test: add test case for importing/exporting PSKs

Test the pre-shared key interchange format import/export function.

Signed-off-by: Daniel Wagner <[email protected]>

Author: dwsuse

test/meson.build

@@ -104,6 +104,15 @@ if conf.get('HAVE_NETDB')
     test('util', test_util)
 endif
 
+psk = executable(
+    'test-psk',
+    ['psk.c'],
+    dependencies: libnvme_dep,
+    include_directories: [incdir, internal_incdir]
+)
+
+test('psk', psk)
+
 subdir('ioctl')
 subdir('nbft')
 

test/psk.c

@@ -0,0 +1,145 @@
+// SPDX-License-Identifier: LGPL-2.1-or-later
+/**
+ * This file is part of libnvme.
+ * Copyright (c) 2024 Daniel Wagner, SUSE Software Solutions
+ */
+
+#include "nvme/linux.h"
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include <ccan/array_size/array_size.h>
+
+#include <libnvme.h>
+
+static int test_rc;
+
+struct test_data {
+	const unsigned char configured_psk[48];
+	size_t psk_length;
+	unsigned char version;
+	unsigned char hmac;
+	const char *exported_psk;
+};
+
+static struct test_data test_data[] = {
+	{ { 0x55, 0x12, 0xDB, 0xB6,
+	    0x73, 0x7D, 0x01, 0x06,
+	    0xF6, 0x59, 0x75, 0xB7,
+	    0x73, 0xDF, 0xB0, 0x11,
+	    0xFF, 0xC3, 0x44, 0xBC,
+	    0xF4, 0x42, 0xE2, 0xDD,
+	    0x6D, 0x8B, 0xC4, 0x87,
+	    0x0B, 0x5D, 0x5B, 0x03},
+	  32, 1, NVME_HMAC_ALG_NONE,
+	  "NVMeTLSkey-1:00:VRLbtnN9AQb2WXW3c9+wEf/DRLz0QuLdbYvEhwtdWwNf9LrZ:" },
+	{ { 0x55, 0x12, 0xDB, 0xB6,
+	    0x73, 0x7D, 0x01, 0x06,
+	    0xF6, 0x59, 0x75, 0xB7,
+	    0x73, 0xDF, 0xB0, 0x11,
+	    0xFF, 0xC3, 0x44, 0xBC,
+	    0xF4, 0x42, 0xE2, 0xDD,
+	    0x6D, 0x8B, 0xC4, 0x87,
+	    0x0B, 0x5D, 0x5B, 0x03},
+	  32, 1, NVME_HMAC_ALG_SHA2_256,
+	  "NVMeTLSkey-1:01:VRLbtnN9AQb2WXW3c9+wEf/DRLz0QuLdbYvEhwtdWwNf9LrZ:" },
+	{ { 0x55, 0x12, 0xDB, 0xB6,
+	    0x73, 0x7D, 0x01, 0x06,
+	    0xF6, 0x59, 0x75, 0xB7,
+	    0x73, 0xDF, 0xB0, 0x11,
+	    0xFF, 0xC3, 0x44, 0xBC,
+	    0xF4, 0x42, 0xE2, 0xDD,
+	    0x6D, 0x8B, 0xC4, 0x87,
+	    0x0B, 0x5D, 0x5B, 0x03,
+	    0xFF, 0xC3, 0x44, 0xBC,
+	    0xF4, 0x42, 0xE2, 0xDD,
+	    0x6D, 0x8B, 0xC4, 0x87,
+	    0x0B, 0x5D, 0x5B, 0x03},
+	  48, 1, NVME_HMAC_ALG_SHA2_384,
+	  "NVMeTLSkey-1:02:VRLbtnN9AQb2WXW3c9+wEf/DRLz0QuLdbYvEhwtdWwP/w0S89ELi3W2LxIcLXVsDn8kXZQ==:" },
+};
+
+static void check_str(const char *exp, const char *res)
+{
+	if (!strcmp(res, exp))
+		return;
+
+	printf("ERROR: got '%s', expected '%s'\n", res, exp);
+
+	test_rc = 1;
+}
+
+static void export_test(struct test_data *test)
+{
+	char *psk;
+
+	if (test->version != 1 ||
+	    !(test->hmac == NVME_HMAC_ALG_SHA2_256 ||
+	      test->hmac == NVME_HMAC_ALG_SHA2_384))
+		return;
+
+	printf("test nvme_export_tls_key hmac %d %s\n",
+	       test->hmac, test->exported_psk);
+
+	psk = nvme_export_tls_key(test->configured_psk, test->psk_length);
+	if (!psk) {
+		test_rc = 1;
+		printf("ERROR: nvme_export_tls_key() failed with %d\n", errno);
+		return;
+	}
+	check_str(test->exported_psk, psk);
+	free(psk);
+}
+
+static void import_test(struct test_data *test)
+{
+	unsigned char *psk;
+	int psk_length;
+	unsigned int hmac;
+
+	if (test->version != 1 ||
+	    !(test->hmac == NVME_HMAC_ALG_SHA2_256 ||
+	      test->hmac == NVME_HMAC_ALG_SHA2_384))
+		return;
+
+	printf("test nvme_import_tls_key hmac %d %s\n",
+	       test->hmac, test->exported_psk);
+
+	psk = nvme_import_tls_key(test->exported_psk, &psk_length, &hmac);
+	if (!psk) {
+		test_rc = 1;
+		printf("ERROR: nvme_import_tls_key() failed with %d\n", errno);
+		return;
+	}
+
+	if (test->hmac != hmac) {
+		test_rc = 1;
+		printf("ERROR: hmac parsing failed\n");
+		goto out;
+	}
+
+	if (test->psk_length != psk_length) {
+		test_rc = 1;
+		printf("ERROR: length parsing failed\n");
+		goto out;
+	}
+	if (memcmp(test->configured_psk, psk, psk_length)) {
+		test_rc = 1;
+		printf("ERROR: parsing psk failed\n");
+	}
+
+out:
+	free(psk);
+}
+
+int main(void)
+{
+	for (int i = 0; i < ARRAY_SIZE(test_data); i++)
+		export_test(&test_data[i]);
+
+	for (int i = 0; i < ARRAY_SIZE(test_data); i++)
+		import_test(&test_data[i]);
+
+	return test_rc ? EXIT_FAILURE : EXIT_SUCCESS;
+}