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1 | /* | |
2 | * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved. | |
3 | * | |
4 | * Licensed under the Apache License 2.0 (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 | |
8 | */ | |
9 | ||
10 | #include <ctype.h> | |
11 | #include <stdio.h> | |
12 | #include <stdlib.h> | |
13 | #include <string.h> | |
14 | ||
15 | #include <openssl/ct.h> | |
16 | #include <openssl/err.h> | |
17 | #include <openssl/pem.h> | |
18 | #include <openssl/x509.h> | |
19 | #include <openssl/x509v3.h> | |
20 | #include "testutil.h" | |
21 | #include <openssl/crypto.h> | |
22 | ||
23 | #ifndef OPENSSL_NO_CT | |
24 | /* Used when declaring buffers to read text files into */ | |
25 | # define CT_TEST_MAX_FILE_SIZE 8096 | |
26 | ||
27 | static char *certs_dir = NULL; | |
28 | static char *ct_dir = NULL; | |
29 | ||
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; | |
39 | char *issuer_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; | |
48 | /* | |
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. | |
52 | */ | |
53 | const char *sct_dir; | |
54 | const char *sct_text_file; | |
55 | /* Whether to test the validity of the SCT(s) */ | |
56 | int test_validity; | |
57 | } CT_TEST_FIXTURE; | |
58 | ||
59 | static CT_TEST_FIXTURE *set_up(const char *const test_case_name) | |
60 | { | |
61 | CT_TEST_FIXTURE *fixture = NULL; | |
62 | ||
63 | if (!TEST_ptr(fixture = OPENSSL_zalloc(sizeof(*fixture)))) | |
64 | goto end; | |
65 | fixture->test_case_name = test_case_name; | |
66 | fixture->epoch_time_in_ms = 1473269626000ULL; /* Sep 7 17:33:46 2016 GMT */ | |
67 | if (!TEST_ptr(fixture->ctlog_store = CTLOG_STORE_new()) | |
68 | || !TEST_int_eq( | |
69 | CTLOG_STORE_load_default_file(fixture->ctlog_store), 1)) | |
70 | goto end; | |
71 | return fixture; | |
72 | ||
73 | end: | |
74 | if (fixture != NULL) | |
75 | CTLOG_STORE_free(fixture->ctlog_store); | |
76 | OPENSSL_free(fixture); | |
77 | TEST_error("Failed to setup"); | |
78 | return NULL; | |
79 | } | |
80 | ||
81 | static void tear_down(CT_TEST_FIXTURE *fixture) | |
82 | { | |
83 | if (fixture != NULL) { | |
84 | CTLOG_STORE_free(fixture->ctlog_store); | |
85 | SCT_LIST_free(fixture->sct_list); | |
86 | } | |
87 | OPENSSL_free(fixture); | |
88 | } | |
89 | ||
90 | static X509 *load_pem_cert(const char *dir, const char *file) | |
91 | { | |
92 | X509 *cert = NULL; | |
93 | char *file_path = test_mk_file_path(dir, file); | |
94 | ||
95 | if (file_path != NULL) { | |
96 | BIO *cert_io = BIO_new_file(file_path, "r"); | |
97 | ||
98 | if (cert_io != NULL) | |
99 | cert = PEM_read_bio_X509(cert_io, NULL, NULL, NULL); | |
100 | BIO_free(cert_io); | |
101 | } | |
102 | ||
103 | OPENSSL_free(file_path); | |
104 | return cert; | |
105 | } | |
106 | ||
107 | static int read_text_file(const char *dir, const char *file, | |
108 | char *buffer, int buffer_length) | |
109 | { | |
110 | int len = -1; | |
111 | char *file_path = test_mk_file_path(dir, file); | |
112 | ||
113 | if (file_path != NULL) { | |
114 | BIO *file_io = BIO_new_file(file_path, "r"); | |
115 | ||
116 | if (file_io != NULL) | |
117 | len = BIO_read(file_io, buffer, buffer_length); | |
118 | BIO_free(file_io); | |
119 | } | |
120 | ||
121 | OPENSSL_free(file_path); | |
122 | return len; | |
123 | } | |
124 | ||
125 | static int compare_sct_list_printout(STACK_OF(SCT) *sct, | |
126 | const char *expected_output) | |
127 | { | |
128 | BIO *text_buffer = NULL; | |
129 | char *actual_output = NULL; | |
130 | int result = 0; | |
131 | ||
132 | if (!TEST_ptr(text_buffer = BIO_new(BIO_s_mem()))) | |
133 | goto end; | |
134 | ||
135 | SCT_LIST_print(sct, text_buffer, 0, "\n", NULL); | |
136 | ||
137 | /* Append \0 because we're about to use the buffer contents as a string. */ | |
138 | if (!TEST_true(BIO_write(text_buffer, "\0", 1))) | |
139 | goto end; | |
140 | ||
141 | BIO_get_mem_data(text_buffer, &actual_output); | |
142 | if (!TEST_str_eq(actual_output, expected_output)) | |
143 | goto end; | |
144 | result = 1; | |
145 | ||
146 | end: | |
147 | BIO_free(text_buffer); | |
148 | return result; | |
149 | } | |
150 | ||
151 | static int compare_extension_printout(X509_EXTENSION *extension, | |
152 | const char *expected_output) | |
153 | { | |
154 | BIO *text_buffer = NULL; | |
155 | char *actual_output = NULL; | |
156 | int result = 0; | |
157 | ||
158 | if (!TEST_ptr(text_buffer = BIO_new(BIO_s_mem())) | |
159 | || !TEST_true(X509V3_EXT_print(text_buffer, extension, | |
160 | X509V3_EXT_DEFAULT, 0))) | |
161 | goto end; | |
162 | ||
163 | /* Append \0 because we're about to use the buffer contents as a string. */ | |
164 | if (!TEST_true(BIO_write(text_buffer, "\0", 1))) | |
165 | goto end; | |
166 | ||
167 | BIO_get_mem_data(text_buffer, &actual_output); | |
168 | if (!TEST_str_eq(actual_output, expected_output)) | |
169 | goto end; | |
170 | ||
171 | result = 1; | |
172 | ||
173 | end: | |
174 | BIO_free(text_buffer); | |
175 | return result; | |
176 | } | |
177 | ||
178 | static int assert_validity(CT_TEST_FIXTURE *fixture, STACK_OF(SCT) *scts, | |
179 | CT_POLICY_EVAL_CTX *policy_ctx) | |
180 | { | |
181 | int invalid_sct_count = 0; | |
182 | int valid_sct_count = 0; | |
183 | int i; | |
184 | ||
185 | if (!TEST_int_ge(SCT_LIST_validate(scts, policy_ctx), 0)) | |
186 | return 0; | |
187 | ||
188 | for (i = 0; i < sk_SCT_num(scts); ++i) { | |
189 | SCT *sct_i = sk_SCT_value(scts, i); | |
190 | ||
191 | switch (SCT_get_validation_status(sct_i)) { | |
192 | case SCT_VALIDATION_STATUS_VALID: | |
193 | ++valid_sct_count; | |
194 | break; | |
195 | case SCT_VALIDATION_STATUS_INVALID: | |
196 | ++invalid_sct_count; | |
197 | break; | |
198 | case SCT_VALIDATION_STATUS_NOT_SET: | |
199 | case SCT_VALIDATION_STATUS_UNKNOWN_LOG: | |
200 | case SCT_VALIDATION_STATUS_UNVERIFIED: | |
201 | case SCT_VALIDATION_STATUS_UNKNOWN_VERSION: | |
202 | /* Ignore other validation statuses. */ | |
203 | break; | |
204 | } | |
205 | } | |
206 | ||
207 | if (!TEST_int_eq(valid_sct_count, fixture->expected_valid_sct_count)) { | |
208 | int unverified_sct_count = sk_SCT_num(scts) - | |
209 | invalid_sct_count - valid_sct_count; | |
210 | ||
211 | TEST_info("%d SCTs failed, %d SCTs unverified", | |
212 | invalid_sct_count, unverified_sct_count); | |
213 | return 0; | |
214 | } | |
215 | ||
216 | return 1; | |
217 | } | |
218 | ||
219 | static int execute_cert_test(CT_TEST_FIXTURE *fixture) | |
220 | { | |
221 | int success = 0; | |
222 | X509 *cert = NULL, *issuer = NULL; | |
223 | STACK_OF(SCT) *scts = NULL; | |
224 | SCT *sct = NULL; | |
225 | char expected_sct_text[CT_TEST_MAX_FILE_SIZE]; | |
226 | int sct_text_len = 0; | |
227 | unsigned char *tls_sct_list = NULL; | |
228 | size_t tls_sct_list_len = 0; | |
229 | CT_POLICY_EVAL_CTX *ct_policy_ctx = CT_POLICY_EVAL_CTX_new(); | |
230 | ||
231 | if (fixture->sct_text_file != NULL) { | |
232 | sct_text_len = read_text_file(fixture->sct_dir, fixture->sct_text_file, | |
233 | expected_sct_text, | |
234 | CT_TEST_MAX_FILE_SIZE - 1); | |
235 | ||
236 | if (!TEST_int_ge(sct_text_len, 0)) | |
237 | goto end; | |
238 | expected_sct_text[sct_text_len] = '\0'; | |
239 | } | |
240 | ||
241 | CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE( | |
242 | ct_policy_ctx, fixture->ctlog_store); | |
243 | ||
244 | CT_POLICY_EVAL_CTX_set_time(ct_policy_ctx, fixture->epoch_time_in_ms); | |
245 | ||
246 | if (fixture->certificate_file != NULL) { | |
247 | int sct_extension_index; | |
248 | int i; | |
249 | X509_EXTENSION *sct_extension = NULL; | |
250 | ||
251 | if (!TEST_ptr(cert = load_pem_cert(fixture->certs_dir, | |
252 | fixture->certificate_file))) | |
253 | goto end; | |
254 | ||
255 | CT_POLICY_EVAL_CTX_set1_cert(ct_policy_ctx, cert); | |
256 | ||
257 | if (fixture->issuer_file != NULL) { | |
258 | if (!TEST_ptr(issuer = load_pem_cert(fixture->certs_dir, | |
259 | fixture->issuer_file))) | |
260 | goto end; | |
261 | CT_POLICY_EVAL_CTX_set1_issuer(ct_policy_ctx, issuer); | |
262 | } | |
263 | ||
264 | sct_extension_index = | |
265 | X509_get_ext_by_NID(cert, NID_ct_precert_scts, -1); | |
266 | sct_extension = X509_get_ext(cert, sct_extension_index); | |
267 | if (fixture->expected_sct_count > 0) { | |
268 | if (!TEST_ptr(sct_extension)) | |
269 | goto end; | |
270 | ||
271 | if (fixture->sct_text_file | |
272 | && !compare_extension_printout(sct_extension, | |
273 | expected_sct_text)) | |
274 | goto end; | |
275 | ||
276 | scts = X509V3_EXT_d2i(sct_extension); | |
277 | for (i = 0; i < sk_SCT_num(scts); ++i) { | |
278 | SCT *sct_i = sk_SCT_value(scts, i); | |
279 | ||
280 | if (!TEST_int_eq(SCT_get_source(sct_i), | |
281 | SCT_SOURCE_X509V3_EXTENSION)) { | |
282 | goto end; | |
283 | } | |
284 | } | |
285 | ||
286 | if (fixture->test_validity) { | |
287 | if (!assert_validity(fixture, scts, ct_policy_ctx)) | |
288 | goto end; | |
289 | } | |
290 | } else if (!TEST_ptr_null(sct_extension)) { | |
291 | goto end; | |
292 | } | |
293 | } | |
294 | ||
295 | if (fixture->tls_sct_list != NULL) { | |
296 | const unsigned char *p = fixture->tls_sct_list; | |
297 | ||
298 | if (!TEST_ptr(o2i_SCT_LIST(&scts, &p, fixture->tls_sct_list_len))) | |
299 | goto end; | |
300 | ||
301 | if (fixture->test_validity && cert != NULL) { | |
302 | if (!assert_validity(fixture, scts, ct_policy_ctx)) | |
303 | goto end; | |
304 | } | |
305 | ||
306 | if (fixture->sct_text_file | |
307 | && !compare_sct_list_printout(scts, expected_sct_text)) { | |
308 | goto end; | |
309 | } | |
310 | ||
311 | tls_sct_list_len = i2o_SCT_LIST(scts, &tls_sct_list); | |
312 | if (!TEST_mem_eq(fixture->tls_sct_list, fixture->tls_sct_list_len, | |
313 | tls_sct_list, tls_sct_list_len)) | |
314 | goto end; | |
315 | } | |
316 | success = 1; | |
317 | ||
318 | end: | |
319 | X509_free(cert); | |
320 | X509_free(issuer); | |
321 | SCT_LIST_free(scts); | |
322 | SCT_free(sct); | |
323 | CT_POLICY_EVAL_CTX_free(ct_policy_ctx); | |
324 | OPENSSL_free(tls_sct_list); | |
325 | return success; | |
326 | } | |
327 | ||
328 | # define SETUP_CT_TEST_FIXTURE() SETUP_TEST_FIXTURE(CT_TEST_FIXTURE, set_up) | |
329 | # define EXECUTE_CT_TEST() EXECUTE_TEST(execute_cert_test, tear_down) | |
330 | ||
331 | static int test_no_scts_in_certificate(void) | |
332 | { | |
333 | SETUP_CT_TEST_FIXTURE(); | |
334 | if (fixture == NULL) | |
335 | return 0; | |
336 | fixture->certs_dir = certs_dir; | |
337 | fixture->certificate_file = "leaf.pem"; | |
338 | fixture->issuer_file = "subinterCA.pem"; | |
339 | fixture->expected_sct_count = 0; | |
340 | EXECUTE_CT_TEST(); | |
341 | return result; | |
342 | } | |
343 | ||
344 | static int test_one_sct_in_certificate(void) | |
345 | { | |
346 | SETUP_CT_TEST_FIXTURE(); | |
347 | if (fixture == NULL) | |
348 | return 0; | |
349 | fixture->certs_dir = certs_dir; | |
350 | fixture->certificate_file = "embeddedSCTs1.pem"; | |
351 | fixture->issuer_file = "embeddedSCTs1_issuer.pem"; | |
352 | fixture->expected_sct_count = 1; | |
353 | fixture->sct_dir = certs_dir; | |
354 | fixture->sct_text_file = "embeddedSCTs1.sct"; | |
355 | EXECUTE_CT_TEST(); | |
356 | return result; | |
357 | } | |
358 | ||
359 | static int test_multiple_scts_in_certificate(void) | |
360 | { | |
361 | SETUP_CT_TEST_FIXTURE(); | |
362 | if (fixture == NULL) | |
363 | return 0; | |
364 | fixture->certs_dir = certs_dir; | |
365 | fixture->certificate_file = "embeddedSCTs3.pem"; | |
366 | fixture->issuer_file = "embeddedSCTs3_issuer.pem"; | |
367 | fixture->expected_sct_count = 3; | |
368 | fixture->sct_dir = certs_dir; | |
369 | fixture->sct_text_file = "embeddedSCTs3.sct"; | |
370 | EXECUTE_CT_TEST(); | |
371 | return result; | |
372 | } | |
373 | ||
374 | static int test_verify_one_sct(void) | |
375 | { | |
376 | SETUP_CT_TEST_FIXTURE(); | |
377 | if (fixture == NULL) | |
378 | return 0; | |
379 | fixture->certs_dir = certs_dir; | |
380 | fixture->certificate_file = "embeddedSCTs1.pem"; | |
381 | fixture->issuer_file = "embeddedSCTs1_issuer.pem"; | |
382 | fixture->expected_sct_count = fixture->expected_valid_sct_count = 1; | |
383 | fixture->test_validity = 1; | |
384 | EXECUTE_CT_TEST(); | |
385 | return result; | |
386 | } | |
387 | ||
388 | static int test_verify_multiple_scts(void) | |
389 | { | |
390 | SETUP_CT_TEST_FIXTURE(); | |
391 | if (fixture == NULL) | |
392 | return 0; | |
393 | fixture->certs_dir = certs_dir; | |
394 | fixture->certificate_file = "embeddedSCTs3.pem"; | |
395 | fixture->issuer_file = "embeddedSCTs3_issuer.pem"; | |
396 | fixture->expected_sct_count = fixture->expected_valid_sct_count = 3; | |
397 | fixture->test_validity = 1; | |
398 | EXECUTE_CT_TEST(); | |
399 | return result; | |
400 | } | |
401 | ||
402 | static int test_verify_fails_for_future_sct(void) | |
403 | { | |
404 | SETUP_CT_TEST_FIXTURE(); | |
405 | if (fixture == NULL) | |
406 | return 0; | |
407 | fixture->epoch_time_in_ms = 1365094800000ULL; /* 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; | |
414 | EXECUTE_CT_TEST(); | |
415 | return result; | |
416 | } | |
417 | ||
418 | static int test_decode_tls_sct(void) | |
419 | { | |
420 | const unsigned char tls_sct_list[] = "\x00\x78" /* length of list */ | |
421 | "\x00\x76" | |
422 | "\x00" /* version */ | |
423 | /* log ID */ | |
424 | "\xDF\x1C\x2E\xC1\x15\x00\x94\x52\x47\xA9\x61\x68\x32\x5D\xDC\x5C\x79" | |
425 | "\x59\xE8\xF7\xC6\xD3\x88\xFC\x00\x2E\x0B\xBD\x3F\x74\xD7\x64" | |
426 | "\x00\x00\x01\x3D\xDB\x27\xDF\x93" /* timestamp */ | |
427 | "\x00\x00" /* extensions length */ | |
428 | "" /* extensions */ | |
429 | "\x04\x03" /* hash and signature algorithms */ | |
430 | "\x00\x47" /* signature length */ | |
431 | /* signature */ | |
432 | "\x30\x45\x02\x20\x48\x2F\x67\x51\xAF\x35\xDB\xA6\x54\x36\xBE\x1F\xD6" | |
433 | "\x64\x0F\x3D\xBF\x9A\x41\x42\x94\x95\x92\x45\x30\x28\x8F\xA3\xE5\xE2" | |
434 | "\x3E\x06\x02\x21\x00\xE4\xED\xC0\xDB\x3A\xC5\x72\xB1\xE2\xF5\xE8\xAB" | |
435 | "\x6A\x68\x06\x53\x98\x7D\xCF\x41\x02\x7D\xFE\xFF\xA1\x05\x51\x9D\x89" | |
436 | "\xED\xBF\x08"; | |
437 | ||
438 | SETUP_CT_TEST_FIXTURE(); | |
439 | if (fixture == NULL) | |
440 | return 0; | |
441 | fixture->tls_sct_list = tls_sct_list; | |
442 | fixture->tls_sct_list_len = 0x7a; | |
443 | fixture->sct_dir = ct_dir; | |
444 | fixture->sct_text_file = "tls1.sct"; | |
445 | EXECUTE_CT_TEST(); | |
446 | return result; | |
447 | } | |
448 | ||
449 | static int test_encode_tls_sct(void) | |
450 | { | |
451 | const char log_id[] = "3xwuwRUAlFJHqWFoMl3cXHlZ6PfG04j8AC4LvT9012Q="; | |
452 | const uint64_t timestamp = 1; | |
453 | const char extensions[] = ""; | |
454 | const char signature[] = "BAMARzBAMiBIL2dRrzXbplQ2vh/WZA89v5pBQpSVkkUwKI+j5" | |
455 | "eI+BgIhAOTtwNs6xXKx4vXoq2poBlOYfc9BAn3+/6EFUZ2J7b8I"; | |
456 | SCT *sct = NULL; | |
457 | ||
458 | SETUP_CT_TEST_FIXTURE(); | |
459 | if (fixture == NULL) | |
460 | return 0; | |
461 | ||
462 | fixture->sct_list = sk_SCT_new_null(); | |
463 | if (!TEST_ptr(sct = SCT_new_from_base64(SCT_VERSION_V1, log_id, | |
464 | CT_LOG_ENTRY_TYPE_X509, timestamp, | |
465 | extensions, signature))) | |
466 | ||
467 | return 0; | |
468 | ||
469 | sk_SCT_push(fixture->sct_list, sct); | |
470 | fixture->sct_dir = ct_dir; | |
471 | fixture->sct_text_file = "tls1.sct"; | |
472 | EXECUTE_CT_TEST(); | |
473 | return result; | |
474 | } | |
475 | ||
476 | /* | |
477 | * Tests that the CT_POLICY_EVAL_CTX default time is approximately now. | |
478 | * Allow +-10 minutes, as it may compensate for clock skew. | |
479 | */ | |
480 | static int test_default_ct_policy_eval_ctx_time_is_now(void) | |
481 | { | |
482 | int success = 0; | |
483 | CT_POLICY_EVAL_CTX *ct_policy_ctx = CT_POLICY_EVAL_CTX_new(); | |
484 | const time_t default_time = | |
485 | (time_t)(CT_POLICY_EVAL_CTX_get_time(ct_policy_ctx) / 1000); | |
486 | const time_t time_tolerance = 600; /* 10 minutes */ | |
487 | ||
488 | if (!TEST_time_t_le(abs((int)difftime(time(NULL), default_time)), | |
489 | time_tolerance)) | |
490 | goto end; | |
491 | ||
492 | success = 1; | |
493 | end: | |
494 | CT_POLICY_EVAL_CTX_free(ct_policy_ctx); | |
495 | return success; | |
496 | } | |
497 | ||
498 | static int test_ctlog_from_base64(void) | |
499 | { | |
500 | CTLOG *ctlogp = NULL; | |
501 | const char notb64[] = "\01\02\03\04"; | |
502 | const char pad[] = "===="; | |
503 | const char name[] = "name"; | |
504 | ||
505 | /* We expect these to both fail! */ | |
506 | if (!TEST_true(!CTLOG_new_from_base64(&ctlogp, notb64, name)) | |
507 | || !TEST_true(!CTLOG_new_from_base64(&ctlogp, pad, name))) | |
508 | return 0; | |
509 | return 1; | |
510 | } | |
511 | #endif | |
512 | ||
513 | int setup_tests(void) | |
514 | { | |
515 | #ifndef OPENSSL_NO_CT | |
516 | if ((ct_dir = getenv("CT_DIR")) == NULL) | |
517 | ct_dir = "ct"; | |
518 | if ((certs_dir = getenv("CERTS_DIR")) == NULL) | |
519 | certs_dir = "certs"; | |
520 | ||
521 | ADD_TEST(test_no_scts_in_certificate); | |
522 | ADD_TEST(test_one_sct_in_certificate); | |
523 | ADD_TEST(test_multiple_scts_in_certificate); | |
524 | ADD_TEST(test_verify_one_sct); | |
525 | ADD_TEST(test_verify_multiple_scts); | |
526 | ADD_TEST(test_verify_fails_for_future_sct); | |
527 | ADD_TEST(test_decode_tls_sct); | |
528 | ADD_TEST(test_encode_tls_sct); | |
529 | ADD_TEST(test_default_ct_policy_eval_ctx_time_is_now); | |
530 | ADD_TEST(test_ctlog_from_base64); | |
531 | #else | |
532 | printf("No CT support\n"); | |
533 | #endif | |
534 | return 1; | |
535 | } |