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103 lines
2.4 KiB
Nix
103 lines
2.4 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.security.sudo;
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inherit (pkgs) sudo;
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in
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{
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###### interface
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options = {
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security.sudo.enable = mkOption {
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type = types.bool;
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default = true;
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description =
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''
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Whether to enable the <command>sudo</command> command, which
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allows non-root users to execute commands as root.
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'';
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};
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security.sudo.wheelNeedsPassword = mkOption {
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type = types.bool;
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default = true;
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description =
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''
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Whether users of the <code>wheel</code> group can execute
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commands as super user without entering a password.
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'';
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};
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security.sudo.configFile = mkOption {
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type = types.lines;
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# Note: if syntax errors are detected in this file, the NixOS
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# configuration will fail to build.
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description =
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''
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This string contains the contents of the
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<filename>sudoers</filename> file.
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'';
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};
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security.sudo.extraConfig = mkOption {
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type = types.lines;
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default = "";
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description = ''
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Extra configuration text appended to <filename>sudoers</filename>.
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'';
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};
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};
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###### implementation
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config = mkIf cfg.enable {
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security.sudo.configFile =
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''
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# Don't edit this file. Set the NixOS options ‘security.sudo.configFile’
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# or ‘security.sudo.extraConfig’ instead.
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# Keep SSH_AUTH_SOCK so that pam_ssh_agent_auth.so can do its magic.
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Defaults env_keep+=SSH_AUTH_SOCK
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# "root" is allowed to do anything.
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root ALL=(ALL:ALL) SETENV: ALL
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# Users in the "wheel" group can do anything.
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%wheel ALL=(ALL:ALL) ${if cfg.wheelNeedsPassword then "" else "NOPASSWD: ALL, "}SETENV: ALL
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${cfg.extraConfig}
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'';
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security.wrappers = {
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sudo.source = "${pkgs.sudo.out}/bin/sudo";
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sudoedit.source = "${pkgs.sudo.out}/bin/sudoedit";
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};
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environment.systemPackages = [ sudo ];
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security.pam.services.sudo = { sshAgentAuth = true; };
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environment.etc = singleton
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{ source =
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pkgs.runCommand "sudoers"
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{ src = pkgs.writeText "sudoers-in" cfg.configFile; }
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# Make sure that the sudoers file is syntactically valid.
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# (currently disabled - NIXOS-66)
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"${pkgs.sudo}/sbin/visudo -f $src -c && cp $src $out";
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target = "sudoers";
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mode = "0440";
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};
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};
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}
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