1 /*
2 * Copyright 1995-2024 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 Apache License 2.0 (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 "internal/e_os.h"
13 #include "internal/e_winsock.h"
14 #include "ssl_local.h"
15
16 #include <openssl/objects.h>
17 #include <openssl/x509v3.h>
18 #include <openssl/rand.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 <openssl/trace.h>
25 #include <openssl/core_names.h>
26 #include <openssl/provider.h>
27 #include "internal/cryptlib.h"
28 #include "internal/nelem.h"
29 #include "internal/refcount.h"
30 #include "internal/ktls.h"
31 #include "internal/to_hex.h"
32 #include "quic/quic_local.h"
33
ssl_undefined_function_3(SSL_CONNECTION * sc,unsigned char * r,unsigned char * s,size_t t,size_t * u)34 static int ssl_undefined_function_3(SSL_CONNECTION *sc, unsigned char *r,
35 unsigned char *s, size_t t, size_t *u)
36 {
37 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
38 }
39
ssl_undefined_function_4(SSL_CONNECTION * sc,int r)40 static int ssl_undefined_function_4(SSL_CONNECTION *sc, int r)
41 {
42 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
43 }
44
ssl_undefined_function_5(SSL_CONNECTION * sc,const char * r,size_t s,unsigned char * t)45 static size_t ssl_undefined_function_5(SSL_CONNECTION *sc, const char *r,
46 size_t s, unsigned char *t)
47 {
48 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
49 }
50
ssl_undefined_function_6(int r)51 static int ssl_undefined_function_6(int r)
52 {
53 return ssl_undefined_function(NULL);
54 }
55
ssl_undefined_function_7(SSL_CONNECTION * sc,unsigned char * r,size_t s,const char * t,size_t u,const unsigned char * v,size_t w,int x)56 static int ssl_undefined_function_7(SSL_CONNECTION *sc, unsigned char *r,
57 size_t s, const char *t, size_t u,
58 const unsigned char *v, size_t w, int x)
59 {
60 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
61 }
62
ssl_undefined_function_8(SSL_CONNECTION * sc)63 static int ssl_undefined_function_8(SSL_CONNECTION *sc)
64 {
65 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
66 }
67
68 const SSL3_ENC_METHOD ssl3_undef_enc_method = {
69 ssl_undefined_function_8,
70 ssl_undefined_function_3,
71 ssl_undefined_function_4,
72 ssl_undefined_function_5,
73 NULL, /* client_finished_label */
74 0, /* client_finished_label_len */
75 NULL, /* server_finished_label */
76 0, /* server_finished_label_len */
77 ssl_undefined_function_6,
78 ssl_undefined_function_7,
79 };
80
81 struct ssl_async_args {
82 SSL *s;
83 void *buf;
84 size_t num;
85 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
86 union {
87 int (*func_read) (SSL *, void *, size_t, size_t *);
88 int (*func_write) (SSL *, const void *, size_t, size_t *);
89 int (*func_other) (SSL *);
90 } f;
91 };
92
93 static const struct {
94 uint8_t mtype;
95 uint8_t ord;
96 int nid;
97 } dane_mds[] = {
98 {
99 DANETLS_MATCHING_FULL, 0, NID_undef
100 },
101 {
102 DANETLS_MATCHING_2256, 1, NID_sha256
103 },
104 {
105 DANETLS_MATCHING_2512, 2, NID_sha512
106 },
107 };
108
dane_ctx_enable(struct dane_ctx_st * dctx)109 static int dane_ctx_enable(struct dane_ctx_st *dctx)
110 {
111 const EVP_MD **mdevp;
112 uint8_t *mdord;
113 uint8_t mdmax = DANETLS_MATCHING_LAST;
114 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
115 size_t i;
116
117 if (dctx->mdevp != NULL)
118 return 1;
119
120 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
121 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
122
123 if (mdord == NULL || mdevp == NULL) {
124 OPENSSL_free(mdord);
125 OPENSSL_free(mdevp);
126 return 0;
127 }
128
129 /* Install default entries */
130 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
131 const EVP_MD *md;
132
133 if (dane_mds[i].nid == NID_undef ||
134 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
135 continue;
136 mdevp[dane_mds[i].mtype] = md;
137 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
138 }
139
140 dctx->mdevp = mdevp;
141 dctx->mdord = mdord;
142 dctx->mdmax = mdmax;
143
144 return 1;
145 }
146
dane_ctx_final(struct dane_ctx_st * dctx)147 static void dane_ctx_final(struct dane_ctx_st *dctx)
148 {
149 OPENSSL_free(dctx->mdevp);
150 dctx->mdevp = NULL;
151
152 OPENSSL_free(dctx->mdord);
153 dctx->mdord = NULL;
154 dctx->mdmax = 0;
155 }
156
tlsa_free(danetls_record * t)157 static void tlsa_free(danetls_record *t)
158 {
159 if (t == NULL)
160 return;
161 OPENSSL_free(t->data);
162 EVP_PKEY_free(t->spki);
163 OPENSSL_free(t);
164 }
165
dane_final(SSL_DANE * dane)166 static void dane_final(SSL_DANE *dane)
167 {
168 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
169 dane->trecs = NULL;
170
171 OSSL_STACK_OF_X509_free(dane->certs);
172 dane->certs = NULL;
173
174 X509_free(dane->mcert);
175 dane->mcert = NULL;
176 dane->mtlsa = NULL;
177 dane->mdpth = -1;
178 dane->pdpth = -1;
179 }
180
181 /*
182 * dane_copy - Copy dane configuration, sans verification state.
183 */
ssl_dane_dup(SSL_CONNECTION * to,SSL_CONNECTION * from)184 static int ssl_dane_dup(SSL_CONNECTION *to, SSL_CONNECTION *from)
185 {
186 int num;
187 int i;
188
189 if (!DANETLS_ENABLED(&from->dane))
190 return 1;
191
192 num = sk_danetls_record_num(from->dane.trecs);
193 dane_final(&to->dane);
194 to->dane.flags = from->dane.flags;
195 to->dane.dctx = &SSL_CONNECTION_GET_CTX(to)->dane;
196 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
197
198 if (to->dane.trecs == NULL) {
199 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
200 return 0;
201 }
202
203 for (i = 0; i < num; ++i) {
204 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
205
206 if (SSL_dane_tlsa_add(SSL_CONNECTION_GET_SSL(to), t->usage,
207 t->selector, t->mtype, t->data, t->dlen) <= 0)
208 return 0;
209 }
210 return 1;
211 }
212
dane_mtype_set(struct dane_ctx_st * dctx,const EVP_MD * md,uint8_t mtype,uint8_t ord)213 static int dane_mtype_set(struct dane_ctx_st *dctx,
214 const EVP_MD *md, uint8_t mtype, uint8_t ord)
215 {
216 int i;
217
218 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
219 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
220 return 0;
221 }
222
223 if (mtype > dctx->mdmax) {
224 const EVP_MD **mdevp;
225 uint8_t *mdord;
226 int n = ((int)mtype) + 1;
227
228 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
229 if (mdevp == NULL)
230 return -1;
231 dctx->mdevp = mdevp;
232
233 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
234 if (mdord == NULL)
235 return -1;
236 dctx->mdord = mdord;
237
238 /* Zero-fill any gaps */
239 for (i = dctx->mdmax + 1; i < mtype; ++i) {
240 mdevp[i] = NULL;
241 mdord[i] = 0;
242 }
243
244 dctx->mdmax = mtype;
245 }
246
247 dctx->mdevp[mtype] = md;
248 /* Coerce ordinal of disabled matching types to 0 */
249 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
250
251 return 1;
252 }
253
tlsa_md_get(SSL_DANE * dane,uint8_t mtype)254 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
255 {
256 if (mtype > dane->dctx->mdmax)
257 return NULL;
258 return dane->dctx->mdevp[mtype];
259 }
260
dane_tlsa_add(SSL_DANE * dane,uint8_t usage,uint8_t selector,uint8_t mtype,const unsigned char * data,size_t dlen)261 static int dane_tlsa_add(SSL_DANE *dane,
262 uint8_t usage,
263 uint8_t selector,
264 uint8_t mtype, const unsigned char *data, size_t dlen)
265 {
266 danetls_record *t;
267 const EVP_MD *md = NULL;
268 int ilen = (int)dlen;
269 int i;
270 int num;
271 int mdsize;
272
273 if (dane->trecs == NULL) {
274 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_NOT_ENABLED);
275 return -1;
276 }
277
278 if (ilen < 0 || dlen != (size_t)ilen) {
279 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
280 return 0;
281 }
282
283 if (usage > DANETLS_USAGE_LAST) {
284 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
285 return 0;
286 }
287
288 if (selector > DANETLS_SELECTOR_LAST) {
289 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_SELECTOR);
290 return 0;
291 }
292
293 if (mtype != DANETLS_MATCHING_FULL) {
294 md = tlsa_md_get(dane, mtype);
295 if (md == NULL) {
296 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
297 return 0;
298 }
299 }
300
301 if (md != NULL) {
302 mdsize = EVP_MD_get_size(md);
303 if (mdsize <= 0 || dlen != (size_t)mdsize) {
304 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
305 return 0;
306 }
307 }
308 if (!data) {
309 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_NULL_DATA);
310 return 0;
311 }
312
313 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL)
314 return -1;
315
316 t->usage = usage;
317 t->selector = selector;
318 t->mtype = mtype;
319 t->data = OPENSSL_malloc(dlen);
320 if (t->data == NULL) {
321 tlsa_free(t);
322 return -1;
323 }
324 memcpy(t->data, data, dlen);
325 t->dlen = dlen;
326
327 /* Validate and cache full certificate or public key */
328 if (mtype == DANETLS_MATCHING_FULL) {
329 const unsigned char *p = data;
330 X509 *cert = NULL;
331 EVP_PKEY *pkey = NULL;
332
333 switch (selector) {
334 case DANETLS_SELECTOR_CERT:
335 if (!d2i_X509(&cert, &p, ilen) || p < data ||
336 dlen != (size_t)(p - data)) {
337 X509_free(cert);
338 tlsa_free(t);
339 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
340 return 0;
341 }
342 if (X509_get0_pubkey(cert) == NULL) {
343 X509_free(cert);
344 tlsa_free(t);
345 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
346 return 0;
347 }
348
349 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
350 /*
351 * The Full(0) certificate decodes to a seemingly valid X.509
352 * object with a plausible key, so the TLSA record is well
353 * formed. However, we don't actually need the certificate for
354 * usages PKIX-EE(1) or DANE-EE(3), because at least the EE
355 * certificate is always presented by the peer. We discard the
356 * certificate, and just use the TLSA data as an opaque blob
357 * for matching the raw presented DER octets.
358 *
359 * DO NOT FREE `t` here, it will be added to the TLSA record
360 * list below!
361 */
362 X509_free(cert);
363 break;
364 }
365
366 /*
367 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
368 * records that contain full certificates of trust-anchors that are
369 * not present in the wire chain. For usage PKIX-TA(0), we augment
370 * the chain with untrusted Full(0) certificates from DNS, in case
371 * they are missing from the chain.
372 */
373 if ((dane->certs == NULL &&
374 (dane->certs = sk_X509_new_null()) == NULL) ||
375 !sk_X509_push(dane->certs, cert)) {
376 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
377 X509_free(cert);
378 tlsa_free(t);
379 return -1;
380 }
381 break;
382
383 case DANETLS_SELECTOR_SPKI:
384 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
385 dlen != (size_t)(p - data)) {
386 EVP_PKEY_free(pkey);
387 tlsa_free(t);
388 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
389 return 0;
390 }
391
392 /*
393 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
394 * records that contain full bare keys of trust-anchors that are
395 * not present in the wire chain.
396 */
397 if (usage == DANETLS_USAGE_DANE_TA)
398 t->spki = pkey;
399 else
400 EVP_PKEY_free(pkey);
401 break;
402 }
403 }
404
405 /*-
406 * Find the right insertion point for the new record.
407 *
408 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
409 * they can be processed first, as they require no chain building, and no
410 * expiration or hostname checks. Because DANE-EE(3) is numerically
411 * largest, this is accomplished via descending sort by "usage".
412 *
413 * We also sort in descending order by matching ordinal to simplify
414 * the implementation of digest agility in the verification code.
415 *
416 * The choice of order for the selector is not significant, so we
417 * use the same descending order for consistency.
418 */
419 num = sk_danetls_record_num(dane->trecs);
420 for (i = 0; i < num; ++i) {
421 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
422
423 if (rec->usage > usage)
424 continue;
425 if (rec->usage < usage)
426 break;
427 if (rec->selector > selector)
428 continue;
429 if (rec->selector < selector)
430 break;
431 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
432 continue;
433 break;
434 }
435
436 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
437 tlsa_free(t);
438 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
439 return -1;
440 }
441 dane->umask |= DANETLS_USAGE_BIT(usage);
442
443 return 1;
444 }
445
446 /*
447 * Return 0 if there is only one version configured and it was disabled
448 * at configure time. Return 1 otherwise.
449 */
ssl_check_allowed_versions(int min_version,int max_version)450 static int ssl_check_allowed_versions(int min_version, int max_version)
451 {
452 int minisdtls = 0, maxisdtls = 0;
453
454 /* Figure out if we're doing DTLS versions or TLS versions */
455 if (min_version == DTLS1_BAD_VER
456 || min_version >> 8 == DTLS1_VERSION_MAJOR)
457 minisdtls = 1;
458 if (max_version == DTLS1_BAD_VER
459 || max_version >> 8 == DTLS1_VERSION_MAJOR)
460 maxisdtls = 1;
461 /* A wildcard version of 0 could be DTLS or TLS. */
462 if ((minisdtls && !maxisdtls && max_version != 0)
463 || (maxisdtls && !minisdtls && min_version != 0)) {
464 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
465 return 0;
466 }
467
468 if (minisdtls || maxisdtls) {
469 /* Do DTLS version checks. */
470 if (min_version == 0)
471 /* Ignore DTLS1_BAD_VER */
472 min_version = DTLS1_VERSION;
473 if (max_version == 0)
474 max_version = DTLS1_2_VERSION;
475 #ifdef OPENSSL_NO_DTLS1_2
476 if (max_version == DTLS1_2_VERSION)
477 max_version = DTLS1_VERSION;
478 #endif
479 #ifdef OPENSSL_NO_DTLS1
480 if (min_version == DTLS1_VERSION)
481 min_version = DTLS1_2_VERSION;
482 #endif
483 /* Done massaging versions; do the check. */
484 if (0
485 #ifdef OPENSSL_NO_DTLS1
486 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
487 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
488 #endif
489 #ifdef OPENSSL_NO_DTLS1_2
490 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
491 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
492 #endif
493 )
494 return 0;
495 } else {
496 /* Regular TLS version checks. */
497 if (min_version == 0)
498 min_version = SSL3_VERSION;
499 if (max_version == 0)
500 max_version = TLS1_3_VERSION;
501 #ifdef OPENSSL_NO_TLS1_3
502 if (max_version == TLS1_3_VERSION)
503 max_version = TLS1_2_VERSION;
504 #endif
505 #ifdef OPENSSL_NO_TLS1_2
506 if (max_version == TLS1_2_VERSION)
507 max_version = TLS1_1_VERSION;
508 #endif
509 #ifdef OPENSSL_NO_TLS1_1
510 if (max_version == TLS1_1_VERSION)
511 max_version = TLS1_VERSION;
512 #endif
513 #ifdef OPENSSL_NO_TLS1
514 if (max_version == TLS1_VERSION)
515 max_version = SSL3_VERSION;
516 #endif
517 #ifdef OPENSSL_NO_SSL3
518 if (min_version == SSL3_VERSION)
519 min_version = TLS1_VERSION;
520 #endif
521 #ifdef OPENSSL_NO_TLS1
522 if (min_version == TLS1_VERSION)
523 min_version = TLS1_1_VERSION;
524 #endif
525 #ifdef OPENSSL_NO_TLS1_1
526 if (min_version == TLS1_1_VERSION)
527 min_version = TLS1_2_VERSION;
528 #endif
529 #ifdef OPENSSL_NO_TLS1_2
530 if (min_version == TLS1_2_VERSION)
531 min_version = TLS1_3_VERSION;
532 #endif
533 /* Done massaging versions; do the check. */
534 if (0
535 #ifdef OPENSSL_NO_SSL3
536 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
537 #endif
538 #ifdef OPENSSL_NO_TLS1
539 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
540 #endif
541 #ifdef OPENSSL_NO_TLS1_1
542 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
543 #endif
544 #ifdef OPENSSL_NO_TLS1_2
545 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
546 #endif
547 #ifdef OPENSSL_NO_TLS1_3
548 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
549 #endif
550 )
551 return 0;
552 }
553 return 1;
554 }
555
556 #if defined(__TANDEM) && defined(OPENSSL_VPROC)
557 /*
558 * Define a VPROC function for HP NonStop build ssl library.
559 * This is used by platform version identification tools.
560 * Do not inline this procedure or make it static.
561 */
562 # define OPENSSL_VPROC_STRING_(x) x##_SSL
563 # define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
564 # define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
OPENSSL_VPROC_FUNC(void)565 void OPENSSL_VPROC_FUNC(void) {}
566 #endif
567
SSL_clear(SSL * s)568 int SSL_clear(SSL *s)
569 {
570 if (s->method == NULL) {
571 ERR_raise(ERR_LIB_SSL, SSL_R_NO_METHOD_SPECIFIED);
572 return 0;
573 }
574
575 return s->method->ssl_reset(s);
576 }
577
ossl_ssl_connection_reset(SSL * s)578 int ossl_ssl_connection_reset(SSL *s)
579 {
580 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
581
582 if (sc == NULL)
583 return 0;
584
585 if (ssl_clear_bad_session(sc)) {
586 SSL_SESSION_free(sc->session);
587 sc->session = NULL;
588 }
589 SSL_SESSION_free(sc->psksession);
590 sc->psksession = NULL;
591 OPENSSL_free(sc->psksession_id);
592 sc->psksession_id = NULL;
593 sc->psksession_id_len = 0;
594 sc->hello_retry_request = SSL_HRR_NONE;
595 sc->sent_tickets = 0;
596
597 sc->error = 0;
598 sc->hit = 0;
599 sc->shutdown = 0;
600
601 if (sc->renegotiate) {
602 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
603 return 0;
604 }
605
606 ossl_statem_clear(sc);
607
608 sc->version = s->method->version;
609 sc->client_version = sc->version;
610 sc->rwstate = SSL_NOTHING;
611
612 BUF_MEM_free(sc->init_buf);
613 sc->init_buf = NULL;
614 sc->first_packet = 0;
615
616 sc->key_update = SSL_KEY_UPDATE_NONE;
617 memset(sc->ext.compress_certificate_from_peer, 0,
618 sizeof(sc->ext.compress_certificate_from_peer));
619 sc->ext.compress_certificate_sent = 0;
620
621 EVP_MD_CTX_free(sc->pha_dgst);
622 sc->pha_dgst = NULL;
623
624 /* Reset DANE verification result state */
625 sc->dane.mdpth = -1;
626 sc->dane.pdpth = -1;
627 X509_free(sc->dane.mcert);
628 sc->dane.mcert = NULL;
629 sc->dane.mtlsa = NULL;
630
631 /* Clear the verification result peername */
632 X509_VERIFY_PARAM_move_peername(sc->param, NULL);
633
634 /* Clear any shared connection state */
635 OPENSSL_free(sc->shared_sigalgs);
636 sc->shared_sigalgs = NULL;
637 sc->shared_sigalgslen = 0;
638
639 /*
640 * Check to see if we were changed into a different method, if so, revert
641 * back.
642 */
643 if (s->method != s->defltmeth) {
644 s->method->ssl_deinit(s);
645 s->method = s->defltmeth;
646 if (!s->method->ssl_init(s))
647 return 0;
648 } else {
649 if (!s->method->ssl_clear(s))
650 return 0;
651 }
652
653 if (!RECORD_LAYER_reset(&sc->rlayer))
654 return 0;
655
656 return 1;
657 }
658
659 #ifndef OPENSSL_NO_DEPRECATED_3_0
660 /** Used to change an SSL_CTXs default SSL method type */
SSL_CTX_set_ssl_version(SSL_CTX * ctx,const SSL_METHOD * meth)661 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
662 {
663 STACK_OF(SSL_CIPHER) *sk;
664
665 if (IS_QUIC_CTX(ctx)) {
666 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
667 return 0;
668 }
669
670 ctx->method = meth;
671
672 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
673 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
674 return 0;
675 }
676 sk = ssl_create_cipher_list(ctx,
677 ctx->tls13_ciphersuites,
678 &(ctx->cipher_list),
679 &(ctx->cipher_list_by_id),
680 OSSL_default_cipher_list(), ctx->cert);
681 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
682 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
683 return 0;
684 }
685 return 1;
686 }
687 #endif
688
SSL_new(SSL_CTX * ctx)689 SSL *SSL_new(SSL_CTX *ctx)
690 {
691 if (ctx == NULL) {
692 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
693 return NULL;
694 }
695 if (ctx->method == NULL) {
696 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
697 return NULL;
698 }
699 return ctx->method->ssl_new(ctx);
700 }
701
ossl_ssl_init(SSL * ssl,SSL_CTX * ctx,const SSL_METHOD * method,int type)702 int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, const SSL_METHOD *method, int type)
703 {
704 ssl->type = type;
705
706 ssl->lock = CRYPTO_THREAD_lock_new();
707 if (ssl->lock == NULL)
708 return 0;
709
710 if (!CRYPTO_NEW_REF(&ssl->references, 1)) {
711 CRYPTO_THREAD_lock_free(ssl->lock);
712 return 0;
713 }
714
715 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, ssl, &ssl->ex_data)) {
716 CRYPTO_THREAD_lock_free(ssl->lock);
717 CRYPTO_FREE_REF(&ssl->references);
718 ssl->lock = NULL;
719 return 0;
720 }
721
722 SSL_CTX_up_ref(ctx);
723 ssl->ctx = ctx;
724
725 ssl->defltmeth = ssl->method = method;
726
727 return 1;
728 }
729
ossl_ssl_connection_new_int(SSL_CTX * ctx,const SSL_METHOD * method)730 SSL *ossl_ssl_connection_new_int(SSL_CTX *ctx, const SSL_METHOD *method)
731 {
732 SSL_CONNECTION *s;
733 SSL *ssl;
734
735 s = OPENSSL_zalloc(sizeof(*s));
736 if (s == NULL)
737 return NULL;
738
739 ssl = &s->ssl;
740 if (!ossl_ssl_init(ssl, ctx, method, SSL_TYPE_SSL_CONNECTION)) {
741 OPENSSL_free(s);
742 s = NULL;
743 ssl = NULL;
744 goto sslerr;
745 }
746
747 RECORD_LAYER_init(&s->rlayer, s);
748
749 s->options = ctx->options;
750
751 s->dane.flags = ctx->dane.flags;
752 if (method->version == ctx->method->version) {
753 s->min_proto_version = ctx->min_proto_version;
754 s->max_proto_version = ctx->max_proto_version;
755 }
756
757 s->mode = ctx->mode;
758 s->max_cert_list = ctx->max_cert_list;
759 s->max_early_data = ctx->max_early_data;
760 s->recv_max_early_data = ctx->recv_max_early_data;
761
762 s->num_tickets = ctx->num_tickets;
763 s->pha_enabled = ctx->pha_enabled;
764
765 /* Shallow copy of the ciphersuites stack */
766 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
767 if (s->tls13_ciphersuites == NULL)
768 goto cerr;
769
770 /*
771 * Earlier library versions used to copy the pointer to the CERT, not
772 * its contents; only when setting new parameters for the per-SSL
773 * copy, ssl_cert_new would be called (and the direct reference to
774 * the per-SSL_CTX settings would be lost, but those still were
775 * indirectly accessed for various purposes, and for that reason they
776 * used to be known as s->ctx->default_cert). Now we don't look at the
777 * SSL_CTX's CERT after having duplicated it once.
778 */
779 s->cert = ssl_cert_dup(ctx->cert);
780 if (s->cert == NULL)
781 goto sslerr;
782
783 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
784 s->msg_callback = ctx->msg_callback;
785 s->msg_callback_arg = ctx->msg_callback_arg;
786 s->verify_mode = ctx->verify_mode;
787 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
788 s->rlayer.record_padding_cb = ctx->record_padding_cb;
789 s->rlayer.record_padding_arg = ctx->record_padding_arg;
790 s->rlayer.block_padding = ctx->block_padding;
791 s->rlayer.hs_padding = ctx->hs_padding;
792 s->sid_ctx_length = ctx->sid_ctx_length;
793 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
794 goto err;
795 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
796 s->verify_callback = ctx->default_verify_callback;
797 s->generate_session_id = ctx->generate_session_id;
798
799 s->param = X509_VERIFY_PARAM_new();
800 if (s->param == NULL)
801 goto asn1err;
802 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
803 s->quiet_shutdown = IS_QUIC_CTX(ctx) ? 0 : ctx->quiet_shutdown;
804
805 if (!IS_QUIC_CTX(ctx))
806 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
807
808 s->max_send_fragment = ctx->max_send_fragment;
809 s->split_send_fragment = ctx->split_send_fragment;
810 s->max_pipelines = ctx->max_pipelines;
811 s->rlayer.default_read_buf_len = ctx->default_read_buf_len;
812
813 s->ext.debug_cb = 0;
814 s->ext.debug_arg = NULL;
815 s->ext.ticket_expected = 0;
816 s->ext.status_type = ctx->ext.status_type;
817 s->ext.status_expected = 0;
818 s->ext.ocsp.ids = NULL;
819 s->ext.ocsp.exts = NULL;
820 s->ext.ocsp.resp = NULL;
821 s->ext.ocsp.resp_len = 0;
822 SSL_CTX_up_ref(ctx);
823 s->session_ctx = ctx;
824 if (ctx->ext.ecpointformats) {
825 s->ext.ecpointformats =
826 OPENSSL_memdup(ctx->ext.ecpointformats,
827 ctx->ext.ecpointformats_len);
828 if (!s->ext.ecpointformats) {
829 s->ext.ecpointformats_len = 0;
830 goto err;
831 }
832 s->ext.ecpointformats_len =
833 ctx->ext.ecpointformats_len;
834 }
835 if (ctx->ext.supportedgroups) {
836 s->ext.supportedgroups =
837 OPENSSL_memdup(ctx->ext.supportedgroups,
838 ctx->ext.supportedgroups_len
839 * sizeof(*ctx->ext.supportedgroups));
840 if (!s->ext.supportedgroups) {
841 s->ext.supportedgroups_len = 0;
842 goto err;
843 }
844 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
845 }
846
847 #ifndef OPENSSL_NO_NEXTPROTONEG
848 s->ext.npn = NULL;
849 #endif
850
851 if (ctx->ext.alpn != NULL) {
852 s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
853 if (s->ext.alpn == NULL) {
854 s->ext.alpn_len = 0;
855 goto err;
856 }
857 memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
858 s->ext.alpn_len = ctx->ext.alpn_len;
859 }
860
861 s->verified_chain = NULL;
862 s->verify_result = X509_V_OK;
863
864 s->default_passwd_callback = ctx->default_passwd_callback;
865 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
866
867 s->key_update = SSL_KEY_UPDATE_NONE;
868
869 if (!IS_QUIC_CTX(ctx)) {
870 s->allow_early_data_cb = ctx->allow_early_data_cb;
871 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
872 }
873
874 if (!method->ssl_init(ssl))
875 goto sslerr;
876
877 s->server = (method->ssl_accept == ssl_undefined_function) ? 0 : 1;
878
879 if (!method->ssl_reset(ssl))
880 goto sslerr;
881
882 #ifndef OPENSSL_NO_PSK
883 s->psk_client_callback = ctx->psk_client_callback;
884 s->psk_server_callback = ctx->psk_server_callback;
885 #endif
886 s->psk_find_session_cb = ctx->psk_find_session_cb;
887 s->psk_use_session_cb = ctx->psk_use_session_cb;
888
889 s->async_cb = ctx->async_cb;
890 s->async_cb_arg = ctx->async_cb_arg;
891
892 s->job = NULL;
893
894 #ifndef OPENSSL_NO_COMP_ALG
895 memcpy(s->cert_comp_prefs, ctx->cert_comp_prefs, sizeof(s->cert_comp_prefs));
896 #endif
897 if (ctx->client_cert_type != NULL) {
898 s->client_cert_type = OPENSSL_memdup(ctx->client_cert_type,
899 ctx->client_cert_type_len);
900 if (s->client_cert_type == NULL)
901 goto sslerr;
902 s->client_cert_type_len = ctx->client_cert_type_len;
903 }
904 if (ctx->server_cert_type != NULL) {
905 s->server_cert_type = OPENSSL_memdup(ctx->server_cert_type,
906 ctx->server_cert_type_len);
907 if (s->server_cert_type == NULL)
908 goto sslerr;
909 s->server_cert_type_len = ctx->server_cert_type_len;
910 }
911
912 #ifndef OPENSSL_NO_CT
913 if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
914 ctx->ct_validation_callback_arg))
915 goto sslerr;
916 #endif
917
918 s->ssl_pkey_num = SSL_PKEY_NUM + ctx->sigalg_list_len;
919 return ssl;
920 cerr:
921 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
922 goto err;
923 asn1err:
924 ERR_raise(ERR_LIB_SSL, ERR_R_ASN1_LIB);
925 goto err;
926 sslerr:
927 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
928 err:
929 SSL_free(ssl);
930 return NULL;
931 }
932
ossl_ssl_connection_new(SSL_CTX * ctx)933 SSL *ossl_ssl_connection_new(SSL_CTX *ctx)
934 {
935 return ossl_ssl_connection_new_int(ctx, ctx->method);
936 }
937
SSL_is_dtls(const SSL * s)938 int SSL_is_dtls(const SSL *s)
939 {
940 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
941
942 #ifndef OPENSSL_NO_QUIC
943 if (s->type == SSL_TYPE_QUIC_CONNECTION || s->type == SSL_TYPE_QUIC_XSO)
944 return 0;
945 #endif
946
947 if (sc == NULL)
948 return 0;
949
950 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
951 }
952
SSL_is_tls(const SSL * s)953 int SSL_is_tls(const SSL *s)
954 {
955 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
956
957 #ifndef OPENSSL_NO_QUIC
958 if (s->type == SSL_TYPE_QUIC_CONNECTION || s->type == SSL_TYPE_QUIC_XSO)
959 return 0;
960 #endif
961
962 if (sc == NULL)
963 return 0;
964
965 return SSL_CONNECTION_IS_DTLS(sc) ? 0 : 1;
966 }
967
SSL_is_quic(const SSL * s)968 int SSL_is_quic(const SSL *s)
969 {
970 #ifndef OPENSSL_NO_QUIC
971 if (s->type == SSL_TYPE_QUIC_CONNECTION || s->type == SSL_TYPE_QUIC_XSO)
972 return 1;
973 #endif
974 return 0;
975 }
976
SSL_up_ref(SSL * s)977 int SSL_up_ref(SSL *s)
978 {
979 int i;
980
981 if (CRYPTO_UP_REF(&s->references, &i) <= 0)
982 return 0;
983
984 REF_PRINT_COUNT("SSL", s);
985 REF_ASSERT_ISNT(i < 2);
986 return ((i > 1) ? 1 : 0);
987 }
988
SSL_CTX_set_session_id_context(SSL_CTX * ctx,const unsigned char * sid_ctx,unsigned int sid_ctx_len)989 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
990 unsigned int sid_ctx_len)
991 {
992 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
993 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
994 return 0;
995 }
996 ctx->sid_ctx_length = sid_ctx_len;
997 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
998
999 return 1;
1000 }
1001
SSL_set_session_id_context(SSL * ssl,const unsigned char * sid_ctx,unsigned int sid_ctx_len)1002 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
1003 unsigned int sid_ctx_len)
1004 {
1005 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1006
1007 if (sc == NULL)
1008 return 0;
1009
1010 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
1011 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
1012 return 0;
1013 }
1014 sc->sid_ctx_length = sid_ctx_len;
1015 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
1016
1017 return 1;
1018 }
1019
SSL_CTX_set_generate_session_id(SSL_CTX * ctx,GEN_SESSION_CB cb)1020 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
1021 {
1022 if (!CRYPTO_THREAD_write_lock(ctx->lock))
1023 return 0;
1024 ctx->generate_session_id = cb;
1025 CRYPTO_THREAD_unlock(ctx->lock);
1026 return 1;
1027 }
1028
SSL_set_generate_session_id(SSL * ssl,GEN_SESSION_CB cb)1029 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
1030 {
1031 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1032
1033 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
1034 return 0;
1035 sc->generate_session_id = cb;
1036 CRYPTO_THREAD_unlock(ssl->lock);
1037 return 1;
1038 }
1039
SSL_has_matching_session_id(const SSL * ssl,const unsigned char * id,unsigned int id_len)1040 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
1041 unsigned int id_len)
1042 {
1043 /*
1044 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
1045 * we can "construct" a session to give us the desired check - i.e. to
1046 * find if there's a session in the hash table that would conflict with
1047 * any new session built out of this id/id_len and the ssl_version in use
1048 * by this SSL.
1049 */
1050 SSL_SESSION r, *p;
1051 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
1052
1053 if (sc == NULL || id_len > sizeof(r.session_id))
1054 return 0;
1055
1056 r.ssl_version = sc->version;
1057 r.session_id_length = id_len;
1058 memcpy(r.session_id, id, id_len);
1059
1060 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
1061 return 0;
1062 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1063 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
1064 return (p != NULL);
1065 }
1066
SSL_CTX_set_purpose(SSL_CTX * s,int purpose)1067 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
1068 {
1069 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1070 }
1071
SSL_set_purpose(SSL * s,int purpose)1072 int SSL_set_purpose(SSL *s, int purpose)
1073 {
1074 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1075
1076 if (sc == NULL)
1077 return 0;
1078
1079 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
1080 }
1081
SSL_CTX_set_trust(SSL_CTX * s,int trust)1082 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
1083 {
1084 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1085 }
1086
SSL_set_trust(SSL * s,int trust)1087 int SSL_set_trust(SSL *s, int trust)
1088 {
1089 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1090
1091 if (sc == NULL)
1092 return 0;
1093
1094 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
1095 }
1096
SSL_set1_host(SSL * s,const char * hostname)1097 int SSL_set1_host(SSL *s, const char *hostname)
1098 {
1099 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1100
1101 if (sc == NULL)
1102 return 0;
1103
1104 /* If a hostname is provided and parses as an IP address,
1105 * treat it as such. */
1106 if (hostname != NULL
1107 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
1108 return 1;
1109
1110 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
1111 }
1112
SSL_add1_host(SSL * s,const char * hostname)1113 int SSL_add1_host(SSL *s, const char *hostname)
1114 {
1115 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1116
1117 if (sc == NULL)
1118 return 0;
1119
1120 /* If a hostname is provided and parses as an IP address,
1121 * treat it as such. */
1122 if (hostname) {
1123 ASN1_OCTET_STRING *ip;
1124 char *old_ip;
1125
1126 ip = a2i_IPADDRESS(hostname);
1127 if (ip) {
1128 /* We didn't want it; only to check if it *is* an IP address */
1129 ASN1_OCTET_STRING_free(ip);
1130
1131 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
1132 if (old_ip) {
1133 OPENSSL_free(old_ip);
1134 /* There can be only one IP address */
1135 return 0;
1136 }
1137
1138 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
1139 }
1140 }
1141
1142 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
1143 }
1144
SSL_set_hostflags(SSL * s,unsigned int flags)1145 void SSL_set_hostflags(SSL *s, unsigned int flags)
1146 {
1147 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1148
1149 if (sc == NULL)
1150 return;
1151
1152 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
1153 }
1154
SSL_get0_peername(SSL * s)1155 const char *SSL_get0_peername(SSL *s)
1156 {
1157 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1158
1159 if (sc == NULL)
1160 return NULL;
1161
1162 return X509_VERIFY_PARAM_get0_peername(sc->param);
1163 }
1164
SSL_CTX_dane_enable(SSL_CTX * ctx)1165 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1166 {
1167 return dane_ctx_enable(&ctx->dane);
1168 }
1169
SSL_CTX_dane_set_flags(SSL_CTX * ctx,unsigned long flags)1170 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1171 {
1172 unsigned long orig = ctx->dane.flags;
1173
1174 ctx->dane.flags |= flags;
1175 return orig;
1176 }
1177
SSL_CTX_dane_clear_flags(SSL_CTX * ctx,unsigned long flags)1178 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1179 {
1180 unsigned long orig = ctx->dane.flags;
1181
1182 ctx->dane.flags &= ~flags;
1183 return orig;
1184 }
1185
SSL_dane_enable(SSL * s,const char * basedomain)1186 int SSL_dane_enable(SSL *s, const char *basedomain)
1187 {
1188 SSL_DANE *dane;
1189 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1190
1191 if (sc == NULL)
1192 return 0;
1193
1194 dane = &sc->dane;
1195 if (s->ctx->dane.mdmax == 0) {
1196 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1197 return 0;
1198 }
1199 if (dane->trecs != NULL) {
1200 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1201 return 0;
1202 }
1203
1204 /*
1205 * Default SNI name. This rejects empty names, while set1_host below
1206 * accepts them and disables hostname checks. To avoid side-effects with
1207 * invalid input, set the SNI name first.
1208 */
1209 if (sc->ext.hostname == NULL) {
1210 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1211 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1212 return -1;
1213 }
1214 }
1215
1216 /* Primary RFC6125 reference identifier */
1217 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
1218 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1219 return -1;
1220 }
1221
1222 dane->mdpth = -1;
1223 dane->pdpth = -1;
1224 dane->dctx = &s->ctx->dane;
1225 dane->trecs = sk_danetls_record_new_null();
1226
1227 if (dane->trecs == NULL) {
1228 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
1229 return -1;
1230 }
1231 return 1;
1232 }
1233
SSL_dane_set_flags(SSL * ssl,unsigned long flags)1234 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1235 {
1236 unsigned long orig;
1237 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1238
1239 if (sc == NULL)
1240 return 0;
1241
1242 orig = sc->dane.flags;
1243
1244 sc->dane.flags |= flags;
1245 return orig;
1246 }
1247
SSL_dane_clear_flags(SSL * ssl,unsigned long flags)1248 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1249 {
1250 unsigned long orig;
1251 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1252
1253 if (sc == NULL)
1254 return 0;
1255
1256 orig = sc->dane.flags;
1257
1258 sc->dane.flags &= ~flags;
1259 return orig;
1260 }
1261
SSL_get0_dane_authority(SSL * s,X509 ** mcert,EVP_PKEY ** mspki)1262 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1263 {
1264 SSL_DANE *dane;
1265 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1266
1267 if (sc == NULL)
1268 return -1;
1269
1270 dane = &sc->dane;
1271
1272 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1273 return -1;
1274 if (dane->mtlsa) {
1275 if (mcert)
1276 *mcert = dane->mcert;
1277 if (mspki)
1278 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1279 }
1280 return dane->mdpth;
1281 }
1282
SSL_get0_dane_tlsa(SSL * s,uint8_t * usage,uint8_t * selector,uint8_t * mtype,const unsigned char ** data,size_t * dlen)1283 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1284 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1285 {
1286 SSL_DANE *dane;
1287 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1288
1289 if (sc == NULL)
1290 return -1;
1291
1292 dane = &sc->dane;
1293
1294 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1295 return -1;
1296 if (dane->mtlsa) {
1297 if (usage)
1298 *usage = dane->mtlsa->usage;
1299 if (selector)
1300 *selector = dane->mtlsa->selector;
1301 if (mtype)
1302 *mtype = dane->mtlsa->mtype;
1303 if (data)
1304 *data = dane->mtlsa->data;
1305 if (dlen)
1306 *dlen = dane->mtlsa->dlen;
1307 }
1308 return dane->mdpth;
1309 }
1310
SSL_get0_dane(SSL * s)1311 SSL_DANE *SSL_get0_dane(SSL *s)
1312 {
1313 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1314
1315 if (sc == NULL)
1316 return NULL;
1317
1318 return &sc->dane;
1319 }
1320
SSL_dane_tlsa_add(SSL * s,uint8_t usage,uint8_t selector,uint8_t mtype,const unsigned char * data,size_t dlen)1321 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1322 uint8_t mtype, const unsigned char *data, size_t dlen)
1323 {
1324 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1325
1326 if (sc == NULL)
1327 return 0;
1328
1329 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
1330 }
1331
SSL_CTX_dane_mtype_set(SSL_CTX * ctx,const EVP_MD * md,uint8_t mtype,uint8_t ord)1332 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1333 uint8_t ord)
1334 {
1335 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1336 }
1337
SSL_CTX_set1_param(SSL_CTX * ctx,X509_VERIFY_PARAM * vpm)1338 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1339 {
1340 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1341 }
1342
SSL_set1_param(SSL * ssl,X509_VERIFY_PARAM * vpm)1343 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1344 {
1345 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1346
1347 if (sc == NULL)
1348 return 0;
1349
1350 return X509_VERIFY_PARAM_set1(sc->param, vpm);
1351 }
1352
SSL_CTX_get0_param(SSL_CTX * ctx)1353 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1354 {
1355 return ctx->param;
1356 }
1357
SSL_get0_param(SSL * ssl)1358 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1359 {
1360 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1361
1362 if (sc == NULL)
1363 return NULL;
1364
1365 return sc->param;
1366 }
1367
SSL_certs_clear(SSL * s)1368 void SSL_certs_clear(SSL *s)
1369 {
1370 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1371
1372 if (sc == NULL)
1373 return;
1374
1375 ssl_cert_clear_certs(sc->cert);
1376 }
1377
SSL_free(SSL * s)1378 void SSL_free(SSL *s)
1379 {
1380 int i;
1381
1382 if (s == NULL)
1383 return;
1384 CRYPTO_DOWN_REF(&s->references, &i);
1385 REF_PRINT_COUNT("SSL", s);
1386 if (i > 0)
1387 return;
1388 REF_ASSERT_ISNT(i < 0);
1389
1390 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1391
1392 if (s->method != NULL)
1393 s->method->ssl_free(s);
1394
1395 SSL_CTX_free(s->ctx);
1396 CRYPTO_THREAD_lock_free(s->lock);
1397 CRYPTO_FREE_REF(&s->references);
1398
1399 OPENSSL_free(s);
1400 }
1401
ossl_ssl_connection_free(SSL * ssl)1402 void ossl_ssl_connection_free(SSL *ssl)
1403 {
1404 SSL_CONNECTION *s;
1405
1406 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1407 if (s == NULL)
1408 return;
1409
1410 X509_VERIFY_PARAM_free(s->param);
1411 dane_final(&s->dane);
1412
1413 /* Ignore return value */
1414 ssl_free_wbio_buffer(s);
1415
1416 /* Ignore return value */
1417 RECORD_LAYER_clear(&s->rlayer);
1418
1419 BUF_MEM_free(s->init_buf);
1420
1421 /* add extra stuff */
1422 sk_SSL_CIPHER_free(s->cipher_list);
1423 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1424 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1425 sk_SSL_CIPHER_free(s->peer_ciphers);
1426
1427 /* Make the next call work :-) */
1428 if (s->session != NULL) {
1429 ssl_clear_bad_session(s);
1430 SSL_SESSION_free(s->session);
1431 }
1432 SSL_SESSION_free(s->psksession);
1433 OPENSSL_free(s->psksession_id);
1434
1435 ssl_cert_free(s->cert);
1436 OPENSSL_free(s->shared_sigalgs);
1437 /* Free up if allocated */
1438
1439 OPENSSL_free(s->ext.hostname);
1440 SSL_CTX_free(s->session_ctx);
1441 OPENSSL_free(s->ext.ecpointformats);
1442 OPENSSL_free(s->ext.peer_ecpointformats);
1443 OPENSSL_free(s->ext.supportedgroups);
1444 OPENSSL_free(s->ext.peer_supportedgroups);
1445 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1446 #ifndef OPENSSL_NO_OCSP
1447 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1448 #endif
1449 #ifndef OPENSSL_NO_CT
1450 SCT_LIST_free(s->scts);
1451 OPENSSL_free(s->ext.scts);
1452 #endif
1453 OPENSSL_free(s->ext.ocsp.resp);
1454 OPENSSL_free(s->ext.alpn);
1455 OPENSSL_free(s->ext.tls13_cookie);
1456 if (s->clienthello != NULL)
1457 OPENSSL_free(s->clienthello->pre_proc_exts);
1458 OPENSSL_free(s->clienthello);
1459 OPENSSL_free(s->pha_context);
1460 EVP_MD_CTX_free(s->pha_dgst);
1461
1462 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1463 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1464
1465 OPENSSL_free(s->client_cert_type);
1466 OPENSSL_free(s->server_cert_type);
1467
1468 OSSL_STACK_OF_X509_free(s->verified_chain);
1469
1470 if (ssl->method != NULL)
1471 ssl->method->ssl_deinit(ssl);
1472
1473 ASYNC_WAIT_CTX_free(s->waitctx);
1474
1475 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1476 OPENSSL_free(s->ext.npn);
1477 #endif
1478
1479 #ifndef OPENSSL_NO_SRTP
1480 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1481 #endif
1482
1483 /*
1484 * We do this late. We want to ensure that any other references we held to
1485 * these BIOs are freed first *before* we call BIO_free_all(), because
1486 * BIO_free_all() will only free each BIO in the chain if the number of
1487 * references to the first BIO have dropped to 0
1488 */
1489 BIO_free_all(s->wbio);
1490 s->wbio = NULL;
1491 BIO_free_all(s->rbio);
1492 s->rbio = NULL;
1493 OPENSSL_free(s->s3.tmp.valid_flags);
1494 }
1495
SSL_set0_rbio(SSL * s,BIO * rbio)1496 void SSL_set0_rbio(SSL *s, BIO *rbio)
1497 {
1498 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1499
1500 #ifndef OPENSSL_NO_QUIC
1501 if (IS_QUIC(s)) {
1502 ossl_quic_conn_set0_net_rbio(s, rbio);
1503 return;
1504 }
1505 #endif
1506
1507 if (sc == NULL)
1508 return;
1509
1510 BIO_free_all(sc->rbio);
1511 sc->rbio = rbio;
1512 sc->rlayer.rrlmethod->set1_bio(sc->rlayer.rrl, sc->rbio);
1513 }
1514
SSL_set0_wbio(SSL * s,BIO * wbio)1515 void SSL_set0_wbio(SSL *s, BIO *wbio)
1516 {
1517 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1518
1519 #ifndef OPENSSL_NO_QUIC
1520 if (IS_QUIC(s)) {
1521 ossl_quic_conn_set0_net_wbio(s, wbio);
1522 return;
1523 }
1524 #endif
1525
1526 if (sc == NULL)
1527 return;
1528
1529 /*
1530 * If the output buffering BIO is still in place, remove it
1531 */
1532 if (sc->bbio != NULL)
1533 sc->wbio = BIO_pop(sc->wbio);
1534
1535 BIO_free_all(sc->wbio);
1536 sc->wbio = wbio;
1537
1538 /* Re-attach |bbio| to the new |wbio|. */
1539 if (sc->bbio != NULL)
1540 sc->wbio = BIO_push(sc->bbio, sc->wbio);
1541
1542 sc->rlayer.wrlmethod->set1_bio(sc->rlayer.wrl, sc->wbio);
1543 }
1544
SSL_set_bio(SSL * s,BIO * rbio,BIO * wbio)1545 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1546 {
1547 /*
1548 * For historical reasons, this function has many different cases in
1549 * ownership handling.
1550 */
1551
1552 /* If nothing has changed, do nothing */
1553 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1554 return;
1555
1556 /*
1557 * If the two arguments are equal then one fewer reference is granted by the
1558 * caller than we want to take
1559 */
1560 if (rbio != NULL && rbio == wbio)
1561 BIO_up_ref(rbio);
1562
1563 /*
1564 * If only the wbio is changed only adopt one reference.
1565 */
1566 if (rbio == SSL_get_rbio(s)) {
1567 SSL_set0_wbio(s, wbio);
1568 return;
1569 }
1570 /*
1571 * There is an asymmetry here for historical reasons. If only the rbio is
1572 * changed AND the rbio and wbio were originally different, then we only
1573 * adopt one reference.
1574 */
1575 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1576 SSL_set0_rbio(s, rbio);
1577 return;
1578 }
1579
1580 /* Otherwise, adopt both references. */
1581 SSL_set0_rbio(s, rbio);
1582 SSL_set0_wbio(s, wbio);
1583 }
1584
SSL_get_rbio(const SSL * s)1585 BIO *SSL_get_rbio(const SSL *s)
1586 {
1587 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1588
1589 #ifndef OPENSSL_NO_QUIC
1590 if (IS_QUIC(s))
1591 return ossl_quic_conn_get_net_rbio(s);
1592 #endif
1593
1594 if (sc == NULL)
1595 return NULL;
1596
1597 return sc->rbio;
1598 }
1599
SSL_get_wbio(const SSL * s)1600 BIO *SSL_get_wbio(const SSL *s)
1601 {
1602 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1603
1604 #ifndef OPENSSL_NO_QUIC
1605 if (IS_QUIC(s))
1606 return ossl_quic_conn_get_net_wbio(s);
1607 #endif
1608
1609 if (sc == NULL)
1610 return NULL;
1611
1612 if (sc->bbio != NULL) {
1613 /*
1614 * If |bbio| is active, the true caller-configured BIO is its
1615 * |next_bio|.
1616 */
1617 return BIO_next(sc->bbio);
1618 }
1619 return sc->wbio;
1620 }
1621
SSL_get_fd(const SSL * s)1622 int SSL_get_fd(const SSL *s)
1623 {
1624 return SSL_get_rfd(s);
1625 }
1626
SSL_get_rfd(const SSL * s)1627 int SSL_get_rfd(const SSL *s)
1628 {
1629 int ret = -1;
1630 BIO *b, *r;
1631
1632 b = SSL_get_rbio(s);
1633 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1634 if (r != NULL)
1635 BIO_get_fd(r, &ret);
1636 return ret;
1637 }
1638
SSL_get_wfd(const SSL * s)1639 int SSL_get_wfd(const SSL *s)
1640 {
1641 int ret = -1;
1642 BIO *b, *r;
1643
1644 b = SSL_get_wbio(s);
1645 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1646 if (r != NULL)
1647 BIO_get_fd(r, &ret);
1648 return ret;
1649 }
1650
1651 #ifndef OPENSSL_NO_SOCK
fd_method(SSL * s)1652 static const BIO_METHOD *fd_method(SSL *s)
1653 {
1654 #ifndef OPENSSL_NO_DGRAM
1655 if (IS_QUIC(s))
1656 return BIO_s_datagram();
1657 #endif
1658
1659 return BIO_s_socket();
1660 }
1661
SSL_set_fd(SSL * s,int fd)1662 int SSL_set_fd(SSL *s, int fd)
1663 {
1664 int ret = 0;
1665 BIO *bio = NULL;
1666
1667 if (s->type == SSL_TYPE_QUIC_XSO) {
1668 ERR_raise(ERR_LIB_SSL, SSL_R_CONN_USE_ONLY);
1669 goto err;
1670 }
1671
1672 bio = BIO_new(fd_method(s));
1673
1674 if (bio == NULL) {
1675 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1676 goto err;
1677 }
1678 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1679 SSL_set_bio(s, bio, bio);
1680 #ifndef OPENSSL_NO_KTLS
1681 /*
1682 * The new socket is created successfully regardless of ktls_enable.
1683 * ktls_enable doesn't change any functionality of the socket, except
1684 * changing the setsockopt to enable the processing of ktls_start.
1685 * Thus, it is not a problem to call it for non-TLS sockets.
1686 */
1687 ktls_enable(fd);
1688 #endif /* OPENSSL_NO_KTLS */
1689 ret = 1;
1690 err:
1691 return ret;
1692 }
1693
SSL_set_wfd(SSL * s,int fd)1694 int SSL_set_wfd(SSL *s, int fd)
1695 {
1696 BIO *rbio = SSL_get_rbio(s);
1697 int desired_type = IS_QUIC(s) ? BIO_TYPE_DGRAM : BIO_TYPE_SOCKET;
1698
1699 if (s->type == SSL_TYPE_QUIC_XSO) {
1700 ERR_raise(ERR_LIB_SSL, SSL_R_CONN_USE_ONLY);
1701 return 0;
1702 }
1703
1704 if (rbio == NULL || BIO_method_type(rbio) != desired_type
1705 || (int)BIO_get_fd(rbio, NULL) != fd) {
1706 BIO *bio = BIO_new(fd_method(s));
1707
1708 if (bio == NULL) {
1709 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1710 return 0;
1711 }
1712 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1713 SSL_set0_wbio(s, bio);
1714 #ifndef OPENSSL_NO_KTLS
1715 /*
1716 * The new socket is created successfully regardless of ktls_enable.
1717 * ktls_enable doesn't change any functionality of the socket, except
1718 * changing the setsockopt to enable the processing of ktls_start.
1719 * Thus, it is not a problem to call it for non-TLS sockets.
1720 */
1721 ktls_enable(fd);
1722 #endif /* OPENSSL_NO_KTLS */
1723 } else {
1724 BIO_up_ref(rbio);
1725 SSL_set0_wbio(s, rbio);
1726 }
1727 return 1;
1728 }
1729
SSL_set_rfd(SSL * s,int fd)1730 int SSL_set_rfd(SSL *s, int fd)
1731 {
1732 BIO *wbio = SSL_get_wbio(s);
1733 int desired_type = IS_QUIC(s) ? BIO_TYPE_DGRAM : BIO_TYPE_SOCKET;
1734
1735 if (s->type == SSL_TYPE_QUIC_XSO) {
1736 ERR_raise(ERR_LIB_SSL, SSL_R_CONN_USE_ONLY);
1737 return 0;
1738 }
1739
1740 if (wbio == NULL || BIO_method_type(wbio) != desired_type
1741 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1742 BIO *bio = BIO_new(fd_method(s));
1743
1744 if (bio == NULL) {
1745 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1746 return 0;
1747 }
1748 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1749 SSL_set0_rbio(s, bio);
1750 } else {
1751 BIO_up_ref(wbio);
1752 SSL_set0_rbio(s, wbio);
1753 }
1754
1755 return 1;
1756 }
1757 #endif
1758
1759 /* return length of latest Finished message we sent, copy to 'buf' */
SSL_get_finished(const SSL * s,void * buf,size_t count)1760 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1761 {
1762 size_t ret = 0;
1763 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1764
1765 if (sc == NULL)
1766 return 0;
1767
1768 ret = sc->s3.tmp.finish_md_len;
1769 if (count > ret)
1770 count = ret;
1771 memcpy(buf, sc->s3.tmp.finish_md, count);
1772 return ret;
1773 }
1774
1775 /* return length of latest Finished message we expected, copy to 'buf' */
SSL_get_peer_finished(const SSL * s,void * buf,size_t count)1776 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1777 {
1778 size_t ret = 0;
1779 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1780
1781 if (sc == NULL)
1782 return 0;
1783
1784 ret = sc->s3.tmp.peer_finish_md_len;
1785 if (count > ret)
1786 count = ret;
1787 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1788 return ret;
1789 }
1790
SSL_get_verify_mode(const SSL * s)1791 int SSL_get_verify_mode(const SSL *s)
1792 {
1793 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1794
1795 if (sc == NULL)
1796 return 0;
1797
1798 return sc->verify_mode;
1799 }
1800
SSL_get_verify_depth(const SSL * s)1801 int SSL_get_verify_depth(const SSL *s)
1802 {
1803 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1804
1805 if (sc == NULL)
1806 return 0;
1807
1808 return X509_VERIFY_PARAM_get_depth(sc->param);
1809 }
1810
SSL_get_verify_callback(const SSL * s)1811 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1812 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1813
1814 if (sc == NULL)
1815 return NULL;
1816
1817 return sc->verify_callback;
1818 }
1819
SSL_CTX_get_verify_mode(const SSL_CTX * ctx)1820 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1821 {
1822 return ctx->verify_mode;
1823 }
1824
SSL_CTX_get_verify_depth(const SSL_CTX * ctx)1825 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1826 {
1827 return X509_VERIFY_PARAM_get_depth(ctx->param);
1828 }
1829
SSL_CTX_get_verify_callback(const SSL_CTX * ctx)1830 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1831 return ctx->default_verify_callback;
1832 }
1833
SSL_set_verify(SSL * s,int mode,int (* callback)(int ok,X509_STORE_CTX * ctx))1834 void SSL_set_verify(SSL *s, int mode,
1835 int (*callback) (int ok, X509_STORE_CTX *ctx))
1836 {
1837 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1838
1839 if (sc == NULL)
1840 return;
1841
1842 sc->verify_mode = mode;
1843 if (callback != NULL)
1844 sc->verify_callback = callback;
1845 }
1846
SSL_set_verify_depth(SSL * s,int depth)1847 void SSL_set_verify_depth(SSL *s, int depth)
1848 {
1849 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1850
1851 if (sc == NULL)
1852 return;
1853
1854 X509_VERIFY_PARAM_set_depth(sc->param, depth);
1855 }
1856
SSL_set_read_ahead(SSL * s,int yes)1857 void SSL_set_read_ahead(SSL *s, int yes)
1858 {
1859 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
1860 OSSL_PARAM options[2], *opts = options;
1861
1862 if (sc == NULL)
1863 return;
1864
1865 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1866
1867 *opts++ = OSSL_PARAM_construct_int(OSSL_LIBSSL_RECORD_LAYER_PARAM_READ_AHEAD,
1868 &sc->rlayer.read_ahead);
1869 *opts = OSSL_PARAM_construct_end();
1870
1871 /* Ignore return value */
1872 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
1873 }
1874
SSL_get_read_ahead(const SSL * s)1875 int SSL_get_read_ahead(const SSL *s)
1876 {
1877 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
1878
1879 if (sc == NULL)
1880 return 0;
1881
1882 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1883 }
1884
SSL_pending(const SSL * s)1885 int SSL_pending(const SSL *s)
1886 {
1887 size_t pending = s->method->ssl_pending(s);
1888
1889 /*
1890 * SSL_pending cannot work properly if read-ahead is enabled
1891 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1892 * impossible to fix since SSL_pending cannot report errors that may be
1893 * observed while scanning the new data. (Note that SSL_pending() is
1894 * often used as a boolean value, so we'd better not return -1.)
1895 *
1896 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1897 * we just return INT_MAX.
1898 */
1899 return pending < INT_MAX ? (int)pending : INT_MAX;
1900 }
1901
SSL_has_pending(const SSL * s)1902 int SSL_has_pending(const SSL *s)
1903 {
1904 /*
1905 * Similar to SSL_pending() but returns a 1 to indicate that we have
1906 * processed or unprocessed data available or 0 otherwise (as opposed to the
1907 * number of bytes available). Unlike SSL_pending() this will take into
1908 * account read_ahead data. A 1 return simply indicates that we have data.
1909 * That data may not result in any application data, or we may fail to parse
1910 * the records for some reason.
1911 */
1912 const SSL_CONNECTION *sc;
1913
1914 #ifndef OPENSSL_NO_QUIC
1915 if (IS_QUIC(s))
1916 return ossl_quic_has_pending(s);
1917 #endif
1918
1919 sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1920
1921 /* Check buffered app data if any first */
1922 if (SSL_CONNECTION_IS_DTLS(sc)) {
1923 TLS_RECORD *rdata;
1924 pitem *item, *iter;
1925
1926 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data);
1927 while ((item = pqueue_next(&iter)) != NULL) {
1928 rdata = item->data;
1929 if (rdata->length > 0)
1930 return 1;
1931 }
1932 }
1933
1934 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1935 return 1;
1936
1937 return RECORD_LAYER_read_pending(&sc->rlayer);
1938 }
1939
SSL_get1_peer_certificate(const SSL * s)1940 X509 *SSL_get1_peer_certificate(const SSL *s)
1941 {
1942 X509 *r = SSL_get0_peer_certificate(s);
1943
1944 if (r != NULL)
1945 X509_up_ref(r);
1946
1947 return r;
1948 }
1949
SSL_get0_peer_certificate(const SSL * s)1950 X509 *SSL_get0_peer_certificate(const SSL *s)
1951 {
1952 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1953
1954 if (sc == NULL)
1955 return NULL;
1956
1957 if (sc->session == NULL)
1958 return NULL;
1959 else
1960 return sc->session->peer;
1961 }
1962
STACK_OF(X509)1963 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1964 {
1965 STACK_OF(X509) *r;
1966 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1967
1968 if (sc == NULL)
1969 return NULL;
1970
1971 if (sc->session == NULL)
1972 r = NULL;
1973 else
1974 r = sc->session->peer_chain;
1975
1976 /*
1977 * If we are a client, cert_chain includes the peer's own certificate; if
1978 * we are a server, it does not.
1979 */
1980
1981 return r;
1982 }
1983
1984 /*
1985 * Now in theory, since the calling process own 't' it should be safe to
1986 * modify. We need to be able to read f without being hassled
1987 */
SSL_copy_session_id(SSL * t,const SSL * f)1988 int SSL_copy_session_id(SSL *t, const SSL *f)
1989 {
1990 int i;
1991 /* TODO(QUIC FUTURE): Not allowed for QUIC currently. */
1992 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1993 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1994
1995 if (tsc == NULL || fsc == NULL)
1996 return 0;
1997
1998 /* Do we need to do SSL locking? */
1999 if (!SSL_set_session(t, SSL_get_session(f))) {
2000 return 0;
2001 }
2002
2003 /*
2004 * what if we are setup for one protocol version but want to talk another
2005 */
2006 if (t->method != f->method) {
2007 t->method->ssl_deinit(t);
2008 t->method = f->method;
2009 if (t->method->ssl_init(t) == 0)
2010 return 0;
2011 }
2012
2013 CRYPTO_UP_REF(&fsc->cert->references, &i);
2014 ssl_cert_free(tsc->cert);
2015 tsc->cert = fsc->cert;
2016 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
2017 return 0;
2018 }
2019
2020 return 1;
2021 }
2022
2023 /* Fix this so it checks all the valid key/cert options */
SSL_CTX_check_private_key(const SSL_CTX * ctx)2024 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
2025 {
2026 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
2027 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
2028 return 0;
2029 }
2030 if (ctx->cert->key->privatekey == NULL) {
2031 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
2032 return 0;
2033 }
2034 return X509_check_private_key
2035 (ctx->cert->key->x509, ctx->cert->key->privatekey);
2036 }
2037
2038 /* Fix this function so that it takes an optional type parameter */
SSL_check_private_key(const SSL * ssl)2039 int SSL_check_private_key(const SSL *ssl)
2040 {
2041 const SSL_CONNECTION *sc;
2042
2043 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
2044 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
2045 return 0;
2046 }
2047 if (sc->cert->key->x509 == NULL) {
2048 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
2049 return 0;
2050 }
2051 if (sc->cert->key->privatekey == NULL) {
2052 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
2053 return 0;
2054 }
2055 return X509_check_private_key(sc->cert->key->x509,
2056 sc->cert->key->privatekey);
2057 }
2058
SSL_waiting_for_async(SSL * s)2059 int SSL_waiting_for_async(SSL *s)
2060 {
2061 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2062
2063 if (sc == NULL)
2064 return 0;
2065
2066 if (sc->job)
2067 return 1;
2068
2069 return 0;
2070 }
2071
SSL_get_all_async_fds(SSL * s,OSSL_ASYNC_FD * fds,size_t * numfds)2072 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
2073 {
2074 ASYNC_WAIT_CTX *ctx;
2075 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2076
2077 if (sc == NULL)
2078 return 0;
2079
2080 if ((ctx = sc->waitctx) == NULL)
2081 return 0;
2082 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
2083 }
2084
SSL_get_changed_async_fds(SSL * s,OSSL_ASYNC_FD * addfd,size_t * numaddfds,OSSL_ASYNC_FD * delfd,size_t * numdelfds)2085 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
2086 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
2087 {
2088 ASYNC_WAIT_CTX *ctx;
2089 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2090
2091 if (sc == NULL)
2092 return 0;
2093
2094 if ((ctx = sc->waitctx) == NULL)
2095 return 0;
2096 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
2097 numdelfds);
2098 }
2099
SSL_CTX_set_async_callback(SSL_CTX * ctx,SSL_async_callback_fn callback)2100 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
2101 {
2102 ctx->async_cb = callback;
2103 return 1;
2104 }
2105
SSL_CTX_set_async_callback_arg(SSL_CTX * ctx,void * arg)2106 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
2107 {
2108 ctx->async_cb_arg = arg;
2109 return 1;
2110 }
2111
SSL_set_async_callback(SSL * s,SSL_async_callback_fn callback)2112 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
2113 {
2114 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2115
2116 if (sc == NULL)
2117 return 0;
2118
2119 sc->async_cb = callback;
2120 return 1;
2121 }
2122
SSL_set_async_callback_arg(SSL * s,void * arg)2123 int SSL_set_async_callback_arg(SSL *s, void *arg)
2124 {
2125 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2126
2127 if (sc == NULL)
2128 return 0;
2129
2130 sc->async_cb_arg = arg;
2131 return 1;
2132 }
2133
SSL_get_async_status(SSL * s,int * status)2134 int SSL_get_async_status(SSL *s, int *status)
2135 {
2136 ASYNC_WAIT_CTX *ctx;
2137 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2138
2139 if (sc == NULL)
2140 return 0;
2141
2142 if ((ctx = sc->waitctx) == NULL)
2143 return 0;
2144 *status = ASYNC_WAIT_CTX_get_status(ctx);
2145 return 1;
2146 }
2147
SSL_accept(SSL * s)2148 int SSL_accept(SSL *s)
2149 {
2150 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2151
2152 #ifndef OPENSSL_NO_QUIC
2153 if (IS_QUIC(s))
2154 return s->method->ssl_accept(s);
2155 #endif
2156
2157 if (sc == NULL)
2158 return 0;
2159
2160 if (sc->handshake_func == NULL) {
2161 /* Not properly initialized yet */
2162 SSL_set_accept_state(s);
2163 }
2164
2165 return SSL_do_handshake(s);
2166 }
2167
SSL_connect(SSL * s)2168 int SSL_connect(SSL *s)
2169 {
2170 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2171
2172 #ifndef OPENSSL_NO_QUIC
2173 if (IS_QUIC(s))
2174 return s->method->ssl_connect(s);
2175 #endif
2176
2177 if (sc == NULL)
2178 return 0;
2179
2180 if (sc->handshake_func == NULL) {
2181 /* Not properly initialized yet */
2182 SSL_set_connect_state(s);
2183 }
2184
2185 return SSL_do_handshake(s);
2186 }
2187
SSL_get_default_timeout(const SSL * s)2188 long SSL_get_default_timeout(const SSL *s)
2189 {
2190 return (long int)ossl_time2seconds(s->method->get_timeout());
2191 }
2192
ssl_async_wait_ctx_cb(void * arg)2193 static int ssl_async_wait_ctx_cb(void *arg)
2194 {
2195 SSL *s = (SSL *)arg;
2196 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2197
2198 if (sc == NULL)
2199 return 0;
2200
2201 return sc->async_cb(s, sc->async_cb_arg);
2202 }
2203
ssl_start_async_job(SSL * s,struct ssl_async_args * args,int (* func)(void *))2204 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
2205 int (*func) (void *))
2206 {
2207 int ret;
2208 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2209
2210 if (sc == NULL)
2211 return 0;
2212
2213 if (sc->waitctx == NULL) {
2214 sc->waitctx = ASYNC_WAIT_CTX_new();
2215 if (sc->waitctx == NULL)
2216 return -1;
2217 if (sc->async_cb != NULL
2218 && !ASYNC_WAIT_CTX_set_callback
2219 (sc->waitctx, ssl_async_wait_ctx_cb, s))
2220 return -1;
2221 }
2222
2223 sc->rwstate = SSL_NOTHING;
2224 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2225 sizeof(struct ssl_async_args))) {
2226 case ASYNC_ERR:
2227 sc->rwstate = SSL_NOTHING;
2228 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2229 return -1;
2230 case ASYNC_PAUSE:
2231 sc->rwstate = SSL_ASYNC_PAUSED;
2232 return -1;
2233 case ASYNC_NO_JOBS:
2234 sc->rwstate = SSL_ASYNC_NO_JOBS;
2235 return -1;
2236 case ASYNC_FINISH:
2237 sc->job = NULL;
2238 return ret;
2239 default:
2240 sc->rwstate = SSL_NOTHING;
2241 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2242 /* Shouldn't happen */
2243 return -1;
2244 }
2245 }
2246
ssl_io_intern(void * vargs)2247 static int ssl_io_intern(void *vargs)
2248 {
2249 struct ssl_async_args *args;
2250 SSL *s;
2251 void *buf;
2252 size_t num;
2253 SSL_CONNECTION *sc;
2254
2255 args = (struct ssl_async_args *)vargs;
2256 s = args->s;
2257 buf = args->buf;
2258 num = args->num;
2259 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2260 return -1;
2261
2262 switch (args->type) {
2263 case READFUNC:
2264 return args->f.func_read(s, buf, num, &sc->asyncrw);
2265 case WRITEFUNC:
2266 return args->f.func_write(s, buf, num, &sc->asyncrw);
2267 case OTHERFUNC:
2268 return args->f.func_other(s);
2269 }
2270 return -1;
2271 }
2272
ssl_read_internal(SSL * s,void * buf,size_t num,size_t * readbytes)2273 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2274 {
2275 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2276
2277 #ifndef OPENSSL_NO_QUIC
2278 if (IS_QUIC(s))
2279 return s->method->ssl_read(s, buf, num, readbytes);
2280 #endif
2281
2282 if (sc == NULL)
2283 return -1;
2284
2285 if (sc->handshake_func == NULL) {
2286 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2287 return -1;
2288 }
2289
2290 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2291 sc->rwstate = SSL_NOTHING;
2292 return 0;
2293 }
2294
2295 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2296 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2297 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2298 return 0;
2299 }
2300 /*
2301 * If we are a client and haven't received the ServerHello etc then we
2302 * better do that
2303 */
2304 ossl_statem_check_finish_init(sc, 0);
2305
2306 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2307 struct ssl_async_args args;
2308 int ret;
2309
2310 args.s = s;
2311 args.buf = buf;
2312 args.num = num;
2313 args.type = READFUNC;
2314 args.f.func_read = s->method->ssl_read;
2315
2316 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2317 *readbytes = sc->asyncrw;
2318 return ret;
2319 } else {
2320 return s->method->ssl_read(s, buf, num, readbytes);
2321 }
2322 }
2323
SSL_read(SSL * s,void * buf,int num)2324 int SSL_read(SSL *s, void *buf, int num)
2325 {
2326 int ret;
2327 size_t readbytes;
2328
2329 if (num < 0) {
2330 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2331 return -1;
2332 }
2333
2334 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2335
2336 /*
2337 * The cast is safe here because ret should be <= INT_MAX because num is
2338 * <= INT_MAX
2339 */
2340 if (ret > 0)
2341 ret = (int)readbytes;
2342
2343 return ret;
2344 }
2345
SSL_read_ex(SSL * s,void * buf,size_t num,size_t * readbytes)2346 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2347 {
2348 int ret = ssl_read_internal(s, buf, num, readbytes);
2349
2350 if (ret < 0)
2351 ret = 0;
2352 return ret;
2353 }
2354
SSL_read_early_data(SSL * s,void * buf,size_t num,size_t * readbytes)2355 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
2356 {
2357 int ret;
2358 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2359
2360 /* TODO(QUIC 0RTT): 0-RTT support */
2361 if (sc == NULL || !sc->server) {
2362 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2363 return SSL_READ_EARLY_DATA_ERROR;
2364 }
2365
2366 switch (sc->early_data_state) {
2367 case SSL_EARLY_DATA_NONE:
2368 if (!SSL_in_before(s)) {
2369 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2370 return SSL_READ_EARLY_DATA_ERROR;
2371 }
2372 /* fall through */
2373
2374 case SSL_EARLY_DATA_ACCEPT_RETRY:
2375 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2376 ret = SSL_accept(s);
2377 if (ret <= 0) {
2378 /* NBIO or error */
2379 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2380 return SSL_READ_EARLY_DATA_ERROR;
2381 }
2382 /* fall through */
2383
2384 case SSL_EARLY_DATA_READ_RETRY:
2385 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2386 sc->early_data_state = SSL_EARLY_DATA_READING;
2387 ret = SSL_read_ex(s, buf, num, readbytes);
2388 /*
2389 * State machine will update early_data_state to
2390 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2391 * message
2392 */
2393 if (ret > 0 || (ret <= 0 && sc->early_data_state
2394 != SSL_EARLY_DATA_FINISHED_READING)) {
2395 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2396 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2397 : SSL_READ_EARLY_DATA_ERROR;
2398 }
2399 } else {
2400 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2401 }
2402 *readbytes = 0;
2403 return SSL_READ_EARLY_DATA_FINISH;
2404
2405 default:
2406 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2407 return SSL_READ_EARLY_DATA_ERROR;
2408 }
2409 }
2410
SSL_get_early_data_status(const SSL * s)2411 int SSL_get_early_data_status(const SSL *s)
2412 {
2413 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2414
2415 /* TODO(QUIC 0RTT): 0-RTT support */
2416 if (sc == NULL)
2417 return 0;
2418
2419 return sc->ext.early_data;
2420 }
2421
ssl_peek_internal(SSL * s,void * buf,size_t num,size_t * readbytes)2422 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2423 {
2424 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2425
2426 #ifndef OPENSSL_NO_QUIC
2427 if (IS_QUIC(s))
2428 return s->method->ssl_peek(s, buf, num, readbytes);
2429 #endif
2430
2431 if (sc == NULL)
2432 return 0;
2433
2434 if (sc->handshake_func == NULL) {
2435 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2436 return -1;
2437 }
2438
2439 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2440 return 0;
2441 }
2442 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2443 struct ssl_async_args args;
2444 int ret;
2445
2446 args.s = s;
2447 args.buf = buf;
2448 args.num = num;
2449 args.type = READFUNC;
2450 args.f.func_read = s->method->ssl_peek;
2451
2452 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2453 *readbytes = sc->asyncrw;
2454 return ret;
2455 } else {
2456 return s->method->ssl_peek(s, buf, num, readbytes);
2457 }
2458 }
2459
SSL_peek(SSL * s,void * buf,int num)2460 int SSL_peek(SSL *s, void *buf, int num)
2461 {
2462 int ret;
2463 size_t readbytes;
2464
2465 if (num < 0) {
2466 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2467 return -1;
2468 }
2469
2470 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2471
2472 /*
2473 * The cast is safe here because ret should be <= INT_MAX because num is
2474 * <= INT_MAX
2475 */
2476 if (ret > 0)
2477 ret = (int)readbytes;
2478
2479 return ret;
2480 }
2481
2482
SSL_peek_ex(SSL * s,void * buf,size_t num,size_t * readbytes)2483 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2484 {
2485 int ret = ssl_peek_internal(s, buf, num, readbytes);
2486
2487 if (ret < 0)
2488 ret = 0;
2489 return ret;
2490 }
2491
ssl_write_internal(SSL * s,const void * buf,size_t num,uint64_t flags,size_t * written)2492 int ssl_write_internal(SSL *s, const void *buf, size_t num,
2493 uint64_t flags, size_t *written)
2494 {
2495 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2496
2497 #ifndef OPENSSL_NO_QUIC
2498 if (IS_QUIC(s))
2499 return ossl_quic_write_flags(s, buf, num, flags, written);
2500 #endif
2501
2502 if (sc == NULL)
2503 return 0;
2504
2505 if (sc->handshake_func == NULL) {
2506 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2507 return -1;
2508 }
2509
2510 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2511 sc->rwstate = SSL_NOTHING;
2512 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2513 return -1;
2514 }
2515
2516 if (flags != 0) {
2517 ERR_raise(ERR_LIB_SSL, SSL_R_UNSUPPORTED_WRITE_FLAG);
2518 return -1;
2519 }
2520
2521 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2522 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2523 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2524 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2525 return 0;
2526 }
2527 /* If we are a client and haven't sent the Finished we better do that */
2528 ossl_statem_check_finish_init(sc, 1);
2529
2530 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2531 int ret;
2532 struct ssl_async_args args;
2533
2534 args.s = s;
2535 args.buf = (void *)buf;
2536 args.num = num;
2537 args.type = WRITEFUNC;
2538 args.f.func_write = s->method->ssl_write;
2539
2540 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2541 *written = sc->asyncrw;
2542 return ret;
2543 } else {
2544 return s->method->ssl_write(s, buf, num, written);
2545 }
2546 }
2547
SSL_sendfile(SSL * s,int fd,off_t offset,size_t size,int flags)2548 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2549 {
2550 ossl_ssize_t ret;
2551 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2552
2553 if (sc == NULL)
2554 return 0;
2555
2556 if (sc->handshake_func == NULL) {
2557 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2558 return -1;
2559 }
2560
2561 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2562 sc->rwstate = SSL_NOTHING;
2563 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2564 return -1;
2565 }
2566
2567 if (!BIO_get_ktls_send(sc->wbio)) {
2568 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2569 return -1;
2570 }
2571
2572 /* If we have an alert to send, lets send it */
2573 if (sc->s3.alert_dispatch > 0) {
2574 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2575 if (ret <= 0) {
2576 /* SSLfatal() already called if appropriate */
2577 return ret;
2578 }
2579 /* if it went, fall through and send more stuff */
2580 }
2581
2582 sc->rwstate = SSL_WRITING;
2583 if (BIO_flush(sc->wbio) <= 0) {
2584 if (!BIO_should_retry(sc->wbio)) {
2585 sc->rwstate = SSL_NOTHING;
2586 } else {
2587 #ifdef EAGAIN
2588 set_sys_error(EAGAIN);
2589 #endif
2590 }
2591 return -1;
2592 }
2593
2594 #ifdef OPENSSL_NO_KTLS
2595 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2596 "can't call ktls_sendfile(), ktls disabled");
2597 return -1;
2598 #else
2599 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2600 if (ret < 0) {
2601 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2602 if ((get_last_sys_error() == EAGAIN) ||
2603 (get_last_sys_error() == EINTR) ||
2604 (get_last_sys_error() == EBUSY))
2605 BIO_set_retry_write(sc->wbio);
2606 else
2607 #endif
2608 ERR_raise_data(ERR_LIB_SYS, get_last_sys_error(),
2609 "ktls_sendfile failure");
2610 return ret;
2611 }
2612 sc->rwstate = SSL_NOTHING;
2613 return ret;
2614 #endif
2615 }
2616
SSL_write(SSL * s,const void * buf,int num)2617 int SSL_write(SSL *s, const void *buf, int num)
2618 {
2619 int ret;
2620 size_t written;
2621
2622 if (num < 0) {
2623 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2624 return -1;
2625 }
2626
2627 ret = ssl_write_internal(s, buf, (size_t)num, 0, &written);
2628
2629 /*
2630 * The cast is safe here because ret should be <= INT_MAX because num is
2631 * <= INT_MAX
2632 */
2633 if (ret > 0)
2634 ret = (int)written;
2635
2636 return ret;
2637 }
2638
SSL_write_ex(SSL * s,const void * buf,size_t num,size_t * written)2639 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2640 {
2641 return SSL_write_ex2(s, buf, num, 0, written);
2642 }
2643
SSL_write_ex2(SSL * s,const void * buf,size_t num,uint64_t flags,size_t * written)2644 int SSL_write_ex2(SSL *s, const void *buf, size_t num, uint64_t flags,
2645 size_t *written)
2646 {
2647 int ret = ssl_write_internal(s, buf, num, flags, written);
2648
2649 if (ret < 0)
2650 ret = 0;
2651 return ret;
2652 }
2653
SSL_write_early_data(SSL * s,const void * buf,size_t num,size_t * written)2654 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2655 {
2656 int ret, early_data_state;
2657 size_t writtmp;
2658 uint32_t partialwrite;
2659 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2660
2661 /* TODO(QUIC 0RTT): This will need special handling for QUIC */
2662 if (sc == NULL)
2663 return 0;
2664
2665 switch (sc->early_data_state) {
2666 case SSL_EARLY_DATA_NONE:
2667 if (sc->server
2668 || !SSL_in_before(s)
2669 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2670 && (sc->psk_use_session_cb == NULL))) {
2671 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2672 return 0;
2673 }
2674 /* fall through */
2675
2676 case SSL_EARLY_DATA_CONNECT_RETRY:
2677 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2678 ret = SSL_connect(s);
2679 if (ret <= 0) {
2680 /* NBIO or error */
2681 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2682 return 0;
2683 }
2684 /* fall through */
2685
2686 case SSL_EARLY_DATA_WRITE_RETRY:
2687 sc->early_data_state = SSL_EARLY_DATA_WRITING;
2688 /*
2689 * We disable partial write for early data because we don't keep track
2690 * of how many bytes we've written between the SSL_write_ex() call and
2691 * the flush if the flush needs to be retried)
2692 */
2693 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2694 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2695 ret = SSL_write_ex(s, buf, num, &writtmp);
2696 sc->mode |= partialwrite;
2697 if (!ret) {
2698 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2699 return ret;
2700 }
2701 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2702 /* fall through */
2703
2704 case SSL_EARLY_DATA_WRITE_FLUSH:
2705 /* The buffering BIO is still in place so we need to flush it */
2706 if (statem_flush(sc) != 1)
2707 return 0;
2708 *written = num;
2709 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2710 return 1;
2711
2712 case SSL_EARLY_DATA_FINISHED_READING:
2713 case SSL_EARLY_DATA_READ_RETRY:
2714 early_data_state = sc->early_data_state;
2715 /* We are a server writing to an unauthenticated client */
2716 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2717 ret = SSL_write_ex(s, buf, num, written);
2718 /* The buffering BIO is still in place */
2719 if (ret)
2720 (void)BIO_flush(sc->wbio);
2721 sc->early_data_state = early_data_state;
2722 return ret;
2723
2724 default:
2725 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2726 return 0;
2727 }
2728 }
2729
SSL_shutdown(SSL * s)2730 int SSL_shutdown(SSL *s)
2731 {
2732 /*
2733 * Note that this function behaves differently from what one might
2734 * expect. Return values are 0 for no success (yet), 1 for success; but
2735 * calling it once is usually not enough, even if blocking I/O is used
2736 * (see ssl3_shutdown).
2737 */
2738 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2739
2740 #ifndef OPENSSL_NO_QUIC
2741 if (IS_QUIC(s))
2742 return ossl_quic_conn_shutdown(s, 0, NULL, 0);
2743 #endif
2744
2745 if (sc == NULL)
2746 return -1;
2747
2748 if (sc->handshake_func == NULL) {
2749 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2750 return -1;
2751 }
2752
2753 if (!SSL_in_init(s)) {
2754 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2755 struct ssl_async_args args;
2756
2757 memset(&args, 0, sizeof(args));
2758 args.s = s;
2759 args.type = OTHERFUNC;
2760 args.f.func_other = s->method->ssl_shutdown;
2761
2762 return ssl_start_async_job(s, &args, ssl_io_intern);
2763 } else {
2764 return s->method->ssl_shutdown(s);
2765 }
2766 } else {
2767 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2768 return -1;
2769 }
2770 }
2771
SSL_key_update(SSL * s,int updatetype)2772 int SSL_key_update(SSL *s, int updatetype)
2773 {
2774 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2775
2776 #ifndef OPENSSL_NO_QUIC
2777 if (IS_QUIC(s))
2778 return ossl_quic_key_update(s, updatetype);
2779 #endif
2780
2781 if (sc == NULL)
2782 return 0;
2783
2784 if (!SSL_CONNECTION_IS_TLS13(sc)) {
2785 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2786 return 0;
2787 }
2788
2789 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2790 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2791 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2792 return 0;
2793 }
2794
2795 if (!SSL_is_init_finished(s)) {
2796 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2797 return 0;
2798 }
2799
2800 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2801 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2802 return 0;
2803 }
2804
2805 ossl_statem_set_in_init(sc, 1);
2806 sc->key_update = updatetype;
2807 return 1;
2808 }
2809
SSL_get_key_update_type(const SSL * s)2810 int SSL_get_key_update_type(const SSL *s)
2811 {
2812 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2813
2814 #ifndef OPENSSL_NO_QUIC
2815 if (IS_QUIC(s))
2816 return ossl_quic_get_key_update_type(s);
2817 #endif
2818
2819 if (sc == NULL)
2820 return 0;
2821
2822 return sc->key_update;
2823 }
2824
2825 /*
2826 * Can we accept a renegotiation request? If yes, set the flag and
2827 * return 1 if yes. If not, raise error and return 0.
2828 */
can_renegotiate(const SSL_CONNECTION * sc)2829 static int can_renegotiate(const SSL_CONNECTION *sc)
2830 {
2831 if (SSL_CONNECTION_IS_TLS13(sc)) {
2832 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2833 return 0;
2834 }
2835
2836 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2837 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2838 return 0;
2839 }
2840
2841 return 1;
2842 }
2843
SSL_renegotiate(SSL * s)2844 int SSL_renegotiate(SSL *s)
2845 {
2846 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2847
2848 if (sc == NULL)
2849 return 0;
2850
2851 if (!can_renegotiate(sc))
2852 return 0;
2853
2854 sc->renegotiate = 1;
2855 sc->new_session = 1;
2856 return s->method->ssl_renegotiate(s);
2857 }
2858
SSL_renegotiate_abbreviated(SSL * s)2859 int SSL_renegotiate_abbreviated(SSL *s)
2860 {
2861 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2862
2863 if (sc == NULL)
2864 return 0;
2865
2866 if (!can_renegotiate(sc))
2867 return 0;
2868
2869 sc->renegotiate = 1;
2870 sc->new_session = 0;
2871 return s->method->ssl_renegotiate(s);
2872 }
2873
SSL_renegotiate_pending(const SSL * s)2874 int SSL_renegotiate_pending(const SSL *s)
2875 {
2876 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2877
2878 if (sc == NULL)
2879 return 0;
2880
2881 /*
2882 * becomes true when negotiation is requested; false again once a
2883 * handshake has finished
2884 */
2885 return (sc->renegotiate != 0);
2886 }
2887
SSL_new_session_ticket(SSL * s)2888 int SSL_new_session_ticket(SSL *s)
2889 {
2890 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2891
2892 if (sc == NULL)
2893 return 0;
2894
2895 /* If we are in init because we're sending tickets, okay to send more. */
2896 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2897 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2898 || !SSL_CONNECTION_IS_TLS13(sc))
2899 return 0;
2900 sc->ext.extra_tickets_expected++;
2901 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2902 ossl_statem_set_in_init(sc, 1);
2903 return 1;
2904 }
2905
SSL_ctrl(SSL * s,int cmd,long larg,void * parg)2906 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2907 {
2908 return ossl_ctrl_internal(s, cmd, larg, parg, /*no_quic=*/0);
2909 }
2910
ossl_ctrl_internal(SSL * s,int cmd,long larg,void * parg,int no_quic)2911 long ossl_ctrl_internal(SSL *s, int cmd, long larg, void *parg, int no_quic)
2912 {
2913 long l;
2914 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2915
2916 /*
2917 * Routing of ctrl calls for QUIC is a little counterintuitive:
2918 *
2919 * - Firstly (no_quic=0), we pass the ctrl directly to our QUIC
2920 * implementation in case it wants to handle the ctrl specially.
2921 *
2922 * - If our QUIC implementation does not care about the ctrl, it
2923 * will reenter this function with no_quic=1 and we will try to handle
2924 * it directly using the QCSO SSL object stub (not the handshake layer
2925 * SSL object). This is important for e.g. the version configuration
2926 * ctrls below, which must use s->defltmeth (and not sc->defltmeth).
2927 *
2928 * - If we don't handle a ctrl here specially, then processing is
2929 * redirected to the handshake layer SSL object.
2930 */
2931 if (!no_quic && IS_QUIC(s))
2932 return s->method->ssl_ctrl(s, cmd, larg, parg);
2933
2934 if (sc == NULL)
2935 return 0;
2936
2937 switch (cmd) {
2938 case SSL_CTRL_GET_READ_AHEAD:
2939 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2940 case SSL_CTRL_SET_READ_AHEAD:
2941 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2942 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2943 return l;
2944
2945 case SSL_CTRL_MODE:
2946 {
2947 OSSL_PARAM options[2], *opts = options;
2948
2949 sc->mode |= larg;
2950
2951 *opts++ = OSSL_PARAM_construct_uint32(OSSL_LIBSSL_RECORD_LAYER_PARAM_MODE,
2952 &sc->mode);
2953 *opts = OSSL_PARAM_construct_end();
2954
2955 /* Ignore return value */
2956 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
2957
2958 return sc->mode;
2959 }
2960 case SSL_CTRL_CLEAR_MODE:
2961 return (sc->mode &= ~larg);
2962 case SSL_CTRL_GET_MAX_CERT_LIST:
2963 return (long)sc->max_cert_list;
2964 case SSL_CTRL_SET_MAX_CERT_LIST:
2965 if (larg < 0)
2966 return 0;
2967 l = (long)sc->max_cert_list;
2968 sc->max_cert_list = (size_t)larg;
2969 return l;
2970 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2971 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2972 return 0;
2973 #ifndef OPENSSL_NO_KTLS
2974 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2975 return 0;
2976 #endif /* OPENSSL_NO_KTLS */
2977 sc->max_send_fragment = larg;
2978 if (sc->max_send_fragment < sc->split_send_fragment)
2979 sc->split_send_fragment = sc->max_send_fragment;
2980 sc->rlayer.wrlmethod->set_max_frag_len(sc->rlayer.wrl, larg);
2981 return 1;
2982 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2983 if ((size_t)larg > sc->max_send_fragment || larg == 0)
2984 return 0;
2985 sc->split_send_fragment = larg;
2986 return 1;
2987 case SSL_CTRL_SET_MAX_PIPELINES:
2988 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2989 return 0;
2990 sc->max_pipelines = larg;
2991 if (sc->rlayer.rrlmethod->set_max_pipelines != NULL)
2992 sc->rlayer.rrlmethod->set_max_pipelines(sc->rlayer.rrl, (size_t)larg);
2993 return 1;
2994 case SSL_CTRL_GET_RI_SUPPORT:
2995 return sc->s3.send_connection_binding;
2996 case SSL_CTRL_SET_RETRY_VERIFY:
2997 sc->rwstate = SSL_RETRY_VERIFY;
2998 return 1;
2999 case SSL_CTRL_CERT_FLAGS:
3000 return (sc->cert->cert_flags |= larg);
3001 case SSL_CTRL_CLEAR_CERT_FLAGS:
3002 return (sc->cert->cert_flags &= ~larg);
3003
3004 case SSL_CTRL_GET_RAW_CIPHERLIST:
3005 if (parg) {
3006 if (sc->s3.tmp.ciphers_raw == NULL)
3007 return 0;
3008 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
3009 return (int)sc->s3.tmp.ciphers_rawlen;
3010 } else {
3011 return TLS_CIPHER_LEN;
3012 }
3013 case SSL_CTRL_GET_EXTMS_SUPPORT:
3014 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
3015 return -1;
3016 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
3017 return 1;
3018 else
3019 return 0;
3020 case SSL_CTRL_SET_MIN_PROTO_VERSION:
3021 return ssl_check_allowed_versions(larg, sc->max_proto_version)
3022 && ssl_set_version_bound(s->defltmeth->version, (int)larg,
3023 &sc->min_proto_version);
3024 case SSL_CTRL_GET_MIN_PROTO_VERSION:
3025 return sc->min_proto_version;
3026 case SSL_CTRL_SET_MAX_PROTO_VERSION:
3027 return ssl_check_allowed_versions(sc->min_proto_version, larg)
3028 && ssl_set_version_bound(s->defltmeth->version, (int)larg,
3029 &sc->max_proto_version);
3030 case SSL_CTRL_GET_MAX_PROTO_VERSION:
3031 return sc->max_proto_version;
3032 default:
3033 if (IS_QUIC(s))
3034 return SSL_ctrl((SSL *)sc, cmd, larg, parg);
3035 else
3036 return s->method->ssl_ctrl(s, cmd, larg, parg);
3037 }
3038 }
3039
SSL_callback_ctrl(SSL * s,int cmd,void (* fp)(void))3040 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
3041 {
3042 return s->method->ssl_callback_ctrl(s, cmd, fp);
3043 }
3044
LHASH_OF(SSL_SESSION)3045 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
3046 {
3047 return ctx->sessions;
3048 }
3049
ssl_tsan_load(SSL_CTX * ctx,TSAN_QUALIFIER int * stat)3050 static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
3051 {
3052 int res = 0;
3053
3054 if (ssl_tsan_lock(ctx)) {
3055 res = tsan_load(stat);
3056 ssl_tsan_unlock(ctx);
3057 }
3058 return res;
3059 }
3060
SSL_CTX_ctrl(SSL_CTX * ctx,int cmd,long larg,void * parg)3061 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
3062 {
3063 long l;
3064 /* For some cases with ctx == NULL perform syntax checks */
3065 if (ctx == NULL) {
3066 switch (cmd) {
3067 case SSL_CTRL_SET_GROUPS_LIST:
3068 return tls1_set_groups_list(ctx, NULL, NULL, parg);
3069 case SSL_CTRL_SET_SIGALGS_LIST:
3070 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
3071 return tls1_set_sigalgs_list(ctx, NULL, parg, 0);
3072 default:
3073 return 0;
3074 }
3075 }
3076
3077 switch (cmd) {
3078 case SSL_CTRL_GET_READ_AHEAD:
3079 return ctx->read_ahead;
3080 case SSL_CTRL_SET_READ_AHEAD:
3081 l = ctx->read_ahead;
3082 ctx->read_ahead = larg;
3083 return l;
3084
3085 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
3086 ctx->msg_callback_arg = parg;
3087 return 1;
3088
3089 case SSL_CTRL_GET_MAX_CERT_LIST:
3090 return (long)ctx->max_cert_list;
3091 case SSL_CTRL_SET_MAX_CERT_LIST:
3092 if (larg < 0)
3093 return 0;
3094 l = (long)ctx->max_cert_list;
3095 ctx->max_cert_list = (size_t)larg;
3096 return l;
3097
3098 case SSL_CTRL_SET_SESS_CACHE_SIZE:
3099 if (larg < 0)
3100 return 0;
3101 l = (long)ctx->session_cache_size;
3102 ctx->session_cache_size = (size_t)larg;
3103 return l;
3104 case SSL_CTRL_GET_SESS_CACHE_SIZE:
3105 return (long)ctx->session_cache_size;
3106 case SSL_CTRL_SET_SESS_CACHE_MODE:
3107 l = ctx->session_cache_mode;
3108 ctx->session_cache_mode = larg;
3109 return l;
3110 case SSL_CTRL_GET_SESS_CACHE_MODE:
3111 return ctx->session_cache_mode;
3112
3113 case SSL_CTRL_SESS_NUMBER:
3114 return lh_SSL_SESSION_num_items(ctx->sessions);
3115 case SSL_CTRL_SESS_CONNECT:
3116 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
3117 case SSL_CTRL_SESS_CONNECT_GOOD:
3118 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
3119 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
3120 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
3121 case SSL_CTRL_SESS_ACCEPT:
3122 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
3123 case SSL_CTRL_SESS_ACCEPT_GOOD:
3124 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
3125 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
3126 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
3127 case SSL_CTRL_SESS_HIT:
3128 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
3129 case SSL_CTRL_SESS_CB_HIT:
3130 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
3131 case SSL_CTRL_SESS_MISSES:
3132 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
3133 case SSL_CTRL_SESS_TIMEOUTS:
3134 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
3135 case SSL_CTRL_SESS_CACHE_FULL:
3136 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
3137 case SSL_CTRL_MODE:
3138 return (ctx->mode |= larg);
3139 case SSL_CTRL_CLEAR_MODE:
3140 return (ctx->mode &= ~larg);
3141 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
3142 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
3143 return 0;
3144 ctx->max_send_fragment = larg;
3145 if (ctx->max_send_fragment < ctx->split_send_fragment)
3146 ctx->split_send_fragment = ctx->max_send_fragment;
3147 return 1;
3148 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
3149 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
3150 return 0;
3151 ctx->split_send_fragment = larg;
3152 return 1;
3153 case SSL_CTRL_SET_MAX_PIPELINES:
3154 if (larg < 1 || larg > SSL_MAX_PIPELINES)
3155 return 0;
3156 ctx->max_pipelines = larg;
3157 return 1;
3158 case SSL_CTRL_CERT_FLAGS:
3159 return (ctx->cert->cert_flags |= larg);
3160 case SSL_CTRL_CLEAR_CERT_FLAGS:
3161 return (ctx->cert->cert_flags &= ~larg);
3162 case SSL_CTRL_SET_MIN_PROTO_VERSION:
3163 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
3164 && ssl_set_version_bound(ctx->method->version, (int)larg,
3165 &ctx->min_proto_version);
3166 case SSL_CTRL_GET_MIN_PROTO_VERSION:
3167 return ctx->min_proto_version;
3168 case SSL_CTRL_SET_MAX_PROTO_VERSION:
3169 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
3170 && ssl_set_version_bound(ctx->method->version, (int)larg,
3171 &ctx->max_proto_version);
3172 case SSL_CTRL_GET_MAX_PROTO_VERSION:
3173 return ctx->max_proto_version;
3174 default:
3175 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
3176 }
3177 }
3178
SSL_CTX_callback_ctrl(SSL_CTX * ctx,int cmd,void (* fp)(void))3179 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
3180 {
3181 switch (cmd) {
3182 case SSL_CTRL_SET_MSG_CALLBACK:
3183 ctx->msg_callback = (void (*)
3184 (int write_p, int version, int content_type,
3185 const void *buf, size_t len, SSL *ssl,
3186 void *arg))(fp);
3187 return 1;
3188
3189 default:
3190 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
3191 }
3192 }
3193
ssl_cipher_id_cmp(const SSL_CIPHER * a,const SSL_CIPHER * b)3194 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
3195 {
3196 if (a->id > b->id)
3197 return 1;
3198 if (a->id < b->id)
3199 return -1;
3200 return 0;
3201 }
3202
ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const * ap,const SSL_CIPHER * const * bp)3203 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
3204 const SSL_CIPHER *const *bp)
3205 {
3206 if ((*ap)->id > (*bp)->id)
3207 return 1;
3208 if ((*ap)->id < (*bp)->id)
3209 return -1;
3210 return 0;
3211 }
3212
3213 /*
3214 * return a STACK of the ciphers available for the SSL and in order of
3215 * preference
3216 */
STACK_OF(SSL_CIPHER)3217 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
3218 {
3219 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3220
3221 if (sc != NULL) {
3222 if (sc->cipher_list != NULL) {
3223 return sc->cipher_list;
3224 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3225 return s->ctx->cipher_list;
3226 }
3227 }
3228 return NULL;
3229 }
3230
STACK_OF(SSL_CIPHER)3231 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3232 {
3233 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3234
3235 if (sc == NULL || !sc->server)
3236 return NULL;
3237 return sc->peer_ciphers;
3238 }
3239
STACK_OF(SSL_CIPHER)3240 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
3241 {
3242 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3243 int i;
3244 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3245
3246 if (sc == NULL)
3247 return NULL;
3248
3249 ciphers = SSL_get_ciphers(s);
3250 if (!ciphers)
3251 return NULL;
3252 if (!ssl_set_client_disabled(sc))
3253 return NULL;
3254 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3255 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3256 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3257 if (!sk)
3258 sk = sk_SSL_CIPHER_new_null();
3259 if (!sk)
3260 return NULL;
3261 if (!sk_SSL_CIPHER_push(sk, c)) {
3262 sk_SSL_CIPHER_free(sk);
3263 return NULL;
3264 }
3265 }
3266 }
3267 return sk;
3268 }
3269
3270 /** return a STACK of the ciphers available for the SSL and in order of
3271 * algorithm id */
STACK_OF(SSL_CIPHER)3272 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
3273 {
3274 if (s != NULL) {
3275 if (s->cipher_list_by_id != NULL)
3276 return s->cipher_list_by_id;
3277 else if (s->ssl.ctx != NULL
3278 && s->ssl.ctx->cipher_list_by_id != NULL)
3279 return s->ssl.ctx->cipher_list_by_id;
3280 }
3281 return NULL;
3282 }
3283
3284 /** The old interface to get the same thing as SSL_get_ciphers() */
SSL_get_cipher_list(const SSL * s,int n)3285 const char *SSL_get_cipher_list(const SSL *s, int n)
3286 {
3287 const SSL_CIPHER *c;
3288 STACK_OF(SSL_CIPHER) *sk;
3289
3290 if (s == NULL)
3291 return NULL;
3292 sk = SSL_get_ciphers(s);
3293 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
3294 return NULL;
3295 c = sk_SSL_CIPHER_value(sk, n);
3296 if (c == NULL)
3297 return NULL;
3298 return c->name;
3299 }
3300
3301 /** return a STACK of the ciphers available for the SSL_CTX and in order of
3302 * preference */
STACK_OF(SSL_CIPHER)3303 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3304 {
3305 if (ctx != NULL)
3306 return ctx->cipher_list;
3307 return NULL;
3308 }
3309
3310 /*
3311 * Distinguish between ciphers controlled by set_ciphersuite() and
3312 * set_cipher_list() when counting.
3313 */
cipher_list_tls12_num(STACK_OF (SSL_CIPHER)* sk)3314 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3315 {
3316 int i, num = 0;
3317 const SSL_CIPHER *c;
3318
3319 if (sk == NULL)
3320 return 0;
3321 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3322 c = sk_SSL_CIPHER_value(sk, i);
3323 if (c->min_tls >= TLS1_3_VERSION)
3324 continue;
3325 num++;
3326 }
3327 return num;
3328 }
3329
3330 /** specify the ciphers to be used by default by the SSL_CTX */
SSL_CTX_set_cipher_list(SSL_CTX * ctx,const char * str)3331 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
3332 {
3333 STACK_OF(SSL_CIPHER) *sk;
3334
3335 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3336 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3337 ctx->cert);
3338 /*
3339 * ssl_create_cipher_list may return an empty stack if it was unable to
3340 * find a cipher matching the given rule string (for example if the rule
3341 * string specifies a cipher which has been disabled). This is not an
3342 * error as far as ssl_create_cipher_list is concerned, and hence
3343 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3344 */
3345 if (sk == NULL)
3346 return 0;
3347 else if (cipher_list_tls12_num(sk) == 0) {
3348 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3349 return 0;
3350 }
3351 return 1;
3352 }
3353
3354 /** specify the ciphers to be used by the SSL */
SSL_set_cipher_list(SSL * s,const char * str)3355 int SSL_set_cipher_list(SSL *s, const char *str)
3356 {
3357 STACK_OF(SSL_CIPHER) *sk;
3358 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3359
3360 if (sc == NULL)
3361 return 0;
3362
3363 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3364 &sc->cipher_list, &sc->cipher_list_by_id, str,
3365 sc->cert);
3366 /* see comment in SSL_CTX_set_cipher_list */
3367 if (sk == NULL)
3368 return 0;
3369 else if (cipher_list_tls12_num(sk) == 0) {
3370 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3371 return 0;
3372 }
3373 return 1;
3374 }
3375
SSL_get_shared_ciphers(const SSL * s,char * buf,int size)3376 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
3377 {
3378 char *p;
3379 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
3380 const SSL_CIPHER *c;
3381 int i;
3382 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3383
3384 if (sc == NULL)
3385 return NULL;
3386
3387 if (!sc->server
3388 || sc->peer_ciphers == NULL
3389 || size < 2)
3390 return NULL;
3391
3392 p = buf;
3393 clntsk = sc->peer_ciphers;
3394 srvrsk = SSL_get_ciphers(s);
3395 if (clntsk == NULL || srvrsk == NULL)
3396 return NULL;
3397
3398 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
3399 return NULL;
3400
3401 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3402 int n;
3403
3404 c = sk_SSL_CIPHER_value(clntsk, i);
3405 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3406 continue;
3407
3408 n = OPENSSL_strnlen(c->name, size);
3409 if (n >= size) {
3410 if (p != buf)
3411 --p;
3412 *p = '\0';
3413 return buf;
3414 }
3415 memcpy(p, c->name, n);
3416 p += n;
3417 *(p++) = ':';
3418 size -= n + 1;
3419 }
3420 p[-1] = '\0';
3421 return buf;
3422 }
3423
3424 /**
3425 * Return the requested servername (SNI) value. Note that the behaviour varies
3426 * depending on:
3427 * - whether this is called by the client or the server,
3428 * - if we are before or during/after the handshake,
3429 * - if a resumption or normal handshake is being attempted/has occurred
3430 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3431 *
3432 * Note that only the host_name type is defined (RFC 3546).
3433 */
SSL_get_servername(const SSL * s,const int type)3434 const char *SSL_get_servername(const SSL *s, const int type)
3435 {
3436 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3437 int server;
3438
3439 if (sc == NULL)
3440 return NULL;
3441
3442 /*
3443 * If we don't know if we are the client or the server yet then we assume
3444 * client.
3445 */
3446 server = sc->handshake_func == NULL ? 0 : sc->server;
3447
3448 if (type != TLSEXT_NAMETYPE_host_name)
3449 return NULL;
3450
3451 if (server) {
3452 /**
3453 * Server side
3454 * In TLSv1.3 on the server SNI is not associated with the session
3455 * but in TLSv1.2 or below it is.
3456 *
3457 * Before the handshake:
3458 * - return NULL
3459 *
3460 * During/after the handshake (TLSv1.2 or below resumption occurred):
3461 * - If a servername was accepted by the server in the original
3462 * handshake then it will return that servername, or NULL otherwise.
3463 *
3464 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3465 * - The function will return the servername requested by the client in
3466 * this handshake or NULL if none was requested.
3467 */
3468 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3469 return sc->session->ext.hostname;
3470 } else {
3471 /**
3472 * Client side
3473 *
3474 * Before the handshake:
3475 * - If a servername has been set via a call to
3476 * SSL_set_tlsext_host_name() then it will return that servername
3477 * - If one has not been set, but a TLSv1.2 resumption is being
3478 * attempted and the session from the original handshake had a
3479 * servername accepted by the server then it will return that
3480 * servername
3481 * - Otherwise it returns NULL
3482 *
3483 * During/after the handshake (TLSv1.2 or below resumption occurred):
3484 * - If the session from the original handshake had a servername accepted
3485 * by the server then it will return that servername.
3486 * - Otherwise it returns the servername set via
3487 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3488 *
3489 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3490 * - It will return the servername set via SSL_set_tlsext_host_name()
3491 * (or NULL if it was not called).
3492 */
3493 if (SSL_in_before(s)) {
3494 if (sc->ext.hostname == NULL
3495 && sc->session != NULL
3496 && sc->session->ssl_version != TLS1_3_VERSION)
3497 return sc->session->ext.hostname;
3498 } else {
3499 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3500 && sc->session->ext.hostname != NULL)
3501 return sc->session->ext.hostname;
3502 }
3503 }
3504
3505 return sc->ext.hostname;
3506 }
3507
SSL_get_servername_type(const SSL * s)3508 int SSL_get_servername_type(const SSL *s)
3509 {
3510 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3511 return TLSEXT_NAMETYPE_host_name;
3512 return -1;
3513 }
3514
3515 /*
3516 * SSL_select_next_proto implements the standard protocol selection. It is
3517 * expected that this function is called from the callback set by
3518 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3519 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3520 * not included in the length. A byte string of length 0 is invalid. No byte
3521 * string may be truncated. The current, but experimental algorithm for
3522 * selecting the protocol is: 1) If the server doesn't support NPN then this
3523 * is indicated to the callback. In this case, the client application has to
3524 * abort the connection or have a default application level protocol. 2) If
3525 * the server supports NPN, but advertises an empty list then the client
3526 * selects the first protocol in its list, but indicates via the API that this
3527 * fallback case was enacted. 3) Otherwise, the client finds the first
3528 * protocol in the server's list that it supports and selects this protocol.
3529 * This is because it's assumed that the server has better information about
3530 * which protocol a client should use. 4) If the client doesn't support any
3531 * of the server's advertised protocols, then this is treated the same as
3532 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3533 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3534 */
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)3535 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3536 const unsigned char *server,
3537 unsigned int server_len,
3538 const unsigned char *client, unsigned int client_len)
3539 {
3540 PACKET cpkt, csubpkt, spkt, ssubpkt;
3541
3542 if (!PACKET_buf_init(&cpkt, client, client_len)
3543 || !PACKET_get_length_prefixed_1(&cpkt, &csubpkt)
3544 || PACKET_remaining(&csubpkt) == 0) {
3545 *out = NULL;
3546 *outlen = 0;
3547 return OPENSSL_NPN_NO_OVERLAP;
3548 }
3549
3550 /*
3551 * Set the default opportunistic protocol. Will be overwritten if we find
3552 * a match.
3553 */
3554 *out = (unsigned char *)PACKET_data(&csubpkt);
3555 *outlen = (unsigned char)PACKET_remaining(&csubpkt);
3556
3557 /*
3558 * For each protocol in server preference order, see if we support it.
3559 */
3560 if (PACKET_buf_init(&spkt, server, server_len)) {
3561 while (PACKET_get_length_prefixed_1(&spkt, &ssubpkt)) {
3562 if (PACKET_remaining(&ssubpkt) == 0)
3563 continue; /* Invalid - ignore it */
3564 if (PACKET_buf_init(&cpkt, client, client_len)) {
3565 while (PACKET_get_length_prefixed_1(&cpkt, &csubpkt)) {
3566 if (PACKET_equal(&csubpkt, PACKET_data(&ssubpkt),
3567 PACKET_remaining(&ssubpkt))) {
3568 /* We found a match */
3569 *out = (unsigned char *)PACKET_data(&ssubpkt);
3570 *outlen = (unsigned char)PACKET_remaining(&ssubpkt);
3571 return OPENSSL_NPN_NEGOTIATED;
3572 }
3573 }
3574 /* Ignore spurious trailing bytes in the client list */
3575 } else {
3576 /* This should never happen */
3577 return OPENSSL_NPN_NO_OVERLAP;
3578 }
3579 }
3580 /* Ignore spurious trailing bytes in the server list */
3581 }
3582
3583 /*
3584 * There's no overlap between our protocols and the server's list. We use
3585 * the default opportunistic protocol selected earlier
3586 */
3587 return OPENSSL_NPN_NO_OVERLAP;
3588 }
3589
3590 #ifndef OPENSSL_NO_NEXTPROTONEG
3591 /*
3592 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3593 * client's requested protocol for this connection and returns 0. If the
3594 * client didn't request any protocol, then *data is set to NULL. Note that
3595 * the client can request any protocol it chooses. The value returned from
3596 * this function need not be a member of the list of supported protocols
3597 * provided by the callback.
3598 */
SSL_get0_next_proto_negotiated(const SSL * s,const unsigned char ** data,unsigned * len)3599 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3600 unsigned *len)
3601 {
3602 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3603
3604 if (sc == NULL) {
3605 /* We have no other way to indicate error */
3606 *data = NULL;
3607 *len = 0;
3608 return;
3609 }
3610
3611 *data = sc->ext.npn;
3612 if (*data == NULL) {
3613 *len = 0;
3614 } else {
3615 *len = (unsigned int)sc->ext.npn_len;
3616 }
3617 }
3618
3619 /*
3620 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3621 * a TLS server needs a list of supported protocols for Next Protocol
3622 * Negotiation. The returned list must be in wire format. The list is
3623 * returned by setting |out| to point to it and |outlen| to its length. This
3624 * memory will not be modified, but one should assume that the SSL* keeps a
3625 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3626 * wishes to advertise. Otherwise, no such extension will be included in the
3627 * ServerHello.
3628 */
SSL_CTX_set_npn_advertised_cb(SSL_CTX * ctx,SSL_CTX_npn_advertised_cb_func cb,void * arg)3629 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3630 SSL_CTX_npn_advertised_cb_func cb,
3631 void *arg)
3632 {
3633 if (IS_QUIC_CTX(ctx))
3634 /* NPN not allowed for QUIC */
3635 return;
3636
3637 ctx->ext.npn_advertised_cb = cb;
3638 ctx->ext.npn_advertised_cb_arg = arg;
3639 }
3640
3641 /*
3642 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3643 * client needs to select a protocol from the server's provided list. |out|
3644 * must be set to point to the selected protocol (which may be within |in|).
3645 * The length of the protocol name must be written into |outlen|. The
3646 * server's advertised protocols are provided in |in| and |inlen|. The
3647 * callback can assume that |in| is syntactically valid. The client must
3648 * select a protocol. It is fatal to the connection if this callback returns
3649 * a value other than SSL_TLSEXT_ERR_OK.
3650 */
SSL_CTX_set_npn_select_cb(SSL_CTX * ctx,SSL_CTX_npn_select_cb_func cb,void * arg)3651 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3652 SSL_CTX_npn_select_cb_func cb,
3653 void *arg)
3654 {
3655 if (IS_QUIC_CTX(ctx))
3656 /* NPN not allowed for QUIC */
3657 return;
3658
3659 ctx->ext.npn_select_cb = cb;
3660 ctx->ext.npn_select_cb_arg = arg;
3661 }
3662 #endif
3663
alpn_value_ok(const unsigned char * protos,unsigned int protos_len)3664 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3665 {
3666 unsigned int idx;
3667
3668 if (protos_len < 2 || protos == NULL)
3669 return 0;
3670
3671 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3672 if (protos[idx] == 0)
3673 return 0;
3674 }
3675 return idx == protos_len;
3676 }
3677 /*
3678 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3679 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3680 * length-prefixed strings). Returns 0 on success.
3681 */
SSL_CTX_set_alpn_protos(SSL_CTX * ctx,const unsigned char * protos,unsigned int protos_len)3682 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3683 unsigned int protos_len)
3684 {
3685 unsigned char *alpn;
3686
3687 if (protos_len == 0 || protos == NULL) {
3688 OPENSSL_free(ctx->ext.alpn);
3689 ctx->ext.alpn = NULL;
3690 ctx->ext.alpn_len = 0;
3691 return 0;
3692 }
3693 /* Not valid per RFC */
3694 if (!alpn_value_ok(protos, protos_len))
3695 return 1;
3696
3697 alpn = OPENSSL_memdup(protos, protos_len);
3698 if (alpn == NULL)
3699 return 1;
3700 OPENSSL_free(ctx->ext.alpn);
3701 ctx->ext.alpn = alpn;
3702 ctx->ext.alpn_len = protos_len;
3703
3704 return 0;
3705 }
3706
3707 /*
3708 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3709 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3710 * length-prefixed strings). Returns 0 on success.
3711 */
SSL_set_alpn_protos(SSL * ssl,const unsigned char * protos,unsigned int protos_len)3712 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3713 unsigned int protos_len)
3714 {
3715 unsigned char *alpn;
3716 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3717
3718 if (sc == NULL)
3719 return 1;
3720
3721 if (protos_len == 0 || protos == NULL) {
3722 OPENSSL_free(sc->ext.alpn);
3723 sc->ext.alpn = NULL;
3724 sc->ext.alpn_len = 0;
3725 return 0;
3726 }
3727 /* Not valid per RFC */
3728 if (!alpn_value_ok(protos, protos_len))
3729 return 1;
3730
3731 alpn = OPENSSL_memdup(protos, protos_len);
3732 if (alpn == NULL)
3733 return 1;
3734 OPENSSL_free(sc->ext.alpn);
3735 sc->ext.alpn = alpn;
3736 sc->ext.alpn_len = protos_len;
3737
3738 return 0;
3739 }
3740
3741 /*
3742 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3743 * called during ClientHello processing in order to select an ALPN protocol
3744 * from the client's list of offered protocols.
3745 */
SSL_CTX_set_alpn_select_cb(SSL_CTX * ctx,SSL_CTX_alpn_select_cb_func cb,void * arg)3746 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3747 SSL_CTX_alpn_select_cb_func cb,
3748 void *arg)
3749 {
3750 ctx->ext.alpn_select_cb = cb;
3751 ctx->ext.alpn_select_cb_arg = arg;
3752 }
3753
3754 /*
3755 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3756 * On return it sets |*data| to point to |*len| bytes of protocol name
3757 * (not including the leading length-prefix byte). If the server didn't
3758 * respond with a negotiated protocol then |*len| will be zero.
3759 */
SSL_get0_alpn_selected(const SSL * ssl,const unsigned char ** data,unsigned int * len)3760 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3761 unsigned int *len)
3762 {
3763 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3764
3765 if (sc == NULL) {
3766 /* We have no other way to indicate error */
3767 *data = NULL;
3768 *len = 0;
3769 return;
3770 }
3771
3772 *data = sc->s3.alpn_selected;
3773 if (*data == NULL)
3774 *len = 0;
3775 else
3776 *len = (unsigned int)sc->s3.alpn_selected_len;
3777 }
3778
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)3779 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3780 const char *label, size_t llen,
3781 const unsigned char *context, size_t contextlen,
3782 int use_context)
3783 {
3784 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3785
3786 if (sc == NULL)
3787 return -1;
3788
3789 if (sc->session == NULL
3790 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3791 return -1;
3792
3793 return sc->ssl.method->ssl3_enc->export_keying_material(sc, out, olen, label,
3794 llen, context,
3795 contextlen,
3796 use_context);
3797 }
3798
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)3799 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3800 const char *label, size_t llen,
3801 const unsigned char *context,
3802 size_t contextlen)
3803 {
3804 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3805
3806 if (sc == NULL)
3807 return -1;
3808
3809 if (sc->version != TLS1_3_VERSION)
3810 return 0;
3811
3812 return tls13_export_keying_material_early(sc, out, olen, label, llen,
3813 context, contextlen);
3814 }
3815
ssl_session_hash(const SSL_SESSION * a)3816 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3817 {
3818 const unsigned char *session_id = a->session_id;
3819 unsigned long l;
3820 unsigned char tmp_storage[4];
3821
3822 if (a->session_id_length < sizeof(tmp_storage)) {
3823 memset(tmp_storage, 0, sizeof(tmp_storage));
3824 memcpy(tmp_storage, a->session_id, a->session_id_length);
3825 session_id = tmp_storage;
3826 }
3827
3828 l = (unsigned long)
3829 ((unsigned long)session_id[0]) |
3830 ((unsigned long)session_id[1] << 8L) |
3831 ((unsigned long)session_id[2] << 16L) |
3832 ((unsigned long)session_id[3] << 24L);
3833 return l;
3834 }
3835
3836 /*
3837 * NB: If this function (or indeed the hash function which uses a sort of
3838 * coarser function than this one) is changed, ensure
3839 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3840 * being able to construct an SSL_SESSION that will collide with any existing
3841 * session with a matching session ID.
3842 */
ssl_session_cmp(const SSL_SESSION * a,const SSL_SESSION * b)3843 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3844 {
3845 if (a->ssl_version != b->ssl_version)
3846 return 1;
3847 if (a->session_id_length != b->session_id_length)
3848 return 1;
3849 return memcmp(a->session_id, b->session_id, a->session_id_length);
3850 }
3851
3852 /*
3853 * These wrapper functions should remain rather than redeclaring
3854 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3855 * variable. The reason is that the functions aren't static, they're exposed
3856 * via ssl.h.
3857 */
3858
SSL_CTX_new_ex(OSSL_LIB_CTX * libctx,const char * propq,const SSL_METHOD * meth)3859 SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3860 const SSL_METHOD *meth)
3861 {
3862 SSL_CTX *ret = NULL;
3863 #ifndef OPENSSL_NO_COMP_ALG
3864 int i;
3865 #endif
3866
3867 if (meth == NULL) {
3868 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3869 return NULL;
3870 }
3871
3872 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3873 return NULL;
3874
3875 /* Doing this for the run once effect */
3876 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3877 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3878 goto err;
3879 }
3880
3881 ret = OPENSSL_zalloc(sizeof(*ret));
3882 if (ret == NULL)
3883 return NULL;
3884
3885 /* Init the reference counting before any call to SSL_CTX_free */
3886 if (!CRYPTO_NEW_REF(&ret->references, 1)) {
3887 OPENSSL_free(ret);
3888 return NULL;
3889 }
3890
3891 ret->lock = CRYPTO_THREAD_lock_new();
3892 if (ret->lock == NULL) {
3893 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3894 goto err;
3895 }
3896
3897 #ifdef TSAN_REQUIRES_LOCKING
3898 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3899 if (ret->tsan_lock == NULL) {
3900 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3901 goto err;
3902 }
3903 #endif
3904
3905 ret->libctx = libctx;
3906 if (propq != NULL) {
3907 ret->propq = OPENSSL_strdup(propq);
3908 if (ret->propq == NULL)
3909 goto err;
3910 }
3911
3912 ret->method = meth;
3913 ret->min_proto_version = 0;
3914 ret->max_proto_version = 0;
3915 ret->mode = SSL_MODE_AUTO_RETRY;
3916 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3917 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3918 /* We take the system default. */
3919 ret->session_timeout = meth->get_timeout();
3920 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3921 ret->verify_mode = SSL_VERIFY_NONE;
3922
3923 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3924 if (ret->sessions == NULL) {
3925 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3926 goto err;
3927 }
3928 ret->cert_store = X509_STORE_new();
3929 if (ret->cert_store == NULL) {
3930 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3931 goto err;
3932 }
3933 #ifndef OPENSSL_NO_CT
3934 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3935 if (ret->ctlog_store == NULL) {
3936 ERR_raise(ERR_LIB_SSL, ERR_R_CT_LIB);
3937 goto err;
3938 }
3939 #endif
3940
3941 /* initialize cipher/digest methods table */
3942 if (!ssl_load_ciphers(ret)) {
3943 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3944 goto err;
3945 }
3946
3947 if (!ssl_load_groups(ret)) {
3948 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3949 goto err;
3950 }
3951
3952 /* load provider sigalgs */
3953 if (!ssl_load_sigalgs(ret)) {
3954 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3955 goto err;
3956 }
3957
3958 /* initialise sig algs */
3959 if (!ssl_setup_sigalgs(ret)) {
3960 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3961 goto err;
3962 }
3963
3964 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites())) {
3965 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3966 goto err;
3967 }
3968
3969 if ((ret->cert = ssl_cert_new(SSL_PKEY_NUM + ret->sigalg_list_len)) == NULL) {
3970 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3971 goto err;
3972 }
3973
3974 if (!ssl_create_cipher_list(ret,
3975 ret->tls13_ciphersuites,
3976 &ret->cipher_list, &ret->cipher_list_by_id,
3977 OSSL_default_cipher_list(), ret->cert)
3978 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3979 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3980 goto err;
3981 }
3982
3983 ret->param = X509_VERIFY_PARAM_new();
3984 if (ret->param == NULL) {
3985 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3986 goto err;
3987 }
3988
3989 /*
3990 * If these aren't available from the provider we'll get NULL returns.
3991 * That's fine but will cause errors later if SSLv3 is negotiated
3992 */
3993 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3994 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3995
3996 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL) {
3997 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3998 goto err;
3999 }
4000
4001 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL) {
4002 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
4003 goto err;
4004 }
4005
4006 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data)) {
4007 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
4008 goto err;
4009 }
4010
4011 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
4012 goto err;
4013
4014 /* No compression for DTLS */
4015 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
4016 ret->comp_methods = SSL_COMP_get_compression_methods();
4017
4018 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
4019 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
4020
4021 /* Setup RFC5077 ticket keys */
4022 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
4023 sizeof(ret->ext.tick_key_name), 0) <= 0)
4024 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
4025 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
4026 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
4027 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
4028 ret->options |= SSL_OP_NO_TICKET;
4029
4030 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
4031 sizeof(ret->ext.cookie_hmac_key), 0) <= 0) {
4032 ERR_raise(ERR_LIB_SSL, ERR_R_RAND_LIB);
4033 goto err;
4034 }
4035
4036 #ifndef OPENSSL_NO_SRP
4037 if (!ssl_ctx_srp_ctx_init_intern(ret)) {
4038 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
4039 goto err;
4040 }
4041 #endif
4042 #ifndef OPENSSL_NO_ENGINE
4043 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
4044 # define eng_strx(x) #x
4045 # define eng_str(x) eng_strx(x)
4046 /* Use specific client engine automatically... ignore errors */
4047 {
4048 ENGINE *eng;
4049 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
4050 if (!eng) {
4051 ERR_clear_error();
4052 ENGINE_load_builtin_engines();
4053 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
4054 }
4055 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
4056 ERR_clear_error();
4057 }
4058 # endif
4059 #endif
4060
4061 #ifndef OPENSSL_NO_COMP_ALG
4062 /*
4063 * Set the default order: brotli, zlib, zstd
4064 * Including only those enabled algorithms
4065 */
4066 memset(ret->cert_comp_prefs, 0, sizeof(ret->cert_comp_prefs));
4067 i = 0;
4068 if (ossl_comp_has_alg(TLSEXT_comp_cert_brotli))
4069 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_brotli;
4070 if (ossl_comp_has_alg(TLSEXT_comp_cert_zlib))
4071 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zlib;
4072 if (ossl_comp_has_alg(TLSEXT_comp_cert_zstd))
4073 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zstd;
4074 #endif
4075 /*
4076 * Disable compression by default to prevent CRIME. Applications can
4077 * re-enable compression by configuring
4078 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
4079 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
4080 * middlebox compatibility by default. This may be disabled by default in
4081 * a later OpenSSL version.
4082 */
4083 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
4084
4085 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
4086
4087 /*
4088 * We cannot usefully set a default max_early_data here (which gets
4089 * propagated in SSL_new(), for the following reason: setting the
4090 * SSL field causes tls_construct_stoc_early_data() to tell the
4091 * client that early data will be accepted when constructing a TLS 1.3
4092 * session ticket, and the client will accordingly send us early data
4093 * when using that ticket (if the client has early data to send).
4094 * However, in order for the early data to actually be consumed by
4095 * the application, the application must also have calls to
4096 * SSL_read_early_data(); otherwise we'll just skip past the early data
4097 * and ignore it. So, since the application must add calls to
4098 * SSL_read_early_data(), we also require them to add
4099 * calls to SSL_CTX_set_max_early_data() in order to use early data,
4100 * eliminating the bandwidth-wasting early data in the case described
4101 * above.
4102 */
4103 ret->max_early_data = 0;
4104
4105 /*
4106 * Default recv_max_early_data is a fully loaded single record. Could be
4107 * split across multiple records in practice. We set this differently to
4108 * max_early_data so that, in the default case, we do not advertise any
4109 * support for early_data, but if a client were to send us some (e.g.
4110 * because of an old, stale ticket) then we will tolerate it and skip over
4111 * it.
4112 */
4113 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
4114
4115 /* By default we send two session tickets automatically in TLSv1.3 */
4116 ret->num_tickets = 2;
4117
4118 if (!ssl_ctx_system_config(ret)) {
4119 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_SYSTEM_DEFAULT_CONFIG);
4120 goto err;
4121 }
4122
4123 return ret;
4124 err:
4125 SSL_CTX_free(ret);
4126 return NULL;
4127 }
4128
SSL_CTX_new(const SSL_METHOD * meth)4129 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
4130 {
4131 return SSL_CTX_new_ex(NULL, NULL, meth);
4132 }
4133
SSL_CTX_up_ref(SSL_CTX * ctx)4134 int SSL_CTX_up_ref(SSL_CTX *ctx)
4135 {
4136 int i;
4137
4138 if (CRYPTO_UP_REF(&ctx->references, &i) <= 0)
4139 return 0;
4140
4141 REF_PRINT_COUNT("SSL_CTX", ctx);
4142 REF_ASSERT_ISNT(i < 2);
4143 return ((i > 1) ? 1 : 0);
4144 }
4145
SSL_CTX_free(SSL_CTX * a)4146 void SSL_CTX_free(SSL_CTX *a)
4147 {
4148 int i;
4149 size_t j;
4150
4151 if (a == NULL)
4152 return;
4153
4154 CRYPTO_DOWN_REF(&a->references, &i);
4155 REF_PRINT_COUNT("SSL_CTX", a);
4156 if (i > 0)
4157 return;
4158 REF_ASSERT_ISNT(i < 0);
4159
4160 X509_VERIFY_PARAM_free(a->param);
4161 dane_ctx_final(&a->dane);
4162
4163 /*
4164 * Free internal session cache. However: the remove_cb() may reference
4165 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
4166 * after the sessions were flushed.
4167 * As the ex_data handling routines might also touch the session cache,
4168 * the most secure solution seems to be: empty (flush) the cache, then
4169 * free ex_data, then finally free the cache.
4170 * (See ticket [openssl.org #212].)
4171 */
4172 if (a->sessions != NULL)
4173 SSL_CTX_flush_sessions_ex(a, 0);
4174
4175 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
4176 lh_SSL_SESSION_free(a->sessions);
4177 X509_STORE_free(a->cert_store);
4178 #ifndef OPENSSL_NO_CT
4179 CTLOG_STORE_free(a->ctlog_store);
4180 #endif
4181 sk_SSL_CIPHER_free(a->cipher_list);
4182 sk_SSL_CIPHER_free(a->cipher_list_by_id);
4183 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
4184 ssl_cert_free(a->cert);
4185 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
4186 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
4187 OSSL_STACK_OF_X509_free(a->extra_certs);
4188 a->comp_methods = NULL;
4189 #ifndef OPENSSL_NO_SRTP
4190 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
4191 #endif
4192 #ifndef OPENSSL_NO_SRP
4193 ssl_ctx_srp_ctx_free_intern(a);
4194 #endif
4195 #ifndef OPENSSL_NO_ENGINE
4196 tls_engine_finish(a->client_cert_engine);
4197 #endif
4198
4199 OPENSSL_free(a->ext.ecpointformats);
4200 OPENSSL_free(a->ext.supportedgroups);
4201 OPENSSL_free(a->ext.supported_groups_default);
4202 OPENSSL_free(a->ext.alpn);
4203 OPENSSL_secure_free(a->ext.secure);
4204
4205 ssl_evp_md_free(a->md5);
4206 ssl_evp_md_free(a->sha1);
4207
4208 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
4209 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
4210 for (j = 0; j < SSL_MD_NUM_IDX; j++)
4211 ssl_evp_md_free(a->ssl_digest_methods[j]);
4212 for (j = 0; j < a->group_list_len; j++) {
4213 OPENSSL_free(a->group_list[j].tlsname);
4214 OPENSSL_free(a->group_list[j].realname);
4215 OPENSSL_free(a->group_list[j].algorithm);
4216 }
4217 OPENSSL_free(a->group_list);
4218 for (j = 0; j < a->sigalg_list_len; j++) {
4219 OPENSSL_free(a->sigalg_list[j].name);
4220 OPENSSL_free(a->sigalg_list[j].sigalg_name);
4221 OPENSSL_free(a->sigalg_list[j].sigalg_oid);
4222 OPENSSL_free(a->sigalg_list[j].sig_name);
4223 OPENSSL_free(a->sigalg_list[j].sig_oid);
4224 OPENSSL_free(a->sigalg_list[j].hash_name);
4225 OPENSSL_free(a->sigalg_list[j].hash_oid);
4226 OPENSSL_free(a->sigalg_list[j].keytype);
4227 OPENSSL_free(a->sigalg_list[j].keytype_oid);
4228 }
4229 OPENSSL_free(a->sigalg_list);
4230 OPENSSL_free(a->ssl_cert_info);
4231
4232 OPENSSL_free(a->sigalg_lookup_cache);
4233 OPENSSL_free(a->tls12_sigalgs);
4234
4235 OPENSSL_free(a->client_cert_type);
4236 OPENSSL_free(a->server_cert_type);
4237
4238 CRYPTO_THREAD_lock_free(a->lock);
4239 CRYPTO_FREE_REF(&a->references);
4240 #ifdef TSAN_REQUIRES_LOCKING
4241 CRYPTO_THREAD_lock_free(a->tsan_lock);
4242 #endif
4243
4244 OPENSSL_free(a->propq);
4245 #ifndef OPENSSL_NO_QLOG
4246 OPENSSL_free(a->qlog_title);
4247 #endif
4248
4249 OPENSSL_free(a);
4250 }
4251
SSL_CTX_set_default_passwd_cb(SSL_CTX * ctx,pem_password_cb * cb)4252 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
4253 {
4254 ctx->default_passwd_callback = cb;
4255 }
4256
SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX * ctx,void * u)4257 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
4258 {
4259 ctx->default_passwd_callback_userdata = u;
4260 }
4261
SSL_CTX_get_default_passwd_cb(SSL_CTX * ctx)4262 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
4263 {
4264 return ctx->default_passwd_callback;
4265 }
4266
SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX * ctx)4267 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
4268 {
4269 return ctx->default_passwd_callback_userdata;
4270 }
4271
SSL_set_default_passwd_cb(SSL * s,pem_password_cb * cb)4272 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
4273 {
4274 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4275
4276 if (sc == NULL)
4277 return;
4278
4279 sc->default_passwd_callback = cb;
4280 }
4281
SSL_set_default_passwd_cb_userdata(SSL * s,void * u)4282 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
4283 {
4284 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4285
4286 if (sc == NULL)
4287 return;
4288
4289 sc->default_passwd_callback_userdata = u;
4290 }
4291
SSL_get_default_passwd_cb(SSL * s)4292 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
4293 {
4294 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4295
4296 if (sc == NULL)
4297 return NULL;
4298
4299 return sc->default_passwd_callback;
4300 }
4301
SSL_get_default_passwd_cb_userdata(SSL * s)4302 void *SSL_get_default_passwd_cb_userdata(SSL *s)
4303 {
4304 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4305
4306 if (sc == NULL)
4307 return NULL;
4308
4309 return sc->default_passwd_callback_userdata;
4310 }
4311
SSL_CTX_set_cert_verify_callback(SSL_CTX * ctx,int (* cb)(X509_STORE_CTX *,void *),void * arg)4312 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4313 int (*cb) (X509_STORE_CTX *, void *),
4314 void *arg)
4315 {
4316 ctx->app_verify_callback = cb;
4317 ctx->app_verify_arg = arg;
4318 }
4319
SSL_CTX_set_verify(SSL_CTX * ctx,int mode,int (* cb)(int,X509_STORE_CTX *))4320 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4321 int (*cb) (int, X509_STORE_CTX *))
4322 {
4323 ctx->verify_mode = mode;
4324 ctx->default_verify_callback = cb;
4325 }
4326
SSL_CTX_set_verify_depth(SSL_CTX * ctx,int depth)4327 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4328 {
4329 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4330 }
4331
SSL_CTX_set_cert_cb(SSL_CTX * c,int (* cb)(SSL * ssl,void * arg),void * arg)4332 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
4333 {
4334 ssl_cert_set_cert_cb(c->cert, cb, arg);
4335 }
4336
SSL_set_cert_cb(SSL * s,int (* cb)(SSL * ssl,void * arg),void * arg)4337 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4338 {
4339 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4340
4341 if (sc == NULL)
4342 return;
4343
4344 ssl_cert_set_cert_cb(sc->cert, cb, arg);
4345 }
4346
ssl_set_masks(SSL_CONNECTION * s)4347 void ssl_set_masks(SSL_CONNECTION *s)
4348 {
4349 CERT *c = s->cert;
4350 uint32_t *pvalid = s->s3.tmp.valid_flags;
4351 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4352 unsigned long mask_k, mask_a;
4353 int have_ecc_cert, ecdsa_ok;
4354
4355 if (c == NULL)
4356 return;
4357
4358 dh_tmp = (c->dh_tmp != NULL
4359 || c->dh_tmp_cb != NULL
4360 || c->dh_tmp_auto);
4361
4362 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4363 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4364 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4365 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4366 mask_k = 0;
4367 mask_a = 0;
4368
4369 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4370 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4371
4372 #ifndef OPENSSL_NO_GOST
4373 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4374 mask_k |= SSL_kGOST | SSL_kGOST18;
4375 mask_a |= SSL_aGOST12;
4376 }
4377 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4378 mask_k |= SSL_kGOST | SSL_kGOST18;
4379 mask_a |= SSL_aGOST12;
4380 }
4381 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4382 mask_k |= SSL_kGOST;
4383 mask_a |= SSL_aGOST01;
4384 }
4385 #endif
4386
4387 if (rsa_enc)
4388 mask_k |= SSL_kRSA;
4389
4390 if (dh_tmp)
4391 mask_k |= SSL_kDHE;
4392
4393 /*
4394 * If we only have an RSA-PSS certificate allow RSA authentication
4395 * if TLS 1.2 and peer supports it.
4396 */
4397
4398 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4399 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4400 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4401 mask_a |= SSL_aRSA;
4402
4403 if (dsa_sign) {
4404 mask_a |= SSL_aDSS;
4405 }
4406
4407 mask_a |= SSL_aNULL;
4408
4409 /*
4410 * You can do anything with an RPK key, since there's no cert to restrict it
4411 * But we need to check for private keys
4412 */
4413 if (pvalid[SSL_PKEY_RSA] & CERT_PKEY_RPK) {
4414 mask_a |= SSL_aRSA;
4415 mask_k |= SSL_kRSA;
4416 }
4417 if (pvalid[SSL_PKEY_ECC] & CERT_PKEY_RPK)
4418 mask_a |= SSL_aECDSA;
4419 if (TLS1_get_version(&s->ssl) == TLS1_2_VERSION) {
4420 if (pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_RPK)
4421 mask_a |= SSL_aRSA;
4422 if (pvalid[SSL_PKEY_ED25519] & CERT_PKEY_RPK
4423 || pvalid[SSL_PKEY_ED448] & CERT_PKEY_RPK)
4424 mask_a |= SSL_aECDSA;
4425 }
4426
4427 /*
4428 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4429 * depending on the key usage extension.
4430 */
4431 if (have_ecc_cert) {
4432 uint32_t ex_kusage;
4433 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4434 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4435 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4436 ecdsa_ok = 0;
4437 if (ecdsa_ok)
4438 mask_a |= SSL_aECDSA;
4439 }
4440 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4441 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4442 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4443 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4444 mask_a |= SSL_aECDSA;
4445
4446 /* Allow Ed448 for TLS 1.2 if peer supports it */
4447 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4448 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4449 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4450 mask_a |= SSL_aECDSA;
4451
4452 mask_k |= SSL_kECDHE;
4453
4454 #ifndef OPENSSL_NO_PSK
4455 mask_k |= SSL_kPSK;
4456 mask_a |= SSL_aPSK;
4457 if (mask_k & SSL_kRSA)
4458 mask_k |= SSL_kRSAPSK;
4459 if (mask_k & SSL_kDHE)
4460 mask_k |= SSL_kDHEPSK;
4461 if (mask_k & SSL_kECDHE)
4462 mask_k |= SSL_kECDHEPSK;
4463 #endif
4464
4465 s->s3.tmp.mask_k = mask_k;
4466 s->s3.tmp.mask_a = mask_a;
4467 }
4468
ssl_check_srvr_ecc_cert_and_alg(X509 * x,SSL_CONNECTION * s)4469 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
4470 {
4471 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4472 /* key usage, if present, must allow signing */
4473 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4474 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4475 return 0;
4476 }
4477 }
4478 return 1; /* all checks are ok */
4479 }
4480
ssl_get_server_cert_serverinfo(SSL_CONNECTION * s,const unsigned char ** serverinfo,size_t * serverinfo_length)4481 int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4482 const unsigned char **serverinfo,
4483 size_t *serverinfo_length)
4484 {
4485 CERT_PKEY *cpk = s->s3.tmp.cert;
4486 *serverinfo_length = 0;
4487
4488 if (cpk == NULL || cpk->serverinfo == NULL)
4489 return 0;
4490
4491 *serverinfo = cpk->serverinfo;
4492 *serverinfo_length = cpk->serverinfo_length;
4493 return 1;
4494 }
4495
ssl_update_cache(SSL_CONNECTION * s,int mode)4496 void ssl_update_cache(SSL_CONNECTION *s, int mode)
4497 {
4498 int i;
4499
4500 /*
4501 * If the session_id_length is 0, we are not supposed to cache it, and it
4502 * would be rather hard to do anyway :-). Also if the session has already
4503 * been marked as not_resumable we should not cache it for later reuse.
4504 */
4505 if (s->session->session_id_length == 0 || s->session->not_resumable)
4506 return;
4507
4508 /*
4509 * If sid_ctx_length is 0 there is no specific application context
4510 * associated with this session, so when we try to resume it and
4511 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4512 * indication that this is actually a session for the proper application
4513 * context, and the *handshake* will fail, not just the resumption attempt.
4514 * Do not cache (on the server) these sessions that are not resumable
4515 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4516 */
4517 if (s->server && s->session->sid_ctx_length == 0
4518 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4519 return;
4520
4521 i = s->session_ctx->session_cache_mode;
4522 if ((i & mode) != 0
4523 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
4524 /*
4525 * Add the session to the internal cache. In server side TLSv1.3 we
4526 * normally don't do this because by default it's a full stateless ticket
4527 * with only a dummy session id so there is no reason to cache it,
4528 * unless:
4529 * - we are doing early_data, in which case we cache so that we can
4530 * detect replays
4531 * - the application has set a remove_session_cb so needs to know about
4532 * session timeout events
4533 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4534 */
4535 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4536 && (!SSL_CONNECTION_IS_TLS13(s)
4537 || !s->server
4538 || (s->max_early_data > 0
4539 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4540 || s->session_ctx->remove_session_cb != NULL
4541 || (s->options & SSL_OP_NO_TICKET) != 0))
4542 SSL_CTX_add_session(s->session_ctx, s->session);
4543
4544 /*
4545 * Add the session to the external cache. We do this even in server side
4546 * TLSv1.3 without early data because some applications just want to
4547 * know about the creation of a session and aren't doing a full cache.
4548 */
4549 if (s->session_ctx->new_session_cb != NULL) {
4550 SSL_SESSION_up_ref(s->session);
4551 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4552 s->session))
4553 SSL_SESSION_free(s->session);
4554 }
4555 }
4556
4557 /* auto flush every 255 connections */
4558 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4559 TSAN_QUALIFIER int *stat;
4560
4561 if (mode & SSL_SESS_CACHE_CLIENT)
4562 stat = &s->session_ctx->stats.sess_connect_good;
4563 else
4564 stat = &s->session_ctx->stats.sess_accept_good;
4565 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4566 SSL_CTX_flush_sessions_ex(s->session_ctx, time(NULL));
4567 }
4568 }
4569
SSL_CTX_get_ssl_method(const SSL_CTX * ctx)4570 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
4571 {
4572 return ctx->method;
4573 }
4574
SSL_get_ssl_method(const SSL * s)4575 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
4576 {
4577 return s->method;
4578 }
4579
SSL_set_ssl_method(SSL * s,const SSL_METHOD * meth)4580 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
4581 {
4582 int ret = 1;
4583 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4584
4585 /* Not allowed for QUIC */
4586 if (sc == NULL
4587 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth)
4588 || (s->type == SSL_TYPE_SSL_CONNECTION && IS_QUIC_METHOD(meth)))
4589 return 0;
4590
4591 if (s->method != meth) {
4592 const SSL_METHOD *sm = s->method;
4593 int (*hf) (SSL *) = sc->handshake_func;
4594
4595 if (sm->version == meth->version)
4596 s->method = meth;
4597 else {
4598 sm->ssl_deinit(s);
4599 s->method = meth;
4600 ret = s->method->ssl_init(s);
4601 }
4602
4603 if (hf == sm->ssl_connect)
4604 sc->handshake_func = meth->ssl_connect;
4605 else if (hf == sm->ssl_accept)
4606 sc->handshake_func = meth->ssl_accept;
4607 }
4608 return ret;
4609 }
4610
SSL_get_error(const SSL * s,int i)4611 int SSL_get_error(const SSL *s, int i)
4612 {
4613 return ossl_ssl_get_error(s, i, /*check_err=*/1);
4614 }
4615
ossl_ssl_get_error(const SSL * s,int i,int check_err)4616 int ossl_ssl_get_error(const SSL *s, int i, int check_err)
4617 {
4618 int reason;
4619 unsigned long l;
4620 BIO *bio;
4621 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4622
4623 if (i > 0)
4624 return SSL_ERROR_NONE;
4625
4626 #ifndef OPENSSL_NO_QUIC
4627 if (IS_QUIC(s)) {
4628 reason = ossl_quic_get_error(s, i);
4629 if (reason != SSL_ERROR_NONE)
4630 return reason;
4631 }
4632 #endif
4633
4634 if (sc == NULL)
4635 return SSL_ERROR_SSL;
4636
4637 /*
4638 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4639 * where we do encode the error
4640 */
4641 if (check_err && (l = ERR_peek_error()) != 0) {
4642 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4643 return SSL_ERROR_SYSCALL;
4644 else
4645 return SSL_ERROR_SSL;
4646 }
4647
4648 #ifndef OPENSSL_NO_QUIC
4649 if (!IS_QUIC(s))
4650 #endif
4651 {
4652 if (SSL_want_read(s)) {
4653 bio = SSL_get_rbio(s);
4654 if (BIO_should_read(bio))
4655 return SSL_ERROR_WANT_READ;
4656 else if (BIO_should_write(bio))
4657 /*
4658 * This one doesn't make too much sense ... We never try to
4659 * write to the rbio, and an application program where rbio and
4660 * wbio are separate couldn't even know what it should wait for.
4661 * However if we ever set s->rwstate incorrectly (so that we
4662 * have SSL_want_read(s) instead of SSL_want_write(s)) and rbio
4663 * and wbio *are* the same, this test works around that bug; so
4664 * it might be safer to keep it.
4665 */
4666 return SSL_ERROR_WANT_WRITE;
4667 else if (BIO_should_io_special(bio)) {
4668 reason = BIO_get_retry_reason(bio);
4669 if (reason == BIO_RR_CONNECT)
4670 return SSL_ERROR_WANT_CONNECT;
4671 else if (reason == BIO_RR_ACCEPT)
4672 return SSL_ERROR_WANT_ACCEPT;
4673 else
4674 return SSL_ERROR_SYSCALL; /* unknown */
4675 }
4676 }
4677
4678 if (SSL_want_write(s)) {
4679 /*
4680 * Access wbio directly - in order to use the buffered bio if
4681 * present
4682 */
4683 bio = sc->wbio;
4684 if (BIO_should_write(bio))
4685 return SSL_ERROR_WANT_WRITE;
4686 else if (BIO_should_read(bio))
4687 /*
4688 * See above (SSL_want_read(s) with BIO_should_write(bio))
4689 */
4690 return SSL_ERROR_WANT_READ;
4691 else if (BIO_should_io_special(bio)) {
4692 reason = BIO_get_retry_reason(bio);
4693 if (reason == BIO_RR_CONNECT)
4694 return SSL_ERROR_WANT_CONNECT;
4695 else if (reason == BIO_RR_ACCEPT)
4696 return SSL_ERROR_WANT_ACCEPT;
4697 else
4698 return SSL_ERROR_SYSCALL;
4699 }
4700 }
4701 }
4702
4703 if (SSL_want_x509_lookup(s))
4704 return SSL_ERROR_WANT_X509_LOOKUP;
4705 if (SSL_want_retry_verify(s))
4706 return SSL_ERROR_WANT_RETRY_VERIFY;
4707 if (SSL_want_async(s))
4708 return SSL_ERROR_WANT_ASYNC;
4709 if (SSL_want_async_job(s))
4710 return SSL_ERROR_WANT_ASYNC_JOB;
4711 if (SSL_want_client_hello_cb(s))
4712 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4713
4714 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4715 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4716 return SSL_ERROR_ZERO_RETURN;
4717
4718 return SSL_ERROR_SYSCALL;
4719 }
4720
ssl_do_handshake_intern(void * vargs)4721 static int ssl_do_handshake_intern(void *vargs)
4722 {
4723 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4724 SSL *s = args->s;
4725 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4726
4727 if (sc == NULL)
4728 return -1;
4729
4730 return sc->handshake_func(s);
4731 }
4732
SSL_do_handshake(SSL * s)4733 int SSL_do_handshake(SSL *s)
4734 {
4735 int ret = 1;
4736 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4737
4738 #ifndef OPENSSL_NO_QUIC
4739 if (IS_QUIC(s))
4740 return ossl_quic_do_handshake(s);
4741 #endif
4742
4743 if (sc->handshake_func == NULL) {
4744 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4745 return -1;
4746 }
4747
4748 ossl_statem_check_finish_init(sc, -1);
4749
4750 s->method->ssl_renegotiate_check(s, 0);
4751
4752 if (SSL_in_init(s) || SSL_in_before(s)) {
4753 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4754 struct ssl_async_args args;
4755
4756 memset(&args, 0, sizeof(args));
4757 args.s = s;
4758
4759 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4760 } else {
4761 ret = sc->handshake_func(s);
4762 }
4763 }
4764 return ret;
4765 }
4766
SSL_set_accept_state(SSL * s)4767 void SSL_set_accept_state(SSL *s)
4768 {
4769 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4770
4771 #ifndef OPENSSL_NO_QUIC
4772 if (IS_QUIC(s)) {
4773 ossl_quic_set_accept_state(s);
4774 return;
4775 }
4776 #endif
4777
4778 sc->server = 1;
4779 sc->shutdown = 0;
4780 ossl_statem_clear(sc);
4781 sc->handshake_func = s->method->ssl_accept;
4782 /* Ignore return value. Its a void public API function */
4783 RECORD_LAYER_reset(&sc->rlayer);
4784 }
4785
SSL_set_connect_state(SSL * s)4786 void SSL_set_connect_state(SSL *s)
4787 {
4788 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4789
4790 #ifndef OPENSSL_NO_QUIC
4791 if (IS_QUIC(s)) {
4792 ossl_quic_set_connect_state(s);
4793 return;
4794 }
4795 #endif
4796
4797 sc->server = 0;
4798 sc->shutdown = 0;
4799 ossl_statem_clear(sc);
4800 sc->handshake_func = s->method->ssl_connect;
4801 /* Ignore return value. Its a void public API function */
4802 RECORD_LAYER_reset(&sc->rlayer);
4803 }
4804
ssl_undefined_function(SSL * s)4805 int ssl_undefined_function(SSL *s)
4806 {
4807 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4808 return 0;
4809 }
4810
ssl_undefined_void_function(void)4811 int ssl_undefined_void_function(void)
4812 {
4813 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4814 return 0;
4815 }
4816
ssl_protocol_to_string(int version)4817 const char *ssl_protocol_to_string(int version)
4818 {
4819 switch (version) {
4820 case TLS1_3_VERSION:
4821 return "TLSv1.3";
4822
4823 case TLS1_2_VERSION:
4824 return "TLSv1.2";
4825
4826 case TLS1_1_VERSION:
4827 return "TLSv1.1";
4828
4829 case TLS1_VERSION:
4830 return "TLSv1";
4831
4832 case SSL3_VERSION:
4833 return "SSLv3";
4834
4835 case DTLS1_BAD_VER:
4836 return "DTLSv0.9";
4837
4838 case DTLS1_VERSION:
4839 return "DTLSv1";
4840
4841 case DTLS1_2_VERSION:
4842 return "DTLSv1.2";
4843
4844 default:
4845 return "unknown";
4846 }
4847 }
4848
SSL_get_version(const SSL * s)4849 const char *SSL_get_version(const SSL *s)
4850 {
4851 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4852
4853 #ifndef OPENSSL_NO_QUIC
4854 /* We only support QUICv1 - so if its QUIC its QUICv1 */
4855 if (s->type == SSL_TYPE_QUIC_CONNECTION || s->type == SSL_TYPE_QUIC_XSO)
4856 return "QUICv1";
4857 #endif
4858
4859 if (sc == NULL)
4860 return NULL;
4861
4862 return ssl_protocol_to_string(sc->version);
4863 }
4864
SSL_get_handshake_rtt(const SSL * s,uint64_t * rtt)4865 __owur int SSL_get_handshake_rtt(const SSL *s, uint64_t *rtt)
4866 {
4867 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4868
4869 if (sc == NULL)
4870 return -1;
4871 if (sc->ts_msg_write.t <= 0 || sc->ts_msg_read.t <= 0)
4872 return 0; /* data not (yet) available */
4873 if (sc->ts_msg_read.t < sc->ts_msg_write.t)
4874 return -1;
4875
4876 *rtt = ossl_time2us(ossl_time_subtract(sc->ts_msg_read, sc->ts_msg_write));
4877 return 1;
4878 }
4879
dup_ca_names(STACK_OF (X509_NAME)** dst,STACK_OF (X509_NAME)* src)4880 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4881 {
4882 STACK_OF(X509_NAME) *sk;
4883 X509_NAME *xn;
4884 int i;
4885
4886 if (src == NULL) {
4887 *dst = NULL;
4888 return 1;
4889 }
4890
4891 if ((sk = sk_X509_NAME_new_null()) == NULL)
4892 return 0;
4893 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4894 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4895 if (xn == NULL) {
4896 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4897 return 0;
4898 }
4899 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4900 X509_NAME_free(xn);
4901 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4902 return 0;
4903 }
4904 }
4905 *dst = sk;
4906
4907 return 1;
4908 }
4909
SSL_dup(SSL * s)4910 SSL *SSL_dup(SSL *s)
4911 {
4912 SSL *ret;
4913 int i;
4914 /* TODO(QUIC FUTURE): Add a SSL_METHOD function for duplication */
4915 SSL_CONNECTION *retsc;
4916 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4917
4918 if (sc == NULL)
4919 return NULL;
4920
4921 /* If we're not quiescent, just up_ref! */
4922 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4923 CRYPTO_UP_REF(&s->references, &i);
4924 return s;
4925 }
4926
4927 /*
4928 * Otherwise, copy configuration state, and session if set.
4929 */
4930 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4931 return NULL;
4932 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4933 goto err;
4934
4935 if (sc->session != NULL) {
4936 /*
4937 * Arranges to share the same session via up_ref. This "copies"
4938 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4939 */
4940 if (!SSL_copy_session_id(ret, s))
4941 goto err;
4942 } else {
4943 /*
4944 * No session has been established yet, so we have to expect that
4945 * s->cert or ret->cert will be changed later -- they should not both
4946 * point to the same object, and thus we can't use
4947 * SSL_copy_session_id.
4948 */
4949 if (!SSL_set_ssl_method(ret, s->method))
4950 goto err;
4951
4952 if (sc->cert != NULL) {
4953 ssl_cert_free(retsc->cert);
4954 retsc->cert = ssl_cert_dup(sc->cert);
4955 if (retsc->cert == NULL)
4956 goto err;
4957 }
4958
4959 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4960 (int)sc->sid_ctx_length))
4961 goto err;
4962 }
4963
4964 if (!ssl_dane_dup(retsc, sc))
4965 goto err;
4966 retsc->version = sc->version;
4967 retsc->options = sc->options;
4968 retsc->min_proto_version = sc->min_proto_version;
4969 retsc->max_proto_version = sc->max_proto_version;
4970 retsc->mode = sc->mode;
4971 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4972 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4973 retsc->msg_callback = sc->msg_callback;
4974 retsc->msg_callback_arg = sc->msg_callback_arg;
4975 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4976 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4977 retsc->generate_session_id = sc->generate_session_id;
4978
4979 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4980
4981 /* copy app data, a little dangerous perhaps */
4982 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4983 goto err;
4984
4985 retsc->server = sc->server;
4986 if (sc->handshake_func) {
4987 if (sc->server)
4988 SSL_set_accept_state(ret);
4989 else
4990 SSL_set_connect_state(ret);
4991 }
4992 retsc->shutdown = sc->shutdown;
4993 retsc->hit = sc->hit;
4994
4995 retsc->default_passwd_callback = sc->default_passwd_callback;
4996 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4997
4998 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4999
5000 /* dup the cipher_list and cipher_list_by_id stacks */
5001 if (sc->cipher_list != NULL) {
5002 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
5003 goto err;
5004 }
5005 if (sc->cipher_list_by_id != NULL)
5006 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
5007 == NULL)
5008 goto err;
5009
5010 /* Dup the client_CA list */
5011 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
5012 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
5013 goto err;
5014
5015 return ret;
5016
5017 err:
5018 SSL_free(ret);
5019 return NULL;
5020 }
5021
SSL_get_certificate(const SSL * s)5022 X509 *SSL_get_certificate(const SSL *s)
5023 {
5024 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5025
5026 if (sc == NULL)
5027 return NULL;
5028
5029 if (sc->cert != NULL)
5030 return sc->cert->key->x509;
5031 else
5032 return NULL;
5033 }
5034
SSL_get_privatekey(const SSL * s)5035 EVP_PKEY *SSL_get_privatekey(const SSL *s)
5036 {
5037 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5038
5039 if (sc == NULL)
5040 return NULL;
5041
5042 if (sc->cert != NULL)
5043 return sc->cert->key->privatekey;
5044 else
5045 return NULL;
5046 }
5047
SSL_CTX_get0_certificate(const SSL_CTX * ctx)5048 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
5049 {
5050 if (ctx->cert != NULL)
5051 return ctx->cert->key->x509;
5052 else
5053 return NULL;
5054 }
5055
SSL_CTX_get0_privatekey(const SSL_CTX * ctx)5056 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
5057 {
5058 if (ctx->cert != NULL)
5059 return ctx->cert->key->privatekey;
5060 else
5061 return NULL;
5062 }
5063
SSL_get_current_cipher(const SSL * s)5064 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
5065 {
5066 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5067
5068 if (sc == NULL)
5069 return NULL;
5070
5071 if ((sc->session != NULL) && (sc->session->cipher != NULL))
5072 return sc->session->cipher;
5073 return NULL;
5074 }
5075
SSL_get_pending_cipher(const SSL * s)5076 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
5077 {
5078 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5079
5080 if (sc == NULL)
5081 return NULL;
5082
5083 return sc->s3.tmp.new_cipher;
5084 }
5085
SSL_get_current_compression(const SSL * s)5086 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
5087 {
5088 #ifndef OPENSSL_NO_COMP
5089 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
5090
5091 if (sc == NULL)
5092 return NULL;
5093
5094 return sc->rlayer.wrlmethod->get_compression(sc->rlayer.wrl);
5095 #else
5096 return NULL;
5097 #endif
5098 }
5099
SSL_get_current_expansion(const SSL * s)5100 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
5101 {
5102 #ifndef OPENSSL_NO_COMP
5103 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
5104
5105 if (sc == NULL)
5106 return NULL;
5107
5108 return sc->rlayer.rrlmethod->get_compression(sc->rlayer.rrl);
5109 #else
5110 return NULL;
5111 #endif
5112 }
5113
ssl_init_wbio_buffer(SSL_CONNECTION * s)5114 int ssl_init_wbio_buffer(SSL_CONNECTION *s)
5115 {
5116 BIO *bbio;
5117
5118 if (s->bbio != NULL) {
5119 /* Already buffered. */
5120 return 1;
5121 }
5122
5123 bbio = BIO_new(BIO_f_buffer());
5124 if (bbio == NULL || BIO_set_read_buffer_size(bbio, 1) <= 0) {
5125 BIO_free(bbio);
5126 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
5127 return 0;
5128 }
5129 s->bbio = bbio;
5130 s->wbio = BIO_push(bbio, s->wbio);
5131
5132 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
5133
5134 return 1;
5135 }
5136
ssl_free_wbio_buffer(SSL_CONNECTION * s)5137 int ssl_free_wbio_buffer(SSL_CONNECTION *s)
5138 {
5139 /* callers ensure s is never null */
5140 if (s->bbio == NULL)
5141 return 1;
5142
5143 s->wbio = BIO_pop(s->wbio);
5144 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
5145
5146 BIO_free(s->bbio);
5147 s->bbio = NULL;
5148
5149 return 1;
5150 }
5151
SSL_CTX_set_quiet_shutdown(SSL_CTX * ctx,int mode)5152 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
5153 {
5154 ctx->quiet_shutdown = mode;
5155 }
5156
SSL_CTX_get_quiet_shutdown(const SSL_CTX * ctx)5157 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
5158 {
5159 return ctx->quiet_shutdown;
5160 }
5161
SSL_set_quiet_shutdown(SSL * s,int mode)5162 void SSL_set_quiet_shutdown(SSL *s, int mode)
5163 {
5164 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
5165
5166 /* Not supported with QUIC */
5167 if (sc == NULL)
5168 return;
5169
5170 sc->quiet_shutdown = mode;
5171 }
5172
SSL_get_quiet_shutdown(const SSL * s)5173 int SSL_get_quiet_shutdown(const SSL *s)
5174 {
5175 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
5176
5177 /* Not supported with QUIC */
5178 if (sc == NULL)
5179 return 0;
5180
5181 return sc->quiet_shutdown;
5182 }
5183
SSL_set_shutdown(SSL * s,int mode)5184 void SSL_set_shutdown(SSL *s, int mode)
5185 {
5186 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
5187
5188 /* Not supported with QUIC */
5189 if (sc == NULL)
5190 return;
5191
5192 sc->shutdown = mode;
5193 }
5194
SSL_get_shutdown(const SSL * s)5195 int SSL_get_shutdown(const SSL *s)
5196 {
5197 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
5198
5199 #ifndef OPENSSL_NO_QUIC
5200 /* QUIC: Just indicate whether the connection was shutdown cleanly. */
5201 if (IS_QUIC(s))
5202 return ossl_quic_get_shutdown(s);
5203 #endif
5204
5205 if (sc == NULL)
5206 return 0;
5207
5208 return sc->shutdown;
5209 }
5210
SSL_version(const SSL * s)5211 int SSL_version(const SSL *s)
5212 {
5213 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5214
5215 #ifndef OPENSSL_NO_QUIC
5216 /* We only support QUICv1 - so if its QUIC its QUICv1 */
5217 if (s->type == SSL_TYPE_QUIC_CONNECTION || s->type == SSL_TYPE_QUIC_XSO)
5218 return OSSL_QUIC1_VERSION;
5219 #endif
5220 if (sc == NULL)
5221 return 0;
5222
5223 return sc->version;
5224 }
5225
SSL_client_version(const SSL * s)5226 int SSL_client_version(const SSL *s)
5227 {
5228 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5229
5230 #ifndef OPENSSL_NO_QUIC
5231 /* We only support QUICv1 - so if its QUIC its QUICv1 */
5232 if (s->type == SSL_TYPE_QUIC_CONNECTION || s->type == SSL_TYPE_QUIC_XSO)
5233 return OSSL_QUIC1_VERSION;
5234 #endif
5235 if (sc == NULL)
5236 return 0;
5237
5238 return sc->client_version;
5239 }
5240
SSL_get_SSL_CTX(const SSL * ssl)5241 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
5242 {
5243 return ssl->ctx;
5244 }
5245
SSL_set_SSL_CTX(SSL * ssl,SSL_CTX * ctx)5246 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
5247 {
5248 CERT *new_cert;
5249 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
5250
5251 /* TODO(QUIC FUTURE): Add support for QUIC */
5252 if (sc == NULL)
5253 return NULL;
5254
5255 if (ssl->ctx == ctx)
5256 return ssl->ctx;
5257 if (ctx == NULL)
5258 ctx = sc->session_ctx;
5259 new_cert = ssl_cert_dup(ctx->cert);
5260 if (new_cert == NULL) {
5261 return NULL;
5262 }
5263
5264 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
5265 ssl_cert_free(new_cert);
5266 return NULL;
5267 }
5268
5269 ssl_cert_free(sc->cert);
5270 sc->cert = new_cert;
5271
5272 /*
5273 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
5274 * so setter APIs must prevent invalid lengths from entering the system.
5275 */
5276 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
5277 return NULL;
5278
5279 /*
5280 * If the session ID context matches that of the parent SSL_CTX,
5281 * inherit it from the new SSL_CTX as well. If however the context does
5282 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
5283 * leave it unchanged.
5284 */
5285 if ((ssl->ctx != NULL) &&
5286 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
5287 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
5288 sc->sid_ctx_length = ctx->sid_ctx_length;
5289 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
5290 }
5291
5292 SSL_CTX_up_ref(ctx);
5293 SSL_CTX_free(ssl->ctx); /* decrement reference count */
5294 ssl->ctx = ctx;
5295
5296 return ssl->ctx;
5297 }
5298
SSL_CTX_set_default_verify_paths(SSL_CTX * ctx)5299 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
5300 {
5301 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
5302 ctx->propq);
5303 }
5304
SSL_CTX_set_default_verify_dir(SSL_CTX * ctx)5305 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
5306 {
5307 X509_LOOKUP *lookup;
5308
5309 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
5310 if (lookup == NULL)
5311 return 0;
5312
5313 /* We ignore errors, in case the directory doesn't exist */
5314 ERR_set_mark();
5315
5316 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
5317
5318 ERR_pop_to_mark();
5319
5320 return 1;
5321 }
5322
SSL_CTX_set_default_verify_file(SSL_CTX * ctx)5323 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
5324 {
5325 X509_LOOKUP *lookup;
5326
5327 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
5328 if (lookup == NULL)
5329 return 0;
5330
5331 /* We ignore errors, in case the file doesn't exist */
5332 ERR_set_mark();
5333
5334 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
5335 ctx->propq);
5336
5337 ERR_pop_to_mark();
5338
5339 return 1;
5340 }
5341
SSL_CTX_set_default_verify_store(SSL_CTX * ctx)5342 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
5343 {
5344 X509_LOOKUP *lookup;
5345
5346 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
5347 if (lookup == NULL)
5348 return 0;
5349
5350 /* We ignore errors, in case the directory doesn't exist */
5351 ERR_set_mark();
5352
5353 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
5354
5355 ERR_pop_to_mark();
5356
5357 return 1;
5358 }
5359
SSL_CTX_load_verify_file(SSL_CTX * ctx,const char * CAfile)5360 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
5361 {
5362 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5363 ctx->propq);
5364 }
5365
SSL_CTX_load_verify_dir(SSL_CTX * ctx,const char * CApath)5366 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5367 {
5368 return X509_STORE_load_path(ctx->cert_store, CApath);
5369 }
5370
SSL_CTX_load_verify_store(SSL_CTX * ctx,const char * CAstore)5371 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5372 {
5373 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5374 ctx->propq);
5375 }
5376
SSL_CTX_load_verify_locations(SSL_CTX * ctx,const char * CAfile,const char * CApath)5377 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
5378 const char *CApath)
5379 {
5380 if (CAfile == NULL && CApath == NULL)
5381 return 0;
5382 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5383 return 0;
5384 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5385 return 0;
5386 return 1;
5387 }
5388
SSL_set_info_callback(SSL * ssl,void (* cb)(const SSL * ssl,int type,int val))5389 void SSL_set_info_callback(SSL *ssl,
5390 void (*cb) (const SSL *ssl, int type, int val))
5391 {
5392 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5393
5394 if (sc == NULL)
5395 return;
5396
5397 sc->info_callback = cb;
5398 }
5399
5400 /*
5401 * One compiler (Diab DCC) doesn't like argument names in returned function
5402 * pointer.
5403 */
SSL_get_info_callback(const SSL * ssl)5404 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5405 int /* type */ ,
5406 int /* val */ ) {
5407 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5408
5409 if (sc == NULL)
5410 return NULL;
5411
5412 return sc->info_callback;
5413 }
5414
SSL_set_verify_result(SSL * ssl,long arg)5415 void SSL_set_verify_result(SSL *ssl, long arg)
5416 {
5417 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5418
5419 if (sc == NULL)
5420 return;
5421
5422 sc->verify_result = arg;
5423 }
5424
SSL_get_verify_result(const SSL * ssl)5425 long SSL_get_verify_result(const SSL *ssl)
5426 {
5427 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5428
5429 if (sc == NULL)
5430 return 0;
5431
5432 return sc->verify_result;
5433 }
5434
SSL_get_client_random(const SSL * ssl,unsigned char * out,size_t outlen)5435 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
5436 {
5437 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5438
5439 if (sc == NULL)
5440 return 0;
5441
5442 if (outlen == 0)
5443 return sizeof(sc->s3.client_random);
5444 if (outlen > sizeof(sc->s3.client_random))
5445 outlen = sizeof(sc->s3.client_random);
5446 memcpy(out, sc->s3.client_random, outlen);
5447 return outlen;
5448 }
5449
SSL_get_server_random(const SSL * ssl,unsigned char * out,size_t outlen)5450 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
5451 {
5452 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5453
5454 if (sc == NULL)
5455 return 0;
5456
5457 if (outlen == 0)
5458 return sizeof(sc->s3.server_random);
5459 if (outlen > sizeof(sc->s3.server_random))
5460 outlen = sizeof(sc->s3.server_random);
5461 memcpy(out, sc->s3.server_random, outlen);
5462 return outlen;
5463 }
5464
SSL_SESSION_get_master_key(const SSL_SESSION * session,unsigned char * out,size_t outlen)5465 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5466 unsigned char *out, size_t outlen)
5467 {
5468 if (outlen == 0)
5469 return session->master_key_length;
5470 if (outlen > session->master_key_length)
5471 outlen = session->master_key_length;
5472 memcpy(out, session->master_key, outlen);
5473 return outlen;
5474 }
5475
SSL_SESSION_set1_master_key(SSL_SESSION * sess,const unsigned char * in,size_t len)5476 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
5477 size_t len)
5478 {
5479 if (len > sizeof(sess->master_key))
5480 return 0;
5481
5482 memcpy(sess->master_key, in, len);
5483 sess->master_key_length = len;
5484 return 1;
5485 }
5486
5487
SSL_set_ex_data(SSL * s,int idx,void * arg)5488 int SSL_set_ex_data(SSL *s, int idx, void *arg)
5489 {
5490 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5491 }
5492
SSL_get_ex_data(const SSL * s,int idx)5493 void *SSL_get_ex_data(const SSL *s, int idx)
5494 {
5495 return CRYPTO_get_ex_data(&s->ex_data, idx);
5496 }
5497
SSL_CTX_set_ex_data(SSL_CTX * s,int idx,void * arg)5498 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5499 {
5500 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5501 }
5502
SSL_CTX_get_ex_data(const SSL_CTX * s,int idx)5503 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5504 {
5505 return CRYPTO_get_ex_data(&s->ex_data, idx);
5506 }
5507
SSL_CTX_get_cert_store(const SSL_CTX * ctx)5508 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
5509 {
5510 return ctx->cert_store;
5511 }
5512
SSL_CTX_set_cert_store(SSL_CTX * ctx,X509_STORE * store)5513 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5514 {
5515 X509_STORE_free(ctx->cert_store);
5516 ctx->cert_store = store;
5517 }
5518
SSL_CTX_set1_cert_store(SSL_CTX * ctx,X509_STORE * store)5519 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5520 {
5521 if (store != NULL)
5522 X509_STORE_up_ref(store);
5523 SSL_CTX_set_cert_store(ctx, store);
5524 }
5525
SSL_want(const SSL * s)5526 int SSL_want(const SSL *s)
5527 {
5528 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5529
5530 #ifndef OPENSSL_NO_QUIC
5531 if (IS_QUIC(s))
5532 return ossl_quic_want(s);
5533 #endif
5534
5535 if (sc == NULL)
5536 return SSL_NOTHING;
5537
5538 return sc->rwstate;
5539 }
5540
5541 #ifndef OPENSSL_NO_PSK
SSL_CTX_use_psk_identity_hint(SSL_CTX * ctx,const char * identity_hint)5542 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
5543 {
5544 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5545 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5546 return 0;
5547 }
5548 OPENSSL_free(ctx->cert->psk_identity_hint);
5549 if (identity_hint != NULL) {
5550 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5551 if (ctx->cert->psk_identity_hint == NULL)
5552 return 0;
5553 } else
5554 ctx->cert->psk_identity_hint = NULL;
5555 return 1;
5556 }
5557
SSL_use_psk_identity_hint(SSL * s,const char * identity_hint)5558 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
5559 {
5560 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5561
5562 if (sc == NULL)
5563 return 0;
5564
5565 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5566 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5567 return 0;
5568 }
5569 OPENSSL_free(sc->cert->psk_identity_hint);
5570 if (identity_hint != NULL) {
5571 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5572 if (sc->cert->psk_identity_hint == NULL)
5573 return 0;
5574 } else
5575 sc->cert->psk_identity_hint = NULL;
5576 return 1;
5577 }
5578
SSL_get_psk_identity_hint(const SSL * s)5579 const char *SSL_get_psk_identity_hint(const SSL *s)
5580 {
5581 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5582
5583 if (sc == NULL || sc->session == NULL)
5584 return NULL;
5585
5586 return sc->session->psk_identity_hint;
5587 }
5588
SSL_get_psk_identity(const SSL * s)5589 const char *SSL_get_psk_identity(const SSL *s)
5590 {
5591 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5592
5593 if (sc == NULL || sc->session == NULL)
5594 return NULL;
5595
5596 return sc->session->psk_identity;
5597 }
5598
SSL_set_psk_client_callback(SSL * s,SSL_psk_client_cb_func cb)5599 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5600 {
5601 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5602
5603 if (sc == NULL)
5604 return;
5605
5606 sc->psk_client_callback = cb;
5607 }
5608
SSL_CTX_set_psk_client_callback(SSL_CTX * ctx,SSL_psk_client_cb_func cb)5609 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5610 {
5611 ctx->psk_client_callback = cb;
5612 }
5613
SSL_set_psk_server_callback(SSL * s,SSL_psk_server_cb_func cb)5614 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5615 {
5616 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5617
5618 if (sc == NULL)
5619 return;
5620
5621 sc->psk_server_callback = cb;
5622 }
5623
SSL_CTX_set_psk_server_callback(SSL_CTX * ctx,SSL_psk_server_cb_func cb)5624 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5625 {
5626 ctx->psk_server_callback = cb;
5627 }
5628 #endif
5629
SSL_set_psk_find_session_callback(SSL * s,SSL_psk_find_session_cb_func cb)5630 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5631 {
5632 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5633
5634 if (sc == NULL)
5635 return;
5636
5637 sc->psk_find_session_cb = cb;
5638 }
5639
SSL_CTX_set_psk_find_session_callback(SSL_CTX * ctx,SSL_psk_find_session_cb_func cb)5640 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5641 SSL_psk_find_session_cb_func cb)
5642 {
5643 ctx->psk_find_session_cb = cb;
5644 }
5645
SSL_set_psk_use_session_callback(SSL * s,SSL_psk_use_session_cb_func cb)5646 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5647 {
5648 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5649
5650 if (sc == NULL)
5651 return;
5652
5653 sc->psk_use_session_cb = cb;
5654 }
5655
SSL_CTX_set_psk_use_session_callback(SSL_CTX * ctx,SSL_psk_use_session_cb_func cb)5656 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5657 SSL_psk_use_session_cb_func cb)
5658 {
5659 ctx->psk_use_session_cb = cb;
5660 }
5661
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))5662 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5663 void (*cb) (int write_p, int version,
5664 int content_type, const void *buf,
5665 size_t len, SSL *ssl, void *arg))
5666 {
5667 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5668 }
5669
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))5670 void SSL_set_msg_callback(SSL *ssl,
5671 void (*cb) (int write_p, int version,
5672 int content_type, const void *buf,
5673 size_t len, SSL *ssl, void *arg))
5674 {
5675 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5676 }
5677
SSL_CTX_set_not_resumable_session_callback(SSL_CTX * ctx,int (* cb)(SSL * ssl,int is_forward_secure))5678 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5679 int (*cb) (SSL *ssl,
5680 int
5681 is_forward_secure))
5682 {
5683 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5684 (void (*)(void))cb);
5685 }
5686
SSL_set_not_resumable_session_callback(SSL * ssl,int (* cb)(SSL * ssl,int is_forward_secure))5687 void SSL_set_not_resumable_session_callback(SSL *ssl,
5688 int (*cb) (SSL *ssl,
5689 int is_forward_secure))
5690 {
5691 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5692 (void (*)(void))cb);
5693 }
5694
SSL_CTX_set_record_padding_callback(SSL_CTX * ctx,size_t (* cb)(SSL * ssl,int type,size_t len,void * arg))5695 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5696 size_t (*cb) (SSL *ssl, int type,
5697 size_t len, void *arg))
5698 {
5699 ctx->record_padding_cb = cb;
5700 }
5701
SSL_CTX_set_record_padding_callback_arg(SSL_CTX * ctx,void * arg)5702 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5703 {
5704 ctx->record_padding_arg = arg;
5705 }
5706
SSL_CTX_get_record_padding_callback_arg(const SSL_CTX * ctx)5707 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
5708 {
5709 return ctx->record_padding_arg;
5710 }
5711
SSL_CTX_set_block_padding_ex(SSL_CTX * ctx,size_t app_block_size,size_t hs_block_size)5712 int SSL_CTX_set_block_padding_ex(SSL_CTX *ctx, size_t app_block_size,
5713 size_t hs_block_size)
5714 {
5715 if (IS_QUIC_CTX(ctx) && (app_block_size > 1 || hs_block_size > 1))
5716 return 0;
5717
5718 /* block size of 0 or 1 is basically no padding */
5719 if (app_block_size == 1) {
5720 ctx->block_padding = 0;
5721 } else if (app_block_size <= SSL3_RT_MAX_PLAIN_LENGTH) {
5722 ctx->block_padding = app_block_size;
5723 } else {
5724 return 0;
5725 }
5726 if (hs_block_size == 1) {
5727 ctx->hs_padding = 0;
5728 } else if (hs_block_size <= SSL3_RT_MAX_PLAIN_LENGTH) {
5729 ctx->hs_padding = hs_block_size;
5730 } else {
5731 return 0;
5732 }
5733 return 1;
5734 }
5735
SSL_CTX_set_block_padding(SSL_CTX * ctx,size_t block_size)5736 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5737 {
5738 return SSL_CTX_set_block_padding_ex(ctx, block_size, block_size);
5739 }
5740
SSL_set_record_padding_callback(SSL * ssl,size_t (* cb)(SSL * ssl,int type,size_t len,void * arg))5741 int SSL_set_record_padding_callback(SSL *ssl,
5742 size_t (*cb) (SSL *ssl, int type,
5743 size_t len, void *arg))
5744 {
5745 BIO *b;
5746 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
5747
5748 if (sc == NULL)
5749 return 0;
5750
5751 b = SSL_get_wbio(ssl);
5752 if (b == NULL || !BIO_get_ktls_send(b)) {
5753 sc->rlayer.record_padding_cb = cb;
5754 return 1;
5755 }
5756 return 0;
5757 }
5758
SSL_set_record_padding_callback_arg(SSL * ssl,void * arg)5759 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5760 {
5761 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5762
5763 if (sc == NULL)
5764 return;
5765
5766 sc->rlayer.record_padding_arg = arg;
5767 }
5768
SSL_get_record_padding_callback_arg(const SSL * ssl)5769 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
5770 {
5771 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5772
5773 if (sc == NULL)
5774 return NULL;
5775
5776 return sc->rlayer.record_padding_arg;
5777 }
5778
SSL_set_block_padding_ex(SSL * ssl,size_t app_block_size,size_t hs_block_size)5779 int SSL_set_block_padding_ex(SSL *ssl, size_t app_block_size,
5780 size_t hs_block_size)
5781 {
5782 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5783
5784 if (sc == NULL
5785 || (IS_QUIC(ssl)
5786 && (app_block_size > 1 || hs_block_size > 1)))
5787 return 0;
5788
5789 /* block size of 0 or 1 is basically no padding */
5790 if (app_block_size == 1) {
5791 sc->rlayer.block_padding = 0;
5792 } else if (app_block_size <= SSL3_RT_MAX_PLAIN_LENGTH) {
5793 sc->rlayer.block_padding = app_block_size;
5794 } else {
5795 return 0;
5796 }
5797 if (hs_block_size == 1) {
5798 sc->rlayer.hs_padding = 0;
5799 } else if (hs_block_size <= SSL3_RT_MAX_PLAIN_LENGTH) {
5800 sc->rlayer.hs_padding = hs_block_size;
5801 } else {
5802 return 0;
5803 }
5804 return 1;
5805 }
5806
SSL_set_block_padding(SSL * ssl,size_t block_size)5807 int SSL_set_block_padding(SSL *ssl, size_t block_size)
5808 {
5809 return SSL_set_block_padding_ex(ssl, block_size, block_size);
5810 }
5811
SSL_set_num_tickets(SSL * s,size_t num_tickets)5812 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5813 {
5814 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5815
5816 if (sc == NULL)
5817 return 0;
5818
5819 sc->num_tickets = num_tickets;
5820
5821 return 1;
5822 }
5823
SSL_get_num_tickets(const SSL * s)5824 size_t SSL_get_num_tickets(const SSL *s)
5825 {
5826 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5827
5828 if (sc == NULL)
5829 return 0;
5830
5831 return sc->num_tickets;
5832 }
5833
SSL_CTX_set_num_tickets(SSL_CTX * ctx,size_t num_tickets)5834 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5835 {
5836 ctx->num_tickets = num_tickets;
5837
5838 return 1;
5839 }
5840
SSL_CTX_get_num_tickets(const SSL_CTX * ctx)5841 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5842 {
5843 return ctx->num_tickets;
5844 }
5845
5846 /* Retrieve handshake hashes */
ssl_handshake_hash(SSL_CONNECTION * s,unsigned char * out,size_t outlen,size_t * hashlen)5847 int ssl_handshake_hash(SSL_CONNECTION *s,
5848 unsigned char *out, size_t outlen,
5849 size_t *hashlen)
5850 {
5851 EVP_MD_CTX *ctx = NULL;
5852 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5853 int hashleni = EVP_MD_CTX_get_size(hdgst);
5854 int ret = 0;
5855
5856 if (hashleni < 0 || (size_t)hashleni > outlen) {
5857 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5858 goto err;
5859 }
5860
5861 ctx = EVP_MD_CTX_new();
5862 if (ctx == NULL) {
5863 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5864 goto err;
5865 }
5866
5867 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5868 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5869 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5870 goto err;
5871 }
5872
5873 *hashlen = hashleni;
5874
5875 ret = 1;
5876 err:
5877 EVP_MD_CTX_free(ctx);
5878 return ret;
5879 }
5880
SSL_session_reused(const SSL * s)5881 int SSL_session_reused(const SSL *s)
5882 {
5883 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5884
5885 if (sc == NULL)
5886 return 0;
5887
5888 return sc->hit;
5889 }
5890
SSL_is_server(const SSL * s)5891 int SSL_is_server(const SSL *s)
5892 {
5893 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5894
5895 if (sc == NULL)
5896 return 0;
5897
5898 return sc->server;
5899 }
5900
5901 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
SSL_set_debug(SSL * s,int debug)5902 void SSL_set_debug(SSL *s, int debug)
5903 {
5904 /* Old function was do-nothing anyway... */
5905 (void)s;
5906 (void)debug;
5907 }
5908 #endif
5909
SSL_set_security_level(SSL * s,int level)5910 void SSL_set_security_level(SSL *s, int level)
5911 {
5912 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5913
5914 if (sc == NULL)
5915 return;
5916
5917 sc->cert->sec_level = level;
5918 }
5919
SSL_get_security_level(const SSL * s)5920 int SSL_get_security_level(const SSL *s)
5921 {
5922 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5923
5924 if (sc == NULL)
5925 return 0;
5926
5927 return sc->cert->sec_level;
5928 }
5929
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))5930 void SSL_set_security_callback(SSL *s,
5931 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5932 int op, int bits, int nid,
5933 void *other, void *ex))
5934 {
5935 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5936
5937 if (sc == NULL)
5938 return;
5939
5940 sc->cert->sec_cb = cb;
5941 }
5942
SSL_get_security_callback(const SSL * s)5943 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5944 const SSL_CTX *ctx, int op,
5945 int bits, int nid, void *other,
5946 void *ex) {
5947 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5948
5949 if (sc == NULL)
5950 return NULL;
5951
5952 return sc->cert->sec_cb;
5953 }
5954
SSL_set0_security_ex_data(SSL * s,void * ex)5955 void SSL_set0_security_ex_data(SSL *s, void *ex)
5956 {
5957 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5958
5959 if (sc == NULL)
5960 return;
5961
5962 sc->cert->sec_ex = ex;
5963 }
5964
SSL_get0_security_ex_data(const SSL * s)5965 void *SSL_get0_security_ex_data(const SSL *s)
5966 {
5967 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5968
5969 if (sc == NULL)
5970 return NULL;
5971
5972 return sc->cert->sec_ex;
5973 }
5974
SSL_CTX_set_security_level(SSL_CTX * ctx,int level)5975 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5976 {
5977 ctx->cert->sec_level = level;
5978 }
5979
SSL_CTX_get_security_level(const SSL_CTX * ctx)5980 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5981 {
5982 return ctx->cert->sec_level;
5983 }
5984
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))5985 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5986 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5987 int op, int bits, int nid,
5988 void *other, void *ex))
5989 {
5990 ctx->cert->sec_cb = cb;
5991 }
5992
SSL_CTX_get_security_callback(const SSL_CTX * ctx)5993 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5994 const SSL_CTX *ctx,
5995 int op, int bits,
5996 int nid,
5997 void *other,
5998 void *ex) {
5999 return ctx->cert->sec_cb;
6000 }
6001
SSL_CTX_set0_security_ex_data(SSL_CTX * ctx,void * ex)6002 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
6003 {
6004 ctx->cert->sec_ex = ex;
6005 }
6006
SSL_CTX_get0_security_ex_data(const SSL_CTX * ctx)6007 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
6008 {
6009 return ctx->cert->sec_ex;
6010 }
6011
SSL_CTX_get_options(const SSL_CTX * ctx)6012 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
6013 {
6014 return ctx->options;
6015 }
6016
SSL_get_options(const SSL * s)6017 uint64_t SSL_get_options(const SSL *s)
6018 {
6019 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6020
6021 #ifndef OPENSSL_NO_QUIC
6022 if (IS_QUIC(s))
6023 return ossl_quic_get_options(s);
6024 #endif
6025
6026 if (sc == NULL)
6027 return 0;
6028
6029 return sc->options;
6030 }
6031
SSL_CTX_set_options(SSL_CTX * ctx,uint64_t op)6032 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
6033 {
6034 return ctx->options |= op;
6035 }
6036
SSL_set_options(SSL * s,uint64_t op)6037 uint64_t SSL_set_options(SSL *s, uint64_t op)
6038 {
6039 SSL_CONNECTION *sc;
6040 OSSL_PARAM options[2], *opts = options;
6041
6042 #ifndef OPENSSL_NO_QUIC
6043 if (IS_QUIC(s))
6044 return ossl_quic_set_options(s, op);
6045 #endif
6046
6047 sc = SSL_CONNECTION_FROM_SSL(s);
6048 if (sc == NULL)
6049 return 0;
6050
6051 sc->options |= op;
6052
6053 *opts++ = OSSL_PARAM_construct_uint64(OSSL_LIBSSL_RECORD_LAYER_PARAM_OPTIONS,
6054 &sc->options);
6055 *opts = OSSL_PARAM_construct_end();
6056
6057 /* Ignore return value */
6058 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
6059 sc->rlayer.wrlmethod->set_options(sc->rlayer.wrl, options);
6060
6061 return sc->options;
6062 }
6063
SSL_CTX_clear_options(SSL_CTX * ctx,uint64_t op)6064 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
6065 {
6066 return ctx->options &= ~op;
6067 }
6068
SSL_clear_options(SSL * s,uint64_t op)6069 uint64_t SSL_clear_options(SSL *s, uint64_t op)
6070 {
6071 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6072 OSSL_PARAM options[2], *opts = options;
6073
6074 #ifndef OPENSSL_NO_QUIC
6075 if (IS_QUIC(s))
6076 return ossl_quic_clear_options(s, op);
6077 #endif
6078
6079 if (sc == NULL)
6080 return 0;
6081
6082 sc->options &= ~op;
6083
6084 *opts++ = OSSL_PARAM_construct_uint64(OSSL_LIBSSL_RECORD_LAYER_PARAM_OPTIONS,
6085 &sc->options);
6086 *opts = OSSL_PARAM_construct_end();
6087
6088 /* Ignore return value */
6089 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
6090 sc->rlayer.wrlmethod->set_options(sc->rlayer.wrl, options);
6091
6092 return sc->options;
6093 }
6094
STACK_OF(X509)6095 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
6096 {
6097 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6098
6099 if (sc == NULL)
6100 return NULL;
6101
6102 return sc->verified_chain;
6103 }
6104
6105 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
6106
6107 #ifndef OPENSSL_NO_CT
6108
6109 /*
6110 * Moves SCTs from the |src| stack to the |dst| stack.
6111 * The source of each SCT will be set to |origin|.
6112 * If |dst| points to a NULL pointer, a new stack will be created and owned by
6113 * the caller.
6114 * Returns the number of SCTs moved, or a negative integer if an error occurs.
6115 * The |dst| stack is created and possibly partially populated even in case
6116 * of error, likewise the |src| stack may be left in an intermediate state.
6117 */
ct_move_scts(STACK_OF (SCT)** dst,STACK_OF (SCT)* src,sct_source_t origin)6118 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
6119 sct_source_t origin)
6120 {
6121 int scts_moved = 0;
6122 SCT *sct = NULL;
6123
6124 if (*dst == NULL) {
6125 *dst = sk_SCT_new_null();
6126 if (*dst == NULL) {
6127 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6128 goto err;
6129 }
6130 }
6131
6132 while ((sct = sk_SCT_pop(src)) != NULL) {
6133 if (SCT_set_source(sct, origin) != 1)
6134 goto err;
6135
6136 if (!sk_SCT_push(*dst, sct))
6137 goto err;
6138 scts_moved += 1;
6139 }
6140
6141 return scts_moved;
6142 err:
6143 SCT_free(sct);
6144 return -1;
6145 }
6146
6147 /*
6148 * Look for data collected during ServerHello and parse if found.
6149 * Returns the number of SCTs extracted.
6150 */
ct_extract_tls_extension_scts(SSL_CONNECTION * s)6151 static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
6152 {
6153 int scts_extracted = 0;
6154
6155 if (s->ext.scts != NULL) {
6156 const unsigned char *p = s->ext.scts;
6157 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
6158
6159 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
6160
6161 SCT_LIST_free(scts);
6162 }
6163
6164 return scts_extracted;
6165 }
6166
6167 /*
6168 * Checks for an OCSP response and then attempts to extract any SCTs found if it
6169 * contains an SCT X509 extension. They will be stored in |s->scts|.
6170 * Returns:
6171 * - The number of SCTs extracted, assuming an OCSP response exists.
6172 * - 0 if no OCSP response exists or it contains no SCTs.
6173 * - A negative integer if an error occurs.
6174 */
ct_extract_ocsp_response_scts(SSL_CONNECTION * s)6175 static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
6176 {
6177 # ifndef OPENSSL_NO_OCSP
6178 int scts_extracted = 0;
6179 const unsigned char *p;
6180 OCSP_BASICRESP *br = NULL;
6181 OCSP_RESPONSE *rsp = NULL;
6182 STACK_OF(SCT) *scts = NULL;
6183 int i;
6184
6185 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
6186 goto err;
6187
6188 p = s->ext.ocsp.resp;
6189 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
6190 if (rsp == NULL)
6191 goto err;
6192
6193 br = OCSP_response_get1_basic(rsp);
6194 if (br == NULL)
6195 goto err;
6196
6197 for (i = 0; i < OCSP_resp_count(br); ++i) {
6198 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
6199
6200 if (single == NULL)
6201 continue;
6202
6203 scts =
6204 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
6205 scts_extracted =
6206 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
6207 if (scts_extracted < 0)
6208 goto err;
6209 }
6210 err:
6211 SCT_LIST_free(scts);
6212 OCSP_BASICRESP_free(br);
6213 OCSP_RESPONSE_free(rsp);
6214 return scts_extracted;
6215 # else
6216 /* Behave as if no OCSP response exists */
6217 return 0;
6218 # endif
6219 }
6220
6221 /*
6222 * Attempts to extract SCTs from the peer certificate.
6223 * Return the number of SCTs extracted, or a negative integer if an error
6224 * occurs.
6225 */
ct_extract_x509v3_extension_scts(SSL_CONNECTION * s)6226 static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
6227 {
6228 int scts_extracted = 0;
6229 X509 *cert = s->session != NULL ? s->session->peer : NULL;
6230
6231 if (cert != NULL) {
6232 STACK_OF(SCT) *scts =
6233 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
6234
6235 scts_extracted =
6236 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
6237
6238 SCT_LIST_free(scts);
6239 }
6240
6241 return scts_extracted;
6242 }
6243
6244 /*
6245 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
6246 * response (if it exists) and X509v3 extensions in the certificate.
6247 * Returns NULL if an error occurs.
6248 */
STACK_OF(SCT)6249 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
6250 {
6251 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6252
6253 if (sc == NULL)
6254 return NULL;
6255
6256 if (!sc->scts_parsed) {
6257 if (ct_extract_tls_extension_scts(sc) < 0 ||
6258 ct_extract_ocsp_response_scts(sc) < 0 ||
6259 ct_extract_x509v3_extension_scts(sc) < 0)
6260 goto err;
6261
6262 sc->scts_parsed = 1;
6263 }
6264 return sc->scts;
6265 err:
6266 return NULL;
6267 }
6268
ct_permissive(const CT_POLICY_EVAL_CTX * ctx,const STACK_OF (SCT)* scts,void * unused_arg)6269 static int ct_permissive(const CT_POLICY_EVAL_CTX *ctx,
6270 const STACK_OF(SCT) *scts, void *unused_arg)
6271 {
6272 return 1;
6273 }
6274
ct_strict(const CT_POLICY_EVAL_CTX * ctx,const STACK_OF (SCT)* scts,void * unused_arg)6275 static int ct_strict(const CT_POLICY_EVAL_CTX *ctx,
6276 const STACK_OF(SCT) *scts, void *unused_arg)
6277 {
6278 int count = scts != NULL ? sk_SCT_num(scts) : 0;
6279 int i;
6280
6281 for (i = 0; i < count; ++i) {
6282 SCT *sct = sk_SCT_value(scts, i);
6283 int status = SCT_get_validation_status(sct);
6284
6285 if (status == SCT_VALIDATION_STATUS_VALID)
6286 return 1;
6287 }
6288 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
6289 return 0;
6290 }
6291
SSL_set_ct_validation_callback(SSL * s,ssl_ct_validation_cb callback,void * arg)6292 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
6293 void *arg)
6294 {
6295 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6296
6297 if (sc == NULL)
6298 return 0;
6299
6300 /*
6301 * Since code exists that uses the custom extension handler for CT, look
6302 * for this and throw an error if they have already registered to use CT.
6303 */
6304 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
6305 TLSEXT_TYPE_signed_certificate_timestamp))
6306 {
6307 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
6308 return 0;
6309 }
6310
6311 if (callback != NULL) {
6312 /*
6313 * If we are validating CT, then we MUST accept SCTs served via OCSP
6314 */
6315 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
6316 return 0;
6317 }
6318
6319 sc->ct_validation_callback = callback;
6320 sc->ct_validation_callback_arg = arg;
6321
6322 return 1;
6323 }
6324
SSL_CTX_set_ct_validation_callback(SSL_CTX * ctx,ssl_ct_validation_cb callback,void * arg)6325 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
6326 ssl_ct_validation_cb callback, void *arg)
6327 {
6328 /*
6329 * Since code exists that uses the custom extension handler for CT, look for
6330 * this and throw an error if they have already registered to use CT.
6331 */
6332 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
6333 TLSEXT_TYPE_signed_certificate_timestamp))
6334 {
6335 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
6336 return 0;
6337 }
6338
6339 ctx->ct_validation_callback = callback;
6340 ctx->ct_validation_callback_arg = arg;
6341 return 1;
6342 }
6343
SSL_ct_is_enabled(const SSL * s)6344 int SSL_ct_is_enabled(const SSL *s)
6345 {
6346 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6347
6348 if (sc == NULL)
6349 return 0;
6350
6351 return sc->ct_validation_callback != NULL;
6352 }
6353
SSL_CTX_ct_is_enabled(const SSL_CTX * ctx)6354 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
6355 {
6356 return ctx->ct_validation_callback != NULL;
6357 }
6358
ssl_validate_ct(SSL_CONNECTION * s)6359 int ssl_validate_ct(SSL_CONNECTION *s)
6360 {
6361 int ret = 0;
6362 X509 *cert = s->session != NULL ? s->session->peer : NULL;
6363 X509 *issuer;
6364 SSL_DANE *dane = &s->dane;
6365 CT_POLICY_EVAL_CTX *ctx = NULL;
6366 const STACK_OF(SCT) *scts;
6367
6368 /*
6369 * If no callback is set, the peer is anonymous, or its chain is invalid,
6370 * skip SCT validation - just return success. Applications that continue
6371 * handshakes without certificates, with unverified chains, or pinned leaf
6372 * certificates are outside the scope of the WebPKI and CT.
6373 *
6374 * The above exclusions notwithstanding the vast majority of peers will
6375 * have rather ordinary certificate chains validated by typical
6376 * applications that perform certificate verification and therefore will
6377 * process SCTs when enabled.
6378 */
6379 if (s->ct_validation_callback == NULL || cert == NULL ||
6380 s->verify_result != X509_V_OK ||
6381 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
6382 return 1;
6383
6384 /*
6385 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
6386 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
6387 */
6388 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
6389 switch (dane->mtlsa->usage) {
6390 case DANETLS_USAGE_DANE_TA:
6391 case DANETLS_USAGE_DANE_EE:
6392 return 1;
6393 }
6394 }
6395
6396 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
6397 SSL_CONNECTION_GET_CTX(s)->propq);
6398 if (ctx == NULL) {
6399 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CT_LIB);
6400 goto end;
6401 }
6402
6403 issuer = sk_X509_value(s->verified_chain, 1);
6404 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
6405 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
6406 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
6407 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
6408 CT_POLICY_EVAL_CTX_set_time(
6409 ctx, (uint64_t)SSL_SESSION_get_time_ex(s->session) * 1000);
6410
6411 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
6412
6413 /*
6414 * This function returns success (> 0) only when all the SCTs are valid, 0
6415 * when some are invalid, and < 0 on various internal errors (out of
6416 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6417 * reason to abort the handshake, that decision is up to the callback.
6418 * Therefore, we error out only in the unexpected case that the return
6419 * value is negative.
6420 *
6421 * XXX: One might well argue that the return value of this function is an
6422 * unfortunate design choice. Its job is only to determine the validation
6423 * status of each of the provided SCTs. So long as it correctly separates
6424 * the wheat from the chaff it should return success. Failure in this case
6425 * ought to correspond to an inability to carry out its duties.
6426 */
6427 if (SCT_LIST_validate(scts, ctx) < 0) {
6428 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6429 goto end;
6430 }
6431
6432 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6433 if (ret < 0)
6434 ret = 0; /* This function returns 0 on failure */
6435 if (!ret)
6436 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6437
6438 end:
6439 CT_POLICY_EVAL_CTX_free(ctx);
6440 /*
6441 * With SSL_VERIFY_NONE the session may be cached and reused despite a
6442 * failure return code here. Also the application may wish the complete
6443 * the handshake, and then disconnect cleanly at a higher layer, after
6444 * checking the verification status of the completed connection.
6445 *
6446 * We therefore force a certificate verification failure which will be
6447 * visible via SSL_get_verify_result() and cached as part of any resumed
6448 * session.
6449 *
6450 * Note: the permissive callback is for information gathering only, always
6451 * returns success, and does not affect verification status. Only the
6452 * strict callback or a custom application-specified callback can trigger
6453 * connection failure or record a verification error.
6454 */
6455 if (ret <= 0)
6456 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6457 return ret;
6458 }
6459
SSL_CTX_enable_ct(SSL_CTX * ctx,int validation_mode)6460 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6461 {
6462 switch (validation_mode) {
6463 default:
6464 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6465 return 0;
6466 case SSL_CT_VALIDATION_PERMISSIVE:
6467 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6468 case SSL_CT_VALIDATION_STRICT:
6469 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6470 }
6471 }
6472
SSL_enable_ct(SSL * s,int validation_mode)6473 int SSL_enable_ct(SSL *s, int validation_mode)
6474 {
6475 switch (validation_mode) {
6476 default:
6477 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6478 return 0;
6479 case SSL_CT_VALIDATION_PERMISSIVE:
6480 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6481 case SSL_CT_VALIDATION_STRICT:
6482 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6483 }
6484 }
6485
SSL_CTX_set_default_ctlog_list_file(SSL_CTX * ctx)6486 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6487 {
6488 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6489 }
6490
SSL_CTX_set_ctlog_list_file(SSL_CTX * ctx,const char * path)6491 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6492 {
6493 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6494 }
6495
SSL_CTX_set0_ctlog_store(SSL_CTX * ctx,CTLOG_STORE * logs)6496 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE *logs)
6497 {
6498 CTLOG_STORE_free(ctx->ctlog_store);
6499 ctx->ctlog_store = logs;
6500 }
6501
SSL_CTX_get0_ctlog_store(const SSL_CTX * ctx)6502 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6503 {
6504 return ctx->ctlog_store;
6505 }
6506
6507 #endif /* OPENSSL_NO_CT */
6508
SSL_CTX_set_client_hello_cb(SSL_CTX * c,SSL_client_hello_cb_fn cb,void * arg)6509 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6510 void *arg)
6511 {
6512 c->client_hello_cb = cb;
6513 c->client_hello_cb_arg = arg;
6514 }
6515
SSL_client_hello_isv2(SSL * s)6516 int SSL_client_hello_isv2(SSL *s)
6517 {
6518 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6519
6520 if (sc == NULL)
6521 return 0;
6522
6523 if (sc->clienthello == NULL)
6524 return 0;
6525 return sc->clienthello->isv2;
6526 }
6527
SSL_client_hello_get0_legacy_version(SSL * s)6528 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6529 {
6530 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6531
6532 if (sc == NULL)
6533 return 0;
6534
6535 if (sc->clienthello == NULL)
6536 return 0;
6537 return sc->clienthello->legacy_version;
6538 }
6539
SSL_client_hello_get0_random(SSL * s,const unsigned char ** out)6540 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6541 {
6542 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6543
6544 if (sc == NULL)
6545 return 0;
6546
6547 if (sc->clienthello == NULL)
6548 return 0;
6549 if (out != NULL)
6550 *out = sc->clienthello->random;
6551 return SSL3_RANDOM_SIZE;
6552 }
6553
SSL_client_hello_get0_session_id(SSL * s,const unsigned char ** out)6554 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6555 {
6556 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6557
6558 if (sc == NULL)
6559 return 0;
6560
6561 if (sc->clienthello == NULL)
6562 return 0;
6563 if (out != NULL)
6564 *out = sc->clienthello->session_id;
6565 return sc->clienthello->session_id_len;
6566 }
6567
SSL_client_hello_get0_ciphers(SSL * s,const unsigned char ** out)6568 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6569 {
6570 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6571
6572 if (sc == NULL)
6573 return 0;
6574
6575 if (sc->clienthello == NULL)
6576 return 0;
6577 if (out != NULL)
6578 *out = PACKET_data(&sc->clienthello->ciphersuites);
6579 return PACKET_remaining(&sc->clienthello->ciphersuites);
6580 }
6581
SSL_client_hello_get0_compression_methods(SSL * s,const unsigned char ** out)6582 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6583 {
6584 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6585
6586 if (sc == NULL)
6587 return 0;
6588
6589 if (sc->clienthello == NULL)
6590 return 0;
6591 if (out != NULL)
6592 *out = sc->clienthello->compressions;
6593 return sc->clienthello->compressions_len;
6594 }
6595
SSL_client_hello_get1_extensions_present(SSL * s,int ** out,size_t * outlen)6596 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
6597 {
6598 RAW_EXTENSION *ext;
6599 int *present;
6600 size_t num = 0, i;
6601 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6602
6603 if (sc == NULL)
6604 return 0;
6605
6606 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6607 return 0;
6608 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6609 ext = sc->clienthello->pre_proc_exts + i;
6610 if (ext->present)
6611 num++;
6612 }
6613 if (num == 0) {
6614 *out = NULL;
6615 *outlen = 0;
6616 return 1;
6617 }
6618 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL)
6619 return 0;
6620 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6621 ext = sc->clienthello->pre_proc_exts + i;
6622 if (ext->present) {
6623 if (ext->received_order >= num)
6624 goto err;
6625 present[ext->received_order] = ext->type;
6626 }
6627 }
6628 *out = present;
6629 *outlen = num;
6630 return 1;
6631 err:
6632 OPENSSL_free(present);
6633 return 0;
6634 }
6635
SSL_client_hello_get_extension_order(SSL * s,uint16_t * exts,size_t * num_exts)6636 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6637 {
6638 RAW_EXTENSION *ext;
6639 size_t num = 0, i;
6640 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6641
6642 if (sc == NULL)
6643 return 0;
6644
6645 if (sc->clienthello == NULL || num_exts == NULL)
6646 return 0;
6647 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6648 ext = sc->clienthello->pre_proc_exts + i;
6649 if (ext->present)
6650 num++;
6651 }
6652 if (num == 0) {
6653 *num_exts = 0;
6654 return 1;
6655 }
6656 if (exts == NULL) {
6657 *num_exts = num;
6658 return 1;
6659 }
6660 if (*num_exts < num)
6661 return 0;
6662 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6663 ext = sc->clienthello->pre_proc_exts + i;
6664 if (ext->present) {
6665 if (ext->received_order >= num)
6666 return 0;
6667 exts[ext->received_order] = ext->type;
6668 }
6669 }
6670 *num_exts = num;
6671 return 1;
6672 }
6673
SSL_client_hello_get0_ext(SSL * s,unsigned int type,const unsigned char ** out,size_t * outlen)6674 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6675 size_t *outlen)
6676 {
6677 size_t i;
6678 RAW_EXTENSION *r;
6679 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6680
6681 if (sc == NULL)
6682 return 0;
6683
6684 if (sc->clienthello == NULL)
6685 return 0;
6686 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6687 r = sc->clienthello->pre_proc_exts + i;
6688 if (r->present && r->type == type) {
6689 if (out != NULL)
6690 *out = PACKET_data(&r->data);
6691 if (outlen != NULL)
6692 *outlen = PACKET_remaining(&r->data);
6693 return 1;
6694 }
6695 }
6696 return 0;
6697 }
6698
SSL_free_buffers(SSL * ssl)6699 int SSL_free_buffers(SSL *ssl)
6700 {
6701 RECORD_LAYER *rl;
6702 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
6703
6704 if (sc == NULL)
6705 return 0;
6706
6707 rl = &sc->rlayer;
6708
6709 return rl->rrlmethod->free_buffers(rl->rrl)
6710 && rl->wrlmethod->free_buffers(rl->wrl);
6711 }
6712
SSL_alloc_buffers(SSL * ssl)6713 int SSL_alloc_buffers(SSL *ssl)
6714 {
6715 RECORD_LAYER *rl;
6716 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6717
6718 if (sc == NULL)
6719 return 0;
6720
6721 /* QUIC always has buffers allocated. */
6722 if (IS_QUIC(ssl))
6723 return 1;
6724
6725 rl = &sc->rlayer;
6726
6727 return rl->rrlmethod->alloc_buffers(rl->rrl)
6728 && rl->wrlmethod->alloc_buffers(rl->wrl);
6729 }
6730
SSL_CTX_set_keylog_callback(SSL_CTX * ctx,SSL_CTX_keylog_cb_func cb)6731 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6732 {
6733 ctx->keylog_callback = cb;
6734 }
6735
SSL_CTX_get_keylog_callback(const SSL_CTX * ctx)6736 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6737 {
6738 return ctx->keylog_callback;
6739 }
6740
nss_keylog_int(const char * prefix,SSL_CONNECTION * sc,const uint8_t * parameter_1,size_t parameter_1_len,const uint8_t * parameter_2,size_t parameter_2_len)6741 static int nss_keylog_int(const char *prefix,
6742 SSL_CONNECTION *sc,
6743 const uint8_t *parameter_1,
6744 size_t parameter_1_len,
6745 const uint8_t *parameter_2,
6746 size_t parameter_2_len)
6747 {
6748 char *out = NULL;
6749 char *cursor = NULL;
6750 size_t out_len = 0, i, prefix_len;
6751 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6752
6753 if (sctx->keylog_callback == NULL)
6754 return 1;
6755
6756 /*
6757 * Our output buffer will contain the following strings, rendered with
6758 * space characters in between, terminated by a NULL character: first the
6759 * prefix, then the first parameter, then the second parameter. The
6760 * meaning of each parameter depends on the specific key material being
6761 * logged. Note that the first and second parameters are encoded in
6762 * hexadecimal, so we need a buffer that is twice their lengths.
6763 */
6764 prefix_len = strlen(prefix);
6765 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6766 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL)
6767 return 0;
6768
6769 memcpy(cursor, prefix, prefix_len);
6770 cursor += prefix_len;
6771 *cursor++ = ' ';
6772
6773 for (i = 0; i < parameter_1_len; ++i)
6774 cursor += ossl_to_lowerhex(cursor, parameter_1[i]);
6775 *cursor++ = ' ';
6776
6777 for (i = 0; i < parameter_2_len; ++i)
6778 cursor += ossl_to_lowerhex(cursor, parameter_2[i]);
6779 *cursor = '\0';
6780
6781 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6782 OPENSSL_clear_free(out, out_len);
6783 return 1;
6784 }
6785
ssl_log_rsa_client_key_exchange(SSL_CONNECTION * sc,const uint8_t * encrypted_premaster,size_t encrypted_premaster_len,const uint8_t * premaster,size_t premaster_len)6786 int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6787 const uint8_t *encrypted_premaster,
6788 size_t encrypted_premaster_len,
6789 const uint8_t *premaster,
6790 size_t premaster_len)
6791 {
6792 if (encrypted_premaster_len < 8) {
6793 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6794 return 0;
6795 }
6796
6797 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
6798 return nss_keylog_int("RSA",
6799 sc,
6800 encrypted_premaster,
6801 8,
6802 premaster,
6803 premaster_len);
6804 }
6805
ssl_log_secret(SSL_CONNECTION * sc,const char * label,const uint8_t * secret,size_t secret_len)6806 int ssl_log_secret(SSL_CONNECTION *sc,
6807 const char *label,
6808 const uint8_t *secret,
6809 size_t secret_len)
6810 {
6811 return nss_keylog_int(label,
6812 sc,
6813 sc->s3.client_random,
6814 SSL3_RANDOM_SIZE,
6815 secret,
6816 secret_len);
6817 }
6818
6819 #define SSLV2_CIPHER_LEN 3
6820
ssl_cache_cipherlist(SSL_CONNECTION * s,PACKET * cipher_suites,int sslv2format)6821 int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
6822 {
6823 int n;
6824
6825 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6826
6827 if (PACKET_remaining(cipher_suites) == 0) {
6828 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6829 return 0;
6830 }
6831
6832 if (PACKET_remaining(cipher_suites) % n != 0) {
6833 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6834 return 0;
6835 }
6836
6837 OPENSSL_free(s->s3.tmp.ciphers_raw);
6838 s->s3.tmp.ciphers_raw = NULL;
6839 s->s3.tmp.ciphers_rawlen = 0;
6840
6841 if (sslv2format) {
6842 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6843 PACKET sslv2ciphers = *cipher_suites;
6844 unsigned int leadbyte;
6845 unsigned char *raw;
6846
6847 /*
6848 * We store the raw ciphers list in SSLv3+ format so we need to do some
6849 * preprocessing to convert the list first. If there are any SSLv2 only
6850 * ciphersuites with a non-zero leading byte then we are going to
6851 * slightly over allocate because we won't store those. But that isn't a
6852 * problem.
6853 */
6854 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6855 s->s3.tmp.ciphers_raw = raw;
6856 if (raw == NULL) {
6857 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6858 return 0;
6859 }
6860 for (s->s3.tmp.ciphers_rawlen = 0;
6861 PACKET_remaining(&sslv2ciphers) > 0;
6862 raw += TLS_CIPHER_LEN) {
6863 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6864 || (leadbyte == 0
6865 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6866 TLS_CIPHER_LEN))
6867 || (leadbyte != 0
6868 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6869 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6870 OPENSSL_free(s->s3.tmp.ciphers_raw);
6871 s->s3.tmp.ciphers_raw = NULL;
6872 s->s3.tmp.ciphers_rawlen = 0;
6873 return 0;
6874 }
6875 if (leadbyte == 0)
6876 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6877 }
6878 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6879 &s->s3.tmp.ciphers_rawlen)) {
6880 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6881 return 0;
6882 }
6883 return 1;
6884 }
6885
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)6886 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6887 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6888 STACK_OF(SSL_CIPHER) **scsvs)
6889 {
6890 PACKET pkt;
6891 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6892
6893 if (sc == NULL)
6894 return 0;
6895
6896 if (!PACKET_buf_init(&pkt, bytes, len))
6897 return 0;
6898 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6899 }
6900
ossl_bytes_to_cipher_list(SSL_CONNECTION * s,PACKET * cipher_suites,STACK_OF (SSL_CIPHER)** skp,STACK_OF (SSL_CIPHER)** scsvs_out,int sslv2format,int fatal)6901 int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6902 STACK_OF(SSL_CIPHER) **skp,
6903 STACK_OF(SSL_CIPHER) **scsvs_out,
6904 int sslv2format, int fatal)
6905 {
6906 const SSL_CIPHER *c;
6907 STACK_OF(SSL_CIPHER) *sk = NULL;
6908 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6909 int n;
6910 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6911 unsigned char cipher[SSLV2_CIPHER_LEN];
6912
6913 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6914
6915 if (PACKET_remaining(cipher_suites) == 0) {
6916 if (fatal)
6917 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6918 else
6919 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6920 return 0;
6921 }
6922
6923 if (PACKET_remaining(cipher_suites) % n != 0) {
6924 if (fatal)
6925 SSLfatal(s, SSL_AD_DECODE_ERROR,
6926 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6927 else
6928 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6929 return 0;
6930 }
6931
6932 sk = sk_SSL_CIPHER_new_null();
6933 scsvs = sk_SSL_CIPHER_new_null();
6934 if (sk == NULL || scsvs == NULL) {
6935 if (fatal)
6936 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6937 else
6938 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6939 goto err;
6940 }
6941
6942 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6943 /*
6944 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6945 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6946 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6947 */
6948 if (sslv2format && cipher[0] != '\0')
6949 continue;
6950
6951 /* For SSLv2-compat, ignore leading 0-byte. */
6952 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6953 if (c != NULL) {
6954 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6955 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6956 if (fatal)
6957 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6958 else
6959 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6960 goto err;
6961 }
6962 }
6963 }
6964 if (PACKET_remaining(cipher_suites) > 0) {
6965 if (fatal)
6966 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6967 else
6968 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6969 goto err;
6970 }
6971
6972 if (skp != NULL)
6973 *skp = sk;
6974 else
6975 sk_SSL_CIPHER_free(sk);
6976 if (scsvs_out != NULL)
6977 *scsvs_out = scsvs;
6978 else
6979 sk_SSL_CIPHER_free(scsvs);
6980 return 1;
6981 err:
6982 sk_SSL_CIPHER_free(sk);
6983 sk_SSL_CIPHER_free(scsvs);
6984 return 0;
6985 }
6986
SSL_CTX_set_max_early_data(SSL_CTX * ctx,uint32_t max_early_data)6987 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6988 {
6989 ctx->max_early_data = max_early_data;
6990
6991 return 1;
6992 }
6993
SSL_CTX_get_max_early_data(const SSL_CTX * ctx)6994 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6995 {
6996 return ctx->max_early_data;
6997 }
6998
SSL_set_max_early_data(SSL * s,uint32_t max_early_data)6999 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
7000 {
7001 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7002
7003 if (sc == NULL)
7004 return 0;
7005
7006 sc->max_early_data = max_early_data;
7007
7008 return 1;
7009 }
7010
SSL_get_max_early_data(const SSL * s)7011 uint32_t SSL_get_max_early_data(const SSL *s)
7012 {
7013 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
7014
7015 if (sc == NULL)
7016 return 0;
7017
7018 return sc->max_early_data;
7019 }
7020
SSL_CTX_set_recv_max_early_data(SSL_CTX * ctx,uint32_t recv_max_early_data)7021 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
7022 {
7023 ctx->recv_max_early_data = recv_max_early_data;
7024
7025 return 1;
7026 }
7027
SSL_CTX_get_recv_max_early_data(const SSL_CTX * ctx)7028 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
7029 {
7030 return ctx->recv_max_early_data;
7031 }
7032
SSL_set_recv_max_early_data(SSL * s,uint32_t recv_max_early_data)7033 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
7034 {
7035 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7036
7037 if (sc == NULL)
7038 return 0;
7039
7040 sc->recv_max_early_data = recv_max_early_data;
7041
7042 return 1;
7043 }
7044
SSL_get_recv_max_early_data(const SSL * s)7045 uint32_t SSL_get_recv_max_early_data(const SSL *s)
7046 {
7047 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
7048
7049 if (sc == NULL)
7050 return 0;
7051
7052 return sc->recv_max_early_data;
7053 }
7054
ssl_get_max_send_fragment(const SSL_CONNECTION * sc)7055 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
7056 {
7057 /* Return any active Max Fragment Len extension */
7058 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
7059 return GET_MAX_FRAGMENT_LENGTH(sc->session);
7060
7061 /* return current SSL connection setting */
7062 return sc->max_send_fragment;
7063 }
7064
ssl_get_split_send_fragment(const SSL_CONNECTION * sc)7065 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
7066 {
7067 /* Return a value regarding an active Max Fragment Len extension */
7068 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
7069 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
7070 return GET_MAX_FRAGMENT_LENGTH(sc->session);
7071
7072 /* else limit |split_send_fragment| to current |max_send_fragment| */
7073 if (sc->split_send_fragment > sc->max_send_fragment)
7074 return sc->max_send_fragment;
7075
7076 /* return current SSL connection setting */
7077 return sc->split_send_fragment;
7078 }
7079
SSL_stateless(SSL * s)7080 int SSL_stateless(SSL *s)
7081 {
7082 int ret;
7083 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7084
7085 if (sc == NULL)
7086 return 0;
7087
7088 /* Ensure there is no state left over from a previous invocation */
7089 if (!SSL_clear(s))
7090 return 0;
7091
7092 ERR_clear_error();
7093
7094 sc->s3.flags |= TLS1_FLAGS_STATELESS;
7095 ret = SSL_accept(s);
7096 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
7097
7098 if (ret > 0 && sc->ext.cookieok)
7099 return 1;
7100
7101 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
7102 return 0;
7103
7104 return -1;
7105 }
7106
SSL_CTX_set_post_handshake_auth(SSL_CTX * ctx,int val)7107 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
7108 {
7109 ctx->pha_enabled = val;
7110 }
7111
SSL_set_post_handshake_auth(SSL * ssl,int val)7112 void SSL_set_post_handshake_auth(SSL *ssl, int val)
7113 {
7114 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
7115
7116 if (sc == NULL)
7117 return;
7118
7119 sc->pha_enabled = val;
7120 }
7121
SSL_verify_client_post_handshake(SSL * ssl)7122 int SSL_verify_client_post_handshake(SSL *ssl)
7123 {
7124 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
7125
7126 #ifndef OPENSSL_NO_QUIC
7127 if (IS_QUIC(ssl)) {
7128 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
7129 return 0;
7130 }
7131 #endif
7132
7133 if (sc == NULL)
7134 return 0;
7135
7136 if (!SSL_CONNECTION_IS_TLS13(sc)) {
7137 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
7138 return 0;
7139 }
7140 if (!sc->server) {
7141 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
7142 return 0;
7143 }
7144
7145 if (!SSL_is_init_finished(ssl)) {
7146 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
7147 return 0;
7148 }
7149
7150 switch (sc->post_handshake_auth) {
7151 case SSL_PHA_NONE:
7152 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
7153 return 0;
7154 default:
7155 case SSL_PHA_EXT_SENT:
7156 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
7157 return 0;
7158 case SSL_PHA_EXT_RECEIVED:
7159 break;
7160 case SSL_PHA_REQUEST_PENDING:
7161 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
7162 return 0;
7163 case SSL_PHA_REQUESTED:
7164 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
7165 return 0;
7166 }
7167
7168 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
7169
7170 /* checks verify_mode and algorithm_auth */
7171 if (!send_certificate_request(sc)) {
7172 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
7173 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
7174 return 0;
7175 }
7176
7177 ossl_statem_set_in_init(sc, 1);
7178 return 1;
7179 }
7180
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)7181 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
7182 SSL_CTX_generate_session_ticket_fn gen_cb,
7183 SSL_CTX_decrypt_session_ticket_fn dec_cb,
7184 void *arg)
7185 {
7186 ctx->generate_ticket_cb = gen_cb;
7187 ctx->decrypt_ticket_cb = dec_cb;
7188 ctx->ticket_cb_data = arg;
7189 return 1;
7190 }
7191
SSL_CTX_set_allow_early_data_cb(SSL_CTX * ctx,SSL_allow_early_data_cb_fn cb,void * arg)7192 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
7193 SSL_allow_early_data_cb_fn cb,
7194 void *arg)
7195 {
7196 ctx->allow_early_data_cb = cb;
7197 ctx->allow_early_data_cb_data = arg;
7198 }
7199
SSL_set_allow_early_data_cb(SSL * s,SSL_allow_early_data_cb_fn cb,void * arg)7200 void SSL_set_allow_early_data_cb(SSL *s,
7201 SSL_allow_early_data_cb_fn cb,
7202 void *arg)
7203 {
7204 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7205
7206 if (sc == NULL)
7207 return;
7208
7209 sc->allow_early_data_cb = cb;
7210 sc->allow_early_data_cb_data = arg;
7211 }
7212
ssl_evp_cipher_fetch(OSSL_LIB_CTX * libctx,int nid,const char * properties)7213 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
7214 int nid,
7215 const char *properties)
7216 {
7217 const EVP_CIPHER *ciph;
7218
7219 ciph = tls_get_cipher_from_engine(nid);
7220 if (ciph != NULL)
7221 return ciph;
7222
7223 /*
7224 * If there is no engine cipher then we do an explicit fetch. This may fail
7225 * and that could be ok
7226 */
7227 ERR_set_mark();
7228 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
7229 if (ciph != NULL) {
7230 OSSL_PARAM params[2];
7231 int decrypt_only = 0;
7232
7233 params[0] = OSSL_PARAM_construct_int(OSSL_CIPHER_PARAM_DECRYPT_ONLY,
7234 &decrypt_only);
7235 params[1] = OSSL_PARAM_construct_end();
7236 if (EVP_CIPHER_get_params((EVP_CIPHER *)ciph, params)
7237 && decrypt_only) {
7238 /* If a cipher is decrypt-only, it is unusable */
7239 EVP_CIPHER_free((EVP_CIPHER *)ciph);
7240 ciph = NULL;
7241 }
7242 }
7243 ERR_pop_to_mark();
7244 return ciph;
7245 }
7246
7247
ssl_evp_cipher_up_ref(const EVP_CIPHER * cipher)7248 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
7249 {
7250 /* Don't up-ref an implicit EVP_CIPHER */
7251 if (EVP_CIPHER_get0_provider(cipher) == NULL)
7252 return 1;
7253
7254 /*
7255 * The cipher was explicitly fetched and therefore it is safe to cast
7256 * away the const
7257 */
7258 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
7259 }
7260
ssl_evp_cipher_free(const EVP_CIPHER * cipher)7261 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
7262 {
7263 if (cipher == NULL)
7264 return;
7265
7266 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
7267 /*
7268 * The cipher was explicitly fetched and therefore it is safe to cast
7269 * away the const
7270 */
7271 EVP_CIPHER_free((EVP_CIPHER *)cipher);
7272 }
7273 }
7274
ssl_evp_md_fetch(OSSL_LIB_CTX * libctx,int nid,const char * properties)7275 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
7276 int nid,
7277 const char *properties)
7278 {
7279 const EVP_MD *md;
7280
7281 md = tls_get_digest_from_engine(nid);
7282 if (md != NULL)
7283 return md;
7284
7285 /* Otherwise we do an explicit fetch */
7286 ERR_set_mark();
7287 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
7288 ERR_pop_to_mark();
7289 return md;
7290 }
7291
ssl_evp_md_up_ref(const EVP_MD * md)7292 int ssl_evp_md_up_ref(const EVP_MD *md)
7293 {
7294 /* Don't up-ref an implicit EVP_MD */
7295 if (EVP_MD_get0_provider(md) == NULL)
7296 return 1;
7297
7298 /*
7299 * The digest was explicitly fetched and therefore it is safe to cast
7300 * away the const
7301 */
7302 return EVP_MD_up_ref((EVP_MD *)md);
7303 }
7304
ssl_evp_md_free(const EVP_MD * md)7305 void ssl_evp_md_free(const EVP_MD *md)
7306 {
7307 if (md == NULL)
7308 return;
7309
7310 if (EVP_MD_get0_provider(md) != NULL) {
7311 /*
7312 * The digest was explicitly fetched and therefore it is safe to cast
7313 * away the const
7314 */
7315 EVP_MD_free((EVP_MD *)md);
7316 }
7317 }
7318
SSL_set0_tmp_dh_pkey(SSL * s,EVP_PKEY * dhpkey)7319 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
7320 {
7321 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7322
7323 if (sc == NULL)
7324 return 0;
7325
7326 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
7327 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
7328 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
7329 return 0;
7330 }
7331 EVP_PKEY_free(sc->cert->dh_tmp);
7332 sc->cert->dh_tmp = dhpkey;
7333 return 1;
7334 }
7335
SSL_CTX_set0_tmp_dh_pkey(SSL_CTX * ctx,EVP_PKEY * dhpkey)7336 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
7337 {
7338 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
7339 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
7340 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
7341 return 0;
7342 }
7343 EVP_PKEY_free(ctx->cert->dh_tmp);
7344 ctx->cert->dh_tmp = dhpkey;
7345 return 1;
7346 }
7347
7348 /* QUIC-specific methods which are supported on QUIC connections only. */
SSL_handle_events(SSL * s)7349 int SSL_handle_events(SSL *s)
7350 {
7351 SSL_CONNECTION *sc;
7352
7353 #ifndef OPENSSL_NO_QUIC
7354 if (IS_QUIC(s))
7355 return ossl_quic_handle_events(s);
7356 #endif
7357
7358 sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7359 if (sc != NULL && SSL_CONNECTION_IS_DTLS(sc))
7360 /*
7361 * DTLSv1_handle_timeout returns 0 if the timer wasn't expired yet,
7362 * which we consider a success case. Theoretically DTLSv1_handle_timeout
7363 * can also return 0 if s is NULL or not a DTLS object, but we've
7364 * already ruled out those possibilities above, so this is not possible
7365 * here. Thus the only failure cases are where DTLSv1_handle_timeout
7366 * returns -1.
7367 */
7368 return DTLSv1_handle_timeout(s) >= 0;
7369
7370 return 1;
7371 }
7372
SSL_get_event_timeout(SSL * s,struct timeval * tv,int * is_infinite)7373 int SSL_get_event_timeout(SSL *s, struct timeval *tv, int *is_infinite)
7374 {
7375 SSL_CONNECTION *sc;
7376
7377 #ifndef OPENSSL_NO_QUIC
7378 if (IS_QUIC(s))
7379 return ossl_quic_get_event_timeout(s, tv, is_infinite);
7380 #endif
7381
7382 sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7383 if (sc != NULL && SSL_CONNECTION_IS_DTLS(sc)
7384 && DTLSv1_get_timeout(s, tv)) {
7385 *is_infinite = 0;
7386 return 1;
7387 }
7388
7389 tv->tv_sec = 1000000;
7390 tv->tv_usec = 0;
7391 *is_infinite = 1;
7392 return 1;
7393 }
7394
SSL_get_rpoll_descriptor(SSL * s,BIO_POLL_DESCRIPTOR * desc)7395 int SSL_get_rpoll_descriptor(SSL *s, BIO_POLL_DESCRIPTOR *desc)
7396 {
7397 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7398
7399 #ifndef OPENSSL_NO_QUIC
7400 if (IS_QUIC(s))
7401 return ossl_quic_get_rpoll_descriptor(s, desc);
7402 #endif
7403
7404 if (sc == NULL || sc->rbio == NULL)
7405 return 0;
7406
7407 return BIO_get_rpoll_descriptor(sc->rbio, desc);
7408 }
7409
SSL_get_wpoll_descriptor(SSL * s,BIO_POLL_DESCRIPTOR * desc)7410 int SSL_get_wpoll_descriptor(SSL *s, BIO_POLL_DESCRIPTOR *desc)
7411 {
7412 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7413
7414 #ifndef OPENSSL_NO_QUIC
7415 if (IS_QUIC(s))
7416 return ossl_quic_get_wpoll_descriptor(s, desc);
7417 #endif
7418
7419 if (sc == NULL || sc->wbio == NULL)
7420 return 0;
7421
7422 return BIO_get_wpoll_descriptor(sc->wbio, desc);
7423 }
7424
SSL_net_read_desired(SSL * s)7425 int SSL_net_read_desired(SSL *s)
7426 {
7427 #ifndef OPENSSL_NO_QUIC
7428 if (!IS_QUIC(s))
7429 return SSL_want_read(s);
7430
7431 return ossl_quic_get_net_read_desired(s);
7432 #else
7433 return SSL_want_read(s);
7434 #endif
7435 }
7436
SSL_net_write_desired(SSL * s)7437 int SSL_net_write_desired(SSL *s)
7438 {
7439 #ifndef OPENSSL_NO_QUIC
7440 if (!IS_QUIC(s))
7441 return SSL_want_write(s);
7442
7443 return ossl_quic_get_net_write_desired(s);
7444 #else
7445 return SSL_want_write(s);
7446 #endif
7447 }
7448
SSL_set_blocking_mode(SSL * s,int blocking)7449 int SSL_set_blocking_mode(SSL *s, int blocking)
7450 {
7451 #ifndef OPENSSL_NO_QUIC
7452 if (!IS_QUIC(s))
7453 return 0;
7454
7455 return ossl_quic_conn_set_blocking_mode(s, blocking);
7456 #else
7457 return 0;
7458 #endif
7459 }
7460
SSL_get_blocking_mode(SSL * s)7461 int SSL_get_blocking_mode(SSL *s)
7462 {
7463 #ifndef OPENSSL_NO_QUIC
7464 if (!IS_QUIC(s))
7465 return -1;
7466
7467 return ossl_quic_conn_get_blocking_mode(s);
7468 #else
7469 return -1;
7470 #endif
7471 }
7472
SSL_set1_initial_peer_addr(SSL * s,const BIO_ADDR * peer_addr)7473 int SSL_set1_initial_peer_addr(SSL *s, const BIO_ADDR *peer_addr)
7474 {
7475 #ifndef OPENSSL_NO_QUIC
7476 if (!IS_QUIC(s))
7477 return 0;
7478
7479 return ossl_quic_conn_set_initial_peer_addr(s, peer_addr);
7480 #else
7481 return 0;
7482 #endif
7483 }
7484
SSL_shutdown_ex(SSL * ssl,uint64_t flags,const SSL_SHUTDOWN_EX_ARGS * args,size_t args_len)7485 int SSL_shutdown_ex(SSL *ssl, uint64_t flags,
7486 const SSL_SHUTDOWN_EX_ARGS *args,
7487 size_t args_len)
7488 {
7489 #ifndef OPENSSL_NO_QUIC
7490 if (!IS_QUIC(ssl))
7491 return SSL_shutdown(ssl);
7492
7493 return ossl_quic_conn_shutdown(ssl, flags, args, args_len);
7494 #else
7495 return SSL_shutdown(ssl);
7496 #endif
7497 }
7498
SSL_stream_conclude(SSL * ssl,uint64_t flags)7499 int SSL_stream_conclude(SSL *ssl, uint64_t flags)
7500 {
7501 #ifndef OPENSSL_NO_QUIC
7502 if (!IS_QUIC(ssl))
7503 return 0;
7504
7505 return ossl_quic_conn_stream_conclude(ssl);
7506 #else
7507 return 0;
7508 #endif
7509 }
7510
SSL_new_stream(SSL * s,uint64_t flags)7511 SSL *SSL_new_stream(SSL *s, uint64_t flags)
7512 {
7513 #ifndef OPENSSL_NO_QUIC
7514 if (!IS_QUIC(s))
7515 return NULL;
7516
7517 return ossl_quic_conn_stream_new(s, flags);
7518 #else
7519 return NULL;
7520 #endif
7521 }
7522
SSL_get0_connection(SSL * s)7523 SSL *SSL_get0_connection(SSL *s)
7524 {
7525 #ifndef OPENSSL_NO_QUIC
7526 if (!IS_QUIC(s))
7527 return s;
7528
7529 return ossl_quic_get0_connection(s);
7530 #else
7531 return s;
7532 #endif
7533 }
7534
SSL_is_connection(SSL * s)7535 int SSL_is_connection(SSL *s)
7536 {
7537 return SSL_get0_connection(s) == s;
7538 }
7539
SSL_get_stream_type(SSL * s)7540 int SSL_get_stream_type(SSL *s)
7541 {
7542 #ifndef OPENSSL_NO_QUIC
7543 if (!IS_QUIC(s))
7544 return SSL_STREAM_TYPE_BIDI;
7545
7546 return ossl_quic_get_stream_type(s);
7547 #else
7548 return SSL_STREAM_TYPE_BIDI;
7549 #endif
7550 }
7551
SSL_get_stream_id(SSL * s)7552 uint64_t SSL_get_stream_id(SSL *s)
7553 {
7554 #ifndef OPENSSL_NO_QUIC
7555 if (!IS_QUIC(s))
7556 return UINT64_MAX;
7557
7558 return ossl_quic_get_stream_id(s);
7559 #else
7560 return UINT64_MAX;
7561 #endif
7562 }
7563
SSL_is_stream_local(SSL * s)7564 int SSL_is_stream_local(SSL *s)
7565 {
7566 #ifndef OPENSSL_NO_QUIC
7567 if (!IS_QUIC(s))
7568 return -1;
7569
7570 return ossl_quic_is_stream_local(s);
7571 #else
7572 return -1;
7573 #endif
7574 }
7575
SSL_set_default_stream_mode(SSL * s,uint32_t mode)7576 int SSL_set_default_stream_mode(SSL *s, uint32_t mode)
7577 {
7578 #ifndef OPENSSL_NO_QUIC
7579 if (!IS_QUIC(s))
7580 return 0;
7581
7582 return ossl_quic_set_default_stream_mode(s, mode);
7583 #else
7584 return 0;
7585 #endif
7586 }
7587
SSL_set_incoming_stream_policy(SSL * s,int policy,uint64_t aec)7588 int SSL_set_incoming_stream_policy(SSL *s, int policy, uint64_t aec)
7589 {
7590 #ifndef OPENSSL_NO_QUIC
7591 if (!IS_QUIC(s))
7592 return 0;
7593
7594 return ossl_quic_set_incoming_stream_policy(s, policy, aec);
7595 #else
7596 return 0;
7597 #endif
7598 }
7599
SSL_accept_stream(SSL * s,uint64_t flags)7600 SSL *SSL_accept_stream(SSL *s, uint64_t flags)
7601 {
7602 #ifndef OPENSSL_NO_QUIC
7603 if (!IS_QUIC(s))
7604 return NULL;
7605
7606 return ossl_quic_accept_stream(s, flags);
7607 #else
7608 return NULL;
7609 #endif
7610 }
7611
SSL_get_accept_stream_queue_len(SSL * s)7612 size_t SSL_get_accept_stream_queue_len(SSL *s)
7613 {
7614 #ifndef OPENSSL_NO_QUIC
7615 if (!IS_QUIC(s))
7616 return 0;
7617
7618 return ossl_quic_get_accept_stream_queue_len(s);
7619 #else
7620 return 0;
7621 #endif
7622 }
7623
SSL_stream_reset(SSL * s,const SSL_STREAM_RESET_ARGS * args,size_t args_len)7624 int SSL_stream_reset(SSL *s,
7625 const SSL_STREAM_RESET_ARGS *args,
7626 size_t args_len)
7627 {
7628 #ifndef OPENSSL_NO_QUIC
7629 if (!IS_QUIC(s))
7630 return 0;
7631
7632 return ossl_quic_stream_reset(s, args, args_len);
7633 #else
7634 return 0;
7635 #endif
7636 }
7637
SSL_get_stream_read_state(SSL * s)7638 int SSL_get_stream_read_state(SSL *s)
7639 {
7640 #ifndef OPENSSL_NO_QUIC
7641 if (!IS_QUIC(s))
7642 return SSL_STREAM_STATE_NONE;
7643
7644 return ossl_quic_get_stream_read_state(s);
7645 #else
7646 return SSL_STREAM_STATE_NONE;
7647 #endif
7648 }
7649
SSL_get_stream_write_state(SSL * s)7650 int SSL_get_stream_write_state(SSL *s)
7651 {
7652 #ifndef OPENSSL_NO_QUIC
7653 if (!IS_QUIC(s))
7654 return SSL_STREAM_STATE_NONE;
7655
7656 return ossl_quic_get_stream_write_state(s);
7657 #else
7658 return SSL_STREAM_STATE_NONE;
7659 #endif
7660 }
7661
SSL_get_stream_read_error_code(SSL * s,uint64_t * app_error_code)7662 int SSL_get_stream_read_error_code(SSL *s, uint64_t *app_error_code)
7663 {
7664 #ifndef OPENSSL_NO_QUIC
7665 if (!IS_QUIC(s))
7666 return -1;
7667
7668 return ossl_quic_get_stream_read_error_code(s, app_error_code);
7669 #else
7670 return -1;
7671 #endif
7672 }
7673
SSL_get_stream_write_error_code(SSL * s,uint64_t * app_error_code)7674 int SSL_get_stream_write_error_code(SSL *s, uint64_t *app_error_code)
7675 {
7676 #ifndef OPENSSL_NO_QUIC
7677 if (!IS_QUIC(s))
7678 return -1;
7679
7680 return ossl_quic_get_stream_write_error_code(s, app_error_code);
7681 #else
7682 return -1;
7683 #endif
7684 }
7685
SSL_get_conn_close_info(SSL * s,SSL_CONN_CLOSE_INFO * info,size_t info_len)7686 int SSL_get_conn_close_info(SSL *s, SSL_CONN_CLOSE_INFO *info,
7687 size_t info_len)
7688 {
7689 #ifndef OPENSSL_NO_QUIC
7690 if (!IS_QUIC(s))
7691 return -1;
7692
7693 return ossl_quic_get_conn_close_info(s, info, info_len);
7694 #else
7695 return -1;
7696 #endif
7697 }
7698
SSL_get_value_uint(SSL * s,uint32_t class_,uint32_t id,uint64_t * value)7699 int SSL_get_value_uint(SSL *s, uint32_t class_, uint32_t id,
7700 uint64_t *value)
7701 {
7702 #ifndef OPENSSL_NO_QUIC
7703 if (IS_QUIC(s))
7704 return ossl_quic_get_value_uint(s, class_, id, value);
7705 #endif
7706
7707 ERR_raise(ERR_LIB_SSL, SSL_R_UNSUPPORTED_PROTOCOL);
7708 return 0;
7709 }
7710
SSL_set_value_uint(SSL * s,uint32_t class_,uint32_t id,uint64_t value)7711 int SSL_set_value_uint(SSL *s, uint32_t class_, uint32_t id,
7712 uint64_t value)
7713 {
7714 #ifndef OPENSSL_NO_QUIC
7715 if (IS_QUIC(s))
7716 return ossl_quic_set_value_uint(s, class_, id, value);
7717 #endif
7718
7719 ERR_raise(ERR_LIB_SSL, SSL_R_UNSUPPORTED_PROTOCOL);
7720 return 0;
7721 }
7722
SSL_add_expected_rpk(SSL * s,EVP_PKEY * rpk)7723 int SSL_add_expected_rpk(SSL *s, EVP_PKEY *rpk)
7724 {
7725 unsigned char *data = NULL;
7726 SSL_DANE *dane = SSL_get0_dane(s);
7727 int ret;
7728
7729 if (dane == NULL || dane->dctx == NULL)
7730 return 0;
7731 if ((ret = i2d_PUBKEY(rpk, &data)) <= 0)
7732 return 0;
7733
7734 ret = SSL_dane_tlsa_add(s, DANETLS_USAGE_DANE_EE,
7735 DANETLS_SELECTOR_SPKI,
7736 DANETLS_MATCHING_FULL,
7737 data, (size_t)ret) > 0;
7738 OPENSSL_free(data);
7739 return ret;
7740 }
7741
SSL_get0_peer_rpk(const SSL * s)7742 EVP_PKEY *SSL_get0_peer_rpk(const SSL *s)
7743 {
7744 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7745
7746 if (sc == NULL || sc->session == NULL)
7747 return NULL;
7748 return sc->session->peer_rpk;
7749 }
7750
SSL_get_negotiated_client_cert_type(const SSL * s)7751 int SSL_get_negotiated_client_cert_type(const SSL *s)
7752 {
7753 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7754
7755 if (sc == NULL)
7756 return 0;
7757
7758 return sc->ext.client_cert_type;
7759 }
7760
SSL_get_negotiated_server_cert_type(const SSL * s)7761 int SSL_get_negotiated_server_cert_type(const SSL *s)
7762 {
7763 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7764
7765 if (sc == NULL)
7766 return 0;
7767
7768 return sc->ext.server_cert_type;
7769 }
7770
validate_cert_type(const unsigned char * val,size_t len)7771 static int validate_cert_type(const unsigned char *val, size_t len)
7772 {
7773 size_t i;
7774 int saw_rpk = 0;
7775 int saw_x509 = 0;
7776
7777 if (val == NULL && len == 0)
7778 return 1;
7779
7780 if (val == NULL || len == 0)
7781 return 0;
7782
7783 for (i = 0; i < len; i++) {
7784 switch (val[i]) {
7785 case TLSEXT_cert_type_rpk:
7786 if (saw_rpk)
7787 return 0;
7788 saw_rpk = 1;
7789 break;
7790 case TLSEXT_cert_type_x509:
7791 if (saw_x509)
7792 return 0;
7793 saw_x509 = 1;
7794 break;
7795 case TLSEXT_cert_type_pgp:
7796 case TLSEXT_cert_type_1609dot2:
7797 default:
7798 return 0;
7799 }
7800 }
7801 return 1;
7802 }
7803
set_cert_type(unsigned char ** cert_type,size_t * cert_type_len,const unsigned char * val,size_t len)7804 static int set_cert_type(unsigned char **cert_type,
7805 size_t *cert_type_len,
7806 const unsigned char *val,
7807 size_t len)
7808 {
7809 unsigned char *tmp = NULL;
7810
7811 if (!validate_cert_type(val, len))
7812 return 0;
7813
7814 if (val != NULL && (tmp = OPENSSL_memdup(val, len)) == NULL)
7815 return 0;
7816
7817 OPENSSL_free(*cert_type);
7818 *cert_type = tmp;
7819 *cert_type_len = len;
7820 return 1;
7821 }
7822
SSL_set1_client_cert_type(SSL * s,const unsigned char * val,size_t len)7823 int SSL_set1_client_cert_type(SSL *s, const unsigned char *val, size_t len)
7824 {
7825 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7826
7827 return set_cert_type(&sc->client_cert_type, &sc->client_cert_type_len,
7828 val, len);
7829 }
7830
SSL_set1_server_cert_type(SSL * s,const unsigned char * val,size_t len)7831 int SSL_set1_server_cert_type(SSL *s, const unsigned char *val, size_t len)
7832 {
7833 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7834
7835 return set_cert_type(&sc->server_cert_type, &sc->server_cert_type_len,
7836 val, len);
7837 }
7838
SSL_CTX_set1_client_cert_type(SSL_CTX * ctx,const unsigned char * val,size_t len)7839 int SSL_CTX_set1_client_cert_type(SSL_CTX *ctx, const unsigned char *val, size_t len)
7840 {
7841 return set_cert_type(&ctx->client_cert_type, &ctx->client_cert_type_len,
7842 val, len);
7843 }
7844
SSL_CTX_set1_server_cert_type(SSL_CTX * ctx,const unsigned char * val,size_t len)7845 int SSL_CTX_set1_server_cert_type(SSL_CTX *ctx, const unsigned char *val, size_t len)
7846 {
7847 return set_cert_type(&ctx->server_cert_type, &ctx->server_cert_type_len,
7848 val, len);
7849 }
7850
SSL_get0_client_cert_type(const SSL * s,unsigned char ** t,size_t * len)7851 int SSL_get0_client_cert_type(const SSL *s, unsigned char **t, size_t *len)
7852 {
7853 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
7854
7855 if (t == NULL || len == NULL)
7856 return 0;
7857
7858 *t = sc->client_cert_type;
7859 *len = sc->client_cert_type_len;
7860 return 1;
7861 }
7862
SSL_get0_server_cert_type(const SSL * s,unsigned char ** t,size_t * len)7863 int SSL_get0_server_cert_type(const SSL *s, unsigned char **t, size_t *len)
7864 {
7865 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
7866
7867 if (t == NULL || len == NULL)
7868 return 0;
7869
7870 *t = sc->server_cert_type;
7871 *len = sc->server_cert_type_len;
7872 return 1;
7873 }
7874
SSL_CTX_get0_client_cert_type(const SSL_CTX * ctx,unsigned char ** t,size_t * len)7875 int SSL_CTX_get0_client_cert_type(const SSL_CTX *ctx, unsigned char **t, size_t *len)
7876 {
7877 if (t == NULL || len == NULL)
7878 return 0;
7879
7880 *t = ctx->client_cert_type;
7881 *len = ctx->client_cert_type_len;
7882 return 1;
7883 }
7884
SSL_CTX_get0_server_cert_type(const SSL_CTX * ctx,unsigned char ** t,size_t * len)7885 int SSL_CTX_get0_server_cert_type(const SSL_CTX *ctx, unsigned char **t, size_t *len)
7886 {
7887 if (t == NULL || len == NULL)
7888 return 0;
7889
7890 *t = ctx->server_cert_type;
7891 *len = ctx->server_cert_type_len;
7892 return 1;
7893 }
7894