NMIP6Config *
nm_ip6_manager_get_ip6_config (NMIP6Manager *manager, int ifindex)
{
NMIP6ManagerPrivate *priv;
NMIP6Device *device;
NMIP6Config *config;
struct rtnl_addr *rtnladdr;
struct nl_addr *nladdr;
struct in6_addr *addr;
NMIP6Address *ip6addr;
struct rtnl_route *rtnlroute;
struct nl_addr *nldest, *nlgateway;
struct in6_addr *dest, *gateway;
gboolean defgw_set = FALSE;
struct in6_addr defgw;
uint32_t metric;
NMIP6Route *ip6route;
int i;
g_return_val_if_fail (NM_IS_IP6_MANAGER (manager), NULL);
g_return_val_if_fail (ifindex > 0, NULL);
priv = NM_IP6_MANAGER_GET_PRIVATE (manager);
device = (NMIP6Device *) g_hash_table_lookup (priv->devices,
GINT_TO_POINTER (ifindex));
if (!device) {
nm_log_warn (LOGD_IP6, "(%d): addrconf not started.", ifindex);
return NULL;
}
config = nm_ip6_config_new ();
if (!config) {
nm_log_err (LOGD_IP6, "(%s): out of memory creating IP6 config object.",
device->iface);
return NULL;
}
/* Make sure we refill the route and address caches, otherwise we won't get
* up-to-date information here since the netlink route/addr change messages
* may be lagging a bit.
*/
nl_cache_refill (priv->nlh, priv->route_cache);
nl_cache_refill (priv->nlh, priv->addr_cache);
/* Add routes */
for (rtnlroute = FIRST_ROUTE (priv->route_cache); rtnlroute; rtnlroute = NEXT_ROUTE (rtnlroute)) {
/* Make sure it's an IPv6 route for this device */
if (rtnl_route_get_oif (rtnlroute) != device->ifindex)
continue;
if (rtnl_route_get_family (rtnlroute) != AF_INET6)
continue;
nldest = rtnl_route_get_dst (rtnlroute);
if (!nldest || nl_addr_get_family (nldest) != AF_INET6)
continue;
dest = nl_addr_get_binary_addr (nldest);
nlgateway = rtnl_route_get_gateway (rtnlroute);
if (!nlgateway || nl_addr_get_family (nlgateway) != AF_INET6)
continue;
gateway = nl_addr_get_binary_addr (nlgateway);
if (rtnl_route_get_dst_len (rtnlroute) == 0) {
/* Default gateway route; don't add to normal routes but to each address */
if (!defgw_set) {
memcpy (&defgw, gateway, sizeof (defgw));
defgw_set = TRUE;
}
continue;
}
/* Also ignore link-local routes where the destination and gateway are
* the same, which apparently get added by the kernel but return -EINVAL
* when we try to add them via netlink.
*/
if (gateway && IN6_ARE_ADDR_EQUAL (dest, gateway))
continue;
ip6route = nm_ip6_route_new ();
nm_ip6_route_set_dest (ip6route, dest);
nm_ip6_route_set_prefix (ip6route, rtnl_route_get_dst_len (rtnlroute));
nm_ip6_route_set_next_hop (ip6route, gateway);
rtnl_route_get_metric(rtnlroute, 1, &metric);
if (metric != UINT_MAX)
nm_ip6_route_set_metric (ip6route, metric);
nm_ip6_config_take_route (config, ip6route);
}
/* Add addresses */
for (rtnladdr = FIRST_ADDR (priv->addr_cache); rtnladdr; rtnladdr = NEXT_ADDR (rtnladdr)) {
if (rtnl_addr_get_ifindex (rtnladdr) != device->ifindex)
continue;
nladdr = rtnl_addr_get_local (rtnladdr);
if (!nladdr || nl_addr_get_family (nladdr) != AF_INET6)
continue;
addr = nl_addr_get_binary_addr (nladdr);
ip6addr = nm_ip6_address_new ();
nm_ip6_address_set_prefix (ip6addr, rtnl_addr_get_prefixlen (rtnladdr));
nm_ip6_address_set_address (ip6addr, addr);
nm_ip6_config_take_address (config, ip6addr);
if (defgw_set)
nm_ip6_address_set_gateway (ip6addr, &defgw);
}
/* Add DNS servers */
if (device->rdnss_servers) {
NMIP6RDNSS *rdnss = (NMIP6RDNSS *)(device->rdnss_servers->data);
for (i = 0; i < device->rdnss_servers->len; i++)
nm_ip6_config_add_nameserver (config, &rdnss[i].addr);
}
/* Add DNS domains */
if (device->dnssl_domains) {
NMIP6DNSSL *dnssl = (NMIP6DNSSL *)(device->dnssl_domains->data);
for (i = 0; i < device->dnssl_domains->len; i++)
nm_ip6_config_add_domain (config, dnssl[i].domain);
}
return config;
}
static void route_proc_cb(struct nl_object *c, void *arg)
{
struct ip_lookup_res *res = (struct ip_lookup_res*) arg;
struct rtnl_route *route = (struct rtnl_route *) c;
struct nl_cache *link_cache;
struct nl_addr *addr;
struct rtnl_nexthop *nh;
int prefix_len;
int oif;
char buf[64];
link_cache = nl_cache_mngt_require("route/link");
addr = rtnl_route_get_dst(route);
if (addr) {
printf("%s", nl_addr2str(addr, buf, sizeof(buf)));
res->dstaddr = *(uint32_t *) nl_addr_get_binary_addr(addr);
}
prefix_len = rtnl_route_get_dst_len(route);
if (prefix_len)
printf("/%d ", prefix_len);
else
printf("default ");
addr = rtnl_route_get_src(route);
if (addr)
printf("src %s ", nl_addr2str(addr, buf, sizeof(buf)));
addr = rtnl_route_get_pref_src(route);
if (addr)
printf("preferred src %s ", nl_addr2str(addr, buf, sizeof(buf)));
addr = rtnl_route_get_gateway(route);
if (addr) {
printf("via %s ", nl_addr2str(addr, buf, sizeof(buf)));
res->nh_addr = *(uint32_t*) nl_addr_get_binary_addr(addr);
}
else {
res->nh_addr = 0;
}
oif = rtnl_route_get_oif(route);
res->oif = oif;
if (oif != RTNL_LINK_NOT_FOUND && link_cache) {
printf("dev %s ", rtnl_link_i2name(link_cache, oif,
buf, sizeof(buf)));
rtnl_link_i2name(link_cache, oif, res->oifname, sizeof(res->oifname));
}
/* Declaration of rtnl_route_nh_get_gateway() is missing from
* include/netlink/route/nexthop.h, there is no way to inspect
* each nexthop for gateway information, will just use gateway
* info stored in rtnl_route struct. The probem is only present
* libnl 1 */
/*
nl_list_for_each_entry(nh, rtnl_route_get_nexthops(route), rtnh_list) {
}
*/
printf("\n");
}
