int push_swap(int *l_a, int count)
{
int pos_min;
int ra_count;
ra_count = 0;
pos_min = find_lowest_number(l_a, count);
while (ra_count <= pos_min)
{
rotate(l_a, count);
ra_count++;
}
print_ra(pos_min);
if (count == 0)
return (0);
write(1, "pb ", 3);
push_swap(l_a, count - 1);
return (0);
}
int
main(int argc, char *argv[])
{
unsigned char msg[MSG_SIZE];
int c, len, hoplimit;
int fform = 0;
int edefs = 0;
struct sockaddr_in6 rcv_addr;
struct in6_pktinfo *pkt_info = NULL;
#ifdef HAVE_GETOPT_LONG
int opt_idx;
#endif
pname = ((pname=strrchr(argv[0],'/')) != NULL)?pname+1:argv[0];
/* parse args */
#ifdef HAVE_GETOPT_LONG
while ((c = getopt_long(argc, argv, "d:fehv", prog_opt, &opt_idx)) > 0)
#else
while ((c = getopt(argc, argv, "d:fehv")) > 0)
#endif
{
switch (c) {
case 'd':
set_debuglevel(atoi(optarg));
break;
case 'f':
fform = 1;
break;
case 'e':
edefs = 1;
break;
case 'v':
version();
break;
case 'h':
usage();
#ifdef HAVE_GETOPT_LONG
case ':':
fprintf(stderr, "%s: option %s: parameter expected\n", pname,
prog_opt[opt_idx].name);
exit(1);
#endif
case '?':
exit(1);
}
}
if (log_open(L_STDERR, pname, NULL, 0) < 0)
exit(1);
/* get a raw socket for sending and receiving ICMPv6 messages */
sock = open_icmpv6_socket();
if (sock < 0)
exit(1);
for(;;)
{
len = recv_rs_ra(sock, msg, &rcv_addr, &pkt_info, &hoplimit);
if (len > 0)
{
struct icmp6_hdr *icmph;
/*
* can this happen?
*/
if (len < sizeof(struct icmp6_hdr))
{
log(LOG_WARNING, "received icmpv6 packet with invalid length: %d",
len);
exit(1);
}
icmph = (struct icmp6_hdr *) msg;
if (icmph->icmp6_type != ND_ROUTER_SOLICIT &&
icmph->icmp6_type != ND_ROUTER_ADVERT)
{
/*
* We just want to listen to RSs and RAs
*/
log(LOG_ERR, "icmpv6 filter failed");
exit(1);
}
dlog(LOG_DEBUG, 4, "receiver if_index: %d", pkt_info->ipi6_ifindex);
if (icmph->icmp6_type == ND_ROUTER_SOLICIT)
{
/* not yet */
}
else if (icmph->icmp6_type == ND_ROUTER_ADVERT)
{
if (!fform)
print_ra(msg, len, &rcv_addr, hoplimit, pkt_info->ipi6_ifindex);
else
print_ff(msg, len, &rcv_addr, hoplimit, pkt_info->ipi6_ifindex, edefs);
}
}
else if (len == 0)
{
log(LOG_ERR, "received zero lenght packet");
exit(1);
}
else
{
log(LOG_ERR, "recv_rs_ra: %s", strerror(errno));
exit(1);
}
}
exit(0);
}
