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diff --git a/src/lib/libssl/ssl_lib.c b/src/lib/libssl/ssl_lib.c
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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#ifndef OPENSSL_NO_SRTP
601 if (s->srtp_profiles)
602 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
603#endif
604
605 OPENSSL_free(s);
606 }
607
608void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
609 {
610 /* If the output buffering BIO is still in place, remove it
611 */
612 if (s->bbio != NULL)
613 {
614 if (s->wbio == s->bbio)
615 {
616 s->wbio=s->wbio->next_bio;
617 s->bbio->next_bio=NULL;
618 }
619 }
620 if ((s->rbio != NULL) && (s->rbio != rbio))
621 BIO_free_all(s->rbio);
622 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
623 BIO_free_all(s->wbio);
624 s->rbio=rbio;
625 s->wbio=wbio;
626 }
627
628BIO *SSL_get_rbio(const SSL *s)
629 { return(s->rbio); }
630
631BIO *SSL_get_wbio(const SSL *s)
632 { return(s->wbio); }
633
634int SSL_get_fd(const SSL *s)
635 {
636 return(SSL_get_rfd(s));
637 }
638
639int SSL_get_rfd(const SSL *s)
640 {
641 int ret= -1;
642 BIO *b,*r;
643
644 b=SSL_get_rbio(s);
645 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
646 if (r != NULL)
647 BIO_get_fd(r,&ret);
648 return(ret);
649 }
650
651int SSL_get_wfd(const SSL *s)
652 {
653 int ret= -1;
654 BIO *b,*r;
655
656 b=SSL_get_wbio(s);
657 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
658 if (r != NULL)
659 BIO_get_fd(r,&ret);
660 return(ret);
661 }
662
663#ifndef OPENSSL_NO_SOCK
664int SSL_set_fd(SSL *s,int fd)
665 {
666 int ret=0;
667 BIO *bio=NULL;
668
669 bio=BIO_new(BIO_s_socket());
670
671 if (bio == NULL)
672 {
673 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
674 goto err;
675 }
676 BIO_set_fd(bio,fd,BIO_NOCLOSE);
677 SSL_set_bio(s,bio,bio);
678 ret=1;
679err:
680 return(ret);
681 }
682
683int SSL_set_wfd(SSL *s,int fd)
684 {
685 int ret=0;
686 BIO *bio=NULL;
687
688 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
689 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
690 {
691 bio=BIO_new(BIO_s_socket());
692
693 if (bio == NULL)
694 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
695 BIO_set_fd(bio,fd,BIO_NOCLOSE);
696 SSL_set_bio(s,SSL_get_rbio(s),bio);
697 }
698 else
699 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
700 ret=1;
701err:
702 return(ret);
703 }
704
705int SSL_set_rfd(SSL *s,int fd)
706 {
707 int ret=0;
708 BIO *bio=NULL;
709
710 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
711 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
712 {
713 bio=BIO_new(BIO_s_socket());
714
715 if (bio == NULL)
716 {
717 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
718 goto err;
719 }
720 BIO_set_fd(bio,fd,BIO_NOCLOSE);
721 SSL_set_bio(s,bio,SSL_get_wbio(s));
722 }
723 else
724 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
725 ret=1;
726err:
727 return(ret);
728 }
729#endif
730
731
732/* return length of latest Finished message we sent, copy to 'buf' */
733size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
734 {
735 size_t ret = 0;
736
737 if (s->s3 != NULL)
738 {
739 ret = s->s3->tmp.finish_md_len;
740 if (count > ret)
741 count = ret;
742 memcpy(buf, s->s3->tmp.finish_md, count);
743 }
744 return ret;
745 }
746
747/* return length of latest Finished message we expected, copy to 'buf' */
748size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
749 {
750 size_t ret = 0;
751
752 if (s->s3 != NULL)
753 {
754 ret = s->s3->tmp.peer_finish_md_len;
755 if (count > ret)
756 count = ret;
757 memcpy(buf, s->s3->tmp.peer_finish_md, count);
758 }
759 return ret;
760 }
761
762
763int SSL_get_verify_mode(const SSL *s)
764 {
765 return(s->verify_mode);
766 }
767
768int SSL_get_verify_depth(const SSL *s)
769 {
770 return X509_VERIFY_PARAM_get_depth(s->param);
771 }
772
773int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *)
774 {
775 return(s->verify_callback);
776 }
777
778int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
779 {
780 return(ctx->verify_mode);
781 }
782
783int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
784 {
785 return X509_VERIFY_PARAM_get_depth(ctx->param);
786 }
787
788int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *)
789 {
790 return(ctx->default_verify_callback);
791 }
792
793void SSL_set_verify(SSL *s,int mode,
794 int (*callback)(int ok,X509_STORE_CTX *ctx))
795 {
796 s->verify_mode=mode;
797 if (callback != NULL)
798 s->verify_callback=callback;
799 }
800
801void SSL_set_verify_depth(SSL *s,int depth)
802 {
803 X509_VERIFY_PARAM_set_depth(s->param, depth);
804 }
805
806void SSL_set_read_ahead(SSL *s,int yes)
807 {
808 s->read_ahead=yes;
809 }
810
811int SSL_get_read_ahead(const SSL *s)
812 {
813 return(s->read_ahead);
814 }
815
816int SSL_pending(const SSL *s)
817 {
818 /* SSL_pending cannot work properly if read-ahead is enabled
819 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
820 * and it is impossible to fix since SSL_pending cannot report
821 * errors that may be observed while scanning the new data.
822 * (Note that SSL_pending() is often used as a boolean value,
823 * so we'd better not return -1.)
824 */
825 return(s->method->ssl_pending(s));
826 }
827
828X509 *SSL_get_peer_certificate(const SSL *s)
829 {
830 X509 *r;
831
832 if ((s == NULL) || (s->session == NULL))
833 r=NULL;
834 else
835 r=s->session->peer;
836
837 if (r == NULL) return(r);
838
839 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
840
841 return(r);
842 }
843
844STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
845 {
846 STACK_OF(X509) *r;
847
848 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
849 r=NULL;
850 else
851 r=s->session->sess_cert->cert_chain;
852
853 /* If we are a client, cert_chain includes the peer's own
854 * certificate; if we are a server, it does not. */
855
856 return(r);
857 }
858
859/* Now in theory, since the calling process own 't' it should be safe to
860 * modify. We need to be able to read f without being hassled */
861void SSL_copy_session_id(SSL *t,const SSL *f)
862 {
863 CERT *tmp;
864
865 /* Do we need to to SSL locking? */
866 SSL_set_session(t,SSL_get_session(f));
867
868 /* what if we are setup as SSLv2 but want to talk SSLv3 or
869 * vice-versa */
870 if (t->method != f->method)
871 {
872 t->method->ssl_free(t); /* cleanup current */
873 t->method=f->method; /* change method */
874 t->method->ssl_new(t); /* setup new */
875 }
876
877 tmp=t->cert;
878 if (f->cert != NULL)
879 {
880 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
881 t->cert=f->cert;
882 }
883 else
884 t->cert=NULL;
885 if (tmp != NULL) ssl_cert_free(tmp);
886 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
887 }
888
889/* Fix this so it checks all the valid key/cert options */
890int SSL_CTX_check_private_key(const SSL_CTX *ctx)
891 {
892 if ( (ctx == NULL) ||
893 (ctx->cert == NULL) ||
894 (ctx->cert->key->x509 == NULL))
895 {
896 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
897 return(0);
898 }
899 if (ctx->cert->key->privatekey == NULL)
900 {
901 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
902 return(0);
903 }
904 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
905 }
906
907/* Fix this function so that it takes an optional type parameter */
908int SSL_check_private_key(const SSL *ssl)
909 {
910 if (ssl == NULL)
911 {
912 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
913 return(0);
914 }
915 if (ssl->cert == NULL)
916 {
917 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
918 return 0;
919 }
920 if (ssl->cert->key->x509 == NULL)
921 {
922 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
923 return(0);
924 }
925 if (ssl->cert->key->privatekey == NULL)
926 {
927 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
928 return(0);
929 }
930 return(X509_check_private_key(ssl->cert->key->x509,
931 ssl->cert->key->privatekey));
932 }
933
934int SSL_accept(SSL *s)
935 {
936 if (s->handshake_func == 0)
937 /* Not properly initialized yet */
938 SSL_set_accept_state(s);
939
940 return(s->method->ssl_accept(s));
941 }
942
943int SSL_connect(SSL *s)
944 {
945 if (s->handshake_func == 0)
946 /* Not properly initialized yet */
947 SSL_set_connect_state(s);
948
949 return(s->method->ssl_connect(s));
950 }
951
952long SSL_get_default_timeout(const SSL *s)
953 {
954 return(s->method->get_timeout());
955 }
956
957int SSL_read(SSL *s,void *buf,int num)
958 {
959 if (s->handshake_func == 0)
960 {
961 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
962 return -1;
963 }
964
965 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
966 {
967 s->rwstate=SSL_NOTHING;
968 return(0);
969 }
970 return(s->method->ssl_read(s,buf,num));
971 }
972
973int SSL_peek(SSL *s,void *buf,int num)
974 {
975 if (s->handshake_func == 0)
976 {
977 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
978 return -1;
979 }
980
981 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
982 {
983 return(0);
984 }
985 return(s->method->ssl_peek(s,buf,num));
986 }
987
988int SSL_write(SSL *s,const void *buf,int num)
989 {
990 if (s->handshake_func == 0)
991 {
992 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
993 return -1;
994 }
995
996 if (s->shutdown & SSL_SENT_SHUTDOWN)
997 {
998 s->rwstate=SSL_NOTHING;
999 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
1000 return(-1);
1001 }
1002 return(s->method->ssl_write(s,buf,num));
1003 }
1004
1005int SSL_shutdown(SSL *s)
1006 {
1007 /* Note that this function behaves differently from what one might
1008 * expect. Return values are 0 for no success (yet),
1009 * 1 for success; but calling it once is usually not enough,
1010 * even if blocking I/O is used (see ssl3_shutdown).
1011 */
1012
1013 if (s->handshake_func == 0)
1014 {
1015 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1016 return -1;
1017 }
1018
1019 if ((s != NULL) && !SSL_in_init(s))
1020 return(s->method->ssl_shutdown(s));
1021 else
1022 return(1);
1023 }
1024
1025int SSL_renegotiate(SSL *s)
1026 {
1027 if (s->renegotiate == 0)
1028 s->renegotiate=1;
1029
1030 s->new_session=1;
1031
1032 return(s->method->ssl_renegotiate(s));
1033 }
1034
1035int SSL_renegotiate_abbreviated(SSL *s)
1036 {
1037 if (s->renegotiate == 0)
1038 s->renegotiate=1;
1039
1040 s->new_session=0;
1041
1042 return(s->method->ssl_renegotiate(s));
1043 }
1044
1045int SSL_renegotiate_pending(SSL *s)
1046 {
1047 /* becomes true when negotiation is requested;
1048 * false again once a handshake has finished */
1049 return (s->renegotiate != 0);
1050 }
1051
1052long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
1053 {
1054 long l;
1055
1056 switch (cmd)
1057 {
1058 case SSL_CTRL_GET_READ_AHEAD:
1059 return(s->read_ahead);
1060 case SSL_CTRL_SET_READ_AHEAD:
1061 l=s->read_ahead;
1062 s->read_ahead=larg;
1063 return(l);
1064
1065 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1066 s->msg_callback_arg = parg;
1067 return 1;
1068
1069 case SSL_CTRL_OPTIONS:
1070 return(s->options|=larg);
1071 case SSL_CTRL_CLEAR_OPTIONS:
1072 return(s->options&=~larg);
1073 case SSL_CTRL_MODE:
1074 return(s->mode|=larg);
1075 case SSL_CTRL_CLEAR_MODE:
1076 return(s->mode &=~larg);
1077 case SSL_CTRL_GET_MAX_CERT_LIST:
1078 return(s->max_cert_list);
1079 case SSL_CTRL_SET_MAX_CERT_LIST:
1080 l=s->max_cert_list;
1081 s->max_cert_list=larg;
1082 return(l);
1083 case SSL_CTRL_SET_MTU:
1084#ifndef OPENSSL_NO_DTLS1
1085 if (larg < (long)dtls1_min_mtu())
1086 return 0;
1087#endif
1088
1089 if (SSL_version(s) == DTLS1_VERSION ||
1090 SSL_version(s) == DTLS1_BAD_VER)
1091 {
1092 s->d1->mtu = larg;
1093 return larg;
1094 }
1095 return 0;
1096 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1097 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1098 return 0;
1099 s->max_send_fragment = larg;
1100 return 1;
1101 case SSL_CTRL_GET_RI_SUPPORT:
1102 if (s->s3)
1103 return s->s3->send_connection_binding;
1104 else return 0;
1105 default:
1106 return(s->method->ssl_ctrl(s,cmd,larg,parg));
1107 }
1108 }
1109
1110long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
1111 {
1112 switch(cmd)
1113 {
1114 case SSL_CTRL_SET_MSG_CALLBACK:
1115 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1116 return 1;
1117
1118 default:
1119 return(s->method->ssl_callback_ctrl(s,cmd,fp));
1120 }
1121 }
1122
1123LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1124 {
1125 return ctx->sessions;
1126 }
1127
1128long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
1129 {
1130 long l;
1131
1132 switch (cmd)
1133 {
1134 case SSL_CTRL_GET_READ_AHEAD:
1135 return(ctx->read_ahead);
1136 case SSL_CTRL_SET_READ_AHEAD:
1137 l=ctx->read_ahead;
1138 ctx->read_ahead=larg;
1139 return(l);
1140
1141 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1142 ctx->msg_callback_arg = parg;
1143 return 1;
1144
1145 case SSL_CTRL_GET_MAX_CERT_LIST:
1146 return(ctx->max_cert_list);
1147 case SSL_CTRL_SET_MAX_CERT_LIST:
1148 l=ctx->max_cert_list;
1149 ctx->max_cert_list=larg;
1150 return(l);
1151
1152 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1153 l=ctx->session_cache_size;
1154 ctx->session_cache_size=larg;
1155 return(l);
1156 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1157 return(ctx->session_cache_size);
1158 case SSL_CTRL_SET_SESS_CACHE_MODE:
1159 l=ctx->session_cache_mode;
1160 ctx->session_cache_mode=larg;
1161 return(l);
1162 case SSL_CTRL_GET_SESS_CACHE_MODE:
1163 return(ctx->session_cache_mode);
1164
1165 case SSL_CTRL_SESS_NUMBER:
1166 return(lh_SSL_SESSION_num_items(ctx->sessions));
1167 case SSL_CTRL_SESS_CONNECT:
1168 return(ctx->stats.sess_connect);
1169 case SSL_CTRL_SESS_CONNECT_GOOD:
1170 return(ctx->stats.sess_connect_good);
1171 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1172 return(ctx->stats.sess_connect_renegotiate);
1173 case SSL_CTRL_SESS_ACCEPT:
1174 return(ctx->stats.sess_accept);
1175 case SSL_CTRL_SESS_ACCEPT_GOOD:
1176 return(ctx->stats.sess_accept_good);
1177 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1178 return(ctx->stats.sess_accept_renegotiate);
1179 case SSL_CTRL_SESS_HIT:
1180 return(ctx->stats.sess_hit);
1181 case SSL_CTRL_SESS_CB_HIT:
1182 return(ctx->stats.sess_cb_hit);
1183 case SSL_CTRL_SESS_MISSES:
1184 return(ctx->stats.sess_miss);
1185 case SSL_CTRL_SESS_TIMEOUTS:
1186 return(ctx->stats.sess_timeout);
1187 case SSL_CTRL_SESS_CACHE_FULL:
1188 return(ctx->stats.sess_cache_full);
1189 case SSL_CTRL_OPTIONS:
1190 return(ctx->options|=larg);
1191 case SSL_CTRL_CLEAR_OPTIONS:
1192 return(ctx->options&=~larg);
1193 case SSL_CTRL_MODE:
1194 return(ctx->mode|=larg);
1195 case SSL_CTRL_CLEAR_MODE:
1196 return(ctx->mode&=~larg);
1197 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1198 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1199 return 0;
1200 ctx->max_send_fragment = larg;
1201 return 1;
1202 default:
1203 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
1204 }
1205 }
1206
1207long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
1208 {
1209 switch(cmd)
1210 {
1211 case SSL_CTRL_SET_MSG_CALLBACK:
1212 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1213 return 1;
1214
1215 default:
1216 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
1217 }
1218 }
1219
1220int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1221 {
1222 long l;
1223
1224 l=a->id-b->id;
1225 if (l == 0L)
1226 return(0);
1227 else
1228 return((l > 0)?1:-1);
1229 }
1230
1231int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1232 const SSL_CIPHER * const *bp)
1233 {
1234 long l;
1235
1236 l=(*ap)->id-(*bp)->id;
1237 if (l == 0L)
1238 return(0);
1239 else
1240 return((l > 0)?1:-1);
1241 }
1242
1243/** return a STACK of the ciphers available for the SSL and in order of
1244 * preference */
1245STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1246 {
1247 if (s != NULL)
1248 {
1249 if (s->cipher_list != NULL)
1250 {
1251 return(s->cipher_list);
1252 }
1253 else if ((s->ctx != NULL) &&
1254 (s->ctx->cipher_list != NULL))
1255 {
1256 return(s->ctx->cipher_list);
1257 }
1258 }
1259 return(NULL);
1260 }
1261
1262/** return a STACK of the ciphers available for the SSL and in order of
1263 * algorithm id */
1264STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1265 {
1266 if (s != NULL)
1267 {
1268 if (s->cipher_list_by_id != NULL)
1269 {
1270 return(s->cipher_list_by_id);
1271 }
1272 else if ((s->ctx != NULL) &&
1273 (s->ctx->cipher_list_by_id != NULL))
1274 {
1275 return(s->ctx->cipher_list_by_id);
1276 }
1277 }
1278 return(NULL);
1279 }
1280
1281/** The old interface to get the same thing as SSL_get_ciphers() */
1282const char *SSL_get_cipher_list(const SSL *s,int n)
1283 {
1284 SSL_CIPHER *c;
1285 STACK_OF(SSL_CIPHER) *sk;
1286
1287 if (s == NULL) return(NULL);
1288 sk=SSL_get_ciphers(s);
1289 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1290 return(NULL);
1291 c=sk_SSL_CIPHER_value(sk,n);
1292 if (c == NULL) return(NULL);
1293 return(c->name);
1294 }
1295
1296/** specify the ciphers to be used by default by the SSL_CTX */
1297int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1298 {
1299 STACK_OF(SSL_CIPHER) *sk;
1300
1301 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1302 &ctx->cipher_list_by_id,str);
1303 /* ssl_create_cipher_list may return an empty stack if it
1304 * was unable to find a cipher matching the given rule string
1305 * (for example if the rule string specifies a cipher which
1306 * has been disabled). This is not an error as far as
1307 * ssl_create_cipher_list is concerned, and hence
1308 * ctx->cipher_list and ctx->cipher_list_by_id has been
1309 * updated. */
1310 if (sk == NULL)
1311 return 0;
1312 else if (sk_SSL_CIPHER_num(sk) == 0)
1313 {
1314 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1315 return 0;
1316 }
1317 return 1;
1318 }
1319
1320/** specify the ciphers to be used by the SSL */
1321int SSL_set_cipher_list(SSL *s,const char *str)
1322 {
1323 STACK_OF(SSL_CIPHER) *sk;
1324
1325 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1326 &s->cipher_list_by_id,str);
1327 /* see comment in SSL_CTX_set_cipher_list */
1328 if (sk == NULL)
1329 return 0;
1330 else if (sk_SSL_CIPHER_num(sk) == 0)
1331 {
1332 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1333 return 0;
1334 }
1335 return 1;
1336 }
1337
1338/* works well for SSLv2, not so good for SSLv3 */
1339char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len)
1340 {
1341 char *end;
1342 STACK_OF(SSL_CIPHER) *sk;
1343 SSL_CIPHER *c;
1344 size_t curlen = 0;
1345 int i;
1346
1347 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1348 (len < 2))
1349 return(NULL);
1350
1351 sk=s->session->ciphers;
1352 buf[0] = '\0';
1353 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1354 {
1355 c=sk_SSL_CIPHER_value(sk,i);
1356 end = buf + curlen;
1357 if (strlcat(buf, c->name, len) >= len ||
1358 (curlen = strlcat(buf, ":", len)) >= len)
1359 {
1360 /* remove truncated cipher from list */
1361 *end = '\0';
1362 break;
1363 }
1364 }
1365 /* remove trailing colon */
1366 if ((end = strrchr(buf, ':')) != NULL)
1367 *end = '\0';
1368 return(buf);
1369 }
1370
1371int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
1372 int (*put_cb)(const SSL_CIPHER *, unsigned char *))
1373 {
1374 int i,j=0;
1375 SSL_CIPHER *c;
1376 unsigned char *q;
1377#ifndef OPENSSL_NO_KRB5
1378 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1379#endif /* OPENSSL_NO_KRB5 */
1380
1381 if (sk == NULL) return(0);
1382 q=p;
1383
1384 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1385 {
1386 c=sk_SSL_CIPHER_value(sk,i);
1387 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */
1388 if ((c->algorithm_ssl & SSL_TLSV1_2) &&
1389 (TLS1_get_client_version(s) < TLS1_2_VERSION))
1390 continue;
1391#ifndef OPENSSL_NO_KRB5
1392 if (((c->algorithm_mkey & SSL_kKRB5) || (c->algorithm_auth & SSL_aKRB5)) &&
1393 nokrb5)
1394 continue;
1395#endif /* OPENSSL_NO_KRB5 */
1396#ifndef OPENSSL_NO_PSK
1397 /* with PSK there must be client callback set */
1398 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK)) &&
1399 s->psk_client_callback == NULL)
1400 continue;
1401#endif /* OPENSSL_NO_PSK */
1402 j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p);
1403 p+=j;
1404 }
1405 /* If p == q, no ciphers and caller indicates an error. Otherwise
1406 * add SCSV if not renegotiating.
1407 */
1408 if (p != q && !s->renegotiate)
1409 {
1410 static SSL_CIPHER scsv =
1411 {
1412 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1413 };
1414 j = put_cb ? put_cb(&scsv,p) : ssl_put_cipher_by_char(s,&scsv,p);
1415 p+=j;
1416#ifdef OPENSSL_RI_DEBUG
1417 fprintf(stderr, "SCSV sent by client\n");
1418#endif
1419 }
1420
1421 return(p-q);
1422 }
1423
1424STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1425 STACK_OF(SSL_CIPHER) **skp)
1426 {
1427 const SSL_CIPHER *c;
1428 STACK_OF(SSL_CIPHER) *sk;
1429 int i,n;
1430 if (s->s3)
1431 s->s3->send_connection_binding = 0;
1432
1433 n=ssl_put_cipher_by_char(s,NULL,NULL);
1434 if ((num%n) != 0)
1435 {
1436 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1437 return(NULL);
1438 }
1439 if ((skp == NULL) || (*skp == NULL))
1440 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1441 else
1442 {
1443 sk= *skp;
1444 sk_SSL_CIPHER_zero(sk);
1445 }
1446
1447 for (i=0; i<num; i+=n)
1448 {
1449 /* Check for SCSV */
1450 if (s->s3 && (n != 3 || !p[0]) &&
1451 (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1452 (p[n-1] == (SSL3_CK_SCSV & 0xff)))
1453 {
1454 /* SCSV fatal if renegotiating */
1455 if (s->renegotiate)
1456 {
1457 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1458 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1459 goto err;
1460 }
1461 s->s3->send_connection_binding = 1;
1462 p += n;
1463#ifdef OPENSSL_RI_DEBUG
1464 fprintf(stderr, "SCSV received by server\n");
1465#endif
1466 continue;
1467 }
1468
1469 c=ssl_get_cipher_by_char(s,p);
1470 p+=n;
1471 if (c != NULL)
1472 {
1473 if (!sk_SSL_CIPHER_push(sk,c))
1474 {
1475 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1476 goto err;
1477 }
1478 }
1479 }
1480
1481 if (skp != NULL)
1482 *skp=sk;
1483 return(sk);
1484err:
1485 if ((skp == NULL) || (*skp == NULL))
1486 sk_SSL_CIPHER_free(sk);
1487 return(NULL);
1488 }
1489
1490
1491#ifndef OPENSSL_NO_TLSEXT
1492/** return a servername extension value if provided in Client Hello, or NULL.
1493 * So far, only host_name types are defined (RFC 3546).
1494 */
1495
1496const char *SSL_get_servername(const SSL *s, const int type)
1497 {
1498 if (type != TLSEXT_NAMETYPE_host_name)
1499 return NULL;
1500
1501 return s->session && !s->tlsext_hostname ?
1502 s->session->tlsext_hostname :
1503 s->tlsext_hostname;
1504 }
1505
1506int SSL_get_servername_type(const SSL *s)
1507 {
1508 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname))
1509 return TLSEXT_NAMETYPE_host_name;
1510 return -1;
1511 }
1512
1513# ifndef OPENSSL_NO_NEXTPROTONEG
1514/* SSL_select_next_proto implements the standard protocol selection. It is
1515 * expected that this function is called from the callback set by
1516 * SSL_CTX_set_next_proto_select_cb.
1517 *
1518 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte
1519 * strings. The length byte itself is not included in the length. A byte
1520 * string of length 0 is invalid. No byte string may be truncated.
1521 *
1522 * The current, but experimental algorithm for selecting the protocol is:
1523 *
1524 * 1) If the server doesn't support NPN then this is indicated to the
1525 * callback. In this case, the client application has to abort the connection
1526 * or have a default application level protocol.
1527 *
1528 * 2) If the server supports NPN, but advertises an empty list then the
1529 * client selects the first protcol in its list, but indicates via the
1530 * API that this fallback case was enacted.
1531 *
1532 * 3) Otherwise, the client finds the first protocol in the server's list
1533 * that it supports and selects this protocol. This is because it's
1534 * assumed that the server has better information about which protocol
1535 * a client should use.
1536 *
1537 * 4) If the client doesn't support any of the server's advertised
1538 * protocols, then this is treated the same as case 2.
1539 *
1540 * It returns either
1541 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or
1542 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1543 */
1544int 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)
1545 {
1546 unsigned int i, j;
1547 const unsigned char *result;
1548 int status = OPENSSL_NPN_UNSUPPORTED;
1549
1550 /* For each protocol in server preference order, see if we support it. */
1551 for (i = 0; i < server_len; )
1552 {
1553 for (j = 0; j < client_len; )
1554 {
1555 if (server[i] == client[j] &&
1556 memcmp(&server[i+1], &client[j+1], server[i]) == 0)
1557 {
1558 /* We found a match */
1559 result = &server[i];
1560 status = OPENSSL_NPN_NEGOTIATED;
1561 goto found;
1562 }
1563 j += client[j];
1564 j++;
1565 }
1566 i += server[i];
1567 i++;
1568 }
1569
1570 /* There's no overlap between our protocols and the server's list. */
1571 result = client;
1572 status = OPENSSL_NPN_NO_OVERLAP;
1573
1574 found:
1575 *out = (unsigned char *) result + 1;
1576 *outlen = result[0];
1577 return status;
1578 }
1579
1580/* SSL_get0_next_proto_negotiated sets *data and *len to point to the client's
1581 * requested protocol for this connection and returns 0. If the client didn't
1582 * request any protocol, then *data is set to NULL.
1583 *
1584 * Note that the client can request any protocol it chooses. The value returned
1585 * from this function need not be a member of the list of supported protocols
1586 * provided by the callback.
1587 */
1588void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, unsigned *len)
1589 {
1590 *data = s->next_proto_negotiated;
1591 if (!*data) {
1592 *len = 0;
1593 } else {
1594 *len = s->next_proto_negotiated_len;
1595 }
1596}
1597
1598/* SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a
1599 * TLS server needs a list of supported protocols for Next Protocol
1600 * Negotiation. The returned list must be in wire format. The list is returned
1601 * by setting |out| to point to it and |outlen| to its length. This memory will
1602 * not be modified, but one should assume that the SSL* keeps a reference to
1603 * it.
1604 *
1605 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. Otherwise, no
1606 * such extension will be included in the ServerHello. */
1607void 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)
1608 {
1609 ctx->next_protos_advertised_cb = cb;
1610 ctx->next_protos_advertised_cb_arg = arg;
1611 }
1612
1613/* SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1614 * client needs to select a protocol from the server's provided list. |out|
1615 * must be set to point to the selected protocol (which may be within |in|).
1616 * The length of the protocol name must be written into |outlen|. The server's
1617 * advertised protocols are provided in |in| and |inlen|. The callback can
1618 * assume that |in| is syntactically valid.
1619 *
1620 * The client must select a protocol. It is fatal to the connection if this
1621 * callback returns a value other than SSL_TLSEXT_ERR_OK.
1622 */
1623void 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)
1624 {
1625 ctx->next_proto_select_cb = cb;
1626 ctx->next_proto_select_cb_arg = arg;
1627 }
1628# endif
1629#endif
1630
1631int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1632 const char *label, size_t llen, const unsigned char *p, size_t plen,
1633 int use_context)
1634 {
1635 if (s->version < TLS1_VERSION)
1636 return -1;
1637
1638 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1639 llen, p, plen,
1640 use_context);
1641 }
1642
1643static unsigned long ssl_session_hash(const SSL_SESSION *a)
1644 {
1645 unsigned long l;
1646
1647 l=(unsigned long)
1648 ((unsigned int) a->session_id[0] )|
1649 ((unsigned int) a->session_id[1]<< 8L)|
1650 ((unsigned long)a->session_id[2]<<16L)|
1651 ((unsigned long)a->session_id[3]<<24L);
1652 return(l);
1653 }
1654
1655/* NB: If this function (or indeed the hash function which uses a sort of
1656 * coarser function than this one) is changed, ensure
1657 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1658 * able to construct an SSL_SESSION that will collide with any existing session
1659 * with a matching session ID. */
1660static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
1661 {
1662 if (a->ssl_version != b->ssl_version)
1663 return(1);
1664 if (a->session_id_length != b->session_id_length)
1665 return(1);
1666 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1667 }
1668
1669/* These wrapper functions should remain rather than redeclaring
1670 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1671 * variable. The reason is that the functions aren't static, they're exposed via
1672 * ssl.h. */
1673static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1674static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1675
1676SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1677 {
1678 SSL_CTX *ret=NULL;
1679
1680 if (meth == NULL)
1681 {
1682 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1683 return(NULL);
1684 }
1685
1686#ifdef OPENSSL_FIPS
1687 if (FIPS_mode() && (meth->version < TLS1_VERSION))
1688 {
1689 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1690 return NULL;
1691 }
1692#endif
1693
1694 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1695 {
1696 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1697 goto err;
1698 }
1699 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1700 if (ret == NULL)
1701 goto err;
1702
1703 memset(ret,0,sizeof(SSL_CTX));
1704
1705 ret->method=meth;
1706
1707 ret->cert_store=NULL;
1708 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1709 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1710 ret->session_cache_head=NULL;
1711 ret->session_cache_tail=NULL;
1712
1713 /* We take the system default */
1714 ret->session_timeout=meth->get_timeout();
1715
1716 ret->new_session_cb=0;
1717 ret->remove_session_cb=0;
1718 ret->get_session_cb=0;
1719 ret->generate_session_id=0;
1720
1721 memset((char *)&ret->stats,0,sizeof(ret->stats));
1722
1723 ret->references=1;
1724 ret->quiet_shutdown=0;
1725
1726/* ret->cipher=NULL;*/
1727/* ret->s2->challenge=NULL;
1728 ret->master_key=NULL;
1729 ret->key_arg=NULL;
1730 ret->s2->conn_id=NULL; */
1731
1732 ret->info_callback=NULL;
1733
1734 ret->app_verify_callback=0;
1735 ret->app_verify_arg=NULL;
1736
1737 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1738 ret->read_ahead=0;
1739 ret->msg_callback=0;
1740 ret->msg_callback_arg=NULL;
1741 ret->verify_mode=SSL_VERIFY_NONE;
1742#if 0
1743 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1744#endif
1745 ret->sid_ctx_length=0;
1746 ret->default_verify_callback=NULL;
1747 if ((ret->cert=ssl_cert_new()) == NULL)
1748 goto err;
1749
1750 ret->default_passwd_callback=0;
1751 ret->default_passwd_callback_userdata=NULL;
1752 ret->client_cert_cb=0;
1753 ret->app_gen_cookie_cb=0;
1754 ret->app_verify_cookie_cb=0;
1755
1756 ret->sessions=lh_SSL_SESSION_new();
1757 if (ret->sessions == NULL) goto err;
1758 ret->cert_store=X509_STORE_new();
1759 if (ret->cert_store == NULL) goto err;
1760
1761 ssl_create_cipher_list(ret->method,
1762 &ret->cipher_list,&ret->cipher_list_by_id,
1763 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
1764 if (ret->cipher_list == NULL
1765 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1766 {
1767 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1768 goto err2;
1769 }
1770
1771 ret->param = X509_VERIFY_PARAM_new();
1772 if (!ret->param)
1773 goto err;
1774
1775 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1776 {
1777 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1778 goto err2;
1779 }
1780 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1781 {
1782 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1783 goto err2;
1784 }
1785 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1786 {
1787 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1788 goto err2;
1789 }
1790
1791 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1792 goto err;
1793
1794 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1795
1796 ret->extra_certs=NULL;
1797 /* No compression for DTLS */
1798 if (meth->version != DTLS1_VERSION)
1799 ret->comp_methods=SSL_COMP_get_compression_methods();
1800
1801 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1802
1803#ifndef OPENSSL_NO_TLSEXT
1804 ret->tlsext_servername_callback = 0;
1805 ret->tlsext_servername_arg = NULL;
1806 /* Setup RFC4507 ticket keys */
1807 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1808 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1809 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1810 ret->options |= SSL_OP_NO_TICKET;
1811
1812 ret->tlsext_status_cb = 0;
1813 ret->tlsext_status_arg = NULL;
1814
1815# ifndef OPENSSL_NO_NEXTPROTONEG
1816 ret->next_protos_advertised_cb = 0;
1817 ret->next_proto_select_cb = 0;
1818# endif
1819#endif
1820#ifndef OPENSSL_NO_PSK
1821 ret->psk_identity_hint=NULL;
1822 ret->psk_client_callback=NULL;
1823 ret->psk_server_callback=NULL;
1824#endif
1825#ifndef OPENSSL_NO_SRP
1826 SSL_CTX_SRP_CTX_init(ret);
1827#endif
1828#ifndef OPENSSL_NO_BUF_FREELISTS
1829 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT;
1830 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1831 if (!ret->rbuf_freelist)
1832 goto err;
1833 ret->rbuf_freelist->chunklen = 0;
1834 ret->rbuf_freelist->len = 0;
1835 ret->rbuf_freelist->head = NULL;
1836 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1837 if (!ret->wbuf_freelist)
1838 {
1839 OPENSSL_free(ret->rbuf_freelist);
1840 goto err;
1841 }
1842 ret->wbuf_freelist->chunklen = 0;
1843 ret->wbuf_freelist->len = 0;
1844 ret->wbuf_freelist->head = NULL;
1845#endif
1846#ifndef OPENSSL_NO_ENGINE
1847 ret->client_cert_engine = NULL;
1848#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
1849#define eng_strx(x) #x
1850#define eng_str(x) eng_strx(x)
1851 /* Use specific client engine automatically... ignore errors */
1852 {
1853 ENGINE *eng;
1854 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1855 if (!eng)
1856 {
1857 ERR_clear_error();
1858 ENGINE_load_builtin_engines();
1859 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1860 }
1861 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
1862 ERR_clear_error();
1863 }
1864#endif
1865#endif
1866 /* Default is to connect to non-RI servers. When RI is more widely
1867 * deployed might change this.
1868 */
1869 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
1870
1871 return(ret);
1872err:
1873 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1874err2:
1875 if (ret != NULL) SSL_CTX_free(ret);
1876 return(NULL);
1877 }
1878
1879#if 0
1880static void SSL_COMP_free(SSL_COMP *comp)
1881 { OPENSSL_free(comp); }
1882#endif
1883
1884#ifndef OPENSSL_NO_BUF_FREELISTS
1885static void
1886ssl_buf_freelist_free(SSL3_BUF_FREELIST *list)
1887 {
1888 SSL3_BUF_FREELIST_ENTRY *ent, *next;
1889 for (ent = list->head; ent; ent = next)
1890 {
1891 next = ent->next;
1892 OPENSSL_free(ent);
1893 }
1894 OPENSSL_free(list);
1895 }
1896#endif
1897
1898void SSL_CTX_free(SSL_CTX *a)
1899 {
1900 int i;
1901
1902 if (a == NULL) return;
1903
1904 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1905#ifdef REF_PRINT
1906 REF_PRINT("SSL_CTX",a);
1907#endif
1908 if (i > 0) return;
1909#ifdef REF_CHECK
1910 if (i < 0)
1911 {
1912 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1913 abort(); /* ok */
1914 }
1915#endif
1916
1917 if (a->param)
1918 X509_VERIFY_PARAM_free(a->param);
1919
1920 /*
1921 * Free internal session cache. However: the remove_cb() may reference
1922 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1923 * after the sessions were flushed.
1924 * As the ex_data handling routines might also touch the session cache,
1925 * the most secure solution seems to be: empty (flush) the cache, then
1926 * free ex_data, then finally free the cache.
1927 * (See ticket [openssl.org #212].)
1928 */
1929 if (a->sessions != NULL)
1930 SSL_CTX_flush_sessions(a,0);
1931
1932 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1933
1934 if (a->sessions != NULL)
1935 lh_SSL_SESSION_free(a->sessions);
1936
1937 if (a->cert_store != NULL)
1938 X509_STORE_free(a->cert_store);
1939 if (a->cipher_list != NULL)
1940 sk_SSL_CIPHER_free(a->cipher_list);
1941 if (a->cipher_list_by_id != NULL)
1942 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1943 if (a->cert != NULL)
1944 ssl_cert_free(a->cert);
1945 if (a->client_CA != NULL)
1946 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1947 if (a->extra_certs != NULL)
1948 sk_X509_pop_free(a->extra_certs,X509_free);
1949#if 0 /* This should never be done, since it removes a global database */
1950 if (a->comp_methods != NULL)
1951 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1952#else
1953 a->comp_methods = NULL;
1954#endif
1955
1956#ifndef OPENSSL_NO_SRTP
1957 if (a->srtp_profiles)
1958 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
1959#endif
1960
1961#ifndef OPENSSL_NO_PSK
1962 if (a->psk_identity_hint)
1963 OPENSSL_free(a->psk_identity_hint);
1964#endif
1965#ifndef OPENSSL_NO_SRP
1966 SSL_CTX_SRP_CTX_free(a);
1967#endif
1968#ifndef OPENSSL_NO_ENGINE
1969 if (a->client_cert_engine)
1970 ENGINE_finish(a->client_cert_engine);
1971#endif
1972
1973#ifndef OPENSSL_NO_BUF_FREELISTS
1974 if (a->wbuf_freelist)
1975 ssl_buf_freelist_free(a->wbuf_freelist);
1976 if (a->rbuf_freelist)
1977 ssl_buf_freelist_free(a->rbuf_freelist);
1978#endif
1979
1980 OPENSSL_free(a);
1981 }
1982
1983void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1984 {
1985 ctx->default_passwd_callback=cb;
1986 }
1987
1988void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1989 {
1990 ctx->default_passwd_callback_userdata=u;
1991 }
1992
1993void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
1994 {
1995 ctx->app_verify_callback=cb;
1996 ctx->app_verify_arg=arg;
1997 }
1998
1999void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
2000 {
2001 ctx->verify_mode=mode;
2002 ctx->default_verify_callback=cb;
2003 }
2004
2005void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
2006 {
2007 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2008 }
2009
2010void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2011 {
2012 CERT_PKEY *cpk;
2013 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
2014 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
2015 int rsa_tmp_export,dh_tmp_export,kl;
2016 unsigned long mask_k,mask_a,emask_k,emask_a;
2017 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size;
2018#ifndef OPENSSL_NO_ECDH
2019 int have_ecdh_tmp;
2020#endif
2021 X509 *x = NULL;
2022 EVP_PKEY *ecc_pkey = NULL;
2023 int signature_nid = 0, pk_nid = 0, md_nid = 0;
2024
2025 if (c == NULL) return;
2026
2027 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
2028
2029#ifndef OPENSSL_NO_RSA
2030 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
2031 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
2032 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
2033#else
2034 rsa_tmp=rsa_tmp_export=0;
2035#endif
2036#ifndef OPENSSL_NO_DH
2037 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
2038 dh_tmp_export=(c->dh_tmp_cb != NULL ||
2039 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
2040#else
2041 dh_tmp=dh_tmp_export=0;
2042#endif
2043
2044#ifndef OPENSSL_NO_ECDH
2045 have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL);
2046#endif
2047 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
2048 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
2049 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2050 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2051 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
2052 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2053 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
2054 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
2055 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
2056 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2057 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
2058/* FIX THIS EAY EAY EAY */
2059 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
2060 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2061 cpk= &(c->pkeys[SSL_PKEY_ECC]);
2062 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL);
2063 mask_k=0;
2064 mask_a=0;
2065 emask_k=0;
2066 emask_a=0;
2067
2068
2069
2070#ifdef CIPHER_DEBUG
2071 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2072 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp,
2073 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
2074#endif
2075
2076 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2077 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
2078 mask_k |= SSL_kGOST;
2079 mask_a |= SSL_aGOST01;
2080 }
2081 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
2082 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
2083 mask_k |= SSL_kGOST;
2084 mask_a |= SSL_aGOST94;
2085 }
2086
2087 if (rsa_enc || (rsa_tmp && rsa_sign))
2088 mask_k|=SSL_kRSA;
2089 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2090 emask_k|=SSL_kRSA;
2091
2092#if 0
2093 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
2094 if ( (dh_tmp || dh_rsa || dh_dsa) &&
2095 (rsa_enc || rsa_sign || dsa_sign))
2096 mask_k|=SSL_kEDH;
2097 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
2098 (rsa_enc || rsa_sign || dsa_sign))
2099 emask_k|=SSL_kEDH;
2100#endif
2101
2102 if (dh_tmp_export)
2103 emask_k|=SSL_kEDH;
2104
2105 if (dh_tmp)
2106 mask_k|=SSL_kEDH;
2107
2108 if (dh_rsa) mask_k|=SSL_kDHr;
2109 if (dh_rsa_export) emask_k|=SSL_kDHr;
2110
2111 if (dh_dsa) mask_k|=SSL_kDHd;
2112 if (dh_dsa_export) emask_k|=SSL_kDHd;
2113
2114 if (rsa_enc || rsa_sign)
2115 {
2116 mask_a|=SSL_aRSA;
2117 emask_a|=SSL_aRSA;
2118 }
2119
2120 if (dsa_sign)
2121 {
2122 mask_a|=SSL_aDSS;
2123 emask_a|=SSL_aDSS;
2124 }
2125
2126 mask_a|=SSL_aNULL;
2127 emask_a|=SSL_aNULL;
2128
2129#ifndef OPENSSL_NO_KRB5
2130 mask_k|=SSL_kKRB5;
2131 mask_a|=SSL_aKRB5;
2132 emask_k|=SSL_kKRB5;
2133 emask_a|=SSL_aKRB5;
2134#endif
2135
2136 /* An ECC certificate may be usable for ECDH and/or
2137 * ECDSA cipher suites depending on the key usage extension.
2138 */
2139 if (have_ecc_cert)
2140 {
2141 /* This call populates extension flags (ex_flags) */
2142 x = (c->pkeys[SSL_PKEY_ECC]).x509;
2143 X509_check_purpose(x, -1, 0);
2144 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2145 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
2146 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2147 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
2148 ecc_pkey = X509_get_pubkey(x);
2149 ecc_pkey_size = (ecc_pkey != NULL) ?
2150 EVP_PKEY_bits(ecc_pkey) : 0;
2151 EVP_PKEY_free(ecc_pkey);
2152 if ((x->sig_alg) && (x->sig_alg->algorithm))
2153 {
2154 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2155 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2156 }
2157#ifndef OPENSSL_NO_ECDH
2158 if (ecdh_ok)
2159 {
2160
2161 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa)
2162 {
2163 mask_k|=SSL_kECDHr;
2164 mask_a|=SSL_aECDH;
2165 if (ecc_pkey_size <= 163)
2166 {
2167 emask_k|=SSL_kECDHr;
2168 emask_a|=SSL_aECDH;
2169 }
2170 }
2171
2172 if (pk_nid == NID_X9_62_id_ecPublicKey)
2173 {
2174 mask_k|=SSL_kECDHe;
2175 mask_a|=SSL_aECDH;
2176 if (ecc_pkey_size <= 163)
2177 {
2178 emask_k|=SSL_kECDHe;
2179 emask_a|=SSL_aECDH;
2180 }
2181 }
2182 }
2183#endif
2184#ifndef OPENSSL_NO_ECDSA
2185 if (ecdsa_ok)
2186 {
2187 mask_a|=SSL_aECDSA;
2188 emask_a|=SSL_aECDSA;
2189 }
2190#endif
2191 }
2192
2193#ifndef OPENSSL_NO_ECDH
2194 if (have_ecdh_tmp)
2195 {
2196 mask_k|=SSL_kEECDH;
2197 emask_k|=SSL_kEECDH;
2198 }
2199#endif
2200
2201#ifndef OPENSSL_NO_PSK
2202 mask_k |= SSL_kPSK;
2203 mask_a |= SSL_aPSK;
2204 emask_k |= SSL_kPSK;
2205 emask_a |= SSL_aPSK;
2206#endif
2207
2208 c->mask_k=mask_k;
2209 c->mask_a=mask_a;
2210 c->export_mask_k=emask_k;
2211 c->export_mask_a=emask_a;
2212 c->valid=1;
2213 }
2214
2215/* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2216#define ku_reject(x, usage) \
2217 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2218
2219#ifndef OPENSSL_NO_EC
2220
2221int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2222 {
2223 unsigned long alg_k, alg_a;
2224 EVP_PKEY *pkey = NULL;
2225 int keysize = 0;
2226 int signature_nid = 0, md_nid = 0, pk_nid = 0;
2227 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2228
2229 alg_k = cs->algorithm_mkey;
2230 alg_a = cs->algorithm_auth;
2231
2232 if (SSL_C_IS_EXPORT(cs))
2233 {
2234 /* ECDH key length in export ciphers must be <= 163 bits */
2235 pkey = X509_get_pubkey(x);
2236 if (pkey == NULL) return 0;
2237 keysize = EVP_PKEY_bits(pkey);
2238 EVP_PKEY_free(pkey);
2239 if (keysize > 163) return 0;
2240 }
2241
2242 /* This call populates the ex_flags field correctly */
2243 X509_check_purpose(x, -1, 0);
2244 if ((x->sig_alg) && (x->sig_alg->algorithm))
2245 {
2246 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2247 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2248 }
2249 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr)
2250 {
2251 /* key usage, if present, must allow key agreement */
2252 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT))
2253 {
2254 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2255 return 0;
2256 }
2257 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION)
2258 {
2259 /* signature alg must be ECDSA */
2260 if (pk_nid != NID_X9_62_id_ecPublicKey)
2261 {
2262 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2263 return 0;
2264 }
2265 }
2266 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION)
2267 {
2268 /* signature alg must be RSA */
2269
2270 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa)
2271 {
2272 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2273 return 0;
2274 }
2275 }
2276 }
2277 if (alg_a & SSL_aECDSA)
2278 {
2279 /* key usage, if present, must allow signing */
2280 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE))
2281 {
2282 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2283 return 0;
2284 }
2285 }
2286
2287 return 1; /* all checks are ok */
2288 }
2289
2290#endif
2291
2292/* THIS NEEDS CLEANING UP */
2293CERT_PKEY *ssl_get_server_send_pkey(const SSL *s)
2294 {
2295 unsigned long alg_k,alg_a;
2296 CERT *c;
2297 int i;
2298
2299 c=s->cert;
2300 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2301
2302 alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
2303 alg_a = s->s3->tmp.new_cipher->algorithm_auth;
2304
2305 if (alg_k & (SSL_kECDHr|SSL_kECDHe))
2306 {
2307 /* we don't need to look at SSL_kEECDH
2308 * since no certificate is needed for
2309 * anon ECDH and for authenticated
2310 * EECDH, the check for the auth
2311 * algorithm will set i correctly
2312 * NOTE: For ECDH-RSA, we need an ECC
2313 * not an RSA cert but for EECDH-RSA
2314 * we need an RSA cert. Placing the
2315 * checks for SSL_kECDH before RSA
2316 * checks ensures the correct cert is chosen.
2317 */
2318 i=SSL_PKEY_ECC;
2319 }
2320 else if (alg_a & SSL_aECDSA)
2321 {
2322 i=SSL_PKEY_ECC;
2323 }
2324 else if (alg_k & SSL_kDHr)
2325 i=SSL_PKEY_DH_RSA;
2326 else if (alg_k & SSL_kDHd)
2327 i=SSL_PKEY_DH_DSA;
2328 else if (alg_a & SSL_aDSS)
2329 i=SSL_PKEY_DSA_SIGN;
2330 else if (alg_a & SSL_aRSA)
2331 {
2332 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
2333 i=SSL_PKEY_RSA_SIGN;
2334 else
2335 i=SSL_PKEY_RSA_ENC;
2336 }
2337 else if (alg_a & SSL_aKRB5)
2338 {
2339 /* VRS something else here? */
2340 return(NULL);
2341 }
2342 else if (alg_a & SSL_aGOST94)
2343 i=SSL_PKEY_GOST94;
2344 else if (alg_a & SSL_aGOST01)
2345 i=SSL_PKEY_GOST01;
2346 else /* if (alg_a & SSL_aNULL) */
2347 {
2348 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY,ERR_R_INTERNAL_ERROR);
2349 return(NULL);
2350 }
2351
2352 return c->pkeys + i;
2353 }
2354
2355X509 *ssl_get_server_send_cert(const SSL *s)
2356 {
2357 CERT_PKEY *cpk;
2358 cpk = ssl_get_server_send_pkey(s);
2359 if (!cpk)
2360 return NULL;
2361 return cpk->x509;
2362 }
2363
2364EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher, const EVP_MD **pmd)
2365 {
2366 unsigned long alg_a;
2367 CERT *c;
2368 int idx = -1;
2369
2370 alg_a = cipher->algorithm_auth;
2371 c=s->cert;
2372
2373 if ((alg_a & SSL_aDSS) &&
2374 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2375 idx = SSL_PKEY_DSA_SIGN;
2376 else if (alg_a & SSL_aRSA)
2377 {
2378 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2379 idx = SSL_PKEY_RSA_SIGN;
2380 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2381 idx = SSL_PKEY_RSA_ENC;
2382 }
2383 else if ((alg_a & SSL_aECDSA) &&
2384 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2385 idx = SSL_PKEY_ECC;
2386 if (idx == -1)
2387 {
2388 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
2389 return(NULL);
2390 }
2391 if (pmd)
2392 *pmd = c->pkeys[idx].digest;
2393 return c->pkeys[idx].privatekey;
2394 }
2395
2396void ssl_update_cache(SSL *s,int mode)
2397 {
2398 int i;
2399
2400 /* If the session_id_length is 0, we are not supposed to cache it,
2401 * and it would be rather hard to do anyway :-) */
2402 if (s->session->session_id_length == 0) return;
2403
2404 i=s->session_ctx->session_cache_mode;
2405 if ((i & mode) && (!s->hit)
2406 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2407 || SSL_CTX_add_session(s->session_ctx,s->session))
2408 && (s->session_ctx->new_session_cb != NULL))
2409 {
2410 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
2411 if (!s->session_ctx->new_session_cb(s,s->session))
2412 SSL_SESSION_free(s->session);
2413 }
2414
2415 /* auto flush every 255 connections */
2416 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
2417 ((i & mode) == mode))
2418 {
2419 if ( (((mode & SSL_SESS_CACHE_CLIENT)
2420 ?s->session_ctx->stats.sess_connect_good
2421 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff)
2422 {
2423 SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL));
2424 }
2425 }
2426 }
2427
2428const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2429 {
2430 return(s->method);
2431 }
2432
2433int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2434 {
2435 int conn= -1;
2436 int ret=1;
2437
2438 if (s->method != meth)
2439 {
2440 if (s->handshake_func != NULL)
2441 conn=(s->handshake_func == s->method->ssl_connect);
2442
2443 if (s->method->version == meth->version)
2444 s->method=meth;
2445 else
2446 {
2447 s->method->ssl_free(s);
2448 s->method=meth;
2449 ret=s->method->ssl_new(s);
2450 }
2451
2452 if (conn == 1)
2453 s->handshake_func=meth->ssl_connect;
2454 else if (conn == 0)
2455 s->handshake_func=meth->ssl_accept;
2456 }
2457 return(ret);
2458 }
2459
2460int SSL_get_error(const SSL *s,int i)
2461 {
2462 int reason;
2463 unsigned long l;
2464 BIO *bio;
2465
2466 if (i > 0) return(SSL_ERROR_NONE);
2467
2468 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
2469 * etc, where we do encode the error */
2470 if ((l=ERR_peek_error()) != 0)
2471 {
2472 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2473 return(SSL_ERROR_SYSCALL);
2474 else
2475 return(SSL_ERROR_SSL);
2476 }
2477
2478 if ((i < 0) && SSL_want_read(s))
2479 {
2480 bio=SSL_get_rbio(s);
2481 if (BIO_should_read(bio))
2482 return(SSL_ERROR_WANT_READ);
2483 else if (BIO_should_write(bio))
2484 /* This one doesn't make too much sense ... We never try
2485 * to write to the rbio, and an application program where
2486 * rbio and wbio are separate couldn't even know what it
2487 * should wait for.
2488 * However if we ever set s->rwstate incorrectly
2489 * (so that we have SSL_want_read(s) instead of
2490 * SSL_want_write(s)) and rbio and wbio *are* the same,
2491 * this test works around that bug; so it might be safer
2492 * to keep it. */
2493 return(SSL_ERROR_WANT_WRITE);
2494 else if (BIO_should_io_special(bio))
2495 {
2496 reason=BIO_get_retry_reason(bio);
2497 if (reason == BIO_RR_CONNECT)
2498 return(SSL_ERROR_WANT_CONNECT);
2499 else if (reason == BIO_RR_ACCEPT)
2500 return(SSL_ERROR_WANT_ACCEPT);
2501 else
2502 return(SSL_ERROR_SYSCALL); /* unknown */
2503 }
2504 }
2505
2506 if ((i < 0) && SSL_want_write(s))
2507 {
2508 bio=SSL_get_wbio(s);
2509 if (BIO_should_write(bio))
2510 return(SSL_ERROR_WANT_WRITE);
2511 else if (BIO_should_read(bio))
2512 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
2513 return(SSL_ERROR_WANT_READ);
2514 else if (BIO_should_io_special(bio))
2515 {
2516 reason=BIO_get_retry_reason(bio);
2517 if (reason == BIO_RR_CONNECT)
2518 return(SSL_ERROR_WANT_CONNECT);
2519 else if (reason == BIO_RR_ACCEPT)
2520 return(SSL_ERROR_WANT_ACCEPT);
2521 else
2522 return(SSL_ERROR_SYSCALL);
2523 }
2524 }
2525 if ((i < 0) && SSL_want_x509_lookup(s))
2526 {
2527 return(SSL_ERROR_WANT_X509_LOOKUP);
2528 }
2529
2530 if (i == 0)
2531 {
2532 if (s->version == SSL2_VERSION)
2533 {
2534 /* assume it is the socket being closed */
2535 return(SSL_ERROR_ZERO_RETURN);
2536 }
2537 else
2538 {
2539 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2540 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2541 return(SSL_ERROR_ZERO_RETURN);
2542 }
2543 }
2544 return(SSL_ERROR_SYSCALL);
2545 }
2546
2547int SSL_do_handshake(SSL *s)
2548 {
2549 int ret=1;
2550
2551 if (s->handshake_func == NULL)
2552 {
2553 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
2554 return(-1);
2555 }
2556
2557 s->method->ssl_renegotiate_check(s);
2558
2559 if (SSL_in_init(s) || SSL_in_before(s))
2560 {
2561 ret=s->handshake_func(s);
2562 }
2563 return(ret);
2564 }
2565
2566/* For the next 2 functions, SSL_clear() sets shutdown and so
2567 * one of these calls will reset it */
2568void SSL_set_accept_state(SSL *s)
2569 {
2570 s->server=1;
2571 s->shutdown=0;
2572 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
2573 s->handshake_func=s->method->ssl_accept;
2574 /* clear the current cipher */
2575 ssl_clear_cipher_ctx(s);
2576 ssl_clear_hash_ctx(&s->read_hash);
2577 ssl_clear_hash_ctx(&s->write_hash);
2578 }
2579
2580void SSL_set_connect_state(SSL *s)
2581 {
2582 s->server=0;
2583 s->shutdown=0;
2584 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
2585 s->handshake_func=s->method->ssl_connect;
2586 /* clear the current cipher */
2587 ssl_clear_cipher_ctx(s);
2588 ssl_clear_hash_ctx(&s->read_hash);
2589 ssl_clear_hash_ctx(&s->write_hash);
2590 }
2591
2592int ssl_undefined_function(SSL *s)
2593 {
2594 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2595 return(0);
2596 }
2597
2598int ssl_undefined_void_function(void)
2599 {
2600 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2601 return(0);
2602 }
2603
2604int ssl_undefined_const_function(const SSL *s)
2605 {
2606 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2607 return(0);
2608 }
2609
2610SSL_METHOD *ssl_bad_method(int ver)
2611 {
2612 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2613 return(NULL);
2614 }
2615
2616const char *SSL_get_version(const SSL *s)
2617 {
2618 if (s->version == TLS1_2_VERSION)
2619 return("TLSv1.2");
2620 else if (s->version == TLS1_1_VERSION)
2621 return("TLSv1.1");
2622 else if (s->version == TLS1_VERSION)
2623 return("TLSv1");
2624 else if (s->version == SSL3_VERSION)
2625 return("SSLv3");
2626 else if (s->version == SSL2_VERSION)
2627 return("SSLv2");
2628 else
2629 return("unknown");
2630 }
2631
2632SSL *SSL_dup(SSL *s)
2633 {
2634 STACK_OF(X509_NAME) *sk;
2635 X509_NAME *xn;
2636 SSL *ret;
2637 int i;
2638
2639 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2640 return(NULL);
2641
2642 ret->version = s->version;
2643 ret->type = s->type;
2644 ret->method = s->method;
2645
2646 if (s->session != NULL)
2647 {
2648 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2649 SSL_copy_session_id(ret,s);
2650 }
2651 else
2652 {
2653 /* No session has been established yet, so we have to expect
2654 * that s->cert or ret->cert will be changed later --
2655 * they should not both point to the same object,
2656 * and thus we can't use SSL_copy_session_id. */
2657
2658 ret->method->ssl_free(ret);
2659 ret->method = s->method;
2660 ret->method->ssl_new(ret);
2661
2662 if (s->cert != NULL)
2663 {
2664 if (ret->cert != NULL)
2665 {
2666 ssl_cert_free(ret->cert);
2667 }
2668 ret->cert = ssl_cert_dup(s->cert);
2669 if (ret->cert == NULL)
2670 goto err;
2671 }
2672
2673 SSL_set_session_id_context(ret,
2674 s->sid_ctx, s->sid_ctx_length);
2675 }
2676
2677 ret->options=s->options;
2678 ret->mode=s->mode;
2679 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
2680 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
2681 ret->msg_callback = s->msg_callback;
2682 ret->msg_callback_arg = s->msg_callback_arg;
2683 SSL_set_verify(ret,SSL_get_verify_mode(s),
2684 SSL_get_verify_callback(s));
2685 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
2686 ret->generate_session_id = s->generate_session_id;
2687
2688 SSL_set_info_callback(ret,SSL_get_info_callback(s));
2689
2690 ret->debug=s->debug;
2691
2692 /* copy app data, a little dangerous perhaps */
2693 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2694 goto err;
2695
2696 /* setup rbio, and wbio */
2697 if (s->rbio != NULL)
2698 {
2699 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
2700 goto err;
2701 }
2702 if (s->wbio != NULL)
2703 {
2704 if (s->wbio != s->rbio)
2705 {
2706 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
2707 goto err;
2708 }
2709 else
2710 ret->wbio=ret->rbio;
2711 }
2712 ret->rwstate = s->rwstate;
2713 ret->in_handshake = s->in_handshake;
2714 ret->handshake_func = s->handshake_func;
2715 ret->server = s->server;
2716 ret->renegotiate = s->renegotiate;
2717 ret->new_session = s->new_session;
2718 ret->quiet_shutdown = s->quiet_shutdown;
2719 ret->shutdown=s->shutdown;
2720 ret->state=s->state; /* SSL_dup does not really work at any state, though */
2721 ret->rstate=s->rstate;
2722 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
2723 ret->hit=s->hit;
2724
2725 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2726
2727 /* dup the cipher_list and cipher_list_by_id stacks */
2728 if (s->cipher_list != NULL)
2729 {
2730 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2731 goto err;
2732 }
2733 if (s->cipher_list_by_id != NULL)
2734 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2735 == NULL)
2736 goto err;
2737
2738 /* Dup the client_CA list */
2739 if (s->client_CA != NULL)
2740 {
2741 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
2742 ret->client_CA=sk;
2743 for (i=0; i<sk_X509_NAME_num(sk); i++)
2744 {
2745 xn=sk_X509_NAME_value(sk,i);
2746 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
2747 {
2748 X509_NAME_free(xn);
2749 goto err;
2750 }
2751 }
2752 }
2753
2754 if (0)
2755 {
2756err:
2757 if (ret != NULL) SSL_free(ret);
2758 ret=NULL;
2759 }
2760 return(ret);
2761 }
2762
2763void ssl_clear_cipher_ctx(SSL *s)
2764 {
2765 if (s->enc_read_ctx != NULL)
2766 {
2767 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2768 OPENSSL_free(s->enc_read_ctx);
2769 s->enc_read_ctx=NULL;
2770 }
2771 if (s->enc_write_ctx != NULL)
2772 {
2773 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2774 OPENSSL_free(s->enc_write_ctx);
2775 s->enc_write_ctx=NULL;
2776 }
2777#ifndef OPENSSL_NO_COMP
2778 if (s->expand != NULL)
2779 {
2780 COMP_CTX_free(s->expand);
2781 s->expand=NULL;
2782 }
2783 if (s->compress != NULL)
2784 {
2785 COMP_CTX_free(s->compress);
2786 s->compress=NULL;
2787 }
2788#endif
2789 }
2790
2791/* Fix this function so that it takes an optional type parameter */
2792X509 *SSL_get_certificate(const SSL *s)
2793 {
2794 if (s->cert != NULL)
2795 return(s->cert->key->x509);
2796 else
2797 return(NULL);
2798 }
2799
2800/* Fix this function so that it takes an optional type parameter */
2801EVP_PKEY *SSL_get_privatekey(SSL *s)
2802 {
2803 if (s->cert != NULL)
2804 return(s->cert->key->privatekey);
2805 else
2806 return(NULL);
2807 }
2808
2809const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2810 {
2811 if ((s->session != NULL) && (s->session->cipher != NULL))
2812 return(s->session->cipher);
2813 return(NULL);
2814 }
2815#ifdef OPENSSL_NO_COMP
2816const void *SSL_get_current_compression(SSL *s)
2817 {
2818 return NULL;
2819 }
2820const void *SSL_get_current_expansion(SSL *s)
2821 {
2822 return NULL;
2823 }
2824#else
2825
2826const COMP_METHOD *SSL_get_current_compression(SSL *s)
2827 {
2828 if (s->compress != NULL)
2829 return(s->compress->meth);
2830 return(NULL);
2831 }
2832
2833const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2834 {
2835 if (s->expand != NULL)
2836 return(s->expand->meth);
2837 return(NULL);
2838 }
2839#endif
2840
2841int ssl_init_wbio_buffer(SSL *s,int push)
2842 {
2843 BIO *bbio;
2844
2845 if (s->bbio == NULL)
2846 {
2847 bbio=BIO_new(BIO_f_buffer());
2848 if (bbio == NULL) return(0);
2849 s->bbio=bbio;
2850 }
2851 else
2852 {
2853 bbio=s->bbio;
2854 if (s->bbio == s->wbio)
2855 s->wbio=BIO_pop(s->wbio);
2856 }
2857 (void)BIO_reset(bbio);
2858/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2859 if (!BIO_set_read_buffer_size(bbio,1))
2860 {
2861 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
2862 return(0);
2863 }
2864 if (push)
2865 {
2866 if (s->wbio != bbio)
2867 s->wbio=BIO_push(bbio,s->wbio);
2868 }
2869 else
2870 {
2871 if (s->wbio == bbio)
2872 s->wbio=BIO_pop(bbio);
2873 }
2874 return(1);
2875 }
2876
2877void ssl_free_wbio_buffer(SSL *s)
2878 {
2879 if (s->bbio == NULL) return;
2880
2881 if (s->bbio == s->wbio)
2882 {
2883 /* remove buffering */
2884 s->wbio=BIO_pop(s->wbio);
2885#ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
2886 assert(s->wbio != NULL);
2887#endif
2888 }
2889 BIO_free(s->bbio);
2890 s->bbio=NULL;
2891 }
2892
2893void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
2894 {
2895 ctx->quiet_shutdown=mode;
2896 }
2897
2898int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2899 {
2900 return(ctx->quiet_shutdown);
2901 }
2902
2903void SSL_set_quiet_shutdown(SSL *s,int mode)
2904 {
2905 s->quiet_shutdown=mode;
2906 }
2907
2908int SSL_get_quiet_shutdown(const SSL *s)
2909 {
2910 return(s->quiet_shutdown);
2911 }
2912
2913void SSL_set_shutdown(SSL *s,int mode)
2914 {
2915 s->shutdown=mode;
2916 }
2917
2918int SSL_get_shutdown(const SSL *s)
2919 {
2920 return(s->shutdown);
2921 }
2922
2923int SSL_version(const SSL *s)
2924 {
2925 return(s->version);
2926 }
2927
2928SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2929 {
2930 return(ssl->ctx);
2931 }
2932
2933SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx)
2934 {
2935 if (ssl->ctx == ctx)
2936 return ssl->ctx;
2937#ifndef OPENSSL_NO_TLSEXT
2938 if (ctx == NULL)
2939 ctx = ssl->initial_ctx;
2940#endif
2941 if (ssl->cert != NULL)
2942 ssl_cert_free(ssl->cert);
2943 ssl->cert = ssl_cert_dup(ctx->cert);
2944 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
2945 if (ssl->ctx != NULL)
2946 SSL_CTX_free(ssl->ctx); /* decrement reference count */
2947 ssl->ctx = ctx;
2948 return(ssl->ctx);
2949 }
2950
2951#ifndef OPENSSL_NO_STDIO
2952int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2953 {
2954 return(X509_STORE_set_default_paths(ctx->cert_store));
2955 }
2956
2957int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2958 const char *CApath)
2959 {
2960 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2961 }
2962#endif
2963
2964void SSL_set_info_callback(SSL *ssl,
2965 void (*cb)(const SSL *ssl,int type,int val))
2966 {
2967 ssl->info_callback=cb;
2968 }
2969
2970/* One compiler (Diab DCC) doesn't like argument names in returned
2971 function pointer. */
2972void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/)
2973 {
2974 return ssl->info_callback;
2975 }
2976
2977int SSL_state(const SSL *ssl)
2978 {
2979 return(ssl->state);
2980 }
2981
2982void SSL_set_state(SSL *ssl, int state)
2983 {
2984 ssl->state = state;
2985 }
2986
2987void SSL_set_verify_result(SSL *ssl,long arg)
2988 {
2989 ssl->verify_result=arg;
2990 }
2991
2992long SSL_get_verify_result(const SSL *ssl)
2993 {
2994 return(ssl->verify_result);
2995 }
2996
2997int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2998 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2999 {
3000 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
3001 new_func, dup_func, free_func);
3002 }
3003
3004int SSL_set_ex_data(SSL *s,int idx,void *arg)
3005 {
3006 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
3007 }
3008
3009void *SSL_get_ex_data(const SSL *s,int idx)
3010 {
3011 return(CRYPTO_get_ex_data(&s->ex_data,idx));
3012 }
3013
3014int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
3015 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
3016 {
3017 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
3018 new_func, dup_func, free_func);
3019 }
3020
3021int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
3022 {
3023 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
3024 }
3025
3026void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx)
3027 {
3028 return(CRYPTO_get_ex_data(&s->ex_data,idx));
3029 }
3030
3031int ssl_ok(SSL *s)
3032 {
3033 return(1);
3034 }
3035
3036X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3037 {
3038 return(ctx->cert_store);
3039 }
3040
3041void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
3042 {
3043 if (ctx->cert_store != NULL)
3044 X509_STORE_free(ctx->cert_store);
3045 ctx->cert_store=store;
3046 }
3047
3048int SSL_want(const SSL *s)
3049 {
3050 return(s->rwstate);
3051 }
3052
3053/*!
3054 * \brief Set the callback for generating temporary RSA keys.
3055 * \param ctx the SSL context.
3056 * \param cb the callback
3057 */
3058
3059#ifndef OPENSSL_NO_RSA
3060void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
3061 int is_export,
3062 int keylength))
3063 {
3064 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
3065 }
3066
3067void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
3068 int is_export,
3069 int keylength))
3070 {
3071 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
3072 }
3073#endif
3074
3075#ifdef DOXYGEN
3076/*!
3077 * \brief The RSA temporary key callback function.
3078 * \param ssl the SSL session.
3079 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3080 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3081 * of the required key in bits.
3082 * \return the temporary RSA key.
3083 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3084 */
3085
3086RSA *cb(SSL *ssl,int is_export,int keylength)
3087 {}
3088#endif
3089
3090/*!
3091 * \brief Set the callback for generating temporary DH keys.
3092 * \param ctx the SSL context.
3093 * \param dh the callback
3094 */
3095
3096#ifndef OPENSSL_NO_DH
3097void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
3098 int keylength))
3099 {
3100 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
3101 }
3102
3103void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
3104 int keylength))
3105 {
3106 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
3107 }
3108#endif
3109
3110#ifndef OPENSSL_NO_ECDH
3111void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
3112 int keylength))
3113 {
3114 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
3115 }
3116
3117void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
3118 int keylength))
3119 {
3120 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
3121 }
3122#endif
3123
3124#ifndef OPENSSL_NO_PSK
3125int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3126 {
3127 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
3128 {
3129 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3130 return 0;
3131 }
3132 if (ctx->psk_identity_hint != NULL)
3133 OPENSSL_free(ctx->psk_identity_hint);
3134 if (identity_hint != NULL)
3135 {
3136 ctx->psk_identity_hint = BUF_strdup(identity_hint);
3137 if (ctx->psk_identity_hint == NULL)
3138 return 0;
3139 }
3140 else
3141 ctx->psk_identity_hint = NULL;
3142 return 1;
3143 }
3144
3145int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3146 {
3147 if (s == NULL)
3148 return 0;
3149
3150 if (s->session == NULL)
3151 return 1; /* session not created yet, ignored */
3152
3153 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
3154 {
3155 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3156 return 0;
3157 }
3158 if (s->session->psk_identity_hint != NULL)
3159 OPENSSL_free(s->session->psk_identity_hint);
3160 if (identity_hint != NULL)
3161 {
3162 s->session->psk_identity_hint = BUF_strdup(identity_hint);
3163 if (s->session->psk_identity_hint == NULL)
3164 return 0;
3165 }
3166 else
3167 s->session->psk_identity_hint = NULL;
3168 return 1;
3169 }
3170
3171const char *SSL_get_psk_identity_hint(const SSL *s)
3172 {
3173 if (s == NULL || s->session == NULL)
3174 return NULL;
3175 return(s->session->psk_identity_hint);
3176 }
3177
3178const char *SSL_get_psk_identity(const SSL *s)
3179 {
3180 if (s == NULL || s->session == NULL)
3181 return NULL;
3182 return(s->session->psk_identity);
3183 }
3184
3185void SSL_set_psk_client_callback(SSL *s,
3186 unsigned int (*cb)(SSL *ssl, const char *hint,
3187 char *identity, unsigned int max_identity_len, unsigned char *psk,
3188 unsigned int max_psk_len))
3189 {
3190 s->psk_client_callback = cb;
3191 }
3192
3193void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3194 unsigned int (*cb)(SSL *ssl, const char *hint,
3195 char *identity, unsigned int max_identity_len, unsigned char *psk,
3196 unsigned int max_psk_len))
3197 {
3198 ctx->psk_client_callback = cb;
3199 }
3200
3201void SSL_set_psk_server_callback(SSL *s,
3202 unsigned int (*cb)(SSL *ssl, const char *identity,
3203 unsigned char *psk, unsigned int max_psk_len))
3204 {
3205 s->psk_server_callback = cb;
3206 }
3207
3208void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3209 unsigned int (*cb)(SSL *ssl, const char *identity,
3210 unsigned char *psk, unsigned int max_psk_len))
3211 {
3212 ctx->psk_server_callback = cb;
3213 }
3214#endif
3215
3216void 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))
3217 {
3218 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3219 }
3220void 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))
3221 {
3222 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3223 }
3224
3225/* Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3226 * vairable, freeing EVP_MD_CTX previously stored in that variable, if
3227 * any. If EVP_MD pointer is passed, initializes ctx with this md
3228 * Returns newly allocated ctx;
3229 */
3230
3231EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md)
3232{
3233 ssl_clear_hash_ctx(hash);
3234 *hash = EVP_MD_CTX_create();
3235 if (md) EVP_DigestInit_ex(*hash,md,NULL);
3236 return *hash;
3237}
3238void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3239{
3240
3241 if (*hash) EVP_MD_CTX_destroy(*hash);
3242 *hash=NULL;
3243}
3244
3245void SSL_set_debug(SSL *s, int debug)
3246 {
3247 s->debug = debug;
3248 }
3249
3250int SSL_cache_hit(SSL *s)
3251 {
3252 return s->hit;
3253 }
3254
3255#if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
3256#include "../crypto/bio/bss_file.c"
3257#endif
3258
3259IMPLEMENT_STACK_OF(SSL_CIPHER)
3260IMPLEMENT_STACK_OF(SSL_COMP)
3261IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER,
3262 ssl_cipher_id);
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2026-02-09 03:44:23 +0000