1 files changed, 158 insertions, 0 deletions
diff --git a/tests/unit_tests/openvpn/test_crypto.c b/tests/unit_tests/openvpn/test_crypto.c
new file mode 100644
index 0000000..baaaa92
--- /dev/null
+++ b/tests/unit_tests/openvpn/test_crypto.c
@@ -0,0 +1,158 @@
+/*
+ *  OpenVPN -- An application to securely tunnel IP networks
+ *             over a single UDP port, with support for SSL/TLS-based
+ *             session authentication and key exchange,
+ *             packet encryption, packet authentication, and
+ *             packet compression.
+ *
+ *  Copyright (C) 2016-2021 Fox Crypto B.V. <openvpn@foxcrypto.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#elif defined(_MSC_VER)
+#include "config-msvc.h"
+#endif
+
+#include "syshead.h"
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <setjmp.h>
+#include <cmocka.h>
+
+#include "crypto.h"
+
+#include "mock_msg.h"
+
+static const char testtext[] = "Dummy text to test PEM encoding";
+
+static void
+crypto_pem_encode_decode_loopback(void **state)
+{
+    struct gc_arena gc = gc_new();
+    struct buffer src_buf;
+    buf_set_read(&src_buf, (void *)testtext, sizeof(testtext));
+
+    uint8_t dec[sizeof(testtext)];
+    struct buffer dec_buf;
+    buf_set_write(&dec_buf, dec, sizeof(dec));
+
+    struct buffer pem_buf;
+
+    assert_true(crypto_pem_encode("TESTKEYNAME", &pem_buf, &src_buf, &gc));
+    assert_true(BLEN(&src_buf) < BLEN(&pem_buf));
+
+    /* Wrong key name */
+    assert_false(crypto_pem_decode("WRONGNAME", &dec_buf, &pem_buf));
+
+    assert_true(crypto_pem_decode("TESTKEYNAME", &dec_buf, &pem_buf));
+    assert_int_equal(BLEN(&src_buf), BLEN(&dec_buf));
+    assert_memory_equal(BPTR(&src_buf), BPTR(&dec_buf), BLEN(&src_buf));
+
+    gc_free(&gc);
+}
+
+static void
+test_translate_cipher(const char *ciphername, const char *openvpn_name)
+{
+    const cipher_kt_t *cipher = cipher_kt_get(ciphername);
+
+    /* Empty cipher is fine */
+    if (!cipher)
+    {
+        return;
+    }
+
+    const char *kt_name = cipher_kt_name(cipher);
+
+    assert_string_equal(kt_name, openvpn_name);
+}
+
+static void
+test_cipher_names(const char *ciphername, const char *openvpn_name)
+{
+    struct gc_arena gc = gc_new();
+    /* Go through some variants, if the cipher library accepts these, they
+     * should be normalised to the openvpn name */
+    char *upper = string_alloc(ciphername, &gc);
+    char *lower = string_alloc(ciphername, &gc);
+    char *random_case = string_alloc(ciphername, &gc);
+
+    for (int i = 0; i < strlen(ciphername); i++)
+    {
+        upper[i] = toupper(ciphername[i]);
+        lower[i] = tolower(ciphername[i]);
+        if (rand() & 0x1)
+        {
+            random_case[i] = upper[i];
+        }
+        else
+        {
+            random_case[i] = lower[i];
+        }
+    }
+
+    if (!openvpn_name)
+    {
+        openvpn_name = upper;
+    }
+
+    test_translate_cipher(upper, openvpn_name);
+    test_translate_cipher(lower, openvpn_name);
+    test_translate_cipher(random_case, openvpn_name);
+    test_translate_cipher(ciphername, openvpn_name);
+
+
+    gc_free(&gc);
+}
+
+static void
+crypto_translate_cipher_names(void **state)
+{
+    /* Test that a number of ciphers to see that they turn out correctly */
+    test_cipher_names("BF-CBC", NULL);
+    test_cipher_names("BLOWFISH-CBC", "BF-CBC");
+    test_cipher_names("Chacha20-Poly1305", NULL);
+    test_cipher_names("AES-128-GCM", NULL);
+    test_cipher_names("AES-128-CBC", NULL);
+    test_cipher_names("CAMELLIA-128-CFB128", "CAMELLIA-128-CFB");
+    test_cipher_names("id-aes256-GCM", "AES-256-GCM");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        cmocka_unit_test(crypto_pem_encode_decode_loopback),
+        cmocka_unit_test(crypto_translate_cipher_names),
+    };
+
+#if defined(ENABLE_CRYPTO_OPENSSL)
+    OpenSSL_add_all_algorithms();
+#endif
+
+    int ret = cmocka_run_group_tests_name("crypto tests", tests, NULL, NULL);
+
+#if defined(ENABLE_CRYPTO_OPENSSL)
+    EVP_cleanup();
+#endif
+
+    return ret;
+}