| /* |
| * Copyright (c) 2016-21, 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 methods for generating and processing Thread Network Data TLVs. |
| */ |
| |
| #include "network_data_tlvs.hpp" |
| |
| namespace ot { |
| namespace NetworkData { |
| |
| //--------------------------------------------------------------------------------------------------------------------- |
| // NetworkDataTlv |
| |
| const NetworkDataTlv *NetworkDataTlv::Find(const NetworkDataTlv *aStart, const NetworkDataTlv *aEnd, Type aType) |
| { |
| const NetworkDataTlv *tlv; |
| |
| for (tlv = aStart; (tlv + 1 <= aEnd) && (tlv->GetNext() <= aEnd); tlv = tlv->GetNext()) |
| { |
| if (tlv->GetType() == aType) |
| { |
| ExitNow(); |
| } |
| } |
| |
| tlv = nullptr; |
| |
| exit: |
| return tlv; |
| } |
| |
| const NetworkDataTlv *NetworkDataTlv::Find(const NetworkDataTlv *aStart, |
| const NetworkDataTlv *aEnd, |
| Type aType, |
| bool aStable) |
| { |
| const NetworkDataTlv *tlv; |
| |
| for (tlv = aStart; (tlv + 1 <= aEnd) && (tlv->GetNext() <= aEnd); tlv = tlv->GetNext()) |
| { |
| if ((tlv->GetType() == aType) && (tlv->IsStable() == aStable)) |
| { |
| ExitNow(); |
| } |
| } |
| |
| tlv = nullptr; |
| |
| exit: |
| return tlv; |
| } |
| |
| //--------------------------------------------------------------------------------------------------------------------- |
| // PrefixTlv |
| |
| const NetworkDataTlv *PrefixTlv::FindSubTlv(Type aType) const |
| { |
| return Find(GetSubTlvs(), GetNext(), aType); |
| } |
| |
| const NetworkDataTlv *PrefixTlv::FindSubTlv(Type aType, bool aStable) const |
| { |
| return Find(GetSubTlvs(), GetNext(), aType, aStable); |
| } |
| |
| //--------------------------------------------------------------------------------------------------------------------- |
| // ServiceTlv |
| |
| void ServiceTlv::Init(uint8_t aServiceId, uint32_t aEnterpriseNumber, const ServiceData &aServiceData) |
| { |
| NetworkDataTlv::Init(); |
| SetType(kTypeService); |
| |
| mFlagsServiceId = (aEnterpriseNumber == kThreadEnterpriseNumber) ? kThreadEnterpriseFlag : 0; |
| mFlagsServiceId |= (aServiceId & kServiceIdMask); |
| |
| if (aEnterpriseNumber != kThreadEnterpriseNumber) |
| { |
| mShared.mEnterpriseNumber = HostSwap32(aEnterpriseNumber); |
| mServiceDataLength = aServiceData.GetLength(); |
| aServiceData.CopyBytesTo(&mServiceDataLength + sizeof(uint8_t)); |
| } |
| else |
| { |
| mShared.mServiceDataLengthThreadEnterprise = aServiceData.GetLength(); |
| aServiceData.CopyBytesTo(&mShared.mServiceDataLengthThreadEnterprise + sizeof(uint8_t)); |
| } |
| |
| SetLength(GetFieldsLength()); |
| } |
| |
| //--------------------------------------------------------------------------------------------------------------------- |
| // TlvIterator |
| |
| const NetworkDataTlv *TlvIterator::Iterate(NetworkDataTlv::Type aType) |
| { |
| const NetworkDataTlv *tlv = NetworkDataTlv::Find(mStart, mEnd, aType); |
| |
| VerifyOrExit(tlv != nullptr); |
| mStart = tlv->GetNext(); |
| |
| exit: |
| return tlv; |
| } |
| |
| const NetworkDataTlv *TlvIterator::Iterate(NetworkDataTlv::Type aType, bool aStable) |
| { |
| const NetworkDataTlv *tlv = NetworkDataTlv::Find(mStart, mEnd, aType, aStable); |
| |
| VerifyOrExit(tlv != nullptr); |
| mStart = tlv->GetNext(); |
| |
| exit: |
| return tlv; |
| } |
| |
| } // namespace NetworkData |
| } // namespace ot |