ifchgcb_t *
ifchgcb (cbv cb)
{
if (!lazy) {
if (!myipaddrs (&ifchg_addrs))
fatal ("myipaddrs: %m\n");
lazy = lazycb (60, wrap (ifchgcb_test));
}
ifchgcb_t *chg = New ifchgcb_t (cb);
chglist.insert_head (chg);
return chg;
}
void
ifchgcb_test ()
{
vec<in_addr> newaddrs;
if (!myipaddrs (&newaddrs))
return;
if (newaddrs.size () == ifchg_addrs.size ()
&& !memcmp (newaddrs.base (), ifchg_addrs.base (),
ifchg_addrs.size () * sizeof (in_addr)))
return;
ifchg_addrs.swap (newaddrs);
++ifchg_count;
list<ifchgcb_t, &ifchgcb_t::link> olist;
chglist.swap (olist);
while (ifchgcb_t *chg = olist.first) {
olist.remove (chg);
chglist.insert_head (chg);
(*chg->cb) ();
}
}
chord_hostname
my_addr () {
vec<in_addr> addrs;
if (!myipaddrs (&addrs))
fatal ("my_addr: cannot find my IP address.\n");
in_addr *addr = addrs.base ();
in_addr *loopback = 0;
while (addr < addrs.lim ()) {
if (ntohl (addr->s_addr) == INADDR_LOOPBACK) loopback = addr;
else break;
addr++;
}
if (addr >= addrs.lim () && (loopback == NULL))
fatal ("my_addr: cannot find my IP address.\n");
if (addr >= addrs.lim ()) {
warnx << "my_addr: use loopback address as my address\n";
addr = loopback;
}
str ids = inet_ntoa (*addr);
return ids;
}
