| /* |
| * 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 the Joiner Router role. |
| */ |
| |
| #if OPENTHREAD_FTD |
| |
| #define WPP_NAME "joiner_router.tmh" |
| |
| #include "joiner_router.hpp" |
| |
| #include <stdio.h> |
| |
| #include "common/code_utils.hpp" |
| #include "common/encoding.hpp" |
| #include "common/instance.hpp" |
| #include "common/locator-getters.hpp" |
| #include "common/logging.hpp" |
| #include "meshcop/meshcop.hpp" |
| #include "meshcop/meshcop_tlvs.hpp" |
| #include "thread/mle.hpp" |
| #include "thread/thread_netif.hpp" |
| #include "thread/thread_uri_paths.hpp" |
| |
| using ot::Encoding::BigEndian::HostSwap16; |
| |
| namespace ot { |
| namespace MeshCoP { |
| |
| JoinerRouter::JoinerRouter(Instance &aInstance) |
| : InstanceLocator(aInstance) |
| , mSocket(aInstance.Get<Ip6::Udp>()) |
| , mRelayTransmit(OT_URI_PATH_RELAY_TX, &JoinerRouter::HandleRelayTransmit, this) |
| , mTimer(aInstance, &JoinerRouter::HandleTimer, this) |
| , mNotifierCallback(aInstance, &JoinerRouter::HandleStateChanged, this) |
| , mJoinerUdpPort(0) |
| , mIsJoinerPortConfigured(false) |
| , mExpectJoinEntRsp(false) |
| { |
| Get<Coap::Coap>().AddResource(mRelayTransmit); |
| } |
| |
| void JoinerRouter::HandleStateChanged(Notifier::Callback &aCallback, otChangedFlags aFlags) |
| { |
| aCallback.GetOwner<JoinerRouter>().HandleStateChanged(aFlags); |
| } |
| |
| void JoinerRouter::HandleStateChanged(otChangedFlags aFlags) |
| { |
| VerifyOrExit(Get<Mle::MleRouter>().IsFullThreadDevice()); |
| VerifyOrExit(aFlags & OT_CHANGED_THREAD_NETDATA); |
| |
| Get<Ip6::Filter>().RemoveUnsecurePort(mSocket.GetSockName().mPort); |
| |
| if (Get<NetworkData::Leader>().IsJoiningEnabled()) |
| { |
| Ip6::SockAddr sockaddr; |
| |
| sockaddr.mPort = GetJoinerUdpPort(); |
| |
| mSocket.Open(&JoinerRouter::HandleUdpReceive, this); |
| mSocket.Bind(sockaddr); |
| Get<Ip6::Filter>().AddUnsecurePort(sockaddr.mPort); |
| otLogInfoMeshCoP("Joiner Router: start"); |
| } |
| else |
| { |
| mSocket.Close(); |
| } |
| |
| exit: |
| return; |
| } |
| |
| uint16_t JoinerRouter::GetJoinerUdpPort(void) |
| { |
| uint16_t rval = OPENTHREAD_CONFIG_JOINER_UDP_PORT; |
| JoinerUdpPortTlv *joinerUdpPort; |
| |
| VerifyOrExit(!mIsJoinerPortConfigured, rval = mJoinerUdpPort); |
| |
| joinerUdpPort = |
| static_cast<JoinerUdpPortTlv *>(Get<NetworkData::Leader>().GetCommissioningDataSubTlv(Tlv::kJoinerUdpPort)); |
| VerifyOrExit(joinerUdpPort != NULL); |
| |
| rval = joinerUdpPort->GetUdpPort(); |
| |
| exit: |
| return rval; |
| } |
| |
| void JoinerRouter::SetJoinerUdpPort(uint16_t aJoinerUdpPort) |
| { |
| mJoinerUdpPort = aJoinerUdpPort; |
| mIsJoinerPortConfigured = true; |
| HandleStateChanged(OT_CHANGED_THREAD_NETDATA); |
| } |
| |
| void JoinerRouter::HandleUdpReceive(void *aContext, otMessage *aMessage, const otMessageInfo *aMessageInfo) |
| { |
| static_cast<JoinerRouter *>(aContext)->HandleUdpReceive(*static_cast<Message *>(aMessage), |
| *static_cast<const Ip6::MessageInfo *>(aMessageInfo)); |
| } |
| |
| void JoinerRouter::HandleUdpReceive(Message &aMessage, const Ip6::MessageInfo &aMessageInfo) |
| { |
| otError error; |
| Coap::Message * message = NULL; |
| Ip6::MessageInfo messageInfo; |
| JoinerUdpPortTlv udpPort; |
| JoinerIidTlv iid; |
| JoinerRouterLocatorTlv rloc; |
| ExtendedTlv tlv; |
| uint16_t borderAgentRloc; |
| uint16_t offset; |
| |
| otLogInfoMeshCoP("JoinerRouter::HandleUdpReceive"); |
| |
| SuccessOrExit(error = GetBorderAgentRloc(Get<ThreadNetif>(), borderAgentRloc)); |
| |
| VerifyOrExit((message = NewMeshCoPMessage(Get<Coap::Coap>())) != NULL, error = OT_ERROR_NO_BUFS); |
| |
| message->Init(OT_COAP_TYPE_NON_CONFIRMABLE, OT_COAP_CODE_POST); |
| message->SetToken(Coap::Message::kDefaultTokenLength); |
| message->AppendUriPathOptions(OT_URI_PATH_RELAY_RX); |
| message->SetPayloadMarker(); |
| |
| udpPort.Init(); |
| udpPort.SetUdpPort(aMessageInfo.GetPeerPort()); |
| SuccessOrExit(error = message->AppendTlv(udpPort)); |
| |
| iid.Init(); |
| iid.SetIid(aMessageInfo.GetPeerAddr().mFields.m8 + 8); |
| SuccessOrExit(error = message->AppendTlv(iid)); |
| |
| rloc.Init(); |
| rloc.SetJoinerRouterLocator(Get<Mle::MleRouter>().GetRloc16()); |
| SuccessOrExit(error = message->AppendTlv(rloc)); |
| |
| tlv.SetType(Tlv::kJoinerDtlsEncapsulation); |
| tlv.SetLength(aMessage.GetLength() - aMessage.GetOffset()); |
| SuccessOrExit(error = message->Append(&tlv, sizeof(tlv))); |
| offset = message->GetLength(); |
| SuccessOrExit(error = message->SetLength(offset + tlv.GetLength())); |
| aMessage.CopyTo(aMessage.GetOffset(), offset, tlv.GetLength(), *message); |
| |
| messageInfo.SetSockAddr(Get<Mle::MleRouter>().GetMeshLocal16()); |
| messageInfo.SetPeerAddr(Get<Mle::MleRouter>().GetMeshLocal16()); |
| messageInfo.GetPeerAddr().mFields.m16[7] = HostSwap16(borderAgentRloc); |
| messageInfo.SetPeerPort(kCoapUdpPort); |
| |
| SuccessOrExit(error = Get<Coap::Coap>().SendMessage(*message, messageInfo)); |
| |
| otLogInfoMeshCoP("Sent relay rx"); |
| |
| exit: |
| |
| if (error != OT_ERROR_NONE && message != NULL) |
| { |
| message->Free(); |
| } |
| } |
| |
| void JoinerRouter::HandleRelayTransmit(void *aContext, otMessage *aMessage, const otMessageInfo *aMessageInfo) |
| { |
| static_cast<JoinerRouter *>(aContext)->HandleRelayTransmit(*static_cast<Coap::Message *>(aMessage), |
| *static_cast<const Ip6::MessageInfo *>(aMessageInfo)); |
| } |
| |
| void JoinerRouter::HandleRelayTransmit(Coap::Message &aMessage, const Ip6::MessageInfo &aMessageInfo) |
| { |
| OT_UNUSED_VARIABLE(aMessageInfo); |
| |
| otError error; |
| JoinerUdpPortTlv joinerPort; |
| JoinerIidTlv joinerIid; |
| JoinerRouterKekTlv kek; |
| uint16_t offset; |
| uint16_t length; |
| Message * message = NULL; |
| otMessageSettings settings = {false, static_cast<otMessagePriority>(kMeshCoPMessagePriority)}; |
| Ip6::MessageInfo messageInfo; |
| |
| VerifyOrExit(aMessage.GetType() == OT_COAP_TYPE_NON_CONFIRMABLE && aMessage.GetCode() == OT_COAP_CODE_POST, |
| error = OT_ERROR_DROP); |
| |
| otLogInfoMeshCoP("Received relay transmit"); |
| |
| SuccessOrExit(error = Tlv::GetTlv(aMessage, Tlv::kJoinerUdpPort, sizeof(joinerPort), joinerPort)); |
| VerifyOrExit(joinerPort.IsValid(), error = OT_ERROR_PARSE); |
| |
| SuccessOrExit(error = Tlv::GetTlv(aMessage, Tlv::kJoinerIid, sizeof(joinerIid), joinerIid)); |
| VerifyOrExit(joinerIid.IsValid(), error = OT_ERROR_PARSE); |
| |
| SuccessOrExit(error = Tlv::GetValueOffset(aMessage, Tlv::kJoinerDtlsEncapsulation, offset, length)); |
| |
| VerifyOrExit((message = mSocket.NewMessage(0, &settings)) != NULL, error = OT_ERROR_NO_BUFS); |
| |
| while (length) |
| { |
| uint16_t copyLength = length; |
| uint8_t tmp[16]; |
| |
| if (copyLength >= sizeof(tmp)) |
| { |
| copyLength = sizeof(tmp); |
| } |
| |
| aMessage.Read(offset, copyLength, tmp); |
| SuccessOrExit(error = message->Append(tmp, copyLength)); |
| |
| offset += copyLength; |
| length -= copyLength; |
| } |
| |
| aMessage.CopyTo(offset, 0, length, *message); |
| |
| messageInfo.mPeerAddr.mFields.m16[0] = HostSwap16(0xfe80); |
| memcpy(messageInfo.mPeerAddr.mFields.m8 + 8, joinerIid.GetIid(), 8); |
| messageInfo.SetPeerPort(joinerPort.GetUdpPort()); |
| messageInfo.SetInterfaceId(Get<ThreadNetif>().GetInterfaceId()); |
| |
| SuccessOrExit(error = mSocket.SendTo(*message, messageInfo)); |
| |
| if (Tlv::GetTlv(aMessage, Tlv::kJoinerRouterKek, sizeof(kek), kek) == OT_ERROR_NONE) |
| { |
| otLogInfoMeshCoP("Received kek"); |
| |
| DelaySendingJoinerEntrust(messageInfo, kek); |
| } |
| |
| exit: |
| if (error != OT_ERROR_NONE && message != NULL) |
| { |
| message->Free(); |
| } |
| } |
| |
| otError JoinerRouter::DelaySendingJoinerEntrust(const Ip6::MessageInfo &aMessageInfo, const JoinerRouterKekTlv &aKek) |
| { |
| otError error; |
| Coap::Message * message = NULL; |
| Ip6::MessageInfo messageInfo; |
| Dataset dataset(MeshCoP::Tlv::kActiveTimestamp); |
| |
| NetworkMasterKeyTlv masterKey; |
| MeshLocalPrefixTlv meshLocalPrefix; |
| ExtendedPanIdTlv extendedPanId; |
| NetworkNameTlv networkName; |
| NetworkKeySequenceTlv networkKeySequence; |
| const Tlv * tlv; |
| |
| DelayedJoinEntHeader delayedMessage; |
| |
| VerifyOrExit((message = NewMeshCoPMessage(Get<Coap::Coap>())) != NULL, error = OT_ERROR_NO_BUFS); |
| |
| message->Init(OT_COAP_TYPE_CONFIRMABLE, OT_COAP_CODE_POST); |
| message->AppendUriPathOptions(OT_URI_PATH_JOINER_ENTRUST); |
| message->SetPayloadMarker(); |
| message->SetSubType(Message::kSubTypeJoinerEntrust); |
| |
| masterKey.Init(); |
| masterKey.SetNetworkMasterKey(Get<KeyManager>().GetMasterKey()); |
| SuccessOrExit(error = message->AppendTlv(masterKey)); |
| |
| meshLocalPrefix.Init(); |
| meshLocalPrefix.SetMeshLocalPrefix(Get<Mle::MleRouter>().GetMeshLocalPrefix()); |
| SuccessOrExit(error = message->AppendTlv(meshLocalPrefix)); |
| |
| extendedPanId.Init(); |
| extendedPanId.SetExtendedPanId(Get<Mac::Mac>().GetExtendedPanId()); |
| SuccessOrExit(error = message->AppendTlv(extendedPanId)); |
| |
| networkName.Init(); |
| networkName.SetNetworkName(Get<Mac::Mac>().GetNetworkName()); |
| SuccessOrExit(error = message->AppendTlv(networkName)); |
| |
| Get<ActiveDataset>().Read(dataset); |
| |
| if ((tlv = dataset.Get(Tlv::kActiveTimestamp)) != NULL) |
| { |
| SuccessOrExit(error = message->AppendTlv(*tlv)); |
| } |
| else |
| { |
| ActiveTimestampTlv activeTimestamp; |
| activeTimestamp.Init(); |
| SuccessOrExit(error = message->AppendTlv(activeTimestamp)); |
| } |
| |
| if ((tlv = dataset.Get(Tlv::kChannelMask)) != NULL) |
| { |
| SuccessOrExit(error = message->AppendTlv(*tlv)); |
| } |
| else |
| { |
| ChannelMaskBaseTlv channelMask; |
| channelMask.Init(); |
| SuccessOrExit(error = message->AppendTlv(channelMask)); |
| } |
| |
| if ((tlv = dataset.Get(Tlv::kPSKc)) != NULL) |
| { |
| SuccessOrExit(error = message->AppendTlv(*tlv)); |
| } |
| else |
| { |
| PSKcTlv pskc; |
| pskc.Init(); |
| SuccessOrExit(error = message->AppendTlv(pskc)); |
| } |
| |
| if ((tlv = dataset.Get(Tlv::kSecurityPolicy)) != NULL) |
| { |
| SuccessOrExit(error = message->AppendTlv(*tlv)); |
| } |
| else |
| { |
| SecurityPolicyTlv securityPolicy; |
| securityPolicy.Init(); |
| SuccessOrExit(error = message->AppendTlv(securityPolicy)); |
| } |
| |
| networkKeySequence.Init(); |
| networkKeySequence.SetNetworkKeySequence(Get<KeyManager>().GetCurrentKeySequence()); |
| SuccessOrExit(error = message->AppendTlv(networkKeySequence)); |
| |
| messageInfo = aMessageInfo; |
| messageInfo.SetPeerPort(kCoapUdpPort); |
| |
| delayedMessage = DelayedJoinEntHeader(TimerMilli::GetNow() + kDelayJoinEnt, messageInfo, aKek.GetKek()); |
| SuccessOrExit(delayedMessage.AppendTo(*message)); |
| mDelayedJoinEnts.Enqueue(*message); |
| |
| if (!mTimer.IsRunning()) |
| { |
| mTimer.Start(kDelayJoinEnt); |
| } |
| |
| exit: |
| |
| if (error != OT_ERROR_NONE && message != NULL) |
| { |
| message->Free(); |
| } |
| |
| return error; |
| } |
| |
| void JoinerRouter::HandleTimer(Timer &aTimer) |
| { |
| aTimer.GetOwner<JoinerRouter>().HandleTimer(); |
| } |
| |
| void JoinerRouter::HandleTimer(void) |
| { |
| SendDelayedJoinerEntrust(); |
| } |
| |
| void JoinerRouter::SendDelayedJoinerEntrust(void) |
| { |
| DelayedJoinEntHeader delayedJoinEnt; |
| Coap::Message * message = static_cast<Coap::Message *>(mDelayedJoinEnts.GetHead()); |
| uint32_t now = TimerMilli::GetNow(); |
| Ip6::MessageInfo messageInfo; |
| |
| VerifyOrExit(message != NULL); |
| VerifyOrExit(!mTimer.IsRunning()); |
| |
| delayedJoinEnt.ReadFrom(*message); |
| |
| // The message can be sent during CoAP transaction if KEK did not change (i.e. retransmission). |
| VerifyOrExit(!mExpectJoinEntRsp || |
| memcmp(Get<KeyManager>().GetKek(), delayedJoinEnt.GetKek(), KeyManager::kMaxKeyLength) == 0); |
| |
| if (delayedJoinEnt.IsLater(now)) |
| { |
| mTimer.Start(delayedJoinEnt.GetSendTime() - now); |
| } |
| else |
| { |
| mDelayedJoinEnts.Dequeue(*message); |
| |
| // Remove the DelayedJoinEntHeader from the message. |
| DelayedJoinEntHeader::RemoveFrom(*message); |
| |
| // Set KEK to one used for this message. |
| Get<KeyManager>().SetKek(delayedJoinEnt.GetKek()); |
| |
| // Send the message. |
| memcpy(&messageInfo, delayedJoinEnt.GetMessageInfo(), sizeof(messageInfo)); |
| |
| if (SendJoinerEntrust(*message, messageInfo) != OT_ERROR_NONE) |
| { |
| message->Free(); |
| mTimer.Start(0); |
| } |
| } |
| |
| exit: |
| return; |
| } |
| |
| otError JoinerRouter::SendJoinerEntrust(Coap::Message &aMessage, const Ip6::MessageInfo &aMessageInfo) |
| { |
| otError error; |
| |
| Get<Coap::Coap>().AbortTransaction(&JoinerRouter::HandleJoinerEntrustResponse, this); |
| |
| otLogInfoMeshCoP("Sending JOIN_ENT.ntf"); |
| SuccessOrExit(error = Get<Coap::Coap>().SendMessage(aMessage, aMessageInfo, |
| &JoinerRouter::HandleJoinerEntrustResponse, this)); |
| |
| otLogInfoMeshCoP("Sent joiner entrust length = %d", aMessage.GetLength()); |
| otLogCertMeshCoP("[THCI] direction=send | type=JOIN_ENT.ntf"); |
| |
| mExpectJoinEntRsp = true; |
| |
| exit: |
| return error; |
| } |
| |
| void JoinerRouter::HandleJoinerEntrustResponse(void * aContext, |
| otMessage * aMessage, |
| const otMessageInfo *aMessageInfo, |
| otError aResult) |
| { |
| static_cast<JoinerRouter *>(aContext)->HandleJoinerEntrustResponse( |
| static_cast<Coap::Message *>(aMessage), static_cast<const Ip6::MessageInfo *>(aMessageInfo), aResult); |
| } |
| |
| void JoinerRouter::HandleJoinerEntrustResponse(Coap::Message * aMessage, |
| const Ip6::MessageInfo *aMessageInfo, |
| otError aResult) |
| { |
| OT_UNUSED_VARIABLE(aMessageInfo); |
| |
| mExpectJoinEntRsp = false; |
| SendDelayedJoinerEntrust(); |
| |
| VerifyOrExit(aResult == OT_ERROR_NONE && aMessage != NULL); |
| |
| VerifyOrExit(aMessage->GetCode() == OT_COAP_CODE_CHANGED); |
| |
| otLogInfoMeshCoP("Receive joiner entrust response"); |
| otLogCertMeshCoP("[THCI] direction=recv | type=JOIN_ENT.rsp"); |
| |
| exit: |
| return; |
| } |
| |
| } // namespace MeshCoP |
| } // namespace ot |
| |
| #endif // OPENTHREAD_FTD |
