| /* |
| * |
| * Embedded Linux library |
| * |
| * Copyright (C) 2018 Intel Corporation. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| * |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <assert.h> |
| #include <sys/socket.h> |
| #include <linux/if_arp.h> |
| |
| #include <ell/ell.h> |
| |
| static void signal_handler(struct l_signal *signal, uint32_t signo, |
| void *user_data) |
| { |
| switch (signo) { |
| case SIGINT: |
| case SIGTERM: |
| l_info("Terminate"); |
| l_main_quit(); |
| break; |
| } |
| } |
| |
| static void event_handler(struct l_dhcp_client *client, |
| enum l_dhcp_client_event event, |
| void *userdata) |
| { |
| const struct l_dhcp_lease *lease = l_dhcp_client_get_lease(client); |
| char *ip = l_dhcp_lease_get_address(lease); |
| char *netmask = l_dhcp_lease_get_netmask(lease); |
| char *gw = l_dhcp_lease_get_gateway(lease); |
| uint32_t lifetime = l_dhcp_lease_get_lifetime(lease); |
| |
| l_info("Lease Obtained:"); |
| l_info("\tIP: %s, Netmask: %s, Gateway: %s", ip, netmask, gw); |
| l_info("Lifetime: %u seconds", lifetime); |
| |
| l_free(ip); |
| l_free(netmask); |
| l_free(gw); |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| struct l_dhcp_client *client; |
| struct l_signal *signal; |
| sigset_t mask; |
| int ifindex; |
| uint8_t mac[6]; |
| |
| 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; |
| |
| sigemptyset(&mask); |
| sigaddset(&mask, SIGINT); |
| sigaddset(&mask, SIGTERM); |
| signal = l_signal_create(&mask, signal_handler, NULL, NULL); |
| |
| l_log_set_stderr(); |
| l_debug_enable("*"); |
| |
| client = l_dhcp_client_new(ifindex); |
| l_dhcp_client_set_address(client, ARPHRD_ETHER, mac, 6); |
| l_dhcp_client_set_event_handler(client, event_handler, NULL, NULL); |
| l_dhcp_client_start(client); |
| |
| l_main_run(); |
| |
| l_dhcp_client_destroy(client); |
| l_signal_remove(signal); |
| l_main_exit(); |
| |
| return 0; |
| } |