| /* |
| * 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. |
| */ |
| |
| #define WPP_NAME "panid_query_client.tmh" |
| |
| #include <openthread/config.h> |
| |
| #include "panid_query_client.hpp" |
| |
| #include <openthread/platform/random.h> |
| |
| #include "coap/coap_header.hpp" |
| #include "common/code_utils.hpp" |
| #include "common/debug.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_ENABLE_COMMISSIONER && OPENTHREAD_FTD |
| |
| namespace ot { |
| |
| PanIdQueryClient::PanIdQueryClient(ThreadNetif &aThreadNetif) : |
| ThreadNetifLocator(aThreadNetif), |
| mCallback(NULL), |
| mContext(NULL), |
| mPanIdQuery(OT_URI_PATH_PANID_CONFLICT, &PanIdQueryClient::HandleConflict, this) |
| { |
| aThreadNetif.GetCoap().AddResource(mPanIdQuery); |
| } |
| |
| otError PanIdQueryClient::SendQuery(uint16_t aPanId, uint32_t aChannelMask, const Ip6::Address &aAddress, |
| otCommissionerPanIdConflictCallback aCallback, void *aContext) |
| { |
| ThreadNetif &netif = GetNetif(); |
| otError error = OT_ERROR_NONE; |
| Coap::Header header; |
| MeshCoP::CommissionerSessionIdTlv sessionId; |
| MeshCoP::ChannelMask0Tlv channelMask; |
| MeshCoP::PanIdTlv panId; |
| Ip6::MessageInfo messageInfo; |
| Message *message = NULL; |
| |
| VerifyOrExit(netif.GetCommissioner().IsActive(), error = OT_ERROR_INVALID_STATE); |
| |
| header.Init(aAddress.IsMulticast() ? OT_COAP_TYPE_NON_CONFIRMABLE : OT_COAP_TYPE_CONFIRMABLE, |
| OT_COAP_CODE_POST); |
| header.SetToken(Coap::Header::kDefaultTokenLength); |
| header.AppendUriPathOptions(OT_URI_PATH_PANID_QUERY); |
| header.SetPayloadMarker(); |
| |
| VerifyOrExit((message = MeshCoP::NewMeshCoPMessage(netif.GetCoap(), header)) != NULL, |
| error = OT_ERROR_NO_BUFS); |
| |
| sessionId.Init(); |
| sessionId.SetCommissionerSessionId(netif.GetCommissioner().GetSessionId()); |
| SuccessOrExit(error = message->Append(&sessionId, sizeof(sessionId))); |
| |
| channelMask.Init(); |
| channelMask.SetMask(aChannelMask); |
| SuccessOrExit(error = message->Append(&channelMask, sizeof(channelMask))); |
| |
| panId.Init(); |
| panId.SetPanId(aPanId); |
| SuccessOrExit(error = message->Append(&panId, sizeof(panId))); |
| |
| messageInfo.SetSockAddr(netif.GetMle().GetMeshLocal16()); |
| messageInfo.SetPeerAddr(aAddress); |
| messageInfo.SetPeerPort(kCoapUdpPort); |
| messageInfo.SetInterfaceId(netif.GetInterfaceId()); |
| SuccessOrExit(error = netif.GetCoap().SendMessage(*message, messageInfo)); |
| |
| otLogInfoMeshCoP(GetInstance(), "sent panid query"); |
| |
| mCallback = aCallback; |
| mContext = aContext; |
| |
| exit: |
| |
| if (error != OT_ERROR_NONE && message != NULL) |
| { |
| message->Free(); |
| } |
| |
| return error; |
| } |
| |
| void PanIdQueryClient::HandleConflict(void *aContext, otCoapHeader *aHeader, otMessage *aMessage, |
| const otMessageInfo *aMessageInfo) |
| { |
| static_cast<PanIdQueryClient *>(aContext)->HandleConflict( |
| *static_cast<Coap::Header *>(aHeader), *static_cast<Message *>(aMessage), |
| *static_cast<const Ip6::MessageInfo *>(aMessageInfo)); |
| } |
| |
| void PanIdQueryClient::HandleConflict(Coap::Header &aHeader, Message &aMessage, const Ip6::MessageInfo &aMessageInfo) |
| { |
| ThreadNetif &netif = GetNetif(); |
| MeshCoP::PanIdTlv panId; |
| MeshCoP::ChannelMask0Tlv channelMask; |
| Ip6::MessageInfo responseInfo(aMessageInfo); |
| |
| VerifyOrExit(aHeader.GetType() == OT_COAP_TYPE_CONFIRMABLE && |
| aHeader.GetCode() == OT_COAP_CODE_POST); |
| |
| otLogInfoMeshCoP(GetInstance(), "received panid conflict"); |
| |
| SuccessOrExit(MeshCoP::Tlv::GetTlv(aMessage, MeshCoP::Tlv::kPanId, sizeof(panId), panId)); |
| VerifyOrExit(panId.IsValid()); |
| |
| SuccessOrExit(MeshCoP::Tlv::GetTlv(aMessage, MeshCoP::Tlv::kChannelMask, sizeof(channelMask), channelMask)); |
| VerifyOrExit(channelMask.IsValid()); |
| |
| if (mCallback != NULL) |
| { |
| mCallback(panId.GetPanId(), channelMask.GetMask(), mContext); |
| } |
| |
| SuccessOrExit(netif.GetCoap().SendEmptyAck(aHeader, responseInfo)); |
| |
| otLogInfoMeshCoP(GetInstance(), "sent panid query conflict response"); |
| |
| exit: |
| return; |
| } |
| |
| } // namespace ot |
| |
| #endif // OPENTHREAD_ENABLE_COMMISSIONER && OPENTHREAD_FTD |
| |