// Copyright 2019 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.router.config;
using fuchsia.net;

/// DnsSearch is the device DNS search configuration.
struct DnsSearch {
    /// List of DNS servers to consult.
    vector<fuchsia.net.IpAddress> servers;
    /// Domain to add to non fully qualified domain names.
    string? domain_name;
};

/// DnsPolicy is the DNS merge policy to use.
enum DnsPolicy {
    NOT_SET = 0;
    /// Can not be replaced by dynamically learned DNS configuration, will overwrite existing configuration.
    STATIC = 1;
    /// Can be replaced by dynamically learned DNS configuration, will not overwrite existing configuration.
    REPLACEABLE = 2;
    /// Will merge with existing configuration.
    MERGE = 3;
};

///  DnsResolverConfig is the device DNS Resolver configuration.
struct DnsResolverConfig {
    Id element;
    /// DNS search configuration.
    DnsSearch search;
    /// DNS configuration merge policy.
    DnsPolicy policy;
};

/// DNSForwarderConfig is the device DNS Forwarder configuration.
struct DnsForwarderConfig {
    Id element;
    /// Upstream DNS server.
    DnsSearch search;
};

/// DNSForwarder entry is a name - address mapping.
struct DnsForwarderEntry {
    Id element;
    fuchsia.net.Ipv4Address address;
    vector<string> names;
};

/// DNSForwarder the device DNS Forwarder configuration.
struct DnsForwarder {
    /// Forwarder configuration.
    DnsForwarderConfig config;
    /// Local Names.
    vector <DnsForwarderEntry> resolver;
    /// Interfaces where the DNS forwarder is enabled.
    vector<Id> interfaces;
};