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