131 lines
3.3 KiB
Nix
131 lines
3.3 KiB
Nix
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{ cfg, config, lib, pkgs, ... }:
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let
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inherit (lib) concatStrings singleton;
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tinc = cfg.tincPackage;
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hostsType = builtins.typeOf cfg.hosts;
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hosts =
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if hostsType == "package" then
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# use package as is
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cfg.hosts
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else if hostsType == "path" then
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# use path to generate a package
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pkgs.stdenv.mkDerivation {
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name = "custom-retiolum-hosts";
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src = cfg.hosts;
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installPhase = ''
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mkdir $out
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find . -name .git -prune -o -type f -print0 | xargs -0 cp --target-directory $out
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'';
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}
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else
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abort "The option `services.retiolum.hosts' must be set to a package or a path"
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;
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iproute = cfg.iproutePackage;
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retiolumExtraHosts = import (pkgs.runCommand "retiolum-etc-hosts"
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{ }
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''
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generate() {
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(cd ${hosts}
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printf \'\'
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for i in `ls`; do
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names=$(hostnames $i)
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for j in `sed -En 's|^ *Aliases *= *(.+)|\1|p' $i`; do
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names="$names $(hostnames $j)"
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done
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sed -En '
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s|^ *Subnet *= *([^ /]*)(/[0-9]*)? *$|\1 '"$names"'|p
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' $i
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done | sort
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printf \'\'
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)
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}
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case ${cfg.generateEtcHosts} in
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short)
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hostnames() { echo "$1"; }
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generate
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;;
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long)
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hostnames() { echo "$1.${cfg.network}"; }
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generate
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;;
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both)
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hostnames() { echo "$1.${cfg.network} $1"; }
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generate
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;;
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*)
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echo '""'
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;;
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esac > $out
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'');
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confDir = pkgs.runCommand "retiolum" {
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# TODO text
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executable = true;
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preferLocalBuild = true;
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} ''
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set -euf
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mkdir -p $out
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ln -s ${hosts} $out/hosts
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cat > $out/tinc.conf <<EOF
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Name = ${cfg.name}
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Device = /dev/net/tun
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Interface = ${cfg.network}
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${concatStrings (map (c : "ConnectTo = " + c + "\n") cfg.connectTo)}
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PrivateKeyFile = ${cfg.privateKeyFile}
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EOF
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# source: krebscode/painload/retiolum/scripts/tinc_setup/tinc-up
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cat > $out/tinc-up <<EOF
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host=$out/hosts/${cfg.name}
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${iproute}/sbin/ip link set \$INTERFACE up
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addr4=\$(sed -n 's|^ *Subnet *= *\(10[.][^ ]*\) *$|\1|p' \$host)
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if [ -n "\$addr4" ];then
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${iproute}/sbin/ip -4 addr add \$addr4 dev \$INTERFACE
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${iproute}/sbin/ip -4 route add 10.243.0.0/16 dev \$INTERFACE
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fi
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addr6=\$(sed -n 's|^ *Subnet *= *\(42[:][^ ]*\) *$|\1|p' \$host)
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${iproute}/sbin/ip -6 addr add \$addr6 dev \$INTERFACE
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${iproute}/sbin/ip -6 route add 42::/16 dev \$INTERFACE
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EOF
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chmod +x $out/tinc-up
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'';
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user = cfg.network + "-tinc";
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in
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{
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environment.systemPackages = [ tinc hosts iproute ];
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networking.extraHosts = retiolumExtraHosts;
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systemd.services.retiolum = {
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description = "Tinc daemon for Retiolum";
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after = [ "network.target" ];
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wantedBy = [ "multi-user.target" ];
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path = [ tinc iproute ];
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serviceConfig = {
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# TODO we cannot chroot (-R) b/c we use symlinks to hosts
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# and the private key.
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ExecStart = "${tinc}/sbin/tincd -c ${confDir} -d 0 -U ${user} -D";
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SyslogIdentifier = "retiolum-tincd";
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};
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};
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users.extraUsers = singleton {
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name = user;
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uid = 2961822815; # bin/genid retiolum-tinc
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};
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}
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