stockholm/krebs/3modules/hidden-ssh.nix

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{ config, lib, pkgs, ... }:
with import <stockholm/lib>;
let
cfg = config.krebs.hidden-ssh;
out = {
options.krebs.hidden-ssh = api;
config = lib.mkIf cfg.enable imp;
};
api = {
enable = mkEnableOption "hidden SSH announce";
channel = mkOption {
type = types.str;
default = "#krebs-announce";
};
server = mkOption {
type = types.str;
default = "irc.freenode.org";
};
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message = mkOption {
type = types.str;
default = "SSH Hidden Service at ";
};
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};
imp = let
torDirectory = "/var/lib/tor"; # from tor.nix
hiddenServiceDir = torDirectory + "/ssh-announce-service";
in {
services.tor = {
enable = true;
extraConfig = ''
HiddenServiceDir ${hiddenServiceDir}
HiddenServicePort 22 127.0.0.1:22
'';
client.enable = true;
};
systemd.services.hidden-ssh-announce = {
description = "irc announce hidden ssh";
after = [ "tor.service" "network-online.target" ];
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wants = [ "tor.service" ];
wantedBy = [ "multi-user.target" ];
serviceConfig = {
# ${pkgs.tor}/bin/torify
ExecStart = pkgs.writeDash "irc-announce-ssh" ''
set -efu
until test -e ${hiddenServiceDir}/hostname; do
echo "still waiting for ${hiddenServiceDir}/hostname"
sleep 1
done
${pkgs.untilport}/bin/untilport ${cfg.server} 6667 && \
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${pkgs.irc-announce}/bin/irc-announce \
${cfg.server} 6667 ${config.krebs.build.host.name}-ssh \
\${cfg.channel} \
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"${cfg.message}$(cat ${hiddenServiceDir}/hostname)"
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'';
PrivateTmp = "true";
User = "tor";
Type = "oneshot";
};
};
};
in
out