123 lines
2.9 KiB
Nix
123 lines
2.9 KiB
Nix
{pkgs, config, ...}:
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###### interface
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let
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inherit (pkgs.lib) mkOption mkIf;
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options = {
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services = {
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bind = {
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enable = mkOption {
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default = false;
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description = "
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Whether to enable BIND domain name server.
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";
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};
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cacheNetworks = mkOption {
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default = ["127.0.0.0/24"];
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description = "
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What networks are allowed to use us as a resolver.
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";
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};
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blockedNetworks = mkOption {
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default = [];
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description = "
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What networks are just blocked.
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";
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};
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zones = mkOption {
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default = [];
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description = "
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List of zones we claim authority over.
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master=false means slave server; slaves means addresses
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who may request zone transfer.
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";
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example = [{
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name = "example.com";
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master = false;
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file = "/var/dns/example.com";
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masters = ["192.168.0.1"];
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slaves = [];
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}];
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};
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};
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};
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};
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in
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###### implementation
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let
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startingDependency = if config.services.gw6c.enable then "gw6c" else "network-interfaces";
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cfg = config.services.bind;
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concatMapStrings = pkgs.lib.concatMapStrings;
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namedConf =
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(''
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acl cachenetworks { ${concatMapStrings (entry: " ${entry}; ") cfg.cacheNetworks} };
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acl badnetworks { ${concatMapStrings (entry: " ${entry}; ") cfg.blockedNetworks} };
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options {
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listen-on {any;};
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listen-on-v6 {any;};
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allow-query { cachenetworks; };
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blackhole { badnetworks; };
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forward first;
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forwarders { ${concatMapStrings (entry: " ${entry}; ") config.networking.nameservers} };
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directory "/var/run/named";
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pid-file "/var/run/named/named.pid";
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};
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'')
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+
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(concatMapStrings
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(_entry:let entry={master=true;slaves=[];masters=[];}//_entry; in
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''
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zone "${entry.name}" {
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type ${if entry.master then "master" else "slave"};
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file "${entry.file}";
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${ if entry.master then
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''
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allow-transfer {
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${concatMapStrings (ip: ip+";\n") entry.slaves}
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};
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''
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else
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''
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masters {
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${concatMapStrings (ip: ip+";\n") entry.masters}
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};
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''
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}
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allow-query { any; };
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};
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''
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)
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cfg.zones
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)
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;
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confFile = pkgs.writeText "named.conf" namedConf;
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in
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mkIf config.services.bind.enable {
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require = [
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options
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];
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services = {
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extraJobs = [{
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name = "bind";
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job = ''
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description "BIND name server job"
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start script
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${pkgs.coreutils}/bin/mkdir -p /var/run/named
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end script
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respawn ${pkgs.bind}/sbin/named -c ${confFile} -f
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'';
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}];
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};
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}
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