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|
import ./make-test-python.nix ({ pkgs, ... }: {
name = "tang";
meta = with pkgs.lib.maintainers; {
maintainers = [ jfroche ];
};
nodes.server =
{ config
, pkgs
, modulesPath
, ...
}: {
imports = [
"${modulesPath}/../tests/common/auto-format-root-device.nix"
];
virtualisation = {
emptyDiskImages = [ 512 ];
useBootLoader = true;
useEFIBoot = true;
# This requires to have access
# to a host Nix store as
# the new root device is /dev/vdb
# an empty 512MiB drive, containing no Nix store.
mountHostNixStore = true;
};
boot.loader.systemd-boot.enable = true;
networking.interfaces.eth1.ipv4.addresses = [
{ address = "192.168.0.1"; prefixLength = 24; }
];
environment.systemPackages = with pkgs; [ clevis tang cryptsetup ];
services.tang = {
enable = true;
ipAddressAllow = [ "127.0.0.1/32" ];
};
};
testScript = ''
start_all()
machine.wait_for_unit("sockets.target")
with subtest("Check keys are generated"):
machine.wait_until_succeeds("curl -v http://127.0.0.1:7654/adv")
key = machine.wait_until_succeeds("tang-show-keys 7654")
with subtest("Check systemd access list"):
machine.succeed("ping -c 3 192.168.0.1")
machine.fail("curl -v --connect-timeout 3 http://192.168.0.1:7654/adv")
with subtest("Check basic encrypt and decrypt message"):
machine.wait_until_succeeds(f"""echo 'Hello World' | clevis encrypt tang '{{ "url": "http://127.0.0.1:7654", "thp":"{key}"}}' > /tmp/encrypted""")
decrypted = machine.wait_until_succeeds("clevis decrypt < /tmp/encrypted")
assert decrypted.strip() == "Hello World"
machine.wait_until_succeeds("tang-show-keys 7654")
with subtest("Check encrypt and decrypt disk"):
machine.succeed("cryptsetup luksFormat --force-password --batch-mode /dev/vdb <<<'password'")
machine.succeed(f"""clevis luks bind -s1 -y -f -d /dev/vdb tang '{{ "url": "http://127.0.0.1:7654", "thp":"{key}" }}' <<< 'password' """)
clevis_luks = machine.succeed("clevis luks list -d /dev/vdb")
assert clevis_luks.strip() == """1: tang '{"url":"http://127.0.0.1:7654"}'"""
machine.succeed("clevis luks unlock -d /dev/vdb")
machine.succeed("find /dev/mapper -name 'luks*' -exec cryptsetup close {} +")
machine.succeed("clevis luks unlock -d /dev/vdb")
machine.succeed("find /dev/mapper -name 'luks*' -exec cryptsetup close {} +")
# without tang available, unlock should fail
machine.succeed("systemctl stop tangd.socket")
machine.fail("clevis luks unlock -d /dev/vdb")
machine.succeed("systemctl start tangd.socket")
with subtest("Rotate server keys"):
machine.succeed("${pkgs.tang}/libexec/tangd-rotate-keys -d /var/lib/tang")
machine.succeed("clevis luks unlock -d /dev/vdb")
machine.succeed("find /dev/mapper -name 'luks*' -exec cryptsetup close {} +")
with subtest("Test systemd service security"):
output = machine.succeed("systemd-analyze security tangd@.service")
machine.log(output)
assert output[-9:-1] == "SAFE :-}"
'';
})
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