dotfiles/modules/tor-hidden-service.nix

43 lines
1.6 KiB
Nix

{ config, lib, ... }:
with lib;
let
hiddenServices = config.services.tor.hiddenServices;
in {
options.services.tor = {
hiddenServices = mkOption { default = []; };
};
config = mkIf (hiddenServices != []) {
assertions = map (hiddenService: {
assertion = hasAttr "name" hiddenService && hasAttr "port" hiddenService;
message = "all hidden services should define a name and a port..";
}) hiddenServices;
services.tor.enable = true;
services.tor.extraConfig = concatStringsSep "\n" (map (hiddenService: ''
HiddenServiceDir /var/lib/tor/${hiddenService.name}
HiddenServicePort ${toString (if hasAttr "remote_port" hiddenService then hiddenService.remote_port else hiddenService.port)} 127.0.0.1:${toString hiddenService.port}
'') hiddenServices);
systemd.services."install-tor-hidden-service-keys" = {
wantedBy = ["tor.service"];
serviceConfig.Type = "oneshot";
serviceConfig.User = "tor";
serviceConfig.Group = "keys";
# TODO: update on change?
# TODO: better ways to get the keys on the server
script = concatStringsSep "\n" (map (hiddenService: if (hasAttr "private_key" hiddenService && hasAttr "hostname" hiddenService) then ''
if ! [[ -e /var/lib/tor/${hiddenService.name}/private_key ]]; then
mkdir -p /var/lib/tor/${hiddenService.name}/
cp ${hiddenService.private_key} /var/lib/tor/${hiddenService.name}/private_key
echo ${hiddenService.hostname} > /var/lib/tor/${hiddenService.name}/hostname
chmod -R 700 /var/lib/tor/${hiddenService.name};
fi
'' else "true") hiddenServices);
};
};
}