118 lines
3.6 KiB
C
118 lines
3.6 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright (C) 2014 Tom Gundersen <teg@jklm.no>
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <errno.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <linux/veth.h>
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#include <net/if.h>
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#include "sd-event.h"
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#include "sd-ipv4acd.h"
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#include "sd-netlink.h"
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#include "event-util.h"
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#include "in-addr-util.h"
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#include "netlink-util.h"
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#include "util.h"
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static void acd_handler(sd_ipv4acd *acd, int event, void *userdata) {
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assert_se(acd);
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switch (event) {
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case SD_IPV4ACD_EVENT_BIND:
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log_info("bound");
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break;
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case SD_IPV4ACD_EVENT_CONFLICT:
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log_info("conflict");
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break;
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case SD_IPV4ACD_EVENT_STOP:
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log_error("the client was stopped");
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break;
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default:
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assert_not_reached("invalid ACD event");
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}
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}
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static int client_run(int ifindex, const struct in_addr *pa, const struct ether_addr *ha, sd_event *e) {
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sd_ipv4acd *acd;
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assert_se(sd_ipv4acd_new(&acd) >= 0);
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assert_se(sd_ipv4acd_attach_event(acd, e, 0) >= 0);
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assert_se(sd_ipv4acd_set_index(acd, ifindex) >= 0);
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assert_se(sd_ipv4acd_set_mac(acd, ha) >= 0);
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assert_se(sd_ipv4acd_set_address(acd, pa) >= 0);
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assert_se(sd_ipv4acd_set_callback(acd, acd_handler, NULL) >= 0);
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log_info("starting IPv4ACD client");
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assert_se(sd_ipv4acd_start(acd) >= 0);
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assert_se(sd_event_loop(e) >= 0);
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assert_se(!sd_ipv4acd_unref(acd));
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return EXIT_SUCCESS;
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}
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static int test_acd(const char *ifname, const char *address) {
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_cleanup_event_unref_ sd_event *e = NULL;
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_cleanup_netlink_unref_ sd_netlink *rtnl = NULL;
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_cleanup_netlink_message_unref_ sd_netlink_message *m = NULL, *reply = NULL;
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union in_addr_union pa;
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struct ether_addr ha;
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int ifindex;
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assert_se(in_addr_from_string(AF_INET, address, &pa) >= 0);
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assert_se(sd_event_new(&e) >= 0);
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assert_se(sd_netlink_open(&rtnl) >= 0);
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assert_se(sd_netlink_attach_event(rtnl, e, 0) >= 0);
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assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, 0) >= 0);
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assert_se(sd_netlink_message_append_string(m, IFLA_IFNAME, ifname) >= 0);
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assert_se(sd_netlink_call(rtnl, m, 0, &reply) >= 0);
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assert_se(sd_rtnl_message_link_get_ifindex(reply, &ifindex) >= 0);
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assert_se(sd_netlink_message_read_ether_addr(reply, IFLA_ADDRESS, &ha) >= 0);
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client_run(ifindex, &pa.in, &ha, e);
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return EXIT_SUCCESS;
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}
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int main(int argc, char *argv[]) {
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log_set_max_level(LOG_DEBUG);
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log_parse_environment();
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log_open();
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if (argc == 3)
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return test_acd(argv[1], argv[2]);
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else {
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log_error("This program takes two arguments.\n"
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"\t %s <ifname> <IPv4 address>", program_invocation_short_name);
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return EXIT_FAILURE;
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}
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}
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