135 lines
4.1 KiB
Nix
135 lines
4.1 KiB
Nix
{ config, lib, pkgs, ... }:
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let
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inherit (lib) mkOption types mkIf concatMapStrings concatStrings mapAttrsToList attrsets;
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cfg = config.pepe.core.dns;
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in
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{
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options.pepe.core.dns = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = "Whether to enable the DNS server.";
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};
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nextDNSId = mkOption {
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type = types.str;
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default = "d65174";
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description = "NextDNS ID for DNS over TLS.";
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};
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extraDomains = mkOption {
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type = types.attrsOf (types.submodule {
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options = {
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dnsInterfaces = mkOption {
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type = types.listOf types.str;
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default = [ ];
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description = "List of interfaces to add DNS entries for this domain.";
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};
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};
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});
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default = { };
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description = "Additional domains to add to DNS configuration.";
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};
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};
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config = mkIf cfg.enable {
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services.coredns = {
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enable = true;
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config =
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let
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# Function to generate domain-specific configurations
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generateDomainConfig = domain: conf: ifaceName:
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let
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iface = config.pepe.core.network.interfaces.${ifaceName};
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ifaceEndpoint = lib.head (lib.attrNames (lib.filterAttrs (_: device: device.isEndpoint) iface.devices));
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serverIP = iface.devices.${ifaceEndpoint}.address;
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interfaceNet = iface.net;
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in
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''
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${domain} {
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view ${ifaceName} {
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expr incidr(client_ip(), '${interfaceNet}')
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}
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template IN A ${domain} {
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answer "${domain}. 60 IN A ${serverIP}"
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}
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template IN HTTPS ${domain} {
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answer "${domain}. 60 IN HTTPS 1 . ipv4hint=\"${serverIP}\""
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}
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cache
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log
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}
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'';
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# Function to generate device views for an interface
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generateDeviceViews = ifaceName:
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let
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iface = config.pepe.core.network.interfaces.${ifaceName};
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in
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concatMapStrings
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({ name, device }:
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let
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deviceIP = device.address;
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serverName = "${name}-${cfg.nextDNSId}.dns.nextdns.io";
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in
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''
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. {
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view ${name} {
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expr client_ip() == '${deviceIP}'
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}
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forward . tls://45.90.28.77 tls://45.90.30.77 {
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tls_servername ${serverName}
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health_check 5s
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}
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}
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''
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)
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(attrsets.mapAttrsToList
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(name: device: { inherit name device; })
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iface.devices
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);
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# Collect all interfaces used across all domains
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allInterfaces = lib.unique (lib.flatten
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(lib.mapAttrsToList
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(_: conf: conf.dnsInterfaces)
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(config.pepe.core.vhost.hosts // cfg.extraDomains)
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));
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# Generate all device views once
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allDeviceViews = concatMapStrings generateDeviceViews allInterfaces;
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# Function to generate configurations for all domains
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generateCoreDNSConfig = domains:
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let
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generateForDomain = domain: conf:
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concatMapStrings
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(ifaceName: generateDomainConfig domain conf ifaceName)
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conf.dnsInterfaces;
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in
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concatStrings (mapAttrsToList generateForDomain domains);
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allDomains = config.pepe.core.vhost.hosts // cfg.extraDomains;
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in
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''
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${generateCoreDNSConfig allDomains}
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${allDeviceViews}
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. {
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forward . tls://45.90.28.77 tls://45.90.30.77 {
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tls_servername "lan-${cfg.nextDNSId}.dns.nextdns.io"
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health_check 5s
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}
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}
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'';
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};
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};
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}
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