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commissioner.cpp
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/*
* Copyright (c) 2016, The OpenThread Authors.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @file
* This file implements a Commissioner role.
*/
#include "commissioner.hpp"
#include <stdio.h>
#include "coap/coap_message.hpp"
#include "common/encoding.hpp"
#include "common/instance.hpp"
#include "common/locator-getters.hpp"
#include "common/logging.hpp"
#include "common/string.hpp"
#include "crypto/pbkdf2_cmac.h"
#include "meshcop/joiner_router.hpp"
#include "meshcop/meshcop.hpp"
#include "meshcop/meshcop_tlvs.hpp"
#include "thread/thread_netif.hpp"
#include "thread/thread_tlvs.hpp"
#include "thread/thread_uri_paths.hpp"
#if OPENTHREAD_FTD && OPENTHREAD_CONFIG_COMMISSIONER_ENABLE
namespace ot {
namespace MeshCoP {
Commissioner::Commissioner(Instance &aInstance)
: InstanceLocator(aInstance)
, mJoinerPort(0)
, mJoinerRloc(0)
, mSessionId(0)
, mJoinerIndex(0)
, mTransmitAttempts(0)
, mJoinerExpirationTimer(aInstance, HandleJoinerExpirationTimer, this)
, mTimer(aInstance, HandleTimer, this)
, mRelayReceive(OT_URI_PATH_RELAY_RX, &Commissioner::HandleRelayReceive, this)
, mDatasetChanged(OT_URI_PATH_DATASET_CHANGED, &Commissioner::HandleDatasetChanged, this)
, mJoinerFinalize(OT_URI_PATH_JOINER_FINALIZE, &Commissioner::HandleJoinerFinalize, this)
, mAnnounceBegin(aInstance)
, mEnergyScan(aInstance)
, mPanIdQuery(aInstance)
, mStateCallback(NULL)
, mJoinerCallback(NULL)
, mCallbackContext(NULL)
, mState(OT_COMMISSIONER_STATE_DISABLED)
{
memset(mJoiners, 0, sizeof(mJoiners));
mCommissionerAloc.Clear();
mCommissionerAloc.mPrefixLength = 64;
mCommissionerAloc.mPreferred = true;
mCommissionerAloc.mValid = true;
mCommissionerAloc.mScopeOverride = Ip6::Address::kRealmLocalScope;
mCommissionerAloc.mScopeOverrideValid = true;
mProvisioningUrl[0] = '\0';
}
void Commissioner::SetState(otCommissionerState aState)
{
VerifyOrExit(mState != aState);
otLogInfoMeshCoP("Commissioner State: %s -> %s", StateToString(mState), StateToString(aState));
mState = aState;
if (mStateCallback)
{
mStateCallback(mState, mCallbackContext);
}
exit:
return;
}
void Commissioner::SignalJoinerEvent(otCommissionerJoinerEvent aEvent, const Mac::ExtAddress &aJoinerId)
{
if (mJoinerCallback)
{
mJoinerCallback(aEvent, &aJoinerId, mCallbackContext);
}
}
void Commissioner::AddCoapResources(void)
{
Get<Coap::Coap>().AddResource(mRelayReceive);
Get<Coap::Coap>().AddResource(mDatasetChanged);
Get<Coap::CoapSecure>().AddResource(mJoinerFinalize);
}
void Commissioner::RemoveCoapResources(void)
{
Get<Coap::Coap>().RemoveResource(mRelayReceive);
Get<Coap::Coap>().RemoveResource(mDatasetChanged);
Get<Coap::CoapSecure>().RemoveResource(mJoinerFinalize);
}
void Commissioner::HandleCoapsConnected(bool aConnected, void *aContext)
{
static_cast<Commissioner *>(aContext)->HandleCoapsConnected(aConnected);
}
void Commissioner::HandleCoapsConnected(bool aConnected)
{
otCommissionerJoinerEvent event;
Mac::ExtAddress joinerId;
event = aConnected ? OT_COMMISSIONER_JOINER_CONNECTED : OT_COMMISSIONER_JOINER_END;
joinerId.Set(mJoinerIid);
joinerId.ToggleLocal();
SignalJoinerEvent(event, joinerId);
}
otError Commissioner::Start(otCommissionerStateCallback aStateCallback,
otCommissionerJoinerCallback aJoinerCallback,
void * aCallbackContext)
{
otError error = OT_ERROR_NONE;
VerifyOrExit(Get<Mle::MleRouter>().IsAttached(), error = OT_ERROR_INVALID_STATE);
VerifyOrExit(mState == OT_COMMISSIONER_STATE_DISABLED, error = OT_ERROR_INVALID_STATE);
SuccessOrExit(error = Get<Coap::CoapSecure>().Start(SendRelayTransmit, this));
Get<Coap::CoapSecure>().SetConnectedCallback(&Commissioner::HandleCoapsConnected, this);
mStateCallback = aStateCallback;
mJoinerCallback = aJoinerCallback;
mCallbackContext = aCallbackContext;
mTransmitAttempts = 0;
SuccessOrExit(error = SendPetition());
SetState(OT_COMMISSIONER_STATE_PETITION);
exit:
return error;
}
otError Commissioner::Stop(void)
{
otError error = OT_ERROR_NONE;
VerifyOrExit(mState != OT_COMMISSIONER_STATE_DISABLED, error = OT_ERROR_INVALID_STATE);
Get<Coap::CoapSecure>().Stop();
Get<ThreadNetif>().RemoveUnicastAddress(mCommissionerAloc);
RemoveCoapResources();
ClearJoiners();
mTransmitAttempts = 0;
mTimer.Stop();
SetState(OT_COMMISSIONER_STATE_DISABLED);
SendKeepAlive();
exit:
return error;
}
otError Commissioner::SendCommissionerSet(void)
{
otError error;
otCommissioningDataset dataset;
SteeringDataTlv steeringData;
Mac::ExtAddress joinerId;
VerifyOrExit(mState == OT_COMMISSIONER_STATE_ACTIVE, error = OT_ERROR_INVALID_STATE);
memset(&dataset, 0, sizeof(dataset));
// session id
dataset.mSessionId = mSessionId;
dataset.mIsSessionIdSet = true;
// compute bloom filter
steeringData.Init();
steeringData.Clear();
for (Joiner *joiner = &mJoiners[0]; joiner < OT_ARRAY_END(mJoiners); joiner++)
{
if (!joiner->mValid)
{
continue;
}
if (joiner->mAny)
{
steeringData.SetLength(1);
steeringData.Set();
break;
}
ComputeJoinerId(joiner->mEui64, joinerId);
steeringData.ComputeBloomFilter(joinerId);
}
// set bloom filter
dataset.mSteeringData.mLength = steeringData.GetSteeringDataLength();
memcpy(dataset.mSteeringData.m8, steeringData.GetValue(), dataset.mSteeringData.mLength);
dataset.mIsSteeringDataSet = true;
SuccessOrExit(error = SendMgmtCommissionerSetRequest(dataset, NULL, 0));
exit:
return error;
}
void Commissioner::ClearJoiners(void)
{
for (Joiner *joiner = &mJoiners[0]; joiner < OT_ARRAY_END(mJoiners); joiner++)
{
joiner->mValid = false;
}
SendCommissionerSet();
}
otError Commissioner::AddJoiner(const Mac::ExtAddress *aEui64, const char *aPskd, uint32_t aTimeout)
{
otError error = OT_ERROR_NO_BUFS;
VerifyOrExit(mState == OT_COMMISSIONER_STATE_ACTIVE, error = OT_ERROR_INVALID_STATE);
VerifyOrExit(StringLength(aPskd, Dtls::kPskMaxLength + 1) <= Dtls::kPskMaxLength, error = OT_ERROR_INVALID_ARGS);
RemoveJoiner(aEui64, 0); // remove immediately
for (Joiner *joiner = &mJoiners[0]; joiner < OT_ARRAY_END(mJoiners); joiner++)
{
if (joiner->mValid)
{
continue;
}
if (aEui64 != NULL)
{
joiner->mEui64 = *aEui64;
joiner->mAny = false;
}
else
{
joiner->mAny = true;
}
strncpy(joiner->mPsk, aPskd, sizeof(joiner->mPsk) - 1);
joiner->mValid = true;
joiner->mExpirationTime = TimerMilli::GetNow() + Time::SecToMsec(aTimeout);
UpdateJoinerExpirationTimer();
SendCommissionerSet();
otLogInfoMeshCoP("Added Joiner (%s, %s)", (aEui64 != NULL) ? aEui64->ToString().AsCString() : "*", aPskd);
ExitNow(error = OT_ERROR_NONE);
}
exit:
return error;
}
otError Commissioner::GetNextJoinerInfo(uint16_t &aIterator, otJoinerInfo &aJoiner) const
{
otError error = OT_ERROR_NONE;
size_t index;
for (index = aIterator; index < OT_ARRAY_LENGTH(mJoiners); index++)
{
if (!mJoiners[index].mValid)
{
continue;
}
memset(&aJoiner, 0, sizeof(aJoiner));
aJoiner.mAny = mJoiners[index].mAny;
aJoiner.mEui64 = mJoiners[index].mEui64;
strncpy(aJoiner.mPsk, mJoiners[index].mPsk, sizeof(aJoiner.mPsk) - 1);
aJoiner.mExpirationTime = mJoiners[index].mExpirationTime - TimerMilli::GetNow();
aIterator = static_cast<uint16_t>(index) + 1;
ExitNow();
}
error = OT_ERROR_NOT_FOUND;
exit:
return error;
}
otError Commissioner::RemoveJoiner(const Mac::ExtAddress *aEui64, uint32_t aDelay)
{
otError error = OT_ERROR_NOT_FOUND;
VerifyOrExit(mState == OT_COMMISSIONER_STATE_ACTIVE, error = OT_ERROR_INVALID_STATE);
for (Joiner *joiner = &mJoiners[0]; joiner < OT_ARRAY_END(mJoiners); joiner++)
{
if (!joiner->mValid)
{
continue;
}
if (aEui64 != NULL)
{
if (joiner->mEui64 != *aEui64)
{
continue;
}
}
else if (!joiner->mAny)
{
continue;
}
if (aDelay > 0)
{
TimeMilli now = TimerMilli::GetNow();
if ((joiner->mExpirationTime > now) && (joiner->mExpirationTime - now > Time::SecToMsec(aDelay)))
{
joiner->mExpirationTime = now + Time::SecToMsec(aDelay);
UpdateJoinerExpirationTimer();
}
}
else
{
Mac::ExtAddress joinerId;
joiner->mValid = false;
UpdateJoinerExpirationTimer();
SendCommissionerSet();
otLogInfoMeshCoP("Removed Joiner (%s)", (aEui64 != NULL) ? aEui64->ToString().AsCString() : "*");
ComputeJoinerId(joiner->mEui64, joinerId);
SignalJoinerEvent(OT_COMMISSIONER_JOINER_REMOVED, joinerId);
}
ExitNow(error = OT_ERROR_NONE);
}
exit:
return error;
}
otError Commissioner::SetProvisioningUrl(const char *aProvisioningUrl)
{
otError error = OT_ERROR_NONE;
uint8_t len;
if (aProvisioningUrl == NULL)
{
mProvisioningUrl[0] = '\0';
ExitNow();
}
len = static_cast<uint8_t>(StringLength(aProvisioningUrl, sizeof(mProvisioningUrl)));
VerifyOrExit(len < sizeof(mProvisioningUrl), error = OT_ERROR_INVALID_ARGS);
memcpy(mProvisioningUrl, aProvisioningUrl, len);
mProvisioningUrl[len] = '\0';
exit:
return error;
}
void Commissioner::HandleTimer(Timer &aTimer)
{
aTimer.GetOwner<Commissioner>().HandleTimer();
}
void Commissioner::HandleTimer(void)
{
switch (mState)
{
case OT_COMMISSIONER_STATE_DISABLED:
break;
case OT_COMMISSIONER_STATE_PETITION:
SendPetition();
break;
case OT_COMMISSIONER_STATE_ACTIVE:
SendKeepAlive();
break;
}
}
void Commissioner::HandleJoinerExpirationTimer(Timer &aTimer)
{
aTimer.GetOwner<Commissioner>().HandleJoinerExpirationTimer();
}
void Commissioner::HandleJoinerExpirationTimer(void)
{
TimeMilli now = TimerMilli::GetNow();
// Remove Joiners.
for (Joiner *joiner = &mJoiners[0]; joiner < OT_ARRAY_END(mJoiners); joiner++)
{
if (!joiner->mValid)
{
continue;
}
if (now >= joiner->mExpirationTime)
{
otLogDebgMeshCoP("removing joiner due to timeout or successfully joined");
RemoveJoiner(&joiner->mEui64, 0); // remove immediately
}
}
UpdateJoinerExpirationTimer();
}
void Commissioner::UpdateJoinerExpirationTimer(void)
{
TimeMilli now = TimerMilli::GetNow();
uint32_t nextTimeout = TimeMilli::kMaxDuration;
// Check if timer should be set for next Joiner.
for (Joiner *joiner = &mJoiners[0]; joiner < OT_ARRAY_END(mJoiners); joiner++)
{
uint32_t diff;
if (!joiner->mValid)
{
continue;
}
if (now >= joiner->mExpirationTime)
{
nextTimeout = 0;
break;
}
diff = joiner->mExpirationTime - now;
if (diff < nextTimeout)
{
nextTimeout = diff;
}
}
if (nextTimeout != TimeMilli::kMaxDuration)
{
// Update the timer to the timeout of the next Joiner.
mJoinerExpirationTimer.Start(nextTimeout);
}
else
{
// No Joiners, stop the timer.
mJoinerExpirationTimer.Stop();
}
}
otError Commissioner::SendMgmtCommissionerGetRequest(const uint8_t *aTlvs, uint8_t aLength)
{
otError error = OT_ERROR_NONE;
Coap::Message * message;
Ip6::MessageInfo messageInfo;
MeshCoP::Tlv tlv;
VerifyOrExit((message = NewMeshCoPMessage(Get<Coap::Coap>())) != NULL, error = OT_ERROR_NO_BUFS);
SuccessOrExit(error = message->Init(OT_COAP_TYPE_CONFIRMABLE, OT_COAP_CODE_POST, OT_URI_PATH_COMMISSIONER_GET));
if (aLength > 0)
{
SuccessOrExit(error = message->SetPayloadMarker());
}
if (aLength > 0)
{
tlv.SetType(MeshCoP::Tlv::kGet);
tlv.SetLength(aLength);
SuccessOrExit(error = message->Append(&tlv, sizeof(tlv)));
SuccessOrExit(error = message->Append(aTlvs, aLength));
}
messageInfo.SetSockAddr(Get<Mle::MleRouter>().GetMeshLocal16());
SuccessOrExit(error = Get<Mle::MleRouter>().GetLeaderAloc(messageInfo.GetPeerAddr()));
messageInfo.SetPeerPort(kCoapUdpPort);
SuccessOrExit(error = Get<Coap::Coap>().SendMessage(*message, messageInfo,
Commissioner::HandleMgmtCommissionerGetResponse, this));
otLogInfoMeshCoP("sent MGMT_COMMISSIONER_GET.req to leader");
exit:
if (error != OT_ERROR_NONE && message != NULL)
{
message->Free();
}
return error;
}
void Commissioner::HandleMgmtCommissionerGetResponse(void * aContext,
otMessage * aMessage,
const otMessageInfo *aMessageInfo,
otError aResult)
{
static_cast<Commissioner *>(aContext)->HandleMgmtCommissionerGetResponse(
static_cast<Coap::Message *>(aMessage), static_cast<const Ip6::MessageInfo *>(aMessageInfo), aResult);
}
void Commissioner::HandleMgmtCommissionerGetResponse(Coap::Message * aMessage,
const Ip6::MessageInfo *aMessageInfo,
otError aResult)
{
OT_UNUSED_VARIABLE(aMessageInfo);
VerifyOrExit(aResult == OT_ERROR_NONE && aMessage->GetCode() == OT_COAP_CODE_CHANGED);
otLogInfoMeshCoP("received MGMT_COMMISSIONER_GET response");
exit:
return;
}
otError Commissioner::SendMgmtCommissionerSetRequest(const otCommissioningDataset &aDataset,
const uint8_t * aTlvs,
uint8_t aLength)
{
otError error = OT_ERROR_NONE;
Coap::Message * message;
Ip6::MessageInfo messageInfo;
VerifyOrExit((message = NewMeshCoPMessage(Get<Coap::Coap>())) != NULL, error = OT_ERROR_NO_BUFS);
SuccessOrExit(error = message->Init(OT_COAP_TYPE_CONFIRMABLE, OT_COAP_CODE_POST, OT_URI_PATH_COMMISSIONER_SET));
SuccessOrExit(error = message->SetPayloadMarker());
if (aDataset.mIsLocatorSet)
{
SuccessOrExit(error = Tlv::AppendUint16Tlv(*message, MeshCoP::Tlv::kBorderAgentLocator, aDataset.mLocator));
}
if (aDataset.mIsSessionIdSet)
{
SuccessOrExit(error =
Tlv::AppendUint16Tlv(*message, MeshCoP::Tlv::kCommissionerSessionId, aDataset.mSessionId));
}
if (aDataset.mIsSteeringDataSet)
{
MeshCoP::SteeringDataTlv steeringData;
steeringData.Init();
steeringData.SetLength(aDataset.mSteeringData.mLength);
SuccessOrExit(error = message->Append(&steeringData, sizeof(MeshCoP::Tlv)));
SuccessOrExit(error = message->Append(&aDataset.mSteeringData.m8, aDataset.mSteeringData.mLength));
}
if (aDataset.mIsJoinerUdpPortSet)
{
SuccessOrExit(error = Tlv::AppendUint16Tlv(*message, Tlv::kJoinerUdpPort, aDataset.mJoinerUdpPort));
}
if (aLength > 0)
{
SuccessOrExit(error = message->Append(aTlvs, aLength));
}
if (message->GetLength() == message->GetOffset())
{
// no payload, remove coap payload marker
message->SetLength(message->GetLength() - 1);
}
messageInfo.SetSockAddr(Get<Mle::MleRouter>().GetMeshLocal16());
SuccessOrExit(error = Get<Mle::MleRouter>().GetLeaderAloc(messageInfo.GetPeerAddr()));
messageInfo.SetPeerPort(kCoapUdpPort);
SuccessOrExit(error = Get<Coap::Coap>().SendMessage(*message, messageInfo,
Commissioner::HandleMgmtCommissionerSetResponse, this));
otLogInfoMeshCoP("sent MGMT_COMMISSIONER_SET.req to leader");
exit:
if (error != OT_ERROR_NONE && message != NULL)
{
message->Free();
}
return error;
}
void Commissioner::HandleMgmtCommissionerSetResponse(void * aContext,
otMessage * aMessage,
const otMessageInfo *aMessageInfo,
otError aResult)
{
static_cast<Commissioner *>(aContext)->HandleMgmtCommissionerSetResponse(
static_cast<Coap::Message *>(aMessage), static_cast<const Ip6::MessageInfo *>(aMessageInfo), aResult);
}
void Commissioner::HandleMgmtCommissionerSetResponse(Coap::Message * aMessage,
const Ip6::MessageInfo *aMessageInfo,
otError aResult)
{
OT_UNUSED_VARIABLE(aMessageInfo);
VerifyOrExit(aResult == OT_ERROR_NONE && aMessage->GetCode() == OT_COAP_CODE_CHANGED);
otLogInfoMeshCoP("received MGMT_COMMISSIONER_SET response");
exit:
return;
}
otError Commissioner::SendPetition(void)
{
otError error = OT_ERROR_NONE;
Coap::Message * message = NULL;
Ip6::MessageInfo messageInfo;
CommissionerIdTlv commissionerId;
mTransmitAttempts++;
VerifyOrExit((message = NewMeshCoPMessage(Get<Coap::Coap>())) != NULL, error = OT_ERROR_NO_BUFS);
SuccessOrExit(error = message->Init(OT_COAP_TYPE_CONFIRMABLE, OT_COAP_CODE_POST, OT_URI_PATH_LEADER_PETITION));
SuccessOrExit(error = message->SetPayloadMarker());
commissionerId.Init();
commissionerId.SetCommissionerId("OpenThread Commissioner");
SuccessOrExit(error = commissionerId.AppendTo(*message));
SuccessOrExit(error = Get<Mle::MleRouter>().GetLeaderAloc(messageInfo.GetPeerAddr()));
messageInfo.SetPeerPort(kCoapUdpPort);
messageInfo.SetSockAddr(Get<Mle::MleRouter>().GetMeshLocal16());
SuccessOrExit(
error = Get<Coap::Coap>().SendMessage(*message, messageInfo, Commissioner::HandleLeaderPetitionResponse, this));
otLogInfoMeshCoP("sent petition");
exit:
if (error != OT_ERROR_NONE && message != NULL)
{
message->Free();
}
return error;
}
void Commissioner::HandleLeaderPetitionResponse(void * aContext,
otMessage * aMessage,
const otMessageInfo *aMessageInfo,
otError aResult)
{
static_cast<Commissioner *>(aContext)->HandleLeaderPetitionResponse(
static_cast<Coap::Message *>(aMessage), static_cast<const Ip6::MessageInfo *>(aMessageInfo), aResult);
}
void Commissioner::HandleLeaderPetitionResponse(Coap::Message * aMessage,
const Ip6::MessageInfo *aMessageInfo,
otError aResult)
{
OT_UNUSED_VARIABLE(aMessageInfo);
uint8_t state;
bool retransmit = false;
VerifyOrExit(mState == OT_COMMISSIONER_STATE_PETITION, SetState(OT_COMMISSIONER_STATE_DISABLED));
VerifyOrExit(aResult == OT_ERROR_NONE && aMessage->GetCode() == OT_COAP_CODE_CHANGED, retransmit = true);
otLogInfoMeshCoP("received Leader Petition response");
SuccessOrExit(Tlv::ReadUint8Tlv(*aMessage, Tlv::kState, state));
VerifyOrExit(state == StateTlv::kAccept, SetState(OT_COMMISSIONER_STATE_DISABLED));
SuccessOrExit(Tlv::ReadUint16Tlv(*aMessage, Tlv::kCommissionerSessionId, mSessionId));
Get<Mle::MleRouter>().GetCommissionerAloc(mCommissionerAloc.GetAddress(), mSessionId);
Get<ThreadNetif>().AddUnicastAddress(mCommissionerAloc);
AddCoapResources();
SetState(OT_COMMISSIONER_STATE_ACTIVE);
mTransmitAttempts = 0;
mTimer.Start(Time::SecToMsec(kKeepAliveTimeout) / 2);
exit:
if (retransmit)
{
if (mTransmitAttempts >= kPetitionRetryCount)
{
SetState(OT_COMMISSIONER_STATE_DISABLED);
}
else
{
mTimer.Start(Time::SecToMsec(kPetitionRetryDelay));
}
}
}
otError Commissioner::SendKeepAlive(void)
{
otError error = OT_ERROR_NONE;
Coap::Message * message = NULL;
Ip6::MessageInfo messageInfo;
VerifyOrExit((message = NewMeshCoPMessage(Get<Coap::Coap>())) != NULL, error = OT_ERROR_NO_BUFS);
SuccessOrExit(error = message->Init(OT_COAP_TYPE_CONFIRMABLE, OT_COAP_CODE_POST, OT_URI_PATH_LEADER_KEEP_ALIVE));
SuccessOrExit(error = message->SetPayloadMarker());
SuccessOrExit(
error = Tlv::AppendUint8Tlv(*message, Tlv::kState,
(mState == OT_COMMISSIONER_STATE_ACTIVE) ? StateTlv::kAccept : StateTlv::kReject));
SuccessOrExit(error = Tlv::AppendUint16Tlv(*message, Tlv::kCommissionerSessionId, mSessionId));
messageInfo.SetSockAddr(Get<Mle::MleRouter>().GetMeshLocal16());
SuccessOrExit(error = Get<Mle::MleRouter>().GetLeaderAloc(messageInfo.GetPeerAddr()));
messageInfo.SetPeerPort(kCoapUdpPort);
SuccessOrExit(error = Get<Coap::Coap>().SendMessage(*message, messageInfo,
Commissioner::HandleLeaderKeepAliveResponse, this));
otLogInfoMeshCoP("sent keep alive");
exit:
if (error != OT_ERROR_NONE && message != NULL)
{
message->Free();
}
return error;
}
void Commissioner::HandleLeaderKeepAliveResponse(void * aContext,
otMessage * aMessage,
const otMessageInfo *aMessageInfo,
otError aResult)
{
static_cast<Commissioner *>(aContext)->HandleLeaderKeepAliveResponse(
static_cast<Coap::Message *>(aMessage), static_cast<const Ip6::MessageInfo *>(aMessageInfo), aResult);
}
void Commissioner::HandleLeaderKeepAliveResponse(Coap::Message * aMessage,
const Ip6::MessageInfo *aMessageInfo,
otError aResult)
{
OT_UNUSED_VARIABLE(aMessageInfo);
uint8_t state;
VerifyOrExit(mState == OT_COMMISSIONER_STATE_ACTIVE, SetState(OT_COMMISSIONER_STATE_DISABLED));
VerifyOrExit(aResult == OT_ERROR_NONE && aMessage->GetCode() == OT_COAP_CODE_CHANGED,
SetState(OT_COMMISSIONER_STATE_DISABLED));
otLogInfoMeshCoP("received Leader keep-alive response");
SuccessOrExit(Tlv::ReadUint8Tlv(*aMessage, Tlv::kState, state));
VerifyOrExit(state == StateTlv::kAccept, SetState(OT_COMMISSIONER_STATE_DISABLED));
mTimer.Start(Time::SecToMsec(kKeepAliveTimeout) / 2);
exit:
if (mState != OT_COMMISSIONER_STATE_ACTIVE)
{
Get<ThreadNetif>().RemoveUnicastAddress(mCommissionerAloc);
RemoveCoapResources();
}
}
void Commissioner::HandleRelayReceive(void *aContext, otMessage *aMessage, const otMessageInfo *aMessageInfo)
{
static_cast<Commissioner *>(aContext)->HandleRelayReceive(*static_cast<Coap::Message *>(aMessage),
*static_cast<const Ip6::MessageInfo *>(aMessageInfo));
}
void Commissioner::HandleRelayReceive(Coap::Message &aMessage, const Ip6::MessageInfo &aMessageInfo)
{
OT_UNUSED_VARIABLE(aMessageInfo);
otError error;
uint16_t joinerPort;
uint8_t joinerIid[Ip6::Address::kInterfaceIdentifierSize];
uint16_t joinerRloc;
Ip6::MessageInfo joinerMessageInfo;
uint16_t offset;
uint16_t length;
bool enableJoiner = false;
Mac::ExtAddress receivedId;
Mac::ExtAddress joinerId;
VerifyOrExit(mState == OT_COMMISSIONER_STATE_ACTIVE, error = OT_ERROR_INVALID_STATE);
VerifyOrExit(aMessage.GetType() == OT_COAP_TYPE_NON_CONFIRMABLE && aMessage.GetCode() == OT_COAP_CODE_POST);
SuccessOrExit(error = Tlv::ReadUint16Tlv(aMessage, Tlv::kJoinerUdpPort, joinerPort));
SuccessOrExit(error = Tlv::ReadTlv(aMessage, Tlv::kJoinerIid, joinerIid, sizeof(joinerIid)));
SuccessOrExit(error = Tlv::ReadUint16Tlv(aMessage, Tlv::kJoinerRouterLocator, joinerRloc));
SuccessOrExit(error = Tlv::GetValueOffset(aMessage, Tlv::kJoinerDtlsEncapsulation, offset, length));
VerifyOrExit(length <= aMessage.GetLength() - offset, error = OT_ERROR_PARSE);
if (!Get<Coap::CoapSecure>().IsConnectionActive())
{
memcpy(mJoinerIid, joinerIid, sizeof(mJoinerIid));
receivedId.Set(mJoinerIid);
receivedId.ToggleLocal();
for (Joiner *joiner = &mJoiners[0]; joiner < OT_ARRAY_END(mJoiners); joiner++)
{
if (!joiner->mValid)
{
continue;
}
ComputeJoinerId(joiner->mEui64, joinerId);
if (joiner->mAny || (joinerId == receivedId))
{
error = Get<Coap::CoapSecure>().SetPsk(reinterpret_cast<const uint8_t *>(joiner->mPsk),
static_cast<uint8_t>(strlen(joiner->mPsk)));
SuccessOrExit(error);
mJoinerIndex = static_cast<uint8_t>(joiner - mJoiners);
enableJoiner = true;
otLogInfoMeshCoP("found joiner, starting new session");
SignalJoinerEvent(OT_COMMISSIONER_JOINER_START, joinerId);
break;
}
}
}
else
{
enableJoiner = (memcmp(mJoinerIid, joinerIid, sizeof(mJoinerIid)) == 0);
}
VerifyOrExit(enableJoiner);
mJoinerPort = joinerPort;
mJoinerRloc = joinerRloc;
otLogInfoMeshCoP("Remove Relay Receive (%02x%02x%02x%02x%02x%02x%02x%02x, 0x%04x)", mJoinerIid[0], mJoinerIid[1],
mJoinerIid[2], mJoinerIid[3], mJoinerIid[4], mJoinerIid[5], mJoinerIid[6], mJoinerIid[7],
mJoinerRloc);
aMessage.SetOffset(offset);
SuccessOrExit(error = aMessage.SetLength(offset + length));
joinerMessageInfo.SetPeerAddr(Get<Mle::MleRouter>().GetMeshLocal64());
joinerMessageInfo.GetPeerAddr().SetIid(mJoinerIid);
joinerMessageInfo.SetPeerPort(mJoinerPort);
Get<Coap::CoapSecure>().HandleUdpReceive(aMessage, joinerMessageInfo);
exit:
return;
}
void Commissioner::HandleDatasetChanged(void *aContext, otMessage *aMessage, const otMessageInfo *aMessageInfo)
{
static_cast<Commissioner *>(aContext)->HandleDatasetChanged(*static_cast<Coap::Message *>(aMessage),
*static_cast<const Ip6::MessageInfo *>(aMessageInfo));
}
void Commissioner::HandleDatasetChanged(Coap::Message &aMessage, const Ip6::MessageInfo &aMessageInfo)
{
VerifyOrExit(aMessage.GetType() == OT_COAP_TYPE_CONFIRMABLE && aMessage.GetCode() == OT_COAP_CODE_POST);
otLogInfoMeshCoP("received dataset changed");
SuccessOrExit(Get<Coap::Coap>().SendEmptyAck(aMessage, aMessageInfo));
otLogInfoMeshCoP("sent dataset changed acknowledgment");
exit:
return;
}
void Commissioner::HandleJoinerFinalize(void *aContext, otMessage *aMessage, const otMessageInfo *aMessageInfo)
{
static_cast<Commissioner *>(aContext)->HandleJoinerFinalize(*static_cast<Coap::Message *>(aMessage),
*static_cast<const Ip6::MessageInfo *>(aMessageInfo));
}
void Commissioner::HandleJoinerFinalize(Coap::Message &aMessage, const Ip6::MessageInfo &aMessageInfo)
{
OT_UNUSED_VARIABLE(aMessageInfo);
StateTlv::State state = StateTlv::kAccept;
ProvisioningUrlTlv provisioningUrl;
otLogInfoMeshCoP("received joiner finalize");
if (Tlv::GetTlv(aMessage, Tlv::kProvisioningUrl, sizeof(provisioningUrl), provisioningUrl) == OT_ERROR_NONE)
{
uint8_t len = static_cast<uint8_t>(StringLength(mProvisioningUrl, sizeof(mProvisioningUrl)));
if ((provisioningUrl.GetProvisioningUrlLength() != len) ||
!memcmp(provisioningUrl.GetProvisioningUrl(), mProvisioningUrl, len))
{
state = StateTlv::kReject;
}
}
#if OPENTHREAD_CONFIG_REFERENCE_DEVICE_ENABLE
if (aMessage.GetLength() <= OPENTHREAD_CONFIG_MESSAGE_BUFFER_SIZE)
{
uint8_t buf[OPENTHREAD_CONFIG_MESSAGE_BUFFER_SIZE];
aMessage.Read(aMessage.GetOffset(), aMessage.GetLength() - aMessage.GetOffset(), buf);
otDumpCertMeshCoP("[THCI] direction=recv | type=JOIN_FIN.req |", buf,
aMessage.GetLength() - aMessage.GetOffset());
}
#endif
SendJoinFinalizeResponse(aMessage, state);
}
void Commissioner::SendJoinFinalizeResponse(const Coap::Message &aRequest, StateTlv::State aState)
{
otError error = OT_ERROR_NONE;
Ip6::MessageInfo joinerMessageInfo;
Coap::Message * message;
Mac::ExtAddress joinerId;
VerifyOrExit((message = NewMeshCoPMessage(Get<Coap::CoapSecure>())) != NULL, error = OT_ERROR_NO_BUFS);
SuccessOrExit(error = message->SetDefaultResponseHeader(aRequest));
SuccessOrExit(error = message->SetPayloadMarker());
message->SetOffset(message->GetLength());
message->SetSubType(Message::kSubTypeJoinerFinalizeResponse);
SuccessOrExit(error = Tlv::AppendUint8Tlv(*message, Tlv::kState, static_cast<uint8_t>(aState)));
joinerMessageInfo.SetPeerAddr(Get<Mle::MleRouter>().GetMeshLocal64());
joinerMessageInfo.GetPeerAddr().SetIid(mJoinerIid);
joinerMessageInfo.SetPeerPort(mJoinerPort);
#if OPENTHREAD_CONFIG_REFERENCE_DEVICE_ENABLE
uint8_t buf[OPENTHREAD_CONFIG_MESSAGE_BUFFER_SIZE];
VerifyOrExit(message->GetLength() <= sizeof(buf));
message->Read(message->GetOffset(), message->GetLength() - message->GetOffset(), buf);
otDumpCertMeshCoP("[THCI] direction=send | type=JOIN_FIN.rsp |", buf, message->GetLength() - message->GetOffset());
#endif
SuccessOrExit(error = Get<Coap::CoapSecure>().SendMessage(*message, joinerMessageInfo));
joinerId.Set(mJoinerIid);
joinerId.ToggleLocal();
SignalJoinerEvent(OT_COMMISSIONER_JOINER_FINALIZE, joinerId);
if (!mJoiners[mJoinerIndex].mAny)
{
// remove after kRemoveJoinerDelay (seconds)
RemoveJoiner(&mJoiners[mJoinerIndex].mEui64, kRemoveJoinerDelay);
}
otLogInfoMeshCoP("sent joiner finalize response");
exit:
if (error != OT_ERROR_NONE && message != NULL)
{