bool
logger_init(t_configuration_options * opts, const char *ident)
{
char *level = opts->loglevel;
char *facility = opts->logfacility;
int l;
int f;
#ifdef HAVE_SYSLOG
int syslog_facility = DEFAULT_SYSLOG_FACILITY;
#endif
#ifdef REPMGR_DEBUG
printf("Logger initialisation (Level: %s, Facility: %s)\n", level, facility);
#endif
if (!ident)
{
ident = DEFAULT_IDENT;
}
if (level && *level)
{
l = detect_log_level(level);
#ifdef REPMGR_DEBUG
printf("Assigned level for logger: %d\n", l);
#endif
if (l >= 0)
log_level = l;
else
stderr_log_warning(_("Invalid log level \"%s\" (available values: DEBUG, INFO, NOTICE, WARNING, ERR, ALERT, CRIT or EMERG)\n"), level);
}
if (facility && *facility)
{
f = detect_log_facility(facility);
#ifdef REPMGR_DEBUG
printf("Assigned facility for logger: %d\n", f);
#endif
if (f == 0)
{
/* No syslog requested, just stderr */
#ifdef REPMGR_DEBUG
printf(_("Use stderr for logging\n"));
#endif
}
else if (f == -1)
{
stderr_log_warning(_("Cannot detect log facility %s (use any of LOCAL0, LOCAL1, ..., LOCAL7, USER or STDERR)\n"), facility);
}
#ifdef HAVE_SYSLOG
else
{
syslog_facility = f;
log_type = REPMGR_SYSLOG;
}
#endif
}
#ifdef HAVE_SYSLOG
if (log_type == REPMGR_SYSLOG)
{
setlogmask(LOG_UPTO(log_level));
openlog(ident, LOG_CONS | LOG_PID | LOG_NDELAY, syslog_facility);
stderr_log_notice(_("Setup syslog (level: %s, facility: %s)\n"), level, facility);
}
#endif
if (*opts->logfile)
{
FILE *fd;
/* Check if we can write to the specified file before redirecting
* stderr - if freopen() fails, stderr output will vanish into
* the ether and the user won't know what's going on.
*/
fd = fopen(opts->logfile, "a");
if (fd == NULL)
{
stderr_log_err(_("Unable to open specified logfile '%s' for writing: %s\n"), opts->logfile, strerror(errno));
stderr_log_err(_("Terminating\n"));
exit(ERR_BAD_CONFIG);
}
fclose(fd);
stderr_log_notice(_("Redirecting logging output to '%s'\n"), opts->logfile);
fd = freopen(opts->logfile, "a", stderr);
/* It's possible freopen() may still fail due to e.g. a race condition;
as it's not feasible to restore stderr after a failed freopen(),
we'll write to stdout as a last resort.
*/
if (fd == NULL)
{
printf(_("Unable to open specified logfile %s for writing: %s\n"), opts->logfile, strerror(errno));
printf(_("Terminating\n"));
exit(ERR_BAD_CONFIG);
}
}
return true;
}
bool logger_init(t_configuration_options *opts, const char* ident, const char* level, const char* facility)
{
int l;
int f;
#ifdef HAVE_SYSLOG
int syslog_facility = DEFAULT_SYSLOG_FACILITY;
#endif
#ifdef REPMGR_DEBUG
printf("Logger initialisation (Level: %s, Facility: %s)\n", level, facility);
#endif
if (!ident)
{
ident = DEFAULT_IDENT;
}
if (level && *level)
{
l = detect_log_level(level);
#ifdef REPMGR_DEBUG
printf("Assigned level for logger: %d\n", l);
#endif
if (l > 0)
log_level = l;
else
stderr_log_warning(_("Cannot detect log level %s (use any of DEBUG, INFO, NOTICE, WARNING, ERR, ALERT, CRIT or EMERG)\n"), level);
}
if (facility && *facility)
{
f = detect_log_facility(facility);
#ifdef REPMGR_DEBUG
printf("Assigned facility for logger: %d\n", f);
#endif
if (f == 0)
{
/* No syslog requested, just stderr */
#ifdef REPMGR_DEBUG
printf(_("Use stderr for logging\n"));
#endif
}
else if (f == -1)
{
stderr_log_warning(_("Cannot detect log facility %s (use any of LOCAL0, LOCAL1, ..., LOCAL7, USER or STDERR)\n"), facility);
}
#ifdef HAVE_SYSLOG
else
{
syslog_facility = f;
log_type = REPMGR_SYSLOG;
}
#endif
}
#ifdef HAVE_SYSLOG
if (log_type == REPMGR_SYSLOG)
{
setlogmask (LOG_UPTO (log_level));
openlog (ident, LOG_CONS | LOG_PID | LOG_NDELAY, syslog_facility);
stderr_log_notice(_("Setup syslog (level: %s, facility: %s)\n"), level, facility);
}
#endif
if (*opts->logfile)
{
freopen(opts->logfile, "a", stderr);
}
return true;
}