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1/*! \file ssl/ssl_lib.c
2 * \brief Version independent SSL functions.
3 */
4/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * All rights reserved.
6 *
7 * This package is an SSL implementation written
8 * by Eric Young (eay@cryptsoft.com).
9 * The implementation was written so as to conform with Netscapes SSL.
10 *
11 * This library is free for commercial and non-commercial use as long as
12 * the following conditions are aheared to. The following conditions
13 * apply to all code found in this distribution, be it the RC4, RSA,
14 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
15 * included with this distribution is covered by the same copyright terms
16 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
17 *
18 * Copyright remains Eric Young's, and as such any Copyright notices in
19 * the code are not to be removed.
20 * If this package is used in a product, Eric Young should be given attribution
21 * as the author of the parts of the library used.
22 * This can be in the form of a textual message at program startup or
23 * in documentation (online or textual) provided with the package.
24 *
25 * Redistribution and use in source and binary forms, with or without
26 * modification, are permitted provided that the following conditions
27 * are met:
28 * 1. Redistributions of source code must retain the copyright
29 * notice, this list of conditions and the following disclaimer.
30 * 2. Redistributions in binary form must reproduce the above copyright
31 * notice, this list of conditions and the following disclaimer in the
32 * documentation and/or other materials provided with the distribution.
33 * 3. All advertising materials mentioning features or use of this software
34 * must display the following acknowledgement:
35 * "This product includes cryptographic software written by
36 * Eric Young (eay@cryptsoft.com)"
37 * The word 'cryptographic' can be left out if the rouines from the library
38 * being used are not cryptographic related :-).
39 * 4. If you include any Windows specific code (or a derivative thereof) from
40 * the apps directory (application code) you must include an acknowledgement:
41 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
42 *
43 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
46 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * SUCH DAMAGE.
54 *
55 * The licence and distribution terms for any publically available version or
56 * derivative of this code cannot be changed. i.e. this code cannot simply be
57 * copied and put under another distribution licence
58 * [including the GNU Public Licence.]
59 */
60/* ====================================================================
61 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
62 *
63 * Redistribution and use in source and binary forms, with or without
64 * modification, are permitted provided that the following conditions
65 * are met:
66 *
67 * 1. Redistributions of source code must retain the above copyright
68 * notice, this list of conditions and the following disclaimer.
69 *
70 * 2. Redistributions in binary form must reproduce the above copyright
71 * notice, this list of conditions and the following disclaimer in
72 * the documentation and/or other materials provided with the
73 * distribution.
74 *
75 * 3. All advertising materials mentioning features or use of this
76 * software must display the following acknowledgment:
77 * "This product includes software developed by the OpenSSL Project
78 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
79 *
80 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
81 * endorse or promote products derived from this software without
82 * prior written permission. For written permission, please contact
83 * openssl-core@openssl.org.
84 *
85 * 5. Products derived from this software may not be called "OpenSSL"
86 * nor may "OpenSSL" appear in their names without prior written
87 * permission of the OpenSSL Project.
88 *
89 * 6. Redistributions of any form whatsoever must retain the following
90 * acknowledgment:
91 * "This product includes software developed by the OpenSSL Project
92 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
93 *
94 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
95 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
96 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
97 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
98 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
99 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
100 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
101 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
102 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
103 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
104 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
105 * OF THE POSSIBILITY OF SUCH DAMAGE.
106 * ====================================================================
107 *
108 * This product includes cryptographic software written by Eric Young
109 * (eay@cryptsoft.com). This product includes software written by Tim
110 * Hudson (tjh@cryptsoft.com).
111 *
112 */
113/* ====================================================================
114 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
115 * ECC cipher suite support in OpenSSL originally developed by
116 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
117 */
118/* ====================================================================
119 * Copyright 2005 Nokia. All rights reserved.
120 *
121 * The portions of the attached software ("Contribution") is developed by
122 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
123 * license.
124 *
125 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
126 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
127 * support (see RFC 4279) to OpenSSL.
128 *
129 * No patent licenses or other rights except those expressly stated in
130 * the OpenSSL open source license shall be deemed granted or received
131 * expressly, by implication, estoppel, or otherwise.
132 *
133 * No assurances are provided by Nokia that the Contribution does not
134 * infringe the patent or other intellectual property rights of any third
135 * party or that the license provides you with all the necessary rights
136 * to make use of the Contribution.
137 *
138 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
139 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
140 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
141 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
142 * OTHERWISE.
143 */
144
145#ifdef REF_CHECK
146# include <assert.h>
147#endif
148#include <stdio.h>
149#include "ssl_locl.h"
150#include "kssl_lcl.h"
151#include <openssl/objects.h>
152#include <openssl/lhash.h>
153#include <openssl/x509v3.h>
154#include <openssl/rand.h>
155#include <openssl/ocsp.h>
156#ifndef OPENSSL_NO_DH
157#include <openssl/dh.h>
158#endif
159#ifndef OPENSSL_NO_ENGINE
160#include <openssl/engine.h>
161#endif
162
163const char *SSL_version_str=OPENSSL_VERSION_TEXT;
164
165SSL3_ENC_METHOD ssl3_undef_enc_method={
166 /* evil casts, but these functions are only called if there's a library bug */
167 (int (*)(SSL *,int))ssl_undefined_function,
168 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
169 ssl_undefined_function,
170 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
171 (int (*)(SSL*, int))ssl_undefined_function,
172 (int (*)(SSL *, const char*, int, unsigned char *))ssl_undefined_function,
173 0, /* finish_mac_length */
174 (int (*)(SSL *, int, unsigned char *))ssl_undefined_function,
175 NULL, /* client_finished_label */
176 0, /* client_finished_label_len */
177 NULL, /* server_finished_label */
178 0, /* server_finished_label_len */
179 (int (*)(int))ssl_undefined_function,
180 (int (*)(SSL *, unsigned char *, size_t, const char *,
181 size_t, const unsigned char *, size_t,
182 int use_context)) ssl_undefined_function,
183 };
184
185int SSL_clear(SSL *s)
186 {
187
188 if (s->method == NULL)
189 {
190 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
191 return(0);
192 }
193
194 if (ssl_clear_bad_session(s))
195 {
196 SSL_SESSION_free(s->session);
197 s->session=NULL;
198 }
199
200 s->error=0;
201 s->hit=0;
202 s->shutdown=0;
203
204#if 0 /* Disabled since version 1.10 of this file (early return not
205 * needed because SSL_clear is not called when doing renegotiation) */
206 /* This is set if we are doing dynamic renegotiation so keep
207 * the old cipher. It is sort of a SSL_clear_lite :-) */
208 if (s->renegotiate) return(1);
209#else
210 if (s->renegotiate)
211 {
212 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR);
213 return 0;
214 }
215#endif
216
217 s->type=0;
218
219 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
220
221 s->version=s->method->version;
222 s->client_version=s->version;
223 s->rwstate=SSL_NOTHING;
224 s->rstate=SSL_ST_READ_HEADER;
225#if 0
226 s->read_ahead=s->ctx->read_ahead;
227#endif
228
229 if (s->init_buf != NULL)
230 {
231 BUF_MEM_free(s->init_buf);
232 s->init_buf=NULL;
233 }
234
235 ssl_clear_cipher_ctx(s);
236 ssl_clear_hash_ctx(&s->read_hash);
237 ssl_clear_hash_ctx(&s->write_hash);
238
239 s->first_packet=0;
240
241#if 1
242 /* Check to see if we were changed into a different method, if
243 * so, revert back if we are not doing session-id reuse. */
244 if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method))
245 {
246 s->method->ssl_free(s);
247 s->method=s->ctx->method;
248 if (!s->method->ssl_new(s))
249 return(0);
250 }
251 else
252#endif
253 s->method->ssl_clear(s);
254 return(1);
255 }
256
257/** Used to change an SSL_CTXs default SSL method type */
258int SSL_CTX_set_ssl_version(SSL_CTX *ctx,const SSL_METHOD *meth)
259 {
260 STACK_OF(SSL_CIPHER) *sk;
261
262 ctx->method=meth;
263
264 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
265 &(ctx->cipher_list_by_id),
266 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
267 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
268 {
269 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
270 return(0);
271 }
272 return(1);
273 }
274
275SSL *SSL_new(SSL_CTX *ctx)
276 {
277 SSL *s;
278
279 if (ctx == NULL)
280 {
281 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
282 return(NULL);
283 }
284 if (ctx->method == NULL)
285 {
286 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
287 return(NULL);
288 }
289
290 s=(SSL *)OPENSSL_malloc(sizeof(SSL));
291 if (s == NULL) goto err;
292 memset(s,0,sizeof(SSL));
293
294#ifndef OPENSSL_NO_KRB5
295 s->kssl_ctx = kssl_ctx_new();
296#endif /* OPENSSL_NO_KRB5 */
297
298 s->options=ctx->options;
299 s->mode=ctx->mode;
300 s->max_cert_list=ctx->max_cert_list;
301
302 if (ctx->cert != NULL)
303 {
304 /* Earlier library versions used to copy the pointer to
305 * the CERT, not its contents; only when setting new
306 * parameters for the per-SSL copy, ssl_cert_new would be
307 * called (and the direct reference to the per-SSL_CTX
308 * settings would be lost, but those still were indirectly
309 * accessed for various purposes, and for that reason they
310 * used to be known as s->ctx->default_cert).
311 * Now we don't look at the SSL_CTX's CERT after having
312 * duplicated it once. */
313
314 s->cert = ssl_cert_dup(ctx->cert);
315 if (s->cert == NULL)
316 goto err;
317 }
318 else
319 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
320
321 s->read_ahead=ctx->read_ahead;
322 s->msg_callback=ctx->msg_callback;
323 s->msg_callback_arg=ctx->msg_callback_arg;
324 s->verify_mode=ctx->verify_mode;
325#if 0
326 s->verify_depth=ctx->verify_depth;
327#endif
328 s->sid_ctx_length=ctx->sid_ctx_length;
329 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
330 memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
331 s->verify_callback=ctx->default_verify_callback;
332 s->generate_session_id=ctx->generate_session_id;
333
334 s->param = X509_VERIFY_PARAM_new();
335 if (!s->param)
336 goto err;
337 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
338#if 0
339 s->purpose = ctx->purpose;
340 s->trust = ctx->trust;
341#endif
342 s->quiet_shutdown=ctx->quiet_shutdown;
343 s->max_send_fragment = ctx->max_send_fragment;
344
345 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
346 s->ctx=ctx;
347#ifndef OPENSSL_NO_TLSEXT
348 s->tlsext_debug_cb = 0;
349 s->tlsext_debug_arg = NULL;
350 s->tlsext_ticket_expected = 0;
351 s->tlsext_status_type = -1;
352 s->tlsext_status_expected = 0;
353 s->tlsext_ocsp_ids = NULL;
354 s->tlsext_ocsp_exts = NULL;
355 s->tlsext_ocsp_resp = NULL;
356 s->tlsext_ocsp_resplen = -1;
357 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
358 s->initial_ctx=ctx;
359# ifndef OPENSSL_NO_NEXTPROTONEG
360 s->next_proto_negotiated = NULL;
361# endif
362#endif
363
364 s->verify_result=X509_V_OK;
365
366 s->method=ctx->method;
367
368 if (!s->method->ssl_new(s))
369 goto err;
370
371 s->references=1;
372 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
373
374 SSL_clear(s);
375
376 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
377
378#ifndef OPENSSL_NO_PSK
379 s->psk_client_callback=ctx->psk_client_callback;
380 s->psk_server_callback=ctx->psk_server_callback;
381#endif
382
383 return(s);
384err:
385 if (s != NULL)
386 {
387 if (s->cert != NULL)
388 ssl_cert_free(s->cert);
389 if (s->ctx != NULL)
390 SSL_CTX_free(s->ctx); /* decrement reference count */
391 OPENSSL_free(s);
392 }
393 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
394 return(NULL);
395 }
396
397int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
398 unsigned int sid_ctx_len)
399 {
400 if(sid_ctx_len > sizeof ctx->sid_ctx)
401 {
402 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
403 return 0;
404 }
405 ctx->sid_ctx_length=sid_ctx_len;
406 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
407
408 return 1;
409 }
410
411int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
412 unsigned int sid_ctx_len)
413 {
414 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
415 {
416 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
417 return 0;
418 }
419 ssl->sid_ctx_length=sid_ctx_len;
420 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
421
422 return 1;
423 }
424
425int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
426 {
427 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
428 ctx->generate_session_id = cb;
429 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
430 return 1;
431 }
432
433int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
434 {
435 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
436 ssl->generate_session_id = cb;
437 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
438 return 1;
439 }
440
441int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
442 unsigned int id_len)
443 {
444 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
445 * we can "construct" a session to give us the desired check - ie. to
446 * find if there's a session in the hash table that would conflict with
447 * any new session built out of this id/id_len and the ssl_version in
448 * use by this SSL. */
449 SSL_SESSION r, *p;
450
451 if(id_len > sizeof r.session_id)
452 return 0;
453
454 r.ssl_version = ssl->version;
455 r.session_id_length = id_len;
456 memcpy(r.session_id, id, id_len);
457 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
458 * callback is calling us to check the uniqueness of a shorter ID, it
459 * must be compared as a padded-out ID because that is what it will be
460 * converted to when the callback has finished choosing it. */
461 if((r.ssl_version == SSL2_VERSION) &&
462 (id_len < SSL2_SSL_SESSION_ID_LENGTH))
463 {
464 memset(r.session_id + id_len, 0,
465 SSL2_SSL_SESSION_ID_LENGTH - id_len);
466 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
467 }
468
469 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
470 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
471 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
472 return (p != NULL);
473 }
474
475int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
476 {
477 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
478 }
479
480int SSL_set_purpose(SSL *s, int purpose)
481 {
482 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
483 }
484
485int SSL_CTX_set_trust(SSL_CTX *s, int trust)
486 {
487 return X509_VERIFY_PARAM_set_trust(s->param, trust);
488 }
489
490int SSL_set_trust(SSL *s, int trust)
491 {
492 return X509_VERIFY_PARAM_set_trust(s->param, trust);
493 }
494
495int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
496 {
497 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
498 }
499
500int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
501 {
502 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
503 }
504
505void SSL_free(SSL *s)
506 {
507 int i;
508
509 if(s == NULL)
510 return;
511
512 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
513#ifdef REF_PRINT
514 REF_PRINT("SSL",s);
515#endif
516 if (i > 0) return;
517#ifdef REF_CHECK
518 if (i < 0)
519 {
520 fprintf(stderr,"SSL_free, bad reference count\n");
521 abort(); /* ok */
522 }
523#endif
524
525 if (s->param)
526 X509_VERIFY_PARAM_free(s->param);
527
528 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
529
530 if (s->bbio != NULL)
531 {
532 /* If the buffering BIO is in place, pop it off */
533 if (s->bbio == s->wbio)
534 {
535 s->wbio=BIO_pop(s->wbio);
536 }
537 BIO_free(s->bbio);
538 s->bbio=NULL;
539 }
540 if (s->rbio != NULL)
541 BIO_free_all(s->rbio);
542 if ((s->wbio != NULL) && (s->wbio != s->rbio))
543 BIO_free_all(s->wbio);
544
545 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
546
547 /* add extra stuff */
548 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
549 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
550
551 /* Make the next call work :-) */
552 if (s->session != NULL)
553 {
554 ssl_clear_bad_session(s);
555 SSL_SESSION_free(s->session);
556 }
557
558 ssl_clear_cipher_ctx(s);
559 ssl_clear_hash_ctx(&s->read_hash);
560 ssl_clear_hash_ctx(&s->write_hash);
561
562 if (s->cert != NULL) ssl_cert_free(s->cert);
563 /* Free up if allocated */
564
565#ifndef OPENSSL_NO_TLSEXT
566 if (s->tlsext_hostname)
567 OPENSSL_free(s->tlsext_hostname);
568 if (s->initial_ctx) SSL_CTX_free(s->initial_ctx);
569#ifndef OPENSSL_NO_EC
570 if (s->tlsext_ecpointformatlist) OPENSSL_free(s->tlsext_ecpointformatlist);
571 if (s->tlsext_ellipticcurvelist) OPENSSL_free(s->tlsext_ellipticcurvelist);
572#endif /* OPENSSL_NO_EC */
573 if (s->tlsext_opaque_prf_input) OPENSSL_free(s->tlsext_opaque_prf_input);
574 if (s->tlsext_ocsp_exts)
575 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts,
576 X509_EXTENSION_free);
577 if (s->tlsext_ocsp_ids)
578 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
579 if (s->tlsext_ocsp_resp)
580 OPENSSL_free(s->tlsext_ocsp_resp);
581#endif
582
583 if (s->client_CA != NULL)
584 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
585
586 if (s->method != NULL) s->method->ssl_free(s);
587
588 if (s->ctx) SSL_CTX_free(s->ctx);
589
590#ifndef OPENSSL_NO_KRB5
591 if (s->kssl_ctx != NULL)
592 kssl_ctx_free(s->kssl_ctx);
593#endif /* OPENSSL_NO_KRB5 */
594
595#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
596 if (s->next_proto_negotiated)
597 OPENSSL_free(s->next_proto_negotiated);
598#endif
599
600 if (s->srtp_profiles)
601 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
602
603 OPENSSL_free(s);
604 }
605
606void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
607 {
608 /* If the output buffering BIO is still in place, remove it
609 */
610 if (s->bbio != NULL)
611 {
612 if (s->wbio == s->bbio)
613 {
614 s->wbio=s->wbio->next_bio;
615 s->bbio->next_bio=NULL;
616 }
617 }
618 if ((s->rbio != NULL) && (s->rbio != rbio))
619 BIO_free_all(s->rbio);
620 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
621 BIO_free_all(s->wbio);
622 s->rbio=rbio;
623 s->wbio=wbio;
624 }
625
626BIO *SSL_get_rbio(const SSL *s)
627 { return(s->rbio); }
628
629BIO *SSL_get_wbio(const SSL *s)
630 { return(s->wbio); }
631
632int SSL_get_fd(const SSL *s)
633 {
634 return(SSL_get_rfd(s));
635 }
636
637int SSL_get_rfd(const SSL *s)
638 {
639 int ret= -1;
640 BIO *b,*r;
641
642 b=SSL_get_rbio(s);
643 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
644 if (r != NULL)
645 BIO_get_fd(r,&ret);
646 return(ret);
647 }
648
649int SSL_get_wfd(const SSL *s)
650 {
651 int ret= -1;
652 BIO *b,*r;
653
654 b=SSL_get_wbio(s);
655 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
656 if (r != NULL)
657 BIO_get_fd(r,&ret);
658 return(ret);
659 }
660
661#ifndef OPENSSL_NO_SOCK
662int SSL_set_fd(SSL *s,int fd)
663 {
664 int ret=0;
665 BIO *bio=NULL;
666
667 bio=BIO_new(BIO_s_socket());
668
669 if (bio == NULL)
670 {
671 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
672 goto err;
673 }
674 BIO_set_fd(bio,fd,BIO_NOCLOSE);
675 SSL_set_bio(s,bio,bio);
676 ret=1;
677err:
678 return(ret);
679 }
680
681int SSL_set_wfd(SSL *s,int fd)
682 {
683 int ret=0;
684 BIO *bio=NULL;
685
686 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
687 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
688 {
689 bio=BIO_new(BIO_s_socket());
690
691 if (bio == NULL)
692 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
693 BIO_set_fd(bio,fd,BIO_NOCLOSE);
694 SSL_set_bio(s,SSL_get_rbio(s),bio);
695 }
696 else
697 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
698 ret=1;
699err:
700 return(ret);
701 }
702
703int SSL_set_rfd(SSL *s,int fd)
704 {
705 int ret=0;
706 BIO *bio=NULL;
707
708 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
709 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
710 {
711 bio=BIO_new(BIO_s_socket());
712
713 if (bio == NULL)
714 {
715 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
716 goto err;
717 }
718 BIO_set_fd(bio,fd,BIO_NOCLOSE);
719 SSL_set_bio(s,bio,SSL_get_wbio(s));
720 }
721 else
722 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
723 ret=1;
724err:
725 return(ret);
726 }
727#endif
728
729
730/* return length of latest Finished message we sent, copy to 'buf' */
731size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
732 {
733 size_t ret = 0;
734
735 if (s->s3 != NULL)
736 {
737 ret = s->s3->tmp.finish_md_len;
738 if (count > ret)
739 count = ret;
740 memcpy(buf, s->s3->tmp.finish_md, count);
741 }
742 return ret;
743 }
744
745/* return length of latest Finished message we expected, copy to 'buf' */
746size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
747 {
748 size_t ret = 0;
749
750 if (s->s3 != NULL)
751 {
752 ret = s->s3->tmp.peer_finish_md_len;
753 if (count > ret)
754 count = ret;
755 memcpy(buf, s->s3->tmp.peer_finish_md, count);
756 }
757 return ret;
758 }
759
760
761int SSL_get_verify_mode(const SSL *s)
762 {
763 return(s->verify_mode);
764 }
765
766int SSL_get_verify_depth(const SSL *s)
767 {
768 return X509_VERIFY_PARAM_get_depth(s->param);
769 }
770
771int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *)
772 {
773 return(s->verify_callback);
774 }
775
776int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
777 {
778 return(ctx->verify_mode);
779 }
780
781int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
782 {
783 return X509_VERIFY_PARAM_get_depth(ctx->param);
784 }
785
786int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *)
787 {
788 return(ctx->default_verify_callback);
789 }
790
791void SSL_set_verify(SSL *s,int mode,
792 int (*callback)(int ok,X509_STORE_CTX *ctx))
793 {
794 s->verify_mode=mode;
795 if (callback != NULL)
796 s->verify_callback=callback;
797 }
798
799void SSL_set_verify_depth(SSL *s,int depth)
800 {
801 X509_VERIFY_PARAM_set_depth(s->param, depth);
802 }
803
804void SSL_set_read_ahead(SSL *s,int yes)
805 {
806 s->read_ahead=yes;
807 }
808
809int SSL_get_read_ahead(const SSL *s)
810 {
811 return(s->read_ahead);
812 }
813
814int SSL_pending(const SSL *s)
815 {
816 /* SSL_pending cannot work properly if read-ahead is enabled
817 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
818 * and it is impossible to fix since SSL_pending cannot report
819 * errors that may be observed while scanning the new data.
820 * (Note that SSL_pending() is often used as a boolean value,
821 * so we'd better not return -1.)
822 */
823 return(s->method->ssl_pending(s));
824 }
825
826X509 *SSL_get_peer_certificate(const SSL *s)
827 {
828 X509 *r;
829
830 if ((s == NULL) || (s->session == NULL))
831 r=NULL;
832 else
833 r=s->session->peer;
834
835 if (r == NULL) return(r);
836
837 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
838
839 return(r);
840 }
841
842STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
843 {
844 STACK_OF(X509) *r;
845
846 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
847 r=NULL;
848 else
849 r=s->session->sess_cert->cert_chain;
850
851 /* If we are a client, cert_chain includes the peer's own
852 * certificate; if we are a server, it does not. */
853
854 return(r);
855 }
856
857/* Now in theory, since the calling process own 't' it should be safe to
858 * modify. We need to be able to read f without being hassled */
859void SSL_copy_session_id(SSL *t,const SSL *f)
860 {
861 CERT *tmp;
862
863 /* Do we need to to SSL locking? */
864 SSL_set_session(t,SSL_get_session(f));
865
866 /* what if we are setup as SSLv2 but want to talk SSLv3 or
867 * vice-versa */
868 if (t->method != f->method)
869 {
870 t->method->ssl_free(t); /* cleanup current */
871 t->method=f->method; /* change method */
872 t->method->ssl_new(t); /* setup new */
873 }
874
875 tmp=t->cert;
876 if (f->cert != NULL)
877 {
878 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
879 t->cert=f->cert;
880 }
881 else
882 t->cert=NULL;
883 if (tmp != NULL) ssl_cert_free(tmp);
884 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
885 }
886
887/* Fix this so it checks all the valid key/cert options */
888int SSL_CTX_check_private_key(const SSL_CTX *ctx)
889 {
890 if ( (ctx == NULL) ||
891 (ctx->cert == NULL) ||
892 (ctx->cert->key->x509 == NULL))
893 {
894 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
895 return(0);
896 }
897 if (ctx->cert->key->privatekey == NULL)
898 {
899 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
900 return(0);
901 }
902 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
903 }
904
905/* Fix this function so that it takes an optional type parameter */
906int SSL_check_private_key(const SSL *ssl)
907 {
908 if (ssl == NULL)
909 {
910 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
911 return(0);
912 }
913 if (ssl->cert == NULL)
914 {
915 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
916 return 0;
917 }
918 if (ssl->cert->key->x509 == NULL)
919 {
920 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
921 return(0);
922 }
923 if (ssl->cert->key->privatekey == NULL)
924 {
925 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
926 return(0);
927 }
928 return(X509_check_private_key(ssl->cert->key->x509,
929 ssl->cert->key->privatekey));
930 }
931
932int SSL_accept(SSL *s)
933 {
934 if (s->handshake_func == 0)
935 /* Not properly initialized yet */
936 SSL_set_accept_state(s);
937
938 return(s->method->ssl_accept(s));
939 }
940
941int SSL_connect(SSL *s)
942 {
943 if (s->handshake_func == 0)
944 /* Not properly initialized yet */
945 SSL_set_connect_state(s);
946
947 return(s->method->ssl_connect(s));
948 }
949
950long SSL_get_default_timeout(const SSL *s)
951 {
952 return(s->method->get_timeout());
953 }
954
955int SSL_read(SSL *s,void *buf,int num)
956 {
957 if (s->handshake_func == 0)
958 {
959 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
960 return -1;
961 }
962
963 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
964 {
965 s->rwstate=SSL_NOTHING;
966 return(0);
967 }
968 return(s->method->ssl_read(s,buf,num));
969 }
970
971int SSL_peek(SSL *s,void *buf,int num)
972 {
973 if (s->handshake_func == 0)
974 {
975 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
976 return -1;
977 }
978
979 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
980 {
981 return(0);
982 }
983 return(s->method->ssl_peek(s,buf,num));
984 }
985
986int SSL_write(SSL *s,const void *buf,int num)
987 {
988 if (s->handshake_func == 0)
989 {
990 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
991 return -1;
992 }
993
994 if (s->shutdown & SSL_SENT_SHUTDOWN)
995 {
996 s->rwstate=SSL_NOTHING;
997 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
998 return(-1);
999 }
1000 return(s->method->ssl_write(s,buf,num));
1001 }
1002
1003int SSL_shutdown(SSL *s)
1004 {
1005 /* Note that this function behaves differently from what one might
1006 * expect. Return values are 0 for no success (yet),
1007 * 1 for success; but calling it once is usually not enough,
1008 * even if blocking I/O is used (see ssl3_shutdown).
1009 */
1010
1011 if (s->handshake_func == 0)
1012 {
1013 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1014 return -1;
1015 }
1016
1017 if ((s != NULL) && !SSL_in_init(s))
1018 return(s->method->ssl_shutdown(s));
1019 else
1020 return(1);
1021 }
1022
1023int SSL_renegotiate(SSL *s)
1024 {
1025 if (s->renegotiate == 0)
1026 s->renegotiate=1;
1027
1028 s->new_session=1;
1029
1030 return(s->method->ssl_renegotiate(s));
1031 }
1032
1033int SSL_renegotiate_abbreviated(SSL *s)
1034 {
1035 if (s->renegotiate == 0)
1036 s->renegotiate=1;
1037
1038 s->new_session=0;
1039
1040 return(s->method->ssl_renegotiate(s));
1041 }
1042
1043int SSL_renegotiate_pending(SSL *s)
1044 {
1045 /* becomes true when negotiation is requested;
1046 * false again once a handshake has finished */
1047 return (s->renegotiate != 0);
1048 }
1049
1050long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
1051 {
1052 long l;
1053
1054 switch (cmd)
1055 {
1056 case SSL_CTRL_GET_READ_AHEAD:
1057 return(s->read_ahead);
1058 case SSL_CTRL_SET_READ_AHEAD:
1059 l=s->read_ahead;
1060 s->read_ahead=larg;
1061 return(l);
1062
1063 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1064 s->msg_callback_arg = parg;
1065 return 1;
1066
1067 case SSL_CTRL_OPTIONS:
1068 return(s->options|=larg);
1069 case SSL_CTRL_CLEAR_OPTIONS:
1070 return(s->options&=~larg);
1071 case SSL_CTRL_MODE:
1072 return(s->mode|=larg);
1073 case SSL_CTRL_CLEAR_MODE:
1074 return(s->mode &=~larg);
1075 case SSL_CTRL_GET_MAX_CERT_LIST:
1076 return(s->max_cert_list);
1077 case SSL_CTRL_SET_MAX_CERT_LIST:
1078 l=s->max_cert_list;
1079 s->max_cert_list=larg;
1080 return(l);
1081 case SSL_CTRL_SET_MTU:
1082#ifndef OPENSSL_NO_DTLS1
1083 if (larg < (long)dtls1_min_mtu())
1084 return 0;
1085#endif
1086
1087 if (SSL_version(s) == DTLS1_VERSION ||
1088 SSL_version(s) == DTLS1_BAD_VER)
1089 {
1090 s->d1->mtu = larg;
1091 return larg;
1092 }
1093 return 0;
1094 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1095 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1096 return 0;
1097 s->max_send_fragment = larg;
1098 return 1;
1099 case SSL_CTRL_GET_RI_SUPPORT:
1100 if (s->s3)
1101 return s->s3->send_connection_binding;
1102 else return 0;
1103 default:
1104 return(s->method->ssl_ctrl(s,cmd,larg,parg));
1105 }
1106 }
1107
1108long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
1109 {
1110 switch(cmd)
1111 {
1112 case SSL_CTRL_SET_MSG_CALLBACK:
1113 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1114 return 1;
1115
1116 default:
1117 return(s->method->ssl_callback_ctrl(s,cmd,fp));
1118 }
1119 }
1120
1121LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1122 {
1123 return ctx->sessions;
1124 }
1125
1126long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
1127 {
1128 long l;
1129
1130 switch (cmd)
1131 {
1132 case SSL_CTRL_GET_READ_AHEAD:
1133 return(ctx->read_ahead);
1134 case SSL_CTRL_SET_READ_AHEAD:
1135 l=ctx->read_ahead;
1136 ctx->read_ahead=larg;
1137 return(l);
1138
1139 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1140 ctx->msg_callback_arg = parg;
1141 return 1;
1142
1143 case SSL_CTRL_GET_MAX_CERT_LIST:
1144 return(ctx->max_cert_list);
1145 case SSL_CTRL_SET_MAX_CERT_LIST:
1146 l=ctx->max_cert_list;
1147 ctx->max_cert_list=larg;
1148 return(l);
1149
1150 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1151 l=ctx->session_cache_size;
1152 ctx->session_cache_size=larg;
1153 return(l);
1154 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1155 return(ctx->session_cache_size);
1156 case SSL_CTRL_SET_SESS_CACHE_MODE:
1157 l=ctx->session_cache_mode;
1158 ctx->session_cache_mode=larg;
1159 return(l);
1160 case SSL_CTRL_GET_SESS_CACHE_MODE:
1161 return(ctx->session_cache_mode);
1162
1163 case SSL_CTRL_SESS_NUMBER:
1164 return(lh_SSL_SESSION_num_items(ctx->sessions));
1165 case SSL_CTRL_SESS_CONNECT:
1166 return(ctx->stats.sess_connect);
1167 case SSL_CTRL_SESS_CONNECT_GOOD:
1168 return(ctx->stats.sess_connect_good);
1169 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1170 return(ctx->stats.sess_connect_renegotiate);
1171 case SSL_CTRL_SESS_ACCEPT:
1172 return(ctx->stats.sess_accept);
1173 case SSL_CTRL_SESS_ACCEPT_GOOD:
1174 return(ctx->stats.sess_accept_good);
1175 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1176 return(ctx->stats.sess_accept_renegotiate);
1177 case SSL_CTRL_SESS_HIT:
1178 return(ctx->stats.sess_hit);
1179 case SSL_CTRL_SESS_CB_HIT:
1180 return(ctx->stats.sess_cb_hit);
1181 case SSL_CTRL_SESS_MISSES:
1182 return(ctx->stats.sess_miss);
1183 case SSL_CTRL_SESS_TIMEOUTS:
1184 return(ctx->stats.sess_timeout);
1185 case SSL_CTRL_SESS_CACHE_FULL:
1186 return(ctx->stats.sess_cache_full);
1187 case SSL_CTRL_OPTIONS:
1188 return(ctx->options|=larg);
1189 case SSL_CTRL_CLEAR_OPTIONS:
1190 return(ctx->options&=~larg);
1191 case SSL_CTRL_MODE:
1192 return(ctx->mode|=larg);
1193 case SSL_CTRL_CLEAR_MODE:
1194 return(ctx->mode&=~larg);
1195 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1196 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1197 return 0;
1198 ctx->max_send_fragment = larg;
1199 return 1;
1200 default:
1201 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
1202 }
1203 }
1204
1205long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
1206 {
1207 switch(cmd)
1208 {
1209 case SSL_CTRL_SET_MSG_CALLBACK:
1210 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1211 return 1;
1212
1213 default:
1214 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
1215 }
1216 }
1217
1218int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1219 {
1220 long l;
1221
1222 l=a->id-b->id;
1223 if (l == 0L)
1224 return(0);
1225 else
1226 return((l > 0)?1:-1);
1227 }
1228
1229int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1230 const SSL_CIPHER * const *bp)
1231 {
1232 long l;
1233
1234 l=(*ap)->id-(*bp)->id;
1235 if (l == 0L)
1236 return(0);
1237 else
1238 return((l > 0)?1:-1);
1239 }
1240
1241/** return a STACK of the ciphers available for the SSL and in order of
1242 * preference */
1243STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1244 {
1245 if (s != NULL)
1246 {
1247 if (s->cipher_list != NULL)
1248 {
1249 return(s->cipher_list);
1250 }
1251 else if ((s->ctx != NULL) &&
1252 (s->ctx->cipher_list != NULL))
1253 {
1254 return(s->ctx->cipher_list);
1255 }
1256 }
1257 return(NULL);
1258 }
1259
1260/** return a STACK of the ciphers available for the SSL and in order of
1261 * algorithm id */
1262STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1263 {
1264 if (s != NULL)
1265 {
1266 if (s->cipher_list_by_id != NULL)
1267 {
1268 return(s->cipher_list_by_id);
1269 }
1270 else if ((s->ctx != NULL) &&
1271 (s->ctx->cipher_list_by_id != NULL))
1272 {
1273 return(s->ctx->cipher_list_by_id);
1274 }
1275 }
1276 return(NULL);
1277 }
1278
1279/** The old interface to get the same thing as SSL_get_ciphers() */
1280const char *SSL_get_cipher_list(const SSL *s,int n)
1281 {
1282 SSL_CIPHER *c;
1283 STACK_OF(SSL_CIPHER) *sk;
1284
1285 if (s == NULL) return(NULL);
1286 sk=SSL_get_ciphers(s);
1287 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1288 return(NULL);
1289 c=sk_SSL_CIPHER_value(sk,n);
1290 if (c == NULL) return(NULL);
1291 return(c->name);
1292 }
1293
1294/** specify the ciphers to be used by default by the SSL_CTX */
1295int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1296 {
1297 STACK_OF(SSL_CIPHER) *sk;
1298
1299 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1300 &ctx->cipher_list_by_id,str);
1301 /* ssl_create_cipher_list may return an empty stack if it
1302 * was unable to find a cipher matching the given rule string
1303 * (for example if the rule string specifies a cipher which
1304 * has been disabled). This is not an error as far as
1305 * ssl_create_cipher_list is concerned, and hence
1306 * ctx->cipher_list and ctx->cipher_list_by_id has been
1307 * updated. */
1308 if (sk == NULL)
1309 return 0;
1310 else if (sk_SSL_CIPHER_num(sk) == 0)
1311 {
1312 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1313 return 0;
1314 }
1315 return 1;
1316 }
1317
1318/** specify the ciphers to be used by the SSL */
1319int SSL_set_cipher_list(SSL *s,const char *str)
1320 {
1321 STACK_OF(SSL_CIPHER) *sk;
1322
1323 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1324 &s->cipher_list_by_id,str);
1325 /* see comment in SSL_CTX_set_cipher_list */
1326 if (sk == NULL)
1327 return 0;
1328 else if (sk_SSL_CIPHER_num(sk) == 0)
1329 {
1330 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1331 return 0;
1332 }
1333 return 1;
1334 }
1335
1336/* works well for SSLv2, not so good for SSLv3 */
1337char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len)
1338 {
1339 char *end;
1340 STACK_OF(SSL_CIPHER) *sk;
1341 SSL_CIPHER *c;
1342 size_t curlen = 0;
1343 int i;
1344
1345 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1346 (len < 2))
1347 return(NULL);
1348
1349 sk=s->session->ciphers;
1350 buf[0] = '\0';
1351 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1352 {
1353 c=sk_SSL_CIPHER_value(sk,i);
1354 end = buf + curlen;
1355 if (strlcat(buf, c->name, len) >= len ||
1356 (curlen = strlcat(buf, ":", len)) >= len)
1357 {
1358 /* remove truncated cipher from list */
1359 *end = '\0';
1360 break;
1361 }
1362 }
1363 /* remove trailing colon */
1364 if ((end = strrchr(buf, ':')) != NULL)
1365 *end = '\0';
1366 return(buf);
1367 }
1368
1369int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
1370 int (*put_cb)(const SSL_CIPHER *, unsigned char *))
1371 {
1372 int i,j=0;
1373 SSL_CIPHER *c;
1374 unsigned char *q;
1375#ifndef OPENSSL_NO_KRB5
1376 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1377#endif /* OPENSSL_NO_KRB5 */
1378
1379 if (sk == NULL) return(0);
1380 q=p;
1381
1382 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1383 {
1384 c=sk_SSL_CIPHER_value(sk,i);
1385 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */
1386 if ((c->algorithm_ssl & SSL_TLSV1_2) &&
1387 (TLS1_get_client_version(s) < TLS1_2_VERSION))
1388 continue;
1389#ifndef OPENSSL_NO_KRB5
1390 if (((c->algorithm_mkey & SSL_kKRB5) || (c->algorithm_auth & SSL_aKRB5)) &&
1391 nokrb5)
1392 continue;
1393#endif /* OPENSSL_NO_KRB5 */
1394#ifndef OPENSSL_NO_PSK
1395 /* with PSK there must be client callback set */
1396 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK)) &&
1397 s->psk_client_callback == NULL)
1398 continue;
1399#endif /* OPENSSL_NO_PSK */
1400 j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p);
1401 p+=j;
1402 }
1403 /* If p == q, no ciphers and caller indicates an error. Otherwise
1404 * add SCSV if not renegotiating.
1405 */
1406 if (p != q && !s->renegotiate)
1407 {
1408 static SSL_CIPHER scsv =
1409 {
1410 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1411 };
1412 j = put_cb ? put_cb(&scsv,p) : ssl_put_cipher_by_char(s,&scsv,p);
1413 p+=j;
1414#ifdef OPENSSL_RI_DEBUG
1415 fprintf(stderr, "SCSV sent by client\n");
1416#endif
1417 }
1418
1419 return(p-q);
1420 }
1421
1422STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1423 STACK_OF(SSL_CIPHER) **skp)
1424 {
1425 const SSL_CIPHER *c;
1426 STACK_OF(SSL_CIPHER) *sk;
1427 int i,n;
1428 if (s->s3)
1429 s->s3->send_connection_binding = 0;
1430
1431 n=ssl_put_cipher_by_char(s,NULL,NULL);
1432 if ((num%n) != 0)
1433 {
1434 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1435 return(NULL);
1436 }
1437 if ((skp == NULL) || (*skp == NULL))
1438 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1439 else
1440 {
1441 sk= *skp;
1442 sk_SSL_CIPHER_zero(sk);
1443 }
1444
1445 for (i=0; i<num; i+=n)
1446 {
1447 /* Check for SCSV */
1448 if (s->s3 && (n != 3 || !p[0]) &&
1449 (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1450 (p[n-1] == (SSL3_CK_SCSV & 0xff)))
1451 {
1452 /* SCSV fatal if renegotiating */
1453 if (s->renegotiate)
1454 {
1455 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1456 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1457 goto err;
1458 }
1459 s->s3->send_connection_binding = 1;
1460 p += n;
1461#ifdef OPENSSL_RI_DEBUG
1462 fprintf(stderr, "SCSV received by server\n");
1463#endif
1464 continue;
1465 }
1466
1467 c=ssl_get_cipher_by_char(s,p);
1468 p+=n;
1469 if (c != NULL)
1470 {
1471 if (!sk_SSL_CIPHER_push(sk,c))
1472 {
1473 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1474 goto err;
1475 }
1476 }
1477 }
1478
1479 if (skp != NULL)
1480 *skp=sk;
1481 return(sk);
1482err:
1483 if ((skp == NULL) || (*skp == NULL))
1484 sk_SSL_CIPHER_free(sk);
1485 return(NULL);
1486 }
1487
1488
1489#ifndef OPENSSL_NO_TLSEXT
1490/** return a servername extension value if provided in Client Hello, or NULL.
1491 * So far, only host_name types are defined (RFC 3546).
1492 */
1493
1494const char *SSL_get_servername(const SSL *s, const int type)
1495 {
1496 if (type != TLSEXT_NAMETYPE_host_name)
1497 return NULL;
1498
1499 return s->session && !s->tlsext_hostname ?
1500 s->session->tlsext_hostname :
1501 s->tlsext_hostname;
1502 }
1503
1504int SSL_get_servername_type(const SSL *s)
1505 {
1506 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname))
1507 return TLSEXT_NAMETYPE_host_name;
1508 return -1;
1509 }
1510
1511# ifndef OPENSSL_NO_NEXTPROTONEG
1512/* SSL_select_next_proto implements the standard protocol selection. It is
1513 * expected that this function is called from the callback set by
1514 * SSL_CTX_set_next_proto_select_cb.
1515 *
1516 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte
1517 * strings. The length byte itself is not included in the length. A byte
1518 * string of length 0 is invalid. No byte string may be truncated.
1519 *
1520 * The current, but experimental algorithm for selecting the protocol is:
1521 *
1522 * 1) If the server doesn't support NPN then this is indicated to the
1523 * callback. In this case, the client application has to abort the connection
1524 * or have a default application level protocol.
1525 *
1526 * 2) If the server supports NPN, but advertises an empty list then the
1527 * client selects the first protcol in its list, but indicates via the
1528 * API that this fallback case was enacted.
1529 *
1530 * 3) Otherwise, the client finds the first protocol in the server's list
1531 * that it supports and selects this protocol. This is because it's
1532 * assumed that the server has better information about which protocol
1533 * a client should use.
1534 *
1535 * 4) If the client doesn't support any of the server's advertised
1536 * protocols, then this is treated the same as case 2.
1537 *
1538 * It returns either
1539 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or
1540 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1541 */
1542int SSL_select_next_proto(unsigned char **out, unsigned char *outlen, const unsigned char *server, unsigned int server_len, const unsigned char *client, unsigned int client_len)
1543 {
1544 unsigned int i, j;
1545 const unsigned char *result;
1546 int status = OPENSSL_NPN_UNSUPPORTED;
1547
1548 /* For each protocol in server preference order, see if we support it. */
1549 for (i = 0; i < server_len; )
1550 {
1551 for (j = 0; j < client_len; )
1552 {
1553 if (server[i] == client[j] &&
1554 memcmp(&server[i+1], &client[j+1], server[i]) == 0)
1555 {
1556 /* We found a match */
1557 result = &server[i];
1558 status = OPENSSL_NPN_NEGOTIATED;
1559 goto found;
1560 }
1561 j += client[j];
1562 j++;
1563 }
1564 i += server[i];
1565 i++;
1566 }
1567
1568 /* There's no overlap between our protocols and the server's list. */
1569 result = client;
1570 status = OPENSSL_NPN_NO_OVERLAP;
1571
1572 found:
1573 *out = (unsigned char *) result + 1;
1574 *outlen = result[0];
1575 return status;
1576 }
1577
1578/* SSL_get0_next_proto_negotiated sets *data and *len to point to the client's
1579 * requested protocol for this connection and returns 0. If the client didn't
1580 * request any protocol, then *data is set to NULL.
1581 *
1582 * Note that the client can request any protocol it chooses. The value returned
1583 * from this function need not be a member of the list of supported protocols
1584 * provided by the callback.
1585 */
1586void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, unsigned *len)
1587 {
1588 *data = s->next_proto_negotiated;
1589 if (!*data) {
1590 *len = 0;
1591 } else {
1592 *len = s->next_proto_negotiated_len;
1593 }
1594}
1595
1596/* SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a
1597 * TLS server needs a list of supported protocols for Next Protocol
1598 * Negotiation. The returned list must be in wire format. The list is returned
1599 * by setting |out| to point to it and |outlen| to its length. This memory will
1600 * not be modified, but one should assume that the SSL* keeps a reference to
1601 * it.
1602 *
1603 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. Otherwise, no
1604 * such extension will be included in the ServerHello. */
1605void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, const unsigned char **out, unsigned int *outlen, void *arg), void *arg)
1606 {
1607 ctx->next_protos_advertised_cb = cb;
1608 ctx->next_protos_advertised_cb_arg = arg;
1609 }
1610
1611/* SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1612 * client needs to select a protocol from the server's provided list. |out|
1613 * must be set to point to the selected protocol (which may be within |in|).
1614 * The length of the protocol name must be written into |outlen|. The server's
1615 * advertised protocols are provided in |in| and |inlen|. The callback can
1616 * assume that |in| is syntactically valid.
1617 *
1618 * The client must select a protocol. It is fatal to the connection if this
1619 * callback returns a value other than SSL_TLSEXT_ERR_OK.
1620 */
1621void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, unsigned char **out, unsigned char *outlen, const unsigned char *in, unsigned int inlen, void *arg), void *arg)
1622 {
1623 ctx->next_proto_select_cb = cb;
1624 ctx->next_proto_select_cb_arg = arg;
1625 }
1626# endif
1627#endif
1628
1629int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1630 const char *label, size_t llen, const unsigned char *p, size_t plen,
1631 int use_context)
1632 {
1633 if (s->version < TLS1_VERSION)
1634 return -1;
1635
1636 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1637 llen, p, plen,
1638 use_context);
1639 }
1640
1641static unsigned long ssl_session_hash(const SSL_SESSION *a)
1642 {
1643 unsigned long l;
1644
1645 l=(unsigned long)
1646 ((unsigned int) a->session_id[0] )|
1647 ((unsigned int) a->session_id[1]<< 8L)|
1648 ((unsigned long)a->session_id[2]<<16L)|
1649 ((unsigned long)a->session_id[3]<<24L);
1650 return(l);
1651 }
1652
1653/* NB: If this function (or indeed the hash function which uses a sort of
1654 * coarser function than this one) is changed, ensure
1655 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1656 * able to construct an SSL_SESSION that will collide with any existing session
1657 * with a matching session ID. */
1658static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
1659 {
1660 if (a->ssl_version != b->ssl_version)
1661 return(1);
1662 if (a->session_id_length != b->session_id_length)
1663 return(1);
1664 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1665 }
1666
1667/* These wrapper functions should remain rather than redeclaring
1668 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1669 * variable. The reason is that the functions aren't static, they're exposed via
1670 * ssl.h. */
1671static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1672static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1673
1674SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1675 {
1676 SSL_CTX *ret=NULL;
1677
1678 if (meth == NULL)
1679 {
1680 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1681 return(NULL);
1682 }
1683
1684#ifdef OPENSSL_FIPS
1685 if (FIPS_mode() && (meth->version < TLS1_VERSION))
1686 {
1687 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1688 return NULL;
1689 }
1690#endif
1691
1692 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1693 {
1694 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1695 goto err;
1696 }
1697 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1698 if (ret == NULL)
1699 goto err;
1700
1701 memset(ret,0,sizeof(SSL_CTX));
1702
1703 ret->method=meth;
1704
1705 ret->cert_store=NULL;
1706 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1707 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1708 ret->session_cache_head=NULL;
1709 ret->session_cache_tail=NULL;
1710
1711 /* We take the system default */
1712 ret->session_timeout=meth->get_timeout();
1713
1714 ret->new_session_cb=0;
1715 ret->remove_session_cb=0;
1716 ret->get_session_cb=0;
1717 ret->generate_session_id=0;
1718
1719 memset((char *)&ret->stats,0,sizeof(ret->stats));
1720
1721 ret->references=1;
1722 ret->quiet_shutdown=0;
1723
1724/* ret->cipher=NULL;*/
1725/* ret->s2->challenge=NULL;
1726 ret->master_key=NULL;
1727 ret->key_arg=NULL;
1728 ret->s2->conn_id=NULL; */
1729
1730 ret->info_callback=NULL;
1731
1732 ret->app_verify_callback=0;
1733 ret->app_verify_arg=NULL;
1734
1735 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1736 ret->read_ahead=0;
1737 ret->msg_callback=0;
1738 ret->msg_callback_arg=NULL;
1739 ret->verify_mode=SSL_VERIFY_NONE;
1740#if 0
1741 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1742#endif
1743 ret->sid_ctx_length=0;
1744 ret->default_verify_callback=NULL;
1745 if ((ret->cert=ssl_cert_new()) == NULL)
1746 goto err;
1747
1748 ret->default_passwd_callback=0;
1749 ret->default_passwd_callback_userdata=NULL;
1750 ret->client_cert_cb=0;
1751 ret->app_gen_cookie_cb=0;
1752 ret->app_verify_cookie_cb=0;
1753
1754 ret->sessions=lh_SSL_SESSION_new();
1755 if (ret->sessions == NULL) goto err;
1756 ret->cert_store=X509_STORE_new();
1757 if (ret->cert_store == NULL) goto err;
1758
1759 ssl_create_cipher_list(ret->method,
1760 &ret->cipher_list,&ret->cipher_list_by_id,
1761 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
1762 if (ret->cipher_list == NULL
1763 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1764 {
1765 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1766 goto err2;
1767 }
1768
1769 ret->param = X509_VERIFY_PARAM_new();
1770 if (!ret->param)
1771 goto err;
1772
1773 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1774 {
1775 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1776 goto err2;
1777 }
1778 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1779 {
1780 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1781 goto err2;
1782 }
1783 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1784 {
1785 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1786 goto err2;
1787 }
1788
1789 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1790 goto err;
1791
1792 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1793
1794 ret->extra_certs=NULL;
1795 ret->comp_methods=SSL_COMP_get_compression_methods();
1796
1797 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1798
1799#ifndef OPENSSL_NO_TLSEXT
1800 ret->tlsext_servername_callback = 0;
1801 ret->tlsext_servername_arg = NULL;
1802 /* Setup RFC4507 ticket keys */
1803 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1804 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1805 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1806 ret->options |= SSL_OP_NO_TICKET;
1807
1808 ret->tlsext_status_cb = 0;
1809 ret->tlsext_status_arg = NULL;
1810
1811# ifndef OPENSSL_NO_NEXTPROTONEG
1812 ret->next_protos_advertised_cb = 0;
1813 ret->next_proto_select_cb = 0;
1814# endif
1815#endif
1816#ifndef OPENSSL_NO_PSK
1817 ret->psk_identity_hint=NULL;
1818 ret->psk_client_callback=NULL;
1819 ret->psk_server_callback=NULL;
1820#endif
1821#ifndef OPENSSL_NO_SRP
1822 SSL_CTX_SRP_CTX_init(ret);
1823#endif
1824#ifndef OPENSSL_NO_BUF_FREELISTS
1825 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT;
1826 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1827 if (!ret->rbuf_freelist)
1828 goto err;
1829 ret->rbuf_freelist->chunklen = 0;
1830 ret->rbuf_freelist->len = 0;
1831 ret->rbuf_freelist->head = NULL;
1832 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1833 if (!ret->wbuf_freelist)
1834 {
1835 OPENSSL_free(ret->rbuf_freelist);
1836 goto err;
1837 }
1838 ret->wbuf_freelist->chunklen = 0;
1839 ret->wbuf_freelist->len = 0;
1840 ret->wbuf_freelist->head = NULL;
1841#endif
1842#ifndef OPENSSL_NO_ENGINE
1843 ret->client_cert_engine = NULL;
1844#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
1845#define eng_strx(x) #x
1846#define eng_str(x) eng_strx(x)
1847 /* Use specific client engine automatically... ignore errors */
1848 {
1849 ENGINE *eng;
1850 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1851 if (!eng)
1852 {
1853 ERR_clear_error();
1854 ENGINE_load_builtin_engines();
1855 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1856 }
1857 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
1858 ERR_clear_error();
1859 }
1860#endif
1861#endif
1862 /* Default is to connect to non-RI servers. When RI is more widely
1863 * deployed might change this.
1864 */
1865 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
1866
1867 return(ret);
1868err:
1869 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1870err2:
1871 if (ret != NULL) SSL_CTX_free(ret);
1872 return(NULL);
1873 }
1874
1875#if 0
1876static void SSL_COMP_free(SSL_COMP *comp)
1877 { OPENSSL_free(comp); }
1878#endif
1879
1880#ifndef OPENSSL_NO_BUF_FREELISTS
1881static void
1882ssl_buf_freelist_free(SSL3_BUF_FREELIST *list)
1883 {
1884 SSL3_BUF_FREELIST_ENTRY *ent, *next;
1885 for (ent = list->head; ent; ent = next)
1886 {
1887 next = ent->next;
1888 OPENSSL_free(ent);
1889 }
1890 OPENSSL_free(list);
1891 }
1892#endif
1893
1894void SSL_CTX_free(SSL_CTX *a)
1895 {
1896 int i;
1897
1898 if (a == NULL) return;
1899
1900 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1901#ifdef REF_PRINT
1902 REF_PRINT("SSL_CTX",a);
1903#endif
1904 if (i > 0) return;
1905#ifdef REF_CHECK
1906 if (i < 0)
1907 {
1908 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1909 abort(); /* ok */
1910 }
1911#endif
1912
1913 if (a->param)
1914 X509_VERIFY_PARAM_free(a->param);
1915
1916 /*
1917 * Free internal session cache. However: the remove_cb() may reference
1918 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1919 * after the sessions were flushed.
1920 * As the ex_data handling routines might also touch the session cache,
1921 * the most secure solution seems to be: empty (flush) the cache, then
1922 * free ex_data, then finally free the cache.
1923 * (See ticket [openssl.org #212].)
1924 */
1925 if (a->sessions != NULL)
1926 SSL_CTX_flush_sessions(a,0);
1927
1928 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1929
1930 if (a->sessions != NULL)
1931 lh_SSL_SESSION_free(a->sessions);
1932
1933 if (a->cert_store != NULL)
1934 X509_STORE_free(a->cert_store);
1935 if (a->cipher_list != NULL)
1936 sk_SSL_CIPHER_free(a->cipher_list);
1937 if (a->cipher_list_by_id != NULL)
1938 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1939 if (a->cert != NULL)
1940 ssl_cert_free(a->cert);
1941 if (a->client_CA != NULL)
1942 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1943 if (a->extra_certs != NULL)
1944 sk_X509_pop_free(a->extra_certs,X509_free);
1945#if 0 /* This should never be done, since it removes a global database */
1946 if (a->comp_methods != NULL)
1947 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1948#else
1949 a->comp_methods = NULL;
1950#endif
1951
1952 if (a->srtp_profiles)
1953 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
1954
1955#ifndef OPENSSL_NO_PSK
1956 if (a->psk_identity_hint)
1957 OPENSSL_free(a->psk_identity_hint);
1958#endif
1959#ifndef OPENSSL_NO_SRP
1960 SSL_CTX_SRP_CTX_free(a);
1961#endif
1962#ifndef OPENSSL_NO_ENGINE
1963 if (a->client_cert_engine)
1964 ENGINE_finish(a->client_cert_engine);
1965#endif
1966
1967#ifndef OPENSSL_NO_BUF_FREELISTS
1968 if (a->wbuf_freelist)
1969 ssl_buf_freelist_free(a->wbuf_freelist);
1970 if (a->rbuf_freelist)
1971 ssl_buf_freelist_free(a->rbuf_freelist);
1972#endif
1973
1974 OPENSSL_free(a);
1975 }
1976
1977void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1978 {
1979 ctx->default_passwd_callback=cb;
1980 }
1981
1982void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1983 {
1984 ctx->default_passwd_callback_userdata=u;
1985 }
1986
1987void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
1988 {
1989 ctx->app_verify_callback=cb;
1990 ctx->app_verify_arg=arg;
1991 }
1992
1993void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1994 {
1995 ctx->verify_mode=mode;
1996 ctx->default_verify_callback=cb;
1997 }
1998
1999void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
2000 {
2001 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2002 }
2003
2004void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2005 {
2006 CERT_PKEY *cpk;
2007 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
2008 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
2009 int rsa_tmp_export,dh_tmp_export,kl;
2010 unsigned long mask_k,mask_a,emask_k,emask_a;
2011 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size;
2012#ifndef OPENSSL_NO_ECDH
2013 int have_ecdh_tmp;
2014#endif
2015 X509 *x = NULL;
2016 EVP_PKEY *ecc_pkey = NULL;
2017 int signature_nid = 0, pk_nid = 0, md_nid = 0;
2018
2019 if (c == NULL) return;
2020
2021 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
2022
2023#ifndef OPENSSL_NO_RSA
2024 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
2025 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
2026 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
2027#else
2028 rsa_tmp=rsa_tmp_export=0;
2029#endif
2030#ifndef OPENSSL_NO_DH
2031 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
2032 dh_tmp_export=(c->dh_tmp_cb != NULL ||
2033 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
2034#else
2035 dh_tmp=dh_tmp_export=0;
2036#endif
2037
2038#ifndef OPENSSL_NO_ECDH
2039 have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL);
2040#endif
2041 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
2042 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
2043 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2044 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2045 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
2046 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2047 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
2048 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
2049 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
2050 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2051 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
2052/* FIX THIS EAY EAY EAY */
2053 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
2054 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2055 cpk= &(c->pkeys[SSL_PKEY_ECC]);
2056 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL);
2057 mask_k=0;
2058 mask_a=0;
2059 emask_k=0;
2060 emask_a=0;
2061
2062
2063
2064#ifdef CIPHER_DEBUG
2065 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2066 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp,
2067 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
2068#endif
2069
2070 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2071 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
2072 mask_k |= SSL_kGOST;
2073 mask_a |= SSL_aGOST01;
2074 }
2075 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
2076 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
2077 mask_k |= SSL_kGOST;
2078 mask_a |= SSL_aGOST94;
2079 }
2080
2081 if (rsa_enc || (rsa_tmp && rsa_sign))
2082 mask_k|=SSL_kRSA;
2083 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2084 emask_k|=SSL_kRSA;
2085
2086#if 0
2087 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
2088 if ( (dh_tmp || dh_rsa || dh_dsa) &&
2089 (rsa_enc || rsa_sign || dsa_sign))
2090 mask_k|=SSL_kEDH;
2091 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
2092 (rsa_enc || rsa_sign || dsa_sign))
2093 emask_k|=SSL_kEDH;
2094#endif
2095
2096 if (dh_tmp_export)
2097 emask_k|=SSL_kEDH;
2098
2099 if (dh_tmp)
2100 mask_k|=SSL_kEDH;
2101
2102 if (dh_rsa) mask_k|=SSL_kDHr;
2103 if (dh_rsa_export) emask_k|=SSL_kDHr;
2104
2105 if (dh_dsa) mask_k|=SSL_kDHd;
2106 if (dh_dsa_export) emask_k|=SSL_kDHd;
2107
2108 if (rsa_enc || rsa_sign)
2109 {
2110 mask_a|=SSL_aRSA;
2111 emask_a|=SSL_aRSA;
2112 }
2113
2114 if (dsa_sign)
2115 {
2116 mask_a|=SSL_aDSS;
2117 emask_a|=SSL_aDSS;
2118 }
2119
2120 mask_a|=SSL_aNULL;
2121 emask_a|=SSL_aNULL;
2122
2123#ifndef OPENSSL_NO_KRB5
2124 mask_k|=SSL_kKRB5;
2125 mask_a|=SSL_aKRB5;
2126 emask_k|=SSL_kKRB5;
2127 emask_a|=SSL_aKRB5;
2128#endif
2129
2130 /* An ECC certificate may be usable for ECDH and/or
2131 * ECDSA cipher suites depending on the key usage extension.
2132 */
2133 if (have_ecc_cert)
2134 {
2135 /* This call populates extension flags (ex_flags) */
2136 x = (c->pkeys[SSL_PKEY_ECC]).x509;
2137 X509_check_purpose(x, -1, 0);
2138 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2139 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
2140 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2141 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
2142 ecc_pkey = X509_get_pubkey(x);
2143 ecc_pkey_size = (ecc_pkey != NULL) ?
2144 EVP_PKEY_bits(ecc_pkey) : 0;
2145 EVP_PKEY_free(ecc_pkey);
2146 if ((x->sig_alg) && (x->sig_alg->algorithm))
2147 {
2148 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2149 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2150 }
2151#ifndef OPENSSL_NO_ECDH
2152 if (ecdh_ok)
2153 {
2154
2155 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa)
2156 {
2157 mask_k|=SSL_kECDHr;
2158 mask_a|=SSL_aECDH;
2159 if (ecc_pkey_size <= 163)
2160 {
2161 emask_k|=SSL_kECDHr;
2162 emask_a|=SSL_aECDH;
2163 }
2164 }
2165
2166 if (pk_nid == NID_X9_62_id_ecPublicKey)
2167 {
2168 mask_k|=SSL_kECDHe;
2169 mask_a|=SSL_aECDH;
2170 if (ecc_pkey_size <= 163)
2171 {
2172 emask_k|=SSL_kECDHe;
2173 emask_a|=SSL_aECDH;
2174 }
2175 }
2176 }
2177#endif
2178#ifndef OPENSSL_NO_ECDSA
2179 if (ecdsa_ok)
2180 {
2181 mask_a|=SSL_aECDSA;
2182 emask_a|=SSL_aECDSA;
2183 }
2184#endif
2185 }
2186
2187#ifndef OPENSSL_NO_ECDH
2188 if (have_ecdh_tmp)
2189 {
2190 mask_k|=SSL_kEECDH;
2191 emask_k|=SSL_kEECDH;
2192 }
2193#endif
2194
2195#ifndef OPENSSL_NO_PSK
2196 mask_k |= SSL_kPSK;
2197 mask_a |= SSL_aPSK;
2198 emask_k |= SSL_kPSK;
2199 emask_a |= SSL_aPSK;
2200#endif
2201
2202 c->mask_k=mask_k;
2203 c->mask_a=mask_a;
2204 c->export_mask_k=emask_k;
2205 c->export_mask_a=emask_a;
2206 c->valid=1;
2207 }
2208
2209/* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2210#define ku_reject(x, usage) \
2211 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2212
2213#ifndef OPENSSL_NO_EC
2214
2215int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2216 {
2217 unsigned long alg_k, alg_a;
2218 EVP_PKEY *pkey = NULL;
2219 int keysize = 0;
2220 int signature_nid = 0, md_nid = 0, pk_nid = 0;
2221 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2222
2223 alg_k = cs->algorithm_mkey;
2224 alg_a = cs->algorithm_auth;
2225
2226 if (SSL_C_IS_EXPORT(cs))
2227 {
2228 /* ECDH key length in export ciphers must be <= 163 bits */
2229 pkey = X509_get_pubkey(x);
2230 if (pkey == NULL) return 0;
2231 keysize = EVP_PKEY_bits(pkey);
2232 EVP_PKEY_free(pkey);
2233 if (keysize > 163) return 0;
2234 }
2235
2236 /* This call populates the ex_flags field correctly */
2237 X509_check_purpose(x, -1, 0);
2238 if ((x->sig_alg) && (x->sig_alg->algorithm))
2239 {
2240 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2241 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2242 }
2243 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr)
2244 {
2245 /* key usage, if present, must allow key agreement */
2246 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT))
2247 {
2248 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2249 return 0;
2250 }
2251 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION)
2252 {
2253 /* signature alg must be ECDSA */
2254 if (pk_nid != NID_X9_62_id_ecPublicKey)
2255 {
2256 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2257 return 0;
2258 }
2259 }
2260 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION)
2261 {
2262 /* signature alg must be RSA */
2263
2264 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa)
2265 {
2266 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2267 return 0;
2268 }
2269 }
2270 }
2271 if (alg_a & SSL_aECDSA)
2272 {
2273 /* key usage, if present, must allow signing */
2274 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE))
2275 {
2276 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2277 return 0;
2278 }
2279 }
2280
2281 return 1; /* all checks are ok */
2282 }
2283
2284#endif
2285
2286/* THIS NEEDS CLEANING UP */
2287X509 *ssl_get_server_send_cert(SSL *s)
2288 {
2289 unsigned long alg_k,alg_a;
2290 CERT *c;
2291 int i;
2292
2293 c=s->cert;
2294 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2295
2296 alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
2297 alg_a = s->s3->tmp.new_cipher->algorithm_auth;
2298
2299 if (alg_k & (SSL_kECDHr|SSL_kECDHe))
2300 {
2301 /* we don't need to look at SSL_kEECDH
2302 * since no certificate is needed for
2303 * anon ECDH and for authenticated
2304 * EECDH, the check for the auth
2305 * algorithm will set i correctly
2306 * NOTE: For ECDH-RSA, we need an ECC
2307 * not an RSA cert but for EECDH-RSA
2308 * we need an RSA cert. Placing the
2309 * checks for SSL_kECDH before RSA
2310 * checks ensures the correct cert is chosen.
2311 */
2312 i=SSL_PKEY_ECC;
2313 }
2314 else if (alg_a & SSL_aECDSA)
2315 {
2316 i=SSL_PKEY_ECC;
2317 }
2318 else if (alg_k & SSL_kDHr)
2319 i=SSL_PKEY_DH_RSA;
2320 else if (alg_k & SSL_kDHd)
2321 i=SSL_PKEY_DH_DSA;
2322 else if (alg_a & SSL_aDSS)
2323 i=SSL_PKEY_DSA_SIGN;
2324 else if (alg_a & SSL_aRSA)
2325 {
2326 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
2327 i=SSL_PKEY_RSA_SIGN;
2328 else
2329 i=SSL_PKEY_RSA_ENC;
2330 }
2331 else if (alg_a & SSL_aKRB5)
2332 {
2333 /* VRS something else here? */
2334 return(NULL);
2335 }
2336 else if (alg_a & SSL_aGOST94)
2337 i=SSL_PKEY_GOST94;
2338 else if (alg_a & SSL_aGOST01)
2339 i=SSL_PKEY_GOST01;
2340 else /* if (alg_a & SSL_aNULL) */
2341 {
2342 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR);
2343 return(NULL);
2344 }
2345 if (c->pkeys[i].x509 == NULL) return(NULL);
2346
2347 return(c->pkeys[i].x509);
2348 }
2349
2350EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher, const EVP_MD **pmd)
2351 {
2352 unsigned long alg_a;
2353 CERT *c;
2354 int idx = -1;
2355
2356 alg_a = cipher->algorithm_auth;
2357 c=s->cert;
2358
2359 if ((alg_a & SSL_aDSS) &&
2360 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2361 idx = SSL_PKEY_DSA_SIGN;
2362 else if (alg_a & SSL_aRSA)
2363 {
2364 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2365 idx = SSL_PKEY_RSA_SIGN;
2366 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2367 idx = SSL_PKEY_RSA_ENC;
2368 }
2369 else if ((alg_a & SSL_aECDSA) &&
2370 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2371 idx = SSL_PKEY_ECC;
2372 if (idx == -1)
2373 {
2374 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
2375 return(NULL);
2376 }
2377 if (pmd)
2378 *pmd = c->pkeys[idx].digest;
2379 return c->pkeys[idx].privatekey;
2380 }
2381
2382void ssl_update_cache(SSL *s,int mode)
2383 {
2384 int i;
2385
2386 /* If the session_id_length is 0, we are not supposed to cache it,
2387 * and it would be rather hard to do anyway :-) */
2388 if (s->session->session_id_length == 0) return;
2389
2390 i=s->session_ctx->session_cache_mode;
2391 if ((i & mode) && (!s->hit)
2392 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2393 || SSL_CTX_add_session(s->session_ctx,s->session))
2394 && (s->session_ctx->new_session_cb != NULL))
2395 {
2396 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
2397 if (!s->session_ctx->new_session_cb(s,s->session))
2398 SSL_SESSION_free(s->session);
2399 }
2400
2401 /* auto flush every 255 connections */
2402 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
2403 ((i & mode) == mode))
2404 {
2405 if ( (((mode & SSL_SESS_CACHE_CLIENT)
2406 ?s->session_ctx->stats.sess_connect_good
2407 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff)
2408 {
2409 SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL));
2410 }
2411 }
2412 }
2413
2414const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2415 {
2416 return(s->method);
2417 }
2418
2419int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2420 {
2421 int conn= -1;
2422 int ret=1;
2423
2424 if (s->method != meth)
2425 {
2426 if (s->handshake_func != NULL)
2427 conn=(s->handshake_func == s->method->ssl_connect);
2428
2429 if (s->method->version == meth->version)
2430 s->method=meth;
2431 else
2432 {
2433 s->method->ssl_free(s);
2434 s->method=meth;
2435 ret=s->method->ssl_new(s);
2436 }
2437
2438 if (conn == 1)
2439 s->handshake_func=meth->ssl_connect;
2440 else if (conn == 0)
2441 s->handshake_func=meth->ssl_accept;
2442 }
2443 return(ret);
2444 }
2445
2446int SSL_get_error(const SSL *s,int i)
2447 {
2448 int reason;
2449 unsigned long l;
2450 BIO *bio;
2451
2452 if (i > 0) return(SSL_ERROR_NONE);
2453
2454 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
2455 * etc, where we do encode the error */
2456 if ((l=ERR_peek_error()) != 0)
2457 {
2458 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2459 return(SSL_ERROR_SYSCALL);
2460 else
2461 return(SSL_ERROR_SSL);
2462 }
2463
2464 if ((i < 0) && SSL_want_read(s))
2465 {
2466 bio=SSL_get_rbio(s);
2467 if (BIO_should_read(bio))
2468 return(SSL_ERROR_WANT_READ);
2469 else if (BIO_should_write(bio))
2470 /* This one doesn't make too much sense ... We never try
2471 * to write to the rbio, and an application program where
2472 * rbio and wbio are separate couldn't even know what it
2473 * should wait for.
2474 * However if we ever set s->rwstate incorrectly
2475 * (so that we have SSL_want_read(s) instead of
2476 * SSL_want_write(s)) and rbio and wbio *are* the same,
2477 * this test works around that bug; so it might be safer
2478 * to keep it. */
2479 return(SSL_ERROR_WANT_WRITE);
2480 else if (BIO_should_io_special(bio))
2481 {
2482 reason=BIO_get_retry_reason(bio);
2483 if (reason == BIO_RR_CONNECT)
2484 return(SSL_ERROR_WANT_CONNECT);
2485 else if (reason == BIO_RR_ACCEPT)
2486 return(SSL_ERROR_WANT_ACCEPT);
2487 else
2488 return(SSL_ERROR_SYSCALL); /* unknown */
2489 }
2490 }
2491
2492 if ((i < 0) && SSL_want_write(s))
2493 {
2494 bio=SSL_get_wbio(s);
2495 if (BIO_should_write(bio))
2496 return(SSL_ERROR_WANT_WRITE);
2497 else if (BIO_should_read(bio))
2498 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
2499 return(SSL_ERROR_WANT_READ);
2500 else if (BIO_should_io_special(bio))
2501 {
2502 reason=BIO_get_retry_reason(bio);
2503 if (reason == BIO_RR_CONNECT)
2504 return(SSL_ERROR_WANT_CONNECT);
2505 else if (reason == BIO_RR_ACCEPT)
2506 return(SSL_ERROR_WANT_ACCEPT);
2507 else
2508 return(SSL_ERROR_SYSCALL);
2509 }
2510 }
2511 if ((i < 0) && SSL_want_x509_lookup(s))
2512 {
2513 return(SSL_ERROR_WANT_X509_LOOKUP);
2514 }
2515
2516 if (i == 0)
2517 {
2518 if (s->version == SSL2_VERSION)
2519 {
2520 /* assume it is the socket being closed */
2521 return(SSL_ERROR_ZERO_RETURN);
2522 }
2523 else
2524 {
2525 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2526 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2527 return(SSL_ERROR_ZERO_RETURN);
2528 }
2529 }
2530 return(SSL_ERROR_SYSCALL);
2531 }
2532
2533int SSL_do_handshake(SSL *s)
2534 {
2535 int ret=1;
2536
2537 if (s->handshake_func == NULL)
2538 {
2539 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
2540 return(-1);
2541 }
2542
2543 s->method->ssl_renegotiate_check(s);
2544
2545 if (SSL_in_init(s) || SSL_in_before(s))
2546 {
2547 ret=s->handshake_func(s);
2548 }
2549 return(ret);
2550 }
2551
2552/* For the next 2 functions, SSL_clear() sets shutdown and so
2553 * one of these calls will reset it */
2554void SSL_set_accept_state(SSL *s)
2555 {
2556 s->server=1;
2557 s->shutdown=0;
2558 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
2559 s->handshake_func=s->method->ssl_accept;
2560 /* clear the current cipher */
2561 ssl_clear_cipher_ctx(s);
2562 ssl_clear_hash_ctx(&s->read_hash);
2563 ssl_clear_hash_ctx(&s->write_hash);
2564 }
2565
2566void SSL_set_connect_state(SSL *s)
2567 {
2568 s->server=0;
2569 s->shutdown=0;
2570 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
2571 s->handshake_func=s->method->ssl_connect;
2572 /* clear the current cipher */
2573 ssl_clear_cipher_ctx(s);
2574 ssl_clear_hash_ctx(&s->read_hash);
2575 ssl_clear_hash_ctx(&s->write_hash);
2576 }
2577
2578int ssl_undefined_function(SSL *s)
2579 {
2580 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2581 return(0);
2582 }
2583
2584int ssl_undefined_void_function(void)
2585 {
2586 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2587 return(0);
2588 }
2589
2590int ssl_undefined_const_function(const SSL *s)
2591 {
2592 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2593 return(0);
2594 }
2595
2596SSL_METHOD *ssl_bad_method(int ver)
2597 {
2598 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2599 return(NULL);
2600 }
2601
2602const char *SSL_get_version(const SSL *s)
2603 {
2604 if (s->version == TLS1_2_VERSION)
2605 return("TLSv1.2");
2606 else if (s->version == TLS1_1_VERSION)
2607 return("TLSv1.1");
2608 if (s->version == TLS1_VERSION)
2609 return("TLSv1");
2610 else if (s->version == SSL3_VERSION)
2611 return("SSLv3");
2612 else if (s->version == SSL2_VERSION)
2613 return("SSLv2");
2614 else
2615 return("unknown");
2616 }
2617
2618SSL *SSL_dup(SSL *s)
2619 {
2620 STACK_OF(X509_NAME) *sk;
2621 X509_NAME *xn;
2622 SSL *ret;
2623 int i;
2624
2625 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2626 return(NULL);
2627
2628 ret->version = s->version;
2629 ret->type = s->type;
2630 ret->method = s->method;
2631
2632 if (s->session != NULL)
2633 {
2634 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2635 SSL_copy_session_id(ret,s);
2636 }
2637 else
2638 {
2639 /* No session has been established yet, so we have to expect
2640 * that s->cert or ret->cert will be changed later --
2641 * they should not both point to the same object,
2642 * and thus we can't use SSL_copy_session_id. */
2643
2644 ret->method->ssl_free(ret);
2645 ret->method = s->method;
2646 ret->method->ssl_new(ret);
2647
2648 if (s->cert != NULL)
2649 {
2650 if (ret->cert != NULL)
2651 {
2652 ssl_cert_free(ret->cert);
2653 }
2654 ret->cert = ssl_cert_dup(s->cert);
2655 if (ret->cert == NULL)
2656 goto err;
2657 }
2658
2659 SSL_set_session_id_context(ret,
2660 s->sid_ctx, s->sid_ctx_length);
2661 }
2662
2663 ret->options=s->options;
2664 ret->mode=s->mode;
2665 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
2666 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
2667 ret->msg_callback = s->msg_callback;
2668 ret->msg_callback_arg = s->msg_callback_arg;
2669 SSL_set_verify(ret,SSL_get_verify_mode(s),
2670 SSL_get_verify_callback(s));
2671 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
2672 ret->generate_session_id = s->generate_session_id;
2673
2674 SSL_set_info_callback(ret,SSL_get_info_callback(s));
2675
2676 ret->debug=s->debug;
2677
2678 /* copy app data, a little dangerous perhaps */
2679 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2680 goto err;
2681
2682 /* setup rbio, and wbio */
2683 if (s->rbio != NULL)
2684 {
2685 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
2686 goto err;
2687 }
2688 if (s->wbio != NULL)
2689 {
2690 if (s->wbio != s->rbio)
2691 {
2692 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
2693 goto err;
2694 }
2695 else
2696 ret->wbio=ret->rbio;
2697 }
2698 ret->rwstate = s->rwstate;
2699 ret->in_handshake = s->in_handshake;
2700 ret->handshake_func = s->handshake_func;
2701 ret->server = s->server;
2702 ret->renegotiate = s->renegotiate;
2703 ret->new_session = s->new_session;
2704 ret->quiet_shutdown = s->quiet_shutdown;
2705 ret->shutdown=s->shutdown;
2706 ret->state=s->state; /* SSL_dup does not really work at any state, though */
2707 ret->rstate=s->rstate;
2708 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
2709 ret->hit=s->hit;
2710
2711 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2712
2713 /* dup the cipher_list and cipher_list_by_id stacks */
2714 if (s->cipher_list != NULL)
2715 {
2716 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2717 goto err;
2718 }
2719 if (s->cipher_list_by_id != NULL)
2720 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2721 == NULL)
2722 goto err;
2723
2724 /* Dup the client_CA list */
2725 if (s->client_CA != NULL)
2726 {
2727 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
2728 ret->client_CA=sk;
2729 for (i=0; i<sk_X509_NAME_num(sk); i++)
2730 {
2731 xn=sk_X509_NAME_value(sk,i);
2732 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
2733 {
2734 X509_NAME_free(xn);
2735 goto err;
2736 }
2737 }
2738 }
2739
2740 if (0)
2741 {
2742err:
2743 if (ret != NULL) SSL_free(ret);
2744 ret=NULL;
2745 }
2746 return(ret);
2747 }
2748
2749void ssl_clear_cipher_ctx(SSL *s)
2750 {
2751 if (s->enc_read_ctx != NULL)
2752 {
2753 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2754 OPENSSL_free(s->enc_read_ctx);
2755 s->enc_read_ctx=NULL;
2756 }
2757 if (s->enc_write_ctx != NULL)
2758 {
2759 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2760 OPENSSL_free(s->enc_write_ctx);
2761 s->enc_write_ctx=NULL;
2762 }
2763#ifndef OPENSSL_NO_COMP
2764 if (s->expand != NULL)
2765 {
2766 COMP_CTX_free(s->expand);
2767 s->expand=NULL;
2768 }
2769 if (s->compress != NULL)
2770 {
2771 COMP_CTX_free(s->compress);
2772 s->compress=NULL;
2773 }
2774#endif
2775 }
2776
2777/* Fix this function so that it takes an optional type parameter */
2778X509 *SSL_get_certificate(const SSL *s)
2779 {
2780 if (s->cert != NULL)
2781 return(s->cert->key->x509);
2782 else
2783 return(NULL);
2784 }
2785
2786/* Fix this function so that it takes an optional type parameter */
2787EVP_PKEY *SSL_get_privatekey(SSL *s)
2788 {
2789 if (s->cert != NULL)
2790 return(s->cert->key->privatekey);
2791 else
2792 return(NULL);
2793 }
2794
2795const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2796 {
2797 if ((s->session != NULL) && (s->session->cipher != NULL))
2798 return(s->session->cipher);
2799 return(NULL);
2800 }
2801#ifdef OPENSSL_NO_COMP
2802const void *SSL_get_current_compression(SSL *s)
2803 {
2804 return NULL;
2805 }
2806const void *SSL_get_current_expansion(SSL *s)
2807 {
2808 return NULL;
2809 }
2810#else
2811
2812const COMP_METHOD *SSL_get_current_compression(SSL *s)
2813 {
2814 if (s->compress != NULL)
2815 return(s->compress->meth);
2816 return(NULL);
2817 }
2818
2819const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2820 {
2821 if (s->expand != NULL)
2822 return(s->expand->meth);
2823 return(NULL);
2824 }
2825#endif
2826
2827int ssl_init_wbio_buffer(SSL *s,int push)
2828 {
2829 BIO *bbio;
2830
2831 if (s->bbio == NULL)
2832 {
2833 bbio=BIO_new(BIO_f_buffer());
2834 if (bbio == NULL) return(0);
2835 s->bbio=bbio;
2836 }
2837 else
2838 {
2839 bbio=s->bbio;
2840 if (s->bbio == s->wbio)
2841 s->wbio=BIO_pop(s->wbio);
2842 }
2843 (void)BIO_reset(bbio);
2844/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2845 if (!BIO_set_read_buffer_size(bbio,1))
2846 {
2847 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
2848 return(0);
2849 }
2850 if (push)
2851 {
2852 if (s->wbio != bbio)
2853 s->wbio=BIO_push(bbio,s->wbio);
2854 }
2855 else
2856 {
2857 if (s->wbio == bbio)
2858 s->wbio=BIO_pop(bbio);
2859 }
2860 return(1);
2861 }
2862
2863void ssl_free_wbio_buffer(SSL *s)
2864 {
2865 if (s->bbio == NULL) return;
2866
2867 if (s->bbio == s->wbio)
2868 {
2869 /* remove buffering */
2870 s->wbio=BIO_pop(s->wbio);
2871#ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
2872 assert(s->wbio != NULL);
2873#endif
2874 }
2875 BIO_free(s->bbio);
2876 s->bbio=NULL;
2877 }
2878
2879void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
2880 {
2881 ctx->quiet_shutdown=mode;
2882 }
2883
2884int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2885 {
2886 return(ctx->quiet_shutdown);
2887 }
2888
2889void SSL_set_quiet_shutdown(SSL *s,int mode)
2890 {
2891 s->quiet_shutdown=mode;
2892 }
2893
2894int SSL_get_quiet_shutdown(const SSL *s)
2895 {
2896 return(s->quiet_shutdown);
2897 }
2898
2899void SSL_set_shutdown(SSL *s,int mode)
2900 {
2901 s->shutdown=mode;
2902 }
2903
2904int SSL_get_shutdown(const SSL *s)
2905 {
2906 return(s->shutdown);
2907 }
2908
2909int SSL_version(const SSL *s)
2910 {
2911 return(s->version);
2912 }
2913
2914SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2915 {
2916 return(ssl->ctx);
2917 }
2918
2919SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx)
2920 {
2921 if (ssl->ctx == ctx)
2922 return ssl->ctx;
2923#ifndef OPENSSL_NO_TLSEXT
2924 if (ctx == NULL)
2925 ctx = ssl->initial_ctx;
2926#endif
2927 if (ssl->cert != NULL)
2928 ssl_cert_free(ssl->cert);
2929 ssl->cert = ssl_cert_dup(ctx->cert);
2930 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
2931 if (ssl->ctx != NULL)
2932 SSL_CTX_free(ssl->ctx); /* decrement reference count */
2933 ssl->ctx = ctx;
2934 return(ssl->ctx);
2935 }
2936
2937#ifndef OPENSSL_NO_STDIO
2938int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2939 {
2940 return(X509_STORE_set_default_paths(ctx->cert_store));
2941 }
2942
2943int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2944 const char *CApath)
2945 {
2946 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2947 }
2948#endif
2949
2950void SSL_set_info_callback(SSL *ssl,
2951 void (*cb)(const SSL *ssl,int type,int val))
2952 {
2953 ssl->info_callback=cb;
2954 }
2955
2956/* One compiler (Diab DCC) doesn't like argument names in returned
2957 function pointer. */
2958void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/)
2959 {
2960 return ssl->info_callback;
2961 }
2962
2963int SSL_state(const SSL *ssl)
2964 {
2965 return(ssl->state);
2966 }
2967
2968void SSL_set_state(SSL *ssl, int state)
2969 {
2970 ssl->state = state;
2971 }
2972
2973void SSL_set_verify_result(SSL *ssl,long arg)
2974 {
2975 ssl->verify_result=arg;
2976 }
2977
2978long SSL_get_verify_result(const SSL *ssl)
2979 {
2980 return(ssl->verify_result);
2981 }
2982
2983int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2984 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2985 {
2986 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
2987 new_func, dup_func, free_func);
2988 }
2989
2990int SSL_set_ex_data(SSL *s,int idx,void *arg)
2991 {
2992 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2993 }
2994
2995void *SSL_get_ex_data(const SSL *s,int idx)
2996 {
2997 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2998 }
2999
3000int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
3001 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
3002 {
3003 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
3004 new_func, dup_func, free_func);
3005 }
3006
3007int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
3008 {
3009 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
3010 }
3011
3012void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx)
3013 {
3014 return(CRYPTO_get_ex_data(&s->ex_data,idx));
3015 }
3016
3017int ssl_ok(SSL *s)
3018 {
3019 return(1);
3020 }
3021
3022X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3023 {
3024 return(ctx->cert_store);
3025 }
3026
3027void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
3028 {
3029 if (ctx->cert_store != NULL)
3030 X509_STORE_free(ctx->cert_store);
3031 ctx->cert_store=store;
3032 }
3033
3034int SSL_want(const SSL *s)
3035 {
3036 return(s->rwstate);
3037 }
3038
3039/*!
3040 * \brief Set the callback for generating temporary RSA keys.
3041 * \param ctx the SSL context.
3042 * \param cb the callback
3043 */
3044
3045#ifndef OPENSSL_NO_RSA
3046void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
3047 int is_export,
3048 int keylength))
3049 {
3050 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
3051 }
3052
3053void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
3054 int is_export,
3055 int keylength))
3056 {
3057 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
3058 }
3059#endif
3060
3061#ifdef DOXYGEN
3062/*!
3063 * \brief The RSA temporary key callback function.
3064 * \param ssl the SSL session.
3065 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3066 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3067 * of the required key in bits.
3068 * \return the temporary RSA key.
3069 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3070 */
3071
3072RSA *cb(SSL *ssl,int is_export,int keylength)
3073 {}
3074#endif
3075
3076/*!
3077 * \brief Set the callback for generating temporary DH keys.
3078 * \param ctx the SSL context.
3079 * \param dh the callback
3080 */
3081
3082#ifndef OPENSSL_NO_DH
3083void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
3084 int keylength))
3085 {
3086 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
3087 }
3088
3089void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
3090 int keylength))
3091 {
3092 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
3093 }
3094#endif
3095
3096#ifndef OPENSSL_NO_ECDH
3097void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
3098 int keylength))
3099 {
3100 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
3101 }
3102
3103void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
3104 int keylength))
3105 {
3106 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
3107 }
3108#endif
3109
3110#ifndef OPENSSL_NO_PSK
3111int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3112 {
3113 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
3114 {
3115 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3116 return 0;
3117 }
3118 if (ctx->psk_identity_hint != NULL)
3119 OPENSSL_free(ctx->psk_identity_hint);
3120 if (identity_hint != NULL)
3121 {
3122 ctx->psk_identity_hint = BUF_strdup(identity_hint);
3123 if (ctx->psk_identity_hint == NULL)
3124 return 0;
3125 }
3126 else
3127 ctx->psk_identity_hint = NULL;
3128 return 1;
3129 }
3130
3131int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3132 {
3133 if (s == NULL)
3134 return 0;
3135
3136 if (s->session == NULL)
3137 return 1; /* session not created yet, ignored */
3138
3139 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
3140 {
3141 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3142 return 0;
3143 }
3144 if (s->session->psk_identity_hint != NULL)
3145 OPENSSL_free(s->session->psk_identity_hint);
3146 if (identity_hint != NULL)
3147 {
3148 s->session->psk_identity_hint = BUF_strdup(identity_hint);
3149 if (s->session->psk_identity_hint == NULL)
3150 return 0;
3151 }
3152 else
3153 s->session->psk_identity_hint = NULL;
3154 return 1;
3155 }
3156
3157const char *SSL_get_psk_identity_hint(const SSL *s)
3158 {
3159 if (s == NULL || s->session == NULL)
3160 return NULL;
3161 return(s->session->psk_identity_hint);
3162 }
3163
3164const char *SSL_get_psk_identity(const SSL *s)
3165 {
3166 if (s == NULL || s->session == NULL)
3167 return NULL;
3168 return(s->session->psk_identity);
3169 }
3170
3171void SSL_set_psk_client_callback(SSL *s,
3172 unsigned int (*cb)(SSL *ssl, const char *hint,
3173 char *identity, unsigned int max_identity_len, unsigned char *psk,
3174 unsigned int max_psk_len))
3175 {
3176 s->psk_client_callback = cb;
3177 }
3178
3179void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3180 unsigned int (*cb)(SSL *ssl, const char *hint,
3181 char *identity, unsigned int max_identity_len, unsigned char *psk,
3182 unsigned int max_psk_len))
3183 {
3184 ctx->psk_client_callback = cb;
3185 }
3186
3187void SSL_set_psk_server_callback(SSL *s,
3188 unsigned int (*cb)(SSL *ssl, const char *identity,
3189 unsigned char *psk, unsigned int max_psk_len))
3190 {
3191 s->psk_server_callback = cb;
3192 }
3193
3194void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3195 unsigned int (*cb)(SSL *ssl, const char *identity,
3196 unsigned char *psk, unsigned int max_psk_len))
3197 {
3198 ctx->psk_server_callback = cb;
3199 }
3200#endif
3201
3202void SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))
3203 {
3204 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3205 }
3206void SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))
3207 {
3208 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3209 }
3210
3211/* Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3212 * vairable, freeing EVP_MD_CTX previously stored in that variable, if
3213 * any. If EVP_MD pointer is passed, initializes ctx with this md
3214 * Returns newly allocated ctx;
3215 */
3216
3217EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md)
3218{
3219 ssl_clear_hash_ctx(hash);
3220 *hash = EVP_MD_CTX_create();
3221 if (md) EVP_DigestInit_ex(*hash,md,NULL);
3222 return *hash;
3223}
3224void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3225{
3226
3227 if (*hash) EVP_MD_CTX_destroy(*hash);
3228 *hash=NULL;
3229}
3230
3231void SSL_set_debug(SSL *s, int debug)
3232 {
3233 s->debug = debug;
3234 }
3235
3236int SSL_cache_hit(SSL *s)
3237 {
3238 return s->hit;
3239 }
3240
3241#if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
3242#include "../crypto/bio/bss_file.c"
3243#endif
3244
3245IMPLEMENT_STACK_OF(SSL_CIPHER)
3246IMPLEMENT_STACK_OF(SSL_COMP)
3247IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER,
3248 ssl_cipher_id);
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-10-24 06:43:35 +0000