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/*
* Embedded Linux library
* Copyright (C) 2020 Intel Corporation
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#define _GNU_SOURCE
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <assert.h>
#include <signal.h>
#include <sys/socket.h>
#include <linux/if_arp.h>
#include <getopt.h>
#include <ell/ell.h>
static enum l_acd_defend_policy policy = L_ACD_DEFEND_POLICY_DEFEND;
static void do_debug(const char *str, void *user_data)
{
const char *prefix = user_data;
l_info("%s%s", prefix, str);
}
static void signal_handler(uint32_t signo, void *user_data)
{
switch (signo) {
case SIGINT:
case SIGTERM:
l_info("Terminate");
l_main_quit();
break;
}
}
static void event_handler(enum l_acd_event event, void *user_data)
{
char *ip = user_data;
switch (event) {
case L_ACD_EVENT_CONFLICT:
l_info("IP %s conflicts with another host", ip);
break;
case L_ACD_EVENT_AVAILABLE:
l_info("IP %s is available", ip);
break;
case L_ACD_EVENT_LOST:
l_info("IP %s has been lost", ip);
l_main_quit();
break;
}
if (policy == L_ACD_DEFEND_POLICY_NONE)
l_main_quit();
}
static void usage(void)
{
printf("acd-client usage\n"
"Usage:\n");
printf("\tacd-client <ifindex> <ip> [options]\n");
printf("Options:\n"
"\t-D, --defend [=policy] Keep running to defend address, "
"optionally by policy:\n"
"\t\tnone: never defend\n"
"\t\tdefend: defend once (default)\n"
"\t\tinfinite: defend infinitely\n"
"\t-n, --no-probes Disable initial probe stage\n"
"\t-d, --debug Run with debugging on\n");
}
static const struct option main_options[] = {
{ "defend", optional_argument, NULL, 'D' },
{ "no-probes", no_argument, NULL, 'n' },
{ "debug", no_argument, NULL, 'd' },
{ }
};
int main(int argc, char *argv[])
{
struct l_acd *acd;
int ifindex;
bool debug = false;
bool no_probe = false;
l_log_set_stderr();
l_debug_enable("*");
if (argc < 3) {
usage();
exit(0);
}
for (;;) {
int opt;
opt = getopt_long(argc - 2, argv + 2, "ndD::",
main_options, NULL);
if (opt < 0)
break;
switch (opt) {
case 'D':
if (optarg) {
if (!strcmp(optarg, "infinite"))
policy = L_ACD_DEFEND_POLICY_INFINITE;
else if (!strcmp(optarg, "none"))
policy = L_ACD_DEFEND_POLICY_NONE;
}
break;
case 'n':
no_probe = true;
break;
case 'd':
debug = true;
break;
}
}
ifindex = atoi(argv[1]);
if (!l_main_init())
return -1;
acd = l_acd_new(ifindex);
l_acd_set_skip_probes(acd, no_probe);
l_acd_set_defend_policy(acd, policy);
if (debug) {
l_acd_set_debug(acd, do_debug, "[ACD] ", NULL);
l_info("Set debug");
}
l_acd_set_event_handler(acd, event_handler, argv[2], NULL);
l_acd_start(acd, argv[2]);
l_main_run_with_signal(signal_handler, NULL);
l_acd_destroy(acd);
l_main_exit();
return 0;
}
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