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1/*! \file ssl/ssl_lib.c
2 * \brief Version independent SSL functions.
3 */
4/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * All rights reserved.
6 *
7 * This package is an SSL implementation written
8 * by Eric Young (eay@cryptsoft.com).
9 * The implementation was written so as to conform with Netscapes SSL.
10 *
11 * This library is free for commercial and non-commercial use as long as
12 * the following conditions are aheared to. The following conditions
13 * apply to all code found in this distribution, be it the RC4, RSA,
14 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
15 * included with this distribution is covered by the same copyright terms
16 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
17 *
18 * Copyright remains Eric Young's, and as such any Copyright notices in
19 * the code are not to be removed.
20 * If this package is used in a product, Eric Young should be given attribution
21 * as the author of the parts of the library used.
22 * This can be in the form of a textual message at program startup or
23 * in documentation (online or textual) provided with the package.
24 *
25 * Redistribution and use in source and binary forms, with or without
26 * modification, are permitted provided that the following conditions
27 * are met:
28 * 1. Redistributions of source code must retain the copyright
29 * notice, this list of conditions and the following disclaimer.
30 * 2. Redistributions in binary form must reproduce the above copyright
31 * notice, this list of conditions and the following disclaimer in the
32 * documentation and/or other materials provided with the distribution.
33 * 3. All advertising materials mentioning features or use of this software
34 * must display the following acknowledgement:
35 * "This product includes cryptographic software written by
36 * Eric Young (eay@cryptsoft.com)"
37 * The word 'cryptographic' can be left out if the rouines from the library
38 * being used are not cryptographic related :-).
39 * 4. If you include any Windows specific code (or a derivative thereof) from
40 * the apps directory (application code) you must include an acknowledgement:
41 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
42 *
43 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
46 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * SUCH DAMAGE.
54 *
55 * The licence and distribution terms for any publically available version or
56 * derivative of this code cannot be changed. i.e. this code cannot simply be
57 * copied and put under another distribution licence
58 * [including the GNU Public Licence.]
59 */
60/* ====================================================================
61 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
62 *
63 * Redistribution and use in source and binary forms, with or without
64 * modification, are permitted provided that the following conditions
65 * are met:
66 *
67 * 1. Redistributions of source code must retain the above copyright
68 * notice, this list of conditions and the following disclaimer.
69 *
70 * 2. Redistributions in binary form must reproduce the above copyright
71 * notice, this list of conditions and the following disclaimer in
72 * the documentation and/or other materials provided with the
73 * distribution.
74 *
75 * 3. All advertising materials mentioning features or use of this
76 * software must display the following acknowledgment:
77 * "This product includes software developed by the OpenSSL Project
78 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
79 *
80 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
81 * endorse or promote products derived from this software without
82 * prior written permission. For written permission, please contact
83 * openssl-core@openssl.org.
84 *
85 * 5. Products derived from this software may not be called "OpenSSL"
86 * nor may "OpenSSL" appear in their names without prior written
87 * permission of the OpenSSL Project.
88 *
89 * 6. Redistributions of any form whatsoever must retain the following
90 * acknowledgment:
91 * "This product includes software developed by the OpenSSL Project
92 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
93 *
94 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
95 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
96 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
97 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
98 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
99 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
100 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
101 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
102 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
103 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
104 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
105 * OF THE POSSIBILITY OF SUCH DAMAGE.
106 * ====================================================================
107 *
108 * This product includes cryptographic software written by Eric Young
109 * (eay@cryptsoft.com). This product includes software written by Tim
110 * Hudson (tjh@cryptsoft.com).
111 *
112 */
113/* ====================================================================
114 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
115 * ECC cipher suite support in OpenSSL originally developed by
116 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
117 */
118/* ====================================================================
119 * Copyright 2005 Nokia. All rights reserved.
120 *
121 * The portions of the attached software ("Contribution") is developed by
122 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
123 * license.
124 *
125 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
126 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
127 * support (see RFC 4279) to OpenSSL.
128 *
129 * No patent licenses or other rights except those expressly stated in
130 * the OpenSSL open source license shall be deemed granted or received
131 * expressly, by implication, estoppel, or otherwise.
132 *
133 * No assurances are provided by Nokia that the Contribution does not
134 * infringe the patent or other intellectual property rights of any third
135 * party or that the license provides you with all the necessary rights
136 * to make use of the Contribution.
137 *
138 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
139 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
140 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
141 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
142 * OTHERWISE.
143 */
144
145#ifdef REF_CHECK
146# include <assert.h>
147#endif
148#include <stdio.h>
149#include "ssl_locl.h"
150#include "kssl_lcl.h"
151#include <openssl/objects.h>
152#include <openssl/lhash.h>
153#include <openssl/x509v3.h>
154#include <openssl/rand.h>
155#include <openssl/ocsp.h>
156#ifndef OPENSSL_NO_DH
157#include <openssl/dh.h>
158#endif
159#ifndef OPENSSL_NO_ENGINE
160#include <openssl/engine.h>
161#endif
162
163const char *SSL_version_str=OPENSSL_VERSION_TEXT;
164
165SSL3_ENC_METHOD ssl3_undef_enc_method={
166 /* evil casts, but these functions are only called if there's a library bug */
167 (int (*)(SSL *,int))ssl_undefined_function,
168 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
169 ssl_undefined_function,
170 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
171 (int (*)(SSL*, int))ssl_undefined_function,
172 (int (*)(SSL *, const char*, int, unsigned char *))ssl_undefined_function,
173 0, /* finish_mac_length */
174 (int (*)(SSL *, int, unsigned char *))ssl_undefined_function,
175 NULL, /* client_finished_label */
176 0, /* client_finished_label_len */
177 NULL, /* server_finished_label */
178 0, /* server_finished_label_len */
179 (int (*)(int))ssl_undefined_function
180 };
181
182int SSL_clear(SSL *s)
183 {
184
185 if (s->method == NULL)
186 {
187 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
188 return(0);
189 }
190
191 if (ssl_clear_bad_session(s))
192 {
193 SSL_SESSION_free(s->session);
194 s->session=NULL;
195 }
196
197 s->error=0;
198 s->hit=0;
199 s->shutdown=0;
200
201#if 0 /* Disabled since version 1.10 of this file (early return not
202 * needed because SSL_clear is not called when doing renegotiation) */
203 /* This is set if we are doing dynamic renegotiation so keep
204 * the old cipher. It is sort of a SSL_clear_lite :-) */
205 if (s->new_session) return(1);
206#else
207 if (s->new_session)
208 {
209 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR);
210 return 0;
211 }
212#endif
213
214 s->type=0;
215
216 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
217
218 s->version=s->method->version;
219 s->client_version=s->version;
220 s->rwstate=SSL_NOTHING;
221 s->rstate=SSL_ST_READ_HEADER;
222#if 0
223 s->read_ahead=s->ctx->read_ahead;
224#endif
225
226 if (s->init_buf != NULL)
227 {
228 BUF_MEM_free(s->init_buf);
229 s->init_buf=NULL;
230 }
231
232 ssl_clear_cipher_ctx(s);
233 ssl_clear_hash_ctx(&s->read_hash);
234 ssl_clear_hash_ctx(&s->write_hash);
235
236 s->first_packet=0;
237
238#if 1
239 /* Check to see if we were changed into a different method, if
240 * so, revert back if we are not doing session-id reuse. */
241 if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method))
242 {
243 s->method->ssl_free(s);
244 s->method=s->ctx->method;
245 if (!s->method->ssl_new(s))
246 return(0);
247 }
248 else
249#endif
250 s->method->ssl_clear(s);
251 return(1);
252 }
253
254/** Used to change an SSL_CTXs default SSL method type */
255int SSL_CTX_set_ssl_version(SSL_CTX *ctx,const SSL_METHOD *meth)
256 {
257 STACK_OF(SSL_CIPHER) *sk;
258
259 ctx->method=meth;
260
261 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
262 &(ctx->cipher_list_by_id),
263 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
264 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
265 {
266 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
267 return(0);
268 }
269 return(1);
270 }
271
272SSL *SSL_new(SSL_CTX *ctx)
273 {
274 SSL *s;
275
276 if (ctx == NULL)
277 {
278 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
279 return(NULL);
280 }
281 if (ctx->method == NULL)
282 {
283 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
284 return(NULL);
285 }
286
287 s=(SSL *)OPENSSL_malloc(sizeof(SSL));
288 if (s == NULL) goto err;
289 memset(s,0,sizeof(SSL));
290
291#ifndef OPENSSL_NO_KRB5
292 s->kssl_ctx = kssl_ctx_new();
293#endif /* OPENSSL_NO_KRB5 */
294
295 s->options=ctx->options;
296 s->mode=ctx->mode;
297 s->max_cert_list=ctx->max_cert_list;
298
299 if (ctx->cert != NULL)
300 {
301 /* Earlier library versions used to copy the pointer to
302 * the CERT, not its contents; only when setting new
303 * parameters for the per-SSL copy, ssl_cert_new would be
304 * called (and the direct reference to the per-SSL_CTX
305 * settings would be lost, but those still were indirectly
306 * accessed for various purposes, and for that reason they
307 * used to be known as s->ctx->default_cert).
308 * Now we don't look at the SSL_CTX's CERT after having
309 * duplicated it once. */
310
311 s->cert = ssl_cert_dup(ctx->cert);
312 if (s->cert == NULL)
313 goto err;
314 }
315 else
316 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
317
318 s->read_ahead=ctx->read_ahead;
319 s->msg_callback=ctx->msg_callback;
320 s->msg_callback_arg=ctx->msg_callback_arg;
321 s->verify_mode=ctx->verify_mode;
322#if 0
323 s->verify_depth=ctx->verify_depth;
324#endif
325 s->sid_ctx_length=ctx->sid_ctx_length;
326 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
327 memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
328 s->verify_callback=ctx->default_verify_callback;
329 s->generate_session_id=ctx->generate_session_id;
330
331 s->param = X509_VERIFY_PARAM_new();
332 if (!s->param)
333 goto err;
334 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
335#if 0
336 s->purpose = ctx->purpose;
337 s->trust = ctx->trust;
338#endif
339 s->quiet_shutdown=ctx->quiet_shutdown;
340 s->max_send_fragment = ctx->max_send_fragment;
341
342 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
343 s->ctx=ctx;
344#ifndef OPENSSL_NO_TLSEXT
345 s->tlsext_debug_cb = 0;
346 s->tlsext_debug_arg = NULL;
347 s->tlsext_ticket_expected = 0;
348 s->tlsext_status_type = -1;
349 s->tlsext_status_expected = 0;
350 s->tlsext_ocsp_ids = NULL;
351 s->tlsext_ocsp_exts = NULL;
352 s->tlsext_ocsp_resp = NULL;
353 s->tlsext_ocsp_resplen = -1;
354 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
355 s->initial_ctx=ctx;
356#endif
357
358 s->verify_result=X509_V_OK;
359
360 s->method=ctx->method;
361
362 if (!s->method->ssl_new(s))
363 goto err;
364
365 s->references=1;
366 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
367
368 SSL_clear(s);
369
370 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
371
372#ifndef OPENSSL_NO_PSK
373 s->psk_client_callback=ctx->psk_client_callback;
374 s->psk_server_callback=ctx->psk_server_callback;
375#endif
376
377 return(s);
378err:
379 if (s != NULL)
380 {
381 if (s->cert != NULL)
382 ssl_cert_free(s->cert);
383 if (s->ctx != NULL)
384 SSL_CTX_free(s->ctx); /* decrement reference count */
385 OPENSSL_free(s);
386 }
387 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
388 return(NULL);
389 }
390
391int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
392 unsigned int sid_ctx_len)
393 {
394 if(sid_ctx_len > sizeof ctx->sid_ctx)
395 {
396 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
397 return 0;
398 }
399 ctx->sid_ctx_length=sid_ctx_len;
400 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
401
402 return 1;
403 }
404
405int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
406 unsigned int sid_ctx_len)
407 {
408 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
409 {
410 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
411 return 0;
412 }
413 ssl->sid_ctx_length=sid_ctx_len;
414 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
415
416 return 1;
417 }
418
419int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
420 {
421 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
422 ctx->generate_session_id = cb;
423 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
424 return 1;
425 }
426
427int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
428 {
429 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
430 ssl->generate_session_id = cb;
431 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
432 return 1;
433 }
434
435int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
436 unsigned int id_len)
437 {
438 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
439 * we can "construct" a session to give us the desired check - ie. to
440 * find if there's a session in the hash table that would conflict with
441 * any new session built out of this id/id_len and the ssl_version in
442 * use by this SSL. */
443 SSL_SESSION r, *p;
444
445 if(id_len > sizeof r.session_id)
446 return 0;
447
448 r.ssl_version = ssl->version;
449 r.session_id_length = id_len;
450 memcpy(r.session_id, id, id_len);
451 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
452 * callback is calling us to check the uniqueness of a shorter ID, it
453 * must be compared as a padded-out ID because that is what it will be
454 * converted to when the callback has finished choosing it. */
455 if((r.ssl_version == SSL2_VERSION) &&
456 (id_len < SSL2_SSL_SESSION_ID_LENGTH))
457 {
458 memset(r.session_id + id_len, 0,
459 SSL2_SSL_SESSION_ID_LENGTH - id_len);
460 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
461 }
462
463 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
464 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
465 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
466 return (p != NULL);
467 }
468
469int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
470 {
471 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
472 }
473
474int SSL_set_purpose(SSL *s, int purpose)
475 {
476 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
477 }
478
479int SSL_CTX_set_trust(SSL_CTX *s, int trust)
480 {
481 return X509_VERIFY_PARAM_set_trust(s->param, trust);
482 }
483
484int SSL_set_trust(SSL *s, int trust)
485 {
486 return X509_VERIFY_PARAM_set_trust(s->param, trust);
487 }
488
489int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
490 {
491 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
492 }
493
494int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
495 {
496 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
497 }
498
499void SSL_free(SSL *s)
500 {
501 int i;
502
503 if(s == NULL)
504 return;
505
506 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
507#ifdef REF_PRINT
508 REF_PRINT("SSL",s);
509#endif
510 if (i > 0) return;
511#ifdef REF_CHECK
512 if (i < 0)
513 {
514 fprintf(stderr,"SSL_free, bad reference count\n");
515 abort(); /* ok */
516 }
517#endif
518
519 if (s->param)
520 X509_VERIFY_PARAM_free(s->param);
521
522 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
523
524 if (s->bbio != NULL)
525 {
526 /* If the buffering BIO is in place, pop it off */
527 if (s->bbio == s->wbio)
528 {
529 s->wbio=BIO_pop(s->wbio);
530 }
531 BIO_free(s->bbio);
532 s->bbio=NULL;
533 }
534 if (s->rbio != NULL)
535 BIO_free_all(s->rbio);
536 if ((s->wbio != NULL) && (s->wbio != s->rbio))
537 BIO_free_all(s->wbio);
538
539 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
540
541 /* add extra stuff */
542 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
543 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
544
545 /* Make the next call work :-) */
546 if (s->session != NULL)
547 {
548 ssl_clear_bad_session(s);
549 SSL_SESSION_free(s->session);
550 }
551
552 ssl_clear_cipher_ctx(s);
553 ssl_clear_hash_ctx(&s->read_hash);
554 ssl_clear_hash_ctx(&s->write_hash);
555
556 if (s->cert != NULL) ssl_cert_free(s->cert);
557 /* Free up if allocated */
558
559#ifndef OPENSSL_NO_TLSEXT
560 if (s->tlsext_hostname)
561 OPENSSL_free(s->tlsext_hostname);
562 if (s->initial_ctx) SSL_CTX_free(s->initial_ctx);
563#ifndef OPENSSL_NO_EC
564 if (s->tlsext_ecpointformatlist) OPENSSL_free(s->tlsext_ecpointformatlist);
565 if (s->tlsext_ellipticcurvelist) OPENSSL_free(s->tlsext_ellipticcurvelist);
566#endif /* OPENSSL_NO_EC */
567 if (s->tlsext_opaque_prf_input) OPENSSL_free(s->tlsext_opaque_prf_input);
568 if (s->tlsext_ocsp_exts)
569 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts,
570 X509_EXTENSION_free);
571 if (s->tlsext_ocsp_ids)
572 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
573 if (s->tlsext_ocsp_resp)
574 OPENSSL_free(s->tlsext_ocsp_resp);
575#endif
576
577 if (s->client_CA != NULL)
578 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
579
580 if (s->method != NULL) s->method->ssl_free(s);
581
582 if (s->ctx) SSL_CTX_free(s->ctx);
583
584#ifndef OPENSSL_NO_KRB5
585 if (s->kssl_ctx != NULL)
586 kssl_ctx_free(s->kssl_ctx);
587#endif /* OPENSSL_NO_KRB5 */
588
589 OPENSSL_free(s);
590 }
591
592void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
593 {
594 /* If the output buffering BIO is still in place, remove it
595 */
596 if (s->bbio != NULL)
597 {
598 if (s->wbio == s->bbio)
599 {
600 s->wbio=s->wbio->next_bio;
601 s->bbio->next_bio=NULL;
602 }
603 }
604 if ((s->rbio != NULL) && (s->rbio != rbio))
605 BIO_free_all(s->rbio);
606 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
607 BIO_free_all(s->wbio);
608 s->rbio=rbio;
609 s->wbio=wbio;
610 }
611
612BIO *SSL_get_rbio(const SSL *s)
613 { return(s->rbio); }
614
615BIO *SSL_get_wbio(const SSL *s)
616 { return(s->wbio); }
617
618int SSL_get_fd(const SSL *s)
619 {
620 return(SSL_get_rfd(s));
621 }
622
623int SSL_get_rfd(const SSL *s)
624 {
625 int ret= -1;
626 BIO *b,*r;
627
628 b=SSL_get_rbio(s);
629 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
630 if (r != NULL)
631 BIO_get_fd(r,&ret);
632 return(ret);
633 }
634
635int SSL_get_wfd(const SSL *s)
636 {
637 int ret= -1;
638 BIO *b,*r;
639
640 b=SSL_get_wbio(s);
641 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
642 if (r != NULL)
643 BIO_get_fd(r,&ret);
644 return(ret);
645 }
646
647#ifndef OPENSSL_NO_SOCK
648int SSL_set_fd(SSL *s,int fd)
649 {
650 int ret=0;
651 BIO *bio=NULL;
652
653 bio=BIO_new(BIO_s_socket());
654
655 if (bio == NULL)
656 {
657 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
658 goto err;
659 }
660 BIO_set_fd(bio,fd,BIO_NOCLOSE);
661 SSL_set_bio(s,bio,bio);
662 ret=1;
663err:
664 return(ret);
665 }
666
667int SSL_set_wfd(SSL *s,int fd)
668 {
669 int ret=0;
670 BIO *bio=NULL;
671
672 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
673 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
674 {
675 bio=BIO_new(BIO_s_socket());
676
677 if (bio == NULL)
678 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
679 BIO_set_fd(bio,fd,BIO_NOCLOSE);
680 SSL_set_bio(s,SSL_get_rbio(s),bio);
681 }
682 else
683 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
684 ret=1;
685err:
686 return(ret);
687 }
688
689int SSL_set_rfd(SSL *s,int fd)
690 {
691 int ret=0;
692 BIO *bio=NULL;
693
694 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
695 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
696 {
697 bio=BIO_new(BIO_s_socket());
698
699 if (bio == NULL)
700 {
701 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
702 goto err;
703 }
704 BIO_set_fd(bio,fd,BIO_NOCLOSE);
705 SSL_set_bio(s,bio,SSL_get_wbio(s));
706 }
707 else
708 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
709 ret=1;
710err:
711 return(ret);
712 }
713#endif
714
715
716/* return length of latest Finished message we sent, copy to 'buf' */
717size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
718 {
719 size_t ret = 0;
720
721 if (s->s3 != NULL)
722 {
723 ret = s->s3->tmp.finish_md_len;
724 if (count > ret)
725 count = ret;
726 memcpy(buf, s->s3->tmp.finish_md, count);
727 }
728 return ret;
729 }
730
731/* return length of latest Finished message we expected, copy to 'buf' */
732size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
733 {
734 size_t ret = 0;
735
736 if (s->s3 != NULL)
737 {
738 ret = s->s3->tmp.peer_finish_md_len;
739 if (count > ret)
740 count = ret;
741 memcpy(buf, s->s3->tmp.peer_finish_md, count);
742 }
743 return ret;
744 }
745
746
747int SSL_get_verify_mode(const SSL *s)
748 {
749 return(s->verify_mode);
750 }
751
752int SSL_get_verify_depth(const SSL *s)
753 {
754 return X509_VERIFY_PARAM_get_depth(s->param);
755 }
756
757int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *)
758 {
759 return(s->verify_callback);
760 }
761
762int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
763 {
764 return(ctx->verify_mode);
765 }
766
767int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
768 {
769 return X509_VERIFY_PARAM_get_depth(ctx->param);
770 }
771
772int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *)
773 {
774 return(ctx->default_verify_callback);
775 }
776
777void SSL_set_verify(SSL *s,int mode,
778 int (*callback)(int ok,X509_STORE_CTX *ctx))
779 {
780 s->verify_mode=mode;
781 if (callback != NULL)
782 s->verify_callback=callback;
783 }
784
785void SSL_set_verify_depth(SSL *s,int depth)
786 {
787 X509_VERIFY_PARAM_set_depth(s->param, depth);
788 }
789
790void SSL_set_read_ahead(SSL *s,int yes)
791 {
792 s->read_ahead=yes;
793 }
794
795int SSL_get_read_ahead(const SSL *s)
796 {
797 return(s->read_ahead);
798 }
799
800int SSL_pending(const SSL *s)
801 {
802 /* SSL_pending cannot work properly if read-ahead is enabled
803 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
804 * and it is impossible to fix since SSL_pending cannot report
805 * errors that may be observed while scanning the new data.
806 * (Note that SSL_pending() is often used as a boolean value,
807 * so we'd better not return -1.)
808 */
809 return(s->method->ssl_pending(s));
810 }
811
812X509 *SSL_get_peer_certificate(const SSL *s)
813 {
814 X509 *r;
815
816 if ((s == NULL) || (s->session == NULL))
817 r=NULL;
818 else
819 r=s->session->peer;
820
821 if (r == NULL) return(r);
822
823 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
824
825 return(r);
826 }
827
828STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
829 {
830 STACK_OF(X509) *r;
831
832 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
833 r=NULL;
834 else
835 r=s->session->sess_cert->cert_chain;
836
837 /* If we are a client, cert_chain includes the peer's own
838 * certificate; if we are a server, it does not. */
839
840 return(r);
841 }
842
843/* Now in theory, since the calling process own 't' it should be safe to
844 * modify. We need to be able to read f without being hassled */
845void SSL_copy_session_id(SSL *t,const SSL *f)
846 {
847 CERT *tmp;
848
849 /* Do we need to to SSL locking? */
850 SSL_set_session(t,SSL_get_session(f));
851
852 /* what if we are setup as SSLv2 but want to talk SSLv3 or
853 * vice-versa */
854 if (t->method != f->method)
855 {
856 t->method->ssl_free(t); /* cleanup current */
857 t->method=f->method; /* change method */
858 t->method->ssl_new(t); /* setup new */
859 }
860
861 tmp=t->cert;
862 if (f->cert != NULL)
863 {
864 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
865 t->cert=f->cert;
866 }
867 else
868 t->cert=NULL;
869 if (tmp != NULL) ssl_cert_free(tmp);
870 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
871 }
872
873/* Fix this so it checks all the valid key/cert options */
874int SSL_CTX_check_private_key(const SSL_CTX *ctx)
875 {
876 if ( (ctx == NULL) ||
877 (ctx->cert == NULL) ||
878 (ctx->cert->key->x509 == NULL))
879 {
880 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
881 return(0);
882 }
883 if (ctx->cert->key->privatekey == NULL)
884 {
885 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
886 return(0);
887 }
888 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
889 }
890
891/* Fix this function so that it takes an optional type parameter */
892int SSL_check_private_key(const SSL *ssl)
893 {
894 if (ssl == NULL)
895 {
896 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
897 return(0);
898 }
899 if (ssl->cert == NULL)
900 {
901 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
902 return 0;
903 }
904 if (ssl->cert->key->x509 == NULL)
905 {
906 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
907 return(0);
908 }
909 if (ssl->cert->key->privatekey == NULL)
910 {
911 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
912 return(0);
913 }
914 return(X509_check_private_key(ssl->cert->key->x509,
915 ssl->cert->key->privatekey));
916 }
917
918int SSL_accept(SSL *s)
919 {
920 if (s->handshake_func == 0)
921 /* Not properly initialized yet */
922 SSL_set_accept_state(s);
923
924 return(s->method->ssl_accept(s));
925 }
926
927int SSL_connect(SSL *s)
928 {
929 if (s->handshake_func == 0)
930 /* Not properly initialized yet */
931 SSL_set_connect_state(s);
932
933 return(s->method->ssl_connect(s));
934 }
935
936long SSL_get_default_timeout(const SSL *s)
937 {
938 return(s->method->get_timeout());
939 }
940
941int SSL_read(SSL *s,void *buf,int num)
942 {
943 if (s->handshake_func == 0)
944 {
945 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
946 return -1;
947 }
948
949 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
950 {
951 s->rwstate=SSL_NOTHING;
952 return(0);
953 }
954 return(s->method->ssl_read(s,buf,num));
955 }
956
957int SSL_peek(SSL *s,void *buf,int num)
958 {
959 if (s->handshake_func == 0)
960 {
961 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
962 return -1;
963 }
964
965 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
966 {
967 return(0);
968 }
969 return(s->method->ssl_peek(s,buf,num));
970 }
971
972int SSL_write(SSL *s,const void *buf,int num)
973 {
974 if (s->handshake_func == 0)
975 {
976 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
977 return -1;
978 }
979
980 if (s->shutdown & SSL_SENT_SHUTDOWN)
981 {
982 s->rwstate=SSL_NOTHING;
983 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
984 return(-1);
985 }
986 return(s->method->ssl_write(s,buf,num));
987 }
988
989int SSL_shutdown(SSL *s)
990 {
991 /* Note that this function behaves differently from what one might
992 * expect. Return values are 0 for no success (yet),
993 * 1 for success; but calling it once is usually not enough,
994 * even if blocking I/O is used (see ssl3_shutdown).
995 */
996
997 if (s->handshake_func == 0)
998 {
999 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1000 return -1;
1001 }
1002
1003 if ((s != NULL) && !SSL_in_init(s))
1004 return(s->method->ssl_shutdown(s));
1005 else
1006 return(1);
1007 }
1008
1009int SSL_renegotiate(SSL *s)
1010 {
1011 if (s->new_session == 0)
1012 {
1013 s->new_session=1;
1014 }
1015 return(s->method->ssl_renegotiate(s));
1016 }
1017
1018int SSL_renegotiate_pending(SSL *s)
1019 {
1020 /* becomes true when negotiation is requested;
1021 * false again once a handshake has finished */
1022 return (s->new_session != 0);
1023 }
1024
1025long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
1026 {
1027 long l;
1028
1029 switch (cmd)
1030 {
1031 case SSL_CTRL_GET_READ_AHEAD:
1032 return(s->read_ahead);
1033 case SSL_CTRL_SET_READ_AHEAD:
1034 l=s->read_ahead;
1035 s->read_ahead=larg;
1036 return(l);
1037
1038 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1039 s->msg_callback_arg = parg;
1040 return 1;
1041
1042 case SSL_CTRL_OPTIONS:
1043 return(s->options|=larg);
1044 case SSL_CTRL_CLEAR_OPTIONS:
1045 return(s->options&=~larg);
1046 case SSL_CTRL_MODE:
1047 return(s->mode|=larg);
1048 case SSL_CTRL_CLEAR_MODE:
1049 return(s->mode &=~larg);
1050 case SSL_CTRL_GET_MAX_CERT_LIST:
1051 return(s->max_cert_list);
1052 case SSL_CTRL_SET_MAX_CERT_LIST:
1053 l=s->max_cert_list;
1054 s->max_cert_list=larg;
1055 return(l);
1056 case SSL_CTRL_SET_MTU:
1057 if (larg < (long)dtls1_min_mtu())
1058 return 0;
1059
1060 if (SSL_version(s) == DTLS1_VERSION ||
1061 SSL_version(s) == DTLS1_BAD_VER)
1062 {
1063 s->d1->mtu = larg;
1064 return larg;
1065 }
1066 return 0;
1067 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1068 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1069 return 0;
1070 s->max_send_fragment = larg;
1071 return 1;
1072 case SSL_CTRL_GET_RI_SUPPORT:
1073 if (s->s3)
1074 return s->s3->send_connection_binding;
1075 else return 0;
1076 default:
1077 return(s->method->ssl_ctrl(s,cmd,larg,parg));
1078 }
1079 }
1080
1081long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
1082 {
1083 switch(cmd)
1084 {
1085 case SSL_CTRL_SET_MSG_CALLBACK:
1086 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1087 return 1;
1088
1089 default:
1090 return(s->method->ssl_callback_ctrl(s,cmd,fp));
1091 }
1092 }
1093
1094LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1095 {
1096 return ctx->sessions;
1097 }
1098
1099long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
1100 {
1101 long l;
1102
1103 switch (cmd)
1104 {
1105 case SSL_CTRL_GET_READ_AHEAD:
1106 return(ctx->read_ahead);
1107 case SSL_CTRL_SET_READ_AHEAD:
1108 l=ctx->read_ahead;
1109 ctx->read_ahead=larg;
1110 return(l);
1111
1112 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1113 ctx->msg_callback_arg = parg;
1114 return 1;
1115
1116 case SSL_CTRL_GET_MAX_CERT_LIST:
1117 return(ctx->max_cert_list);
1118 case SSL_CTRL_SET_MAX_CERT_LIST:
1119 l=ctx->max_cert_list;
1120 ctx->max_cert_list=larg;
1121 return(l);
1122
1123 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1124 l=ctx->session_cache_size;
1125 ctx->session_cache_size=larg;
1126 return(l);
1127 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1128 return(ctx->session_cache_size);
1129 case SSL_CTRL_SET_SESS_CACHE_MODE:
1130 l=ctx->session_cache_mode;
1131 ctx->session_cache_mode=larg;
1132 return(l);
1133 case SSL_CTRL_GET_SESS_CACHE_MODE:
1134 return(ctx->session_cache_mode);
1135
1136 case SSL_CTRL_SESS_NUMBER:
1137 return(lh_SSL_SESSION_num_items(ctx->sessions));
1138 case SSL_CTRL_SESS_CONNECT:
1139 return(ctx->stats.sess_connect);
1140 case SSL_CTRL_SESS_CONNECT_GOOD:
1141 return(ctx->stats.sess_connect_good);
1142 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1143 return(ctx->stats.sess_connect_renegotiate);
1144 case SSL_CTRL_SESS_ACCEPT:
1145 return(ctx->stats.sess_accept);
1146 case SSL_CTRL_SESS_ACCEPT_GOOD:
1147 return(ctx->stats.sess_accept_good);
1148 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1149 return(ctx->stats.sess_accept_renegotiate);
1150 case SSL_CTRL_SESS_HIT:
1151 return(ctx->stats.sess_hit);
1152 case SSL_CTRL_SESS_CB_HIT:
1153 return(ctx->stats.sess_cb_hit);
1154 case SSL_CTRL_SESS_MISSES:
1155 return(ctx->stats.sess_miss);
1156 case SSL_CTRL_SESS_TIMEOUTS:
1157 return(ctx->stats.sess_timeout);
1158 case SSL_CTRL_SESS_CACHE_FULL:
1159 return(ctx->stats.sess_cache_full);
1160 case SSL_CTRL_OPTIONS:
1161 return(ctx->options|=larg);
1162 case SSL_CTRL_CLEAR_OPTIONS:
1163 return(ctx->options&=~larg);
1164 case SSL_CTRL_MODE:
1165 return(ctx->mode|=larg);
1166 case SSL_CTRL_CLEAR_MODE:
1167 return(ctx->mode&=~larg);
1168 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1169 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1170 return 0;
1171 ctx->max_send_fragment = larg;
1172 return 1;
1173 default:
1174 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
1175 }
1176 }
1177
1178long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
1179 {
1180 switch(cmd)
1181 {
1182 case SSL_CTRL_SET_MSG_CALLBACK:
1183 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1184 return 1;
1185
1186 default:
1187 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
1188 }
1189 }
1190
1191int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1192 {
1193 long l;
1194
1195 l=a->id-b->id;
1196 if (l == 0L)
1197 return(0);
1198 else
1199 return((l > 0)?1:-1);
1200 }
1201
1202int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1203 const SSL_CIPHER * const *bp)
1204 {
1205 long l;
1206
1207 l=(*ap)->id-(*bp)->id;
1208 if (l == 0L)
1209 return(0);
1210 else
1211 return((l > 0)?1:-1);
1212 }
1213
1214/** return a STACK of the ciphers available for the SSL and in order of
1215 * preference */
1216STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1217 {
1218 if (s != NULL)
1219 {
1220 if (s->cipher_list != NULL)
1221 {
1222 return(s->cipher_list);
1223 }
1224 else if ((s->ctx != NULL) &&
1225 (s->ctx->cipher_list != NULL))
1226 {
1227 return(s->ctx->cipher_list);
1228 }
1229 }
1230 return(NULL);
1231 }
1232
1233/** return a STACK of the ciphers available for the SSL and in order of
1234 * algorithm id */
1235STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1236 {
1237 if (s != NULL)
1238 {
1239 if (s->cipher_list_by_id != NULL)
1240 {
1241 return(s->cipher_list_by_id);
1242 }
1243 else if ((s->ctx != NULL) &&
1244 (s->ctx->cipher_list_by_id != NULL))
1245 {
1246 return(s->ctx->cipher_list_by_id);
1247 }
1248 }
1249 return(NULL);
1250 }
1251
1252/** The old interface to get the same thing as SSL_get_ciphers() */
1253const char *SSL_get_cipher_list(const SSL *s,int n)
1254 {
1255 SSL_CIPHER *c;
1256 STACK_OF(SSL_CIPHER) *sk;
1257
1258 if (s == NULL) return(NULL);
1259 sk=SSL_get_ciphers(s);
1260 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1261 return(NULL);
1262 c=sk_SSL_CIPHER_value(sk,n);
1263 if (c == NULL) return(NULL);
1264 return(c->name);
1265 }
1266
1267/** specify the ciphers to be used by default by the SSL_CTX */
1268int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1269 {
1270 STACK_OF(SSL_CIPHER) *sk;
1271
1272 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1273 &ctx->cipher_list_by_id,str);
1274 /* ssl_create_cipher_list may return an empty stack if it
1275 * was unable to find a cipher matching the given rule string
1276 * (for example if the rule string specifies a cipher which
1277 * has been disabled). This is not an error as far as
1278 * ssl_create_cipher_list is concerned, and hence
1279 * ctx->cipher_list and ctx->cipher_list_by_id has been
1280 * updated. */
1281 if (sk == NULL)
1282 return 0;
1283 else if (sk_SSL_CIPHER_num(sk) == 0)
1284 {
1285 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1286 return 0;
1287 }
1288 return 1;
1289 }
1290
1291/** specify the ciphers to be used by the SSL */
1292int SSL_set_cipher_list(SSL *s,const char *str)
1293 {
1294 STACK_OF(SSL_CIPHER) *sk;
1295
1296 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1297 &s->cipher_list_by_id,str);
1298 /* see comment in SSL_CTX_set_cipher_list */
1299 if (sk == NULL)
1300 return 0;
1301 else if (sk_SSL_CIPHER_num(sk) == 0)
1302 {
1303 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1304 return 0;
1305 }
1306 return 1;
1307 }
1308
1309/* works well for SSLv2, not so good for SSLv3 */
1310char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len)
1311 {
1312 char *end;
1313 STACK_OF(SSL_CIPHER) *sk;
1314 SSL_CIPHER *c;
1315 size_t curlen = 0;
1316 int i;
1317
1318 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1319 (len < 2))
1320 return(NULL);
1321
1322 sk=s->session->ciphers;
1323 buf[0] = '\0';
1324 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1325 {
1326 c=sk_SSL_CIPHER_value(sk,i);
1327 end = buf + curlen;
1328 if (strlcat(buf, c->name, len) >= len ||
1329 (curlen = strlcat(buf, ":", len)) >= len)
1330 {
1331 /* remove truncated cipher from list */
1332 *end = '\0';
1333 break;
1334 }
1335 }
1336 /* remove trailing colon */
1337 if ((end = strrchr(buf, ':')) != NULL)
1338 *end = '\0';
1339 return(buf);
1340 }
1341
1342int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
1343 int (*put_cb)(const SSL_CIPHER *, unsigned char *))
1344 {
1345 int i,j=0;
1346 SSL_CIPHER *c;
1347 unsigned char *q;
1348#ifndef OPENSSL_NO_KRB5
1349 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1350#endif /* OPENSSL_NO_KRB5 */
1351
1352 if (sk == NULL) return(0);
1353 q=p;
1354
1355 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1356 {
1357 c=sk_SSL_CIPHER_value(sk,i);
1358#ifndef OPENSSL_NO_KRB5
1359 if (((c->algorithm_mkey & SSL_kKRB5) || (c->algorithm_auth & SSL_aKRB5)) &&
1360 nokrb5)
1361 continue;
1362#endif /* OPENSSL_NO_KRB5 */
1363#ifndef OPENSSL_NO_PSK
1364 /* with PSK there must be client callback set */
1365 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK)) &&
1366 s->psk_client_callback == NULL)
1367 continue;
1368#endif /* OPENSSL_NO_PSK */
1369 j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p);
1370 p+=j;
1371 }
1372 /* If p == q, no ciphers and caller indicates an error. Otherwise
1373 * add SCSV if not renegotiating.
1374 */
1375 if (p != q && !s->new_session)
1376 {
1377 static SSL_CIPHER scsv =
1378 {
1379 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1380 };
1381 j = put_cb ? put_cb(&scsv,p) : ssl_put_cipher_by_char(s,&scsv,p);
1382 p+=j;
1383#ifdef OPENSSL_RI_DEBUG
1384 fprintf(stderr, "SCSV sent by client\n");
1385#endif
1386 }
1387
1388 return(p-q);
1389 }
1390
1391STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1392 STACK_OF(SSL_CIPHER) **skp)
1393 {
1394 const SSL_CIPHER *c;
1395 STACK_OF(SSL_CIPHER) *sk;
1396 int i,n;
1397 if (s->s3)
1398 s->s3->send_connection_binding = 0;
1399
1400 n=ssl_put_cipher_by_char(s,NULL,NULL);
1401 if ((num%n) != 0)
1402 {
1403 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1404 return(NULL);
1405 }
1406 if ((skp == NULL) || (*skp == NULL))
1407 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1408 else
1409 {
1410 sk= *skp;
1411 sk_SSL_CIPHER_zero(sk);
1412 }
1413
1414 for (i=0; i<num; i+=n)
1415 {
1416 /* Check for SCSV */
1417 if (s->s3 && (n != 3 || !p[0]) &&
1418 (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1419 (p[n-1] == (SSL3_CK_SCSV & 0xff)))
1420 {
1421 /* SCSV fatal if renegotiating */
1422 if (s->new_session)
1423 {
1424 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1425 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1426 goto err;
1427 }
1428 s->s3->send_connection_binding = 1;
1429 p += n;
1430#ifdef OPENSSL_RI_DEBUG
1431 fprintf(stderr, "SCSV received by server\n");
1432#endif
1433 continue;
1434 }
1435
1436 c=ssl_get_cipher_by_char(s,p);
1437 p+=n;
1438 if (c != NULL)
1439 {
1440 if (!sk_SSL_CIPHER_push(sk,c))
1441 {
1442 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1443 goto err;
1444 }
1445 }
1446 }
1447
1448 if (skp != NULL)
1449 *skp=sk;
1450 return(sk);
1451err:
1452 if ((skp == NULL) || (*skp == NULL))
1453 sk_SSL_CIPHER_free(sk);
1454 return(NULL);
1455 }
1456
1457
1458#ifndef OPENSSL_NO_TLSEXT
1459/** return a servername extension value if provided in Client Hello, or NULL.
1460 * So far, only host_name types are defined (RFC 3546).
1461 */
1462
1463const char *SSL_get_servername(const SSL *s, const int type)
1464 {
1465 if (type != TLSEXT_NAMETYPE_host_name)
1466 return NULL;
1467
1468 return s->session && !s->tlsext_hostname ?
1469 s->session->tlsext_hostname :
1470 s->tlsext_hostname;
1471 }
1472
1473int SSL_get_servername_type(const SSL *s)
1474 {
1475 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname))
1476 return TLSEXT_NAMETYPE_host_name;
1477 return -1;
1478 }
1479#endif
1480
1481static unsigned long ssl_session_hash(const SSL_SESSION *a)
1482 {
1483 unsigned long l;
1484
1485 l=(unsigned long)
1486 ((unsigned int) a->session_id[0] )|
1487 ((unsigned int) a->session_id[1]<< 8L)|
1488 ((unsigned long)a->session_id[2]<<16L)|
1489 ((unsigned long)a->session_id[3]<<24L);
1490 return(l);
1491 }
1492
1493/* NB: If this function (or indeed the hash function which uses a sort of
1494 * coarser function than this one) is changed, ensure
1495 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1496 * able to construct an SSL_SESSION that will collide with any existing session
1497 * with a matching session ID. */
1498static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
1499 {
1500 if (a->ssl_version != b->ssl_version)
1501 return(1);
1502 if (a->session_id_length != b->session_id_length)
1503 return(1);
1504 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1505 }
1506
1507/* These wrapper functions should remain rather than redeclaring
1508 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1509 * variable. The reason is that the functions aren't static, they're exposed via
1510 * ssl.h. */
1511static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1512static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1513
1514SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1515 {
1516 SSL_CTX *ret=NULL;
1517
1518 if (meth == NULL)
1519 {
1520 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1521 return(NULL);
1522 }
1523
1524 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1525 {
1526 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1527 goto err;
1528 }
1529 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1530 if (ret == NULL)
1531 goto err;
1532
1533 memset(ret,0,sizeof(SSL_CTX));
1534
1535 ret->method=meth;
1536
1537 ret->cert_store=NULL;
1538 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1539 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1540 ret->session_cache_head=NULL;
1541 ret->session_cache_tail=NULL;
1542
1543 /* We take the system default */
1544 ret->session_timeout=meth->get_timeout();
1545
1546 ret->new_session_cb=0;
1547 ret->remove_session_cb=0;
1548 ret->get_session_cb=0;
1549 ret->generate_session_id=0;
1550
1551 memset((char *)&ret->stats,0,sizeof(ret->stats));
1552
1553 ret->references=1;
1554 ret->quiet_shutdown=0;
1555
1556/* ret->cipher=NULL;*/
1557/* ret->s2->challenge=NULL;
1558 ret->master_key=NULL;
1559 ret->key_arg=NULL;
1560 ret->s2->conn_id=NULL; */
1561
1562 ret->info_callback=NULL;
1563
1564 ret->app_verify_callback=0;
1565 ret->app_verify_arg=NULL;
1566
1567 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1568 ret->read_ahead=0;
1569 ret->msg_callback=0;
1570 ret->msg_callback_arg=NULL;
1571 ret->verify_mode=SSL_VERIFY_NONE;
1572#if 0
1573 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1574#endif
1575 ret->sid_ctx_length=0;
1576 ret->default_verify_callback=NULL;
1577 if ((ret->cert=ssl_cert_new()) == NULL)
1578 goto err;
1579
1580 ret->default_passwd_callback=0;
1581 ret->default_passwd_callback_userdata=NULL;
1582 ret->client_cert_cb=0;
1583 ret->app_gen_cookie_cb=0;
1584 ret->app_verify_cookie_cb=0;
1585
1586 ret->sessions=lh_SSL_SESSION_new();
1587 if (ret->sessions == NULL) goto err;
1588 ret->cert_store=X509_STORE_new();
1589 if (ret->cert_store == NULL) goto err;
1590
1591 ssl_create_cipher_list(ret->method,
1592 &ret->cipher_list,&ret->cipher_list_by_id,
1593 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
1594 if (ret->cipher_list == NULL
1595 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1596 {
1597 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1598 goto err2;
1599 }
1600
1601 ret->param = X509_VERIFY_PARAM_new();
1602 if (!ret->param)
1603 goto err;
1604
1605 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1606 {
1607 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1608 goto err2;
1609 }
1610 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1611 {
1612 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1613 goto err2;
1614 }
1615 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1616 {
1617 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1618 goto err2;
1619 }
1620
1621 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1622 goto err;
1623
1624 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1625
1626 ret->extra_certs=NULL;
1627 ret->comp_methods=SSL_COMP_get_compression_methods();
1628
1629 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1630
1631#ifndef OPENSSL_NO_TLSEXT
1632 ret->tlsext_servername_callback = 0;
1633 ret->tlsext_servername_arg = NULL;
1634 /* Setup RFC4507 ticket keys */
1635 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1636 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1637 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1638 ret->options |= SSL_OP_NO_TICKET;
1639
1640 ret->tlsext_status_cb = 0;
1641 ret->tlsext_status_arg = NULL;
1642
1643#endif
1644#ifndef OPENSSL_NO_PSK
1645 ret->psk_identity_hint=NULL;
1646 ret->psk_client_callback=NULL;
1647 ret->psk_server_callback=NULL;
1648#endif
1649#ifndef OPENSSL_NO_BUF_FREELISTS
1650 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT;
1651 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1652 if (!ret->rbuf_freelist)
1653 goto err;
1654 ret->rbuf_freelist->chunklen = 0;
1655 ret->rbuf_freelist->len = 0;
1656 ret->rbuf_freelist->head = NULL;
1657 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1658 if (!ret->wbuf_freelist)
1659 {
1660 OPENSSL_free(ret->rbuf_freelist);
1661 goto err;
1662 }
1663 ret->wbuf_freelist->chunklen = 0;
1664 ret->wbuf_freelist->len = 0;
1665 ret->wbuf_freelist->head = NULL;
1666#endif
1667#ifndef OPENSSL_NO_ENGINE
1668 ret->client_cert_engine = NULL;
1669#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
1670#define eng_strx(x) #x
1671#define eng_str(x) eng_strx(x)
1672 /* Use specific client engine automatically... ignore errors */
1673 {
1674 ENGINE *eng;
1675 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1676 if (!eng)
1677 {
1678 ERR_clear_error();
1679 ENGINE_load_builtin_engines();
1680 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1681 }
1682 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
1683 ERR_clear_error();
1684 }
1685#endif
1686#endif
1687 /* Default is to connect to non-RI servers. When RI is more widely
1688 * deployed might change this.
1689 */
1690 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
1691
1692 return(ret);
1693err:
1694 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1695err2:
1696 if (ret != NULL) SSL_CTX_free(ret);
1697 return(NULL);
1698 }
1699
1700#if 0
1701static void SSL_COMP_free(SSL_COMP *comp)
1702 { OPENSSL_free(comp); }
1703#endif
1704
1705#ifndef OPENSSL_NO_BUF_FREELISTS
1706static void
1707ssl_buf_freelist_free(SSL3_BUF_FREELIST *list)
1708 {
1709 SSL3_BUF_FREELIST_ENTRY *ent, *next;
1710 for (ent = list->head; ent; ent = next)
1711 {
1712 next = ent->next;
1713 OPENSSL_free(ent);
1714 }
1715 OPENSSL_free(list);
1716 }
1717#endif
1718
1719void SSL_CTX_free(SSL_CTX *a)
1720 {
1721 int i;
1722
1723 if (a == NULL) return;
1724
1725 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1726#ifdef REF_PRINT
1727 REF_PRINT("SSL_CTX",a);
1728#endif
1729 if (i > 0) return;
1730#ifdef REF_CHECK
1731 if (i < 0)
1732 {
1733 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1734 abort(); /* ok */
1735 }
1736#endif
1737
1738 if (a->param)
1739 X509_VERIFY_PARAM_free(a->param);
1740
1741 /*
1742 * Free internal session cache. However: the remove_cb() may reference
1743 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1744 * after the sessions were flushed.
1745 * As the ex_data handling routines might also touch the session cache,
1746 * the most secure solution seems to be: empty (flush) the cache, then
1747 * free ex_data, then finally free the cache.
1748 * (See ticket [openssl.org #212].)
1749 */
1750 if (a->sessions != NULL)
1751 SSL_CTX_flush_sessions(a,0);
1752
1753 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1754
1755 if (a->sessions != NULL)
1756 lh_SSL_SESSION_free(a->sessions);
1757
1758 if (a->cert_store != NULL)
1759 X509_STORE_free(a->cert_store);
1760 if (a->cipher_list != NULL)
1761 sk_SSL_CIPHER_free(a->cipher_list);
1762 if (a->cipher_list_by_id != NULL)
1763 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1764 if (a->cert != NULL)
1765 ssl_cert_free(a->cert);
1766 if (a->client_CA != NULL)
1767 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1768 if (a->extra_certs != NULL)
1769 sk_X509_pop_free(a->extra_certs,X509_free);
1770#if 0 /* This should never be done, since it removes a global database */
1771 if (a->comp_methods != NULL)
1772 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1773#else
1774 a->comp_methods = NULL;
1775#endif
1776
1777#ifndef OPENSSL_NO_PSK
1778 if (a->psk_identity_hint)
1779 OPENSSL_free(a->psk_identity_hint);
1780#endif
1781#ifndef OPENSSL_NO_ENGINE
1782 if (a->client_cert_engine)
1783 ENGINE_finish(a->client_cert_engine);
1784#endif
1785
1786#ifndef OPENSSL_NO_BUF_FREELISTS
1787 if (a->wbuf_freelist)
1788 ssl_buf_freelist_free(a->wbuf_freelist);
1789 if (a->rbuf_freelist)
1790 ssl_buf_freelist_free(a->rbuf_freelist);
1791#endif
1792
1793 OPENSSL_free(a);
1794 }
1795
1796void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1797 {
1798 ctx->default_passwd_callback=cb;
1799 }
1800
1801void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1802 {
1803 ctx->default_passwd_callback_userdata=u;
1804 }
1805
1806void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
1807 {
1808 ctx->app_verify_callback=cb;
1809 ctx->app_verify_arg=arg;
1810 }
1811
1812void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1813 {
1814 ctx->verify_mode=mode;
1815 ctx->default_verify_callback=cb;
1816 }
1817
1818void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
1819 {
1820 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
1821 }
1822
1823void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
1824 {
1825 CERT_PKEY *cpk;
1826 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1827 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1828 int rsa_tmp_export,dh_tmp_export,kl;
1829 unsigned long mask_k,mask_a,emask_k,emask_a;
1830 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size;
1831#ifndef OPENSSL_NO_ECDH
1832 int have_ecdh_tmp;
1833#endif
1834 X509 *x = NULL;
1835 EVP_PKEY *ecc_pkey = NULL;
1836 int signature_nid = 0, pk_nid = 0, md_nid = 0;
1837
1838 if (c == NULL) return;
1839
1840 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1841
1842#ifndef OPENSSL_NO_RSA
1843 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
1844 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
1845 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
1846#else
1847 rsa_tmp=rsa_tmp_export=0;
1848#endif
1849#ifndef OPENSSL_NO_DH
1850 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
1851 dh_tmp_export=(c->dh_tmp_cb != NULL ||
1852 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
1853#else
1854 dh_tmp=dh_tmp_export=0;
1855#endif
1856
1857#ifndef OPENSSL_NO_ECDH
1858 have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL);
1859#endif
1860 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1861 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
1862 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1863 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1864 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1865 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1866 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1867 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1868 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1869 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1870 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1871/* FIX THIS EAY EAY EAY */
1872 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1873 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1874 cpk= &(c->pkeys[SSL_PKEY_ECC]);
1875 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL);
1876 mask_k=0;
1877 mask_a=0;
1878 emask_k=0;
1879 emask_a=0;
1880
1881
1882
1883#ifdef CIPHER_DEBUG
1884 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1885 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp,
1886 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1887#endif
1888
1889 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
1890 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
1891 mask_k |= SSL_kGOST;
1892 mask_a |= SSL_aGOST01;
1893 }
1894 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
1895 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
1896 mask_k |= SSL_kGOST;
1897 mask_a |= SSL_aGOST94;
1898 }
1899
1900 if (rsa_enc || (rsa_tmp && rsa_sign))
1901 mask_k|=SSL_kRSA;
1902 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
1903 emask_k|=SSL_kRSA;
1904
1905#if 0
1906 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1907 if ( (dh_tmp || dh_rsa || dh_dsa) &&
1908 (rsa_enc || rsa_sign || dsa_sign))
1909 mask_k|=SSL_kEDH;
1910 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1911 (rsa_enc || rsa_sign || dsa_sign))
1912 emask_k|=SSL_kEDH;
1913#endif
1914
1915 if (dh_tmp_export)
1916 emask_k|=SSL_kEDH;
1917
1918 if (dh_tmp)
1919 mask_k|=SSL_kEDH;
1920
1921 if (dh_rsa) mask_k|=SSL_kDHr;
1922 if (dh_rsa_export) emask_k|=SSL_kDHr;
1923
1924 if (dh_dsa) mask_k|=SSL_kDHd;
1925 if (dh_dsa_export) emask_k|=SSL_kDHd;
1926
1927 if (rsa_enc || rsa_sign)
1928 {
1929 mask_a|=SSL_aRSA;
1930 emask_a|=SSL_aRSA;
1931 }
1932
1933 if (dsa_sign)
1934 {
1935 mask_a|=SSL_aDSS;
1936 emask_a|=SSL_aDSS;
1937 }
1938
1939 mask_a|=SSL_aNULL;
1940 emask_a|=SSL_aNULL;
1941
1942#ifndef OPENSSL_NO_KRB5
1943 mask_k|=SSL_kKRB5;
1944 mask_a|=SSL_aKRB5;
1945 emask_k|=SSL_kKRB5;
1946 emask_a|=SSL_aKRB5;
1947#endif
1948
1949 /* An ECC certificate may be usable for ECDH and/or
1950 * ECDSA cipher suites depending on the key usage extension.
1951 */
1952 if (have_ecc_cert)
1953 {
1954 /* This call populates extension flags (ex_flags) */
1955 x = (c->pkeys[SSL_PKEY_ECC]).x509;
1956 X509_check_purpose(x, -1, 0);
1957 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1958 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
1959 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1960 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
1961 ecc_pkey = X509_get_pubkey(x);
1962 ecc_pkey_size = (ecc_pkey != NULL) ?
1963 EVP_PKEY_bits(ecc_pkey) : 0;
1964 EVP_PKEY_free(ecc_pkey);
1965 if ((x->sig_alg) && (x->sig_alg->algorithm))
1966 {
1967 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
1968 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
1969 }
1970#ifndef OPENSSL_NO_ECDH
1971 if (ecdh_ok)
1972 {
1973
1974 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa)
1975 {
1976 mask_k|=SSL_kECDHr;
1977 mask_a|=SSL_aECDH;
1978 if (ecc_pkey_size <= 163)
1979 {
1980 emask_k|=SSL_kECDHr;
1981 emask_a|=SSL_aECDH;
1982 }
1983 }
1984
1985 if (pk_nid == NID_X9_62_id_ecPublicKey)
1986 {
1987 mask_k|=SSL_kECDHe;
1988 mask_a|=SSL_aECDH;
1989 if (ecc_pkey_size <= 163)
1990 {
1991 emask_k|=SSL_kECDHe;
1992 emask_a|=SSL_aECDH;
1993 }
1994 }
1995 }
1996#endif
1997#ifndef OPENSSL_NO_ECDSA
1998 if (ecdsa_ok)
1999 {
2000 mask_a|=SSL_aECDSA;
2001 emask_a|=SSL_aECDSA;
2002 }
2003#endif
2004 }
2005
2006#ifndef OPENSSL_NO_ECDH
2007 if (have_ecdh_tmp)
2008 {
2009 mask_k|=SSL_kEECDH;
2010 emask_k|=SSL_kEECDH;
2011 }
2012#endif
2013
2014#ifndef OPENSSL_NO_PSK
2015 mask_k |= SSL_kPSK;
2016 mask_a |= SSL_aPSK;
2017 emask_k |= SSL_kPSK;
2018 emask_a |= SSL_aPSK;
2019#endif
2020
2021 c->mask_k=mask_k;
2022 c->mask_a=mask_a;
2023 c->export_mask_k=emask_k;
2024 c->export_mask_a=emask_a;
2025 c->valid=1;
2026 }
2027
2028/* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2029#define ku_reject(x, usage) \
2030 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2031
2032#ifndef OPENSSL_NO_EC
2033
2034int ssl_check_srvr_ecc_cert_and_alg(X509 *x, const SSL_CIPHER *cs)
2035 {
2036 unsigned long alg_k, alg_a;
2037 EVP_PKEY *pkey = NULL;
2038 int keysize = 0;
2039 int signature_nid = 0, md_nid = 0, pk_nid = 0;
2040
2041 alg_k = cs->algorithm_mkey;
2042 alg_a = cs->algorithm_auth;
2043
2044 if (SSL_C_IS_EXPORT(cs))
2045 {
2046 /* ECDH key length in export ciphers must be <= 163 bits */
2047 pkey = X509_get_pubkey(x);
2048 if (pkey == NULL) return 0;
2049 keysize = EVP_PKEY_bits(pkey);
2050 EVP_PKEY_free(pkey);
2051 if (keysize > 163) return 0;
2052 }
2053
2054 /* This call populates the ex_flags field correctly */
2055 X509_check_purpose(x, -1, 0);
2056 if ((x->sig_alg) && (x->sig_alg->algorithm))
2057 {
2058 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2059 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2060 }
2061 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr)
2062 {
2063 /* key usage, if present, must allow key agreement */
2064 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT))
2065 {
2066 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2067 return 0;
2068 }
2069 if (alg_k & SSL_kECDHe)
2070 {
2071 /* signature alg must be ECDSA */
2072 if (pk_nid != NID_X9_62_id_ecPublicKey)
2073 {
2074 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2075 return 0;
2076 }
2077 }
2078 if (alg_k & SSL_kECDHr)
2079 {
2080 /* signature alg must be RSA */
2081
2082 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa)
2083 {
2084 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2085 return 0;
2086 }
2087 }
2088 }
2089 if (alg_a & SSL_aECDSA)
2090 {
2091 /* key usage, if present, must allow signing */
2092 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE))
2093 {
2094 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2095 return 0;
2096 }
2097 }
2098
2099 return 1; /* all checks are ok */
2100 }
2101
2102#endif
2103
2104/* THIS NEEDS CLEANING UP */
2105X509 *ssl_get_server_send_cert(SSL *s)
2106 {
2107 unsigned long alg_k,alg_a;
2108 CERT *c;
2109 int i;
2110
2111 c=s->cert;
2112 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2113
2114 alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
2115 alg_a = s->s3->tmp.new_cipher->algorithm_auth;
2116
2117 if (alg_k & (SSL_kECDHr|SSL_kECDHe))
2118 {
2119 /* we don't need to look at SSL_kEECDH
2120 * since no certificate is needed for
2121 * anon ECDH and for authenticated
2122 * EECDH, the check for the auth
2123 * algorithm will set i correctly
2124 * NOTE: For ECDH-RSA, we need an ECC
2125 * not an RSA cert but for EECDH-RSA
2126 * we need an RSA cert. Placing the
2127 * checks for SSL_kECDH before RSA
2128 * checks ensures the correct cert is chosen.
2129 */
2130 i=SSL_PKEY_ECC;
2131 }
2132 else if (alg_a & SSL_aECDSA)
2133 {
2134 i=SSL_PKEY_ECC;
2135 }
2136 else if (alg_k & SSL_kDHr)
2137 i=SSL_PKEY_DH_RSA;
2138 else if (alg_k & SSL_kDHd)
2139 i=SSL_PKEY_DH_DSA;
2140 else if (alg_a & SSL_aDSS)
2141 i=SSL_PKEY_DSA_SIGN;
2142 else if (alg_a & SSL_aRSA)
2143 {
2144 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
2145 i=SSL_PKEY_RSA_SIGN;
2146 else
2147 i=SSL_PKEY_RSA_ENC;
2148 }
2149 else if (alg_a & SSL_aKRB5)
2150 {
2151 /* VRS something else here? */
2152 return(NULL);
2153 }
2154 else if (alg_a & SSL_aGOST94)
2155 i=SSL_PKEY_GOST94;
2156 else if (alg_a & SSL_aGOST01)
2157 i=SSL_PKEY_GOST01;
2158 else /* if (alg_a & SSL_aNULL) */
2159 {
2160 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR);
2161 return(NULL);
2162 }
2163 if (c->pkeys[i].x509 == NULL) return(NULL);
2164
2165 return(c->pkeys[i].x509);
2166 }
2167
2168EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher)
2169 {
2170 unsigned long alg_a;
2171 CERT *c;
2172
2173 alg_a = cipher->algorithm_auth;
2174 c=s->cert;
2175
2176 if ((alg_a & SSL_aDSS) &&
2177 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2178 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
2179 else if (alg_a & SSL_aRSA)
2180 {
2181 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2182 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
2183 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2184 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
2185 else
2186 return(NULL);
2187 }
2188 else if ((alg_a & SSL_aECDSA) &&
2189 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2190 return(c->pkeys[SSL_PKEY_ECC].privatekey);
2191 else /* if (alg_a & SSL_aNULL) */
2192 {
2193 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
2194 return(NULL);
2195 }
2196 }
2197
2198void ssl_update_cache(SSL *s,int mode)
2199 {
2200 int i;
2201
2202 /* If the session_id_length is 0, we are not supposed to cache it,
2203 * and it would be rather hard to do anyway :-) */
2204 if (s->session->session_id_length == 0) return;
2205
2206 i=s->session_ctx->session_cache_mode;
2207 if ((i & mode) && (!s->hit)
2208 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2209 || SSL_CTX_add_session(s->session_ctx,s->session))
2210 && (s->session_ctx->new_session_cb != NULL))
2211 {
2212 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
2213 if (!s->session_ctx->new_session_cb(s,s->session))
2214 SSL_SESSION_free(s->session);
2215 }
2216
2217 /* auto flush every 255 connections */
2218 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
2219 ((i & mode) == mode))
2220 {
2221 if ( (((mode & SSL_SESS_CACHE_CLIENT)
2222 ?s->session_ctx->stats.sess_connect_good
2223 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff)
2224 {
2225 SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL));
2226 }
2227 }
2228 }
2229
2230const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2231 {
2232 return(s->method);
2233 }
2234
2235int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2236 {
2237 int conn= -1;
2238 int ret=1;
2239
2240 if (s->method != meth)
2241 {
2242 if (s->handshake_func != NULL)
2243 conn=(s->handshake_func == s->method->ssl_connect);
2244
2245 if (s->method->version == meth->version)
2246 s->method=meth;
2247 else
2248 {
2249 s->method->ssl_free(s);
2250 s->method=meth;
2251 ret=s->method->ssl_new(s);
2252 }
2253
2254 if (conn == 1)
2255 s->handshake_func=meth->ssl_connect;
2256 else if (conn == 0)
2257 s->handshake_func=meth->ssl_accept;
2258 }
2259 return(ret);
2260 }
2261
2262int SSL_get_error(const SSL *s,int i)
2263 {
2264 int reason;
2265 unsigned long l;
2266 BIO *bio;
2267
2268 if (i > 0) return(SSL_ERROR_NONE);
2269
2270 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
2271 * etc, where we do encode the error */
2272 if ((l=ERR_peek_error()) != 0)
2273 {
2274 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2275 return(SSL_ERROR_SYSCALL);
2276 else
2277 return(SSL_ERROR_SSL);
2278 }
2279
2280 if ((i < 0) && SSL_want_read(s))
2281 {
2282 bio=SSL_get_rbio(s);
2283 if (BIO_should_read(bio))
2284 return(SSL_ERROR_WANT_READ);
2285 else if (BIO_should_write(bio))
2286 /* This one doesn't make too much sense ... We never try
2287 * to write to the rbio, and an application program where
2288 * rbio and wbio are separate couldn't even know what it
2289 * should wait for.
2290 * However if we ever set s->rwstate incorrectly
2291 * (so that we have SSL_want_read(s) instead of
2292 * SSL_want_write(s)) and rbio and wbio *are* the same,
2293 * this test works around that bug; so it might be safer
2294 * to keep it. */
2295 return(SSL_ERROR_WANT_WRITE);
2296 else if (BIO_should_io_special(bio))
2297 {
2298 reason=BIO_get_retry_reason(bio);
2299 if (reason == BIO_RR_CONNECT)
2300 return(SSL_ERROR_WANT_CONNECT);
2301 else if (reason == BIO_RR_ACCEPT)
2302 return(SSL_ERROR_WANT_ACCEPT);
2303 else
2304 return(SSL_ERROR_SYSCALL); /* unknown */
2305 }
2306 }
2307
2308 if ((i < 0) && SSL_want_write(s))
2309 {
2310 bio=SSL_get_wbio(s);
2311 if (BIO_should_write(bio))
2312 return(SSL_ERROR_WANT_WRITE);
2313 else if (BIO_should_read(bio))
2314 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
2315 return(SSL_ERROR_WANT_READ);
2316 else if (BIO_should_io_special(bio))
2317 {
2318 reason=BIO_get_retry_reason(bio);
2319 if (reason == BIO_RR_CONNECT)
2320 return(SSL_ERROR_WANT_CONNECT);
2321 else if (reason == BIO_RR_ACCEPT)
2322 return(SSL_ERROR_WANT_ACCEPT);
2323 else
2324 return(SSL_ERROR_SYSCALL);
2325 }
2326 }
2327 if ((i < 0) && SSL_want_x509_lookup(s))
2328 {
2329 return(SSL_ERROR_WANT_X509_LOOKUP);
2330 }
2331
2332 if (i == 0)
2333 {
2334 if (s->version == SSL2_VERSION)
2335 {
2336 /* assume it is the socket being closed */
2337 return(SSL_ERROR_ZERO_RETURN);
2338 }
2339 else
2340 {
2341 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2342 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2343 return(SSL_ERROR_ZERO_RETURN);
2344 }
2345 }
2346 return(SSL_ERROR_SYSCALL);
2347 }
2348
2349int SSL_do_handshake(SSL *s)
2350 {
2351 int ret=1;
2352
2353 if (s->handshake_func == NULL)
2354 {
2355 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
2356 return(-1);
2357 }
2358
2359 s->method->ssl_renegotiate_check(s);
2360
2361 if (SSL_in_init(s) || SSL_in_before(s))
2362 {
2363 ret=s->handshake_func(s);
2364 }
2365 return(ret);
2366 }
2367
2368/* For the next 2 functions, SSL_clear() sets shutdown and so
2369 * one of these calls will reset it */
2370void SSL_set_accept_state(SSL *s)
2371 {
2372 s->server=1;
2373 s->shutdown=0;
2374 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
2375 s->handshake_func=s->method->ssl_accept;
2376 /* clear the current cipher */
2377 ssl_clear_cipher_ctx(s);
2378 ssl_clear_hash_ctx(&s->read_hash);
2379 ssl_clear_hash_ctx(&s->write_hash);
2380 }
2381
2382void SSL_set_connect_state(SSL *s)
2383 {
2384 s->server=0;
2385 s->shutdown=0;
2386 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
2387 s->handshake_func=s->method->ssl_connect;
2388 /* clear the current cipher */
2389 ssl_clear_cipher_ctx(s);
2390 ssl_clear_hash_ctx(&s->read_hash);
2391 ssl_clear_hash_ctx(&s->write_hash);
2392 }
2393
2394int ssl_undefined_function(SSL *s)
2395 {
2396 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2397 return(0);
2398 }
2399
2400int ssl_undefined_void_function(void)
2401 {
2402 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2403 return(0);
2404 }
2405
2406int ssl_undefined_const_function(const SSL *s)
2407 {
2408 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2409 return(0);
2410 }
2411
2412SSL_METHOD *ssl_bad_method(int ver)
2413 {
2414 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2415 return(NULL);
2416 }
2417
2418const char *SSL_get_version(const SSL *s)
2419 {
2420 if (s->version == TLS1_VERSION)
2421 return("TLSv1");
2422 else if (s->version == SSL3_VERSION)
2423 return("SSLv3");
2424 else if (s->version == SSL2_VERSION)
2425 return("SSLv2");
2426 else
2427 return("unknown");
2428 }
2429
2430SSL *SSL_dup(SSL *s)
2431 {
2432 STACK_OF(X509_NAME) *sk;
2433 X509_NAME *xn;
2434 SSL *ret;
2435 int i;
2436
2437 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2438 return(NULL);
2439
2440 ret->version = s->version;
2441 ret->type = s->type;
2442 ret->method = s->method;
2443
2444 if (s->session != NULL)
2445 {
2446 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2447 SSL_copy_session_id(ret,s);
2448 }
2449 else
2450 {
2451 /* No session has been established yet, so we have to expect
2452 * that s->cert or ret->cert will be changed later --
2453 * they should not both point to the same object,
2454 * and thus we can't use SSL_copy_session_id. */
2455
2456 ret->method->ssl_free(ret);
2457 ret->method = s->method;
2458 ret->method->ssl_new(ret);
2459
2460 if (s->cert != NULL)
2461 {
2462 if (ret->cert != NULL)
2463 {
2464 ssl_cert_free(ret->cert);
2465 }
2466 ret->cert = ssl_cert_dup(s->cert);
2467 if (ret->cert == NULL)
2468 goto err;
2469 }
2470
2471 SSL_set_session_id_context(ret,
2472 s->sid_ctx, s->sid_ctx_length);
2473 }
2474
2475 ret->options=s->options;
2476 ret->mode=s->mode;
2477 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
2478 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
2479 ret->msg_callback = s->msg_callback;
2480 ret->msg_callback_arg = s->msg_callback_arg;
2481 SSL_set_verify(ret,SSL_get_verify_mode(s),
2482 SSL_get_verify_callback(s));
2483 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
2484 ret->generate_session_id = s->generate_session_id;
2485
2486 SSL_set_info_callback(ret,SSL_get_info_callback(s));
2487
2488 ret->debug=s->debug;
2489
2490 /* copy app data, a little dangerous perhaps */
2491 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2492 goto err;
2493
2494 /* setup rbio, and wbio */
2495 if (s->rbio != NULL)
2496 {
2497 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
2498 goto err;
2499 }
2500 if (s->wbio != NULL)
2501 {
2502 if (s->wbio != s->rbio)
2503 {
2504 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
2505 goto err;
2506 }
2507 else
2508 ret->wbio=ret->rbio;
2509 }
2510 ret->rwstate = s->rwstate;
2511 ret->in_handshake = s->in_handshake;
2512 ret->handshake_func = s->handshake_func;
2513 ret->server = s->server;
2514 ret->new_session = s->new_session;
2515 ret->quiet_shutdown = s->quiet_shutdown;
2516 ret->shutdown=s->shutdown;
2517 ret->state=s->state; /* SSL_dup does not really work at any state, though */
2518 ret->rstate=s->rstate;
2519 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
2520 ret->hit=s->hit;
2521
2522 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2523
2524 /* dup the cipher_list and cipher_list_by_id stacks */
2525 if (s->cipher_list != NULL)
2526 {
2527 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2528 goto err;
2529 }
2530 if (s->cipher_list_by_id != NULL)
2531 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2532 == NULL)
2533 goto err;
2534
2535 /* Dup the client_CA list */
2536 if (s->client_CA != NULL)
2537 {
2538 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
2539 ret->client_CA=sk;
2540 for (i=0; i<sk_X509_NAME_num(sk); i++)
2541 {
2542 xn=sk_X509_NAME_value(sk,i);
2543 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
2544 {
2545 X509_NAME_free(xn);
2546 goto err;
2547 }
2548 }
2549 }
2550
2551 if (0)
2552 {
2553err:
2554 if (ret != NULL) SSL_free(ret);
2555 ret=NULL;
2556 }
2557 return(ret);
2558 }
2559
2560void ssl_clear_cipher_ctx(SSL *s)
2561 {
2562 if (s->enc_read_ctx != NULL)
2563 {
2564 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2565 OPENSSL_free(s->enc_read_ctx);
2566 s->enc_read_ctx=NULL;
2567 }
2568 if (s->enc_write_ctx != NULL)
2569 {
2570 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2571 OPENSSL_free(s->enc_write_ctx);
2572 s->enc_write_ctx=NULL;
2573 }
2574#ifndef OPENSSL_NO_COMP
2575 if (s->expand != NULL)
2576 {
2577 COMP_CTX_free(s->expand);
2578 s->expand=NULL;
2579 }
2580 if (s->compress != NULL)
2581 {
2582 COMP_CTX_free(s->compress);
2583 s->compress=NULL;
2584 }
2585#endif
2586 }
2587
2588/* Fix this function so that it takes an optional type parameter */
2589X509 *SSL_get_certificate(const SSL *s)
2590 {
2591 if (s->cert != NULL)
2592 return(s->cert->key->x509);
2593 else
2594 return(NULL);
2595 }
2596
2597/* Fix this function so that it takes an optional type parameter */
2598EVP_PKEY *SSL_get_privatekey(SSL *s)
2599 {
2600 if (s->cert != NULL)
2601 return(s->cert->key->privatekey);
2602 else
2603 return(NULL);
2604 }
2605
2606const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2607 {
2608 if ((s->session != NULL) && (s->session->cipher != NULL))
2609 return(s->session->cipher);
2610 return(NULL);
2611 }
2612#ifdef OPENSSL_NO_COMP
2613const void *SSL_get_current_compression(SSL *s)
2614 {
2615 return NULL;
2616 }
2617const void *SSL_get_current_expansion(SSL *s)
2618 {
2619 return NULL;
2620 }
2621#else
2622
2623const COMP_METHOD *SSL_get_current_compression(SSL *s)
2624 {
2625 if (s->compress != NULL)
2626 return(s->compress->meth);
2627 return(NULL);
2628 }
2629
2630const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2631 {
2632 if (s->expand != NULL)
2633 return(s->expand->meth);
2634 return(NULL);
2635 }
2636#endif
2637
2638int ssl_init_wbio_buffer(SSL *s,int push)
2639 {
2640 BIO *bbio;
2641
2642 if (s->bbio == NULL)
2643 {
2644 bbio=BIO_new(BIO_f_buffer());
2645 if (bbio == NULL) return(0);
2646 s->bbio=bbio;
2647 }
2648 else
2649 {
2650 bbio=s->bbio;
2651 if (s->bbio == s->wbio)
2652 s->wbio=BIO_pop(s->wbio);
2653 }
2654 (void)BIO_reset(bbio);
2655/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2656 if (!BIO_set_read_buffer_size(bbio,1))
2657 {
2658 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
2659 return(0);
2660 }
2661 if (push)
2662 {
2663 if (s->wbio != bbio)
2664 s->wbio=BIO_push(bbio,s->wbio);
2665 }
2666 else
2667 {
2668 if (s->wbio == bbio)
2669 s->wbio=BIO_pop(bbio);
2670 }
2671 return(1);
2672 }
2673
2674void ssl_free_wbio_buffer(SSL *s)
2675 {
2676 if (s->bbio == NULL) return;
2677
2678 if (s->bbio == s->wbio)
2679 {
2680 /* remove buffering */
2681 s->wbio=BIO_pop(s->wbio);
2682#ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
2683 assert(s->wbio != NULL);
2684#endif
2685 }
2686 BIO_free(s->bbio);
2687 s->bbio=NULL;
2688 }
2689
2690void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
2691 {
2692 ctx->quiet_shutdown=mode;
2693 }
2694
2695int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2696 {
2697 return(ctx->quiet_shutdown);
2698 }
2699
2700void SSL_set_quiet_shutdown(SSL *s,int mode)
2701 {
2702 s->quiet_shutdown=mode;
2703 }
2704
2705int SSL_get_quiet_shutdown(const SSL *s)
2706 {
2707 return(s->quiet_shutdown);
2708 }
2709
2710void SSL_set_shutdown(SSL *s,int mode)
2711 {
2712 s->shutdown=mode;
2713 }
2714
2715int SSL_get_shutdown(const SSL *s)
2716 {
2717 return(s->shutdown);
2718 }
2719
2720int SSL_version(const SSL *s)
2721 {
2722 return(s->version);
2723 }
2724
2725SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2726 {
2727 return(ssl->ctx);
2728 }
2729
2730SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx)
2731 {
2732 if (ssl->ctx == ctx)
2733 return ssl->ctx;
2734#ifndef OPENSSL_NO_TLSEXT
2735 if (ctx == NULL)
2736 ctx = ssl->initial_ctx;
2737#endif
2738 if (ssl->cert != NULL)
2739 ssl_cert_free(ssl->cert);
2740 ssl->cert = ssl_cert_dup(ctx->cert);
2741 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
2742 if (ssl->ctx != NULL)
2743 SSL_CTX_free(ssl->ctx); /* decrement reference count */
2744 ssl->ctx = ctx;
2745 return(ssl->ctx);
2746 }
2747
2748#ifndef OPENSSL_NO_STDIO
2749int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2750 {
2751 return(X509_STORE_set_default_paths(ctx->cert_store));
2752 }
2753
2754int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2755 const char *CApath)
2756 {
2757 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2758 }
2759#endif
2760
2761void SSL_set_info_callback(SSL *ssl,
2762 void (*cb)(const SSL *ssl,int type,int val))
2763 {
2764 ssl->info_callback=cb;
2765 }
2766
2767/* One compiler (Diab DCC) doesn't like argument names in returned
2768 function pointer. */
2769void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/)
2770 {
2771 return ssl->info_callback;
2772 }
2773
2774int SSL_state(const SSL *ssl)
2775 {
2776 return(ssl->state);
2777 }
2778
2779void SSL_set_verify_result(SSL *ssl,long arg)
2780 {
2781 ssl->verify_result=arg;
2782 }
2783
2784long SSL_get_verify_result(const SSL *ssl)
2785 {
2786 return(ssl->verify_result);
2787 }
2788
2789int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2790 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2791 {
2792 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
2793 new_func, dup_func, free_func);
2794 }
2795
2796int SSL_set_ex_data(SSL *s,int idx,void *arg)
2797 {
2798 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2799 }
2800
2801void *SSL_get_ex_data(const SSL *s,int idx)
2802 {
2803 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2804 }
2805
2806int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2807 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2808 {
2809 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
2810 new_func, dup_func, free_func);
2811 }
2812
2813int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
2814 {
2815 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2816 }
2817
2818void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx)
2819 {
2820 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2821 }
2822
2823int ssl_ok(SSL *s)
2824 {
2825 return(1);
2826 }
2827
2828X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
2829 {
2830 return(ctx->cert_store);
2831 }
2832
2833void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
2834 {
2835 if (ctx->cert_store != NULL)
2836 X509_STORE_free(ctx->cert_store);
2837 ctx->cert_store=store;
2838 }
2839
2840int SSL_want(const SSL *s)
2841 {
2842 return(s->rwstate);
2843 }
2844
2845/*!
2846 * \brief Set the callback for generating temporary RSA keys.
2847 * \param ctx the SSL context.
2848 * \param cb the callback
2849 */
2850
2851#ifndef OPENSSL_NO_RSA
2852void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
2853 int is_export,
2854 int keylength))
2855 {
2856 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
2857 }
2858
2859void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
2860 int is_export,
2861 int keylength))
2862 {
2863 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
2864 }
2865#endif
2866
2867#ifdef DOXYGEN
2868/*!
2869 * \brief The RSA temporary key callback function.
2870 * \param ssl the SSL session.
2871 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
2872 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
2873 * of the required key in bits.
2874 * \return the temporary RSA key.
2875 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
2876 */
2877
2878RSA *cb(SSL *ssl,int is_export,int keylength)
2879 {}
2880#endif
2881
2882/*!
2883 * \brief Set the callback for generating temporary DH keys.
2884 * \param ctx the SSL context.
2885 * \param dh the callback
2886 */
2887
2888#ifndef OPENSSL_NO_DH
2889void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
2890 int keylength))
2891 {
2892 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
2893 }
2894
2895void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
2896 int keylength))
2897 {
2898 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
2899 }
2900#endif
2901
2902#ifndef OPENSSL_NO_ECDH
2903void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2904 int keylength))
2905 {
2906 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
2907 }
2908
2909void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2910 int keylength))
2911 {
2912 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
2913 }
2914#endif
2915
2916#ifndef OPENSSL_NO_PSK
2917int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
2918 {
2919 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
2920 {
2921 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
2922 return 0;
2923 }
2924 if (ctx->psk_identity_hint != NULL)
2925 OPENSSL_free(ctx->psk_identity_hint);
2926 if (identity_hint != NULL)
2927 {
2928 ctx->psk_identity_hint = BUF_strdup(identity_hint);
2929 if (ctx->psk_identity_hint == NULL)
2930 return 0;
2931 }
2932 else
2933 ctx->psk_identity_hint = NULL;
2934 return 1;
2935 }
2936
2937int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
2938 {
2939 if (s == NULL)
2940 return 0;
2941
2942 if (s->session == NULL)
2943 return 1; /* session not created yet, ignored */
2944
2945 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
2946 {
2947 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
2948 return 0;
2949 }
2950 if (s->session->psk_identity_hint != NULL)
2951 OPENSSL_free(s->session->psk_identity_hint);
2952 if (identity_hint != NULL)
2953 {
2954 s->session->psk_identity_hint = BUF_strdup(identity_hint);
2955 if (s->session->psk_identity_hint == NULL)
2956 return 0;
2957 }
2958 else
2959 s->session->psk_identity_hint = NULL;
2960 return 1;
2961 }
2962
2963const char *SSL_get_psk_identity_hint(const SSL *s)
2964 {
2965 if (s == NULL || s->session == NULL)
2966 return NULL;
2967 return(s->session->psk_identity_hint);
2968 }
2969
2970const char *SSL_get_psk_identity(const SSL *s)
2971 {
2972 if (s == NULL || s->session == NULL)
2973 return NULL;
2974 return(s->session->psk_identity);
2975 }
2976
2977void SSL_set_psk_client_callback(SSL *s,
2978 unsigned int (*cb)(SSL *ssl, const char *hint,
2979 char *identity, unsigned int max_identity_len, unsigned char *psk,
2980 unsigned int max_psk_len))
2981 {
2982 s->psk_client_callback = cb;
2983 }
2984
2985void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
2986 unsigned int (*cb)(SSL *ssl, const char *hint,
2987 char *identity, unsigned int max_identity_len, unsigned char *psk,
2988 unsigned int max_psk_len))
2989 {
2990 ctx->psk_client_callback = cb;
2991 }
2992
2993void SSL_set_psk_server_callback(SSL *s,
2994 unsigned int (*cb)(SSL *ssl, const char *identity,
2995 unsigned char *psk, unsigned int max_psk_len))
2996 {
2997 s->psk_server_callback = cb;
2998 }
2999
3000void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3001 unsigned int (*cb)(SSL *ssl, const char *identity,
3002 unsigned char *psk, unsigned int max_psk_len))
3003 {
3004 ctx->psk_server_callback = cb;
3005 }
3006#endif
3007
3008void 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))
3009 {
3010 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3011 }
3012void 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))
3013 {
3014 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3015 }
3016
3017/* Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3018 * vairable, freeing EVP_MD_CTX previously stored in that variable, if
3019 * any. If EVP_MD pointer is passed, initializes ctx with this md
3020 * Returns newly allocated ctx;
3021 */
3022
3023EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md)
3024{
3025 ssl_clear_hash_ctx(hash);
3026 *hash = EVP_MD_CTX_create();
3027 if (md) EVP_DigestInit_ex(*hash,md,NULL);
3028 return *hash;
3029}
3030void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3031{
3032
3033 if (*hash) EVP_MD_CTX_destroy(*hash);
3034 *hash=NULL;
3035}
3036
3037#if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
3038#include "../crypto/bio/bss_file.c"
3039#endif
3040
3041IMPLEMENT_STACK_OF(SSL_CIPHER)
3042IMPLEMENT_STACK_OF(SSL_COMP)
3043IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER,
3044 ssl_cipher_id);
3045
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-10-24 07:20:53 +0000