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/* NHRP daemon main functions
* Copyright (c) 2014-2015 Timo Teräs
*
* This file is free software: you may copy, redistribute and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*/
#include <unistd.h>
#include "zebra.h"
#include "privs.h"
#include "getopt.h"
#include "thread.h"
#include "sigevent.h"
#include "version.h"
#include "log.h"
#include "memory.h"
#include "memory_vty.h"
#include "command.h"
#include "libfrr.h"
#include "nhrpd.h"
#include "netlink.h"
DEFINE_MGROUP(NHRPD, "NHRP")
unsigned int debug_flags = 0;
struct thread_master *master;
struct timeval current_time;
/* nhrpd options. */
struct option longopts[] = {{0}};
/* nhrpd privileges */
static zebra_capabilities_t _caps_p[] = {
ZCAP_NET_RAW, ZCAP_NET_ADMIN,
ZCAP_DAC_OVERRIDE, /* for now needed to write to
/proc/sys/net/ipv4/<if>/send_redirect */
};
struct zebra_privs_t nhrpd_privs = {
#if defined(FRR_USER) && defined(FRR_GROUP)
.user = FRR_USER,
.group = FRR_GROUP,
#endif
#ifdef VTY_GROUP
.vty_group = VTY_GROUP,
#endif
.caps_p = _caps_p,
.cap_num_p = ZEBRA_NUM_OF(_caps_p),
};
static void parse_arguments(int argc, char **argv)
{
int opt;
while (1) {
opt = frr_getopt(argc, argv, 0);
if (opt < 0)
break;
switch (opt) {
case 0:
break;
default:
frr_help_exit(1);
break;
}
}
}
static void nhrp_sigusr1(void)
{
zlog_rotate();
}
static void nhrp_request_stop(void)
{
debugf(NHRP_DEBUG_COMMON, "Exiting...");
frr_early_fini();
nhrp_shortcut_terminate();
nhrp_nhs_terminate();
nhrp_zebra_terminate();
vici_terminate();
evmgr_terminate();
nhrp_vc_terminate();
vrf_terminate();
debugf(NHRP_DEBUG_COMMON, "Done.");
frr_fini();
exit(0);
}
static struct quagga_signal_t sighandlers[] = {
{
.signal = SIGUSR1,
.handler = &nhrp_sigusr1,
},
{
.signal = SIGINT,
.handler = &nhrp_request_stop,
},
{
.signal = SIGTERM,
.handler = &nhrp_request_stop,
},
};
FRR_DAEMON_INFO(nhrpd, NHRP, .vty_port = NHRP_VTY_PORT,
.proghelp = "Implementation of the NHRP routing protocol.",
.signals = sighandlers, .n_signals = array_size(sighandlers),
.privs = &nhrpd_privs, )
int main(int argc, char **argv)
{
frr_preinit(&nhrpd_di, argc, argv);
frr_opt_add("", longopts, "");
parse_arguments(argc, argv);
/* Library inits. */
master = frr_init();
vrf_init(NULL, NULL, NULL, NULL);
nhrp_interface_init();
resolver_init();
/* Run with elevated capabilities, as for all netlink activity
* we need privileges anyway. */
nhrpd_privs.change(ZPRIVS_RAISE);
netlink_init();
evmgr_init();
nhrp_vc_init();
nhrp_packet_init();
vici_init();
nhrp_zebra_init();
nhrp_shortcut_init();
nhrp_config_init();
frr_config_fork();
frr_run(master);
return 0;
}
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