src/controller/python/ChipDeviceController-ScriptBinding.cpp - third_party/github/project-chip/connectedhomeip - Git at Google

 /*
  *
  *    Copyright (c) 2020-2021 Project CHIP Authors
  *    Copyright (c) 2019-2020 Google LLC.
  *    Copyright (c) 2013-2018 Nest Labs, Inc.
  *    All rights reserved.
  *
  *    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.
  */

 /**
  *    @file
  *      Implementation of the native methods expected by the Python
  *      version of Chip Device Manager.
  *
  */

 #include <errno.h>
 #include <fcntl.h>
 #include <memory>
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/time.h>
 #include <unistd.h>

 #include <system/SystemError.h>
 #include <system/SystemLayer.h>

 #include <inttypes.h>
 #include <net/if.h>

 #include "ChipDeviceController-ScriptDeviceAddressUpdateDelegate.h"
 #include "ChipDeviceController-ScriptDevicePairingDelegate.h"
 #include "ChipDeviceController-StorageDelegate.h"

 #include "chip/interaction_model/Delegate.h"

 #include <app/CommandSender.h>
 #include <app/InteractionModelEngine.h>
 #include <controller/CHIPDevice.h>
 #include <controller/CHIPDeviceController.h>
 #include <mdns/Resolver.h>
 #include <support/CHIPMem.h>
 #include <support/CodeUtils.h>
 #include <support/DLLUtil.h>
 #include <support/logging/CHIPLogging.h>

 using namespace chip;
 using namespace chip::Ble;
 using namespace chip::Controller;

 extern "C" {
 typedef void (*ConstructBytesArrayFunct)(const uint8_t * dataBuf, uint32_t dataLen);
 typedef void (*LogMessageFunct)(uint64_t time, uint64_t timeUS, const char * moduleName, uint8_t category, const char * msg);
 }

 namespace {
 chip::Controller::PythonPersistentStorageDelegate sStorageDelegate;
 chip::Controller::ScriptDevicePairingDelegate sPairingDelegate;
 chip::Controller::ScriptDeviceAddressUpdateDelegate sDeviceAddressUpdateDelegate;
 } // namespace

 // NOTE: Remote device ID is in sync with the echo server device id
 // At some point, we may want to add an option to connect to a device without
 // knowing its id, because the ID can be learned on the first response that is received.
 chip::NodeId kDefaultLocalDeviceId = chip::kTestControllerNodeId;
 chip::NodeId kRemoteDeviceId       = chip::kTestDeviceNodeId;

 extern "C" {
 CHIP_ERROR pychip_DeviceController_NewDeviceController(chip::Controller::DeviceCommissioner ** outDevCtrl,
                                                        chip::NodeId localDeviceId);
 CHIP_ERROR pychip_DeviceController_DeleteDeviceController(chip::Controller::DeviceCommissioner * devCtrl);
 CHIP_ERROR
 pychip_DeviceController_GetAddressAndPort(chip::Controller::DeviceCommissioner * devCtrl, chip::NodeId nodeId, char * outAddress,
                                           uint64_t maxAddressLen, uint16_t * outPort);

 // Rendezvous
 CHIP_ERROR pychip_DeviceController_ConnectBLE(chip::Controller::DeviceCommissioner * devCtrl, uint16_t discriminator,
                                               uint32_t setupPINCode, chip::NodeId nodeid);
 CHIP_ERROR pychip_DeviceController_ConnectIP(chip::Controller::DeviceCommissioner * devCtrl, const char * peerAddrStr,
                                              uint32_t setupPINCode, chip::NodeId nodeid);

 // Pairing Delegate
 CHIP_ERROR
 pychip_ScriptDevicePairingDelegate_SetWifiCredential(chip::Controller::DeviceCommissioner * devCtrl, const char * ssid,
                                                      const char * password);
 CHIP_ERROR
 pychip_ScriptDevicePairingDelegate_SetThreadCredential(chip::Controller::DeviceCommissioner * devCtrl, int channel, int panId,
                                                        const char * masterKey);
 CHIP_ERROR
 pychip_ScriptDevicePairingDelegate_SetKeyExchangeCallback(chip::Controller::DeviceCommissioner * devCtrl,
                                                           chip::Controller::DevicePairingDelegate_OnPairingCompleteFunct callback);

 void pychip_ScriptDeviceAddressUpdateDelegate_SetOnAddressUpdateComplete(
     chip::Controller::DeviceAddressUpdateDelegate_OnUpdateComplete callback);
 CHIP_ERROR pychip_Resolver_ResolveNode(uint64_t fabricid, chip::NodeId nodeid);

 // BLE
 CHIP_ERROR pychip_DeviceCommissioner_CloseBleConnection(chip::Controller::DeviceCommissioner * devCtrl);

 uint8_t pychip_DeviceController_GetLogFilter();
 void pychip_DeviceController_SetLogFilter(uint8_t category);

 CHIP_ERROR pychip_Stack_Init();
 CHIP_ERROR pychip_Stack_Shutdown();
 const char * pychip_Stack_ErrorToString(CHIP_ERROR err);
 const char * pychip_Stack_StatusReportToString(uint32_t profileId, uint16_t statusCode);
 void pychip_Stack_SetLogFunct(LogMessageFunct logFunct);

 CHIP_ERROR pychip_GetDeviceByNodeId(chip::Controller::DeviceCommissioner * devCtrl, chip::NodeId nodeId,
                                     chip::Controller::Device ** device);
 uint64_t pychip_GetCommandSenderHandle(chip::Controller::Device * device);
 // CHIP Stack objects
 CHIP_ERROR pychip_BLEMgrImpl_ConfigureBle(uint32_t bluetoothAdapterId);
 }

 CHIP_ERROR pychip_DeviceController_NewDeviceController(chip::Controller::DeviceCommissioner ** outDevCtrl,
                                                        chip::NodeId localDeviceId)
 {
     CHIP_ERROR err = CHIP_NO_ERROR;
     ControllerInitParams initParams{ .storageDelegate              = &sStorageDelegate,
                                      .mDeviceAddressUpdateDelegate = &sDeviceAddressUpdateDelegate };

     *outDevCtrl = new chip::Controller::DeviceCommissioner();
     VerifyOrExit(*outDevCtrl != NULL, err = CHIP_ERROR_NO_MEMORY);

     if (localDeviceId == chip::kUndefinedNodeId)
     {
         localDeviceId = kDefaultLocalDeviceId;
     }

 #if CHIP_ENABLE_INTERACTION_MODEL
     initParams.imDelegate = &PythonInteractionModelDelegate::Instance();
 #endif

     SuccessOrExit(err = (*outDevCtrl)->Init(localDeviceId, initParams, &sPairingDelegate));
     SuccessOrExit(err = (*outDevCtrl)->ServiceEvents());

 exit:
     return err;
 }

 CHIP_ERROR pychip_DeviceController_DeleteDeviceController(chip::Controller::DeviceCommissioner * devCtrl)
 {
     if (devCtrl != NULL)
     {
         devCtrl->Shutdown();
         delete devCtrl;
     }

     return CHIP_NO_ERROR;
 }

 CHIP_ERROR pychip_DeviceController_GetAddressAndPort(chip::Controller::DeviceCommissioner * devCtrl, chip::NodeId nodeId,
                                                      char * outAddress, uint64_t maxAddressLen, uint16_t * outPort)
 {
     Device * device;
     ReturnErrorOnFailure(devCtrl->GetDevice(nodeId, &device));

     Inet::IPAddress address;
     VerifyOrReturnError(device->GetAddress(address, *outPort), CHIP_ERROR_INCORRECT_STATE);
     VerifyOrReturnError(address.ToString(outAddress, maxAddressLen), CHIP_ERROR_BUFFER_TOO_SMALL);

     return CHIP_NO_ERROR;
 }

 const char * pychip_DeviceController_ErrorToString(CHIP_ERROR err)
 {
     return chip::ErrorStr(err);
 }

 const char * pychip_DeviceController_StatusReportToString(uint32_t profileId, uint16_t statusCode)
 {
     // return chip::StatusReportStr(profileId, statusCode);
     return NULL;
 }

 uint8_t pychip_DeviceController_GetLogFilter()
 {
 #if _CHIP_USE_LOGGING
     return chip::Logging::GetLogFilter();
 #else
     return chip::Logging::kLogCategory_None;
 #endif
 }

 void pychip_DeviceController_SetLogFilter(uint8_t category)
 {
 #if _CHIP_USE_LOGGING
     chip::Logging::SetLogFilter(category);
 #endif
 }

 CHIP_ERROR pychip_DeviceController_ConnectBLE(chip::Controller::DeviceCommissioner * devCtrl, uint16_t discriminator,
                                               uint32_t setupPINCode, chip::NodeId nodeid)
 {
     return devCtrl->PairDevice(nodeid,
                                chip::RendezvousParameters()
                                    .SetPeerAddress(Transport::PeerAddress(Transport::Type::kBle))
                                    .SetSetupPINCode(setupPINCode)
                                    .SetDiscriminator(discriminator));
 }

 CHIP_ERROR pychip_DeviceController_ConnectIP(chip::Controller::DeviceCommissioner * devCtrl, const char * peerAddrStr,
                                              uint32_t setupPINCode, chip::NodeId nodeid)
 {
     CHIP_ERROR err = CHIP_NO_ERROR;
     chip::Inet::IPAddress peerAddr;
     chip::Transport::PeerAddress addr;
     chip::RendezvousParameters params = chip::RendezvousParameters().SetSetupPINCode(setupPINCode);

     VerifyOrReturnError(chip::Inet::IPAddress::FromString(peerAddrStr, peerAddr), err = CHIP_ERROR_INVALID_ARGUMENT);
     // TODO: IP rendezvous should use TCP connection.
     addr.SetTransportType(chip::Transport::Type::kUdp).SetIPAddress(peerAddr);
     params.SetPeerAddress(addr).SetDiscriminator(0);
     return devCtrl->PairDevice(nodeid, params);
 }

 CHIP_ERROR
 pychip_ScriptDevicePairingDelegate_SetWifiCredential(chip::Controller::DeviceCommissioner * devCtrl, const char * ssid,
                                                      const char * password)
 {
     CHIP_ERROR err = CHIP_NO_ERROR;
     (void) devCtrl;

     VerifyOrExit(ssid != nullptr, err = CHIP_ERROR_INVALID_ARGUMENT);
     VerifyOrExit(password != nullptr, err = CHIP_ERROR_INVALID_ARGUMENT);

     sPairingDelegate.SetWifiCredential(ssid, password);

 exit:
     return err;
 }

 CHIP_ERROR
 pychip_ScriptDevicePairingDelegate_SetThreadCredential(chip::Controller::DeviceCommissioner * devCtrl, int channel, int panId,
                                                        const char * masterKeyStr)
 {
     CHIP_ERROR err = CHIP_NO_ERROR;
     uint8_t masterKey[chip::Thread::kSizeMasterKey];
     (void) devCtrl;

     VerifyOrExit(strlen(masterKeyStr) == 2 * chip::Thread::kSizeMasterKey, err = CHIP_ERROR_INVALID_ARGUMENT);

     for (size_t i = 0; i < chip::Thread::kSizeMasterKey; i++)
         VerifyOrExit(sscanf(&masterKeyStr[2 * i], "%2hhx", &masterKey[i]) == 1, err = CHIP_ERROR_INVALID_ARGUMENT);

     sPairingDelegate.SetThreadCredential(channel, panId, masterKey);

 exit:
     return err;
 }

 CHIP_ERROR
 pychip_ScriptDevicePairingDelegate_SetKeyExchangeCallback(chip::Controller::DeviceCommissioner * devCtrl,
                                                           chip::Controller::DevicePairingDelegate_OnPairingCompleteFunct callback)
 {
     sPairingDelegate.SetKeyExchangeCallback(callback);
     return CHIP_NO_ERROR;
 }

 void pychip_ScriptDeviceAddressUpdateDelegate_SetOnAddressUpdateComplete(
     chip::Controller::DeviceAddressUpdateDelegate_OnUpdateComplete callback)
 {
     sDeviceAddressUpdateDelegate.SetOnAddressUpdateComplete(callback);
 }

 CHIP_ERROR pychip_Resolver_ResolveNode(uint64_t fabricid, chip::NodeId nodeid)
 {
     return Mdns::Resolver::Instance().ResolveNodeId(PeerId().SetNodeId(nodeid).SetFabricId(fabricid), Inet::kIPAddressType_Any);
 }

 CHIP_ERROR pychip_Stack_Init()
 {
     CHIP_ERROR err = CHIP_NO_ERROR;

     err = chip::Platform::MemoryInit();
     SuccessOrExit(err);

 #if !CHIP_SYSTEM_CONFIG_USE_SOCKETS

     ExitNow(err = CHIP_ERROR_NOT_IMPLEMENTED);

 #else /* CHIP_SYSTEM_CONFIG_USE_SOCKETS */

 #endif /* CHIP_SYSTEM_CONFIG_USE_SOCKETS */

 exit:
     if (err != CHIP_NO_ERROR)
         pychip_Stack_Shutdown();

     return err;
 }

 CHIP_ERROR pychip_Stack_Shutdown()
 {
     return CHIP_NO_ERROR;
 }

 const char * pychip_Stack_ErrorToString(CHIP_ERROR err)
 {
     return chip::ErrorStr(err);
 }

 const char * pychip_Stack_StatusReportToString(uint32_t profileId, uint16_t statusCode)
 {
     // return chip::StatusReportStr(profileId, statusCode);
     return NULL;
 }

 CHIP_ERROR pychip_GetDeviceByNodeId(chip::Controller::DeviceCommissioner * devCtrl, chip::NodeId nodeId,
                                     chip::Controller::Device ** device)
 {
     VerifyOrReturnError(devCtrl != nullptr, CHIP_ERROR_INVALID_ARGUMENT);
     return devCtrl->GetDevice(nodeId, device);
 }

 CHIP_ERROR pychip_DeviceCommissioner_CloseBleConnection(chip::Controller::DeviceCommissioner * devCtrl)
 {
 #if CONFIG_NETWORK_LAYER_BLE
     return devCtrl->CloseBleConnection();
 #else
     return CHIP_ERROR_UNSUPPORTED_CHIP_FEATURE;
 #endif
 }

 uint64_t pychip_GetCommandSenderHandle(chip::Controller::Device * device)
 {
     chip::app::CommandSender * sender = device->GetCommandSender();
     return sender == nullptr ? 0 : reinterpret_cast<uint64_t>(sender);
 }

 void pychip_Stack_SetLogFunct(LogMessageFunct logFunct)
 {
     // TODO: determine if log redirection is supposed to be functioning in CHIP
     //
     // Background: original log baseline supported 'redirect logs to this
     // function' however CHIP does not currently provide this.
     //
     // Ideally log redirection should work so that python code can do things
     // like using the log module.
 }
	/*
	*
	* Copyright (c) 2020-2021 Project CHIP Authors
	* Copyright (c) 2019-2020 Google LLC.
	* Copyright (c) 2013-2018 Nest Labs, Inc.
	* All rights reserved.
	*
	* 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.
	*/

	/**
	* @file
	* Implementation of the native methods expected by the Python
	* version of Chip Device Manager.
	*
	*/

	#include <errno.h>
	#include <fcntl.h>
	#include <memory>
	#include <stdio.h>
	#include <stdlib.h>
	#include <sys/time.h>
	#include <unistd.h>

	#include <system/SystemError.h>
	#include <system/SystemLayer.h>

	#include <inttypes.h>
	#include <net/if.h>

	#include "ChipDeviceController-ScriptDeviceAddressUpdateDelegate.h"
	#include "ChipDeviceController-ScriptDevicePairingDelegate.h"
	#include "ChipDeviceController-StorageDelegate.h"

	#include "chip/interaction_model/Delegate.h"

	#include <app/CommandSender.h>
	#include <app/InteractionModelEngine.h>
	#include <controller/CHIPDevice.h>
	#include <controller/CHIPDeviceController.h>
	#include <mdns/Resolver.h>
	#include <support/CHIPMem.h>
	#include <support/CodeUtils.h>
	#include <support/DLLUtil.h>
	#include <support/logging/CHIPLogging.h>

	using namespace chip;
	using namespace chip::Ble;
	using namespace chip::Controller;

	extern "C" {
	typedef void (ConstructBytesArrayFunct)(const uint8_t dataBuf, uint32_t dataLen);
	typedef void (LogMessageFunct)(uint64_t time, uint64_t timeUS, const char moduleName, uint8_t category, const char * msg);
	}

	namespace {
	chip::Controller::PythonPersistentStorageDelegate sStorageDelegate;
	chip::Controller::ScriptDevicePairingDelegate sPairingDelegate;
	chip::Controller::ScriptDeviceAddressUpdateDelegate sDeviceAddressUpdateDelegate;
	} // namespace

	// NOTE: Remote device ID is in sync with the echo server device id
	// At some point, we may want to add an option to connect to a device without
	// knowing its id, because the ID can be learned on the first response that is received.
	chip::NodeId kDefaultLocalDeviceId = chip::kTestControllerNodeId;
	chip::NodeId kRemoteDeviceId = chip::kTestDeviceNodeId;

	extern "C" {
	CHIP_ERROR pychip_DeviceController_NewDeviceController(chip::Controller::DeviceCommissioner ** outDevCtrl,
	chip::NodeId localDeviceId);
	CHIP_ERROR pychip_DeviceController_DeleteDeviceController(chip::Controller::DeviceCommissioner * devCtrl);
	CHIP_ERROR
	pychip_DeviceController_GetAddressAndPort(chip::Controller::DeviceCommissioner * devCtrl, chip::NodeId nodeId, char * outAddress,
	uint64_t maxAddressLen, uint16_t * outPort);

	// Rendezvous
	CHIP_ERROR pychip_DeviceController_ConnectBLE(chip::Controller::DeviceCommissioner * devCtrl, uint16_t discriminator,
	uint32_t setupPINCode, chip::NodeId nodeid);
	CHIP_ERROR pychip_DeviceController_ConnectIP(chip::Controller::DeviceCommissioner * devCtrl, const char * peerAddrStr,
	uint32_t setupPINCode, chip::NodeId nodeid);

	// Pairing Delegate
	CHIP_ERROR
	pychip_ScriptDevicePairingDelegate_SetWifiCredential(chip::Controller::DeviceCommissioner * devCtrl, const char * ssid,
	const char * password);
	CHIP_ERROR
	pychip_ScriptDevicePairingDelegate_SetThreadCredential(chip::Controller::DeviceCommissioner * devCtrl, int channel, int panId,
	const char * masterKey);
	CHIP_ERROR
	pychip_ScriptDevicePairingDelegate_SetKeyExchangeCallback(chip::Controller::DeviceCommissioner * devCtrl,
	chip::Controller::DevicePairingDelegate_OnPairingCompleteFunct callback);

	void pychip_ScriptDeviceAddressUpdateDelegate_SetOnAddressUpdateComplete(
	chip::Controller::DeviceAddressUpdateDelegate_OnUpdateComplete callback);
	CHIP_ERROR pychip_Resolver_ResolveNode(uint64_t fabricid, chip::NodeId nodeid);

	// BLE
	CHIP_ERROR pychip_DeviceCommissioner_CloseBleConnection(chip::Controller::DeviceCommissioner * devCtrl);

	uint8_t pychip_DeviceController_GetLogFilter();
	void pychip_DeviceController_SetLogFilter(uint8_t category);

	CHIP_ERROR pychip_Stack_Init();
	CHIP_ERROR pychip_Stack_Shutdown();
	const char * pychip_Stack_ErrorToString(CHIP_ERROR err);
	const char * pychip_Stack_StatusReportToString(uint32_t profileId, uint16_t statusCode);
	void pychip_Stack_SetLogFunct(LogMessageFunct logFunct);

	CHIP_ERROR pychip_GetDeviceByNodeId(chip::Controller::DeviceCommissioner * devCtrl, chip::NodeId nodeId,
	chip::Controller::Device ** device);
	uint64_t pychip_GetCommandSenderHandle(chip::Controller::Device * device);
	// CHIP Stack objects
	CHIP_ERROR pychip_BLEMgrImpl_ConfigureBle(uint32_t bluetoothAdapterId);
	}

	CHIP_ERROR pychip_DeviceController_NewDeviceController(chip::Controller::DeviceCommissioner ** outDevCtrl,
	chip::NodeId localDeviceId)
	{
	CHIP_ERROR err = CHIP_NO_ERROR;
	ControllerInitParams initParams{ .storageDelegate = &sStorageDelegate,
	.mDeviceAddressUpdateDelegate = &sDeviceAddressUpdateDelegate };

	*outDevCtrl = new chip::Controller::DeviceCommissioner();
	VerifyOrExit(*outDevCtrl != NULL, err = CHIP_ERROR_NO_MEMORY);

	if (localDeviceId == chip::kUndefinedNodeId)
	{
	localDeviceId = kDefaultLocalDeviceId;
	}

	#if CHIP_ENABLE_INTERACTION_MODEL
	initParams.imDelegate = &PythonInteractionModelDelegate::Instance();
	#endif

	SuccessOrExit(err = (*outDevCtrl)->Init(localDeviceId, initParams, &sPairingDelegate));
	SuccessOrExit(err = (*outDevCtrl)->ServiceEvents());

	exit:
	return err;
	}

	CHIP_ERROR pychip_DeviceController_DeleteDeviceController(chip::Controller::DeviceCommissioner * devCtrl)
	{
	if (devCtrl != NULL)
	{
	devCtrl->Shutdown();
	delete devCtrl;
	}

	return CHIP_NO_ERROR;
	}

	CHIP_ERROR pychip_DeviceController_GetAddressAndPort(chip::Controller::DeviceCommissioner * devCtrl, chip::NodeId nodeId,
	char * outAddress, uint64_t maxAddressLen, uint16_t * outPort)
	{
	Device * device;
	ReturnErrorOnFailure(devCtrl->GetDevice(nodeId, &device));

	Inet::IPAddress address;
	VerifyOrReturnError(device->GetAddress(address, *outPort), CHIP_ERROR_INCORRECT_STATE);
	VerifyOrReturnError(address.ToString(outAddress, maxAddressLen), CHIP_ERROR_BUFFER_TOO_SMALL);

	return CHIP_NO_ERROR;
	}

	const char * pychip_DeviceController_ErrorToString(CHIP_ERROR err)
	{
	return chip::ErrorStr(err);
	}

	const char * pychip_DeviceController_StatusReportToString(uint32_t profileId, uint16_t statusCode)
	{
	// return chip::StatusReportStr(profileId, statusCode);
	return NULL;
	}

	uint8_t pychip_DeviceController_GetLogFilter()
	{
	#if _CHIP_USE_LOGGING
	return chip::Logging::GetLogFilter();
	#else
	return chip::Logging::kLogCategory_None;
	#endif
	}

	void pychip_DeviceController_SetLogFilter(uint8_t category)
	{
	#if _CHIP_USE_LOGGING
	chip::Logging::SetLogFilter(category);
	#endif
	}

	CHIP_ERROR pychip_DeviceController_ConnectBLE(chip::Controller::DeviceCommissioner * devCtrl, uint16_t discriminator,
	uint32_t setupPINCode, chip::NodeId nodeid)
	{
	return devCtrl->PairDevice(nodeid,
	chip::RendezvousParameters()
	.SetPeerAddress(Transport::PeerAddress(Transport::Type::kBle))
	.SetSetupPINCode(setupPINCode)
	.SetDiscriminator(discriminator));
	}

	CHIP_ERROR pychip_DeviceController_ConnectIP(chip::Controller::DeviceCommissioner * devCtrl, const char * peerAddrStr,
	uint32_t setupPINCode, chip::NodeId nodeid)
	{
	CHIP_ERROR err = CHIP_NO_ERROR;
	chip::Inet::IPAddress peerAddr;
	chip::Transport::PeerAddress addr;
	chip::RendezvousParameters params = chip::RendezvousParameters().SetSetupPINCode(setupPINCode);

	VerifyOrReturnError(chip::Inet::IPAddress::FromString(peerAddrStr, peerAddr), err = CHIP_ERROR_INVALID_ARGUMENT);
	// TODO: IP rendezvous should use TCP connection.
	addr.SetTransportType(chip::Transport::Type::kUdp).SetIPAddress(peerAddr);
	params.SetPeerAddress(addr).SetDiscriminator(0);
	return devCtrl->PairDevice(nodeid, params);
	}

	CHIP_ERROR
	pychip_ScriptDevicePairingDelegate_SetWifiCredential(chip::Controller::DeviceCommissioner * devCtrl, const char * ssid,
	const char * password)
	{
	CHIP_ERROR err = CHIP_NO_ERROR;
	(void) devCtrl;

	VerifyOrExit(ssid != nullptr, err = CHIP_ERROR_INVALID_ARGUMENT);
	VerifyOrExit(password != nullptr, err = CHIP_ERROR_INVALID_ARGUMENT);

	sPairingDelegate.SetWifiCredential(ssid, password);

	exit:
	return err;
	}

	CHIP_ERROR
	pychip_ScriptDevicePairingDelegate_SetThreadCredential(chip::Controller::DeviceCommissioner * devCtrl, int channel, int panId,
	const char * masterKeyStr)
	{
	CHIP_ERROR err = CHIP_NO_ERROR;
	uint8_t masterKey[chip::Thread::kSizeMasterKey];
	(void) devCtrl;

	VerifyOrExit(strlen(masterKeyStr) == 2 * chip::Thread::kSizeMasterKey, err = CHIP_ERROR_INVALID_ARGUMENT);

	for (size_t i = 0; i < chip::Thread::kSizeMasterKey; i++)
	VerifyOrExit(sscanf(&masterKeyStr[2 * i], "%2hhx", &masterKey[i]) == 1, err = CHIP_ERROR_INVALID_ARGUMENT);

	sPairingDelegate.SetThreadCredential(channel, panId, masterKey);

	exit:
	return err;
	}

	CHIP_ERROR
	pychip_ScriptDevicePairingDelegate_SetKeyExchangeCallback(chip::Controller::DeviceCommissioner * devCtrl,
	chip::Controller::DevicePairingDelegate_OnPairingCompleteFunct callback)
	{
	sPairingDelegate.SetKeyExchangeCallback(callback);
	return CHIP_NO_ERROR;
	}

	void pychip_ScriptDeviceAddressUpdateDelegate_SetOnAddressUpdateComplete(
	chip::Controller::DeviceAddressUpdateDelegate_OnUpdateComplete callback)
	{
	sDeviceAddressUpdateDelegate.SetOnAddressUpdateComplete(callback);
	}

	CHIP_ERROR pychip_Resolver_ResolveNode(uint64_t fabricid, chip::NodeId nodeid)
	{
	return Mdns::Resolver::Instance().ResolveNodeId(PeerId().SetNodeId(nodeid).SetFabricId(fabricid), Inet::kIPAddressType_Any);
	}

	CHIP_ERROR pychip_Stack_Init()
	{
	CHIP_ERROR err = CHIP_NO_ERROR;

	err = chip::Platform::MemoryInit();
	SuccessOrExit(err);

	#if !CHIP_SYSTEM_CONFIG_USE_SOCKETS

	ExitNow(err = CHIP_ERROR_NOT_IMPLEMENTED);

	#else /* CHIP_SYSTEM_CONFIG_USE_SOCKETS */

	#endif /* CHIP_SYSTEM_CONFIG_USE_SOCKETS */

	exit:
	if (err != CHIP_NO_ERROR)
	pychip_Stack_Shutdown();

	return err;
	}

	CHIP_ERROR pychip_Stack_Shutdown()
	{
	return CHIP_NO_ERROR;
	}

	const char * pychip_Stack_ErrorToString(CHIP_ERROR err)
	{
	return chip::ErrorStr(err);
	}

	const char * pychip_Stack_StatusReportToString(uint32_t profileId, uint16_t statusCode)
	{
	// return chip::StatusReportStr(profileId, statusCode);
	return NULL;
	}

	CHIP_ERROR pychip_GetDeviceByNodeId(chip::Controller::DeviceCommissioner * devCtrl, chip::NodeId nodeId,
	chip::Controller::Device ** device)
	{
	VerifyOrReturnError(devCtrl != nullptr, CHIP_ERROR_INVALID_ARGUMENT);
	return devCtrl->GetDevice(nodeId, device);
	}

	CHIP_ERROR pychip_DeviceCommissioner_CloseBleConnection(chip::Controller::DeviceCommissioner * devCtrl)
	{
	#if CONFIG_NETWORK_LAYER_BLE
	return devCtrl->CloseBleConnection();
	#else
	return CHIP_ERROR_UNSUPPORTED_CHIP_FEATURE;
	#endif
	}

	uint64_t pychip_GetCommandSenderHandle(chip::Controller::Device * device)
	{
	chip::app::CommandSender * sender = device->GetCommandSender();
	return sender == nullptr ? 0 : reinterpret_cast<uint64_t>(sender);
	}

	void pychip_Stack_SetLogFunct(LogMessageFunct logFunct)
	{
	// TODO: determine if log redirection is supposed to be functioning in CHIP
	//
	// Background: original log baseline supported 'redirect logs to this
	// function' however CHIP does not currently provide this.
	//
	// Ideally log redirection should work so that python code can do things
	// like using the log module.
	}