nixpkgs/nixos/modules/services/security/opensnitch.nix
2022-03-02 18:38:56 -05:00

126 lines
3.5 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.opensnitch;
format = pkgs.formats.json {};
in {
options = {
services.opensnitch = {
enable = mkEnableOption "Opensnitch application firewall";
settings = mkOption {
type = types.submodule {
freeformType = format.type;
options = {
Server = {
Address = mkOption {
type = types.str;
description = ''
Unix socket path (unix:///tmp/osui.sock, the "unix:///" part is
mandatory) or TCP socket (192.168.1.100:50051).
'';
};
LogFile = mkOption {
type = types.path;
description = ''
File to write logs to (use /dev/stdout to write logs to standard
output).
'';
};
};
DefaultAction = mkOption {
type = types.enum [ "allow" "deny" ];
description = ''
Default action whether to block or allow application internet
access.
'';
};
DefaultDuration = mkOption {
type = types.enum [
"once" "always" "until restart" "30s" "5m" "15m" "30m" "1h"
];
description = ''
Default duration of firewall rule.
'';
};
InterceptUnknown = mkOption {
type = types.bool;
description = ''
Wheter to intercept spare connections.
'';
};
ProcMonitorMethod = mkOption {
type = types.enum [ "ebpf" "proc" "ftrace" "audit" ];
description = ''
Which process monitoring method to use.
'';
};
LogLevel = mkOption {
type = types.enum [ 0 1 2 3 4 ];
description = ''
Default log level from 0 to 4 (debug, info, important, warning,
error).
'';
};
Firewall = mkOption {
type = types.enum [ "iptables" "nftables" ];
description = ''
Which firewall backend to use.
'';
};
Stats = {
MaxEvents = mkOption {
type = types.int;
description = ''
Max events to send to the GUI.
'';
};
MaxStats = mkOption {
type = types.int;
description = ''
Max stats per item to keep in backlog.
'';
};
};
};
};
description = ''
opensnitchd configuration. Refer to
<link xlink:href="https://github.com/evilsocket/opensnitch/wiki/Configurations"/>
for details on supported values.
'';
};
};
};
config = mkIf cfg.enable {
# pkg.opensnitch is referred to elsewhere in the module so we don't need to worry about it being garbage collected
services.opensnitch.settings = mapAttrs (_: v: mkDefault v) (builtins.fromJSON (builtins.unsafeDiscardStringContext (builtins.readFile "${pkgs.opensnitch}/etc/default-config.json")));
systemd = {
packages = [ pkgs.opensnitch ];
services.opensnitchd.wantedBy = [ "multi-user.target" ];
};
environment.etc."opensnitchd/default-config.json".source = format.generate "default-config.json" cfg.settings;
};
}