/**
* Run the daemon.
* @param cfgfile: the config file name.
* @param cmdline_verbose: verbosity resulting from commandline -v.
* These increase verbosity as specified in the config file.
* @param debug_mode: if set, do not daemonize.
* @param log_default_identity: Default identity to report in logs
*/
static void
run_daemon(const char* cfgfile, int cmdline_verbose, int debug_mode, const char* log_default_identity)
{
struct config_file* cfg = NULL;
struct daemon* daemon = NULL;
int done_setup = 0;
if(!(daemon = daemon_init()))
fatal_exit("alloc failure");
while(!daemon->need_to_exit) {
if(done_setup)
verbose(VERB_OPS, "Restart of %s.", PACKAGE_STRING);
else verbose(VERB_OPS, "Start of %s.", PACKAGE_STRING);
/* config stuff */
if(!(cfg = config_create()))
fatal_exit("Could not alloc config defaults");
if(!config_read(cfg, cfgfile, daemon->chroot)) {
if(errno != ENOENT)
fatal_exit("Could not read config file: %s",
cfgfile);
log_warn("Continuing with default config settings");
}
apply_settings(daemon, cfg, cmdline_verbose, debug_mode, log_default_identity);
if(!done_setup)
config_lookup_uid(cfg);
/* prepare */
if(!daemon_open_shared_ports(daemon))
fatal_exit("could not open ports");
if(!done_setup) {
perform_setup(daemon, cfg, debug_mode, &cfgfile);
done_setup = 1;
} else {
/* reopen log after HUP to facilitate log rotation */
if(!cfg->use_syslog)
log_init(cfg->logfile, 0, cfg->chrootdir);
}
/* work */
daemon_fork(daemon);
/* clean up for restart */
verbose(VERB_ALGO, "cleanup.");
daemon_cleanup(daemon);
config_delete(cfg);
}
verbose(VERB_ALGO, "Exit cleanup.");
/* this unlink may not work if the pidfile is located outside
* of the chroot/workdir or we no longer have permissions */
if(daemon->pidfile) {
int fd;
/* truncate pidfile */
fd = open(daemon->pidfile, O_WRONLY | O_TRUNC, 0644);
if(fd != -1)
close(fd);
/* delete pidfile */
unlink(daemon->pidfile);
}
daemon_delete(daemon);
}
/**
* Init service. Keeps calling status pending to tell service control
* manager that this process is not hanging.
* @param r: restart, true on restart
* @param d: daemon returned here.
* @param c: config file returned here.
* @return false if failed.
*/
static int
service_init(int r, struct daemon** d, struct config_file** c)
{
struct config_file* cfg = NULL;
struct daemon* daemon = NULL;
if(!service_cfgfile) {
char* newf = lookup_reg_str("Software\\Unbound", "ConfigFile");
if(newf) service_cfgfile = newf;
else service_cfgfile = strdup(CONFIGFILE);
if(!service_cfgfile) fatal_exit("out of memory");
}
/* create daemon */
if(r) daemon = *d;
else daemon = daemon_init();
if(!daemon) return 0;
if(!r) report_status(SERVICE_START_PENDING, NO_ERROR, 2800);
/* read config */
cfg = config_create();
if(!cfg) return 0;
if(!config_read(cfg, service_cfgfile, daemon->chroot)) {
if(errno != ENOENT) {
log_err("error in config file");
return 0;
}
log_warn("could not open config file, using defaults");
}
if(!r) report_status(SERVICE_START_PENDING, NO_ERROR, 2600);
verbose(VERB_QUERY, "winservice - apply settings");
/* apply settings and init */
verbosity = cfg->verbosity + service_cmdline_verbose;
if(cfg->directory && cfg->directory[0]) {
if(chdir(cfg->directory)) {
log_err("could not chdir to %s: %s",
cfg->directory, strerror(errno));
if(errno != ENOENT)
return 0;
log_warn("could not change directory - continuing");
} else
verbose(VERB_QUERY, "chdir to %s", cfg->directory);
}
log_init(cfg->logfile, cfg->use_syslog, cfg->chrootdir);
if(!r) report_status(SERVICE_START_PENDING, NO_ERROR, 2400);
verbose(VERB_QUERY, "winservice - apply cfg");
daemon_apply_cfg(daemon, cfg);
if(!r) report_status(SERVICE_START_PENDING, NO_ERROR, 2300);
if(!(daemon->rc = daemon_remote_create(cfg))) {
log_err("could not set up remote-control");
daemon_delete(daemon);
config_delete(cfg);
return 0;
}
/* open ports */
/* keep reporting that we are busy starting */
if(!r) report_status(SERVICE_START_PENDING, NO_ERROR, 2200);
verbose(VERB_QUERY, "winservice - open ports");
if(!daemon_open_shared_ports(daemon)) return 0;
verbose(VERB_QUERY, "winservice - ports opened");
if(!r) report_status(SERVICE_START_PENDING, NO_ERROR, 2000);
*d = daemon;
*c = cfg;
return 1;
}
