// Copyright 2018 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

library fuchsia.bluetooth.host;

struct SecurityProperties {
    bool authenticated;
    bool secure_connections;
    uint8 encryption_key_size;
};

struct Key {
    // The security properties of this link under which this key was exchanged.
    SecurityProperties security_properties;

    // 128 bit key
    array<uint8>:16 value;
};

// Represents a LE Long-Term Key. The |ediv| and |rand| fields are zero if
// distributed using LE Secure Connections pairing.
struct LTK {
    Key key;
    uint8 key_size;
    uint16 ediv;
    uint64 rand;
};

// The preferred LE connection parameters of the peer.
struct LEConnectionParameters {
    uint16 connection_interval;
    uint16 connection_latency;
    uint16 supervision_timeout;
};

enum AddressType : uint8 {
    LE_PUBLIC = 0;
    LE_RANDOM = 1;
    BREDR = 2;
};

struct LEData {
    // The identity address of the peer. If |resolvable| is true, then this is the
    // resolved private address (and the |irk| is present).
    string address;
    AddressType address_type;

    // The peer’s preferred connection parameters, if known.
    LEConnectionParameters? connection_parameters;

    // Known GATT service UUIDs.
    vector<string> services;

    // The LE long-term key. Present if the link was encrypted.
    LTK? ltk;

    // Identity Resolving Key used to generate and resolve random addresses.
    Key? irk;

    // Connection Signature Resolving Key used for data signing without encryption.
    Key? csrk;
};

struct BondingData {
    // The identifier that uniquely identifies this device.
    string identifier;

    // The local Bluetooth identity address that this bond is associated with.
    string local_address;

    // The name of the device, if any.
    string? name;

    // Bonding data that is present when this device is paired on the LE transport.
    LEData? le;

    // Bonding data that is present when this device is paired on the BR/EDR transport.
    // TODO(armansito): Add BR/EDR data.
};