static G_GNUC_HOT int
iprange_net4_cmp(const void *p, const void *q)
{
const struct iprange_net4 *a = p, *b = q;
uint32 mask, a_key, b_key;
mask = cidr_to_netmask(a->bits) & cidr_to_netmask(b->bits);
a_key = a->ip & mask;
b_key = b->ip & mask;
return CMP(a_key, b_key);
}
/**
* Add CIDR IPv4 network to the database.
*
* @param db the IP range database
* @param net the IPv4 network prefix
* @param bits the amount of bits in the network prefix
* @param value value associated to this IP network (must be non-zero)
*
* @return IPR_ERR_OK if successful, an error code otherwise.
*/
iprange_err_t
iprange_add_cidr(struct iprange_db *idb,
uint32 net, unsigned bits, uint16 value)
{
struct iprange_net4 item;
uint32 mask;
iprange_db_check(idb);
g_assert(value != 0);
g_return_val_if_fail(bits > 0, IPR_ERR_BAD_PREFIX);
g_return_val_if_fail(bits <= 32, IPR_ERR_BAD_PREFIX);
item.ip = net;
item.value = value;
item.bits = bits;
mask = cidr_to_netmask(bits);
if ((item.ip & mask) != item.ip) {
return IPR_ERR_BAD_PREFIX;
} else {
sorted_array_add(idb->tab4, &item);
idb->tab4_unsorted = TRUE;
return IPR_ERR_OK;
}
}
/**
* Retrieve value associated with an IPv4 address, i.e. that of the range
* containing it.
*
* @param db the IP range database
* @param ip the IPv4 address to lookup
* @return The data associated with the IPv address or NULL if not found.
*/
void *
iprange_get(const struct iprange_db *idb, guint32 ip)
{
struct iprange_net key, *item;
iprange_db_check(idb);
key.ip = ip;
key.mask = cidr_to_netmask(32);
item = sorted_array_lookup(idb->tab, &key);
return item ? item->value : NULL;
}
/**
* Add CIDR network to the database.
*
* @param db the IP range database
* @param net the network prefix
* @param bits the amount of bits in the network prefix
* @param value value associated to this IP network
*
* @return IPR_ERR_OK if successful, an error code otherwise.
*/
iprange_err_t
iprange_add_cidr(struct iprange_db *idb,
guint32 net, guint bits, void *value)
{
struct iprange_net item;
iprange_db_check(idb);
g_return_val_if_fail(bits > 0, IPR_ERR_BAD_PREFIX);
g_return_val_if_fail(bits <= 32, IPR_ERR_BAD_PREFIX);
item.ip = net;
item.mask = cidr_to_netmask(bits);
item.value = value;
if ((item.ip & item.mask) != item.ip) {
return IPR_ERR_BAD_PREFIX;
} else {
sorted_array_add(idb->tab, &item);
return IPR_ERR_OK;
}
}
