nixpkgs/nixos/modules/services/networking/supybot.nix
2021-10-04 12:47:20 +02:00

164 lines
5.1 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.supybot;
isStateDirHome = hasPrefix "/home/" cfg.stateDir;
isStateDirVar = cfg.stateDir == "/var/lib/supybot";
pyEnv = pkgs.python3.withPackages (p: [ p.limnoria ] ++ (cfg.extraPackages p));
in
{
options = {
services.supybot = {
enable = mkOption {
type = types.bool;
default = false;
description = "Enable Supybot, an IRC bot (also known as Limnoria).";
};
stateDir = mkOption {
type = types.path;
default = if versionAtLeast config.system.stateVersion "20.09"
then "/var/lib/supybot"
else "/home/supybot";
defaultText = literalExpression "/var/lib/supybot";
description = "The root directory, logs and plugins are stored here";
};
configFile = mkOption {
type = types.path;
description = ''
Path to initial supybot config file. This can be generated by
running supybot-wizard.
Note: all paths should include the full path to the stateDir
directory (backup conf data logs logs/plugins plugins tmp web).
'';
};
plugins = mkOption {
type = types.attrsOf types.path;
default = {};
description = ''
Attribute set of additional plugins that will be symlinked to the
<filename>plugin</filename> subdirectory.
Please note that you still need to add the plugins to the config
file (or with <literal>!load</literal>) using their attribute name.
'';
example = literalExpression ''
let
plugins = pkgs.fetchzip {
url = "https://github.com/ProgVal/Supybot-plugins/archive/57c2450c.zip";
sha256 = "077snf84ibnva3sbpzdfpfma6hcdw7dflwnhg6pw7mgnf0nd84qd";
};
in
{
Wikipedia = "''${plugins}/Wikipedia";
Decide = ./supy-decide;
}
'';
};
extraPackages = mkOption {
type = types.functionTo (types.listOf types.package);
default = p: [];
defaultText = literalExpression "p: []";
description = ''
Extra Python packages available to supybot plugins. The
value must be a function which receives the attrset defined
in <varname>python3Packages</varname> as the sole argument.
'';
example = literalExpression "p: [ p.lxml p.requests ]";
};
};
};
config = mkIf cfg.enable {
environment.systemPackages = [ pkgs.python3Packages.limnoria ];
users.users.supybot = {
uid = config.ids.uids.supybot;
group = "supybot";
description = "Supybot IRC bot user";
home = cfg.stateDir;
isSystemUser = true;
};
users.groups.supybot = {
gid = config.ids.gids.supybot;
};
systemd.services.supybot = {
description = "Supybot, an IRC bot";
documentation = [ "https://limnoria.readthedocs.io/" ];
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
preStart = ''
# This needs to be created afresh every time
rm -f '${cfg.stateDir}/supybot.cfg.bak'
'';
startLimitIntervalSec = 5 * 60; # 5 min
startLimitBurst = 1;
serviceConfig = {
ExecStart = "${pyEnv}/bin/supybot ${cfg.stateDir}/supybot.cfg";
PIDFile = "/run/supybot.pid";
User = "supybot";
Group = "supybot";
UMask = "0007";
Restart = "on-abort";
NoNewPrivileges = true;
PrivateDevices = true;
PrivateMounts = true;
PrivateTmp = true;
ProtectControlGroups = true;
ProtectKernelModules = true;
ProtectKernelTunables = true;
RestrictAddressFamilies = [ "AF_INET" "AF_INET6" ];
RestrictSUIDSGID = true;
SystemCallArchitectures = "native";
RestrictNamespaces = true;
RestrictRealtime = true;
LockPersonality = true;
MemoryDenyWriteExecute = true;
RemoveIPC = true;
ProtectHostname = true;
CapabilityBoundingSet = "";
ProtectSystem = "full";
}
// optionalAttrs isStateDirVar {
StateDirectory = "supybot";
ProtectSystem = "strict";
}
// optionalAttrs (!isStateDirHome) {
ProtectHome = true;
};
};
systemd.tmpfiles.rules = [
"d '${cfg.stateDir}' 0700 supybot supybot - -"
"d '${cfg.stateDir}/backup' 0750 supybot supybot - -"
"d '${cfg.stateDir}/conf' 0750 supybot supybot - -"
"d '${cfg.stateDir}/data' 0750 supybot supybot - -"
"d '${cfg.stateDir}/plugins' 0750 supybot supybot - -"
"d '${cfg.stateDir}/logs' 0750 supybot supybot - -"
"d '${cfg.stateDir}/logs/plugins' 0750 supybot supybot - -"
"d '${cfg.stateDir}/tmp' 0750 supybot supybot - -"
"d '${cfg.stateDir}/web' 0750 supybot supybot - -"
"L '${cfg.stateDir}/supybot.cfg' - - - - ${cfg.configFile}"
]
++ (flip mapAttrsToList cfg.plugins (name: dest:
"L+ '${cfg.stateDir}/plugins/${name}' - - - - ${dest}"
));
};
}