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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 <netinet/in.h>
#include <arpa/inet.h>
#include <ell/ell.h>
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 destroy_handler(void *data)
{
l_info("DHCP server destroyed");
}
static void event_handler(struct l_dhcp_server *server,
enum l_dhcp_server_event event,
void *userdata,
const struct l_dhcp_lease *lease)
{
const uint8_t *mac;
char *ip;
switch (event) {
case L_DHCP_SERVER_EVENT_NEW_LEASE:
mac = l_dhcp_lease_get_mac(lease);
ip = l_dhcp_lease_get_address(lease);
l_info("New lease client %02x:%02x:%02x:%02x:%02x:%02x %s",
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
ip);
l_free(ip);
break;
case L_DHCP_SERVER_EVENT_LEASE_EXPIRED:
break;
}
}
int main(int argc, char *argv[])
{
struct l_dhcp_server *server;
int ifindex;
uint8_t mac[6];
char *dns[] = { "192.168.1.1", NULL };
if (argc < 2) {
printf("Usage: %s <interface index>\n", argv[0]);
exit(0);
}
ifindex = atoi(argv[1]);
if (!l_net_get_mac_address(ifindex, mac)) {
printf("Unable to get address from interface %d\n", ifindex);
exit(0);
}
if (!l_main_init())
return -1;
l_log_set_stderr();
l_debug_enable("*");
server = l_dhcp_server_new(ifindex);
l_dhcp_server_set_ip_range(server, "192.168.1.2", "192.168.1.100");
l_dhcp_server_set_netmask(server, "255.255.255.0");
l_dhcp_server_set_gateway(server, "192.168.1.1");
l_dhcp_server_set_dns(server, dns);
l_dhcp_server_set_lease_time(server, 10);
l_dhcp_server_set_debug(server, do_debug, "[DHCP SERV] ", NULL);
l_dhcp_server_set_event_handler(server, event_handler, NULL,
destroy_handler);
l_dhcp_server_start(server);
l_main_run_with_signal(signal_handler, NULL);
l_dhcp_server_stop(server);
l_dhcp_server_destroy(server);
l_main_exit();
return 0;
}
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