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112 lines
2.9 KiB
Nix
112 lines
2.9 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.security.polkit;
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in
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{
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options = {
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security.polkit.enable = mkOption {
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type = types.bool;
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default = true;
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description = "Whether to enable PolKit.";
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};
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security.polkit.extraConfig = mkOption {
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type = types.lines;
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default = "";
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example =
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''
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/* Log authorization checks. */
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polkit.addRule(function(action, subject) {
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polkit.log("user " + subject.user + " is attempting action " + action.id + " from PID " + subject.pid);
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});
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/* Allow any local user to do anything (dangerous!). */
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polkit.addRule(function(action, subject) {
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if (subject.local) return "yes";
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});
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'';
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description =
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''
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Any polkit rules to be added to config (in JavaScript ;-). See:
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http://www.freedesktop.org/software/polkit/docs/latest/polkit.8.html#polkit-rules
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'';
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};
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security.polkit.adminIdentities = mkOption {
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type = types.listOf types.str;
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default = [ "unix-user:0" "unix-group:wheel" ];
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example = [ "unix-user:alice" "unix-group:admin" ];
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description =
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''
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Specifies which users are considered “administrators”, for those
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actions that require the user to authenticate as an
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administrator (i.e. have an <literal>auth_admin</literal>
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value). By default, this is the <literal>root</literal>
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user and all users in the <literal>wheel</literal> group.
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'';
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};
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};
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config = mkIf cfg.enable {
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environment.systemPackages = [ pkgs.polkit ];
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systemd.packages = [ pkgs.polkit ];
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systemd.services.polkit.restartTriggers = [ config.system.path ];
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systemd.services.polkit.unitConfig.X-StopIfChanged = false;
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# The polkit daemon reads action/rule files
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environment.pathsToLink = [ "/share/polkit-1" ];
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# PolKit rules for NixOS.
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environment.etc."polkit-1/rules.d/10-nixos.rules".text =
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''
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polkit.addAdminRule(function(action, subject) {
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return [${concatStringsSep ", " (map (i: "\"${i}\"") cfg.adminIdentities)}];
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});
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${cfg.extraConfig}
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''; #TODO: validation on compilation (at least against typos)
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services.dbus.packages = [ pkgs.polkit ];
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security.pam.services.polkit-1 = {};
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security.setuidPrograms = [ "pkexec" ];
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security.setuidOwners = [
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{ program = "polkit-agent-helper-1";
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owner = "root";
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group = "root";
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setuid = true;
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source = "${pkgs.polkit}/lib/polkit-1/polkit-agent-helper-1";
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}
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];
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system.activationScripts.polkit =
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''
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# Probably no more needed, clean up
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rm -rf /var/lib/{polkit-1,PolicyKit}
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'';
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users.extraUsers.polkituser = {
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description = "PolKit daemon";
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uid = config.ids.uids.polkituser;
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};
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};
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}
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