mirror of
https://github.com/kidfromjupiter/nearby.git
synced 2026-09-14 22:56:12 -04:00
Alexey Polyudov
6b27a508ed
Signed-off-by: Alexey Polyudov <apolyudov@google.com> Change-Id: I4bf367877a986910bb03e1c54aa972b4bcd59942
86 lines
3.2 KiB
C++
86 lines
3.2 KiB
C++
#ifndef CORE_V2_INTERNAL_BLE_ADVERTISEMENT_H_
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#define CORE_V2_INTERNAL_BLE_ADVERTISEMENT_H_
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#include "core_v2/internal/pcp.h"
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#include "platform_v2/base/byte_array.h"
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namespace location {
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namespace nearby {
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namespace connections {
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// Represents the format of the Connections Ble Advertisement used in
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// Advertising + Discovery.
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//
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// <p>[VERSION][PCP][SERVICE_ID_HASH][ENDPOINT_ID][ENDPOINT_NAME_SIZE]
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// [ENDPOINT_NAME][BLUETOOTH_MAC]
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//
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// <p>See go/connections-ble-advertisement for more information.
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class BleAdvertisement {
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public:
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// Versions of the BleAdvertisement.
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enum class Version {
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kUndefined = 0,
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kV1 = 1,
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// Version is only allocated 3 bits in the BleAdvertisement, so this
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// can never go beyond V7.
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};
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static constexpr int kServiceIdHashLength = 3;
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static constexpr int kVersionAndPcpLength = 1;
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// Should be defined as EndpointManager<Platform>::kEndpointIdLength, but that
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// involves making BleAdvertisement templatized on Platform just for
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// that one little thing, so forget it (at least for now).
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static constexpr int kEndpointIdLength = 4;
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static constexpr int kEndpointNameSizeLength = 1;
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static constexpr int kBluetoothMacAddressLength = 6;
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static constexpr int kMinAdvertisementLength =
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kVersionAndPcpLength + kServiceIdHashLength + kEndpointIdLength +
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kEndpointNameSizeLength + kBluetoothMacAddressLength;
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static constexpr int kMaxEndpointNameLength = 131;
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static constexpr int kVersionBitmask = 0x0E0;
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static constexpr int kPcpBitmask = 0x01F;
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static constexpr int kEndpointNameLengthBitmask = 0x0FF;
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BleAdvertisement() = default;
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BleAdvertisement(Version version, Pcp pcp, const ByteArray& service_id_hash,
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const std::string& endpoint_id,
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const std::string& endpoint_name,
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const std::string& bluetooth_mac_address);
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explicit BleAdvertisement(const ByteArray& ble_advertisement_bytes);
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BleAdvertisement(const BleAdvertisement&) = default;
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BleAdvertisement& operator=(const BleAdvertisement&) = default;
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BleAdvertisement(BleAdvertisement&&) = default;
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BleAdvertisement& operator=(BleAdvertisement&&) = default;
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~BleAdvertisement() = default;
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explicit operator ByteArray() const;
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bool IsValid() const { return !endpoint_id_.empty(); }
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Version GetVersion() const { return version_; }
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Pcp GetPcp() const { return pcp_; }
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ByteArray GetServiceIdHash() const { return service_id_hash_; }
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std::string GetEndpointId() const { return endpoint_id_; }
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std::string GetEndpointName() const { return endpoint_name_; }
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std::string GetBluetoothMacAddress() const { return bluetooth_mac_address_; }
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private:
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ByteArray BluetoothMacAddressHexStringToBytes(
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const std::string& bluetooth_mac_address) const;
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std::string HexBytesToColonDelimitedString(const ByteArray& hex_bytes) const;
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bool IsBluetoothMacAddressUnset(
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const ByteArray& bluetooth_mac_address_bytes) const;
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Version version_ = Version::kUndefined;
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Pcp pcp_ = Pcp::kUnknown;
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ByteArray service_id_hash_;
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std::string endpoint_id_;
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std::string endpoint_name_;
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std::string bluetooth_mac_address_;
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};
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} // namespace connections
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} // namespace nearby
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} // namespace location
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#endif // CORE_V2_INTERNAL_BLE_ADVERTISEMENT_H_
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