2 * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
16 #include <openssl/ct.h>
17 #include <openssl/err.h>
18 #include <openssl/pem.h>
19 #include <openssl/x509.h>
20 #include <openssl/x509v3.h>
24 /* Used when declaring buffers to read text files into */
25 #define CT_TEST_MAX_FILE_SIZE 8096
27 static char *certs_dir = NULL;
28 static char *ct_dir = NULL;
30 typedef struct ct_test_fixture {
31 const char *test_case_name;
32 /* The current time in milliseconds */
33 uint64_t epoch_time_in_ms;
34 /* The CT log store to use during tests */
35 CTLOG_STORE* ctlog_store;
36 /* Set the following to test handling of SCTs in X509 certificates */
37 const char *certs_dir;
38 char *certificate_file;
40 /* Expected number of SCTs */
41 int expected_sct_count;
42 /* Expected number of valid SCTS */
43 int expected_valid_sct_count;
44 /* Set the following to test handling of SCTs in TLS format */
45 const unsigned char *tls_sct_list;
46 size_t tls_sct_list_len;
47 STACK_OF(SCT) *sct_list;
49 * A file to load the expected SCT text from.
50 * This text will be compared to the actual text output during the test.
51 * A maximum of |CT_TEST_MAX_FILE_SIZE| bytes will be read of this file.
54 const char *sct_text_file;
55 /* Whether to test the validity of the SCT(s) */
59 static CT_TEST_FIXTURE set_up(const char *const test_case_name)
61 CT_TEST_FIXTURE fixture;
64 memset(&fixture, 0, sizeof(fixture));
65 fixture.test_case_name = test_case_name;
66 fixture.epoch_time_in_ms = 1473269626000; /* Sep 7 17:33:46 2016 GMT */
67 if (!TEST_ptr(fixture.ctlog_store = CTLOG_STORE_new())
69 CTLOG_STORE_load_default_file(fixture.ctlog_store), 1))
75 CTLOG_STORE_free(fixture.ctlog_store);
76 TEST_error("Failed to setup");
82 static void tear_down(CT_TEST_FIXTURE fixture)
84 CTLOG_STORE_free(fixture.ctlog_store);
85 SCT_LIST_free(fixture.sct_list);
88 static char *mk_file_path(const char *dir, const char *file)
90 #ifndef OPENSSL_SYS_VMS
91 const char *sep = "/";
95 size_t len = strlen(dir) + strlen(sep) + strlen(file) + 1;
96 char *full_file = OPENSSL_zalloc(len);
98 if (full_file != NULL) {
99 OPENSSL_strlcpy(full_file, dir, len);
100 OPENSSL_strlcat(full_file, sep, len);
101 OPENSSL_strlcat(full_file, file, len);
107 static X509 *load_pem_cert(const char *dir, const char *file)
110 char *file_path = mk_file_path(dir, file);
112 if (file_path != NULL) {
113 BIO *cert_io = BIO_new_file(file_path, "r");
116 cert = PEM_read_bio_X509(cert_io, NULL, NULL, NULL);
120 OPENSSL_free(file_path);
124 static int read_text_file(const char *dir, const char *file,
125 char *buffer, int buffer_length)
128 char *file_path = mk_file_path(dir, file);
130 if (file_path != NULL) {
131 BIO *file_io = BIO_new_file(file_path, "r");
134 len = BIO_read(file_io, buffer, buffer_length);
138 OPENSSL_free(file_path);
142 static int compare_sct_list_printout(STACK_OF(SCT) *sct,
143 const char *expected_output)
145 BIO *text_buffer = NULL;
146 char *actual_output = NULL;
149 if (!TEST_ptr(text_buffer = BIO_new(BIO_s_mem())))
152 SCT_LIST_print(sct, text_buffer, 0, "\n", NULL);
154 /* Append \0 because we're about to use the buffer contents as a string. */
155 if (!TEST_true(BIO_write(text_buffer, "\0", 1)))
158 BIO_get_mem_data(text_buffer, &actual_output);
159 if (!TEST_str_eq(actual_output, expected_output))
164 BIO_free(text_buffer);
168 static int compare_extension_printout(X509_EXTENSION *extension,
169 const char *expected_output)
171 BIO *text_buffer = NULL;
172 char *actual_output = NULL;
175 if (!TEST_ptr(text_buffer = BIO_new(BIO_s_mem()))
176 || !TEST_true(X509V3_EXT_print(text_buffer, extension,
177 X509V3_EXT_DEFAULT, 0)))
180 /* Append \0 because we're about to use the buffer contents as a string. */
181 if (!TEST_true(BIO_write(text_buffer, "\0", 1)))
184 BIO_get_mem_data(text_buffer, &actual_output);
185 if (!TEST_str_eq(actual_output, expected_output))
191 BIO_free(text_buffer);
195 static int assert_validity(CT_TEST_FIXTURE fixture, STACK_OF(SCT) *scts,
196 CT_POLICY_EVAL_CTX *policy_ctx)
198 int invalid_sct_count = 0;
199 int valid_sct_count = 0;
202 if (!TEST_int_ge(SCT_LIST_validate(scts, policy_ctx), 0))
205 for (i = 0; i < sk_SCT_num(scts); ++i) {
206 SCT *sct_i = sk_SCT_value(scts, i);
208 switch (SCT_get_validation_status(sct_i)) {
209 case SCT_VALIDATION_STATUS_VALID:
212 case SCT_VALIDATION_STATUS_INVALID:
215 case SCT_VALIDATION_STATUS_NOT_SET:
216 case SCT_VALIDATION_STATUS_UNKNOWN_LOG:
217 case SCT_VALIDATION_STATUS_UNVERIFIED:
218 case SCT_VALIDATION_STATUS_UNKNOWN_VERSION:
219 /* Ignore other validation statuses. */
224 if (!TEST_int_eq(valid_sct_count, fixture.expected_valid_sct_count)) {
225 int unverified_sct_count = sk_SCT_num(scts) -
226 invalid_sct_count - valid_sct_count;
228 TEST_info("%d SCTs failed, %d SCTs unverified",
229 invalid_sct_count, unverified_sct_count);
236 static int execute_cert_test(CT_TEST_FIXTURE fixture)
239 X509 *cert = NULL, *issuer = NULL;
240 STACK_OF(SCT) *scts = NULL;
242 char expected_sct_text[CT_TEST_MAX_FILE_SIZE];
243 int sct_text_len = 0;
244 unsigned char *tls_sct_list = NULL;
245 size_t tls_sct_list_len = 0;
246 CT_POLICY_EVAL_CTX *ct_policy_ctx = CT_POLICY_EVAL_CTX_new();
248 if (fixture.sct_text_file != NULL) {
249 sct_text_len = read_text_file(fixture.sct_dir, fixture.sct_text_file,
251 CT_TEST_MAX_FILE_SIZE - 1);
253 if (!TEST_int_ge(sct_text_len, 0))
255 expected_sct_text[sct_text_len] = '\0';
258 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(
259 ct_policy_ctx, fixture.ctlog_store);
261 CT_POLICY_EVAL_CTX_set_time(ct_policy_ctx, fixture.epoch_time_in_ms);
263 if (fixture.certificate_file != NULL) {
264 int sct_extension_index;
265 X509_EXTENSION *sct_extension = NULL;
267 if (!TEST_ptr(cert = load_pem_cert(fixture.certs_dir,
268 fixture.certificate_file)))
271 CT_POLICY_EVAL_CTX_set1_cert(ct_policy_ctx, cert);
273 if (fixture.issuer_file != NULL) {
274 if (!TEST_ptr(issuer = load_pem_cert(fixture.certs_dir,
275 fixture.issuer_file)))
277 CT_POLICY_EVAL_CTX_set1_issuer(ct_policy_ctx, issuer);
280 sct_extension_index =
281 X509_get_ext_by_NID(cert, NID_ct_precert_scts, -1);
282 sct_extension = X509_get_ext(cert, sct_extension_index);
283 if (fixture.expected_sct_count > 0) {
284 if (!TEST_ptr(sct_extension))
287 if (fixture.sct_text_file
288 && !compare_extension_printout(sct_extension,
292 if (fixture.test_validity) {
295 scts = X509V3_EXT_d2i(sct_extension);
296 for (i = 0; i < sk_SCT_num(scts); ++i) {
297 SCT *sct_i = sk_SCT_value(scts, i);
299 if (!TEST_true(SCT_set_source(sct_i,
300 SCT_SOURCE_X509V3_EXTENSION)))
304 if (!assert_validity(fixture, scts, ct_policy_ctx))
307 } else if (!TEST_ptr_null(sct_extension)) {
312 if (fixture.tls_sct_list != NULL) {
313 const unsigned char *p = fixture.tls_sct_list;
315 if (!TEST_ptr(o2i_SCT_LIST(&scts, &p, fixture.tls_sct_list_len)))
318 if (fixture.test_validity && cert != NULL) {
319 if (!assert_validity(fixture, scts, ct_policy_ctx))
323 if (fixture.sct_text_file
324 && !compare_sct_list_printout(scts, expected_sct_text)) {
328 tls_sct_list_len = i2o_SCT_LIST(scts, &tls_sct_list);
329 if (!TEST_mem_eq(fixture.tls_sct_list, fixture.tls_sct_list_len,
330 tls_sct_list, tls_sct_list_len))
340 CT_POLICY_EVAL_CTX_free(ct_policy_ctx);
341 OPENSSL_free(tls_sct_list);
345 #define SETUP_CT_TEST_FIXTURE() SETUP_TEST_FIXTURE(CT_TEST_FIXTURE, set_up)
346 #define EXECUTE_CT_TEST() EXECUTE_TEST(execute_cert_test, tear_down)
348 static int test_no_scts_in_certificate()
350 SETUP_CT_TEST_FIXTURE();
351 fixture.certs_dir = certs_dir;
352 fixture.certificate_file = "leaf.pem";
353 fixture.issuer_file = "subinterCA.pem";
354 fixture.expected_sct_count = 0;
358 static int test_one_sct_in_certificate()
360 SETUP_CT_TEST_FIXTURE();
361 fixture.certs_dir = certs_dir;
362 fixture.certificate_file = "embeddedSCTs1.pem";
363 fixture.issuer_file = "embeddedSCTs1_issuer.pem";
364 fixture.expected_sct_count = 1;
365 fixture.sct_dir = certs_dir;
366 fixture.sct_text_file = "embeddedSCTs1.sct";
370 static int test_multiple_scts_in_certificate()
372 SETUP_CT_TEST_FIXTURE();
373 fixture.certs_dir = certs_dir;
374 fixture.certificate_file = "embeddedSCTs3.pem";
375 fixture.issuer_file = "embeddedSCTs3_issuer.pem";
376 fixture.expected_sct_count = 3;
377 fixture.sct_dir = certs_dir;
378 fixture.sct_text_file = "embeddedSCTs3.sct";
382 static int test_verify_one_sct()
384 SETUP_CT_TEST_FIXTURE();
385 fixture.certs_dir = certs_dir;
386 fixture.certificate_file = "embeddedSCTs1.pem";
387 fixture.issuer_file = "embeddedSCTs1_issuer.pem";
388 fixture.expected_sct_count = fixture.expected_valid_sct_count = 1;
389 fixture.test_validity = 1;
393 static int test_verify_multiple_scts()
395 SETUP_CT_TEST_FIXTURE();
396 fixture.certs_dir = certs_dir;
397 fixture.certificate_file = "embeddedSCTs3.pem";
398 fixture.issuer_file = "embeddedSCTs3_issuer.pem";
399 fixture.expected_sct_count = fixture.expected_valid_sct_count = 3;
400 fixture.test_validity = 1;
404 static int test_verify_fails_for_future_sct()
406 SETUP_CT_TEST_FIXTURE();
407 fixture.epoch_time_in_ms = 1365094800000; /* Apr 4 17:00:00 2013 GMT */
408 fixture.certs_dir = certs_dir;
409 fixture.certificate_file = "embeddedSCTs1.pem";
410 fixture.issuer_file = "embeddedSCTs1_issuer.pem";
411 fixture.expected_sct_count = 1;
412 fixture.expected_valid_sct_count = 0;
413 fixture.test_validity = 1;
417 static int test_decode_tls_sct()
419 const unsigned char tls_sct_list[] = "\x00\x78" /* length of list */
423 "\xDF\x1C\x2E\xC1\x15\x00\x94\x52\x47\xA9\x61\x68\x32\x5D\xDC\x5C\x79"
424 "\x59\xE8\xF7\xC6\xD3\x88\xFC\x00\x2E\x0B\xBD\x3F\x74\xD7\x64"
425 "\x00\x00\x01\x3D\xDB\x27\xDF\x93" /* timestamp */
426 "\x00\x00" /* extensions length */
428 "\x04\x03" /* hash and signature algorithms */
429 "\x00\x47" /* signature length */
431 "\x30\x45\x02\x20\x48\x2F\x67\x51\xAF\x35\xDB\xA6\x54\x36\xBE\x1F\xD6"
432 "\x64\x0F\x3D\xBF\x9A\x41\x42\x94\x95\x92\x45\x30\x28\x8F\xA3\xE5\xE2"
433 "\x3E\x06\x02\x21\x00\xE4\xED\xC0\xDB\x3A\xC5\x72\xB1\xE2\xF5\xE8\xAB"
434 "\x6A\x68\x06\x53\x98\x7D\xCF\x41\x02\x7D\xFE\xFF\xA1\x05\x51\x9D\x89"
437 SETUP_CT_TEST_FIXTURE();
438 fixture.tls_sct_list = tls_sct_list;
439 fixture.tls_sct_list_len = 0x7a;
440 fixture.sct_dir = ct_dir;
441 fixture.sct_text_file = "tls1.sct";
445 static int test_encode_tls_sct()
447 const char log_id[] = "3xwuwRUAlFJHqWFoMl3cXHlZ6PfG04j8AC4LvT9012Q=";
448 const uint64_t timestamp = 1;
449 const char extensions[] = "";
450 const char signature[] = "BAMARzBAMiBIL2dRrzXbplQ2vh/WZA89v5pBQpSVkkUwKI+j5"
451 "eI+BgIhAOTtwNs6xXKx4vXoq2poBlOYfc9BAn3+/6EFUZ2J7b8I";
454 SETUP_CT_TEST_FIXTURE();
456 fixture.sct_list = sk_SCT_new_null();
457 if (!TEST_ptr(sct = SCT_new_from_base64(SCT_VERSION_V1, log_id,
458 CT_LOG_ENTRY_TYPE_X509, timestamp,
459 extensions, signature)))
463 sk_SCT_push(fixture.sct_list, sct);
464 fixture.sct_dir = ct_dir;
465 fixture.sct_text_file = "tls1.sct";
470 * Tests that the CT_POLICY_EVAL_CTX default time is approximately now.
471 * Allow +-10 minutes, as it may compensate for clock skew.
473 static int test_default_ct_policy_eval_ctx_time_is_now()
476 CT_POLICY_EVAL_CTX *ct_policy_ctx = CT_POLICY_EVAL_CTX_new();
477 const time_t default_time = CT_POLICY_EVAL_CTX_get_time(ct_policy_ctx) /
479 const time_t time_tolerance = 600; /* 10 minutes */
481 if (!TEST_uint_le(fabs(difftime(time(NULL), default_time)), time_tolerance))
486 CT_POLICY_EVAL_CTX_free(ct_policy_ctx);
490 int test_main(int argc, char *argv[])
492 if ((ct_dir = getenv("CT_DIR")) == NULL)
494 if ((certs_dir = getenv("CERTS_DIR")) == NULL)
497 ADD_TEST(test_no_scts_in_certificate);
498 ADD_TEST(test_one_sct_in_certificate);
499 ADD_TEST(test_multiple_scts_in_certificate);
500 ADD_TEST(test_verify_one_sct);
501 ADD_TEST(test_verify_multiple_scts);
502 ADD_TEST(test_verify_fails_for_future_sct);
503 ADD_TEST(test_decode_tls_sct);
504 ADD_TEST(test_encode_tls_sct);
505 ADD_TEST(test_default_ct_policy_eval_ctx_time_is_now);
507 return run_tests(argv[0]);
510 int test_main(int argc, char *argv[])
512 printf("No CT support\n");