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https://github.com/kidfromjupiter/nearby.git
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76 lines
2.8 KiB
C++
76 lines
2.8 KiB
C++
// Copyright 2025 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef THIRD_PARTY_NEARBY_CONNECTIONS_IMPLEMENTATION_MEDIUMS_ADVERTISEMENTS_DCT_ADVERTISEMENT_H_
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#define THIRD_PARTY_NEARBY_CONNECTIONS_IMPLEMENTATION_MEDIUMS_ADVERTISEMENTS_DCT_ADVERTISEMENT_H_
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#include <cstdint>
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#include <optional>
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#include <string>
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namespace nearby::connections::advertisements::ble {
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class DctAdvertisement {
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public:
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static constexpr int kVersion = 1;
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~DctAdvertisement() = default;
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static std::optional<DctAdvertisement> Create(const std::string& service_id,
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const std::string& device_name,
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uint16_t psm, uint8_t dedup);
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static std::optional<DctAdvertisement> Parse(
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const std::string& advertisement);
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static std::optional<std::string> GenerateEndpointId(
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uint8_t dedup, const std::string& device_name);
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static std::string GenerateDeviceToken(const std::string& device_name);
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static std::string ComputeServiceIdHash(const std::string& service_id);
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std::string ToData() const;
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uint8_t GetVersion() const { return version_; }
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uint16_t GetDedup() const { return dedup_; }
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uint16_t GetPsm() const { return psm_; }
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std::string GetServiceIdHash() const { return service_id_hash_; }
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bool IsDeviceNameTruncated() const { return is_device_name_truncated_; }
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std::string GetDeviceName() const { return device_name_; }
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std::optional<std::string> GetEndpointId() const {
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return GenerateEndpointId(dedup_, device_name_);
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}
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std::string GetDeviceToken() const {
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return GenerateDeviceToken(device_name_);
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}
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private:
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DctAdvertisement() = default;
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DctAdvertisement(const std::string& service_id,
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const std::string& device_name, uint16_t psm, uint8_t dedup);
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static bool IsValidUtf8String(const std::string& str);
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static std::string TrunctateDeviceName(const std::string& device_name,
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int max_length);
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uint8_t version_ = kVersion;
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uint8_t dedup_ = 0;
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std::string service_id_hash_;
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uint16_t psm_ = 0;
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bool is_device_name_truncated_ = false;
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std::string device_name_;
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};
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} // namespace nearby::connections::advertisements::ble
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#endif // THIRD_PARTY_NEARBY_CONNECTIONS_IMPLEMENTATION_MEDIUMS_ADVERTISEMENTS_DCT_ADVERTISEMENT_H_
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