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/*
* This program manages IPv6 address with OCF Resource Agent standard.
*
* Author: Huang Zhen <zhenh@cn.ibm.com>
* Copyright (c) 2004 International Business Machines
*
* This library is free software; you can redistribute it 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.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <IPv6addr.h>
#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
#include <unistd.h>
#include <sys/socket.h>
#include <arpa/inet.h> /* for inet_pton */
#include <net/if.h> /* for if_nametoindex */
#include <sys/ioctl.h>
#include <fcntl.h>
#include <signal.h>
#include <errno.h>
static void usage_send_ua(const char* self);
static void byebye(int nsig);
int
main(int argc, char* argv[])
{
char* ipv6addr;
int count = UA_REPEAT_COUNT;
int interval = 1000; /* default 1000 msec */
int ch;
int i;
char* cp;
char* prov_ifname = NULL;
struct in6_addr addr6;
struct sigaction act;
/* Check binary name */
if (argc < 4) {
usage_send_ua(argv[0]);
return OCF_ERR_ARGS;
}
while ((ch = getopt(argc, argv, "h?c:i:")) != EOF) {
switch(ch) {
case 'c': /* count option */
count = atoi(optarg);
break;
case 'i': /* interval option */
interval = atoi(optarg);
break;
case 'h':
case '?':
default:
usage_send_ua(argv[0]);
return OCF_ERR_ARGS;
}
}
/* set termination signal */
memset(&act, 0, sizeof(struct sigaction));
act.sa_flags &= ~SA_RESTART; /* redundant - to stress syscalls should fail */
act.sa_handler = byebye;
if ((sigemptyset(&act.sa_mask) < 0) || (sigaction(SIGTERM, &act, NULL) < 0)) {
printf("ERROR: Could not set handler for signal: %s", strerror(errno));
return OCF_ERR_GENERIC;
}
ipv6addr = argv[optind];
if (ipv6addr == NULL) {
printf("ERROR: Please set OCF_RESKEY_ipv6addr to the IPv6 address you want to manage.");
usage_send_ua(argv[0]);
return OCF_ERR_ARGS;
}
/* legacy option */
if ((cp = strchr(ipv6addr, '/'))) {
*cp=0;
}
prov_ifname = argv[optind+2];
if (inet_pton(AF_INET6, ipv6addr, &addr6) <= 0) {
printf("ERROR: Invalid IPv6 address [%s]", ipv6addr);
usage_send_ua(argv[0]);
return OCF_ERR_ARGS;
}
/* Check whether this system supports IPv6 */
if (access(IF_INET6, R_OK)) {
printf("ERROR: No support for INET6 on this system.");
return OCF_ERR_GENERIC;
}
/* Send unsolicited advertisement packet to neighbor */
for (i = 0; i < count; i++) {
send_ua(&addr6, prov_ifname);
usleep(interval * 1000);
}
return OCF_SUCCESS;
}
static void usage_send_ua(const char* self)
{
printf("usage: %s [-i[=Interval]] [-c[=Count]] [-h] IPv6-Address Prefix Interface\n",self);
return;
}
/* Following code is copied from send_arp.c, linux-HA project. */
void
byebye(int nsig)
{
(void)nsig;
/* Avoid an "error exit" log message if we're killed */
exit(0);
}
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