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#include "port/stdbool.h" /* for bool */
#include <unistd.h> /* for exit, unistd, getuid, getppid */
#include <stdlib.h> /* for EXIT_FAILURE, EXIT_SUCCESS */
#include <string.h> /* for memset */
#include "errors.h" /* global error codes */
#include "log.h" /* logging facility */
#include "daemon/daemon.h" /* Unix daemonizing code */
#include "daemon/signals.h" /* signal supension */
#include "port/unused.h"
#include "testd_cmdline.h" /* for command line and option parsing (gengetopt) */
#define DEFAULT_CONFIG_FILE "/etc/" CMDLINE_PARSER_PACKAGE ".conf"
static int parse_options_and_arguments( int argc, char *argv[], struct gengetopt_args_info *args_info ) {
cmdline_parser_init( args_info );
if( cmdline_parser2( argc, argv, args_info, 1, 0, 1 ) != 0 ) {
cmdline_parser_free( args_info );
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
static int test_config( const char *filename ) {
UNUSED( filename );
return EXIT_SUCCESS;
}
static int read_config( const char *filename, struct gengetopt_args_info *args_info ) {
char *config_filename = strdup( filename );
if( cmdline_parser_configfile( config_filename, args_info, 1, 0, 1 ) != 0 ) {
fprintf( stderr, "\n%s\n", gengetopt_args_info_usage );
cmdline_parser_free( args_info );
free( config_filename );
return EXIT_FAILURE;
}
free( config_filename );
return EXIT_SUCCESS;
}
int main( int argc, char *argv[] ) {
struct gengetopt_args_info args_info;
wolf_error_t error;
daemon_params_t daemon_params;
daemon_p demon = NULL;
int sig = 0;
if( parse_options_and_arguments( argc, argv, &args_info ) == EXIT_FAILURE ) {
exit( EXIT_FAILURE );
}
if( read_config( args_info.config_file_given ?
args_info.config_file_arg : DEFAULT_CONFIG_FILE, &args_info ) == EXIT_FAILURE ) {
exit( EXIT_FAILURE );
}
if( args_info.test_given ) {
cmdline_parser_free( &args_info );
exit( test_config( args_info.config_file_given ?
args_info.config_file_arg : DEFAULT_CONFIG_FILE ) );
}
openlogtostderr( log_DEBUG - 1 + (int)args_info.debug_given );
if( args_info.logfile_given )
openlogtofile( args_info.logfile_arg,
args_info.logfile_level_given ?
log_str_to_level( args_info.logfile_level_arg ) : log_NOTICE );
if( !args_info.foreground_given ) {
openlogtosyslog( CMDLINE_PARSER_PACKAGE,
args_info.syslog_facility_given ?
log_str_to_syslog_facility( args_info.syslog_facility_arg ) : log_DAEMON,
args_info.syslog_level_given ?
log_str_to_level( args_info.syslog_level_arg ) : log_NOTICE );
memset( &daemon_params, 0, sizeof( daemon_params ) );
daemon_params.daemon_name = CMDLINE_PARSER_PACKAGE;
daemon_params.pid_filename = args_info.pidfile_given ?
args_info.pidfile_arg : NULL;
daemon_params.group_name = args_info.group_given ?
args_info.group_arg : NULL;
daemon_params.user_name = args_info.user_given ?
args_info.user_arg : NULL;
demon = daemon_new( daemon_params, &error );
if( demon == NULL ) {
cmdline_parser_free( &args_info );
exit( EXIT_FAILURE );
}
if( ( error = daemon_start( demon ) ) != WOLF_OK ) {
cmdline_parser_free( &args_info );
daemon_exit( demon );
}
} else {
if( ( error = signal_initialize( ) ) != WOLF_OK ) {
cmdline_parser_free( &args_info );
exit( EXIT_FAILURE );
}
if( ( error = signal_install_handlers_daemon( ) ) != WOLF_OK ) {
signal_terminate( );
cmdline_parser_free( &args_info );
exit( EXIT_FAILURE );
}
}
LOG( log_NOTICE, "Started %s daemon", CMDLINE_PARSER_PACKAGE );
while( ( sig != SIGTERM ) && ( sig != SIGINT ) && ( sig != -1 ) ) {
sig = signal_suspend( 60, &error );
switch( sig ) {
case 0: /* timeout */
break;
case -1: /* internal error */
break;
case SIGHUP:
LOG( log_NOTICE, "Rereading configuration" );
break;
case SIGTERM:
case SIGINT:
LOG( log_NOTICE, "Got termination signal, shutting down the daemon" );
break;
case SIGUSR1:
break;
case SIGUSR2:
break;
default:
LOG( log_ERR, "Unexpected signal '%s' (%s, %d)",
signal_get_long_name( sig ),
signal_get_short_name( sig ),
sig );
}
}
LOG( log_NOTICE, "Stopped %s daemon", CMDLINE_PARSER_PACKAGE );
if( !args_info.foreground_given ) {
cmdline_parser_free( &args_info );
daemon_exit( demon );
} else {
cmdline_parser_free( &args_info );
signal_terminate( );
exit( EXIT_SUCCESS );
}
exit( EXIT_FAILURE );
}
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