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170b7358 VD |
1 | /* ==================================================================== |
2 | * Copyright (c) 2015 The OpenSSL Project. All rights reserved. | |
3 | * | |
4 | * Redistribution and use in source and binary forms, with or without | |
5 | * modification, are permitted provided that the following conditions | |
6 | * are met: | |
7 | * | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * | |
11 | * 2. Redistributions in binary form must reproduce the above copyright | |
12 | * notice, this list of conditions and the following disclaimer in | |
13 | * the documentation and/or other materials provided with the | |
14 | * distribution. | |
15 | * | |
16 | * 3. All advertising materials mentioning features or use of this | |
17 | * software must display the following acknowledgment: | |
18 | * "This product includes software developed by the OpenSSL Project | |
19 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | |
20 | * | |
21 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
22 | * endorse or promote products derived from this software without | |
23 | * prior written permission. For written permission, please contact | |
24 | * openssl-core@openssl.org. | |
25 | * | |
26 | * 5. Products derived from this software may not be called "OpenSSL" | |
27 | * nor may "OpenSSL" appear in their names without prior written | |
28 | * permission of the OpenSSL Project. | |
29 | * | |
30 | * 6. Redistributions of any form whatsoever must retain the following | |
31 | * acknowledgment: | |
32 | * "This product includes software developed by the OpenSSL Project | |
33 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
34 | * | |
35 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
36 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
37 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
38 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
39 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
40 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
41 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
42 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
43 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
44 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
45 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
46 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
47 | * ==================================================================== | |
48 | */ | |
49 | ||
50 | #include <stdio.h> | |
51 | #include <string.h> | |
52 | #include <ctype.h> | |
53 | #include <limits.h> | |
54 | #include <errno.h> | |
55 | ||
56 | #include <openssl/crypto.h> | |
57 | #include <openssl/evp.h> | |
58 | #include <openssl/x509.h> | |
59 | #include <openssl/ssl.h> | |
60 | #include <openssl/err.h> | |
61 | #include <openssl/conf.h> | |
62 | #ifndef OPENSSL_NO_ENGINE | |
63 | #include <openssl/engine.h> | |
64 | #endif | |
65 | ||
66 | #include "../e_os.h" | |
67 | ||
18295f0c RL |
68 | #define _UC(c) ((unsigned char)(c)) |
69 | ||
170b7358 VD |
70 | static const char *progname; |
71 | ||
72 | /* | |
73 | * Forward declaration, of function that uses internal interfaces, from headers | |
74 | * included at the end of this module. | |
75 | */ | |
76 | static void store_ctx_dane_init(X509_STORE_CTX *, SSL *); | |
77 | ||
78 | static int saved_errno; | |
79 | ||
80 | static void save_errno(void) | |
81 | { | |
82 | saved_errno = errno; | |
83 | } | |
84 | ||
85 | static int restore_errno(void) | |
86 | { | |
87 | int ret = errno; | |
88 | errno = saved_errno; | |
89 | return ret; | |
90 | } | |
91 | ||
71405d68 | 92 | static void test_usage(void) |
170b7358 VD |
93 | { |
94 | fprintf(stderr, "usage: %s: danetest basedomain CAfile tlsafile\n", progname); | |
95 | } | |
96 | ||
97 | static void print_errors(void) | |
98 | { | |
99 | unsigned long err; | |
100 | char buffer[1024]; | |
101 | const char *file; | |
102 | const char *data; | |
103 | int line; | |
104 | int flags; | |
105 | ||
106 | while ((err = ERR_get_error_line_data(&file, &line, &data, &flags)) != 0) { | |
107 | ERR_error_string_n(err, buffer, sizeof(buffer)); | |
108 | if (flags & ERR_TXT_STRING) | |
109 | fprintf(stderr, "Error: %s:%s:%d:%s\n", buffer, file, line, data); | |
110 | else | |
111 | fprintf(stderr, "Error: %s:%s:%d\n", buffer, file, line); | |
112 | } | |
113 | } | |
114 | ||
115 | static int verify_chain(SSL *ssl, STACK_OF(X509) *chain) | |
116 | { | |
117 | int ret; | |
118 | X509_STORE_CTX *store_ctx; | |
119 | SSL_CTX *ssl_ctx = SSL_get_SSL_CTX(ssl); | |
120 | X509_STORE *store = SSL_CTX_get_cert_store(ssl_ctx); | |
121 | int store_ctx_idx = SSL_get_ex_data_X509_STORE_CTX_idx(); | |
122 | X509 *cert = sk_X509_value(chain, 0); | |
123 | ||
124 | if ((store_ctx = X509_STORE_CTX_new()) == NULL) | |
125 | return -1; | |
126 | ||
127 | if (!X509_STORE_CTX_init(store_ctx, store, cert, chain)) | |
dccd20d1 | 128 | return 0; |
170b7358 VD |
129 | X509_STORE_CTX_set_ex_data(store_ctx, store_ctx_idx, ssl); |
130 | ||
131 | X509_STORE_CTX_set_default(store_ctx, | |
132 | SSL_is_server(ssl) ? "ssl_client" : "ssl_server"); | |
133 | X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(store_ctx), | |
134 | SSL_get0_param(ssl)); | |
135 | store_ctx_dane_init(store_ctx, ssl); | |
136 | ||
137 | if (SSL_get_verify_callback(ssl)) | |
dccd20d1 | 138 | X509_STORE_CTX_set_verify_cb(store_ctx, SSL_get_verify_callback(ssl)); |
170b7358 VD |
139 | |
140 | ret = X509_verify_cert(store_ctx); | |
141 | ||
142 | SSL_set_verify_result(ssl, X509_STORE_CTX_get_error(store_ctx)); | |
143 | X509_STORE_CTX_cleanup(store_ctx); | |
144 | X509_STORE_CTX_free(store_ctx); | |
145 | ||
146 | return (ret); | |
147 | } | |
148 | ||
02b91dcf | 149 | static STACK_OF(X509) *load_chain(BIO *fp, int nelem) |
170b7358 VD |
150 | { |
151 | int count; | |
152 | char *name = 0; | |
153 | char *header = 0; | |
154 | unsigned char *data = 0; | |
155 | long len; | |
dccd20d1 | 156 | char *errtype = 0; /* if error: cert or pkey? */ |
170b7358 VD |
157 | STACK_OF(X509) *chain; |
158 | typedef X509 *(*d2i_X509_t)(X509 **, const unsigned char **, long); | |
159 | ||
160 | if ((chain = sk_X509_new_null()) == 0) { | |
dccd20d1 F |
161 | perror("malloc"); |
162 | exit(1); | |
170b7358 VD |
163 | } |
164 | ||
165 | for (count = 0; | |
dccd20d1 | 166 | count < nelem && errtype == 0 |
02b91dcf | 167 | && PEM_read_bio(fp, &name, &header, &data, &len); |
dccd20d1 F |
168 | ++count) { |
169 | const unsigned char *p = data; | |
170 | ||
171 | if (strcmp(name, PEM_STRING_X509) == 0 | |
172 | || strcmp(name, PEM_STRING_X509_TRUSTED) == 0 | |
173 | || strcmp(name, PEM_STRING_X509_OLD) == 0) { | |
174 | d2i_X509_t d = strcmp(name, PEM_STRING_X509_TRUSTED) ? | |
175 | d2i_X509_AUX : d2i_X509; | |
176 | X509 *cert = d(0, &p, len); | |
177 | ||
178 | if (cert == 0 || (p - data) != len) | |
179 | errtype = "certificate"; | |
180 | else if (sk_X509_push(chain, cert) == 0) { | |
181 | perror("malloc"); | |
182 | goto err; | |
183 | } | |
184 | } else { | |
185 | fprintf(stderr, "unexpected chain file object: %s\n", name); | |
186 | goto err; | |
187 | } | |
188 | ||
189 | /* | |
190 | * If any of these were null, PEM_read() would have failed. | |
191 | */ | |
192 | OPENSSL_free(name); | |
193 | OPENSSL_free(header); | |
194 | OPENSSL_free(data); | |
170b7358 VD |
195 | } |
196 | ||
197 | if (errtype) { | |
dccd20d1 | 198 | fprintf(stderr, "error reading: malformed %s\n", errtype); |
170b7358 VD |
199 | goto err; |
200 | } | |
201 | ||
202 | if (count == nelem) { | |
203 | ERR_clear_error(); | |
204 | return chain; | |
205 | } | |
206 | ||
207 | err: | |
208 | /* Some other PEM read error */ | |
209 | sk_X509_pop_free(chain, X509_free); | |
210 | print_errors(); | |
211 | return NULL; | |
212 | } | |
213 | ||
02b91dcf | 214 | static char *read_to_eol(BIO *f) |
170b7358 VD |
215 | { |
216 | static char buf[1024]; | |
217 | int n; | |
218 | ||
02b91dcf | 219 | if (!BIO_gets(f, buf, sizeof(buf))) |
170b7358 VD |
220 | return NULL; |
221 | ||
222 | n = strlen(buf); | |
223 | ||
224 | if (buf[n-1] != '\n') { | |
225 | if (n+1 == sizeof(buf)) { | |
226 | fprintf(stderr, "%s: warning: input too long\n", progname); | |
227 | } else { | |
228 | fprintf(stderr, "%s: warning: EOF before newline\n", progname); | |
229 | } | |
230 | return NULL; | |
231 | } | |
232 | ||
233 | /* Trim trailing whitespace */ | |
18295f0c | 234 | while (n > 0 && isspace(_UC(buf[n-1]))) |
170b7358 VD |
235 | buf[--n] = '\0'; |
236 | ||
237 | return buf; | |
238 | } | |
239 | ||
240 | /* | |
241 | * Hex decoder that tolerates optional whitespace | |
242 | */ | |
243 | static ossl_ssize_t hexdecode(const char *in, void *result) | |
244 | { | |
245 | unsigned char **out = (unsigned char **)result; | |
246 | unsigned char *ret = OPENSSL_malloc(strlen(in)/2); | |
247 | unsigned char *cp = ret; | |
248 | uint8_t byte; | |
249 | int nibble = 0; | |
250 | ||
251 | if (ret == NULL) | |
252 | return -1; | |
253 | ||
254 | for (byte = 0; *in; ++in) { | |
255 | char c; | |
256 | ||
18295f0c | 257 | if (isspace(_UC(*in))) |
170b7358 | 258 | continue; |
18295f0c | 259 | c = tolower(_UC(*in)); |
170b7358 VD |
260 | if ('0' <= c && c <= '9') { |
261 | byte |= c - '0'; | |
262 | } else if ('a' <= c && c <= 'f') { | |
263 | byte |= c - 'a' + 10; | |
264 | } else { | |
265 | OPENSSL_free(ret); | |
266 | return 0; | |
267 | } | |
268 | if ((nibble ^= 1) == 0) { | |
269 | *cp++ = byte; | |
270 | byte = 0; | |
271 | } else { | |
272 | byte <<= 4; | |
273 | } | |
274 | } | |
275 | if (nibble != 0) { | |
276 | OPENSSL_free(ret); | |
277 | return 0; | |
278 | } | |
279 | ||
280 | return cp - (*out = ret); | |
281 | } | |
282 | ||
283 | static ossl_ssize_t checked_uint8(const char *in, void *out) | |
284 | { | |
285 | uint8_t *result = (uint8_t *)out; | |
286 | const char *cp = in; | |
287 | char *endp; | |
288 | long v; | |
289 | int e; | |
290 | ||
291 | save_errno(); | |
292 | v = strtol(cp, &endp, 10); | |
293 | e = restore_errno(); | |
294 | ||
295 | if (((v == LONG_MIN || v == LONG_MAX) && e == ERANGE) || | |
18295f0c | 296 | endp == cp || !isspace(_UC(*endp)) || |
170b7358 VD |
297 | v != (*(uint8_t *)result = (uint8_t) v)) { |
298 | return -1; | |
299 | } | |
18295f0c | 300 | for (cp = endp; isspace(_UC(*cp)); ++cp) |
170b7358 VD |
301 | continue; |
302 | return cp - in; | |
303 | } | |
304 | ||
bbd86bf5 RS |
305 | struct tlsa_field { |
306 | void *var; | |
307 | const char *name; | |
308 | ossl_ssize_t (*parser)(const char *, void *); | |
309 | }; | |
310 | ||
170b7358 VD |
311 | static int tlsa_import_rr(SSL *ssl, const char *rrdata) |
312 | { | |
bbd86bf5 RS |
313 | static uint8_t usage; |
314 | static uint8_t selector; | |
315 | static uint8_t mtype; | |
316 | static unsigned char *data = NULL; | |
317 | static struct tlsa_field tlsa_fields[] = { | |
170b7358 VD |
318 | { &usage, "usage", checked_uint8 }, |
319 | { &selector, "selector", checked_uint8 }, | |
320 | { &mtype, "mtype", checked_uint8 }, | |
321 | { &data, "data", hexdecode }, | |
322 | { NULL, } | |
323 | }; | |
bbd86bf5 | 324 | int ret; |
170b7358 | 325 | struct tlsa_field *f; |
bbd86bf5 RS |
326 | const char *cp = rrdata; |
327 | ossl_ssize_t len = 0; | |
170b7358 VD |
328 | |
329 | for (f = tlsa_fields; f->var; ++f) { | |
330 | if ((len = f->parser(cp += len, f->var)) <= 0) { | |
331 | fprintf(stderr, "%s: warning: bad TLSA %s field in: %s\n", | |
332 | progname, f->name, rrdata); | |
333 | return 0; | |
334 | } | |
335 | } | |
336 | ret = SSL_dane_tlsa_add(ssl, usage, selector, mtype, data, len); | |
337 | OPENSSL_free(data); | |
338 | ||
339 | if (ret == 0) { | |
340 | print_errors(); | |
341 | fprintf(stderr, "%s: warning: unusable TLSA rrdata: %s\n", | |
342 | progname, rrdata); | |
343 | return 0; | |
344 | } | |
345 | if (ret < 0) { | |
346 | fprintf(stderr, "%s: warning: error loading TLSA rrdata: %s\n", | |
347 | progname, rrdata); | |
348 | return 0; | |
349 | } | |
350 | return ret; | |
351 | } | |
352 | ||
353 | static int allws(const char *cp) | |
354 | { | |
355 | while (*cp) | |
18295f0c | 356 | if (!isspace(_UC(*cp++))) |
170b7358 VD |
357 | return 0; |
358 | return 1; | |
359 | } | |
360 | ||
361 | static int test_tlsafile(SSL_CTX *ctx, const char *basename, | |
02b91dcf | 362 | BIO *f, const char *path) |
170b7358 VD |
363 | { |
364 | char *line; | |
365 | int testno = 0; | |
366 | int ret = 1; | |
367 | SSL *ssl; | |
368 | ||
369 | while (ret > 0 && (line = read_to_eol(f)) != NULL) { | |
370 | STACK_OF(X509) *chain; | |
371 | int ntlsa; | |
372 | int ncert; | |
373 | int want; | |
374 | int want_depth; | |
375 | int off; | |
376 | int i; | |
377 | int ok; | |
378 | int err; | |
379 | int mdpth; | |
380 | ||
381 | if (*line == '\0' || *line == '#') | |
382 | continue; | |
383 | ||
384 | ++testno; | |
385 | if (sscanf(line, "%d %d %d %d%n", &ntlsa, &ncert, &want, &want_depth, &off) != 4 | |
386 | || !allws(line + off)) { | |
387 | fprintf(stderr, "Expected tlsa count, cert count and result" | |
388 | " at test %d of %s\n", testno, path); | |
389 | return 0; | |
390 | } | |
391 | ||
392 | if ((ssl = SSL_new(ctx)) == NULL) | |
393 | return -1; | |
394 | SSL_set_connect_state(ssl); | |
395 | if (SSL_dane_enable(ssl, basename) <= 0) { | |
396 | SSL_free(ssl); | |
397 | return -1; | |
398 | } | |
399 | ||
400 | for (i = 0; i < ntlsa; ++i) { | |
401 | if ((line = read_to_eol(f)) == NULL || !tlsa_import_rr(ssl, line)) { | |
402 | SSL_free(ssl); | |
403 | return 0; | |
404 | } | |
405 | } | |
406 | ||
407 | /* Don't report old news */ | |
408 | ERR_clear_error(); | |
409 | chain = load_chain(f, ncert); | |
410 | if (chain == NULL) { | |
411 | SSL_free(ssl); | |
412 | return -1; | |
413 | } | |
414 | ||
415 | ok = verify_chain(ssl, chain); | |
416 | sk_X509_pop_free(chain, X509_free); | |
417 | err = SSL_get_verify_result(ssl); | |
c0a445a9 VD |
418 | /* |
419 | * Peek under the hood, normally TLSA match data is hidden when | |
420 | * verification fails, we can obtain any suppressed data by setting the | |
421 | * verification result to X509_V_OK before looking. | |
422 | */ | |
423 | SSL_set_verify_result(ssl, X509_V_OK); | |
170b7358 | 424 | mdpth = SSL_get0_dane_authority(ssl, NULL, NULL); |
c0a445a9 VD |
425 | /* Not needed any more, but lead by example and put the error back. */ |
426 | SSL_set_verify_result(ssl, err); | |
170b7358 VD |
427 | SSL_free(ssl); |
428 | ||
429 | if (ok < 0) { | |
430 | ret = 0; | |
431 | fprintf(stderr, "verify_chain internal error in %s test %d\n", | |
432 | path, testno); | |
433 | print_errors(); | |
434 | continue; | |
435 | } | |
436 | if (err != want || (want == 0 && !ok)) { | |
437 | ret = 0; | |
438 | if (err != want) { | |
439 | if (want == X509_V_OK) | |
440 | fprintf(stderr, "Verification failure in %s test %d: %d: %s\n", | |
441 | path, testno, err, X509_verify_cert_error_string(err)); | |
442 | else | |
443 | fprintf(stderr, "Unexpected error in %s test %d: %d: wanted %d\n", | |
444 | path, testno, err, want); | |
445 | } else { | |
446 | fprintf(stderr, "Verification failure in %s test %d: ok=0\n", | |
447 | path, testno); | |
448 | } | |
449 | print_errors(); | |
450 | continue; | |
451 | } | |
452 | if (mdpth != want_depth) { | |
453 | ret = 0; | |
454 | fprintf(stderr, "Wrong match depth, in %s test %d: wanted %d, got: %d\n", | |
455 | path, testno, want_depth, mdpth); | |
456 | } | |
457 | fprintf(stderr, "%s: test %d successful\n", path, testno); | |
458 | } | |
459 | ERR_clear_error(); | |
460 | ||
461 | return ret; | |
462 | } | |
463 | ||
464 | int main(int argc, char *argv[]) | |
465 | { | |
02b91dcf | 466 | BIO *f; |
170b7358 VD |
467 | BIO *bio_err; |
468 | SSL_CTX *ctx = NULL; | |
469 | const char *basedomain; | |
470 | const char *CAfile; | |
471 | const char *tlsafile; | |
bbd86bf5 | 472 | const char *p; |
170b7358 VD |
473 | int ret = 1; |
474 | ||
bbd86bf5 | 475 | progname = argv[0]; |
170b7358 | 476 | if (argc != 4) { |
71405d68 | 477 | test_usage(); |
fde2257f | 478 | EXIT(ret); |
170b7358 VD |
479 | } |
480 | basedomain = argv[1]; | |
481 | CAfile = argv[2]; | |
482 | tlsafile = argv[3]; | |
483 | ||
d1b10582 VD |
484 | bio_err = BIO_new_fp(stderr, BIO_NOCLOSE | BIO_FP_TEXT); |
485 | ||
bbd86bf5 RS |
486 | p = getenv("OPENSSL_DEBUG_MEMORY"); |
487 | if (p != NULL && strcmp(p, "on") == 0) | |
488 | CRYPTO_set_mem_debug(1); | |
e51511ce | 489 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON); |
bbd86bf5 | 490 | |
02b91dcf | 491 | f = BIO_new_file(tlsafile, "r"); |
170b7358 VD |
492 | if (f == NULL) { |
493 | fprintf(stderr, "%s: Error opening tlsa record file: '%s': %s\n", | |
494 | progname, tlsafile, strerror(errno)); | |
fde2257f | 495 | EXIT(ret); |
170b7358 VD |
496 | } |
497 | ||
170b7358 VD |
498 | ctx = SSL_CTX_new(TLS_client_method()); |
499 | if (SSL_CTX_dane_enable(ctx) <= 0) { | |
500 | print_errors(); | |
501 | goto end; | |
502 | } | |
503 | if (!SSL_CTX_load_verify_locations(ctx, CAfile, NULL)) { | |
504 | print_errors(); | |
505 | goto end; | |
506 | } | |
507 | if ((SSL_CTX_dane_mtype_set(ctx, EVP_sha512(), 2, 1)) <= 0) { | |
508 | print_errors(); | |
509 | goto end; | |
510 | } | |
511 | if ((SSL_CTX_dane_mtype_set(ctx, EVP_sha256(), 1, 2)) <= 0) { | |
512 | print_errors(); | |
513 | goto end; | |
514 | } | |
515 | ||
8da94770 | 516 | if (test_tlsafile(ctx, basedomain, f, tlsafile) <= 0) { |
170b7358 VD |
517 | print_errors(); |
518 | goto end; | |
519 | } | |
520 | ||
521 | ret = 0; | |
522 | ||
523 | end: | |
524 | ||
02b91dcf | 525 | BIO_free(f); |
170b7358 VD |
526 | SSL_CTX_free(ctx); |
527 | ||
c2e27310 | 528 | #ifndef OPENSSL_NO_CRYPTO_MDEBUG |
541e9565 DSH |
529 | if (CRYPTO_mem_leaks(bio_err) <= 0) |
530 | ret = 1; | |
7b0a09f9 | 531 | #endif |
170b7358 VD |
532 | BIO_free(bio_err); |
533 | EXIT(ret); | |
534 | } | |
535 | ||
536 | #include <internal/dane.h> | |
537 | ||
538 | static void store_ctx_dane_init(X509_STORE_CTX *store_ctx, SSL *ssl) | |
539 | { | |
540 | X509_STORE_CTX_set0_dane(store_ctx, SSL_get0_dane(ssl)); | |
541 | } |