Merge pull request #35 from nix-community/refactor-nix
Move tests into separate file, add more structure to nix directory, and run nixpkgs-fmt & statix over everything
This commit is contained in:
nikstur
GitHub
commit
287fb0978d
185
flake.nix
185
flake.nix
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@ -30,19 +30,24 @@
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];
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};
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lib = pkgs.lib;
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testPkgs = import nixpkgs-test { system = "x86_64-linux"; };
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inherit (pkgs) lib;
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rust-nightly = pkgs.rust-bin.fromRustupToolchainFile ./rust/lanzaboote/rust-toolchain.toml;
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craneLib = crane.lib.x86_64-linux.overrideToolchain rust-nightly;
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uefi-run = pkgs.callPackage ./nix/uefi-run.nix {
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uefi-run = pkgs.callPackage ./nix/packages/uefi-run.nix {
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inherit craneLib;
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};
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# Build attributes for a Rust application.
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buildRustApp = {
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src, target ? null, doCheck ? true
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}: let
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buildRustApp =
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{ src
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, target ? null
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, doCheck ? true
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}:
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let
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cleanedSrc = craneLib.cleanCargoSource src;
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commonArgs = {
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src = cleanedSrc;
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@ -51,7 +56,8 @@
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};
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cargoArtifacts = craneLib.buildDepsOnly commonArgs;
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in {
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in
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{
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package = craneLib.buildPackage (commonArgs // {
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inherit cargoArtifacts;
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});
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@ -76,7 +82,8 @@
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lanzatool-unwrapped = lanzatoolCrane.package;
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lanzatool = pkgs.runCommand "lanzatool" {
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lanzatool = pkgs.runCommand "lanzatool"
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{
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nativeBuildInputs = [ pkgs.makeWrapper ];
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} ''
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mkdir -p $out/bin
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@ -88,13 +95,14 @@
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--set RUST_BACKTRACE full \
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--set LANZABOOTE_STUB ${lanzaboote}/bin/lanzaboote.efi
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'';
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in {
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in
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{
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overlays.default = final: prev: {
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inherit lanzatool;
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};
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nixosModules.lanzaboote = { pkgs, lib, ... }: {
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imports = [ ./nix/lanzaboote.nix ];
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imports = [ ./nix/modules/lanzaboote.nix ];
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boot.lanzaboote.package = lib.mkDefault self.packages.${pkgs.system}.lanzatool;
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};
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@ -115,6 +123,8 @@
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pkgs.efitools
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pkgs.python39Packages.ovmfvartool
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pkgs.qemu
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pkgs.nixpkgs-fmt
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pkgs.statix
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];
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inputsFrom = [
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@ -122,159 +132,12 @@
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];
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};
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checks.x86_64-linux = let
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mkSecureBootTest = { name, machine ? {}, testScript }: nixpkgs-test.legacyPackages.x86_64-linux.nixosTest {
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inherit name testScript;
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nodes.machine = { lib, ... }: {
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imports = [
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self.nixosModules.lanzaboote
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machine
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];
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nixpkgs.overlays = [ self.overlays.default ];
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virtualisation = {
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useBootLoader = true;
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useEFIBoot = true;
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useSecureBoot = true;
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};
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boot.loader.efi = {
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canTouchEfiVariables = true;
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};
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boot.lanzaboote = {
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enable = true;
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enrollKeys = lib.mkDefault true;
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pkiBundle = ./pki;
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};
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};
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};
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# Execute a boot test that is intended to fail.
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#
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mkUnsignedTest = { name, path, appendCrap ? false }: mkSecureBootTest {
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inherit name;
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testScript = ''
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import json
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import os.path
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bootspec = None
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def convert_to_esp(store_file_path):
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store_dir = os.path.basename(os.path.dirname(store_file_path))
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filename = os.path.basename(store_file_path)
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return f'/boot/EFI/nixos/{store_dir}-{filename}.efi'
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machine.start()
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bootspec = json.loads(machine.succeed("cat /run/current-system/boot.json")).get('v1')
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assert bootspec is not None, "Unsupported bootspec version!"
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src_path = ${path.src}
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dst_path = ${path.dst}
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machine.succeed(f"cp -rf {src_path} {dst_path}")
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'' + lib.optionalString appendCrap ''
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machine.succeed(f"echo Foo >> {dst_path}")
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'' +
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''
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machine.succeed("sync")
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machine.crash()
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machine.start()
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machine.wait_for_console_text("Hash mismatch")
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'';
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};
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in
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{
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checks.x86_64-linux = {
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lanzatool-clippy = lanzatoolCrane.clippy;
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lanzaboote-clippy = lanzabooteCrane.clippy;
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# TODO: user mode: OK
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# TODO: how to get in: {deployed, audited} mode ?
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lanzaboote-boot = mkSecureBootTest {
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name = "signed-files-boot-under-secureboot";
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testScript = ''
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machine.start()
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assert "Secure Boot: enabled (user)" in machine.succeed("bootctl status")
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'';
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};
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lanzaboote-boot-under-sd-stage1 = mkSecureBootTest {
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name = "signed-files-boot-under-secureboot-systemd-stage-1";
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machine = { ... }: {
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boot.initrd.systemd.enable = true;
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};
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testScript = ''
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machine.start()
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assert "Secure Boot: enabled (user)" in machine.succeed("bootctl status")
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'';
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};
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# So, this is the responsibility of the lanzatool install
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# to run the append-initrd-secret script
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# This test assert that lanzatool still do the right thing
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# preDeviceCommands should not have any root filesystem mounted
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# so it should not be able to find /etc/iamasecret, other than the
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# initrd's one.
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# which should exist IF lanzatool do the right thing.
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lanzaboote-with-initrd-secrets = mkSecureBootTest {
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name = "signed-files-boot-with-secrets-under-secureboot";
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machine = { ... }: {
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boot.initrd.secrets = {
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"/etc/iamasecret" = (pkgs.writeText "iamsecret" "this is a very secure secret");
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};
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boot.initrd.preDeviceCommands = ''
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grep "this is a very secure secret" /etc/iamasecret
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'';
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};
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testScript = ''
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machine.start()
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assert "Secure Boot: enabled (user)" in machine.succeed("bootctl status")
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'';
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};
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# The initrd is not directly signed. Its hash is embedded
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# into lanzaboote. To make integrity verification fail, we
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# actually have to modify the initrd. Appending crap to the
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# end is a harmless way that would make the kernel still
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# accept it.
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is-initrd-secured = mkUnsignedTest {
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name = "unsigned-initrd-do-not-boot-under-secureboot";
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path = {
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src = "bootspec.get('initrd')";
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dst = "convert_to_esp(bootspec.get('initrd'))";
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};
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appendCrap = true;
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};
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is-kernel-secured = mkUnsignedTest {
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name = "unsigned-kernel-do-not-boot-under-secureboot";
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path = {
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src = "bootspec.get('kernel')";
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dst = "convert_to_esp(bootspec.get('kernel'))";
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};
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};
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specialisation-works = mkSecureBootTest {
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name = "specialisation-still-boot-under-secureboot";
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machine = { pkgs, ... }: {
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specialisation.variant.configuration = {
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environment.systemPackages = [
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pkgs.efibootmgr
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];
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};
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};
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testScript = ''
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machine.start()
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print(machine.succeed("ls -lah /boot/EFI/Linux"))
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print(machine.succeed("cat /run/current-system/boot.json"))
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# TODO: make it more reliable to find this filename, i.e. read it from somewhere?
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machine.succeed("bootctl set-default nixos-generation-1-specialisation-variant.efi")
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machine.succeed("sync")
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machine.fail("efibootmgr")
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machine.crash()
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machine.start()
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print(machine.succeed("bootctl"))
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# We have efibootmgr in this specialisation.
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machine.succeed("efibootmgr")
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'';
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};
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};
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} // (import ./nix/tests/lanzaboote.nix {
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inherit pkgs testPkgs;
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lanzabooteModule = self.nixosModules.lanzaboote;
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});
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};
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}
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@ -0,0 +1,156 @@
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{ pkgs
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, testPkgs
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, lanzabooteModule
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}:
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let
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inherit (pkgs) lib;
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mkSecureBootTest = { name, machine ? { }, testScript }: testPkgs.nixosTest {
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inherit name testScript;
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nodes.machine = { lib, ... }: {
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imports = [
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lanzabooteModule
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machine
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];
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virtualisation = {
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useBootLoader = true;
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useEFIBoot = true;
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useSecureBoot = true;
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};
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boot.loader.efi = {
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canTouchEfiVariables = true;
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};
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boot.lanzaboote = {
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enable = true;
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enrollKeys = lib.mkDefault true;
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pkiBundle = ../../pki;
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};
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};
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};
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# Execute a boot test that is intended to fail.
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#
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mkUnsignedTest = { name, path, appendCrap ? false }: mkSecureBootTest {
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inherit name;
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testScript = ''
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import json
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import os.path
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bootspec = None
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def convert_to_esp(store_file_path):
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store_dir = os.path.basename(os.path.dirname(store_file_path))
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filename = os.path.basename(store_file_path)
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return f'/boot/EFI/nixos/{store_dir}-{filename}.efi'
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machine.start()
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bootspec = json.loads(machine.succeed("cat /run/current-system/boot.json")).get('v1')
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assert bootspec is not None, "Unsupported bootspec version!"
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src_path = ${path.src}
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dst_path = ${path.dst}
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machine.succeed(f"cp -rf {src_path} {dst_path}")
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'' + lib.optionalString appendCrap ''
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machine.succeed(f"echo Foo >> {dst_path}")
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'' +
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''
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machine.succeed("sync")
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machine.crash()
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machine.start()
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machine.wait_for_console_text("Hash mismatch")
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'';
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};
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in
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{
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# TODO: user mode: OK
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# TODO: how to get in: {deployed, audited} mode ?
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lanzaboote-boot = mkSecureBootTest {
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name = "signed-files-boot-under-secureboot";
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testScript = ''
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machine.start()
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assert "Secure Boot: enabled (user)" in machine.succeed("bootctl status")
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'';
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};
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lanzaboote-boot-under-sd-stage1 = mkSecureBootTest {
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name = "signed-files-boot-under-secureboot-systemd-stage-1";
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machine = { ... }: {
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boot.initrd.systemd.enable = true;
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};
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testScript = ''
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machine.start()
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assert "Secure Boot: enabled (user)" in machine.succeed("bootctl status")
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'';
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};
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# So, this is the responsibility of the lanzatool install
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# to run the append-initrd-secret script
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# This test assert that lanzatool still do the right thing
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# preDeviceCommands should not have any root filesystem mounted
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# so it should not be able to find /etc/iamasecret, other than the
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# initrd's one.
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# which should exist IF lanzatool do the right thing.
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lanzaboote-with-initrd-secrets = mkSecureBootTest {
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name = "signed-files-boot-with-secrets-under-secureboot";
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machine = { ... }: {
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boot.initrd.secrets = {
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"/etc/iamasecret" = (pkgs.writeText "iamsecret" "this is a very secure secret");
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};
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boot.initrd.preDeviceCommands = ''
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grep "this is a very secure secret" /etc/iamasecret
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'';
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};
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testScript = ''
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machine.start()
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assert "Secure Boot: enabled (user)" in machine.succeed("bootctl status")
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'';
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};
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# The initrd is not directly signed. Its hash is embedded
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# into lanzaboote. To make integrity verification fail, we
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# actually have to modify the initrd. Appending crap to the
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# end is a harmless way that would make the kernel still
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# accept it.
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is-initrd-secured = mkUnsignedTest {
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name = "unsigned-initrd-do-not-boot-under-secureboot";
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path = {
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src = "bootspec.get('initrd')";
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dst = "convert_to_esp(bootspec.get('initrd'))";
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};
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appendCrap = true;
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};
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is-kernel-secured = mkUnsignedTest {
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name = "unsigned-kernel-do-not-boot-under-secureboot";
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path = {
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src = "bootspec.get('kernel')";
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dst = "convert_to_esp(bootspec.get('kernel'))";
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};
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};
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specialisation-works = mkSecureBootTest {
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name = "specialisation-still-boot-under-secureboot";
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machine = { pkgs, ... }: {
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specialisation.variant.configuration = {
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environment.systemPackages = [
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pkgs.efibootmgr
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];
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};
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};
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testScript = ''
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machine.start()
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print(machine.succeed("ls -lah /boot/EFI/Linux"))
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print(machine.succeed("cat /run/current-system/boot.json"))
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# TODO: make it more reliable to find this filename, i.e. read it from somewhere?
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machine.succeed("bootctl set-default nixos-generation-1-specialisation-variant.efi")
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machine.succeed("sync")
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machine.fail("efibootmgr")
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machine.crash()
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machine.start()
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print(machine.succeed("bootctl"))
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# We have efibootmgr in this specialisation.
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machine.succeed("efibootmgr")
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'';
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};
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}
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