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/*
*
* Copyright (c) 2021 Project CHIP Authors
*
* 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 <lib/support/CodeUtils.h>
#include <lib/support/SafeInt.h>
#include <platform/CHIPDeviceLayer.h>
#include <platform/ThreadStackManager.h>
#include <platform/webos/NetworkCommissioningDriver.h>
#include <platform/webos/ThreadStackManagerImpl.h>
#include <limits>
#include <string>
#include <vector>
using namespace chip;
using namespace chip::Thread;
namespace chip {
namespace DeviceLayer {
namespace NetworkCommissioning {
#if CHIP_DEVICE_CONFIG_ENABLE_THREAD
// NOTE: For ThreadDriver, we uses two network configs, one is mSavedNetwork, and another is mStagingNetwork, during init, it will
// load the network config from otbr-agent, and loads it into both mSavedNetwork and mStagingNetwork. When updating the networks,
// all changed are made on the staging network.
// TODO: The otbr-posix does not actually maintains its own networking states, it will always persist the last network connected.
// This should not be an issue for most cases, but we should implement the code for maintaining the states by ourselves.
CHIP_ERROR LinuxThreadDriver::Init(BaseDriver::NetworkStatusChangeCallback * networkStatusChangeCallback)
{
VerifyOrReturnError(ConnectivityMgrImpl().IsThreadAttached(), CHIP_NO_ERROR);
VerifyOrReturnError(ThreadStackMgrImpl().GetThreadProvision(mStagingNetwork) == CHIP_NO_ERROR, CHIP_NO_ERROR);
mSavedNetwork.Init(mStagingNetwork.AsByteSpan());
ThreadStackMgrImpl().SetNetworkStatusChangeCallback(networkStatusChangeCallback);
return CHIP_NO_ERROR;
}
void LinuxThreadDriver::Shutdown()
{
ThreadStackMgrImpl().SetNetworkStatusChangeCallback(nullptr);
}
CHIP_ERROR LinuxThreadDriver::CommitConfiguration()
{
// Note: otbr-agent will persist the networks by their own, we don't have much to do for saving the networks (see Init() above,
// we just loads the saved dataset from otbr-agent.)
mSavedNetwork = mStagingNetwork;
return CHIP_NO_ERROR;
}
CHIP_ERROR LinuxThreadDriver::RevertConfiguration()
{
mStagingNetwork = mSavedNetwork;
return CHIP_NO_ERROR;
}
Status LinuxThreadDriver::AddOrUpdateNetwork(ByteSpan operationalDataset, MutableCharSpan & outDebugText, uint8_t & outNetworkIndex)
{
uint8_t extpanid[kSizeExtendedPanId];
uint8_t newExtpanid[kSizeExtendedPanId];
Thread::OperationalDataset newDataset;
outDebugText.reduce_size(0);
outNetworkIndex = 0;
newDataset.Init(operationalDataset);
VerifyOrReturnError(newDataset.IsCommissioned(), Status::kOutOfRange);
VerifyOrReturnError(!mStagingNetwork.IsCommissioned() || memcmp(extpanid, newExtpanid, kSizeExtendedPanId) == 0,
Status::kBoundsExceeded);
mStagingNetwork = newDataset;
return Status::kSuccess;
}
Status LinuxThreadDriver::RemoveNetwork(ByteSpan networkId, MutableCharSpan & outDebugText, uint8_t & outNetworkIndex)
{
outDebugText.reduce_size(0);
outNetworkIndex = 0;
uint8_t extpanid[kSizeExtendedPanId];
if (!mStagingNetwork.IsCommissioned())
{
return Status::kNetworkNotFound;
}
if (mStagingNetwork.GetExtendedPanId(extpanid) != CHIP_NO_ERROR)
{
return Status::kUnknownError;
}
VerifyOrReturnError(networkId.size() == kSizeExtendedPanId && memcmp(networkId.data(), extpanid, kSizeExtendedPanId) == 0,
Status::kNetworkNotFound);
mStagingNetwork.Clear();
return Status::kSuccess;
}
Status LinuxThreadDriver::ReorderNetwork(ByteSpan networkId, uint8_t index, MutableCharSpan & outDebugText)
{
outDebugText.reduce_size(0);
uint8_t extpanid[kSizeExtendedPanId];
if (!mStagingNetwork.IsCommissioned())
{
return Status::kNetworkNotFound;
}
if (mStagingNetwork.GetExtendedPanId(extpanid) != CHIP_NO_ERROR)
{
return Status::kUnknownError;
}
VerifyOrReturnError(networkId.size() == kSizeExtendedPanId && memcmp(networkId.data(), extpanid, kSizeExtendedPanId) == 0,
Status::kNetworkNotFound);
return Status::kSuccess;
}
void LinuxThreadDriver::ConnectNetwork(ByteSpan networkId, ConnectCallback * callback)
{
NetworkCommissioning::Status status = Status::kSuccess;
uint8_t extpanid[kSizeExtendedPanId];
if (!mStagingNetwork.IsCommissioned())
{
ExitNow(status = Status::kNetworkNotFound);
}
else if (mStagingNetwork.GetExtendedPanId(extpanid) != CHIP_NO_ERROR)
{
ExitNow(status = Status::kUnknownError);
}
VerifyOrExit((networkId.size() == kSizeExtendedPanId && memcmp(networkId.data(), extpanid, kSizeExtendedPanId) == 0),
status = Status::kNetworkNotFound);
VerifyOrExit(DeviceLayer::ThreadStackMgrImpl().AttachToThreadNetwork(mStagingNetwork, callback) == CHIP_NO_ERROR,
status = Status::kUnknownError);
exit:
if (status != Status::kSuccess)
{
callback->OnResult(status, CharSpan(), 0);
}
}
void LinuxThreadDriver::ScanNetworks(ThreadDriver::ScanCallback * callback)
{
CHIP_ERROR err = DeviceLayer::ThreadStackMgrImpl().StartThreadScan(callback);
// The ThreadScan callback will always be invoked in CHIP mainloop, which is strictly after this function
if (err != CHIP_NO_ERROR)
{
callback->OnFinished(Status::kUnknownError, CharSpan(), nullptr);
}
}
size_t LinuxThreadDriver::ThreadNetworkIterator::Count()
{
return driver->mStagingNetwork.IsCommissioned() ? 1 : 0;
}
bool LinuxThreadDriver::ThreadNetworkIterator::Next(Network & item)
{
if (exhausted || !driver->mStagingNetwork.IsCommissioned())
{
return false;
}
uint8_t extpanid[kSizeExtendedPanId];
VerifyOrReturnError(driver->mStagingNetwork.GetExtendedPanId(extpanid) == CHIP_NO_ERROR, false);
memcpy(item.networkID, extpanid, kSizeExtendedPanId);
item.networkIDLen = kSizeExtendedPanId;
item.connected = false;
exhausted = true;
Thread::OperationalDataset currentDataset;
uint8_t enabledExtPanId[Thread::kSizeExtendedPanId];
// The Thread network is not actually enabled.
VerifyOrReturnError(ConnectivityMgrImpl().IsThreadAttached(), true);
VerifyOrReturnError(ThreadStackMgrImpl().GetThreadProvision(currentDataset) == CHIP_NO_ERROR, true);
// The Thread network is not enabled, but has a different extended pan id.
VerifyOrReturnError(currentDataset.GetExtendedPanId(enabledExtPanId) == CHIP_NO_ERROR, true);
VerifyOrReturnError(memcmp(extpanid, enabledExtPanId, kSizeExtendedPanId) == 0, true);
// The Thread network is enabled and has the same extended pan id as the one in our record.
item.connected = true;
return true;
}
ThreadCapabilities LinuxThreadDriver::GetSupportedThreadFeatures()
{
BitMask<ThreadCapabilities> capabilites = 0;
capabilites.SetField(ThreadCapabilities::kIsBorderRouterCapable, CHIP_DEVICE_CONFIG_THREAD_BORDER_ROUTER);
capabilites.SetField(ThreadCapabilities::kIsRouterCapable, CHIP_DEVICE_CONFIG_THREAD_FTD);
capabilites.SetField(ThreadCapabilities::kIsSleepyEndDeviceCapable, !CHIP_DEVICE_CONFIG_THREAD_FTD);
capabilites.SetField(ThreadCapabilities::kIsFullThreadDevice, CHIP_DEVICE_CONFIG_THREAD_FTD);
capabilites.SetField(ThreadCapabilities::kIsSynchronizedSleepyEndDeviceCapable,
(!CHIP_DEVICE_CONFIG_THREAD_FTD && CHIP_DEVICE_CONFIG_THREAD_SSED));
return capabilites;
}
uint16_t LinuxThreadDriver::GetThreadVersion()
{
// TODO https://github.com/project-chip/connectedhomeip/issues/30602
// Needs to be implemented with DBUS io.openthread.BorderRouter Thread API
return 0;
}
#endif // CHIP_DEVICE_CONFIG_ENABLE_THREAD
} // namespace NetworkCommissioning
} // namespace DeviceLayer
} // namespace chip