eigrp_main.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * EIGRP Main Routine.
 * Copyright (C) 2013-2015
 * Authors:
 *   Donnie Savage
 *   Jan Janovic
 *   Matej Perina
 *   Peter Orsag
 *   Peter Paluch
 *   Frantisek Gazo
 *   Tomas Hvorkovy
 *   Martin Kontsek
 *   Lukas Koribsky
 */
#include "eigrpd/eigrpd.h"
#include "eigrpd/eigrp_structs.h"
#include "eigrpd/eigrp_dump.h"
#include "eigrpd/eigrp_interface.h"
#include "eigrpd/eigrp_neighbor.h"
#include "eigrpd/eigrp_packet.h"
#include "eigrpd/eigrp_vty.h"
#include "eigrpd/eigrp_zebra.h"
#include "eigrpd/eigrp_network.h"
#include "eigrpd/eigrp_snmp.h"
#include "eigrpd/eigrp_filter.h"
#include "eigrpd/eigrp_errors.h"
#include "eigrpd/eigrp_vrf.h"
#include "eigrpd/eigrp_cli.h"
#include "eigrpd/eigrp_yang.h"

#include "zclient.h"
#include "routemap.h"
#include "libfrr.h"

#include <lib/version.h>
#include "lib/keychain.h"

/* EIGRPd options. */
struct option longopts[] = {{0}};

/* Master of events. */
struct event_loop *eigrpd_event;

/* Forward declaration of daemon info structure. */
static struct frr_daemon_info eigrpd_di;

/* SIGHUP handler. */
static void sighup(void)
{
	zlog_info("SIGHUP received");

	/* Reload config file. */
	vty_read_config(NULL, eigrpd_di.config_file, config_default);
}

/* SIGINT / SIGTERM handler. */
static void sigint(void)
{
	zlog_notice("Terminating on signal");
	eigrp_terminate();

	exit(0);
}

/* SIGUSR1 handler. */
static void sigusr1(void)
{
	zlog_rotate();
}

struct frr_signal_t eigrp_signals[] = {
	{
		.signal = SIGHUP,
		.handler = &sighup,
	},
	{
		.signal = SIGUSR1,
		.handler = &sigusr1,
	},
	{
		.signal = SIGINT,
		.handler = &sigint,
	},
	{
		.signal = SIGTERM,
		.handler = &sigint,
	},
};

static const struct frr_yang_module_info *const eigrpd_yang_modules[] = {
	&frr_eigrpd_info,
	&frr_filter_info,
	&frr_interface_info,
	&frr_route_map_info,
	&frr_vrf_info,
};

FRR_DAEMON_INFO(eigrpd, EIGRP, .vty_port = EIGRP_VTY_PORT,

		.proghelp = "Implementation of the EIGRP routing protocol.",

		.signals = eigrp_signals,
		.n_signals = array_size(eigrp_signals),

		.privs = &eigrpd_privs, .yang_modules = eigrpd_yang_modules,
		.n_yang_modules = array_size(eigrpd_yang_modules),
);

/* EIGRPd main routine. */
int main(int argc, char **argv, char **envp)
{
	frr_preinit(&eigrpd_di, argc, argv);
	frr_opt_add("", longopts, "");

	while (1) {
		int opt;

		opt = frr_getopt(argc, argv, NULL);

		if (opt == EOF)
			break;

		switch (opt) {
		case 0:
			break;
		default:
			frr_help_exit(1);
		}
	}

	eigrp_sw_version_init();

	/* EIGRP frr event init. */
	eigrp_init();
	eigrp_om->event = frr_init();
	eigrpd_event = eigrp_om->event;

	eigrp_error_init();
	eigrp_vrf_init();

	/*EIGRPd init*/
	eigrp_intf_init();
	eigrp_zebra_init();
	eigrp_debug_init();

	/* Get configuration file. */
	/* EIGRP VTY inits */
	eigrp_vty_init();
	keychain_init();
	eigrp_vty_show_init();
	eigrp_cli_init();

#ifdef HAVE_SNMP
	eigrp_snmp_init();
#endif /* HAVE_SNMP */

	/* Access list install. */
	access_list_init();
	access_list_add_hook(eigrp_distribute_update_all_wrapper);
	access_list_delete_hook(eigrp_distribute_update_all_wrapper);

	/* Prefix list initialize.*/
	prefix_list_init();
	prefix_list_add_hook(eigrp_distribute_update_all);
	prefix_list_delete_hook(eigrp_distribute_update_all);

	/*
	 * XXX: This is just to get the CLI installed to suppress VTYSH errors.
	 * Routemaps in EIGRP are not yet functional.
	 */
	route_map_init();
	/*eigrp_route_map_init();
	  route_map_add_hook (eigrp_rmap_update);
	  route_map_delete_hook (eigrp_rmap_update);*/
	/*if_rmap_init (EIGRP_NODE); */

	frr_config_fork();
	frr_run(eigrpd_event);

	/* Not reached. */
	return 0;
}