| /* |
| * 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 PAN ID Query Client. |
| */ |
| |
| #include "panid_query_client.hpp" |
| |
| #include "coap/coap_message.hpp" |
| #include "common/code_utils.hpp" |
| #include "common/debug.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/thread_netif.hpp" |
| #include "thread/thread_uri_paths.hpp" |
| |
| #if OPENTHREAD_CONFIG_COMMISSIONER_ENABLE && OPENTHREAD_FTD |
| |
| namespace ot { |
| |
| PanIdQueryClient::PanIdQueryClient(Instance &aInstance) |
| : InstanceLocator(aInstance) |
| , mCallback(nullptr) |
| , mContext(nullptr) |
| , mPanIdQuery(OT_URI_PATH_PANID_CONFLICT, &PanIdQueryClient::HandleConflict, this) |
| { |
| Get<Coap::Coap>().AddResource(mPanIdQuery); |
| } |
| |
| otError PanIdQueryClient::SendQuery(uint16_t aPanId, |
| uint32_t aChannelMask, |
| const Ip6::Address & aAddress, |
| otCommissionerPanIdConflictCallback aCallback, |
| void * aContext) |
| { |
| otError error = OT_ERROR_NONE; |
| MeshCoP::ChannelMaskTlv channelMask; |
| Ip6::MessageInfo messageInfo; |
| Coap::Message * message = nullptr; |
| |
| VerifyOrExit(Get<MeshCoP::Commissioner>().IsActive(), error = OT_ERROR_INVALID_STATE); |
| VerifyOrExit((message = MeshCoP::NewMeshCoPMessage(Get<Coap::Coap>())) != nullptr, error = OT_ERROR_NO_BUFS); |
| |
| SuccessOrExit(error = |
| message->Init(aAddress.IsMulticast() ? OT_COAP_TYPE_NON_CONFIRMABLE : OT_COAP_TYPE_CONFIRMABLE, |
| OT_COAP_CODE_POST, OT_URI_PATH_PANID_QUERY)); |
| SuccessOrExit(error = message->SetPayloadMarker()); |
| |
| SuccessOrExit(error = Tlv::AppendUint16Tlv(*message, MeshCoP::Tlv::kCommissionerSessionId, |
| Get<MeshCoP::Commissioner>().GetSessionId())); |
| |
| channelMask.Init(); |
| channelMask.SetChannelMask(aChannelMask); |
| SuccessOrExit(error = channelMask.AppendTo(*message)); |
| |
| SuccessOrExit(error = Tlv::AppendUint16Tlv(*message, MeshCoP::Tlv::kPanId, aPanId)); |
| |
| messageInfo.SetSockAddr(Get<Mle::MleRouter>().GetMeshLocal16()); |
| messageInfo.SetPeerAddr(aAddress); |
| messageInfo.SetPeerPort(kCoapUdpPort); |
| SuccessOrExit(error = Get<Coap::Coap>().SendMessage(*message, messageInfo)); |
| |
| otLogInfoMeshCoP("sent panid query"); |
| |
| mCallback = aCallback; |
| mContext = aContext; |
| |
| exit: |
| |
| if (error != OT_ERROR_NONE && message != nullptr) |
| { |
| message->Free(); |
| } |
| |
| return error; |
| } |
| |
| void PanIdQueryClient::HandleConflict(void *aContext, otMessage *aMessage, const otMessageInfo *aMessageInfo) |
| { |
| static_cast<PanIdQueryClient *>(aContext)->HandleConflict(*static_cast<Coap::Message *>(aMessage), |
| *static_cast<const Ip6::MessageInfo *>(aMessageInfo)); |
| } |
| |
| void PanIdQueryClient::HandleConflict(Coap::Message &aMessage, const Ip6::MessageInfo &aMessageInfo) |
| { |
| uint16_t panId; |
| Ip6::MessageInfo responseInfo(aMessageInfo); |
| uint32_t mask; |
| |
| VerifyOrExit(aMessage.IsConfirmable() && aMessage.GetCode() == OT_COAP_CODE_POST, OT_NOOP); |
| |
| otLogInfoMeshCoP("received panid conflict"); |
| |
| SuccessOrExit(Tlv::FindUint16Tlv(aMessage, MeshCoP::Tlv::kPanId, panId)); |
| |
| VerifyOrExit((mask = MeshCoP::ChannelMaskTlv::GetChannelMask(aMessage)) != 0, OT_NOOP); |
| |
| if (mCallback != nullptr) |
| { |
| mCallback(panId, mask, mContext); |
| } |
| |
| SuccessOrExit(Get<Coap::Coap>().SendEmptyAck(aMessage, responseInfo)); |
| |
| otLogInfoMeshCoP("sent panid query conflict response"); |
| |
| exit: |
| return; |
| } |
| |
| } // namespace ot |
| |
| #endif // OPENTHREAD_CONFIG_COMMISSIONER_ENABLE && OPENTHREAD_FTD |