From: Kirill Isakov Date: Wed, 25 May 2022 13:09:10 +0000 (+0600) Subject: Add tests for key generation commands X-Git-Url: https://tinc-vpn.org/git/browse?a=commitdiff_plain;h=67e09d80143c4dcad182730a7b73a3d1183e67da;p=tinc Add tests for key generation commands --- diff --git a/test/integration/cmd_keys.py b/test/integration/cmd_keys.py new file mode 100755 index 00000000..d9af1e09 --- /dev/null +++ b/test/integration/cmd_keys.py @@ -0,0 +1,158 @@ +#!/usr/bin/env python3 +# pylint: disable=import-outside-toplevel + +"""Test key management commands.""" + +import os + +from testlib import check, util +from testlib.log import log +from testlib.feature import Feature +from testlib.proc import Tinc +from testlib.test import Test + + +def init(ctx: Test) -> Tinc: + """Initialize a node.""" + + node = ctx.node() + stdin = f""" + init {node} + set Port 0 + set Address localhost + set DeviceType dummy + """ + node.cmd(stdin=stdin) + return node + + +TEST_DATA = b"foo bar baz" + + +def try_rsa_keys(priv_path: str, pub_path: str) -> None: + """Check that RSA key pair works.""" + + try: + import cryptography # type: ignore + from cryptography.hazmat.primitives import hashes, serialization # type: ignore + from cryptography.hazmat.primitives.asymmetric import padding # type: ignore + except ImportError: + log.info("cryptography module missing or broken, skipping key checks") + return + + version = cryptography.__version__.split(".", maxsplit=2) + if not (int(version[0]) >= 3 and int(version[1]) >= 3): + log.info("cryptography module is too old, skipping key check") + return + + log.info("loading keys from (%s, %s)", priv_path, pub_path) + with open(priv_path, "rb") as priv, open(pub_path, "rb") as pub: + key_pair = ( + serialization.load_pem_private_key(priv.read(), password=None), + serialization.load_pem_public_key(pub.read()), + ) + + s_pad = padding.PSS( + mgf=padding.MGF1(hashes.SHA256()), salt_length=padding.PSS.MAX_LENGTH + ) + s_hash = hashes.SHA256() + + log.info("signing sample data %s", TEST_DATA) + signature = key_pair[0].sign(TEST_DATA, s_pad, s_hash) + + log.info("verifying signature %s", signature) + key_pair[1].verify(signature, TEST_DATA, s_pad, s_hash) + + +def test_rsa(foo: Tinc) -> None: + """Test command 'generate-rsa-keys'.""" + + for key_size in "foobar", "512", "16384": + log.info("generate %s-bit RSA key", key_size) + _, err = foo.cmd("generate-rsa-keys", key_size, code=1) + check.is_in("Invalid key size", err) + + log.info("generate RSA key with too many arguments") + _, err = foo.cmd("generate-rsa-keys", "2048", "4096", code=1) + check.is_in("Too many arguments", err) + + rsa_priv = foo.sub("rsa_key.priv") + rsa_pub = foo.sub(f"hosts/{foo}") + + for key_size in "1024", "1025": + log.info("generate %s-bit RSA key", key_size) + _, err = foo.cmd("generate-rsa-keys", key_size) + check.is_in("Generating 1024 bits", err) + check.is_in("generating a weak", err) + check.is_in("found and disabled", err) + try_rsa_keys(rsa_priv, rsa_pub) + + for key_size in "2048", "2049": + log.info("generate %s-bit RSA key", key_size) + os.remove(rsa_priv) + _, err = foo.cmd("generate-rsa-keys", key_size) + check.is_in("Generating 2048 bits", err) + check.file_exists(rsa_priv) + try_rsa_keys(rsa_priv, rsa_pub) + + log.info("check that key is present") + key = util.read_text(rsa_priv) + check.has_prefix(key, "-----BEGIN RSA PRIVATE KEY-----") + + if os.name != "nt": + log.info("remove access to private key") + os.chmod(rsa_priv, 0) + _, err = foo.cmd("generate-rsa-keys", "1024", code=1) + check.is_in("Error opening file", err) + + +def test_rsa_nolegacy(foo: Tinc) -> None: + """Test command 'generate-rsa-keys' on a nolegacy build.""" + + log.info("generate RSA key with nolegacy tinc") + _, err = foo.cmd("generate-rsa-keys", code=1) + check.is_in("Unknown command", err) + + +def test_eddsa(foo: Tinc) -> None: + """Test command 'generate-ed25519-keys'.""" + + log.info("generate EC key with too many arguments") + _, err = foo.cmd("generate-ed25519-keys", "2048", code=1) + check.is_in("Too many arguments", err) + + log.info("generate and replace EC key") + _, err = foo.cmd("generate-ed25519-keys") + check.is_in("found and disabled", err) + + log.info("remove EC key files") + ec_priv = foo.sub("ed25519_key.priv") + ec_pub = foo.sub(f"hosts/{foo}") + os.remove(ec_priv) + os.remove(ec_pub) + + log.info("create new EC key files") + foo.cmd("generate-ed25519-keys") + check.has_prefix(util.read_text(ec_priv), "-----BEGIN ED25519 PRIVATE KEY-----") + check.has_prefix(util.read_text(ec_pub), "Ed25519PublicKey") + + if os.name != "nt": + log.info("remove access to EC private key file") + os.chmod(ec_priv, 0) + _, err = foo.cmd("generate-ed25519-keys", code=1) + check.is_in("Error opening file", err) + + +def run_tests(foo: Tinc) -> None: + """Run tests.""" + + test_eddsa(foo) + + if Feature.LEGACY_PROTOCOL in foo.features: + test_rsa(foo) + else: + test_rsa_nolegacy(foo) + + +with Test("run tests") as context: + run_tests(init(context)) diff --git a/test/integration/meson.build b/test/integration/meson.build index d2859a47..392d86f8 100644 --- a/test/integration/meson.build +++ b/test/integration/meson.build @@ -2,6 +2,7 @@ tests = [ 'basic.py', 'cmd_dump.py', 'cmd_fsck.py', + 'cmd_keys.py', 'cmd_misc.py', 'cmd_net.py', 'cmd_sign_verify.py',