void
trace_if(const char *act,
struct interface *ifp)
{
if (!TRACEACTIONS || ftrace == 0)
return;
lastlog();
(void)fprintf(ftrace, "%-3s interface %-4s ", act, ifp->int_name);
(void)fprintf(ftrace, "%-15s-->%-15s ",
naddr_ntoa(ifp->int_addr),
addrname(((ifp->int_if_flags & IFF_POINTOPOINT)
? ifp->int_dstaddr
: htonl(ifp->int_net)),
ifp->int_mask, 1));
if (ifp->int_metric != 0)
(void)fprintf(ftrace, "metric=%d ", ifp->int_metric);
if (ifp->int_adj_inmetric != 0)
(void)fprintf(ftrace, "adj_inmetric=%u ",
ifp->int_adj_inmetric);
if (ifp->int_adj_outmetric != 0)
(void)fprintf(ftrace, "adj_outmetric=%u ",
ifp->int_adj_outmetric);
if (!IS_RIP_OUT_OFF(ifp->int_state)
&& ifp->int_d_metric != 0)
(void)fprintf(ftrace, "fake_default=%u ", ifp->int_d_metric);
trace_bits(if_bits, ifp->int_if_flags, 0);
trace_bits(is_bits, ifp->int_state, 0);
(void)fputc('\n',ftrace);
}
char *
rtname(naddr dst,
naddr mask,
naddr gate)
{
static char buf[3*4+3+1+2+3 /* "xxx.xxx.xxx.xxx/xx-->" */
+3*4+3+1]; /* "xxx.xxx.xxx.xxx" */
int i;
i = sprintf(buf, "%-16s-->", addrname(dst, mask, 0));
sprintf(&buf[i], "%-*s", 15+20-MAX(20,i), naddr_ntoa(gate));
return buf;
}
char *
rtname(in_addr_t dst,
in_addr_t mask,
in_addr_t gate)
{
static char buf[sizeof ("xxx.xxx.xxx.xxx/xx-->xxx.xxx.xxx.xxx")];
int i;
(void) snprintf(buf, sizeof (buf), "%-16s-->", addrname(dst, mask, 0));
i = strlen(buf);
(void) snprintf(&buf[i], (sizeof (buf) -i), "%-*s", 15+24-MAX(24, i),
naddr_ntoa(gate));
return (buf);
}
void
trace_khash(const struct khash *krt)
{
if (ftrace == NULL)
return;
lastlog();
(void) fprintf(ftrace, " %-15s-->%-15s metric=%d ",
addrname(krt->k_dst, krt->k_mask, 0),
naddr_ntoa(krt->k_gate), krt->k_metric);
if (krt->k_ifp != NULL)
(void) fprintf(ftrace, "ifp %s ", krt->k_ifp->int_name);
else
(void) fprintf(ftrace, "ifp NULL ");
(void) fprintf(ftrace, "%s ", ts(krt->k_keep));
(void) fprintf(ftrace, "%s ", ts(krt->k_redirect_time));
trace_bits(ks_bits, krt->k_state, _B_TRUE);
(void) fputc('\n', ftrace);
}
/* put an entry into the packet
*/
static void
supply_out(struct ag_info *ag)
{
int i;
naddr mask, v1_mask, dst_h, ddst_h = 0;
struct ws_buf *wb;
/* Skip this route if doing a flash update and it and the routes
* it aggregates have not changed recently.
*/
if (ag->ag_seqno < update_seqno
&& (ws.state & WS_ST_FLASH))
return;
dst_h = ag->ag_dst_h;
mask = ag->ag_mask;
v1_mask = ripv1_mask_host(htonl(dst_h),
(ws.state & WS_ST_TO_ON_NET) ? ws.ifp : 0);
i = 0;
/* If we are sending RIPv2 packets that cannot (or must not) be
* heard by RIPv1 listeners, do not worry about sub- or supernets.
* Subnets (from other networks) can only be sent via multicast.
* A pair of subnet routes might have been promoted so that they
* are legal to send by RIPv1.
* If RIPv1 is off, use the multicast buffer.
*/
if ((ws.state & WS_ST_RIP2_ALL)
|| ((ag->ag_state & AGS_RIPV2) && v1_mask != mask)) {
/* use the RIPv2-only buffer */
wb = &v2buf;
} else {
/* use the RIPv1-or-RIPv2 buffer */
wb = &v12buf;
/* Convert supernet route into corresponding set of network
* routes for RIPv1, but leave non-contiguous netmasks
* to ag_check().
*/
if (v1_mask > mask
&& mask + (mask & -mask) == 0) {
ddst_h = v1_mask & -v1_mask;
i = (v1_mask & ~mask)/ddst_h;
if (i > ws.gen_limit) {
/* Punt if we would have to generate an
* unreasonable number of routes.
*/
if (TRACECONTENTS)
trace_misc("sending %s-->%s as 1"
" instead of %d routes",
addrname(htonl(dst_h), mask,
1),
naddr_ntoa(ws.to.sin_addr
.s_addr),
i+1);
i = 0;
} else {
mask = v1_mask;
ws.gen_limit -= i;
}
}
}
do {
wb->n->n_family = RIP_AF_INET;
wb->n->n_dst = htonl(dst_h);
/* If the route is from router-discovery or we are
* shutting down, admit only a bad metric.
*/
wb->n->n_metric = ((stopint || ag->ag_metric < 1)
? HOPCNT_INFINITY
: ag->ag_metric);
wb->n->n_metric = htonl(wb->n->n_metric);
/* Any non-zero bits in the supposedly unused RIPv1 fields
* cause the old `routed` to ignore the route.
* That means the mask and so forth cannot be sent
* in the hybrid RIPv1/RIPv2 mode.
*/
if (ws.state & WS_ST_RIP2_ALL) {
if (ag->ag_nhop != 0
&& ((ws.state & WS_ST_QUERY)
|| (ag->ag_nhop != ws.ifp->int_addr
&& on_net(ag->ag_nhop,
ws.ifp->int_net,
ws.ifp->int_mask))))
wb->n->n_nhop = ag->ag_nhop;
wb->n->n_mask = htonl(mask);
wb->n->n_tag = ag->ag_tag;
}
dst_h += ddst_h;
if (++wb->n >= wb->lim)
supply_write(wb);
} while (i-- != 0);
}