nixos-images/nix/image-installer/hidden-ssh-announcement.nix

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{
config,
lib,
pkgs,
...
}:
{
options.hidden-ssh-announce = {
enable = lib.mkEnableOption "hidden-ssh-announce";
script = lib.mkOption {
type = lib.types.package;
default = pkgs.writers.writeDash "test-output" "echo $1";
description = ''
script to run when the hidden tor service was started and they hostname is known.
takes the hostname as $1
'';
};
};
config = lib.mkIf config.hidden-ssh-announce.enable {
services.openssh.enable = true;
services.tor = {
enable = true;
relay.onionServices.hidden-ssh = {
version = 3;
map = [
{
port = 22;
target.port = 22;
}
];
};
client.enable = true;
};
systemd.services.hidden-ssh-announce = {
description = "announce hidden ssh";
after = [
"tor.service"
"network-online.target"
];
wants = [
"tor.service"
"network-online.target"
];
wantedBy = [ "multi-user.target" ];
serviceConfig = {
# ${pkgs.tor}/bin/torify
ExecStart = pkgs.writeShellScript "announce-hidden-service" ''
set -efu
until test -e ${config.services.tor.settings.DataDirectory}/onion/hidden-ssh/hostname; do
echo "still waiting for ${config.services.tor.settings.DataDirectory}/onion/hidden-ssh/hostname"
sleep 1
done
${config.hidden-ssh-announce.script} "$(cat ${config.services.tor.settings.DataDirectory}/onion/hidden-ssh/hostname)"
'';
PrivateTmp = "true";
User = "tor";
Type = "oneshot";
};
};
};
}