59 lines
1.6 KiB
Nix
59 lines
1.6 KiB
Nix
with import ./lib;
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{ config, ... }: let
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cfg = config.tv.dnsmasq;
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in {
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options.tv.dnsmasq = {
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enable = mkEnableOption "tv.dnsmasq";
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dhcp-range = mkOption {
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type = types.str;
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};
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interface = mkOption {
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type = types.str;
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};
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address = mkOption {
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type = types.str;
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};
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prefixLength = mkOption {
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type = types.addCheck types.int (x: x >= 0 && x <= 32);
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};
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};
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config = mkIf cfg.enable (mkMerge [
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{
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networking.dhcpcd.denyInterfaces = [ cfg.interface ];
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services.dnsmasq.resolveLocalQueries = false;
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networking.interfaces.${cfg.interface} = {
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ipv4.addresses = singleton {
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address = cfg.address;
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prefixLength = cfg.prefixLength;
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};
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};
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services.dnsmasq.enable = true;
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services.dnsmasq.extraConfig = ''
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bind-interfaces
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dhcp-range=${cfg.dhcp-range}
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listen-address=${cfg.address}
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'';
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tv.iptables.extra.filter.INPUT = [
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"-i ${cfg.interface} -p tcp -m tcp --dport bootps -j ACCEPT"
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"-i ${cfg.interface} -p udp -m udp --dport bootps -j ACCEPT"
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"-i ${cfg.interface} -p tcp -m tcp --dport domain -j ACCEPT"
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"-i ${cfg.interface} -p udp -m udp --dport domain -j ACCEPT"
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];
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}
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{
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# enable forwarding
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boot.kernel.sysctl."net.ipv4.ip_forward" = true;
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tv.iptables.extra.filter.FORWARD = [
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"-m state --state RELATED,ESTABLISHED -j ACCEPT"
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"-i ${cfg.interface} -j ACCEPT"
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];
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tv.iptables.extra.nat.POSTROUTING = [
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"-j MASQUERADE"
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];
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}
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]);
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}
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