| /* |
| * 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 MeshCoP Leader. |
| */ |
| |
| #include "meshcop_leader.hpp" |
| |
| #if OPENTHREAD_FTD |
| |
| #include <stdio.h> |
| |
| #include "coap/coap_message.hpp" |
| #include "common/as_core_type.hpp" |
| #include "common/code_utils.hpp" |
| #include "common/locator_getters.hpp" |
| #include "common/log.hpp" |
| #include "common/random.hpp" |
| #include "instance/instance.hpp" |
| #include "meshcop/meshcop.hpp" |
| #include "meshcop/meshcop_tlvs.hpp" |
| #include "thread/thread_netif.hpp" |
| #include "thread/thread_tlvs.hpp" |
| #include "thread/uri_paths.hpp" |
| |
| namespace ot { |
| namespace MeshCoP { |
| |
| RegisterLogModule("MeshCoPLeader"); |
| |
| Leader::Leader(Instance &aInstance) |
| : InstanceLocator(aInstance) |
| , mTimer(aInstance) |
| , mDelayTimerMinimal(kMinDelayTimer) |
| , mSessionId(Random::NonCrypto::GetUint16()) |
| { |
| } |
| |
| template <> void Leader::HandleTmf<kUriLeaderPetition>(Coap::Message &aMessage, const Ip6::MessageInfo &aMessageInfo) |
| { |
| OT_UNUSED_VARIABLE(aMessageInfo); |
| |
| CommissioningData data; |
| CommissionerIdTlv::StringType commissionerId; |
| StateTlv::State state = StateTlv::kReject; |
| |
| LogInfo("Received %s", UriToString<kUriLeaderPetition>()); |
| |
| VerifyOrExit(Get<Mle::MleRouter>().IsLeader()); |
| |
| VerifyOrExit(Get<Mle::MleRouter>().IsRoutingLocator(aMessageInfo.GetPeerAddr())); |
| |
| SuccessOrExit(Tlv::Find<CommissionerIdTlv>(aMessage, commissionerId)); |
| |
| if (mTimer.IsRunning()) |
| { |
| VerifyOrExit(StringMatch(mCommissionerId, commissionerId)); |
| ResignCommissioner(); |
| } |
| |
| data.Init(aMessageInfo.GetPeerAddr().GetIid().GetLocator(), ++mSessionId); |
| SuccessOrExit(Get<NetworkData::Leader>().SetCommissioningData(&data, data.GetLength())); |
| |
| IgnoreError(StringCopy(mCommissionerId, commissionerId)); |
| |
| state = StateTlv::kAccept; |
| mTimer.Start(Time::SecToMsec(kTimeoutLeaderPetition)); |
| |
| exit: |
| SendPetitionResponse(aMessage, aMessageInfo, state); |
| } |
| |
| void Leader::SendPetitionResponse(const Coap::Message &aRequest, |
| const Ip6::MessageInfo &aMessageInfo, |
| StateTlv::State aState) |
| { |
| Error error = kErrorNone; |
| Coap::Message *message; |
| |
| message = Get<Tmf::Agent>().NewPriorityResponseMessage(aRequest); |
| VerifyOrExit(message != nullptr, error = kErrorNoBufs); |
| |
| SuccessOrExit(error = Tlv::Append<StateTlv>(*message, aState)); |
| |
| if (mTimer.IsRunning()) |
| { |
| SuccessOrExit(error = Tlv::Append<CommissionerIdTlv>(*message, mCommissionerId)); |
| } |
| |
| if (aState == StateTlv::kAccept) |
| { |
| SuccessOrExit(error = Tlv::Append<CommissionerSessionIdTlv>(*message, mSessionId)); |
| } |
| |
| SuccessOrExit(error = Get<Tmf::Agent>().SendMessage(*message, aMessageInfo)); |
| |
| LogInfo("Sent %s response", UriToString<kUriLeaderPetition>()); |
| |
| exit: |
| FreeMessageOnError(message, error); |
| LogError("send petition response", error); |
| } |
| |
| template <> void Leader::HandleTmf<kUriLeaderKeepAlive>(Coap::Message &aMessage, const Ip6::MessageInfo &aMessageInfo) |
| { |
| uint8_t state; |
| uint16_t sessionId; |
| BorderAgentLocatorTlv *borderAgentLocator; |
| StateTlv::State responseState; |
| |
| LogInfo("Received %s", UriToString<kUriLeaderKeepAlive>()); |
| |
| VerifyOrExit(Get<Mle::MleRouter>().IsLeader()); |
| |
| SuccessOrExit(Tlv::Find<StateTlv>(aMessage, state)); |
| |
| SuccessOrExit(Tlv::Find<CommissionerSessionIdTlv>(aMessage, sessionId)); |
| |
| borderAgentLocator = Get<NetworkData::Leader>().FindInCommissioningData<BorderAgentLocatorTlv>(); |
| |
| if ((borderAgentLocator == nullptr) || (sessionId != mSessionId)) |
| { |
| responseState = StateTlv::kReject; |
| } |
| else if (state != StateTlv::kAccept) |
| { |
| responseState = StateTlv::kReject; |
| ResignCommissioner(); |
| } |
| else |
| { |
| uint16_t rloc = aMessageInfo.GetPeerAddr().GetIid().GetLocator(); |
| |
| if (borderAgentLocator->GetBorderAgentLocator() != rloc) |
| { |
| borderAgentLocator->SetBorderAgentLocator(rloc); |
| Get<NetworkData::Leader>().IncrementVersion(); |
| } |
| |
| responseState = StateTlv::kAccept; |
| mTimer.Start(Time::SecToMsec(kTimeoutLeaderPetition)); |
| } |
| |
| SendKeepAliveResponse(aMessage, aMessageInfo, responseState); |
| |
| exit: |
| return; |
| } |
| |
| void Leader::SendKeepAliveResponse(const Coap::Message &aRequest, |
| const Ip6::MessageInfo &aMessageInfo, |
| StateTlv::State aState) |
| { |
| Error error = kErrorNone; |
| Coap::Message *message; |
| |
| message = Get<Tmf::Agent>().NewPriorityResponseMessage(aRequest); |
| VerifyOrExit(message != nullptr, error = kErrorNoBufs); |
| |
| SuccessOrExit(error = Tlv::Append<StateTlv>(*message, aState)); |
| |
| SuccessOrExit(error = Get<Tmf::Agent>().SendMessage(*message, aMessageInfo)); |
| |
| LogInfo("Sent %s response", UriToString<kUriLeaderKeepAlive>()); |
| |
| exit: |
| FreeMessageOnError(message, error); |
| LogError("send keep alive response", error); |
| } |
| |
| void Leader::SendDatasetChanged(const Ip6::Address &aAddress) |
| { |
| Error error = kErrorNone; |
| Tmf::MessageInfo messageInfo(GetInstance()); |
| Coap::Message *message; |
| |
| message = Get<Tmf::Agent>().NewPriorityConfirmablePostMessage(kUriDatasetChanged); |
| VerifyOrExit(message != nullptr, error = kErrorNoBufs); |
| |
| messageInfo.SetSockAddrToRlocPeerAddrTo(aAddress); |
| SuccessOrExit(error = Get<Tmf::Agent>().SendMessage(*message, messageInfo)); |
| |
| LogInfo("Sent %s", UriToString<kUriDatasetChanged>()); |
| |
| exit: |
| FreeMessageOnError(message, error); |
| LogError("send dataset changed", error); |
| } |
| |
| Error Leader::SetDelayTimerMinimal(uint32_t aDelayTimerMinimal) |
| { |
| Error error = kErrorNone; |
| |
| VerifyOrExit((aDelayTimerMinimal != 0 && aDelayTimerMinimal < kMinDelayTimer), error = kErrorInvalidArgs); |
| mDelayTimerMinimal = aDelayTimerMinimal; |
| |
| exit: |
| return error; |
| } |
| |
| void Leader::HandleTimer(void) |
| { |
| VerifyOrExit(Get<Mle::MleRouter>().IsLeader()); |
| |
| ResignCommissioner(); |
| |
| exit: |
| return; |
| } |
| |
| void Leader::SetEmptyCommissionerData(void) |
| { |
| CommissionerSessionIdTlv sessionIdTlv; |
| |
| sessionIdTlv.Init(); |
| sessionIdTlv.SetCommissionerSessionId(++mSessionId); |
| |
| IgnoreError(Get<NetworkData::Leader>().SetCommissioningData(&sessionIdTlv, sizeof(CommissionerSessionIdTlv))); |
| } |
| |
| void Leader::ResignCommissioner(void) |
| { |
| mTimer.Stop(); |
| SetEmptyCommissionerData(); |
| |
| LogInfo("commissioner inactive"); |
| } |
| |
| void Leader::CommissioningData::Init(uint16_t aBorderAgentRloc16, uint16_t aSessionId) |
| { |
| mBorderAgentLocatorTlv.Init(); |
| mBorderAgentLocatorTlv.SetBorderAgentLocator(aBorderAgentRloc16); |
| |
| mSessionIdTlv.Init(); |
| mSessionIdTlv.SetCommissionerSessionId(aSessionId); |
| |
| mSteeringDataTlv.Init(); |
| mSteeringDataTlv.SetLength(1); |
| mSteeringDataTlv.Clear(); |
| } |
| |
| uint8_t Leader::CommissioningData::GetLength(void) const |
| { |
| return static_cast<uint8_t>(sizeof(BorderAgentLocatorTlv) + sizeof(CommissionerSessionIdTlv) + |
| mSteeringDataTlv.GetSize()); |
| } |
| |
| } // namespace MeshCoP |
| } // namespace ot |
| |
| #endif // OPENTHREAD_FTD |