struct bt_keys *bt_keys_get_type(int type, const bt_addr_le_t *addr)
{
struct bt_keys *keys;
BT_DBG("type %d %s", type, bt_addr_le_str(addr));
keys = bt_keys_find(type, addr);
if (keys) {
return keys;
}
keys = bt_keys_get_addr(addr);
if (!keys) {
return NULL;
}
bt_keys_add_type(keys, type);
return keys;
}
static int start_security(struct bt_conn *conn)
{
#if defined(CONFIG_BLUETOOTH_BREDR)
if (conn->type == BT_CONN_TYPE_BR) {
if (atomic_test_bit(conn->flags, BT_CONN_BR_PAIRING)) {
return -EBUSY;
}
if (conn->required_sec_level > BT_SECURITY_HIGH) {
return -ENOTSUP;
}
if (bt_conn_get_io_capa() == BT_IO_NO_INPUT_OUTPUT &&
conn->required_sec_level > BT_SECURITY_MEDIUM) {
return -EINVAL;
}
return conn_auth(conn);
}
#endif /* CONFIG_BLUETOOTH_BREDR */
switch (conn->role) {
#if defined(CONFIG_BLUETOOTH_CENTRAL) && defined(CONFIG_BLUETOOTH_SMP)
case BT_HCI_ROLE_MASTER:
{
if (!conn->keys) {
conn->keys = bt_keys_find(BT_KEYS_LTK_P256,
&conn->le.dst);
if (!conn->keys) {
conn->keys = bt_keys_find(BT_KEYS_LTK,
&conn->le.dst);
}
}
if (!conn->keys ||
!(conn->keys->keys & (BT_KEYS_LTK | BT_KEYS_LTK_P256))) {
return bt_smp_send_pairing_req(conn);
}
if (conn->required_sec_level > BT_SECURITY_MEDIUM &&
!atomic_test_bit(&conn->keys->flags,
BT_KEYS_AUTHENTICATED)) {
return bt_smp_send_pairing_req(conn);
}
if (conn->required_sec_level > BT_SECURITY_HIGH &&
!atomic_test_bit(&conn->keys->flags,
BT_KEYS_AUTHENTICATED) &&
!(conn->keys->keys & BT_KEYS_LTK_P256)) {
return bt_smp_send_pairing_req(conn);
}
/* LE SC LTK and legacy master LTK are stored in same place */
return bt_conn_le_start_encryption(conn, conn->keys->ltk.rand,
conn->keys->ltk.ediv,
conn->keys->ltk.val,
conn->keys->enc_size);
}
#endif /* CONFIG_BLUETOOTH_CENTRAL && CONFIG_BLUETOOTH_SMP */
#if defined(CONFIG_BLUETOOTH_PERIPHERAL) && defined(CONFIG_BLUETOOTH_SMP)
case BT_HCI_ROLE_SLAVE:
return bt_smp_send_security_req(conn);
#endif /* CONFIG_BLUETOOTH_PERIPHERAL && CONFIG_BLUETOOTH_SMP */
default:
return -EINVAL;
}
}