/**
* Handle reception of a /LNI
*/
static void
g2_node_handle_lni(gnutella_node_t *n, const g2_tree_t *t)
{
g2_tree_t *c;
/*
* Handle the children of /LNI.
*/
G2_TREE_CHILD_FOREACH(t, c) {
enum g2_lni_child ct = TOKENIZE(g2_tree_name(c), g2_lni_children);
const char *payload;
size_t paylen;
switch (ct) {
case G2_LNI_GU: /* the node's GUID */
payload = g2_tree_node_payload(c, &paylen);
if (GUID_RAW_SIZE == paylen)
node_set_guid(n, (guid_t *) payload, TRUE);
break;
case G2_LNI_NA: /* the node's address, with listening port */
{
host_addr_t addr;
uint16 port;
if (g2_node_parse_address(c, &addr, &port)) {
if (host_address_is_usable(addr))
n->gnet_addr = addr;
n->gnet_port = port;
}
}
break;
case G2_LNI_LS: /* library statistics */
payload = g2_tree_node_payload(c, &paylen);
if (paylen >= 8) {
uint32 files = peek_le32(payload);
uint32 kbytes = peek_le32(&payload[4]);
n->gnet_files_count = files;
n->gnet_kbytes_count = kbytes;
n->flags |= NODE_F_SHARED_INFO;
}
break;
case G2_LNI_V: /* vendor code */
payload = g2_tree_node_payload(c, &paylen);
if (paylen >= 4)
n->vcode.u32 = peek_be32(payload);
break;
case G2_LNI_UP: /* uptime */
payload = g2_tree_node_payload(c, &paylen);
if (paylen <= 4)
n->up_date = tm_time() - vlint_decode(payload, paylen);
break;
}
}
}
/**
* Check whether host is connectible.
*
* i.e. that it has a valid port and that its IP address is not private
* nor bogus.
*/
gboolean
host_is_valid(const host_addr_t addr, guint16 port)
{
if (!port_is_valid(port))
return FALSE;
return host_address_is_usable(addr);
}
/**
* @return whether host's address is a valid DHT value creator.
*/
bool
knode_addr_is_usable(const knode_t *kn)
{
knode_check(kn);
if (!host_address_is_usable(kn->addr))
return FALSE;
if (hostiles_is_bad(kn->addr))
return FALSE;
return TRUE;
}
