1 /*
2 * Copyright 1995-2022 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 * processed or unprocessed data available or 0 otherwise (as opposed to the
1536 * number of bytes available). Unlike SSL_pending() this will take into
1537 * account read_ahead data. A 1 return simply indicates that we have data.
1538 * That data may not result in any application data, or we may fail to parse
1539 * the records for some reason.
1540 */
1541
1542 /* Check buffered app data if any first */
1543 if (SSL_IS_DTLS(s)) {
1544 DTLS1_RECORD_DATA *rdata;
1545 pitem *item, *iter;
1546
1547 iter = pqueue_iterator(s->rlayer.d->buffered_app_data.q);
1548 while ((item = pqueue_next(&iter)) != NULL) {
1549 rdata = item->data;
1550 if (rdata->rrec.length > 0)
1551 return 1;
1552 }
1553 }
1554
1555 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1556 return 1;
1557
1558 return RECORD_LAYER_read_pending(&s->rlayer);
1559 }
1560
SSL_get_peer_certificate(const SSL * s)1561 X509 *SSL_get_peer_certificate(const SSL *s)
1562 {
1563 X509 *r;
1564
1565 if ((s == NULL) || (s->session == NULL))
1566 r = NULL;
1567 else
1568 r = s->session->peer;
1569
1570 if (r == NULL)
1571 return r;
1572
1573 X509_up_ref(r);
1574
1575 return r;
1576 }
1577
STACK_OF(X509)1578 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1579 {
1580 STACK_OF(X509) *r;
1581
1582 if ((s == NULL) || (s->session == NULL))
1583 r = NULL;
1584 else
1585 r = s->session->peer_chain;
1586
1587 /*
1588 * If we are a client, cert_chain includes the peer's own certificate; if
1589 * we are a server, it does not.
1590 */
1591
1592 return r;
1593 }
1594
1595 /*
1596 * Now in theory, since the calling process own 't' it should be safe to
1597 * modify. We need to be able to read f without being hassled
1598 */
SSL_copy_session_id(SSL * t,const SSL * f)1599 int SSL_copy_session_id(SSL *t, const SSL *f)
1600 {
1601 int i;
1602 /* Do we need to to SSL locking? */
1603 if (!SSL_set_session(t, SSL_get_session(f))) {
1604 return 0;
1605 }
1606
1607 /*
1608 * what if we are setup for one protocol version but want to talk another
1609 */
1610 if (t->method != f->method) {
1611 t->method->ssl_free(t);
1612 t->method = f->method;
1613 if (t->method->ssl_new(t) == 0)
1614 return 0;
1615 }
1616
1617 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1618 ssl_cert_free(t->cert);
1619 t->cert = f->cert;
1620 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1621 return 0;
1622 }
1623
1624 return 1;
1625 }
1626
1627 /* Fix this so it checks all the valid key/cert options */
SSL_CTX_check_private_key(const SSL_CTX * ctx)1628 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1629 {
1630 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1631 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1632 return 0;
1633 }
1634 if (ctx->cert->key->privatekey == NULL) {
1635 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1636 return 0;
1637 }
1638 return X509_check_private_key
1639 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1640 }
1641
1642 /* Fix this function so that it takes an optional type parameter */
SSL_check_private_key(const SSL * ssl)1643 int SSL_check_private_key(const SSL *ssl)
1644 {
1645 if (ssl == NULL) {
1646 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1647 return 0;
1648 }
1649 if (ssl->cert->key->x509 == NULL) {
1650 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1651 return 0;
1652 }
1653 if (ssl->cert->key->privatekey == NULL) {
1654 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1655 return 0;
1656 }
1657 return X509_check_private_key(ssl->cert->key->x509,
1658 ssl->cert->key->privatekey);
1659 }
1660
SSL_waiting_for_async(SSL * s)1661 int SSL_waiting_for_async(SSL *s)
1662 {
1663 if (s->job)
1664 return 1;
1665
1666 return 0;
1667 }
1668
SSL_get_all_async_fds(SSL * s,OSSL_ASYNC_FD * fds,size_t * numfds)1669 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1670 {
1671 ASYNC_WAIT_CTX *ctx = s->waitctx;
1672
1673 if (ctx == NULL)
1674 return 0;
1675 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1676 }
1677
SSL_get_changed_async_fds(SSL * s,OSSL_ASYNC_FD * addfd,size_t * numaddfds,OSSL_ASYNC_FD * delfd,size_t * numdelfds)1678 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1679 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1680 {
1681 ASYNC_WAIT_CTX *ctx = s->waitctx;
1682
1683 if (ctx == NULL)
1684 return 0;
1685 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1686 numdelfds);
1687 }
1688
SSL_accept(SSL * s)1689 int SSL_accept(SSL *s)
1690 {
1691 if (s->handshake_func == NULL) {
1692 /* Not properly initialized yet */
1693 SSL_set_accept_state(s);
1694 }
1695
1696 return SSL_do_handshake(s);
1697 }
1698
SSL_connect(SSL * s)1699 int SSL_connect(SSL *s)
1700 {
1701 if (s->handshake_func == NULL) {
1702 /* Not properly initialized yet */
1703 SSL_set_connect_state(s);
1704 }
1705
1706 return SSL_do_handshake(s);
1707 }
1708
SSL_get_default_timeout(const SSL * s)1709 long SSL_get_default_timeout(const SSL *s)
1710 {
1711 return s->method->get_timeout();
1712 }
1713
ssl_start_async_job(SSL * s,struct ssl_async_args * args,int (* func)(void *))1714 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1715 int (*func) (void *))
1716 {
1717 int ret;
1718 if (s->waitctx == NULL) {
1719 s->waitctx = ASYNC_WAIT_CTX_new();
1720 if (s->waitctx == NULL)
1721 return -1;
1722 }
1723
1724 s->rwstate = SSL_NOTHING;
1725 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1726 sizeof(struct ssl_async_args))) {
1727 case ASYNC_ERR:
1728 s->rwstate = SSL_NOTHING;
1729 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1730 return -1;
1731 case ASYNC_PAUSE:
1732 s->rwstate = SSL_ASYNC_PAUSED;
1733 return -1;
1734 case ASYNC_NO_JOBS:
1735 s->rwstate = SSL_ASYNC_NO_JOBS;
1736 return -1;
1737 case ASYNC_FINISH:
1738 s->job = NULL;
1739 return ret;
1740 default:
1741 s->rwstate = SSL_NOTHING;
1742 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1743 /* Shouldn't happen */
1744 return -1;
1745 }
1746 }
1747
ssl_io_intern(void * vargs)1748 static int ssl_io_intern(void *vargs)
1749 {
1750 struct ssl_async_args *args;
1751 SSL *s;
1752 void *buf;
1753 size_t num;
1754
1755 args = (struct ssl_async_args *)vargs;
1756 s = args->s;
1757 buf = args->buf;
1758 num = args->num;
1759 switch (args->type) {
1760 case READFUNC:
1761 return args->f.func_read(s, buf, num, &s->asyncrw);
1762 case WRITEFUNC:
1763 return args->f.func_write(s, buf, num, &s->asyncrw);
1764 case OTHERFUNC:
1765 return args->f.func_other(s);
1766 }
1767 return -1;
1768 }
1769
ssl_read_internal(SSL * s,void * buf,size_t num,size_t * readbytes)1770 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1771 {
1772 if (s->handshake_func == NULL) {
1773 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
1774 return -1;
1775 }
1776
1777 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1778 s->rwstate = SSL_NOTHING;
1779 return 0;
1780 }
1781
1782 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1783 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1784 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1785 return 0;
1786 }
1787 /*
1788 * If we are a client and haven't received the ServerHello etc then we
1789 * better do that
1790 */
1791 ossl_statem_check_finish_init(s, 0);
1792
1793 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1794 struct ssl_async_args args;
1795 int ret;
1796
1797 args.s = s;
1798 args.buf = buf;
1799 args.num = num;
1800 args.type = READFUNC;
1801 args.f.func_read = s->method->ssl_read;
1802
1803 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1804 *readbytes = s->asyncrw;
1805 return ret;
1806 } else {
1807 return s->method->ssl_read(s, buf, num, readbytes);
1808 }
1809 }
1810
SSL_read(SSL * s,void * buf,int num)1811 int SSL_read(SSL *s, void *buf, int num)
1812 {
1813 int ret;
1814 size_t readbytes;
1815
1816 if (num < 0) {
1817 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1818 return -1;
1819 }
1820
1821 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1822
1823 /*
1824 * The cast is safe here because ret should be <= INT_MAX because num is
1825 * <= INT_MAX
1826 */
1827 if (ret > 0)
1828 ret = (int)readbytes;
1829
1830 return ret;
1831 }
1832
SSL_read_ex(SSL * s,void * buf,size_t num,size_t * readbytes)1833 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1834 {
1835 int ret = ssl_read_internal(s, buf, num, readbytes);
1836
1837 if (ret < 0)
1838 ret = 0;
1839 return ret;
1840 }
1841
SSL_read_early_data(SSL * s,void * buf,size_t num,size_t * readbytes)1842 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1843 {
1844 int ret;
1845
1846 if (!s->server) {
1847 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1848 return SSL_READ_EARLY_DATA_ERROR;
1849 }
1850
1851 switch (s->early_data_state) {
1852 case SSL_EARLY_DATA_NONE:
1853 if (!SSL_in_before(s)) {
1854 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1855 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1856 return SSL_READ_EARLY_DATA_ERROR;
1857 }
1858 /* fall through */
1859
1860 case SSL_EARLY_DATA_ACCEPT_RETRY:
1861 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1862 ret = SSL_accept(s);
1863 if (ret <= 0) {
1864 /* NBIO or error */
1865 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1866 return SSL_READ_EARLY_DATA_ERROR;
1867 }
1868 /* fall through */
1869
1870 case SSL_EARLY_DATA_READ_RETRY:
1871 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1872 s->early_data_state = SSL_EARLY_DATA_READING;
1873 ret = SSL_read_ex(s, buf, num, readbytes);
1874 /*
1875 * State machine will update early_data_state to
1876 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1877 * message
1878 */
1879 if (ret > 0 || (ret <= 0 && s->early_data_state
1880 != SSL_EARLY_DATA_FINISHED_READING)) {
1881 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1882 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1883 : SSL_READ_EARLY_DATA_ERROR;
1884 }
1885 } else {
1886 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1887 }
1888 *readbytes = 0;
1889 return SSL_READ_EARLY_DATA_FINISH;
1890
1891 default:
1892 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1893 return SSL_READ_EARLY_DATA_ERROR;
1894 }
1895 }
1896
SSL_get_early_data_status(const SSL * s)1897 int SSL_get_early_data_status(const SSL *s)
1898 {
1899 return s->ext.early_data;
1900 }
1901
ssl_peek_internal(SSL * s,void * buf,size_t num,size_t * readbytes)1902 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1903 {
1904 if (s->handshake_func == NULL) {
1905 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
1906 return -1;
1907 }
1908
1909 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1910 return 0;
1911 }
1912 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1913 struct ssl_async_args args;
1914 int ret;
1915
1916 args.s = s;
1917 args.buf = buf;
1918 args.num = num;
1919 args.type = READFUNC;
1920 args.f.func_read = s->method->ssl_peek;
1921
1922 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1923 *readbytes = s->asyncrw;
1924 return ret;
1925 } else {
1926 return s->method->ssl_peek(s, buf, num, readbytes);
1927 }
1928 }
1929
SSL_peek(SSL * s,void * buf,int num)1930 int SSL_peek(SSL *s, void *buf, int num)
1931 {
1932 int ret;
1933 size_t readbytes;
1934
1935 if (num < 0) {
1936 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1937 return -1;
1938 }
1939
1940 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
1941
1942 /*
1943 * The cast is safe here because ret should be <= INT_MAX because num is
1944 * <= INT_MAX
1945 */
1946 if (ret > 0)
1947 ret = (int)readbytes;
1948
1949 return ret;
1950 }
1951
1952
SSL_peek_ex(SSL * s,void * buf,size_t num,size_t * readbytes)1953 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1954 {
1955 int ret = ssl_peek_internal(s, buf, num, readbytes);
1956
1957 if (ret < 0)
1958 ret = 0;
1959 return ret;
1960 }
1961
ssl_write_internal(SSL * s,const void * buf,size_t num,size_t * written)1962 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
1963 {
1964 if (s->handshake_func == NULL) {
1965 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
1966 return -1;
1967 }
1968
1969 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1970 s->rwstate = SSL_NOTHING;
1971 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1972 return -1;
1973 }
1974
1975 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1976 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1977 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
1978 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1979 return 0;
1980 }
1981 /* If we are a client and haven't sent the Finished we better do that */
1982 ossl_statem_check_finish_init(s, 1);
1983
1984 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1985 int ret;
1986 struct ssl_async_args args;
1987
1988 args.s = s;
1989 args.buf = (void *)buf;
1990 args.num = num;
1991 args.type = WRITEFUNC;
1992 args.f.func_write = s->method->ssl_write;
1993
1994 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1995 *written = s->asyncrw;
1996 return ret;
1997 } else {
1998 return s->method->ssl_write(s, buf, num, written);
1999 }
2000 }
2001
SSL_sendfile(SSL * s,int fd,off_t offset,size_t size,int flags)2002 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2003 {
2004 ossl_ssize_t ret;
2005
2006 if (s->handshake_func == NULL) {
2007 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2008 return -1;
2009 }
2010
2011 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2012 s->rwstate = SSL_NOTHING;
2013 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_PROTOCOL_IS_SHUTDOWN);
2014 return -1;
2015 }
2016
2017 if (!BIO_get_ktls_send(s->wbio)) {
2018 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2019 return -1;
2020 }
2021
2022 /* If we have an alert to send, lets send it */
2023 if (s->s3->alert_dispatch) {
2024 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2025 if (ret <= 0) {
2026 /* SSLfatal() already called if appropriate */
2027 return ret;
2028 }
2029 /* if it went, fall through and send more stuff */
2030 }
2031
2032 s->rwstate = SSL_WRITING;
2033 if (BIO_flush(s->wbio) <= 0) {
2034 if (!BIO_should_retry(s->wbio)) {
2035 s->rwstate = SSL_NOTHING;
2036 } else {
2037 #ifdef EAGAIN
2038 set_sys_error(EAGAIN);
2039 #endif
2040 }
2041 return -1;
2042 }
2043
2044 #ifdef OPENSSL_NO_KTLS
2045 SYSerr(SSL_F_SSL_SENDFILE, ERR_R_INTERNAL_ERROR);
2046 ERR_add_error_data(1, "calling sendfile()");
2047 return -1;
2048 #else
2049 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2050 if (ret < 0) {
2051 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2052 if ((get_last_sys_error() == EAGAIN) ||
2053 (get_last_sys_error() == EINTR) ||
2054 (get_last_sys_error() == EBUSY))
2055 BIO_set_retry_write(s->wbio);
2056 else
2057 #endif
2058 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2059 return ret;
2060 }
2061 s->rwstate = SSL_NOTHING;
2062 return ret;
2063 #endif
2064 }
2065
SSL_write(SSL * s,const void * buf,int num)2066 int SSL_write(SSL *s, const void *buf, int num)
2067 {
2068 int ret;
2069 size_t written;
2070
2071 if (num < 0) {
2072 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
2073 return -1;
2074 }
2075
2076 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2077
2078 /*
2079 * The cast is safe here because ret should be <= INT_MAX because num is
2080 * <= INT_MAX
2081 */
2082 if (ret > 0)
2083 ret = (int)written;
2084
2085 return ret;
2086 }
2087
SSL_write_ex(SSL * s,const void * buf,size_t num,size_t * written)2088 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2089 {
2090 int ret = ssl_write_internal(s, buf, num, written);
2091
2092 if (ret < 0)
2093 ret = 0;
2094 return ret;
2095 }
2096
SSL_write_early_data(SSL * s,const void * buf,size_t num,size_t * written)2097 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2098 {
2099 int ret, early_data_state;
2100 size_t writtmp;
2101 uint32_t partialwrite;
2102
2103 switch (s->early_data_state) {
2104 case SSL_EARLY_DATA_NONE:
2105 if (s->server
2106 || !SSL_in_before(s)
2107 || ((s->session == NULL || s->session->ext.max_early_data == 0)
2108 && (s->psk_use_session_cb == NULL))) {
2109 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
2110 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2111 return 0;
2112 }
2113 /* fall through */
2114
2115 case SSL_EARLY_DATA_CONNECT_RETRY:
2116 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
2117 ret = SSL_connect(s);
2118 if (ret <= 0) {
2119 /* NBIO or error */
2120 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2121 return 0;
2122 }
2123 /* fall through */
2124
2125 case SSL_EARLY_DATA_WRITE_RETRY:
2126 s->early_data_state = SSL_EARLY_DATA_WRITING;
2127 /*
2128 * We disable partial write for early data because we don't keep track
2129 * of how many bytes we've written between the SSL_write_ex() call and
2130 * the flush if the flush needs to be retried)
2131 */
2132 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2133 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2134 ret = SSL_write_ex(s, buf, num, &writtmp);
2135 s->mode |= partialwrite;
2136 if (!ret) {
2137 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2138 return ret;
2139 }
2140 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2141 /* fall through */
2142
2143 case SSL_EARLY_DATA_WRITE_FLUSH:
2144 /* The buffering BIO is still in place so we need to flush it */
2145 if (statem_flush(s) != 1)
2146 return 0;
2147 *written = num;
2148 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2149 return 1;
2150
2151 case SSL_EARLY_DATA_FINISHED_READING:
2152 case SSL_EARLY_DATA_READ_RETRY:
2153 early_data_state = s->early_data_state;
2154 /* We are a server writing to an unauthenticated client */
2155 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2156 ret = SSL_write_ex(s, buf, num, written);
2157 /* The buffering BIO is still in place */
2158 if (ret)
2159 (void)BIO_flush(s->wbio);
2160 s->early_data_state = early_data_state;
2161 return ret;
2162
2163 default:
2164 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2165 return 0;
2166 }
2167 }
2168
SSL_shutdown(SSL * s)2169 int SSL_shutdown(SSL *s)
2170 {
2171 /*
2172 * Note that this function behaves differently from what one might
2173 * expect. Return values are 0 for no success (yet), 1 for success; but
2174 * calling it once is usually not enough, even if blocking I/O is used
2175 * (see ssl3_shutdown).
2176 */
2177
2178 if (s->handshake_func == NULL) {
2179 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
2180 return -1;
2181 }
2182
2183 if (!SSL_in_init(s)) {
2184 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2185 struct ssl_async_args args;
2186
2187 memset(&args, 0, sizeof(args));
2188 args.s = s;
2189 args.type = OTHERFUNC;
2190 args.f.func_other = s->method->ssl_shutdown;
2191
2192 return ssl_start_async_job(s, &args, ssl_io_intern);
2193 } else {
2194 return s->method->ssl_shutdown(s);
2195 }
2196 } else {
2197 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2198 return -1;
2199 }
2200 }
2201
SSL_key_update(SSL * s,int updatetype)2202 int SSL_key_update(SSL *s, int updatetype)
2203 {
2204 /*
2205 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
2206 * negotiated, and that it is appropriate to call SSL_key_update() instead
2207 * of SSL_renegotiate().
2208 */
2209 if (!SSL_IS_TLS13(s)) {
2210 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2211 return 0;
2212 }
2213
2214 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2215 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2216 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2217 return 0;
2218 }
2219
2220 if (!SSL_is_init_finished(s)) {
2221 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2222 return 0;
2223 }
2224
2225 if (RECORD_LAYER_write_pending(&s->rlayer)) {
2226 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_BAD_WRITE_RETRY);
2227 return 0;
2228 }
2229
2230 ossl_statem_set_in_init(s, 1);
2231 s->key_update = updatetype;
2232 return 1;
2233 }
2234
SSL_get_key_update_type(const SSL * s)2235 int SSL_get_key_update_type(const SSL *s)
2236 {
2237 return s->key_update;
2238 }
2239
SSL_renegotiate(SSL * s)2240 int SSL_renegotiate(SSL *s)
2241 {
2242 if (SSL_IS_TLS13(s)) {
2243 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2244 return 0;
2245 }
2246
2247 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2248 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2249 return 0;
2250 }
2251
2252 s->renegotiate = 1;
2253 s->new_session = 1;
2254
2255 return s->method->ssl_renegotiate(s);
2256 }
2257
SSL_renegotiate_abbreviated(SSL * s)2258 int SSL_renegotiate_abbreviated(SSL *s)
2259 {
2260 if (SSL_IS_TLS13(s)) {
2261 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2262 return 0;
2263 }
2264
2265 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2266 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2267 return 0;
2268 }
2269
2270 s->renegotiate = 1;
2271 s->new_session = 0;
2272
2273 return s->method->ssl_renegotiate(s);
2274 }
2275
SSL_renegotiate_pending(const SSL * s)2276 int SSL_renegotiate_pending(const SSL *s)
2277 {
2278 /*
2279 * becomes true when negotiation is requested; false again once a
2280 * handshake has finished
2281 */
2282 return (s->renegotiate != 0);
2283 }
2284
SSL_ctrl(SSL * s,int cmd,long larg,void * parg)2285 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2286 {
2287 long l;
2288
2289 switch (cmd) {
2290 case SSL_CTRL_GET_READ_AHEAD:
2291 return RECORD_LAYER_get_read_ahead(&s->rlayer);
2292 case SSL_CTRL_SET_READ_AHEAD:
2293 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2294 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2295 return l;
2296
2297 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2298 s->msg_callback_arg = parg;
2299 return 1;
2300
2301 case SSL_CTRL_MODE:
2302 return (s->mode |= larg);
2303 case SSL_CTRL_CLEAR_MODE:
2304 return (s->mode &= ~larg);
2305 case SSL_CTRL_GET_MAX_CERT_LIST:
2306 return (long)s->max_cert_list;
2307 case SSL_CTRL_SET_MAX_CERT_LIST:
2308 if (larg < 0)
2309 return 0;
2310 l = (long)s->max_cert_list;
2311 s->max_cert_list = (size_t)larg;
2312 return l;
2313 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2314 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2315 return 0;
2316 #ifndef OPENSSL_NO_KTLS
2317 if (s->wbio != NULL && BIO_get_ktls_send(s->wbio))
2318 return 0;
2319 #endif /* OPENSSL_NO_KTLS */
2320 s->max_send_fragment = larg;
2321 if (s->max_send_fragment < s->split_send_fragment)
2322 s->split_send_fragment = s->max_send_fragment;
2323 return 1;
2324 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2325 if ((size_t)larg > s->max_send_fragment || larg == 0)
2326 return 0;
2327 s->split_send_fragment = larg;
2328 return 1;
2329 case SSL_CTRL_SET_MAX_PIPELINES:
2330 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2331 return 0;
2332 s->max_pipelines = larg;
2333 if (larg > 1)
2334 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2335 return 1;
2336 case SSL_CTRL_GET_RI_SUPPORT:
2337 if (s->s3)
2338 return s->s3->send_connection_binding;
2339 else
2340 return 0;
2341 case SSL_CTRL_CERT_FLAGS:
2342 return (s->cert->cert_flags |= larg);
2343 case SSL_CTRL_CLEAR_CERT_FLAGS:
2344 return (s->cert->cert_flags &= ~larg);
2345
2346 case SSL_CTRL_GET_RAW_CIPHERLIST:
2347 if (parg) {
2348 if (s->s3->tmp.ciphers_raw == NULL)
2349 return 0;
2350 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
2351 return (int)s->s3->tmp.ciphers_rawlen;
2352 } else {
2353 return TLS_CIPHER_LEN;
2354 }
2355 case SSL_CTRL_GET_EXTMS_SUPPORT:
2356 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2357 return -1;
2358 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2359 return 1;
2360 else
2361 return 0;
2362 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2363 return ssl_check_allowed_versions(larg, s->max_proto_version)
2364 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2365 &s->min_proto_version);
2366 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2367 return s->min_proto_version;
2368 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2369 return ssl_check_allowed_versions(s->min_proto_version, larg)
2370 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2371 &s->max_proto_version);
2372 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2373 return s->max_proto_version;
2374 default:
2375 return s->method->ssl_ctrl(s, cmd, larg, parg);
2376 }
2377 }
2378
SSL_callback_ctrl(SSL * s,int cmd,void (* fp)(void))2379 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2380 {
2381 switch (cmd) {
2382 case SSL_CTRL_SET_MSG_CALLBACK:
2383 s->msg_callback = (void (*)
2384 (int write_p, int version, int content_type,
2385 const void *buf, size_t len, SSL *ssl,
2386 void *arg))(fp);
2387 return 1;
2388
2389 default:
2390 return s->method->ssl_callback_ctrl(s, cmd, fp);
2391 }
2392 }
2393
LHASH_OF(SSL_SESSION)2394 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2395 {
2396 return ctx->sessions;
2397 }
2398
SSL_CTX_ctrl(SSL_CTX * ctx,int cmd,long larg,void * parg)2399 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2400 {
2401 long l;
2402 /* For some cases with ctx == NULL perform syntax checks */
2403 if (ctx == NULL) {
2404 switch (cmd) {
2405 #ifndef OPENSSL_NO_EC
2406 case SSL_CTRL_SET_GROUPS_LIST:
2407 return tls1_set_groups_list(NULL, NULL, parg);
2408 #endif
2409 case SSL_CTRL_SET_SIGALGS_LIST:
2410 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2411 return tls1_set_sigalgs_list(NULL, parg, 0);
2412 default:
2413 return 0;
2414 }
2415 }
2416
2417 switch (cmd) {
2418 case SSL_CTRL_GET_READ_AHEAD:
2419 return ctx->read_ahead;
2420 case SSL_CTRL_SET_READ_AHEAD:
2421 l = ctx->read_ahead;
2422 ctx->read_ahead = larg;
2423 return l;
2424
2425 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2426 ctx->msg_callback_arg = parg;
2427 return 1;
2428
2429 case SSL_CTRL_GET_MAX_CERT_LIST:
2430 return (long)ctx->max_cert_list;
2431 case SSL_CTRL_SET_MAX_CERT_LIST:
2432 if (larg < 0)
2433 return 0;
2434 l = (long)ctx->max_cert_list;
2435 ctx->max_cert_list = (size_t)larg;
2436 return l;
2437
2438 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2439 if (larg < 0)
2440 return 0;
2441 l = (long)ctx->session_cache_size;
2442 ctx->session_cache_size = (size_t)larg;
2443 return l;
2444 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2445 return (long)ctx->session_cache_size;
2446 case SSL_CTRL_SET_SESS_CACHE_MODE:
2447 l = ctx->session_cache_mode;
2448 ctx->session_cache_mode = larg;
2449 return l;
2450 case SSL_CTRL_GET_SESS_CACHE_MODE:
2451 return ctx->session_cache_mode;
2452
2453 case SSL_CTRL_SESS_NUMBER:
2454 return lh_SSL_SESSION_num_items(ctx->sessions);
2455 case SSL_CTRL_SESS_CONNECT:
2456 return tsan_load(&ctx->stats.sess_connect);
2457 case SSL_CTRL_SESS_CONNECT_GOOD:
2458 return tsan_load(&ctx->stats.sess_connect_good);
2459 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2460 return tsan_load(&ctx->stats.sess_connect_renegotiate);
2461 case SSL_CTRL_SESS_ACCEPT:
2462 return tsan_load(&ctx->stats.sess_accept);
2463 case SSL_CTRL_SESS_ACCEPT_GOOD:
2464 return tsan_load(&ctx->stats.sess_accept_good);
2465 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2466 return tsan_load(&ctx->stats.sess_accept_renegotiate);
2467 case SSL_CTRL_SESS_HIT:
2468 return tsan_load(&ctx->stats.sess_hit);
2469 case SSL_CTRL_SESS_CB_HIT:
2470 return tsan_load(&ctx->stats.sess_cb_hit);
2471 case SSL_CTRL_SESS_MISSES:
2472 return tsan_load(&ctx->stats.sess_miss);
2473 case SSL_CTRL_SESS_TIMEOUTS:
2474 return tsan_load(&ctx->stats.sess_timeout);
2475 case SSL_CTRL_SESS_CACHE_FULL:
2476 return tsan_load(&ctx->stats.sess_cache_full);
2477 case SSL_CTRL_MODE:
2478 return (ctx->mode |= larg);
2479 case SSL_CTRL_CLEAR_MODE:
2480 return (ctx->mode &= ~larg);
2481 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2482 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2483 return 0;
2484 ctx->max_send_fragment = larg;
2485 if (ctx->max_send_fragment < ctx->split_send_fragment)
2486 ctx->split_send_fragment = ctx->max_send_fragment;
2487 return 1;
2488 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2489 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2490 return 0;
2491 ctx->split_send_fragment = larg;
2492 return 1;
2493 case SSL_CTRL_SET_MAX_PIPELINES:
2494 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2495 return 0;
2496 ctx->max_pipelines = larg;
2497 return 1;
2498 case SSL_CTRL_CERT_FLAGS:
2499 return (ctx->cert->cert_flags |= larg);
2500 case SSL_CTRL_CLEAR_CERT_FLAGS:
2501 return (ctx->cert->cert_flags &= ~larg);
2502 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2503 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2504 && ssl_set_version_bound(ctx->method->version, (int)larg,
2505 &ctx->min_proto_version);
2506 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2507 return ctx->min_proto_version;
2508 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2509 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2510 && ssl_set_version_bound(ctx->method->version, (int)larg,
2511 &ctx->max_proto_version);
2512 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2513 return ctx->max_proto_version;
2514 default:
2515 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2516 }
2517 }
2518
SSL_CTX_callback_ctrl(SSL_CTX * ctx,int cmd,void (* fp)(void))2519 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2520 {
2521 switch (cmd) {
2522 case SSL_CTRL_SET_MSG_CALLBACK:
2523 ctx->msg_callback = (void (*)
2524 (int write_p, int version, int content_type,
2525 const void *buf, size_t len, SSL *ssl,
2526 void *arg))(fp);
2527 return 1;
2528
2529 default:
2530 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2531 }
2532 }
2533
ssl_cipher_id_cmp(const SSL_CIPHER * a,const SSL_CIPHER * b)2534 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2535 {
2536 if (a->id > b->id)
2537 return 1;
2538 if (a->id < b->id)
2539 return -1;
2540 return 0;
2541 }
2542
ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const * ap,const SSL_CIPHER * const * bp)2543 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2544 const SSL_CIPHER *const *bp)
2545 {
2546 if ((*ap)->id > (*bp)->id)
2547 return 1;
2548 if ((*ap)->id < (*bp)->id)
2549 return -1;
2550 return 0;
2551 }
2552
2553 /** return a STACK of the ciphers available for the SSL and in order of
2554 * preference */
STACK_OF(SSL_CIPHER)2555 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2556 {
2557 if (s != NULL) {
2558 if (s->cipher_list != NULL) {
2559 return s->cipher_list;
2560 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2561 return s->ctx->cipher_list;
2562 }
2563 }
2564 return NULL;
2565 }
2566
STACK_OF(SSL_CIPHER)2567 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2568 {
2569 if ((s == NULL) || !s->server)
2570 return NULL;
2571 return s->peer_ciphers;
2572 }
2573
STACK_OF(SSL_CIPHER)2574 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2575 {
2576 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2577 int i;
2578
2579 ciphers = SSL_get_ciphers(s);
2580 if (!ciphers)
2581 return NULL;
2582 if (!ssl_set_client_disabled(s))
2583 return NULL;
2584 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2585 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2586 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2587 if (!sk)
2588 sk = sk_SSL_CIPHER_new_null();
2589 if (!sk)
2590 return NULL;
2591 if (!sk_SSL_CIPHER_push(sk, c)) {
2592 sk_SSL_CIPHER_free(sk);
2593 return NULL;
2594 }
2595 }
2596 }
2597 return sk;
2598 }
2599
2600 /** return a STACK of the ciphers available for the SSL and in order of
2601 * algorithm id */
STACK_OF(SSL_CIPHER)2602 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2603 {
2604 if (s != NULL) {
2605 if (s->cipher_list_by_id != NULL) {
2606 return s->cipher_list_by_id;
2607 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2608 return s->ctx->cipher_list_by_id;
2609 }
2610 }
2611 return NULL;
2612 }
2613
2614 /** The old interface to get the same thing as SSL_get_ciphers() */
SSL_get_cipher_list(const SSL * s,int n)2615 const char *SSL_get_cipher_list(const SSL *s, int n)
2616 {
2617 const SSL_CIPHER *c;
2618 STACK_OF(SSL_CIPHER) *sk;
2619
2620 if (s == NULL)
2621 return NULL;
2622 sk = SSL_get_ciphers(s);
2623 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2624 return NULL;
2625 c = sk_SSL_CIPHER_value(sk, n);
2626 if (c == NULL)
2627 return NULL;
2628 return c->name;
2629 }
2630
2631 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2632 * preference */
STACK_OF(SSL_CIPHER)2633 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2634 {
2635 if (ctx != NULL)
2636 return ctx->cipher_list;
2637 return NULL;
2638 }
2639
2640 /*
2641 * Distinguish between ciphers controlled by set_ciphersuite() and
2642 * set_cipher_list() when counting.
2643 */
cipher_list_tls12_num(STACK_OF (SSL_CIPHER)* sk)2644 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
2645 {
2646 int i, num = 0;
2647 const SSL_CIPHER *c;
2648
2649 if (sk == NULL)
2650 return 0;
2651 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
2652 c = sk_SSL_CIPHER_value(sk, i);
2653 if (c->min_tls >= TLS1_3_VERSION)
2654 continue;
2655 num++;
2656 }
2657 return num;
2658 }
2659
2660 /** specify the ciphers to be used by default by the SSL_CTX */
SSL_CTX_set_cipher_list(SSL_CTX * ctx,const char * str)2661 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2662 {
2663 STACK_OF(SSL_CIPHER) *sk;
2664
2665 sk = ssl_create_cipher_list(ctx->method, ctx->tls13_ciphersuites,
2666 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2667 ctx->cert);
2668 /*
2669 * ssl_create_cipher_list may return an empty stack if it was unable to
2670 * find a cipher matching the given rule string (for example if the rule
2671 * string specifies a cipher which has been disabled). This is not an
2672 * error as far as ssl_create_cipher_list is concerned, and hence
2673 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2674 */
2675 if (sk == NULL)
2676 return 0;
2677 else if (cipher_list_tls12_num(sk) == 0) {
2678 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2679 return 0;
2680 }
2681 return 1;
2682 }
2683
2684 /** specify the ciphers to be used by the SSL */
SSL_set_cipher_list(SSL * s,const char * str)2685 int SSL_set_cipher_list(SSL *s, const char *str)
2686 {
2687 STACK_OF(SSL_CIPHER) *sk;
2688
2689 sk = ssl_create_cipher_list(s->ctx->method, s->tls13_ciphersuites,
2690 &s->cipher_list, &s->cipher_list_by_id, str,
2691 s->cert);
2692 /* see comment in SSL_CTX_set_cipher_list */
2693 if (sk == NULL)
2694 return 0;
2695 else if (cipher_list_tls12_num(sk) == 0) {
2696 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2697 return 0;
2698 }
2699 return 1;
2700 }
2701
SSL_get_shared_ciphers(const SSL * s,char * buf,int size)2702 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
2703 {
2704 char *p;
2705 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
2706 const SSL_CIPHER *c;
2707 int i;
2708
2709 if (!s->server
2710 || s->peer_ciphers == NULL
2711 || size < 2)
2712 return NULL;
2713
2714 p = buf;
2715 clntsk = s->peer_ciphers;
2716 srvrsk = SSL_get_ciphers(s);
2717 if (clntsk == NULL || srvrsk == NULL)
2718 return NULL;
2719
2720 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
2721 return NULL;
2722
2723 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
2724 int n;
2725
2726 c = sk_SSL_CIPHER_value(clntsk, i);
2727 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
2728 continue;
2729
2730 n = strlen(c->name);
2731 if (n + 1 > size) {
2732 if (p != buf)
2733 --p;
2734 *p = '\0';
2735 return buf;
2736 }
2737 strcpy(p, c->name);
2738 p += n;
2739 *(p++) = ':';
2740 size -= n + 1;
2741 }
2742 p[-1] = '\0';
2743 return buf;
2744 }
2745
2746 /**
2747 * Return the requested servername (SNI) value. Note that the behaviour varies
2748 * depending on:
2749 * - whether this is called by the client or the server,
2750 * - if we are before or during/after the handshake,
2751 * - if a resumption or normal handshake is being attempted/has occurred
2752 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
2753 *
2754 * Note that only the host_name type is defined (RFC 3546).
2755 */
SSL_get_servername(const SSL * s,const int type)2756 const char *SSL_get_servername(const SSL *s, const int type)
2757 {
2758 /*
2759 * If we don't know if we are the client or the server yet then we assume
2760 * client.
2761 */
2762 int server = s->handshake_func == NULL ? 0 : s->server;
2763 if (type != TLSEXT_NAMETYPE_host_name)
2764 return NULL;
2765
2766 if (server) {
2767 /**
2768 * Server side
2769 * In TLSv1.3 on the server SNI is not associated with the session
2770 * but in TLSv1.2 or below it is.
2771 *
2772 * Before the handshake:
2773 * - return NULL
2774 *
2775 * During/after the handshake (TLSv1.2 or below resumption occurred):
2776 * - If a servername was accepted by the server in the original
2777 * handshake then it will return that servername, or NULL otherwise.
2778 *
2779 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2780 * - The function will return the servername requested by the client in
2781 * this handshake or NULL if none was requested.
2782 */
2783 if (s->hit && !SSL_IS_TLS13(s))
2784 return s->session->ext.hostname;
2785 } else {
2786 /**
2787 * Client side
2788 *
2789 * Before the handshake:
2790 * - If a servername has been set via a call to
2791 * SSL_set_tlsext_host_name() then it will return that servername
2792 * - If one has not been set, but a TLSv1.2 resumption is being
2793 * attempted and the session from the original handshake had a
2794 * servername accepted by the server then it will return that
2795 * servername
2796 * - Otherwise it returns NULL
2797 *
2798 * During/after the handshake (TLSv1.2 or below resumption occurred):
2799 * - If the session from the original handshake had a servername accepted
2800 * by the server then it will return that servername.
2801 * - Otherwise it returns the servername set via
2802 * SSL_set_tlsext_host_name() (or NULL if it was not called).
2803 *
2804 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2805 * - It will return the servername set via SSL_set_tlsext_host_name()
2806 * (or NULL if it was not called).
2807 */
2808 if (SSL_in_before(s)) {
2809 if (s->ext.hostname == NULL
2810 && s->session != NULL
2811 && s->session->ssl_version != TLS1_3_VERSION)
2812 return s->session->ext.hostname;
2813 } else {
2814 if (!SSL_IS_TLS13(s) && s->hit && s->session->ext.hostname != NULL)
2815 return s->session->ext.hostname;
2816 }
2817 }
2818
2819 return s->ext.hostname;
2820 }
2821
SSL_get_servername_type(const SSL * s)2822 int SSL_get_servername_type(const SSL *s)
2823 {
2824 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
2825 return TLSEXT_NAMETYPE_host_name;
2826 return -1;
2827 }
2828
2829 /*
2830 * SSL_select_next_proto implements the standard protocol selection. It is
2831 * expected that this function is called from the callback set by
2832 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2833 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2834 * not included in the length. A byte string of length 0 is invalid. No byte
2835 * string may be truncated. The current, but experimental algorithm for
2836 * selecting the protocol is: 1) If the server doesn't support NPN then this
2837 * is indicated to the callback. In this case, the client application has to
2838 * abort the connection or have a default application level protocol. 2) If
2839 * the server supports NPN, but advertises an empty list then the client
2840 * selects the first protocol in its list, but indicates via the API that this
2841 * fallback case was enacted. 3) Otherwise, the client finds the first
2842 * protocol in the server's list that it supports and selects this protocol.
2843 * This is because it's assumed that the server has better information about
2844 * which protocol a client should use. 4) If the client doesn't support any
2845 * of the server's advertised protocols, then this is treated the same as
2846 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2847 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2848 */
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)2849 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2850 const unsigned char *server,
2851 unsigned int server_len,
2852 const unsigned char *client, unsigned int client_len)
2853 {
2854 unsigned int i, j;
2855 const unsigned char *result;
2856 int status = OPENSSL_NPN_UNSUPPORTED;
2857
2858 /*
2859 * For each protocol in server preference order, see if we support it.
2860 */
2861 for (i = 0; i < server_len;) {
2862 for (j = 0; j < client_len;) {
2863 if (server[i] == client[j] &&
2864 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2865 /* We found a match */
2866 result = &server[i];
2867 status = OPENSSL_NPN_NEGOTIATED;
2868 goto found;
2869 }
2870 j += client[j];
2871 j++;
2872 }
2873 i += server[i];
2874 i++;
2875 }
2876
2877 /* There's no overlap between our protocols and the server's list. */
2878 result = client;
2879 status = OPENSSL_NPN_NO_OVERLAP;
2880
2881 found:
2882 *out = (unsigned char *)result + 1;
2883 *outlen = result[0];
2884 return status;
2885 }
2886
2887 #ifndef OPENSSL_NO_NEXTPROTONEG
2888 /*
2889 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2890 * client's requested protocol for this connection and returns 0. If the
2891 * client didn't request any protocol, then *data is set to NULL. Note that
2892 * the client can request any protocol it chooses. The value returned from
2893 * this function need not be a member of the list of supported protocols
2894 * provided by the callback.
2895 */
SSL_get0_next_proto_negotiated(const SSL * s,const unsigned char ** data,unsigned * len)2896 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2897 unsigned *len)
2898 {
2899 *data = s->ext.npn;
2900 if (!*data) {
2901 *len = 0;
2902 } else {
2903 *len = (unsigned int)s->ext.npn_len;
2904 }
2905 }
2906
2907 /*
2908 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2909 * a TLS server needs a list of supported protocols for Next Protocol
2910 * Negotiation. The returned list must be in wire format. The list is
2911 * returned by setting |out| to point to it and |outlen| to its length. This
2912 * memory will not be modified, but one should assume that the SSL* keeps a
2913 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2914 * wishes to advertise. Otherwise, no such extension will be included in the
2915 * ServerHello.
2916 */
SSL_CTX_set_npn_advertised_cb(SSL_CTX * ctx,SSL_CTX_npn_advertised_cb_func cb,void * arg)2917 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2918 SSL_CTX_npn_advertised_cb_func cb,
2919 void *arg)
2920 {
2921 ctx->ext.npn_advertised_cb = cb;
2922 ctx->ext.npn_advertised_cb_arg = arg;
2923 }
2924
2925 /*
2926 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2927 * client needs to select a protocol from the server's provided list. |out|
2928 * must be set to point to the selected protocol (which may be within |in|).
2929 * The length of the protocol name must be written into |outlen|. The
2930 * server's advertised protocols are provided in |in| and |inlen|. The
2931 * callback can assume that |in| is syntactically valid. The client must
2932 * select a protocol. It is fatal to the connection if this callback returns
2933 * a value other than SSL_TLSEXT_ERR_OK.
2934 */
SSL_CTX_set_npn_select_cb(SSL_CTX * ctx,SSL_CTX_npn_select_cb_func cb,void * arg)2935 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
2936 SSL_CTX_npn_select_cb_func cb,
2937 void *arg)
2938 {
2939 ctx->ext.npn_select_cb = cb;
2940 ctx->ext.npn_select_cb_arg = arg;
2941 }
2942 #endif
2943
alpn_value_ok(const unsigned char * protos,unsigned int protos_len)2944 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
2945 {
2946 unsigned int idx;
2947
2948 if (protos_len < 2 || protos == NULL)
2949 return 0;
2950
2951 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
2952 if (protos[idx] == 0)
2953 return 0;
2954 }
2955 return idx == protos_len;
2956 }
2957 /*
2958 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2959 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2960 * length-prefixed strings). Returns 0 on success.
2961 */
SSL_CTX_set_alpn_protos(SSL_CTX * ctx,const unsigned char * protos,unsigned int protos_len)2962 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2963 unsigned int protos_len)
2964 {
2965 unsigned char *alpn;
2966
2967 if (protos_len == 0 || protos == NULL) {
2968 OPENSSL_free(ctx->ext.alpn);
2969 ctx->ext.alpn = NULL;
2970 ctx->ext.alpn_len = 0;
2971 return 0;
2972 }
2973 /* Not valid per RFC */
2974 if (!alpn_value_ok(protos, protos_len))
2975 return 1;
2976
2977 alpn = OPENSSL_memdup(protos, protos_len);
2978 if (alpn == NULL) {
2979 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2980 return 1;
2981 }
2982 OPENSSL_free(ctx->ext.alpn);
2983 ctx->ext.alpn = alpn;
2984 ctx->ext.alpn_len = protos_len;
2985
2986 return 0;
2987 }
2988
2989 /*
2990 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2991 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2992 * length-prefixed strings). Returns 0 on success.
2993 */
SSL_set_alpn_protos(SSL * ssl,const unsigned char * protos,unsigned int protos_len)2994 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2995 unsigned int protos_len)
2996 {
2997 unsigned char *alpn;
2998
2999 if (protos_len == 0 || protos == NULL) {
3000 OPENSSL_free(ssl->ext.alpn);
3001 ssl->ext.alpn = NULL;
3002 ssl->ext.alpn_len = 0;
3003 return 0;
3004 }
3005 /* Not valid per RFC */
3006 if (!alpn_value_ok(protos, protos_len))
3007 return 1;
3008
3009 alpn = OPENSSL_memdup(protos, protos_len);
3010 if (alpn == NULL) {
3011 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
3012 return 1;
3013 }
3014 OPENSSL_free(ssl->ext.alpn);
3015 ssl->ext.alpn = alpn;
3016 ssl->ext.alpn_len = protos_len;
3017
3018 return 0;
3019 }
3020
3021 /*
3022 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3023 * called during ClientHello processing in order to select an ALPN protocol
3024 * from the client's list of offered protocols.
3025 */
SSL_CTX_set_alpn_select_cb(SSL_CTX * ctx,SSL_CTX_alpn_select_cb_func cb,void * arg)3026 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3027 SSL_CTX_alpn_select_cb_func cb,
3028 void *arg)
3029 {
3030 ctx->ext.alpn_select_cb = cb;
3031 ctx->ext.alpn_select_cb_arg = arg;
3032 }
3033
3034 /*
3035 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3036 * On return it sets |*data| to point to |*len| bytes of protocol name
3037 * (not including the leading length-prefix byte). If the server didn't
3038 * respond with a negotiated protocol then |*len| will be zero.
3039 */
SSL_get0_alpn_selected(const SSL * ssl,const unsigned char ** data,unsigned int * len)3040 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3041 unsigned int *len)
3042 {
3043 *data = NULL;
3044 if (ssl->s3)
3045 *data = ssl->s3->alpn_selected;
3046 if (*data == NULL)
3047 *len = 0;
3048 else
3049 *len = (unsigned int)ssl->s3->alpn_selected_len;
3050 }
3051
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)3052 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3053 const char *label, size_t llen,
3054 const unsigned char *context, size_t contextlen,
3055 int use_context)
3056 {
3057 if (s->session == NULL
3058 || (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER))
3059 return -1;
3060
3061 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
3062 llen, context,
3063 contextlen, use_context);
3064 }
3065
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)3066 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3067 const char *label, size_t llen,
3068 const unsigned char *context,
3069 size_t contextlen)
3070 {
3071 if (s->version != TLS1_3_VERSION)
3072 return 0;
3073
3074 return tls13_export_keying_material_early(s, out, olen, label, llen,
3075 context, contextlen);
3076 }
3077
ssl_session_hash(const SSL_SESSION * a)3078 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3079 {
3080 const unsigned char *session_id = a->session_id;
3081 unsigned long l;
3082 unsigned char tmp_storage[4];
3083
3084 if (a->session_id_length < sizeof(tmp_storage)) {
3085 memset(tmp_storage, 0, sizeof(tmp_storage));
3086 memcpy(tmp_storage, a->session_id, a->session_id_length);
3087 session_id = tmp_storage;
3088 }
3089
3090 l = (unsigned long)
3091 ((unsigned long)session_id[0]) |
3092 ((unsigned long)session_id[1] << 8L) |
3093 ((unsigned long)session_id[2] << 16L) |
3094 ((unsigned long)session_id[3] << 24L);
3095 return l;
3096 }
3097
3098 /*
3099 * NB: If this function (or indeed the hash function which uses a sort of
3100 * coarser function than this one) is changed, ensure
3101 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3102 * being able to construct an SSL_SESSION that will collide with any existing
3103 * session with a matching session ID.
3104 */
ssl_session_cmp(const SSL_SESSION * a,const SSL_SESSION * b)3105 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3106 {
3107 if (a->ssl_version != b->ssl_version)
3108 return 1;
3109 if (a->session_id_length != b->session_id_length)
3110 return 1;
3111 return memcmp(a->session_id, b->session_id, a->session_id_length);
3112 }
3113
3114 /*
3115 * These wrapper functions should remain rather than redeclaring
3116 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3117 * variable. The reason is that the functions aren't static, they're exposed
3118 * via ssl.h.
3119 */
3120
SSL_CTX_new(const SSL_METHOD * meth)3121 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3122 {
3123 SSL_CTX *ret = NULL;
3124
3125 if (meth == NULL) {
3126 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
3127 return NULL;
3128 }
3129
3130 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3131 return NULL;
3132
3133 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3134 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3135 goto err;
3136 }
3137 ret = OPENSSL_zalloc(sizeof(*ret));
3138 if (ret == NULL)
3139 goto err;
3140
3141 ret->method = meth;
3142 ret->min_proto_version = 0;
3143 ret->max_proto_version = 0;
3144 ret->mode = SSL_MODE_AUTO_RETRY;
3145 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3146 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3147 /* We take the system default. */
3148 ret->session_timeout = meth->get_timeout();
3149 ret->references = 1;
3150 ret->lock = CRYPTO_THREAD_lock_new();
3151 if (ret->lock == NULL) {
3152 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
3153 OPENSSL_free(ret);
3154 return NULL;
3155 }
3156 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3157 ret->verify_mode = SSL_VERIFY_NONE;
3158 if ((ret->cert = ssl_cert_new()) == NULL)
3159 goto err;
3160
3161 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3162 if (ret->sessions == NULL)
3163 goto err;
3164 ret->cert_store = X509_STORE_new();
3165 if (ret->cert_store == NULL)
3166 goto err;
3167 #ifndef OPENSSL_NO_CT
3168 ret->ctlog_store = CTLOG_STORE_new();
3169 if (ret->ctlog_store == NULL)
3170 goto err;
3171 #endif
3172
3173 if (!SSL_CTX_set_ciphersuites(ret, TLS_DEFAULT_CIPHERSUITES))
3174 goto err;
3175
3176 if (!ssl_create_cipher_list(ret->method,
3177 ret->tls13_ciphersuites,
3178 &ret->cipher_list, &ret->cipher_list_by_id,
3179 SSL_DEFAULT_CIPHER_LIST, ret->cert)
3180 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3181 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3182 goto err2;
3183 }
3184
3185 ret->param = X509_VERIFY_PARAM_new();
3186 if (ret->param == NULL)
3187 goto err;
3188
3189 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
3190 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
3191 goto err2;
3192 }
3193 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
3194 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
3195 goto err2;
3196 }
3197
3198 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3199 goto err;
3200
3201 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3202 goto err;
3203
3204 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3205 goto err;
3206
3207 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3208 goto err;
3209
3210 /* No compression for DTLS */
3211 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3212 ret->comp_methods = SSL_COMP_get_compression_methods();
3213
3214 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3215 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3216
3217 /* Setup RFC5077 ticket keys */
3218 if ((RAND_bytes(ret->ext.tick_key_name,
3219 sizeof(ret->ext.tick_key_name)) <= 0)
3220 || (RAND_priv_bytes(ret->ext.secure->tick_hmac_key,
3221 sizeof(ret->ext.secure->tick_hmac_key)) <= 0)
3222 || (RAND_priv_bytes(ret->ext.secure->tick_aes_key,
3223 sizeof(ret->ext.secure->tick_aes_key)) <= 0))
3224 ret->options |= SSL_OP_NO_TICKET;
3225
3226 if (RAND_priv_bytes(ret->ext.cookie_hmac_key,
3227 sizeof(ret->ext.cookie_hmac_key)) <= 0)
3228 goto err;
3229
3230 #ifndef OPENSSL_NO_SRP
3231 if (!SSL_CTX_SRP_CTX_init(ret))
3232 goto err;
3233 #endif
3234 #ifndef OPENSSL_NO_ENGINE
3235 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3236 # define eng_strx(x) #x
3237 # define eng_str(x) eng_strx(x)
3238 /* Use specific client engine automatically... ignore errors */
3239 {
3240 ENGINE *eng;
3241 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3242 if (!eng) {
3243 ERR_clear_error();
3244 ENGINE_load_builtin_engines();
3245 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3246 }
3247 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3248 ERR_clear_error();
3249 }
3250 # endif
3251 #endif
3252 /*
3253 * Default is to connect to non-RI servers. When RI is more widely
3254 * deployed might change this.
3255 */
3256 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
3257 /*
3258 * Disable compression by default to prevent CRIME. Applications can
3259 * re-enable compression by configuring
3260 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3261 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3262 * middlebox compatibility by default. This may be disabled by default in
3263 * a later OpenSSL version.
3264 */
3265 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3266
3267 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3268
3269 /*
3270 * We cannot usefully set a default max_early_data here (which gets
3271 * propagated in SSL_new(), for the following reason: setting the
3272 * SSL field causes tls_construct_stoc_early_data() to tell the
3273 * client that early data will be accepted when constructing a TLS 1.3
3274 * session ticket, and the client will accordingly send us early data
3275 * when using that ticket (if the client has early data to send).
3276 * However, in order for the early data to actually be consumed by
3277 * the application, the application must also have calls to
3278 * SSL_read_early_data(); otherwise we'll just skip past the early data
3279 * and ignore it. So, since the application must add calls to
3280 * SSL_read_early_data(), we also require them to add
3281 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3282 * eliminating the bandwidth-wasting early data in the case described
3283 * above.
3284 */
3285 ret->max_early_data = 0;
3286
3287 /*
3288 * Default recv_max_early_data is a fully loaded single record. Could be
3289 * split across multiple records in practice. We set this differently to
3290 * max_early_data so that, in the default case, we do not advertise any
3291 * support for early_data, but if a client were to send us some (e.g.
3292 * because of an old, stale ticket) then we will tolerate it and skip over
3293 * it.
3294 */
3295 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3296
3297 /* By default we send two session tickets automatically in TLSv1.3 */
3298 ret->num_tickets = 2;
3299
3300 ssl_ctx_system_config(ret);
3301
3302 return ret;
3303 err:
3304 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
3305 err2:
3306 SSL_CTX_free(ret);
3307 return NULL;
3308 }
3309
SSL_CTX_up_ref(SSL_CTX * ctx)3310 int SSL_CTX_up_ref(SSL_CTX *ctx)
3311 {
3312 int i;
3313
3314 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3315 return 0;
3316
3317 REF_PRINT_COUNT("SSL_CTX", ctx);
3318 REF_ASSERT_ISNT(i < 2);
3319 return ((i > 1) ? 1 : 0);
3320 }
3321
SSL_CTX_free(SSL_CTX * a)3322 void SSL_CTX_free(SSL_CTX *a)
3323 {
3324 int i;
3325
3326 if (a == NULL)
3327 return;
3328
3329 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3330 REF_PRINT_COUNT("SSL_CTX", a);
3331 if (i > 0)
3332 return;
3333 REF_ASSERT_ISNT(i < 0);
3334
3335 X509_VERIFY_PARAM_free(a->param);
3336 dane_ctx_final(&a->dane);
3337
3338 /*
3339 * Free internal session cache. However: the remove_cb() may reference
3340 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3341 * after the sessions were flushed.
3342 * As the ex_data handling routines might also touch the session cache,
3343 * the most secure solution seems to be: empty (flush) the cache, then
3344 * free ex_data, then finally free the cache.
3345 * (See ticket [openssl.org #212].)
3346 */
3347 if (a->sessions != NULL)
3348 SSL_CTX_flush_sessions(a, 0);
3349
3350 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3351 lh_SSL_SESSION_free(a->sessions);
3352 X509_STORE_free(a->cert_store);
3353 #ifndef OPENSSL_NO_CT
3354 CTLOG_STORE_free(a->ctlog_store);
3355 #endif
3356 sk_SSL_CIPHER_free(a->cipher_list);
3357 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3358 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3359 ssl_cert_free(a->cert);
3360 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3361 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3362 sk_X509_pop_free(a->extra_certs, X509_free);
3363 a->comp_methods = NULL;
3364 #ifndef OPENSSL_NO_SRTP
3365 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3366 #endif
3367 #ifndef OPENSSL_NO_SRP
3368 SSL_CTX_SRP_CTX_free(a);
3369 #endif
3370 #ifndef OPENSSL_NO_ENGINE
3371 ENGINE_finish(a->client_cert_engine);
3372 #endif
3373
3374 #ifndef OPENSSL_NO_EC
3375 OPENSSL_free(a->ext.ecpointformats);
3376 OPENSSL_free(a->ext.supportedgroups);
3377 #endif
3378 OPENSSL_free(a->ext.alpn);
3379 OPENSSL_secure_free(a->ext.secure);
3380
3381 CRYPTO_THREAD_lock_free(a->lock);
3382
3383 OPENSSL_free(a);
3384 }
3385
SSL_CTX_set_default_passwd_cb(SSL_CTX * ctx,pem_password_cb * cb)3386 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3387 {
3388 ctx->default_passwd_callback = cb;
3389 }
3390
SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX * ctx,void * u)3391 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3392 {
3393 ctx->default_passwd_callback_userdata = u;
3394 }
3395
SSL_CTX_get_default_passwd_cb(SSL_CTX * ctx)3396 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3397 {
3398 return ctx->default_passwd_callback;
3399 }
3400
SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX * ctx)3401 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3402 {
3403 return ctx->default_passwd_callback_userdata;
3404 }
3405
SSL_set_default_passwd_cb(SSL * s,pem_password_cb * cb)3406 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3407 {
3408 s->default_passwd_callback = cb;
3409 }
3410
SSL_set_default_passwd_cb_userdata(SSL * s,void * u)3411 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3412 {
3413 s->default_passwd_callback_userdata = u;
3414 }
3415
SSL_get_default_passwd_cb(SSL * s)3416 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3417 {
3418 return s->default_passwd_callback;
3419 }
3420
SSL_get_default_passwd_cb_userdata(SSL * s)3421 void *SSL_get_default_passwd_cb_userdata(SSL *s)
3422 {
3423 return s->default_passwd_callback_userdata;
3424 }
3425
SSL_CTX_set_cert_verify_callback(SSL_CTX * ctx,int (* cb)(X509_STORE_CTX *,void *),void * arg)3426 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3427 int (*cb) (X509_STORE_CTX *, void *),
3428 void *arg)
3429 {
3430 ctx->app_verify_callback = cb;
3431 ctx->app_verify_arg = arg;
3432 }
3433
SSL_CTX_set_verify(SSL_CTX * ctx,int mode,int (* cb)(int,X509_STORE_CTX *))3434 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3435 int (*cb) (int, X509_STORE_CTX *))
3436 {
3437 ctx->verify_mode = mode;
3438 ctx->default_verify_callback = cb;
3439 }
3440
SSL_CTX_set_verify_depth(SSL_CTX * ctx,int depth)3441 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3442 {
3443 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3444 }
3445
SSL_CTX_set_cert_cb(SSL_CTX * c,int (* cb)(SSL * ssl,void * arg),void * arg)3446 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3447 {
3448 ssl_cert_set_cert_cb(c->cert, cb, arg);
3449 }
3450
SSL_set_cert_cb(SSL * s,int (* cb)(SSL * ssl,void * arg),void * arg)3451 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3452 {
3453 ssl_cert_set_cert_cb(s->cert, cb, arg);
3454 }
3455
ssl_set_masks(SSL * s)3456 void ssl_set_masks(SSL *s)
3457 {
3458 CERT *c = s->cert;
3459 uint32_t *pvalid = s->s3->tmp.valid_flags;
3460 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3461 unsigned long mask_k, mask_a;
3462 #ifndef OPENSSL_NO_EC
3463 int have_ecc_cert, ecdsa_ok;
3464 #endif
3465 if (c == NULL)
3466 return;
3467
3468 #ifndef OPENSSL_NO_DH
3469 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
3470 #else
3471 dh_tmp = 0;
3472 #endif
3473
3474 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3475 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3476 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3477 #ifndef OPENSSL_NO_EC
3478 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3479 #endif
3480 mask_k = 0;
3481 mask_a = 0;
3482
3483 #ifdef CIPHER_DEBUG
3484 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
3485 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3486 #endif
3487
3488 #ifndef OPENSSL_NO_GOST
3489 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3490 mask_k |= SSL_kGOST;
3491 mask_a |= SSL_aGOST12;
3492 }
3493 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3494 mask_k |= SSL_kGOST;
3495 mask_a |= SSL_aGOST12;
3496 }
3497 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3498 mask_k |= SSL_kGOST;
3499 mask_a |= SSL_aGOST01;
3500 }
3501 #endif
3502
3503 if (rsa_enc)
3504 mask_k |= SSL_kRSA;
3505
3506 if (dh_tmp)
3507 mask_k |= SSL_kDHE;
3508
3509 /*
3510 * If we only have an RSA-PSS certificate allow RSA authentication
3511 * if TLS 1.2 and peer supports it.
3512 */
3513
3514 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3515 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3516 && TLS1_get_version(s) == TLS1_2_VERSION))
3517 mask_a |= SSL_aRSA;
3518
3519 if (dsa_sign) {
3520 mask_a |= SSL_aDSS;
3521 }
3522
3523 mask_a |= SSL_aNULL;
3524
3525 /*
3526 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3527 * depending on the key usage extension.
3528 */
3529 #ifndef OPENSSL_NO_EC
3530 if (have_ecc_cert) {
3531 uint32_t ex_kusage;
3532 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3533 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3534 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3535 ecdsa_ok = 0;
3536 if (ecdsa_ok)
3537 mask_a |= SSL_aECDSA;
3538 }
3539 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3540 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3541 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3542 && TLS1_get_version(s) == TLS1_2_VERSION)
3543 mask_a |= SSL_aECDSA;
3544
3545 /* Allow Ed448 for TLS 1.2 if peer supports it */
3546 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3547 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3548 && TLS1_get_version(s) == TLS1_2_VERSION)
3549 mask_a |= SSL_aECDSA;
3550 #endif
3551
3552 #ifndef OPENSSL_NO_EC
3553 mask_k |= SSL_kECDHE;
3554 #endif
3555
3556 #ifndef OPENSSL_NO_PSK
3557 mask_k |= SSL_kPSK;
3558 mask_a |= SSL_aPSK;
3559 if (mask_k & SSL_kRSA)
3560 mask_k |= SSL_kRSAPSK;
3561 if (mask_k & SSL_kDHE)
3562 mask_k |= SSL_kDHEPSK;
3563 if (mask_k & SSL_kECDHE)
3564 mask_k |= SSL_kECDHEPSK;
3565 #endif
3566
3567 s->s3->tmp.mask_k = mask_k;
3568 s->s3->tmp.mask_a = mask_a;
3569 }
3570
3571 #ifndef OPENSSL_NO_EC
3572
ssl_check_srvr_ecc_cert_and_alg(X509 * x,SSL * s)3573 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3574 {
3575 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3576 /* key usage, if present, must allow signing */
3577 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3578 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3579 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3580 return 0;
3581 }
3582 }
3583 return 1; /* all checks are ok */
3584 }
3585
3586 #endif
3587
ssl_get_server_cert_serverinfo(SSL * s,const unsigned char ** serverinfo,size_t * serverinfo_length)3588 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3589 size_t *serverinfo_length)
3590 {
3591 CERT_PKEY *cpk = s->s3->tmp.cert;
3592 *serverinfo_length = 0;
3593
3594 if (cpk == NULL || cpk->serverinfo == NULL)
3595 return 0;
3596
3597 *serverinfo = cpk->serverinfo;
3598 *serverinfo_length = cpk->serverinfo_length;
3599 return 1;
3600 }
3601
ssl_update_cache(SSL * s,int mode)3602 void ssl_update_cache(SSL *s, int mode)
3603 {
3604 int i;
3605
3606 /*
3607 * If the session_id_length is 0, we are not supposed to cache it, and it
3608 * would be rather hard to do anyway :-)
3609 */
3610 if (s->session->session_id_length == 0)
3611 return;
3612
3613 /*
3614 * If sid_ctx_length is 0 there is no specific application context
3615 * associated with this session, so when we try to resume it and
3616 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3617 * indication that this is actually a session for the proper application
3618 * context, and the *handshake* will fail, not just the resumption attempt.
3619 * Do not cache (on the server) these sessions that are not resumable
3620 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
3621 */
3622 if (s->server && s->session->sid_ctx_length == 0
3623 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
3624 return;
3625
3626 i = s->session_ctx->session_cache_mode;
3627 if ((i & mode) != 0
3628 && (!s->hit || SSL_IS_TLS13(s))) {
3629 /*
3630 * Add the session to the internal cache. In server side TLSv1.3 we
3631 * normally don't do this because by default it's a full stateless ticket
3632 * with only a dummy session id so there is no reason to cache it,
3633 * unless:
3634 * - we are doing early_data, in which case we cache so that we can
3635 * detect replays
3636 * - the application has set a remove_session_cb so needs to know about
3637 * session timeout events
3638 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
3639 */
3640 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
3641 && (!SSL_IS_TLS13(s)
3642 || !s->server
3643 || (s->max_early_data > 0
3644 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
3645 || s->session_ctx->remove_session_cb != NULL
3646 || (s->options & SSL_OP_NO_TICKET) != 0))
3647 SSL_CTX_add_session(s->session_ctx, s->session);
3648
3649 /*
3650 * Add the session to the external cache. We do this even in server side
3651 * TLSv1.3 without early data because some applications just want to
3652 * know about the creation of a session and aren't doing a full cache.
3653 */
3654 if (s->session_ctx->new_session_cb != NULL) {
3655 SSL_SESSION_up_ref(s->session);
3656 if (!s->session_ctx->new_session_cb(s, s->session))
3657 SSL_SESSION_free(s->session);
3658 }
3659 }
3660
3661 /* auto flush every 255 connections */
3662 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3663 TSAN_QUALIFIER int *stat;
3664 if (mode & SSL_SESS_CACHE_CLIENT)
3665 stat = &s->session_ctx->stats.sess_connect_good;
3666 else
3667 stat = &s->session_ctx->stats.sess_accept_good;
3668 if ((tsan_load(stat) & 0xff) == 0xff)
3669 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3670 }
3671 }
3672
SSL_CTX_get_ssl_method(const SSL_CTX * ctx)3673 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
3674 {
3675 return ctx->method;
3676 }
3677
SSL_get_ssl_method(const SSL * s)3678 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
3679 {
3680 return s->method;
3681 }
3682
SSL_set_ssl_method(SSL * s,const SSL_METHOD * meth)3683 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3684 {
3685 int ret = 1;
3686
3687 if (s->method != meth) {
3688 const SSL_METHOD *sm = s->method;
3689 int (*hf) (SSL *) = s->handshake_func;
3690
3691 if (sm->version == meth->version)
3692 s->method = meth;
3693 else {
3694 sm->ssl_free(s);
3695 s->method = meth;
3696 ret = s->method->ssl_new(s);
3697 }
3698
3699 if (hf == sm->ssl_connect)
3700 s->handshake_func = meth->ssl_connect;
3701 else if (hf == sm->ssl_accept)
3702 s->handshake_func = meth->ssl_accept;
3703 }
3704 return ret;
3705 }
3706
SSL_get_error(const SSL * s,int i)3707 int SSL_get_error(const SSL *s, int i)
3708 {
3709 int reason;
3710 unsigned long l;
3711 BIO *bio;
3712
3713 if (i > 0)
3714 return SSL_ERROR_NONE;
3715
3716 /*
3717 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3718 * where we do encode the error
3719 */
3720 if ((l = ERR_peek_error()) != 0) {
3721 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3722 return SSL_ERROR_SYSCALL;
3723 else
3724 return SSL_ERROR_SSL;
3725 }
3726
3727 if (SSL_want_read(s)) {
3728 bio = SSL_get_rbio(s);
3729 if (BIO_should_read(bio))
3730 return SSL_ERROR_WANT_READ;
3731 else if (BIO_should_write(bio))
3732 /*
3733 * This one doesn't make too much sense ... We never try to write
3734 * to the rbio, and an application program where rbio and wbio
3735 * are separate couldn't even know what it should wait for.
3736 * However if we ever set s->rwstate incorrectly (so that we have
3737 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3738 * wbio *are* the same, this test works around that bug; so it
3739 * might be safer to keep it.
3740 */
3741 return SSL_ERROR_WANT_WRITE;
3742 else if (BIO_should_io_special(bio)) {
3743 reason = BIO_get_retry_reason(bio);
3744 if (reason == BIO_RR_CONNECT)
3745 return SSL_ERROR_WANT_CONNECT;
3746 else if (reason == BIO_RR_ACCEPT)
3747 return SSL_ERROR_WANT_ACCEPT;
3748 else
3749 return SSL_ERROR_SYSCALL; /* unknown */
3750 }
3751 }
3752
3753 if (SSL_want_write(s)) {
3754 /* Access wbio directly - in order to use the buffered bio if present */
3755 bio = s->wbio;
3756 if (BIO_should_write(bio))
3757 return SSL_ERROR_WANT_WRITE;
3758 else if (BIO_should_read(bio))
3759 /*
3760 * See above (SSL_want_read(s) with BIO_should_write(bio))
3761 */
3762 return SSL_ERROR_WANT_READ;
3763 else if (BIO_should_io_special(bio)) {
3764 reason = BIO_get_retry_reason(bio);
3765 if (reason == BIO_RR_CONNECT)
3766 return SSL_ERROR_WANT_CONNECT;
3767 else if (reason == BIO_RR_ACCEPT)
3768 return SSL_ERROR_WANT_ACCEPT;
3769 else
3770 return SSL_ERROR_SYSCALL;
3771 }
3772 }
3773 if (SSL_want_x509_lookup(s))
3774 return SSL_ERROR_WANT_X509_LOOKUP;
3775 if (SSL_want_async(s))
3776 return SSL_ERROR_WANT_ASYNC;
3777 if (SSL_want_async_job(s))
3778 return SSL_ERROR_WANT_ASYNC_JOB;
3779 if (SSL_want_client_hello_cb(s))
3780 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
3781
3782 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3783 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
3784 return SSL_ERROR_ZERO_RETURN;
3785
3786 return SSL_ERROR_SYSCALL;
3787 }
3788
ssl_do_handshake_intern(void * vargs)3789 static int ssl_do_handshake_intern(void *vargs)
3790 {
3791 struct ssl_async_args *args;
3792 SSL *s;
3793
3794 args = (struct ssl_async_args *)vargs;
3795 s = args->s;
3796
3797 return s->handshake_func(s);
3798 }
3799
SSL_do_handshake(SSL * s)3800 int SSL_do_handshake(SSL *s)
3801 {
3802 int ret = 1;
3803
3804 if (s->handshake_func == NULL) {
3805 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3806 return -1;
3807 }
3808
3809 ossl_statem_check_finish_init(s, -1);
3810
3811 s->method->ssl_renegotiate_check(s, 0);
3812
3813 if (SSL_in_init(s) || SSL_in_before(s)) {
3814 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3815 struct ssl_async_args args;
3816
3817 memset(&args, 0, sizeof(args));
3818 args.s = s;
3819
3820 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3821 } else {
3822 ret = s->handshake_func(s);
3823 }
3824 }
3825 return ret;
3826 }
3827
SSL_set_accept_state(SSL * s)3828 void SSL_set_accept_state(SSL *s)
3829 {
3830 s->server = 1;
3831 s->shutdown = 0;
3832 ossl_statem_clear(s);
3833 s->handshake_func = s->method->ssl_accept;
3834 clear_ciphers(s);
3835 }
3836
SSL_set_connect_state(SSL * s)3837 void SSL_set_connect_state(SSL *s)
3838 {
3839 s->server = 0;
3840 s->shutdown = 0;
3841 ossl_statem_clear(s);
3842 s->handshake_func = s->method->ssl_connect;
3843 clear_ciphers(s);
3844 }
3845
ssl_undefined_function(SSL * s)3846 int ssl_undefined_function(SSL *s)
3847 {
3848 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3849 return 0;
3850 }
3851
ssl_undefined_void_function(void)3852 int ssl_undefined_void_function(void)
3853 {
3854 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3855 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3856 return 0;
3857 }
3858
ssl_undefined_const_function(const SSL * s)3859 int ssl_undefined_const_function(const SSL *s)
3860 {
3861 return 0;
3862 }
3863
ssl_bad_method(int ver)3864 const SSL_METHOD *ssl_bad_method(int ver)
3865 {
3866 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3867 return NULL;
3868 }
3869
ssl_protocol_to_string(int version)3870 const char *ssl_protocol_to_string(int version)
3871 {
3872 switch(version)
3873 {
3874 case TLS1_3_VERSION:
3875 return "TLSv1.3";
3876
3877 case TLS1_2_VERSION:
3878 return "TLSv1.2";
3879
3880 case TLS1_1_VERSION:
3881 return "TLSv1.1";
3882
3883 case TLS1_VERSION:
3884 return "TLSv1";
3885
3886 case SSL3_VERSION:
3887 return "SSLv3";
3888
3889 case DTLS1_BAD_VER:
3890 return "DTLSv0.9";
3891
3892 case DTLS1_VERSION:
3893 return "DTLSv1";
3894
3895 case DTLS1_2_VERSION:
3896 return "DTLSv1.2";
3897
3898 default:
3899 return "unknown";
3900 }
3901 }
3902
SSL_get_version(const SSL * s)3903 const char *SSL_get_version(const SSL *s)
3904 {
3905 return ssl_protocol_to_string(s->version);
3906 }
3907
dup_ca_names(STACK_OF (X509_NAME)** dst,STACK_OF (X509_NAME)* src)3908 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
3909 {
3910 STACK_OF(X509_NAME) *sk;
3911 X509_NAME *xn;
3912 int i;
3913
3914 if (src == NULL) {
3915 *dst = NULL;
3916 return 1;
3917 }
3918
3919 if ((sk = sk_X509_NAME_new_null()) == NULL)
3920 return 0;
3921 for (i = 0; i < sk_X509_NAME_num(src); i++) {
3922 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
3923 if (xn == NULL) {
3924 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3925 return 0;
3926 }
3927 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
3928 X509_NAME_free(xn);
3929 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3930 return 0;
3931 }
3932 }
3933 *dst = sk;
3934
3935 return 1;
3936 }
3937
SSL_dup(SSL * s)3938 SSL *SSL_dup(SSL *s)
3939 {
3940 SSL *ret;
3941 int i;
3942
3943 /* If we're not quiescent, just up_ref! */
3944 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3945 CRYPTO_UP_REF(&s->references, &i, s->lock);
3946 return s;
3947 }
3948
3949 /*
3950 * Otherwise, copy configuration state, and session if set.
3951 */
3952 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3953 return NULL;
3954
3955 if (s->session != NULL) {
3956 /*
3957 * Arranges to share the same session via up_ref. This "copies"
3958 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3959 */
3960 if (!SSL_copy_session_id(ret, s))
3961 goto err;
3962 } else {
3963 /*
3964 * No session has been established yet, so we have to expect that
3965 * s->cert or ret->cert will be changed later -- they should not both
3966 * point to the same object, and thus we can't use
3967 * SSL_copy_session_id.
3968 */
3969 if (!SSL_set_ssl_method(ret, s->method))
3970 goto err;
3971
3972 if (s->cert != NULL) {
3973 ssl_cert_free(ret->cert);
3974 ret->cert = ssl_cert_dup(s->cert);
3975 if (ret->cert == NULL)
3976 goto err;
3977 }
3978
3979 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3980 (int)s->sid_ctx_length))
3981 goto err;
3982 }
3983
3984 if (!ssl_dane_dup(ret, s))
3985 goto err;
3986 ret->version = s->version;
3987 ret->options = s->options;
3988 ret->min_proto_version = s->min_proto_version;
3989 ret->max_proto_version = s->max_proto_version;
3990 ret->mode = s->mode;
3991 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3992 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3993 ret->msg_callback = s->msg_callback;
3994 ret->msg_callback_arg = s->msg_callback_arg;
3995 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3996 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3997 ret->generate_session_id = s->generate_session_id;
3998
3999 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4000
4001 /* copy app data, a little dangerous perhaps */
4002 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4003 goto err;
4004
4005 ret->server = s->server;
4006 if (s->handshake_func) {
4007 if (s->server)
4008 SSL_set_accept_state(ret);
4009 else
4010 SSL_set_connect_state(ret);
4011 }
4012 ret->shutdown = s->shutdown;
4013 ret->hit = s->hit;
4014
4015 ret->default_passwd_callback = s->default_passwd_callback;
4016 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
4017
4018 X509_VERIFY_PARAM_inherit(ret->param, s->param);
4019
4020 /* dup the cipher_list and cipher_list_by_id stacks */
4021 if (s->cipher_list != NULL) {
4022 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
4023 goto err;
4024 }
4025 if (s->cipher_list_by_id != NULL)
4026 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
4027 == NULL)
4028 goto err;
4029
4030 /* Dup the client_CA list */
4031 if (!dup_ca_names(&ret->ca_names, s->ca_names)
4032 || !dup_ca_names(&ret->client_ca_names, s->client_ca_names))
4033 goto err;
4034
4035 return ret;
4036
4037 err:
4038 SSL_free(ret);
4039 return NULL;
4040 }
4041
ssl_clear_cipher_ctx(SSL * s)4042 void ssl_clear_cipher_ctx(SSL *s)
4043 {
4044 if (s->enc_read_ctx != NULL) {
4045 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4046 s->enc_read_ctx = NULL;
4047 }
4048 if (s->enc_write_ctx != NULL) {
4049 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4050 s->enc_write_ctx = NULL;
4051 }
4052 #ifndef OPENSSL_NO_COMP
4053 COMP_CTX_free(s->expand);
4054 s->expand = NULL;
4055 COMP_CTX_free(s->compress);
4056 s->compress = NULL;
4057 #endif
4058 }
4059
SSL_get_certificate(const SSL * s)4060 X509 *SSL_get_certificate(const SSL *s)
4061 {
4062 if (s->cert != NULL)
4063 return s->cert->key->x509;
4064 else
4065 return NULL;
4066 }
4067
SSL_get_privatekey(const SSL * s)4068 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4069 {
4070 if (s->cert != NULL)
4071 return s->cert->key->privatekey;
4072 else
4073 return NULL;
4074 }
4075
SSL_CTX_get0_certificate(const SSL_CTX * ctx)4076 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4077 {
4078 if (ctx->cert != NULL)
4079 return ctx->cert->key->x509;
4080 else
4081 return NULL;
4082 }
4083
SSL_CTX_get0_privatekey(const SSL_CTX * ctx)4084 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4085 {
4086 if (ctx->cert != NULL)
4087 return ctx->cert->key->privatekey;
4088 else
4089 return NULL;
4090 }
4091
SSL_get_current_cipher(const SSL * s)4092 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4093 {
4094 if ((s->session != NULL) && (s->session->cipher != NULL))
4095 return s->session->cipher;
4096 return NULL;
4097 }
4098
SSL_get_pending_cipher(const SSL * s)4099 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4100 {
4101 return s->s3->tmp.new_cipher;
4102 }
4103
SSL_get_current_compression(const SSL * s)4104 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4105 {
4106 #ifndef OPENSSL_NO_COMP
4107 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
4108 #else
4109 return NULL;
4110 #endif
4111 }
4112
SSL_get_current_expansion(const SSL * s)4113 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4114 {
4115 #ifndef OPENSSL_NO_COMP
4116 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
4117 #else
4118 return NULL;
4119 #endif
4120 }
4121
ssl_init_wbio_buffer(SSL * s)4122 int ssl_init_wbio_buffer(SSL *s)
4123 {
4124 BIO *bbio;
4125
4126 if (s->bbio != NULL) {
4127 /* Already buffered. */
4128 return 1;
4129 }
4130
4131 bbio = BIO_new(BIO_f_buffer());
4132 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4133 BIO_free(bbio);
4134 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
4135 return 0;
4136 }
4137 s->bbio = bbio;
4138 s->wbio = BIO_push(bbio, s->wbio);
4139
4140 return 1;
4141 }
4142
ssl_free_wbio_buffer(SSL * s)4143 int ssl_free_wbio_buffer(SSL *s)
4144 {
4145 /* callers ensure s is never null */
4146 if (s->bbio == NULL)
4147 return 1;
4148
4149 s->wbio = BIO_pop(s->wbio);
4150 BIO_free(s->bbio);
4151 s->bbio = NULL;
4152
4153 return 1;
4154 }
4155
SSL_CTX_set_quiet_shutdown(SSL_CTX * ctx,int mode)4156 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4157 {
4158 ctx->quiet_shutdown = mode;
4159 }
4160
SSL_CTX_get_quiet_shutdown(const SSL_CTX * ctx)4161 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4162 {
4163 return ctx->quiet_shutdown;
4164 }
4165
SSL_set_quiet_shutdown(SSL * s,int mode)4166 void SSL_set_quiet_shutdown(SSL *s, int mode)
4167 {
4168 s->quiet_shutdown = mode;
4169 }
4170
SSL_get_quiet_shutdown(const SSL * s)4171 int SSL_get_quiet_shutdown(const SSL *s)
4172 {
4173 return s->quiet_shutdown;
4174 }
4175
SSL_set_shutdown(SSL * s,int mode)4176 void SSL_set_shutdown(SSL *s, int mode)
4177 {
4178 s->shutdown = mode;
4179 }
4180
SSL_get_shutdown(const SSL * s)4181 int SSL_get_shutdown(const SSL *s)
4182 {
4183 return s->shutdown;
4184 }
4185
SSL_version(const SSL * s)4186 int SSL_version(const SSL *s)
4187 {
4188 return s->version;
4189 }
4190
SSL_client_version(const SSL * s)4191 int SSL_client_version(const SSL *s)
4192 {
4193 return s->client_version;
4194 }
4195
SSL_get_SSL_CTX(const SSL * ssl)4196 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4197 {
4198 return ssl->ctx;
4199 }
4200
SSL_set_SSL_CTX(SSL * ssl,SSL_CTX * ctx)4201 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4202 {
4203 CERT *new_cert;
4204 if (ssl->ctx == ctx)
4205 return ssl->ctx;
4206 if (ctx == NULL)
4207 ctx = ssl->session_ctx;
4208 new_cert = ssl_cert_dup(ctx->cert);
4209 if (new_cert == NULL) {
4210 return NULL;
4211 }
4212
4213 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
4214 ssl_cert_free(new_cert);
4215 return NULL;
4216 }
4217
4218 ssl_cert_free(ssl->cert);
4219 ssl->cert = new_cert;
4220
4221 /*
4222 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4223 * so setter APIs must prevent invalid lengths from entering the system.
4224 */
4225 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
4226 return NULL;
4227
4228 /*
4229 * If the session ID context matches that of the parent SSL_CTX,
4230 * inherit it from the new SSL_CTX as well. If however the context does
4231 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4232 * leave it unchanged.
4233 */
4234 if ((ssl->ctx != NULL) &&
4235 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4236 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
4237 ssl->sid_ctx_length = ctx->sid_ctx_length;
4238 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
4239 }
4240
4241 SSL_CTX_up_ref(ctx);
4242 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4243 ssl->ctx = ctx;
4244
4245 return ssl->ctx;
4246 }
4247
SSL_CTX_set_default_verify_paths(SSL_CTX * ctx)4248 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4249 {
4250 return X509_STORE_set_default_paths(ctx->cert_store);
4251 }
4252
SSL_CTX_set_default_verify_dir(SSL_CTX * ctx)4253 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4254 {
4255 X509_LOOKUP *lookup;
4256
4257 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4258 if (lookup == NULL)
4259 return 0;
4260 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4261
4262 /* Clear any errors if the default directory does not exist */
4263 ERR_clear_error();
4264
4265 return 1;
4266 }
4267
SSL_CTX_set_default_verify_file(SSL_CTX * ctx)4268 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4269 {
4270 X509_LOOKUP *lookup;
4271
4272 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4273 if (lookup == NULL)
4274 return 0;
4275
4276 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
4277
4278 /* Clear any errors if the default file does not exist */
4279 ERR_clear_error();
4280
4281 return 1;
4282 }
4283
SSL_CTX_load_verify_locations(SSL_CTX * ctx,const char * CAfile,const char * CApath)4284 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
4285 const char *CApath)
4286 {
4287 return X509_STORE_load_locations(ctx->cert_store, CAfile, CApath);
4288 }
4289
SSL_set_info_callback(SSL * ssl,void (* cb)(const SSL * ssl,int type,int val))4290 void SSL_set_info_callback(SSL *ssl,
4291 void (*cb) (const SSL *ssl, int type, int val))
4292 {
4293 ssl->info_callback = cb;
4294 }
4295
4296 /*
4297 * One compiler (Diab DCC) doesn't like argument names in returned function
4298 * pointer.
4299 */
SSL_get_info_callback(const SSL * ssl)4300 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4301 int /* type */ ,
4302 int /* val */ ) {
4303 return ssl->info_callback;
4304 }
4305
SSL_set_verify_result(SSL * ssl,long arg)4306 void SSL_set_verify_result(SSL *ssl, long arg)
4307 {
4308 ssl->verify_result = arg;
4309 }
4310
SSL_get_verify_result(const SSL * ssl)4311 long SSL_get_verify_result(const SSL *ssl)
4312 {
4313 return ssl->verify_result;
4314 }
4315
SSL_get_client_random(const SSL * ssl,unsigned char * out,size_t outlen)4316 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
4317 {
4318 if (outlen == 0)
4319 return sizeof(ssl->s3->client_random);
4320 if (outlen > sizeof(ssl->s3->client_random))
4321 outlen = sizeof(ssl->s3->client_random);
4322 memcpy(out, ssl->s3->client_random, outlen);
4323 return outlen;
4324 }
4325
SSL_get_server_random(const SSL * ssl,unsigned char * out,size_t outlen)4326 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
4327 {
4328 if (outlen == 0)
4329 return sizeof(ssl->s3->server_random);
4330 if (outlen > sizeof(ssl->s3->server_random))
4331 outlen = sizeof(ssl->s3->server_random);
4332 memcpy(out, ssl->s3->server_random, outlen);
4333 return outlen;
4334 }
4335
SSL_SESSION_get_master_key(const SSL_SESSION * session,unsigned char * out,size_t outlen)4336 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
4337 unsigned char *out, size_t outlen)
4338 {
4339 if (outlen == 0)
4340 return session->master_key_length;
4341 if (outlen > session->master_key_length)
4342 outlen = session->master_key_length;
4343 memcpy(out, session->master_key, outlen);
4344 return outlen;
4345 }
4346
SSL_SESSION_set1_master_key(SSL_SESSION * sess,const unsigned char * in,size_t len)4347 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
4348 size_t len)
4349 {
4350 if (len > sizeof(sess->master_key))
4351 return 0;
4352
4353 memcpy(sess->master_key, in, len);
4354 sess->master_key_length = len;
4355 return 1;
4356 }
4357
4358
SSL_set_ex_data(SSL * s,int idx,void * arg)4359 int SSL_set_ex_data(SSL *s, int idx, void *arg)
4360 {
4361 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4362 }
4363
SSL_get_ex_data(const SSL * s,int idx)4364 void *SSL_get_ex_data(const SSL *s, int idx)
4365 {
4366 return CRYPTO_get_ex_data(&s->ex_data, idx);
4367 }
4368
SSL_CTX_set_ex_data(SSL_CTX * s,int idx,void * arg)4369 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4370 {
4371 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4372 }
4373
SSL_CTX_get_ex_data(const SSL_CTX * s,int idx)4374 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4375 {
4376 return CRYPTO_get_ex_data(&s->ex_data, idx);
4377 }
4378
SSL_CTX_get_cert_store(const SSL_CTX * ctx)4379 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
4380 {
4381 return ctx->cert_store;
4382 }
4383
SSL_CTX_set_cert_store(SSL_CTX * ctx,X509_STORE * store)4384 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4385 {
4386 X509_STORE_free(ctx->cert_store);
4387 ctx->cert_store = store;
4388 }
4389
SSL_CTX_set1_cert_store(SSL_CTX * ctx,X509_STORE * store)4390 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4391 {
4392 if (store != NULL)
4393 X509_STORE_up_ref(store);
4394 SSL_CTX_set_cert_store(ctx, store);
4395 }
4396
SSL_want(const SSL * s)4397 int SSL_want(const SSL *s)
4398 {
4399 return s->rwstate;
4400 }
4401
4402 /**
4403 * \brief Set the callback for generating temporary DH keys.
4404 * \param ctx the SSL context.
4405 * \param dh the callback
4406 */
4407
4408 #ifndef OPENSSL_NO_DH
SSL_CTX_set_tmp_dh_callback(SSL_CTX * ctx,DH * (* dh)(SSL * ssl,int is_export,int keylength))4409 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
4410 DH *(*dh) (SSL *ssl, int is_export,
4411 int keylength))
4412 {
4413 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4414 }
4415
SSL_set_tmp_dh_callback(SSL * ssl,DH * (* dh)(SSL * ssl,int is_export,int keylength))4416 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
4417 int keylength))
4418 {
4419 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4420 }
4421 #endif
4422
4423 #ifndef OPENSSL_NO_PSK
SSL_CTX_use_psk_identity_hint(SSL_CTX * ctx,const char * identity_hint)4424 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
4425 {
4426 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4427 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4428 return 0;
4429 }
4430 OPENSSL_free(ctx->cert->psk_identity_hint);
4431 if (identity_hint != NULL) {
4432 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4433 if (ctx->cert->psk_identity_hint == NULL)
4434 return 0;
4435 } else
4436 ctx->cert->psk_identity_hint = NULL;
4437 return 1;
4438 }
4439
SSL_use_psk_identity_hint(SSL * s,const char * identity_hint)4440 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
4441 {
4442 if (s == NULL)
4443 return 0;
4444
4445 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4446 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4447 return 0;
4448 }
4449 OPENSSL_free(s->cert->psk_identity_hint);
4450 if (identity_hint != NULL) {
4451 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4452 if (s->cert->psk_identity_hint == NULL)
4453 return 0;
4454 } else
4455 s->cert->psk_identity_hint = NULL;
4456 return 1;
4457 }
4458
SSL_get_psk_identity_hint(const SSL * s)4459 const char *SSL_get_psk_identity_hint(const SSL *s)
4460 {
4461 if (s == NULL || s->session == NULL)
4462 return NULL;
4463 return s->session->psk_identity_hint;
4464 }
4465
SSL_get_psk_identity(const SSL * s)4466 const char *SSL_get_psk_identity(const SSL *s)
4467 {
4468 if (s == NULL || s->session == NULL)
4469 return NULL;
4470 return s->session->psk_identity;
4471 }
4472
SSL_set_psk_client_callback(SSL * s,SSL_psk_client_cb_func cb)4473 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
4474 {
4475 s->psk_client_callback = cb;
4476 }
4477
SSL_CTX_set_psk_client_callback(SSL_CTX * ctx,SSL_psk_client_cb_func cb)4478 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
4479 {
4480 ctx->psk_client_callback = cb;
4481 }
4482
SSL_set_psk_server_callback(SSL * s,SSL_psk_server_cb_func cb)4483 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
4484 {
4485 s->psk_server_callback = cb;
4486 }
4487
SSL_CTX_set_psk_server_callback(SSL_CTX * ctx,SSL_psk_server_cb_func cb)4488 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
4489 {
4490 ctx->psk_server_callback = cb;
4491 }
4492 #endif
4493
SSL_set_psk_find_session_callback(SSL * s,SSL_psk_find_session_cb_func cb)4494 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4495 {
4496 s->psk_find_session_cb = cb;
4497 }
4498
SSL_CTX_set_psk_find_session_callback(SSL_CTX * ctx,SSL_psk_find_session_cb_func cb)4499 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4500 SSL_psk_find_session_cb_func cb)
4501 {
4502 ctx->psk_find_session_cb = cb;
4503 }
4504
SSL_set_psk_use_session_callback(SSL * s,SSL_psk_use_session_cb_func cb)4505 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4506 {
4507 s->psk_use_session_cb = cb;
4508 }
4509
SSL_CTX_set_psk_use_session_callback(SSL_CTX * ctx,SSL_psk_use_session_cb_func cb)4510 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4511 SSL_psk_use_session_cb_func cb)
4512 {
4513 ctx->psk_use_session_cb = cb;
4514 }
4515
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))4516 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4517 void (*cb) (int write_p, int version,
4518 int content_type, const void *buf,
4519 size_t len, SSL *ssl, void *arg))
4520 {
4521 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4522 }
4523
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))4524 void SSL_set_msg_callback(SSL *ssl,
4525 void (*cb) (int write_p, int version,
4526 int content_type, const void *buf,
4527 size_t len, SSL *ssl, void *arg))
4528 {
4529 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4530 }
4531
SSL_CTX_set_not_resumable_session_callback(SSL_CTX * ctx,int (* cb)(SSL * ssl,int is_forward_secure))4532 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4533 int (*cb) (SSL *ssl,
4534 int
4535 is_forward_secure))
4536 {
4537 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4538 (void (*)(void))cb);
4539 }
4540
SSL_set_not_resumable_session_callback(SSL * ssl,int (* cb)(SSL * ssl,int is_forward_secure))4541 void SSL_set_not_resumable_session_callback(SSL *ssl,
4542 int (*cb) (SSL *ssl,
4543 int is_forward_secure))
4544 {
4545 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4546 (void (*)(void))cb);
4547 }
4548
SSL_CTX_set_record_padding_callback(SSL_CTX * ctx,size_t (* cb)(SSL * ssl,int type,size_t len,void * arg))4549 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4550 size_t (*cb) (SSL *ssl, int type,
4551 size_t len, void *arg))
4552 {
4553 ctx->record_padding_cb = cb;
4554 }
4555
SSL_CTX_set_record_padding_callback_arg(SSL_CTX * ctx,void * arg)4556 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4557 {
4558 ctx->record_padding_arg = arg;
4559 }
4560
SSL_CTX_get_record_padding_callback_arg(const SSL_CTX * ctx)4561 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
4562 {
4563 return ctx->record_padding_arg;
4564 }
4565
SSL_CTX_set_block_padding(SSL_CTX * ctx,size_t block_size)4566 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4567 {
4568 /* block size of 0 or 1 is basically no padding */
4569 if (block_size == 1)
4570 ctx->block_padding = 0;
4571 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4572 ctx->block_padding = block_size;
4573 else
4574 return 0;
4575 return 1;
4576 }
4577
SSL_set_record_padding_callback(SSL * ssl,size_t (* cb)(SSL * ssl,int type,size_t len,void * arg))4578 int SSL_set_record_padding_callback(SSL *ssl,
4579 size_t (*cb) (SSL *ssl, int type,
4580 size_t len, void *arg))
4581 {
4582 BIO *b;
4583
4584 b = SSL_get_wbio(ssl);
4585 if (b == NULL || !BIO_get_ktls_send(b)) {
4586 ssl->record_padding_cb = cb;
4587 return 1;
4588 }
4589 return 0;
4590 }
4591
SSL_set_record_padding_callback_arg(SSL * ssl,void * arg)4592 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4593 {
4594 ssl->record_padding_arg = arg;
4595 }
4596
SSL_get_record_padding_callback_arg(const SSL * ssl)4597 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
4598 {
4599 return ssl->record_padding_arg;
4600 }
4601
SSL_set_block_padding(SSL * ssl,size_t block_size)4602 int SSL_set_block_padding(SSL *ssl, size_t block_size)
4603 {
4604 /* block size of 0 or 1 is basically no padding */
4605 if (block_size == 1)
4606 ssl->block_padding = 0;
4607 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4608 ssl->block_padding = block_size;
4609 else
4610 return 0;
4611 return 1;
4612 }
4613
SSL_set_num_tickets(SSL * s,size_t num_tickets)4614 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
4615 {
4616 s->num_tickets = num_tickets;
4617
4618 return 1;
4619 }
4620
SSL_get_num_tickets(const SSL * s)4621 size_t SSL_get_num_tickets(const SSL *s)
4622 {
4623 return s->num_tickets;
4624 }
4625
SSL_CTX_set_num_tickets(SSL_CTX * ctx,size_t num_tickets)4626 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
4627 {
4628 ctx->num_tickets = num_tickets;
4629
4630 return 1;
4631 }
4632
SSL_CTX_get_num_tickets(const SSL_CTX * ctx)4633 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
4634 {
4635 return ctx->num_tickets;
4636 }
4637
4638 /*
4639 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4640 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4641 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4642 * Returns the newly allocated ctx;
4643 */
4644
ssl_replace_hash(EVP_MD_CTX ** hash,const EVP_MD * md)4645 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4646 {
4647 ssl_clear_hash_ctx(hash);
4648 *hash = EVP_MD_CTX_new();
4649 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4650 EVP_MD_CTX_free(*hash);
4651 *hash = NULL;
4652 return NULL;
4653 }
4654 return *hash;
4655 }
4656
ssl_clear_hash_ctx(EVP_MD_CTX ** hash)4657 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4658 {
4659
4660 EVP_MD_CTX_free(*hash);
4661 *hash = NULL;
4662 }
4663
4664 /* Retrieve handshake hashes */
ssl_handshake_hash(SSL * s,unsigned char * out,size_t outlen,size_t * hashlen)4665 int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4666 size_t *hashlen)
4667 {
4668 EVP_MD_CTX *ctx = NULL;
4669 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
4670 int hashleni = EVP_MD_CTX_size(hdgst);
4671 int ret = 0;
4672
4673 if (hashleni < 0 || (size_t)hashleni > outlen) {
4674 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4675 ERR_R_INTERNAL_ERROR);
4676 goto err;
4677 }
4678
4679 ctx = EVP_MD_CTX_new();
4680 if (ctx == NULL) {
4681 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4682 ERR_R_INTERNAL_ERROR);
4683 goto err;
4684 }
4685
4686 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4687 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4688 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4689 ERR_R_INTERNAL_ERROR);
4690 goto err;
4691 }
4692
4693 *hashlen = hashleni;
4694
4695 ret = 1;
4696 err:
4697 EVP_MD_CTX_free(ctx);
4698 return ret;
4699 }
4700
SSL_session_reused(const SSL * s)4701 int SSL_session_reused(const SSL *s)
4702 {
4703 return s->hit;
4704 }
4705
SSL_is_server(const SSL * s)4706 int SSL_is_server(const SSL *s)
4707 {
4708 return s->server;
4709 }
4710
4711 #if OPENSSL_API_COMPAT < 0x10100000L
SSL_set_debug(SSL * s,int debug)4712 void SSL_set_debug(SSL *s, int debug)
4713 {
4714 /* Old function was do-nothing anyway... */
4715 (void)s;
4716 (void)debug;
4717 }
4718 #endif
4719
SSL_set_security_level(SSL * s,int level)4720 void SSL_set_security_level(SSL *s, int level)
4721 {
4722 s->cert->sec_level = level;
4723 }
4724
SSL_get_security_level(const SSL * s)4725 int SSL_get_security_level(const SSL *s)
4726 {
4727 return s->cert->sec_level;
4728 }
4729
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))4730 void SSL_set_security_callback(SSL *s,
4731 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4732 int op, int bits, int nid,
4733 void *other, void *ex))
4734 {
4735 s->cert->sec_cb = cb;
4736 }
4737
SSL_get_security_callback(const SSL * s)4738 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4739 const SSL_CTX *ctx, int op,
4740 int bits, int nid, void *other,
4741 void *ex) {
4742 return s->cert->sec_cb;
4743 }
4744
SSL_set0_security_ex_data(SSL * s,void * ex)4745 void SSL_set0_security_ex_data(SSL *s, void *ex)
4746 {
4747 s->cert->sec_ex = ex;
4748 }
4749
SSL_get0_security_ex_data(const SSL * s)4750 void *SSL_get0_security_ex_data(const SSL *s)
4751 {
4752 return s->cert->sec_ex;
4753 }
4754
SSL_CTX_set_security_level(SSL_CTX * ctx,int level)4755 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4756 {
4757 ctx->cert->sec_level = level;
4758 }
4759
SSL_CTX_get_security_level(const SSL_CTX * ctx)4760 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4761 {
4762 return ctx->cert->sec_level;
4763 }
4764
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))4765 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4766 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4767 int op, int bits, int nid,
4768 void *other, void *ex))
4769 {
4770 ctx->cert->sec_cb = cb;
4771 }
4772
SSL_CTX_get_security_callback(const SSL_CTX * ctx)4773 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4774 const SSL_CTX *ctx,
4775 int op, int bits,
4776 int nid,
4777 void *other,
4778 void *ex) {
4779 return ctx->cert->sec_cb;
4780 }
4781
SSL_CTX_set0_security_ex_data(SSL_CTX * ctx,void * ex)4782 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4783 {
4784 ctx->cert->sec_ex = ex;
4785 }
4786
SSL_CTX_get0_security_ex_data(const SSL_CTX * ctx)4787 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4788 {
4789 return ctx->cert->sec_ex;
4790 }
4791
4792 /*
4793 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4794 * can return unsigned long, instead of the generic long return value from the
4795 * control interface.
4796 */
SSL_CTX_get_options(const SSL_CTX * ctx)4797 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4798 {
4799 return ctx->options;
4800 }
4801
SSL_get_options(const SSL * s)4802 unsigned long SSL_get_options(const SSL *s)
4803 {
4804 return s->options;
4805 }
4806
SSL_CTX_set_options(SSL_CTX * ctx,unsigned long op)4807 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4808 {
4809 return ctx->options |= op;
4810 }
4811
SSL_set_options(SSL * s,unsigned long op)4812 unsigned long SSL_set_options(SSL *s, unsigned long op)
4813 {
4814 return s->options |= op;
4815 }
4816
SSL_CTX_clear_options(SSL_CTX * ctx,unsigned long op)4817 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4818 {
4819 return ctx->options &= ~op;
4820 }
4821
SSL_clear_options(SSL * s,unsigned long op)4822 unsigned long SSL_clear_options(SSL *s, unsigned long op)
4823 {
4824 return s->options &= ~op;
4825 }
4826
STACK_OF(X509)4827 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4828 {
4829 return s->verified_chain;
4830 }
4831
4832 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4833
4834 #ifndef OPENSSL_NO_CT
4835
4836 /*
4837 * Moves SCTs from the |src| stack to the |dst| stack.
4838 * The source of each SCT will be set to |origin|.
4839 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4840 * the caller.
4841 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4842 */
ct_move_scts(STACK_OF (SCT)** dst,STACK_OF (SCT)* src,sct_source_t origin)4843 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4844 sct_source_t origin)
4845 {
4846 int scts_moved = 0;
4847 SCT *sct = NULL;
4848
4849 if (*dst == NULL) {
4850 *dst = sk_SCT_new_null();
4851 if (*dst == NULL) {
4852 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4853 goto err;
4854 }
4855 }
4856
4857 while ((sct = sk_SCT_pop(src)) != NULL) {
4858 if (SCT_set_source(sct, origin) != 1)
4859 goto err;
4860
4861 if (sk_SCT_push(*dst, sct) <= 0)
4862 goto err;
4863 scts_moved += 1;
4864 }
4865
4866 return scts_moved;
4867 err:
4868 if (sct != NULL)
4869 sk_SCT_push(src, sct); /* Put the SCT back */
4870 return -1;
4871 }
4872
4873 /*
4874 * Look for data collected during ServerHello and parse if found.
4875 * Returns the number of SCTs extracted.
4876 */
ct_extract_tls_extension_scts(SSL * s)4877 static int ct_extract_tls_extension_scts(SSL *s)
4878 {
4879 int scts_extracted = 0;
4880
4881 if (s->ext.scts != NULL) {
4882 const unsigned char *p = s->ext.scts;
4883 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
4884
4885 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4886
4887 SCT_LIST_free(scts);
4888 }
4889
4890 return scts_extracted;
4891 }
4892
4893 /*
4894 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4895 * contains an SCT X509 extension. They will be stored in |s->scts|.
4896 * Returns:
4897 * - The number of SCTs extracted, assuming an OCSP response exists.
4898 * - 0 if no OCSP response exists or it contains no SCTs.
4899 * - A negative integer if an error occurs.
4900 */
ct_extract_ocsp_response_scts(SSL * s)4901 static int ct_extract_ocsp_response_scts(SSL *s)
4902 {
4903 # ifndef OPENSSL_NO_OCSP
4904 int scts_extracted = 0;
4905 const unsigned char *p;
4906 OCSP_BASICRESP *br = NULL;
4907 OCSP_RESPONSE *rsp = NULL;
4908 STACK_OF(SCT) *scts = NULL;
4909 int i;
4910
4911 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
4912 goto err;
4913
4914 p = s->ext.ocsp.resp;
4915 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
4916 if (rsp == NULL)
4917 goto err;
4918
4919 br = OCSP_response_get1_basic(rsp);
4920 if (br == NULL)
4921 goto err;
4922
4923 for (i = 0; i < OCSP_resp_count(br); ++i) {
4924 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4925
4926 if (single == NULL)
4927 continue;
4928
4929 scts =
4930 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4931 scts_extracted =
4932 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
4933 if (scts_extracted < 0)
4934 goto err;
4935 }
4936 err:
4937 SCT_LIST_free(scts);
4938 OCSP_BASICRESP_free(br);
4939 OCSP_RESPONSE_free(rsp);
4940 return scts_extracted;
4941 # else
4942 /* Behave as if no OCSP response exists */
4943 return 0;
4944 # endif
4945 }
4946
4947 /*
4948 * Attempts to extract SCTs from the peer certificate.
4949 * Return the number of SCTs extracted, or a negative integer if an error
4950 * occurs.
4951 */
ct_extract_x509v3_extension_scts(SSL * s)4952 static int ct_extract_x509v3_extension_scts(SSL *s)
4953 {
4954 int scts_extracted = 0;
4955 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4956
4957 if (cert != NULL) {
4958 STACK_OF(SCT) *scts =
4959 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4960
4961 scts_extracted =
4962 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4963
4964 SCT_LIST_free(scts);
4965 }
4966
4967 return scts_extracted;
4968 }
4969
4970 /*
4971 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4972 * response (if it exists) and X509v3 extensions in the certificate.
4973 * Returns NULL if an error occurs.
4974 */
STACK_OF(SCT)4975 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4976 {
4977 if (!s->scts_parsed) {
4978 if (ct_extract_tls_extension_scts(s) < 0 ||
4979 ct_extract_ocsp_response_scts(s) < 0 ||
4980 ct_extract_x509v3_extension_scts(s) < 0)
4981 goto err;
4982
4983 s->scts_parsed = 1;
4984 }
4985 return s->scts;
4986 err:
4987 return NULL;
4988 }
4989
ct_permissive(const CT_POLICY_EVAL_CTX * ctx,const STACK_OF (SCT)* scts,void * unused_arg)4990 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
4991 const STACK_OF(SCT) *scts, void *unused_arg)
4992 {
4993 return 1;
4994 }
4995
ct_strict(const CT_POLICY_EVAL_CTX * ctx,const STACK_OF (SCT)* scts,void * unused_arg)4996 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
4997 const STACK_OF(SCT) *scts, void *unused_arg)
4998 {
4999 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5000 int i;
5001
5002 for (i = 0; i < count; ++i) {
5003 SCT *sct = sk_SCT_value(scts, i);
5004 int status = SCT_get_validation_status(sct);
5005
5006 if (status == SCT_VALIDATION_STATUS_VALID)
5007 return 1;
5008 }
5009 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
5010 return 0;
5011 }
5012
SSL_set_ct_validation_callback(SSL * s,ssl_ct_validation_cb callback,void * arg)5013 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5014 void *arg)
5015 {
5016 /*
5017 * Since code exists that uses the custom extension handler for CT, look
5018 * for this and throw an error if they have already registered to use CT.
5019 */
5020 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5021 TLSEXT_TYPE_signed_certificate_timestamp))
5022 {
5023 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
5024 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5025 return 0;
5026 }
5027
5028 if (callback != NULL) {
5029 /*
5030 * If we are validating CT, then we MUST accept SCTs served via OCSP
5031 */
5032 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5033 return 0;
5034 }
5035
5036 s->ct_validation_callback = callback;
5037 s->ct_validation_callback_arg = arg;
5038
5039 return 1;
5040 }
5041
SSL_CTX_set_ct_validation_callback(SSL_CTX * ctx,ssl_ct_validation_cb callback,void * arg)5042 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5043 ssl_ct_validation_cb callback, void *arg)
5044 {
5045 /*
5046 * Since code exists that uses the custom extension handler for CT, look for
5047 * this and throw an error if they have already registered to use CT.
5048 */
5049 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5050 TLSEXT_TYPE_signed_certificate_timestamp))
5051 {
5052 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
5053 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5054 return 0;
5055 }
5056
5057 ctx->ct_validation_callback = callback;
5058 ctx->ct_validation_callback_arg = arg;
5059 return 1;
5060 }
5061
SSL_ct_is_enabled(const SSL * s)5062 int SSL_ct_is_enabled(const SSL *s)
5063 {
5064 return s->ct_validation_callback != NULL;
5065 }
5066
SSL_CTX_ct_is_enabled(const SSL_CTX * ctx)5067 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5068 {
5069 return ctx->ct_validation_callback != NULL;
5070 }
5071
ssl_validate_ct(SSL * s)5072 int ssl_validate_ct(SSL *s)
5073 {
5074 int ret = 0;
5075 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5076 X509 *issuer;
5077 SSL_DANE *dane = &s->dane;
5078 CT_POLICY_EVAL_CTX *ctx = NULL;
5079 const STACK_OF(SCT) *scts;
5080
5081 /*
5082 * If no callback is set, the peer is anonymous, or its chain is invalid,
5083 * skip SCT validation - just return success. Applications that continue
5084 * handshakes without certificates, with unverified chains, or pinned leaf
5085 * certificates are outside the scope of the WebPKI and CT.
5086 *
5087 * The above exclusions notwithstanding the vast majority of peers will
5088 * have rather ordinary certificate chains validated by typical
5089 * applications that perform certificate verification and therefore will
5090 * process SCTs when enabled.
5091 */
5092 if (s->ct_validation_callback == NULL || cert == NULL ||
5093 s->verify_result != X509_V_OK ||
5094 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
5095 return 1;
5096
5097 /*
5098 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5099 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5100 */
5101 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5102 switch (dane->mtlsa->usage) {
5103 case DANETLS_USAGE_DANE_TA:
5104 case DANETLS_USAGE_DANE_EE:
5105 return 1;
5106 }
5107 }
5108
5109 ctx = CT_POLICY_EVAL_CTX_new();
5110 if (ctx == NULL) {
5111 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_VALIDATE_CT,
5112 ERR_R_MALLOC_FAILURE);
5113 goto end;
5114 }
5115
5116 issuer = sk_X509_value(s->verified_chain, 1);
5117 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5118 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5119 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
5120 CT_POLICY_EVAL_CTX_set_time(
5121 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
5122
5123 scts = SSL_get0_peer_scts(s);
5124
5125 /*
5126 * This function returns success (> 0) only when all the SCTs are valid, 0
5127 * when some are invalid, and < 0 on various internal errors (out of
5128 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5129 * reason to abort the handshake, that decision is up to the callback.
5130 * Therefore, we error out only in the unexpected case that the return
5131 * value is negative.
5132 *
5133 * XXX: One might well argue that the return value of this function is an
5134 * unfortunate design choice. Its job is only to determine the validation
5135 * status of each of the provided SCTs. So long as it correctly separates
5136 * the wheat from the chaff it should return success. Failure in this case
5137 * ought to correspond to an inability to carry out its duties.
5138 */
5139 if (SCT_LIST_validate(scts, ctx) < 0) {
5140 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5141 SSL_R_SCT_VERIFICATION_FAILED);
5142 goto end;
5143 }
5144
5145 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
5146 if (ret < 0)
5147 ret = 0; /* This function returns 0 on failure */
5148 if (!ret)
5149 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5150 SSL_R_CALLBACK_FAILED);
5151
5152 end:
5153 CT_POLICY_EVAL_CTX_free(ctx);
5154 /*
5155 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5156 * failure return code here. Also the application may wish the complete
5157 * the handshake, and then disconnect cleanly at a higher layer, after
5158 * checking the verification status of the completed connection.
5159 *
5160 * We therefore force a certificate verification failure which will be
5161 * visible via SSL_get_verify_result() and cached as part of any resumed
5162 * session.
5163 *
5164 * Note: the permissive callback is for information gathering only, always
5165 * returns success, and does not affect verification status. Only the
5166 * strict callback or a custom application-specified callback can trigger
5167 * connection failure or record a verification error.
5168 */
5169 if (ret <= 0)
5170 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
5171 return ret;
5172 }
5173
SSL_CTX_enable_ct(SSL_CTX * ctx,int validation_mode)5174 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
5175 {
5176 switch (validation_mode) {
5177 default:
5178 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5179 return 0;
5180 case SSL_CT_VALIDATION_PERMISSIVE:
5181 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
5182 case SSL_CT_VALIDATION_STRICT:
5183 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
5184 }
5185 }
5186
SSL_enable_ct(SSL * s,int validation_mode)5187 int SSL_enable_ct(SSL *s, int validation_mode)
5188 {
5189 switch (validation_mode) {
5190 default:
5191 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5192 return 0;
5193 case SSL_CT_VALIDATION_PERMISSIVE:
5194 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
5195 case SSL_CT_VALIDATION_STRICT:
5196 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
5197 }
5198 }
5199
SSL_CTX_set_default_ctlog_list_file(SSL_CTX * ctx)5200 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
5201 {
5202 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
5203 }
5204
SSL_CTX_set_ctlog_list_file(SSL_CTX * ctx,const char * path)5205 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
5206 {
5207 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
5208 }
5209
SSL_CTX_set0_ctlog_store(SSL_CTX * ctx,CTLOG_STORE * logs)5210 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
5211 {
5212 CTLOG_STORE_free(ctx->ctlog_store);
5213 ctx->ctlog_store = logs;
5214 }
5215
SSL_CTX_get0_ctlog_store(const SSL_CTX * ctx)5216 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
5217 {
5218 return ctx->ctlog_store;
5219 }
5220
5221 #endif /* OPENSSL_NO_CT */
5222
SSL_CTX_set_client_hello_cb(SSL_CTX * c,SSL_client_hello_cb_fn cb,void * arg)5223 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
5224 void *arg)
5225 {
5226 c->client_hello_cb = cb;
5227 c->client_hello_cb_arg = arg;
5228 }
5229
SSL_client_hello_isv2(SSL * s)5230 int SSL_client_hello_isv2(SSL *s)
5231 {
5232 if (s->clienthello == NULL)
5233 return 0;
5234 return s->clienthello->isv2;
5235 }
5236
SSL_client_hello_get0_legacy_version(SSL * s)5237 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
5238 {
5239 if (s->clienthello == NULL)
5240 return 0;
5241 return s->clienthello->legacy_version;
5242 }
5243
SSL_client_hello_get0_random(SSL * s,const unsigned char ** out)5244 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
5245 {
5246 if (s->clienthello == NULL)
5247 return 0;
5248 if (out != NULL)
5249 *out = s->clienthello->random;
5250 return SSL3_RANDOM_SIZE;
5251 }
5252
SSL_client_hello_get0_session_id(SSL * s,const unsigned char ** out)5253 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
5254 {
5255 if (s->clienthello == NULL)
5256 return 0;
5257 if (out != NULL)
5258 *out = s->clienthello->session_id;
5259 return s->clienthello->session_id_len;
5260 }
5261
SSL_client_hello_get0_ciphers(SSL * s,const unsigned char ** out)5262 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
5263 {
5264 if (s->clienthello == NULL)
5265 return 0;
5266 if (out != NULL)
5267 *out = PACKET_data(&s->clienthello->ciphersuites);
5268 return PACKET_remaining(&s->clienthello->ciphersuites);
5269 }
5270
SSL_client_hello_get0_compression_methods(SSL * s,const unsigned char ** out)5271 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
5272 {
5273 if (s->clienthello == NULL)
5274 return 0;
5275 if (out != NULL)
5276 *out = s->clienthello->compressions;
5277 return s->clienthello->compressions_len;
5278 }
5279
SSL_client_hello_get1_extensions_present(SSL * s,int ** out,size_t * outlen)5280 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
5281 {
5282 RAW_EXTENSION *ext;
5283 int *present;
5284 size_t num = 0, i;
5285
5286 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5287 return 0;
5288 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5289 ext = s->clienthello->pre_proc_exts + i;
5290 if (ext->present)
5291 num++;
5292 }
5293 if (num == 0) {
5294 *out = NULL;
5295 *outlen = 0;
5296 return 1;
5297 }
5298 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
5299 SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT,
5300 ERR_R_MALLOC_FAILURE);
5301 return 0;
5302 }
5303 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5304 ext = s->clienthello->pre_proc_exts + i;
5305 if (ext->present) {
5306 if (ext->received_order >= num)
5307 goto err;
5308 present[ext->received_order] = ext->type;
5309 }
5310 }
5311 *out = present;
5312 *outlen = num;
5313 return 1;
5314 err:
5315 OPENSSL_free(present);
5316 return 0;
5317 }
5318
SSL_client_hello_get0_ext(SSL * s,unsigned int type,const unsigned char ** out,size_t * outlen)5319 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
5320 size_t *outlen)
5321 {
5322 size_t i;
5323 RAW_EXTENSION *r;
5324
5325 if (s->clienthello == NULL)
5326 return 0;
5327 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5328 r = s->clienthello->pre_proc_exts + i;
5329 if (r->present && r->type == type) {
5330 if (out != NULL)
5331 *out = PACKET_data(&r->data);
5332 if (outlen != NULL)
5333 *outlen = PACKET_remaining(&r->data);
5334 return 1;
5335 }
5336 }
5337 return 0;
5338 }
5339
SSL_free_buffers(SSL * ssl)5340 int SSL_free_buffers(SSL *ssl)
5341 {
5342 RECORD_LAYER *rl = &ssl->rlayer;
5343
5344 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5345 return 0;
5346
5347 RECORD_LAYER_release(rl);
5348 return 1;
5349 }
5350
SSL_alloc_buffers(SSL * ssl)5351 int SSL_alloc_buffers(SSL *ssl)
5352 {
5353 return ssl3_setup_buffers(ssl);
5354 }
5355
SSL_CTX_set_keylog_callback(SSL_CTX * ctx,SSL_CTX_keylog_cb_func cb)5356 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5357 {
5358 ctx->keylog_callback = cb;
5359 }
5360
SSL_CTX_get_keylog_callback(const SSL_CTX * ctx)5361 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5362 {
5363 return ctx->keylog_callback;
5364 }
5365
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)5366 static int nss_keylog_int(const char *prefix,
5367 SSL *ssl,
5368 const uint8_t *parameter_1,
5369 size_t parameter_1_len,
5370 const uint8_t *parameter_2,
5371 size_t parameter_2_len)
5372 {
5373 char *out = NULL;
5374 char *cursor = NULL;
5375 size_t out_len = 0;
5376 size_t i;
5377 size_t prefix_len;
5378
5379 if (ssl->ctx->keylog_callback == NULL)
5380 return 1;
5381
5382 /*
5383 * Our output buffer will contain the following strings, rendered with
5384 * space characters in between, terminated by a NULL character: first the
5385 * prefix, then the first parameter, then the second parameter. The
5386 * meaning of each parameter depends on the specific key material being
5387 * logged. Note that the first and second parameters are encoded in
5388 * hexadecimal, so we need a buffer that is twice their lengths.
5389 */
5390 prefix_len = strlen(prefix);
5391 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
5392 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
5393 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, SSL_F_NSS_KEYLOG_INT,
5394 ERR_R_MALLOC_FAILURE);
5395 return 0;
5396 }
5397
5398 strcpy(cursor, prefix);
5399 cursor += prefix_len;
5400 *cursor++ = ' ';
5401
5402 for (i = 0; i < parameter_1_len; i++) {
5403 sprintf(cursor, "%02x", parameter_1[i]);
5404 cursor += 2;
5405 }
5406 *cursor++ = ' ';
5407
5408 for (i = 0; i < parameter_2_len; i++) {
5409 sprintf(cursor, "%02x", parameter_2[i]);
5410 cursor += 2;
5411 }
5412 *cursor = '\0';
5413
5414 ssl->ctx->keylog_callback(ssl, (const char *)out);
5415 OPENSSL_clear_free(out, out_len);
5416 return 1;
5417
5418 }
5419
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)5420 int ssl_log_rsa_client_key_exchange(SSL *ssl,
5421 const uint8_t *encrypted_premaster,
5422 size_t encrypted_premaster_len,
5423 const uint8_t *premaster,
5424 size_t premaster_len)
5425 {
5426 if (encrypted_premaster_len < 8) {
5427 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR,
5428 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
5429 return 0;
5430 }
5431
5432 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
5433 return nss_keylog_int("RSA",
5434 ssl,
5435 encrypted_premaster,
5436 8,
5437 premaster,
5438 premaster_len);
5439 }
5440
ssl_log_secret(SSL * ssl,const char * label,const uint8_t * secret,size_t secret_len)5441 int ssl_log_secret(SSL *ssl,
5442 const char *label,
5443 const uint8_t *secret,
5444 size_t secret_len)
5445 {
5446 return nss_keylog_int(label,
5447 ssl,
5448 ssl->s3->client_random,
5449 SSL3_RANDOM_SIZE,
5450 secret,
5451 secret_len);
5452 }
5453
5454 #define SSLV2_CIPHER_LEN 3
5455
ssl_cache_cipherlist(SSL * s,PACKET * cipher_suites,int sslv2format)5456 int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
5457 {
5458 int n;
5459
5460 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5461
5462 if (PACKET_remaining(cipher_suites) == 0) {
5463 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SSL_CACHE_CIPHERLIST,
5464 SSL_R_NO_CIPHERS_SPECIFIED);
5465 return 0;
5466 }
5467
5468 if (PACKET_remaining(cipher_suites) % n != 0) {
5469 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5470 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5471 return 0;
5472 }
5473
5474 OPENSSL_free(s->s3->tmp.ciphers_raw);
5475 s->s3->tmp.ciphers_raw = NULL;
5476 s->s3->tmp.ciphers_rawlen = 0;
5477
5478 if (sslv2format) {
5479 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5480 PACKET sslv2ciphers = *cipher_suites;
5481 unsigned int leadbyte;
5482 unsigned char *raw;
5483
5484 /*
5485 * We store the raw ciphers list in SSLv3+ format so we need to do some
5486 * preprocessing to convert the list first. If there are any SSLv2 only
5487 * ciphersuites with a non-zero leading byte then we are going to
5488 * slightly over allocate because we won't store those. But that isn't a
5489 * problem.
5490 */
5491 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
5492 s->s3->tmp.ciphers_raw = raw;
5493 if (raw == NULL) {
5494 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5495 ERR_R_MALLOC_FAILURE);
5496 return 0;
5497 }
5498 for (s->s3->tmp.ciphers_rawlen = 0;
5499 PACKET_remaining(&sslv2ciphers) > 0;
5500 raw += TLS_CIPHER_LEN) {
5501 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5502 || (leadbyte == 0
5503 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5504 TLS_CIPHER_LEN))
5505 || (leadbyte != 0
5506 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
5507 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5508 SSL_R_BAD_PACKET);
5509 OPENSSL_free(s->s3->tmp.ciphers_raw);
5510 s->s3->tmp.ciphers_raw = NULL;
5511 s->s3->tmp.ciphers_rawlen = 0;
5512 return 0;
5513 }
5514 if (leadbyte == 0)
5515 s->s3->tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5516 }
5517 } else if (!PACKET_memdup(cipher_suites, &s->s3->tmp.ciphers_raw,
5518 &s->s3->tmp.ciphers_rawlen)) {
5519 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5520 ERR_R_INTERNAL_ERROR);
5521 return 0;
5522 }
5523 return 1;
5524 }
5525
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)5526 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5527 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5528 STACK_OF(SSL_CIPHER) **scsvs)
5529 {
5530 PACKET pkt;
5531
5532 if (!PACKET_buf_init(&pkt, bytes, len))
5533 return 0;
5534 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
5535 }
5536
bytes_to_cipher_list(SSL * s,PACKET * cipher_suites,STACK_OF (SSL_CIPHER)** skp,STACK_OF (SSL_CIPHER)** scsvs_out,int sslv2format,int fatal)5537 int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5538 STACK_OF(SSL_CIPHER) **skp,
5539 STACK_OF(SSL_CIPHER) **scsvs_out,
5540 int sslv2format, int fatal)
5541 {
5542 const SSL_CIPHER *c;
5543 STACK_OF(SSL_CIPHER) *sk = NULL;
5544 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5545 int n;
5546 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5547 unsigned char cipher[SSLV2_CIPHER_LEN];
5548
5549 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5550
5551 if (PACKET_remaining(cipher_suites) == 0) {
5552 if (fatal)
5553 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_BYTES_TO_CIPHER_LIST,
5554 SSL_R_NO_CIPHERS_SPECIFIED);
5555 else
5556 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
5557 return 0;
5558 }
5559
5560 if (PACKET_remaining(cipher_suites) % n != 0) {
5561 if (fatal)
5562 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5563 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5564 else
5565 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5566 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5567 return 0;
5568 }
5569
5570 sk = sk_SSL_CIPHER_new_null();
5571 scsvs = sk_SSL_CIPHER_new_null();
5572 if (sk == NULL || scsvs == NULL) {
5573 if (fatal)
5574 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5575 ERR_R_MALLOC_FAILURE);
5576 else
5577 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5578 goto err;
5579 }
5580
5581 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5582 /*
5583 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5584 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5585 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5586 */
5587 if (sslv2format && cipher[0] != '\0')
5588 continue;
5589
5590 /* For SSLv2-compat, ignore leading 0-byte. */
5591 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5592 if (c != NULL) {
5593 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5594 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5595 if (fatal)
5596 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
5597 SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5598 else
5599 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5600 goto err;
5601 }
5602 }
5603 }
5604 if (PACKET_remaining(cipher_suites) > 0) {
5605 if (fatal)
5606 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5607 SSL_R_BAD_LENGTH);
5608 else
5609 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
5610 goto err;
5611 }
5612
5613 if (skp != NULL)
5614 *skp = sk;
5615 else
5616 sk_SSL_CIPHER_free(sk);
5617 if (scsvs_out != NULL)
5618 *scsvs_out = scsvs;
5619 else
5620 sk_SSL_CIPHER_free(scsvs);
5621 return 1;
5622 err:
5623 sk_SSL_CIPHER_free(sk);
5624 sk_SSL_CIPHER_free(scsvs);
5625 return 0;
5626 }
5627
SSL_CTX_set_max_early_data(SSL_CTX * ctx,uint32_t max_early_data)5628 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5629 {
5630 ctx->max_early_data = max_early_data;
5631
5632 return 1;
5633 }
5634
SSL_CTX_get_max_early_data(const SSL_CTX * ctx)5635 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5636 {
5637 return ctx->max_early_data;
5638 }
5639
SSL_set_max_early_data(SSL * s,uint32_t max_early_data)5640 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5641 {
5642 s->max_early_data = max_early_data;
5643
5644 return 1;
5645 }
5646
SSL_get_max_early_data(const SSL * s)5647 uint32_t SSL_get_max_early_data(const SSL *s)
5648 {
5649 return s->max_early_data;
5650 }
5651
SSL_CTX_set_recv_max_early_data(SSL_CTX * ctx,uint32_t recv_max_early_data)5652 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
5653 {
5654 ctx->recv_max_early_data = recv_max_early_data;
5655
5656 return 1;
5657 }
5658
SSL_CTX_get_recv_max_early_data(const SSL_CTX * ctx)5659 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
5660 {
5661 return ctx->recv_max_early_data;
5662 }
5663
SSL_set_recv_max_early_data(SSL * s,uint32_t recv_max_early_data)5664 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
5665 {
5666 s->recv_max_early_data = recv_max_early_data;
5667
5668 return 1;
5669 }
5670
SSL_get_recv_max_early_data(const SSL * s)5671 uint32_t SSL_get_recv_max_early_data(const SSL *s)
5672 {
5673 return s->recv_max_early_data;
5674 }
5675
ssl_get_max_send_fragment(const SSL * ssl)5676 __owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5677 {
5678 /* Return any active Max Fragment Len extension */
5679 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5680 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5681
5682 /* return current SSL connection setting */
5683 return ssl->max_send_fragment;
5684 }
5685
ssl_get_split_send_fragment(const SSL * ssl)5686 __owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5687 {
5688 /* Return a value regarding an active Max Fragment Len extension */
5689 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5690 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5691 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5692
5693 /* else limit |split_send_fragment| to current |max_send_fragment| */
5694 if (ssl->split_send_fragment > ssl->max_send_fragment)
5695 return ssl->max_send_fragment;
5696
5697 /* return current SSL connection setting */
5698 return ssl->split_send_fragment;
5699 }
5700
SSL_stateless(SSL * s)5701 int SSL_stateless(SSL *s)
5702 {
5703 int ret;
5704
5705 /* Ensure there is no state left over from a previous invocation */
5706 if (!SSL_clear(s))
5707 return 0;
5708
5709 ERR_clear_error();
5710
5711 s->s3->flags |= TLS1_FLAGS_STATELESS;
5712 ret = SSL_accept(s);
5713 s->s3->flags &= ~TLS1_FLAGS_STATELESS;
5714
5715 if (ret > 0 && s->ext.cookieok)
5716 return 1;
5717
5718 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5719 return 0;
5720
5721 return -1;
5722 }
5723
SSL_CTX_set_post_handshake_auth(SSL_CTX * ctx,int val)5724 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
5725 {
5726 ctx->pha_enabled = val;
5727 }
5728
SSL_set_post_handshake_auth(SSL * ssl,int val)5729 void SSL_set_post_handshake_auth(SSL *ssl, int val)
5730 {
5731 ssl->pha_enabled = val;
5732 }
5733
SSL_verify_client_post_handshake(SSL * ssl)5734 int SSL_verify_client_post_handshake(SSL *ssl)
5735 {
5736 if (!SSL_IS_TLS13(ssl)) {
5737 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_WRONG_SSL_VERSION);
5738 return 0;
5739 }
5740 if (!ssl->server) {
5741 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_NOT_SERVER);
5742 return 0;
5743 }
5744
5745 if (!SSL_is_init_finished(ssl)) {
5746 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_STILL_IN_INIT);
5747 return 0;
5748 }
5749
5750 switch (ssl->post_handshake_auth) {
5751 case SSL_PHA_NONE:
5752 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_EXTENSION_NOT_RECEIVED);
5753 return 0;
5754 default:
5755 case SSL_PHA_EXT_SENT:
5756 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, ERR_R_INTERNAL_ERROR);
5757 return 0;
5758 case SSL_PHA_EXT_RECEIVED:
5759 break;
5760 case SSL_PHA_REQUEST_PENDING:
5761 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_PENDING);
5762 return 0;
5763 case SSL_PHA_REQUESTED:
5764 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_SENT);
5765 return 0;
5766 }
5767
5768 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5769
5770 /* checks verify_mode and algorithm_auth */
5771 if (!send_certificate_request(ssl)) {
5772 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
5773 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_INVALID_CONFIG);
5774 return 0;
5775 }
5776
5777 ossl_statem_set_in_init(ssl, 1);
5778 return 1;
5779 }
5780
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)5781 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5782 SSL_CTX_generate_session_ticket_fn gen_cb,
5783 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5784 void *arg)
5785 {
5786 ctx->generate_ticket_cb = gen_cb;
5787 ctx->decrypt_ticket_cb = dec_cb;
5788 ctx->ticket_cb_data = arg;
5789 return 1;
5790 }
5791
SSL_CTX_set_allow_early_data_cb(SSL_CTX * ctx,SSL_allow_early_data_cb_fn cb,void * arg)5792 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
5793 SSL_allow_early_data_cb_fn cb,
5794 void *arg)
5795 {
5796 ctx->allow_early_data_cb = cb;
5797 ctx->allow_early_data_cb_data = arg;
5798 }
5799
SSL_set_allow_early_data_cb(SSL * s,SSL_allow_early_data_cb_fn cb,void * arg)5800 void SSL_set_allow_early_data_cb(SSL *s,
5801 SSL_allow_early_data_cb_fn cb,
5802 void *arg)
5803 {
5804 s->allow_early_data_cb = cb;
5805 s->allow_early_data_cb_data = arg;
5806 }
5807