-param" |
| 0 | 27 }; |
| 28 | |
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29 static const char *configfile = SYSCONFDIR "/" PACKAGE ".conf"; |
| 0 | 30 static IOLoop ioloop; |
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31 static Timeout to; |
| 0 | 32 |
| 33 HashTable *pids; | |
| 34 int null_fd, imap_fd, imaps_fd; | |
| 35 | |
| 36 int validate_str(const char *str, int max_len) | |
| 37 { | |
| 38 int i; | |
| 39 | |
| 40 for (i = 0; i < max_len; i++) { | |
| 41 if (str[i] == '\0') | |
| 42 return TRUE; | |
| 43 } | |
| 44 | |
| 45 return FALSE; | |
| 46 } | |
| 47 | |
| 48 void clean_child_process(void) | |
| 49 { | |
| 50 /* remove all environment, we don't need them */ | |
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51 env_clean(); |
| 0 | 52 |
| 53 /* set the failure log */ | |
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54 if (set_log_path != NULL) |
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55 env_put(t_strconcat("IMAP_LOGFILE=", set_log_path, NULL)); |
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56 if (set_log_timestamp != NULL) |
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57 env_put(t_strconcat("IMAP_LOGSTAMP=", set_log_timestamp, NULL)); |
| 0 | 58 |
| 59 (void)close(null_fd); | |
| 60 (void)close(imap_fd); | |
| 61 (void)close(imaps_fd); | |
| 62 | |
| 63 /* close fds for auth/login processes */ | |
| 64 login_processes_cleanup(); | |
| 65 auth_processes_cleanup(); | |
| 66 | |
| 67 closelog(); | |
| 68 } | |
| 69 | |
| 70 static void sig_quit(int signo __attr_unused__) | |
| 71 { | |
| 72 io_loop_stop(ioloop); | |
| 73 } | |
| 74 | |
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75 static void settings_reload(void) |
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76 { |
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77 i_warning("SIGHUP received - reloading configuration"); |
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78 |
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79 settings_read(configfile); |
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80 |
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81 /* restart auth and login processes */ |
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82 login_processes_destroy_all(); |
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83 auth_processes_destroy_all(); |
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84 } |
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85 |
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86 static void timeout_handler(void *context __attr_unused__, |
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87 Timeout timeout __attr_unused__) |
| 0 | 88 { |
| 89 const char *process_type_name; | |
| 90 pid_t pid; | |
| 91 int status, process_type; | |
| 92 | |
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93 if (lib_signal_hup != 0) { |
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94 settings_reload(); |
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95 lib_signal_hup = 0; |
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96 } |
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97 |
| 0 | 98 while ((pid = waitpid(-1, &status, WNOHANG)) > 0) { |
| 99 /* get the type and remove from hash */ | |
| 100 process_type = PID_GET_PROCESS_TYPE(pid); | |
| 101 PID_REMOVE_PROCESS_TYPE(pid); | |
| 102 | |
| 103 if (process_type == PROCESS_TYPE_IMAP) | |
| 104 imap_process_destroyed(pid); | |
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105 if (process_type == PROCESS_TYPE_SSL_PARAM) |
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106 ssl_parameter_process_destroyed(pid); |
| 0 | 107 |
| 108 /* write errors to syslog */ | |
| 109 process_type_name = process_names[process_type]; | |
| 110 if (WIFEXITED(status)) { | |
| 111 status = WEXITSTATUS(status); | |
| 112 if (status != 0) { | |
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113 login_process_abormal_exit(pid); |
| 0 | 114 i_error("child %d (%s) returned error %d", |
| 115 (int)pid, process_type_name, status); | |
| 116 } | |
| 117 } else if (WIFSIGNALED(status)) { | |
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118 login_process_abormal_exit(pid); |
| 0 | 119 i_error("child %d (%s) killed with signal %d", |
| 120 (int)pid, process_type_name, WTERMSIG(status)); | |
| 121 } | |
| 122 } | |
| 123 | |
| 124 if (pid == -1 && errno != EINTR && errno != ECHILD) | |
| 125 i_warning("waitpid() failed: %m"); | |
| 126 } | |
| 127 | |
| 128 static IPADDR *resolve_ip(const char *name) | |
| 129 { | |
| 130 IPADDR *ip; | |
| 131 int ret, ips_count; | |
| 132 | |
| 36 | 133 if (name == NULL || *name == '\0') |
| 0 | 134 return NULL; |
| 135 | |
| 136 ret = net_gethostbyname(name, &ip, &ips_count); | |
| 137 if (ret != 0) | |
| 36 | 138 i_fatal("Can't resolve address: %s", name); |
| 0 | 139 |
| 140 if (ips_count < 1) | |
| 36 | 141 i_fatal("No IPs for address: %s", name); |
| 0 | 142 |
| 143 return ip; | |
| 144 } | |
| 145 | |
| 146 static void open_fds(void) | |
| 147 { | |
| 148 IPADDR *imap_ip, *imaps_ip; | |
| 149 | |
| 150 imap_ip = resolve_ip(set_imap_listen); | |
| 151 imaps_ip = resolve_ip(set_imaps_listen); | |
| 152 | |
| 153 if (imaps_ip == NULL && set_imaps_listen == NULL) | |
| 154 imaps_ip = imap_ip; | |
| 155 | |
| 156 null_fd = open("/dev/null", O_RDONLY); | |
| 157 if (null_fd == -1) | |
| 158 i_fatal("Can't open /dev/null: %m"); | |
| 159 | |
| 160 imap_fd = set_imap_port == 0 ? dup(null_fd) : | |
| 161 net_listen(imap_ip, &set_imap_port); | |
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162 if (imap_fd == -1) |
| 468 | 163 i_fatal("listen(%d) failed: %m", set_imap_port); |
| 0 | 164 |
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165 #ifdef HAVE_SSL |
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166 imaps_fd = set_ssl_cert_file == NULL || *set_ssl_cert_file == '\0' || |
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167 set_ssl_key_file == NULL || *set_ssl_key_file == '\0' || |
| 0 | 168 set_imaps_port == 0 ? dup(null_fd) : |
| 169 net_listen(imaps_ip, &set_imaps_port); | |
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170 #else |
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171 imaps_fd = dup(null_fd); |
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172 #endif |
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173 if (imaps_fd == -1) |
| 0 | 174 i_fatal("listen(%d) failed: %m", set_imaps_port); |
| 175 } | |
| 176 | |
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177 static void main_init(void) |
| 0 | 178 { |
| 179 lib_init_signals(sig_quit); | |
| 180 | |
| 181 /* deny file access from everyone else except owner */ | |
| 182 (void)umask(0077); | |
| 183 | |
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184 if (set_log_path == NULL) { |
| 0 | 185 openlog("imap-master", LOG_NDELAY, LOG_MAIL); |
| 186 | |
| 187 i_set_panic_handler(i_syslog_panic_handler); | |
| 188 i_set_fatal_handler(i_syslog_fatal_handler); | |
| 189 i_set_error_handler(i_syslog_error_handler); | |
| 190 i_set_warning_handler(i_syslog_warning_handler); | |
| 191 } else { | |
| 192 /* log failures into specified log file */ | |
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193 i_set_failure_file(set_log_path, "imap-master"); |
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194 i_set_failure_timestamp_format(set_log_timestamp); |
| 0 | 195 } |
| 196 | |
| 197 pids = hash_create(default_pool, 128, NULL, NULL); | |
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198 to = timeout_add(100, timeout_handler, NULL); |
| 0 | 199 |
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200 ssl_init(); |
| 0 | 201 auth_processes_init(); |
| 202 login_processes_init(); | |
| 203 } | |
| 204 | |
| 205 static void main_deinit(void) | |
| 206 { | |
| 207 if (lib_signal_kill != 0) | |
| 208 i_warning("Killed with signal %d", lib_signal_kill); | |
| 209 | |
| 210 login_processes_deinit(); | |
| 211 auth_processes_deinit(); | |
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212 ssl_deinit(); |
| 0 | 213 |
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214 timeout_remove(to); |
| 0 | 215 |
| 216 (void)close(null_fd); | |
| 217 (void)close(imap_fd); | |
| 218 (void)close(imaps_fd); | |
| 219 | |
| 220 hash_destroy(pids); | |
| 221 closelog(); | |
| 222 } | |
| 223 | |
| 224 static void daemonize(void) | |
| 225 { | |
| 226 pid_t pid; | |
| 227 | |
| 228 pid = fork(); | |
| 229 if (pid < 0) | |
| 230 i_fatal("fork() failed: %m"); | |
| 231 | |
| 232 if (pid != 0) | |
| 233 _exit(0); | |
| 610 | 234 |
| 235 setsid(); | |
| 0 | 236 } |
| 237 | |
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238 static void print_help(void) |
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239 { |
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240 printf("Usage: imap-master [-F] [-c <config file>]\n"); |
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241 } |
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242 |
| 0 | 243 int main(int argc, char *argv[]) |
| 244 { | |
| 245 /* parse arguments */ | |
| 246 int foreground = FALSE; | |
| 247 int i; | |
| 248 | |
| 249 lib_init(); | |
| 250 | |
| 251 for (i = 1; i < argc; i++) { | |
| 252 if (strcmp(argv[i], "-F") == 0) { | |
| 253 /* foreground */ | |
| 254 foreground = TRUE; | |
| 255 } else if (strcmp(argv[i], "-c") == 0) { | |
| 256 /* config file */ | |
| 257 i++; | |
| 258 if (i == argc) i_fatal("Missing config file argument"); | |
| 259 configfile = argv[i]; | |
| 260 } else { | |
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261 print_help(); |
| 0 | 262 i_fatal("Unknown argument: %s", argv[1]); |
| 263 } | |
| 264 } | |
| 265 | |
| 266 /* read and verify settings before forking */ | |
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267 settings_init(); |
| 0 | 268 settings_read(configfile); |
| 269 open_fds(); | |
| 270 | |
| 271 if (!foreground) | |
| 272 daemonize(); | |
| 273 | |
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274 ioloop = io_loop_create(system_pool); |
| 0 | 275 |
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276 main_init(); |
| 0 | 277 io_loop_run(ioloop); |
| 278 main_deinit(); | |
| 279 | |
| 280 io_loop_destroy(ioloop); | |
| 281 lib_deinit(); | |
| 282 | |
| 283 return 0; | |
| 284 } |