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Commit | Line | Data |
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440e5d80 RS |
1 | /* |
2 | * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved. | |
170b7358 | 3 | * |
440e5d80 RS |
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 | |
170b7358 VD |
8 | */ |
9 | ||
10 | #include <stdio.h> | |
11 | #include <string.h> | |
12 | #include <ctype.h> | |
13 | #include <limits.h> | |
14 | #include <errno.h> | |
15 | ||
16 | #include <openssl/crypto.h> | |
17 | #include <openssl/evp.h> | |
18 | #include <openssl/x509.h> | |
19 | #include <openssl/ssl.h> | |
20 | #include <openssl/err.h> | |
21 | #include <openssl/conf.h> | |
22 | #ifndef OPENSSL_NO_ENGINE | |
23 | #include <openssl/engine.h> | |
24 | #endif | |
1f9d203d | 25 | #include "testutil.h" |
170b7358 | 26 | |
1f9d203d | 27 | #include "e_os.h" |
170b7358 | 28 | |
18295f0c RL |
29 | #define _UC(c) ((unsigned char)(c)) |
30 | ||
1f9d203d RS |
31 | static const char *basedomain; |
32 | static const char *CAfile; | |
33 | static const char *tlsafile; | |
170b7358 VD |
34 | |
35 | /* | |
36 | * Forward declaration, of function that uses internal interfaces, from headers | |
37 | * included at the end of this module. | |
38 | */ | |
39 | static void store_ctx_dane_init(X509_STORE_CTX *, SSL *); | |
40 | ||
41 | static int saved_errno; | |
42 | ||
43 | static void save_errno(void) | |
44 | { | |
45 | saved_errno = errno; | |
46 | } | |
47 | ||
48 | static int restore_errno(void) | |
49 | { | |
50 | int ret = errno; | |
51 | errno = saved_errno; | |
52 | return ret; | |
53 | } | |
54 | ||
170b7358 VD |
55 | static int verify_chain(SSL *ssl, STACK_OF(X509) *chain) |
56 | { | |
1f9d203d RS |
57 | X509_STORE_CTX *store_ctx = NULL; |
58 | SSL_CTX *ssl_ctx = NULL; | |
59 | X509_STORE *store = NULL; | |
60 | X509 *cert = NULL; | |
61 | int ret = 0; | |
170b7358 | 62 | int store_ctx_idx = SSL_get_ex_data_X509_STORE_CTX_idx(); |
170b7358 | 63 | |
1f9d203d RS |
64 | if (!TEST_ptr(store_ctx = X509_STORE_CTX_new()) |
65 | || !TEST_ptr(ssl_ctx = SSL_get_SSL_CTX(ssl)) | |
66 | || !TEST_ptr(store = SSL_CTX_get_cert_store(ssl_ctx)) | |
67 | || !TEST_ptr(cert = sk_X509_value(chain, 0)) | |
68 | || !TEST_true(X509_STORE_CTX_init(store_ctx, store, cert, chain)) | |
69 | || !TEST_true(X509_STORE_CTX_set_ex_data(store_ctx, store_ctx_idx, | |
70 | ssl))) | |
e5a5e3f3 | 71 | goto end; |
170b7358 VD |
72 | |
73 | X509_STORE_CTX_set_default(store_ctx, | |
74 | SSL_is_server(ssl) ? "ssl_client" : "ssl_server"); | |
75 | X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(store_ctx), | |
76 | SSL_get0_param(ssl)); | |
77 | store_ctx_dane_init(store_ctx, ssl); | |
78 | ||
1f9d203d | 79 | if (SSL_get_verify_callback(ssl) != NULL) |
dccd20d1 | 80 | X509_STORE_CTX_set_verify_cb(store_ctx, SSL_get_verify_callback(ssl)); |
170b7358 | 81 | |
1f9d203d RS |
82 | /* Mask "internal failures" (-1) from our return value. */ |
83 | if (!TEST_int_ge(ret = X509_verify_cert(store_ctx), 0)) | |
84 | ret = 0; | |
170b7358 VD |
85 | |
86 | SSL_set_verify_result(ssl, X509_STORE_CTX_get_error(store_ctx)); | |
87 | X509_STORE_CTX_cleanup(store_ctx); | |
1f9d203d | 88 | |
e5a5e3f3 | 89 | end: |
170b7358 | 90 | X509_STORE_CTX_free(store_ctx); |
1f9d203d | 91 | return ret; |
170b7358 VD |
92 | } |
93 | ||
02b91dcf | 94 | static STACK_OF(X509) *load_chain(BIO *fp, int nelem) |
170b7358 VD |
95 | { |
96 | int count; | |
97 | char *name = 0; | |
98 | char *header = 0; | |
99 | unsigned char *data = 0; | |
100 | long len; | |
dccd20d1 | 101 | char *errtype = 0; /* if error: cert or pkey? */ |
170b7358 VD |
102 | STACK_OF(X509) *chain; |
103 | typedef X509 *(*d2i_X509_t)(X509 **, const unsigned char **, long); | |
104 | ||
1f9d203d RS |
105 | if (!TEST_ptr(chain = sk_X509_new_null())) |
106 | goto err; | |
170b7358 VD |
107 | |
108 | for (count = 0; | |
dccd20d1 | 109 | count < nelem && errtype == 0 |
1f9d203d | 110 | && PEM_read_bio(fp, &name, &header, &data, &len) == 1; |
dccd20d1 | 111 | ++count) { |
dccd20d1 | 112 | if (strcmp(name, PEM_STRING_X509) == 0 |
1f9d203d RS |
113 | || strcmp(name, PEM_STRING_X509_TRUSTED) == 0 |
114 | || strcmp(name, PEM_STRING_X509_OLD) == 0) { | |
115 | d2i_X509_t d = strcmp(name, PEM_STRING_X509_TRUSTED) != 0 | |
116 | ? d2i_X509_AUX : d2i_X509; | |
117 | X509 *cert; | |
118 | const unsigned char *p = data; | |
119 | ||
120 | if (!TEST_ptr(cert = d(0, &p, len)) | |
121 | || !TEST_long_eq(p - data, len)) { | |
122 | TEST_info("Certificate parsing error"); | |
dccd20d1 F |
123 | goto err; |
124 | } | |
1f9d203d RS |
125 | |
126 | if (!TEST_true(sk_X509_push(chain, cert))) | |
127 | goto err; | |
dccd20d1 | 128 | } else { |
1f9d203d | 129 | TEST_info("Unknown chain file object %s", name); |
dccd20d1 F |
130 | goto err; |
131 | } | |
132 | ||
dccd20d1 F |
133 | OPENSSL_free(name); |
134 | OPENSSL_free(header); | |
135 | OPENSSL_free(data); | |
9e206ce5 P |
136 | name = header = NULL; |
137 | data = NULL; | |
170b7358 VD |
138 | } |
139 | ||
170b7358 VD |
140 | if (count == nelem) { |
141 | ERR_clear_error(); | |
142 | return chain; | |
143 | } | |
144 | ||
145 | err: | |
1f9d203d RS |
146 | OPENSSL_free(name); |
147 | OPENSSL_free(header); | |
148 | OPENSSL_free(data); | |
170b7358 | 149 | sk_X509_pop_free(chain, X509_free); |
170b7358 VD |
150 | return NULL; |
151 | } | |
152 | ||
02b91dcf | 153 | static char *read_to_eol(BIO *f) |
170b7358 VD |
154 | { |
155 | static char buf[1024]; | |
156 | int n; | |
157 | ||
02b91dcf | 158 | if (!BIO_gets(f, buf, sizeof(buf))) |
170b7358 VD |
159 | return NULL; |
160 | ||
161 | n = strlen(buf); | |
1f9d203d RS |
162 | if (buf[n - 1] != '\n') { |
163 | if (n + 1 == sizeof(buf)) | |
164 | TEST_error("input too long"); | |
165 | else | |
166 | TEST_error("EOF before newline"); | |
170b7358 VD |
167 | return NULL; |
168 | } | |
169 | ||
170 | /* Trim trailing whitespace */ | |
1f9d203d | 171 | while (n > 0 && isspace(_UC(buf[n - 1]))) |
170b7358 VD |
172 | buf[--n] = '\0'; |
173 | ||
174 | return buf; | |
175 | } | |
176 | ||
177 | /* | |
178 | * Hex decoder that tolerates optional whitespace | |
179 | */ | |
180 | static ossl_ssize_t hexdecode(const char *in, void *result) | |
181 | { | |
182 | unsigned char **out = (unsigned char **)result; | |
1f9d203d RS |
183 | unsigned char *ret; |
184 | unsigned char *cp; | |
170b7358 VD |
185 | uint8_t byte; |
186 | int nibble = 0; | |
187 | ||
1f9d203d | 188 | if (!TEST_ptr(ret = OPENSSL_malloc(strlen(in) / 2))) |
170b7358 | 189 | return -1; |
1f9d203d | 190 | cp = ret; |
170b7358 VD |
191 | |
192 | for (byte = 0; *in; ++in) { | |
49445f21 | 193 | int x; |
170b7358 | 194 | |
18295f0c | 195 | if (isspace(_UC(*in))) |
170b7358 | 196 | continue; |
49445f21 RS |
197 | x = OPENSSL_hexchar2int(*in); |
198 | if (x < 0) { | |
170b7358 VD |
199 | OPENSSL_free(ret); |
200 | return 0; | |
201 | } | |
49445f21 | 202 | byte |= (char)x; |
170b7358 VD |
203 | if ((nibble ^= 1) == 0) { |
204 | *cp++ = byte; | |
205 | byte = 0; | |
206 | } else { | |
207 | byte <<= 4; | |
208 | } | |
209 | } | |
210 | if (nibble != 0) { | |
211 | OPENSSL_free(ret); | |
212 | return 0; | |
213 | } | |
214 | ||
215 | return cp - (*out = ret); | |
216 | } | |
217 | ||
218 | static ossl_ssize_t checked_uint8(const char *in, void *out) | |
219 | { | |
220 | uint8_t *result = (uint8_t *)out; | |
221 | const char *cp = in; | |
222 | char *endp; | |
223 | long v; | |
224 | int e; | |
225 | ||
226 | save_errno(); | |
227 | v = strtol(cp, &endp, 10); | |
228 | e = restore_errno(); | |
229 | ||
230 | if (((v == LONG_MIN || v == LONG_MAX) && e == ERANGE) || | |
18295f0c | 231 | endp == cp || !isspace(_UC(*endp)) || |
170b7358 VD |
232 | v != (*(uint8_t *)result = (uint8_t) v)) { |
233 | return -1; | |
234 | } | |
18295f0c | 235 | for (cp = endp; isspace(_UC(*cp)); ++cp) |
170b7358 VD |
236 | continue; |
237 | return cp - in; | |
238 | } | |
239 | ||
bbd86bf5 RS |
240 | struct tlsa_field { |
241 | void *var; | |
242 | const char *name; | |
243 | ossl_ssize_t (*parser)(const char *, void *); | |
244 | }; | |
245 | ||
170b7358 VD |
246 | static int tlsa_import_rr(SSL *ssl, const char *rrdata) |
247 | { | |
bbd86bf5 RS |
248 | static uint8_t usage; |
249 | static uint8_t selector; | |
250 | static uint8_t mtype; | |
251 | static unsigned char *data = NULL; | |
252 | static struct tlsa_field tlsa_fields[] = { | |
170b7358 VD |
253 | { &usage, "usage", checked_uint8 }, |
254 | { &selector, "selector", checked_uint8 }, | |
255 | { &mtype, "mtype", checked_uint8 }, | |
256 | { &data, "data", hexdecode }, | |
257 | { NULL, } | |
258 | }; | |
bbd86bf5 | 259 | int ret; |
170b7358 | 260 | struct tlsa_field *f; |
bbd86bf5 RS |
261 | const char *cp = rrdata; |
262 | ossl_ssize_t len = 0; | |
170b7358 VD |
263 | |
264 | for (f = tlsa_fields; f->var; ++f) { | |
265 | if ((len = f->parser(cp += len, f->var)) <= 0) { | |
1f9d203d | 266 | TEST_info("bad TLSA %s field in: %s", f->name, rrdata); |
170b7358 VD |
267 | return 0; |
268 | } | |
269 | } | |
1f9d203d | 270 | |
170b7358 VD |
271 | ret = SSL_dane_tlsa_add(ssl, usage, selector, mtype, data, len); |
272 | OPENSSL_free(data); | |
170b7358 | 273 | if (ret == 0) { |
1f9d203d | 274 | TEST_info("unusable TLSA rrdata: %s", rrdata); |
170b7358 VD |
275 | return 0; |
276 | } | |
277 | if (ret < 0) { | |
1f9d203d | 278 | TEST_info("error loading TLSA rrdata: %s", rrdata); |
170b7358 VD |
279 | return 0; |
280 | } | |
1f9d203d | 281 | |
170b7358 VD |
282 | return ret; |
283 | } | |
284 | ||
285 | static int allws(const char *cp) | |
286 | { | |
287 | while (*cp) | |
18295f0c | 288 | if (!isspace(_UC(*cp++))) |
170b7358 VD |
289 | return 0; |
290 | return 1; | |
291 | } | |
292 | ||
aebe9e39 | 293 | static int test_tlsafile(SSL_CTX *ctx, const char *base_name, |
02b91dcf | 294 | BIO *f, const char *path) |
170b7358 VD |
295 | { |
296 | char *line; | |
297 | int testno = 0; | |
298 | int ret = 1; | |
299 | SSL *ssl; | |
300 | ||
301 | while (ret > 0 && (line = read_to_eol(f)) != NULL) { | |
302 | STACK_OF(X509) *chain; | |
303 | int ntlsa; | |
304 | int ncert; | |
5ae4ceb9 | 305 | int noncheck; |
170b7358 VD |
306 | int want; |
307 | int want_depth; | |
308 | int off; | |
309 | int i; | |
310 | int ok; | |
311 | int err; | |
312 | int mdpth; | |
313 | ||
314 | if (*line == '\0' || *line == '#') | |
315 | continue; | |
316 | ||
317 | ++testno; | |
5ae4ceb9 VD |
318 | if (sscanf(line, "%d %d %d %d %d%n", |
319 | &ntlsa, &ncert, &noncheck, &want, &want_depth, &off) != 5 | |
170b7358 | 320 | || !allws(line + off)) { |
1f9d203d | 321 | TEST_error("Malformed line for test %d", testno); |
170b7358 VD |
322 | return 0; |
323 | } | |
324 | ||
1f9d203d RS |
325 | if (!TEST_ptr(ssl = SSL_new(ctx))) |
326 | return 0; | |
170b7358 | 327 | SSL_set_connect_state(ssl); |
aebe9e39 | 328 | if (SSL_dane_enable(ssl, base_name) <= 0) { |
170b7358 | 329 | SSL_free(ssl); |
1f9d203d | 330 | return 0; |
170b7358 | 331 | } |
5ae4ceb9 VD |
332 | if (noncheck) |
333 | SSL_dane_set_flags(ssl, DANE_FLAG_NO_DANE_EE_NAMECHECKS); | |
170b7358 VD |
334 | |
335 | for (i = 0; i < ntlsa; ++i) { | |
336 | if ((line = read_to_eol(f)) == NULL || !tlsa_import_rr(ssl, line)) { | |
337 | SSL_free(ssl); | |
338 | return 0; | |
339 | } | |
340 | } | |
341 | ||
342 | /* Don't report old news */ | |
343 | ERR_clear_error(); | |
1f9d203d | 344 | if (!TEST_ptr(chain = load_chain(f, ncert))) { |
170b7358 | 345 | SSL_free(ssl); |
1f9d203d | 346 | return 0; |
170b7358 VD |
347 | } |
348 | ||
349 | ok = verify_chain(ssl, chain); | |
350 | sk_X509_pop_free(chain, X509_free); | |
351 | err = SSL_get_verify_result(ssl); | |
c0a445a9 VD |
352 | /* |
353 | * Peek under the hood, normally TLSA match data is hidden when | |
354 | * verification fails, we can obtain any suppressed data by setting the | |
355 | * verification result to X509_V_OK before looking. | |
356 | */ | |
357 | SSL_set_verify_result(ssl, X509_V_OK); | |
170b7358 | 358 | mdpth = SSL_get0_dane_authority(ssl, NULL, NULL); |
c0a445a9 VD |
359 | /* Not needed any more, but lead by example and put the error back. */ |
360 | SSL_set_verify_result(ssl, err); | |
170b7358 VD |
361 | SSL_free(ssl); |
362 | ||
1f9d203d RS |
363 | if (!TEST_int_eq(err, want)) { |
364 | if (want == X509_V_OK) | |
365 | TEST_info("Verification failure in test %d: %d=%s", | |
366 | testno, err, X509_verify_cert_error_string(err)); | |
367 | else | |
368 | TEST_info("Unexpected error in test %d", testno); | |
170b7358 | 369 | ret = 0; |
170b7358 VD |
370 | continue; |
371 | } | |
1f9d203d RS |
372 | if (!TEST_false(want == 0 && ok == 0)) { |
373 | TEST_info("Verification failure in test %d: ok=0", testno); | |
170b7358 | 374 | ret = 0; |
170b7358 VD |
375 | continue; |
376 | } | |
1f9d203d RS |
377 | if (!TEST_int_eq(mdpth, want_depth)) { |
378 | TEST_info("In test test %d", testno); | |
170b7358 | 379 | ret = 0; |
170b7358 | 380 | } |
170b7358 VD |
381 | } |
382 | ERR_clear_error(); | |
383 | ||
384 | return ret; | |
385 | } | |
386 | ||
1f9d203d | 387 | static int run_tlsatest() |
170b7358 | 388 | { |
170b7358 | 389 | SSL_CTX *ctx = NULL; |
1f9d203d RS |
390 | BIO *f = NULL; |
391 | int ret = 0; | |
392 | ||
393 | if (!TEST_ptr(f = BIO_new_file(tlsafile, "r")) | |
394 | || !TEST_ptr(ctx = SSL_CTX_new(TLS_client_method())) | |
395 | || !TEST_int_gt(SSL_CTX_dane_enable(ctx), 0) | |
396 | || !TEST_true(SSL_CTX_load_verify_locations(ctx, CAfile, NULL)) | |
397 | || !TEST_int_gt(SSL_CTX_dane_mtype_set(ctx, EVP_sha512(), 2, 1), | |
398 | 0) | |
399 | || !TEST_int_gt(SSL_CTX_dane_mtype_set(ctx, EVP_sha256(), 1, 2), | |
400 | 0) | |
401 | || !TEST_int_gt(test_tlsafile(ctx, basedomain, f, tlsafile), 0)) | |
402 | goto end; | |
403 | ret = 1; | |
404 | ||
405 | end: | |
406 | BIO_free(f); | |
407 | SSL_CTX_free(ctx); | |
408 | ||
409 | return ret; | |
410 | } | |
411 | ||
412 | int test_main(int argc, char *argv[]) | |
413 | { | |
414 | int ret = 0; | |
170b7358 VD |
415 | |
416 | if (argc != 4) { | |
1f9d203d RS |
417 | TEST_error("Usage error: danetest basedomain CAfile tlsafile"); |
418 | return 0; | |
170b7358 VD |
419 | } |
420 | basedomain = argv[1]; | |
421 | CAfile = argv[2]; | |
422 | tlsafile = argv[3]; | |
423 | ||
1f9d203d | 424 | ADD_TEST(run_tlsatest); |
d1b10582 | 425 | |
1f9d203d RS |
426 | ret = run_tests(argv[0]); |
427 | return ret; | |
170b7358 VD |
428 | } |
429 | ||
430 | #include <internal/dane.h> | |
431 | ||
432 | static void store_ctx_dane_init(X509_STORE_CTX *store_ctx, SSL *ssl) | |
433 | { | |
434 | X509_STORE_CTX_set0_dane(store_ctx, SSL_get0_dane(ssl)); | |
435 | } |