allow host resolved address to be used for connection

pull/13759/head
Paul Szczeanek 2020-09-30 09:28:34 +01:00 committed by Vincent Coubard
parent 4744c87b6c
commit 18c218b027
2 changed files with 136 additions and 27 deletions

View File

@ -468,7 +468,11 @@ ble_error_t Gap::stopScan()
{
ble_error_t err;
if ((!_scan_enabled && !_scan_pending) || _scan_pending) {
if ((!_scan_enabled && !_scan_pending) || _scan_pending
#if BLE_GAP_HOST_BASED_PRIVATE_ADDRESS_RESOLUTION
|| _ready_to_connect_to_host_resolved_address
#endif // BLE_GAP_HOST_BASED_PRIVATE_ADDRESS_RESOLUTION
) {
return BLE_STACK_BUSY;
}
@ -524,6 +528,17 @@ ble_error_t Gap::connect(
ble_error_t ret = BLE_ERROR_INTERNAL_STACK_FAILURE;
#if BLE_GAP_HOST_BASED_PRIVATE_ADDRESS_RESOLUTION
if (_ready_to_connect_to_host_resolved_address) {
_ready_to_connect_to_host_resolved_address = false;
_connect_to_address_type = peer_address_type_t::ANONYMOUS;
} else if (peerAddressType == peer_address_type_t::RANDOM_STATIC_IDENTITY ||
peerAddressType == peer_address_type_t::PUBLIC_IDENTITY) {
_connect_to_address_type = peerAddressType;
_connect_to_address = peerAddress;
}
#endif BLE_GAP_HOST_BASED_PRIVATE_ADDRESS_RESOLUTION
if (is_extended_advertising_available() == false) {
phy_set_t set(connectionParams.getPhySet());
if (set.count() != 1 || set.get_1m() == false) {
@ -533,35 +548,52 @@ ble_error_t Gap::connect(
if (!_scan_enabled) {
if (!_active_sets.get(LEGACY_ADVERTISING_HANDLE) &&
!_pending_sets.get(LEGACY_ADVERTISING_HANDLE)
) {
) {
_pal_gap.set_random_address(*address);
}
} else {
// ensure scan is stopped.
_pal_gap.scan_enable(false, false);
stopScan();
}
#if BLE_GAP_HOST_BASED_PRIVATE_ADDRESS_RESOLUTION
if (_connect_to_address_type != peer_address_type_t::ANONYMOUS) {
ret = startScan(
(scan_duration_t)connectionParams.getConnectionSupervisionTimeoutArray()[0],
duplicates_filter_t::ENABLE,
(scan_period_t)0
);
if (ret == BLE_ERROR_NONE) {
_connection_parameters = new ConnectionParameters(connectionParams);
if (_connection_parameters) {
_ready_to_connect_to_host_resolved_address = true;
} else {
ret = BLE_ERROR_NO_MEM;
}
}
} else
#endif // BLE_GAP_HOST_BASED_PRIVATE_ADDRESS_RESOLUTION
{
ret = _pal_gap.create_connection(
connectionParams.getScanIntervalArray()[0],
connectionParams.getScanWindowArray()[0],
connectionParams.getFilter(),
(connection_peer_address_type_t::type) peerAddressType.value(),
peerAddress,
connectionParams.getOwnAddressType(),
connectionParams.getMinConnectionIntervalArray()[0],
connectionParams.getMaxConnectionIntervalArray()[0],
connectionParams.getSlaveLatencyArray()[0],
connectionParams.getConnectionSupervisionTimeoutArray()[0],
connectionParams.getMinEventLengthArray()[0],
connectionParams.getMaxConnectionIntervalArray()[0]
);
}
ret = _pal_gap.create_connection(
connectionParams.getScanIntervalArray()[0],
connectionParams.getScanWindowArray()[0],
connectionParams.getFilter(),
(connection_peer_address_type_t::type) peerAddressType.value(),
peerAddress,
connectionParams.getOwnAddressType(),
connectionParams.getMinConnectionIntervalArray()[0],
connectionParams.getMaxConnectionIntervalArray()[0],
connectionParams.getSlaveLatencyArray()[0],
connectionParams.getConnectionSupervisionTimeoutArray()[0],
connectionParams.getMinEventLengthArray()[0],
connectionParams.getMaxConnectionIntervalArray()[0]
);
} else {
// set the correct mac address before starting scanning.
if (!_scan_enabled) {
_pal_gap.set_random_address(*address);
} else {
// ensure scan is stopped.
_pal_gap.extended_scan_enable(false, duplicates_filter_t::DISABLE, 0, 0);
stopScan();
}
// reduce the address type to public or random
@ -1150,6 +1182,32 @@ void Gap::on_scan_stopped(bool success)
}
}
#if BLE_GAP_HOST_BASED_PRIVATE_ADDRESS_RESOLUTION
void Gap::connecting_to_host_resolved_address_failed()
{
if (_event_handler) {
_event_handler->onConnectionComplete(
ConnectionCompleteEvent(
BLE_ERROR_NOT_FOUND,
INVALID_ADVERTISING_HANDLE,
connection_role_t::CENTRAL,
peer_address_type_t::ANONYMOUS,
ble::address_t(),
ble::address_t(),
ble::address_t(),
ble::conn_interval_t::max(),
/* dummy slave latency */ 0,
ble::supervision_timeout_t::max(),
/* master clock accuracy */ 0
)
);
}
_ready_to_connect_to_host_resolved_address = false;
_connect_to_address_type = peer_address_type_t::ANONYMOUS;
delete _connection_parameters;
_connection_parameters = nullptr;
}
#endif // BLE_GAP_HOST_BASED_PRIVATE_ADDRESS_RESOLUTION
void Gap::on_scan_timeout()
{
@ -1161,6 +1219,13 @@ void Gap::on_scan_timeout()
_scan_enabled = false;
_scan_pending = false;
#if BLE_GAP_HOST_BASED_PRIVATE_ADDRESS_RESOLUTION
if (_ready_to_connect_to_host_resolved_address) {
connecting_to_host_resolved_address_failed();
return;
}
#endif // BLE_GAP_HOST_BASED_PRIVATE_ADDRESS_RESOLUTION
if (_event_handler) {
_event_handler->onScanTimeout(ScanTimeoutEvent());
}
@ -1176,6 +1241,13 @@ void Gap::process_legacy_scan_timeout()
/* legacy scanning timed out is based on timer so we need to stop the scan manually */
_pal_gap.scan_enable(false, false);
#if BLE_GAP_HOST_BASED_PRIVATE_ADDRESS_RESOLUTION
if (_ready_to_connect_to_host_resolved_address) {
connecting_to_host_resolved_address_failed();
return;
}
#endif // BLE_GAP_HOST_BASED_PRIVATE_ADDRESS_RESOLUTION
if (_event_handler) {
_event_handler->onScanTimeout(ScanTimeoutEvent());
}
@ -2551,9 +2623,18 @@ void Gap::signal_advertising_report(
/* if successful then proceed to call the handler immediately same as for when privacy is disabled */
if (address_resolved) {
_event_handler->onAdvertisingReport(
event
);
if (_ready_to_connect_to_host_resolved_address) {
if (_connect_to_address_type == event.getDirectAddressType() &&
_connect_to_address == event.getDirectAddress()) {
connect(_connect_to_address_type, _connect_to_address, *_connection_parameters);
delete _connection_parameters;
_connection_parameters = nullptr;
}
} else {
_event_handler->onAdvertisingReport(
event
);
}
} else {
/* check if there already is a RPA like that in the list of other pending reports */
PendingAdvertisingReportEvent *duplicate_pending_event = _reports_pending_address_resolution.find(
@ -2602,12 +2683,25 @@ void Gap::conclude_signal_advertising_report_after_address_resolution(
const address_t *identity_address
)
{
/* fix the report with the new address if there's an identity found */
if (identity_address) {
const peer_address_type_t peer_address_type = (identity_address_type == target_peer_address_type_t::RANDOM) ?
peer_address_type_t::RANDOM_STATIC_IDENTITY
: peer_address_type_t::PUBLIC_IDENTITY;
if (_ready_to_connect_to_host_resolved_address) {
if (_connect_to_address_type == peer_address_type && _connect_to_address == *identity_address) {
connect(event.getPeerAddressType(), event.getPeerAddress(), *_connection_parameters);
delete _connection_parameters;
_connection_parameters = nullptr;
return;
}
}
event.setPeerAddress(*identity_address);
event.setPeerAddressType(identity_address_type == target_peer_address_type_t::RANDOM ?
peer_address_type_t::RANDOM_STATIC_IDENTITY
: peer_address_type_t::PUBLIC_IDENTITY);
event.setPeerAddressType(peer_address_type);
} else if (_central_privacy_configuration.resolution_strategy ==
central_privacy_configuration_t::RESOLVE_AND_FILTER &&
_address_registry.read_resolving_list_size() > 0) {
@ -2887,7 +2981,11 @@ ble_error_t Gap::startScan(
scan_period_t period
)
{
if (_scan_pending || _scan_address_refresh) {
if (_scan_pending || _scan_address_refresh
#if BLE_GAP_HOST_BASED_PRIVATE_ADDRESS_RESOLUTION
|| _ready_to_connect_to_host_resolved_address
#endif // BLE_GAP_HOST_BASED_PRIVATE_ADDRESS_RESOLUTION
) {
return BLE_STACK_BUSY;
}

View File

@ -798,6 +798,10 @@ private:
const address_t *get_random_address(controller_operation_t operation, size_t advertising_set = 0);
#if BLE_GAP_HOST_BASED_PRIVATE_ADDRESS_RESOLUTION
void connecting_to_host_resolved_address_failed();
#endif // BLE_GAP_HOST_BASED_PRIVATE_ADDRESS_RESOLUTION
private:
/**
* Callchain containing all registered callback handlers for shutdown
@ -847,6 +851,13 @@ private:
bool _scan_pending = false;
bool _scan_interruptible = false;
bool _scan_address_refresh = false;
#if BLE_GAP_HOST_BASED_PRIVATE_ADDRESS_RESOLUTION
bool _ready_to_connect_to_host_resolved_address = false;
peer_address_type_t _connect_to_address_type = peer_address_type_t::ANONYMOUS;
ble::address_t _connect_to_address;
ConnectionParameters *_connection_parameters = nullptr;
#endif // BLE_GAP_HOST_BASED_PRIVATE_ADDRESS_RESOLUTION
mbed::LowPowerTimeout _advertising_timeout;
mbed::LowPowerTimeout _scan_timeout;
mbed::LowPowerTicker _address_rotation_ticker;