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1 | /* | |
2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. | |
3 | * | |
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 | |
8 | */ | |
9 | ||
10 | /* ==================================================================== | |
11 | * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. | |
12 | * ECC cipher suite support in OpenSSL originally developed by | |
13 | * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. | |
14 | */ | |
15 | /* ==================================================================== | |
16 | * Copyright 2005 Nokia. All rights reserved. | |
17 | * | |
18 | * The portions of the attached software ("Contribution") is developed by | |
19 | * Nokia Corporation and is licensed pursuant to the OpenSSL open source | |
20 | * license. | |
21 | * | |
22 | * The Contribution, originally written by Mika Kousa and Pasi Eronen of | |
23 | * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites | |
24 | * support (see RFC 4279) to OpenSSL. | |
25 | * | |
26 | * No patent licenses or other rights except those expressly stated in | |
27 | * the OpenSSL open source license shall be deemed granted or received | |
28 | * expressly, by implication, estoppel, or otherwise. | |
29 | * | |
30 | * No assurances are provided by Nokia that the Contribution does not | |
31 | * infringe the patent or other intellectual property rights of any third | |
32 | * party or that the license provides you with all the necessary rights | |
33 | * to make use of the Contribution. | |
34 | * | |
35 | * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN | |
36 | * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA | |
37 | * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY | |
38 | * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR | |
39 | * OTHERWISE. | |
40 | */ | |
41 | ||
42 | #include <assert.h> | |
43 | #include <stdio.h> | |
44 | #include "ssl_locl.h" | |
45 | #include <openssl/objects.h> | |
46 | #include <openssl/lhash.h> | |
47 | #include <openssl/x509v3.h> | |
48 | #include <openssl/rand.h> | |
49 | #include <openssl/ocsp.h> | |
50 | #include <openssl/dh.h> | |
51 | #include <openssl/engine.h> | |
52 | #include <openssl/async.h> | |
53 | #include <openssl/ct.h> | |
54 | ||
55 | const char SSL_version_str[] = OPENSSL_VERSION_TEXT; | |
56 | ||
57 | SSL3_ENC_METHOD ssl3_undef_enc_method = { | |
58 | /* | |
59 | * evil casts, but these functions are only called if there's a library | |
60 | * bug | |
61 | */ | |
62 | (int (*)(SSL *, SSL3_RECORD *, size_t, int))ssl_undefined_function, | |
63 | (int (*)(SSL *, SSL3_RECORD *, unsigned char *, int))ssl_undefined_function, | |
64 | ssl_undefined_function, | |
65 | (int (*)(SSL *, unsigned char *, unsigned char *, size_t, size_t *)) | |
66 | ssl_undefined_function, | |
67 | (int (*)(SSL *, int))ssl_undefined_function, | |
68 | (size_t (*)(SSL *, const char *, size_t, unsigned char *)) | |
69 | ssl_undefined_function, | |
70 | NULL, /* client_finished_label */ | |
71 | 0, /* client_finished_label_len */ | |
72 | NULL, /* server_finished_label */ | |
73 | 0, /* server_finished_label_len */ | |
74 | (int (*)(int))ssl_undefined_function, | |
75 | (int (*)(SSL *, unsigned char *, size_t, const char *, | |
76 | size_t, const unsigned char *, size_t, | |
77 | int use_context))ssl_undefined_function, | |
78 | }; | |
79 | ||
80 | struct ssl_async_args { | |
81 | SSL *s; | |
82 | void *buf; | |
83 | size_t num; | |
84 | enum { READFUNC, WRITEFUNC, OTHERFUNC } type; | |
85 | union { | |
86 | int (*func_read) (SSL *, void *, size_t, size_t *); | |
87 | int (*func_write) (SSL *, const void *, size_t, size_t *); | |
88 | int (*func_other) (SSL *); | |
89 | } f; | |
90 | }; | |
91 | ||
92 | static const struct { | |
93 | uint8_t mtype; | |
94 | uint8_t ord; | |
95 | int nid; | |
96 | } dane_mds[] = { | |
97 | { | |
98 | DANETLS_MATCHING_FULL, 0, NID_undef | |
99 | }, | |
100 | { | |
101 | DANETLS_MATCHING_2256, 1, NID_sha256 | |
102 | }, | |
103 | { | |
104 | DANETLS_MATCHING_2512, 2, NID_sha512 | |
105 | }, | |
106 | }; | |
107 | ||
108 | static int dane_ctx_enable(struct dane_ctx_st *dctx) | |
109 | { | |
110 | const EVP_MD **mdevp; | |
111 | uint8_t *mdord; | |
112 | uint8_t mdmax = DANETLS_MATCHING_LAST; | |
113 | int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */ | |
114 | size_t i; | |
115 | ||
116 | if (dctx->mdevp != NULL) | |
117 | return 1; | |
118 | ||
119 | mdevp = OPENSSL_zalloc(n * sizeof(*mdevp)); | |
120 | mdord = OPENSSL_zalloc(n * sizeof(*mdord)); | |
121 | ||
122 | if (mdord == NULL || mdevp == NULL) { | |
123 | OPENSSL_free(mdord); | |
124 | OPENSSL_free(mdevp); | |
125 | SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE); | |
126 | return 0; | |
127 | } | |
128 | ||
129 | /* Install default entries */ | |
130 | for (i = 0; i < OSSL_NELEM(dane_mds); ++i) { | |
131 | const EVP_MD *md; | |
132 | ||
133 | if (dane_mds[i].nid == NID_undef || | |
134 | (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL) | |
135 | continue; | |
136 | mdevp[dane_mds[i].mtype] = md; | |
137 | mdord[dane_mds[i].mtype] = dane_mds[i].ord; | |
138 | } | |
139 | ||
140 | dctx->mdevp = mdevp; | |
141 | dctx->mdord = mdord; | |
142 | dctx->mdmax = mdmax; | |
143 | ||
144 | return 1; | |
145 | } | |
146 | ||
147 | static void dane_ctx_final(struct dane_ctx_st *dctx) | |
148 | { | |
149 | OPENSSL_free(dctx->mdevp); | |
150 | dctx->mdevp = NULL; | |
151 | ||
152 | OPENSSL_free(dctx->mdord); | |
153 | dctx->mdord = NULL; | |
154 | dctx->mdmax = 0; | |
155 | } | |
156 | ||
157 | static void tlsa_free(danetls_record *t) | |
158 | { | |
159 | if (t == NULL) | |
160 | return; | |
161 | OPENSSL_free(t->data); | |
162 | EVP_PKEY_free(t->spki); | |
163 | OPENSSL_free(t); | |
164 | } | |
165 | ||
166 | static void dane_final(SSL_DANE *dane) | |
167 | { | |
168 | sk_danetls_record_pop_free(dane->trecs, tlsa_free); | |
169 | dane->trecs = NULL; | |
170 | ||
171 | sk_X509_pop_free(dane->certs, X509_free); | |
172 | dane->certs = NULL; | |
173 | ||
174 | X509_free(dane->mcert); | |
175 | dane->mcert = NULL; | |
176 | dane->mtlsa = NULL; | |
177 | dane->mdpth = -1; | |
178 | dane->pdpth = -1; | |
179 | } | |
180 | ||
181 | /* | |
182 | * dane_copy - Copy dane configuration, sans verification state. | |
183 | */ | |
184 | static int ssl_dane_dup(SSL *to, SSL *from) | |
185 | { | |
186 | int num; | |
187 | int i; | |
188 | ||
189 | if (!DANETLS_ENABLED(&from->dane)) | |
190 | return 1; | |
191 | ||
192 | dane_final(&to->dane); | |
193 | to->dane.flags = from->dane.flags; | |
194 | to->dane.dctx = &to->ctx->dane; | |
195 | to->dane.trecs = sk_danetls_record_new_null(); | |
196 | ||
197 | if (to->dane.trecs == NULL) { | |
198 | SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE); | |
199 | return 0; | |
200 | } | |
201 | ||
202 | num = sk_danetls_record_num(from->dane.trecs); | |
203 | for (i = 0; i < num; ++i) { | |
204 | danetls_record *t = sk_danetls_record_value(from->dane.trecs, i); | |
205 | ||
206 | if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype, | |
207 | t->data, t->dlen) <= 0) | |
208 | return 0; | |
209 | } | |
210 | return 1; | |
211 | } | |
212 | ||
213 | static int dane_mtype_set(struct dane_ctx_st *dctx, | |
214 | const EVP_MD *md, uint8_t mtype, uint8_t ord) | |
215 | { | |
216 | int i; | |
217 | ||
218 | if (mtype == DANETLS_MATCHING_FULL && md != NULL) { | |
219 | SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL); | |
220 | return 0; | |
221 | } | |
222 | ||
223 | if (mtype > dctx->mdmax) { | |
224 | const EVP_MD **mdevp; | |
225 | uint8_t *mdord; | |
226 | int n = ((int)mtype) + 1; | |
227 | ||
228 | mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp)); | |
229 | if (mdevp == NULL) { | |
230 | SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE); | |
231 | return -1; | |
232 | } | |
233 | dctx->mdevp = mdevp; | |
234 | ||
235 | mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord)); | |
236 | if (mdord == NULL) { | |
237 | SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE); | |
238 | return -1; | |
239 | } | |
240 | dctx->mdord = mdord; | |
241 | ||
242 | /* Zero-fill any gaps */ | |
243 | for (i = dctx->mdmax + 1; i < mtype; ++i) { | |
244 | mdevp[i] = NULL; | |
245 | mdord[i] = 0; | |
246 | } | |
247 | ||
248 | dctx->mdmax = mtype; | |
249 | } | |
250 | ||
251 | dctx->mdevp[mtype] = md; | |
252 | /* Coerce ordinal of disabled matching types to 0 */ | |
253 | dctx->mdord[mtype] = (md == NULL) ? 0 : ord; | |
254 | ||
255 | return 1; | |
256 | } | |
257 | ||
258 | static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype) | |
259 | { | |
260 | if (mtype > dane->dctx->mdmax) | |
261 | return NULL; | |
262 | return dane->dctx->mdevp[mtype]; | |
263 | } | |
264 | ||
265 | static int dane_tlsa_add(SSL_DANE *dane, | |
266 | uint8_t usage, | |
267 | uint8_t selector, | |
268 | uint8_t mtype, unsigned char *data, size_t dlen) | |
269 | { | |
270 | danetls_record *t; | |
271 | const EVP_MD *md = NULL; | |
272 | int ilen = (int)dlen; | |
273 | int i; | |
274 | int num; | |
275 | ||
276 | if (dane->trecs == NULL) { | |
277 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED); | |
278 | return -1; | |
279 | } | |
280 | ||
281 | if (ilen < 0 || dlen != (size_t)ilen) { | |
282 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH); | |
283 | return 0; | |
284 | } | |
285 | ||
286 | if (usage > DANETLS_USAGE_LAST) { | |
287 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE); | |
288 | return 0; | |
289 | } | |
290 | ||
291 | if (selector > DANETLS_SELECTOR_LAST) { | |
292 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR); | |
293 | return 0; | |
294 | } | |
295 | ||
296 | if (mtype != DANETLS_MATCHING_FULL) { | |
297 | md = tlsa_md_get(dane, mtype); | |
298 | if (md == NULL) { | |
299 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE); | |
300 | return 0; | |
301 | } | |
302 | } | |
303 | ||
304 | if (md != NULL && dlen != (size_t)EVP_MD_size(md)) { | |
305 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH); | |
306 | return 0; | |
307 | } | |
308 | if (!data) { | |
309 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA); | |
310 | return 0; | |
311 | } | |
312 | ||
313 | if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) { | |
314 | SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE); | |
315 | return -1; | |
316 | } | |
317 | ||
318 | t->usage = usage; | |
319 | t->selector = selector; | |
320 | t->mtype = mtype; | |
321 | t->data = OPENSSL_malloc(dlen); | |
322 | if (t->data == NULL) { | |
323 | tlsa_free(t); | |
324 | SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE); | |
325 | return -1; | |
326 | } | |
327 | memcpy(t->data, data, dlen); | |
328 | t->dlen = dlen; | |
329 | ||
330 | /* Validate and cache full certificate or public key */ | |
331 | if (mtype == DANETLS_MATCHING_FULL) { | |
332 | const unsigned char *p = data; | |
333 | X509 *cert = NULL; | |
334 | EVP_PKEY *pkey = NULL; | |
335 | ||
336 | switch (selector) { | |
337 | case DANETLS_SELECTOR_CERT: | |
338 | if (!d2i_X509(&cert, &p, ilen) || p < data || | |
339 | dlen != (size_t)(p - data)) { | |
340 | tlsa_free(t); | |
341 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE); | |
342 | return 0; | |
343 | } | |
344 | if (X509_get0_pubkey(cert) == NULL) { | |
345 | tlsa_free(t); | |
346 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE); | |
347 | return 0; | |
348 | } | |
349 | ||
350 | if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) { | |
351 | X509_free(cert); | |
352 | break; | |
353 | } | |
354 | ||
355 | /* | |
356 | * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA | |
357 | * records that contain full certificates of trust-anchors that are | |
358 | * not present in the wire chain. For usage PKIX-TA(0), we augment | |
359 | * the chain with untrusted Full(0) certificates from DNS, in case | |
360 | * they are missing from the chain. | |
361 | */ | |
362 | if ((dane->certs == NULL && | |
363 | (dane->certs = sk_X509_new_null()) == NULL) || | |
364 | !sk_X509_push(dane->certs, cert)) { | |
365 | SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE); | |
366 | X509_free(cert); | |
367 | tlsa_free(t); | |
368 | return -1; | |
369 | } | |
370 | break; | |
371 | ||
372 | case DANETLS_SELECTOR_SPKI: | |
373 | if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data || | |
374 | dlen != (size_t)(p - data)) { | |
375 | tlsa_free(t); | |
376 | SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY); | |
377 | return 0; | |
378 | } | |
379 | ||
380 | /* | |
381 | * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA | |
382 | * records that contain full bare keys of trust-anchors that are | |
383 | * not present in the wire chain. | |
384 | */ | |
385 | if (usage == DANETLS_USAGE_DANE_TA) | |
386 | t->spki = pkey; | |
387 | else | |
388 | EVP_PKEY_free(pkey); | |
389 | break; | |
390 | } | |
391 | } | |
392 | ||
393 | /*- | |
394 | * Find the right insertion point for the new record. | |
395 | * | |
396 | * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that | |
397 | * they can be processed first, as they require no chain building, and no | |
398 | * expiration or hostname checks. Because DANE-EE(3) is numerically | |
399 | * largest, this is accomplished via descending sort by "usage". | |
400 | * | |
401 | * We also sort in descending order by matching ordinal to simplify | |
402 | * the implementation of digest agility in the verification code. | |
403 | * | |
404 | * The choice of order for the selector is not significant, so we | |
405 | * use the same descending order for consistency. | |
406 | */ | |
407 | num = sk_danetls_record_num(dane->trecs); | |
408 | for (i = 0; i < num; ++i) { | |
409 | danetls_record *rec = sk_danetls_record_value(dane->trecs, i); | |
410 | ||
411 | if (rec->usage > usage) | |
412 | continue; | |
413 | if (rec->usage < usage) | |
414 | break; | |
415 | if (rec->selector > selector) | |
416 | continue; | |
417 | if (rec->selector < selector) | |
418 | break; | |
419 | if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype]) | |
420 | continue; | |
421 | break; | |
422 | } | |
423 | ||
424 | if (!sk_danetls_record_insert(dane->trecs, t, i)) { | |
425 | tlsa_free(t); | |
426 | SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE); | |
427 | return -1; | |
428 | } | |
429 | dane->umask |= DANETLS_USAGE_BIT(usage); | |
430 | ||
431 | return 1; | |
432 | } | |
433 | ||
434 | static void clear_ciphers(SSL *s) | |
435 | { | |
436 | /* clear the current cipher */ | |
437 | ssl_clear_cipher_ctx(s); | |
438 | ssl_clear_hash_ctx(&s->read_hash); | |
439 | ssl_clear_hash_ctx(&s->write_hash); | |
440 | } | |
441 | ||
442 | int SSL_clear(SSL *s) | |
443 | { | |
444 | if (s->method == NULL) { | |
445 | SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED); | |
446 | return (0); | |
447 | } | |
448 | ||
449 | if (ssl_clear_bad_session(s)) { | |
450 | SSL_SESSION_free(s->session); | |
451 | s->session = NULL; | |
452 | } | |
453 | ||
454 | s->error = 0; | |
455 | s->hit = 0; | |
456 | s->shutdown = 0; | |
457 | ||
458 | if (s->renegotiate) { | |
459 | SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR); | |
460 | return 0; | |
461 | } | |
462 | ||
463 | ossl_statem_clear(s); | |
464 | ||
465 | s->version = s->method->version; | |
466 | s->client_version = s->version; | |
467 | s->rwstate = SSL_NOTHING; | |
468 | ||
469 | BUF_MEM_free(s->init_buf); | |
470 | s->init_buf = NULL; | |
471 | clear_ciphers(s); | |
472 | s->first_packet = 0; | |
473 | ||
474 | /* Reset DANE verification result state */ | |
475 | s->dane.mdpth = -1; | |
476 | s->dane.pdpth = -1; | |
477 | X509_free(s->dane.mcert); | |
478 | s->dane.mcert = NULL; | |
479 | s->dane.mtlsa = NULL; | |
480 | ||
481 | /* Clear the verification result peername */ | |
482 | X509_VERIFY_PARAM_move_peername(s->param, NULL); | |
483 | ||
484 | /* | |
485 | * Check to see if we were changed into a different method, if so, revert | |
486 | * back if we are not doing session-id reuse. | |
487 | */ | |
488 | if (!ossl_statem_get_in_handshake(s) && (s->session == NULL) | |
489 | && (s->method != s->ctx->method)) { | |
490 | s->method->ssl_free(s); | |
491 | s->method = s->ctx->method; | |
492 | if (!s->method->ssl_new(s)) | |
493 | return (0); | |
494 | } else | |
495 | s->method->ssl_clear(s); | |
496 | ||
497 | RECORD_LAYER_clear(&s->rlayer); | |
498 | ||
499 | return (1); | |
500 | } | |
501 | ||
502 | /** Used to change an SSL_CTXs default SSL method type */ | |
503 | int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) | |
504 | { | |
505 | STACK_OF(SSL_CIPHER) *sk; | |
506 | ||
507 | ctx->method = meth; | |
508 | ||
509 | sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), | |
510 | &(ctx->cipher_list_by_id), | |
511 | SSL_DEFAULT_CIPHER_LIST, ctx->cert); | |
512 | if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { | |
513 | SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); | |
514 | return (0); | |
515 | } | |
516 | return (1); | |
517 | } | |
518 | ||
519 | SSL *SSL_new(SSL_CTX *ctx) | |
520 | { | |
521 | SSL *s; | |
522 | ||
523 | if (ctx == NULL) { | |
524 | SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX); | |
525 | return (NULL); | |
526 | } | |
527 | if (ctx->method == NULL) { | |
528 | SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); | |
529 | return (NULL); | |
530 | } | |
531 | ||
532 | s = OPENSSL_zalloc(sizeof(*s)); | |
533 | if (s == NULL) | |
534 | goto err; | |
535 | ||
536 | s->lock = CRYPTO_THREAD_lock_new(); | |
537 | if (s->lock == NULL) { | |
538 | SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE); | |
539 | OPENSSL_free(s); | |
540 | return NULL; | |
541 | } | |
542 | ||
543 | RECORD_LAYER_init(&s->rlayer, s); | |
544 | ||
545 | s->options = ctx->options; | |
546 | s->dane.flags = ctx->dane.flags; | |
547 | s->min_proto_version = ctx->min_proto_version; | |
548 | s->max_proto_version = ctx->max_proto_version; | |
549 | s->mode = ctx->mode; | |
550 | s->max_cert_list = ctx->max_cert_list; | |
551 | s->references = 1; | |
552 | ||
553 | /* | |
554 | * Earlier library versions used to copy the pointer to the CERT, not | |
555 | * its contents; only when setting new parameters for the per-SSL | |
556 | * copy, ssl_cert_new would be called (and the direct reference to | |
557 | * the per-SSL_CTX settings would be lost, but those still were | |
558 | * indirectly accessed for various purposes, and for that reason they | |
559 | * used to be known as s->ctx->default_cert). Now we don't look at the | |
560 | * SSL_CTX's CERT after having duplicated it once. | |
561 | */ | |
562 | s->cert = ssl_cert_dup(ctx->cert); | |
563 | if (s->cert == NULL) | |
564 | goto err; | |
565 | ||
566 | RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead); | |
567 | s->msg_callback = ctx->msg_callback; | |
568 | s->msg_callback_arg = ctx->msg_callback_arg; | |
569 | s->verify_mode = ctx->verify_mode; | |
570 | s->not_resumable_session_cb = ctx->not_resumable_session_cb; | |
571 | s->sid_ctx_length = ctx->sid_ctx_length; | |
572 | OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); | |
573 | memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); | |
574 | s->verify_callback = ctx->default_verify_callback; | |
575 | s->generate_session_id = ctx->generate_session_id; | |
576 | ||
577 | s->param = X509_VERIFY_PARAM_new(); | |
578 | if (s->param == NULL) | |
579 | goto err; | |
580 | X509_VERIFY_PARAM_inherit(s->param, ctx->param); | |
581 | s->quiet_shutdown = ctx->quiet_shutdown; | |
582 | s->max_send_fragment = ctx->max_send_fragment; | |
583 | s->split_send_fragment = ctx->split_send_fragment; | |
584 | s->max_pipelines = ctx->max_pipelines; | |
585 | if (s->max_pipelines > 1) | |
586 | RECORD_LAYER_set_read_ahead(&s->rlayer, 1); | |
587 | if (ctx->default_read_buf_len > 0) | |
588 | SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len); | |
589 | ||
590 | SSL_CTX_up_ref(ctx); | |
591 | s->ctx = ctx; | |
592 | s->ext.debug_cb = 0; | |
593 | s->ext.debug_arg = NULL; | |
594 | s->ext.ticket_expected = 0; | |
595 | s->ext.status_type = ctx->ext.status_type; | |
596 | s->ext.status_expected = 0; | |
597 | s->ext.ocsp.ids = NULL; | |
598 | s->ext.ocsp.exts = NULL; | |
599 | s->ext.ocsp.resp = NULL; | |
600 | s->ext.ocsp.resp_len = 0; | |
601 | SSL_CTX_up_ref(ctx); | |
602 | s->initial_ctx = ctx; | |
603 | #ifndef OPENSSL_NO_EC | |
604 | if (ctx->ext.ecpointformats) { | |
605 | s->ext.ecpointformats = | |
606 | OPENSSL_memdup(ctx->ext.ecpointformats, | |
607 | ctx->ext.ecpointformats_len); | |
608 | if (!s->ext.ecpointformats) | |
609 | goto err; | |
610 | s->ext.ecpointformats_len = | |
611 | ctx->ext.ecpointformats_len; | |
612 | } | |
613 | if (ctx->ext.supportedgroups) { | |
614 | s->ext.supportedgroups = | |
615 | OPENSSL_memdup(ctx->ext.supportedgroups, | |
616 | ctx->ext.supportedgroups_len); | |
617 | if (!s->ext.supportedgroups) | |
618 | goto err; | |
619 | s->ext.supportedgroups_len = ctx->ext.supportedgroups_len; | |
620 | } | |
621 | #endif | |
622 | #ifndef OPENSSL_NO_NEXTPROTONEG | |
623 | s->ext.npn = NULL; | |
624 | #endif | |
625 | ||
626 | if (s->ctx->ext.alpn) { | |
627 | s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len); | |
628 | if (s->ext.alpn == NULL) | |
629 | goto err; | |
630 | memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len); | |
631 | s->ext.alpn_len = s->ctx->ext.alpn_len; | |
632 | } | |
633 | ||
634 | s->verified_chain = NULL; | |
635 | s->verify_result = X509_V_OK; | |
636 | ||
637 | s->default_passwd_callback = ctx->default_passwd_callback; | |
638 | s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata; | |
639 | ||
640 | s->method = ctx->method; | |
641 | ||
642 | if (!s->method->ssl_new(s)) | |
643 | goto err; | |
644 | ||
645 | s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1; | |
646 | ||
647 | if (!SSL_clear(s)) | |
648 | goto err; | |
649 | ||
650 | if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data)) | |
651 | goto err; | |
652 | ||
653 | #ifndef OPENSSL_NO_PSK | |
654 | s->psk_client_callback = ctx->psk_client_callback; | |
655 | s->psk_server_callback = ctx->psk_server_callback; | |
656 | #endif | |
657 | ||
658 | s->job = NULL; | |
659 | ||
660 | #ifndef OPENSSL_NO_CT | |
661 | if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback, | |
662 | ctx->ct_validation_callback_arg)) | |
663 | goto err; | |
664 | #endif | |
665 | ||
666 | return s; | |
667 | err: | |
668 | SSL_free(s); | |
669 | SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE); | |
670 | return NULL; | |
671 | } | |
672 | ||
673 | int SSL_is_dtls(const SSL *s) | |
674 | { | |
675 | return SSL_IS_DTLS(s) ? 1 : 0; | |
676 | } | |
677 | ||
678 | int SSL_up_ref(SSL *s) | |
679 | { | |
680 | int i; | |
681 | ||
682 | if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0) | |
683 | return 0; | |
684 | ||
685 | REF_PRINT_COUNT("SSL", s); | |
686 | REF_ASSERT_ISNT(i < 2); | |
687 | return ((i > 1) ? 1 : 0); | |
688 | } | |
689 | ||
690 | int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, | |
691 | unsigned int sid_ctx_len) | |
692 | { | |
693 | if (sid_ctx_len > sizeof ctx->sid_ctx) { | |
694 | SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT, | |
695 | SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); | |
696 | return 0; | |
697 | } | |
698 | ctx->sid_ctx_length = sid_ctx_len; | |
699 | memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); | |
700 | ||
701 | return 1; | |
702 | } | |
703 | ||
704 | int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, | |
705 | unsigned int sid_ctx_len) | |
706 | { | |
707 | if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { | |
708 | SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, | |
709 | SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); | |
710 | return 0; | |
711 | } | |
712 | ssl->sid_ctx_length = sid_ctx_len; | |
713 | memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); | |
714 | ||
715 | return 1; | |
716 | } | |
717 | ||
718 | int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) | |
719 | { | |
720 | CRYPTO_THREAD_write_lock(ctx->lock); | |
721 | ctx->generate_session_id = cb; | |
722 | CRYPTO_THREAD_unlock(ctx->lock); | |
723 | return 1; | |
724 | } | |
725 | ||
726 | int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) | |
727 | { | |
728 | CRYPTO_THREAD_write_lock(ssl->lock); | |
729 | ssl->generate_session_id = cb; | |
730 | CRYPTO_THREAD_unlock(ssl->lock); | |
731 | return 1; | |
732 | } | |
733 | ||
734 | int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, | |
735 | unsigned int id_len) | |
736 | { | |
737 | /* | |
738 | * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how | |
739 | * we can "construct" a session to give us the desired check - ie. to | |
740 | * find if there's a session in the hash table that would conflict with | |
741 | * any new session built out of this id/id_len and the ssl_version in use | |
742 | * by this SSL. | |
743 | */ | |
744 | SSL_SESSION r, *p; | |
745 | ||
746 | if (id_len > sizeof r.session_id) | |
747 | return 0; | |
748 | ||
749 | r.ssl_version = ssl->version; | |
750 | r.session_id_length = id_len; | |
751 | memcpy(r.session_id, id, id_len); | |
752 | ||
753 | CRYPTO_THREAD_read_lock(ssl->session_ctx->lock); | |
754 | p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r); | |
755 | CRYPTO_THREAD_unlock(ssl->session_ctx->lock); | |
756 | return (p != NULL); | |
757 | } | |
758 | ||
759 | int SSL_CTX_set_purpose(SSL_CTX *s, int purpose) | |
760 | { | |
761 | return X509_VERIFY_PARAM_set_purpose(s->param, purpose); | |
762 | } | |
763 | ||
764 | int SSL_set_purpose(SSL *s, int purpose) | |
765 | { | |
766 | return X509_VERIFY_PARAM_set_purpose(s->param, purpose); | |
767 | } | |
768 | ||
769 | int SSL_CTX_set_trust(SSL_CTX *s, int trust) | |
770 | { | |
771 | return X509_VERIFY_PARAM_set_trust(s->param, trust); | |
772 | } | |
773 | ||
774 | int SSL_set_trust(SSL *s, int trust) | |
775 | { | |
776 | return X509_VERIFY_PARAM_set_trust(s->param, trust); | |
777 | } | |
778 | ||
779 | int SSL_set1_host(SSL *s, const char *hostname) | |
780 | { | |
781 | return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0); | |
782 | } | |
783 | ||
784 | int SSL_add1_host(SSL *s, const char *hostname) | |
785 | { | |
786 | return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0); | |
787 | } | |
788 | ||
789 | void SSL_set_hostflags(SSL *s, unsigned int flags) | |
790 | { | |
791 | X509_VERIFY_PARAM_set_hostflags(s->param, flags); | |
792 | } | |
793 | ||
794 | const char *SSL_get0_peername(SSL *s) | |
795 | { | |
796 | return X509_VERIFY_PARAM_get0_peername(s->param); | |
797 | } | |
798 | ||
799 | int SSL_CTX_dane_enable(SSL_CTX *ctx) | |
800 | { | |
801 | return dane_ctx_enable(&ctx->dane); | |
802 | } | |
803 | ||
804 | unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags) | |
805 | { | |
806 | unsigned long orig = ctx->dane.flags; | |
807 | ||
808 | ctx->dane.flags |= flags; | |
809 | return orig; | |
810 | } | |
811 | ||
812 | unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags) | |
813 | { | |
814 | unsigned long orig = ctx->dane.flags; | |
815 | ||
816 | ctx->dane.flags &= ~flags; | |
817 | return orig; | |
818 | } | |
819 | ||
820 | int SSL_dane_enable(SSL *s, const char *basedomain) | |
821 | { | |
822 | SSL_DANE *dane = &s->dane; | |
823 | ||
824 | if (s->ctx->dane.mdmax == 0) { | |
825 | SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED); | |
826 | return 0; | |
827 | } | |
828 | if (dane->trecs != NULL) { | |
829 | SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED); | |
830 | return 0; | |
831 | } | |
832 | ||
833 | /* | |
834 | * Default SNI name. This rejects empty names, while set1_host below | |
835 | * accepts them and disables host name checks. To avoid side-effects with | |
836 | * invalid input, set the SNI name first. | |
837 | */ | |
838 | if (s->ext.hostname == NULL) { | |
839 | if (!SSL_set_tlsext_host_name(s, basedomain)) { | |
840 | SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN); | |
841 | return -1; | |
842 | } | |
843 | } | |
844 | ||
845 | /* Primary RFC6125 reference identifier */ | |
846 | if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) { | |
847 | SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN); | |
848 | return -1; | |
849 | } | |
850 | ||
851 | dane->mdpth = -1; | |
852 | dane->pdpth = -1; | |
853 | dane->dctx = &s->ctx->dane; | |
854 | dane->trecs = sk_danetls_record_new_null(); | |
855 | ||
856 | if (dane->trecs == NULL) { | |
857 | SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE); | |
858 | return -1; | |
859 | } | |
860 | return 1; | |
861 | } | |
862 | ||
863 | unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags) | |
864 | { | |
865 | unsigned long orig = ssl->dane.flags; | |
866 | ||
867 | ssl->dane.flags |= flags; | |
868 | return orig; | |
869 | } | |
870 | ||
871 | unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags) | |
872 | { | |
873 | unsigned long orig = ssl->dane.flags; | |
874 | ||
875 | ssl->dane.flags &= ~flags; | |
876 | return orig; | |
877 | } | |
878 | ||
879 | int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki) | |
880 | { | |
881 | SSL_DANE *dane = &s->dane; | |
882 | ||
883 | if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK) | |
884 | return -1; | |
885 | if (dane->mtlsa) { | |
886 | if (mcert) | |
887 | *mcert = dane->mcert; | |
888 | if (mspki) | |
889 | *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL; | |
890 | } | |
891 | return dane->mdpth; | |
892 | } | |
893 | ||
894 | int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector, | |
895 | uint8_t *mtype, unsigned const char **data, size_t *dlen) | |
896 | { | |
897 | SSL_DANE *dane = &s->dane; | |
898 | ||
899 | if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK) | |
900 | return -1; | |
901 | if (dane->mtlsa) { | |
902 | if (usage) | |
903 | *usage = dane->mtlsa->usage; | |
904 | if (selector) | |
905 | *selector = dane->mtlsa->selector; | |
906 | if (mtype) | |
907 | *mtype = dane->mtlsa->mtype; | |
908 | if (data) | |
909 | *data = dane->mtlsa->data; | |
910 | if (dlen) | |
911 | *dlen = dane->mtlsa->dlen; | |
912 | } | |
913 | return dane->mdpth; | |
914 | } | |
915 | ||
916 | SSL_DANE *SSL_get0_dane(SSL *s) | |
917 | { | |
918 | return &s->dane; | |
919 | } | |
920 | ||
921 | int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector, | |
922 | uint8_t mtype, unsigned char *data, size_t dlen) | |
923 | { | |
924 | return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen); | |
925 | } | |
926 | ||
927 | int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype, | |
928 | uint8_t ord) | |
929 | { | |
930 | return dane_mtype_set(&ctx->dane, md, mtype, ord); | |
931 | } | |
932 | ||
933 | int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) | |
934 | { | |
935 | return X509_VERIFY_PARAM_set1(ctx->param, vpm); | |
936 | } | |
937 | ||
938 | int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) | |
939 | { | |
940 | return X509_VERIFY_PARAM_set1(ssl->param, vpm); | |
941 | } | |
942 | ||
943 | X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx) | |
944 | { | |
945 | return ctx->param; | |
946 | } | |
947 | ||
948 | X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl) | |
949 | { | |
950 | return ssl->param; | |
951 | } | |
952 | ||
953 | void SSL_certs_clear(SSL *s) | |
954 | { | |
955 | ssl_cert_clear_certs(s->cert); | |
956 | } | |
957 | ||
958 | void SSL_free(SSL *s) | |
959 | { | |
960 | int i; | |
961 | ||
962 | if (s == NULL) | |
963 | return; | |
964 | ||
965 | CRYPTO_DOWN_REF(&s->references, &i, s->lock); | |
966 | REF_PRINT_COUNT("SSL", s); | |
967 | if (i > 0) | |
968 | return; | |
969 | REF_ASSERT_ISNT(i < 0); | |
970 | ||
971 | X509_VERIFY_PARAM_free(s->param); | |
972 | dane_final(&s->dane); | |
973 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); | |
974 | ||
975 | ssl_free_wbio_buffer(s); | |
976 | ||
977 | BIO_free_all(s->wbio); | |
978 | BIO_free_all(s->rbio); | |
979 | ||
980 | BUF_MEM_free(s->init_buf); | |
981 | ||
982 | /* add extra stuff */ | |
983 | sk_SSL_CIPHER_free(s->cipher_list); | |
984 | sk_SSL_CIPHER_free(s->cipher_list_by_id); | |
985 | ||
986 | /* Make the next call work :-) */ | |
987 | if (s->session != NULL) { | |
988 | ssl_clear_bad_session(s); | |
989 | SSL_SESSION_free(s->session); | |
990 | } | |
991 | ||
992 | clear_ciphers(s); | |
993 | ||
994 | ssl_cert_free(s->cert); | |
995 | /* Free up if allocated */ | |
996 | ||
997 | OPENSSL_free(s->ext.hostname); | |
998 | SSL_CTX_free(s->initial_ctx); | |
999 | #ifndef OPENSSL_NO_EC | |
1000 | OPENSSL_free(s->ext.ecpointformats); | |
1001 | OPENSSL_free(s->ext.supportedgroups); | |
1002 | #endif /* OPENSSL_NO_EC */ | |
1003 | sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free); | |
1004 | #ifndef OPENSSL_NO_OCSP | |
1005 | sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free); | |
1006 | #endif | |
1007 | #ifndef OPENSSL_NO_CT | |
1008 | SCT_LIST_free(s->scts); | |
1009 | OPENSSL_free(s->ext.scts); | |
1010 | #endif | |
1011 | OPENSSL_free(s->ext.ocsp.resp); | |
1012 | OPENSSL_free(s->ext.alpn); | |
1013 | ||
1014 | sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); | |
1015 | ||
1016 | sk_X509_pop_free(s->verified_chain, X509_free); | |
1017 | ||
1018 | if (s->method != NULL) | |
1019 | s->method->ssl_free(s); | |
1020 | ||
1021 | RECORD_LAYER_release(&s->rlayer); | |
1022 | ||
1023 | SSL_CTX_free(s->ctx); | |
1024 | ||
1025 | ASYNC_WAIT_CTX_free(s->waitctx); | |
1026 | ||
1027 | #if !defined(OPENSSL_NO_NEXTPROTONEG) | |
1028 | OPENSSL_free(s->ext.npn); | |
1029 | #endif | |
1030 | ||
1031 | #ifndef OPENSSL_NO_SRTP | |
1032 | sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); | |
1033 | #endif | |
1034 | ||
1035 | CRYPTO_THREAD_lock_free(s->lock); | |
1036 | ||
1037 | OPENSSL_free(s); | |
1038 | } | |
1039 | ||
1040 | void SSL_set0_rbio(SSL *s, BIO *rbio) | |
1041 | { | |
1042 | BIO_free_all(s->rbio); | |
1043 | s->rbio = rbio; | |
1044 | } | |
1045 | ||
1046 | void SSL_set0_wbio(SSL *s, BIO *wbio) | |
1047 | { | |
1048 | /* | |
1049 | * If the output buffering BIO is still in place, remove it | |
1050 | */ | |
1051 | if (s->bbio != NULL) | |
1052 | s->wbio = BIO_pop(s->wbio); | |
1053 | ||
1054 | BIO_free_all(s->wbio); | |
1055 | s->wbio = wbio; | |
1056 | ||
1057 | /* Re-attach |bbio| to the new |wbio|. */ | |
1058 | if (s->bbio != NULL) | |
1059 | s->wbio = BIO_push(s->bbio, s->wbio); | |
1060 | } | |
1061 | ||
1062 | void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) | |
1063 | { | |
1064 | /* | |
1065 | * For historical reasons, this function has many different cases in | |
1066 | * ownership handling. | |
1067 | */ | |
1068 | ||
1069 | /* If nothing has changed, do nothing */ | |
1070 | if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s)) | |
1071 | return; | |
1072 | ||
1073 | /* | |
1074 | * If the two arguments are equal then one fewer reference is granted by the | |
1075 | * caller than we want to take | |
1076 | */ | |
1077 | if (rbio != NULL && rbio == wbio) | |
1078 | BIO_up_ref(rbio); | |
1079 | ||
1080 | /* | |
1081 | * If only the wbio is changed only adopt one reference. | |
1082 | */ | |
1083 | if (rbio == SSL_get_rbio(s)) { | |
1084 | SSL_set0_wbio(s, wbio); | |
1085 | return; | |
1086 | } | |
1087 | /* | |
1088 | * There is an asymmetry here for historical reasons. If only the rbio is | |
1089 | * changed AND the rbio and wbio were originally different, then we only | |
1090 | * adopt one reference. | |
1091 | */ | |
1092 | if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) { | |
1093 | SSL_set0_rbio(s, rbio); | |
1094 | return; | |
1095 | } | |
1096 | ||
1097 | /* Otherwise, adopt both references. */ | |
1098 | SSL_set0_rbio(s, rbio); | |
1099 | SSL_set0_wbio(s, wbio); | |
1100 | } | |
1101 | ||
1102 | BIO *SSL_get_rbio(const SSL *s) | |
1103 | { | |
1104 | return s->rbio; | |
1105 | } | |
1106 | ||
1107 | BIO *SSL_get_wbio(const SSL *s) | |
1108 | { | |
1109 | if (s->bbio != NULL) { | |
1110 | /* | |
1111 | * If |bbio| is active, the true caller-configured BIO is its | |
1112 | * |next_bio|. | |
1113 | */ | |
1114 | return BIO_next(s->bbio); | |
1115 | } | |
1116 | return s->wbio; | |
1117 | } | |
1118 | ||
1119 | int SSL_get_fd(const SSL *s) | |
1120 | { | |
1121 | return SSL_get_rfd(s); | |
1122 | } | |
1123 | ||
1124 | int SSL_get_rfd(const SSL *s) | |
1125 | { | |
1126 | int ret = -1; | |
1127 | BIO *b, *r; | |
1128 | ||
1129 | b = SSL_get_rbio(s); | |
1130 | r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); | |
1131 | if (r != NULL) | |
1132 | BIO_get_fd(r, &ret); | |
1133 | return (ret); | |
1134 | } | |
1135 | ||
1136 | int SSL_get_wfd(const SSL *s) | |
1137 | { | |
1138 | int ret = -1; | |
1139 | BIO *b, *r; | |
1140 | ||
1141 | b = SSL_get_wbio(s); | |
1142 | r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); | |
1143 | if (r != NULL) | |
1144 | BIO_get_fd(r, &ret); | |
1145 | return (ret); | |
1146 | } | |
1147 | ||
1148 | #ifndef OPENSSL_NO_SOCK | |
1149 | int SSL_set_fd(SSL *s, int fd) | |
1150 | { | |
1151 | int ret = 0; | |
1152 | BIO *bio = NULL; | |
1153 | ||
1154 | bio = BIO_new(BIO_s_socket()); | |
1155 | ||
1156 | if (bio == NULL) { | |
1157 | SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB); | |
1158 | goto err; | |
1159 | } | |
1160 | BIO_set_fd(bio, fd, BIO_NOCLOSE); | |
1161 | SSL_set_bio(s, bio, bio); | |
1162 | ret = 1; | |
1163 | err: | |
1164 | return (ret); | |
1165 | } | |
1166 | ||
1167 | int SSL_set_wfd(SSL *s, int fd) | |
1168 | { | |
1169 | BIO *rbio = SSL_get_rbio(s); | |
1170 | ||
1171 | if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET | |
1172 | || (int)BIO_get_fd(rbio, NULL) != fd) { | |
1173 | BIO *bio = BIO_new(BIO_s_socket()); | |
1174 | ||
1175 | if (bio == NULL) { | |
1176 | SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB); | |
1177 | return 0; | |
1178 | } | |
1179 | BIO_set_fd(bio, fd, BIO_NOCLOSE); | |
1180 | SSL_set0_wbio(s, bio); | |
1181 | } else { | |
1182 | BIO_up_ref(rbio); | |
1183 | SSL_set0_wbio(s, rbio); | |
1184 | } | |
1185 | return 1; | |
1186 | } | |
1187 | ||
1188 | int SSL_set_rfd(SSL *s, int fd) | |
1189 | { | |
1190 | BIO *wbio = SSL_get_wbio(s); | |
1191 | ||
1192 | if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET | |
1193 | || ((int)BIO_get_fd(wbio, NULL) != fd)) { | |
1194 | BIO *bio = BIO_new(BIO_s_socket()); | |
1195 | ||
1196 | if (bio == NULL) { | |
1197 | SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB); | |
1198 | return 0; | |
1199 | } | |
1200 | BIO_set_fd(bio, fd, BIO_NOCLOSE); | |
1201 | SSL_set0_rbio(s, bio); | |
1202 | } else { | |
1203 | BIO_up_ref(wbio); | |
1204 | SSL_set0_rbio(s, wbio); | |
1205 | } | |
1206 | ||
1207 | return 1; | |
1208 | } | |
1209 | #endif | |
1210 | ||
1211 | /* return length of latest Finished message we sent, copy to 'buf' */ | |
1212 | size_t SSL_get_finished(const SSL *s, void *buf, size_t count) | |
1213 | { | |
1214 | size_t ret = 0; | |
1215 | ||
1216 | if (s->s3 != NULL) { | |
1217 | ret = s->s3->tmp.finish_md_len; | |
1218 | if (count > ret) | |
1219 | count = ret; | |
1220 | memcpy(buf, s->s3->tmp.finish_md, count); | |
1221 | } | |
1222 | return ret; | |
1223 | } | |
1224 | ||
1225 | /* return length of latest Finished message we expected, copy to 'buf' */ | |
1226 | size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count) | |
1227 | { | |
1228 | size_t ret = 0; | |
1229 | ||
1230 | if (s->s3 != NULL) { | |
1231 | ret = s->s3->tmp.peer_finish_md_len; | |
1232 | if (count > ret) | |
1233 | count = ret; | |
1234 | memcpy(buf, s->s3->tmp.peer_finish_md, count); | |
1235 | } | |
1236 | return ret; | |
1237 | } | |
1238 | ||
1239 | int SSL_get_verify_mode(const SSL *s) | |
1240 | { | |
1241 | return (s->verify_mode); | |
1242 | } | |
1243 | ||
1244 | int SSL_get_verify_depth(const SSL *s) | |
1245 | { | |
1246 | return X509_VERIFY_PARAM_get_depth(s->param); | |
1247 | } | |
1248 | ||
1249 | int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) { | |
1250 | return (s->verify_callback); | |
1251 | } | |
1252 | ||
1253 | int SSL_CTX_get_verify_mode(const SSL_CTX *ctx) | |
1254 | { | |
1255 | return (ctx->verify_mode); | |
1256 | } | |
1257 | ||
1258 | int SSL_CTX_get_verify_depth(const SSL_CTX *ctx) | |
1259 | { | |
1260 | return X509_VERIFY_PARAM_get_depth(ctx->param); | |
1261 | } | |
1262 | ||
1263 | int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) { | |
1264 | return (ctx->default_verify_callback); | |
1265 | } | |
1266 | ||
1267 | void SSL_set_verify(SSL *s, int mode, | |
1268 | int (*callback) (int ok, X509_STORE_CTX *ctx)) | |
1269 | { | |
1270 | s->verify_mode = mode; | |
1271 | if (callback != NULL) | |
1272 | s->verify_callback = callback; | |
1273 | } | |
1274 | ||
1275 | void SSL_set_verify_depth(SSL *s, int depth) | |
1276 | { | |
1277 | X509_VERIFY_PARAM_set_depth(s->param, depth); | |
1278 | } | |
1279 | ||
1280 | void SSL_set_read_ahead(SSL *s, int yes) | |
1281 | { | |
1282 | RECORD_LAYER_set_read_ahead(&s->rlayer, yes); | |
1283 | } | |
1284 | ||
1285 | int SSL_get_read_ahead(const SSL *s) | |
1286 | { | |
1287 | return RECORD_LAYER_get_read_ahead(&s->rlayer); | |
1288 | } | |
1289 | ||
1290 | int SSL_pending(const SSL *s) | |
1291 | { | |
1292 | size_t pending = s->method->ssl_pending(s); | |
1293 | ||
1294 | /* | |
1295 | * SSL_pending cannot work properly if read-ahead is enabled | |
1296 | * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is | |
1297 | * impossible to fix since SSL_pending cannot report errors that may be | |
1298 | * observed while scanning the new data. (Note that SSL_pending() is | |
1299 | * often used as a boolean value, so we'd better not return -1.) | |
1300 | * | |
1301 | * SSL_pending also cannot work properly if the value >INT_MAX. In that case | |
1302 | * we just return INT_MAX. | |
1303 | */ | |
1304 | return pending < INT_MAX ? (int)pending : INT_MAX; | |
1305 | } | |
1306 | ||
1307 | int SSL_has_pending(const SSL *s) | |
1308 | { | |
1309 | /* | |
1310 | * Similar to SSL_pending() but returns a 1 to indicate that we have | |
1311 | * unprocessed data available or 0 otherwise (as opposed to the number of | |
1312 | * bytes available). Unlike SSL_pending() this will take into account | |
1313 | * read_ahead data. A 1 return simply indicates that we have unprocessed | |
1314 | * data. That data may not result in any application data, or we may fail | |
1315 | * to parse the records for some reason. | |
1316 | */ | |
1317 | if (SSL_pending(s)) | |
1318 | return 1; | |
1319 | ||
1320 | return RECORD_LAYER_read_pending(&s->rlayer); | |
1321 | } | |
1322 | ||
1323 | X509 *SSL_get_peer_certificate(const SSL *s) | |
1324 | { | |
1325 | X509 *r; | |
1326 | ||
1327 | if ((s == NULL) || (s->session == NULL)) | |
1328 | r = NULL; | |
1329 | else | |
1330 | r = s->session->peer; | |
1331 | ||
1332 | if (r == NULL) | |
1333 | return (r); | |
1334 | ||
1335 | X509_up_ref(r); | |
1336 | ||
1337 | return (r); | |
1338 | } | |
1339 | ||
1340 | STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s) | |
1341 | { | |
1342 | STACK_OF(X509) *r; | |
1343 | ||
1344 | if ((s == NULL) || (s->session == NULL)) | |
1345 | r = NULL; | |
1346 | else | |
1347 | r = s->session->peer_chain; | |
1348 | ||
1349 | /* | |
1350 | * If we are a client, cert_chain includes the peer's own certificate; if | |
1351 | * we are a server, it does not. | |
1352 | */ | |
1353 | ||
1354 | return (r); | |
1355 | } | |
1356 | ||
1357 | /* | |
1358 | * Now in theory, since the calling process own 't' it should be safe to | |
1359 | * modify. We need to be able to read f without being hassled | |
1360 | */ | |
1361 | int SSL_copy_session_id(SSL *t, const SSL *f) | |
1362 | { | |
1363 | int i; | |
1364 | /* Do we need to to SSL locking? */ | |
1365 | if (!SSL_set_session(t, SSL_get_session(f))) { | |
1366 | return 0; | |
1367 | } | |
1368 | ||
1369 | /* | |
1370 | * what if we are setup for one protocol version but want to talk another | |
1371 | */ | |
1372 | if (t->method != f->method) { | |
1373 | t->method->ssl_free(t); | |
1374 | t->method = f->method; | |
1375 | if (t->method->ssl_new(t) == 0) | |
1376 | return 0; | |
1377 | } | |
1378 | ||
1379 | CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock); | |
1380 | ssl_cert_free(t->cert); | |
1381 | t->cert = f->cert; | |
1382 | if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) { | |
1383 | return 0; | |
1384 | } | |
1385 | ||
1386 | return 1; | |
1387 | } | |
1388 | ||
1389 | /* Fix this so it checks all the valid key/cert options */ | |
1390 | int SSL_CTX_check_private_key(const SSL_CTX *ctx) | |
1391 | { | |
1392 | if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) { | |
1393 | SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED); | |
1394 | return (0); | |
1395 | } | |
1396 | if (ctx->cert->key->privatekey == NULL) { | |
1397 | SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED); | |
1398 | return (0); | |
1399 | } | |
1400 | return (X509_check_private_key | |
1401 | (ctx->cert->key->x509, ctx->cert->key->privatekey)); | |
1402 | } | |
1403 | ||
1404 | /* Fix this function so that it takes an optional type parameter */ | |
1405 | int SSL_check_private_key(const SSL *ssl) | |
1406 | { | |
1407 | if (ssl == NULL) { | |
1408 | SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER); | |
1409 | return (0); | |
1410 | } | |
1411 | if (ssl->cert->key->x509 == NULL) { | |
1412 | SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED); | |
1413 | return (0); | |
1414 | } | |
1415 | if (ssl->cert->key->privatekey == NULL) { | |
1416 | SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED); | |
1417 | return (0); | |
1418 | } | |
1419 | return (X509_check_private_key(ssl->cert->key->x509, | |
1420 | ssl->cert->key->privatekey)); | |
1421 | } | |
1422 | ||
1423 | int SSL_waiting_for_async(SSL *s) | |
1424 | { | |
1425 | if (s->job) | |
1426 | return 1; | |
1427 | ||
1428 | return 0; | |
1429 | } | |
1430 | ||
1431 | int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds) | |
1432 | { | |
1433 | ASYNC_WAIT_CTX *ctx = s->waitctx; | |
1434 | ||
1435 | if (ctx == NULL) | |
1436 | return 0; | |
1437 | return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds); | |
1438 | } | |
1439 | ||
1440 | int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds, | |
1441 | OSSL_ASYNC_FD *delfd, size_t *numdelfds) | |
1442 | { | |
1443 | ASYNC_WAIT_CTX *ctx = s->waitctx; | |
1444 | ||
1445 | if (ctx == NULL) | |
1446 | return 0; | |
1447 | return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd, | |
1448 | numdelfds); | |
1449 | } | |
1450 | ||
1451 | int SSL_accept(SSL *s) | |
1452 | { | |
1453 | if (s->handshake_func == NULL) { | |
1454 | /* Not properly initialized yet */ | |
1455 | SSL_set_accept_state(s); | |
1456 | } | |
1457 | ||
1458 | return SSL_do_handshake(s); | |
1459 | } | |
1460 | ||
1461 | int SSL_connect(SSL *s) | |
1462 | { | |
1463 | if (s->handshake_func == NULL) { | |
1464 | /* Not properly initialized yet */ | |
1465 | SSL_set_connect_state(s); | |
1466 | } | |
1467 | ||
1468 | return SSL_do_handshake(s); | |
1469 | } | |
1470 | ||
1471 | long SSL_get_default_timeout(const SSL *s) | |
1472 | { | |
1473 | return (s->method->get_timeout()); | |
1474 | } | |
1475 | ||
1476 | static int ssl_start_async_job(SSL *s, struct ssl_async_args *args, | |
1477 | int (*func) (void *)) | |
1478 | { | |
1479 | int ret; | |
1480 | if (s->waitctx == NULL) { | |
1481 | s->waitctx = ASYNC_WAIT_CTX_new(); | |
1482 | if (s->waitctx == NULL) | |
1483 | return -1; | |
1484 | } | |
1485 | switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args, | |
1486 | sizeof(struct ssl_async_args))) { | |
1487 | case ASYNC_ERR: | |
1488 | s->rwstate = SSL_NOTHING; | |
1489 | SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC); | |
1490 | return -1; | |
1491 | case ASYNC_PAUSE: | |
1492 | s->rwstate = SSL_ASYNC_PAUSED; | |
1493 | return -1; | |
1494 | case ASYNC_NO_JOBS: | |
1495 | s->rwstate = SSL_ASYNC_NO_JOBS; | |
1496 | return -1; | |
1497 | case ASYNC_FINISH: | |
1498 | s->job = NULL; | |
1499 | return ret; | |
1500 | default: | |
1501 | s->rwstate = SSL_NOTHING; | |
1502 | SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR); | |
1503 | /* Shouldn't happen */ | |
1504 | return -1; | |
1505 | } | |
1506 | } | |
1507 | ||
1508 | static int ssl_io_intern(void *vargs) | |
1509 | { | |
1510 | struct ssl_async_args *args; | |
1511 | SSL *s; | |
1512 | void *buf; | |
1513 | size_t num; | |
1514 | ||
1515 | args = (struct ssl_async_args *)vargs; | |
1516 | s = args->s; | |
1517 | buf = args->buf; | |
1518 | num = args->num; | |
1519 | switch (args->type) { | |
1520 | case READFUNC: | |
1521 | return args->f.func_read(s, buf, num, &s->asyncrw); | |
1522 | case WRITEFUNC: | |
1523 | return args->f.func_write(s, buf, num, &s->asyncrw); | |
1524 | case OTHERFUNC: | |
1525 | return args->f.func_other(s); | |
1526 | } | |
1527 | return -1; | |
1528 | } | |
1529 | ||
1530 | int SSL_read(SSL *s, void *buf, int num) | |
1531 | { | |
1532 | int ret; | |
1533 | size_t readbytes; | |
1534 | ||
1535 | if (num < 0) { | |
1536 | SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH); | |
1537 | return -1; | |
1538 | } | |
1539 | ||
1540 | ret = SSL_read_ex(s, buf, (size_t)num, &readbytes); | |
1541 | ||
1542 | /* | |
1543 | * The cast is safe here because ret should be <= INT_MAX because num is | |
1544 | * <= INT_MAX | |
1545 | */ | |
1546 | if (ret > 0) | |
1547 | ret = (int)readbytes; | |
1548 | ||
1549 | return ret; | |
1550 | } | |
1551 | ||
1552 | int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes) | |
1553 | { | |
1554 | if (s->handshake_func == NULL) { | |
1555 | SSLerr(SSL_F_SSL_READ_EX, SSL_R_UNINITIALIZED); | |
1556 | return -1; | |
1557 | } | |
1558 | ||
1559 | if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { | |
1560 | s->rwstate = SSL_NOTHING; | |
1561 | return (0); | |
1562 | } | |
1563 | ||
1564 | if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) { | |
1565 | struct ssl_async_args args; | |
1566 | int ret; | |
1567 | ||
1568 | args.s = s; | |
1569 | args.buf = buf; | |
1570 | args.num = num; | |
1571 | args.type = READFUNC; | |
1572 | args.f.func_read = s->method->ssl_read; | |
1573 | ||
1574 | ret = ssl_start_async_job(s, &args, ssl_io_intern); | |
1575 | *readbytes = s->asyncrw; | |
1576 | return ret; | |
1577 | } else { | |
1578 | return s->method->ssl_read(s, buf, num, readbytes); | |
1579 | } | |
1580 | } | |
1581 | ||
1582 | int SSL_peek(SSL *s, void *buf, int num) | |
1583 | { | |
1584 | int ret; | |
1585 | size_t readbytes; | |
1586 | ||
1587 | if (num < 0) { | |
1588 | SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH); | |
1589 | return -1; | |
1590 | } | |
1591 | ||
1592 | ret = SSL_peek_ex(s, buf, (size_t)num, &readbytes); | |
1593 | ||
1594 | /* | |
1595 | * The cast is safe here because ret should be <= INT_MAX because num is | |
1596 | * <= INT_MAX | |
1597 | */ | |
1598 | if (ret > 0) | |
1599 | ret = (int)readbytes; | |
1600 | ||
1601 | return ret; | |
1602 | } | |
1603 | ||
1604 | int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes) | |
1605 | { | |
1606 | if (s->handshake_func == NULL) { | |
1607 | SSLerr(SSL_F_SSL_PEEK_EX, SSL_R_UNINITIALIZED); | |
1608 | return -1; | |
1609 | } | |
1610 | ||
1611 | if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { | |
1612 | return (0); | |
1613 | } | |
1614 | if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) { | |
1615 | struct ssl_async_args args; | |
1616 | int ret; | |
1617 | ||
1618 | args.s = s; | |
1619 | args.buf = buf; | |
1620 | args.num = num; | |
1621 | args.type = READFUNC; | |
1622 | args.f.func_read = s->method->ssl_peek; | |
1623 | ||
1624 | ret = ssl_start_async_job(s, &args, ssl_io_intern); | |
1625 | *readbytes = s->asyncrw; | |
1626 | return ret; | |
1627 | } else { | |
1628 | return s->method->ssl_peek(s, buf, num, readbytes); | |
1629 | } | |
1630 | } | |
1631 | ||
1632 | int SSL_write(SSL *s, const void *buf, int num) | |
1633 | { | |
1634 | int ret; | |
1635 | size_t written; | |
1636 | ||
1637 | if (num < 0) { | |
1638 | SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH); | |
1639 | return -1; | |
1640 | } | |
1641 | ||
1642 | ret = SSL_write_ex(s, buf, (size_t)num, &written); | |
1643 | ||
1644 | /* | |
1645 | * The cast is safe here because ret should be <= INT_MAX because num is | |
1646 | * <= INT_MAX | |
1647 | */ | |
1648 | if (ret > 0) | |
1649 | ret = (int)written; | |
1650 | ||
1651 | return ret; | |
1652 | } | |
1653 | ||
1654 | int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written) | |
1655 | { | |
1656 | if (s->handshake_func == NULL) { | |
1657 | SSLerr(SSL_F_SSL_WRITE_EX, SSL_R_UNINITIALIZED); | |
1658 | return -1; | |
1659 | } | |
1660 | ||
1661 | if (s->shutdown & SSL_SENT_SHUTDOWN) { | |
1662 | s->rwstate = SSL_NOTHING; | |
1663 | SSLerr(SSL_F_SSL_WRITE_EX, SSL_R_PROTOCOL_IS_SHUTDOWN); | |
1664 | return (-1); | |
1665 | } | |
1666 | ||
1667 | if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) { | |
1668 | int ret; | |
1669 | struct ssl_async_args args; | |
1670 | ||
1671 | args.s = s; | |
1672 | args.buf = (void *)buf; | |
1673 | args.num = num; | |
1674 | args.type = WRITEFUNC; | |
1675 | args.f.func_write = s->method->ssl_write; | |
1676 | ||
1677 | ret = ssl_start_async_job(s, &args, ssl_io_intern); | |
1678 | *written = s->asyncrw; | |
1679 | return ret; | |
1680 | } else { | |
1681 | return s->method->ssl_write(s, buf, num, written); | |
1682 | } | |
1683 | } | |
1684 | ||
1685 | int SSL_shutdown(SSL *s) | |
1686 | { | |
1687 | /* | |
1688 | * Note that this function behaves differently from what one might | |
1689 | * expect. Return values are 0 for no success (yet), 1 for success; but | |
1690 | * calling it once is usually not enough, even if blocking I/O is used | |
1691 | * (see ssl3_shutdown). | |
1692 | */ | |
1693 | ||
1694 | if (s->handshake_func == NULL) { | |
1695 | SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); | |
1696 | return -1; | |
1697 | } | |
1698 | ||
1699 | if (!SSL_in_init(s)) { | |
1700 | if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) { | |
1701 | struct ssl_async_args args; | |
1702 | ||
1703 | args.s = s; | |
1704 | args.type = OTHERFUNC; | |
1705 | args.f.func_other = s->method->ssl_shutdown; | |
1706 | ||
1707 | return ssl_start_async_job(s, &args, ssl_io_intern); | |
1708 | } else { | |
1709 | return s->method->ssl_shutdown(s); | |
1710 | } | |
1711 | } else { | |
1712 | SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT); | |
1713 | return -1; | |
1714 | } | |
1715 | } | |
1716 | ||
1717 | int SSL_renegotiate(SSL *s) | |
1718 | { | |
1719 | if (s->renegotiate == 0) | |
1720 | s->renegotiate = 1; | |
1721 | ||
1722 | s->new_session = 1; | |
1723 | ||
1724 | return (s->method->ssl_renegotiate(s)); | |
1725 | } | |
1726 | ||
1727 | int SSL_renegotiate_abbreviated(SSL *s) | |
1728 | { | |
1729 | if (s->renegotiate == 0) | |
1730 | s->renegotiate = 1; | |
1731 | ||
1732 | s->new_session = 0; | |
1733 | ||
1734 | return (s->method->ssl_renegotiate(s)); | |
1735 | } | |
1736 | ||
1737 | int SSL_renegotiate_pending(SSL *s) | |
1738 | { | |
1739 | /* | |
1740 | * becomes true when negotiation is requested; false again once a | |
1741 | * handshake has finished | |
1742 | */ | |
1743 | return (s->renegotiate != 0); | |
1744 | } | |
1745 | ||
1746 | long SSL_ctrl(SSL *s, int cmd, long larg, void *parg) | |
1747 | { | |
1748 | long l; | |
1749 | ||
1750 | switch (cmd) { | |
1751 | case SSL_CTRL_GET_READ_AHEAD: | |
1752 | return (RECORD_LAYER_get_read_ahead(&s->rlayer)); | |
1753 | case SSL_CTRL_SET_READ_AHEAD: | |
1754 | l = RECORD_LAYER_get_read_ahead(&s->rlayer); | |
1755 | RECORD_LAYER_set_read_ahead(&s->rlayer, larg); | |
1756 | return (l); | |
1757 | ||
1758 | case SSL_CTRL_SET_MSG_CALLBACK_ARG: | |
1759 | s->msg_callback_arg = parg; | |
1760 | return 1; | |
1761 | ||
1762 | case SSL_CTRL_MODE: | |
1763 | return (s->mode |= larg); | |
1764 | case SSL_CTRL_CLEAR_MODE: | |
1765 | return (s->mode &= ~larg); | |
1766 | case SSL_CTRL_GET_MAX_CERT_LIST: | |
1767 | return (long)(s->max_cert_list); | |
1768 | case SSL_CTRL_SET_MAX_CERT_LIST: | |
1769 | if (larg < 0) | |
1770 | return 0; | |
1771 | l = (long)s->max_cert_list; | |
1772 | s->max_cert_list = (size_t)larg; | |
1773 | return l; | |
1774 | case SSL_CTRL_SET_MAX_SEND_FRAGMENT: | |
1775 | if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) | |
1776 | return 0; | |
1777 | s->max_send_fragment = larg; | |
1778 | if (s->max_send_fragment < s->split_send_fragment) | |
1779 | s->split_send_fragment = s->max_send_fragment; | |
1780 | return 1; | |
1781 | case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT: | |
1782 | if ((size_t)larg > s->max_send_fragment || larg == 0) | |
1783 | return 0; | |
1784 | s->split_send_fragment = larg; | |
1785 | return 1; | |
1786 | case SSL_CTRL_SET_MAX_PIPELINES: | |
1787 | if (larg < 1 || larg > SSL_MAX_PIPELINES) | |
1788 | return 0; | |
1789 | s->max_pipelines = larg; | |
1790 | if (larg > 1) | |
1791 | RECORD_LAYER_set_read_ahead(&s->rlayer, 1); | |
1792 | return 1; | |
1793 | case SSL_CTRL_GET_RI_SUPPORT: | |
1794 | if (s->s3) | |
1795 | return s->s3->send_connection_binding; | |
1796 | else | |
1797 | return 0; | |
1798 | case SSL_CTRL_CERT_FLAGS: | |
1799 | return (s->cert->cert_flags |= larg); | |
1800 | case SSL_CTRL_CLEAR_CERT_FLAGS: | |
1801 | return (s->cert->cert_flags &= ~larg); | |
1802 | ||
1803 | case SSL_CTRL_GET_RAW_CIPHERLIST: | |
1804 | if (parg) { | |
1805 | if (s->s3->tmp.ciphers_raw == NULL) | |
1806 | return 0; | |
1807 | *(unsigned char **)parg = s->s3->tmp.ciphers_raw; | |
1808 | return (int)s->s3->tmp.ciphers_rawlen; | |
1809 | } else { | |
1810 | return TLS_CIPHER_LEN; | |
1811 | } | |
1812 | case SSL_CTRL_GET_EXTMS_SUPPORT: | |
1813 | if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s)) | |
1814 | return -1; | |
1815 | if (s->session->flags & SSL_SESS_FLAG_EXTMS) | |
1816 | return 1; | |
1817 | else | |
1818 | return 0; | |
1819 | case SSL_CTRL_SET_MIN_PROTO_VERSION: | |
1820 | return ssl_set_version_bound(s->ctx->method->version, (int)larg, | |
1821 | &s->min_proto_version); | |
1822 | case SSL_CTRL_SET_MAX_PROTO_VERSION: | |
1823 | return ssl_set_version_bound(s->ctx->method->version, (int)larg, | |
1824 | &s->max_proto_version); | |
1825 | default: | |
1826 | return (s->method->ssl_ctrl(s, cmd, larg, parg)); | |
1827 | } | |
1828 | } | |
1829 | ||
1830 | long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void)) | |
1831 | { | |
1832 | switch (cmd) { | |
1833 | case SSL_CTRL_SET_MSG_CALLBACK: | |
1834 | s->msg_callback = (void (*) | |
1835 | (int write_p, int version, int content_type, | |
1836 | const void *buf, size_t len, SSL *ssl, | |
1837 | void *arg))(fp); | |
1838 | return 1; | |
1839 | ||
1840 | default: | |
1841 | return (s->method->ssl_callback_ctrl(s, cmd, fp)); | |
1842 | } | |
1843 | } | |
1844 | ||
1845 | LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx) | |
1846 | { | |
1847 | return ctx->sessions; | |
1848 | } | |
1849 | ||
1850 | long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) | |
1851 | { | |
1852 | long l; | |
1853 | /* For some cases with ctx == NULL perform syntax checks */ | |
1854 | if (ctx == NULL) { | |
1855 | switch (cmd) { | |
1856 | #ifndef OPENSSL_NO_EC | |
1857 | case SSL_CTRL_SET_GROUPS_LIST: | |
1858 | return tls1_set_groups_list(NULL, NULL, parg); | |
1859 | #endif | |
1860 | case SSL_CTRL_SET_SIGALGS_LIST: | |
1861 | case SSL_CTRL_SET_CLIENT_SIGALGS_LIST: | |
1862 | return tls1_set_sigalgs_list(NULL, parg, 0); | |
1863 | default: | |
1864 | return 0; | |
1865 | } | |
1866 | } | |
1867 | ||
1868 | switch (cmd) { | |
1869 | case SSL_CTRL_GET_READ_AHEAD: | |
1870 | return (ctx->read_ahead); | |
1871 | case SSL_CTRL_SET_READ_AHEAD: | |
1872 | l = ctx->read_ahead; | |
1873 | ctx->read_ahead = larg; | |
1874 | return (l); | |
1875 | ||
1876 | case SSL_CTRL_SET_MSG_CALLBACK_ARG: | |
1877 | ctx->msg_callback_arg = parg; | |
1878 | return 1; | |
1879 | ||
1880 | case SSL_CTRL_GET_MAX_CERT_LIST: | |
1881 | return (long)(ctx->max_cert_list); | |
1882 | case SSL_CTRL_SET_MAX_CERT_LIST: | |
1883 | if (larg < 0) | |
1884 | return 0; | |
1885 | l = (long)ctx->max_cert_list; | |
1886 | ctx->max_cert_list = (size_t)larg; | |
1887 | return l; | |
1888 | ||
1889 | case SSL_CTRL_SET_SESS_CACHE_SIZE: | |
1890 | if (larg < 0) | |
1891 | return 0; | |
1892 | l = (long)ctx->session_cache_size; | |
1893 | ctx->session_cache_size = (size_t)larg; | |
1894 | return l; | |
1895 | case SSL_CTRL_GET_SESS_CACHE_SIZE: | |
1896 | return (long)(ctx->session_cache_size); | |
1897 | case SSL_CTRL_SET_SESS_CACHE_MODE: | |
1898 | l = ctx->session_cache_mode; | |
1899 | ctx->session_cache_mode = larg; | |
1900 | return (l); | |
1901 | case SSL_CTRL_GET_SESS_CACHE_MODE: | |
1902 | return (ctx->session_cache_mode); | |
1903 | ||
1904 | case SSL_CTRL_SESS_NUMBER: | |
1905 | return (lh_SSL_SESSION_num_items(ctx->sessions)); | |
1906 | case SSL_CTRL_SESS_CONNECT: | |
1907 | return (ctx->stats.sess_connect); | |
1908 | case SSL_CTRL_SESS_CONNECT_GOOD: | |
1909 | return (ctx->stats.sess_connect_good); | |
1910 | case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: | |
1911 | return (ctx->stats.sess_connect_renegotiate); | |
1912 | case SSL_CTRL_SESS_ACCEPT: | |
1913 | return (ctx->stats.sess_accept); | |
1914 | case SSL_CTRL_SESS_ACCEPT_GOOD: | |
1915 | return (ctx->stats.sess_accept_good); | |
1916 | case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: | |
1917 | return (ctx->stats.sess_accept_renegotiate); | |
1918 | case SSL_CTRL_SESS_HIT: | |
1919 | return (ctx->stats.sess_hit); | |
1920 | case SSL_CTRL_SESS_CB_HIT: | |
1921 | return (ctx->stats.sess_cb_hit); | |
1922 | case SSL_CTRL_SESS_MISSES: | |
1923 | return (ctx->stats.sess_miss); | |
1924 | case SSL_CTRL_SESS_TIMEOUTS: | |
1925 | return (ctx->stats.sess_timeout); | |
1926 | case SSL_CTRL_SESS_CACHE_FULL: | |
1927 | return (ctx->stats.sess_cache_full); | |
1928 | case SSL_CTRL_MODE: | |
1929 | return (ctx->mode |= larg); | |
1930 | case SSL_CTRL_CLEAR_MODE: | |
1931 | return (ctx->mode &= ~larg); | |
1932 | case SSL_CTRL_SET_MAX_SEND_FRAGMENT: | |
1933 | if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) | |
1934 | return 0; | |
1935 | ctx->max_send_fragment = larg; | |
1936 | if (ctx->max_send_fragment < ctx->split_send_fragment) | |
1937 | ctx->split_send_fragment = ctx->max_send_fragment; | |
1938 | return 1; | |
1939 | case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT: | |
1940 | if ((size_t)larg > ctx->max_send_fragment || larg == 0) | |
1941 | return 0; | |
1942 | ctx->split_send_fragment = larg; | |
1943 | return 1; | |
1944 | case SSL_CTRL_SET_MAX_PIPELINES: | |
1945 | if (larg < 1 || larg > SSL_MAX_PIPELINES) | |
1946 | return 0; | |
1947 | ctx->max_pipelines = larg; | |
1948 | return 1; | |
1949 | case SSL_CTRL_CERT_FLAGS: | |
1950 | return (ctx->cert->cert_flags |= larg); | |
1951 | case SSL_CTRL_CLEAR_CERT_FLAGS: | |
1952 | return (ctx->cert->cert_flags &= ~larg); | |
1953 | case SSL_CTRL_SET_MIN_PROTO_VERSION: | |
1954 | return ssl_set_version_bound(ctx->method->version, (int)larg, | |
1955 | &ctx->min_proto_version); | |
1956 | case SSL_CTRL_SET_MAX_PROTO_VERSION: | |
1957 | return ssl_set_version_bound(ctx->method->version, (int)larg, | |
1958 | &ctx->max_proto_version); | |
1959 | default: | |
1960 | return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); | |
1961 | } | |
1962 | } | |
1963 | ||
1964 | long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void)) | |
1965 | { | |
1966 | switch (cmd) { | |
1967 | case SSL_CTRL_SET_MSG_CALLBACK: | |
1968 | ctx->msg_callback = (void (*) | |
1969 | (int write_p, int version, int content_type, | |
1970 | const void *buf, size_t len, SSL *ssl, | |
1971 | void *arg))(fp); | |
1972 | return 1; | |
1973 | ||
1974 | default: | |
1975 | return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); | |
1976 | } | |
1977 | } | |
1978 | ||
1979 | int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) | |
1980 | { | |
1981 | if (a->id > b->id) | |
1982 | return 1; | |
1983 | if (a->id < b->id) | |
1984 | return -1; | |
1985 | return 0; | |
1986 | } | |
1987 | ||
1988 | int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap, | |
1989 | const SSL_CIPHER *const *bp) | |
1990 | { | |
1991 | if ((*ap)->id > (*bp)->id) | |
1992 | return 1; | |
1993 | if ((*ap)->id < (*bp)->id) | |
1994 | return -1; | |
1995 | return 0; | |
1996 | } | |
1997 | ||
1998 | /** return a STACK of the ciphers available for the SSL and in order of | |
1999 | * preference */ | |
2000 | STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s) | |
2001 | { | |
2002 | if (s != NULL) { | |
2003 | if (s->cipher_list != NULL) { | |
2004 | return (s->cipher_list); | |
2005 | } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { | |
2006 | return (s->ctx->cipher_list); | |
2007 | } | |
2008 | } | |
2009 | return (NULL); | |
2010 | } | |
2011 | ||
2012 | STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s) | |
2013 | { | |
2014 | if ((s == NULL) || (s->session == NULL) || !s->server) | |
2015 | return NULL; | |
2016 | return s->session->ciphers; | |
2017 | } | |
2018 | ||
2019 | STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s) | |
2020 | { | |
2021 | STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers; | |
2022 | int i; | |
2023 | ciphers = SSL_get_ciphers(s); | |
2024 | if (!ciphers) | |
2025 | return NULL; | |
2026 | ssl_set_client_disabled(s); | |
2027 | for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { | |
2028 | const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i); | |
2029 | if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) { | |
2030 | if (!sk) | |
2031 | sk = sk_SSL_CIPHER_new_null(); | |
2032 | if (!sk) | |
2033 | return NULL; | |
2034 | if (!sk_SSL_CIPHER_push(sk, c)) { | |
2035 | sk_SSL_CIPHER_free(sk); | |
2036 | return NULL; | |
2037 | } | |
2038 | } | |
2039 | } | |
2040 | return sk; | |
2041 | } | |
2042 | ||
2043 | /** return a STACK of the ciphers available for the SSL and in order of | |
2044 | * algorithm id */ | |
2045 | STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s) | |
2046 | { | |
2047 | if (s != NULL) { | |
2048 | if (s->cipher_list_by_id != NULL) { | |
2049 | return (s->cipher_list_by_id); | |
2050 | } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) { | |
2051 | return (s->ctx->cipher_list_by_id); | |
2052 | } | |
2053 | } | |
2054 | return (NULL); | |
2055 | } | |
2056 | ||
2057 | /** The old interface to get the same thing as SSL_get_ciphers() */ | |
2058 | const char *SSL_get_cipher_list(const SSL *s, int n) | |
2059 | { | |
2060 | const SSL_CIPHER *c; | |
2061 | STACK_OF(SSL_CIPHER) *sk; | |
2062 | ||
2063 | if (s == NULL) | |
2064 | return (NULL); | |
2065 | sk = SSL_get_ciphers(s); | |
2066 | if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) | |
2067 | return (NULL); | |
2068 | c = sk_SSL_CIPHER_value(sk, n); | |
2069 | if (c == NULL) | |
2070 | return (NULL); | |
2071 | return (c->name); | |
2072 | } | |
2073 | ||
2074 | /** return a STACK of the ciphers available for the SSL_CTX and in order of | |
2075 | * preference */ | |
2076 | STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx) | |
2077 | { | |
2078 | if (ctx != NULL) | |
2079 | return ctx->cipher_list; | |
2080 | return NULL; | |
2081 | } | |
2082 | ||
2083 | /** specify the ciphers to be used by default by the SSL_CTX */ | |
2084 | int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) | |
2085 | { | |
2086 | STACK_OF(SSL_CIPHER) *sk; | |
2087 | ||
2088 | sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, | |
2089 | &ctx->cipher_list_by_id, str, ctx->cert); | |
2090 | /* | |
2091 | * ssl_create_cipher_list may return an empty stack if it was unable to | |
2092 | * find a cipher matching the given rule string (for example if the rule | |
2093 | * string specifies a cipher which has been disabled). This is not an | |
2094 | * error as far as ssl_create_cipher_list is concerned, and hence | |
2095 | * ctx->cipher_list and ctx->cipher_list_by_id has been updated. | |
2096 | */ | |
2097 | if (sk == NULL) | |
2098 | return 0; | |
2099 | else if (sk_SSL_CIPHER_num(sk) == 0) { | |
2100 | SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); | |
2101 | return 0; | |
2102 | } | |
2103 | return 1; | |
2104 | } | |
2105 | ||
2106 | /** specify the ciphers to be used by the SSL */ | |
2107 | int SSL_set_cipher_list(SSL *s, const char *str) | |
2108 | { | |
2109 | STACK_OF(SSL_CIPHER) *sk; | |
2110 | ||
2111 | sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, | |
2112 | &s->cipher_list_by_id, str, s->cert); | |
2113 | /* see comment in SSL_CTX_set_cipher_list */ | |
2114 | if (sk == NULL) | |
2115 | return 0; | |
2116 | else if (sk_SSL_CIPHER_num(sk) == 0) { | |
2117 | SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); | |
2118 | return 0; | |
2119 | } | |
2120 | return 1; | |
2121 | } | |
2122 | ||
2123 | char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len) | |
2124 | { | |
2125 | char *p; | |
2126 | STACK_OF(SSL_CIPHER) *sk; | |
2127 | const SSL_CIPHER *c; | |
2128 | int i; | |
2129 | ||
2130 | if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2)) | |
2131 | return (NULL); | |
2132 | ||
2133 | p = buf; | |
2134 | sk = s->session->ciphers; | |
2135 | ||
2136 | if (sk_SSL_CIPHER_num(sk) == 0) | |
2137 | return NULL; | |
2138 | ||
2139 | for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { | |
2140 | int n; | |
2141 | ||
2142 | c = sk_SSL_CIPHER_value(sk, i); | |
2143 | n = strlen(c->name); | |
2144 | if (n + 1 > len) { | |
2145 | if (p != buf) | |
2146 | --p; | |
2147 | *p = '\0'; | |
2148 | return buf; | |
2149 | } | |
2150 | memcpy(p, c->name, n + 1); | |
2151 | p += n; | |
2152 | *(p++) = ':'; | |
2153 | len -= n + 1; | |
2154 | } | |
2155 | p[-1] = '\0'; | |
2156 | return (buf); | |
2157 | } | |
2158 | ||
2159 | /** return a servername extension value if provided in Client Hello, or NULL. | |
2160 | * So far, only host_name types are defined (RFC 3546). | |
2161 | */ | |
2162 | ||
2163 | const char *SSL_get_servername(const SSL *s, const int type) | |
2164 | { | |
2165 | if (type != TLSEXT_NAMETYPE_host_name) | |
2166 | return NULL; | |
2167 | ||
2168 | return s->session && !s->ext.hostname ? | |
2169 | s->session->ext.hostname : s->ext.hostname; | |
2170 | } | |
2171 | ||
2172 | int SSL_get_servername_type(const SSL *s) | |
2173 | { | |
2174 | if (s->session | |
2175 | && (!s->ext.hostname ? s->session-> | |
2176 | ext.hostname : s->ext.hostname)) | |
2177 | return TLSEXT_NAMETYPE_host_name; | |
2178 | return -1; | |
2179 | } | |
2180 | ||
2181 | /* | |
2182 | * SSL_select_next_proto implements the standard protocol selection. It is | |
2183 | * expected that this function is called from the callback set by | |
2184 | * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a | |
2185 | * vector of 8-bit, length prefixed byte strings. The length byte itself is | |
2186 | * not included in the length. A byte string of length 0 is invalid. No byte | |
2187 | * string may be truncated. The current, but experimental algorithm for | |
2188 | * selecting the protocol is: 1) If the server doesn't support NPN then this | |
2189 | * is indicated to the callback. In this case, the client application has to | |
2190 | * abort the connection or have a default application level protocol. 2) If | |
2191 | * the server supports NPN, but advertises an empty list then the client | |
2192 | * selects the first protocol in its list, but indicates via the API that this | |
2193 | * fallback case was enacted. 3) Otherwise, the client finds the first | |
2194 | * protocol in the server's list that it supports and selects this protocol. | |
2195 | * This is because it's assumed that the server has better information about | |
2196 | * which protocol a client should use. 4) If the client doesn't support any | |
2197 | * of the server's advertised protocols, then this is treated the same as | |
2198 | * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was | |
2199 | * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. | |
2200 | */ | |
2201 | int SSL_select_next_proto(unsigned char **out, unsigned char *outlen, | |
2202 | const unsigned char *server, | |
2203 | unsigned int server_len, | |
2204 | const unsigned char *client, unsigned int client_len) | |
2205 | { | |
2206 | unsigned int i, j; | |
2207 | const unsigned char *result; | |
2208 | int status = OPENSSL_NPN_UNSUPPORTED; | |
2209 | ||
2210 | /* | |
2211 | * For each protocol in server preference order, see if we support it. | |
2212 | */ | |
2213 | for (i = 0; i < server_len;) { | |
2214 | for (j = 0; j < client_len;) { | |
2215 | if (server[i] == client[j] && | |
2216 | memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) { | |
2217 | /* We found a match */ | |
2218 | result = &server[i]; | |
2219 | status = OPENSSL_NPN_NEGOTIATED; | |
2220 | goto found; | |
2221 | } | |
2222 | j += client[j]; | |
2223 | j++; | |
2224 | } | |
2225 | i += server[i]; | |
2226 | i++; | |
2227 | } | |
2228 | ||
2229 | /* There's no overlap between our protocols and the server's list. */ | |
2230 | result = client; | |
2231 | status = OPENSSL_NPN_NO_OVERLAP; | |
2232 | ||
2233 | found: | |
2234 | *out = (unsigned char *)result + 1; | |
2235 | *outlen = result[0]; | |
2236 | return status; | |
2237 | } | |
2238 | ||
2239 | #ifndef OPENSSL_NO_NEXTPROTONEG | |
2240 | /* | |
2241 | * SSL_get0_next_proto_negotiated sets *data and *len to point to the | |
2242 | * client's requested protocol for this connection and returns 0. If the | |
2243 | * client didn't request any protocol, then *data is set to NULL. Note that | |
2244 | * the client can request any protocol it chooses. The value returned from | |
2245 | * this function need not be a member of the list of supported protocols | |
2246 | * provided by the callback. | |
2247 | */ | |
2248 | void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, | |
2249 | unsigned *len) | |
2250 | { | |
2251 | *data = s->ext.npn; | |
2252 | if (!*data) { | |
2253 | *len = 0; | |
2254 | } else { | |
2255 | *len = (unsigned int)s->ext.npn_len; | |
2256 | } | |
2257 | } | |
2258 | ||
2259 | /* | |
2260 | * SSL_CTX_set_npn_advertised_cb sets a callback that is called when | |
2261 | * a TLS server needs a list of supported protocols for Next Protocol | |
2262 | * Negotiation. The returned list must be in wire format. The list is | |
2263 | * returned by setting |out| to point to it and |outlen| to its length. This | |
2264 | * memory will not be modified, but one should assume that the SSL* keeps a | |
2265 | * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it | |
2266 | * wishes to advertise. Otherwise, no such extension will be included in the | |
2267 | * ServerHello. | |
2268 | */ | |
2269 | void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx, | |
2270 | SSL_CTX_npn_advertised_cb_func cb, | |
2271 | void *arg) | |
2272 | { | |
2273 | ctx->ext.npn_advertised_cb = cb; | |
2274 | ctx->ext.npn_advertised_cb_arg = arg; | |
2275 | } | |
2276 | ||
2277 | /* | |
2278 | * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a | |
2279 | * client needs to select a protocol from the server's provided list. |out| | |
2280 | * must be set to point to the selected protocol (which may be within |in|). | |
2281 | * The length of the protocol name must be written into |outlen|. The | |
2282 | * server's advertised protocols are provided in |in| and |inlen|. The | |
2283 | * callback can assume that |in| is syntactically valid. The client must | |
2284 | * select a protocol. It is fatal to the connection if this callback returns | |
2285 | * a value other than SSL_TLSEXT_ERR_OK. | |
2286 | */ | |
2287 | void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx, | |
2288 | SSL_CTX_npn_select_cb_func cb, | |
2289 | void *arg) | |
2290 | { | |
2291 | ctx->ext.npn_select_cb = cb; | |
2292 | ctx->ext.npn_select_cb_arg = arg; | |
2293 | } | |
2294 | #endif | |
2295 | ||
2296 | /* | |
2297 | * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|. | |
2298 | * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit | |
2299 | * length-prefixed strings). Returns 0 on success. | |
2300 | */ | |
2301 | int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, | |
2302 | unsigned int protos_len) | |
2303 | { | |
2304 | OPENSSL_free(ctx->ext.alpn); | |
2305 | ctx->ext.alpn = OPENSSL_memdup(protos, protos_len); | |
2306 | if (ctx->ext.alpn == NULL) { | |
2307 | SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE); | |
2308 | return 1; | |
2309 | } | |
2310 | ctx->ext.alpn_len = protos_len; | |
2311 | ||
2312 | return 0; | |
2313 | } | |
2314 | ||
2315 | /* | |
2316 | * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|. | |
2317 | * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit | |
2318 | * length-prefixed strings). Returns 0 on success. | |
2319 | */ | |
2320 | int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, | |
2321 | unsigned int protos_len) | |
2322 | { | |
2323 | OPENSSL_free(ssl->ext.alpn); | |
2324 | ssl->ext.alpn = OPENSSL_memdup(protos, protos_len); | |
2325 | if (ssl->ext.alpn == NULL) { | |
2326 | SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE); | |
2327 | return 1; | |
2328 | } | |
2329 | ssl->ext.alpn_len = protos_len; | |
2330 | ||
2331 | return 0; | |
2332 | } | |
2333 | ||
2334 | /* | |
2335 | * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is | |
2336 | * called during ClientHello processing in order to select an ALPN protocol | |
2337 | * from the client's list of offered protocols. | |
2338 | */ | |
2339 | void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx, | |
2340 | SSL_CTX_alpn_select_cb_func cb, | |
2341 | void *arg) | |
2342 | { | |
2343 | ctx->ext.alpn_select_cb = cb; | |
2344 | ctx->ext.alpn_select_cb_arg = arg; | |
2345 | } | |
2346 | ||
2347 | /* | |
2348 | * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from | |
2349 | * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name | |
2350 | * (not including the leading length-prefix byte). If the server didn't | |
2351 | * respond with a negotiated protocol then |*len| will be zero. | |
2352 | */ | |
2353 | void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, | |
2354 | unsigned int *len) | |
2355 | { | |
2356 | *data = NULL; | |
2357 | if (ssl->s3) | |
2358 | *data = ssl->s3->alpn_selected; | |
2359 | if (*data == NULL) | |
2360 | *len = 0; | |
2361 | else | |
2362 | *len = (unsigned int)ssl->s3->alpn_selected_len; | |
2363 | } | |
2364 | ||
2365 | int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, | |
2366 | const char *label, size_t llen, | |
2367 | const unsigned char *p, size_t plen, | |
2368 | int use_context) | |
2369 | { | |
2370 | if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER) | |
2371 | return -1; | |
2372 | ||
2373 | return s->method->ssl3_enc->export_keying_material(s, out, olen, label, | |
2374 | llen, p, plen, | |
2375 | use_context); | |
2376 | } | |
2377 | ||
2378 | static unsigned long ssl_session_hash(const SSL_SESSION *a) | |
2379 | { | |
2380 | unsigned long l; | |
2381 | ||
2382 | l = (unsigned long) | |
2383 | ((unsigned int)a->session_id[0]) | | |
2384 | ((unsigned int)a->session_id[1] << 8L) | | |
2385 | ((unsigned long)a->session_id[2] << 16L) | | |
2386 | ((unsigned long)a->session_id[3] << 24L); | |
2387 | return (l); | |
2388 | } | |
2389 | ||
2390 | /* | |
2391 | * NB: If this function (or indeed the hash function which uses a sort of | |
2392 | * coarser function than this one) is changed, ensure | |
2393 | * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on | |
2394 | * being able to construct an SSL_SESSION that will collide with any existing | |
2395 | * session with a matching session ID. | |
2396 | */ | |
2397 | static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) | |
2398 | { | |
2399 | if (a->ssl_version != b->ssl_version) | |
2400 | return (1); | |
2401 | if (a->session_id_length != b->session_id_length) | |
2402 | return (1); | |
2403 | return (memcmp(a->session_id, b->session_id, a->session_id_length)); | |
2404 | } | |
2405 | ||
2406 | /* | |
2407 | * These wrapper functions should remain rather than redeclaring | |
2408 | * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each | |
2409 | * variable. The reason is that the functions aren't static, they're exposed | |
2410 | * via ssl.h. | |
2411 | */ | |
2412 | ||
2413 | SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth) | |
2414 | { | |
2415 | SSL_CTX *ret = NULL; | |
2416 | ||
2417 | if (meth == NULL) { | |
2418 | SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED); | |
2419 | return (NULL); | |
2420 | } | |
2421 | ||
2422 | if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL)) | |
2423 | return NULL; | |
2424 | ||
2425 | if (FIPS_mode() && (meth->version < TLS1_VERSION)) { | |
2426 | SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_AT_LEAST_TLS_1_0_NEEDED_IN_FIPS_MODE); | |
2427 | return NULL; | |
2428 | } | |
2429 | ||
2430 | if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { | |
2431 | SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); | |
2432 | goto err; | |
2433 | } | |
2434 | ret = OPENSSL_zalloc(sizeof(*ret)); | |
2435 | if (ret == NULL) | |
2436 | goto err; | |
2437 | ||
2438 | ret->method = meth; | |
2439 | ret->min_proto_version = 0; | |
2440 | ret->max_proto_version = 0; | |
2441 | ret->session_cache_mode = SSL_SESS_CACHE_SERVER; | |
2442 | ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; | |
2443 | /* We take the system default. */ | |
2444 | ret->session_timeout = meth->get_timeout(); | |
2445 | ret->references = 1; | |
2446 | ret->lock = CRYPTO_THREAD_lock_new(); | |
2447 | if (ret->lock == NULL) { | |
2448 | SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE); | |
2449 | OPENSSL_free(ret); | |
2450 | return NULL; | |
2451 | } | |
2452 | ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; | |
2453 | ret->verify_mode = SSL_VERIFY_NONE; | |
2454 | if ((ret->cert = ssl_cert_new()) == NULL) | |
2455 | goto err; | |
2456 | ||
2457 | ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp); | |
2458 | if (ret->sessions == NULL) | |
2459 | goto err; | |
2460 | ret->cert_store = X509_STORE_new(); | |
2461 | if (ret->cert_store == NULL) | |
2462 | goto err; | |
2463 | #ifndef OPENSSL_NO_CT | |
2464 | ret->ctlog_store = CTLOG_STORE_new(); | |
2465 | if (ret->ctlog_store == NULL) | |
2466 | goto err; | |
2467 | #endif | |
2468 | if (!ssl_create_cipher_list(ret->method, | |
2469 | &ret->cipher_list, &ret->cipher_list_by_id, | |
2470 | SSL_DEFAULT_CIPHER_LIST, ret->cert) | |
2471 | || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { | |
2472 | SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS); | |
2473 | goto err2; | |
2474 | } | |
2475 | ||
2476 | ret->param = X509_VERIFY_PARAM_new(); | |
2477 | if (ret->param == NULL) | |
2478 | goto err; | |
2479 | ||
2480 | if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { | |
2481 | SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); | |
2482 | goto err2; | |
2483 | } | |
2484 | if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { | |
2485 | SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); | |
2486 | goto err2; | |
2487 | } | |
2488 | ||
2489 | if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) | |
2490 | goto err; | |
2491 | ||
2492 | if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data)) | |
2493 | goto err; | |
2494 | ||
2495 | /* No compression for DTLS */ | |
2496 | if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)) | |
2497 | ret->comp_methods = SSL_COMP_get_compression_methods(); | |
2498 | ||
2499 | ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; | |
2500 | ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; | |
2501 | ||
2502 | /* Setup RFC5077 ticket keys */ | |
2503 | if ((RAND_bytes(ret->ext.tick_key_name, | |
2504 | sizeof(ret->ext.tick_key_name)) <= 0) | |
2505 | || (RAND_bytes(ret->ext.tick_hmac_key, | |
2506 | sizeof(ret->ext.tick_hmac_key)) <= 0) | |
2507 | || (RAND_bytes(ret->ext.tick_aes_key, | |
2508 | sizeof(ret->ext.tick_aes_key)) <= 0)) | |
2509 | ret->options |= SSL_OP_NO_TICKET; | |
2510 | ||
2511 | #ifndef OPENSSL_NO_SRP | |
2512 | if (!SSL_CTX_SRP_CTX_init(ret)) | |
2513 | goto err; | |
2514 | #endif | |
2515 | #ifndef OPENSSL_NO_ENGINE | |
2516 | # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO | |
2517 | # define eng_strx(x) #x | |
2518 | # define eng_str(x) eng_strx(x) | |
2519 | /* Use specific client engine automatically... ignore errors */ | |
2520 | { | |
2521 | ENGINE *eng; | |
2522 | eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); | |
2523 | if (!eng) { | |
2524 | ERR_clear_error(); | |
2525 | ENGINE_load_builtin_engines(); | |
2526 | eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); | |
2527 | } | |
2528 | if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) | |
2529 | ERR_clear_error(); | |
2530 | } | |
2531 | # endif | |
2532 | #endif | |
2533 | /* | |
2534 | * Default is to connect to non-RI servers. When RI is more widely | |
2535 | * deployed might change this. | |
2536 | */ | |
2537 | ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; | |
2538 | /* | |
2539 | * Disable compression by default to prevent CRIME. Applications can | |
2540 | * re-enable compression by configuring | |
2541 | * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION); | |
2542 | * or by using the SSL_CONF library. | |
2543 | */ | |
2544 | ret->options |= SSL_OP_NO_COMPRESSION; | |
2545 | ||
2546 | ret->ext.status_type = TLSEXT_STATUSTYPE_nothing; | |
2547 | ||
2548 | return ret; | |
2549 | err: | |
2550 | SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE); | |
2551 | err2: | |
2552 | SSL_CTX_free(ret); | |
2553 | return NULL; | |
2554 | } | |
2555 | ||
2556 | int SSL_CTX_up_ref(SSL_CTX *ctx) | |
2557 | { | |
2558 | int i; | |
2559 | ||
2560 | if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0) | |
2561 | return 0; | |
2562 | ||
2563 | REF_PRINT_COUNT("SSL_CTX", ctx); | |
2564 | REF_ASSERT_ISNT(i < 2); | |
2565 | return ((i > 1) ? 1 : 0); | |
2566 | } | |
2567 | ||
2568 | void SSL_CTX_free(SSL_CTX *a) | |
2569 | { | |
2570 | int i; | |
2571 | ||
2572 | if (a == NULL) | |
2573 | return; | |
2574 | ||
2575 | CRYPTO_DOWN_REF(&a->references, &i, a->lock); | |
2576 | REF_PRINT_COUNT("SSL_CTX", a); | |
2577 | if (i > 0) | |
2578 | return; | |
2579 | REF_ASSERT_ISNT(i < 0); | |
2580 | ||
2581 | X509_VERIFY_PARAM_free(a->param); | |
2582 | dane_ctx_final(&a->dane); | |
2583 | ||
2584 | /* | |
2585 | * Free internal session cache. However: the remove_cb() may reference | |
2586 | * the ex_data of SSL_CTX, thus the ex_data store can only be removed | |
2587 | * after the sessions were flushed. | |
2588 | * As the ex_data handling routines might also touch the session cache, | |
2589 | * the most secure solution seems to be: empty (flush) the cache, then | |
2590 | * free ex_data, then finally free the cache. | |
2591 | * (See ticket [openssl.org #212].) | |
2592 | */ | |
2593 | if (a->sessions != NULL) | |
2594 | SSL_CTX_flush_sessions(a, 0); | |
2595 | ||
2596 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); | |
2597 | lh_SSL_SESSION_free(a->sessions); | |
2598 | X509_STORE_free(a->cert_store); | |
2599 | #ifndef OPENSSL_NO_CT | |
2600 | CTLOG_STORE_free(a->ctlog_store); | |
2601 | #endif | |
2602 | sk_SSL_CIPHER_free(a->cipher_list); | |
2603 | sk_SSL_CIPHER_free(a->cipher_list_by_id); | |
2604 | ssl_cert_free(a->cert); | |
2605 | sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); | |
2606 | sk_X509_pop_free(a->extra_certs, X509_free); | |
2607 | a->comp_methods = NULL; | |
2608 | #ifndef OPENSSL_NO_SRTP | |
2609 | sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); | |
2610 | #endif | |
2611 | #ifndef OPENSSL_NO_SRP | |
2612 | SSL_CTX_SRP_CTX_free(a); | |
2613 | #endif | |
2614 | #ifndef OPENSSL_NO_ENGINE | |
2615 | ENGINE_finish(a->client_cert_engine); | |
2616 | #endif | |
2617 | ||
2618 | #ifndef OPENSSL_NO_EC | |
2619 | OPENSSL_free(a->ext.ecpointformats); | |
2620 | OPENSSL_free(a->ext.supportedgroups); | |
2621 | #endif | |
2622 | OPENSSL_free(a->ext.alpn); | |
2623 | ||
2624 | CRYPTO_THREAD_lock_free(a->lock); | |
2625 | ||
2626 | OPENSSL_free(a); | |
2627 | } | |
2628 | ||
2629 | void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) | |
2630 | { | |
2631 | ctx->default_passwd_callback = cb; | |
2632 | } | |
2633 | ||
2634 | void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) | |
2635 | { | |
2636 | ctx->default_passwd_callback_userdata = u; | |
2637 | } | |
2638 | ||
2639 | pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) | |
2640 | { | |
2641 | return ctx->default_passwd_callback; | |
2642 | } | |
2643 | ||
2644 | void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) | |
2645 | { | |
2646 | return ctx->default_passwd_callback_userdata; | |
2647 | } | |
2648 | ||
2649 | void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb) | |
2650 | { | |
2651 | s->default_passwd_callback = cb; | |
2652 | } | |
2653 | ||
2654 | void SSL_set_default_passwd_cb_userdata(SSL *s, void *u) | |
2655 | { | |
2656 | s->default_passwd_callback_userdata = u; | |
2657 | } | |
2658 | ||
2659 | pem_password_cb *SSL_get_default_passwd_cb(SSL *s) | |
2660 | { | |
2661 | return s->default_passwd_callback; | |
2662 | } | |
2663 | ||
2664 | void *SSL_get_default_passwd_cb_userdata(SSL *s) | |
2665 | { | |
2666 | return s->default_passwd_callback_userdata; | |
2667 | } | |
2668 | ||
2669 | void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, | |
2670 | int (*cb) (X509_STORE_CTX *, void *), | |
2671 | void *arg) | |
2672 | { | |
2673 | ctx->app_verify_callback = cb; | |
2674 | ctx->app_verify_arg = arg; | |
2675 | } | |
2676 | ||
2677 | void SSL_CTX_set_verify(SSL_CTX *ctx, int mode, | |
2678 | int (*cb) (int, X509_STORE_CTX *)) | |
2679 | { | |
2680 | ctx->verify_mode = mode; | |
2681 | ctx->default_verify_callback = cb; | |
2682 | } | |
2683 | ||
2684 | void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) | |
2685 | { | |
2686 | X509_VERIFY_PARAM_set_depth(ctx->param, depth); | |
2687 | } | |
2688 | ||
2689 | void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg) | |
2690 | { | |
2691 | ssl_cert_set_cert_cb(c->cert, cb, arg); | |
2692 | } | |
2693 | ||
2694 | void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg) | |
2695 | { | |
2696 | ssl_cert_set_cert_cb(s->cert, cb, arg); | |
2697 | } | |
2698 | ||
2699 | void ssl_set_masks(SSL *s) | |
2700 | { | |
2701 | #if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_GOST) | |
2702 | CERT_PKEY *cpk; | |
2703 | #endif | |
2704 | CERT *c = s->cert; | |
2705 | uint32_t *pvalid = s->s3->tmp.valid_flags; | |
2706 | int rsa_enc, rsa_sign, dh_tmp, dsa_sign; | |
2707 | unsigned long mask_k, mask_a; | |
2708 | #ifndef OPENSSL_NO_EC | |
2709 | int have_ecc_cert, ecdsa_ok; | |
2710 | X509 *x = NULL; | |
2711 | #endif | |
2712 | if (c == NULL) | |
2713 | return; | |
2714 | ||
2715 | #ifndef OPENSSL_NO_DH | |
2716 | dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto); | |
2717 | #else | |
2718 | dh_tmp = 0; | |
2719 | #endif | |
2720 | ||
2721 | rsa_enc = pvalid[SSL_PKEY_RSA_ENC] & CERT_PKEY_VALID; | |
2722 | rsa_sign = pvalid[SSL_PKEY_RSA_SIGN] & CERT_PKEY_SIGN; | |
2723 | dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_SIGN; | |
2724 | #ifndef OPENSSL_NO_EC | |
2725 | have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID; | |
2726 | #endif | |
2727 | mask_k = 0; | |
2728 | mask_a = 0; | |
2729 | ||
2730 | #ifdef CIPHER_DEBUG | |
2731 | fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n", | |
2732 | dh_tmp, rsa_enc, rsa_sign, dsa_sign); | |
2733 | #endif | |
2734 | ||
2735 | #ifndef OPENSSL_NO_GOST | |
2736 | cpk = &(c->pkeys[SSL_PKEY_GOST12_512]); | |
2737 | if (cpk->x509 != NULL && cpk->privatekey != NULL) { | |
2738 | mask_k |= SSL_kGOST; | |
2739 | mask_a |= SSL_aGOST12; | |
2740 | } | |
2741 | cpk = &(c->pkeys[SSL_PKEY_GOST12_256]); | |
2742 | if (cpk->x509 != NULL && cpk->privatekey != NULL) { | |
2743 | mask_k |= SSL_kGOST; | |
2744 | mask_a |= SSL_aGOST12; | |
2745 | } | |
2746 | cpk = &(c->pkeys[SSL_PKEY_GOST01]); | |
2747 | if (cpk->x509 != NULL && cpk->privatekey != NULL) { | |
2748 | mask_k |= SSL_kGOST; | |
2749 | mask_a |= SSL_aGOST01; | |
2750 | } | |
2751 | #endif | |
2752 | ||
2753 | if (rsa_enc) | |
2754 | mask_k |= SSL_kRSA; | |
2755 | ||
2756 | if (dh_tmp) | |
2757 | mask_k |= SSL_kDHE; | |
2758 | ||
2759 | if (rsa_enc || rsa_sign) { | |
2760 | mask_a |= SSL_aRSA; | |
2761 | } | |
2762 | ||
2763 | if (dsa_sign) { | |
2764 | mask_a |= SSL_aDSS; | |
2765 | } | |
2766 | ||
2767 | mask_a |= SSL_aNULL; | |
2768 | ||
2769 | /* | |
2770 | * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites | |
2771 | * depending on the key usage extension. | |
2772 | */ | |
2773 | #ifndef OPENSSL_NO_EC | |
2774 | if (have_ecc_cert) { | |
2775 | uint32_t ex_kusage; | |
2776 | cpk = &c->pkeys[SSL_PKEY_ECC]; | |
2777 | x = cpk->x509; | |
2778 | ex_kusage = X509_get_key_usage(x); | |
2779 | ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE; | |
2780 | if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN)) | |
2781 | ecdsa_ok = 0; | |
2782 | if (ecdsa_ok) | |
2783 | mask_a |= SSL_aECDSA; | |
2784 | } | |
2785 | #endif | |
2786 | ||
2787 | #ifndef OPENSSL_NO_EC | |
2788 | mask_k |= SSL_kECDHE; | |
2789 | #endif | |
2790 | ||
2791 | #ifndef OPENSSL_NO_PSK | |
2792 | mask_k |= SSL_kPSK; | |
2793 | mask_a |= SSL_aPSK; | |
2794 | if (mask_k & SSL_kRSA) | |
2795 | mask_k |= SSL_kRSAPSK; | |
2796 | if (mask_k & SSL_kDHE) | |
2797 | mask_k |= SSL_kDHEPSK; | |
2798 | if (mask_k & SSL_kECDHE) | |
2799 | mask_k |= SSL_kECDHEPSK; | |
2800 | #endif | |
2801 | ||
2802 | s->s3->tmp.mask_k = mask_k; | |
2803 | s->s3->tmp.mask_a = mask_a; | |
2804 | } | |
2805 | ||
2806 | #ifndef OPENSSL_NO_EC | |
2807 | ||
2808 | int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) | |
2809 | { | |
2810 | if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) { | |
2811 | /* key usage, if present, must allow signing */ | |
2812 | if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) { | |
2813 | SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, | |
2814 | SSL_R_ECC_CERT_NOT_FOR_SIGNING); | |
2815 | return 0; | |
2816 | } | |
2817 | } | |
2818 | return 1; /* all checks are ok */ | |
2819 | } | |
2820 | ||
2821 | #endif | |
2822 | ||
2823 | static int ssl_get_server_cert_index(const SSL *s) | |
2824 | { | |
2825 | int idx; | |
2826 | ||
2827 | /* | |
2828 | * TODO(TLS1.3): In TLS1.3 the selected certificate is not based on the | |
2829 | * ciphersuite. For now though it still is. Our only TLS1.3 ciphersuite | |
2830 | * forces the use of an RSA cert. This will need to change. | |
2831 | */ | |
2832 | idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher); | |
2833 | if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509) | |
2834 | idx = SSL_PKEY_RSA_SIGN; | |
2835 | if (idx == SSL_PKEY_GOST_EC) { | |
2836 | if (s->cert->pkeys[SSL_PKEY_GOST12_512].x509) | |
2837 | idx = SSL_PKEY_GOST12_512; | |
2838 | else if (s->cert->pkeys[SSL_PKEY_GOST12_256].x509) | |
2839 | idx = SSL_PKEY_GOST12_256; | |
2840 | else if (s->cert->pkeys[SSL_PKEY_GOST01].x509) | |
2841 | idx = SSL_PKEY_GOST01; | |
2842 | else | |
2843 | idx = -1; | |
2844 | } | |
2845 | if (idx == -1) | |
2846 | SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR); | |
2847 | return idx; | |
2848 | } | |
2849 | ||
2850 | CERT_PKEY *ssl_get_server_send_pkey(SSL *s) | |
2851 | { | |
2852 | CERT *c; | |
2853 | int i; | |
2854 | ||
2855 | c = s->cert; | |
2856 | if (!s->s3 || !s->s3->tmp.new_cipher) | |
2857 | return NULL; | |
2858 | ssl_set_masks(s); | |
2859 | ||
2860 | i = ssl_get_server_cert_index(s); | |
2861 | ||
2862 | /* This may or may not be an error. */ | |
2863 | if (i < 0) | |
2864 | return NULL; | |
2865 | ||
2866 | /* May be NULL. */ | |
2867 | return &c->pkeys[i]; | |
2868 | } | |
2869 | ||
2870 | EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, | |
2871 | const EVP_MD **pmd) | |
2872 | { | |
2873 | unsigned long alg_a; | |
2874 | CERT *c; | |
2875 | int idx = -1; | |
2876 | ||
2877 | alg_a = cipher->algorithm_auth; | |
2878 | c = s->cert; | |
2879 | ||
2880 | if ((alg_a & SSL_aDSS) && (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) | |
2881 | idx = SSL_PKEY_DSA_SIGN; | |
2882 | else if (alg_a & SSL_aRSA) { | |
2883 | if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) | |
2884 | idx = SSL_PKEY_RSA_SIGN; | |
2885 | else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) | |
2886 | idx = SSL_PKEY_RSA_ENC; | |
2887 | } else if ((alg_a & SSL_aECDSA) && | |
2888 | (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) | |
2889 | idx = SSL_PKEY_ECC; | |
2890 | if (idx == -1) { | |
2891 | SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); | |
2892 | return (NULL); | |
2893 | } | |
2894 | if (pmd) | |
2895 | *pmd = s->s3->tmp.md[idx]; | |
2896 | return c->pkeys[idx].privatekey; | |
2897 | } | |
2898 | ||
2899 | int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo, | |
2900 | size_t *serverinfo_length) | |
2901 | { | |
2902 | CERT *c = NULL; | |
2903 | int i = 0; | |
2904 | *serverinfo_length = 0; | |
2905 | ||
2906 | c = s->cert; | |
2907 | i = ssl_get_server_cert_index(s); | |
2908 | ||
2909 | if (i == -1) | |
2910 | return 0; | |
2911 | if (c->pkeys[i].serverinfo == NULL) | |
2912 | return 0; | |
2913 | ||
2914 | *serverinfo = c->pkeys[i].serverinfo; | |
2915 | *serverinfo_length = c->pkeys[i].serverinfo_length; | |
2916 | return 1; | |
2917 | } | |
2918 | ||
2919 | void ssl_update_cache(SSL *s, int mode) | |
2920 | { | |
2921 | int i; | |
2922 | ||
2923 | /* | |
2924 | * If the session_id_length is 0, we are not supposed to cache it, and it | |
2925 | * would be rather hard to do anyway :-) | |
2926 | */ | |
2927 | if (s->session->session_id_length == 0) | |
2928 | return; | |
2929 | ||
2930 | i = s->session_ctx->session_cache_mode; | |
2931 | if ((i & mode) && (!s->hit) | |
2932 | && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) | |
2933 | || SSL_CTX_add_session(s->session_ctx, s->session)) | |
2934 | && (s->session_ctx->new_session_cb != NULL)) { | |
2935 | SSL_SESSION_up_ref(s->session); | |
2936 | if (!s->session_ctx->new_session_cb(s, s->session)) | |
2937 | SSL_SESSION_free(s->session); | |
2938 | } | |
2939 | ||
2940 | /* auto flush every 255 connections */ | |
2941 | if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) { | |
2942 | if ((((mode & SSL_SESS_CACHE_CLIENT) | |
2943 | ? s->session_ctx->stats.sess_connect_good | |
2944 | : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { | |
2945 | SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL)); | |
2946 | } | |
2947 | } | |
2948 | } | |
2949 | ||
2950 | const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx) | |
2951 | { | |
2952 | return ctx->method; | |
2953 | } | |
2954 | ||
2955 | const SSL_METHOD *SSL_get_ssl_method(SSL *s) | |
2956 | { | |
2957 | return (s->method); | |
2958 | } | |
2959 | ||
2960 | int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) | |
2961 | { | |
2962 | int ret = 1; | |
2963 | ||
2964 | if (s->method != meth) { | |
2965 | const SSL_METHOD *sm = s->method; | |
2966 | int (*hf) (SSL *) = s->handshake_func; | |
2967 | ||
2968 | if (sm->version == meth->version) | |
2969 | s->method = meth; | |
2970 | else { | |
2971 | sm->ssl_free(s); | |
2972 | s->method = meth; | |
2973 | ret = s->method->ssl_new(s); | |
2974 | } | |
2975 | ||
2976 | if (hf == sm->ssl_connect) | |
2977 | s->handshake_func = meth->ssl_connect; | |
2978 | else if (hf == sm->ssl_accept) | |
2979 | s->handshake_func = meth->ssl_accept; | |
2980 | } | |
2981 | return (ret); | |
2982 | } | |
2983 | ||
2984 | int SSL_get_error(const SSL *s, int i) | |
2985 | { | |
2986 | int reason; | |
2987 | unsigned long l; | |
2988 | BIO *bio; | |
2989 | ||
2990 | if (i > 0) | |
2991 | return (SSL_ERROR_NONE); | |
2992 | ||
2993 | /* | |
2994 | * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc, | |
2995 | * where we do encode the error | |
2996 | */ | |
2997 | if ((l = ERR_peek_error()) != 0) { | |
2998 | if (ERR_GET_LIB(l) == ERR_LIB_SYS) | |
2999 | return (SSL_ERROR_SYSCALL); | |
3000 | else | |
3001 | return (SSL_ERROR_SSL); | |
3002 | } | |
3003 | ||
3004 | if (SSL_want_read(s)) { | |
3005 | bio = SSL_get_rbio(s); | |
3006 | if (BIO_should_read(bio)) | |
3007 | return (SSL_ERROR_WANT_READ); | |
3008 | else if (BIO_should_write(bio)) | |
3009 | /* | |
3010 | * This one doesn't make too much sense ... We never try to write | |
3011 | * to the rbio, and an application program where rbio and wbio | |
3012 | * are separate couldn't even know what it should wait for. | |
3013 | * However if we ever set s->rwstate incorrectly (so that we have | |
3014 | * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and | |
3015 | * wbio *are* the same, this test works around that bug; so it | |
3016 | * might be safer to keep it. | |
3017 | */ | |
3018 | return (SSL_ERROR_WANT_WRITE); | |
3019 | else if (BIO_should_io_special(bio)) { | |
3020 | reason = BIO_get_retry_reason(bio); | |
3021 | if (reason == BIO_RR_CONNECT) | |
3022 | return (SSL_ERROR_WANT_CONNECT); | |
3023 | else if (reason == BIO_RR_ACCEPT) | |
3024 | return (SSL_ERROR_WANT_ACCEPT); | |
3025 | else | |
3026 | return (SSL_ERROR_SYSCALL); /* unknown */ | |
3027 | } | |
3028 | } | |
3029 | ||
3030 | if (SSL_want_write(s)) { | |
3031 | /* | |
3032 | * Access wbio directly - in order to use the buffered bio if | |
3033 | * present | |
3034 | */ | |
3035 | bio = s->wbio; | |
3036 | if (BIO_should_write(bio)) | |
3037 | return (SSL_ERROR_WANT_WRITE); | |
3038 | else if (BIO_should_read(bio)) | |
3039 | /* | |
3040 | * See above (SSL_want_read(s) with BIO_should_write(bio)) | |
3041 | */ | |
3042 | return (SSL_ERROR_WANT_READ); | |
3043 | else if (BIO_should_io_special(bio)) { | |
3044 | reason = BIO_get_retry_reason(bio); | |
3045 | if (reason == BIO_RR_CONNECT) | |
3046 | return (SSL_ERROR_WANT_CONNECT); | |
3047 | else if (reason == BIO_RR_ACCEPT) | |
3048 | return (SSL_ERROR_WANT_ACCEPT); | |
3049 | else | |
3050 | return (SSL_ERROR_SYSCALL); | |
3051 | } | |
3052 | } | |
3053 | if (SSL_want_x509_lookup(s)) { | |
3054 | return (SSL_ERROR_WANT_X509_LOOKUP); | |
3055 | } | |
3056 | if (SSL_want_async(s)) { | |
3057 | return SSL_ERROR_WANT_ASYNC; | |
3058 | } | |
3059 | if (SSL_want_async_job(s)) { | |
3060 | return SSL_ERROR_WANT_ASYNC_JOB; | |
3061 | } | |
3062 | ||
3063 | if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && | |
3064 | (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) | |
3065 | return (SSL_ERROR_ZERO_RETURN); | |
3066 | ||
3067 | return (SSL_ERROR_SYSCALL); | |
3068 | } | |
3069 | ||
3070 | static int ssl_do_handshake_intern(void *vargs) | |
3071 | { | |
3072 | struct ssl_async_args *args; | |
3073 | SSL *s; | |
3074 | ||
3075 | args = (struct ssl_async_args *)vargs; | |
3076 | s = args->s; | |
3077 | ||
3078 | return s->handshake_func(s); | |
3079 | } | |
3080 | ||
3081 | int SSL_do_handshake(SSL *s) | |
3082 | { | |
3083 | int ret = 1; | |
3084 | ||
3085 | if (s->handshake_func == NULL) { | |
3086 | SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET); | |
3087 | return -1; | |
3088 | } | |
3089 | ||
3090 | s->method->ssl_renegotiate_check(s); | |
3091 | ||
3092 | if (SSL_in_init(s) || SSL_in_before(s)) { | |
3093 | if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) { | |
3094 | struct ssl_async_args args; | |
3095 | ||
3096 | args.s = s; | |
3097 | ||
3098 | ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern); | |
3099 | } else { | |
3100 | ret = s->handshake_func(s); | |
3101 | } | |
3102 | } | |
3103 | return ret; | |
3104 | } | |
3105 | ||
3106 | void SSL_set_accept_state(SSL *s) | |
3107 | { | |
3108 | s->server = 1; | |
3109 | s->shutdown = 0; | |
3110 | ossl_statem_clear(s); | |
3111 | s->handshake_func = s->method->ssl_accept; | |
3112 | clear_ciphers(s); | |
3113 | } | |
3114 | ||
3115 | void SSL_set_connect_state(SSL *s) | |
3116 | { | |
3117 | s->server = 0; | |
3118 | s->shutdown = 0; | |
3119 | ossl_statem_clear(s); | |
3120 | s->handshake_func = s->method->ssl_connect; | |
3121 | clear_ciphers(s); | |
3122 | } | |
3123 | ||
3124 | int ssl_undefined_function(SSL *s) | |
3125 | { | |
3126 | SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
3127 | return (0); | |
3128 | } | |
3129 | ||
3130 | int ssl_undefined_void_function(void) | |
3131 | { | |
3132 | SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, | |
3133 | ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
3134 | return (0); | |
3135 | } | |
3136 | ||
3137 | int ssl_undefined_const_function(const SSL *s) | |
3138 | { | |
3139 | return (0); | |
3140 | } | |
3141 | ||
3142 | const SSL_METHOD *ssl_bad_method(int ver) | |
3143 | { | |
3144 | SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
3145 | return (NULL); | |
3146 | } | |
3147 | ||
3148 | const char *ssl_protocol_to_string(int version) | |
3149 | { | |
3150 | switch(version) | |
3151 | { | |
3152 | case TLS1_3_VERSION: | |
3153 | return "TLSv1.3"; | |
3154 | ||
3155 | case TLS1_2_VERSION: | |
3156 | return "TLSv1.2"; | |
3157 | ||
3158 | case TLS1_1_VERSION: | |
3159 | return "TLSv1.1"; | |
3160 | ||
3161 | case TLS1_VERSION: | |
3162 | return "TLSv1"; | |
3163 | ||
3164 | case SSL3_VERSION: | |
3165 | return "SSLv3"; | |
3166 | ||
3167 | case DTLS1_BAD_VER: | |
3168 | return "DTLSv0.9"; | |
3169 | ||
3170 | case DTLS1_VERSION: | |
3171 | return "DTLSv1"; | |
3172 | ||
3173 | case DTLS1_2_VERSION: | |
3174 | return "DTLSv1.2"; | |
3175 | ||
3176 | default: | |
3177 | return "unknown"; | |
3178 | } | |
3179 | } | |
3180 | ||
3181 | const char *SSL_get_version(const SSL *s) | |
3182 | { | |
3183 | return ssl_protocol_to_string(s->version); | |
3184 | } | |
3185 | ||
3186 | SSL *SSL_dup(SSL *s) | |
3187 | { | |
3188 | STACK_OF(X509_NAME) *sk; | |
3189 | X509_NAME *xn; | |
3190 | SSL *ret; | |
3191 | int i; | |
3192 | ||
3193 | /* If we're not quiescent, just up_ref! */ | |
3194 | if (!SSL_in_init(s) || !SSL_in_before(s)) { | |
3195 | CRYPTO_UP_REF(&s->references, &i, s->lock); | |
3196 | return s; | |
3197 | } | |
3198 | ||
3199 | /* | |
3200 | * Otherwise, copy configuration state, and session if set. | |
3201 | */ | |
3202 | if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) | |
3203 | return (NULL); | |
3204 | ||
3205 | if (s->session != NULL) { | |
3206 | /* | |
3207 | * Arranges to share the same session via up_ref. This "copies" | |
3208 | * session-id, SSL_METHOD, sid_ctx, and 'cert' | |
3209 | */ | |
3210 | if (!SSL_copy_session_id(ret, s)) | |
3211 | goto err; | |
3212 | } else { | |
3213 | /* | |
3214 | * No session has been established yet, so we have to expect that | |
3215 | * s->cert or ret->cert will be changed later -- they should not both | |
3216 | * point to the same object, and thus we can't use | |
3217 | * SSL_copy_session_id. | |
3218 | */ | |
3219 | if (!SSL_set_ssl_method(ret, s->method)) | |
3220 | goto err; | |
3221 | ||
3222 | if (s->cert != NULL) { | |
3223 | ssl_cert_free(ret->cert); | |
3224 | ret->cert = ssl_cert_dup(s->cert); | |
3225 | if (ret->cert == NULL) | |
3226 | goto err; | |
3227 | } | |
3228 | ||
3229 | if (!SSL_set_session_id_context(ret, s->sid_ctx, | |
3230 | (int)s->sid_ctx_length)) | |
3231 | goto err; | |
3232 | } | |
3233 | ||
3234 | if (!ssl_dane_dup(ret, s)) | |
3235 | goto err; | |
3236 | ret->version = s->version; | |
3237 | ret->options = s->options; | |
3238 | ret->mode = s->mode; | |
3239 | SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); | |
3240 | SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); | |
3241 | ret->msg_callback = s->msg_callback; | |
3242 | ret->msg_callback_arg = s->msg_callback_arg; | |
3243 | SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s)); | |
3244 | SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); | |
3245 | ret->generate_session_id = s->generate_session_id; | |
3246 | ||
3247 | SSL_set_info_callback(ret, SSL_get_info_callback(s)); | |
3248 | ||
3249 | /* copy app data, a little dangerous perhaps */ | |
3250 | if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) | |
3251 | goto err; | |
3252 | ||
3253 | /* setup rbio, and wbio */ | |
3254 | if (s->rbio != NULL) { | |
3255 | if (!BIO_dup_state(s->rbio, (char *)&ret->rbio)) | |
3256 | goto err; | |
3257 | } | |
3258 | if (s->wbio != NULL) { | |
3259 | if (s->wbio != s->rbio) { | |
3260 | if (!BIO_dup_state(s->wbio, (char *)&ret->wbio)) | |
3261 | goto err; | |
3262 | } else { | |
3263 | BIO_up_ref(ret->rbio); | |
3264 | ret->wbio = ret->rbio; | |
3265 | } | |
3266 | } | |
3267 | ||
3268 | ret->server = s->server; | |
3269 | if (s->handshake_func) { | |
3270 | if (s->server) | |
3271 | SSL_set_accept_state(ret); | |
3272 | else | |
3273 | SSL_set_connect_state(ret); | |
3274 | } | |
3275 | ret->shutdown = s->shutdown; | |
3276 | ret->hit = s->hit; | |
3277 | ||
3278 | ret->default_passwd_callback = s->default_passwd_callback; | |
3279 | ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata; | |
3280 | ||
3281 | X509_VERIFY_PARAM_inherit(ret->param, s->param); | |
3282 | ||
3283 | /* dup the cipher_list and cipher_list_by_id stacks */ | |
3284 | if (s->cipher_list != NULL) { | |
3285 | if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) | |
3286 | goto err; | |
3287 | } | |
3288 | if (s->cipher_list_by_id != NULL) | |
3289 | if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id)) | |
3290 | == NULL) | |
3291 | goto err; | |
3292 | ||
3293 | /* Dup the client_CA list */ | |
3294 | if (s->client_CA != NULL) { | |
3295 | if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) | |
3296 | goto err; | |
3297 | ret->client_CA = sk; | |
3298 | for (i = 0; i < sk_X509_NAME_num(sk); i++) { | |
3299 | xn = sk_X509_NAME_value(sk, i); | |
3300 | if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) { | |
3301 | X509_NAME_free(xn); | |
3302 | goto err; | |
3303 | } | |
3304 | } | |
3305 | } | |
3306 | return ret; | |
3307 | ||
3308 | err: | |
3309 | SSL_free(ret); | |
3310 | return NULL; | |
3311 | } | |
3312 | ||
3313 | void ssl_clear_cipher_ctx(SSL *s) | |
3314 | { | |
3315 | if (s->enc_read_ctx != NULL) { | |
3316 | EVP_CIPHER_CTX_free(s->enc_read_ctx); | |
3317 | s->enc_read_ctx = NULL; | |
3318 | } | |
3319 | if (s->enc_write_ctx != NULL) { | |
3320 | EVP_CIPHER_CTX_free(s->enc_write_ctx); | |
3321 | s->enc_write_ctx = NULL; | |
3322 | } | |
3323 | #ifndef OPENSSL_NO_COMP | |
3324 | COMP_CTX_free(s->expand); | |
3325 | s->expand = NULL; | |
3326 | COMP_CTX_free(s->compress); | |
3327 | s->compress = NULL; | |
3328 | #endif | |
3329 | } | |
3330 | ||
3331 | X509 *SSL_get_certificate(const SSL *s) | |
3332 | { | |
3333 | if (s->cert != NULL) | |
3334 | return (s->cert->key->x509); | |
3335 | else | |
3336 | return (NULL); | |
3337 | } | |
3338 | ||
3339 | EVP_PKEY *SSL_get_privatekey(const SSL *s) | |
3340 | { | |
3341 | if (s->cert != NULL) | |
3342 | return (s->cert->key->privatekey); | |
3343 | else | |
3344 | return (NULL); | |
3345 | } | |
3346 | ||
3347 | X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx) | |
3348 | { | |
3349 | if (ctx->cert != NULL) | |
3350 | return ctx->cert->key->x509; | |
3351 | else | |
3352 | return NULL; | |
3353 | } | |
3354 | ||
3355 | EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx) | |
3356 | { | |
3357 | if (ctx->cert != NULL) | |
3358 | return ctx->cert->key->privatekey; | |
3359 | else | |
3360 | return NULL; | |
3361 | } | |
3362 | ||
3363 | const SSL_CIPHER *SSL_get_current_cipher(const SSL *s) | |
3364 | { | |
3365 | if ((s->session != NULL) && (s->session->cipher != NULL)) | |
3366 | return (s->session->cipher); | |
3367 | return (NULL); | |
3368 | } | |
3369 | ||
3370 | const COMP_METHOD *SSL_get_current_compression(SSL *s) | |
3371 | { | |
3372 | #ifndef OPENSSL_NO_COMP | |
3373 | return s->compress ? COMP_CTX_get_method(s->compress) : NULL; | |
3374 | #else | |
3375 | return NULL; | |
3376 | #endif | |
3377 | } | |
3378 | ||
3379 | const COMP_METHOD *SSL_get_current_expansion(SSL *s) | |
3380 | { | |
3381 | #ifndef OPENSSL_NO_COMP | |
3382 | return s->expand ? COMP_CTX_get_method(s->expand) : NULL; | |
3383 | #else | |
3384 | return NULL; | |
3385 | #endif | |
3386 | } | |
3387 | ||
3388 | int ssl_init_wbio_buffer(SSL *s) | |
3389 | { | |
3390 | BIO *bbio; | |
3391 | ||
3392 | if (s->bbio != NULL) { | |
3393 | /* Already buffered. */ | |
3394 | return 1; | |
3395 | } | |
3396 | ||
3397 | bbio = BIO_new(BIO_f_buffer()); | |
3398 | if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) { | |
3399 | BIO_free(bbio); | |
3400 | SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB); | |
3401 | return 0; | |
3402 | } | |
3403 | s->bbio = bbio; | |
3404 | s->wbio = BIO_push(bbio, s->wbio); | |
3405 | ||
3406 | return 1; | |
3407 | } | |
3408 | ||
3409 | void ssl_free_wbio_buffer(SSL *s) | |
3410 | { | |
3411 | /* callers ensure s is never null */ | |
3412 | if (s->bbio == NULL) | |
3413 | return; | |
3414 | ||
3415 | s->wbio = BIO_pop(s->wbio); | |
3416 | assert(s->wbio != NULL); | |
3417 | BIO_free(s->bbio); | |
3418 | s->bbio = NULL; | |
3419 | } | |
3420 | ||
3421 | void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) | |
3422 | { | |
3423 | ctx->quiet_shutdown = mode; | |
3424 | } | |
3425 | ||
3426 | int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) | |
3427 | { | |
3428 | return (ctx->quiet_shutdown); | |
3429 | } | |
3430 | ||
3431 | void SSL_set_quiet_shutdown(SSL *s, int mode) | |
3432 | { | |
3433 | s->quiet_shutdown = mode; | |
3434 | } | |
3435 | ||
3436 | int SSL_get_quiet_shutdown(const SSL *s) | |
3437 | { | |
3438 | return (s->quiet_shutdown); | |
3439 | } | |
3440 | ||
3441 | void SSL_set_shutdown(SSL *s, int mode) | |
3442 | { | |
3443 | s->shutdown = mode; | |
3444 | } | |
3445 | ||
3446 | int SSL_get_shutdown(const SSL *s) | |
3447 | { | |
3448 | return s->shutdown; | |
3449 | } | |
3450 | ||
3451 | int SSL_version(const SSL *s) | |
3452 | { | |
3453 | return s->version; | |
3454 | } | |
3455 | ||
3456 | int SSL_client_version(const SSL *s) | |
3457 | { | |
3458 | return s->client_version; | |
3459 | } | |
3460 | ||
3461 | SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) | |
3462 | { | |
3463 | return ssl->ctx; | |
3464 | } | |
3465 | ||
3466 | SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx) | |
3467 | { | |
3468 | CERT *new_cert; | |
3469 | if (ssl->ctx == ctx) | |
3470 | return ssl->ctx; | |
3471 | if (ctx == NULL) | |
3472 | ctx = ssl->initial_ctx; | |
3473 | new_cert = ssl_cert_dup(ctx->cert); | |
3474 | if (new_cert == NULL) { | |
3475 | return NULL; | |
3476 | } | |
3477 | ssl_cert_free(ssl->cert); | |
3478 | ssl->cert = new_cert; | |
3479 | ||
3480 | /* | |
3481 | * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH), | |
3482 | * so setter APIs must prevent invalid lengths from entering the system. | |
3483 | */ | |
3484 | OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)); | |
3485 | ||
3486 | /* | |
3487 | * If the session ID context matches that of the parent SSL_CTX, | |
3488 | * inherit it from the new SSL_CTX as well. If however the context does | |
3489 | * not match (i.e., it was set per-ssl with SSL_set_session_id_context), | |
3490 | * leave it unchanged. | |
3491 | */ | |
3492 | if ((ssl->ctx != NULL) && | |
3493 | (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) && | |
3494 | (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) { | |
3495 | ssl->sid_ctx_length = ctx->sid_ctx_length; | |
3496 | memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx)); | |
3497 | } | |
3498 | ||
3499 | SSL_CTX_up_ref(ctx); | |
3500 | SSL_CTX_free(ssl->ctx); /* decrement reference count */ | |
3501 | ssl->ctx = ctx; | |
3502 | ||
3503 | return ssl->ctx; | |
3504 | } | |
3505 | ||
3506 | int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) | |
3507 | { | |
3508 | return (X509_STORE_set_default_paths(ctx->cert_store)); | |
3509 | } | |
3510 | ||
3511 | int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx) | |
3512 | { | |
3513 | X509_LOOKUP *lookup; | |
3514 | ||
3515 | lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir()); | |
3516 | if (lookup == NULL) | |
3517 | return 0; | |
3518 | X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT); | |
3519 | ||
3520 | /* Clear any errors if the default directory does not exist */ | |
3521 | ERR_clear_error(); | |
3522 | ||
3523 | return 1; | |
3524 | } | |
3525 | ||
3526 | int SSL_CTX_set_default_verify_file(SSL_CTX *ctx) | |
3527 | { | |
3528 | X509_LOOKUP *lookup; | |
3529 | ||
3530 | lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file()); | |
3531 | if (lookup == NULL) | |
3532 | return 0; | |
3533 | ||
3534 | X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT); | |
3535 | ||
3536 | /* Clear any errors if the default file does not exist */ | |
3537 | ERR_clear_error(); | |
3538 | ||
3539 | return 1; | |
3540 | } | |
3541 | ||
3542 | int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, | |
3543 | const char *CApath) | |
3544 | { | |
3545 | return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); | |
3546 | } | |
3547 | ||
3548 | void SSL_set_info_callback(SSL *ssl, | |
3549 | void (*cb) (const SSL *ssl, int type, int val)) | |
3550 | { | |
3551 | ssl->info_callback = cb; | |
3552 | } | |
3553 | ||
3554 | /* | |
3555 | * One compiler (Diab DCC) doesn't like argument names in returned function | |
3556 | * pointer. | |
3557 | */ | |
3558 | void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ , | |
3559 | int /* type */ , | |
3560 | int /* val */ ) { | |
3561 | return ssl->info_callback; | |
3562 | } | |
3563 | ||
3564 | void SSL_set_verify_result(SSL *ssl, long arg) | |
3565 | { | |
3566 | ssl->verify_result = arg; | |
3567 | } | |
3568 | ||
3569 | long SSL_get_verify_result(const SSL *ssl) | |
3570 | { | |
3571 | return (ssl->verify_result); | |
3572 | } | |
3573 | ||
3574 | size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen) | |
3575 | { | |
3576 | if (outlen == 0) | |
3577 | return sizeof(ssl->s3->client_random); | |
3578 | if (outlen > sizeof(ssl->s3->client_random)) | |
3579 | outlen = sizeof(ssl->s3->client_random); | |
3580 | memcpy(out, ssl->s3->client_random, outlen); | |
3581 | return outlen; | |
3582 | } | |
3583 | ||
3584 | size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen) | |
3585 | { | |
3586 | if (outlen == 0) | |
3587 | return sizeof(ssl->s3->server_random); | |
3588 | if (outlen > sizeof(ssl->s3->server_random)) | |
3589 | outlen = sizeof(ssl->s3->server_random); | |
3590 | memcpy(out, ssl->s3->server_random, outlen); | |
3591 | return outlen; | |
3592 | } | |
3593 | ||
3594 | size_t SSL_SESSION_get_master_key(const SSL_SESSION *session, | |
3595 | unsigned char *out, size_t outlen) | |
3596 | { | |
3597 | if (outlen == 0) | |
3598 | return session->master_key_length; | |
3599 | if (outlen > session->master_key_length) | |
3600 | outlen = session->master_key_length; | |
3601 | memcpy(out, session->master_key, outlen); | |
3602 | return outlen; | |
3603 | } | |
3604 | ||
3605 | int SSL_set_ex_data(SSL *s, int idx, void *arg) | |
3606 | { | |
3607 | return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); | |
3608 | } | |
3609 | ||
3610 | void *SSL_get_ex_data(const SSL *s, int idx) | |
3611 | { | |
3612 | return (CRYPTO_get_ex_data(&s->ex_data, idx)); | |
3613 | } | |
3614 | ||
3615 | int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) | |
3616 | { | |
3617 | return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); | |
3618 | } | |
3619 | ||
3620 | void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) | |
3621 | { | |
3622 | return (CRYPTO_get_ex_data(&s->ex_data, idx)); | |
3623 | } | |
3624 | ||
3625 | int ssl_ok(SSL *s) | |
3626 | { | |
3627 | return (1); | |
3628 | } | |
3629 | ||
3630 | X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) | |
3631 | { | |
3632 | return (ctx->cert_store); | |
3633 | } | |
3634 | ||
3635 | void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) | |
3636 | { | |
3637 | X509_STORE_free(ctx->cert_store); | |
3638 | ctx->cert_store = store; | |
3639 | } | |
3640 | ||
3641 | void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store) | |
3642 | { | |
3643 | if (store != NULL) | |
3644 | X509_STORE_up_ref(store); | |
3645 | SSL_CTX_set_cert_store(ctx, store); | |
3646 | } | |
3647 | ||
3648 | int SSL_want(const SSL *s) | |
3649 | { | |
3650 | return (s->rwstate); | |
3651 | } | |
3652 | ||
3653 | /** | |
3654 | * \brief Set the callback for generating temporary DH keys. | |
3655 | * \param ctx the SSL context. | |
3656 | * \param dh the callback | |
3657 | */ | |
3658 | ||
3659 | #ifndef OPENSSL_NO_DH | |
3660 | void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, | |
3661 | DH *(*dh) (SSL *ssl, int is_export, | |
3662 | int keylength)) | |
3663 | { | |
3664 | SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh); | |
3665 | } | |
3666 | ||
3667 | void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export, | |
3668 | int keylength)) | |
3669 | { | |
3670 | SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh); | |
3671 | } | |
3672 | #endif | |
3673 | ||
3674 | #ifndef OPENSSL_NO_PSK | |
3675 | int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) | |
3676 | { | |
3677 | if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { | |
3678 | SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); | |
3679 | return 0; | |
3680 | } | |
3681 | OPENSSL_free(ctx->cert->psk_identity_hint); | |
3682 | if (identity_hint != NULL) { | |
3683 | ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint); | |
3684 | if (ctx->cert->psk_identity_hint == NULL) | |
3685 | return 0; | |
3686 | } else | |
3687 | ctx->cert->psk_identity_hint = NULL; | |
3688 | return 1; | |
3689 | } | |
3690 | ||
3691 | int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) | |
3692 | { | |
3693 | if (s == NULL) | |
3694 | return 0; | |
3695 | ||
3696 | if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { | |
3697 | SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); | |
3698 | return 0; | |
3699 | } | |
3700 | OPENSSL_free(s->cert->psk_identity_hint); | |
3701 | if (identity_hint != NULL) { | |
3702 | s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint); | |
3703 | if (s->cert->psk_identity_hint == NULL) | |
3704 | return 0; | |
3705 | } else | |
3706 | s->cert->psk_identity_hint = NULL; | |
3707 | return 1; | |
3708 | } | |
3709 | ||
3710 | const char *SSL_get_psk_identity_hint(const SSL *s) | |
3711 | { | |
3712 | if (s == NULL || s->session == NULL) | |
3713 | return NULL; | |
3714 | return (s->session->psk_identity_hint); | |
3715 | } | |
3716 | ||
3717 | const char *SSL_get_psk_identity(const SSL *s) | |
3718 | { | |
3719 | if (s == NULL || s->session == NULL) | |
3720 | return NULL; | |
3721 | return (s->session->psk_identity); | |
3722 | } | |
3723 | ||
3724 | void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb) | |
3725 | { | |
3726 | s->psk_client_callback = cb; | |
3727 | } | |
3728 | ||
3729 | void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb) | |
3730 | { | |
3731 | ctx->psk_client_callback = cb; | |
3732 | } | |
3733 | ||
3734 | void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb) | |
3735 | { | |
3736 | s->psk_server_callback = cb; | |
3737 | } | |
3738 | ||
3739 | void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb) | |
3740 | { | |
3741 | ctx->psk_server_callback = cb; | |
3742 | } | |
3743 | #endif | |
3744 | ||
3745 | void SSL_CTX_set_msg_callback(SSL_CTX *ctx, | |
3746 | void (*cb) (int write_p, int version, | |
3747 | int content_type, const void *buf, | |
3748 | size_t len, SSL *ssl, void *arg)) | |
3749 | { | |
3750 | SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); | |
3751 | } | |
3752 | ||
3753 | void SSL_set_msg_callback(SSL *ssl, | |
3754 | void (*cb) (int write_p, int version, | |
3755 | int content_type, const void *buf, | |
3756 | size_t len, SSL *ssl, void *arg)) | |
3757 | { | |
3758 | SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); | |
3759 | } | |
3760 | ||
3761 | void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, | |
3762 | int (*cb) (SSL *ssl, | |
3763 | int | |
3764 | is_forward_secure)) | |
3765 | { | |
3766 | SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB, | |
3767 | (void (*)(void))cb); | |
3768 | } | |
3769 | ||
3770 | void SSL_set_not_resumable_session_callback(SSL *ssl, | |
3771 | int (*cb) (SSL *ssl, | |
3772 | int is_forward_secure)) | |
3773 | { | |
3774 | SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB, | |
3775 | (void (*)(void))cb); | |
3776 | } | |
3777 | ||
3778 | /* | |
3779 | * Allocates new EVP_MD_CTX and sets pointer to it into given pointer | |
3780 | * variable, freeing EVP_MD_CTX previously stored in that variable, if any. | |
3781 | * If EVP_MD pointer is passed, initializes ctx with this md. | |
3782 | * Returns the newly allocated ctx; | |
3783 | */ | |
3784 | ||
3785 | EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) | |
3786 | { | |
3787 | ssl_clear_hash_ctx(hash); | |
3788 | *hash = EVP_MD_CTX_new(); | |
3789 | if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) { | |
3790 | EVP_MD_CTX_free(*hash); | |
3791 | *hash = NULL; | |
3792 | return NULL; | |
3793 | } | |
3794 | return *hash; | |
3795 | } | |
3796 | ||
3797 | void ssl_clear_hash_ctx(EVP_MD_CTX **hash) | |
3798 | { | |
3799 | ||
3800 | EVP_MD_CTX_free(*hash); | |
3801 | *hash = NULL; | |
3802 | } | |
3803 | ||
3804 | /* Retrieve handshake hashes */ | |
3805 | int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen, | |
3806 | size_t *hashlen) | |
3807 | { | |
3808 | EVP_MD_CTX *ctx = NULL; | |
3809 | EVP_MD_CTX *hdgst = s->s3->handshake_dgst; | |
3810 | int hashleni = EVP_MD_CTX_size(hdgst); | |
3811 | int ret = 0; | |
3812 | ||
3813 | if (hashleni < 0 || (size_t)hashleni > outlen) | |
3814 | goto err; | |
3815 | ||
3816 | ctx = EVP_MD_CTX_new(); | |
3817 | if (ctx == NULL) | |
3818 | goto err; | |
3819 | ||
3820 | if (!EVP_MD_CTX_copy_ex(ctx, hdgst) | |
3821 | || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) | |
3822 | goto err; | |
3823 | ||
3824 | *hashlen = hashleni; | |
3825 | ||
3826 | ret = 1; | |
3827 | err: | |
3828 | EVP_MD_CTX_free(ctx); | |
3829 | return ret; | |
3830 | } | |
3831 | ||
3832 | int SSL_session_reused(SSL *s) | |
3833 | { | |
3834 | return s->hit; | |
3835 | } | |
3836 | ||
3837 | int SSL_is_server(SSL *s) | |
3838 | { | |
3839 | return s->server; | |
3840 | } | |
3841 | ||
3842 | #if OPENSSL_API_COMPAT < 0x10100000L | |
3843 | void SSL_set_debug(SSL *s, int debug) | |
3844 | { | |
3845 | /* Old function was do-nothing anyway... */ | |
3846 | (void)s; | |
3847 | (void)debug; | |
3848 | } | |
3849 | #endif | |
3850 | ||
3851 | void SSL_set_security_level(SSL *s, int level) | |
3852 | { | |
3853 | s->cert->sec_level = level; | |
3854 | } | |
3855 | ||
3856 | int SSL_get_security_level(const SSL *s) | |
3857 | { | |
3858 | return s->cert->sec_level; | |
3859 | } | |
3860 | ||
3861 | void SSL_set_security_callback(SSL *s, | |
3862 | int (*cb) (const SSL *s, const SSL_CTX *ctx, | |
3863 | int op, int bits, int nid, | |
3864 | void *other, void *ex)) | |
3865 | { | |
3866 | s->cert->sec_cb = cb; | |
3867 | } | |
3868 | ||
3869 | int (*SSL_get_security_callback(const SSL *s)) (const SSL *s, | |
3870 | const SSL_CTX *ctx, int op, | |
3871 | int bits, int nid, void *other, | |
3872 | void *ex) { | |
3873 | return s->cert->sec_cb; | |
3874 | } | |
3875 | ||
3876 | void SSL_set0_security_ex_data(SSL *s, void *ex) | |
3877 | { | |
3878 | s->cert->sec_ex = ex; | |
3879 | } | |
3880 | ||
3881 | void *SSL_get0_security_ex_data(const SSL *s) | |
3882 | { | |
3883 | return s->cert->sec_ex; | |
3884 | } | |
3885 | ||
3886 | void SSL_CTX_set_security_level(SSL_CTX *ctx, int level) | |
3887 | { | |
3888 | ctx->cert->sec_level = level; | |
3889 | } | |
3890 | ||
3891 | int SSL_CTX_get_security_level(const SSL_CTX *ctx) | |
3892 | { | |
3893 | return ctx->cert->sec_level; | |
3894 | } | |
3895 | ||
3896 | void SSL_CTX_set_security_callback(SSL_CTX *ctx, | |
3897 | int (*cb) (const SSL *s, const SSL_CTX *ctx, | |
3898 | int op, int bits, int nid, | |
3899 | void *other, void *ex)) | |
3900 | { | |
3901 | ctx->cert->sec_cb = cb; | |
3902 | } | |
3903 | ||
3904 | int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s, | |
3905 | const SSL_CTX *ctx, | |
3906 | int op, int bits, | |
3907 | int nid, | |
3908 | void *other, | |
3909 | void *ex) { | |
3910 | return ctx->cert->sec_cb; | |
3911 | } | |
3912 | ||
3913 | void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex) | |
3914 | { | |
3915 | ctx->cert->sec_ex = ex; | |
3916 | } | |
3917 | ||
3918 | void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx) | |
3919 | { | |
3920 | return ctx->cert->sec_ex; | |
3921 | } | |
3922 | ||
3923 | /* | |
3924 | * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that | |
3925 | * can return unsigned long, instead of the generic long return value from the | |
3926 | * control interface. | |
3927 | */ | |
3928 | unsigned long SSL_CTX_get_options(const SSL_CTX *ctx) | |
3929 | { | |
3930 | return ctx->options; | |
3931 | } | |
3932 | ||
3933 | unsigned long SSL_get_options(const SSL *s) | |
3934 | { | |
3935 | return s->options; | |
3936 | } | |
3937 | ||
3938 | unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op) | |
3939 | { | |
3940 | return ctx->options |= op; | |
3941 | } | |
3942 | ||
3943 | unsigned long SSL_set_options(SSL *s, unsigned long op) | |
3944 | { | |
3945 | return s->options |= op; | |
3946 | } | |
3947 | ||
3948 | unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op) | |
3949 | { | |
3950 | return ctx->options &= ~op; | |
3951 | } | |
3952 | ||
3953 | unsigned long SSL_clear_options(SSL *s, unsigned long op) | |
3954 | { | |
3955 | return s->options &= ~op; | |
3956 | } | |
3957 | ||
3958 | STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s) | |
3959 | { | |
3960 | return s->verified_chain; | |
3961 | } | |
3962 | ||
3963 | IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); | |
3964 | ||
3965 | #ifndef OPENSSL_NO_CT | |
3966 | ||
3967 | /* | |
3968 | * Moves SCTs from the |src| stack to the |dst| stack. | |
3969 | * The source of each SCT will be set to |origin|. | |
3970 | * If |dst| points to a NULL pointer, a new stack will be created and owned by | |
3971 | * the caller. | |
3972 | * Returns the number of SCTs moved, or a negative integer if an error occurs. | |
3973 | */ | |
3974 | static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src, | |
3975 | sct_source_t origin) | |
3976 | { | |
3977 | int scts_moved = 0; | |
3978 | SCT *sct = NULL; | |
3979 | ||
3980 | if (*dst == NULL) { | |
3981 | *dst = sk_SCT_new_null(); | |
3982 | if (*dst == NULL) { | |
3983 | SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE); | |
3984 | goto err; | |
3985 | } | |
3986 | } | |
3987 | ||
3988 | while ((sct = sk_SCT_pop(src)) != NULL) { | |
3989 | if (SCT_set_source(sct, origin) != 1) | |
3990 | goto err; | |
3991 | ||
3992 | if (sk_SCT_push(*dst, sct) <= 0) | |
3993 | goto err; | |
3994 | scts_moved += 1; | |
3995 | } | |
3996 | ||
3997 | return scts_moved; | |
3998 | err: | |
3999 | if (sct != NULL) | |
4000 | sk_SCT_push(src, sct); /* Put the SCT back */ | |
4001 | return -1; | |
4002 | } | |
4003 | ||
4004 | /* | |
4005 | * Look for data collected during ServerHello and parse if found. | |
4006 | * Returns the number of SCTs extracted. | |
4007 | */ | |
4008 | static int ct_extract_tls_extension_scts(SSL *s) | |
4009 | { | |
4010 | int scts_extracted = 0; | |
4011 | ||
4012 | if (s->ext.scts != NULL) { | |
4013 | const unsigned char *p = s->ext.scts; | |
4014 | STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len); | |
4015 | ||
4016 | scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION); | |
4017 | ||
4018 | SCT_LIST_free(scts); | |
4019 | } | |
4020 | ||
4021 | return scts_extracted; | |
4022 | } | |
4023 | ||
4024 | /* | |
4025 | * Checks for an OCSP response and then attempts to extract any SCTs found if it | |
4026 | * contains an SCT X509 extension. They will be stored in |s->scts|. | |
4027 | * Returns: | |
4028 | * - The number of SCTs extracted, assuming an OCSP response exists. | |
4029 | * - 0 if no OCSP response exists or it contains no SCTs. | |
4030 | * - A negative integer if an error occurs. | |
4031 | */ | |
4032 | static int ct_extract_ocsp_response_scts(SSL *s) | |
4033 | { | |
4034 | # ifndef OPENSSL_NO_OCSP | |
4035 | int scts_extracted = 0; | |
4036 | const unsigned char *p; | |
4037 | OCSP_BASICRESP *br = NULL; | |
4038 | OCSP_RESPONSE *rsp = NULL; | |
4039 | STACK_OF(SCT) *scts = NULL; | |
4040 | int i; | |
4041 | ||
4042 | if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0) | |
4043 | goto err; | |
4044 | ||
4045 | p = s->ext.ocsp.resp; | |
4046 | rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len); | |
4047 | if (rsp == NULL) | |
4048 | goto err; | |
4049 | ||
4050 | br = OCSP_response_get1_basic(rsp); | |
4051 | if (br == NULL) | |
4052 | goto err; | |
4053 | ||
4054 | for (i = 0; i < OCSP_resp_count(br); ++i) { | |
4055 | OCSP_SINGLERESP *single = OCSP_resp_get0(br, i); | |
4056 | ||
4057 | if (single == NULL) | |
4058 | continue; | |
4059 | ||
4060 | scts = | |
4061 | OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL); | |
4062 | scts_extracted = | |
4063 | ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE); | |
4064 | if (scts_extracted < 0) | |
4065 | goto err; | |
4066 | } | |
4067 | err: | |
4068 | SCT_LIST_free(scts); | |
4069 | OCSP_BASICRESP_free(br); | |
4070 | OCSP_RESPONSE_free(rsp); | |
4071 | return scts_extracted; | |
4072 | # else | |
4073 | /* Behave as if no OCSP response exists */ | |
4074 | return 0; | |
4075 | # endif | |
4076 | } | |
4077 | ||
4078 | /* | |
4079 | * Attempts to extract SCTs from the peer certificate. | |
4080 | * Return the number of SCTs extracted, or a negative integer if an error | |
4081 | * occurs. | |
4082 | */ | |
4083 | static int ct_extract_x509v3_extension_scts(SSL *s) | |
4084 | { | |
4085 | int scts_extracted = 0; | |
4086 | X509 *cert = s->session != NULL ? s->session->peer : NULL; | |
4087 | ||
4088 | if (cert != NULL) { | |
4089 | STACK_OF(SCT) *scts = | |
4090 | X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL); | |
4091 | ||
4092 | scts_extracted = | |
4093 | ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION); | |
4094 | ||
4095 | SCT_LIST_free(scts); | |
4096 | } | |
4097 | ||
4098 | return scts_extracted; | |
4099 | } | |
4100 | ||
4101 | /* | |
4102 | * Attempts to find all received SCTs by checking TLS extensions, the OCSP | |
4103 | * response (if it exists) and X509v3 extensions in the certificate. | |
4104 | * Returns NULL if an error occurs. | |
4105 | */ | |
4106 | const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s) | |
4107 | { | |
4108 | if (!s->scts_parsed) { | |
4109 | if (ct_extract_tls_extension_scts(s) < 0 || | |
4110 | ct_extract_ocsp_response_scts(s) < 0 || | |
4111 | ct_extract_x509v3_extension_scts(s) < 0) | |
4112 | goto err; | |
4113 | ||
4114 | s->scts_parsed = 1; | |
4115 | } | |
4116 | return s->scts; | |
4117 | err: | |
4118 | return NULL; | |
4119 | } | |
4120 | ||
4121 | static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx, | |
4122 | const STACK_OF(SCT) *scts, void *unused_arg) | |
4123 | { | |
4124 | return 1; | |
4125 | } | |
4126 | ||
4127 | static int ct_strict(const CT_POLICY_EVAL_CTX * ctx, | |
4128 | const STACK_OF(SCT) *scts, void *unused_arg) | |
4129 | { | |
4130 | int count = scts != NULL ? sk_SCT_num(scts) : 0; | |
4131 | int i; | |
4132 | ||
4133 | for (i = 0; i < count; ++i) { | |
4134 | SCT *sct = sk_SCT_value(scts, i); | |
4135 | int status = SCT_get_validation_status(sct); | |
4136 | ||
4137 | if (status == SCT_VALIDATION_STATUS_VALID) | |
4138 | return 1; | |
4139 | } | |
4140 | SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS); | |
4141 | return 0; | |
4142 | } | |
4143 | ||
4144 | int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback, | |
4145 | void *arg) | |
4146 | { | |
4147 | /* | |
4148 | * Since code exists that uses the custom extension handler for CT, look | |
4149 | * for this and throw an error if they have already registered to use CT. | |
4150 | */ | |
4151 | if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx, | |
4152 | TLSEXT_TYPE_signed_certificate_timestamp)) | |
4153 | { | |
4154 | SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK, | |
4155 | SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED); | |
4156 | return 0; | |
4157 | } | |
4158 | ||
4159 | if (callback != NULL) { | |
4160 | /* | |
4161 | * If we are validating CT, then we MUST accept SCTs served via OCSP | |
4162 | */ | |
4163 | if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp)) | |
4164 | return 0; | |
4165 | } | |
4166 | ||
4167 | s->ct_validation_callback = callback; | |
4168 | s->ct_validation_callback_arg = arg; | |
4169 | ||
4170 | return 1; | |
4171 | } | |
4172 | ||
4173 | int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx, | |
4174 | ssl_ct_validation_cb callback, void *arg) | |
4175 | { | |
4176 | /* | |
4177 | * Since code exists that uses the custom extension handler for CT, look for | |
4178 | * this and throw an error if they have already registered to use CT. | |
4179 | */ | |
4180 | if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx, | |
4181 | TLSEXT_TYPE_signed_certificate_timestamp)) | |
4182 | { | |
4183 | SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK, | |
4184 | SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED); | |
4185 | return 0; | |
4186 | } | |
4187 | ||
4188 | ctx->ct_validation_callback = callback; | |
4189 | ctx->ct_validation_callback_arg = arg; | |
4190 | return 1; | |
4191 | } | |
4192 | ||
4193 | int SSL_ct_is_enabled(const SSL *s) | |
4194 | { | |
4195 | return s->ct_validation_callback != NULL; | |
4196 | } | |
4197 | ||
4198 | int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx) | |
4199 | { | |
4200 | return ctx->ct_validation_callback != NULL; | |
4201 | } | |
4202 | ||
4203 | int ssl_validate_ct(SSL *s) | |
4204 | { | |
4205 | int ret = 0; | |
4206 | X509 *cert = s->session != NULL ? s->session->peer : NULL; | |
4207 | X509 *issuer; | |
4208 | SSL_DANE *dane = &s->dane; | |
4209 | CT_POLICY_EVAL_CTX *ctx = NULL; | |
4210 | const STACK_OF(SCT) *scts; | |
4211 | ||
4212 | /* | |
4213 | * If no callback is set, the peer is anonymous, or its chain is invalid, | |
4214 | * skip SCT validation - just return success. Applications that continue | |
4215 | * handshakes without certificates, with unverified chains, or pinned leaf | |
4216 | * certificates are outside the scope of the WebPKI and CT. | |
4217 | * | |
4218 | * The above exclusions notwithstanding the vast majority of peers will | |
4219 | * have rather ordinary certificate chains validated by typical | |
4220 | * applications that perform certificate verification and therefore will | |
4221 | * process SCTs when enabled. | |
4222 | */ | |
4223 | if (s->ct_validation_callback == NULL || cert == NULL || | |
4224 | s->verify_result != X509_V_OK || | |
4225 | s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1) | |
4226 | return 1; | |
4227 | ||
4228 | /* | |
4229 | * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3) | |
4230 | * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2 | |
4231 | */ | |
4232 | if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) { | |
4233 | switch (dane->mtlsa->usage) { | |
4234 | case DANETLS_USAGE_DANE_TA: | |
4235 | case DANETLS_USAGE_DANE_EE: | |
4236 | return 1; | |
4237 | } | |
4238 | } | |
4239 | ||
4240 | ctx = CT_POLICY_EVAL_CTX_new(); | |
4241 | if (ctx == NULL) { | |
4242 | SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE); | |
4243 | goto end; | |
4244 | } | |
4245 | ||
4246 | issuer = sk_X509_value(s->verified_chain, 1); | |
4247 | CT_POLICY_EVAL_CTX_set1_cert(ctx, cert); | |
4248 | CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer); | |
4249 | CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store); | |
4250 | CT_POLICY_EVAL_CTX_set_time(ctx, SSL_SESSION_get_time(SSL_get0_session(s))); | |
4251 | ||
4252 | scts = SSL_get0_peer_scts(s); | |
4253 | ||
4254 | /* | |
4255 | * This function returns success (> 0) only when all the SCTs are valid, 0 | |
4256 | * when some are invalid, and < 0 on various internal errors (out of | |
4257 | * memory, etc.). Having some, or even all, invalid SCTs is not sufficient | |
4258 | * reason to abort the handshake, that decision is up to the callback. | |
4259 | * Therefore, we error out only in the unexpected case that the return | |
4260 | * value is negative. | |
4261 | * | |
4262 | * XXX: One might well argue that the return value of this function is an | |
4263 | * unfortunate design choice. Its job is only to determine the validation | |
4264 | * status of each of the provided SCTs. So long as it correctly separates | |
4265 | * the wheat from the chaff it should return success. Failure in this case | |
4266 | * ought to correspond to an inability to carry out its duties. | |
4267 | */ | |
4268 | if (SCT_LIST_validate(scts, ctx) < 0) { | |
4269 | SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED); | |
4270 | goto end; | |
4271 | } | |
4272 | ||
4273 | ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg); | |
4274 | if (ret < 0) | |
4275 | ret = 0; /* This function returns 0 on failure */ | |
4276 | ||
4277 | end: | |
4278 | CT_POLICY_EVAL_CTX_free(ctx); | |
4279 | /* | |
4280 | * With SSL_VERIFY_NONE the session may be cached and re-used despite a | |
4281 | * failure return code here. Also the application may wish the complete | |
4282 | * the handshake, and then disconnect cleanly at a higher layer, after | |
4283 | * checking the verification status of the completed connection. | |
4284 | * | |
4285 | * We therefore force a certificate verification failure which will be | |
4286 | * visible via SSL_get_verify_result() and cached as part of any resumed | |
4287 | * session. | |
4288 | * | |
4289 | * Note: the permissive callback is for information gathering only, always | |
4290 | * returns success, and does not affect verification status. Only the | |
4291 | * strict callback or a custom application-specified callback can trigger | |
4292 | * connection failure or record a verification error. | |
4293 | */ | |
4294 | if (ret <= 0) | |
4295 | s->verify_result = X509_V_ERR_NO_VALID_SCTS; | |
4296 | return ret; | |
4297 | } | |
4298 | ||
4299 | int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode) | |
4300 | { | |
4301 | switch (validation_mode) { | |
4302 | default: | |
4303 | SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE); | |
4304 | return 0; | |
4305 | case SSL_CT_VALIDATION_PERMISSIVE: | |
4306 | return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL); | |
4307 | case SSL_CT_VALIDATION_STRICT: | |
4308 | return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL); | |
4309 | } | |
4310 | } | |
4311 | ||
4312 | int SSL_enable_ct(SSL *s, int validation_mode) | |
4313 | { | |
4314 | switch (validation_mode) { | |
4315 | default: | |
4316 | SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE); | |
4317 | return 0; | |
4318 | case SSL_CT_VALIDATION_PERMISSIVE: | |
4319 | return SSL_set_ct_validation_callback(s, ct_permissive, NULL); | |
4320 | case SSL_CT_VALIDATION_STRICT: | |
4321 | return SSL_set_ct_validation_callback(s, ct_strict, NULL); | |
4322 | } | |
4323 | } | |
4324 | ||
4325 | int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx) | |
4326 | { | |
4327 | return CTLOG_STORE_load_default_file(ctx->ctlog_store); | |
4328 | } | |
4329 | ||
4330 | int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path) | |
4331 | { | |
4332 | return CTLOG_STORE_load_file(ctx->ctlog_store, path); | |
4333 | } | |
4334 | ||
4335 | void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs) | |
4336 | { | |
4337 | CTLOG_STORE_free(ctx->ctlog_store); | |
4338 | ctx->ctlog_store = logs; | |
4339 | } | |
4340 | ||
4341 | const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx) | |
4342 | { | |
4343 | return ctx->ctlog_store; | |
4344 | } | |
4345 | ||
4346 | #endif | |
4347 | ||
4348 | void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb) | |
4349 | { | |
4350 | ctx->keylog_callback = cb; | |
4351 | } | |
4352 | ||
4353 | SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx) | |
4354 | { | |
4355 | return ctx->keylog_callback; | |
4356 | } | |
4357 | ||
4358 | static int nss_keylog_int(const char *prefix, | |
4359 | SSL *ssl, | |
4360 | const uint8_t *parameter_1, | |
4361 | size_t parameter_1_len, | |
4362 | const uint8_t *parameter_2, | |
4363 | size_t parameter_2_len) | |
4364 | { | |
4365 | char *out = NULL; | |
4366 | char *cursor = NULL; | |
4367 | size_t out_len = 0; | |
4368 | size_t i; | |
4369 | size_t prefix_len; | |
4370 | ||
4371 | if (ssl->ctx->keylog_callback == NULL) return 1; | |
4372 | ||
4373 | /* | |
4374 | * Our output buffer will contain the following strings, rendered with | |
4375 | * space characters in between, terminated by a NULL character: first the | |
4376 | * prefix, then the first parameter, then the second parameter. The | |
4377 | * meaning of each parameter depends on the specific key material being | |
4378 | * logged. Note that the first and second parameters are encoded in | |
4379 | * hexadecimal, so we need a buffer that is twice their lengths. | |
4380 | */ | |
4381 | prefix_len = strlen(prefix); | |
4382 | out_len = prefix_len + (2*parameter_1_len) + (2*parameter_2_len) + 3; | |
4383 | if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) { | |
4384 | SSLerr(SSL_F_NSS_KEYLOG_INT, ERR_R_MALLOC_FAILURE); | |
4385 | return 0; | |
4386 | } | |
4387 | ||
4388 | strcpy(cursor, prefix); | |
4389 | cursor += prefix_len; | |
4390 | *cursor++ = ' '; | |
4391 | ||
4392 | for (i = 0; i < parameter_1_len; i++) { | |
4393 | sprintf(cursor, "%02x", parameter_1[i]); | |
4394 | cursor += 2; | |
4395 | } | |
4396 | *cursor++ = ' '; | |
4397 | ||
4398 | for (i = 0; i < parameter_2_len; i++) { | |
4399 | sprintf(cursor, "%02x", parameter_2[i]); | |
4400 | cursor += 2; | |
4401 | } | |
4402 | *cursor = '\0'; | |
4403 | ||
4404 | ssl->ctx->keylog_callback(ssl, (const char *)out); | |
4405 | OPENSSL_free(out); | |
4406 | return 1; | |
4407 | ||
4408 | } | |
4409 | ||
4410 | int ssl_log_rsa_client_key_exchange(SSL *ssl, | |
4411 | const uint8_t *encrypted_premaster, | |
4412 | size_t encrypted_premaster_len, | |
4413 | const uint8_t *premaster, | |
4414 | size_t premaster_len) | |
4415 | { | |
4416 | if (encrypted_premaster_len < 8) { | |
4417 | SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR); | |
4418 | return 0; | |
4419 | } | |
4420 | ||
4421 | return nss_keylog_int("RSA", | |
4422 | ssl, | |
4423 | encrypted_premaster, | |
4424 | encrypted_premaster_len, | |
4425 | premaster, | |
4426 | premaster_len); | |
4427 | } | |
4428 | ||
4429 | int ssl_log_master_secret(SSL *ssl, | |
4430 | const uint8_t *client_random, | |
4431 | size_t client_random_len, | |
4432 | const uint8_t *master, | |
4433 | size_t master_len) | |
4434 | { | |
4435 | /* | |
4436 | * TLSv1.3 changes the derivation of the master secret compared to earlier | |
4437 | * TLS versions, meaning that logging it out is less useful. Instead we | |
4438 | * want to log out other secrets: specifically, the handshake and | |
4439 | * application traffic secrets. For this reason, if this function is called | |
4440 | * for TLSv1.3 we don't bother logging, and just return success | |
4441 | * immediately. | |
4442 | */ | |
4443 | if (SSL_IS_TLS13(ssl)) return 1; | |
4444 | ||
4445 | if (client_random_len != 32) { | |
4446 | SSLerr(SSL_F_SSL_LOG_MASTER_SECRET, ERR_R_INTERNAL_ERROR); | |
4447 | return 0; | |
4448 | } | |
4449 | ||
4450 | return nss_keylog_int("CLIENT_RANDOM", | |
4451 | ssl, | |
4452 | client_random, | |
4453 | client_random_len, | |
4454 | master, | |
4455 | master_len); | |
4456 | } | |
4457 |