/*
* Update the MTU on all routes for the given interface
*/
void
route_UpdateMTU(struct bundle *bundle)
{
struct rt_msghdr *rtm;
struct sockaddr *sa[RTAX_MAX];
struct ncprange dst;
size_t needed;
char *sp, *cp, *ep;
int mib[6];
log_Printf(LogDEBUG, "route_UpdateMTU (%d)\n", bundle->iface->index);
mib[0] = CTL_NET;
mib[1] = PF_ROUTE;
mib[2] = 0;
mib[3] = 0;
mib[4] = NET_RT_DUMP;
mib[5] = 0;
if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) {
log_Printf(LogERROR, "route_IfDelete: sysctl: estimate: %s\n",
strerror(errno));
return;
}
sp = malloc(needed);
if (sp == NULL)
return;
if (sysctl(mib, 6, sp, &needed, NULL, 0) < 0) {
log_Printf(LogERROR, "route_IfDelete: sysctl: getroute: %s\n",
strerror(errno));
free(sp);
return;
}
ep = sp + needed;
for (cp = sp; cp < ep; cp += rtm->rtm_msglen) {
rtm = (struct rt_msghdr *)cp;
route_ParseHdr(rtm, sa);
if (sa[RTAX_DST] && (sa[RTAX_DST]->sa_family == AF_INET
#ifndef NOINET6
|| sa[RTAX_DST]->sa_family == AF_INET6
#endif
) &&
sa[RTAX_GATEWAY] && rtm->rtm_index == bundle->iface->index) {
if (log_IsKept(LogTCPIP)) {
ncprange_setsa(&dst, sa[RTAX_DST], sa[RTAX_NETMASK]);
log_Printf(LogTCPIP, "route_UpdateMTU: Netif: %d (%s), dst %s,"
" mtu %lu\n", rtm->rtm_index, Index2Nam(rtm->rtm_index),
ncprange_ntoa(&dst), bundle->iface->mtu);
}
rt_Update(bundle, sa[RTAX_DST], sa[RTAX_GATEWAY], sa[RTAX_NETMASK],
sa[RTAX_IFP], sa[RTAX_IFA]);
}
}
free(sp);
}
int
route_Show(struct cmdargs const *arg)
{
struct rt_msghdr *rtm;
struct sockaddr *sa[RTAX_MAX];
char *sp, *ep, *cp;
size_t needed;
int mib[6];
mib[0] = CTL_NET;
mib[1] = PF_ROUTE;
mib[2] = 0;
mib[3] = 0;
mib[4] = NET_RT_DUMP;
mib[5] = 0;
if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) {
log_Printf(LogERROR, "route_Show: sysctl: estimate: %s\n", strerror(errno));
return (1);
}
sp = malloc(needed);
if (sp == NULL)
return (1);
if (sysctl(mib, 6, sp, &needed, NULL, 0) < 0) {
log_Printf(LogERROR, "route_Show: sysctl: getroute: %s\n", strerror(errno));
free(sp);
return (1);
}
ep = sp + needed;
prompt_Printf(arg->prompt, "%-20s%-20sFlags Netif\n",
"Destination", "Gateway");
for (cp = sp; cp < ep; cp += rtm->rtm_msglen) {
rtm = (struct rt_msghdr *)cp;
route_ParseHdr(rtm, sa);
if (sa[RTAX_DST] && sa[RTAX_GATEWAY]) {
p_sockaddr(arg->prompt, sa[RTAX_DST], sa[RTAX_NETMASK], 20);
p_sockaddr(arg->prompt, sa[RTAX_GATEWAY], NULL, 20);
p_flags(arg->prompt, rtm->rtm_flags, 6);
prompt_Printf(arg->prompt, " %s\n", Index2Nam(rtm->rtm_index));
} else
prompt_Printf(arg->prompt, "<can't parse routing entry>\n");
}
free(sp);
return 0;
}
/*
* Delete routes associated with our interface
*/
void
route_IfDelete(struct bundle *bundle, int all)
{
struct rt_msghdr *rtm;
struct sockaddr *sa[RTAX_MAX];
struct ncprange range;
int pass;
size_t needed;
char *sp, *cp, *ep;
int mib[6];
log_Printf(LogDEBUG, "route_IfDelete (%d)\n", bundle->iface->index);
mib[0] = CTL_NET;
mib[1] = PF_ROUTE;
mib[2] = 0;
mib[3] = 0;
mib[4] = NET_RT_DUMP;
mib[5] = 0;
if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) {
log_Printf(LogERROR, "route_IfDelete: sysctl: estimate: %s\n",
strerror(errno));
return;
}
sp = malloc(needed);
if (sp == NULL)
return;
if (sysctl(mib, 6, sp, &needed, NULL, 0) < 0) {
log_Printf(LogERROR, "route_IfDelete: sysctl: getroute: %s\n",
strerror(errno));
free(sp);
return;
}
ep = sp + needed;
for (pass = 0; pass < 2; pass++) {
/*
* We do 2 passes. The first deletes all cloned routes. The second
* deletes all non-cloned routes. This is done to avoid
* potential errors from trying to delete route X after route Y where
* route X was cloned from route Y (and is no longer there 'cos it
* may have gone with route Y).
*/
if (RTF_WASCLONED == 0 && pass == 0)
/* So we can't tell ! */
continue;
for (cp = sp; cp < ep; cp += rtm->rtm_msglen) {
rtm = (struct rt_msghdr *)cp;
route_ParseHdr(rtm, sa);
if (rtm->rtm_index == bundle->iface->index &&
sa[RTAX_DST] && sa[RTAX_GATEWAY] &&
(sa[RTAX_DST]->sa_family == AF_INET
#ifndef NOINET6
|| sa[RTAX_DST]->sa_family == AF_INET6
#endif
) &&
(all || (rtm->rtm_flags & RTF_GATEWAY))) {
if (log_IsKept(LogDEBUG)) {
char gwstr[41];
struct ncpaddr gw;
ncprange_setsa(&range, sa[RTAX_DST], sa[RTAX_NETMASK]);
ncpaddr_setsa(&gw, sa[RTAX_GATEWAY]);
snprintf(gwstr, sizeof gwstr, "%s", ncpaddr_ntoa(&gw));
log_Printf(LogDEBUG, "Found %s %s\n", ncprange_ntoa(&range), gwstr);
}
if (sa[RTAX_GATEWAY]->sa_family == AF_INET ||
#ifndef NOINET6
sa[RTAX_GATEWAY]->sa_family == AF_INET6 ||
#endif
sa[RTAX_GATEWAY]->sa_family == AF_LINK) {
if ((pass == 0 && (rtm->rtm_flags & RTF_WASCLONED)) ||
(pass == 1 && !(rtm->rtm_flags & RTF_WASCLONED))) {
ncprange_setsa(&range, sa[RTAX_DST], sa[RTAX_NETMASK]);
rt_Set(bundle, RTM_DELETE, &range, NULL, 0, 0);
} else
log_Printf(LogDEBUG, "route_IfDelete: Skip it (pass %d)\n", pass);
} else
log_Printf(LogDEBUG,
"route_IfDelete: Can't remove routes for family %d\n",
sa[RTAX_GATEWAY]->sa_family);
}
}
}
free(sp);
}
