static void
find_one_address (struct nl_object *object, void *user_data)
{
FindAddrInfo *info = user_data;
struct rtnl_addr *addr = (struct rtnl_addr *) object;
struct nl_addr *local;
void *binaddr;
if (info->found)
return;
if (rtnl_addr_get_ifindex (addr) != info->ifindex)
return;
if (rtnl_addr_get_family (addr) != info->family)
return;
if (rtnl_addr_get_prefixlen (addr) != info->prefix)
return;
local = rtnl_addr_get_local (addr);
if (nl_addr_get_family (local) != info->family)
return;
if (nl_addr_get_len (local) != info->addrlen)
return;
binaddr = nl_addr_get_binary_addr (local);
if (binaddr) {
if (memcmp (binaddr, info->addr, info->addrlen) == 0)
info->found = TRUE; /* Yay, found it */
}
}
static void get_ip(struct nl_object *obj, void *arg)
{
struct rtnl_addr * addr = (struct rtnl_addr *) obj;
struct nl_addr *naddr = rtnl_addr_get_local(addr);
int prefixlen = rtnl_addr_get_prefixlen(addr);
if ((NULL != naddr) && (prefixlen == *(int*)(arg)))
printf("ip is 0x%x\n", *(uint32_t *) (nl_addr_get_binary_addr(naddr)));
}
static void
check_addresses (NMIP6Device *device)
{
NMIP6Manager *manager = device->manager;
NMIP6ManagerPrivate *priv = NM_IP6_MANAGER_GET_PRIVATE (manager);
struct rtnl_addr *rtnladdr;
struct nl_addr *nladdr;
struct in6_addr *addr;
/* Reset address information */
device->has_linklocal = FALSE;
device->has_nonlinklocal = FALSE;
/* Look for any IPv6 addresses the kernel may have set for the device */
for (rtnladdr = (struct rtnl_addr *) nl_cache_get_first (priv->addr_cache);
rtnladdr;
rtnladdr = (struct rtnl_addr *) nl_cache_get_next ((struct nl_object *) rtnladdr)) {
char buf[INET6_ADDRSTRLEN];
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);
if (inet_ntop (AF_INET6, addr, buf, INET6_ADDRSTRLEN) > 0) {
nm_log_dbg (LOGD_IP6, "(%s): netlink address: %s/%d",
device->iface, buf,
rtnl_addr_get_prefixlen (rtnladdr));
}
if (IN6_IS_ADDR_LINKLOCAL (addr)) {
if (device->state == NM_IP6_DEVICE_UNCONFIGURED)
device_set_state (device, NM_IP6_DEVICE_GOT_LINK_LOCAL);
device->has_linklocal = TRUE;
} else {
if (device->state == NM_IP6_DEVICE_GOT_ROUTER_ADVERTISEMENT)
device_set_state (device, NM_IP6_DEVICE_GOT_ADDRESS);
device->has_nonlinklocal = TRUE;
}
}
/* There might be a LL address hanging around on the interface from
* before in the initial run, but if it goes away later, make sure we
* regress from GOT_LINK_LOCAL back to UNCONFIGURED.
*/
if ((device->state == NM_IP6_DEVICE_GOT_LINK_LOCAL) && !device->has_linklocal)
device_set_state (device, NM_IP6_DEVICE_UNCONFIGURED);
nm_log_dbg (LOGD_IP6, "(%s): addresses checked (state %s)",
device->iface, state_to_string (device->state));
}
/**
* libnl callback function. Does the real parsing of a record returned by NETLINK. This function
* parses ADDRESS related packets
*
* @param obj Pointer to a struct nl_object response
* @param arg Pointer to a struct etherinfo element where the parse result will be saved
*/
static void callback_nl_address(struct nl_object *obj, void *arg)
{
struct etherinfo *ethi = (struct etherinfo *) arg;
struct nl_addr *addr;
char ip_str[66];
int family;
if( ethi == NULL ) {
return;
}
addr = rtnl_addr_get_local((struct rtnl_addr *)obj);
family = nl_addr_get_family(addr);
switch( family ) {
case AF_INET:
case AF_INET6:
memset(&ip_str, 0, 66);
inet_ntop(family, nl_addr_get_binary_addr(addr), (char *)&ip_str, 64);
if( family == AF_INET ) {
struct nl_addr *brdcst = rtnl_addr_get_broadcast((struct rtnl_addr *)obj);
char brdcst_str[66];
SET_STR_VALUE(ethi->ipv4_address, ip_str);
ethi->ipv4_netmask = rtnl_addr_get_prefixlen((struct rtnl_addr*) obj);
if( brdcst ) {
memset(&brdcst_str, 0, 66);
inet_ntop(family, nl_addr_get_binary_addr(brdcst), (char *)&brdcst_str, 64);
SET_STR_VALUE(ethi->ipv4_broadcast, brdcst_str);
}
} else {
ethi->ipv6_addresses = etherinfo_add_ipv6(ethi->ipv6_addresses,
ip_str,
rtnl_addr_get_prefixlen((struct rtnl_addr*) obj),
rtnl_addr_get_scope((struct rtnl_addr*) obj));
}
return;
default:
return;
}
}
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;
}
