blob: 90c0d2e4afd4cb358ba767a5b4a1ab3152d43ab8 [file] [log] [blame]
/*
*
* Copyright (c) 2021 Project CHIP Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <lib/support/Fold.h>
#include <algorithm>
#include <initializer_list>
namespace chip {
namespace Dnssd {
/*
* Matter DNS host settings
*/
// Matter spec expects hostname to be MAC or 802.15.4 Extended Address in hex.
// But in latest android nsdManager, it would set hostname with 40 bytes with prefix as android_,
// and there is no existing API to update the hostname, therefore we put temporary workaround with 40 bytes.
// Follow-up with ticket issue https://github.com/project-chip/connectedhomeip/issues/33474
inline constexpr size_t kHostNameMaxLength = 40;
//
/*
* Matter DNS service subtypes
*/
inline constexpr size_t kSubTypeShortDiscriminatorMaxLength = 4; // _S<dd>
inline constexpr size_t kSubTypeLongDiscriminatorMaxLength = 6; // _L<dddd>
inline constexpr size_t kSubTypeVendorIdMaxLength = 7; // _V<ddddd>
inline constexpr size_t kSubTypeDeviceTypeMaxLength = 12; // _T<dddddddddd>
inline constexpr size_t kSubTypeCommissioningModeMaxLength = 3; // _CM
inline constexpr size_t kSubTypeCompressedFabricIdMaxLength = 18; // _I<16-hex-digits>
/*
* Matter operational node service settings
*/
namespace Operational {
#define SUBTYPES (std::initializer_list<size_t>{ kSubTypeCompressedFabricIdMaxLength })
inline constexpr size_t kInstanceNameMaxLength = 33; // <NodeId>-<FabricId> in hex (16 + 1 + 16)
inline constexpr size_t kSubTypeMaxNumber = SUBTYPES.size();
inline constexpr size_t kSubTypeMaxLength = std::max(SUBTYPES);
inline constexpr size_t kSubTypeTotalLength = chip::Sum(SUBTYPES);
#undef SUBTYPES
} // namespace Operational
/*
* Matter commissionable/commissioner node service constants.
*/
namespace Commission {
#define SUBTYPES \
(std::initializer_list<size_t>{ kSubTypeShortDiscriminatorMaxLength, kSubTypeLongDiscriminatorMaxLength, \
kSubTypeVendorIdMaxLength, kSubTypeDeviceTypeMaxLength, kSubTypeCommissioningModeMaxLength })
inline constexpr size_t kInstanceNameMaxLength = 16; // 64-bit random number in hex
inline constexpr size_t kSubTypeMaxNumber = SUBTYPES.size();
inline constexpr size_t kSubTypeMaxLength = std::max(SUBTYPES);
inline constexpr size_t kSubTypeTotalLength = chip::Sum(SUBTYPES);
#undef SUBTYPES
} // namespace Commission
/*
* Constants for any Matter service.
*/
namespace Common {
inline constexpr size_t kInstanceNameMaxLength = std::max(Operational::kInstanceNameMaxLength, Commission::kInstanceNameMaxLength);
inline constexpr size_t kSubTypeMaxNumber = std::max(Operational::kSubTypeMaxNumber, Commission::kSubTypeMaxNumber);
inline constexpr size_t kSubTypeMaxLength = std::max(Operational::kSubTypeMaxLength, Commission::kSubTypeMaxLength);
inline constexpr size_t kSubTypeTotalLength = std::max(Operational::kSubTypeTotalLength, Commission::kSubTypeTotalLength);
} // namespace Common
} // namespace Dnssd
} // namespace chip