1 /*
2 * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
5 *
6 * Licensed under the OpenSSL license (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
10 */
11
12 #include <stdio.h>
13 #include "ssl_local.h"
14 #include "e_os.h"
15 #include <openssl/objects.h>
16 #include <openssl/x509v3.h>
17 #include <openssl/rand.h>
18 #include <openssl/rand_drbg.h>
19 #include <openssl/ocsp.h>
20 #include <openssl/dh.h>
21 #include <openssl/engine.h>
22 #include <openssl/async.h>
23 #include <openssl/ct.h>
24 #include "internal/cryptlib.h"
25 #include "internal/refcount.h"
26 #include "internal/ktls.h"
27
28 const char SSL_version_str[] = OPENSSL_VERSION_TEXT;
29
ssl_undefined_function_1(SSL * ssl,SSL3_RECORD * r,size_t s,int t)30 static int ssl_undefined_function_1(SSL *ssl, SSL3_RECORD *r, size_t s, int t)
31 {
32 (void)r;
33 (void)s;
34 (void)t;
35 return ssl_undefined_function(ssl);
36 }
37
ssl_undefined_function_2(SSL * ssl,SSL3_RECORD * r,unsigned char * s,int t)38 static int ssl_undefined_function_2(SSL *ssl, SSL3_RECORD *r, unsigned char *s,
39 int t)
40 {
41 (void)r;
42 (void)s;
43 (void)t;
44 return ssl_undefined_function(ssl);
45 }
46
ssl_undefined_function_3(SSL * ssl,unsigned char * r,unsigned char * s,size_t t,size_t * u)47 static int ssl_undefined_function_3(SSL *ssl, unsigned char *r,
48 unsigned char *s, size_t t, size_t *u)
49 {
50 (void)r;
51 (void)s;
52 (void)t;
53 (void)u;
54 return ssl_undefined_function(ssl);
55 }
56
ssl_undefined_function_4(SSL * ssl,int r)57 static int ssl_undefined_function_4(SSL *ssl, int r)
58 {
59 (void)r;
60 return ssl_undefined_function(ssl);
61 }
62
ssl_undefined_function_5(SSL * ssl,const char * r,size_t s,unsigned char * t)63 static size_t ssl_undefined_function_5(SSL *ssl, const char *r, size_t s,
64 unsigned char *t)
65 {
66 (void)r;
67 (void)s;
68 (void)t;
69 return ssl_undefined_function(ssl);
70 }
71
ssl_undefined_function_6(int r)72 static int ssl_undefined_function_6(int r)
73 {
74 (void)r;
75 return ssl_undefined_function(NULL);
76 }
77
ssl_undefined_function_7(SSL * ssl,unsigned char * r,size_t s,const char * t,size_t u,const unsigned char * v,size_t w,int x)78 static int ssl_undefined_function_7(SSL *ssl, unsigned char *r, size_t s,
79 const char *t, size_t u,
80 const unsigned char *v, size_t w, int x)
81 {
82 (void)r;
83 (void)s;
84 (void)t;
85 (void)u;
86 (void)v;
87 (void)w;
88 (void)x;
89 return ssl_undefined_function(ssl);
90 }
91
92 SSL3_ENC_METHOD ssl3_undef_enc_method = {
93 ssl_undefined_function_1,
94 ssl_undefined_function_2,
95 ssl_undefined_function,
96 ssl_undefined_function_3,
97 ssl_undefined_function_4,
98 ssl_undefined_function_5,
99 NULL, /* client_finished_label */
100 0, /* client_finished_label_len */
101 NULL, /* server_finished_label */
102 0, /* server_finished_label_len */
103 ssl_undefined_function_6,
104 ssl_undefined_function_7,
105 };
106
107 struct ssl_async_args {
108 SSL *s;
109 void *buf;
110 size_t num;
111 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
112 union {
113 int (*func_read) (SSL *, void *, size_t, size_t *);
114 int (*func_write) (SSL *, const void *, size_t, size_t *);
115 int (*func_other) (SSL *);
116 } f;
117 };
118
119 static const struct {
120 uint8_t mtype;
121 uint8_t ord;
122 int nid;
123 } dane_mds[] = {
124 {
125 DANETLS_MATCHING_FULL, 0, NID_undef
126 },
127 {
128 DANETLS_MATCHING_2256, 1, NID_sha256
129 },
130 {
131 DANETLS_MATCHING_2512, 2, NID_sha512
132 },
133 };
134
dane_ctx_enable(struct dane_ctx_st * dctx)135 static int dane_ctx_enable(struct dane_ctx_st *dctx)
136 {
137 const EVP_MD **mdevp;
138 uint8_t *mdord;
139 uint8_t mdmax = DANETLS_MATCHING_LAST;
140 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
141 size_t i;
142
143 if (dctx->mdevp != NULL)
144 return 1;
145
146 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
147 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
148
149 if (mdord == NULL || mdevp == NULL) {
150 OPENSSL_free(mdord);
151 OPENSSL_free(mdevp);
152 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
153 return 0;
154 }
155
156 /* Install default entries */
157 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
158 const EVP_MD *md;
159
160 if (dane_mds[i].nid == NID_undef ||
161 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
162 continue;
163 mdevp[dane_mds[i].mtype] = md;
164 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
165 }
166
167 dctx->mdevp = mdevp;
168 dctx->mdord = mdord;
169 dctx->mdmax = mdmax;
170
171 return 1;
172 }
173
dane_ctx_final(struct dane_ctx_st * dctx)174 static void dane_ctx_final(struct dane_ctx_st *dctx)
175 {
176 OPENSSL_free(dctx->mdevp);
177 dctx->mdevp = NULL;
178
179 OPENSSL_free(dctx->mdord);
180 dctx->mdord = NULL;
181 dctx->mdmax = 0;
182 }
183
tlsa_free(danetls_record * t)184 static void tlsa_free(danetls_record *t)
185 {
186 if (t == NULL)
187 return;
188 OPENSSL_free(t->data);
189 EVP_PKEY_free(t->spki);
190 OPENSSL_free(t);
191 }
192
dane_final(SSL_DANE * dane)193 static void dane_final(SSL_DANE *dane)
194 {
195 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
196 dane->trecs = NULL;
197
198 sk_X509_pop_free(dane->certs, X509_free);
199 dane->certs = NULL;
200
201 X509_free(dane->mcert);
202 dane->mcert = NULL;
203 dane->mtlsa = NULL;
204 dane->mdpth = -1;
205 dane->pdpth = -1;
206 }
207
208 /*
209 * dane_copy - Copy dane configuration, sans verification state.
210 */
ssl_dane_dup(SSL * to,SSL * from)211 static int ssl_dane_dup(SSL *to, SSL *from)
212 {
213 int num;
214 int i;
215
216 if (!DANETLS_ENABLED(&from->dane))
217 return 1;
218
219 num = sk_danetls_record_num(from->dane.trecs);
220 dane_final(&to->dane);
221 to->dane.flags = from->dane.flags;
222 to->dane.dctx = &to->ctx->dane;
223 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
224
225 if (to->dane.trecs == NULL) {
226 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
227 return 0;
228 }
229
230 for (i = 0; i < num; ++i) {
231 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
232
233 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
234 t->data, t->dlen) <= 0)
235 return 0;
236 }
237 return 1;
238 }
239
dane_mtype_set(struct dane_ctx_st * dctx,const EVP_MD * md,uint8_t mtype,uint8_t ord)240 static int dane_mtype_set(struct dane_ctx_st *dctx,
241 const EVP_MD *md, uint8_t mtype, uint8_t ord)
242 {
243 int i;
244
245 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
246 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
247 return 0;
248 }
249
250 if (mtype > dctx->mdmax) {
251 const EVP_MD **mdevp;
252 uint8_t *mdord;
253 int n = ((int)mtype) + 1;
254
255 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
256 if (mdevp == NULL) {
257 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
258 return -1;
259 }
260 dctx->mdevp = mdevp;
261
262 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
263 if (mdord == NULL) {
264 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
265 return -1;
266 }
267 dctx->mdord = mdord;
268
269 /* Zero-fill any gaps */
270 for (i = dctx->mdmax + 1; i < mtype; ++i) {
271 mdevp[i] = NULL;
272 mdord[i] = 0;
273 }
274
275 dctx->mdmax = mtype;
276 }
277
278 dctx->mdevp[mtype] = md;
279 /* Coerce ordinal of disabled matching types to 0 */
280 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
281
282 return 1;
283 }
284
tlsa_md_get(SSL_DANE * dane,uint8_t mtype)285 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
286 {
287 if (mtype > dane->dctx->mdmax)
288 return NULL;
289 return dane->dctx->mdevp[mtype];
290 }
291
dane_tlsa_add(SSL_DANE * dane,uint8_t usage,uint8_t selector,uint8_t mtype,unsigned const char * data,size_t dlen)292 static int dane_tlsa_add(SSL_DANE *dane,
293 uint8_t usage,
294 uint8_t selector,
295 uint8_t mtype, unsigned const char *data, size_t dlen)
296 {
297 danetls_record *t;
298 const EVP_MD *md = NULL;
299 int ilen = (int)dlen;
300 int i;
301 int num;
302
303 if (dane->trecs == NULL) {
304 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
305 return -1;
306 }
307
308 if (ilen < 0 || dlen != (size_t)ilen) {
309 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
310 return 0;
311 }
312
313 if (usage > DANETLS_USAGE_LAST) {
314 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
315 return 0;
316 }
317
318 if (selector > DANETLS_SELECTOR_LAST) {
319 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
320 return 0;
321 }
322
323 if (mtype != DANETLS_MATCHING_FULL) {
324 md = tlsa_md_get(dane, mtype);
325 if (md == NULL) {
326 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
327 return 0;
328 }
329 }
330
331 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
332 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
333 return 0;
334 }
335 if (!data) {
336 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
337 return 0;
338 }
339
340 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
341 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
342 return -1;
343 }
344
345 t->usage = usage;
346 t->selector = selector;
347 t->mtype = mtype;
348 t->data = OPENSSL_malloc(dlen);
349 if (t->data == NULL) {
350 tlsa_free(t);
351 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
352 return -1;
353 }
354 memcpy(t->data, data, dlen);
355 t->dlen = dlen;
356
357 /* Validate and cache full certificate or public key */
358 if (mtype == DANETLS_MATCHING_FULL) {
359 const unsigned char *p = data;
360 X509 *cert = NULL;
361 EVP_PKEY *pkey = NULL;
362
363 switch (selector) {
364 case DANETLS_SELECTOR_CERT:
365 if (!d2i_X509(&cert, &p, ilen) || p < data ||
366 dlen != (size_t)(p - data)) {
367 tlsa_free(t);
368 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
369 return 0;
370 }
371 if (X509_get0_pubkey(cert) == NULL) {
372 tlsa_free(t);
373 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
374 return 0;
375 }
376
377 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
378 X509_free(cert);
379 break;
380 }
381
382 /*
383 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
384 * records that contain full certificates of trust-anchors that are
385 * not present in the wire chain. For usage PKIX-TA(0), we augment
386 * the chain with untrusted Full(0) certificates from DNS, in case
387 * they are missing from the chain.
388 */
389 if ((dane->certs == NULL &&
390 (dane->certs = sk_X509_new_null()) == NULL) ||
391 !sk_X509_push(dane->certs, cert)) {
392 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
393 X509_free(cert);
394 tlsa_free(t);
395 return -1;
396 }
397 break;
398
399 case DANETLS_SELECTOR_SPKI:
400 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
401 dlen != (size_t)(p - data)) {
402 tlsa_free(t);
403 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
404 return 0;
405 }
406
407 /*
408 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
409 * records that contain full bare keys of trust-anchors that are
410 * not present in the wire chain.
411 */
412 if (usage == DANETLS_USAGE_DANE_TA)
413 t->spki = pkey;
414 else
415 EVP_PKEY_free(pkey);
416 break;
417 }
418 }
419
420 /*-
421 * Find the right insertion point for the new record.
422 *
423 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
424 * they can be processed first, as they require no chain building, and no
425 * expiration or hostname checks. Because DANE-EE(3) is numerically
426 * largest, this is accomplished via descending sort by "usage".
427 *
428 * We also sort in descending order by matching ordinal to simplify
429 * the implementation of digest agility in the verification code.
430 *
431 * The choice of order for the selector is not significant, so we
432 * use the same descending order for consistency.
433 */
434 num = sk_danetls_record_num(dane->trecs);
435 for (i = 0; i < num; ++i) {
436 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
437
438 if (rec->usage > usage)
439 continue;
440 if (rec->usage < usage)
441 break;
442 if (rec->selector > selector)
443 continue;
444 if (rec->selector < selector)
445 break;
446 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
447 continue;
448 break;
449 }
450
451 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
452 tlsa_free(t);
453 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
454 return -1;
455 }
456 dane->umask |= DANETLS_USAGE_BIT(usage);
457
458 return 1;
459 }
460
461 /*
462 * Return 0 if there is only one version configured and it was disabled
463 * at configure time. Return 1 otherwise.
464 */
ssl_check_allowed_versions(int min_version,int max_version)465 static int ssl_check_allowed_versions(int min_version, int max_version)
466 {
467 int minisdtls = 0, maxisdtls = 0;
468
469 /* Figure out if we're doing DTLS versions or TLS versions */
470 if (min_version == DTLS1_BAD_VER
471 || min_version >> 8 == DTLS1_VERSION_MAJOR)
472 minisdtls = 1;
473 if (max_version == DTLS1_BAD_VER
474 || max_version >> 8 == DTLS1_VERSION_MAJOR)
475 maxisdtls = 1;
476 /* A wildcard version of 0 could be DTLS or TLS. */
477 if ((minisdtls && !maxisdtls && max_version != 0)
478 || (maxisdtls && !minisdtls && min_version != 0)) {
479 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
480 return 0;
481 }
482
483 if (minisdtls || maxisdtls) {
484 /* Do DTLS version checks. */
485 if (min_version == 0)
486 /* Ignore DTLS1_BAD_VER */
487 min_version = DTLS1_VERSION;
488 if (max_version == 0)
489 max_version = DTLS1_2_VERSION;
490 #ifdef OPENSSL_NO_DTLS1_2
491 if (max_version == DTLS1_2_VERSION)
492 max_version = DTLS1_VERSION;
493 #endif
494 #ifdef OPENSSL_NO_DTLS1
495 if (min_version == DTLS1_VERSION)
496 min_version = DTLS1_2_VERSION;
497 #endif
498 /* Done massaging versions; do the check. */
499 if (0
500 #ifdef OPENSSL_NO_DTLS1
501 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
502 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
503 #endif
504 #ifdef OPENSSL_NO_DTLS1_2
505 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
506 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
507 #endif
508 )
509 return 0;
510 } else {
511 /* Regular TLS version checks. */
512 if (min_version == 0)
513 min_version = SSL3_VERSION;
514 if (max_version == 0)
515 max_version = TLS1_3_VERSION;
516 #ifdef OPENSSL_NO_TLS1_3
517 if (max_version == TLS1_3_VERSION)
518 max_version = TLS1_2_VERSION;
519 #endif
520 #ifdef OPENSSL_NO_TLS1_2
521 if (max_version == TLS1_2_VERSION)
522 max_version = TLS1_1_VERSION;
523 #endif
524 #ifdef OPENSSL_NO_TLS1_1
525 if (max_version == TLS1_1_VERSION)
526 max_version = TLS1_VERSION;
527 #endif
528 #ifdef OPENSSL_NO_TLS1
529 if (max_version == TLS1_VERSION)
530 max_version = SSL3_VERSION;
531 #endif
532 #ifdef OPENSSL_NO_SSL3
533 if (min_version == SSL3_VERSION)
534 min_version = TLS1_VERSION;
535 #endif
536 #ifdef OPENSSL_NO_TLS1
537 if (min_version == TLS1_VERSION)
538 min_version = TLS1_1_VERSION;
539 #endif
540 #ifdef OPENSSL_NO_TLS1_1
541 if (min_version == TLS1_1_VERSION)
542 min_version = TLS1_2_VERSION;
543 #endif
544 #ifdef OPENSSL_NO_TLS1_2
545 if (min_version == TLS1_2_VERSION)
546 min_version = TLS1_3_VERSION;
547 #endif
548 /* Done massaging versions; do the check. */
549 if (0
550 #ifdef OPENSSL_NO_SSL3
551 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
552 #endif
553 #ifdef OPENSSL_NO_TLS1
554 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
555 #endif
556 #ifdef OPENSSL_NO_TLS1_1
557 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
558 #endif
559 #ifdef OPENSSL_NO_TLS1_2
560 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
561 #endif
562 #ifdef OPENSSL_NO_TLS1_3
563 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
564 #endif
565 )
566 return 0;
567 }
568 return 1;
569 }
570
clear_ciphers(SSL * s)571 static void clear_ciphers(SSL *s)
572 {
573 /* clear the current cipher */
574 ssl_clear_cipher_ctx(s);
575 ssl_clear_hash_ctx(&s->read_hash);
576 ssl_clear_hash_ctx(&s->write_hash);
577 }
578
SSL_clear(SSL * s)579 int SSL_clear(SSL *s)
580 {
581 if (s->method == NULL) {
582 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
583 return 0;
584 }
585
586 if (ssl_clear_bad_session(s)) {
587 SSL_SESSION_free(s->session);
588 s->session = NULL;
589 }
590 SSL_SESSION_free(s->psksession);
591 s->psksession = NULL;
592 OPENSSL_free(s->psksession_id);
593 s->psksession_id = NULL;
594 s->psksession_id_len = 0;
595 s->hello_retry_request = 0;
596 s->sent_tickets = 0;
597
598 s->error = 0;
599 s->hit = 0;
600 s->shutdown = 0;
601
602 if (s->renegotiate) {
603 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
604 return 0;
605 }
606
607 ossl_statem_clear(s);
608
609 s->version = s->method->version;
610 s->client_version = s->version;
611 s->rwstate = SSL_NOTHING;
612
613 BUF_MEM_free(s->init_buf);
614 s->init_buf = NULL;
615 clear_ciphers(s);
616 s->first_packet = 0;
617
618 s->key_update = SSL_KEY_UPDATE_NONE;
619
620 EVP_MD_CTX_free(s->pha_dgst);
621 s->pha_dgst = NULL;
622
623 /* Reset DANE verification result state */
624 s->dane.mdpth = -1;
625 s->dane.pdpth = -1;
626 X509_free(s->dane.mcert);
627 s->dane.mcert = NULL;
628 s->dane.mtlsa = NULL;
629
630 /* Clear the verification result peername */
631 X509_VERIFY_PARAM_move_peername(s->param, NULL);
632
633 /* Clear any shared connection state */
634 OPENSSL_free(s->shared_sigalgs);
635 s->shared_sigalgs = NULL;
636 s->shared_sigalgslen = 0;
637
638 /*
639 * Check to see if we were changed into a different method, if so, revert
640 * back.
641 */
642 if (s->method != s->ctx->method) {
643 s->method->ssl_free(s);
644 s->method = s->ctx->method;
645 if (!s->method->ssl_new(s))
646 return 0;
647 } else {
648 if (!s->method->ssl_clear(s))
649 return 0;
650 }
651
652 RECORD_LAYER_clear(&s->rlayer);
653
654 return 1;
655 }
656
657 /** Used to change an SSL_CTXs default SSL method type */
SSL_CTX_set_ssl_version(SSL_CTX * ctx,const SSL_METHOD * meth)658 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
659 {
660 STACK_OF(SSL_CIPHER) *sk;
661
662 ctx->method = meth;
663
664 if (!SSL_CTX_set_ciphersuites(ctx, TLS_DEFAULT_CIPHERSUITES)) {
665 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
666 return 0;
667 }
668 sk = ssl_create_cipher_list(ctx->method,
669 ctx->tls13_ciphersuites,
670 &(ctx->cipher_list),
671 &(ctx->cipher_list_by_id),
672 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
673 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
674 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
675 return 0;
676 }
677 return 1;
678 }
679
SSL_new(SSL_CTX * ctx)680 SSL *SSL_new(SSL_CTX *ctx)
681 {
682 SSL *s;
683
684 if (ctx == NULL) {
685 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
686 return NULL;
687 }
688 if (ctx->method == NULL) {
689 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
690 return NULL;
691 }
692
693 s = OPENSSL_zalloc(sizeof(*s));
694 if (s == NULL)
695 goto err;
696
697 s->references = 1;
698 s->lock = CRYPTO_THREAD_lock_new();
699 if (s->lock == NULL) {
700 OPENSSL_free(s);
701 s = NULL;
702 goto err;
703 }
704
705 RECORD_LAYER_init(&s->rlayer, s);
706
707 s->options = ctx->options;
708 s->dane.flags = ctx->dane.flags;
709 s->min_proto_version = ctx->min_proto_version;
710 s->max_proto_version = ctx->max_proto_version;
711 s->mode = ctx->mode;
712 s->max_cert_list = ctx->max_cert_list;
713 s->max_early_data = ctx->max_early_data;
714 s->recv_max_early_data = ctx->recv_max_early_data;
715 s->num_tickets = ctx->num_tickets;
716 s->pha_enabled = ctx->pha_enabled;
717
718 /* Shallow copy of the ciphersuites stack */
719 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
720 if (s->tls13_ciphersuites == NULL)
721 goto err;
722
723 /*
724 * Earlier library versions used to copy the pointer to the CERT, not
725 * its contents; only when setting new parameters for the per-SSL
726 * copy, ssl_cert_new would be called (and the direct reference to
727 * the per-SSL_CTX settings would be lost, but those still were
728 * indirectly accessed for various purposes, and for that reason they
729 * used to be known as s->ctx->default_cert). Now we don't look at the
730 * SSL_CTX's CERT after having duplicated it once.
731 */
732 s->cert = ssl_cert_dup(ctx->cert);
733 if (s->cert == NULL)
734 goto err;
735
736 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
737 s->msg_callback = ctx->msg_callback;
738 s->msg_callback_arg = ctx->msg_callback_arg;
739 s->verify_mode = ctx->verify_mode;
740 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
741 s->record_padding_cb = ctx->record_padding_cb;
742 s->record_padding_arg = ctx->record_padding_arg;
743 s->block_padding = ctx->block_padding;
744 s->sid_ctx_length = ctx->sid_ctx_length;
745 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
746 goto err;
747 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
748 s->verify_callback = ctx->default_verify_callback;
749 s->generate_session_id = ctx->generate_session_id;
750
751 s->param = X509_VERIFY_PARAM_new();
752 if (s->param == NULL)
753 goto err;
754 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
755 s->quiet_shutdown = ctx->quiet_shutdown;
756
757 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
758 s->max_send_fragment = ctx->max_send_fragment;
759 s->split_send_fragment = ctx->split_send_fragment;
760 s->max_pipelines = ctx->max_pipelines;
761 if (s->max_pipelines > 1)
762 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
763 if (ctx->default_read_buf_len > 0)
764 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
765
766 SSL_CTX_up_ref(ctx);
767 s->ctx = ctx;
768 s->ext.debug_cb = 0;
769 s->ext.debug_arg = NULL;
770 s->ext.ticket_expected = 0;
771 s->ext.status_type = ctx->ext.status_type;
772 s->ext.status_expected = 0;
773 s->ext.ocsp.ids = NULL;
774 s->ext.ocsp.exts = NULL;
775 s->ext.ocsp.resp = NULL;
776 s->ext.ocsp.resp_len = 0;
777 SSL_CTX_up_ref(ctx);
778 s->session_ctx = ctx;
779 #ifndef OPENSSL_NO_EC
780 if (ctx->ext.ecpointformats) {
781 s->ext.ecpointformats =
782 OPENSSL_memdup(ctx->ext.ecpointformats,
783 ctx->ext.ecpointformats_len);
784 if (!s->ext.ecpointformats) {
785 s->ext.ecpointformats_len = 0;
786 goto err;
787 }
788 s->ext.ecpointformats_len =
789 ctx->ext.ecpointformats_len;
790 }
791 if (ctx->ext.supportedgroups) {
792 s->ext.supportedgroups =
793 OPENSSL_memdup(ctx->ext.supportedgroups,
794 ctx->ext.supportedgroups_len
795 * sizeof(*ctx->ext.supportedgroups));
796 if (!s->ext.supportedgroups) {
797 s->ext.supportedgroups_len = 0;
798 goto err;
799 }
800 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
801 }
802 #endif
803 #ifndef OPENSSL_NO_NEXTPROTONEG
804 s->ext.npn = NULL;
805 #endif
806
807 if (s->ctx->ext.alpn) {
808 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
809 if (s->ext.alpn == NULL) {
810 s->ext.alpn_len = 0;
811 goto err;
812 }
813 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
814 s->ext.alpn_len = s->ctx->ext.alpn_len;
815 }
816
817 s->verified_chain = NULL;
818 s->verify_result = X509_V_OK;
819
820 s->default_passwd_callback = ctx->default_passwd_callback;
821 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
822
823 s->method = ctx->method;
824
825 s->key_update = SSL_KEY_UPDATE_NONE;
826
827 s->allow_early_data_cb = ctx->allow_early_data_cb;
828 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
829
830 if (!s->method->ssl_new(s))
831 goto err;
832
833 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
834
835 if (!SSL_clear(s))
836 goto err;
837
838 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
839 goto err;
840
841 #ifndef OPENSSL_NO_PSK
842 s->psk_client_callback = ctx->psk_client_callback;
843 s->psk_server_callback = ctx->psk_server_callback;
844 #endif
845 s->psk_find_session_cb = ctx->psk_find_session_cb;
846 s->psk_use_session_cb = ctx->psk_use_session_cb;
847
848 s->job = NULL;
849
850 #ifndef OPENSSL_NO_CT
851 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
852 ctx->ct_validation_callback_arg))
853 goto err;
854 #endif
855
856 return s;
857 err:
858 SSL_free(s);
859 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
860 return NULL;
861 }
862
SSL_is_dtls(const SSL * s)863 int SSL_is_dtls(const SSL *s)
864 {
865 return SSL_IS_DTLS(s) ? 1 : 0;
866 }
867
SSL_up_ref(SSL * s)868 int SSL_up_ref(SSL *s)
869 {
870 int i;
871
872 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
873 return 0;
874
875 REF_PRINT_COUNT("SSL", s);
876 REF_ASSERT_ISNT(i < 2);
877 return ((i > 1) ? 1 : 0);
878 }
879
SSL_CTX_set_session_id_context(SSL_CTX * ctx,const unsigned char * sid_ctx,unsigned int sid_ctx_len)880 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
881 unsigned int sid_ctx_len)
882 {
883 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
884 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
885 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
886 return 0;
887 }
888 ctx->sid_ctx_length = sid_ctx_len;
889 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
890
891 return 1;
892 }
893
SSL_set_session_id_context(SSL * ssl,const unsigned char * sid_ctx,unsigned int sid_ctx_len)894 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
895 unsigned int sid_ctx_len)
896 {
897 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
898 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
899 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
900 return 0;
901 }
902 ssl->sid_ctx_length = sid_ctx_len;
903 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
904
905 return 1;
906 }
907
SSL_CTX_set_generate_session_id(SSL_CTX * ctx,GEN_SESSION_CB cb)908 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
909 {
910 CRYPTO_THREAD_write_lock(ctx->lock);
911 ctx->generate_session_id = cb;
912 CRYPTO_THREAD_unlock(ctx->lock);
913 return 1;
914 }
915
SSL_set_generate_session_id(SSL * ssl,GEN_SESSION_CB cb)916 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
917 {
918 CRYPTO_THREAD_write_lock(ssl->lock);
919 ssl->generate_session_id = cb;
920 CRYPTO_THREAD_unlock(ssl->lock);
921 return 1;
922 }
923
SSL_has_matching_session_id(const SSL * ssl,const unsigned char * id,unsigned int id_len)924 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
925 unsigned int id_len)
926 {
927 /*
928 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
929 * we can "construct" a session to give us the desired check - i.e. to
930 * find if there's a session in the hash table that would conflict with
931 * any new session built out of this id/id_len and the ssl_version in use
932 * by this SSL.
933 */
934 SSL_SESSION r, *p;
935
936 if (id_len > sizeof(r.session_id))
937 return 0;
938
939 r.ssl_version = ssl->version;
940 r.session_id_length = id_len;
941 memcpy(r.session_id, id, id_len);
942
943 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
944 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
945 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
946 return (p != NULL);
947 }
948
SSL_CTX_set_purpose(SSL_CTX * s,int purpose)949 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
950 {
951 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
952 }
953
SSL_set_purpose(SSL * s,int purpose)954 int SSL_set_purpose(SSL *s, int purpose)
955 {
956 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
957 }
958
SSL_CTX_set_trust(SSL_CTX * s,int trust)959 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
960 {
961 return X509_VERIFY_PARAM_set_trust(s->param, trust);
962 }
963
SSL_set_trust(SSL * s,int trust)964 int SSL_set_trust(SSL *s, int trust)
965 {
966 return X509_VERIFY_PARAM_set_trust(s->param, trust);
967 }
968
SSL_set1_host(SSL * s,const char * hostname)969 int SSL_set1_host(SSL *s, const char *hostname)
970 {
971 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
972 }
973
SSL_add1_host(SSL * s,const char * hostname)974 int SSL_add1_host(SSL *s, const char *hostname)
975 {
976 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
977 }
978
SSL_set_hostflags(SSL * s,unsigned int flags)979 void SSL_set_hostflags(SSL *s, unsigned int flags)
980 {
981 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
982 }
983
SSL_get0_peername(SSL * s)984 const char *SSL_get0_peername(SSL *s)
985 {
986 return X509_VERIFY_PARAM_get0_peername(s->param);
987 }
988
SSL_CTX_dane_enable(SSL_CTX * ctx)989 int SSL_CTX_dane_enable(SSL_CTX *ctx)
990 {
991 return dane_ctx_enable(&ctx->dane);
992 }
993
SSL_CTX_dane_set_flags(SSL_CTX * ctx,unsigned long flags)994 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
995 {
996 unsigned long orig = ctx->dane.flags;
997
998 ctx->dane.flags |= flags;
999 return orig;
1000 }
1001
SSL_CTX_dane_clear_flags(SSL_CTX * ctx,unsigned long flags)1002 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1003 {
1004 unsigned long orig = ctx->dane.flags;
1005
1006 ctx->dane.flags &= ~flags;
1007 return orig;
1008 }
1009
SSL_dane_enable(SSL * s,const char * basedomain)1010 int SSL_dane_enable(SSL *s, const char *basedomain)
1011 {
1012 SSL_DANE *dane = &s->dane;
1013
1014 if (s->ctx->dane.mdmax == 0) {
1015 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1016 return 0;
1017 }
1018 if (dane->trecs != NULL) {
1019 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
1020 return 0;
1021 }
1022
1023 /*
1024 * Default SNI name. This rejects empty names, while set1_host below
1025 * accepts them and disables host name checks. To avoid side-effects with
1026 * invalid input, set the SNI name first.
1027 */
1028 if (s->ext.hostname == NULL) {
1029 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1030 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1031 return -1;
1032 }
1033 }
1034
1035 /* Primary RFC6125 reference identifier */
1036 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
1037 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1038 return -1;
1039 }
1040
1041 dane->mdpth = -1;
1042 dane->pdpth = -1;
1043 dane->dctx = &s->ctx->dane;
1044 dane->trecs = sk_danetls_record_new_null();
1045
1046 if (dane->trecs == NULL) {
1047 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
1048 return -1;
1049 }
1050 return 1;
1051 }
1052
SSL_dane_set_flags(SSL * ssl,unsigned long flags)1053 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1054 {
1055 unsigned long orig = ssl->dane.flags;
1056
1057 ssl->dane.flags |= flags;
1058 return orig;
1059 }
1060
SSL_dane_clear_flags(SSL * ssl,unsigned long flags)1061 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1062 {
1063 unsigned long orig = ssl->dane.flags;
1064
1065 ssl->dane.flags &= ~flags;
1066 return orig;
1067 }
1068
SSL_get0_dane_authority(SSL * s,X509 ** mcert,EVP_PKEY ** mspki)1069 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1070 {
1071 SSL_DANE *dane = &s->dane;
1072
1073 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1074 return -1;
1075 if (dane->mtlsa) {
1076 if (mcert)
1077 *mcert = dane->mcert;
1078 if (mspki)
1079 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1080 }
1081 return dane->mdpth;
1082 }
1083
SSL_get0_dane_tlsa(SSL * s,uint8_t * usage,uint8_t * selector,uint8_t * mtype,unsigned const char ** data,size_t * dlen)1084 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1085 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1086 {
1087 SSL_DANE *dane = &s->dane;
1088
1089 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1090 return -1;
1091 if (dane->mtlsa) {
1092 if (usage)
1093 *usage = dane->mtlsa->usage;
1094 if (selector)
1095 *selector = dane->mtlsa->selector;
1096 if (mtype)
1097 *mtype = dane->mtlsa->mtype;
1098 if (data)
1099 *data = dane->mtlsa->data;
1100 if (dlen)
1101 *dlen = dane->mtlsa->dlen;
1102 }
1103 return dane->mdpth;
1104 }
1105
SSL_get0_dane(SSL * s)1106 SSL_DANE *SSL_get0_dane(SSL *s)
1107 {
1108 return &s->dane;
1109 }
1110
SSL_dane_tlsa_add(SSL * s,uint8_t usage,uint8_t selector,uint8_t mtype,unsigned const char * data,size_t dlen)1111 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1112 uint8_t mtype, unsigned const char *data, size_t dlen)
1113 {
1114 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1115 }
1116
SSL_CTX_dane_mtype_set(SSL_CTX * ctx,const EVP_MD * md,uint8_t mtype,uint8_t ord)1117 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1118 uint8_t ord)
1119 {
1120 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1121 }
1122
SSL_CTX_set1_param(SSL_CTX * ctx,X509_VERIFY_PARAM * vpm)1123 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1124 {
1125 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1126 }
1127
SSL_set1_param(SSL * ssl,X509_VERIFY_PARAM * vpm)1128 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1129 {
1130 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1131 }
1132
SSL_CTX_get0_param(SSL_CTX * ctx)1133 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1134 {
1135 return ctx->param;
1136 }
1137
SSL_get0_param(SSL * ssl)1138 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1139 {
1140 return ssl->param;
1141 }
1142
SSL_certs_clear(SSL * s)1143 void SSL_certs_clear(SSL *s)
1144 {
1145 ssl_cert_clear_certs(s->cert);
1146 }
1147
SSL_free(SSL * s)1148 void SSL_free(SSL *s)
1149 {
1150 int i;
1151
1152 if (s == NULL)
1153 return;
1154 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1155 REF_PRINT_COUNT("SSL", s);
1156 if (i > 0)
1157 return;
1158 REF_ASSERT_ISNT(i < 0);
1159
1160 X509_VERIFY_PARAM_free(s->param);
1161 dane_final(&s->dane);
1162 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1163
1164 RECORD_LAYER_release(&s->rlayer);
1165
1166 /* Ignore return value */
1167 ssl_free_wbio_buffer(s);
1168
1169 BIO_free_all(s->wbio);
1170 s->wbio = NULL;
1171 BIO_free_all(s->rbio);
1172 s->rbio = NULL;
1173
1174 BUF_MEM_free(s->init_buf);
1175
1176 /* add extra stuff */
1177 sk_SSL_CIPHER_free(s->cipher_list);
1178 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1179 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1180 sk_SSL_CIPHER_free(s->peer_ciphers);
1181
1182 /* Make the next call work :-) */
1183 if (s->session != NULL) {
1184 ssl_clear_bad_session(s);
1185 SSL_SESSION_free(s->session);
1186 }
1187 SSL_SESSION_free(s->psksession);
1188 OPENSSL_free(s->psksession_id);
1189
1190 clear_ciphers(s);
1191
1192 ssl_cert_free(s->cert);
1193 OPENSSL_free(s->shared_sigalgs);
1194 /* Free up if allocated */
1195
1196 OPENSSL_free(s->ext.hostname);
1197 SSL_CTX_free(s->session_ctx);
1198 #ifndef OPENSSL_NO_EC
1199 OPENSSL_free(s->ext.ecpointformats);
1200 OPENSSL_free(s->ext.peer_ecpointformats);
1201 OPENSSL_free(s->ext.supportedgroups);
1202 OPENSSL_free(s->ext.peer_supportedgroups);
1203 #endif /* OPENSSL_NO_EC */
1204 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1205 #ifndef OPENSSL_NO_OCSP
1206 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1207 #endif
1208 #ifndef OPENSSL_NO_CT
1209 SCT_LIST_free(s->scts);
1210 OPENSSL_free(s->ext.scts);
1211 #endif
1212 OPENSSL_free(s->ext.ocsp.resp);
1213 OPENSSL_free(s->ext.alpn);
1214 OPENSSL_free(s->ext.tls13_cookie);
1215 if (s->clienthello != NULL)
1216 OPENSSL_free(s->clienthello->pre_proc_exts);
1217 OPENSSL_free(s->clienthello);
1218 OPENSSL_free(s->pha_context);
1219 EVP_MD_CTX_free(s->pha_dgst);
1220
1221 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1222 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1223
1224 sk_X509_pop_free(s->verified_chain, X509_free);
1225
1226 if (s->method != NULL)
1227 s->method->ssl_free(s);
1228
1229 SSL_CTX_free(s->ctx);
1230
1231 ASYNC_WAIT_CTX_free(s->waitctx);
1232
1233 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1234 OPENSSL_free(s->ext.npn);
1235 #endif
1236
1237 #ifndef OPENSSL_NO_SRTP
1238 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1239 #endif
1240
1241 CRYPTO_THREAD_lock_free(s->lock);
1242
1243 OPENSSL_free(s);
1244 }
1245
SSL_set0_rbio(SSL * s,BIO * rbio)1246 void SSL_set0_rbio(SSL *s, BIO *rbio)
1247 {
1248 BIO_free_all(s->rbio);
1249 s->rbio = rbio;
1250 }
1251
SSL_set0_wbio(SSL * s,BIO * wbio)1252 void SSL_set0_wbio(SSL *s, BIO *wbio)
1253 {
1254 /*
1255 * If the output buffering BIO is still in place, remove it
1256 */
1257 if (s->bbio != NULL)
1258 s->wbio = BIO_pop(s->wbio);
1259
1260 BIO_free_all(s->wbio);
1261 s->wbio = wbio;
1262
1263 /* Re-attach |bbio| to the new |wbio|. */
1264 if (s->bbio != NULL)
1265 s->wbio = BIO_push(s->bbio, s->wbio);
1266 }
1267
SSL_set_bio(SSL * s,BIO * rbio,BIO * wbio)1268 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1269 {
1270 /*
1271 * For historical reasons, this function has many different cases in
1272 * ownership handling.
1273 */
1274
1275 /* If nothing has changed, do nothing */
1276 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1277 return;
1278
1279 /*
1280 * If the two arguments are equal then one fewer reference is granted by the
1281 * caller than we want to take
1282 */
1283 if (rbio != NULL && rbio == wbio)
1284 BIO_up_ref(rbio);
1285
1286 /*
1287 * If only the wbio is changed only adopt one reference.
1288 */
1289 if (rbio == SSL_get_rbio(s)) {
1290 SSL_set0_wbio(s, wbio);
1291 return;
1292 }
1293 /*
1294 * There is an asymmetry here for historical reasons. If only the rbio is
1295 * changed AND the rbio and wbio were originally different, then we only
1296 * adopt one reference.
1297 */
1298 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1299 SSL_set0_rbio(s, rbio);
1300 return;
1301 }
1302
1303 /* Otherwise, adopt both references. */
1304 SSL_set0_rbio(s, rbio);
1305 SSL_set0_wbio(s, wbio);
1306 }
1307
SSL_get_rbio(const SSL * s)1308 BIO *SSL_get_rbio(const SSL *s)
1309 {
1310 return s->rbio;
1311 }
1312
SSL_get_wbio(const SSL * s)1313 BIO *SSL_get_wbio(const SSL *s)
1314 {
1315 if (s->bbio != NULL) {
1316 /*
1317 * If |bbio| is active, the true caller-configured BIO is its
1318 * |next_bio|.
1319 */
1320 return BIO_next(s->bbio);
1321 }
1322 return s->wbio;
1323 }
1324
SSL_get_fd(const SSL * s)1325 int SSL_get_fd(const SSL *s)
1326 {
1327 return SSL_get_rfd(s);
1328 }
1329
SSL_get_rfd(const SSL * s)1330 int SSL_get_rfd(const SSL *s)
1331 {
1332 int ret = -1;
1333 BIO *b, *r;
1334
1335 b = SSL_get_rbio(s);
1336 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1337 if (r != NULL)
1338 BIO_get_fd(r, &ret);
1339 return ret;
1340 }
1341
SSL_get_wfd(const SSL * s)1342 int SSL_get_wfd(const SSL *s)
1343 {
1344 int ret = -1;
1345 BIO *b, *r;
1346
1347 b = SSL_get_wbio(s);
1348 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1349 if (r != NULL)
1350 BIO_get_fd(r, &ret);
1351 return ret;
1352 }
1353
1354 #ifndef OPENSSL_NO_SOCK
SSL_set_fd(SSL * s,int fd)1355 int SSL_set_fd(SSL *s, int fd)
1356 {
1357 int ret = 0;
1358 BIO *bio = NULL;
1359
1360 bio = BIO_new(BIO_s_socket());
1361
1362 if (bio == NULL) {
1363 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1364 goto err;
1365 }
1366 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1367 SSL_set_bio(s, bio, bio);
1368 #ifndef OPENSSL_NO_KTLS
1369 /*
1370 * The new socket is created successfully regardless of ktls_enable.
1371 * ktls_enable doesn't change any functionality of the socket, except
1372 * changing the setsockopt to enable the processing of ktls_start.
1373 * Thus, it is not a problem to call it for non-TLS sockets.
1374 */
1375 ktls_enable(fd);
1376 #endif /* OPENSSL_NO_KTLS */
1377 ret = 1;
1378 err:
1379 return ret;
1380 }
1381
SSL_set_wfd(SSL * s,int fd)1382 int SSL_set_wfd(SSL *s, int fd)
1383 {
1384 BIO *rbio = SSL_get_rbio(s);
1385
1386 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1387 || (int)BIO_get_fd(rbio, NULL) != fd) {
1388 BIO *bio = BIO_new(BIO_s_socket());
1389
1390 if (bio == NULL) {
1391 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1392 return 0;
1393 }
1394 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1395 SSL_set0_wbio(s, bio);
1396 #ifndef OPENSSL_NO_KTLS
1397 /*
1398 * The new socket is created successfully regardless of ktls_enable.
1399 * ktls_enable doesn't change any functionality of the socket, except
1400 * changing the setsockopt to enable the processing of ktls_start.
1401 * Thus, it is not a problem to call it for non-TLS sockets.
1402 */
1403 ktls_enable(fd);
1404 #endif /* OPENSSL_NO_KTLS */
1405 } else {
1406 BIO_up_ref(rbio);
1407 SSL_set0_wbio(s, rbio);
1408 }
1409 return 1;
1410 }
1411
SSL_set_rfd(SSL * s,int fd)1412 int SSL_set_rfd(SSL *s, int fd)
1413 {
1414 BIO *wbio = SSL_get_wbio(s);
1415
1416 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1417 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1418 BIO *bio = BIO_new(BIO_s_socket());
1419
1420 if (bio == NULL) {
1421 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1422 return 0;
1423 }
1424 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1425 SSL_set0_rbio(s, bio);
1426 } else {
1427 BIO_up_ref(wbio);
1428 SSL_set0_rbio(s, wbio);
1429 }
1430
1431 return 1;
1432 }
1433 #endif
1434
1435 /* return length of latest Finished message we sent, copy to 'buf' */
SSL_get_finished(const SSL * s,void * buf,size_t count)1436 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1437 {
1438 size_t ret = 0;
1439
1440 if (s->s3 != NULL) {
1441 ret = s->s3->tmp.finish_md_len;
1442 if (count > ret)
1443 count = ret;
1444 memcpy(buf, s->s3->tmp.finish_md, count);
1445 }
1446 return ret;
1447 }
1448
1449 /* return length of latest Finished message we expected, copy to 'buf' */
SSL_get_peer_finished(const SSL * s,void * buf,size_t count)1450 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1451 {
1452 size_t ret = 0;
1453
1454 if (s->s3 != NULL) {
1455 ret = s->s3->tmp.peer_finish_md_len;
1456 if (count > ret)
1457 count = ret;
1458 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1459 }
1460 return ret;
1461 }
1462
SSL_get_verify_mode(const SSL * s)1463 int SSL_get_verify_mode(const SSL *s)
1464 {
1465 return s->verify_mode;
1466 }
1467
SSL_get_verify_depth(const SSL * s)1468 int SSL_get_verify_depth(const SSL *s)
1469 {
1470 return X509_VERIFY_PARAM_get_depth(s->param);
1471 }
1472
SSL_get_verify_callback(const SSL * s)1473 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1474 return s->verify_callback;
1475 }
1476
SSL_CTX_get_verify_mode(const SSL_CTX * ctx)1477 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1478 {
1479 return ctx->verify_mode;
1480 }
1481
SSL_CTX_get_verify_depth(const SSL_CTX * ctx)1482 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1483 {
1484 return X509_VERIFY_PARAM_get_depth(ctx->param);
1485 }
1486
SSL_CTX_get_verify_callback(const SSL_CTX * ctx)1487 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1488 return ctx->default_verify_callback;
1489 }
1490
SSL_set_verify(SSL * s,int mode,int (* callback)(int ok,X509_STORE_CTX * ctx))1491 void SSL_set_verify(SSL *s, int mode,
1492 int (*callback) (int ok, X509_STORE_CTX *ctx))
1493 {
1494 s->verify_mode = mode;
1495 if (callback != NULL)
1496 s->verify_callback = callback;
1497 }
1498
SSL_set_verify_depth(SSL * s,int depth)1499 void SSL_set_verify_depth(SSL *s, int depth)
1500 {
1501 X509_VERIFY_PARAM_set_depth(s->param, depth);
1502 }
1503
SSL_set_read_ahead(SSL * s,int yes)1504 void SSL_set_read_ahead(SSL *s, int yes)
1505 {
1506 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1507 }
1508
SSL_get_read_ahead(const SSL * s)1509 int SSL_get_read_ahead(const SSL *s)
1510 {
1511 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1512 }
1513
SSL_pending(const SSL * s)1514 int SSL_pending(const SSL *s)
1515 {
1516 size_t pending = s->method->ssl_pending(s);
1517
1518 /*
1519 * SSL_pending cannot work properly if read-ahead is enabled
1520 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1521 * impossible to fix since SSL_pending cannot report errors that may be
1522 * observed while scanning the new data. (Note that SSL_pending() is
1523 * often used as a boolean value, so we'd better not return -1.)
1524 *
1525 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1526 * we just return INT_MAX.
1527 */
1528 return pending < INT_MAX ? (int)pending : INT_MAX;
1529 }
1530
SSL_has_pending(const SSL * s)1531 int SSL_has_pending(const SSL *s)
1532 {
1533 /*
1534 * Similar to SSL_pending() but returns a 1 to indicate that we have
1535 * unprocessed data available or 0 otherwise (as opposed to the number of
1536 * bytes available). Unlike SSL_pending() this will take into account
1537 * read_ahead data. A 1 return simply indicates that we have unprocessed
1538 * data. That data may not result in any application data, or we may fail
1539 * to parse the records for some reason.
1540 */
1541 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1542 return 1;
1543
1544 return RECORD_LAYER_read_pending(&s->rlayer);
1545 }
1546
SSL_get_peer_certificate(const SSL * s)1547 X509 *SSL_get_peer_certificate(const SSL *s)
1548 {
1549 X509 *r;
1550
1551 if ((s == NULL) || (s->session == NULL))
1552 r = NULL;
1553 else
1554 r = s->session->peer;
1555
1556 if (r == NULL)
1557 return r;
1558
1559 X509_up_ref(r);
1560
1561 return r;
1562 }
1563
STACK_OF(X509)1564 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1565 {
1566 STACK_OF(X509) *r;
1567
1568 if ((s == NULL) || (s->session == NULL))
1569 r = NULL;
1570 else
1571 r = s->session->peer_chain;
1572
1573 /*
1574 * If we are a client, cert_chain includes the peer's own certificate; if
1575 * we are a server, it does not.
1576 */
1577
1578 return r;
1579 }
1580
1581 /*
1582 * Now in theory, since the calling process own 't' it should be safe to
1583 * modify. We need to be able to read f without being hassled
1584 */
SSL_copy_session_id(SSL * t,const SSL * f)1585 int SSL_copy_session_id(SSL *t, const SSL *f)
1586 {
1587 int i;
1588 /* Do we need to to SSL locking? */
1589 if (!SSL_set_session(t, SSL_get_session(f))) {
1590 return 0;
1591 }
1592
1593 /*
1594 * what if we are setup for one protocol version but want to talk another
1595 */
1596 if (t->method != f->method) {
1597 t->method->ssl_free(t);
1598 t->method = f->method;
1599 if (t->method->ssl_new(t) == 0)
1600 return 0;
1601 }
1602
1603 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1604 ssl_cert_free(t->cert);
1605 t->cert = f->cert;
1606 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1607 return 0;
1608 }
1609
1610 return 1;
1611 }
1612
1613 /* Fix this so it checks all the valid key/cert options */
SSL_CTX_check_private_key(const SSL_CTX * ctx)1614 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1615 {
1616 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1617 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1618 return 0;
1619 }
1620 if (ctx->cert->key->privatekey == NULL) {
1621 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1622 return 0;
1623 }
1624 return X509_check_private_key
1625 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1626 }
1627
1628 /* Fix this function so that it takes an optional type parameter */
SSL_check_private_key(const SSL * ssl)1629 int SSL_check_private_key(const SSL *ssl)
1630 {
1631 if (ssl == NULL) {
1632 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1633 return 0;
1634 }
1635 if (ssl->cert->key->x509 == NULL) {
1636 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1637 return 0;
1638 }
1639 if (ssl->cert->key->privatekey == NULL) {
1640 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1641 return 0;
1642 }
1643 return X509_check_private_key(ssl->cert->key->x509,
1644 ssl->cert->key->privatekey);
1645 }
1646
SSL_waiting_for_async(SSL * s)1647 int SSL_waiting_for_async(SSL *s)
1648 {
1649 if (s->job)
1650 return 1;
1651
1652 return 0;
1653 }
1654
SSL_get_all_async_fds(SSL * s,OSSL_ASYNC_FD * fds,size_t * numfds)1655 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1656 {
1657 ASYNC_WAIT_CTX *ctx = s->waitctx;
1658
1659 if (ctx == NULL)
1660 return 0;
1661 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1662 }
1663
SSL_get_changed_async_fds(SSL * s,OSSL_ASYNC_FD * addfd,size_t * numaddfds,OSSL_ASYNC_FD * delfd,size_t * numdelfds)1664 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1665 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1666 {
1667 ASYNC_WAIT_CTX *ctx = s->waitctx;
1668
1669 if (ctx == NULL)
1670 return 0;
1671 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1672 numdelfds);
1673 }
1674
SSL_accept(SSL * s)1675 int SSL_accept(SSL *s)
1676 {
1677 if (s->handshake_func == NULL) {
1678 /* Not properly initialized yet */
1679 SSL_set_accept_state(s);
1680 }
1681
1682 return SSL_do_handshake(s);
1683 }
1684
SSL_connect(SSL * s)1685 int SSL_connect(SSL *s)
1686 {
1687 if (s->handshake_func == NULL) {
1688 /* Not properly initialized yet */
1689 SSL_set_connect_state(s);
1690 }
1691
1692 return SSL_do_handshake(s);
1693 }
1694
SSL_get_default_timeout(const SSL * s)1695 long SSL_get_default_timeout(const SSL *s)
1696 {
1697 return s->method->get_timeout();
1698 }
1699
ssl_start_async_job(SSL * s,struct ssl_async_args * args,int (* func)(void *))1700 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1701 int (*func) (void *))
1702 {
1703 int ret;
1704 if (s->waitctx == NULL) {
1705 s->waitctx = ASYNC_WAIT_CTX_new();
1706 if (s->waitctx == NULL)
1707 return -1;
1708 }
1709
1710 s->rwstate = SSL_NOTHING;
1711 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1712 sizeof(struct ssl_async_args))) {
1713 case ASYNC_ERR:
1714 s->rwstate = SSL_NOTHING;
1715 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1716 return -1;
1717 case ASYNC_PAUSE:
1718 s->rwstate = SSL_ASYNC_PAUSED;
1719 return -1;
1720 case ASYNC_NO_JOBS:
1721 s->rwstate = SSL_ASYNC_NO_JOBS;
1722 return -1;
1723 case ASYNC_FINISH:
1724 s->job = NULL;
1725 return ret;
1726 default:
1727 s->rwstate = SSL_NOTHING;
1728 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1729 /* Shouldn't happen */
1730 return -1;
1731 }
1732 }
1733
ssl_io_intern(void * vargs)1734 static int ssl_io_intern(void *vargs)
1735 {
1736 struct ssl_async_args *args;
1737 SSL *s;
1738 void *buf;
1739 size_t num;
1740
1741 args = (struct ssl_async_args *)vargs;
1742 s = args->s;
1743 buf = args->buf;
1744 num = args->num;
1745 switch (args->type) {
1746 case READFUNC:
1747 return args->f.func_read(s, buf, num, &s->asyncrw);
1748 case WRITEFUNC:
1749 return args->f.func_write(s, buf, num, &s->asyncrw);
1750 case OTHERFUNC:
1751 return args->f.func_other(s);
1752 }
1753 return -1;
1754 }
1755
ssl_read_internal(SSL * s,void * buf,size_t num,size_t * readbytes)1756 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1757 {
1758 if (s->handshake_func == NULL) {
1759 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
1760 return -1;
1761 }
1762
1763 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1764 s->rwstate = SSL_NOTHING;
1765 return 0;
1766 }
1767
1768 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1769 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1770 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1771 return 0;
1772 }
1773 /*
1774 * If we are a client and haven't received the ServerHello etc then we
1775 * better do that
1776 */
1777 ossl_statem_check_finish_init(s, 0);
1778
1779 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1780 struct ssl_async_args args;
1781 int ret;
1782
1783 args.s = s;
1784 args.buf = buf;
1785 args.num = num;
1786 args.type = READFUNC;
1787 args.f.func_read = s->method->ssl_read;
1788
1789 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1790 *readbytes = s->asyncrw;
1791 return ret;
1792 } else {
1793 return s->method->ssl_read(s, buf, num, readbytes);
1794 }
1795 }
1796
SSL_read(SSL * s,void * buf,int num)1797 int SSL_read(SSL *s, void *buf, int num)
1798 {
1799 int ret;
1800 size_t readbytes;
1801
1802 if (num < 0) {
1803 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1804 return -1;
1805 }
1806
1807 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1808
1809 /*
1810 * The cast is safe here because ret should be <= INT_MAX because num is
1811 * <= INT_MAX
1812 */
1813 if (ret > 0)
1814 ret = (int)readbytes;
1815
1816 return ret;
1817 }
1818
SSL_read_ex(SSL * s,void * buf,size_t num,size_t * readbytes)1819 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1820 {
1821 int ret = ssl_read_internal(s, buf, num, readbytes);
1822
1823 if (ret < 0)
1824 ret = 0;
1825 return ret;
1826 }
1827
SSL_read_early_data(SSL * s,void * buf,size_t num,size_t * readbytes)1828 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1829 {
1830 int ret;
1831
1832 if (!s->server) {
1833 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1834 return SSL_READ_EARLY_DATA_ERROR;
1835 }
1836
1837 switch (s->early_data_state) {
1838 case SSL_EARLY_DATA_NONE:
1839 if (!SSL_in_before(s)) {
1840 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1841 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1842 return SSL_READ_EARLY_DATA_ERROR;
1843 }
1844 /* fall through */
1845
1846 case SSL_EARLY_DATA_ACCEPT_RETRY:
1847 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1848 ret = SSL_accept(s);
1849 if (ret <= 0) {
1850 /* NBIO or error */
1851 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1852 return SSL_READ_EARLY_DATA_ERROR;
1853 }
1854 /* fall through */
1855
1856 case SSL_EARLY_DATA_READ_RETRY:
1857 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1858 s->early_data_state = SSL_EARLY_DATA_READING;
1859 ret = SSL_read_ex(s, buf, num, readbytes);
1860 /*
1861 * State machine will update early_data_state to
1862 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1863 * message
1864 */
1865 if (ret > 0 || (ret <= 0 && s->early_data_state
1866 != SSL_EARLY_DATA_FINISHED_READING)) {
1867 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1868 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1869 : SSL_READ_EARLY_DATA_ERROR;
1870 }
1871 } else {
1872 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1873 }
1874 *readbytes = 0;
1875 return SSL_READ_EARLY_DATA_FINISH;
1876
1877 default:
1878 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1879 return SSL_READ_EARLY_DATA_ERROR;
1880 }
1881 }
1882
SSL_get_early_data_status(const SSL * s)1883 int SSL_get_early_data_status(const SSL *s)
1884 {
1885 return s->ext.early_data;
1886 }
1887
ssl_peek_internal(SSL * s,void * buf,size_t num,size_t * readbytes)1888 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1889 {
1890 if (s->handshake_func == NULL) {
1891 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
1892 return -1;
1893 }
1894
1895 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1896 return 0;
1897 }
1898 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1899 struct ssl_async_args args;
1900 int ret;
1901
1902 args.s = s;
1903 args.buf = buf;
1904 args.num = num;
1905 args.type = READFUNC;
1906 args.f.func_read = s->method->ssl_peek;
1907
1908 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1909 *readbytes = s->asyncrw;
1910 return ret;
1911 } else {
1912 return s->method->ssl_peek(s, buf, num, readbytes);
1913 }
1914 }
1915
SSL_peek(SSL * s,void * buf,int num)1916 int SSL_peek(SSL *s, void *buf, int num)
1917 {
1918 int ret;
1919 size_t readbytes;
1920
1921 if (num < 0) {
1922 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1923 return -1;
1924 }
1925
1926 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
1927
1928 /*
1929 * The cast is safe here because ret should be <= INT_MAX because num is
1930 * <= INT_MAX
1931 */
1932 if (ret > 0)
1933 ret = (int)readbytes;
1934
1935 return ret;
1936 }
1937
1938
SSL_peek_ex(SSL * s,void * buf,size_t num,size_t * readbytes)1939 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1940 {
1941 int ret = ssl_peek_internal(s, buf, num, readbytes);
1942
1943 if (ret < 0)
1944 ret = 0;
1945 return ret;
1946 }
1947
ssl_write_internal(SSL * s,const void * buf,size_t num,size_t * written)1948 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
1949 {
1950 if (s->handshake_func == NULL) {
1951 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
1952 return -1;
1953 }
1954
1955 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1956 s->rwstate = SSL_NOTHING;
1957 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1958 return -1;
1959 }
1960
1961 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1962 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1963 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
1964 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1965 return 0;
1966 }
1967 /* If we are a client and haven't sent the Finished we better do that */
1968 ossl_statem_check_finish_init(s, 1);
1969
1970 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1971 int ret;
1972 struct ssl_async_args args;
1973
1974 args.s = s;
1975 args.buf = (void *)buf;
1976 args.num = num;
1977 args.type = WRITEFUNC;
1978 args.f.func_write = s->method->ssl_write;
1979
1980 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1981 *written = s->asyncrw;
1982 return ret;
1983 } else {
1984 return s->method->ssl_write(s, buf, num, written);
1985 }
1986 }
1987
SSL_sendfile(SSL * s,int fd,off_t offset,size_t size,int flags)1988 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
1989 {
1990 ossl_ssize_t ret;
1991
1992 if (s->handshake_func == NULL) {
1993 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
1994 return -1;
1995 }
1996
1997 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1998 s->rwstate = SSL_NOTHING;
1999 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_PROTOCOL_IS_SHUTDOWN);
2000 return -1;
2001 }
2002
2003 if (!BIO_get_ktls_send(s->wbio)) {
2004 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2005 return -1;
2006 }
2007
2008 /* If we have an alert to send, lets send it */
2009 if (s->s3->alert_dispatch) {
2010 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2011 if (ret <= 0) {
2012 /* SSLfatal() already called if appropriate */
2013 return ret;
2014 }
2015 /* if it went, fall through and send more stuff */
2016 }
2017
2018 s->rwstate = SSL_WRITING;
2019 if (BIO_flush(s->wbio) <= 0) {
2020 if (!BIO_should_retry(s->wbio)) {
2021 s->rwstate = SSL_NOTHING;
2022 } else {
2023 #ifdef EAGAIN
2024 set_sys_error(EAGAIN);
2025 #endif
2026 }
2027 return -1;
2028 }
2029
2030 #ifdef OPENSSL_NO_KTLS
2031 ERR_raise_data(ERR_LIB_SYS, ERR_R_INTERNAL_ERROR, "calling sendfile()");
2032 return -1;
2033 #else
2034 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2035 if (ret < 0) {
2036 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2037 if ((get_last_sys_error() == EAGAIN) ||
2038 (get_last_sys_error() == EINTR) ||
2039 (get_last_sys_error() == EBUSY))
2040 BIO_set_retry_write(s->wbio);
2041 else
2042 #endif
2043 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2044 return ret;
2045 }
2046 s->rwstate = SSL_NOTHING;
2047 return ret;
2048 #endif
2049 }
2050
SSL_write(SSL * s,const void * buf,int num)2051 int SSL_write(SSL *s, const void *buf, int num)
2052 {
2053 int ret;
2054 size_t written;
2055
2056 if (num < 0) {
2057 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
2058 return -1;
2059 }
2060
2061 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2062
2063 /*
2064 * The cast is safe here because ret should be <= INT_MAX because num is
2065 * <= INT_MAX
2066 */
2067 if (ret > 0)
2068 ret = (int)written;
2069
2070 return ret;
2071 }
2072
SSL_write_ex(SSL * s,const void * buf,size_t num,size_t * written)2073 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2074 {
2075 int ret = ssl_write_internal(s, buf, num, written);
2076
2077 if (ret < 0)
2078 ret = 0;
2079 return ret;
2080 }
2081
SSL_write_early_data(SSL * s,const void * buf,size_t num,size_t * written)2082 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2083 {
2084 int ret, early_data_state;
2085 size_t writtmp;
2086 uint32_t partialwrite;
2087
2088 switch (s->early_data_state) {
2089 case SSL_EARLY_DATA_NONE:
2090 if (s->server
2091 || !SSL_in_before(s)
2092 || ((s->session == NULL || s->session->ext.max_early_data == 0)
2093 && (s->psk_use_session_cb == NULL))) {
2094 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
2095 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2096 return 0;
2097 }
2098 /* fall through */
2099
2100 case SSL_EARLY_DATA_CONNECT_RETRY:
2101 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
2102 ret = SSL_connect(s);
2103 if (ret <= 0) {
2104 /* NBIO or error */
2105 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2106 return 0;
2107 }
2108 /* fall through */
2109
2110 case SSL_EARLY_DATA_WRITE_RETRY:
2111 s->early_data_state = SSL_EARLY_DATA_WRITING;
2112 /*
2113 * We disable partial write for early data because we don't keep track
2114 * of how many bytes we've written between the SSL_write_ex() call and
2115 * the flush if the flush needs to be retried)
2116 */
2117 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2118 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2119 ret = SSL_write_ex(s, buf, num, &writtmp);
2120 s->mode |= partialwrite;
2121 if (!ret) {
2122 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2123 return ret;
2124 }
2125 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2126 /* fall through */
2127
2128 case SSL_EARLY_DATA_WRITE_FLUSH:
2129 /* The buffering BIO is still in place so we need to flush it */
2130 if (statem_flush(s) != 1)
2131 return 0;
2132 *written = num;
2133 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2134 return 1;
2135
2136 case SSL_EARLY_DATA_FINISHED_READING:
2137 case SSL_EARLY_DATA_READ_RETRY:
2138 early_data_state = s->early_data_state;
2139 /* We are a server writing to an unauthenticated client */
2140 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2141 ret = SSL_write_ex(s, buf, num, written);
2142 /* The buffering BIO is still in place */
2143 if (ret)
2144 (void)BIO_flush(s->wbio);
2145 s->early_data_state = early_data_state;
2146 return ret;
2147
2148 default:
2149 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2150 return 0;
2151 }
2152 }
2153
SSL_shutdown(SSL * s)2154 int SSL_shutdown(SSL *s)
2155 {
2156 /*
2157 * Note that this function behaves differently from what one might
2158 * expect. Return values are 0 for no success (yet), 1 for success; but
2159 * calling it once is usually not enough, even if blocking I/O is used
2160 * (see ssl3_shutdown).
2161 */
2162
2163 if (s->handshake_func == NULL) {
2164 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
2165 return -1;
2166 }
2167
2168 if (!SSL_in_init(s)) {
2169 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2170 struct ssl_async_args args;
2171
2172 args.s = s;
2173 args.type = OTHERFUNC;
2174 args.f.func_other = s->method->ssl_shutdown;
2175
2176 return ssl_start_async_job(s, &args, ssl_io_intern);
2177 } else {
2178 return s->method->ssl_shutdown(s);
2179 }
2180 } else {
2181 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2182 return -1;
2183 }
2184 }
2185
SSL_key_update(SSL * s,int updatetype)2186 int SSL_key_update(SSL *s, int updatetype)
2187 {
2188 /*
2189 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
2190 * negotiated, and that it is appropriate to call SSL_key_update() instead
2191 * of SSL_renegotiate().
2192 */
2193 if (!SSL_IS_TLS13(s)) {
2194 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2195 return 0;
2196 }
2197
2198 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2199 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2200 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2201 return 0;
2202 }
2203
2204 if (!SSL_is_init_finished(s)) {
2205 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2206 return 0;
2207 }
2208
2209 if (RECORD_LAYER_write_pending(&s->rlayer)) {
2210 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_BAD_WRITE_RETRY);
2211 return 0;
2212 }
2213
2214 ossl_statem_set_in_init(s, 1);
2215 s->key_update = updatetype;
2216 return 1;
2217 }
2218
SSL_get_key_update_type(const SSL * s)2219 int SSL_get_key_update_type(const SSL *s)
2220 {
2221 return s->key_update;
2222 }
2223
SSL_renegotiate(SSL * s)2224 int SSL_renegotiate(SSL *s)
2225 {
2226 if (SSL_IS_TLS13(s)) {
2227 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2228 return 0;
2229 }
2230
2231 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2232 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2233 return 0;
2234 }
2235
2236 s->renegotiate = 1;
2237 s->new_session = 1;
2238
2239 return s->method->ssl_renegotiate(s);
2240 }
2241
SSL_renegotiate_abbreviated(SSL * s)2242 int SSL_renegotiate_abbreviated(SSL *s)
2243 {
2244 if (SSL_IS_TLS13(s)) {
2245 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2246 return 0;
2247 }
2248
2249 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2250 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2251 return 0;
2252 }
2253
2254 s->renegotiate = 1;
2255 s->new_session = 0;
2256
2257 return s->method->ssl_renegotiate(s);
2258 }
2259
SSL_renegotiate_pending(const SSL * s)2260 int SSL_renegotiate_pending(const SSL *s)
2261 {
2262 /*
2263 * becomes true when negotiation is requested; false again once a
2264 * handshake has finished
2265 */
2266 return (s->renegotiate != 0);
2267 }
2268
SSL_ctrl(SSL * s,int cmd,long larg,void * parg)2269 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2270 {
2271 long l;
2272
2273 switch (cmd) {
2274 case SSL_CTRL_GET_READ_AHEAD:
2275 return RECORD_LAYER_get_read_ahead(&s->rlayer);
2276 case SSL_CTRL_SET_READ_AHEAD:
2277 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2278 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2279 return l;
2280
2281 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2282 s->msg_callback_arg = parg;
2283 return 1;
2284
2285 case SSL_CTRL_MODE:
2286 return (s->mode |= larg);
2287 case SSL_CTRL_CLEAR_MODE:
2288 return (s->mode &= ~larg);
2289 case SSL_CTRL_GET_MAX_CERT_LIST:
2290 return (long)s->max_cert_list;
2291 case SSL_CTRL_SET_MAX_CERT_LIST:
2292 if (larg < 0)
2293 return 0;
2294 l = (long)s->max_cert_list;
2295 s->max_cert_list = (size_t)larg;
2296 return l;
2297 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2298 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2299 return 0;
2300 #ifndef OPENSSL_NO_KTLS
2301 if (s->wbio != NULL && BIO_get_ktls_send(s->wbio))
2302 return 0;
2303 #endif /* OPENSSL_NO_KTLS */
2304 s->max_send_fragment = larg;
2305 if (s->max_send_fragment < s->split_send_fragment)
2306 s->split_send_fragment = s->max_send_fragment;
2307 return 1;
2308 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2309 if ((size_t)larg > s->max_send_fragment || larg == 0)
2310 return 0;
2311 s->split_send_fragment = larg;
2312 return 1;
2313 case SSL_CTRL_SET_MAX_PIPELINES:
2314 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2315 return 0;
2316 s->max_pipelines = larg;
2317 if (larg > 1)
2318 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2319 return 1;
2320 case SSL_CTRL_GET_RI_SUPPORT:
2321 if (s->s3)
2322 return s->s3->send_connection_binding;
2323 else
2324 return 0;
2325 case SSL_CTRL_CERT_FLAGS:
2326 return (s->cert->cert_flags |= larg);
2327 case SSL_CTRL_CLEAR_CERT_FLAGS:
2328 return (s->cert->cert_flags &= ~larg);
2329
2330 case SSL_CTRL_GET_RAW_CIPHERLIST:
2331 if (parg) {
2332 if (s->s3->tmp.ciphers_raw == NULL)
2333 return 0;
2334 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
2335 return (int)s->s3->tmp.ciphers_rawlen;
2336 } else {
2337 return TLS_CIPHER_LEN;
2338 }
2339 case SSL_CTRL_GET_EXTMS_SUPPORT:
2340 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2341 return -1;
2342 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2343 return 1;
2344 else
2345 return 0;
2346 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2347 return ssl_check_allowed_versions(larg, s->max_proto_version)
2348 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2349 &s->min_proto_version);
2350 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2351 return s->min_proto_version;
2352 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2353 return ssl_check_allowed_versions(s->min_proto_version, larg)
2354 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2355 &s->max_proto_version);
2356 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2357 return s->max_proto_version;
2358 default:
2359 return s->method->ssl_ctrl(s, cmd, larg, parg);
2360 }
2361 }
2362
SSL_callback_ctrl(SSL * s,int cmd,void (* fp)(void))2363 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2364 {
2365 switch (cmd) {
2366 case SSL_CTRL_SET_MSG_CALLBACK:
2367 s->msg_callback = (void (*)
2368 (int write_p, int version, int content_type,
2369 const void *buf, size_t len, SSL *ssl,
2370 void *arg))(fp);
2371 return 1;
2372
2373 default:
2374 return s->method->ssl_callback_ctrl(s, cmd, fp);
2375 }
2376 }
2377
LHASH_OF(SSL_SESSION)2378 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2379 {
2380 return ctx->sessions;
2381 }
2382
SSL_CTX_ctrl(SSL_CTX * ctx,int cmd,long larg,void * parg)2383 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2384 {
2385 long l;
2386 /* For some cases with ctx == NULL perform syntax checks */
2387 if (ctx == NULL) {
2388 switch (cmd) {
2389 #ifndef OPENSSL_NO_EC
2390 case SSL_CTRL_SET_GROUPS_LIST:
2391 return tls1_set_groups_list(NULL, NULL, parg);
2392 #endif
2393 case SSL_CTRL_SET_SIGALGS_LIST:
2394 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2395 return tls1_set_sigalgs_list(NULL, parg, 0);
2396 default:
2397 return 0;
2398 }
2399 }
2400
2401 switch (cmd) {
2402 case SSL_CTRL_GET_READ_AHEAD:
2403 return ctx->read_ahead;
2404 case SSL_CTRL_SET_READ_AHEAD:
2405 l = ctx->read_ahead;
2406 ctx->read_ahead = larg;
2407 return l;
2408
2409 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2410 ctx->msg_callback_arg = parg;
2411 return 1;
2412
2413 case SSL_CTRL_GET_MAX_CERT_LIST:
2414 return (long)ctx->max_cert_list;
2415 case SSL_CTRL_SET_MAX_CERT_LIST:
2416 if (larg < 0)
2417 return 0;
2418 l = (long)ctx->max_cert_list;
2419 ctx->max_cert_list = (size_t)larg;
2420 return l;
2421
2422 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2423 if (larg < 0)
2424 return 0;
2425 l = (long)ctx->session_cache_size;
2426 ctx->session_cache_size = (size_t)larg;
2427 return l;
2428 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2429 return (long)ctx->session_cache_size;
2430 case SSL_CTRL_SET_SESS_CACHE_MODE:
2431 l = ctx->session_cache_mode;
2432 ctx->session_cache_mode = larg;
2433 return l;
2434 case SSL_CTRL_GET_SESS_CACHE_MODE:
2435 return ctx->session_cache_mode;
2436
2437 case SSL_CTRL_SESS_NUMBER:
2438 return lh_SSL_SESSION_num_items(ctx->sessions);
2439 case SSL_CTRL_SESS_CONNECT:
2440 return tsan_load(&ctx->stats.sess_connect);
2441 case SSL_CTRL_SESS_CONNECT_GOOD:
2442 return tsan_load(&ctx->stats.sess_connect_good);
2443 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2444 return tsan_load(&ctx->stats.sess_connect_renegotiate);
2445 case SSL_CTRL_SESS_ACCEPT:
2446 return tsan_load(&ctx->stats.sess_accept);
2447 case SSL_CTRL_SESS_ACCEPT_GOOD:
2448 return tsan_load(&ctx->stats.sess_accept_good);
2449 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2450 return tsan_load(&ctx->stats.sess_accept_renegotiate);
2451 case SSL_CTRL_SESS_HIT:
2452 return tsan_load(&ctx->stats.sess_hit);
2453 case SSL_CTRL_SESS_CB_HIT:
2454 return tsan_load(&ctx->stats.sess_cb_hit);
2455 case SSL_CTRL_SESS_MISSES:
2456 return tsan_load(&ctx->stats.sess_miss);
2457 case SSL_CTRL_SESS_TIMEOUTS:
2458 return tsan_load(&ctx->stats.sess_timeout);
2459 case SSL_CTRL_SESS_CACHE_FULL:
2460 return tsan_load(&ctx->stats.sess_cache_full);
2461 case SSL_CTRL_MODE:
2462 return (ctx->mode |= larg);
2463 case SSL_CTRL_CLEAR_MODE:
2464 return (ctx->mode &= ~larg);
2465 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2466 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2467 return 0;
2468 ctx->max_send_fragment = larg;
2469 if (ctx->max_send_fragment < ctx->split_send_fragment)
2470 ctx->split_send_fragment = ctx->max_send_fragment;
2471 return 1;
2472 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2473 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2474 return 0;
2475 ctx->split_send_fragment = larg;
2476 return 1;
2477 case SSL_CTRL_SET_MAX_PIPELINES:
2478 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2479 return 0;
2480 ctx->max_pipelines = larg;
2481 return 1;
2482 case SSL_CTRL_CERT_FLAGS:
2483 return (ctx->cert->cert_flags |= larg);
2484 case SSL_CTRL_CLEAR_CERT_FLAGS:
2485 return (ctx->cert->cert_flags &= ~larg);
2486 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2487 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2488 && ssl_set_version_bound(ctx->method->version, (int)larg,
2489 &ctx->min_proto_version);
2490 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2491 return ctx->min_proto_version;
2492 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2493 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2494 && ssl_set_version_bound(ctx->method->version, (int)larg,
2495 &ctx->max_proto_version);
2496 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2497 return ctx->max_proto_version;
2498 default:
2499 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2500 }
2501 }
2502
SSL_CTX_callback_ctrl(SSL_CTX * ctx,int cmd,void (* fp)(void))2503 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2504 {
2505 switch (cmd) {
2506 case SSL_CTRL_SET_MSG_CALLBACK:
2507 ctx->msg_callback = (void (*)
2508 (int write_p, int version, int content_type,
2509 const void *buf, size_t len, SSL *ssl,
2510 void *arg))(fp);
2511 return 1;
2512
2513 default:
2514 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2515 }
2516 }
2517
ssl_cipher_id_cmp(const SSL_CIPHER * a,const SSL_CIPHER * b)2518 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2519 {
2520 if (a->id > b->id)
2521 return 1;
2522 if (a->id < b->id)
2523 return -1;
2524 return 0;
2525 }
2526
ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const * ap,const SSL_CIPHER * const * bp)2527 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2528 const SSL_CIPHER *const *bp)
2529 {
2530 if ((*ap)->id > (*bp)->id)
2531 return 1;
2532 if ((*ap)->id < (*bp)->id)
2533 return -1;
2534 return 0;
2535 }
2536
2537 /** return a STACK of the ciphers available for the SSL and in order of
2538 * preference */
STACK_OF(SSL_CIPHER)2539 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2540 {
2541 if (s != NULL) {
2542 if (s->cipher_list != NULL) {
2543 return s->cipher_list;
2544 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2545 return s->ctx->cipher_list;
2546 }
2547 }
2548 return NULL;
2549 }
2550
STACK_OF(SSL_CIPHER)2551 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2552 {
2553 if ((s == NULL) || !s->server)
2554 return NULL;
2555 return s->peer_ciphers;
2556 }
2557
STACK_OF(SSL_CIPHER)2558 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2559 {
2560 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2561 int i;
2562
2563 ciphers = SSL_get_ciphers(s);
2564 if (!ciphers)
2565 return NULL;
2566 if (!ssl_set_client_disabled(s))
2567 return NULL;
2568 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2569 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2570 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2571 if (!sk)
2572 sk = sk_SSL_CIPHER_new_null();
2573 if (!sk)
2574 return NULL;
2575 if (!sk_SSL_CIPHER_push(sk, c)) {
2576 sk_SSL_CIPHER_free(sk);
2577 return NULL;
2578 }
2579 }
2580 }
2581 return sk;
2582 }
2583
2584 /** return a STACK of the ciphers available for the SSL and in order of
2585 * algorithm id */
STACK_OF(SSL_CIPHER)2586 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2587 {
2588 if (s != NULL) {
2589 if (s->cipher_list_by_id != NULL) {
2590 return s->cipher_list_by_id;
2591 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2592 return s->ctx->cipher_list_by_id;
2593 }
2594 }
2595 return NULL;
2596 }
2597
2598 /** The old interface to get the same thing as SSL_get_ciphers() */
SSL_get_cipher_list(const SSL * s,int n)2599 const char *SSL_get_cipher_list(const SSL *s, int n)
2600 {
2601 const SSL_CIPHER *c;
2602 STACK_OF(SSL_CIPHER) *sk;
2603
2604 if (s == NULL)
2605 return NULL;
2606 sk = SSL_get_ciphers(s);
2607 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2608 return NULL;
2609 c = sk_SSL_CIPHER_value(sk, n);
2610 if (c == NULL)
2611 return NULL;
2612 return c->name;
2613 }
2614
2615 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2616 * preference */
STACK_OF(SSL_CIPHER)2617 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2618 {
2619 if (ctx != NULL)
2620 return ctx->cipher_list;
2621 return NULL;
2622 }
2623
2624 /*
2625 * Distinguish between ciphers controlled by set_ciphersuite() and
2626 * set_cipher_list() when counting.
2627 */
cipher_list_tls12_num(STACK_OF (SSL_CIPHER)* sk)2628 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
2629 {
2630 int i, num = 0;
2631 const SSL_CIPHER *c;
2632
2633 if (sk == NULL)
2634 return 0;
2635 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
2636 c = sk_SSL_CIPHER_value(sk, i);
2637 if (c->min_tls >= TLS1_3_VERSION)
2638 continue;
2639 num++;
2640 }
2641 return num;
2642 }
2643
2644 /** specify the ciphers to be used by default by the SSL_CTX */
SSL_CTX_set_cipher_list(SSL_CTX * ctx,const char * str)2645 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2646 {
2647 STACK_OF(SSL_CIPHER) *sk;
2648
2649 sk = ssl_create_cipher_list(ctx->method, ctx->tls13_ciphersuites,
2650 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2651 ctx->cert);
2652 /*
2653 * ssl_create_cipher_list may return an empty stack if it was unable to
2654 * find a cipher matching the given rule string (for example if the rule
2655 * string specifies a cipher which has been disabled). This is not an
2656 * error as far as ssl_create_cipher_list is concerned, and hence
2657 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2658 */
2659 if (sk == NULL)
2660 return 0;
2661 else if (cipher_list_tls12_num(sk) == 0) {
2662 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2663 return 0;
2664 }
2665 return 1;
2666 }
2667
2668 /** specify the ciphers to be used by the SSL */
SSL_set_cipher_list(SSL * s,const char * str)2669 int SSL_set_cipher_list(SSL *s, const char *str)
2670 {
2671 STACK_OF(SSL_CIPHER) *sk;
2672
2673 sk = ssl_create_cipher_list(s->ctx->method, s->tls13_ciphersuites,
2674 &s->cipher_list, &s->cipher_list_by_id, str,
2675 s->cert);
2676 /* see comment in SSL_CTX_set_cipher_list */
2677 if (sk == NULL)
2678 return 0;
2679 else if (cipher_list_tls12_num(sk) == 0) {
2680 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2681 return 0;
2682 }
2683 return 1;
2684 }
2685
SSL_get_shared_ciphers(const SSL * s,char * buf,int size)2686 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
2687 {
2688 char *p;
2689 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
2690 const SSL_CIPHER *c;
2691 int i;
2692
2693 if (!s->server
2694 || s->peer_ciphers == NULL
2695 || size < 2)
2696 return NULL;
2697
2698 p = buf;
2699 clntsk = s->peer_ciphers;
2700 srvrsk = SSL_get_ciphers(s);
2701 if (clntsk == NULL || srvrsk == NULL)
2702 return NULL;
2703
2704 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
2705 return NULL;
2706
2707 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
2708 int n;
2709
2710 c = sk_SSL_CIPHER_value(clntsk, i);
2711 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
2712 continue;
2713
2714 n = strlen(c->name);
2715 if (n + 1 > size) {
2716 if (p != buf)
2717 --p;
2718 *p = '\0';
2719 return buf;
2720 }
2721 strcpy(p, c->name);
2722 p += n;
2723 *(p++) = ':';
2724 size -= n + 1;
2725 }
2726 p[-1] = '\0';
2727 return buf;
2728 }
2729
2730 /**
2731 * Return the requested servername (SNI) value. Note that the behaviour varies
2732 * depending on:
2733 * - whether this is called by the client or the server,
2734 * - if we are before or during/after the handshake,
2735 * - if a resumption or normal handshake is being attempted/has occurred
2736 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
2737 *
2738 * Note that only the host_name type is defined (RFC 3546).
2739 */
SSL_get_servername(const SSL * s,const int type)2740 const char *SSL_get_servername(const SSL *s, const int type)
2741 {
2742 /*
2743 * If we don't know if we are the client or the server yet then we assume
2744 * client.
2745 */
2746 int server = s->handshake_func == NULL ? 0 : s->server;
2747 if (type != TLSEXT_NAMETYPE_host_name)
2748 return NULL;
2749
2750 if (server) {
2751 /**
2752 * Server side
2753 * In TLSv1.3 on the server SNI is not associated with the session
2754 * but in TLSv1.2 or below it is.
2755 *
2756 * Before the handshake:
2757 * - return NULL
2758 *
2759 * During/after the handshake (TLSv1.2 or below resumption occurred):
2760 * - If a servername was accepted by the server in the original
2761 * handshake then it will return that servername, or NULL otherwise.
2762 *
2763 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2764 * - The function will return the servername requested by the client in
2765 * this handshake or NULL if none was requested.
2766 */
2767 if (s->hit && !SSL_IS_TLS13(s))
2768 return s->session->ext.hostname;
2769 } else {
2770 /**
2771 * Client side
2772 *
2773 * Before the handshake:
2774 * - If a servername has been set via a call to
2775 * SSL_set_tlsext_host_name() then it will return that servername
2776 * - If one has not been set, but a TLSv1.2 resumption is being
2777 * attempted and the session from the original handshake had a
2778 * servername accepted by the server then it will return that
2779 * servername
2780 * - Otherwise it returns NULL
2781 *
2782 * During/after the handshake (TLSv1.2 or below resumption occurred):
2783 * - If the session from the original handshake had a servername accepted
2784 * by the server then it will return that servername.
2785 * - Otherwise it returns the servername set via
2786 * SSL_set_tlsext_host_name() (or NULL if it was not called).
2787 *
2788 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2789 * - It will return the servername set via SSL_set_tlsext_host_name()
2790 * (or NULL if it was not called).
2791 */
2792 if (SSL_in_before(s)) {
2793 if (s->ext.hostname == NULL
2794 && s->session != NULL
2795 && s->session->ssl_version != TLS1_3_VERSION)
2796 return s->session->ext.hostname;
2797 } else {
2798 if (!SSL_IS_TLS13(s) && s->hit && s->session->ext.hostname != NULL)
2799 return s->session->ext.hostname;
2800 }
2801 }
2802
2803 return s->ext.hostname;
2804 }
2805
SSL_get_servername_type(const SSL * s)2806 int SSL_get_servername_type(const SSL *s)
2807 {
2808 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
2809 return TLSEXT_NAMETYPE_host_name;
2810 return -1;
2811 }
2812
2813 /*
2814 * SSL_select_next_proto implements the standard protocol selection. It is
2815 * expected that this function is called from the callback set by
2816 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2817 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2818 * not included in the length. A byte string of length 0 is invalid. No byte
2819 * string may be truncated. The current, but experimental algorithm for
2820 * selecting the protocol is: 1) If the server doesn't support NPN then this
2821 * is indicated to the callback. In this case, the client application has to
2822 * abort the connection or have a default application level protocol. 2) If
2823 * the server supports NPN, but advertises an empty list then the client
2824 * selects the first protocol in its list, but indicates via the API that this
2825 * fallback case was enacted. 3) Otherwise, the client finds the first
2826 * protocol in the server's list that it supports and selects this protocol.
2827 * This is because it's assumed that the server has better information about
2828 * which protocol a client should use. 4) If the client doesn't support any
2829 * of the server's advertised protocols, then this is treated the same as
2830 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2831 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2832 */
SSL_select_next_proto(unsigned char ** out,unsigned char * outlen,const unsigned char * server,unsigned int server_len,const unsigned char * client,unsigned int client_len)2833 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2834 const unsigned char *server,
2835 unsigned int server_len,
2836 const unsigned char *client, unsigned int client_len)
2837 {
2838 unsigned int i, j;
2839 const unsigned char *result;
2840 int status = OPENSSL_NPN_UNSUPPORTED;
2841
2842 /*
2843 * For each protocol in server preference order, see if we support it.
2844 */
2845 for (i = 0; i < server_len;) {
2846 for (j = 0; j < client_len;) {
2847 if (server[i] == client[j] &&
2848 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2849 /* We found a match */
2850 result = &server[i];
2851 status = OPENSSL_NPN_NEGOTIATED;
2852 goto found;
2853 }
2854 j += client[j];
2855 j++;
2856 }
2857 i += server[i];
2858 i++;
2859 }
2860
2861 /* There's no overlap between our protocols and the server's list. */
2862 result = client;
2863 status = OPENSSL_NPN_NO_OVERLAP;
2864
2865 found:
2866 *out = (unsigned char *)result + 1;
2867 *outlen = result[0];
2868 return status;
2869 }
2870
2871 #ifndef OPENSSL_NO_NEXTPROTONEG
2872 /*
2873 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2874 * client's requested protocol for this connection and returns 0. If the
2875 * client didn't request any protocol, then *data is set to NULL. Note that
2876 * the client can request any protocol it chooses. The value returned from
2877 * this function need not be a member of the list of supported protocols
2878 * provided by the callback.
2879 */
SSL_get0_next_proto_negotiated(const SSL * s,const unsigned char ** data,unsigned * len)2880 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2881 unsigned *len)
2882 {
2883 *data = s->ext.npn;
2884 if (!*data) {
2885 *len = 0;
2886 } else {
2887 *len = (unsigned int)s->ext.npn_len;
2888 }
2889 }
2890
2891 /*
2892 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2893 * a TLS server needs a list of supported protocols for Next Protocol
2894 * Negotiation. The returned list must be in wire format. The list is
2895 * returned by setting |out| to point to it and |outlen| to its length. This
2896 * memory will not be modified, but one should assume that the SSL* keeps a
2897 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2898 * wishes to advertise. Otherwise, no such extension will be included in the
2899 * ServerHello.
2900 */
SSL_CTX_set_npn_advertised_cb(SSL_CTX * ctx,SSL_CTX_npn_advertised_cb_func cb,void * arg)2901 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2902 SSL_CTX_npn_advertised_cb_func cb,
2903 void *arg)
2904 {
2905 ctx->ext.npn_advertised_cb = cb;
2906 ctx->ext.npn_advertised_cb_arg = arg;
2907 }
2908
2909 /*
2910 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2911 * client needs to select a protocol from the server's provided list. |out|
2912 * must be set to point to the selected protocol (which may be within |in|).
2913 * The length of the protocol name must be written into |outlen|. The
2914 * server's advertised protocols are provided in |in| and |inlen|. The
2915 * callback can assume that |in| is syntactically valid. The client must
2916 * select a protocol. It is fatal to the connection if this callback returns
2917 * a value other than SSL_TLSEXT_ERR_OK.
2918 */
SSL_CTX_set_npn_select_cb(SSL_CTX * ctx,SSL_CTX_npn_select_cb_func cb,void * arg)2919 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
2920 SSL_CTX_npn_select_cb_func cb,
2921 void *arg)
2922 {
2923 ctx->ext.npn_select_cb = cb;
2924 ctx->ext.npn_select_cb_arg = arg;
2925 }
2926 #endif
2927
alpn_value_ok(const unsigned char * protos,unsigned int protos_len)2928 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
2929 {
2930 unsigned int idx;
2931
2932 if (protos_len < 2 || protos == NULL)
2933 return 0;
2934
2935 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
2936 if (protos[idx] == 0)
2937 return 0;
2938 }
2939 return idx == protos_len;
2940 }
2941 /*
2942 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2943 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2944 * length-prefixed strings). Returns 0 on success.
2945 */
SSL_CTX_set_alpn_protos(SSL_CTX * ctx,const unsigned char * protos,unsigned int protos_len)2946 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2947 unsigned int protos_len)
2948 {
2949 unsigned char *alpn;
2950
2951 if (protos_len == 0 || protos == NULL) {
2952 OPENSSL_free(ctx->ext.alpn);
2953 ctx->ext.alpn = NULL;
2954 ctx->ext.alpn_len = 0;
2955 return 0;
2956 }
2957 /* Not valid per RFC */
2958 if (!alpn_value_ok(protos, protos_len))
2959 return 1;
2960
2961 alpn = OPENSSL_memdup(protos, protos_len);
2962 if (alpn == NULL) {
2963 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2964 return 1;
2965 }
2966 OPENSSL_free(ctx->ext.alpn);
2967 ctx->ext.alpn = alpn;
2968 ctx->ext.alpn_len = protos_len;
2969
2970 return 0;
2971 }
2972
2973 /*
2974 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2975 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2976 * length-prefixed strings). Returns 0 on success.
2977 */
SSL_set_alpn_protos(SSL * ssl,const unsigned char * protos,unsigned int protos_len)2978 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2979 unsigned int protos_len)
2980 {
2981 unsigned char *alpn;
2982
2983 if (protos_len == 0 || protos == NULL) {
2984 OPENSSL_free(ssl->ext.alpn);
2985 ssl->ext.alpn = NULL;
2986 ssl->ext.alpn_len = 0;
2987 return 0;
2988 }
2989 /* Not valid per RFC */
2990 if (!alpn_value_ok(protos, protos_len))
2991 return 1;
2992
2993 alpn = OPENSSL_memdup(protos, protos_len);
2994 if (alpn == NULL) {
2995 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2996 return 1;
2997 }
2998 OPENSSL_free(ssl->ext.alpn);
2999 ssl->ext.alpn = alpn;
3000 ssl->ext.alpn_len = protos_len;
3001
3002 return 0;
3003 }
3004
3005 /*
3006 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3007 * called during ClientHello processing in order to select an ALPN protocol
3008 * from the client's list of offered protocols.
3009 */
SSL_CTX_set_alpn_select_cb(SSL_CTX * ctx,SSL_CTX_alpn_select_cb_func cb,void * arg)3010 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3011 SSL_CTX_alpn_select_cb_func cb,
3012 void *arg)
3013 {
3014 ctx->ext.alpn_select_cb = cb;
3015 ctx->ext.alpn_select_cb_arg = arg;
3016 }
3017
3018 /*
3019 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3020 * On return it sets |*data| to point to |*len| bytes of protocol name
3021 * (not including the leading length-prefix byte). If the server didn't
3022 * respond with a negotiated protocol then |*len| will be zero.
3023 */
SSL_get0_alpn_selected(const SSL * ssl,const unsigned char ** data,unsigned int * len)3024 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3025 unsigned int *len)
3026 {
3027 *data = NULL;
3028 if (ssl->s3)
3029 *data = ssl->s3->alpn_selected;
3030 if (*data == NULL)
3031 *len = 0;
3032 else
3033 *len = (unsigned int)ssl->s3->alpn_selected_len;
3034 }
3035
SSL_export_keying_material(SSL * s,unsigned char * out,size_t olen,const char * label,size_t llen,const unsigned char * context,size_t contextlen,int use_context)3036 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3037 const char *label, size_t llen,
3038 const unsigned char *context, size_t contextlen,
3039 int use_context)
3040 {
3041 if (s->session == NULL
3042 || (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER))
3043 return -1;
3044
3045 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
3046 llen, context,
3047 contextlen, use_context);
3048 }
3049
SSL_export_keying_material_early(SSL * s,unsigned char * out,size_t olen,const char * label,size_t llen,const unsigned char * context,size_t contextlen)3050 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3051 const char *label, size_t llen,
3052 const unsigned char *context,
3053 size_t contextlen)
3054 {
3055 if (s->version != TLS1_3_VERSION)
3056 return 0;
3057
3058 return tls13_export_keying_material_early(s, out, olen, label, llen,
3059 context, contextlen);
3060 }
3061
ssl_session_hash(const SSL_SESSION * a)3062 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3063 {
3064 const unsigned char *session_id = a->session_id;
3065 unsigned long l;
3066 unsigned char tmp_storage[4];
3067
3068 if (a->session_id_length < sizeof(tmp_storage)) {
3069 memset(tmp_storage, 0, sizeof(tmp_storage));
3070 memcpy(tmp_storage, a->session_id, a->session_id_length);
3071 session_id = tmp_storage;
3072 }
3073
3074 l = (unsigned long)
3075 ((unsigned long)session_id[0]) |
3076 ((unsigned long)session_id[1] << 8L) |
3077 ((unsigned long)session_id[2] << 16L) |
3078 ((unsigned long)session_id[3] << 24L);
3079 return l;
3080 }
3081
3082 /*
3083 * NB: If this function (or indeed the hash function which uses a sort of
3084 * coarser function than this one) is changed, ensure
3085 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3086 * being able to construct an SSL_SESSION that will collide with any existing
3087 * session with a matching session ID.
3088 */
ssl_session_cmp(const SSL_SESSION * a,const SSL_SESSION * b)3089 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3090 {
3091 if (a->ssl_version != b->ssl_version)
3092 return 1;
3093 if (a->session_id_length != b->session_id_length)
3094 return 1;
3095 return memcmp(a->session_id, b->session_id, a->session_id_length);
3096 }
3097
3098 /*
3099 * These wrapper functions should remain rather than redeclaring
3100 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3101 * variable. The reason is that the functions aren't static, they're exposed
3102 * via ssl.h.
3103 */
3104
SSL_CTX_new(const SSL_METHOD * meth)3105 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3106 {
3107 SSL_CTX *ret = NULL;
3108
3109 if (meth == NULL) {
3110 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
3111 return NULL;
3112 }
3113
3114 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3115 return NULL;
3116
3117 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3118 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3119 goto err;
3120 }
3121 ret = OPENSSL_zalloc(sizeof(*ret));
3122 if (ret == NULL)
3123 goto err;
3124
3125 ret->method = meth;
3126 ret->min_proto_version = 0;
3127 ret->max_proto_version = 0;
3128 ret->mode = SSL_MODE_AUTO_RETRY;
3129 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3130 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3131 /* We take the system default. */
3132 ret->session_timeout = meth->get_timeout();
3133 ret->references = 1;
3134 ret->lock = CRYPTO_THREAD_lock_new();
3135 if (ret->lock == NULL) {
3136 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
3137 OPENSSL_free(ret);
3138 return NULL;
3139 }
3140 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3141 ret->verify_mode = SSL_VERIFY_NONE;
3142 if ((ret->cert = ssl_cert_new()) == NULL)
3143 goto err;
3144
3145 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3146 if (ret->sessions == NULL)
3147 goto err;
3148 ret->cert_store = X509_STORE_new();
3149 if (ret->cert_store == NULL)
3150 goto err;
3151 #ifndef OPENSSL_NO_CT
3152 ret->ctlog_store = CTLOG_STORE_new();
3153 if (ret->ctlog_store == NULL)
3154 goto err;
3155 #endif
3156
3157 if (!SSL_CTX_set_ciphersuites(ret, TLS_DEFAULT_CIPHERSUITES))
3158 goto err;
3159
3160 if (!ssl_create_cipher_list(ret->method,
3161 ret->tls13_ciphersuites,
3162 &ret->cipher_list, &ret->cipher_list_by_id,
3163 SSL_DEFAULT_CIPHER_LIST, ret->cert)
3164 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3165 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3166 goto err2;
3167 }
3168
3169 ret->param = X509_VERIFY_PARAM_new();
3170 if (ret->param == NULL)
3171 goto err;
3172
3173 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
3174 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
3175 goto err2;
3176 }
3177 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
3178 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
3179 goto err2;
3180 }
3181
3182 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3183 goto err;
3184
3185 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3186 goto err;
3187
3188 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3189 goto err;
3190
3191 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3192 goto err;
3193
3194 /* No compression for DTLS */
3195 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3196 ret->comp_methods = SSL_COMP_get_compression_methods();
3197
3198 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3199 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3200
3201 /* Setup RFC5077 ticket keys */
3202 if ((RAND_bytes(ret->ext.tick_key_name,
3203 sizeof(ret->ext.tick_key_name)) <= 0)
3204 || (RAND_priv_bytes(ret->ext.secure->tick_hmac_key,
3205 sizeof(ret->ext.secure->tick_hmac_key)) <= 0)
3206 || (RAND_priv_bytes(ret->ext.secure->tick_aes_key,
3207 sizeof(ret->ext.secure->tick_aes_key)) <= 0))
3208 ret->options |= SSL_OP_NO_TICKET;
3209
3210 if (RAND_priv_bytes(ret->ext.cookie_hmac_key,
3211 sizeof(ret->ext.cookie_hmac_key)) <= 0)
3212 goto err;
3213
3214 #ifndef OPENSSL_NO_SRP
3215 if (!SSL_CTX_SRP_CTX_init(ret))
3216 goto err;
3217 #endif
3218 #ifndef OPENSSL_NO_ENGINE
3219 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3220 # define eng_strx(x) #x
3221 # define eng_str(x) eng_strx(x)
3222 /* Use specific client engine automatically... ignore errors */
3223 {
3224 ENGINE *eng;
3225 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3226 if (!eng) {
3227 ERR_clear_error();
3228 ENGINE_load_builtin_engines();
3229 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3230 }
3231 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3232 ERR_clear_error();
3233 }
3234 # endif
3235 #endif
3236 /*
3237 * Default is to connect to non-RI servers. When RI is more widely
3238 * deployed might change this.
3239 */
3240 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
3241 /*
3242 * Disable compression by default to prevent CRIME. Applications can
3243 * re-enable compression by configuring
3244 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3245 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3246 * middlebox compatibility by default. This may be disabled by default in
3247 * a later OpenSSL version.
3248 */
3249 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3250
3251 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3252
3253 /*
3254 * We cannot usefully set a default max_early_data here (which gets
3255 * propagated in SSL_new(), for the following reason: setting the
3256 * SSL field causes tls_construct_stoc_early_data() to tell the
3257 * client that early data will be accepted when constructing a TLS 1.3
3258 * session ticket, and the client will accordingly send us early data
3259 * when using that ticket (if the client has early data to send).
3260 * However, in order for the early data to actually be consumed by
3261 * the application, the application must also have calls to
3262 * SSL_read_early_data(); otherwise we'll just skip past the early data
3263 * and ignore it. So, since the application must add calls to
3264 * SSL_read_early_data(), we also require them to add
3265 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3266 * eliminating the bandwidth-wasting early data in the case described
3267 * above.
3268 */
3269 ret->max_early_data = 0;
3270
3271 /*
3272 * Default recv_max_early_data is a fully loaded single record. Could be
3273 * split across multiple records in practice. We set this differently to
3274 * max_early_data so that, in the default case, we do not advertise any
3275 * support for early_data, but if a client were to send us some (e.g.
3276 * because of an old, stale ticket) then we will tolerate it and skip over
3277 * it.
3278 */
3279 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3280
3281 /* By default we send two session tickets automatically in TLSv1.3 */
3282 ret->num_tickets = 2;
3283
3284 ssl_ctx_system_config(ret);
3285
3286 return ret;
3287 err:
3288 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
3289 err2:
3290 SSL_CTX_free(ret);
3291 return NULL;
3292 }
3293
SSL_CTX_up_ref(SSL_CTX * ctx)3294 int SSL_CTX_up_ref(SSL_CTX *ctx)
3295 {
3296 int i;
3297
3298 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3299 return 0;
3300
3301 REF_PRINT_COUNT("SSL_CTX", ctx);
3302 REF_ASSERT_ISNT(i < 2);
3303 return ((i > 1) ? 1 : 0);
3304 }
3305
SSL_CTX_free(SSL_CTX * a)3306 void SSL_CTX_free(SSL_CTX *a)
3307 {
3308 int i;
3309
3310 if (a == NULL)
3311 return;
3312
3313 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3314 REF_PRINT_COUNT("SSL_CTX", a);
3315 if (i > 0)
3316 return;
3317 REF_ASSERT_ISNT(i < 0);
3318
3319 X509_VERIFY_PARAM_free(a->param);
3320 dane_ctx_final(&a->dane);
3321
3322 /*
3323 * Free internal session cache. However: the remove_cb() may reference
3324 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3325 * after the sessions were flushed.
3326 * As the ex_data handling routines might also touch the session cache,
3327 * the most secure solution seems to be: empty (flush) the cache, then
3328 * free ex_data, then finally free the cache.
3329 * (See ticket [openssl.org #212].)
3330 */
3331 if (a->sessions != NULL)
3332 SSL_CTX_flush_sessions(a, 0);
3333
3334 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3335 lh_SSL_SESSION_free(a->sessions);
3336 X509_STORE_free(a->cert_store);
3337 #ifndef OPENSSL_NO_CT
3338 CTLOG_STORE_free(a->ctlog_store);
3339 #endif
3340 sk_SSL_CIPHER_free(a->cipher_list);
3341 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3342 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3343 ssl_cert_free(a->cert);
3344 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3345 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3346 sk_X509_pop_free(a->extra_certs, X509_free);
3347 a->comp_methods = NULL;
3348 #ifndef OPENSSL_NO_SRTP
3349 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3350 #endif
3351 #ifndef OPENSSL_NO_SRP
3352 SSL_CTX_SRP_CTX_free(a);
3353 #endif
3354 #ifndef OPENSSL_NO_ENGINE
3355 ENGINE_finish(a->client_cert_engine);
3356 #endif
3357
3358 #ifndef OPENSSL_NO_EC
3359 OPENSSL_free(a->ext.ecpointformats);
3360 OPENSSL_free(a->ext.supportedgroups);
3361 #endif
3362 OPENSSL_free(a->ext.alpn);
3363 OPENSSL_secure_free(a->ext.secure);
3364
3365 CRYPTO_THREAD_lock_free(a->lock);
3366
3367 OPENSSL_free(a);
3368 }
3369
SSL_CTX_set_default_passwd_cb(SSL_CTX * ctx,pem_password_cb * cb)3370 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3371 {
3372 ctx->default_passwd_callback = cb;
3373 }
3374
SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX * ctx,void * u)3375 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3376 {
3377 ctx->default_passwd_callback_userdata = u;
3378 }
3379
SSL_CTX_get_default_passwd_cb(SSL_CTX * ctx)3380 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3381 {
3382 return ctx->default_passwd_callback;
3383 }
3384
SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX * ctx)3385 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3386 {
3387 return ctx->default_passwd_callback_userdata;
3388 }
3389
SSL_set_default_passwd_cb(SSL * s,pem_password_cb * cb)3390 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3391 {
3392 s->default_passwd_callback = cb;
3393 }
3394
SSL_set_default_passwd_cb_userdata(SSL * s,void * u)3395 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3396 {
3397 s->default_passwd_callback_userdata = u;
3398 }
3399
SSL_get_default_passwd_cb(SSL * s)3400 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3401 {
3402 return s->default_passwd_callback;
3403 }
3404
SSL_get_default_passwd_cb_userdata(SSL * s)3405 void *SSL_get_default_passwd_cb_userdata(SSL *s)
3406 {
3407 return s->default_passwd_callback_userdata;
3408 }
3409
SSL_CTX_set_cert_verify_callback(SSL_CTX * ctx,int (* cb)(X509_STORE_CTX *,void *),void * arg)3410 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3411 int (*cb) (X509_STORE_CTX *, void *),
3412 void *arg)
3413 {
3414 ctx->app_verify_callback = cb;
3415 ctx->app_verify_arg = arg;
3416 }
3417
SSL_CTX_set_verify(SSL_CTX * ctx,int mode,int (* cb)(int,X509_STORE_CTX *))3418 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3419 int (*cb) (int, X509_STORE_CTX *))
3420 {
3421 ctx->verify_mode = mode;
3422 ctx->default_verify_callback = cb;
3423 }
3424
SSL_CTX_set_verify_depth(SSL_CTX * ctx,int depth)3425 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3426 {
3427 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3428 }
3429
SSL_CTX_set_cert_cb(SSL_CTX * c,int (* cb)(SSL * ssl,void * arg),void * arg)3430 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3431 {
3432 ssl_cert_set_cert_cb(c->cert, cb, arg);
3433 }
3434
SSL_set_cert_cb(SSL * s,int (* cb)(SSL * ssl,void * arg),void * arg)3435 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3436 {
3437 ssl_cert_set_cert_cb(s->cert, cb, arg);
3438 }
3439
ssl_set_masks(SSL * s)3440 void ssl_set_masks(SSL *s)
3441 {
3442 CERT *c = s->cert;
3443 uint32_t *pvalid = s->s3->tmp.valid_flags;
3444 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3445 unsigned long mask_k, mask_a;
3446 #ifndef OPENSSL_NO_EC
3447 int have_ecc_cert, ecdsa_ok;
3448 #endif
3449 if (c == NULL)
3450 return;
3451
3452 #ifndef OPENSSL_NO_DH
3453 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
3454 #else
3455 dh_tmp = 0;
3456 #endif
3457
3458 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3459 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3460 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3461 #ifndef OPENSSL_NO_EC
3462 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3463 #endif
3464 mask_k = 0;
3465 mask_a = 0;
3466
3467 #ifdef CIPHER_DEBUG
3468 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
3469 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3470 #endif
3471
3472 #ifndef OPENSSL_NO_GOST
3473 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3474 mask_k |= SSL_kGOST;
3475 mask_a |= SSL_aGOST12;
3476 }
3477 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3478 mask_k |= SSL_kGOST;
3479 mask_a |= SSL_aGOST12;
3480 }
3481 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3482 mask_k |= SSL_kGOST;
3483 mask_a |= SSL_aGOST01;
3484 }
3485 #endif
3486
3487 if (rsa_enc)
3488 mask_k |= SSL_kRSA;
3489
3490 if (dh_tmp)
3491 mask_k |= SSL_kDHE;
3492
3493 /*
3494 * If we only have an RSA-PSS certificate allow RSA authentication
3495 * if TLS 1.2 and peer supports it.
3496 */
3497
3498 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3499 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3500 && TLS1_get_version(s) == TLS1_2_VERSION))
3501 mask_a |= SSL_aRSA;
3502
3503 if (dsa_sign) {
3504 mask_a |= SSL_aDSS;
3505 }
3506
3507 mask_a |= SSL_aNULL;
3508
3509 /*
3510 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3511 * depending on the key usage extension.
3512 */
3513 #ifndef OPENSSL_NO_EC
3514 if (have_ecc_cert) {
3515 uint32_t ex_kusage;
3516 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3517 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3518 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3519 ecdsa_ok = 0;
3520 if (ecdsa_ok)
3521 mask_a |= SSL_aECDSA;
3522 }
3523 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3524 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3525 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3526 && TLS1_get_version(s) == TLS1_2_VERSION)
3527 mask_a |= SSL_aECDSA;
3528
3529 /* Allow Ed448 for TLS 1.2 if peer supports it */
3530 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3531 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3532 && TLS1_get_version(s) == TLS1_2_VERSION)
3533 mask_a |= SSL_aECDSA;
3534 #endif
3535
3536 #ifndef OPENSSL_NO_EC
3537 mask_k |= SSL_kECDHE;
3538 #endif
3539
3540 #ifndef OPENSSL_NO_PSK
3541 mask_k |= SSL_kPSK;
3542 mask_a |= SSL_aPSK;
3543 if (mask_k & SSL_kRSA)
3544 mask_k |= SSL_kRSAPSK;
3545 if (mask_k & SSL_kDHE)
3546 mask_k |= SSL_kDHEPSK;
3547 if (mask_k & SSL_kECDHE)
3548 mask_k |= SSL_kECDHEPSK;
3549 #endif
3550
3551 s->s3->tmp.mask_k = mask_k;
3552 s->s3->tmp.mask_a = mask_a;
3553 }
3554
3555 #ifndef OPENSSL_NO_EC
3556
ssl_check_srvr_ecc_cert_and_alg(X509 * x,SSL * s)3557 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3558 {
3559 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3560 /* key usage, if present, must allow signing */
3561 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3562 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3563 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3564 return 0;
3565 }
3566 }
3567 return 1; /* all checks are ok */
3568 }
3569
3570 #endif
3571
ssl_get_server_cert_serverinfo(SSL * s,const unsigned char ** serverinfo,size_t * serverinfo_length)3572 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3573 size_t *serverinfo_length)
3574 {
3575 CERT_PKEY *cpk = s->s3->tmp.cert;
3576 *serverinfo_length = 0;
3577
3578 if (cpk == NULL || cpk->serverinfo == NULL)
3579 return 0;
3580
3581 *serverinfo = cpk->serverinfo;
3582 *serverinfo_length = cpk->serverinfo_length;
3583 return 1;
3584 }
3585
ssl_update_cache(SSL * s,int mode)3586 void ssl_update_cache(SSL *s, int mode)
3587 {
3588 int i;
3589
3590 /*
3591 * If the session_id_length is 0, we are not supposed to cache it, and it
3592 * would be rather hard to do anyway :-)
3593 */
3594 if (s->session->session_id_length == 0)
3595 return;
3596
3597 /*
3598 * If sid_ctx_length is 0 there is no specific application context
3599 * associated with this session, so when we try to resume it and
3600 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3601 * indication that this is actually a session for the proper application
3602 * context, and the *handshake* will fail, not just the resumption attempt.
3603 * Do not cache (on the server) these sessions that are not resumable
3604 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
3605 */
3606 if (s->server && s->session->sid_ctx_length == 0
3607 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
3608 return;
3609
3610 i = s->session_ctx->session_cache_mode;
3611 if ((i & mode) != 0
3612 && (!s->hit || SSL_IS_TLS13(s))) {
3613 /*
3614 * Add the session to the internal cache. In server side TLSv1.3 we
3615 * normally don't do this because by default it's a full stateless ticket
3616 * with only a dummy session id so there is no reason to cache it,
3617 * unless:
3618 * - we are doing early_data, in which case we cache so that we can
3619 * detect replays
3620 * - the application has set a remove_session_cb so needs to know about
3621 * session timeout events
3622 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
3623 */
3624 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
3625 && (!SSL_IS_TLS13(s)
3626 || !s->server
3627 || (s->max_early_data > 0
3628 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
3629 || s->session_ctx->remove_session_cb != NULL
3630 || (s->options & SSL_OP_NO_TICKET) != 0))
3631 SSL_CTX_add_session(s->session_ctx, s->session);
3632
3633 /*
3634 * Add the session to the external cache. We do this even in server side
3635 * TLSv1.3 without early data because some applications just want to
3636 * know about the creation of a session and aren't doing a full cache.
3637 */
3638 if (s->session_ctx->new_session_cb != NULL) {
3639 SSL_SESSION_up_ref(s->session);
3640 if (!s->session_ctx->new_session_cb(s, s->session))
3641 SSL_SESSION_free(s->session);
3642 }
3643 }
3644
3645 /* auto flush every 255 connections */
3646 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3647 TSAN_QUALIFIER int *stat;
3648 if (mode & SSL_SESS_CACHE_CLIENT)
3649 stat = &s->session_ctx->stats.sess_connect_good;
3650 else
3651 stat = &s->session_ctx->stats.sess_accept_good;
3652 if ((tsan_load(stat) & 0xff) == 0xff)
3653 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3654 }
3655 }
3656
SSL_CTX_get_ssl_method(const SSL_CTX * ctx)3657 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
3658 {
3659 return ctx->method;
3660 }
3661
SSL_get_ssl_method(const SSL * s)3662 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
3663 {
3664 return s->method;
3665 }
3666
SSL_set_ssl_method(SSL * s,const SSL_METHOD * meth)3667 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3668 {
3669 int ret = 1;
3670
3671 if (s->method != meth) {
3672 const SSL_METHOD *sm = s->method;
3673 int (*hf) (SSL *) = s->handshake_func;
3674
3675 if (sm->version == meth->version)
3676 s->method = meth;
3677 else {
3678 sm->ssl_free(s);
3679 s->method = meth;
3680 ret = s->method->ssl_new(s);
3681 }
3682
3683 if (hf == sm->ssl_connect)
3684 s->handshake_func = meth->ssl_connect;
3685 else if (hf == sm->ssl_accept)
3686 s->handshake_func = meth->ssl_accept;
3687 }
3688 return ret;
3689 }
3690
SSL_get_error(const SSL * s,int i)3691 int SSL_get_error(const SSL *s, int i)
3692 {
3693 int reason;
3694 unsigned long l;
3695 BIO *bio;
3696
3697 if (i > 0)
3698 return SSL_ERROR_NONE;
3699
3700 /*
3701 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3702 * where we do encode the error
3703 */
3704 if ((l = ERR_peek_error()) != 0) {
3705 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3706 return SSL_ERROR_SYSCALL;
3707 else
3708 return SSL_ERROR_SSL;
3709 }
3710
3711 if (SSL_want_read(s)) {
3712 bio = SSL_get_rbio(s);
3713 if (BIO_should_read(bio))
3714 return SSL_ERROR_WANT_READ;
3715 else if (BIO_should_write(bio))
3716 /*
3717 * This one doesn't make too much sense ... We never try to write
3718 * to the rbio, and an application program where rbio and wbio
3719 * are separate couldn't even know what it should wait for.
3720 * However if we ever set s->rwstate incorrectly (so that we have
3721 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3722 * wbio *are* the same, this test works around that bug; so it
3723 * might be safer to keep it.
3724 */
3725 return SSL_ERROR_WANT_WRITE;
3726 else if (BIO_should_io_special(bio)) {
3727 reason = BIO_get_retry_reason(bio);
3728 if (reason == BIO_RR_CONNECT)
3729 return SSL_ERROR_WANT_CONNECT;
3730 else if (reason == BIO_RR_ACCEPT)
3731 return SSL_ERROR_WANT_ACCEPT;
3732 else
3733 return SSL_ERROR_SYSCALL; /* unknown */
3734 }
3735 }
3736
3737 if (SSL_want_write(s)) {
3738 /* Access wbio directly - in order to use the buffered bio if present */
3739 bio = s->wbio;
3740 if (BIO_should_write(bio))
3741 return SSL_ERROR_WANT_WRITE;
3742 else if (BIO_should_read(bio))
3743 /*
3744 * See above (SSL_want_read(s) with BIO_should_write(bio))
3745 */
3746 return SSL_ERROR_WANT_READ;
3747 else if (BIO_should_io_special(bio)) {
3748 reason = BIO_get_retry_reason(bio);
3749 if (reason == BIO_RR_CONNECT)
3750 return SSL_ERROR_WANT_CONNECT;
3751 else if (reason == BIO_RR_ACCEPT)
3752 return SSL_ERROR_WANT_ACCEPT;
3753 else
3754 return SSL_ERROR_SYSCALL;
3755 }
3756 }
3757 if (SSL_want_x509_lookup(s))
3758 return SSL_ERROR_WANT_X509_LOOKUP;
3759 if (SSL_want_async(s))
3760 return SSL_ERROR_WANT_ASYNC;
3761 if (SSL_want_async_job(s))
3762 return SSL_ERROR_WANT_ASYNC_JOB;
3763 if (SSL_want_client_hello_cb(s))
3764 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
3765
3766 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3767 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
3768 return SSL_ERROR_ZERO_RETURN;
3769
3770 return SSL_ERROR_SYSCALL;
3771 }
3772
ssl_do_handshake_intern(void * vargs)3773 static int ssl_do_handshake_intern(void *vargs)
3774 {
3775 struct ssl_async_args *args;
3776 SSL *s;
3777
3778 args = (struct ssl_async_args *)vargs;
3779 s = args->s;
3780
3781 return s->handshake_func(s);
3782 }
3783
SSL_do_handshake(SSL * s)3784 int SSL_do_handshake(SSL *s)
3785 {
3786 int ret = 1;
3787
3788 if (s->handshake_func == NULL) {
3789 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3790 return -1;
3791 }
3792
3793 ossl_statem_check_finish_init(s, -1);
3794
3795 s->method->ssl_renegotiate_check(s, 0);
3796
3797 if (SSL_in_init(s) || SSL_in_before(s)) {
3798 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3799 struct ssl_async_args args;
3800
3801 args.s = s;
3802
3803 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3804 } else {
3805 ret = s->handshake_func(s);
3806 }
3807 }
3808 return ret;
3809 }
3810
SSL_set_accept_state(SSL * s)3811 void SSL_set_accept_state(SSL *s)
3812 {
3813 s->server = 1;
3814 s->shutdown = 0;
3815 ossl_statem_clear(s);
3816 s->handshake_func = s->method->ssl_accept;
3817 clear_ciphers(s);
3818 }
3819
SSL_set_connect_state(SSL * s)3820 void SSL_set_connect_state(SSL *s)
3821 {
3822 s->server = 0;
3823 s->shutdown = 0;
3824 ossl_statem_clear(s);
3825 s->handshake_func = s->method->ssl_connect;
3826 clear_ciphers(s);
3827 }
3828
ssl_undefined_function(SSL * s)3829 int ssl_undefined_function(SSL *s)
3830 {
3831 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3832 return 0;
3833 }
3834
ssl_undefined_void_function(void)3835 int ssl_undefined_void_function(void)
3836 {
3837 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3838 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3839 return 0;
3840 }
3841
ssl_undefined_const_function(const SSL * s)3842 int ssl_undefined_const_function(const SSL *s)
3843 {
3844 return 0;
3845 }
3846
ssl_bad_method(int ver)3847 const SSL_METHOD *ssl_bad_method(int ver)
3848 {
3849 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3850 return NULL;
3851 }
3852
ssl_protocol_to_string(int version)3853 const char *ssl_protocol_to_string(int version)
3854 {
3855 switch(version)
3856 {
3857 case TLS1_3_VERSION:
3858 return "TLSv1.3";
3859
3860 case TLS1_2_VERSION:
3861 return "TLSv1.2";
3862
3863 case TLS1_1_VERSION:
3864 return "TLSv1.1";
3865
3866 case TLS1_VERSION:
3867 return "TLSv1";
3868
3869 case SSL3_VERSION:
3870 return "SSLv3";
3871
3872 case DTLS1_BAD_VER:
3873 return "DTLSv0.9";
3874
3875 case DTLS1_VERSION:
3876 return "DTLSv1";
3877
3878 case DTLS1_2_VERSION:
3879 return "DTLSv1.2";
3880
3881 default:
3882 return "unknown";
3883 }
3884 }
3885
SSL_get_version(const SSL * s)3886 const char *SSL_get_version(const SSL *s)
3887 {
3888 return ssl_protocol_to_string(s->version);
3889 }
3890
dup_ca_names(STACK_OF (X509_NAME)** dst,STACK_OF (X509_NAME)* src)3891 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
3892 {
3893 STACK_OF(X509_NAME) *sk;
3894 X509_NAME *xn;
3895 int i;
3896
3897 if (src == NULL) {
3898 *dst = NULL;
3899 return 1;
3900 }
3901
3902 if ((sk = sk_X509_NAME_new_null()) == NULL)
3903 return 0;
3904 for (i = 0; i < sk_X509_NAME_num(src); i++) {
3905 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
3906 if (xn == NULL) {
3907 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3908 return 0;
3909 }
3910 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
3911 X509_NAME_free(xn);
3912 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3913 return 0;
3914 }
3915 }
3916 *dst = sk;
3917
3918 return 1;
3919 }
3920
SSL_dup(SSL * s)3921 SSL *SSL_dup(SSL *s)
3922 {
3923 SSL *ret;
3924 int i;
3925
3926 /* If we're not quiescent, just up_ref! */
3927 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3928 CRYPTO_UP_REF(&s->references, &i, s->lock);
3929 return s;
3930 }
3931
3932 /*
3933 * Otherwise, copy configuration state, and session if set.
3934 */
3935 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3936 return NULL;
3937
3938 if (s->session != NULL) {
3939 /*
3940 * Arranges to share the same session via up_ref. This "copies"
3941 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3942 */
3943 if (!SSL_copy_session_id(ret, s))
3944 goto err;
3945 } else {
3946 /*
3947 * No session has been established yet, so we have to expect that
3948 * s->cert or ret->cert will be changed later -- they should not both
3949 * point to the same object, and thus we can't use
3950 * SSL_copy_session_id.
3951 */
3952 if (!SSL_set_ssl_method(ret, s->method))
3953 goto err;
3954
3955 if (s->cert != NULL) {
3956 ssl_cert_free(ret->cert);
3957 ret->cert = ssl_cert_dup(s->cert);
3958 if (ret->cert == NULL)
3959 goto err;
3960 }
3961
3962 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3963 (int)s->sid_ctx_length))
3964 goto err;
3965 }
3966
3967 if (!ssl_dane_dup(ret, s))
3968 goto err;
3969 ret->version = s->version;
3970 ret->options = s->options;
3971 ret->min_proto_version = s->min_proto_version;
3972 ret->max_proto_version = s->max_proto_version;
3973 ret->mode = s->mode;
3974 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3975 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3976 ret->msg_callback = s->msg_callback;
3977 ret->msg_callback_arg = s->msg_callback_arg;
3978 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3979 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3980 ret->generate_session_id = s->generate_session_id;
3981
3982 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3983
3984 /* copy app data, a little dangerous perhaps */
3985 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3986 goto err;
3987
3988 ret->server = s->server;
3989 if (s->handshake_func) {
3990 if (s->server)
3991 SSL_set_accept_state(ret);
3992 else
3993 SSL_set_connect_state(ret);
3994 }
3995 ret->shutdown = s->shutdown;
3996 ret->hit = s->hit;
3997
3998 ret->default_passwd_callback = s->default_passwd_callback;
3999 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
4000
4001 X509_VERIFY_PARAM_inherit(ret->param, s->param);
4002
4003 /* dup the cipher_list and cipher_list_by_id stacks */
4004 if (s->cipher_list != NULL) {
4005 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
4006 goto err;
4007 }
4008 if (s->cipher_list_by_id != NULL)
4009 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
4010 == NULL)
4011 goto err;
4012
4013 /* Dup the client_CA list */
4014 if (!dup_ca_names(&ret->ca_names, s->ca_names)
4015 || !dup_ca_names(&ret->client_ca_names, s->client_ca_names))
4016 goto err;
4017
4018 return ret;
4019
4020 err:
4021 SSL_free(ret);
4022 return NULL;
4023 }
4024
ssl_clear_cipher_ctx(SSL * s)4025 void ssl_clear_cipher_ctx(SSL *s)
4026 {
4027 if (s->enc_read_ctx != NULL) {
4028 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4029 s->enc_read_ctx = NULL;
4030 }
4031 if (s->enc_write_ctx != NULL) {
4032 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4033 s->enc_write_ctx = NULL;
4034 }
4035 #ifndef OPENSSL_NO_COMP
4036 COMP_CTX_free(s->expand);
4037 s->expand = NULL;
4038 COMP_CTX_free(s->compress);
4039 s->compress = NULL;
4040 #endif
4041 }
4042
SSL_get_certificate(const SSL * s)4043 X509 *SSL_get_certificate(const SSL *s)
4044 {
4045 if (s->cert != NULL)
4046 return s->cert->key->x509;
4047 else
4048 return NULL;
4049 }
4050
SSL_get_privatekey(const SSL * s)4051 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4052 {
4053 if (s->cert != NULL)
4054 return s->cert->key->privatekey;
4055 else
4056 return NULL;
4057 }
4058
SSL_CTX_get0_certificate(const SSL_CTX * ctx)4059 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4060 {
4061 if (ctx->cert != NULL)
4062 return ctx->cert->key->x509;
4063 else
4064 return NULL;
4065 }
4066
SSL_CTX_get0_privatekey(const SSL_CTX * ctx)4067 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4068 {
4069 if (ctx->cert != NULL)
4070 return ctx->cert->key->privatekey;
4071 else
4072 return NULL;
4073 }
4074
SSL_get_current_cipher(const SSL * s)4075 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4076 {
4077 if ((s->session != NULL) && (s->session->cipher != NULL))
4078 return s->session->cipher;
4079 return NULL;
4080 }
4081
SSL_get_pending_cipher(const SSL * s)4082 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4083 {
4084 return s->s3->tmp.new_cipher;
4085 }
4086
SSL_get_current_compression(const SSL * s)4087 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4088 {
4089 #ifndef OPENSSL_NO_COMP
4090 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
4091 #else
4092 return NULL;
4093 #endif
4094 }
4095
SSL_get_current_expansion(const SSL * s)4096 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4097 {
4098 #ifndef OPENSSL_NO_COMP
4099 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
4100 #else
4101 return NULL;
4102 #endif
4103 }
4104
ssl_init_wbio_buffer(SSL * s)4105 int ssl_init_wbio_buffer(SSL *s)
4106 {
4107 BIO *bbio;
4108
4109 if (s->bbio != NULL) {
4110 /* Already buffered. */
4111 return 1;
4112 }
4113
4114 bbio = BIO_new(BIO_f_buffer());
4115 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4116 BIO_free(bbio);
4117 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
4118 return 0;
4119 }
4120 s->bbio = bbio;
4121 s->wbio = BIO_push(bbio, s->wbio);
4122
4123 return 1;
4124 }
4125
ssl_free_wbio_buffer(SSL * s)4126 int ssl_free_wbio_buffer(SSL *s)
4127 {
4128 /* callers ensure s is never null */
4129 if (s->bbio == NULL)
4130 return 1;
4131
4132 s->wbio = BIO_pop(s->wbio);
4133 BIO_free(s->bbio);
4134 s->bbio = NULL;
4135
4136 return 1;
4137 }
4138
SSL_CTX_set_quiet_shutdown(SSL_CTX * ctx,int mode)4139 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4140 {
4141 ctx->quiet_shutdown = mode;
4142 }
4143
SSL_CTX_get_quiet_shutdown(const SSL_CTX * ctx)4144 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4145 {
4146 return ctx->quiet_shutdown;
4147 }
4148
SSL_set_quiet_shutdown(SSL * s,int mode)4149 void SSL_set_quiet_shutdown(SSL *s, int mode)
4150 {
4151 s->quiet_shutdown = mode;
4152 }
4153
SSL_get_quiet_shutdown(const SSL * s)4154 int SSL_get_quiet_shutdown(const SSL *s)
4155 {
4156 return s->quiet_shutdown;
4157 }
4158
SSL_set_shutdown(SSL * s,int mode)4159 void SSL_set_shutdown(SSL *s, int mode)
4160 {
4161 s->shutdown = mode;
4162 }
4163
SSL_get_shutdown(const SSL * s)4164 int SSL_get_shutdown(const SSL *s)
4165 {
4166 return s->shutdown;
4167 }
4168
SSL_version(const SSL * s)4169 int SSL_version(const SSL *s)
4170 {
4171 return s->version;
4172 }
4173
SSL_client_version(const SSL * s)4174 int SSL_client_version(const SSL *s)
4175 {
4176 return s->client_version;
4177 }
4178
SSL_get_SSL_CTX(const SSL * ssl)4179 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4180 {
4181 return ssl->ctx;
4182 }
4183
SSL_set_SSL_CTX(SSL * ssl,SSL_CTX * ctx)4184 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4185 {
4186 CERT *new_cert;
4187 if (ssl->ctx == ctx)
4188 return ssl->ctx;
4189 if (ctx == NULL)
4190 ctx = ssl->session_ctx;
4191 new_cert = ssl_cert_dup(ctx->cert);
4192 if (new_cert == NULL) {
4193 return NULL;
4194 }
4195
4196 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
4197 ssl_cert_free(new_cert);
4198 return NULL;
4199 }
4200
4201 ssl_cert_free(ssl->cert);
4202 ssl->cert = new_cert;
4203
4204 /*
4205 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4206 * so setter APIs must prevent invalid lengths from entering the system.
4207 */
4208 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
4209 return NULL;
4210
4211 /*
4212 * If the session ID context matches that of the parent SSL_CTX,
4213 * inherit it from the new SSL_CTX as well. If however the context does
4214 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4215 * leave it unchanged.
4216 */
4217 if ((ssl->ctx != NULL) &&
4218 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4219 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
4220 ssl->sid_ctx_length = ctx->sid_ctx_length;
4221 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
4222 }
4223
4224 SSL_CTX_up_ref(ctx);
4225 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4226 ssl->ctx = ctx;
4227
4228 return ssl->ctx;
4229 }
4230
SSL_CTX_set_default_verify_paths(SSL_CTX * ctx)4231 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4232 {
4233 return X509_STORE_set_default_paths(ctx->cert_store);
4234 }
4235
SSL_CTX_set_default_verify_dir(SSL_CTX * ctx)4236 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4237 {
4238 X509_LOOKUP *lookup;
4239
4240 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4241 if (lookup == NULL)
4242 return 0;
4243 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4244
4245 /* Clear any errors if the default directory does not exist */
4246 ERR_clear_error();
4247
4248 return 1;
4249 }
4250
SSL_CTX_set_default_verify_file(SSL_CTX * ctx)4251 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4252 {
4253 X509_LOOKUP *lookup;
4254
4255 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4256 if (lookup == NULL)
4257 return 0;
4258
4259 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
4260
4261 /* Clear any errors if the default file does not exist */
4262 ERR_clear_error();
4263
4264 return 1;
4265 }
4266
SSL_CTX_load_verify_locations(SSL_CTX * ctx,const char * CAfile,const char * CApath)4267 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
4268 const char *CApath)
4269 {
4270 return X509_STORE_load_locations(ctx->cert_store, CAfile, CApath);
4271 }
4272
SSL_set_info_callback(SSL * ssl,void (* cb)(const SSL * ssl,int type,int val))4273 void SSL_set_info_callback(SSL *ssl,
4274 void (*cb) (const SSL *ssl, int type, int val))
4275 {
4276 ssl->info_callback = cb;
4277 }
4278
4279 /*
4280 * One compiler (Diab DCC) doesn't like argument names in returned function
4281 * pointer.
4282 */
SSL_get_info_callback(const SSL * ssl)4283 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4284 int /* type */ ,
4285 int /* val */ ) {
4286 return ssl->info_callback;
4287 }
4288
SSL_set_verify_result(SSL * ssl,long arg)4289 void SSL_set_verify_result(SSL *ssl, long arg)
4290 {
4291 ssl->verify_result = arg;
4292 }
4293
SSL_get_verify_result(const SSL * ssl)4294 long SSL_get_verify_result(const SSL *ssl)
4295 {
4296 return ssl->verify_result;
4297 }
4298
SSL_get_client_random(const SSL * ssl,unsigned char * out,size_t outlen)4299 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
4300 {
4301 if (outlen == 0)
4302 return sizeof(ssl->s3->client_random);
4303 if (outlen > sizeof(ssl->s3->client_random))
4304 outlen = sizeof(ssl->s3->client_random);
4305 memcpy(out, ssl->s3->client_random, outlen);
4306 return outlen;
4307 }
4308
SSL_get_server_random(const SSL * ssl,unsigned char * out,size_t outlen)4309 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
4310 {
4311 if (outlen == 0)
4312 return sizeof(ssl->s3->server_random);
4313 if (outlen > sizeof(ssl->s3->server_random))
4314 outlen = sizeof(ssl->s3->server_random);
4315 memcpy(out, ssl->s3->server_random, outlen);
4316 return outlen;
4317 }
4318
SSL_SESSION_get_master_key(const SSL_SESSION * session,unsigned char * out,size_t outlen)4319 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
4320 unsigned char *out, size_t outlen)
4321 {
4322 if (outlen == 0)
4323 return session->master_key_length;
4324 if (outlen > session->master_key_length)
4325 outlen = session->master_key_length;
4326 memcpy(out, session->master_key, outlen);
4327 return outlen;
4328 }
4329
SSL_SESSION_set1_master_key(SSL_SESSION * sess,const unsigned char * in,size_t len)4330 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
4331 size_t len)
4332 {
4333 if (len > sizeof(sess->master_key))
4334 return 0;
4335
4336 memcpy(sess->master_key, in, len);
4337 sess->master_key_length = len;
4338 return 1;
4339 }
4340
4341
SSL_set_ex_data(SSL * s,int idx,void * arg)4342 int SSL_set_ex_data(SSL *s, int idx, void *arg)
4343 {
4344 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4345 }
4346
SSL_get_ex_data(const SSL * s,int idx)4347 void *SSL_get_ex_data(const SSL *s, int idx)
4348 {
4349 return CRYPTO_get_ex_data(&s->ex_data, idx);
4350 }
4351
SSL_CTX_set_ex_data(SSL_CTX * s,int idx,void * arg)4352 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4353 {
4354 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4355 }
4356
SSL_CTX_get_ex_data(const SSL_CTX * s,int idx)4357 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4358 {
4359 return CRYPTO_get_ex_data(&s->ex_data, idx);
4360 }
4361
SSL_CTX_get_cert_store(const SSL_CTX * ctx)4362 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
4363 {
4364 return ctx->cert_store;
4365 }
4366
SSL_CTX_set_cert_store(SSL_CTX * ctx,X509_STORE * store)4367 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4368 {
4369 X509_STORE_free(ctx->cert_store);
4370 ctx->cert_store = store;
4371 }
4372
SSL_CTX_set1_cert_store(SSL_CTX * ctx,X509_STORE * store)4373 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4374 {
4375 if (store != NULL)
4376 X509_STORE_up_ref(store);
4377 SSL_CTX_set_cert_store(ctx, store);
4378 }
4379
SSL_want(const SSL * s)4380 int SSL_want(const SSL *s)
4381 {
4382 return s->rwstate;
4383 }
4384
4385 /**
4386 * \brief Set the callback for generating temporary DH keys.
4387 * \param ctx the SSL context.
4388 * \param dh the callback
4389 */
4390
4391 #ifndef OPENSSL_NO_DH
SSL_CTX_set_tmp_dh_callback(SSL_CTX * ctx,DH * (* dh)(SSL * ssl,int is_export,int keylength))4392 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
4393 DH *(*dh) (SSL *ssl, int is_export,
4394 int keylength))
4395 {
4396 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4397 }
4398
SSL_set_tmp_dh_callback(SSL * ssl,DH * (* dh)(SSL * ssl,int is_export,int keylength))4399 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
4400 int keylength))
4401 {
4402 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4403 }
4404 #endif
4405
4406 #ifndef OPENSSL_NO_PSK
SSL_CTX_use_psk_identity_hint(SSL_CTX * ctx,const char * identity_hint)4407 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
4408 {
4409 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4410 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4411 return 0;
4412 }
4413 OPENSSL_free(ctx->cert->psk_identity_hint);
4414 if (identity_hint != NULL) {
4415 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4416 if (ctx->cert->psk_identity_hint == NULL)
4417 return 0;
4418 } else
4419 ctx->cert->psk_identity_hint = NULL;
4420 return 1;
4421 }
4422
SSL_use_psk_identity_hint(SSL * s,const char * identity_hint)4423 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
4424 {
4425 if (s == NULL)
4426 return 0;
4427
4428 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4429 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4430 return 0;
4431 }
4432 OPENSSL_free(s->cert->psk_identity_hint);
4433 if (identity_hint != NULL) {
4434 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4435 if (s->cert->psk_identity_hint == NULL)
4436 return 0;
4437 } else
4438 s->cert->psk_identity_hint = NULL;
4439 return 1;
4440 }
4441
SSL_get_psk_identity_hint(const SSL * s)4442 const char *SSL_get_psk_identity_hint(const SSL *s)
4443 {
4444 if (s == NULL || s->session == NULL)
4445 return NULL;
4446 return s->session->psk_identity_hint;
4447 }
4448
SSL_get_psk_identity(const SSL * s)4449 const char *SSL_get_psk_identity(const SSL *s)
4450 {
4451 if (s == NULL || s->session == NULL)
4452 return NULL;
4453 return s->session->psk_identity;
4454 }
4455
SSL_set_psk_client_callback(SSL * s,SSL_psk_client_cb_func cb)4456 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
4457 {
4458 s->psk_client_callback = cb;
4459 }
4460
SSL_CTX_set_psk_client_callback(SSL_CTX * ctx,SSL_psk_client_cb_func cb)4461 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
4462 {
4463 ctx->psk_client_callback = cb;
4464 }
4465
SSL_set_psk_server_callback(SSL * s,SSL_psk_server_cb_func cb)4466 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
4467 {
4468 s->psk_server_callback = cb;
4469 }
4470
SSL_CTX_set_psk_server_callback(SSL_CTX * ctx,SSL_psk_server_cb_func cb)4471 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
4472 {
4473 ctx->psk_server_callback = cb;
4474 }
4475 #endif
4476
SSL_set_psk_find_session_callback(SSL * s,SSL_psk_find_session_cb_func cb)4477 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4478 {
4479 s->psk_find_session_cb = cb;
4480 }
4481
SSL_CTX_set_psk_find_session_callback(SSL_CTX * ctx,SSL_psk_find_session_cb_func cb)4482 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4483 SSL_psk_find_session_cb_func cb)
4484 {
4485 ctx->psk_find_session_cb = cb;
4486 }
4487
SSL_set_psk_use_session_callback(SSL * s,SSL_psk_use_session_cb_func cb)4488 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4489 {
4490 s->psk_use_session_cb = cb;
4491 }
4492
SSL_CTX_set_psk_use_session_callback(SSL_CTX * ctx,SSL_psk_use_session_cb_func cb)4493 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4494 SSL_psk_use_session_cb_func cb)
4495 {
4496 ctx->psk_use_session_cb = cb;
4497 }
4498
SSL_CTX_set_msg_callback(SSL_CTX * ctx,void (* cb)(int write_p,int version,int content_type,const void * buf,size_t len,SSL * ssl,void * arg))4499 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4500 void (*cb) (int write_p, int version,
4501 int content_type, const void *buf,
4502 size_t len, SSL *ssl, void *arg))
4503 {
4504 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4505 }
4506
SSL_set_msg_callback(SSL * ssl,void (* cb)(int write_p,int version,int content_type,const void * buf,size_t len,SSL * ssl,void * arg))4507 void SSL_set_msg_callback(SSL *ssl,
4508 void (*cb) (int write_p, int version,
4509 int content_type, const void *buf,
4510 size_t len, SSL *ssl, void *arg))
4511 {
4512 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4513 }
4514
SSL_CTX_set_not_resumable_session_callback(SSL_CTX * ctx,int (* cb)(SSL * ssl,int is_forward_secure))4515 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4516 int (*cb) (SSL *ssl,
4517 int
4518 is_forward_secure))
4519 {
4520 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4521 (void (*)(void))cb);
4522 }
4523
SSL_set_not_resumable_session_callback(SSL * ssl,int (* cb)(SSL * ssl,int is_forward_secure))4524 void SSL_set_not_resumable_session_callback(SSL *ssl,
4525 int (*cb) (SSL *ssl,
4526 int is_forward_secure))
4527 {
4528 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4529 (void (*)(void))cb);
4530 }
4531
SSL_CTX_set_record_padding_callback(SSL_CTX * ctx,size_t (* cb)(SSL * ssl,int type,size_t len,void * arg))4532 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4533 size_t (*cb) (SSL *ssl, int type,
4534 size_t len, void *arg))
4535 {
4536 ctx->record_padding_cb = cb;
4537 }
4538
SSL_CTX_set_record_padding_callback_arg(SSL_CTX * ctx,void * arg)4539 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4540 {
4541 ctx->record_padding_arg = arg;
4542 }
4543
SSL_CTX_get_record_padding_callback_arg(const SSL_CTX * ctx)4544 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
4545 {
4546 return ctx->record_padding_arg;
4547 }
4548
SSL_CTX_set_block_padding(SSL_CTX * ctx,size_t block_size)4549 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4550 {
4551 /* block size of 0 or 1 is basically no padding */
4552 if (block_size == 1)
4553 ctx->block_padding = 0;
4554 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4555 ctx->block_padding = block_size;
4556 else
4557 return 0;
4558 return 1;
4559 }
4560
SSL_set_record_padding_callback(SSL * ssl,size_t (* cb)(SSL * ssl,int type,size_t len,void * arg))4561 int SSL_set_record_padding_callback(SSL *ssl,
4562 size_t (*cb) (SSL *ssl, int type,
4563 size_t len, void *arg))
4564 {
4565 BIO *b;
4566
4567 b = SSL_get_wbio(ssl);
4568 if (b == NULL || !BIO_get_ktls_send(b)) {
4569 ssl->record_padding_cb = cb;
4570 return 1;
4571 }
4572 return 0;
4573 }
4574
SSL_set_record_padding_callback_arg(SSL * ssl,void * arg)4575 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4576 {
4577 ssl->record_padding_arg = arg;
4578 }
4579
SSL_get_record_padding_callback_arg(const SSL * ssl)4580 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
4581 {
4582 return ssl->record_padding_arg;
4583 }
4584
SSL_set_block_padding(SSL * ssl,size_t block_size)4585 int SSL_set_block_padding(SSL *ssl, size_t block_size)
4586 {
4587 /* block size of 0 or 1 is basically no padding */
4588 if (block_size == 1)
4589 ssl->block_padding = 0;
4590 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4591 ssl->block_padding = block_size;
4592 else
4593 return 0;
4594 return 1;
4595 }
4596
SSL_set_num_tickets(SSL * s,size_t num_tickets)4597 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
4598 {
4599 s->num_tickets = num_tickets;
4600
4601 return 1;
4602 }
4603
SSL_get_num_tickets(const SSL * s)4604 size_t SSL_get_num_tickets(const SSL *s)
4605 {
4606 return s->num_tickets;
4607 }
4608
SSL_CTX_set_num_tickets(SSL_CTX * ctx,size_t num_tickets)4609 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
4610 {
4611 ctx->num_tickets = num_tickets;
4612
4613 return 1;
4614 }
4615
SSL_CTX_get_num_tickets(const SSL_CTX * ctx)4616 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
4617 {
4618 return ctx->num_tickets;
4619 }
4620
4621 /*
4622 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4623 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4624 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4625 * Returns the newly allocated ctx;
4626 */
4627
ssl_replace_hash(EVP_MD_CTX ** hash,const EVP_MD * md)4628 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4629 {
4630 ssl_clear_hash_ctx(hash);
4631 *hash = EVP_MD_CTX_new();
4632 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4633 EVP_MD_CTX_free(*hash);
4634 *hash = NULL;
4635 return NULL;
4636 }
4637 return *hash;
4638 }
4639
ssl_clear_hash_ctx(EVP_MD_CTX ** hash)4640 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4641 {
4642
4643 EVP_MD_CTX_free(*hash);
4644 *hash = NULL;
4645 }
4646
4647 /* Retrieve handshake hashes */
ssl_handshake_hash(SSL * s,unsigned char * out,size_t outlen,size_t * hashlen)4648 int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4649 size_t *hashlen)
4650 {
4651 EVP_MD_CTX *ctx = NULL;
4652 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
4653 int hashleni = EVP_MD_CTX_size(hdgst);
4654 int ret = 0;
4655
4656 if (hashleni < 0 || (size_t)hashleni > outlen) {
4657 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4658 ERR_R_INTERNAL_ERROR);
4659 goto err;
4660 }
4661
4662 ctx = EVP_MD_CTX_new();
4663 if (ctx == NULL) {
4664 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4665 ERR_R_INTERNAL_ERROR);
4666 goto err;
4667 }
4668
4669 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4670 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4671 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4672 ERR_R_INTERNAL_ERROR);
4673 goto err;
4674 }
4675
4676 *hashlen = hashleni;
4677
4678 ret = 1;
4679 err:
4680 EVP_MD_CTX_free(ctx);
4681 return ret;
4682 }
4683
SSL_session_reused(const SSL * s)4684 int SSL_session_reused(const SSL *s)
4685 {
4686 return s->hit;
4687 }
4688
SSL_is_server(const SSL * s)4689 int SSL_is_server(const SSL *s)
4690 {
4691 return s->server;
4692 }
4693
4694 #if OPENSSL_API_COMPAT < 0x10100000L
SSL_set_debug(SSL * s,int debug)4695 void SSL_set_debug(SSL *s, int debug)
4696 {
4697 /* Old function was do-nothing anyway... */
4698 (void)s;
4699 (void)debug;
4700 }
4701 #endif
4702
SSL_set_security_level(SSL * s,int level)4703 void SSL_set_security_level(SSL *s, int level)
4704 {
4705 s->cert->sec_level = level;
4706 }
4707
SSL_get_security_level(const SSL * s)4708 int SSL_get_security_level(const SSL *s)
4709 {
4710 return s->cert->sec_level;
4711 }
4712
SSL_set_security_callback(SSL * s,int (* cb)(const SSL * s,const SSL_CTX * ctx,int op,int bits,int nid,void * other,void * ex))4713 void SSL_set_security_callback(SSL *s,
4714 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4715 int op, int bits, int nid,
4716 void *other, void *ex))
4717 {
4718 s->cert->sec_cb = cb;
4719 }
4720
SSL_get_security_callback(const SSL * s)4721 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4722 const SSL_CTX *ctx, int op,
4723 int bits, int nid, void *other,
4724 void *ex) {
4725 return s->cert->sec_cb;
4726 }
4727
SSL_set0_security_ex_data(SSL * s,void * ex)4728 void SSL_set0_security_ex_data(SSL *s, void *ex)
4729 {
4730 s->cert->sec_ex = ex;
4731 }
4732
SSL_get0_security_ex_data(const SSL * s)4733 void *SSL_get0_security_ex_data(const SSL *s)
4734 {
4735 return s->cert->sec_ex;
4736 }
4737
SSL_CTX_set_security_level(SSL_CTX * ctx,int level)4738 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4739 {
4740 ctx->cert->sec_level = level;
4741 }
4742
SSL_CTX_get_security_level(const SSL_CTX * ctx)4743 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4744 {
4745 return ctx->cert->sec_level;
4746 }
4747
SSL_CTX_set_security_callback(SSL_CTX * ctx,int (* cb)(const SSL * s,const SSL_CTX * ctx,int op,int bits,int nid,void * other,void * ex))4748 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4749 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4750 int op, int bits, int nid,
4751 void *other, void *ex))
4752 {
4753 ctx->cert->sec_cb = cb;
4754 }
4755
SSL_CTX_get_security_callback(const SSL_CTX * ctx)4756 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4757 const SSL_CTX *ctx,
4758 int op, int bits,
4759 int nid,
4760 void *other,
4761 void *ex) {
4762 return ctx->cert->sec_cb;
4763 }
4764
SSL_CTX_set0_security_ex_data(SSL_CTX * ctx,void * ex)4765 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4766 {
4767 ctx->cert->sec_ex = ex;
4768 }
4769
SSL_CTX_get0_security_ex_data(const SSL_CTX * ctx)4770 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4771 {
4772 return ctx->cert->sec_ex;
4773 }
4774
4775 /*
4776 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4777 * can return unsigned long, instead of the generic long return value from the
4778 * control interface.
4779 */
SSL_CTX_get_options(const SSL_CTX * ctx)4780 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4781 {
4782 return ctx->options;
4783 }
4784
SSL_get_options(const SSL * s)4785 unsigned long SSL_get_options(const SSL *s)
4786 {
4787 return s->options;
4788 }
4789
SSL_CTX_set_options(SSL_CTX * ctx,unsigned long op)4790 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4791 {
4792 return ctx->options |= op;
4793 }
4794
SSL_set_options(SSL * s,unsigned long op)4795 unsigned long SSL_set_options(SSL *s, unsigned long op)
4796 {
4797 return s->options |= op;
4798 }
4799
SSL_CTX_clear_options(SSL_CTX * ctx,unsigned long op)4800 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4801 {
4802 return ctx->options &= ~op;
4803 }
4804
SSL_clear_options(SSL * s,unsigned long op)4805 unsigned long SSL_clear_options(SSL *s, unsigned long op)
4806 {
4807 return s->options &= ~op;
4808 }
4809
STACK_OF(X509)4810 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4811 {
4812 return s->verified_chain;
4813 }
4814
4815 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4816
4817 #ifndef OPENSSL_NO_CT
4818
4819 /*
4820 * Moves SCTs from the |src| stack to the |dst| stack.
4821 * The source of each SCT will be set to |origin|.
4822 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4823 * the caller.
4824 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4825 */
ct_move_scts(STACK_OF (SCT)** dst,STACK_OF (SCT)* src,sct_source_t origin)4826 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4827 sct_source_t origin)
4828 {
4829 int scts_moved = 0;
4830 SCT *sct = NULL;
4831
4832 if (*dst == NULL) {
4833 *dst = sk_SCT_new_null();
4834 if (*dst == NULL) {
4835 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4836 goto err;
4837 }
4838 }
4839
4840 while ((sct = sk_SCT_pop(src)) != NULL) {
4841 if (SCT_set_source(sct, origin) != 1)
4842 goto err;
4843
4844 if (sk_SCT_push(*dst, sct) <= 0)
4845 goto err;
4846 scts_moved += 1;
4847 }
4848
4849 return scts_moved;
4850 err:
4851 if (sct != NULL)
4852 sk_SCT_push(src, sct); /* Put the SCT back */
4853 return -1;
4854 }
4855
4856 /*
4857 * Look for data collected during ServerHello and parse if found.
4858 * Returns the number of SCTs extracted.
4859 */
ct_extract_tls_extension_scts(SSL * s)4860 static int ct_extract_tls_extension_scts(SSL *s)
4861 {
4862 int scts_extracted = 0;
4863
4864 if (s->ext.scts != NULL) {
4865 const unsigned char *p = s->ext.scts;
4866 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
4867
4868 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4869
4870 SCT_LIST_free(scts);
4871 }
4872
4873 return scts_extracted;
4874 }
4875
4876 /*
4877 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4878 * contains an SCT X509 extension. They will be stored in |s->scts|.
4879 * Returns:
4880 * - The number of SCTs extracted, assuming an OCSP response exists.
4881 * - 0 if no OCSP response exists or it contains no SCTs.
4882 * - A negative integer if an error occurs.
4883 */
ct_extract_ocsp_response_scts(SSL * s)4884 static int ct_extract_ocsp_response_scts(SSL *s)
4885 {
4886 # ifndef OPENSSL_NO_OCSP
4887 int scts_extracted = 0;
4888 const unsigned char *p;
4889 OCSP_BASICRESP *br = NULL;
4890 OCSP_RESPONSE *rsp = NULL;
4891 STACK_OF(SCT) *scts = NULL;
4892 int i;
4893
4894 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
4895 goto err;
4896
4897 p = s->ext.ocsp.resp;
4898 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
4899 if (rsp == NULL)
4900 goto err;
4901
4902 br = OCSP_response_get1_basic(rsp);
4903 if (br == NULL)
4904 goto err;
4905
4906 for (i = 0; i < OCSP_resp_count(br); ++i) {
4907 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4908
4909 if (single == NULL)
4910 continue;
4911
4912 scts =
4913 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4914 scts_extracted =
4915 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
4916 if (scts_extracted < 0)
4917 goto err;
4918 }
4919 err:
4920 SCT_LIST_free(scts);
4921 OCSP_BASICRESP_free(br);
4922 OCSP_RESPONSE_free(rsp);
4923 return scts_extracted;
4924 # else
4925 /* Behave as if no OCSP response exists */
4926 return 0;
4927 # endif
4928 }
4929
4930 /*
4931 * Attempts to extract SCTs from the peer certificate.
4932 * Return the number of SCTs extracted, or a negative integer if an error
4933 * occurs.
4934 */
ct_extract_x509v3_extension_scts(SSL * s)4935 static int ct_extract_x509v3_extension_scts(SSL *s)
4936 {
4937 int scts_extracted = 0;
4938 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4939
4940 if (cert != NULL) {
4941 STACK_OF(SCT) *scts =
4942 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4943
4944 scts_extracted =
4945 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4946
4947 SCT_LIST_free(scts);
4948 }
4949
4950 return scts_extracted;
4951 }
4952
4953 /*
4954 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4955 * response (if it exists) and X509v3 extensions in the certificate.
4956 * Returns NULL if an error occurs.
4957 */
STACK_OF(SCT)4958 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4959 {
4960 if (!s->scts_parsed) {
4961 if (ct_extract_tls_extension_scts(s) < 0 ||
4962 ct_extract_ocsp_response_scts(s) < 0 ||
4963 ct_extract_x509v3_extension_scts(s) < 0)
4964 goto err;
4965
4966 s->scts_parsed = 1;
4967 }
4968 return s->scts;
4969 err:
4970 return NULL;
4971 }
4972
ct_permissive(const CT_POLICY_EVAL_CTX * ctx,const STACK_OF (SCT)* scts,void * unused_arg)4973 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
4974 const STACK_OF(SCT) *scts, void *unused_arg)
4975 {
4976 return 1;
4977 }
4978
ct_strict(const CT_POLICY_EVAL_CTX * ctx,const STACK_OF (SCT)* scts,void * unused_arg)4979 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
4980 const STACK_OF(SCT) *scts, void *unused_arg)
4981 {
4982 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4983 int i;
4984
4985 for (i = 0; i < count; ++i) {
4986 SCT *sct = sk_SCT_value(scts, i);
4987 int status = SCT_get_validation_status(sct);
4988
4989 if (status == SCT_VALIDATION_STATUS_VALID)
4990 return 1;
4991 }
4992 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4993 return 0;
4994 }
4995
SSL_set_ct_validation_callback(SSL * s,ssl_ct_validation_cb callback,void * arg)4996 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4997 void *arg)
4998 {
4999 /*
5000 * Since code exists that uses the custom extension handler for CT, look
5001 * for this and throw an error if they have already registered to use CT.
5002 */
5003 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5004 TLSEXT_TYPE_signed_certificate_timestamp))
5005 {
5006 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
5007 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5008 return 0;
5009 }
5010
5011 if (callback != NULL) {
5012 /*
5013 * If we are validating CT, then we MUST accept SCTs served via OCSP
5014 */
5015 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5016 return 0;
5017 }
5018
5019 s->ct_validation_callback = callback;
5020 s->ct_validation_callback_arg = arg;
5021
5022 return 1;
5023 }
5024
SSL_CTX_set_ct_validation_callback(SSL_CTX * ctx,ssl_ct_validation_cb callback,void * arg)5025 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5026 ssl_ct_validation_cb callback, void *arg)
5027 {
5028 /*
5029 * Since code exists that uses the custom extension handler for CT, look for
5030 * this and throw an error if they have already registered to use CT.
5031 */
5032 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5033 TLSEXT_TYPE_signed_certificate_timestamp))
5034 {
5035 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
5036 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5037 return 0;
5038 }
5039
5040 ctx->ct_validation_callback = callback;
5041 ctx->ct_validation_callback_arg = arg;
5042 return 1;
5043 }
5044
SSL_ct_is_enabled(const SSL * s)5045 int SSL_ct_is_enabled(const SSL *s)
5046 {
5047 return s->ct_validation_callback != NULL;
5048 }
5049
SSL_CTX_ct_is_enabled(const SSL_CTX * ctx)5050 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5051 {
5052 return ctx->ct_validation_callback != NULL;
5053 }
5054
ssl_validate_ct(SSL * s)5055 int ssl_validate_ct(SSL *s)
5056 {
5057 int ret = 0;
5058 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5059 X509 *issuer;
5060 SSL_DANE *dane = &s->dane;
5061 CT_POLICY_EVAL_CTX *ctx = NULL;
5062 const STACK_OF(SCT) *scts;
5063
5064 /*
5065 * If no callback is set, the peer is anonymous, or its chain is invalid,
5066 * skip SCT validation - just return success. Applications that continue
5067 * handshakes without certificates, with unverified chains, or pinned leaf
5068 * certificates are outside the scope of the WebPKI and CT.
5069 *
5070 * The above exclusions notwithstanding the vast majority of peers will
5071 * have rather ordinary certificate chains validated by typical
5072 * applications that perform certificate verification and therefore will
5073 * process SCTs when enabled.
5074 */
5075 if (s->ct_validation_callback == NULL || cert == NULL ||
5076 s->verify_result != X509_V_OK ||
5077 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
5078 return 1;
5079
5080 /*
5081 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5082 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5083 */
5084 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5085 switch (dane->mtlsa->usage) {
5086 case DANETLS_USAGE_DANE_TA:
5087 case DANETLS_USAGE_DANE_EE:
5088 return 1;
5089 }
5090 }
5091
5092 ctx = CT_POLICY_EVAL_CTX_new();
5093 if (ctx == NULL) {
5094 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_VALIDATE_CT,
5095 ERR_R_MALLOC_FAILURE);
5096 goto end;
5097 }
5098
5099 issuer = sk_X509_value(s->verified_chain, 1);
5100 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5101 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5102 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
5103 CT_POLICY_EVAL_CTX_set_time(
5104 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
5105
5106 scts = SSL_get0_peer_scts(s);
5107
5108 /*
5109 * This function returns success (> 0) only when all the SCTs are valid, 0
5110 * when some are invalid, and < 0 on various internal errors (out of
5111 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5112 * reason to abort the handshake, that decision is up to the callback.
5113 * Therefore, we error out only in the unexpected case that the return
5114 * value is negative.
5115 *
5116 * XXX: One might well argue that the return value of this function is an
5117 * unfortunate design choice. Its job is only to determine the validation
5118 * status of each of the provided SCTs. So long as it correctly separates
5119 * the wheat from the chaff it should return success. Failure in this case
5120 * ought to correspond to an inability to carry out its duties.
5121 */
5122 if (SCT_LIST_validate(scts, ctx) < 0) {
5123 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5124 SSL_R_SCT_VERIFICATION_FAILED);
5125 goto end;
5126 }
5127
5128 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
5129 if (ret < 0)
5130 ret = 0; /* This function returns 0 on failure */
5131 if (!ret)
5132 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5133 SSL_R_CALLBACK_FAILED);
5134
5135 end:
5136 CT_POLICY_EVAL_CTX_free(ctx);
5137 /*
5138 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5139 * failure return code here. Also the application may wish the complete
5140 * the handshake, and then disconnect cleanly at a higher layer, after
5141 * checking the verification status of the completed connection.
5142 *
5143 * We therefore force a certificate verification failure which will be
5144 * visible via SSL_get_verify_result() and cached as part of any resumed
5145 * session.
5146 *
5147 * Note: the permissive callback is for information gathering only, always
5148 * returns success, and does not affect verification status. Only the
5149 * strict callback or a custom application-specified callback can trigger
5150 * connection failure or record a verification error.
5151 */
5152 if (ret <= 0)
5153 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
5154 return ret;
5155 }
5156
SSL_CTX_enable_ct(SSL_CTX * ctx,int validation_mode)5157 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
5158 {
5159 switch (validation_mode) {
5160 default:
5161 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5162 return 0;
5163 case SSL_CT_VALIDATION_PERMISSIVE:
5164 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
5165 case SSL_CT_VALIDATION_STRICT:
5166 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
5167 }
5168 }
5169
SSL_enable_ct(SSL * s,int validation_mode)5170 int SSL_enable_ct(SSL *s, int validation_mode)
5171 {
5172 switch (validation_mode) {
5173 default:
5174 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5175 return 0;
5176 case SSL_CT_VALIDATION_PERMISSIVE:
5177 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
5178 case SSL_CT_VALIDATION_STRICT:
5179 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
5180 }
5181 }
5182
SSL_CTX_set_default_ctlog_list_file(SSL_CTX * ctx)5183 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
5184 {
5185 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
5186 }
5187
SSL_CTX_set_ctlog_list_file(SSL_CTX * ctx,const char * path)5188 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
5189 {
5190 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
5191 }
5192
SSL_CTX_set0_ctlog_store(SSL_CTX * ctx,CTLOG_STORE * logs)5193 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
5194 {
5195 CTLOG_STORE_free(ctx->ctlog_store);
5196 ctx->ctlog_store = logs;
5197 }
5198
SSL_CTX_get0_ctlog_store(const SSL_CTX * ctx)5199 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
5200 {
5201 return ctx->ctlog_store;
5202 }
5203
5204 #endif /* OPENSSL_NO_CT */
5205
SSL_CTX_set_client_hello_cb(SSL_CTX * c,SSL_client_hello_cb_fn cb,void * arg)5206 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
5207 void *arg)
5208 {
5209 c->client_hello_cb = cb;
5210 c->client_hello_cb_arg = arg;
5211 }
5212
SSL_client_hello_isv2(SSL * s)5213 int SSL_client_hello_isv2(SSL *s)
5214 {
5215 if (s->clienthello == NULL)
5216 return 0;
5217 return s->clienthello->isv2;
5218 }
5219
SSL_client_hello_get0_legacy_version(SSL * s)5220 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
5221 {
5222 if (s->clienthello == NULL)
5223 return 0;
5224 return s->clienthello->legacy_version;
5225 }
5226
SSL_client_hello_get0_random(SSL * s,const unsigned char ** out)5227 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
5228 {
5229 if (s->clienthello == NULL)
5230 return 0;
5231 if (out != NULL)
5232 *out = s->clienthello->random;
5233 return SSL3_RANDOM_SIZE;
5234 }
5235
SSL_client_hello_get0_session_id(SSL * s,const unsigned char ** out)5236 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
5237 {
5238 if (s->clienthello == NULL)
5239 return 0;
5240 if (out != NULL)
5241 *out = s->clienthello->session_id;
5242 return s->clienthello->session_id_len;
5243 }
5244
SSL_client_hello_get0_ciphers(SSL * s,const unsigned char ** out)5245 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
5246 {
5247 if (s->clienthello == NULL)
5248 return 0;
5249 if (out != NULL)
5250 *out = PACKET_data(&s->clienthello->ciphersuites);
5251 return PACKET_remaining(&s->clienthello->ciphersuites);
5252 }
5253
SSL_client_hello_get0_compression_methods(SSL * s,const unsigned char ** out)5254 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
5255 {
5256 if (s->clienthello == NULL)
5257 return 0;
5258 if (out != NULL)
5259 *out = s->clienthello->compressions;
5260 return s->clienthello->compressions_len;
5261 }
5262
SSL_client_hello_get1_extensions_present(SSL * s,int ** out,size_t * outlen)5263 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
5264 {
5265 RAW_EXTENSION *ext;
5266 int *present;
5267 size_t num = 0, i;
5268
5269 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5270 return 0;
5271 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5272 ext = s->clienthello->pre_proc_exts + i;
5273 if (ext->present)
5274 num++;
5275 }
5276 if (num == 0) {
5277 *out = NULL;
5278 *outlen = 0;
5279 return 1;
5280 }
5281 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
5282 SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT,
5283 ERR_R_MALLOC_FAILURE);
5284 return 0;
5285 }
5286 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5287 ext = s->clienthello->pre_proc_exts + i;
5288 if (ext->present) {
5289 if (ext->received_order >= num)
5290 goto err;
5291 present[ext->received_order] = ext->type;
5292 }
5293 }
5294 *out = present;
5295 *outlen = num;
5296 return 1;
5297 err:
5298 OPENSSL_free(present);
5299 return 0;
5300 }
5301
SSL_client_hello_get0_ext(SSL * s,unsigned int type,const unsigned char ** out,size_t * outlen)5302 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
5303 size_t *outlen)
5304 {
5305 size_t i;
5306 RAW_EXTENSION *r;
5307
5308 if (s->clienthello == NULL)
5309 return 0;
5310 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5311 r = s->clienthello->pre_proc_exts + i;
5312 if (r->present && r->type == type) {
5313 if (out != NULL)
5314 *out = PACKET_data(&r->data);
5315 if (outlen != NULL)
5316 *outlen = PACKET_remaining(&r->data);
5317 return 1;
5318 }
5319 }
5320 return 0;
5321 }
5322
SSL_free_buffers(SSL * ssl)5323 int SSL_free_buffers(SSL *ssl)
5324 {
5325 RECORD_LAYER *rl = &ssl->rlayer;
5326
5327 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5328 return 0;
5329
5330 RECORD_LAYER_release(rl);
5331 return 1;
5332 }
5333
SSL_alloc_buffers(SSL * ssl)5334 int SSL_alloc_buffers(SSL *ssl)
5335 {
5336 return ssl3_setup_buffers(ssl);
5337 }
5338
SSL_CTX_set_keylog_callback(SSL_CTX * ctx,SSL_CTX_keylog_cb_func cb)5339 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5340 {
5341 ctx->keylog_callback = cb;
5342 }
5343
SSL_CTX_get_keylog_callback(const SSL_CTX * ctx)5344 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5345 {
5346 return ctx->keylog_callback;
5347 }
5348
nss_keylog_int(const char * prefix,SSL * ssl,const uint8_t * parameter_1,size_t parameter_1_len,const uint8_t * parameter_2,size_t parameter_2_len)5349 static int nss_keylog_int(const char *prefix,
5350 SSL *ssl,
5351 const uint8_t *parameter_1,
5352 size_t parameter_1_len,
5353 const uint8_t *parameter_2,
5354 size_t parameter_2_len)
5355 {
5356 char *out = NULL;
5357 char *cursor = NULL;
5358 size_t out_len = 0;
5359 size_t i;
5360 size_t prefix_len;
5361
5362 if (ssl->ctx->keylog_callback == NULL)
5363 return 1;
5364
5365 /*
5366 * Our output buffer will contain the following strings, rendered with
5367 * space characters in between, terminated by a NULL character: first the
5368 * prefix, then the first parameter, then the second parameter. The
5369 * meaning of each parameter depends on the specific key material being
5370 * logged. Note that the first and second parameters are encoded in
5371 * hexadecimal, so we need a buffer that is twice their lengths.
5372 */
5373 prefix_len = strlen(prefix);
5374 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
5375 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
5376 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, SSL_F_NSS_KEYLOG_INT,
5377 ERR_R_MALLOC_FAILURE);
5378 return 0;
5379 }
5380
5381 strcpy(cursor, prefix);
5382 cursor += prefix_len;
5383 *cursor++ = ' ';
5384
5385 for (i = 0; i < parameter_1_len; i++) {
5386 sprintf(cursor, "%02x", parameter_1[i]);
5387 cursor += 2;
5388 }
5389 *cursor++ = ' ';
5390
5391 for (i = 0; i < parameter_2_len; i++) {
5392 sprintf(cursor, "%02x", parameter_2[i]);
5393 cursor += 2;
5394 }
5395 *cursor = '\0';
5396
5397 ssl->ctx->keylog_callback(ssl, (const char *)out);
5398 OPENSSL_clear_free(out, out_len);
5399 return 1;
5400
5401 }
5402
ssl_log_rsa_client_key_exchange(SSL * ssl,const uint8_t * encrypted_premaster,size_t encrypted_premaster_len,const uint8_t * premaster,size_t premaster_len)5403 int ssl_log_rsa_client_key_exchange(SSL *ssl,
5404 const uint8_t *encrypted_premaster,
5405 size_t encrypted_premaster_len,
5406 const uint8_t *premaster,
5407 size_t premaster_len)
5408 {
5409 if (encrypted_premaster_len < 8) {
5410 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR,
5411 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
5412 return 0;
5413 }
5414
5415 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
5416 return nss_keylog_int("RSA",
5417 ssl,
5418 encrypted_premaster,
5419 8,
5420 premaster,
5421 premaster_len);
5422 }
5423
ssl_log_secret(SSL * ssl,const char * label,const uint8_t * secret,size_t secret_len)5424 int ssl_log_secret(SSL *ssl,
5425 const char *label,
5426 const uint8_t *secret,
5427 size_t secret_len)
5428 {
5429 return nss_keylog_int(label,
5430 ssl,
5431 ssl->s3->client_random,
5432 SSL3_RANDOM_SIZE,
5433 secret,
5434 secret_len);
5435 }
5436
5437 #define SSLV2_CIPHER_LEN 3
5438
ssl_cache_cipherlist(SSL * s,PACKET * cipher_suites,int sslv2format)5439 int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
5440 {
5441 int n;
5442
5443 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5444
5445 if (PACKET_remaining(cipher_suites) == 0) {
5446 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SSL_CACHE_CIPHERLIST,
5447 SSL_R_NO_CIPHERS_SPECIFIED);
5448 return 0;
5449 }
5450
5451 if (PACKET_remaining(cipher_suites) % n != 0) {
5452 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5453 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5454 return 0;
5455 }
5456
5457 OPENSSL_free(s->s3->tmp.ciphers_raw);
5458 s->s3->tmp.ciphers_raw = NULL;
5459 s->s3->tmp.ciphers_rawlen = 0;
5460
5461 if (sslv2format) {
5462 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5463 PACKET sslv2ciphers = *cipher_suites;
5464 unsigned int leadbyte;
5465 unsigned char *raw;
5466
5467 /*
5468 * We store the raw ciphers list in SSLv3+ format so we need to do some
5469 * preprocessing to convert the list first. If there are any SSLv2 only
5470 * ciphersuites with a non-zero leading byte then we are going to
5471 * slightly over allocate because we won't store those. But that isn't a
5472 * problem.
5473 */
5474 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
5475 s->s3->tmp.ciphers_raw = raw;
5476 if (raw == NULL) {
5477 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5478 ERR_R_MALLOC_FAILURE);
5479 return 0;
5480 }
5481 for (s->s3->tmp.ciphers_rawlen = 0;
5482 PACKET_remaining(&sslv2ciphers) > 0;
5483 raw += TLS_CIPHER_LEN) {
5484 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5485 || (leadbyte == 0
5486 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5487 TLS_CIPHER_LEN))
5488 || (leadbyte != 0
5489 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
5490 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5491 SSL_R_BAD_PACKET);
5492 OPENSSL_free(s->s3->tmp.ciphers_raw);
5493 s->s3->tmp.ciphers_raw = NULL;
5494 s->s3->tmp.ciphers_rawlen = 0;
5495 return 0;
5496 }
5497 if (leadbyte == 0)
5498 s->s3->tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5499 }
5500 } else if (!PACKET_memdup(cipher_suites, &s->s3->tmp.ciphers_raw,
5501 &s->s3->tmp.ciphers_rawlen)) {
5502 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5503 ERR_R_INTERNAL_ERROR);
5504 return 0;
5505 }
5506 return 1;
5507 }
5508
SSL_bytes_to_cipher_list(SSL * s,const unsigned char * bytes,size_t len,int isv2format,STACK_OF (SSL_CIPHER)** sk,STACK_OF (SSL_CIPHER)** scsvs)5509 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5510 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5511 STACK_OF(SSL_CIPHER) **scsvs)
5512 {
5513 PACKET pkt;
5514
5515 if (!PACKET_buf_init(&pkt, bytes, len))
5516 return 0;
5517 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
5518 }
5519
bytes_to_cipher_list(SSL * s,PACKET * cipher_suites,STACK_OF (SSL_CIPHER)** skp,STACK_OF (SSL_CIPHER)** scsvs_out,int sslv2format,int fatal)5520 int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5521 STACK_OF(SSL_CIPHER) **skp,
5522 STACK_OF(SSL_CIPHER) **scsvs_out,
5523 int sslv2format, int fatal)
5524 {
5525 const SSL_CIPHER *c;
5526 STACK_OF(SSL_CIPHER) *sk = NULL;
5527 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5528 int n;
5529 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5530 unsigned char cipher[SSLV2_CIPHER_LEN];
5531
5532 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5533
5534 if (PACKET_remaining(cipher_suites) == 0) {
5535 if (fatal)
5536 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_BYTES_TO_CIPHER_LIST,
5537 SSL_R_NO_CIPHERS_SPECIFIED);
5538 else
5539 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
5540 return 0;
5541 }
5542
5543 if (PACKET_remaining(cipher_suites) % n != 0) {
5544 if (fatal)
5545 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5546 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5547 else
5548 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5549 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5550 return 0;
5551 }
5552
5553 sk = sk_SSL_CIPHER_new_null();
5554 scsvs = sk_SSL_CIPHER_new_null();
5555 if (sk == NULL || scsvs == NULL) {
5556 if (fatal)
5557 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5558 ERR_R_MALLOC_FAILURE);
5559 else
5560 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5561 goto err;
5562 }
5563
5564 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5565 /*
5566 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5567 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5568 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5569 */
5570 if (sslv2format && cipher[0] != '\0')
5571 continue;
5572
5573 /* For SSLv2-compat, ignore leading 0-byte. */
5574 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5575 if (c != NULL) {
5576 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5577 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5578 if (fatal)
5579 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
5580 SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5581 else
5582 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5583 goto err;
5584 }
5585 }
5586 }
5587 if (PACKET_remaining(cipher_suites) > 0) {
5588 if (fatal)
5589 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5590 SSL_R_BAD_LENGTH);
5591 else
5592 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
5593 goto err;
5594 }
5595
5596 if (skp != NULL)
5597 *skp = sk;
5598 else
5599 sk_SSL_CIPHER_free(sk);
5600 if (scsvs_out != NULL)
5601 *scsvs_out = scsvs;
5602 else
5603 sk_SSL_CIPHER_free(scsvs);
5604 return 1;
5605 err:
5606 sk_SSL_CIPHER_free(sk);
5607 sk_SSL_CIPHER_free(scsvs);
5608 return 0;
5609 }
5610
SSL_CTX_set_max_early_data(SSL_CTX * ctx,uint32_t max_early_data)5611 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5612 {
5613 ctx->max_early_data = max_early_data;
5614
5615 return 1;
5616 }
5617
SSL_CTX_get_max_early_data(const SSL_CTX * ctx)5618 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5619 {
5620 return ctx->max_early_data;
5621 }
5622
SSL_set_max_early_data(SSL * s,uint32_t max_early_data)5623 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5624 {
5625 s->max_early_data = max_early_data;
5626
5627 return 1;
5628 }
5629
SSL_get_max_early_data(const SSL * s)5630 uint32_t SSL_get_max_early_data(const SSL *s)
5631 {
5632 return s->max_early_data;
5633 }
5634
SSL_CTX_set_recv_max_early_data(SSL_CTX * ctx,uint32_t recv_max_early_data)5635 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
5636 {
5637 ctx->recv_max_early_data = recv_max_early_data;
5638
5639 return 1;
5640 }
5641
SSL_CTX_get_recv_max_early_data(const SSL_CTX * ctx)5642 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
5643 {
5644 return ctx->recv_max_early_data;
5645 }
5646
SSL_set_recv_max_early_data(SSL * s,uint32_t recv_max_early_data)5647 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
5648 {
5649 s->recv_max_early_data = recv_max_early_data;
5650
5651 return 1;
5652 }
5653
SSL_get_recv_max_early_data(const SSL * s)5654 uint32_t SSL_get_recv_max_early_data(const SSL *s)
5655 {
5656 return s->recv_max_early_data;
5657 }
5658
ssl_get_max_send_fragment(const SSL * ssl)5659 __owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5660 {
5661 /* Return any active Max Fragment Len extension */
5662 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5663 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5664
5665 /* return current SSL connection setting */
5666 return ssl->max_send_fragment;
5667 }
5668
ssl_get_split_send_fragment(const SSL * ssl)5669 __owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5670 {
5671 /* Return a value regarding an active Max Fragment Len extension */
5672 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5673 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5674 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5675
5676 /* else limit |split_send_fragment| to current |max_send_fragment| */
5677 if (ssl->split_send_fragment > ssl->max_send_fragment)
5678 return ssl->max_send_fragment;
5679
5680 /* return current SSL connection setting */
5681 return ssl->split_send_fragment;
5682 }
5683
SSL_stateless(SSL * s)5684 int SSL_stateless(SSL *s)
5685 {
5686 int ret;
5687
5688 /* Ensure there is no state left over from a previous invocation */
5689 if (!SSL_clear(s))
5690 return 0;
5691
5692 ERR_clear_error();
5693
5694 s->s3->flags |= TLS1_FLAGS_STATELESS;
5695 ret = SSL_accept(s);
5696 s->s3->flags &= ~TLS1_FLAGS_STATELESS;
5697
5698 if (ret > 0 && s->ext.cookieok)
5699 return 1;
5700
5701 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5702 return 0;
5703
5704 return -1;
5705 }
5706
SSL_CTX_set_post_handshake_auth(SSL_CTX * ctx,int val)5707 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
5708 {
5709 ctx->pha_enabled = val;
5710 }
5711
SSL_set_post_handshake_auth(SSL * ssl,int val)5712 void SSL_set_post_handshake_auth(SSL *ssl, int val)
5713 {
5714 ssl->pha_enabled = val;
5715 }
5716
SSL_verify_client_post_handshake(SSL * ssl)5717 int SSL_verify_client_post_handshake(SSL *ssl)
5718 {
5719 if (!SSL_IS_TLS13(ssl)) {
5720 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_WRONG_SSL_VERSION);
5721 return 0;
5722 }
5723 if (!ssl->server) {
5724 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_NOT_SERVER);
5725 return 0;
5726 }
5727
5728 if (!SSL_is_init_finished(ssl)) {
5729 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_STILL_IN_INIT);
5730 return 0;
5731 }
5732
5733 switch (ssl->post_handshake_auth) {
5734 case SSL_PHA_NONE:
5735 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_EXTENSION_NOT_RECEIVED);
5736 return 0;
5737 default:
5738 case SSL_PHA_EXT_SENT:
5739 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, ERR_R_INTERNAL_ERROR);
5740 return 0;
5741 case SSL_PHA_EXT_RECEIVED:
5742 break;
5743 case SSL_PHA_REQUEST_PENDING:
5744 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_PENDING);
5745 return 0;
5746 case SSL_PHA_REQUESTED:
5747 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_SENT);
5748 return 0;
5749 }
5750
5751 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5752
5753 /* checks verify_mode and algorithm_auth */
5754 if (!send_certificate_request(ssl)) {
5755 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
5756 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_INVALID_CONFIG);
5757 return 0;
5758 }
5759
5760 ossl_statem_set_in_init(ssl, 1);
5761 return 1;
5762 }
5763
SSL_CTX_set_session_ticket_cb(SSL_CTX * ctx,SSL_CTX_generate_session_ticket_fn gen_cb,SSL_CTX_decrypt_session_ticket_fn dec_cb,void * arg)5764 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5765 SSL_CTX_generate_session_ticket_fn gen_cb,
5766 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5767 void *arg)
5768 {
5769 ctx->generate_ticket_cb = gen_cb;
5770 ctx->decrypt_ticket_cb = dec_cb;
5771 ctx->ticket_cb_data = arg;
5772 return 1;
5773 }
5774
SSL_CTX_set_allow_early_data_cb(SSL_CTX * ctx,SSL_allow_early_data_cb_fn cb,void * arg)5775 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
5776 SSL_allow_early_data_cb_fn cb,
5777 void *arg)
5778 {
5779 ctx->allow_early_data_cb = cb;
5780 ctx->allow_early_data_cb_data = arg;
5781 }
5782
SSL_set_allow_early_data_cb(SSL * s,SSL_allow_early_data_cb_fn cb,void * arg)5783 void SSL_set_allow_early_data_cb(SSL *s,
5784 SSL_allow_early_data_cb_fn cb,
5785 void *arg)
5786 {
5787 s->allow_early_data_cb = cb;
5788 s->allow_early_data_cb_data = arg;
5789 }
5790