142 lines
4.5 KiB
Nix
142 lines
4.5 KiB
Nix
let
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common = { pkgs, ... }: {
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security.dhparams.enable = true;
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environment.systemPackages = [ pkgs.openssl ];
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};
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in import ./make-test-python.nix {
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name = "dhparams";
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nodes.generation1 = { pkgs, config, ... }: {
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imports = [ common ];
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security.dhparams.params = {
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# Use low values here because we don't want the test to run for ages.
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foo.bits = 16;
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# Also use the old format to make sure the type is coerced in the right
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# way.
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bar = 17;
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};
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systemd.services.foo = {
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description = "Check systemd Ordering";
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wantedBy = [ "multi-user.target" ];
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unitConfig = {
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# This is to make sure that the dhparams generation of foo occurs
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# before this service so we need this service to start as early as
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# possible to provoke a race condition.
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DefaultDependencies = false;
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# We check later whether the service has been started or not.
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ConditionPathExists = config.security.dhparams.params.foo.path;
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};
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serviceConfig.Type = "oneshot";
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serviceConfig.RemainAfterExit = true;
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# The reason we only provide an ExecStop here is to ensure that we don't
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# accidentally trigger an error because a file system is not yet ready
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# during very early startup (we might not even have the Nix store
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# available, for example if future changes in NixOS use systemd mount
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# units to do early file system initialisation).
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serviceConfig.ExecStop = "${pkgs.coreutils}/bin/true";
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};
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};
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nodes.generation2 = {
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imports = [ common ];
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security.dhparams.params.foo.bits = 18;
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};
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nodes.generation3 = common;
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nodes.generation4 = {
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imports = [ common ];
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security.dhparams.stateful = false;
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security.dhparams.params.foo2.bits = 18;
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security.dhparams.params.bar2.bits = 19;
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};
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nodes.generation5 = {
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imports = [ common ];
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security.dhparams.defaultBitSize = 30;
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security.dhparams.params.foo3 = {};
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security.dhparams.params.bar3 = {};
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};
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testScript = { nodes, ... }: let
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getParamPath = gen: name: let
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node = "generation${toString gen}";
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in nodes.${node}.config.security.dhparams.params.${name}.path;
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switchToGeneration = gen: let
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node = "generation${toString gen}";
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inherit (nodes.${node}.config.system.build) toplevel;
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switchCmd = "${toplevel}/bin/switch-to-configuration test";
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in ''
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with machine.nested("switch to generation ${toString gen}"):
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machine.succeed(
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"${switchCmd}"
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)
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machine = ${node}
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'';
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in ''
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import re
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def assert_param_bits(path, bits):
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with machine.nested(f"check bit size of {path}"):
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output = machine.succeed(f"openssl dhparam -in {path} -text")
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pattern = re.compile(r"^\s*DH Parameters:\s+\((\d+)\s+bit\)\s*$", re.M)
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match = pattern.match(output)
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if match is None:
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raise Exception("bla")
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if match[1] != str(bits):
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raise Exception(f"bit size should be {bits} but it is {match[1]} instead.")
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machine = generation1
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machine.wait_for_unit("multi-user.target")
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with subtest("verify startup order"):
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machine.succeed("systemctl is-active foo.service")
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with subtest("check bit sizes of dhparam files"):
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assert_param_bits("${getParamPath 1 "foo"}", 16)
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assert_param_bits("${getParamPath 1 "bar"}", 17)
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${switchToGeneration 2}
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with subtest("check whether bit size has changed"):
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assert_param_bits("${getParamPath 2 "foo"}", 18)
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with subtest("ensure that dhparams file for 'bar' was deleted"):
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machine.fail("test -e ${getParamPath 1 "bar"}")
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${switchToGeneration 3}
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with subtest("ensure that 'security.dhparams.path' has been deleted"):
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machine.fail("test -e ${nodes.generation3.config.security.dhparams.path}")
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${switchToGeneration 4}
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with subtest("check bit sizes dhparam files"):
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assert_param_bits(
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"${getParamPath 4 "foo2"}", 18
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)
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assert_param_bits(
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"${getParamPath 4 "bar2"}", 19
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)
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with subtest("check whether dhparam files are in the Nix store"):
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machine.succeed(
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"expr match ${getParamPath 4 "foo2"} ${builtins.storeDir}",
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"expr match ${getParamPath 4 "bar2"} ${builtins.storeDir}",
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)
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${switchToGeneration 5}
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with subtest("check whether defaultBitSize works as intended"):
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assert_param_bits("${getParamPath 5 "foo3"}", 30)
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assert_param_bits("${getParamPath 5 "bar3"}", 30)
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'';
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}
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