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
163 const char *SSL_version_str=OPENSSL_VERSION_TEXT;
164
165 SSL3_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
185 int 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 */
258 int 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
275 SSL *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);
384 err:
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
397 int 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
411 int 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
425 int 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
433 int 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
441 int 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
475 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
476 {
477 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
478 }
479
480 int SSL_set_purpose(SSL *s, int purpose)
481 {
482 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
483 }
484
485 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
486 {
487 return X509_VERIFY_PARAM_set_trust(s->param, trust);
488 }
489
490 int SSL_set_trust(SSL *s, int trust)
491 {
492 return X509_VERIFY_PARAM_set_trust(s->param, trust);
493 }
494
495 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
496 {
497 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
498 }
499
500 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
501 {
502 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
503 }
504
505 void 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
608 void 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
628 BIO *SSL_get_rbio(const SSL *s)
629 { return(s->rbio); }
630
631 BIO *SSL_get_wbio(const SSL *s)
632 { return(s->wbio); }
633
634 int SSL_get_fd(const SSL *s)
635 {
636 return(SSL_get_rfd(s));
637 }
638
639 int 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
651 int 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
664 int 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;
679 err:
680 return(ret);
681 }
682
683 int 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;
701 err:
702 return(ret);
703 }
704
705 int 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;
726 err:
727 return(ret);
728 }
729 #endif
730
731
732 /* return length of latest Finished message we sent, copy to 'buf' */
733 size_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' */
748 size_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
763 int SSL_get_verify_mode(const SSL *s)
764 {
765 return(s->verify_mode);
766 }
767
768 int SSL_get_verify_depth(const SSL *s)
769 {
770 return X509_VERIFY_PARAM_get_depth(s->param);
771 }
772
773 int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *)
774 {
775 return(s->verify_callback);
776 }
777
778 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
779 {
780 return(ctx->verify_mode);
781 }
782
783 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
784 {
785 return X509_VERIFY_PARAM_get_depth(ctx->param);
786 }
787
788 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *)
789 {
790 return(ctx->default_verify_callback);
791 }
792
793 void 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
801 void SSL_set_verify_depth(SSL *s,int depth)
802 {
803 X509_VERIFY_PARAM_set_depth(s->param, depth);
804 }
805
806 void SSL_set_read_ahead(SSL *s,int yes)
807 {
808 s->read_ahead=yes;
809 }
810
811 int SSL_get_read_ahead(const SSL *s)
812 {
813 return(s->read_ahead);
814 }
815
816 int 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
828 X509 *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
844 STACK_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 */
861 void 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 */
890 int 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 */
908 int 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
934 int 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
943 int 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
952 long SSL_get_default_timeout(const SSL *s)
953 {
954 return(s->method->get_timeout());
955 }
956
957 int 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
973 int 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
988 int 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
1005 int 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
1025 int 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
1035 int 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
1045 int 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
1052 long 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
1110 long 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
1123 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1124 {
1125 return ctx->sessions;
1126 }
1127
1128 long 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
1207 long 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
1220 int 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
1231 int 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 */
1245 STACK_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 */
1264 STACK_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() */
1282 const 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 */
1297 int 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 */
1321 int 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 */
1339 char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len)
1340 {
1341 char *p;
1342 STACK_OF(SSL_CIPHER) *sk;
1343 SSL_CIPHER *c;
1344 int i;
1345
1346 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1347 (len < 2))
1348 return(NULL);
1349
1350 p=buf;
1351 sk=s->session->ciphers;
1352
1353 if (sk_SSL_CIPHER_num(sk) == 0)
1354 return NULL;
1355
1356 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1357 {
1358 int n;
1359
1360 c=sk_SSL_CIPHER_value(sk,i);
1361 n=strlen(c->name);
1362 if (n+1 > len)
1363 {
1364 if (p != buf)
1365 --p;
1366 *p='\0';
1367 return buf;
1368 }
1369 strcpy(p,c->name);
1370 p+=n;
1371 *(p++)=':';
1372 len-=n+1;
1373 }
1374 p[-1]='\0';
1375 return(buf);
1376 }
1377
1378 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
1379 int (*put_cb)(const SSL_CIPHER *, unsigned char *))
1380 {
1381 int i,j=0;
1382 SSL_CIPHER *c;
1383 unsigned char *q;
1384 #ifndef OPENSSL_NO_KRB5
1385 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1386 #endif /* OPENSSL_NO_KRB5 */
1387
1388 if (sk == NULL) return(0);
1389 q=p;
1390
1391 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1392 {
1393 c=sk_SSL_CIPHER_value(sk,i);
1394 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */
1395 if ((c->algorithm_ssl & SSL_TLSV1_2) &&
1396 (TLS1_get_client_version(s) < TLS1_2_VERSION))
1397 continue;
1398 #ifndef OPENSSL_NO_KRB5
1399 if (((c->algorithm_mkey & SSL_kKRB5) || (c->algorithm_auth & SSL_aKRB5)) &&
1400 nokrb5)
1401 continue;
1402 #endif /* OPENSSL_NO_KRB5 */
1403 #ifndef OPENSSL_NO_PSK
1404 /* with PSK there must be client callback set */
1405 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK)) &&
1406 s->psk_client_callback == NULL)
1407 continue;
1408 #endif /* OPENSSL_NO_PSK */
1409 #ifndef OPENSSL_NO_SRP
1410 if (((c->algorithm_mkey & SSL_kSRP) || (c->algorithm_auth & SSL_aSRP)) &&
1411 !(s->srp_ctx.srp_Mask & SSL_kSRP))
1412 continue;
1413 #endif /* OPENSSL_NO_SRP */
1414 j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p);
1415 p+=j;
1416 }
1417 /* If p == q, no ciphers and caller indicates an error. Otherwise
1418 * add SCSV if not renegotiating.
1419 */
1420 if (p != q && !s->renegotiate)
1421 {
1422 static SSL_CIPHER scsv =
1423 {
1424 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1425 };
1426 j = put_cb ? put_cb(&scsv,p) : ssl_put_cipher_by_char(s,&scsv,p);
1427 p+=j;
1428 #ifdef OPENSSL_RI_DEBUG
1429 fprintf(stderr, "SCSV sent by client\n");
1430 #endif
1431 }
1432
1433 return(p-q);
1434 }
1435
1436 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1437 STACK_OF(SSL_CIPHER) **skp)
1438 {
1439 const SSL_CIPHER *c;
1440 STACK_OF(SSL_CIPHER) *sk;
1441 int i,n;
1442 if (s->s3)
1443 s->s3->send_connection_binding = 0;
1444
1445 n=ssl_put_cipher_by_char(s,NULL,NULL);
1446 if ((num%n) != 0)
1447 {
1448 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1449 return(NULL);
1450 }
1451 if ((skp == NULL) || (*skp == NULL))
1452 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1453 else
1454 {
1455 sk= *skp;
1456 sk_SSL_CIPHER_zero(sk);
1457 }
1458
1459 for (i=0; i<num; i+=n)
1460 {
1461 /* Check for SCSV */
1462 if (s->s3 && (n != 3 || !p[0]) &&
1463 (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1464 (p[n-1] == (SSL3_CK_SCSV & 0xff)))
1465 {
1466 /* SCSV fatal if renegotiating */
1467 if (s->renegotiate)
1468 {
1469 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1470 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1471 goto err;
1472 }
1473 s->s3->send_connection_binding = 1;
1474 p += n;
1475 #ifdef OPENSSL_RI_DEBUG
1476 fprintf(stderr, "SCSV received by server\n");
1477 #endif
1478 continue;
1479 }
1480
1481 c=ssl_get_cipher_by_char(s,p);
1482 p+=n;
1483 if (c != NULL)
1484 {
1485 if (!sk_SSL_CIPHER_push(sk,c))
1486 {
1487 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1488 goto err;
1489 }
1490 }
1491 }
1492
1493 if (skp != NULL)
1494 *skp=sk;
1495 return(sk);
1496 err:
1497 if ((skp == NULL) || (*skp == NULL))
1498 sk_SSL_CIPHER_free(sk);
1499 return(NULL);
1500 }
1501
1502
1503 #ifndef OPENSSL_NO_TLSEXT
1504 /** return a servername extension value if provided in Client Hello, or NULL.
1505 * So far, only host_name types are defined (RFC 3546).
1506 */
1507
1508 const char *SSL_get_servername(const SSL *s, const int type)
1509 {
1510 if (type != TLSEXT_NAMETYPE_host_name)
1511 return NULL;
1512
1513 return s->session && !s->tlsext_hostname ?
1514 s->session->tlsext_hostname :
1515 s->tlsext_hostname;
1516 }
1517
1518 int SSL_get_servername_type(const SSL *s)
1519 {
1520 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname))
1521 return TLSEXT_NAMETYPE_host_name;
1522 return -1;
1523 }
1524
1525 # ifndef OPENSSL_NO_NEXTPROTONEG
1526 /* SSL_select_next_proto implements the standard protocol selection. It is
1527 * expected that this function is called from the callback set by
1528 * SSL_CTX_set_next_proto_select_cb.
1529 *
1530 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte
1531 * strings. The length byte itself is not included in the length. A byte
1532 * string of length 0 is invalid. No byte string may be truncated.
1533 *
1534 * The current, but experimental algorithm for selecting the protocol is:
1535 *
1536 * 1) If the server doesn't support NPN then this is indicated to the
1537 * callback. In this case, the client application has to abort the connection
1538 * or have a default application level protocol.
1539 *
1540 * 2) If the server supports NPN, but advertises an empty list then the
1541 * client selects the first protcol in its list, but indicates via the
1542 * API that this fallback case was enacted.
1543 *
1544 * 3) Otherwise, the client finds the first protocol in the server's list
1545 * that it supports and selects this protocol. This is because it's
1546 * assumed that the server has better information about which protocol
1547 * a client should use.
1548 *
1549 * 4) If the client doesn't support any of the server's advertised
1550 * protocols, then this is treated the same as case 2.
1551 *
1552 * It returns either
1553 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or
1554 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1555 */
1556 int 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)
1557 {
1558 unsigned int i, j;
1559 const unsigned char *result;
1560 int status = OPENSSL_NPN_UNSUPPORTED;
1561
1562 /* For each protocol in server preference order, see if we support it. */
1563 for (i = 0; i < server_len; )
1564 {
1565 for (j = 0; j < client_len; )
1566 {
1567 if (server[i] == client[j] &&
1568 memcmp(&server[i+1], &client[j+1], server[i]) == 0)
1569 {
1570 /* We found a match */
1571 result = &server[i];
1572 status = OPENSSL_NPN_NEGOTIATED;
1573 goto found;
1574 }
1575 j += client[j];
1576 j++;
1577 }
1578 i += server[i];
1579 i++;
1580 }
1581
1582 /* There's no overlap between our protocols and the server's list. */
1583 result = client;
1584 status = OPENSSL_NPN_NO_OVERLAP;
1585
1586 found:
1587 *out = (unsigned char *) result + 1;
1588 *outlen = result[0];
1589 return status;
1590 }
1591
1592 /* SSL_get0_next_proto_negotiated sets *data and *len to point to the client's
1593 * requested protocol for this connection and returns 0. If the client didn't
1594 * request any protocol, then *data is set to NULL.
1595 *
1596 * Note that the client can request any protocol it chooses. The value returned
1597 * from this function need not be a member of the list of supported protocols
1598 * provided by the callback.
1599 */
1600 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, unsigned *len)
1601 {
1602 *data = s->next_proto_negotiated;
1603 if (!*data) {
1604 *len = 0;
1605 } else {
1606 *len = s->next_proto_negotiated_len;
1607 }
1608 }
1609
1610 /* SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a
1611 * TLS server needs a list of supported protocols for Next Protocol
1612 * Negotiation. The returned list must be in wire format. The list is returned
1613 * by setting |out| to point to it and |outlen| to its length. This memory will
1614 * not be modified, but one should assume that the SSL* keeps a reference to
1615 * it.
1616 *
1617 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. Otherwise, no
1618 * such extension will be included in the ServerHello. */
1619 void 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)
1620 {
1621 ctx->next_protos_advertised_cb = cb;
1622 ctx->next_protos_advertised_cb_arg = arg;
1623 }
1624
1625 /* SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1626 * client needs to select a protocol from the server's provided list. |out|
1627 * must be set to point to the selected protocol (which may be within |in|).
1628 * The length of the protocol name must be written into |outlen|. The server's
1629 * advertised protocols are provided in |in| and |inlen|. The callback can
1630 * assume that |in| is syntactically valid.
1631 *
1632 * The client must select a protocol. It is fatal to the connection if this
1633 * callback returns a value other than SSL_TLSEXT_ERR_OK.
1634 */
1635 void 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)
1636 {
1637 ctx->next_proto_select_cb = cb;
1638 ctx->next_proto_select_cb_arg = arg;
1639 }
1640 # endif
1641 #endif
1642
1643 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1644 const char *label, size_t llen, const unsigned char *p, size_t plen,
1645 int use_context)
1646 {
1647 if (s->version < TLS1_VERSION)
1648 return -1;
1649
1650 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1651 llen, p, plen,
1652 use_context);
1653 }
1654
1655 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1656 {
1657 unsigned long l;
1658
1659 l=(unsigned long)
1660 ((unsigned int) a->session_id[0] )|
1661 ((unsigned int) a->session_id[1]<< 8L)|
1662 ((unsigned long)a->session_id[2]<<16L)|
1663 ((unsigned long)a->session_id[3]<<24L);
1664 return(l);
1665 }
1666
1667 /* NB: If this function (or indeed the hash function which uses a sort of
1668 * coarser function than this one) is changed, ensure
1669 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1670 * able to construct an SSL_SESSION that will collide with any existing session
1671 * with a matching session ID. */
1672 static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
1673 {
1674 if (a->ssl_version != b->ssl_version)
1675 return(1);
1676 if (a->session_id_length != b->session_id_length)
1677 return(1);
1678 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1679 }
1680
1681 /* These wrapper functions should remain rather than redeclaring
1682 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1683 * variable. The reason is that the functions aren't static, they're exposed via
1684 * ssl.h. */
1685 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1686 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1687
1688 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1689 {
1690 SSL_CTX *ret=NULL;
1691
1692 if (meth == NULL)
1693 {
1694 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1695 return(NULL);
1696 }
1697
1698 #ifdef OPENSSL_FIPS
1699 if (FIPS_mode() && (meth->version < TLS1_VERSION))
1700 {
1701 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1702 return NULL;
1703 }
1704 #endif
1705
1706 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1707 {
1708 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1709 goto err;
1710 }
1711 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1712 if (ret == NULL)
1713 goto err;
1714
1715 memset(ret,0,sizeof(SSL_CTX));
1716
1717 ret->method=meth;
1718
1719 ret->cert_store=NULL;
1720 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1721 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1722 ret->session_cache_head=NULL;
1723 ret->session_cache_tail=NULL;
1724
1725 /* We take the system default */
1726 ret->session_timeout=meth->get_timeout();
1727
1728 ret->new_session_cb=0;
1729 ret->remove_session_cb=0;
1730 ret->get_session_cb=0;
1731 ret->generate_session_id=0;
1732
1733 memset((char *)&ret->stats,0,sizeof(ret->stats));
1734
1735 ret->references=1;
1736 ret->quiet_shutdown=0;
1737
1738 /* ret->cipher=NULL;*/
1739 /* ret->s2->challenge=NULL;
1740 ret->master_key=NULL;
1741 ret->key_arg=NULL;
1742 ret->s2->conn_id=NULL; */
1743
1744 ret->info_callback=NULL;
1745
1746 ret->app_verify_callback=0;
1747 ret->app_verify_arg=NULL;
1748
1749 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1750 ret->read_ahead=0;
1751 ret->msg_callback=0;
1752 ret->msg_callback_arg=NULL;
1753 ret->verify_mode=SSL_VERIFY_NONE;
1754 #if 0
1755 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1756 #endif
1757 ret->sid_ctx_length=0;
1758 ret->default_verify_callback=NULL;
1759 if ((ret->cert=ssl_cert_new()) == NULL)
1760 goto err;
1761
1762 ret->default_passwd_callback=0;
1763 ret->default_passwd_callback_userdata=NULL;
1764 ret->client_cert_cb=0;
1765 ret->app_gen_cookie_cb=0;
1766 ret->app_verify_cookie_cb=0;
1767
1768 ret->sessions=lh_SSL_SESSION_new();
1769 if (ret->sessions == NULL) goto err;
1770 ret->cert_store=X509_STORE_new();
1771 if (ret->cert_store == NULL) goto err;
1772
1773 ssl_create_cipher_list(ret->method,
1774 &ret->cipher_list,&ret->cipher_list_by_id,
1775 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
1776 if (ret->cipher_list == NULL
1777 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1778 {
1779 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1780 goto err2;
1781 }
1782
1783 ret->param = X509_VERIFY_PARAM_new();
1784 if (!ret->param)
1785 goto err;
1786
1787 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1788 {
1789 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1790 goto err2;
1791 }
1792 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1793 {
1794 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1795 goto err2;
1796 }
1797 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1798 {
1799 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1800 goto err2;
1801 }
1802
1803 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1804 goto err;
1805
1806 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1807
1808 ret->extra_certs=NULL;
1809 /* No compression for DTLS */
1810 if (meth->version != DTLS1_VERSION)
1811 ret->comp_methods=SSL_COMP_get_compression_methods();
1812
1813 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1814
1815 #ifndef OPENSSL_NO_TLSEXT
1816 ret->tlsext_servername_callback = 0;
1817 ret->tlsext_servername_arg = NULL;
1818 /* Setup RFC4507 ticket keys */
1819 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1820 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1821 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1822 ret->options |= SSL_OP_NO_TICKET;
1823
1824 ret->tlsext_status_cb = 0;
1825 ret->tlsext_status_arg = NULL;
1826
1827 # ifndef OPENSSL_NO_NEXTPROTONEG
1828 ret->next_protos_advertised_cb = 0;
1829 ret->next_proto_select_cb = 0;
1830 # endif
1831 #endif
1832 #ifndef OPENSSL_NO_PSK
1833 ret->psk_identity_hint=NULL;
1834 ret->psk_client_callback=NULL;
1835 ret->psk_server_callback=NULL;
1836 #endif
1837 #ifndef OPENSSL_NO_SRP
1838 SSL_CTX_SRP_CTX_init(ret);
1839 #endif
1840 #ifndef OPENSSL_NO_BUF_FREELISTS
1841 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT;
1842 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1843 if (!ret->rbuf_freelist)
1844 goto err;
1845 ret->rbuf_freelist->chunklen = 0;
1846 ret->rbuf_freelist->len = 0;
1847 ret->rbuf_freelist->head = NULL;
1848 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1849 if (!ret->wbuf_freelist)
1850 {
1851 OPENSSL_free(ret->rbuf_freelist);
1852 goto err;
1853 }
1854 ret->wbuf_freelist->chunklen = 0;
1855 ret->wbuf_freelist->len = 0;
1856 ret->wbuf_freelist->head = NULL;
1857 #endif
1858 #ifndef OPENSSL_NO_ENGINE
1859 ret->client_cert_engine = NULL;
1860 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
1861 #define eng_strx(x) #x
1862 #define eng_str(x) eng_strx(x)
1863 /* Use specific client engine automatically... ignore errors */
1864 {
1865 ENGINE *eng;
1866 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1867 if (!eng)
1868 {
1869 ERR_clear_error();
1870 ENGINE_load_builtin_engines();
1871 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1872 }
1873 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
1874 ERR_clear_error();
1875 }
1876 #endif
1877 #endif
1878 /* Default is to connect to non-RI servers. When RI is more widely
1879 * deployed might change this.
1880 */
1881 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
1882
1883 return(ret);
1884 err:
1885 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1886 err2:
1887 if (ret != NULL) SSL_CTX_free(ret);
1888 return(NULL);
1889 }
1890
1891 #if 0
1892 static void SSL_COMP_free(SSL_COMP *comp)
1893 { OPENSSL_free(comp); }
1894 #endif
1895
1896 #ifndef OPENSSL_NO_BUF_FREELISTS
1897 static void
1898 ssl_buf_freelist_free(SSL3_BUF_FREELIST *list)
1899 {
1900 SSL3_BUF_FREELIST_ENTRY *ent, *next;
1901 for (ent = list->head; ent; ent = next)
1902 {
1903 next = ent->next;
1904 OPENSSL_free(ent);
1905 }
1906 OPENSSL_free(list);
1907 }
1908 #endif
1909
1910 void SSL_CTX_free(SSL_CTX *a)
1911 {
1912 int i;
1913
1914 if (a == NULL) return;
1915
1916 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1917 #ifdef REF_PRINT
1918 REF_PRINT("SSL_CTX",a);
1919 #endif
1920 if (i > 0) return;
1921 #ifdef REF_CHECK
1922 if (i < 0)
1923 {
1924 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1925 abort(); /* ok */
1926 }
1927 #endif
1928
1929 if (a->param)
1930 X509_VERIFY_PARAM_free(a->param);
1931
1932 /*
1933 * Free internal session cache. However: the remove_cb() may reference
1934 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1935 * after the sessions were flushed.
1936 * As the ex_data handling routines might also touch the session cache,
1937 * the most secure solution seems to be: empty (flush) the cache, then
1938 * free ex_data, then finally free the cache.
1939 * (See ticket [openssl.org #212].)
1940 */
1941 if (a->sessions != NULL)
1942 SSL_CTX_flush_sessions(a,0);
1943
1944 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1945
1946 if (a->sessions != NULL)
1947 lh_SSL_SESSION_free(a->sessions);
1948
1949 if (a->cert_store != NULL)
1950 X509_STORE_free(a->cert_store);
1951 if (a->cipher_list != NULL)
1952 sk_SSL_CIPHER_free(a->cipher_list);
1953 if (a->cipher_list_by_id != NULL)
1954 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1955 if (a->cert != NULL)
1956 ssl_cert_free(a->cert);
1957 if (a->client_CA != NULL)
1958 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1959 if (a->extra_certs != NULL)
1960 sk_X509_pop_free(a->extra_certs,X509_free);
1961 #if 0 /* This should never be done, since it removes a global database */
1962 if (a->comp_methods != NULL)
1963 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1964 #else
1965 a->comp_methods = NULL;
1966 #endif
1967
1968 #ifndef OPENSSL_NO_SRTP
1969 if (a->srtp_profiles)
1970 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
1971 #endif
1972
1973 #ifndef OPENSSL_NO_PSK
1974 if (a->psk_identity_hint)
1975 OPENSSL_free(a->psk_identity_hint);
1976 #endif
1977 #ifndef OPENSSL_NO_SRP
1978 SSL_CTX_SRP_CTX_free(a);
1979 #endif
1980 #ifndef OPENSSL_NO_ENGINE
1981 if (a->client_cert_engine)
1982 ENGINE_finish(a->client_cert_engine);
1983 #endif
1984
1985 #ifndef OPENSSL_NO_BUF_FREELISTS
1986 if (a->wbuf_freelist)
1987 ssl_buf_freelist_free(a->wbuf_freelist);
1988 if (a->rbuf_freelist)
1989 ssl_buf_freelist_free(a->rbuf_freelist);
1990 #endif
1991
1992 OPENSSL_free(a);
1993 }
1994
1995 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1996 {
1997 ctx->default_passwd_callback=cb;
1998 }
1999
2000 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
2001 {
2002 ctx->default_passwd_callback_userdata=u;
2003 }
2004
2005 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
2006 {
2007 ctx->app_verify_callback=cb;
2008 ctx->app_verify_arg=arg;
2009 }
2010
2011 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
2012 {
2013 ctx->verify_mode=mode;
2014 ctx->default_verify_callback=cb;
2015 }
2016
2017 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
2018 {
2019 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2020 }
2021
2022 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2023 {
2024 CERT_PKEY *cpk;
2025 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
2026 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
2027 int rsa_tmp_export,dh_tmp_export,kl;
2028 unsigned long mask_k,mask_a,emask_k,emask_a;
2029 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size;
2030 #ifndef OPENSSL_NO_ECDH
2031 int have_ecdh_tmp;
2032 #endif
2033 X509 *x = NULL;
2034 EVP_PKEY *ecc_pkey = NULL;
2035 int signature_nid = 0, pk_nid = 0, md_nid = 0;
2036
2037 if (c == NULL) return;
2038
2039 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
2040
2041 #ifndef OPENSSL_NO_RSA
2042 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
2043 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
2044 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
2045 #else
2046 rsa_tmp=rsa_tmp_export=0;
2047 #endif
2048 #ifndef OPENSSL_NO_DH
2049 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
2050 dh_tmp_export=(c->dh_tmp_cb != NULL ||
2051 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
2052 #else
2053 dh_tmp=dh_tmp_export=0;
2054 #endif
2055
2056 #ifndef OPENSSL_NO_ECDH
2057 have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL);
2058 #endif
2059 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
2060 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
2061 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2062 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2063 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
2064 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2065 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
2066 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
2067 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
2068 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2069 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
2070 /* FIX THIS EAY EAY EAY */
2071 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
2072 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2073 cpk= &(c->pkeys[SSL_PKEY_ECC]);
2074 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL);
2075 mask_k=0;
2076 mask_a=0;
2077 emask_k=0;
2078 emask_a=0;
2079
2080
2081
2082 #ifdef CIPHER_DEBUG
2083 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2084 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp,
2085 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
2086 #endif
2087
2088 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2089 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
2090 mask_k |= SSL_kGOST;
2091 mask_a |= SSL_aGOST01;
2092 }
2093 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
2094 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
2095 mask_k |= SSL_kGOST;
2096 mask_a |= SSL_aGOST94;
2097 }
2098
2099 if (rsa_enc || (rsa_tmp && rsa_sign))
2100 mask_k|=SSL_kRSA;
2101 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2102 emask_k|=SSL_kRSA;
2103
2104 #if 0
2105 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
2106 if ( (dh_tmp || dh_rsa || dh_dsa) &&
2107 (rsa_enc || rsa_sign || dsa_sign))
2108 mask_k|=SSL_kEDH;
2109 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
2110 (rsa_enc || rsa_sign || dsa_sign))
2111 emask_k|=SSL_kEDH;
2112 #endif
2113
2114 if (dh_tmp_export)
2115 emask_k|=SSL_kEDH;
2116
2117 if (dh_tmp)
2118 mask_k|=SSL_kEDH;
2119
2120 if (dh_rsa) mask_k|=SSL_kDHr;
2121 if (dh_rsa_export) emask_k|=SSL_kDHr;
2122
2123 if (dh_dsa) mask_k|=SSL_kDHd;
2124 if (dh_dsa_export) emask_k|=SSL_kDHd;
2125
2126 if (rsa_enc || rsa_sign)
2127 {
2128 mask_a|=SSL_aRSA;
2129 emask_a|=SSL_aRSA;
2130 }
2131
2132 if (dsa_sign)
2133 {
2134 mask_a|=SSL_aDSS;
2135 emask_a|=SSL_aDSS;
2136 }
2137
2138 mask_a|=SSL_aNULL;
2139 emask_a|=SSL_aNULL;
2140
2141 #ifndef OPENSSL_NO_KRB5
2142 mask_k|=SSL_kKRB5;
2143 mask_a|=SSL_aKRB5;
2144 emask_k|=SSL_kKRB5;
2145 emask_a|=SSL_aKRB5;
2146 #endif
2147
2148 /* An ECC certificate may be usable for ECDH and/or
2149 * ECDSA cipher suites depending on the key usage extension.
2150 */
2151 if (have_ecc_cert)
2152 {
2153 /* This call populates extension flags (ex_flags) */
2154 x = (c->pkeys[SSL_PKEY_ECC]).x509;
2155 X509_check_purpose(x, -1, 0);
2156 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2157 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
2158 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2159 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
2160 ecc_pkey = X509_get_pubkey(x);
2161 ecc_pkey_size = (ecc_pkey != NULL) ?
2162 EVP_PKEY_bits(ecc_pkey) : 0;
2163 EVP_PKEY_free(ecc_pkey);
2164 if ((x->sig_alg) && (x->sig_alg->algorithm))
2165 {
2166 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2167 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2168 }
2169 #ifndef OPENSSL_NO_ECDH
2170 if (ecdh_ok)
2171 {
2172
2173 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa)
2174 {
2175 mask_k|=SSL_kECDHr;
2176 mask_a|=SSL_aECDH;
2177 if (ecc_pkey_size <= 163)
2178 {
2179 emask_k|=SSL_kECDHr;
2180 emask_a|=SSL_aECDH;
2181 }
2182 }
2183
2184 if (pk_nid == NID_X9_62_id_ecPublicKey)
2185 {
2186 mask_k|=SSL_kECDHe;
2187 mask_a|=SSL_aECDH;
2188 if (ecc_pkey_size <= 163)
2189 {
2190 emask_k|=SSL_kECDHe;
2191 emask_a|=SSL_aECDH;
2192 }
2193 }
2194 }
2195 #endif
2196 #ifndef OPENSSL_NO_ECDSA
2197 if (ecdsa_ok)
2198 {
2199 mask_a|=SSL_aECDSA;
2200 emask_a|=SSL_aECDSA;
2201 }
2202 #endif
2203 }
2204
2205 #ifndef OPENSSL_NO_ECDH
2206 if (have_ecdh_tmp)
2207 {
2208 mask_k|=SSL_kEECDH;
2209 emask_k|=SSL_kEECDH;
2210 }
2211 #endif
2212
2213 #ifndef OPENSSL_NO_PSK
2214 mask_k |= SSL_kPSK;
2215 mask_a |= SSL_aPSK;
2216 emask_k |= SSL_kPSK;
2217 emask_a |= SSL_aPSK;
2218 #endif
2219
2220 c->mask_k=mask_k;
2221 c->mask_a=mask_a;
2222 c->export_mask_k=emask_k;
2223 c->export_mask_a=emask_a;
2224 c->valid=1;
2225 }
2226
2227 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2228 #define ku_reject(x, usage) \
2229 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2230
2231 #ifndef OPENSSL_NO_EC
2232
2233 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2234 {
2235 unsigned long alg_k, alg_a;
2236 EVP_PKEY *pkey = NULL;
2237 int keysize = 0;
2238 int signature_nid = 0, md_nid = 0, pk_nid = 0;
2239 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2240
2241 alg_k = cs->algorithm_mkey;
2242 alg_a = cs->algorithm_auth;
2243
2244 if (SSL_C_IS_EXPORT(cs))
2245 {
2246 /* ECDH key length in export ciphers must be <= 163 bits */
2247 pkey = X509_get_pubkey(x);
2248 if (pkey == NULL) return 0;
2249 keysize = EVP_PKEY_bits(pkey);
2250 EVP_PKEY_free(pkey);
2251 if (keysize > 163) return 0;
2252 }
2253
2254 /* This call populates the ex_flags field correctly */
2255 X509_check_purpose(x, -1, 0);
2256 if ((x->sig_alg) && (x->sig_alg->algorithm))
2257 {
2258 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2259 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2260 }
2261 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr)
2262 {
2263 /* key usage, if present, must allow key agreement */
2264 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT))
2265 {
2266 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2267 return 0;
2268 }
2269 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION)
2270 {
2271 /* signature alg must be ECDSA */
2272 if (pk_nid != NID_X9_62_id_ecPublicKey)
2273 {
2274 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2275 return 0;
2276 }
2277 }
2278 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION)
2279 {
2280 /* signature alg must be RSA */
2281
2282 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa)
2283 {
2284 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2285 return 0;
2286 }
2287 }
2288 }
2289 if (alg_a & SSL_aECDSA)
2290 {
2291 /* key usage, if present, must allow signing */
2292 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE))
2293 {
2294 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2295 return 0;
2296 }
2297 }
2298
2299 return 1; /* all checks are ok */
2300 }
2301
2302 #endif
2303
2304 /* THIS NEEDS CLEANING UP */
2305 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s)
2306 {
2307 unsigned long alg_k,alg_a;
2308 CERT *c;
2309 int i;
2310
2311 c=s->cert;
2312 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2313
2314 alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
2315 alg_a = s->s3->tmp.new_cipher->algorithm_auth;
2316
2317 if (alg_k & (SSL_kECDHr|SSL_kECDHe))
2318 {
2319 /* we don't need to look at SSL_kEECDH
2320 * since no certificate is needed for
2321 * anon ECDH and for authenticated
2322 * EECDH, the check for the auth
2323 * algorithm will set i correctly
2324 * NOTE: For ECDH-RSA, we need an ECC
2325 * not an RSA cert but for EECDH-RSA
2326 * we need an RSA cert. Placing the
2327 * checks for SSL_kECDH before RSA
2328 * checks ensures the correct cert is chosen.
2329 */
2330 i=SSL_PKEY_ECC;
2331 }
2332 else if (alg_a & SSL_aECDSA)
2333 {
2334 i=SSL_PKEY_ECC;
2335 }
2336 else if (alg_k & SSL_kDHr)
2337 i=SSL_PKEY_DH_RSA;
2338 else if (alg_k & SSL_kDHd)
2339 i=SSL_PKEY_DH_DSA;
2340 else if (alg_a & SSL_aDSS)
2341 i=SSL_PKEY_DSA_SIGN;
2342 else if (alg_a & SSL_aRSA)
2343 {
2344 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
2345 i=SSL_PKEY_RSA_SIGN;
2346 else
2347 i=SSL_PKEY_RSA_ENC;
2348 }
2349 else if (alg_a & SSL_aKRB5)
2350 {
2351 /* VRS something else here? */
2352 return(NULL);
2353 }
2354 else if (alg_a & SSL_aGOST94)
2355 i=SSL_PKEY_GOST94;
2356 else if (alg_a & SSL_aGOST01)
2357 i=SSL_PKEY_GOST01;
2358 else /* if (alg_a & SSL_aNULL) */
2359 {
2360 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY,ERR_R_INTERNAL_ERROR);
2361 return(NULL);
2362 }
2363
2364 return c->pkeys + i;
2365 }
2366
2367 X509 *ssl_get_server_send_cert(const SSL *s)
2368 {
2369 CERT_PKEY *cpk;
2370 cpk = ssl_get_server_send_pkey(s);
2371 if (!cpk)
2372 return NULL;
2373 return cpk->x509;
2374 }
2375
2376 EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher, const EVP_MD **pmd)
2377 {
2378 unsigned long alg_a;
2379 CERT *c;
2380 int idx = -1;
2381
2382 alg_a = cipher->algorithm_auth;
2383 c=s->cert;
2384
2385 if ((alg_a & SSL_aDSS) &&
2386 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2387 idx = SSL_PKEY_DSA_SIGN;
2388 else if (alg_a & SSL_aRSA)
2389 {
2390 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2391 idx = SSL_PKEY_RSA_SIGN;
2392 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2393 idx = SSL_PKEY_RSA_ENC;
2394 }
2395 else if ((alg_a & SSL_aECDSA) &&
2396 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2397 idx = SSL_PKEY_ECC;
2398 if (idx == -1)
2399 {
2400 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
2401 return(NULL);
2402 }
2403 if (pmd)
2404 *pmd = c->pkeys[idx].digest;
2405 return c->pkeys[idx].privatekey;
2406 }
2407
2408 void ssl_update_cache(SSL *s,int mode)
2409 {
2410 int i;
2411
2412 /* If the session_id_length is 0, we are not supposed to cache it,
2413 * and it would be rather hard to do anyway :-) */
2414 if (s->session->session_id_length == 0) return;
2415
2416 i=s->session_ctx->session_cache_mode;
2417 if ((i & mode) && (!s->hit)
2418 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2419 || SSL_CTX_add_session(s->session_ctx,s->session))
2420 && (s->session_ctx->new_session_cb != NULL))
2421 {
2422 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
2423 if (!s->session_ctx->new_session_cb(s,s->session))
2424 SSL_SESSION_free(s->session);
2425 }
2426
2427 /* auto flush every 255 connections */
2428 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
2429 ((i & mode) == mode))
2430 {
2431 if ( (((mode & SSL_SESS_CACHE_CLIENT)
2432 ?s->session_ctx->stats.sess_connect_good
2433 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff)
2434 {
2435 SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL));
2436 }
2437 }
2438 }
2439
2440 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2441 {
2442 return(s->method);
2443 }
2444
2445 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2446 {
2447 int conn= -1;
2448 int ret=1;
2449
2450 if (s->method != meth)
2451 {
2452 if (s->handshake_func != NULL)
2453 conn=(s->handshake_func == s->method->ssl_connect);
2454
2455 if (s->method->version == meth->version)
2456 s->method=meth;
2457 else
2458 {
2459 s->method->ssl_free(s);
2460 s->method=meth;
2461 ret=s->method->ssl_new(s);
2462 }
2463
2464 if (conn == 1)
2465 s->handshake_func=meth->ssl_connect;
2466 else if (conn == 0)
2467 s->handshake_func=meth->ssl_accept;
2468 }
2469 return(ret);
2470 }
2471
2472 int SSL_get_error(const SSL *s,int i)
2473 {
2474 int reason;
2475 unsigned long l;
2476 BIO *bio;
2477
2478 if (i > 0) return(SSL_ERROR_NONE);
2479
2480 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
2481 * etc, where we do encode the error */
2482 if ((l=ERR_peek_error()) != 0)
2483 {
2484 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2485 return(SSL_ERROR_SYSCALL);
2486 else
2487 return(SSL_ERROR_SSL);
2488 }
2489
2490 if ((i < 0) && SSL_want_read(s))
2491 {
2492 bio=SSL_get_rbio(s);
2493 if (BIO_should_read(bio))
2494 return(SSL_ERROR_WANT_READ);
2495 else if (BIO_should_write(bio))
2496 /* This one doesn't make too much sense ... We never try
2497 * to write to the rbio, and an application program where
2498 * rbio and wbio are separate couldn't even know what it
2499 * should wait for.
2500 * However if we ever set s->rwstate incorrectly
2501 * (so that we have SSL_want_read(s) instead of
2502 * SSL_want_write(s)) and rbio and wbio *are* the same,
2503 * this test works around that bug; so it might be safer
2504 * to keep it. */
2505 return(SSL_ERROR_WANT_WRITE);
2506 else if (BIO_should_io_special(bio))
2507 {
2508 reason=BIO_get_retry_reason(bio);
2509 if (reason == BIO_RR_CONNECT)
2510 return(SSL_ERROR_WANT_CONNECT);
2511 else if (reason == BIO_RR_ACCEPT)
2512 return(SSL_ERROR_WANT_ACCEPT);
2513 else
2514 return(SSL_ERROR_SYSCALL); /* unknown */
2515 }
2516 }
2517
2518 if ((i < 0) && SSL_want_write(s))
2519 {
2520 bio=SSL_get_wbio(s);
2521 if (BIO_should_write(bio))
2522 return(SSL_ERROR_WANT_WRITE);
2523 else if (BIO_should_read(bio))
2524 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
2525 return(SSL_ERROR_WANT_READ);
2526 else if (BIO_should_io_special(bio))
2527 {
2528 reason=BIO_get_retry_reason(bio);
2529 if (reason == BIO_RR_CONNECT)
2530 return(SSL_ERROR_WANT_CONNECT);
2531 else if (reason == BIO_RR_ACCEPT)
2532 return(SSL_ERROR_WANT_ACCEPT);
2533 else
2534 return(SSL_ERROR_SYSCALL);
2535 }
2536 }
2537 if ((i < 0) && SSL_want_x509_lookup(s))
2538 {
2539 return(SSL_ERROR_WANT_X509_LOOKUP);
2540 }
2541
2542 if (i == 0)
2543 {
2544 if (s->version == SSL2_VERSION)
2545 {
2546 /* assume it is the socket being closed */
2547 return(SSL_ERROR_ZERO_RETURN);
2548 }
2549 else
2550 {
2551 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2552 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2553 return(SSL_ERROR_ZERO_RETURN);
2554 }
2555 }
2556 return(SSL_ERROR_SYSCALL);
2557 }
2558
2559 int SSL_do_handshake(SSL *s)
2560 {
2561 int ret=1;
2562
2563 if (s->handshake_func == NULL)
2564 {
2565 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
2566 return(-1);
2567 }
2568
2569 s->method->ssl_renegotiate_check(s);
2570
2571 if (SSL_in_init(s) || SSL_in_before(s))
2572 {
2573 ret=s->handshake_func(s);
2574 }
2575 return(ret);
2576 }
2577
2578 /* For the next 2 functions, SSL_clear() sets shutdown and so
2579 * one of these calls will reset it */
2580 void SSL_set_accept_state(SSL *s)
2581 {
2582 s->server=1;
2583 s->shutdown=0;
2584 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
2585 s->handshake_func=s->method->ssl_accept;
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
2592 void SSL_set_connect_state(SSL *s)
2593 {
2594 s->server=0;
2595 s->shutdown=0;
2596 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
2597 s->handshake_func=s->method->ssl_connect;
2598 /* clear the current cipher */
2599 ssl_clear_cipher_ctx(s);
2600 ssl_clear_hash_ctx(&s->read_hash);
2601 ssl_clear_hash_ctx(&s->write_hash);
2602 }
2603
2604 int ssl_undefined_function(SSL *s)
2605 {
2606 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2607 return(0);
2608 }
2609
2610 int ssl_undefined_void_function(void)
2611 {
2612 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2613 return(0);
2614 }
2615
2616 int ssl_undefined_const_function(const SSL *s)
2617 {
2618 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2619 return(0);
2620 }
2621
2622 SSL_METHOD *ssl_bad_method(int ver)
2623 {
2624 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2625 return(NULL);
2626 }
2627
2628 const char *SSL_get_version(const SSL *s)
2629 {
2630 if (s->version == TLS1_2_VERSION)
2631 return("TLSv1.2");
2632 else if (s->version == TLS1_1_VERSION)
2633 return("TLSv1.1");
2634 else if (s->version == TLS1_VERSION)
2635 return("TLSv1");
2636 else if (s->version == SSL3_VERSION)
2637 return("SSLv3");
2638 else if (s->version == SSL2_VERSION)
2639 return("SSLv2");
2640 else
2641 return("unknown");
2642 }
2643
2644 SSL *SSL_dup(SSL *s)
2645 {
2646 STACK_OF(X509_NAME) *sk;
2647 X509_NAME *xn;
2648 SSL *ret;
2649 int i;
2650
2651 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2652 return(NULL);
2653
2654 ret->version = s->version;
2655 ret->type = s->type;
2656 ret->method = s->method;
2657
2658 if (s->session != NULL)
2659 {
2660 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2661 SSL_copy_session_id(ret,s);
2662 }
2663 else
2664 {
2665 /* No session has been established yet, so we have to expect
2666 * that s->cert or ret->cert will be changed later --
2667 * they should not both point to the same object,
2668 * and thus we can't use SSL_copy_session_id. */
2669
2670 ret->method->ssl_free(ret);
2671 ret->method = s->method;
2672 ret->method->ssl_new(ret);
2673
2674 if (s->cert != NULL)
2675 {
2676 if (ret->cert != NULL)
2677 {
2678 ssl_cert_free(ret->cert);
2679 }
2680 ret->cert = ssl_cert_dup(s->cert);
2681 if (ret->cert == NULL)
2682 goto err;
2683 }
2684
2685 SSL_set_session_id_context(ret,
2686 s->sid_ctx, s->sid_ctx_length);
2687 }
2688
2689 ret->options=s->options;
2690 ret->mode=s->mode;
2691 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
2692 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
2693 ret->msg_callback = s->msg_callback;
2694 ret->msg_callback_arg = s->msg_callback_arg;
2695 SSL_set_verify(ret,SSL_get_verify_mode(s),
2696 SSL_get_verify_callback(s));
2697 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
2698 ret->generate_session_id = s->generate_session_id;
2699
2700 SSL_set_info_callback(ret,SSL_get_info_callback(s));
2701
2702 ret->debug=s->debug;
2703
2704 /* copy app data, a little dangerous perhaps */
2705 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2706 goto err;
2707
2708 /* setup rbio, and wbio */
2709 if (s->rbio != NULL)
2710 {
2711 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
2712 goto err;
2713 }
2714 if (s->wbio != NULL)
2715 {
2716 if (s->wbio != s->rbio)
2717 {
2718 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
2719 goto err;
2720 }
2721 else
2722 ret->wbio=ret->rbio;
2723 }
2724 ret->rwstate = s->rwstate;
2725 ret->in_handshake = s->in_handshake;
2726 ret->handshake_func = s->handshake_func;
2727 ret->server = s->server;
2728 ret->renegotiate = s->renegotiate;
2729 ret->new_session = s->new_session;
2730 ret->quiet_shutdown = s->quiet_shutdown;
2731 ret->shutdown=s->shutdown;
2732 ret->state=s->state; /* SSL_dup does not really work at any state, though */
2733 ret->rstate=s->rstate;
2734 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
2735 ret->hit=s->hit;
2736
2737 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2738
2739 /* dup the cipher_list and cipher_list_by_id stacks */
2740 if (s->cipher_list != NULL)
2741 {
2742 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2743 goto err;
2744 }
2745 if (s->cipher_list_by_id != NULL)
2746 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2747 == NULL)
2748 goto err;
2749
2750 /* Dup the client_CA list */
2751 if (s->client_CA != NULL)
2752 {
2753 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
2754 ret->client_CA=sk;
2755 for (i=0; i<sk_X509_NAME_num(sk); i++)
2756 {
2757 xn=sk_X509_NAME_value(sk,i);
2758 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
2759 {
2760 X509_NAME_free(xn);
2761 goto err;
2762 }
2763 }
2764 }
2765
2766 if (0)
2767 {
2768 err:
2769 if (ret != NULL) SSL_free(ret);
2770 ret=NULL;
2771 }
2772 return(ret);
2773 }
2774
2775 void ssl_clear_cipher_ctx(SSL *s)
2776 {
2777 if (s->enc_read_ctx != NULL)
2778 {
2779 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2780 OPENSSL_free(s->enc_read_ctx);
2781 s->enc_read_ctx=NULL;
2782 }
2783 if (s->enc_write_ctx != NULL)
2784 {
2785 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2786 OPENSSL_free(s->enc_write_ctx);
2787 s->enc_write_ctx=NULL;
2788 }
2789 #ifndef OPENSSL_NO_COMP
2790 if (s->expand != NULL)
2791 {
2792 COMP_CTX_free(s->expand);
2793 s->expand=NULL;
2794 }
2795 if (s->compress != NULL)
2796 {
2797 COMP_CTX_free(s->compress);
2798 s->compress=NULL;
2799 }
2800 #endif
2801 }
2802
2803 /* Fix this function so that it takes an optional type parameter */
2804 X509 *SSL_get_certificate(const SSL *s)
2805 {
2806 if (s->cert != NULL)
2807 return(s->cert->key->x509);
2808 else
2809 return(NULL);
2810 }
2811
2812 /* Fix this function so that it takes an optional type parameter */
2813 EVP_PKEY *SSL_get_privatekey(SSL *s)
2814 {
2815 if (s->cert != NULL)
2816 return(s->cert->key->privatekey);
2817 else
2818 return(NULL);
2819 }
2820
2821 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2822 {
2823 if ((s->session != NULL) && (s->session->cipher != NULL))
2824 return(s->session->cipher);
2825 return(NULL);
2826 }
2827 #ifdef OPENSSL_NO_COMP
2828 const void *SSL_get_current_compression(SSL *s)
2829 {
2830 return NULL;
2831 }
2832 const void *SSL_get_current_expansion(SSL *s)
2833 {
2834 return NULL;
2835 }
2836 #else
2837
2838 const COMP_METHOD *SSL_get_current_compression(SSL *s)
2839 {
2840 if (s->compress != NULL)
2841 return(s->compress->meth);
2842 return(NULL);
2843 }
2844
2845 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2846 {
2847 if (s->expand != NULL)
2848 return(s->expand->meth);
2849 return(NULL);
2850 }
2851 #endif
2852
2853 int ssl_init_wbio_buffer(SSL *s,int push)
2854 {
2855 BIO *bbio;
2856
2857 if (s->bbio == NULL)
2858 {
2859 bbio=BIO_new(BIO_f_buffer());
2860 if (bbio == NULL) return(0);
2861 s->bbio=bbio;
2862 }
2863 else
2864 {
2865 bbio=s->bbio;
2866 if (s->bbio == s->wbio)
2867 s->wbio=BIO_pop(s->wbio);
2868 }
2869 (void)BIO_reset(bbio);
2870 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2871 if (!BIO_set_read_buffer_size(bbio,1))
2872 {
2873 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
2874 return(0);
2875 }
2876 if (push)
2877 {
2878 if (s->wbio != bbio)
2879 s->wbio=BIO_push(bbio,s->wbio);
2880 }
2881 else
2882 {
2883 if (s->wbio == bbio)
2884 s->wbio=BIO_pop(bbio);
2885 }
2886 return(1);
2887 }
2888
2889 void ssl_free_wbio_buffer(SSL *s)
2890 {
2891 if (s->bbio == NULL) return;
2892
2893 if (s->bbio == s->wbio)
2894 {
2895 /* remove buffering */
2896 s->wbio=BIO_pop(s->wbio);
2897 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
2898 assert(s->wbio != NULL);
2899 #endif
2900 }
2901 BIO_free(s->bbio);
2902 s->bbio=NULL;
2903 }
2904
2905 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
2906 {
2907 ctx->quiet_shutdown=mode;
2908 }
2909
2910 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2911 {
2912 return(ctx->quiet_shutdown);
2913 }
2914
2915 void SSL_set_quiet_shutdown(SSL *s,int mode)
2916 {
2917 s->quiet_shutdown=mode;
2918 }
2919
2920 int SSL_get_quiet_shutdown(const SSL *s)
2921 {
2922 return(s->quiet_shutdown);
2923 }
2924
2925 void SSL_set_shutdown(SSL *s,int mode)
2926 {
2927 s->shutdown=mode;
2928 }
2929
2930 int SSL_get_shutdown(const SSL *s)
2931 {
2932 return(s->shutdown);
2933 }
2934
2935 int SSL_version(const SSL *s)
2936 {
2937 return(s->version);
2938 }
2939
2940 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2941 {
2942 return(ssl->ctx);
2943 }
2944
2945 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx)
2946 {
2947 if (ssl->ctx == ctx)
2948 return ssl->ctx;
2949 #ifndef OPENSSL_NO_TLSEXT
2950 if (ctx == NULL)
2951 ctx = ssl->initial_ctx;
2952 #endif
2953 if (ssl->cert != NULL)
2954 ssl_cert_free(ssl->cert);
2955 ssl->cert = ssl_cert_dup(ctx->cert);
2956 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
2957 if (ssl->ctx != NULL)
2958 SSL_CTX_free(ssl->ctx); /* decrement reference count */
2959 ssl->ctx = ctx;
2960 return(ssl->ctx);
2961 }
2962
2963 #ifndef OPENSSL_NO_STDIO
2964 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2965 {
2966 return(X509_STORE_set_default_paths(ctx->cert_store));
2967 }
2968
2969 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2970 const char *CApath)
2971 {
2972 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2973 }
2974 #endif
2975
2976 void SSL_set_info_callback(SSL *ssl,
2977 void (*cb)(const SSL *ssl,int type,int val))
2978 {
2979 ssl->info_callback=cb;
2980 }
2981
2982 /* One compiler (Diab DCC) doesn't like argument names in returned
2983 function pointer. */
2984 void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/)
2985 {
2986 return ssl->info_callback;
2987 }
2988
2989 int SSL_state(const SSL *ssl)
2990 {
2991 return(ssl->state);
2992 }
2993
2994 void SSL_set_state(SSL *ssl, int state)
2995 {
2996 ssl->state = state;
2997 }
2998
2999 void SSL_set_verify_result(SSL *ssl,long arg)
3000 {
3001 ssl->verify_result=arg;
3002 }
3003
3004 long SSL_get_verify_result(const SSL *ssl)
3005 {
3006 return(ssl->verify_result);
3007 }
3008
3009 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
3010 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
3011 {
3012 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
3013 new_func, dup_func, free_func);
3014 }
3015
3016 int SSL_set_ex_data(SSL *s,int idx,void *arg)
3017 {
3018 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
3019 }
3020
3021 void *SSL_get_ex_data(const SSL *s,int idx)
3022 {
3023 return(CRYPTO_get_ex_data(&s->ex_data,idx));
3024 }
3025
3026 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
3027 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
3028 {
3029 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
3030 new_func, dup_func, free_func);
3031 }
3032
3033 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
3034 {
3035 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
3036 }
3037
3038 void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx)
3039 {
3040 return(CRYPTO_get_ex_data(&s->ex_data,idx));
3041 }
3042
3043 int ssl_ok(SSL *s)
3044 {
3045 return(1);
3046 }
3047
3048 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3049 {
3050 return(ctx->cert_store);
3051 }
3052
3053 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
3054 {
3055 if (ctx->cert_store != NULL)
3056 X509_STORE_free(ctx->cert_store);
3057 ctx->cert_store=store;
3058 }
3059
3060 int SSL_want(const SSL *s)
3061 {
3062 return(s->rwstate);
3063 }
3064
3065 /*!
3066 * \brief Set the callback for generating temporary RSA keys.
3067 * \param ctx the SSL context.
3068 * \param cb the callback
3069 */
3070
3071 #ifndef OPENSSL_NO_RSA
3072 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
3073 int is_export,
3074 int keylength))
3075 {
3076 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
3077 }
3078
3079 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
3080 int is_export,
3081 int keylength))
3082 {
3083 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
3084 }
3085 #endif
3086
3087 #ifdef DOXYGEN
3088 /*!
3089 * \brief The RSA temporary key callback function.
3090 * \param ssl the SSL session.
3091 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3092 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3093 * of the required key in bits.
3094 * \return the temporary RSA key.
3095 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3096 */
3097
3098 RSA *cb(SSL *ssl,int is_export,int keylength)
3099 {}
3100 #endif
3101
3102 /*!
3103 * \brief Set the callback for generating temporary DH keys.
3104 * \param ctx the SSL context.
3105 * \param dh the callback
3106 */
3107
3108 #ifndef OPENSSL_NO_DH
3109 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
3110 int keylength))
3111 {
3112 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
3113 }
3114
3115 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
3116 int keylength))
3117 {
3118 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
3119 }
3120 #endif
3121
3122 #ifndef OPENSSL_NO_ECDH
3123 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
3124 int keylength))
3125 {
3126 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
3127 }
3128
3129 void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
3130 int keylength))
3131 {
3132 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
3133 }
3134 #endif
3135
3136 #ifndef OPENSSL_NO_PSK
3137 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3138 {
3139 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
3140 {
3141 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3142 return 0;
3143 }
3144 if (ctx->psk_identity_hint != NULL)
3145 OPENSSL_free(ctx->psk_identity_hint);
3146 if (identity_hint != NULL)
3147 {
3148 ctx->psk_identity_hint = BUF_strdup(identity_hint);
3149 if (ctx->psk_identity_hint == NULL)
3150 return 0;
3151 }
3152 else
3153 ctx->psk_identity_hint = NULL;
3154 return 1;
3155 }
3156
3157 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3158 {
3159 if (s == NULL)
3160 return 0;
3161
3162 if (s->session == NULL)
3163 return 1; /* session not created yet, ignored */
3164
3165 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
3166 {
3167 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3168 return 0;
3169 }
3170 if (s->session->psk_identity_hint != NULL)
3171 OPENSSL_free(s->session->psk_identity_hint);
3172 if (identity_hint != NULL)
3173 {
3174 s->session->psk_identity_hint = BUF_strdup(identity_hint);
3175 if (s->session->psk_identity_hint == NULL)
3176 return 0;
3177 }
3178 else
3179 s->session->psk_identity_hint = NULL;
3180 return 1;
3181 }
3182
3183 const char *SSL_get_psk_identity_hint(const SSL *s)
3184 {
3185 if (s == NULL || s->session == NULL)
3186 return NULL;
3187 return(s->session->psk_identity_hint);
3188 }
3189
3190 const char *SSL_get_psk_identity(const SSL *s)
3191 {
3192 if (s == NULL || s->session == NULL)
3193 return NULL;
3194 return(s->session->psk_identity);
3195 }
3196
3197 void SSL_set_psk_client_callback(SSL *s,
3198 unsigned int (*cb)(SSL *ssl, const char *hint,
3199 char *identity, unsigned int max_identity_len, unsigned char *psk,
3200 unsigned int max_psk_len))
3201 {
3202 s->psk_client_callback = cb;
3203 }
3204
3205 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3206 unsigned int (*cb)(SSL *ssl, const char *hint,
3207 char *identity, unsigned int max_identity_len, unsigned char *psk,
3208 unsigned int max_psk_len))
3209 {
3210 ctx->psk_client_callback = cb;
3211 }
3212
3213 void SSL_set_psk_server_callback(SSL *s,
3214 unsigned int (*cb)(SSL *ssl, const char *identity,
3215 unsigned char *psk, unsigned int max_psk_len))
3216 {
3217 s->psk_server_callback = cb;
3218 }
3219
3220 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3221 unsigned int (*cb)(SSL *ssl, const char *identity,
3222 unsigned char *psk, unsigned int max_psk_len))
3223 {
3224 ctx->psk_server_callback = cb;
3225 }
3226 #endif
3227
3228 void 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))
3229 {
3230 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3231 }
3232 void 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))
3233 {
3234 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3235 }
3236
3237 /* Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3238 * vairable, freeing EVP_MD_CTX previously stored in that variable, if
3239 * any. If EVP_MD pointer is passed, initializes ctx with this md
3240 * Returns newly allocated ctx;
3241 */
3242
3243 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md)
3244 {
3245 ssl_clear_hash_ctx(hash);
3246 *hash = EVP_MD_CTX_create();
3247 if (md) EVP_DigestInit_ex(*hash,md,NULL);
3248 return *hash;
3249 }
3250 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3251 {
3252
3253 if (*hash) EVP_MD_CTX_destroy(*hash);
3254 *hash=NULL;
3255 }
3256
3257 void SSL_set_debug(SSL *s, int debug)
3258 {
3259 s->debug = debug;
3260 }
3261
3262 int SSL_cache_hit(SSL *s)
3263 {
3264 return s->hit;
3265 }
3266
3267 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
3268 #include "../crypto/bio/bss_file.c"
3269 #endif
3270
3271 IMPLEMENT_STACK_OF(SSL_CIPHER)
3272 IMPLEMENT_STACK_OF(SSL_COMP)
3273 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER,
3274 ssl_cipher_id);