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/*
* Copyright 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <cstdint>
#include "osi/include/log.h"
#include "stack/btm/btm_ble_int.h"
#include "stack/btm/btm_dev.h"
#include "stack/btm/btm_sec.h"
#include "stack/gatt/connection_manager.h"
#include "stack/include/acl_api.h"
#include "stack/include/bt_types.h"
#include "stack/include/l2cap_hci_link_interface.h"
#include "types/raw_address.h"
extern tBTM_CB btm_cb;
void btm_ble_advertiser_notify_terminated_legacy(uint8_t status,
uint16_t connection_handle);
void btm_ble_increment_link_topology_mask(uint8_t link_role);
bool maybe_resolve_address(RawAddress* bda, tBLE_ADDR_TYPE* bda_type);
static bool acl_ble_common_connection(const tBLE_BD_ADDR& address_with_type,
uint16_t handle, tHCI_ROLE role,
bool is_in_security_db,
uint16_t conn_interval,
uint16_t conn_latency,
uint16_t conn_timeout) {
if (role == HCI_ROLE_CENTRAL) {
btm_cb.ble_ctr_cb.set_connection_state_idle();
btm_ble_clear_topology_mask(BTM_BLE_STATE_INIT_BIT);
}
// Inform any applications that a connection has completed.
connection_manager::on_connection_complete(address_with_type.bda);
// Allocate or update the security device record for this device
btm_ble_connected(address_with_type.bda, handle, HCI_ENCRYPT_MODE_DISABLED,
role, address_with_type.type, is_in_security_db);
// Update the link topology information for our device
btm_ble_increment_link_topology_mask(role);
// Inform l2cap of a potential connection.
if (!l2cble_conn_comp(handle, role, address_with_type.bda,
address_with_type.type, conn_interval, conn_latency,
conn_timeout)) {
btm_sec_disconnect(handle, HCI_ERR_NO_CONNECTION,
"stack::acl::ble_acl fail");
LOG_WARN("Unable to complete l2cap connection");
return false;
}
/* Tell BTM Acl management about the link */
btm_acl_created(address_with_type.bda, handle, role, BT_TRANSPORT_LE);
return true;
}
void acl_ble_connection_complete(const tBLE_BD_ADDR& address_with_type,
uint16_t handle, tHCI_ROLE role, bool match,
uint16_t conn_interval, uint16_t conn_latency,
uint16_t conn_timeout) {
if (!acl_ble_common_connection(address_with_type, handle, role, match,
conn_interval, conn_latency, conn_timeout)) {
LOG_WARN("Unable to create non enhanced ble acl connection");
return;
}
btm_ble_update_mode_operation(role, &address_with_type.bda, HCI_SUCCESS);
if (role == HCI_ROLE_PERIPHERAL)
btm_ble_advertiser_notify_terminated_legacy(HCI_SUCCESS, handle);
}
void acl_ble_enhanced_connection_complete(
const tBLE_BD_ADDR& address_with_type, uint16_t handle, tHCI_ROLE role,
bool match, uint16_t conn_interval, uint16_t conn_latency,
uint16_t conn_timeout, const RawAddress& local_rpa,
const RawAddress& peer_rpa, tBLE_ADDR_TYPE peer_addr_type) {
if (!acl_ble_common_connection(address_with_type, handle, role, match,
conn_interval, conn_latency, conn_timeout)) {
LOG_WARN("Unable to create enhanced ble acl connection");
return;
}
btm_ble_refresh_local_resolvable_private_addr(address_with_type.bda,
local_rpa);
if (peer_addr_type & BLE_ADDR_TYPE_ID_BIT)
btm_ble_refresh_peer_resolvable_private_addr(
address_with_type.bda, peer_rpa, tBTM_SEC_BLE::BTM_BLE_ADDR_RRA);
btm_ble_update_mode_operation(role, &address_with_type.bda, HCI_SUCCESS);
if (role == HCI_ROLE_PERIPHERAL)
btm_ble_advertiser_notify_terminated_legacy(HCI_SUCCESS, handle);
}
static bool maybe_resolve_received_address(
const tBLE_BD_ADDR& address_with_type,
tBLE_BD_ADDR* resolved_address_with_type) {
ASSERT(resolved_address_with_type != nullptr);
*resolved_address_with_type = address_with_type;
return maybe_resolve_address(&resolved_address_with_type->bda,
&resolved_address_with_type->type);
}
void acl_ble_enhanced_connection_complete_from_shim(
const tBLE_BD_ADDR& address_with_type, uint16_t handle, tHCI_ROLE role,
uint16_t conn_interval, uint16_t conn_latency, uint16_t conn_timeout,
const RawAddress& local_rpa, const RawAddress& peer_rpa,
tBLE_ADDR_TYPE peer_addr_type) {
if (!connection_manager::remove_unconditional_from_shim(
address_with_type.bda)) {
LOG_WARN(
"Unable to remove from legacy connection manager accept list addr:%s",
PRIVATE_ADDRESS(address_with_type.bda));
}
tBLE_BD_ADDR resolved_address_with_type;
const bool is_in_security_db = maybe_resolve_received_address(
address_with_type, &resolved_address_with_type);
acl_ble_enhanced_connection_complete(resolved_address_with_type, handle, role,
is_in_security_db, conn_interval,
conn_latency, conn_timeout, local_rpa,
peer_rpa, peer_addr_type);
// The legacy stack continues the LE connection after the read remote version
// complete has been received.
// maybe_chain_more_commands_after_read_remote_version_complete
}
void acl_ble_connection_fail(const tBLE_BD_ADDR& address_with_type,
uint16_t handle, bool enhanced,
tHCI_STATUS status) {
if (status != HCI_ERR_ADVERTISING_TIMEOUT) {
btm_cb.ble_ctr_cb.set_connection_state_idle();
btm_ble_clear_topology_mask(BTM_BLE_STATE_INIT_BIT);
connection_manager::on_connection_timed_out_from_shim(
address_with_type.bda);
} else {
btm_cb.ble_ctr_cb.inq_var.adv_mode = BTM_BLE_ADV_DISABLE;
}
btm_ble_update_mode_operation(HCI_ROLE_UNKNOWN, &address_with_type.bda,
status);
}
void gatt_notify_conn_update(const RawAddress& remote, uint16_t interval,
uint16_t latency, uint16_t timeout,
tHCI_STATUS status);
void acl_ble_update_event_received(tHCI_STATUS status, uint16_t handle,
uint16_t interval, uint16_t latency,
uint16_t timeout) {
l2cble_process_conn_update_evt(handle, status, interval, latency, timeout);
tBTM_SEC_DEV_REC* p_dev_rec = btm_find_dev_by_handle(handle);
if (!p_dev_rec) return;
gatt_notify_conn_update(p_dev_rec->ble.pseudo_addr, interval, latency,
timeout, status);
}
void acl_ble_data_length_change_event(uint16_t handle, uint16_t max_tx_octets,
uint16_t max_tx_time,
uint16_t max_rx_octets,
uint16_t max_rx_time) {
LOG_DEBUG(
"Data length change event received handle:0x%04x max_tx_octets:%hu "
"max_tx_time:%hu max_rx_octets:%hu max_rx_time:%hu",
handle, max_tx_octets, max_tx_time, max_rx_octets, max_rx_time);
l2cble_process_data_length_change_event(handle, max_tx_octets, max_rx_octets);
}
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