ssl_lib.c

最後變更在這個檔案是 108206,由 vboxsync 提交於 4 週前
openssl-3.3.2: Exported all files to OSE and removed .scm-settings bugref:10757
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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 <stdio.h>
13	#include "ssl_local.h"
14	#include "internal/e_os.h"
15	#include <openssl/objects.h>
16	#include <openssl/x509v3.h>
17	#include <openssl/rand.h>
18	#include <openssl/ocsp.h>
19	#include <openssl/dh.h>
20	#include <openssl/engine.h>
21	#include <openssl/async.h>
22	#include <openssl/ct.h>
23	#include <openssl/trace.h>
24	#include <openssl/core_names.h>
25	#include "internal/cryptlib.h"
26	#include "internal/nelem.h"
27	#include "internal/refcount.h"
28	#include "internal/ktls.h"
29	#include "quic/quic_local.h"
30
31	static int ssl_undefined_function_3(SSL_CONNECTION sc, unsigned char r,
32	unsigned char s, size_t t, size_t u)
33	{
34	return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
35	}
36
37	static int ssl_undefined_function_4(SSL_CONNECTION *sc, int r)
38	{
39	return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
40	}
41
42	static size_t ssl_undefined_function_5(SSL_CONNECTION sc, const char r,
43	size_t s, unsigned char *t)
44	{
45	return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
46	}
47
48	static int ssl_undefined_function_6(int r)
49	{
50	return ssl_undefined_function(NULL);
51	}
52
53	static int ssl_undefined_function_7(SSL_CONNECTION sc, unsigned char r,
54	size_t s, const char *t, size_t u,
55	const unsigned char *v, size_t w, int x)
56	{
57	return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
58	}
59
60	static int ssl_undefined_function_8(SSL_CONNECTION *sc)
61	{
62	return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
63	}
64
65	const SSL3_ENC_METHOD ssl3_undef_enc_method = {
66	ssl_undefined_function_8,
67	ssl_undefined_function_3,
68	ssl_undefined_function_4,
69	ssl_undefined_function_5,
70	NULL, /* client_finished_label */
71	0, /* client_finished_label_len */
72	NULL, /* server_finished_label */
73	0, /* server_finished_label_len */
74	ssl_undefined_function_6,
75	ssl_undefined_function_7,
76	};
77
78	struct ssl_async_args {
79	SSL *s;
80	void *buf;
81	size_t num;
82	enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
83	union {
84	int (func_read) (SSL , void , size_t, size_t );
85	int (func_write) (SSL , const void , size_t, size_t );
86	int (func_other) (SSL );
87	} f;
88	};
89
90	static const struct {
91	uint8_t mtype;
92	uint8_t ord;
93	int nid;
94	} dane_mds[] = {
95	{
96	DANETLS_MATCHING_FULL, 0, NID_undef
97	},
98	{
99	DANETLS_MATCHING_2256, 1, NID_sha256
100	},
101	{
102	DANETLS_MATCHING_2512, 2, NID_sha512
103	},
104	};
105
106	static int dane_ctx_enable(struct dane_ctx_st *dctx)
107	{
108	const EVP_MD **mdevp;
109	uint8_t *mdord;
110	uint8_t mdmax = DANETLS_MATCHING_LAST;
111	int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
112	size_t i;
113
114	if (dctx->mdevp != NULL)
115	return 1;
116
117	mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
118	mdord = OPENSSL_zalloc(n * sizeof(*mdord));
119
120	if (mdord == NULL \|\| mdevp == NULL) {
121	OPENSSL_free(mdord);
122	OPENSSL_free(mdevp);
123	return 0;
124	}
125
126	/* Install default entries */
127	for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
128	const EVP_MD *md;
129
130	if (dane_mds[i].nid == NID_undef \|\|
131	(md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
132	continue;
133	mdevp[dane_mds[i].mtype] = md;
134	mdord[dane_mds[i].mtype] = dane_mds[i].ord;
135	}
136
137	dctx->mdevp = mdevp;
138	dctx->mdord = mdord;
139	dctx->mdmax = mdmax;
140
141	return 1;
142	}
143
144	static void dane_ctx_final(struct dane_ctx_st *dctx)
145	{
146	OPENSSL_free(dctx->mdevp);
147	dctx->mdevp = NULL;
148
149	OPENSSL_free(dctx->mdord);
150	dctx->mdord = NULL;
151	dctx->mdmax = 0;
152	}
153
154	static void tlsa_free(danetls_record *t)
155	{
156	if (t == NULL)
157	return;
158	OPENSSL_free(t->data);
159	EVP_PKEY_free(t->spki);
160	OPENSSL_free(t);
161	}
162
163	static void dane_final(SSL_DANE *dane)
164	{
165	sk_danetls_record_pop_free(dane->trecs, tlsa_free);
166	dane->trecs = NULL;
167
168	OSSL_STACK_OF_X509_free(dane->certs);
169	dane->certs = NULL;
170
171	X509_free(dane->mcert);
172	dane->mcert = NULL;
173	dane->mtlsa = NULL;
174	dane->mdpth = -1;
175	dane->pdpth = -1;
176	}
177
178	/*
179	* dane_copy - Copy dane configuration, sans verification state.
180	*/
181	static int ssl_dane_dup(SSL_CONNECTION to, SSL_CONNECTION from)
182	{
183	int num;
184	int i;
185
186	if (!DANETLS_ENABLED(&from->dane))
187	return 1;
188
189	num = sk_danetls_record_num(from->dane.trecs);
190	dane_final(&to->dane);
191	to->dane.flags = from->dane.flags;
192	to->dane.dctx = &SSL_CONNECTION_GET_CTX(to)->dane;
193	to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
194
195	if (to->dane.trecs == NULL) {
196	ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
197	return 0;
198	}
199
200	for (i = 0; i < num; ++i) {
201	danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
202
203	if (SSL_dane_tlsa_add(SSL_CONNECTION_GET_SSL(to), t->usage,
204	t->selector, t->mtype, t->data, t->dlen) <= 0)
205	return 0;
206	}
207	return 1;
208	}
209
210	static int dane_mtype_set(struct dane_ctx_st *dctx,
211	const EVP_MD *md, uint8_t mtype, uint8_t ord)
212	{
213	int i;
214
215	if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
216	ERR_raise(ERR_LIB_SSL, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
217	return 0;
218	}
219
220	if (mtype > dctx->mdmax) {
221	const EVP_MD **mdevp;
222	uint8_t *mdord;
223	int n = ((int)mtype) + 1;
224
225	mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
226	if (mdevp == NULL)
227	return -1;
228	dctx->mdevp = mdevp;
229
230	mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
231	if (mdord == NULL)
232	return -1;
233	dctx->mdord = mdord;
234
235	/* Zero-fill any gaps */
236	for (i = dctx->mdmax + 1; i < mtype; ++i) {
237	mdevp[i] = NULL;
238	mdord[i] = 0;
239	}
240
241	dctx->mdmax = mtype;
242	}
243
244	dctx->mdevp[mtype] = md;
245	/* Coerce ordinal of disabled matching types to 0 */
246	dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
247
248	return 1;
249	}
250
251	static const EVP_MD tlsa_md_get(SSL_DANE dane, uint8_t mtype)
252	{
253	if (mtype > dane->dctx->mdmax)
254	return NULL;
255	return dane->dctx->mdevp[mtype];
256	}
257
258	static int dane_tlsa_add(SSL_DANE *dane,
259	uint8_t usage,
260	uint8_t selector,
261	uint8_t mtype, const unsigned char *data, size_t dlen)
262	{
263	danetls_record *t;
264	const EVP_MD *md = NULL;
265	int ilen = (int)dlen;
266	int i;
267	int num;
268
269	if (dane->trecs == NULL) {
270	ERR_raise(ERR_LIB_SSL, SSL_R_DANE_NOT_ENABLED);
271	return -1;
272	}
273
274	if (ilen < 0 \|\| dlen != (size_t)ilen) {
275	ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
276	return 0;
277	}
278
279	if (usage > DANETLS_USAGE_LAST) {
280	ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
281	return 0;
282	}
283
284	if (selector > DANETLS_SELECTOR_LAST) {
285	ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_SELECTOR);
286	return 0;
287	}
288
289	if (mtype != DANETLS_MATCHING_FULL) {
290	md = tlsa_md_get(dane, mtype);
291	if (md == NULL) {
292	ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
293	return 0;
294	}
295	}
296
297	if (md != NULL && dlen != (size_t)EVP_MD_get_size(md)) {
298	ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
299	return 0;
300	}
301	if (!data) {
302	ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_NULL_DATA);
303	return 0;
304	}
305
306	if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL)
307	return -1;
308
309	t->usage = usage;
310	t->selector = selector;
311	t->mtype = mtype;
312	t->data = OPENSSL_malloc(dlen);
313	if (t->data == NULL) {
314	tlsa_free(t);
315	return -1;
316	}
317	memcpy(t->data, data, dlen);
318	t->dlen = dlen;
319
320	/* Validate and cache full certificate or public key */
321	if (mtype == DANETLS_MATCHING_FULL) {
322	const unsigned char *p = data;
323	X509 *cert = NULL;
324	EVP_PKEY *pkey = NULL;
325
326	switch (selector) {
327	case DANETLS_SELECTOR_CERT:
328	if (!d2i_X509(&cert, &p, ilen) \|\| p < data \|\|
329	dlen != (size_t)(p - data)) {
330	X509_free(cert);
331	tlsa_free(t);
332	ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
333	return 0;
334	}
335	if (X509_get0_pubkey(cert) == NULL) {
336	X509_free(cert);
337	tlsa_free(t);
338	ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
339	return 0;
340	}
341
342	if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
343	/*
344	* The Full(0) certificate decodes to a seemingly valid X.509
345	* object with a plausible key, so the TLSA record is well
346	* formed. However, we don't actually need the certificate for
347	* usages PKIX-EE(1) or DANE-EE(3), because at least the EE
348	* certificate is always presented by the peer. We discard the
349	* certificate, and just use the TLSA data as an opaque blob
350	* for matching the raw presented DER octets.
351	*
352	* DO NOT FREE `t` here, it will be added to the TLSA record
353	* list below!
354	*/
355	X509_free(cert);
356	break;
357	}
358
359	/*
360	* For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
361	* records that contain full certificates of trust-anchors that are
362	* not present in the wire chain. For usage PKIX-TA(0), we augment
363	* the chain with untrusted Full(0) certificates from DNS, in case
364	* they are missing from the chain.
365	*/
366	if ((dane->certs == NULL &&
367	(dane->certs = sk_X509_new_null()) == NULL) \|\|
368	!sk_X509_push(dane->certs, cert)) {
369	ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
370	X509_free(cert);
371	tlsa_free(t);
372	return -1;
373	}
374	break;
375
376	case DANETLS_SELECTOR_SPKI:
377	if (!d2i_PUBKEY(&pkey, &p, ilen) \|\| p < data \|\|
378	dlen != (size_t)(p - data)) {
379	EVP_PKEY_free(pkey);
380	tlsa_free(t);
381	ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
382	return 0;
383	}
384
385	/*
386	* For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
387	* records that contain full bare keys of trust-anchors that are
388	* not present in the wire chain.
389	*/
390	if (usage == DANETLS_USAGE_DANE_TA)
391	t->spki = pkey;
392	else
393	EVP_PKEY_free(pkey);
394	break;
395	}
396	}
397
398	/*-
399	* Find the right insertion point for the new record.
400	*
401	* See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
402	* they can be processed first, as they require no chain building, and no
403	* expiration or hostname checks. Because DANE-EE(3) is numerically
404	* largest, this is accomplished via descending sort by "usage".
405	*
406	* We also sort in descending order by matching ordinal to simplify
407	* the implementation of digest agility in the verification code.
408	*
409	* The choice of order for the selector is not significant, so we
410	* use the same descending order for consistency.
411	*/
412	num = sk_danetls_record_num(dane->trecs);
413	for (i = 0; i < num; ++i) {
414	danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
415
416	if (rec->usage > usage)
417	continue;
418	if (rec->usage < usage)
419	break;
420	if (rec->selector > selector)
421	continue;
422	if (rec->selector < selector)
423	break;
424	if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
425	continue;
426	break;
427	}
428
429	if (!sk_danetls_record_insert(dane->trecs, t, i)) {
430	tlsa_free(t);
431	ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
432	return -1;
433	}
434	dane->umask \|= DANETLS_USAGE_BIT(usage);
435
436	return 1;
437	}
438
439	/*
440	* Return 0 if there is only one version configured and it was disabled
441	* at configure time. Return 1 otherwise.
442	*/
443	static int ssl_check_allowed_versions(int min_version, int max_version)
444	{
445	int minisdtls = 0, maxisdtls = 0;
446
447	/* Figure out if we're doing DTLS versions or TLS versions */
448	if (min_version == DTLS1_BAD_VER
449	\|\| min_version >> 8 == DTLS1_VERSION_MAJOR)
450	minisdtls = 1;
451	if (max_version == DTLS1_BAD_VER
452	\|\| max_version >> 8 == DTLS1_VERSION_MAJOR)
453	maxisdtls = 1;
454	/* A wildcard version of 0 could be DTLS or TLS. */
455	if ((minisdtls && !maxisdtls && max_version != 0)
456	\|\| (maxisdtls && !minisdtls && min_version != 0)) {
457	/* Mixing DTLS and TLS versions will lead to sadness; deny it. */
458	return 0;
459	}
460
461	if (minisdtls \|\| maxisdtls) {
462	/* Do DTLS version checks. */
463	if (min_version == 0)
464	/* Ignore DTLS1_BAD_VER */
465	min_version = DTLS1_VERSION;
466	if (max_version == 0)
467	max_version = DTLS1_2_VERSION;
468	#ifdef OPENSSL_NO_DTLS1_2
469	if (max_version == DTLS1_2_VERSION)
470	max_version = DTLS1_VERSION;
471	#endif
472	#ifdef OPENSSL_NO_DTLS1
473	if (min_version == DTLS1_VERSION)
474	min_version = DTLS1_2_VERSION;
475	#endif
476	/* Done massaging versions; do the check. */
477	if (0
478	#ifdef OPENSSL_NO_DTLS1
479	\|\| (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
480	&& DTLS_VERSION_GE(DTLS1_VERSION, max_version))
481	#endif
482	#ifdef OPENSSL_NO_DTLS1_2
483	\|\| (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
484	&& DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
485	#endif
486	)
487	return 0;
488	} else {
489	/* Regular TLS version checks. */
490	if (min_version == 0)
491	min_version = SSL3_VERSION;
492	if (max_version == 0)
493	max_version = TLS1_3_VERSION;
494	#ifdef OPENSSL_NO_TLS1_3
495	if (max_version == TLS1_3_VERSION)
496	max_version = TLS1_2_VERSION;
497	#endif
498	#ifdef OPENSSL_NO_TLS1_2
499	if (max_version == TLS1_2_VERSION)
500	max_version = TLS1_1_VERSION;
501	#endif
502	#ifdef OPENSSL_NO_TLS1_1
503	if (max_version == TLS1_1_VERSION)
504	max_version = TLS1_VERSION;
505	#endif
506	#ifdef OPENSSL_NO_TLS1
507	if (max_version == TLS1_VERSION)
508	max_version = SSL3_VERSION;
509	#endif
510	#ifdef OPENSSL_NO_SSL3
511	if (min_version == SSL3_VERSION)
512	min_version = TLS1_VERSION;
513	#endif
514	#ifdef OPENSSL_NO_TLS1
515	if (min_version == TLS1_VERSION)
516	min_version = TLS1_1_VERSION;
517	#endif
518	#ifdef OPENSSL_NO_TLS1_1
519	if (min_version == TLS1_1_VERSION)
520	min_version = TLS1_2_VERSION;
521	#endif
522	#ifdef OPENSSL_NO_TLS1_2
523	if (min_version == TLS1_2_VERSION)
524	min_version = TLS1_3_VERSION;
525	#endif
526	/* Done massaging versions; do the check. */
527	if (0
528	#ifdef OPENSSL_NO_SSL3
529	\|\| (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
530	#endif
531	#ifdef OPENSSL_NO_TLS1
532	\|\| (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
533	#endif
534	#ifdef OPENSSL_NO_TLS1_1
535	\|\| (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
536	#endif
537	#ifdef OPENSSL_NO_TLS1_2
538	\|\| (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
539	#endif
540	#ifdef OPENSSL_NO_TLS1_3
541	\|\| (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
542	#endif
543	)
544	return 0;
545	}
546	return 1;
547	}
548
549	#if defined(__TANDEM) && defined(OPENSSL_VPROC)
550	/*
551	* Define a VPROC function for HP NonStop build ssl library.
552	* This is used by platform version identification tools.
553	* Do not inline this procedure or make it static.
554	*/
555	# define OPENSSL_VPROC_STRING_(x) x##_SSL
556	# define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
557	# define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
558	void OPENSSL_VPROC_FUNC(void) {}
559	#endif
560
561	int SSL_clear(SSL *s)
562	{
563	if (s->method == NULL) {
564	ERR_raise(ERR_LIB_SSL, SSL_R_NO_METHOD_SPECIFIED);
565	return 0;
566	}
567
568	return s->method->ssl_reset(s);
569	}
570
571	int ossl_ssl_connection_reset(SSL *s)
572	{
573	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
574
575	if (sc == NULL)
576	return 0;
577
578	if (ssl_clear_bad_session(sc)) {
579	SSL_SESSION_free(sc->session);
580	sc->session = NULL;
581	}
582	SSL_SESSION_free(sc->psksession);
583	sc->psksession = NULL;
584	OPENSSL_free(sc->psksession_id);
585	sc->psksession_id = NULL;
586	sc->psksession_id_len = 0;
587	sc->hello_retry_request = SSL_HRR_NONE;
588	sc->sent_tickets = 0;
589
590	sc->error = 0;
591	sc->hit = 0;
592	sc->shutdown = 0;
593
594	if (sc->renegotiate) {
595	ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
596	return 0;
597	}
598
599	ossl_statem_clear(sc);
600
601	sc->version = s->method->version;
602	sc->client_version = sc->version;
603	sc->rwstate = SSL_NOTHING;
604
605	BUF_MEM_free(sc->init_buf);
606	sc->init_buf = NULL;
607	sc->first_packet = 0;
608
609	sc->key_update = SSL_KEY_UPDATE_NONE;
610	memset(sc->ext.compress_certificate_from_peer, 0,
611	sizeof(sc->ext.compress_certificate_from_peer));
612	sc->ext.compress_certificate_sent = 0;
613
614	EVP_MD_CTX_free(sc->pha_dgst);
615	sc->pha_dgst = NULL;
616
617	/* Reset DANE verification result state */
618	sc->dane.mdpth = -1;
619	sc->dane.pdpth = -1;
620	X509_free(sc->dane.mcert);
621	sc->dane.mcert = NULL;
622	sc->dane.mtlsa = NULL;
623
624	/* Clear the verification result peername */
625	X509_VERIFY_PARAM_move_peername(sc->param, NULL);
626
627	/* Clear any shared connection state */
628	OPENSSL_free(sc->shared_sigalgs);
629	sc->shared_sigalgs = NULL;
630	sc->shared_sigalgslen = 0;
631
632	/*
633	* Check to see if we were changed into a different method, if so, revert
634	* back.
635	*/
636	if (s->method != s->defltmeth) {
637	s->method->ssl_deinit(s);
638	s->method = s->defltmeth;
639	if (!s->method->ssl_init(s))
640	return 0;
641	} else {
642	if (!s->method->ssl_clear(s))
643	return 0;
644	}
645
646	if (!RECORD_LAYER_reset(&sc->rlayer))
647	return 0;
648
649	return 1;
650	}
651
652	#ifndef OPENSSL_NO_DEPRECATED_3_0
653	/** Used to change an SSL_CTXs default SSL method type */
654	int SSL_CTX_set_ssl_version(SSL_CTX ctx, const SSL_METHOD meth)
655	{
656	STACK_OF(SSL_CIPHER) *sk;
657
658	if (IS_QUIC_CTX(ctx)) {
659	ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
660	return 0;
661	}
662
663	ctx->method = meth;
664
665	if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
666	ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
667	return 0;
668	}
669	sk = ssl_create_cipher_list(ctx,
670	ctx->tls13_ciphersuites,
671	&(ctx->cipher_list),
672	&(ctx->cipher_list_by_id),
673	OSSL_default_cipher_list(), ctx->cert);
674	if ((sk == NULL) \|\| (sk_SSL_CIPHER_num(sk) <= 0)) {
675	ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
676	return 0;
677	}
678	return 1;
679	}
680	#endif
681
682	SSL SSL_new(SSL_CTX ctx)
683	{
684	if (ctx == NULL) {
685	ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
686	return NULL;
687	}
688	if (ctx->method == NULL) {
689	ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
690	return NULL;
691	}
692	return ctx->method->ssl_new(ctx);
693	}
694
695	int ossl_ssl_init(SSL ssl, SSL_CTX ctx, const SSL_METHOD *method, int type)
696	{
697	ssl->type = type;
698
699	ssl->lock = CRYPTO_THREAD_lock_new();
700	if (ssl->lock == NULL)
701	return 0;
702
703	if (!CRYPTO_NEW_REF(&ssl->references, 1)) {
704	CRYPTO_THREAD_lock_free(ssl->lock);
705	return 0;
706	}
707
708	if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, ssl, &ssl->ex_data)) {
709	CRYPTO_THREAD_lock_free(ssl->lock);
710	CRYPTO_FREE_REF(&ssl->references);
711	ssl->lock = NULL;
712	return 0;
713	}
714
715	SSL_CTX_up_ref(ctx);
716	ssl->ctx = ctx;
717
718	ssl->defltmeth = ssl->method = method;
719
720	return 1;
721	}
722
723	SSL ossl_ssl_connection_new_int(SSL_CTX ctx, const SSL_METHOD *method)
724	{
725	SSL_CONNECTION *s;
726	SSL *ssl;
727
728	s = OPENSSL_zalloc(sizeof(*s));
729	if (s == NULL)
730	return NULL;
731
732	ssl = &s->ssl;
733	if (!ossl_ssl_init(ssl, ctx, method, SSL_TYPE_SSL_CONNECTION)) {
734	OPENSSL_free(s);
735	s = NULL;
736	ssl = NULL;
737	goto sslerr;
738	}
739
740	RECORD_LAYER_init(&s->rlayer, s);
741
742	s->options = ctx->options;
743
744	s->dane.flags = ctx->dane.flags;
745	if (method->version == ctx->method->version) {
746	s->min_proto_version = ctx->min_proto_version;
747	s->max_proto_version = ctx->max_proto_version;
748	}
749
750	s->mode = ctx->mode;
751	s->max_cert_list = ctx->max_cert_list;
752	s->max_early_data = ctx->max_early_data;
753	s->recv_max_early_data = ctx->recv_max_early_data;
754
755	s->num_tickets = ctx->num_tickets;
756	s->pha_enabled = ctx->pha_enabled;
757
758	/* Shallow copy of the ciphersuites stack */
759	s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
760	if (s->tls13_ciphersuites == NULL)
761	goto cerr;
762
763	/*
764	* Earlier library versions used to copy the pointer to the CERT, not
765	* its contents; only when setting new parameters for the per-SSL
766	* copy, ssl_cert_new would be called (and the direct reference to
767	* the per-SSL_CTX settings would be lost, but those still were
768	* indirectly accessed for various purposes, and for that reason they
769	* used to be known as s->ctx->default_cert). Now we don't look at the
770	* SSL_CTX's CERT after having duplicated it once.
771	*/
772	s->cert = ssl_cert_dup(ctx->cert);
773	if (s->cert == NULL)
774	goto sslerr;
775
776	RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
777	s->msg_callback = ctx->msg_callback;
778	s->msg_callback_arg = ctx->msg_callback_arg;
779	s->verify_mode = ctx->verify_mode;
780	s->not_resumable_session_cb = ctx->not_resumable_session_cb;
781	s->rlayer.record_padding_cb = ctx->record_padding_cb;
782	s->rlayer.record_padding_arg = ctx->record_padding_arg;
783	s->rlayer.block_padding = ctx->block_padding;
784	s->sid_ctx_length = ctx->sid_ctx_length;
785	if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
786	goto err;
787	memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
788	s->verify_callback = ctx->default_verify_callback;
789	s->generate_session_id = ctx->generate_session_id;
790
791	s->param = X509_VERIFY_PARAM_new();
792	if (s->param == NULL)
793	goto asn1err;
794	X509_VERIFY_PARAM_inherit(s->param, ctx->param);
795	s->quiet_shutdown = IS_QUIC_CTX(ctx) ? 0 : ctx->quiet_shutdown;
796
797	if (!IS_QUIC_CTX(ctx))
798	s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
799
800	s->max_send_fragment = ctx->max_send_fragment;
801	s->split_send_fragment = ctx->split_send_fragment;
802	s->max_pipelines = ctx->max_pipelines;
803	s->rlayer.default_read_buf_len = ctx->default_read_buf_len;
804
805	s->ext.debug_cb = 0;
806	s->ext.debug_arg = NULL;
807	s->ext.ticket_expected = 0;
808	s->ext.status_type = ctx->ext.status_type;
809	s->ext.status_expected = 0;
810	s->ext.ocsp.ids = NULL;
811	s->ext.ocsp.exts = NULL;
812	s->ext.ocsp.resp = NULL;
813	s->ext.ocsp.resp_len = 0;
814	SSL_CTX_up_ref(ctx);
815	s->session_ctx = ctx;
816	if (ctx->ext.ecpointformats) {
817	s->ext.ecpointformats =
818	OPENSSL_memdup(ctx->ext.ecpointformats,
819	ctx->ext.ecpointformats_len);
820	if (!s->ext.ecpointformats) {
821	s->ext.ecpointformats_len = 0;
822	goto err;
823	}
824	s->ext.ecpointformats_len =
825	ctx->ext.ecpointformats_len;
826	}
827	if (ctx->ext.supportedgroups) {
828	s->ext.supportedgroups =
829	OPENSSL_memdup(ctx->ext.supportedgroups,
830	ctx->ext.supportedgroups_len
831	* sizeof(*ctx->ext.supportedgroups));
832	if (!s->ext.supportedgroups) {
833	s->ext.supportedgroups_len = 0;
834	goto err;
835	}
836	s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
837	}
838
839	#ifndef OPENSSL_NO_NEXTPROTONEG
840	s->ext.npn = NULL;
841	#endif
842
843	if (ctx->ext.alpn != NULL) {
844	s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
845	if (s->ext.alpn == NULL) {
846	s->ext.alpn_len = 0;
847	goto err;
848	}
849	memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
850	s->ext.alpn_len = ctx->ext.alpn_len;
851	}
852
853	s->verified_chain = NULL;
854	s->verify_result = X509_V_OK;
855
856	s->default_passwd_callback = ctx->default_passwd_callback;
857	s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
858
859	s->key_update = SSL_KEY_UPDATE_NONE;
860
861	if (!IS_QUIC_CTX(ctx)) {
862	s->allow_early_data_cb = ctx->allow_early_data_cb;
863	s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
864	}
865
866	if (!method->ssl_init(ssl))
867	goto sslerr;
868
869	s->server = (method->ssl_accept == ssl_undefined_function) ? 0 : 1;
870
871	if (!method->ssl_reset(ssl))
872	goto sslerr;
873
874	#ifndef OPENSSL_NO_PSK
875	s->psk_client_callback = ctx->psk_client_callback;
876	s->psk_server_callback = ctx->psk_server_callback;
877	#endif
878	s->psk_find_session_cb = ctx->psk_find_session_cb;
879	s->psk_use_session_cb = ctx->psk_use_session_cb;
880
881	s->async_cb = ctx->async_cb;
882	s->async_cb_arg = ctx->async_cb_arg;
883
884	s->job = NULL;
885
886	#ifndef OPENSSL_NO_COMP_ALG
887	memcpy(s->cert_comp_prefs, ctx->cert_comp_prefs, sizeof(s->cert_comp_prefs));
888	#endif
889	if (ctx->client_cert_type != NULL) {
890	s->client_cert_type = OPENSSL_memdup(ctx->client_cert_type,
891	ctx->client_cert_type_len);
892	if (s->client_cert_type == NULL)
893	goto sslerr;
894	s->client_cert_type_len = ctx->client_cert_type_len;
895	}
896	if (ctx->server_cert_type != NULL) {
897	s->server_cert_type = OPENSSL_memdup(ctx->server_cert_type,
898	ctx->server_cert_type_len);
899	if (s->server_cert_type == NULL)
900	goto sslerr;
901	s->server_cert_type_len = ctx->server_cert_type_len;
902	}
903
904	#ifndef OPENSSL_NO_CT
905	if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
906	ctx->ct_validation_callback_arg))
907	goto sslerr;
908	#endif
909
910	s->ssl_pkey_num = SSL_PKEY_NUM + ctx->sigalg_list_len;
911	return ssl;
912	cerr:
913	ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
914	goto err;
915	asn1err:
916	ERR_raise(ERR_LIB_SSL, ERR_R_ASN1_LIB);
917	goto err;
918	sslerr:
919	ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
920	err:
921	SSL_free(ssl);
922	return NULL;
923	}
924
925	SSL ossl_ssl_connection_new(SSL_CTX ctx)
926	{
927	return ossl_ssl_connection_new_int(ctx, ctx->method);
928	}
929
930	int SSL_is_dtls(const SSL *s)
931	{
932	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
933
934	#ifndef OPENSSL_NO_QUIC
935	if (s->type == SSL_TYPE_QUIC_CONNECTION \|\| s->type == SSL_TYPE_QUIC_XSO)
936	return 0;
937	#endif
938
939	if (sc == NULL)
940	return 0;
941
942	return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
943	}
944
945	int SSL_is_tls(const SSL *s)
946	{
947	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
948
949	#ifndef OPENSSL_NO_QUIC
950	if (s->type == SSL_TYPE_QUIC_CONNECTION \|\| s->type == SSL_TYPE_QUIC_XSO)
951	return 0;
952	#endif
953
954	if (sc == NULL)
955	return 0;
956
957	return SSL_CONNECTION_IS_DTLS(sc) ? 0 : 1;
958	}
959
960	int SSL_is_quic(const SSL *s)
961	{
962	#ifndef OPENSSL_NO_QUIC
963	if (s->type == SSL_TYPE_QUIC_CONNECTION \|\| s->type == SSL_TYPE_QUIC_XSO)
964	return 1;
965	#endif
966	return 0;
967	}
968
969	int SSL_up_ref(SSL *s)
970	{
971	int i;
972
973	if (CRYPTO_UP_REF(&s->references, &i) <= 0)
974	return 0;
975
976	REF_PRINT_COUNT("SSL", s);
977	REF_ASSERT_ISNT(i < 2);
978	return ((i > 1) ? 1 : 0);
979	}
980
981	int SSL_CTX_set_session_id_context(SSL_CTX ctx, const unsigned char sid_ctx,
982	unsigned int sid_ctx_len)
983	{
984	if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
985	ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
986	return 0;
987	}
988	ctx->sid_ctx_length = sid_ctx_len;
989	memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
990
991	return 1;
992	}
993
994	int SSL_set_session_id_context(SSL ssl, const unsigned char sid_ctx,
995	unsigned int sid_ctx_len)
996	{
997	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
998
999	if (sc == NULL)
1000	return 0;
1001
1002	if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
1003	ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
1004	return 0;
1005	}
1006	sc->sid_ctx_length = sid_ctx_len;
1007	memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
1008
1009	return 1;
1010	}
1011
1012	int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
1013	{
1014	if (!CRYPTO_THREAD_write_lock(ctx->lock))
1015	return 0;
1016	ctx->generate_session_id = cb;
1017	CRYPTO_THREAD_unlock(ctx->lock);
1018	return 1;
1019	}
1020
1021	int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
1022	{
1023	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1024
1025	if (sc == NULL \|\| !CRYPTO_THREAD_write_lock(ssl->lock))
1026	return 0;
1027	sc->generate_session_id = cb;
1028	CRYPTO_THREAD_unlock(ssl->lock);
1029	return 1;
1030	}
1031
1032	int SSL_has_matching_session_id(const SSL ssl, const unsigned char id,
1033	unsigned int id_len)
1034	{
1035	/*
1036	* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
1037	* we can "construct" a session to give us the desired check - i.e. to
1038	* find if there's a session in the hash table that would conflict with
1039	* any new session built out of this id/id_len and the ssl_version in use
1040	* by this SSL.
1041	*/
1042	SSL_SESSION r, *p;
1043	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
1044
1045	if (sc == NULL \|\| id_len > sizeof(r.session_id))
1046	return 0;
1047
1048	r.ssl_version = sc->version;
1049	r.session_id_length = id_len;
1050	memcpy(r.session_id, id, id_len);
1051
1052	if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
1053	return 0;
1054	p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1055	CRYPTO_THREAD_unlock(sc->session_ctx->lock);
1056	return (p != NULL);
1057	}
1058
1059	int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
1060	{
1061	return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1062	}
1063
1064	int SSL_set_purpose(SSL *s, int purpose)
1065	{
1066	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1067
1068	if (sc == NULL)
1069	return 0;
1070
1071	return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
1072	}
1073
1074	int SSL_CTX_set_trust(SSL_CTX *s, int trust)
1075	{
1076	return X509_VERIFY_PARAM_set_trust(s->param, trust);
1077	}
1078
1079	int SSL_set_trust(SSL *s, int trust)
1080	{
1081	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1082
1083	if (sc == NULL)
1084	return 0;
1085
1086	return X509_VERIFY_PARAM_set_trust(sc->param, trust);
1087	}
1088
1089	int SSL_set1_host(SSL s, const char hostname)
1090	{
1091	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1092
1093	if (sc == NULL)
1094	return 0;
1095
1096	/* If a hostname is provided and parses as an IP address,
1097	* treat it as such. */
1098	if (hostname != NULL
1099	&& X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
1100	return 1;
1101
1102	return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
1103	}
1104
1105	int SSL_add1_host(SSL s, const char hostname)
1106	{
1107	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1108
1109	if (sc == NULL)
1110	return 0;
1111
1112	/* If a hostname is provided and parses as an IP address,
1113	* treat it as such. */
1114	if (hostname)
1115	{
1116	ASN1_OCTET_STRING *ip;
1117	char *old_ip;
1118
1119	ip = a2i_IPADDRESS(hostname);
1120	if (ip) {
1121	/* We didn't want it; only to check if it is an IP address */
1122	ASN1_OCTET_STRING_free(ip);
1123
1124	old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
1125	if (old_ip)
1126	{
1127	OPENSSL_free(old_ip);
1128	/* There can be only one IP address */
1129	return 0;
1130	}
1131
1132	return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
1133	}
1134	}
1135
1136	return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
1137	}
1138
1139	void SSL_set_hostflags(SSL *s, unsigned int flags)
1140	{
1141	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1142
1143	if (sc == NULL)
1144	return;
1145
1146	X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
1147	}
1148
1149	const char SSL_get0_peername(SSL s)
1150	{
1151	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1152
1153	if (sc == NULL)
1154	return NULL;
1155
1156	return X509_VERIFY_PARAM_get0_peername(sc->param);
1157	}
1158
1159	int SSL_CTX_dane_enable(SSL_CTX *ctx)
1160	{
1161	return dane_ctx_enable(&ctx->dane);
1162	}
1163
1164	unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1165	{
1166	unsigned long orig = ctx->dane.flags;
1167
1168	ctx->dane.flags \|= flags;
1169	return orig;
1170	}
1171
1172	unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1173	{
1174	unsigned long orig = ctx->dane.flags;
1175
1176	ctx->dane.flags &= ~flags;
1177	return orig;
1178	}
1179
1180	int SSL_dane_enable(SSL s, const char basedomain)
1181	{
1182	SSL_DANE *dane;
1183	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1184
1185	if (sc == NULL)
1186	return 0;
1187
1188	dane = &sc->dane;
1189	if (s->ctx->dane.mdmax == 0) {
1190	ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1191	return 0;
1192	}
1193	if (dane->trecs != NULL) {
1194	ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1195	return 0;
1196	}
1197
1198	/*
1199	* Default SNI name. This rejects empty names, while set1_host below
1200	* accepts them and disables hostname checks. To avoid side-effects with
1201	* invalid input, set the SNI name first.
1202	*/
1203	if (sc->ext.hostname == NULL) {
1204	if (!SSL_set_tlsext_host_name(s, basedomain)) {
1205	ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1206	return -1;
1207	}
1208	}
1209
1210	/* Primary RFC6125 reference identifier */
1211	if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
1212	ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1213	return -1;
1214	}
1215
1216	dane->mdpth = -1;
1217	dane->pdpth = -1;
1218	dane->dctx = &s->ctx->dane;
1219	dane->trecs = sk_danetls_record_new_null();
1220
1221	if (dane->trecs == NULL) {
1222	ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
1223	return -1;
1224	}
1225	return 1;
1226	}
1227
1228	unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1229	{
1230	unsigned long orig;
1231	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1232
1233	if (sc == NULL)
1234	return 0;
1235
1236	orig = sc->dane.flags;
1237
1238	sc->dane.flags \|= flags;
1239	return orig;
1240	}
1241
1242	unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1243	{
1244	unsigned long orig;
1245	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1246
1247	if (sc == NULL)
1248	return 0;
1249
1250	orig = sc->dane.flags;
1251
1252	sc->dane.flags &= ~flags;
1253	return orig;
1254	}
1255
1256	int SSL_get0_dane_authority(SSL s, X509 mcert, EVP_PKEY *mspki)
1257	{
1258	SSL_DANE *dane;
1259	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1260
1261	if (sc == NULL)
1262	return -1;
1263
1264	dane = &sc->dane;
1265
1266	if (!DANETLS_ENABLED(dane) \|\| sc->verify_result != X509_V_OK)
1267	return -1;
1268	if (dane->mtlsa) {
1269	if (mcert)
1270	*mcert = dane->mcert;
1271	if (mspki)
1272	*mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1273	}
1274	return dane->mdpth;
1275	}
1276
1277	int SSL_get0_dane_tlsa(SSL s, uint8_t usage, uint8_t *selector,
1278	uint8_t mtype, const unsigned char data, size_t dlen)
1279	{
1280	SSL_DANE *dane;
1281	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1282
1283	if (sc == NULL)
1284	return -1;
1285
1286	dane = &sc->dane;
1287
1288	if (!DANETLS_ENABLED(dane) \|\| sc->verify_result != X509_V_OK)
1289	return -1;
1290	if (dane->mtlsa) {
1291	if (usage)
1292	*usage = dane->mtlsa->usage;
1293	if (selector)
1294	*selector = dane->mtlsa->selector;
1295	if (mtype)
1296	*mtype = dane->mtlsa->mtype;
1297	if (data)
1298	*data = dane->mtlsa->data;
1299	if (dlen)
1300	*dlen = dane->mtlsa->dlen;
1301	}
1302	return dane->mdpth;
1303	}
1304
1305	SSL_DANE SSL_get0_dane(SSL s)
1306	{
1307	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1308
1309	if (sc == NULL)
1310	return NULL;
1311
1312	return &sc->dane;
1313	}
1314
1315	int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1316	uint8_t mtype, const unsigned char *data, size_t dlen)
1317	{
1318	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1319
1320	if (sc == NULL)
1321	return 0;
1322
1323	return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
1324	}
1325
1326	int SSL_CTX_dane_mtype_set(SSL_CTX ctx, const EVP_MD md, uint8_t mtype,
1327	uint8_t ord)
1328	{
1329	return dane_mtype_set(&ctx->dane, md, mtype, ord);
1330	}
1331
1332	int SSL_CTX_set1_param(SSL_CTX ctx, X509_VERIFY_PARAM vpm)
1333	{
1334	return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1335	}
1336
1337	int SSL_set1_param(SSL ssl, X509_VERIFY_PARAM vpm)
1338	{
1339	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1340
1341	if (sc == NULL)
1342	return 0;
1343
1344	return X509_VERIFY_PARAM_set1(sc->param, vpm);
1345	}
1346
1347	X509_VERIFY_PARAM SSL_CTX_get0_param(SSL_CTX ctx)
1348	{
1349	return ctx->param;
1350	}
1351
1352	X509_VERIFY_PARAM SSL_get0_param(SSL ssl)
1353	{
1354	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1355
1356	if (sc == NULL)
1357	return NULL;
1358
1359	return sc->param;
1360	}
1361
1362	void SSL_certs_clear(SSL *s)
1363	{
1364	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1365
1366	if (sc == NULL)
1367	return;
1368
1369	ssl_cert_clear_certs(sc->cert);
1370	}
1371
1372	void SSL_free(SSL *s)
1373	{
1374	int i;
1375
1376	if (s == NULL)
1377	return;
1378	CRYPTO_DOWN_REF(&s->references, &i);
1379	REF_PRINT_COUNT("SSL", s);
1380	if (i > 0)
1381	return;
1382	REF_ASSERT_ISNT(i < 0);
1383
1384	CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1385
1386	if (s->method != NULL)
1387	s->method->ssl_free(s);
1388
1389	SSL_CTX_free(s->ctx);
1390	CRYPTO_THREAD_lock_free(s->lock);
1391	CRYPTO_FREE_REF(&s->references);
1392
1393	OPENSSL_free(s);
1394	}
1395
1396	void ossl_ssl_connection_free(SSL *ssl)
1397	{
1398	SSL_CONNECTION *s;
1399
1400	s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1401	if (s == NULL)
1402	return;
1403
1404	X509_VERIFY_PARAM_free(s->param);
1405	dane_final(&s->dane);
1406
1407	/* Ignore return value */
1408	ssl_free_wbio_buffer(s);
1409
1410	/* Ignore return value */
1411	RECORD_LAYER_clear(&s->rlayer);
1412
1413	BUF_MEM_free(s->init_buf);
1414
1415	/* add extra stuff */
1416	sk_SSL_CIPHER_free(s->cipher_list);
1417	sk_SSL_CIPHER_free(s->cipher_list_by_id);
1418	sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1419	sk_SSL_CIPHER_free(s->peer_ciphers);
1420
1421	/* Make the next call work :-) */
1422	if (s->session != NULL) {
1423	ssl_clear_bad_session(s);
1424	SSL_SESSION_free(s->session);
1425	}
1426	SSL_SESSION_free(s->psksession);
1427	OPENSSL_free(s->psksession_id);
1428
1429	ssl_cert_free(s->cert);
1430	OPENSSL_free(s->shared_sigalgs);
1431	/* Free up if allocated */
1432
1433	OPENSSL_free(s->ext.hostname);
1434	SSL_CTX_free(s->session_ctx);
1435	OPENSSL_free(s->ext.ecpointformats);
1436	OPENSSL_free(s->ext.peer_ecpointformats);
1437	OPENSSL_free(s->ext.supportedgroups);
1438	OPENSSL_free(s->ext.peer_supportedgroups);
1439	sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1440	#ifndef OPENSSL_NO_OCSP
1441	sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1442	#endif
1443	#ifndef OPENSSL_NO_CT
1444	SCT_LIST_free(s->scts);
1445	OPENSSL_free(s->ext.scts);
1446	#endif
1447	OPENSSL_free(s->ext.ocsp.resp);
1448	OPENSSL_free(s->ext.alpn);
1449	OPENSSL_free(s->ext.tls13_cookie);
1450	if (s->clienthello != NULL)
1451	OPENSSL_free(s->clienthello->pre_proc_exts);
1452	OPENSSL_free(s->clienthello);
1453	OPENSSL_free(s->pha_context);
1454	EVP_MD_CTX_free(s->pha_dgst);
1455
1456	sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1457	sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1458
1459	OPENSSL_free(s->client_cert_type);
1460	OPENSSL_free(s->server_cert_type);
1461
1462	OSSL_STACK_OF_X509_free(s->verified_chain);
1463
1464	if (ssl->method != NULL)
1465	ssl->method->ssl_deinit(ssl);
1466
1467	ASYNC_WAIT_CTX_free(s->waitctx);
1468
1469	#if !defined(OPENSSL_NO_NEXTPROTONEG)
1470	OPENSSL_free(s->ext.npn);
1471	#endif
1472
1473	#ifndef OPENSSL_NO_SRTP
1474	sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1475	#endif
1476
1477	/*
1478	* We do this late. We want to ensure that any other references we held to
1479	* these BIOs are freed first before we call BIO_free_all(), because
1480	* BIO_free_all() will only free each BIO in the chain if the number of
1481	* references to the first BIO have dropped to 0
1482	*/
1483	BIO_free_all(s->wbio);
1484	s->wbio = NULL;
1485	BIO_free_all(s->rbio);
1486	s->rbio = NULL;
1487	OPENSSL_free(s->s3.tmp.valid_flags);
1488	}
1489
1490	void SSL_set0_rbio(SSL s, BIO rbio)
1491	{
1492	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1493
1494	#ifndef OPENSSL_NO_QUIC
1495	if (IS_QUIC(s)) {
1496	ossl_quic_conn_set0_net_rbio(s, rbio);
1497	return;
1498	}
1499	#endif
1500
1501	if (sc == NULL)
1502	return;
1503
1504	BIO_free_all(sc->rbio);
1505	sc->rbio = rbio;
1506	sc->rlayer.rrlmethod->set1_bio(sc->rlayer.rrl, sc->rbio);
1507	}
1508
1509	void SSL_set0_wbio(SSL s, BIO wbio)
1510	{
1511	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1512
1513	#ifndef OPENSSL_NO_QUIC
1514	if (IS_QUIC(s)) {
1515	ossl_quic_conn_set0_net_wbio(s, wbio);
1516	return;
1517	}
1518	#endif
1519
1520	if (sc == NULL)
1521	return;
1522
1523	/*
1524	* If the output buffering BIO is still in place, remove it
1525	*/
1526	if (sc->bbio != NULL)
1527	sc->wbio = BIO_pop(sc->wbio);
1528
1529	BIO_free_all(sc->wbio);
1530	sc->wbio = wbio;
1531
1532	/* Re-attach \|bbio\| to the new \|wbio\|. */
1533	if (sc->bbio != NULL)
1534	sc->wbio = BIO_push(sc->bbio, sc->wbio);
1535
1536	sc->rlayer.wrlmethod->set1_bio(sc->rlayer.wrl, sc->wbio);
1537	}
1538
1539	void SSL_set_bio(SSL s, BIO rbio, BIO *wbio)
1540	{
1541	/*
1542	* For historical reasons, this function has many different cases in
1543	* ownership handling.
1544	*/
1545
1546	/* If nothing has changed, do nothing */
1547	if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1548	return;
1549
1550	/*
1551	* If the two arguments are equal then one fewer reference is granted by the
1552	* caller than we want to take
1553	*/
1554	if (rbio != NULL && rbio == wbio)
1555	BIO_up_ref(rbio);
1556
1557	/*
1558	* If only the wbio is changed only adopt one reference.
1559	*/
1560	if (rbio == SSL_get_rbio(s)) {
1561	SSL_set0_wbio(s, wbio);
1562	return;
1563	}
1564	/*
1565	* There is an asymmetry here for historical reasons. If only the rbio is
1566	* changed AND the rbio and wbio were originally different, then we only
1567	* adopt one reference.
1568	*/
1569	if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1570	SSL_set0_rbio(s, rbio);
1571	return;
1572	}
1573
1574	/* Otherwise, adopt both references. */
1575	SSL_set0_rbio(s, rbio);
1576	SSL_set0_wbio(s, wbio);
1577	}
1578
1579	BIO SSL_get_rbio(const SSL s)
1580	{
1581	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1582
1583	#ifndef OPENSSL_NO_QUIC
1584	if (IS_QUIC(s))
1585	return ossl_quic_conn_get_net_rbio(s);
1586	#endif
1587
1588	if (sc == NULL)
1589	return NULL;
1590
1591	return sc->rbio;
1592	}
1593
1594	BIO SSL_get_wbio(const SSL s)
1595	{
1596	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1597
1598	#ifndef OPENSSL_NO_QUIC
1599	if (IS_QUIC(s))
1600	return ossl_quic_conn_get_net_wbio(s);
1601	#endif
1602
1603	if (sc == NULL)
1604	return NULL;
1605
1606	if (sc->bbio != NULL) {
1607	/*
1608	* If \|bbio\| is active, the true caller-configured BIO is its
1609	* \|next_bio\|.
1610	*/
1611	return BIO_next(sc->bbio);
1612	}
1613	return sc->wbio;
1614	}
1615
1616	int SSL_get_fd(const SSL *s)
1617	{
1618	return SSL_get_rfd(s);
1619	}
1620
1621	int SSL_get_rfd(const SSL *s)
1622	{
1623	int ret = -1;
1624	BIO b, r;
1625
1626	b = SSL_get_rbio(s);
1627	r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1628	if (r != NULL)
1629	BIO_get_fd(r, &ret);
1630	return ret;
1631	}
1632
1633	int SSL_get_wfd(const SSL *s)
1634	{
1635	int ret = -1;
1636	BIO b, r;
1637
1638	b = SSL_get_wbio(s);
1639	r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1640	if (r != NULL)
1641	BIO_get_fd(r, &ret);
1642	return ret;
1643	}
1644
1645	#ifndef OPENSSL_NO_SOCK
1646	static const BIO_METHOD fd_method(SSL s)
1647	{
1648	#ifndef OPENSSL_NO_DGRAM
1649	if (IS_QUIC(s))
1650	return BIO_s_datagram();
1651	#endif
1652
1653	return BIO_s_socket();
1654	}
1655
1656	int SSL_set_fd(SSL *s, int fd)
1657	{
1658	int ret = 0;
1659	BIO *bio = NULL;
1660
1661	if (s->type == SSL_TYPE_QUIC_XSO) {
1662	ERR_raise(ERR_LIB_SSL, SSL_R_CONN_USE_ONLY);
1663	goto err;
1664	}
1665
1666	bio = BIO_new(fd_method(s));
1667
1668	if (bio == NULL) {
1669	ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1670	goto err;
1671	}
1672	BIO_set_fd(bio, fd, BIO_NOCLOSE);
1673	SSL_set_bio(s, bio, bio);
1674	#ifndef OPENSSL_NO_KTLS
1675	/*
1676	* The new socket is created successfully regardless of ktls_enable.
1677	* ktls_enable doesn't change any functionality of the socket, except
1678	* changing the setsockopt to enable the processing of ktls_start.
1679	* Thus, it is not a problem to call it for non-TLS sockets.
1680	*/
1681	ktls_enable(fd);
1682	#endif /* OPENSSL_NO_KTLS */
1683	ret = 1;
1684	err:
1685	return ret;
1686	}
1687
1688	int SSL_set_wfd(SSL *s, int fd)
1689	{
1690	BIO *rbio = SSL_get_rbio(s);
1691	int desired_type = IS_QUIC(s) ? BIO_TYPE_DGRAM : BIO_TYPE_SOCKET;
1692
1693	if (s->type == SSL_TYPE_QUIC_XSO) {
1694	ERR_raise(ERR_LIB_SSL, SSL_R_CONN_USE_ONLY);
1695	return 0;
1696	}
1697
1698	if (rbio == NULL \|\| BIO_method_type(rbio) != desired_type
1699	\|\| (int)BIO_get_fd(rbio, NULL) != fd) {
1700	BIO *bio = BIO_new(fd_method(s));
1701
1702	if (bio == NULL) {
1703	ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1704	return 0;
1705	}
1706	BIO_set_fd(bio, fd, BIO_NOCLOSE);
1707	SSL_set0_wbio(s, bio);
1708	#ifndef OPENSSL_NO_KTLS
1709	/*
1710	* The new socket is created successfully regardless of ktls_enable.
1711	* ktls_enable doesn't change any functionality of the socket, except
1712	* changing the setsockopt to enable the processing of ktls_start.
1713	* Thus, it is not a problem to call it for non-TLS sockets.
1714	*/
1715	ktls_enable(fd);
1716	#endif /* OPENSSL_NO_KTLS */
1717	} else {
1718	BIO_up_ref(rbio);
1719	SSL_set0_wbio(s, rbio);
1720	}
1721	return 1;
1722	}
1723
1724	int SSL_set_rfd(SSL *s, int fd)
1725	{
1726	BIO *wbio = SSL_get_wbio(s);
1727	int desired_type = IS_QUIC(s) ? BIO_TYPE_DGRAM : BIO_TYPE_SOCKET;
1728
1729	if (s->type == SSL_TYPE_QUIC_XSO) {
1730	ERR_raise(ERR_LIB_SSL, SSL_R_CONN_USE_ONLY);
1731	return 0;
1732	}
1733
1734	if (wbio == NULL \|\| BIO_method_type(wbio) != desired_type
1735	\|\| ((int)BIO_get_fd(wbio, NULL) != fd)) {
1736	BIO *bio = BIO_new(fd_method(s));
1737
1738	if (bio == NULL) {
1739	ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1740	return 0;
1741	}
1742	BIO_set_fd(bio, fd, BIO_NOCLOSE);
1743	SSL_set0_rbio(s, bio);
1744	} else {
1745	BIO_up_ref(wbio);
1746	SSL_set0_rbio(s, wbio);
1747	}
1748
1749	return 1;
1750	}
1751	#endif
1752
1753	/* return length of latest Finished message we sent, copy to 'buf' */
1754	size_t SSL_get_finished(const SSL s, void buf, size_t count)
1755	{
1756	size_t ret = 0;
1757	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1758
1759	if (sc == NULL)
1760	return 0;
1761
1762	ret = sc->s3.tmp.finish_md_len;
1763	if (count > ret)
1764	count = ret;
1765	memcpy(buf, sc->s3.tmp.finish_md, count);
1766	return ret;
1767	}
1768
1769	/* return length of latest Finished message we expected, copy to 'buf' */
1770	size_t SSL_get_peer_finished(const SSL s, void buf, size_t count)
1771	{
1772	size_t ret = 0;
1773	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1774
1775	if (sc == NULL)
1776	return 0;
1777
1778	ret = sc->s3.tmp.peer_finish_md_len;
1779	if (count > ret)
1780	count = ret;
1781	memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1782	return ret;
1783	}
1784
1785	int SSL_get_verify_mode(const SSL *s)
1786	{
1787	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1788
1789	if (sc == NULL)
1790	return 0;
1791
1792	return sc->verify_mode;
1793	}
1794
1795	int SSL_get_verify_depth(const SSL *s)
1796	{
1797	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1798
1799	if (sc == NULL)
1800	return 0;
1801
1802	return X509_VERIFY_PARAM_get_depth(sc->param);
1803	}
1804
1805	int (SSL_get_verify_callback(const SSL s)) (int, X509_STORE_CTX *) {
1806	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1807
1808	if (sc == NULL)
1809	return NULL;
1810
1811	return sc->verify_callback;
1812	}
1813
1814	int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1815	{
1816	return ctx->verify_mode;
1817	}
1818
1819	int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1820	{
1821	return X509_VERIFY_PARAM_get_depth(ctx->param);
1822	}
1823
1824	int (SSL_CTX_get_verify_callback(const SSL_CTX ctx)) (int, X509_STORE_CTX *) {
1825	return ctx->default_verify_callback;
1826	}
1827
1828	void SSL_set_verify(SSL *s, int mode,
1829	int (callback) (int ok, X509_STORE_CTX ctx))
1830	{
1831	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1832
1833	if (sc == NULL)
1834	return;
1835
1836	sc->verify_mode = mode;
1837	if (callback != NULL)
1838	sc->verify_callback = callback;
1839	}
1840
1841	void SSL_set_verify_depth(SSL *s, int depth)
1842	{
1843	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1844
1845	if (sc == NULL)
1846	return;
1847
1848	X509_VERIFY_PARAM_set_depth(sc->param, depth);
1849	}
1850
1851	void SSL_set_read_ahead(SSL *s, int yes)
1852	{
1853	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
1854	OSSL_PARAM options[2], *opts = options;
1855
1856	if (sc == NULL)
1857	return;
1858
1859	RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1860
1861	*opts++ = OSSL_PARAM_construct_int(OSSL_LIBSSL_RECORD_LAYER_PARAM_READ_AHEAD,
1862	&sc->rlayer.read_ahead);
1863	*opts = OSSL_PARAM_construct_end();
1864
1865	/* Ignore return value */
1866	sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
1867	}
1868
1869	int SSL_get_read_ahead(const SSL *s)
1870	{
1871	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
1872
1873	if (sc == NULL)
1874	return 0;
1875
1876	return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1877	}
1878
1879	int SSL_pending(const SSL *s)
1880	{
1881	size_t pending = s->method->ssl_pending(s);
1882
1883	/*
1884	* SSL_pending cannot work properly if read-ahead is enabled
1885	* (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1886	* impossible to fix since SSL_pending cannot report errors that may be
1887	* observed while scanning the new data. (Note that SSL_pending() is
1888	* often used as a boolean value, so we'd better not return -1.)
1889	*
1890	* SSL_pending also cannot work properly if the value >INT_MAX. In that case
1891	* we just return INT_MAX.
1892	*/
1893	return pending < INT_MAX ? (int)pending : INT_MAX;
1894	}
1895
1896	int SSL_has_pending(const SSL *s)
1897	{
1898	/*
1899	* Similar to SSL_pending() but returns a 1 to indicate that we have
1900	* processed or unprocessed data available or 0 otherwise (as opposed to the
1901	* number of bytes available). Unlike SSL_pending() this will take into
1902	* account read_ahead data. A 1 return simply indicates that we have data.
1903	* That data may not result in any application data, or we may fail to parse
1904	* the records for some reason.
1905	*/
1906	const SSL_CONNECTION *sc;
1907
1908	#ifndef OPENSSL_NO_QUIC
1909	if (IS_QUIC(s))
1910	return ossl_quic_has_pending(s);
1911	#endif
1912
1913	sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1914
1915	/* Check buffered app data if any first */
1916	if (SSL_CONNECTION_IS_DTLS(sc)) {
1917	TLS_RECORD *rdata;
1918	pitem item, iter;
1919
1920	iter = pqueue_iterator(sc->rlayer.d->buffered_app_data);
1921	while ((item = pqueue_next(&iter)) != NULL) {
1922	rdata = item->data;
1923	if (rdata->length > 0)
1924	return 1;
1925	}
1926	}
1927
1928	if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1929	return 1;
1930
1931	return RECORD_LAYER_read_pending(&sc->rlayer);
1932	}
1933
1934	X509 SSL_get1_peer_certificate(const SSL s)
1935	{
1936	X509 *r = SSL_get0_peer_certificate(s);
1937
1938	if (r != NULL)
1939	X509_up_ref(r);
1940
1941	return r;
1942	}
1943
1944	X509 SSL_get0_peer_certificate(const SSL s)
1945	{
1946	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1947
1948	if (sc == NULL)
1949	return NULL;
1950
1951	if (sc->session == NULL)
1952	return NULL;
1953	else
1954	return sc->session->peer;
1955	}
1956
1957	STACK_OF(X509) SSL_get_peer_cert_chain(const SSL s)
1958	{
1959	STACK_OF(X509) *r;
1960	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1961
1962	if (sc == NULL)
1963	return NULL;
1964
1965	if (sc->session == NULL)
1966	r = NULL;
1967	else
1968	r = sc->session->peer_chain;
1969
1970	/*
1971	* If we are a client, cert_chain includes the peer's own certificate; if
1972	* we are a server, it does not.
1973	*/
1974
1975	return r;
1976	}
1977
1978	/*
1979	* Now in theory, since the calling process own 't' it should be safe to
1980	* modify. We need to be able to read f without being hassled
1981	*/
1982	int SSL_copy_session_id(SSL t, const SSL f)
1983	{
1984	int i;
1985	/* TODO(QUIC FUTURE): Not allowed for QUIC currently. */
1986	SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1987	const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1988
1989	if (tsc == NULL \|\| fsc == NULL)
1990	return 0;
1991
1992	/* Do we need to do SSL locking? */
1993	if (!SSL_set_session(t, SSL_get_session(f))) {
1994	return 0;
1995	}
1996
1997	/*
1998	* what if we are setup for one protocol version but want to talk another
1999	*/
2000	if (t->method != f->method) {
2001	t->method->ssl_deinit(t);
2002	t->method = f->method;
2003	if (t->method->ssl_init(t) == 0)
2004	return 0;
2005	}
2006
2007	CRYPTO_UP_REF(&fsc->cert->references, &i);
2008	ssl_cert_free(tsc->cert);
2009	tsc->cert = fsc->cert;
2010	if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
2011	return 0;
2012	}
2013
2014	return 1;
2015	}
2016
2017	/* Fix this so it checks all the valid key/cert options */
2018	int SSL_CTX_check_private_key(const SSL_CTX *ctx)
2019	{
2020	if ((ctx == NULL) \|\| (ctx->cert->key->x509 == NULL)) {
2021	ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
2022	return 0;
2023	}
2024	if (ctx->cert->key->privatekey == NULL) {
2025	ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
2026	return 0;
2027	}
2028	return X509_check_private_key
2029	(ctx->cert->key->x509, ctx->cert->key->privatekey);
2030	}
2031
2032	/* Fix this function so that it takes an optional type parameter */
2033	int SSL_check_private_key(const SSL *ssl)
2034	{
2035	const SSL_CONNECTION *sc;
2036
2037	if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
2038	ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
2039	return 0;
2040	}
2041	if (sc->cert->key->x509 == NULL) {
2042	ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
2043	return 0;
2044	}
2045	if (sc->cert->key->privatekey == NULL) {
2046	ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
2047	return 0;
2048	}
2049	return X509_check_private_key(sc->cert->key->x509,
2050	sc->cert->key->privatekey);
2051	}
2052
2053	int SSL_waiting_for_async(SSL *s)
2054	{
2055	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2056
2057	if (sc == NULL)
2058	return 0;
2059
2060	if (sc->job)
2061	return 1;
2062
2063	return 0;
2064	}
2065
2066	int SSL_get_all_async_fds(SSL s, OSSL_ASYNC_FD fds, size_t *numfds)
2067	{
2068	ASYNC_WAIT_CTX *ctx;
2069	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2070
2071	if (sc == NULL)
2072	return 0;
2073
2074	if ((ctx = sc->waitctx) == NULL)
2075	return 0;
2076	return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
2077	}
2078
2079	int SSL_get_changed_async_fds(SSL s, OSSL_ASYNC_FD addfd, size_t *numaddfds,
2080	OSSL_ASYNC_FD delfd, size_t numdelfds)
2081	{
2082	ASYNC_WAIT_CTX *ctx;
2083	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2084
2085	if (sc == NULL)
2086	return 0;
2087
2088	if ((ctx = sc->waitctx) == NULL)
2089	return 0;
2090	return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
2091	numdelfds);
2092	}
2093
2094	int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
2095	{
2096	ctx->async_cb = callback;
2097	return 1;
2098	}
2099
2100	int SSL_CTX_set_async_callback_arg(SSL_CTX ctx, void arg)
2101	{
2102	ctx->async_cb_arg = arg;
2103	return 1;
2104	}
2105
2106	int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
2107	{
2108	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2109
2110	if (sc == NULL)
2111	return 0;
2112
2113	sc->async_cb = callback;
2114	return 1;
2115	}
2116
2117	int SSL_set_async_callback_arg(SSL s, void arg)
2118	{
2119	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2120
2121	if (sc == NULL)
2122	return 0;
2123
2124	sc->async_cb_arg = arg;
2125	return 1;
2126	}
2127
2128	int SSL_get_async_status(SSL s, int status)
2129	{
2130	ASYNC_WAIT_CTX *ctx;
2131	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2132
2133	if (sc == NULL)
2134	return 0;
2135
2136	if ((ctx = sc->waitctx) == NULL)
2137	return 0;
2138	*status = ASYNC_WAIT_CTX_get_status(ctx);
2139	return 1;
2140	}
2141
2142	int SSL_accept(SSL *s)
2143	{
2144	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2145
2146	#ifndef OPENSSL_NO_QUIC
2147	if (IS_QUIC(s))
2148	return s->method->ssl_accept(s);
2149	#endif
2150
2151	if (sc == NULL)
2152	return 0;
2153
2154	if (sc->handshake_func == NULL) {
2155	/* Not properly initialized yet */
2156	SSL_set_accept_state(s);
2157	}
2158
2159	return SSL_do_handshake(s);
2160	}
2161
2162	int SSL_connect(SSL *s)
2163	{
2164	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2165
2166	#ifndef OPENSSL_NO_QUIC
2167	if (IS_QUIC(s))
2168	return s->method->ssl_connect(s);
2169	#endif
2170
2171	if (sc == NULL)
2172	return 0;
2173
2174	if (sc->handshake_func == NULL) {
2175	/* Not properly initialized yet */
2176	SSL_set_connect_state(s);
2177	}
2178
2179	return SSL_do_handshake(s);
2180	}
2181
2182	long SSL_get_default_timeout(const SSL *s)
2183	{
2184	return (long int)ossl_time2seconds(s->method->get_timeout());
2185	}
2186
2187	static int ssl_async_wait_ctx_cb(void *arg)
2188	{
2189	SSL s = (SSL )arg;
2190	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2191
2192	if (sc == NULL)
2193	return 0;
2194
2195	return sc->async_cb(s, sc->async_cb_arg);
2196	}
2197
2198	static int ssl_start_async_job(SSL s, struct ssl_async_args args,
2199	int (func) (void ))
2200	{
2201	int ret;
2202	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2203
2204	if (sc == NULL)
2205	return 0;
2206
2207	if (sc->waitctx == NULL) {
2208	sc->waitctx = ASYNC_WAIT_CTX_new();
2209	if (sc->waitctx == NULL)
2210	return -1;
2211	if (sc->async_cb != NULL
2212	&& !ASYNC_WAIT_CTX_set_callback
2213	(sc->waitctx, ssl_async_wait_ctx_cb, s))
2214	return -1;
2215	}
2216
2217	sc->rwstate = SSL_NOTHING;
2218	switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2219	sizeof(struct ssl_async_args))) {
2220	case ASYNC_ERR:
2221	sc->rwstate = SSL_NOTHING;
2222	ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2223	return -1;
2224	case ASYNC_PAUSE:
2225	sc->rwstate = SSL_ASYNC_PAUSED;
2226	return -1;
2227	case ASYNC_NO_JOBS:
2228	sc->rwstate = SSL_ASYNC_NO_JOBS;
2229	return -1;
2230	case ASYNC_FINISH:
2231	sc->job = NULL;
2232	return ret;
2233	default:
2234	sc->rwstate = SSL_NOTHING;
2235	ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2236	/* Shouldn't happen */
2237	return -1;
2238	}
2239	}
2240
2241	static int ssl_io_intern(void *vargs)
2242	{
2243	struct ssl_async_args *args;
2244	SSL *s;
2245	void *buf;
2246	size_t num;
2247	SSL_CONNECTION *sc;
2248
2249	args = (struct ssl_async_args *)vargs;
2250	s = args->s;
2251	buf = args->buf;
2252	num = args->num;
2253	if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2254	return -1;
2255
2256	switch (args->type) {
2257	case READFUNC:
2258	return args->f.func_read(s, buf, num, &sc->asyncrw);
2259	case WRITEFUNC:
2260	return args->f.func_write(s, buf, num, &sc->asyncrw);
2261	case OTHERFUNC:
2262	return args->f.func_other(s);
2263	}
2264	return -1;
2265	}
2266
2267	int ssl_read_internal(SSL s, void buf, size_t num, size_t *readbytes)
2268	{
2269	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2270
2271	#ifndef OPENSSL_NO_QUIC
2272	if (IS_QUIC(s))
2273	return s->method->ssl_read(s, buf, num, readbytes);
2274	#endif
2275
2276	if (sc == NULL)
2277	return -1;
2278
2279	if (sc->handshake_func == NULL) {
2280	ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2281	return -1;
2282	}
2283
2284	if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2285	sc->rwstate = SSL_NOTHING;
2286	return 0;
2287	}
2288
2289	if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2290	\|\| sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2291	ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2292	return 0;
2293	}
2294	/*
2295	* If we are a client and haven't received the ServerHello etc then we
2296	* better do that
2297	*/
2298	ossl_statem_check_finish_init(sc, 0);
2299
2300	if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2301	struct ssl_async_args args;
2302	int ret;
2303
2304	args.s = s;
2305	args.buf = buf;
2306	args.num = num;
2307	args.type = READFUNC;
2308	args.f.func_read = s->method->ssl_read;
2309
2310	ret = ssl_start_async_job(s, &args, ssl_io_intern);
2311	*readbytes = sc->asyncrw;
2312	return ret;
2313	} else {
2314	return s->method->ssl_read(s, buf, num, readbytes);
2315	}
2316	}
2317
2318	int SSL_read(SSL s, void buf, int num)
2319	{
2320	int ret;
2321	size_t readbytes;
2322
2323	if (num < 0) {
2324	ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2325	return -1;
2326	}
2327
2328	ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2329
2330	/*
2331	* The cast is safe here because ret should be <= INT_MAX because num is
2332	* <= INT_MAX
2333	*/
2334	if (ret > 0)
2335	ret = (int)readbytes;
2336
2337	return ret;
2338	}
2339
2340	int SSL_read_ex(SSL s, void buf, size_t num, size_t *readbytes)
2341	{
2342	int ret = ssl_read_internal(s, buf, num, readbytes);
2343
2344	if (ret < 0)
2345	ret = 0;
2346	return ret;
2347	}
2348
2349	int SSL_read_early_data(SSL s, void buf, size_t num, size_t *readbytes)
2350	{
2351	int ret;
2352	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2353
2354	/* TODO(QUIC 0RTT): 0-RTT support */
2355	if (sc == NULL \|\| !sc->server) {
2356	ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2357	return SSL_READ_EARLY_DATA_ERROR;
2358	}
2359
2360	switch (sc->early_data_state) {
2361	case SSL_EARLY_DATA_NONE:
2362	if (!SSL_in_before(s)) {
2363	ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2364	return SSL_READ_EARLY_DATA_ERROR;
2365	}
2366	/* fall through */
2367
2368	case SSL_EARLY_DATA_ACCEPT_RETRY:
2369	sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2370	ret = SSL_accept(s);
2371	if (ret <= 0) {
2372	/* NBIO or error */
2373	sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2374	return SSL_READ_EARLY_DATA_ERROR;
2375	}
2376	/* fall through */
2377
2378	case SSL_EARLY_DATA_READ_RETRY:
2379	if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2380	sc->early_data_state = SSL_EARLY_DATA_READING;
2381	ret = SSL_read_ex(s, buf, num, readbytes);
2382	/*
2383	* State machine will update early_data_state to
2384	* SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2385	* message
2386	*/
2387	if (ret > 0 \|\| (ret <= 0 && sc->early_data_state
2388	!= SSL_EARLY_DATA_FINISHED_READING)) {
2389	sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2390	return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2391	: SSL_READ_EARLY_DATA_ERROR;
2392	}
2393	} else {
2394	sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2395	}
2396	*readbytes = 0;
2397	return SSL_READ_EARLY_DATA_FINISH;
2398
2399	default:
2400	ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2401	return SSL_READ_EARLY_DATA_ERROR;
2402	}
2403	}
2404
2405	int SSL_get_early_data_status(const SSL *s)
2406	{
2407	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2408
2409	/* TODO(QUIC 0RTT): 0-RTT support */
2410	if (sc == NULL)
2411	return 0;
2412
2413	return sc->ext.early_data;
2414	}
2415
2416	static int ssl_peek_internal(SSL s, void buf, size_t num, size_t *readbytes)
2417	{
2418	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2419
2420	#ifndef OPENSSL_NO_QUIC
2421	if (IS_QUIC(s))
2422	return s->method->ssl_peek(s, buf, num, readbytes);
2423	#endif
2424
2425	if (sc == NULL)
2426	return 0;
2427
2428	if (sc->handshake_func == NULL) {
2429	ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2430	return -1;
2431	}
2432
2433	if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2434	return 0;
2435	}
2436	if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2437	struct ssl_async_args args;
2438	int ret;
2439
2440	args.s = s;
2441	args.buf = buf;
2442	args.num = num;
2443	args.type = READFUNC;
2444	args.f.func_read = s->method->ssl_peek;
2445
2446	ret = ssl_start_async_job(s, &args, ssl_io_intern);
2447	*readbytes = sc->asyncrw;
2448	return ret;
2449	} else {
2450	return s->method->ssl_peek(s, buf, num, readbytes);
2451	}
2452	}
2453
2454	int SSL_peek(SSL s, void buf, int num)
2455	{
2456	int ret;
2457	size_t readbytes;
2458
2459	if (num < 0) {
2460	ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2461	return -1;
2462	}
2463
2464	ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2465
2466	/*
2467	* The cast is safe here because ret should be <= INT_MAX because num is
2468	* <= INT_MAX
2469	*/
2470	if (ret > 0)
2471	ret = (int)readbytes;
2472
2473	return ret;
2474	}
2475
2476
2477	int SSL_peek_ex(SSL s, void buf, size_t num, size_t *readbytes)
2478	{
2479	int ret = ssl_peek_internal(s, buf, num, readbytes);
2480
2481	if (ret < 0)
2482	ret = 0;
2483	return ret;
2484	}
2485
2486	int ssl_write_internal(SSL s, const void buf, size_t num,
2487	uint64_t flags, size_t *written)
2488	{
2489	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2490
2491	#ifndef OPENSSL_NO_QUIC
2492	if (IS_QUIC(s))
2493	return ossl_quic_write_flags(s, buf, num, flags, written);
2494	#endif
2495
2496	if (sc == NULL)
2497	return 0;
2498
2499	if (sc->handshake_func == NULL) {
2500	ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2501	return -1;
2502	}
2503
2504	if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2505	sc->rwstate = SSL_NOTHING;
2506	ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2507	return -1;
2508	}
2509
2510	if (flags != 0) {
2511	ERR_raise(ERR_LIB_SSL, SSL_R_UNSUPPORTED_WRITE_FLAG);
2512	return -1;
2513	}
2514
2515	if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2516	\|\| sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2517	\|\| sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2518	ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2519	return 0;
2520	}
2521	/* If we are a client and haven't sent the Finished we better do that */
2522	ossl_statem_check_finish_init(sc, 1);
2523
2524	if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2525	int ret;
2526	struct ssl_async_args args;
2527
2528	args.s = s;
2529	args.buf = (void *)buf;
2530	args.num = num;
2531	args.type = WRITEFUNC;
2532	args.f.func_write = s->method->ssl_write;
2533
2534	ret = ssl_start_async_job(s, &args, ssl_io_intern);
2535	*written = sc->asyncrw;
2536	return ret;
2537	} else {
2538	return s->method->ssl_write(s, buf, num, written);
2539	}
2540	}
2541
2542	ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2543	{
2544	ossl_ssize_t ret;
2545	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2546
2547	if (sc == NULL)
2548	return 0;
2549
2550	if (sc->handshake_func == NULL) {
2551	ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2552	return -1;
2553	}
2554
2555	if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2556	sc->rwstate = SSL_NOTHING;
2557	ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2558	return -1;
2559	}
2560
2561	if (!BIO_get_ktls_send(sc->wbio)) {
2562	ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2563	return -1;
2564	}
2565
2566	/* If we have an alert to send, lets send it */
2567	if (sc->s3.alert_dispatch > 0) {
2568	ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2569	if (ret <= 0) {
2570	/* SSLfatal() already called if appropriate */
2571	return ret;
2572	}
2573	/* if it went, fall through and send more stuff */
2574	}
2575
2576	sc->rwstate = SSL_WRITING;
2577	if (BIO_flush(sc->wbio) <= 0) {
2578	if (!BIO_should_retry(sc->wbio)) {
2579	sc->rwstate = SSL_NOTHING;
2580	} else {
2581	#ifdef EAGAIN
2582	set_sys_error(EAGAIN);
2583	#endif
2584	}
2585	return -1;
2586	}
2587
2588	#ifdef OPENSSL_NO_KTLS
2589	ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2590	"can't call ktls_sendfile(), ktls disabled");
2591	return -1;
2592	#else
2593	ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2594	if (ret < 0) {
2595	#if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2596	if ((get_last_sys_error() == EAGAIN) \|\|
2597	(get_last_sys_error() == EINTR) \|\|
2598	(get_last_sys_error() == EBUSY))
2599	BIO_set_retry_write(sc->wbio);
2600	else
2601	#endif
2602	ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2603	return ret;
2604	}
2605	sc->rwstate = SSL_NOTHING;
2606	return ret;
2607	#endif
2608	}
2609
2610	int SSL_write(SSL s, const void buf, int num)
2611	{
2612	int ret;
2613	size_t written;
2614
2615	if (num < 0) {
2616	ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2617	return -1;
2618	}
2619
2620	ret = ssl_write_internal(s, buf, (size_t)num, 0, &written);
2621
2622	/*
2623	* The cast is safe here because ret should be <= INT_MAX because num is
2624	* <= INT_MAX
2625	*/
2626	if (ret > 0)
2627	ret = (int)written;
2628
2629	return ret;
2630	}
2631
2632	int SSL_write_ex(SSL s, const void buf, size_t num, size_t *written)
2633	{
2634	return SSL_write_ex2(s, buf, num, 0, written);
2635	}
2636
2637	int SSL_write_ex2(SSL s, const void buf, size_t num, uint64_t flags,
2638	size_t *written)
2639	{
2640	int ret = ssl_write_internal(s, buf, num, flags, written);
2641
2642	if (ret < 0)
2643	ret = 0;
2644	return ret;
2645	}
2646
2647	int SSL_write_early_data(SSL s, const void buf, size_t num, size_t *written)
2648	{
2649	int ret, early_data_state;
2650	size_t writtmp;
2651	uint32_t partialwrite;
2652	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2653
2654	/* TODO(QUIC 0RTT): This will need special handling for QUIC */
2655	if (sc == NULL)
2656	return 0;
2657
2658	switch (sc->early_data_state) {
2659	case SSL_EARLY_DATA_NONE:
2660	if (sc->server
2661	\|\| !SSL_in_before(s)
2662	\|\| ((sc->session == NULL \|\| sc->session->ext.max_early_data == 0)
2663	&& (sc->psk_use_session_cb == NULL))) {
2664	ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2665	return 0;
2666	}
2667	/* fall through */
2668
2669	case SSL_EARLY_DATA_CONNECT_RETRY:
2670	sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2671	ret = SSL_connect(s);
2672	if (ret <= 0) {
2673	/* NBIO or error */
2674	sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2675	return 0;
2676	}
2677	/* fall through */
2678
2679	case SSL_EARLY_DATA_WRITE_RETRY:
2680	sc->early_data_state = SSL_EARLY_DATA_WRITING;
2681	/*
2682	* We disable partial write for early data because we don't keep track
2683	* of how many bytes we've written between the SSL_write_ex() call and
2684	* the flush if the flush needs to be retried)
2685	*/
2686	partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2687	sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2688	ret = SSL_write_ex(s, buf, num, &writtmp);
2689	sc->mode \|= partialwrite;
2690	if (!ret) {
2691	sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2692	return ret;
2693	}
2694	sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2695	/* fall through */
2696
2697	case SSL_EARLY_DATA_WRITE_FLUSH:
2698	/* The buffering BIO is still in place so we need to flush it */
2699	if (statem_flush(sc) != 1)
2700	return 0;
2701	*written = num;
2702	sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2703	return 1;
2704
2705	case SSL_EARLY_DATA_FINISHED_READING:
2706	case SSL_EARLY_DATA_READ_RETRY:
2707	early_data_state = sc->early_data_state;
2708	/* We are a server writing to an unauthenticated client */
2709	sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2710	ret = SSL_write_ex(s, buf, num, written);
2711	/* The buffering BIO is still in place */
2712	if (ret)
2713	(void)BIO_flush(sc->wbio);
2714	sc->early_data_state = early_data_state;
2715	return ret;
2716
2717	default:
2718	ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2719	return 0;
2720	}
2721	}
2722
2723	int SSL_shutdown(SSL *s)
2724	{
2725	/*
2726	* Note that this function behaves differently from what one might
2727	* expect. Return values are 0 for no success (yet), 1 for success; but
2728	* calling it once is usually not enough, even if blocking I/O is used
2729	* (see ssl3_shutdown).
2730	*/
2731	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2732
2733	#ifndef OPENSSL_NO_QUIC
2734	if (IS_QUIC(s))
2735	return ossl_quic_conn_shutdown(s, 0, NULL, 0);
2736	#endif
2737
2738	if (sc == NULL)
2739	return -1;
2740
2741	if (sc->handshake_func == NULL) {
2742	ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2743	return -1;
2744	}
2745
2746	if (!SSL_in_init(s)) {
2747	if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2748	struct ssl_async_args args;
2749
2750	memset(&args, 0, sizeof(args));
2751	args.s = s;
2752	args.type = OTHERFUNC;
2753	args.f.func_other = s->method->ssl_shutdown;
2754
2755	return ssl_start_async_job(s, &args, ssl_io_intern);
2756	} else {
2757	return s->method->ssl_shutdown(s);
2758	}
2759	} else {
2760	ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2761	return -1;
2762	}
2763	}
2764
2765	int SSL_key_update(SSL *s, int updatetype)
2766	{
2767	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2768
2769	#ifndef OPENSSL_NO_QUIC
2770	if (IS_QUIC(s))
2771	return ossl_quic_key_update(s, updatetype);
2772	#endif
2773
2774	if (sc == NULL)
2775	return 0;
2776
2777	if (!SSL_CONNECTION_IS_TLS13(sc)) {
2778	ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2779	return 0;
2780	}
2781
2782	if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2783	&& updatetype != SSL_KEY_UPDATE_REQUESTED) {
2784	ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2785	return 0;
2786	}
2787
2788	if (!SSL_is_init_finished(s)) {
2789	ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2790	return 0;
2791	}
2792
2793	if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2794	ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2795	return 0;
2796	}
2797
2798	ossl_statem_set_in_init(sc, 1);
2799	sc->key_update = updatetype;
2800	return 1;
2801	}
2802
2803	int SSL_get_key_update_type(const SSL *s)
2804	{
2805	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2806
2807	#ifndef OPENSSL_NO_QUIC
2808	if (IS_QUIC(s))
2809	return ossl_quic_get_key_update_type(s);
2810	#endif
2811
2812	if (sc == NULL)
2813	return 0;
2814
2815	return sc->key_update;
2816	}
2817
2818	/*
2819	* Can we accept a renegotiation request? If yes, set the flag and
2820	* return 1 if yes. If not, raise error and return 0.
2821	*/
2822	static int can_renegotiate(const SSL_CONNECTION *sc)
2823	{
2824	if (SSL_CONNECTION_IS_TLS13(sc)) {
2825	ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2826	return 0;
2827	}
2828
2829	if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2830	ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2831	return 0;
2832	}
2833
2834	return 1;
2835	}
2836
2837	int SSL_renegotiate(SSL *s)
2838	{
2839	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2840
2841	if (sc == NULL)
2842	return 0;
2843
2844	if (!can_renegotiate(sc))
2845	return 0;
2846
2847	sc->renegotiate = 1;
2848	sc->new_session = 1;
2849	return s->method->ssl_renegotiate(s);
2850	}
2851
2852	int SSL_renegotiate_abbreviated(SSL *s)
2853	{
2854	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2855
2856	if (sc == NULL)
2857	return 0;
2858
2859	if (!can_renegotiate(sc))
2860	return 0;
2861
2862	sc->renegotiate = 1;
2863	sc->new_session = 0;
2864	return s->method->ssl_renegotiate(s);
2865	}
2866
2867	int SSL_renegotiate_pending(const SSL *s)
2868	{
2869	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2870
2871	if (sc == NULL)
2872	return 0;
2873
2874	/*
2875	* becomes true when negotiation is requested; false again once a
2876	* handshake has finished
2877	*/
2878	return (sc->renegotiate != 0);
2879	}
2880
2881	int SSL_new_session_ticket(SSL *s)
2882	{
2883	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2884
2885	if (sc == NULL)
2886	return 0;
2887
2888	/* If we are in init because we're sending tickets, okay to send more. */
2889	if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2890	\|\| SSL_IS_FIRST_HANDSHAKE(sc) \|\| !sc->server
2891	\|\| !SSL_CONNECTION_IS_TLS13(sc))
2892	return 0;
2893	sc->ext.extra_tickets_expected++;
2894	if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2895	ossl_statem_set_in_init(sc, 1);
2896	return 1;
2897	}
2898
2899	long SSL_ctrl(SSL s, int cmd, long larg, void parg)
2900	{
2901	return ossl_ctrl_internal(s, cmd, larg, parg, /no_quic=/0);
2902	}
2903
2904	long ossl_ctrl_internal(SSL s, int cmd, long larg, void parg, int no_quic)
2905	{
2906	long l;
2907	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2908
2909	/*
2910	* Routing of ctrl calls for QUIC is a little counterintuitive:
2911	*
2912	* - Firstly (no_quic=0), we pass the ctrl directly to our QUIC
2913	* implementation in case it wants to handle the ctrl specially.
2914	*
2915	* - If our QUIC implementation does not care about the ctrl, it
2916	* will reenter this function with no_quic=1 and we will try to handle
2917	* it directly using the QCSO SSL object stub (not the handshake layer
2918	* SSL object). This is important for e.g. the version configuration
2919	* ctrls below, which must use s->defltmeth (and not sc->defltmeth).
2920	*
2921	* - If we don't handle a ctrl here specially, then processing is
2922	* redirected to the handshake layer SSL object.
2923	*/
2924	if (!no_quic && IS_QUIC(s))
2925	return s->method->ssl_ctrl(s, cmd, larg, parg);
2926
2927	if (sc == NULL)
2928	return 0;
2929
2930	switch (cmd) {
2931	case SSL_CTRL_GET_READ_AHEAD:
2932	return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2933	case SSL_CTRL_SET_READ_AHEAD:
2934	l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2935	RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2936	return l;
2937
2938	case SSL_CTRL_MODE:
2939	{
2940	OSSL_PARAM options[2], *opts = options;
2941
2942	sc->mode \|= larg;
2943
2944	*opts++ = OSSL_PARAM_construct_uint32(OSSL_LIBSSL_RECORD_LAYER_PARAM_MODE,
2945	&sc->mode);
2946	*opts = OSSL_PARAM_construct_end();
2947
2948	/* Ignore return value */
2949	sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
2950
2951	return sc->mode;
2952	}
2953	case SSL_CTRL_CLEAR_MODE:
2954	return (sc->mode &= ~larg);
2955	case SSL_CTRL_GET_MAX_CERT_LIST:
2956	return (long)sc->max_cert_list;
2957	case SSL_CTRL_SET_MAX_CERT_LIST:
2958	if (larg < 0)
2959	return 0;
2960	l = (long)sc->max_cert_list;
2961	sc->max_cert_list = (size_t)larg;
2962	return l;
2963	case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2964	if (larg < 512 \|\| larg > SSL3_RT_MAX_PLAIN_LENGTH)
2965	return 0;
2966	#ifndef OPENSSL_NO_KTLS
2967	if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2968	return 0;
2969	#endif /* OPENSSL_NO_KTLS */
2970	sc->max_send_fragment = larg;
2971	if (sc->max_send_fragment < sc->split_send_fragment)
2972	sc->split_send_fragment = sc->max_send_fragment;
2973	sc->rlayer.wrlmethod->set_max_frag_len(sc->rlayer.wrl, larg);
2974	return 1;
2975	case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2976	if ((size_t)larg > sc->max_send_fragment \|\| larg == 0)
2977	return 0;
2978	sc->split_send_fragment = larg;
2979	return 1;
2980	case SSL_CTRL_SET_MAX_PIPELINES:
2981	if (larg < 1 \|\| larg > SSL_MAX_PIPELINES)
2982	return 0;
2983	sc->max_pipelines = larg;
2984	if (sc->rlayer.rrlmethod->set_max_pipelines != NULL)
2985	sc->rlayer.rrlmethod->set_max_pipelines(sc->rlayer.rrl, (size_t)larg);
2986	return 1;
2987	case SSL_CTRL_GET_RI_SUPPORT:
2988	return sc->s3.send_connection_binding;
2989	case SSL_CTRL_SET_RETRY_VERIFY:
2990	sc->rwstate = SSL_RETRY_VERIFY;
2991	return 1;
2992	case SSL_CTRL_CERT_FLAGS:
2993	return (sc->cert->cert_flags \|= larg);
2994	case SSL_CTRL_CLEAR_CERT_FLAGS:
2995	return (sc->cert->cert_flags &= ~larg);
2996
2997	case SSL_CTRL_GET_RAW_CIPHERLIST:
2998	if (parg) {
2999	if (sc->s3.tmp.ciphers_raw == NULL)
3000	return 0;
3001	(unsigned char *)parg = sc->s3.tmp.ciphers_raw;
3002	return (int)sc->s3.tmp.ciphers_rawlen;
3003	} else {
3004	return TLS_CIPHER_LEN;
3005	}
3006	case SSL_CTRL_GET_EXTMS_SUPPORT:
3007	if (!sc->session \|\| SSL_in_init(s) \|\| ossl_statem_get_in_handshake(sc))
3008	return -1;
3009	if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
3010	return 1;
3011	else
3012	return 0;
3013	case SSL_CTRL_SET_MIN_PROTO_VERSION:
3014	return ssl_check_allowed_versions(larg, sc->max_proto_version)
3015	&& ssl_set_version_bound(s->defltmeth->version, (int)larg,
3016	&sc->min_proto_version);
3017	case SSL_CTRL_GET_MIN_PROTO_VERSION:
3018	return sc->min_proto_version;
3019	case SSL_CTRL_SET_MAX_PROTO_VERSION:
3020	return ssl_check_allowed_versions(sc->min_proto_version, larg)
3021	&& ssl_set_version_bound(s->defltmeth->version, (int)larg,
3022	&sc->max_proto_version);
3023	case SSL_CTRL_GET_MAX_PROTO_VERSION:
3024	return sc->max_proto_version;
3025	default:
3026	if (IS_QUIC(s))
3027	return SSL_ctrl((SSL *)sc, cmd, larg, parg);
3028	else
3029	return s->method->ssl_ctrl(s, cmd, larg, parg);
3030	}
3031	}
3032
3033	long SSL_callback_ctrl(SSL s, int cmd, void (fp) (void))
3034	{
3035	return s->method->ssl_callback_ctrl(s, cmd, fp);
3036	}
3037
3038	LHASH_OF(SSL_SESSION) SSL_CTX_sessions(SSL_CTX ctx)
3039	{
3040	return ctx->sessions;
3041	}
3042
3043	static int ssl_tsan_load(SSL_CTX ctx, TSAN_QUALIFIER int stat)
3044	{
3045	int res = 0;
3046
3047	if (ssl_tsan_lock(ctx)) {
3048	res = tsan_load(stat);
3049	ssl_tsan_unlock(ctx);
3050	}
3051	return res;
3052	}
3053
3054	long SSL_CTX_ctrl(SSL_CTX ctx, int cmd, long larg, void parg)
3055	{
3056	long l;
3057	/* For some cases with ctx == NULL perform syntax checks */
3058	if (ctx == NULL) {
3059	switch (cmd) {
3060	case SSL_CTRL_SET_GROUPS_LIST:
3061	return tls1_set_groups_list(ctx, NULL, NULL, parg);
3062	case SSL_CTRL_SET_SIGALGS_LIST:
3063	case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
3064	return tls1_set_sigalgs_list(ctx, NULL, parg, 0);
3065	default:
3066	return 0;
3067	}
3068	}
3069
3070	switch (cmd) {
3071	case SSL_CTRL_GET_READ_AHEAD:
3072	return ctx->read_ahead;
3073	case SSL_CTRL_SET_READ_AHEAD:
3074	l = ctx->read_ahead;
3075	ctx->read_ahead = larg;
3076	return l;
3077
3078	case SSL_CTRL_SET_MSG_CALLBACK_ARG:
3079	ctx->msg_callback_arg = parg;
3080	return 1;
3081
3082	case SSL_CTRL_GET_MAX_CERT_LIST:
3083	return (long)ctx->max_cert_list;
3084	case SSL_CTRL_SET_MAX_CERT_LIST:
3085	if (larg < 0)
3086	return 0;
3087	l = (long)ctx->max_cert_list;
3088	ctx->max_cert_list = (size_t)larg;
3089	return l;
3090
3091	case SSL_CTRL_SET_SESS_CACHE_SIZE:
3092	if (larg < 0)
3093	return 0;
3094	l = (long)ctx->session_cache_size;
3095	ctx->session_cache_size = (size_t)larg;
3096	return l;
3097	case SSL_CTRL_GET_SESS_CACHE_SIZE:
3098	return (long)ctx->session_cache_size;
3099	case SSL_CTRL_SET_SESS_CACHE_MODE:
3100	l = ctx->session_cache_mode;
3101	ctx->session_cache_mode = larg;
3102	return l;
3103	case SSL_CTRL_GET_SESS_CACHE_MODE:
3104	return ctx->session_cache_mode;
3105
3106	case SSL_CTRL_SESS_NUMBER:
3107	return lh_SSL_SESSION_num_items(ctx->sessions);
3108	case SSL_CTRL_SESS_CONNECT:
3109	return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
3110	case SSL_CTRL_SESS_CONNECT_GOOD:
3111	return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
3112	case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
3113	return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
3114	case SSL_CTRL_SESS_ACCEPT:
3115	return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
3116	case SSL_CTRL_SESS_ACCEPT_GOOD:
3117	return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
3118	case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
3119	return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
3120	case SSL_CTRL_SESS_HIT:
3121	return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
3122	case SSL_CTRL_SESS_CB_HIT:
3123	return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
3124	case SSL_CTRL_SESS_MISSES:
3125	return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
3126	case SSL_CTRL_SESS_TIMEOUTS:
3127	return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
3128	case SSL_CTRL_SESS_CACHE_FULL:
3129	return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
3130	case SSL_CTRL_MODE:
3131	return (ctx->mode \|= larg);
3132	case SSL_CTRL_CLEAR_MODE:
3133	return (ctx->mode &= ~larg);
3134	case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
3135	if (larg < 512 \|\| larg > SSL3_RT_MAX_PLAIN_LENGTH)
3136	return 0;
3137	ctx->max_send_fragment = larg;
3138	if (ctx->max_send_fragment < ctx->split_send_fragment)
3139	ctx->split_send_fragment = ctx->max_send_fragment;
3140	return 1;
3141	case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
3142	if ((size_t)larg > ctx->max_send_fragment \|\| larg == 0)
3143	return 0;
3144	ctx->split_send_fragment = larg;
3145	return 1;
3146	case SSL_CTRL_SET_MAX_PIPELINES:
3147	if (larg < 1 \|\| larg > SSL_MAX_PIPELINES)
3148	return 0;
3149	ctx->max_pipelines = larg;
3150	return 1;
3151	case SSL_CTRL_CERT_FLAGS:
3152	return (ctx->cert->cert_flags \|= larg);
3153	case SSL_CTRL_CLEAR_CERT_FLAGS:
3154	return (ctx->cert->cert_flags &= ~larg);
3155	case SSL_CTRL_SET_MIN_PROTO_VERSION:
3156	return ssl_check_allowed_versions(larg, ctx->max_proto_version)
3157	&& ssl_set_version_bound(ctx->method->version, (int)larg,
3158	&ctx->min_proto_version);
3159	case SSL_CTRL_GET_MIN_PROTO_VERSION:
3160	return ctx->min_proto_version;
3161	case SSL_CTRL_SET_MAX_PROTO_VERSION:
3162	return ssl_check_allowed_versions(ctx->min_proto_version, larg)
3163	&& ssl_set_version_bound(ctx->method->version, (int)larg,
3164	&ctx->max_proto_version);
3165	case SSL_CTRL_GET_MAX_PROTO_VERSION:
3166	return ctx->max_proto_version;
3167	default:
3168	return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
3169	}
3170	}
3171
3172	long SSL_CTX_callback_ctrl(SSL_CTX ctx, int cmd, void (fp) (void))
3173	{
3174	switch (cmd) {
3175	case SSL_CTRL_SET_MSG_CALLBACK:
3176	ctx->msg_callback = (void (*)
3177	(int write_p, int version, int content_type,
3178	const void buf, size_t len, SSL ssl,
3179	void *arg))(fp);
3180	return 1;
3181
3182	default:
3183	return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
3184	}
3185	}
3186
3187	int ssl_cipher_id_cmp(const SSL_CIPHER a, const SSL_CIPHER b)
3188	{
3189	if (a->id > b->id)
3190	return 1;
3191	if (a->id < b->id)
3192	return -1;
3193	return 0;
3194	}
3195
3196	int ssl_cipher_ptr_id_cmp(const SSL_CIPHER const ap,
3197	const SSL_CIPHER const bp)
3198	{
3199	if ((ap)->id > (bp)->id)
3200	return 1;
3201	if ((ap)->id < (bp)->id)
3202	return -1;
3203	return 0;
3204	}
3205
3206	/*
3207	* return a STACK of the ciphers available for the SSL and in order of
3208	* preference
3209	*/
3210	STACK_OF(SSL_CIPHER) SSL_get_ciphers(const SSL s)
3211	{
3212	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3213
3214	if (sc != NULL) {
3215	if (sc->cipher_list != NULL) {
3216	return sc->cipher_list;
3217	} else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3218	return s->ctx->cipher_list;
3219	}
3220	}
3221	return NULL;
3222	}
3223
3224	STACK_OF(SSL_CIPHER) SSL_get_client_ciphers(const SSL s)
3225	{
3226	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3227
3228	if (sc == NULL \|\| !sc->server)
3229	return NULL;
3230	return sc->peer_ciphers;
3231	}
3232
3233	STACK_OF(SSL_CIPHER) SSL_get1_supported_ciphers(SSL s)
3234	{
3235	STACK_OF(SSL_CIPHER) sk = NULL, ciphers;
3236	int i;
3237	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3238
3239	if (sc == NULL)
3240	return NULL;
3241
3242	ciphers = SSL_get_ciphers(s);
3243	if (!ciphers)
3244	return NULL;
3245	if (!ssl_set_client_disabled(sc))
3246	return NULL;
3247	for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3248	const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3249	if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3250	if (!sk)
3251	sk = sk_SSL_CIPHER_new_null();
3252	if (!sk)
3253	return NULL;
3254	if (!sk_SSL_CIPHER_push(sk, c)) {
3255	sk_SSL_CIPHER_free(sk);
3256	return NULL;
3257	}
3258	}
3259	}
3260	return sk;
3261	}
3262
3263	/** return a STACK of the ciphers available for the SSL and in order of
3264	* algorithm id */
3265	STACK_OF(SSL_CIPHER) ssl_get_ciphers_by_id(SSL_CONNECTION s)
3266	{
3267	if (s != NULL) {
3268	if (s->cipher_list_by_id != NULL)
3269	return s->cipher_list_by_id;
3270	else if (s->ssl.ctx != NULL
3271	&& s->ssl.ctx->cipher_list_by_id != NULL)
3272	return s->ssl.ctx->cipher_list_by_id;
3273	}
3274	return NULL;
3275	}
3276
3277	/** The old interface to get the same thing as SSL_get_ciphers() */
3278	const char SSL_get_cipher_list(const SSL s, int n)
3279	{
3280	const SSL_CIPHER *c;
3281	STACK_OF(SSL_CIPHER) *sk;
3282
3283	if (s == NULL)
3284	return NULL;
3285	sk = SSL_get_ciphers(s);
3286	if ((sk == NULL) \|\| (sk_SSL_CIPHER_num(sk) <= n))
3287	return NULL;
3288	c = sk_SSL_CIPHER_value(sk, n);
3289	if (c == NULL)
3290	return NULL;
3291	return c->name;
3292	}
3293
3294	/** return a STACK of the ciphers available for the SSL_CTX and in order of
3295	* preference */
3296	STACK_OF(SSL_CIPHER) SSL_CTX_get_ciphers(const SSL_CTX ctx)
3297	{
3298	if (ctx != NULL)
3299	return ctx->cipher_list;
3300	return NULL;
3301	}
3302
3303	/*
3304	* Distinguish between ciphers controlled by set_ciphersuite() and
3305	* set_cipher_list() when counting.
3306	*/
3307	static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3308	{
3309	int i, num = 0;
3310	const SSL_CIPHER *c;
3311
3312	if (sk == NULL)
3313	return 0;
3314	for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3315	c = sk_SSL_CIPHER_value(sk, i);
3316	if (c->min_tls >= TLS1_3_VERSION)
3317	continue;
3318	num++;
3319	}
3320	return num;
3321	}
3322
3323	/** specify the ciphers to be used by default by the SSL_CTX */
3324	int SSL_CTX_set_cipher_list(SSL_CTX ctx, const char str)
3325	{
3326	STACK_OF(SSL_CIPHER) *sk;
3327
3328	sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3329	&ctx->cipher_list, &ctx->cipher_list_by_id, str,
3330	ctx->cert);
3331	/*
3332	* ssl_create_cipher_list may return an empty stack if it was unable to
3333	* find a cipher matching the given rule string (for example if the rule
3334	* string specifies a cipher which has been disabled). This is not an
3335	* error as far as ssl_create_cipher_list is concerned, and hence
3336	* ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3337	*/
3338	if (sk == NULL)
3339	return 0;
3340	else if (cipher_list_tls12_num(sk) == 0) {
3341	ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3342	return 0;
3343	}
3344	return 1;
3345	}
3346
3347	/** specify the ciphers to be used by the SSL */
3348	int SSL_set_cipher_list(SSL s, const char str)
3349	{
3350	STACK_OF(SSL_CIPHER) *sk;
3351	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3352
3353	if (sc == NULL)
3354	return 0;
3355
3356	sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3357	&sc->cipher_list, &sc->cipher_list_by_id, str,
3358	sc->cert);
3359	/* see comment in SSL_CTX_set_cipher_list */
3360	if (sk == NULL)
3361	return 0;
3362	else if (cipher_list_tls12_num(sk) == 0) {
3363	ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3364	return 0;
3365	}
3366	return 1;
3367	}
3368
3369	char SSL_get_shared_ciphers(const SSL s, char *buf, int size)
3370	{
3371	char *p;
3372	STACK_OF(SSL_CIPHER) clntsk, srvrsk;
3373	const SSL_CIPHER *c;
3374	int i;
3375	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3376
3377	if (sc == NULL)
3378	return NULL;
3379
3380	if (!sc->server
3381	\|\| sc->peer_ciphers == NULL
3382	\|\| size < 2)
3383	return NULL;
3384
3385	p = buf;
3386	clntsk = sc->peer_ciphers;
3387	srvrsk = SSL_get_ciphers(s);
3388	if (clntsk == NULL \|\| srvrsk == NULL)
3389	return NULL;
3390
3391	if (sk_SSL_CIPHER_num(clntsk) == 0 \|\| sk_SSL_CIPHER_num(srvrsk) == 0)
3392	return NULL;
3393
3394	for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3395	int n;
3396
3397	c = sk_SSL_CIPHER_value(clntsk, i);
3398	if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3399	continue;
3400
3401	n = OPENSSL_strnlen(c->name, size);
3402	if (n >= size) {
3403	if (p != buf)
3404	--p;
3405	*p = '\0';
3406	return buf;
3407	}
3408	memcpy(p, c->name, n);
3409	p += n;
3410	*(p++) = ':';
3411	size -= n + 1;
3412	}
3413	p[-1] = '\0';
3414	return buf;
3415	}
3416
3417	/**
3418	* Return the requested servername (SNI) value. Note that the behaviour varies
3419	* depending on:
3420	* - whether this is called by the client or the server,
3421	* - if we are before or during/after the handshake,
3422	* - if a resumption or normal handshake is being attempted/has occurred
3423	* - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3424	*
3425	* Note that only the host_name type is defined (RFC 3546).
3426	*/
3427	const char SSL_get_servername(const SSL s, const int type)
3428	{
3429	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3430	int server;
3431
3432	if (sc == NULL)
3433	return NULL;
3434
3435	/*
3436	* If we don't know if we are the client or the server yet then we assume
3437	* client.
3438	*/
3439	server = sc->handshake_func == NULL ? 0 : sc->server;
3440
3441	if (type != TLSEXT_NAMETYPE_host_name)
3442	return NULL;
3443
3444	if (server) {
3445	/**
3446	* Server side
3447	* In TLSv1.3 on the server SNI is not associated with the session
3448	* but in TLSv1.2 or below it is.
3449	*
3450	* Before the handshake:
3451	* - return NULL
3452	*
3453	* During/after the handshake (TLSv1.2 or below resumption occurred):
3454	* - If a servername was accepted by the server in the original
3455	* handshake then it will return that servername, or NULL otherwise.
3456	*
3457	* During/after the handshake (TLSv1.2 or below resumption did not occur):
3458	* - The function will return the servername requested by the client in
3459	* this handshake or NULL if none was requested.
3460	*/
3461	if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3462	return sc->session->ext.hostname;
3463	} else {
3464	/**
3465	* Client side
3466	*
3467	* Before the handshake:
3468	* - If a servername has been set via a call to
3469	* SSL_set_tlsext_host_name() then it will return that servername
3470	* - If one has not been set, but a TLSv1.2 resumption is being
3471	* attempted and the session from the original handshake had a
3472	* servername accepted by the server then it will return that
3473	* servername
3474	* - Otherwise it returns NULL
3475	*
3476	* During/after the handshake (TLSv1.2 or below resumption occurred):
3477	* - If the session from the original handshake had a servername accepted
3478	* by the server then it will return that servername.
3479	* - Otherwise it returns the servername set via
3480	* SSL_set_tlsext_host_name() (or NULL if it was not called).
3481	*
3482	* During/after the handshake (TLSv1.2 or below resumption did not occur):
3483	* - It will return the servername set via SSL_set_tlsext_host_name()
3484	* (or NULL if it was not called).
3485	*/
3486	if (SSL_in_before(s)) {
3487	if (sc->ext.hostname == NULL
3488	&& sc->session != NULL
3489	&& sc->session->ssl_version != TLS1_3_VERSION)
3490	return sc->session->ext.hostname;
3491	} else {
3492	if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3493	&& sc->session->ext.hostname != NULL)
3494	return sc->session->ext.hostname;
3495	}
3496	}
3497
3498	return sc->ext.hostname;
3499	}
3500
3501	int SSL_get_servername_type(const SSL *s)
3502	{
3503	if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3504	return TLSEXT_NAMETYPE_host_name;
3505	return -1;
3506	}
3507
3508	/*
3509	* SSL_select_next_proto implements the standard protocol selection. It is
3510	* expected that this function is called from the callback set by
3511	* SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3512	* vector of 8-bit, length prefixed byte strings. The length byte itself is
3513	* not included in the length. A byte string of length 0 is invalid. No byte
3514	* string may be truncated. The current, but experimental algorithm for
3515	* selecting the protocol is: 1) If the server doesn't support NPN then this
3516	* is indicated to the callback. In this case, the client application has to
3517	* abort the connection or have a default application level protocol. 2) If
3518	* the server supports NPN, but advertises an empty list then the client
3519	* selects the first protocol in its list, but indicates via the API that this
3520	* fallback case was enacted. 3) Otherwise, the client finds the first
3521	* protocol in the server's list that it supports and selects this protocol.
3522	* This is because it's assumed that the server has better information about
3523	* which protocol a client should use. 4) If the client doesn't support any
3524	* of the server's advertised protocols, then this is treated the same as
3525	* case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3526	* found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3527	*/
3528	int SSL_select_next_proto(unsigned char *out, unsigned char outlen,
3529	const unsigned char *server,
3530	unsigned int server_len,
3531	const unsigned char *client, unsigned int client_len)
3532	{
3533	PACKET cpkt, csubpkt, spkt, ssubpkt;
3534
3535	if (!PACKET_buf_init(&cpkt, client, client_len)
3536	\|\| !PACKET_get_length_prefixed_1(&cpkt, &csubpkt)
3537	\|\| PACKET_remaining(&csubpkt) == 0) {
3538	*out = NULL;
3539	*outlen = 0;
3540	return OPENSSL_NPN_NO_OVERLAP;
3541	}
3542
3543	/*
3544	* Set the default opportunistic protocol. Will be overwritten if we find
3545	* a match.
3546	*/
3547	out = (unsigned char )PACKET_data(&csubpkt);
3548	*outlen = (unsigned char)PACKET_remaining(&csubpkt);
3549
3550	/*
3551	* For each protocol in server preference order, see if we support it.
3552	*/
3553	if (PACKET_buf_init(&spkt, server, server_len)) {
3554	while (PACKET_get_length_prefixed_1(&spkt, &ssubpkt)) {
3555	if (PACKET_remaining(&ssubpkt) == 0)
3556	continue; /* Invalid - ignore it */
3557	if (PACKET_buf_init(&cpkt, client, client_len)) {
3558	while (PACKET_get_length_prefixed_1(&cpkt, &csubpkt)) {
3559	if (PACKET_equal(&csubpkt, PACKET_data(&ssubpkt),
3560	PACKET_remaining(&ssubpkt))) {
3561	/* We found a match */
3562	out = (unsigned char )PACKET_data(&ssubpkt);
3563	*outlen = (unsigned char)PACKET_remaining(&ssubpkt);
3564	return OPENSSL_NPN_NEGOTIATED;
3565	}
3566	}
3567	/* Ignore spurious trailing bytes in the client list */
3568	} else {
3569	/* This should never happen */
3570	return OPENSSL_NPN_NO_OVERLAP;
3571	}
3572	}
3573	/* Ignore spurious trailing bytes in the server list */
3574	}
3575
3576	/*
3577	* There's no overlap between our protocols and the server's list. We use
3578	* the default opportunistic protocol selected earlier
3579	*/
3580	return OPENSSL_NPN_NO_OVERLAP;
3581	}
3582
3583	#ifndef OPENSSL_NO_NEXTPROTONEG
3584	/*
3585	* SSL_get0_next_proto_negotiated sets data and len to point to the
3586	* client's requested protocol for this connection and returns 0. If the
3587	* client didn't request any protocol, then *data is set to NULL. Note that
3588	* the client can request any protocol it chooses. The value returned from
3589	* this function need not be a member of the list of supported protocols
3590	* provided by the callback.
3591	*/
3592	void SSL_get0_next_proto_negotiated(const SSL s, const unsigned char *data,
3593	unsigned *len)
3594	{
3595	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3596
3597	if (sc == NULL) {
3598	/* We have no other way to indicate error */
3599	*data = NULL;
3600	*len = 0;
3601	return;
3602	}
3603
3604	*data = sc->ext.npn;
3605	if (*data == NULL) {
3606	*len = 0;
3607	} else {
3608	*len = (unsigned int)sc->ext.npn_len;
3609	}
3610	}
3611
3612	/*
3613	* SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3614	* a TLS server needs a list of supported protocols for Next Protocol
3615	* Negotiation. The returned list must be in wire format. The list is
3616	* returned by setting \|out\| to point to it and \|outlen\| to its length. This
3617	* memory will not be modified, but one should assume that the SSL* keeps a
3618	* reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3619	* wishes to advertise. Otherwise, no such extension will be included in the
3620	* ServerHello.
3621	*/
3622	void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3623	SSL_CTX_npn_advertised_cb_func cb,
3624	void *arg)
3625	{
3626	if (IS_QUIC_CTX(ctx))
3627	/* NPN not allowed for QUIC */
3628	return;
3629
3630	ctx->ext.npn_advertised_cb = cb;
3631	ctx->ext.npn_advertised_cb_arg = arg;
3632	}
3633
3634	/*
3635	* SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3636	* client needs to select a protocol from the server's provided list. \|out\|
3637	* must be set to point to the selected protocol (which may be within \|in\|).
3638	* The length of the protocol name must be written into \|outlen\|. The
3639	* server's advertised protocols are provided in \|in\| and \|inlen\|. The
3640	* callback can assume that \|in\| is syntactically valid. The client must
3641	* select a protocol. It is fatal to the connection if this callback returns
3642	* a value other than SSL_TLSEXT_ERR_OK.
3643	*/
3644	void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3645	SSL_CTX_npn_select_cb_func cb,
3646	void *arg)
3647	{
3648	if (IS_QUIC_CTX(ctx))
3649	/* NPN not allowed for QUIC */
3650	return;
3651
3652	ctx->ext.npn_select_cb = cb;
3653	ctx->ext.npn_select_cb_arg = arg;
3654	}
3655	#endif
3656
3657	static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3658	{
3659	unsigned int idx;
3660
3661	if (protos_len < 2 \|\| protos == NULL)
3662	return 0;
3663
3664	for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3665	if (protos[idx] == 0)
3666	return 0;
3667	}
3668	return idx == protos_len;
3669	}
3670	/*
3671	* SSL_CTX_set_alpn_protos sets the ALPN protocol list on \|ctx\| to \|protos\|.
3672	* \|protos\| must be in wire-format (i.e. a series of non-empty, 8-bit
3673	* length-prefixed strings). Returns 0 on success.
3674	*/
3675	int SSL_CTX_set_alpn_protos(SSL_CTX ctx, const unsigned char protos,
3676	unsigned int protos_len)
3677	{
3678	unsigned char *alpn;
3679
3680	if (protos_len == 0 \|\| protos == NULL) {
3681	OPENSSL_free(ctx->ext.alpn);
3682	ctx->ext.alpn = NULL;
3683	ctx->ext.alpn_len = 0;
3684	return 0;
3685	}
3686	/* Not valid per RFC */
3687	if (!alpn_value_ok(protos, protos_len))
3688	return 1;
3689
3690	alpn = OPENSSL_memdup(protos, protos_len);
3691	if (alpn == NULL)
3692	return 1;
3693	OPENSSL_free(ctx->ext.alpn);
3694	ctx->ext.alpn = alpn;
3695	ctx->ext.alpn_len = protos_len;
3696
3697	return 0;
3698	}
3699
3700	/*
3701	* SSL_set_alpn_protos sets the ALPN protocol list on \|ssl\| to \|protos\|.
3702	* \|protos\| must be in wire-format (i.e. a series of non-empty, 8-bit
3703	* length-prefixed strings). Returns 0 on success.
3704	*/
3705	int SSL_set_alpn_protos(SSL ssl, const unsigned char protos,
3706	unsigned int protos_len)
3707	{
3708	unsigned char *alpn;
3709	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3710
3711	if (sc == NULL)
3712	return 1;
3713
3714	if (protos_len == 0 \|\| protos == NULL) {
3715	OPENSSL_free(sc->ext.alpn);
3716	sc->ext.alpn = NULL;
3717	sc->ext.alpn_len = 0;
3718	return 0;
3719	}
3720	/* Not valid per RFC */
3721	if (!alpn_value_ok(protos, protos_len))
3722	return 1;
3723
3724	alpn = OPENSSL_memdup(protos, protos_len);
3725	if (alpn == NULL)
3726	return 1;
3727	OPENSSL_free(sc->ext.alpn);
3728	sc->ext.alpn = alpn;
3729	sc->ext.alpn_len = protos_len;
3730
3731	return 0;
3732	}
3733
3734	/*
3735	* SSL_CTX_set_alpn_select_cb sets a callback function on \|ctx\| that is
3736	* called during ClientHello processing in order to select an ALPN protocol
3737	* from the client's list of offered protocols.
3738	*/
3739	void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3740	SSL_CTX_alpn_select_cb_func cb,
3741	void *arg)
3742	{
3743	ctx->ext.alpn_select_cb = cb;
3744	ctx->ext.alpn_select_cb_arg = arg;
3745	}
3746
3747	/*
3748	* SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from \|ssl\|.
3749	* On return it sets \|data\| to point to \|len\| bytes of protocol name
3750	* (not including the leading length-prefix byte). If the server didn't
3751	* respond with a negotiated protocol then \|*len\| will be zero.
3752	*/
3753	void SSL_get0_alpn_selected(const SSL ssl, const unsigned char *data,
3754	unsigned int *len)
3755	{
3756	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3757
3758	if (sc == NULL) {
3759	/* We have no other way to indicate error */
3760	*data = NULL;
3761	*len = 0;
3762	return;
3763	}
3764
3765	*data = sc->s3.alpn_selected;
3766	if (*data == NULL)
3767	*len = 0;
3768	else
3769	*len = (unsigned int)sc->s3.alpn_selected_len;
3770	}
3771
3772	int SSL_export_keying_material(SSL s, unsigned char out, size_t olen,
3773	const char *label, size_t llen,
3774	const unsigned char *context, size_t contextlen,
3775	int use_context)
3776	{
3777	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3778
3779	if (sc == NULL)
3780	return -1;
3781
3782	if (sc->session == NULL
3783	\|\| (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3784	return -1;
3785
3786	return sc->ssl.method->ssl3_enc->export_keying_material(sc, out, olen, label,
3787	llen, context,
3788	contextlen,
3789	use_context);
3790	}
3791
3792	int SSL_export_keying_material_early(SSL s, unsigned char out, size_t olen,
3793	const char *label, size_t llen,
3794	const unsigned char *context,
3795	size_t contextlen)
3796	{
3797	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3798
3799	if (sc == NULL)
3800	return -1;
3801
3802	if (sc->version != TLS1_3_VERSION)
3803	return 0;
3804
3805	return tls13_export_keying_material_early(sc, out, olen, label, llen,
3806	context, contextlen);
3807	}
3808
3809	static unsigned long ssl_session_hash(const SSL_SESSION *a)
3810	{
3811	const unsigned char *session_id = a->session_id;
3812	unsigned long l;
3813	unsigned char tmp_storage[4];
3814
3815	if (a->session_id_length < sizeof(tmp_storage)) {
3816	memset(tmp_storage, 0, sizeof(tmp_storage));
3817	memcpy(tmp_storage, a->session_id, a->session_id_length);
3818	session_id = tmp_storage;
3819	}
3820
3821	l = (unsigned long)
3822	((unsigned long)session_id[0]) \|
3823	((unsigned long)session_id[1] << 8L) \|
3824	((unsigned long)session_id[2] << 16L) \|
3825	((unsigned long)session_id[3] << 24L);
3826	return l;
3827	}
3828
3829	/*
3830	* NB: If this function (or indeed the hash function which uses a sort of
3831	* coarser function than this one) is changed, ensure
3832	* SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3833	* being able to construct an SSL_SESSION that will collide with any existing
3834	* session with a matching session ID.
3835	*/
3836	static int ssl_session_cmp(const SSL_SESSION a, const SSL_SESSION b)
3837	{
3838	if (a->ssl_version != b->ssl_version)
3839	return 1;
3840	if (a->session_id_length != b->session_id_length)
3841	return 1;
3842	return memcmp(a->session_id, b->session_id, a->session_id_length);
3843	}
3844
3845	/*
3846	* These wrapper functions should remain rather than redeclaring
3847	* SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3848	* variable. The reason is that the functions aren't static, they're exposed
3849	* via ssl.h.
3850	*/
3851
3852	SSL_CTX SSL_CTX_new_ex(OSSL_LIB_CTX libctx, const char *propq,
3853	const SSL_METHOD *meth)
3854	{
3855	SSL_CTX *ret = NULL;
3856	#ifndef OPENSSL_NO_COMP_ALG
3857	int i;
3858	#endif
3859
3860	if (meth == NULL) {
3861	ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3862	return NULL;
3863	}
3864
3865	if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3866	return NULL;
3867
3868	/* Doing this for the run once effect */
3869	if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3870	ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3871	goto err;
3872	}
3873
3874	ret = OPENSSL_zalloc(sizeof(*ret));
3875	if (ret == NULL)
3876	return NULL;
3877
3878	/* Init the reference counting before any call to SSL_CTX_free */
3879	if (!CRYPTO_NEW_REF(&ret->references, 1)) {
3880	OPENSSL_free(ret);
3881	return NULL;
3882	}
3883
3884	ret->lock = CRYPTO_THREAD_lock_new();
3885	if (ret->lock == NULL) {
3886	ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3887	goto err;
3888	}
3889
3890	#ifdef TSAN_REQUIRES_LOCKING
3891	ret->tsan_lock = CRYPTO_THREAD_lock_new();
3892	if (ret->tsan_lock == NULL) {
3893	ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3894	goto err;
3895	}
3896	#endif
3897
3898	ret->libctx = libctx;
3899	if (propq != NULL) {
3900	ret->propq = OPENSSL_strdup(propq);
3901	if (ret->propq == NULL)
3902	goto err;
3903	}
3904
3905	ret->method = meth;
3906	ret->min_proto_version = 0;
3907	ret->max_proto_version = 0;
3908	ret->mode = SSL_MODE_AUTO_RETRY;
3909	ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3910	ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3911	/* We take the system default. */
3912	ret->session_timeout = meth->get_timeout();
3913	ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3914	ret->verify_mode = SSL_VERIFY_NONE;
3915
3916	ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3917	if (ret->sessions == NULL) {
3918	ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3919	goto err;
3920	}
3921	ret->cert_store = X509_STORE_new();
3922	if (ret->cert_store == NULL) {
3923	ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3924	goto err;
3925	}
3926	#ifndef OPENSSL_NO_CT
3927	ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3928	if (ret->ctlog_store == NULL) {
3929	ERR_raise(ERR_LIB_SSL, ERR_R_CT_LIB);
3930	goto err;
3931	}
3932	#endif
3933
3934	/* initialize cipher/digest methods table */
3935	if (!ssl_load_ciphers(ret)) {
3936	ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3937	goto err;
3938	}
3939
3940	if (!ssl_load_groups(ret)) {
3941	ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3942	goto err;
3943	}
3944
3945	/* load provider sigalgs */
3946	if (!ssl_load_sigalgs(ret)) {
3947	ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3948	goto err;
3949	}
3950
3951	/* initialise sig algs */
3952	if (!ssl_setup_sigalgs(ret)) {
3953	ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3954	goto err;
3955	}
3956
3957	if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites())) {
3958	ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3959	goto err;
3960	}
3961
3962	if ((ret->cert = ssl_cert_new(SSL_PKEY_NUM + ret->sigalg_list_len)) == NULL) {
3963	ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3964	goto err;
3965	}
3966
3967	if (!ssl_create_cipher_list(ret,
3968	ret->tls13_ciphersuites,
3969	&ret->cipher_list, &ret->cipher_list_by_id,
3970	OSSL_default_cipher_list(), ret->cert)
3971	\|\| sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3972	ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3973	goto err;
3974	}
3975
3976	ret->param = X509_VERIFY_PARAM_new();
3977	if (ret->param == NULL) {
3978	ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3979	goto err;
3980	}
3981
3982	/*
3983	* If these aren't available from the provider we'll get NULL returns.
3984	* That's fine but will cause errors later if SSLv3 is negotiated
3985	*/
3986	ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3987	ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3988
3989	if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL) {
3990	ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3991	goto err;
3992	}
3993
3994	if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL) {
3995	ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3996	goto err;
3997	}
3998
3999	if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data)) {
4000	ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
4001	goto err;
4002	}
4003
4004	if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
4005	goto err;
4006
4007	/* No compression for DTLS */
4008	if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
4009	ret->comp_methods = SSL_COMP_get_compression_methods();
4010
4011	ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
4012	ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
4013
4014	/* Setup RFC5077 ticket keys */
4015	if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
4016	sizeof(ret->ext.tick_key_name), 0) <= 0)
4017	\|\| (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
4018	sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
4019	\|\| (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
4020	sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
4021	ret->options \|= SSL_OP_NO_TICKET;
4022
4023	if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
4024	sizeof(ret->ext.cookie_hmac_key), 0) <= 0) {
4025	ERR_raise(ERR_LIB_SSL, ERR_R_RAND_LIB);
4026	goto err;
4027	}
4028
4029	#ifndef OPENSSL_NO_SRP
4030	if (!ssl_ctx_srp_ctx_init_intern(ret)) {
4031	ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
4032	goto err;
4033	}
4034	#endif
4035	#ifndef OPENSSL_NO_ENGINE
4036	# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
4037	# define eng_strx(x) #x
4038	# define eng_str(x) eng_strx(x)
4039	/* Use specific client engine automatically... ignore errors */
4040	{
4041	ENGINE *eng;
4042	eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
4043	if (!eng) {
4044	ERR_clear_error();
4045	ENGINE_load_builtin_engines();
4046	eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
4047	}
4048	if (!eng \|\| !SSL_CTX_set_client_cert_engine(ret, eng))
4049	ERR_clear_error();
4050	}
4051	# endif
4052	#endif
4053
4054	#ifndef OPENSSL_NO_COMP_ALG
4055	/*
4056	* Set the default order: brotli, zlib, zstd
4057	* Including only those enabled algorithms
4058	*/
4059	memset(ret->cert_comp_prefs, 0, sizeof(ret->cert_comp_prefs));
4060	i = 0;
4061	if (ossl_comp_has_alg(TLSEXT_comp_cert_brotli))
4062	ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_brotli;
4063	if (ossl_comp_has_alg(TLSEXT_comp_cert_zlib))
4064	ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zlib;
4065	if (ossl_comp_has_alg(TLSEXT_comp_cert_zstd))
4066	ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zstd;
4067	#endif
4068	/*
4069	* Disable compression by default to prevent CRIME. Applications can
4070	* re-enable compression by configuring
4071	* SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
4072	* or by using the SSL_CONF library. Similarly we also enable TLSv1.3
4073	* middlebox compatibility by default. This may be disabled by default in
4074	* a later OpenSSL version.
4075	*/
4076	ret->options \|= SSL_OP_NO_COMPRESSION \| SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
4077
4078	ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
4079
4080	/*
4081	* We cannot usefully set a default max_early_data here (which gets
4082	* propagated in SSL_new(), for the following reason: setting the
4083	* SSL field causes tls_construct_stoc_early_data() to tell the
4084	* client that early data will be accepted when constructing a TLS 1.3
4085	* session ticket, and the client will accordingly send us early data
4086	* when using that ticket (if the client has early data to send).
4087	* However, in order for the early data to actually be consumed by
4088	* the application, the application must also have calls to
4089	* SSL_read_early_data(); otherwise we'll just skip past the early data
4090	* and ignore it. So, since the application must add calls to
4091	* SSL_read_early_data(), we also require them to add
4092	* calls to SSL_CTX_set_max_early_data() in order to use early data,
4093	* eliminating the bandwidth-wasting early data in the case described
4094	* above.
4095	*/
4096	ret->max_early_data = 0;
4097
4098	/*
4099	* Default recv_max_early_data is a fully loaded single record. Could be
4100	* split across multiple records in practice. We set this differently to
4101	* max_early_data so that, in the default case, we do not advertise any
4102	* support for early_data, but if a client were to send us some (e.g.
4103	* because of an old, stale ticket) then we will tolerate it and skip over
4104	* it.
4105	*/
4106	ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
4107
4108	/* By default we send two session tickets automatically in TLSv1.3 */
4109	ret->num_tickets = 2;
4110
4111	ssl_ctx_system_config(ret);
4112
4113	return ret;
4114	err:
4115	SSL_CTX_free(ret);
4116	return NULL;
4117	}
4118
4119	SSL_CTX SSL_CTX_new(const SSL_METHOD meth)
4120	{
4121	return SSL_CTX_new_ex(NULL, NULL, meth);
4122	}
4123
4124	int SSL_CTX_up_ref(SSL_CTX *ctx)
4125	{
4126	int i;
4127
4128	if (CRYPTO_UP_REF(&ctx->references, &i) <= 0)
4129	return 0;
4130
4131	REF_PRINT_COUNT("SSL_CTX", ctx);
4132	REF_ASSERT_ISNT(i < 2);
4133	return ((i > 1) ? 1 : 0);
4134	}
4135
4136	void SSL_CTX_free(SSL_CTX *a)
4137	{
4138	int i;
4139	size_t j;
4140
4141	if (a == NULL)
4142	return;
4143
4144	CRYPTO_DOWN_REF(&a->references, &i);
4145	REF_PRINT_COUNT("SSL_CTX", a);
4146	if (i > 0)
4147	return;
4148	REF_ASSERT_ISNT(i < 0);
4149
4150	X509_VERIFY_PARAM_free(a->param);
4151	dane_ctx_final(&a->dane);
4152
4153	/*
4154	* Free internal session cache. However: the remove_cb() may reference
4155	* the ex_data of SSL_CTX, thus the ex_data store can only be removed
4156	* after the sessions were flushed.
4157	* As the ex_data handling routines might also touch the session cache,
4158	* the most secure solution seems to be: empty (flush) the cache, then
4159	* free ex_data, then finally free the cache.
4160	* (See ticket [openssl.org #212].)
4161	*/
4162	if (a->sessions != NULL)
4163	SSL_CTX_flush_sessions(a, 0);
4164
4165	CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
4166	lh_SSL_SESSION_free(a->sessions);
4167	X509_STORE_free(a->cert_store);
4168	#ifndef OPENSSL_NO_CT
4169	CTLOG_STORE_free(a->ctlog_store);
4170	#endif
4171	sk_SSL_CIPHER_free(a->cipher_list);
4172	sk_SSL_CIPHER_free(a->cipher_list_by_id);
4173	sk_SSL_CIPHER_free(a->tls13_ciphersuites);
4174	ssl_cert_free(a->cert);
4175	sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
4176	sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
4177	OSSL_STACK_OF_X509_free(a->extra_certs);
4178	a->comp_methods = NULL;
4179	#ifndef OPENSSL_NO_SRTP
4180	sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
4181	#endif
4182	#ifndef OPENSSL_NO_SRP
4183	ssl_ctx_srp_ctx_free_intern(a);
4184	#endif
4185	#ifndef OPENSSL_NO_ENGINE
4186	tls_engine_finish(a->client_cert_engine);
4187	#endif
4188
4189	OPENSSL_free(a->ext.ecpointformats);
4190	OPENSSL_free(a->ext.supportedgroups);
4191	OPENSSL_free(a->ext.supported_groups_default);
4192	OPENSSL_free(a->ext.alpn);
4193	OPENSSL_secure_free(a->ext.secure);
4194
4195	ssl_evp_md_free(a->md5);
4196	ssl_evp_md_free(a->sha1);
4197
4198	for (j = 0; j < SSL_ENC_NUM_IDX; j++)
4199	ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
4200	for (j = 0; j < SSL_MD_NUM_IDX; j++)
4201	ssl_evp_md_free(a->ssl_digest_methods[j]);
4202	for (j = 0; j < a->group_list_len; j++) {
4203	OPENSSL_free(a->group_list[j].tlsname);
4204	OPENSSL_free(a->group_list[j].realname);
4205	OPENSSL_free(a->group_list[j].algorithm);
4206	}
4207	OPENSSL_free(a->group_list);
4208	for (j = 0; j < a->sigalg_list_len; j++) {
4209	OPENSSL_free(a->sigalg_list[j].name);
4210	OPENSSL_free(a->sigalg_list[j].sigalg_name);
4211	OPENSSL_free(a->sigalg_list[j].sigalg_oid);
4212	OPENSSL_free(a->sigalg_list[j].sig_name);
4213	OPENSSL_free(a->sigalg_list[j].sig_oid);
4214	OPENSSL_free(a->sigalg_list[j].hash_name);
4215	OPENSSL_free(a->sigalg_list[j].hash_oid);
4216	OPENSSL_free(a->sigalg_list[j].keytype);
4217	OPENSSL_free(a->sigalg_list[j].keytype_oid);
4218	}
4219	OPENSSL_free(a->sigalg_list);
4220	OPENSSL_free(a->ssl_cert_info);
4221
4222	OPENSSL_free(a->sigalg_lookup_cache);
4223	OPENSSL_free(a->tls12_sigalgs);
4224
4225	OPENSSL_free(a->client_cert_type);
4226	OPENSSL_free(a->server_cert_type);
4227
4228	CRYPTO_THREAD_lock_free(a->lock);
4229	CRYPTO_FREE_REF(&a->references);
4230	#ifdef TSAN_REQUIRES_LOCKING
4231	CRYPTO_THREAD_lock_free(a->tsan_lock);
4232	#endif
4233
4234	OPENSSL_free(a->propq);
4235	#ifndef OPENSSL_NO_QLOG
4236	OPENSSL_free(a->qlog_title);
4237	#endif
4238
4239	OPENSSL_free(a);
4240	}
4241
4242	void SSL_CTX_set_default_passwd_cb(SSL_CTX ctx, pem_password_cb cb)
4243	{
4244	ctx->default_passwd_callback = cb;
4245	}
4246
4247	void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX ctx, void u)
4248	{
4249	ctx->default_passwd_callback_userdata = u;
4250	}
4251
4252	pem_password_cb SSL_CTX_get_default_passwd_cb(SSL_CTX ctx)
4253	{
4254	return ctx->default_passwd_callback;
4255	}
4256
4257	void SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX ctx)
4258	{
4259	return ctx->default_passwd_callback_userdata;
4260	}
4261
4262	void SSL_set_default_passwd_cb(SSL s, pem_password_cb cb)
4263	{
4264	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4265
4266	if (sc == NULL)
4267	return;
4268
4269	sc->default_passwd_callback = cb;
4270	}
4271
4272	void SSL_set_default_passwd_cb_userdata(SSL s, void u)
4273	{
4274	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4275
4276	if (sc == NULL)
4277	return;
4278
4279	sc->default_passwd_callback_userdata = u;
4280	}
4281
4282	pem_password_cb SSL_get_default_passwd_cb(SSL s)
4283	{
4284	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4285
4286	if (sc == NULL)
4287	return NULL;
4288
4289	return sc->default_passwd_callback;
4290	}
4291
4292	void SSL_get_default_passwd_cb_userdata(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_userdata;
4300	}
4301
4302	void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4303	int (cb) (X509_STORE_CTX , void *),
4304	void *arg)
4305	{
4306	ctx->app_verify_callback = cb;
4307	ctx->app_verify_arg = arg;
4308	}
4309
4310	void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4311	int (cb) (int, X509_STORE_CTX ))
4312	{
4313	ctx->verify_mode = mode;
4314	ctx->default_verify_callback = cb;
4315	}
4316
4317	void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4318	{
4319	X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4320	}
4321
4322	void SSL_CTX_set_cert_cb(SSL_CTX c, int (cb) (SSL ssl, void arg), void *arg)
4323	{
4324	ssl_cert_set_cert_cb(c->cert, cb, arg);
4325	}
4326
4327	void SSL_set_cert_cb(SSL s, int (cb) (SSL ssl, void arg), void *arg)
4328	{
4329	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4330
4331	if (sc == NULL)
4332	return;
4333
4334	ssl_cert_set_cert_cb(sc->cert, cb, arg);
4335	}
4336
4337	void ssl_set_masks(SSL_CONNECTION *s)
4338	{
4339	CERT *c = s->cert;
4340	uint32_t *pvalid = s->s3.tmp.valid_flags;
4341	int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4342	unsigned long mask_k, mask_a;
4343	int have_ecc_cert, ecdsa_ok;
4344
4345	if (c == NULL)
4346	return;
4347
4348	dh_tmp = (c->dh_tmp != NULL
4349	\|\| c->dh_tmp_cb != NULL
4350	\|\| c->dh_tmp_auto);
4351
4352	rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4353	rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4354	dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4355	have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4356	mask_k = 0;
4357	mask_a = 0;
4358
4359	OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4360	dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4361
4362	#ifndef OPENSSL_NO_GOST
4363	if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4364	mask_k \|= SSL_kGOST \| SSL_kGOST18;
4365	mask_a \|= SSL_aGOST12;
4366	}
4367	if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4368	mask_k \|= SSL_kGOST \| SSL_kGOST18;
4369	mask_a \|= SSL_aGOST12;
4370	}
4371	if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4372	mask_k \|= SSL_kGOST;
4373	mask_a \|= SSL_aGOST01;
4374	}
4375	#endif
4376
4377	if (rsa_enc)
4378	mask_k \|= SSL_kRSA;
4379
4380	if (dh_tmp)
4381	mask_k \|= SSL_kDHE;
4382
4383	/*
4384	* If we only have an RSA-PSS certificate allow RSA authentication
4385	* if TLS 1.2 and peer supports it.
4386	*/
4387
4388	if (rsa_enc \|\| rsa_sign \|\| (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4389	&& pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4390	&& TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4391	mask_a \|= SSL_aRSA;
4392
4393	if (dsa_sign) {
4394	mask_a \|= SSL_aDSS;
4395	}
4396
4397	mask_a \|= SSL_aNULL;
4398
4399	/*
4400	* You can do anything with an RPK key, since there's no cert to restrict it
4401	* But we need to check for private keys
4402	*/
4403	if (pvalid[SSL_PKEY_RSA] & CERT_PKEY_RPK) {
4404	mask_a \|= SSL_aRSA;
4405	mask_k \|= SSL_kRSA;
4406	}
4407	if (pvalid[SSL_PKEY_ECC] & CERT_PKEY_RPK)
4408	mask_a \|= SSL_aECDSA;
4409	if (TLS1_get_version(&s->ssl) == TLS1_2_VERSION) {
4410	if (pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_RPK)
4411	mask_a \|= SSL_aRSA;
4412	if (pvalid[SSL_PKEY_ED25519] & CERT_PKEY_RPK
4413	\|\| pvalid[SSL_PKEY_ED448] & CERT_PKEY_RPK)
4414	mask_a \|= SSL_aECDSA;
4415	}
4416
4417	/*
4418	* An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4419	* depending on the key usage extension.
4420	*/
4421	if (have_ecc_cert) {
4422	uint32_t ex_kusage;
4423	ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4424	ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4425	if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4426	ecdsa_ok = 0;
4427	if (ecdsa_ok)
4428	mask_a \|= SSL_aECDSA;
4429	}
4430	/* Allow Ed25519 for TLS 1.2 if peer supports it */
4431	if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4432	&& pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4433	&& TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4434	mask_a \|= SSL_aECDSA;
4435
4436	/* Allow Ed448 for TLS 1.2 if peer supports it */
4437	if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4438	&& pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4439	&& TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4440	mask_a \|= SSL_aECDSA;
4441
4442	mask_k \|= SSL_kECDHE;
4443
4444	#ifndef OPENSSL_NO_PSK
4445	mask_k \|= SSL_kPSK;
4446	mask_a \|= SSL_aPSK;
4447	if (mask_k & SSL_kRSA)
4448	mask_k \|= SSL_kRSAPSK;
4449	if (mask_k & SSL_kDHE)
4450	mask_k \|= SSL_kDHEPSK;
4451	if (mask_k & SSL_kECDHE)
4452	mask_k \|= SSL_kECDHEPSK;
4453	#endif
4454
4455	s->s3.tmp.mask_k = mask_k;
4456	s->s3.tmp.mask_a = mask_a;
4457	}
4458
4459	int ssl_check_srvr_ecc_cert_and_alg(X509 x, SSL_CONNECTION s)
4460	{
4461	if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4462	/* key usage, if present, must allow signing */
4463	if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4464	ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4465	return 0;
4466	}
4467	}
4468	return 1; /* all checks are ok */
4469	}
4470
4471	int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4472	const unsigned char **serverinfo,
4473	size_t *serverinfo_length)
4474	{
4475	CERT_PKEY *cpk = s->s3.tmp.cert;
4476	*serverinfo_length = 0;
4477
4478	if (cpk == NULL \|\| cpk->serverinfo == NULL)
4479	return 0;
4480
4481	*serverinfo = cpk->serverinfo;
4482	*serverinfo_length = cpk->serverinfo_length;
4483	return 1;
4484	}
4485
4486	void ssl_update_cache(SSL_CONNECTION *s, int mode)
4487	{
4488	int i;
4489
4490	/*
4491	* If the session_id_length is 0, we are not supposed to cache it, and it
4492	* would be rather hard to do anyway :-). Also if the session has already
4493	* been marked as not_resumable we should not cache it for later reuse.
4494	*/
4495	if (s->session->session_id_length == 0 \|\| s->session->not_resumable)
4496	return;
4497
4498	/*
4499	* If sid_ctx_length is 0 there is no specific application context
4500	* associated with this session, so when we try to resume it and
4501	* SSL_VERIFY_PEER is requested to verify the client identity, we have no
4502	* indication that this is actually a session for the proper application
4503	* context, and the handshake will fail, not just the resumption attempt.
4504	* Do not cache (on the server) these sessions that are not resumable
4505	* (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4506	*/
4507	if (s->server && s->session->sid_ctx_length == 0
4508	&& (s->verify_mode & SSL_VERIFY_PEER) != 0)
4509	return;
4510
4511	i = s->session_ctx->session_cache_mode;
4512	if ((i & mode) != 0
4513	&& (!s->hit \|\| SSL_CONNECTION_IS_TLS13(s))) {
4514	/*
4515	* Add the session to the internal cache. In server side TLSv1.3 we
4516	* normally don't do this because by default it's a full stateless ticket
4517	* with only a dummy session id so there is no reason to cache it,
4518	* unless:
4519	* - we are doing early_data, in which case we cache so that we can
4520	* detect replays
4521	* - the application has set a remove_session_cb so needs to know about
4522	* session timeout events
4523	* - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4524	*/
4525	if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4526	&& (!SSL_CONNECTION_IS_TLS13(s)
4527	\|\| !s->server
4528	\|\| (s->max_early_data > 0
4529	&& (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4530	\|\| s->session_ctx->remove_session_cb != NULL
4531	\|\| (s->options & SSL_OP_NO_TICKET) != 0))
4532	SSL_CTX_add_session(s->session_ctx, s->session);
4533
4534	/*
4535	* Add the session to the external cache. We do this even in server side
4536	* TLSv1.3 without early data because some applications just want to
4537	* know about the creation of a session and aren't doing a full cache.
4538	*/
4539	if (s->session_ctx->new_session_cb != NULL) {
4540	SSL_SESSION_up_ref(s->session);
4541	if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4542	s->session))
4543	SSL_SESSION_free(s->session);
4544	}
4545	}
4546
4547	/* auto flush every 255 connections */
4548	if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4549	TSAN_QUALIFIER int *stat;
4550
4551	if (mode & SSL_SESS_CACHE_CLIENT)
4552	stat = &s->session_ctx->stats.sess_connect_good;
4553	else
4554	stat = &s->session_ctx->stats.sess_accept_good;
4555	if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4556	SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
4557	}
4558	}
4559
4560	const SSL_METHOD SSL_CTX_get_ssl_method(const SSL_CTX ctx)
4561	{
4562	return ctx->method;
4563	}
4564
4565	const SSL_METHOD SSL_get_ssl_method(const SSL s)
4566	{
4567	return s->method;
4568	}
4569
4570	int SSL_set_ssl_method(SSL s, const SSL_METHOD meth)
4571	{
4572	int ret = 1;
4573	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4574
4575	/* Not allowed for QUIC */
4576	if (sc == NULL
4577	\|\| (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth)
4578	\|\| (s->type == SSL_TYPE_SSL_CONNECTION && IS_QUIC_METHOD(meth)))
4579	return 0;
4580
4581	if (s->method != meth) {
4582	const SSL_METHOD *sm = s->method;
4583	int (hf) (SSL ) = sc->handshake_func;
4584
4585	if (sm->version == meth->version)
4586	s->method = meth;
4587	else {
4588	sm->ssl_deinit(s);
4589	s->method = meth;
4590	ret = s->method->ssl_init(s);
4591	}
4592
4593	if (hf == sm->ssl_connect)
4594	sc->handshake_func = meth->ssl_connect;
4595	else if (hf == sm->ssl_accept)
4596	sc->handshake_func = meth->ssl_accept;
4597	}
4598	return ret;
4599	}
4600
4601	int SSL_get_error(const SSL *s, int i)
4602	{
4603	return ossl_ssl_get_error(s, i, /check_err=/1);
4604	}
4605
4606	int ossl_ssl_get_error(const SSL *s, int i, int check_err)
4607	{
4608	int reason;
4609	unsigned long l;
4610	BIO *bio;
4611	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4612
4613	if (i > 0)
4614	return SSL_ERROR_NONE;
4615
4616	#ifndef OPENSSL_NO_QUIC
4617	if (IS_QUIC(s)) {
4618	reason = ossl_quic_get_error(s, i);
4619	if (reason != SSL_ERROR_NONE)
4620	return reason;
4621	}
4622	#endif
4623
4624	if (sc == NULL)
4625	return SSL_ERROR_SSL;
4626
4627	/*
4628	* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4629	* where we do encode the error
4630	*/
4631	if (check_err && (l = ERR_peek_error()) != 0) {
4632	if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4633	return SSL_ERROR_SYSCALL;
4634	else
4635	return SSL_ERROR_SSL;
4636	}
4637
4638	#ifndef OPENSSL_NO_QUIC
4639	if (!IS_QUIC(s))
4640	#endif
4641	{
4642	if (SSL_want_read(s)) {
4643	bio = SSL_get_rbio(s);
4644	if (BIO_should_read(bio))
4645	return SSL_ERROR_WANT_READ;
4646	else if (BIO_should_write(bio))
4647	/*
4648	* This one doesn't make too much sense ... We never try to
4649	* write to the rbio, and an application program where rbio and
4650	* wbio are separate couldn't even know what it should wait for.
4651	* However if we ever set s->rwstate incorrectly (so that we
4652	* have SSL_want_read(s) instead of SSL_want_write(s)) and rbio
4653	* and wbio are the same, this test works around that bug; so
4654	* it might be safer to keep it.
4655	*/
4656	return SSL_ERROR_WANT_WRITE;
4657	else if (BIO_should_io_special(bio)) {
4658	reason = BIO_get_retry_reason(bio);
4659	if (reason == BIO_RR_CONNECT)
4660	return SSL_ERROR_WANT_CONNECT;
4661	else if (reason == BIO_RR_ACCEPT)
4662	return SSL_ERROR_WANT_ACCEPT;
4663	else
4664	return SSL_ERROR_SYSCALL; /* unknown */
4665	}
4666	}
4667
4668	if (SSL_want_write(s)) {
4669	/*
4670	* Access wbio directly - in order to use the buffered bio if
4671	* present
4672	*/
4673	bio = sc->wbio;
4674	if (BIO_should_write(bio))
4675	return SSL_ERROR_WANT_WRITE;
4676	else if (BIO_should_read(bio))
4677	/*
4678	* See above (SSL_want_read(s) with BIO_should_write(bio))
4679	*/
4680	return SSL_ERROR_WANT_READ;
4681	else if (BIO_should_io_special(bio)) {
4682	reason = BIO_get_retry_reason(bio);
4683	if (reason == BIO_RR_CONNECT)
4684	return SSL_ERROR_WANT_CONNECT;
4685	else if (reason == BIO_RR_ACCEPT)
4686	return SSL_ERROR_WANT_ACCEPT;
4687	else
4688	return SSL_ERROR_SYSCALL;
4689	}
4690	}
4691	}
4692
4693	if (SSL_want_x509_lookup(s))
4694	return SSL_ERROR_WANT_X509_LOOKUP;
4695	if (SSL_want_retry_verify(s))
4696	return SSL_ERROR_WANT_RETRY_VERIFY;
4697	if (SSL_want_async(s))
4698	return SSL_ERROR_WANT_ASYNC;
4699	if (SSL_want_async_job(s))
4700	return SSL_ERROR_WANT_ASYNC_JOB;
4701	if (SSL_want_client_hello_cb(s))
4702	return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4703
4704	if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4705	(sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4706	return SSL_ERROR_ZERO_RETURN;
4707
4708	return SSL_ERROR_SYSCALL;
4709	}
4710
4711	static int ssl_do_handshake_intern(void *vargs)
4712	{
4713	struct ssl_async_args args = (struct ssl_async_args )vargs;
4714	SSL *s = args->s;
4715	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4716
4717	if (sc == NULL)
4718	return -1;
4719
4720	return sc->handshake_func(s);
4721	}
4722
4723	int SSL_do_handshake(SSL *s)
4724	{
4725	int ret = 1;
4726	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4727
4728	#ifndef OPENSSL_NO_QUIC
4729	if (IS_QUIC(s))
4730	return ossl_quic_do_handshake(s);
4731	#endif
4732
4733	if (sc->handshake_func == NULL) {
4734	ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4735	return -1;
4736	}
4737
4738	ossl_statem_check_finish_init(sc, -1);
4739
4740	s->method->ssl_renegotiate_check(s, 0);
4741
4742	if (SSL_in_init(s) \|\| SSL_in_before(s)) {
4743	if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4744	struct ssl_async_args args;
4745
4746	memset(&args, 0, sizeof(args));
4747	args.s = s;
4748
4749	ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4750	} else {
4751	ret = sc->handshake_func(s);
4752	}
4753	}
4754	return ret;
4755	}
4756
4757	void SSL_set_accept_state(SSL *s)
4758	{
4759	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4760
4761	#ifndef OPENSSL_NO_QUIC
4762	if (IS_QUIC(s)) {
4763	ossl_quic_set_accept_state(s);
4764	return;
4765	}
4766	#endif
4767
4768	sc->server = 1;
4769	sc->shutdown = 0;
4770	ossl_statem_clear(sc);
4771	sc->handshake_func = s->method->ssl_accept;
4772	/* Ignore return value. Its a void public API function */
4773	RECORD_LAYER_reset(&sc->rlayer);
4774	}
4775
4776	void SSL_set_connect_state(SSL *s)
4777	{
4778	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4779
4780	#ifndef OPENSSL_NO_QUIC
4781	if (IS_QUIC(s)) {
4782	ossl_quic_set_connect_state(s);
4783	return;
4784	}
4785	#endif
4786
4787	sc->server = 0;
4788	sc->shutdown = 0;
4789	ossl_statem_clear(sc);
4790	sc->handshake_func = s->method->ssl_connect;
4791	/* Ignore return value. Its a void public API function */
4792	RECORD_LAYER_reset(&sc->rlayer);
4793	}
4794
4795	int ssl_undefined_function(SSL *s)
4796	{
4797	ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4798	return 0;
4799	}
4800
4801	int ssl_undefined_void_function(void)
4802	{
4803	ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4804	return 0;
4805	}
4806
4807	int ssl_undefined_const_function(const SSL *s)
4808	{
4809	return 0;
4810	}
4811
4812	const char *ssl_protocol_to_string(int version)
4813	{
4814	switch (version)
4815	{
4816	case TLS1_3_VERSION:
4817	return "TLSv1.3";
4818
4819	case TLS1_2_VERSION:
4820	return "TLSv1.2";
4821
4822	case TLS1_1_VERSION:
4823	return "TLSv1.1";
4824
4825	case TLS1_VERSION:
4826	return "TLSv1";
4827
4828	case SSL3_VERSION:
4829	return "SSLv3";
4830
4831	case DTLS1_BAD_VER:
4832	return "DTLSv0.9";
4833
4834	case DTLS1_VERSION:
4835	return "DTLSv1";
4836
4837	case DTLS1_2_VERSION:
4838	return "DTLSv1.2";
4839
4840	default:
4841	return "unknown";
4842	}
4843	}
4844
4845	const char SSL_get_version(const SSL s)
4846	{
4847	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4848
4849	#ifndef OPENSSL_NO_QUIC
4850	/* We only support QUICv1 - so if its QUIC its QUICv1 */
4851	if (s->type == SSL_TYPE_QUIC_CONNECTION \|\| s->type == SSL_TYPE_QUIC_XSO)
4852	return "QUICv1";
4853	#endif
4854
4855	if (sc == NULL)
4856	return NULL;
4857
4858	return ssl_protocol_to_string(sc->version);
4859	}
4860
4861	__owur int SSL_get_handshake_rtt(const SSL s, uint64_t rtt)
4862	{
4863	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4864
4865	if (sc == NULL)
4866	return -1;
4867	if (sc->ts_msg_write.t <= 0 \|\| sc->ts_msg_read.t <= 0)
4868	return 0; /* data not (yet) available */
4869	if (sc->ts_msg_read.t < sc->ts_msg_write.t)
4870	return -1;
4871
4872	*rtt = ossl_time2us(ossl_time_subtract(sc->ts_msg_read, sc->ts_msg_write));
4873	return 1;
4874	}
4875
4876	static int dup_ca_names(STACK_OF(X509_NAME) *dst, STACK_OF(X509_NAME) src)
4877	{
4878	STACK_OF(X509_NAME) *sk;
4879	X509_NAME *xn;
4880	int i;
4881
4882	if (src == NULL) {
4883	*dst = NULL;
4884	return 1;
4885	}
4886
4887	if ((sk = sk_X509_NAME_new_null()) == NULL)
4888	return 0;
4889	for (i = 0; i < sk_X509_NAME_num(src); i++) {
4890	xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4891	if (xn == NULL) {
4892	sk_X509_NAME_pop_free(sk, X509_NAME_free);
4893	return 0;
4894	}
4895	if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4896	X509_NAME_free(xn);
4897	sk_X509_NAME_pop_free(sk, X509_NAME_free);
4898	return 0;
4899	}
4900	}
4901	*dst = sk;
4902
4903	return 1;
4904	}
4905
4906	SSL SSL_dup(SSL s)
4907	{
4908	SSL *ret;
4909	int i;
4910	/* TODO(QUIC FUTURE): Add a SSL_METHOD function for duplication */
4911	SSL_CONNECTION *retsc;
4912	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4913
4914	if (sc == NULL)
4915	return NULL;
4916
4917	/* If we're not quiescent, just up_ref! */
4918	if (!SSL_in_init(s) \|\| !SSL_in_before(s)) {
4919	CRYPTO_UP_REF(&s->references, &i);
4920	return s;
4921	}
4922
4923	/*
4924	* Otherwise, copy configuration state, and session if set.
4925	*/
4926	if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4927	return NULL;
4928	if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4929	goto err;
4930
4931	if (sc->session != NULL) {
4932	/*
4933	* Arranges to share the same session via up_ref. This "copies"
4934	* session-id, SSL_METHOD, sid_ctx, and 'cert'
4935	*/
4936	if (!SSL_copy_session_id(ret, s))
4937	goto err;
4938	} else {
4939	/*
4940	* No session has been established yet, so we have to expect that
4941	* s->cert or ret->cert will be changed later -- they should not both
4942	* point to the same object, and thus we can't use
4943	* SSL_copy_session_id.
4944	*/
4945	if (!SSL_set_ssl_method(ret, s->method))
4946	goto err;
4947
4948	if (sc->cert != NULL) {
4949	ssl_cert_free(retsc->cert);
4950	retsc->cert = ssl_cert_dup(sc->cert);
4951	if (retsc->cert == NULL)
4952	goto err;
4953	}
4954
4955	if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4956	(int)sc->sid_ctx_length))
4957	goto err;
4958	}
4959
4960	if (!ssl_dane_dup(retsc, sc))
4961	goto err;
4962	retsc->version = sc->version;
4963	retsc->options = sc->options;
4964	retsc->min_proto_version = sc->min_proto_version;
4965	retsc->max_proto_version = sc->max_proto_version;
4966	retsc->mode = sc->mode;
4967	SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4968	SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4969	retsc->msg_callback = sc->msg_callback;
4970	retsc->msg_callback_arg = sc->msg_callback_arg;
4971	SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4972	SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4973	retsc->generate_session_id = sc->generate_session_id;
4974
4975	SSL_set_info_callback(ret, SSL_get_info_callback(s));
4976
4977	/* copy app data, a little dangerous perhaps */
4978	if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4979	goto err;
4980
4981	retsc->server = sc->server;
4982	if (sc->handshake_func) {
4983	if (sc->server)
4984	SSL_set_accept_state(ret);
4985	else
4986	SSL_set_connect_state(ret);
4987	}
4988	retsc->shutdown = sc->shutdown;
4989	retsc->hit = sc->hit;
4990
4991	retsc->default_passwd_callback = sc->default_passwd_callback;
4992	retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4993
4994	X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4995
4996	/* dup the cipher_list and cipher_list_by_id stacks */
4997	if (sc->cipher_list != NULL) {
4998	if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
4999	goto err;
5000	}
5001	if (sc->cipher_list_by_id != NULL)
5002	if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
5003	== NULL)
5004	goto err;
5005
5006	/* Dup the client_CA list */
5007	if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
5008	\|\| !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
5009	goto err;
5010
5011	return ret;
5012
5013	err:
5014	SSL_free(ret);
5015	return NULL;
5016	}
5017
5018	X509 SSL_get_certificate(const SSL s)
5019	{
5020	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5021
5022	if (sc == NULL)
5023	return NULL;
5024
5025	if (sc->cert != NULL)
5026	return sc->cert->key->x509;
5027	else
5028	return NULL;
5029	}
5030
5031	EVP_PKEY SSL_get_privatekey(const SSL s)
5032	{
5033	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5034
5035	if (sc == NULL)
5036	return NULL;
5037
5038	if (sc->cert != NULL)
5039	return sc->cert->key->privatekey;
5040	else
5041	return NULL;
5042	}
5043
5044	X509 SSL_CTX_get0_certificate(const SSL_CTX ctx)
5045	{
5046	if (ctx->cert != NULL)
5047	return ctx->cert->key->x509;
5048	else
5049	return NULL;
5050	}
5051
5052	EVP_PKEY SSL_CTX_get0_privatekey(const SSL_CTX ctx)
5053	{
5054	if (ctx->cert != NULL)
5055	return ctx->cert->key->privatekey;
5056	else
5057	return NULL;
5058	}
5059
5060	const SSL_CIPHER SSL_get_current_cipher(const SSL s)
5061	{
5062	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5063
5064	if (sc == NULL)
5065	return NULL;
5066
5067	if ((sc->session != NULL) && (sc->session->cipher != NULL))
5068	return sc->session->cipher;
5069	return NULL;
5070	}
5071
5072	const SSL_CIPHER SSL_get_pending_cipher(const SSL s)
5073	{
5074	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5075
5076	if (sc == NULL)
5077	return NULL;
5078
5079	return sc->s3.tmp.new_cipher;
5080	}
5081
5082	const COMP_METHOD SSL_get_current_compression(const SSL s)
5083	{
5084	#ifndef OPENSSL_NO_COMP
5085	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
5086
5087	if (sc == NULL)
5088	return NULL;
5089
5090	return sc->rlayer.wrlmethod->get_compression(sc->rlayer.wrl);
5091	#else
5092	return NULL;
5093	#endif
5094	}
5095
5096	const COMP_METHOD SSL_get_current_expansion(const SSL s)
5097	{
5098	#ifndef OPENSSL_NO_COMP
5099	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
5100
5101	if (sc == NULL)
5102	return NULL;
5103
5104	return sc->rlayer.rrlmethod->get_compression(sc->rlayer.rrl);
5105	#else
5106	return NULL;
5107	#endif
5108	}
5109
5110	int ssl_init_wbio_buffer(SSL_CONNECTION *s)
5111	{
5112	BIO *bbio;
5113
5114	if (s->bbio != NULL) {
5115	/* Already buffered. */
5116	return 1;
5117	}
5118
5119	bbio = BIO_new(BIO_f_buffer());
5120	if (bbio == NULL \|\| BIO_set_read_buffer_size(bbio, 1) <= 0) {
5121	BIO_free(bbio);
5122	ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
5123	return 0;
5124	}
5125	s->bbio = bbio;
5126	s->wbio = BIO_push(bbio, s->wbio);
5127
5128	s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
5129
5130	return 1;
5131	}
5132
5133	int ssl_free_wbio_buffer(SSL_CONNECTION *s)
5134	{
5135	/* callers ensure s is never null */
5136	if (s->bbio == NULL)
5137	return 1;
5138
5139	s->wbio = BIO_pop(s->wbio);
5140	s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
5141
5142	BIO_free(s->bbio);
5143	s->bbio = NULL;
5144
5145	return 1;
5146	}
5147
5148	void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
5149	{
5150	ctx->quiet_shutdown = mode;
5151	}
5152
5153	int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
5154	{
5155	return ctx->quiet_shutdown;
5156	}
5157
5158	void SSL_set_quiet_shutdown(SSL *s, int mode)
5159	{
5160	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
5161
5162	/* Not supported with QUIC */
5163	if (sc == NULL)
5164	return;
5165
5166	sc->quiet_shutdown = mode;
5167	}
5168
5169	int SSL_get_quiet_shutdown(const SSL *s)
5170	{
5171	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
5172
5173	/* Not supported with QUIC */
5174	if (sc == NULL)
5175	return 0;
5176
5177	return sc->quiet_shutdown;
5178	}
5179
5180	void SSL_set_shutdown(SSL *s, int mode)
5181	{
5182	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
5183
5184	/* Not supported with QUIC */
5185	if (sc == NULL)
5186	return;
5187
5188	sc->shutdown = mode;
5189	}
5190
5191	int SSL_get_shutdown(const SSL *s)
5192	{
5193	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
5194
5195	#ifndef OPENSSL_NO_QUIC
5196	/* QUIC: Just indicate whether the connection was shutdown cleanly. */
5197	if (IS_QUIC(s))
5198	return ossl_quic_get_shutdown(s);
5199	#endif
5200
5201	if (sc == NULL)
5202	return 0;
5203
5204	return sc->shutdown;
5205	}
5206
5207	int SSL_version(const SSL *s)
5208	{
5209	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5210
5211	#ifndef OPENSSL_NO_QUIC
5212	/* We only support QUICv1 - so if its QUIC its QUICv1 */
5213	if (s->type == SSL_TYPE_QUIC_CONNECTION \|\| s->type == SSL_TYPE_QUIC_XSO)
5214	return OSSL_QUIC1_VERSION;
5215	#endif
5216	if (sc == NULL)
5217	return 0;
5218
5219	return sc->version;
5220	}
5221
5222	int SSL_client_version(const SSL *s)
5223	{
5224	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5225
5226	#ifndef OPENSSL_NO_QUIC
5227	/* We only support QUICv1 - so if its QUIC its QUICv1 */
5228	if (s->type == SSL_TYPE_QUIC_CONNECTION \|\| s->type == SSL_TYPE_QUIC_XSO)
5229	return OSSL_QUIC1_VERSION;
5230	#endif
5231	if (sc == NULL)
5232	return 0;
5233
5234	return sc->client_version;
5235	}
5236
5237	SSL_CTX SSL_get_SSL_CTX(const SSL ssl)
5238	{
5239	return ssl->ctx;
5240	}
5241
5242	SSL_CTX SSL_set_SSL_CTX(SSL ssl, SSL_CTX *ctx)
5243	{
5244	CERT *new_cert;
5245	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
5246
5247	/* TODO(QUIC FUTURE): Add support for QUIC */
5248	if (sc == NULL)
5249	return NULL;
5250
5251	if (ssl->ctx == ctx)
5252	return ssl->ctx;
5253	if (ctx == NULL)
5254	ctx = sc->session_ctx;
5255	new_cert = ssl_cert_dup(ctx->cert);
5256	if (new_cert == NULL) {
5257	return NULL;
5258	}
5259
5260	if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
5261	ssl_cert_free(new_cert);
5262	return NULL;
5263	}
5264
5265	ssl_cert_free(sc->cert);
5266	sc->cert = new_cert;
5267
5268	/*
5269	* Program invariant: \|sid_ctx\| has fixed size (SSL_MAX_SID_CTX_LENGTH),
5270	* so setter APIs must prevent invalid lengths from entering the system.
5271	*/
5272	if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
5273	return NULL;
5274
5275	/*
5276	* If the session ID context matches that of the parent SSL_CTX,
5277	* inherit it from the new SSL_CTX as well. If however the context does
5278	* not match (i.e., it was set per-ssl with SSL_set_session_id_context),
5279	* leave it unchanged.
5280	*/
5281	if ((ssl->ctx != NULL) &&
5282	(sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
5283	(memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
5284	sc->sid_ctx_length = ctx->sid_ctx_length;
5285	memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
5286	}
5287
5288	SSL_CTX_up_ref(ctx);
5289	SSL_CTX_free(ssl->ctx); /* decrement reference count */
5290	ssl->ctx = ctx;
5291
5292	return ssl->ctx;
5293	}
5294
5295	int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
5296	{
5297	return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
5298	ctx->propq);
5299	}
5300
5301	int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
5302	{
5303	X509_LOOKUP *lookup;
5304
5305	lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
5306	if (lookup == NULL)
5307	return 0;
5308
5309	/* We ignore errors, in case the directory doesn't exist */
5310	ERR_set_mark();
5311
5312	X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
5313
5314	ERR_pop_to_mark();
5315
5316	return 1;
5317	}
5318
5319	int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
5320	{
5321	X509_LOOKUP *lookup;
5322
5323	lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
5324	if (lookup == NULL)
5325	return 0;
5326
5327	/* We ignore errors, in case the file doesn't exist */
5328	ERR_set_mark();
5329
5330	X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
5331	ctx->propq);
5332
5333	ERR_pop_to_mark();
5334
5335	return 1;
5336	}
5337
5338	int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
5339	{
5340	X509_LOOKUP *lookup;
5341
5342	lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
5343	if (lookup == NULL)
5344	return 0;
5345
5346	/* We ignore errors, in case the directory doesn't exist */
5347	ERR_set_mark();
5348
5349	X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
5350
5351	ERR_pop_to_mark();
5352
5353	return 1;
5354	}
5355
5356	int SSL_CTX_load_verify_file(SSL_CTX ctx, const char CAfile)
5357	{
5358	return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5359	ctx->propq);
5360	}
5361
5362	int SSL_CTX_load_verify_dir(SSL_CTX ctx, const char CApath)
5363	{
5364	return X509_STORE_load_path(ctx->cert_store, CApath);
5365	}
5366
5367	int SSL_CTX_load_verify_store(SSL_CTX ctx, const char CAstore)
5368	{
5369	return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5370	ctx->propq);
5371	}
5372
5373	int SSL_CTX_load_verify_locations(SSL_CTX ctx, const char CAfile,
5374	const char *CApath)
5375	{
5376	if (CAfile == NULL && CApath == NULL)
5377	return 0;
5378	if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5379	return 0;
5380	if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5381	return 0;
5382	return 1;
5383	}
5384
5385	void SSL_set_info_callback(SSL *ssl,
5386	void (cb) (const SSL ssl, int type, int val))
5387	{
5388	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5389
5390	if (sc == NULL)
5391	return;
5392
5393	sc->info_callback = cb;
5394	}
5395
5396	/*
5397	* One compiler (Diab DCC) doesn't like argument names in returned function
5398	* pointer.
5399	*/
5400	void (SSL_get_info_callback(const SSL ssl)) (const SSL * /* ssl */ ,
5401	int /* type */ ,
5402	int /* val */ ) {
5403	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5404
5405	if (sc == NULL)
5406	return NULL;
5407
5408	return sc->info_callback;
5409	}
5410
5411	void SSL_set_verify_result(SSL *ssl, long arg)
5412	{
5413	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5414
5415	if (sc == NULL)
5416	return;
5417
5418	sc->verify_result = arg;
5419	}
5420
5421	long SSL_get_verify_result(const SSL *ssl)
5422	{
5423	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5424
5425	if (sc == NULL)
5426	return 0;
5427
5428	return sc->verify_result;
5429	}
5430
5431	size_t SSL_get_client_random(const SSL ssl, unsigned char out, size_t outlen)
5432	{
5433	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5434
5435	if (sc == NULL)
5436	return 0;
5437
5438	if (outlen == 0)
5439	return sizeof(sc->s3.client_random);
5440	if (outlen > sizeof(sc->s3.client_random))
5441	outlen = sizeof(sc->s3.client_random);
5442	memcpy(out, sc->s3.client_random, outlen);
5443	return outlen;
5444	}
5445
5446	size_t SSL_get_server_random(const SSL ssl, unsigned char out, size_t outlen)
5447	{
5448	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5449
5450	if (sc == NULL)
5451	return 0;
5452
5453	if (outlen == 0)
5454	return sizeof(sc->s3.server_random);
5455	if (outlen > sizeof(sc->s3.server_random))
5456	outlen = sizeof(sc->s3.server_random);
5457	memcpy(out, sc->s3.server_random, outlen);
5458	return outlen;
5459	}
5460
5461	size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5462	unsigned char *out, size_t outlen)
5463	{
5464	if (outlen == 0)
5465	return session->master_key_length;
5466	if (outlen > session->master_key_length)
5467	outlen = session->master_key_length;
5468	memcpy(out, session->master_key, outlen);
5469	return outlen;
5470	}
5471
5472	int SSL_SESSION_set1_master_key(SSL_SESSION sess, const unsigned char in,
5473	size_t len)
5474	{
5475	if (len > sizeof(sess->master_key))
5476	return 0;
5477
5478	memcpy(sess->master_key, in, len);
5479	sess->master_key_length = len;
5480	return 1;
5481	}
5482
5483
5484	int SSL_set_ex_data(SSL s, int idx, void arg)
5485	{
5486	return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5487	}
5488
5489	void SSL_get_ex_data(const SSL s, int idx)
5490	{
5491	return CRYPTO_get_ex_data(&s->ex_data, idx);
5492	}
5493
5494	int SSL_CTX_set_ex_data(SSL_CTX s, int idx, void arg)
5495	{
5496	return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5497	}
5498
5499	void SSL_CTX_get_ex_data(const SSL_CTX s, int idx)
5500	{
5501	return CRYPTO_get_ex_data(&s->ex_data, idx);
5502	}
5503
5504	X509_STORE SSL_CTX_get_cert_store(const SSL_CTX ctx)
5505	{
5506	return ctx->cert_store;
5507	}
5508
5509	void SSL_CTX_set_cert_store(SSL_CTX ctx, X509_STORE store)
5510	{
5511	X509_STORE_free(ctx->cert_store);
5512	ctx->cert_store = store;
5513	}
5514
5515	void SSL_CTX_set1_cert_store(SSL_CTX ctx, X509_STORE store)
5516	{
5517	if (store != NULL)
5518	X509_STORE_up_ref(store);
5519	SSL_CTX_set_cert_store(ctx, store);
5520	}
5521
5522	int SSL_want(const SSL *s)
5523	{
5524	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5525
5526	#ifndef OPENSSL_NO_QUIC
5527	if (IS_QUIC(s))
5528	return ossl_quic_want(s);
5529	#endif
5530
5531	if (sc == NULL)
5532	return SSL_NOTHING;
5533
5534	return sc->rwstate;
5535	}
5536
5537	#ifndef OPENSSL_NO_PSK
5538	int SSL_CTX_use_psk_identity_hint(SSL_CTX ctx, const char identity_hint)
5539	{
5540	if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5541	ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5542	return 0;
5543	}
5544	OPENSSL_free(ctx->cert->psk_identity_hint);
5545	if (identity_hint != NULL) {
5546	ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5547	if (ctx->cert->psk_identity_hint == NULL)
5548	return 0;
5549	} else
5550	ctx->cert->psk_identity_hint = NULL;
5551	return 1;
5552	}
5553
5554	int SSL_use_psk_identity_hint(SSL s, const char identity_hint)
5555	{
5556	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5557
5558	if (sc == NULL)
5559	return 0;
5560
5561	if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5562	ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5563	return 0;
5564	}
5565	OPENSSL_free(sc->cert->psk_identity_hint);
5566	if (identity_hint != NULL) {
5567	sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5568	if (sc->cert->psk_identity_hint == NULL)
5569	return 0;
5570	} else
5571	sc->cert->psk_identity_hint = NULL;
5572	return 1;
5573	}
5574
5575	const char SSL_get_psk_identity_hint(const SSL s)
5576	{
5577	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5578
5579	if (sc == NULL \|\| sc->session == NULL)
5580	return NULL;
5581
5582	return sc->session->psk_identity_hint;
5583	}
5584
5585	const char SSL_get_psk_identity(const SSL s)
5586	{
5587	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5588
5589	if (sc == NULL \|\| sc->session == NULL)
5590	return NULL;
5591
5592	return sc->session->psk_identity;
5593	}
5594
5595	void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5596	{
5597	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5598
5599	if (sc == NULL)
5600	return;
5601
5602	sc->psk_client_callback = cb;
5603	}
5604
5605	void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5606	{
5607	ctx->psk_client_callback = cb;
5608	}
5609
5610	void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5611	{
5612	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5613
5614	if (sc == NULL)
5615	return;
5616
5617	sc->psk_server_callback = cb;
5618	}
5619
5620	void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5621	{
5622	ctx->psk_server_callback = cb;
5623	}
5624	#endif
5625
5626	void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5627	{
5628	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5629
5630	if (sc == NULL)
5631	return;
5632
5633	sc->psk_find_session_cb = cb;
5634	}
5635
5636	void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5637	SSL_psk_find_session_cb_func cb)
5638	{
5639	ctx->psk_find_session_cb = cb;
5640	}
5641
5642	void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5643	{
5644	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5645
5646	if (sc == NULL)
5647	return;
5648
5649	sc->psk_use_session_cb = cb;
5650	}
5651
5652	void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5653	SSL_psk_use_session_cb_func cb)
5654	{
5655	ctx->psk_use_session_cb = cb;
5656	}
5657
5658	void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5659	void (*cb) (int write_p, int version,
5660	int content_type, const void *buf,
5661	size_t len, SSL ssl, void arg))
5662	{
5663	SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5664	}
5665
5666	void SSL_set_msg_callback(SSL *ssl,
5667	void (*cb) (int write_p, int version,
5668	int content_type, const void *buf,
5669	size_t len, SSL ssl, void arg))
5670	{
5671	SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5672	}
5673
5674	void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5675	int (cb) (SSL ssl,
5676	int
5677	is_forward_secure))
5678	{
5679	SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5680	(void (*)(void))cb);
5681	}
5682
5683	void SSL_set_not_resumable_session_callback(SSL *ssl,
5684	int (cb) (SSL ssl,
5685	int is_forward_secure))
5686	{
5687	SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5688	(void (*)(void))cb);
5689	}
5690
5691	void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5692	size_t (cb) (SSL ssl, int type,
5693	size_t len, void *arg))
5694	{
5695	ctx->record_padding_cb = cb;
5696	}
5697
5698	void SSL_CTX_set_record_padding_callback_arg(SSL_CTX ctx, void arg)
5699	{
5700	ctx->record_padding_arg = arg;
5701	}
5702
5703	void SSL_CTX_get_record_padding_callback_arg(const SSL_CTX ctx)
5704	{
5705	return ctx->record_padding_arg;
5706	}
5707
5708	int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5709	{
5710	if (IS_QUIC_CTX(ctx) && block_size > 1)
5711	return 0;
5712
5713	/* block size of 0 or 1 is basically no padding */
5714	if (block_size == 1)
5715	ctx->block_padding = 0;
5716	else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5717	ctx->block_padding = block_size;
5718	else
5719	return 0;
5720	return 1;
5721	}
5722
5723	int SSL_set_record_padding_callback(SSL *ssl,
5724	size_t (cb) (SSL ssl, int type,
5725	size_t len, void *arg))
5726	{
5727	BIO *b;
5728	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
5729
5730	if (sc == NULL)
5731	return 0;
5732
5733	b = SSL_get_wbio(ssl);
5734	if (b == NULL \|\| !BIO_get_ktls_send(b)) {
5735	sc->rlayer.record_padding_cb = cb;
5736	return 1;
5737	}
5738	return 0;
5739	}
5740
5741	void SSL_set_record_padding_callback_arg(SSL ssl, void arg)
5742	{
5743	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5744
5745	if (sc == NULL)
5746	return;
5747
5748	sc->rlayer.record_padding_arg = arg;
5749	}
5750
5751	void SSL_get_record_padding_callback_arg(const SSL ssl)
5752	{
5753	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5754
5755	if (sc == NULL)
5756	return NULL;
5757
5758	return sc->rlayer.record_padding_arg;
5759	}
5760
5761	int SSL_set_block_padding(SSL *ssl, size_t block_size)
5762	{
5763	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5764
5765	if (sc == NULL \|\| (IS_QUIC(ssl) && block_size > 1))
5766	return 0;
5767
5768	/* block size of 0 or 1 is basically no padding */
5769	if (block_size == 1)
5770	sc->rlayer.block_padding = 0;
5771	else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5772	sc->rlayer.block_padding = block_size;
5773	else
5774	return 0;
5775	return 1;
5776	}
5777
5778	int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5779	{
5780	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5781
5782	if (sc == NULL)
5783	return 0;
5784
5785	sc->num_tickets = num_tickets;
5786
5787	return 1;
5788	}
5789
5790	size_t SSL_get_num_tickets(const SSL *s)
5791	{
5792	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5793
5794	if (sc == NULL)
5795	return 0;
5796
5797	return sc->num_tickets;
5798	}
5799
5800	int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5801	{
5802	ctx->num_tickets = num_tickets;
5803
5804	return 1;
5805	}
5806
5807	size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5808	{
5809	return ctx->num_tickets;
5810	}
5811
5812	/* Retrieve handshake hashes */
5813	int ssl_handshake_hash(SSL_CONNECTION *s,
5814	unsigned char *out, size_t outlen,
5815	size_t *hashlen)
5816	{
5817	EVP_MD_CTX *ctx = NULL;
5818	EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5819	int hashleni = EVP_MD_CTX_get_size(hdgst);
5820	int ret = 0;
5821
5822	if (hashleni < 0 \|\| (size_t)hashleni > outlen) {
5823	SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5824	goto err;
5825	}
5826
5827	ctx = EVP_MD_CTX_new();
5828	if (ctx == NULL) {
5829	SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5830	goto err;
5831	}
5832
5833	if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5834	\|\| EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5835	SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5836	goto err;
5837	}
5838
5839	*hashlen = hashleni;
5840
5841	ret = 1;
5842	err:
5843	EVP_MD_CTX_free(ctx);
5844	return ret;
5845	}
5846
5847	int SSL_session_reused(const SSL *s)
5848	{
5849	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5850
5851	if (sc == NULL)
5852	return 0;
5853
5854	return sc->hit;
5855	}
5856
5857	int SSL_is_server(const SSL *s)
5858	{
5859	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5860
5861	if (sc == NULL)
5862	return 0;
5863
5864	return sc->server;
5865	}
5866
5867	#ifndef OPENSSL_NO_DEPRECATED_1_1_0
5868	void SSL_set_debug(SSL *s, int debug)
5869	{
5870	/* Old function was do-nothing anyway... */
5871	(void)s;
5872	(void)debug;
5873	}
5874	#endif
5875
5876	void SSL_set_security_level(SSL *s, int level)
5877	{
5878	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5879
5880	if (sc == NULL)
5881	return;
5882
5883	sc->cert->sec_level = level;
5884	}
5885
5886	int SSL_get_security_level(const SSL *s)
5887	{
5888	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5889
5890	if (sc == NULL)
5891	return 0;
5892
5893	return sc->cert->sec_level;
5894	}
5895
5896	void SSL_set_security_callback(SSL *s,
5897	int (cb) (const SSL s, const SSL_CTX *ctx,
5898	int op, int bits, int nid,
5899	void other, void ex))
5900	{
5901	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5902
5903	if (sc == NULL)
5904	return;
5905
5906	sc->cert->sec_cb = cb;
5907	}
5908
5909	int (SSL_get_security_callback(const SSL s)) (const SSL *s,
5910	const SSL_CTX *ctx, int op,
5911	int bits, int nid, void *other,
5912	void *ex) {
5913	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5914
5915	if (sc == NULL)
5916	return NULL;
5917
5918	return sc->cert->sec_cb;
5919	}
5920
5921	void SSL_set0_security_ex_data(SSL s, void ex)
5922	{
5923	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5924
5925	if (sc == NULL)
5926	return;
5927
5928	sc->cert->sec_ex = ex;
5929	}
5930
5931	void SSL_get0_security_ex_data(const SSL s)
5932	{
5933	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5934
5935	if (sc == NULL)
5936	return NULL;
5937
5938	return sc->cert->sec_ex;
5939	}
5940
5941	void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5942	{
5943	ctx->cert->sec_level = level;
5944	}
5945
5946	int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5947	{
5948	return ctx->cert->sec_level;
5949	}
5950
5951	void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5952	int (cb) (const SSL s, const SSL_CTX *ctx,
5953	int op, int bits, int nid,
5954	void other, void ex))
5955	{
5956	ctx->cert->sec_cb = cb;
5957	}
5958
5959	int (SSL_CTX_get_security_callback(const SSL_CTX ctx)) (const SSL *s,
5960	const SSL_CTX *ctx,
5961	int op, int bits,
5962	int nid,
5963	void *other,
5964	void *ex) {
5965	return ctx->cert->sec_cb;
5966	}
5967
5968	void SSL_CTX_set0_security_ex_data(SSL_CTX ctx, void ex)
5969	{
5970	ctx->cert->sec_ex = ex;
5971	}
5972
5973	void SSL_CTX_get0_security_ex_data(const SSL_CTX ctx)
5974	{
5975	return ctx->cert->sec_ex;
5976	}
5977
5978	uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
5979	{
5980	return ctx->options;
5981	}
5982
5983	uint64_t SSL_get_options(const SSL *s)
5984	{
5985	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5986
5987	#ifndef OPENSSL_NO_QUIC
5988	if (IS_QUIC(s))
5989	return ossl_quic_get_options(s);
5990	#endif
5991
5992	if (sc == NULL)
5993	return 0;
5994
5995	return sc->options;
5996	}
5997
5998	uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
5999	{
6000	return ctx->options \|= op;
6001	}
6002
6003	uint64_t SSL_set_options(SSL *s, uint64_t op)
6004	{
6005	SSL_CONNECTION *sc;
6006	OSSL_PARAM options[2], *opts = options;
6007
6008	#ifndef OPENSSL_NO_QUIC
6009	if (IS_QUIC(s))
6010	return ossl_quic_set_options(s, op);
6011	#endif
6012
6013	sc = SSL_CONNECTION_FROM_SSL(s);
6014	if (sc == NULL)
6015	return 0;
6016
6017	sc->options \|= op;
6018
6019	*opts++ = OSSL_PARAM_construct_uint64(OSSL_LIBSSL_RECORD_LAYER_PARAM_OPTIONS,
6020	&sc->options);
6021	*opts = OSSL_PARAM_construct_end();
6022
6023	/* Ignore return value */
6024	sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
6025	sc->rlayer.wrlmethod->set_options(sc->rlayer.wrl, options);
6026
6027	return sc->options;
6028	}
6029
6030	uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
6031	{
6032	return ctx->options &= ~op;
6033	}
6034
6035	uint64_t SSL_clear_options(SSL *s, uint64_t op)
6036	{
6037	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6038	OSSL_PARAM options[2], *opts = options;
6039
6040	#ifndef OPENSSL_NO_QUIC
6041	if (IS_QUIC(s))
6042	return ossl_quic_clear_options(s, op);
6043	#endif
6044
6045	if (sc == NULL)
6046	return 0;
6047
6048	sc->options &= ~op;
6049
6050	*opts++ = OSSL_PARAM_construct_uint64(OSSL_LIBSSL_RECORD_LAYER_PARAM_OPTIONS,
6051	&sc->options);
6052	*opts = OSSL_PARAM_construct_end();
6053
6054	/* Ignore return value */
6055	sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
6056	sc->rlayer.wrlmethod->set_options(sc->rlayer.wrl, options);
6057
6058	return sc->options;
6059	}
6060
6061	STACK_OF(X509) SSL_get0_verified_chain(const SSL s)
6062	{
6063	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6064
6065	if (sc == NULL)
6066	return NULL;
6067
6068	return sc->verified_chain;
6069	}
6070
6071	IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
6072
6073	#ifndef OPENSSL_NO_CT
6074
6075	/*
6076	* Moves SCTs from the \|src\| stack to the \|dst\| stack.
6077	* The source of each SCT will be set to \|origin\|.
6078	* If \|dst\| points to a NULL pointer, a new stack will be created and owned by
6079	* the caller.
6080	* Returns the number of SCTs moved, or a negative integer if an error occurs.
6081	* The \|dst\| stack is created and possibly partially populated even in case
6082	* of error, likewise the \|src\| stack may be left in an intermediate state.
6083	*/
6084	static int ct_move_scts(STACK_OF(SCT) *dst, STACK_OF(SCT) src,
6085	sct_source_t origin)
6086	{
6087	int scts_moved = 0;
6088	SCT *sct = NULL;
6089
6090	if (*dst == NULL) {
6091	*dst = sk_SCT_new_null();
6092	if (*dst == NULL) {
6093	ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6094	goto err;
6095	}
6096	}
6097
6098	while ((sct = sk_SCT_pop(src)) != NULL) {
6099	if (SCT_set_source(sct, origin) != 1)
6100	goto err;
6101
6102	if (!sk_SCT_push(*dst, sct))
6103	goto err;
6104	scts_moved += 1;
6105	}
6106
6107	return scts_moved;
6108	err:
6109	SCT_free(sct);
6110	return -1;
6111	}
6112
6113	/*
6114	* Look for data collected during ServerHello and parse if found.
6115	* Returns the number of SCTs extracted.
6116	*/
6117	static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
6118	{
6119	int scts_extracted = 0;
6120
6121	if (s->ext.scts != NULL) {
6122	const unsigned char *p = s->ext.scts;
6123	STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
6124
6125	scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
6126
6127	SCT_LIST_free(scts);
6128	}
6129
6130	return scts_extracted;
6131	}
6132
6133	/*
6134	* Checks for an OCSP response and then attempts to extract any SCTs found if it
6135	* contains an SCT X509 extension. They will be stored in \|s->scts\|.
6136	* Returns:
6137	* - The number of SCTs extracted, assuming an OCSP response exists.
6138	* - 0 if no OCSP response exists or it contains no SCTs.
6139	* - A negative integer if an error occurs.
6140	*/
6141	static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
6142	{
6143	# ifndef OPENSSL_NO_OCSP
6144	int scts_extracted = 0;
6145	const unsigned char *p;
6146	OCSP_BASICRESP *br = NULL;
6147	OCSP_RESPONSE *rsp = NULL;
6148	STACK_OF(SCT) *scts = NULL;
6149	int i;
6150
6151	if (s->ext.ocsp.resp == NULL \|\| s->ext.ocsp.resp_len == 0)
6152	goto err;
6153
6154	p = s->ext.ocsp.resp;
6155	rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
6156	if (rsp == NULL)
6157	goto err;
6158
6159	br = OCSP_response_get1_basic(rsp);
6160	if (br == NULL)
6161	goto err;
6162
6163	for (i = 0; i < OCSP_resp_count(br); ++i) {
6164	OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
6165
6166	if (single == NULL)
6167	continue;
6168
6169	scts =
6170	OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
6171	scts_extracted =
6172	ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
6173	if (scts_extracted < 0)
6174	goto err;
6175	}
6176	err:
6177	SCT_LIST_free(scts);
6178	OCSP_BASICRESP_free(br);
6179	OCSP_RESPONSE_free(rsp);
6180	return scts_extracted;
6181	# else
6182	/* Behave as if no OCSP response exists */
6183	return 0;
6184	# endif
6185	}
6186
6187	/*
6188	* Attempts to extract SCTs from the peer certificate.
6189	* Return the number of SCTs extracted, or a negative integer if an error
6190	* occurs.
6191	*/
6192	static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
6193	{
6194	int scts_extracted = 0;
6195	X509 *cert = s->session != NULL ? s->session->peer : NULL;
6196
6197	if (cert != NULL) {
6198	STACK_OF(SCT) *scts =
6199	X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
6200
6201	scts_extracted =
6202	ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
6203
6204	SCT_LIST_free(scts);
6205	}
6206
6207	return scts_extracted;
6208	}
6209
6210	/*
6211	* Attempts to find all received SCTs by checking TLS extensions, the OCSP
6212	* response (if it exists) and X509v3 extensions in the certificate.
6213	* Returns NULL if an error occurs.
6214	*/
6215	const STACK_OF(SCT) SSL_get0_peer_scts(SSL s)
6216	{
6217	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6218
6219	if (sc == NULL)
6220	return NULL;
6221
6222	if (!sc->scts_parsed) {
6223	if (ct_extract_tls_extension_scts(sc) < 0 \|\|
6224	ct_extract_ocsp_response_scts(sc) < 0 \|\|
6225	ct_extract_x509v3_extension_scts(sc) < 0)
6226	goto err;
6227
6228	sc->scts_parsed = 1;
6229	}
6230	return sc->scts;
6231	err:
6232	return NULL;
6233	}
6234
6235	static int ct_permissive(const CT_POLICY_EVAL_CTX *ctx,
6236	const STACK_OF(SCT) scts, void unused_arg)
6237	{
6238	return 1;
6239	}
6240
6241	static int ct_strict(const CT_POLICY_EVAL_CTX *ctx,
6242	const STACK_OF(SCT) scts, void unused_arg)
6243	{
6244	int count = scts != NULL ? sk_SCT_num(scts) : 0;
6245	int i;
6246
6247	for (i = 0; i < count; ++i) {
6248	SCT *sct = sk_SCT_value(scts, i);
6249	int status = SCT_get_validation_status(sct);
6250
6251	if (status == SCT_VALIDATION_STATUS_VALID)
6252	return 1;
6253	}
6254	ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
6255	return 0;
6256	}
6257
6258	int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
6259	void *arg)
6260	{
6261	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6262
6263	if (sc == NULL)
6264	return 0;
6265
6266	/*
6267	* Since code exists that uses the custom extension handler for CT, look
6268	* for this and throw an error if they have already registered to use CT.
6269	*/
6270	if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
6271	TLSEXT_TYPE_signed_certificate_timestamp))
6272	{
6273	ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
6274	return 0;
6275	}
6276
6277	if (callback != NULL) {
6278	/*
6279	* If we are validating CT, then we MUST accept SCTs served via OCSP
6280	*/
6281	if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
6282	return 0;
6283	}
6284
6285	sc->ct_validation_callback = callback;
6286	sc->ct_validation_callback_arg = arg;
6287
6288	return 1;
6289	}
6290
6291	int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
6292	ssl_ct_validation_cb callback, void *arg)
6293	{
6294	/*
6295	* Since code exists that uses the custom extension handler for CT, look for
6296	* this and throw an error if they have already registered to use CT.
6297	*/
6298	if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
6299	TLSEXT_TYPE_signed_certificate_timestamp))
6300	{
6301	ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
6302	return 0;
6303	}
6304
6305	ctx->ct_validation_callback = callback;
6306	ctx->ct_validation_callback_arg = arg;
6307	return 1;
6308	}
6309
6310	int SSL_ct_is_enabled(const SSL *s)
6311	{
6312	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6313
6314	if (sc == NULL)
6315	return 0;
6316
6317	return sc->ct_validation_callback != NULL;
6318	}
6319
6320	int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
6321	{
6322	return ctx->ct_validation_callback != NULL;
6323	}
6324
6325	int ssl_validate_ct(SSL_CONNECTION *s)
6326	{
6327	int ret = 0;
6328	X509 *cert = s->session != NULL ? s->session->peer : NULL;
6329	X509 *issuer;
6330	SSL_DANE *dane = &s->dane;
6331	CT_POLICY_EVAL_CTX *ctx = NULL;
6332	const STACK_OF(SCT) *scts;
6333
6334	/*
6335	* If no callback is set, the peer is anonymous, or its chain is invalid,
6336	* skip SCT validation - just return success. Applications that continue
6337	* handshakes without certificates, with unverified chains, or pinned leaf
6338	* certificates are outside the scope of the WebPKI and CT.
6339	*
6340	* The above exclusions notwithstanding the vast majority of peers will
6341	* have rather ordinary certificate chains validated by typical
6342	* applications that perform certificate verification and therefore will
6343	* process SCTs when enabled.
6344	*/
6345	if (s->ct_validation_callback == NULL \|\| cert == NULL \|\|
6346	s->verify_result != X509_V_OK \|\|
6347	s->verified_chain == NULL \|\| sk_X509_num(s->verified_chain) <= 1)
6348	return 1;
6349
6350	/*
6351	* CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
6352	* trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
6353	*/
6354	if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
6355	switch (dane->mtlsa->usage) {
6356	case DANETLS_USAGE_DANE_TA:
6357	case DANETLS_USAGE_DANE_EE:
6358	return 1;
6359	}
6360	}
6361
6362	ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
6363	SSL_CONNECTION_GET_CTX(s)->propq);
6364	if (ctx == NULL) {
6365	SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CT_LIB);
6366	goto end;
6367	}
6368
6369	issuer = sk_X509_value(s->verified_chain, 1);
6370	CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
6371	CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
6372	CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
6373	SSL_CONNECTION_GET_CTX(s)->ctlog_store);
6374	CT_POLICY_EVAL_CTX_set_time(
6375	ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
6376
6377	scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
6378
6379	/*
6380	* This function returns success (> 0) only when all the SCTs are valid, 0
6381	* when some are invalid, and < 0 on various internal errors (out of
6382	* memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6383	* reason to abort the handshake, that decision is up to the callback.
6384	* Therefore, we error out only in the unexpected case that the return
6385	* value is negative.
6386	*
6387	* XXX: One might well argue that the return value of this function is an
6388	* unfortunate design choice. Its job is only to determine the validation
6389	* status of each of the provided SCTs. So long as it correctly separates
6390	* the wheat from the chaff it should return success. Failure in this case
6391	* ought to correspond to an inability to carry out its duties.
6392	*/
6393	if (SCT_LIST_validate(scts, ctx) < 0) {
6394	SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6395	goto end;
6396	}
6397
6398	ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6399	if (ret < 0)
6400	ret = 0; /* This function returns 0 on failure */
6401	if (!ret)
6402	SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6403
6404	end:
6405	CT_POLICY_EVAL_CTX_free(ctx);
6406	/*
6407	* With SSL_VERIFY_NONE the session may be cached and re-used despite a
6408	* failure return code here. Also the application may wish the complete
6409	* the handshake, and then disconnect cleanly at a higher layer, after
6410	* checking the verification status of the completed connection.
6411	*
6412	* We therefore force a certificate verification failure which will be
6413	* visible via SSL_get_verify_result() and cached as part of any resumed
6414	* session.
6415	*
6416	* Note: the permissive callback is for information gathering only, always
6417	* returns success, and does not affect verification status. Only the
6418	* strict callback or a custom application-specified callback can trigger
6419	* connection failure or record a verification error.
6420	*/
6421	if (ret <= 0)
6422	s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6423	return ret;
6424	}
6425
6426	int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6427	{
6428	switch (validation_mode) {
6429	default:
6430	ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6431	return 0;
6432	case SSL_CT_VALIDATION_PERMISSIVE:
6433	return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6434	case SSL_CT_VALIDATION_STRICT:
6435	return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6436	}
6437	}
6438
6439	int SSL_enable_ct(SSL *s, int validation_mode)
6440	{
6441	switch (validation_mode) {
6442	default:
6443	ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6444	return 0;
6445	case SSL_CT_VALIDATION_PERMISSIVE:
6446	return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6447	case SSL_CT_VALIDATION_STRICT:
6448	return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6449	}
6450	}
6451
6452	int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6453	{
6454	return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6455	}
6456
6457	int SSL_CTX_set_ctlog_list_file(SSL_CTX ctx, const char path)
6458	{
6459	return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6460	}
6461
6462	void SSL_CTX_set0_ctlog_store(SSL_CTX ctx, CTLOG_STORE logs)
6463	{
6464	CTLOG_STORE_free(ctx->ctlog_store);
6465	ctx->ctlog_store = logs;
6466	}
6467
6468	const CTLOG_STORE SSL_CTX_get0_ctlog_store(const SSL_CTX ctx)
6469	{
6470	return ctx->ctlog_store;
6471	}
6472
6473	#endif /* OPENSSL_NO_CT */
6474
6475	void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6476	void *arg)
6477	{
6478	c->client_hello_cb = cb;
6479	c->client_hello_cb_arg = arg;
6480	}
6481
6482	int SSL_client_hello_isv2(SSL *s)
6483	{
6484	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6485
6486	if (sc == NULL)
6487	return 0;
6488
6489	if (sc->clienthello == NULL)
6490	return 0;
6491	return sc->clienthello->isv2;
6492	}
6493
6494	unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6495	{
6496	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6497
6498	if (sc == NULL)
6499	return 0;
6500
6501	if (sc->clienthello == NULL)
6502	return 0;
6503	return sc->clienthello->legacy_version;
6504	}
6505
6506	size_t SSL_client_hello_get0_random(SSL s, const unsigned char *out)
6507	{
6508	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6509
6510	if (sc == NULL)
6511	return 0;
6512
6513	if (sc->clienthello == NULL)
6514	return 0;
6515	if (out != NULL)
6516	*out = sc->clienthello->random;
6517	return SSL3_RANDOM_SIZE;
6518	}
6519
6520	size_t SSL_client_hello_get0_session_id(SSL s, const unsigned char *out)
6521	{
6522	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6523
6524	if (sc == NULL)
6525	return 0;
6526
6527	if (sc->clienthello == NULL)
6528	return 0;
6529	if (out != NULL)
6530	*out = sc->clienthello->session_id;
6531	return sc->clienthello->session_id_len;
6532	}
6533
6534	size_t SSL_client_hello_get0_ciphers(SSL s, const unsigned char *out)
6535	{
6536	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6537
6538	if (sc == NULL)
6539	return 0;
6540
6541	if (sc->clienthello == NULL)
6542	return 0;
6543	if (out != NULL)
6544	*out = PACKET_data(&sc->clienthello->ciphersuites);
6545	return PACKET_remaining(&sc->clienthello->ciphersuites);
6546	}
6547
6548	size_t SSL_client_hello_get0_compression_methods(SSL s, const unsigned char *out)
6549	{
6550	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6551
6552	if (sc == NULL)
6553	return 0;
6554
6555	if (sc->clienthello == NULL)
6556	return 0;
6557	if (out != NULL)
6558	*out = sc->clienthello->compressions;
6559	return sc->clienthello->compressions_len;
6560	}
6561
6562	int SSL_client_hello_get1_extensions_present(SSL s, int out, size_t outlen)
6563	{
6564	RAW_EXTENSION *ext;
6565	int *present;
6566	size_t num = 0, i;
6567	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6568
6569	if (sc == NULL)
6570	return 0;
6571
6572	if (sc->clienthello == NULL \|\| out == NULL \|\| outlen == NULL)
6573	return 0;
6574	for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6575	ext = sc->clienthello->pre_proc_exts + i;
6576	if (ext->present)
6577	num++;
6578	}
6579	if (num == 0) {
6580	*out = NULL;
6581	*outlen = 0;
6582	return 1;
6583	}
6584	if ((present = OPENSSL_malloc(sizeof(present) num)) == NULL)
6585	return 0;
6586	for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6587	ext = sc->clienthello->pre_proc_exts + i;
6588	if (ext->present) {
6589	if (ext->received_order >= num)
6590	goto err;
6591	present[ext->received_order] = ext->type;
6592	}
6593	}
6594	*out = present;
6595	*outlen = num;
6596	return 1;
6597	err:
6598	OPENSSL_free(present);
6599	return 0;
6600	}
6601
6602	int SSL_client_hello_get_extension_order(SSL s, uint16_t exts, size_t *num_exts)
6603	{
6604	RAW_EXTENSION *ext;
6605	size_t num = 0, i;
6606	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6607
6608	if (sc == NULL)
6609	return 0;
6610
6611	if (sc->clienthello == NULL \|\| num_exts == NULL)
6612	return 0;
6613	for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6614	ext = sc->clienthello->pre_proc_exts + i;
6615	if (ext->present)
6616	num++;
6617	}
6618	if (num == 0) {
6619	*num_exts = 0;
6620	return 1;
6621	}
6622	if (exts == NULL) {
6623	*num_exts = num;
6624	return 1;
6625	}
6626	if (*num_exts < num)
6627	return 0;
6628	for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6629	ext = sc->clienthello->pre_proc_exts + i;
6630	if (ext->present) {
6631	if (ext->received_order >= num)
6632	return 0;
6633	exts[ext->received_order] = ext->type;
6634	}
6635	}
6636	*num_exts = num;
6637	return 1;
6638	}
6639
6640	int SSL_client_hello_get0_ext(SSL s, unsigned int type, const unsigned char *out,
6641	size_t *outlen)
6642	{
6643	size_t i;
6644	RAW_EXTENSION *r;
6645	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6646
6647	if (sc == NULL)
6648	return 0;
6649
6650	if (sc->clienthello == NULL)
6651	return 0;
6652	for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6653	r = sc->clienthello->pre_proc_exts + i;
6654	if (r->present && r->type == type) {
6655	if (out != NULL)
6656	*out = PACKET_data(&r->data);
6657	if (outlen != NULL)
6658	*outlen = PACKET_remaining(&r->data);
6659	return 1;
6660	}
6661	}
6662	return 0;
6663	}
6664
6665	int SSL_free_buffers(SSL *ssl)
6666	{
6667	RECORD_LAYER *rl;
6668	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
6669
6670	if (sc == NULL)
6671	return 0;
6672
6673	rl = &sc->rlayer;
6674
6675	return rl->rrlmethod->free_buffers(rl->rrl)
6676	&& rl->wrlmethod->free_buffers(rl->wrl);
6677	}
6678
6679	int SSL_alloc_buffers(SSL *ssl)
6680	{
6681	RECORD_LAYER *rl;
6682	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6683
6684	if (sc == NULL)
6685	return 0;
6686
6687	/* QUIC always has buffers allocated. */
6688	if (IS_QUIC(ssl))
6689	return 1;
6690
6691	rl = &sc->rlayer;
6692
6693	return rl->rrlmethod->alloc_buffers(rl->rrl)
6694	&& rl->wrlmethod->alloc_buffers(rl->wrl);
6695	}
6696
6697	void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6698	{
6699	ctx->keylog_callback = cb;
6700	}
6701
6702	SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6703	{
6704	return ctx->keylog_callback;
6705	}
6706
6707	static int nss_keylog_int(const char *prefix,
6708	SSL_CONNECTION *sc,
6709	const uint8_t *parameter_1,
6710	size_t parameter_1_len,
6711	const uint8_t *parameter_2,
6712	size_t parameter_2_len)
6713	{
6714	char *out = NULL;
6715	char *cursor = NULL;
6716	size_t out_len = 0;
6717	size_t i;
6718	size_t prefix_len;
6719	SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6720
6721	if (sctx->keylog_callback == NULL)
6722	return 1;
6723
6724	/*
6725	* Our output buffer will contain the following strings, rendered with
6726	* space characters in between, terminated by a NULL character: first the
6727	* prefix, then the first parameter, then the second parameter. The
6728	* meaning of each parameter depends on the specific key material being
6729	* logged. Note that the first and second parameters are encoded in
6730	* hexadecimal, so we need a buffer that is twice their lengths.
6731	*/
6732	prefix_len = strlen(prefix);
6733	out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6734	if ((out = cursor = OPENSSL_malloc(out_len)) == NULL)
6735	return 0;
6736
6737	strcpy(cursor, prefix);
6738	cursor += prefix_len;
6739	*cursor++ = ' ';
6740
6741	for (i = 0; i < parameter_1_len; i++) {
6742	sprintf(cursor, "%02x", parameter_1[i]);
6743	cursor += 2;
6744	}
6745	*cursor++ = ' ';
6746
6747	for (i = 0; i < parameter_2_len; i++) {
6748	sprintf(cursor, "%02x", parameter_2[i]);
6749	cursor += 2;
6750	}
6751	*cursor = '\0';
6752
6753	sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6754	OPENSSL_clear_free(out, out_len);
6755	return 1;
6756
6757	}
6758
6759	int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6760	const uint8_t *encrypted_premaster,
6761	size_t encrypted_premaster_len,
6762	const uint8_t *premaster,
6763	size_t premaster_len)
6764	{
6765	if (encrypted_premaster_len < 8) {
6766	SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6767	return 0;
6768	}
6769
6770	/* We only want the first 8 bytes of the encrypted premaster as a tag. */
6771	return nss_keylog_int("RSA",
6772	sc,
6773	encrypted_premaster,
6774	8,
6775	premaster,
6776	premaster_len);
6777	}
6778
6779	int ssl_log_secret(SSL_CONNECTION *sc,
6780	const char *label,
6781	const uint8_t *secret,
6782	size_t secret_len)
6783	{
6784	return nss_keylog_int(label,
6785	sc,
6786	sc->s3.client_random,
6787	SSL3_RANDOM_SIZE,
6788	secret,
6789	secret_len);
6790	}
6791
6792	#define SSLV2_CIPHER_LEN 3
6793
6794	int ssl_cache_cipherlist(SSL_CONNECTION s, PACKET cipher_suites, int sslv2format)
6795	{
6796	int n;
6797
6798	n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6799
6800	if (PACKET_remaining(cipher_suites) == 0) {
6801	SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6802	return 0;
6803	}
6804
6805	if (PACKET_remaining(cipher_suites) % n != 0) {
6806	SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6807	return 0;
6808	}
6809
6810	OPENSSL_free(s->s3.tmp.ciphers_raw);
6811	s->s3.tmp.ciphers_raw = NULL;
6812	s->s3.tmp.ciphers_rawlen = 0;
6813
6814	if (sslv2format) {
6815	size_t numciphers = PACKET_remaining(cipher_suites) / n;
6816	PACKET sslv2ciphers = *cipher_suites;
6817	unsigned int leadbyte;
6818	unsigned char *raw;
6819
6820	/*
6821	* We store the raw ciphers list in SSLv3+ format so we need to do some
6822	* preprocessing to convert the list first. If there are any SSLv2 only
6823	* ciphersuites with a non-zero leading byte then we are going to
6824	* slightly over allocate because we won't store those. But that isn't a
6825	* problem.
6826	*/
6827	raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6828	s->s3.tmp.ciphers_raw = raw;
6829	if (raw == NULL) {
6830	SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6831	return 0;
6832	}
6833	for (s->s3.tmp.ciphers_rawlen = 0;
6834	PACKET_remaining(&sslv2ciphers) > 0;
6835	raw += TLS_CIPHER_LEN) {
6836	if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6837	\|\| (leadbyte == 0
6838	&& !PACKET_copy_bytes(&sslv2ciphers, raw,
6839	TLS_CIPHER_LEN))
6840	\|\| (leadbyte != 0
6841	&& !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6842	SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6843	OPENSSL_free(s->s3.tmp.ciphers_raw);
6844	s->s3.tmp.ciphers_raw = NULL;
6845	s->s3.tmp.ciphers_rawlen = 0;
6846	return 0;
6847	}
6848	if (leadbyte == 0)
6849	s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6850	}
6851	} else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6852	&s->s3.tmp.ciphers_rawlen)) {
6853	SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6854	return 0;
6855	}
6856	return 1;
6857	}
6858
6859	int SSL_bytes_to_cipher_list(SSL s, const unsigned char bytes, size_t len,
6860	int isv2format, STACK_OF(SSL_CIPHER) **sk,
6861	STACK_OF(SSL_CIPHER) **scsvs)
6862	{
6863	PACKET pkt;
6864	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6865
6866	if (sc == NULL)
6867	return 0;
6868
6869	if (!PACKET_buf_init(&pkt, bytes, len))
6870	return 0;
6871	return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6872	}
6873
6874	int ossl_bytes_to_cipher_list(SSL_CONNECTION s, PACKET cipher_suites,
6875	STACK_OF(SSL_CIPHER) **skp,
6876	STACK_OF(SSL_CIPHER) **scsvs_out,
6877	int sslv2format, int fatal)
6878	{
6879	const SSL_CIPHER *c;
6880	STACK_OF(SSL_CIPHER) *sk = NULL;
6881	STACK_OF(SSL_CIPHER) *scsvs = NULL;
6882	int n;
6883	/* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6884	unsigned char cipher[SSLV2_CIPHER_LEN];
6885
6886	n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6887
6888	if (PACKET_remaining(cipher_suites) == 0) {
6889	if (fatal)
6890	SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6891	else
6892	ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6893	return 0;
6894	}
6895
6896	if (PACKET_remaining(cipher_suites) % n != 0) {
6897	if (fatal)
6898	SSLfatal(s, SSL_AD_DECODE_ERROR,
6899	SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6900	else
6901	ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6902	return 0;
6903	}
6904
6905	sk = sk_SSL_CIPHER_new_null();
6906	scsvs = sk_SSL_CIPHER_new_null();
6907	if (sk == NULL \|\| scsvs == NULL) {
6908	if (fatal)
6909	SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6910	else
6911	ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6912	goto err;
6913	}
6914
6915	while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6916	/*
6917	* SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6918	* first byte set to zero, while true SSLv2 ciphers have a non-zero
6919	* first byte. We don't support any true SSLv2 ciphers, so skip them.
6920	*/
6921	if (sslv2format && cipher[0] != '\0')
6922	continue;
6923
6924	/* For SSLv2-compat, ignore leading 0-byte. */
6925	c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6926	if (c != NULL) {
6927	if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) \|\|
6928	(!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6929	if (fatal)
6930	SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6931	else
6932	ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6933	goto err;
6934	}
6935	}
6936	}
6937	if (PACKET_remaining(cipher_suites) > 0) {
6938	if (fatal)
6939	SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6940	else
6941	ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6942	goto err;
6943	}
6944
6945	if (skp != NULL)
6946	*skp = sk;
6947	else
6948	sk_SSL_CIPHER_free(sk);
6949	if (scsvs_out != NULL)
6950	*scsvs_out = scsvs;
6951	else
6952	sk_SSL_CIPHER_free(scsvs);
6953	return 1;
6954	err:
6955	sk_SSL_CIPHER_free(sk);
6956	sk_SSL_CIPHER_free(scsvs);
6957	return 0;
6958	}
6959
6960	int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6961	{
6962	ctx->max_early_data = max_early_data;
6963
6964	return 1;
6965	}
6966
6967	uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6968	{
6969	return ctx->max_early_data;
6970	}
6971
6972	int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6973	{
6974	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
6975
6976	if (sc == NULL)
6977	return 0;
6978
6979	sc->max_early_data = max_early_data;
6980
6981	return 1;
6982	}
6983
6984	uint32_t SSL_get_max_early_data(const SSL *s)
6985	{
6986	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6987
6988	if (sc == NULL)
6989	return 0;
6990
6991	return sc->max_early_data;
6992	}
6993
6994	int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6995	{
6996	ctx->recv_max_early_data = recv_max_early_data;
6997
6998	return 1;
6999	}
7000
7001	uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
7002	{
7003	return ctx->recv_max_early_data;
7004	}
7005
7006	int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
7007	{
7008	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7009
7010	if (sc == NULL)
7011	return 0;
7012
7013	sc->recv_max_early_data = recv_max_early_data;
7014
7015	return 1;
7016	}
7017
7018	uint32_t SSL_get_recv_max_early_data(const SSL *s)
7019	{
7020	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
7021
7022	if (sc == NULL)
7023	return 0;
7024
7025	return sc->recv_max_early_data;
7026	}
7027
7028	__owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
7029	{
7030	/* Return any active Max Fragment Len extension */
7031	if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
7032	return GET_MAX_FRAGMENT_LENGTH(sc->session);
7033
7034	/* return current SSL connection setting */
7035	return sc->max_send_fragment;
7036	}
7037
7038	__owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
7039	{
7040	/* Return a value regarding an active Max Fragment Len extension */
7041	if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
7042	&& sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
7043	return GET_MAX_FRAGMENT_LENGTH(sc->session);
7044
7045	/* else limit \|split_send_fragment\| to current \|max_send_fragment\| */
7046	if (sc->split_send_fragment > sc->max_send_fragment)
7047	return sc->max_send_fragment;
7048
7049	/* return current SSL connection setting */
7050	return sc->split_send_fragment;
7051	}
7052
7053	int SSL_stateless(SSL *s)
7054	{
7055	int ret;
7056	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7057
7058	if (sc == NULL)
7059	return 0;
7060
7061	/* Ensure there is no state left over from a previous invocation */
7062	if (!SSL_clear(s))
7063	return 0;
7064
7065	ERR_clear_error();
7066
7067	sc->s3.flags \|= TLS1_FLAGS_STATELESS;
7068	ret = SSL_accept(s);
7069	sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
7070
7071	if (ret > 0 && sc->ext.cookieok)
7072	return 1;
7073
7074	if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
7075	return 0;
7076
7077	return -1;
7078	}
7079
7080	void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
7081	{
7082	ctx->pha_enabled = val;
7083	}
7084
7085	void SSL_set_post_handshake_auth(SSL *ssl, int val)
7086	{
7087	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
7088
7089	if (sc == NULL)
7090	return;
7091
7092	sc->pha_enabled = val;
7093	}
7094
7095	int SSL_verify_client_post_handshake(SSL *ssl)
7096	{
7097	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
7098
7099	#ifndef OPENSSL_NO_QUIC
7100	if (IS_QUIC(ssl)) {
7101	ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
7102	return 0;
7103	}
7104	#endif
7105
7106	if (sc == NULL)
7107	return 0;
7108
7109	if (!SSL_CONNECTION_IS_TLS13(sc)) {
7110	ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
7111	return 0;
7112	}
7113	if (!sc->server) {
7114	ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
7115	return 0;
7116	}
7117
7118	if (!SSL_is_init_finished(ssl)) {
7119	ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
7120	return 0;
7121	}
7122
7123	switch (sc->post_handshake_auth) {
7124	case SSL_PHA_NONE:
7125	ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
7126	return 0;
7127	default:
7128	case SSL_PHA_EXT_SENT:
7129	ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
7130	return 0;
7131	case SSL_PHA_EXT_RECEIVED:
7132	break;
7133	case SSL_PHA_REQUEST_PENDING:
7134	ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
7135	return 0;
7136	case SSL_PHA_REQUESTED:
7137	ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
7138	return 0;
7139	}
7140
7141	sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
7142
7143	/* checks verify_mode and algorithm_auth */
7144	if (!send_certificate_request(sc)) {
7145	sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
7146	ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
7147	return 0;
7148	}
7149
7150	ossl_statem_set_in_init(sc, 1);
7151	return 1;
7152	}
7153
7154	int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
7155	SSL_CTX_generate_session_ticket_fn gen_cb,
7156	SSL_CTX_decrypt_session_ticket_fn dec_cb,
7157	void *arg)
7158	{
7159	ctx->generate_ticket_cb = gen_cb;
7160	ctx->decrypt_ticket_cb = dec_cb;
7161	ctx->ticket_cb_data = arg;
7162	return 1;
7163	}
7164
7165	void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
7166	SSL_allow_early_data_cb_fn cb,
7167	void *arg)
7168	{
7169	ctx->allow_early_data_cb = cb;
7170	ctx->allow_early_data_cb_data = arg;
7171	}
7172
7173	void SSL_set_allow_early_data_cb(SSL *s,
7174	SSL_allow_early_data_cb_fn cb,
7175	void *arg)
7176	{
7177	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7178
7179	if (sc == NULL)
7180	return;
7181
7182	sc->allow_early_data_cb = cb;
7183	sc->allow_early_data_cb_data = arg;
7184	}
7185
7186	const EVP_CIPHER ssl_evp_cipher_fetch(OSSL_LIB_CTX libctx,
7187	int nid,
7188	const char *properties)
7189	{
7190	const EVP_CIPHER *ciph;
7191
7192	ciph = tls_get_cipher_from_engine(nid);
7193	if (ciph != NULL)
7194	return ciph;
7195
7196	/*
7197	* If there is no engine cipher then we do an explicit fetch. This may fail
7198	* and that could be ok
7199	*/
7200	ERR_set_mark();
7201	ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
7202	ERR_pop_to_mark();
7203	return ciph;
7204	}
7205
7206
7207	int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
7208	{
7209	/* Don't up-ref an implicit EVP_CIPHER */
7210	if (EVP_CIPHER_get0_provider(cipher) == NULL)
7211	return 1;
7212
7213	/*
7214	* The cipher was explicitly fetched and therefore it is safe to cast
7215	* away the const
7216	*/
7217	return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
7218	}
7219
7220	void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
7221	{
7222	if (cipher == NULL)
7223	return;
7224
7225	if (EVP_CIPHER_get0_provider(cipher) != NULL) {
7226	/*
7227	* The cipher was explicitly fetched and therefore it is safe to cast
7228	* away the const
7229	*/
7230	EVP_CIPHER_free((EVP_CIPHER *)cipher);
7231	}
7232	}
7233
7234	const EVP_MD ssl_evp_md_fetch(OSSL_LIB_CTX libctx,
7235	int nid,
7236	const char *properties)
7237	{
7238	const EVP_MD *md;
7239
7240	md = tls_get_digest_from_engine(nid);
7241	if (md != NULL)
7242	return md;
7243
7244	/* Otherwise we do an explicit fetch */
7245	ERR_set_mark();
7246	md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
7247	ERR_pop_to_mark();
7248	return md;
7249	}
7250
7251	int ssl_evp_md_up_ref(const EVP_MD *md)
7252	{
7253	/* Don't up-ref an implicit EVP_MD */
7254	if (EVP_MD_get0_provider(md) == NULL)
7255	return 1;
7256
7257	/*
7258	* The digest was explicitly fetched and therefore it is safe to cast
7259	* away the const
7260	*/
7261	return EVP_MD_up_ref((EVP_MD *)md);
7262	}
7263
7264	void ssl_evp_md_free(const EVP_MD *md)
7265	{
7266	if (md == NULL)
7267	return;
7268
7269	if (EVP_MD_get0_provider(md) != NULL) {
7270	/*
7271	* The digest was explicitly fetched and therefore it is safe to cast
7272	* away the const
7273	*/
7274	EVP_MD_free((EVP_MD *)md);
7275	}
7276	}
7277
7278	int SSL_set0_tmp_dh_pkey(SSL s, EVP_PKEY dhpkey)
7279	{
7280	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7281
7282	if (sc == NULL)
7283	return 0;
7284
7285	if (!ssl_security(sc, SSL_SECOP_TMP_DH,
7286	EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
7287	ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
7288	return 0;
7289	}
7290	EVP_PKEY_free(sc->cert->dh_tmp);
7291	sc->cert->dh_tmp = dhpkey;
7292	return 1;
7293	}
7294
7295	int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX ctx, EVP_PKEY dhpkey)
7296	{
7297	if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
7298	EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
7299	ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
7300	return 0;
7301	}
7302	EVP_PKEY_free(ctx->cert->dh_tmp);
7303	ctx->cert->dh_tmp = dhpkey;
7304	return 1;
7305	}
7306
7307	/* QUIC-specific methods which are supported on QUIC connections only. */
7308	int SSL_handle_events(SSL *s)
7309	{
7310	SSL_CONNECTION *sc;
7311
7312	#ifndef OPENSSL_NO_QUIC
7313	if (IS_QUIC(s))
7314	return ossl_quic_handle_events(s);
7315	#endif
7316
7317	sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7318	if (sc != NULL && SSL_CONNECTION_IS_DTLS(sc))
7319	/*
7320	* DTLSv1_handle_timeout returns 0 if the timer wasn't expired yet,
7321	* which we consider a success case. Theoretically DTLSv1_handle_timeout
7322	* can also return 0 if s is NULL or not a DTLS object, but we've
7323	* already ruled out those possibilities above, so this is not possible
7324	* here. Thus the only failure cases are where DTLSv1_handle_timeout
7325	* returns -1.
7326	*/
7327	return DTLSv1_handle_timeout(s) >= 0;
7328
7329	return 1;
7330	}
7331
7332	int SSL_get_event_timeout(SSL s, struct timeval tv, int *is_infinite)
7333	{
7334	SSL_CONNECTION *sc;
7335
7336	#ifndef OPENSSL_NO_QUIC
7337	if (IS_QUIC(s))
7338	return ossl_quic_get_event_timeout(s, tv, is_infinite);
7339	#endif
7340
7341	sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7342	if (sc != NULL && SSL_CONNECTION_IS_DTLS(sc)
7343	&& DTLSv1_get_timeout(s, tv)) {
7344	*is_infinite = 0;
7345	return 1;
7346	}
7347
7348	tv->tv_sec = 1000000;
7349	tv->tv_usec = 0;
7350	*is_infinite = 1;
7351	return 1;
7352	}
7353
7354	int SSL_get_rpoll_descriptor(SSL s, BIO_POLL_DESCRIPTOR desc)
7355	{
7356	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7357
7358	#ifndef OPENSSL_NO_QUIC
7359	if (IS_QUIC(s))
7360	return ossl_quic_get_rpoll_descriptor(s, desc);
7361	#endif
7362
7363	if (sc == NULL \|\| sc->rbio == NULL)
7364	return 0;
7365
7366	return BIO_get_rpoll_descriptor(sc->rbio, desc);
7367	}
7368
7369	int SSL_get_wpoll_descriptor(SSL s, BIO_POLL_DESCRIPTOR desc)
7370	{
7371	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7372
7373	#ifndef OPENSSL_NO_QUIC
7374	if (IS_QUIC(s))
7375	return ossl_quic_get_wpoll_descriptor(s, desc);
7376	#endif
7377
7378	if (sc == NULL \|\| sc->wbio == NULL)
7379	return 0;
7380
7381	return BIO_get_wpoll_descriptor(sc->wbio, desc);
7382	}
7383
7384	int SSL_net_read_desired(SSL *s)
7385	{
7386	#ifndef OPENSSL_NO_QUIC
7387	if (!IS_QUIC(s))
7388	return SSL_want_read(s);
7389
7390	return ossl_quic_get_net_read_desired(s);
7391	#else
7392	return SSL_want_read(s);
7393	#endif
7394	}
7395
7396	int SSL_net_write_desired(SSL *s)
7397	{
7398	#ifndef OPENSSL_NO_QUIC
7399	if (!IS_QUIC(s))
7400	return SSL_want_write(s);
7401
7402	return ossl_quic_get_net_write_desired(s);
7403	#else
7404	return SSL_want_write(s);
7405	#endif
7406	}
7407
7408	int SSL_set_blocking_mode(SSL *s, int blocking)
7409	{
7410	#ifndef OPENSSL_NO_QUIC
7411	if (!IS_QUIC(s))
7412	return 0;
7413
7414	return ossl_quic_conn_set_blocking_mode(s, blocking);
7415	#else
7416	return 0;
7417	#endif
7418	}
7419
7420	int SSL_get_blocking_mode(SSL *s)
7421	{
7422	#ifndef OPENSSL_NO_QUIC
7423	if (!IS_QUIC(s))
7424	return -1;
7425
7426	return ossl_quic_conn_get_blocking_mode(s);
7427	#else
7428	return -1;
7429	#endif
7430	}
7431
7432	int SSL_set1_initial_peer_addr(SSL s, const BIO_ADDR peer_addr)
7433	{
7434	#ifndef OPENSSL_NO_QUIC
7435	if (!IS_QUIC(s))
7436	return 0;
7437
7438	return ossl_quic_conn_set_initial_peer_addr(s, peer_addr);
7439	#else
7440	return 0;
7441	#endif
7442	}
7443
7444	int SSL_shutdown_ex(SSL *ssl, uint64_t flags,
7445	const SSL_SHUTDOWN_EX_ARGS *args,
7446	size_t args_len)
7447	{
7448	#ifndef OPENSSL_NO_QUIC
7449	if (!IS_QUIC(ssl))
7450	return SSL_shutdown(ssl);
7451
7452	return ossl_quic_conn_shutdown(ssl, flags, args, args_len);
7453	#else
7454	return SSL_shutdown(ssl);
7455	#endif
7456	}
7457
7458	int SSL_stream_conclude(SSL *ssl, uint64_t flags)
7459	{
7460	#ifndef OPENSSL_NO_QUIC
7461	if (!IS_QUIC(ssl))
7462	return 0;
7463
7464	return ossl_quic_conn_stream_conclude(ssl);
7465	#else
7466	return 0;
7467	#endif
7468	}
7469
7470	SSL SSL_new_stream(SSL s, uint64_t flags)
7471	{
7472	#ifndef OPENSSL_NO_QUIC
7473	if (!IS_QUIC(s))
7474	return NULL;
7475
7476	return ossl_quic_conn_stream_new(s, flags);
7477	#else
7478	return NULL;
7479	#endif
7480	}
7481
7482	SSL SSL_get0_connection(SSL s)
7483	{
7484	#ifndef OPENSSL_NO_QUIC
7485	if (!IS_QUIC(s))
7486	return s;
7487
7488	return ossl_quic_get0_connection(s);
7489	#else
7490	return s;
7491	#endif
7492	}
7493
7494	int SSL_is_connection(SSL *s)
7495	{
7496	return SSL_get0_connection(s) == s;
7497	}
7498
7499	int SSL_get_stream_type(SSL *s)
7500	{
7501	#ifndef OPENSSL_NO_QUIC
7502	if (!IS_QUIC(s))
7503	return SSL_STREAM_TYPE_BIDI;
7504
7505	return ossl_quic_get_stream_type(s);
7506	#else
7507	return SSL_STREAM_TYPE_BIDI;
7508	#endif
7509	}
7510
7511	uint64_t SSL_get_stream_id(SSL *s)
7512	{
7513	#ifndef OPENSSL_NO_QUIC
7514	if (!IS_QUIC(s))
7515	return UINT64_MAX;
7516
7517	return ossl_quic_get_stream_id(s);
7518	#else
7519	return UINT64_MAX;
7520	#endif
7521	}
7522
7523	int SSL_is_stream_local(SSL *s)
7524	{
7525	#ifndef OPENSSL_NO_QUIC
7526	if (!IS_QUIC(s))
7527	return -1;
7528
7529	return ossl_quic_is_stream_local(s);
7530	#else
7531	return -1;
7532	#endif
7533	}
7534
7535	int SSL_set_default_stream_mode(SSL *s, uint32_t mode)
7536	{
7537	#ifndef OPENSSL_NO_QUIC
7538	if (!IS_QUIC(s))
7539	return 0;
7540
7541	return ossl_quic_set_default_stream_mode(s, mode);
7542	#else
7543	return 0;
7544	#endif
7545	}
7546
7547	int SSL_set_incoming_stream_policy(SSL *s, int policy, uint64_t aec)
7548	{
7549	#ifndef OPENSSL_NO_QUIC
7550	if (!IS_QUIC(s))
7551	return 0;
7552
7553	return ossl_quic_set_incoming_stream_policy(s, policy, aec);
7554	#else
7555	return 0;
7556	#endif
7557	}
7558
7559	SSL SSL_accept_stream(SSL s, uint64_t flags)
7560	{
7561	#ifndef OPENSSL_NO_QUIC
7562	if (!IS_QUIC(s))
7563	return NULL;
7564
7565	return ossl_quic_accept_stream(s, flags);
7566	#else
7567	return NULL;
7568	#endif
7569	}
7570
7571	size_t SSL_get_accept_stream_queue_len(SSL *s)
7572	{
7573	#ifndef OPENSSL_NO_QUIC
7574	if (!IS_QUIC(s))
7575	return 0;
7576
7577	return ossl_quic_get_accept_stream_queue_len(s);
7578	#else
7579	return 0;
7580	#endif
7581	}
7582
7583	int SSL_stream_reset(SSL *s,
7584	const SSL_STREAM_RESET_ARGS *args,
7585	size_t args_len)
7586	{
7587	#ifndef OPENSSL_NO_QUIC
7588	if (!IS_QUIC(s))
7589	return 0;
7590
7591	return ossl_quic_stream_reset(s, args, args_len);
7592	#else
7593	return 0;
7594	#endif
7595	}
7596
7597	int SSL_get_stream_read_state(SSL *s)
7598	{
7599	#ifndef OPENSSL_NO_QUIC
7600	if (!IS_QUIC(s))
7601	return SSL_STREAM_STATE_NONE;
7602
7603	return ossl_quic_get_stream_read_state(s);
7604	#else
7605	return SSL_STREAM_STATE_NONE;
7606	#endif
7607	}
7608
7609	int SSL_get_stream_write_state(SSL *s)
7610	{
7611	#ifndef OPENSSL_NO_QUIC
7612	if (!IS_QUIC(s))
7613	return SSL_STREAM_STATE_NONE;
7614
7615	return ossl_quic_get_stream_write_state(s);
7616	#else
7617	return SSL_STREAM_STATE_NONE;
7618	#endif
7619	}
7620
7621	int SSL_get_stream_read_error_code(SSL s, uint64_t app_error_code)
7622	{
7623	#ifndef OPENSSL_NO_QUIC
7624	if (!IS_QUIC(s))
7625	return -1;
7626
7627	return ossl_quic_get_stream_read_error_code(s, app_error_code);
7628	#else
7629	return -1;
7630	#endif
7631	}
7632
7633	int SSL_get_stream_write_error_code(SSL s, uint64_t app_error_code)
7634	{
7635	#ifndef OPENSSL_NO_QUIC
7636	if (!IS_QUIC(s))
7637	return -1;
7638
7639	return ossl_quic_get_stream_write_error_code(s, app_error_code);
7640	#else
7641	return -1;
7642	#endif
7643	}
7644
7645	int SSL_get_conn_close_info(SSL s, SSL_CONN_CLOSE_INFO info,
7646	size_t info_len)
7647	{
7648	#ifndef OPENSSL_NO_QUIC
7649	if (!IS_QUIC(s))
7650	return -1;
7651
7652	return ossl_quic_get_conn_close_info(s, info, info_len);
7653	#else
7654	return -1;
7655	#endif
7656	}
7657
7658	int SSL_get_value_uint(SSL *s, uint32_t class_, uint32_t id,
7659	uint64_t *value)
7660	{
7661	#ifndef OPENSSL_NO_QUIC
7662	if (IS_QUIC(s))
7663	return ossl_quic_get_value_uint(s, class_, id, value);
7664	#endif
7665
7666	ERR_raise(ERR_LIB_SSL, SSL_R_UNSUPPORTED_PROTOCOL);
7667	return 0;
7668	}
7669
7670	int SSL_set_value_uint(SSL *s, uint32_t class_, uint32_t id,
7671	uint64_t value)
7672	{
7673	#ifndef OPENSSL_NO_QUIC
7674	if (IS_QUIC(s))
7675	return ossl_quic_set_value_uint(s, class_, id, value);
7676	#endif
7677
7678	ERR_raise(ERR_LIB_SSL, SSL_R_UNSUPPORTED_PROTOCOL);
7679	return 0;
7680	}
7681
7682	int SSL_add_expected_rpk(SSL s, EVP_PKEY rpk)
7683	{
7684	unsigned char *data = NULL;
7685	SSL_DANE *dane = SSL_get0_dane(s);
7686	int ret;
7687
7688	if (dane == NULL \|\| dane->dctx == NULL)
7689	return 0;
7690	if ((ret = i2d_PUBKEY(rpk, &data)) <= 0)
7691	return 0;
7692
7693	ret = SSL_dane_tlsa_add(s, DANETLS_USAGE_DANE_EE,
7694	DANETLS_SELECTOR_SPKI,
7695	DANETLS_MATCHING_FULL,
7696	data, (size_t)ret) > 0;
7697	OPENSSL_free(data);
7698	return ret;
7699	}
7700
7701	EVP_PKEY SSL_get0_peer_rpk(const SSL s)
7702	{
7703	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7704
7705	if (sc == NULL \|\| sc->session == NULL)
7706	return NULL;
7707	return sc->session->peer_rpk;
7708	}
7709
7710	int SSL_get_negotiated_client_cert_type(const SSL *s)
7711	{
7712	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7713
7714	if (sc == NULL)
7715	return 0;
7716
7717	return sc->ext.client_cert_type;
7718	}
7719
7720	int SSL_get_negotiated_server_cert_type(const SSL *s)
7721	{
7722	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7723
7724	if (sc == NULL)
7725	return 0;
7726
7727	return sc->ext.server_cert_type;
7728	}
7729
7730	static int validate_cert_type(const unsigned char *val, size_t len)
7731	{
7732	size_t i;
7733	int saw_rpk = 0;
7734	int saw_x509 = 0;
7735
7736	if (val == NULL && len == 0)
7737	return 1;
7738
7739	if (val == NULL \|\| len == 0)
7740	return 0;
7741
7742	for (i = 0; i < len; i++) {
7743	switch (val[i]) {
7744	case TLSEXT_cert_type_rpk:
7745	if (saw_rpk)
7746	return 0;
7747	saw_rpk = 1;
7748	break;
7749	case TLSEXT_cert_type_x509:
7750	if (saw_x509)
7751	return 0;
7752	saw_x509 = 1;
7753	break;
7754	case TLSEXT_cert_type_pgp:
7755	case TLSEXT_cert_type_1609dot2:
7756	default:
7757	return 0;
7758	}
7759	}
7760	return 1;
7761	}
7762
7763	static int set_cert_type(unsigned char **cert_type,
7764	size_t *cert_type_len,
7765	const unsigned char *val,
7766	size_t len)
7767	{
7768	unsigned char *tmp = NULL;
7769
7770	if (!validate_cert_type(val, len))
7771	return 0;
7772
7773	if (val != NULL && (tmp = OPENSSL_memdup(val, len)) == NULL)
7774	return 0;
7775
7776	OPENSSL_free(*cert_type);
7777	*cert_type = tmp;
7778	*cert_type_len = len;
7779	return 1;
7780	}
7781
7782	int SSL_set1_client_cert_type(SSL s, const unsigned char val, size_t len)
7783	{
7784	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7785
7786	return set_cert_type(&sc->client_cert_type, &sc->client_cert_type_len,
7787	val, len);
7788	}
7789
7790	int SSL_set1_server_cert_type(SSL s, const unsigned char val, size_t len)
7791	{
7792	SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7793
7794	return set_cert_type(&sc->server_cert_type, &sc->server_cert_type_len,
7795	val, len);
7796	}
7797
7798	int SSL_CTX_set1_client_cert_type(SSL_CTX ctx, const unsigned char val, size_t len)
7799	{
7800	return set_cert_type(&ctx->client_cert_type, &ctx->client_cert_type_len,
7801	val, len);
7802	}
7803
7804	int SSL_CTX_set1_server_cert_type(SSL_CTX ctx, const unsigned char val, size_t len)
7805	{
7806	return set_cert_type(&ctx->server_cert_type, &ctx->server_cert_type_len,
7807	val, len);
7808	}
7809
7810	int SSL_get0_client_cert_type(const SSL s, unsigned char t, size_t len)
7811	{
7812	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
7813
7814	if (t == NULL \|\| len == NULL)
7815	return 0;
7816
7817	*t = sc->client_cert_type;
7818	*len = sc->client_cert_type_len;
7819	return 1;
7820	}
7821
7822	int SSL_get0_server_cert_type(const SSL s, unsigned char t, size_t len)
7823	{
7824	const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
7825
7826	if (t == NULL \|\| len == NULL)
7827	return 0;
7828
7829	*t = sc->server_cert_type;
7830	*len = sc->server_cert_type_len;
7831	return 1;
7832	}
7833
7834	int SSL_CTX_get0_client_cert_type(const SSL_CTX ctx, unsigned char t, size_t len)
7835	{
7836	if (t == NULL \|\| len == NULL)
7837	return 0;
7838
7839	*t = ctx->client_cert_type;
7840	*len = ctx->client_cert_type_len;
7841	return 1;
7842	}
7843
7844	int SSL_CTX_get0_server_cert_type(const SSL_CTX ctx, unsigned char t, size_t len)
7845	{
7846	if (t == NULL \|\| len == NULL)
7847	return 0;
7848
7849	*t = ctx->server_cert_type;
7850	*len = ctx->server_cert_type_len;
7851	return 1;
7852	}

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source: vbox/trunk/src/libs/openssl-3.3.2/ssl/ssl_lib.c

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