int
route_add(route_t *route, const struct route_entry *entry)
{
MIB_IPFORWARDROW ipfrow;
struct addr net;
memset(&ipfrow, 0, sizeof(ipfrow));
if (GetBestInterface(entry->route_gw.addr_ip,
&ipfrow.dwForwardIfIndex) != NO_ERROR)
return (-1);
if (addr_net(&entry->route_dst, &net) < 0 ||
net.addr_type != ADDR_TYPE_IP)
return (-1);
ipfrow.dwForwardDest = net.addr_ip;
addr_btom(entry->route_dst.addr_bits,
&ipfrow.dwForwardMask, IP_ADDR_LEN);
ipfrow.dwForwardNextHop = entry->route_gw.addr_ip;
ipfrow.dwForwardType = 4; /* XXX - next hop != final dest */
ipfrow.dwForwardProto = 3; /* XXX - MIB_PROTO_NETMGMT */
if (CreateIpForwardEntry(&ipfrow) != NO_ERROR)
return (-1);
return (0);
}
int
route_delete(route_t *r, const struct route_entry *entry)
{
struct rtentry rt;
struct addr dst;
memset(&rt, 0, sizeof(rt));
rt.rt_flags = RTF_UP;
if (ADDR_ISHOST(&entry->route_dst)) {
rt.rt_flags |= RTF_HOST;
memcpy(&dst, &entry->route_dst, sizeof(dst));
} else
addr_net(&entry->route_dst, &dst);
if (addr_ntos(&dst, &rt.rt_dst) < 0 ||
addr_btos(entry->route_dst.addr_bits, &rt.rt_genmask) < 0)
return (-1);
return (ioctl(r->fd, SIOCDELRT, &rt));
}
static int
route_msg(route_t *r, int type, struct addr *dst, struct addr *gw)
{
struct addr net;
struct rt_msghdr *rtm;
struct sockaddr *sa;
u_char buf[BUFSIZ];
pid_t pid;
int len;
memset(buf, 0, sizeof(buf));
rtm = (struct rt_msghdr *)buf;
rtm->rtm_version = RTM_VERSION;
if ((rtm->rtm_type = type) != RTM_DELETE)
rtm->rtm_flags = RTF_UP;
rtm->rtm_addrs = RTA_DST;
rtm->rtm_seq = ++r->seq;
/* Destination */
sa = (struct sockaddr *)(rtm + 1);
if (addr_net(dst, &net) < 0 || addr_ntos(&net, sa) < 0)
return (-1);
sa = NEXTSA(sa);
/* Gateway */
if (gw != NULL && type != RTM_GET) {
rtm->rtm_flags |= RTF_GATEWAY;
rtm->rtm_addrs |= RTA_GATEWAY;
if (addr_ntos(gw, sa) < 0)
return (-1);
sa = NEXTSA(sa);
}
/* Netmask */
if (dst->addr_ip == IP_ADDR_ANY || dst->addr_bits < IP_ADDR_BITS) {
rtm->rtm_addrs |= RTA_NETMASK;
if (addr_btos(dst->addr_bits, sa) < 0)
return (-1);
sa = NEXTSA(sa);
} else
rtm->rtm_flags |= RTF_HOST;
rtm->rtm_msglen = (u_char *)sa - buf;
#ifdef DEBUG
route_msg_print(rtm);
#endif
#ifdef HAVE_STREAMS_ROUTE
if (ioctl(r->fd, RTSTR_SEND, rtm) < 0)
return (-1);
#else
if (write(r->fd, buf, rtm->rtm_msglen) < 0)
return (-1);
pid = getpid();
while (type == RTM_GET && (len = read(r->fd, buf, sizeof(buf))) > 0) {
if (len < (int)sizeof(*rtm)) {
return (-1);
}
if (rtm->rtm_type == type && rtm->rtm_pid == pid &&
rtm->rtm_seq == r->seq) {
if (rtm->rtm_errno) {
errno = rtm->rtm_errno;
return (-1);
}
break;
}
}
#endif
if (type == RTM_GET && (rtm->rtm_addrs & (RTA_DST|RTA_GATEWAY)) ==
(RTA_DST|RTA_GATEWAY)) {
sa = (struct sockaddr *)(rtm + 1);
sa = NEXTSA(sa);
if (addr_ston(sa, gw) < 0 || gw->addr_type != ADDR_TYPE_IP) {
errno = ESRCH;
return (-1);
}
}
return (0);
}
