Import of openssl-0.9.8, a feature release.
[dragonfly.git] / crypto / openssl-0.9 / ssl / ssl_lib.c
CommitLineData
56276539
SS
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) 1998-2001 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#ifdef REF_CHECK
120# include <assert.h>
121#endif
122#include <stdio.h>
123#include "ssl_locl.h"
124#include "kssl_lcl.h"
125#include <openssl/objects.h>
126#include <openssl/lhash.h>
127#include <openssl/x509v3.h>
128#include <openssl/dh.h>
129
130const char *SSL_version_str=OPENSSL_VERSION_TEXT;
131
132SSL3_ENC_METHOD ssl3_undef_enc_method={
133 /* evil casts, but these functions are only called if there's a library bug */
134 (int (*)(SSL *,int))ssl_undefined_function,
135 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
136 ssl_undefined_function,
137 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
138 (int (*)(SSL*, int))ssl_undefined_function,
139 (int (*)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char*, int, unsigned char *))ssl_undefined_function
140 };
141
142int SSL_clear(SSL *s)
143 {
144
145 if (s->method == NULL)
146 {
147 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
148 return(0);
149 }
150
151 if (ssl_clear_bad_session(s))
152 {
153 SSL_SESSION_free(s->session);
154 s->session=NULL;
155 }
156
157 s->error=0;
158 s->hit=0;
159 s->shutdown=0;
160
161#if 0 /* Disabled since version 1.10 of this file (early return not
162 * needed because SSL_clear is not called when doing renegotiation) */
163 /* This is set if we are doing dynamic renegotiation so keep
164 * the old cipher. It is sort of a SSL_clear_lite :-) */
165 if (s->new_session) return(1);
166#else
167 if (s->new_session)
168 {
169 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR);
170 return 0;
171 }
172#endif
173
174 s->type=0;
175
176 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
177
178 s->version=s->method->version;
179 s->client_version=s->version;
180 s->rwstate=SSL_NOTHING;
181 s->rstate=SSL_ST_READ_HEADER;
182#if 0
183 s->read_ahead=s->ctx->read_ahead;
184#endif
185
186 if (s->init_buf != NULL)
187 {
188 BUF_MEM_free(s->init_buf);
189 s->init_buf=NULL;
190 }
191
192 ssl_clear_cipher_ctx(s);
193
194 s->first_packet=0;
195
196#if 1
197 /* Check to see if we were changed into a different method, if
198 * so, revert back if we are not doing session-id reuse. */
199 if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method))
200 {
201 s->method->ssl_free(s);
202 s->method=s->ctx->method;
203 if (!s->method->ssl_new(s))
204 return(0);
205 }
206 else
207#endif
208 s->method->ssl_clear(s);
209 return(1);
210 }
211
212/** Used to change an SSL_CTXs default SSL method type */
213int SSL_CTX_set_ssl_version(SSL_CTX *ctx,SSL_METHOD *meth)
214 {
215 STACK_OF(SSL_CIPHER) *sk;
216
217 ctx->method=meth;
218
219 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
220 &(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST);
221 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
222 {
223 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
224 return(0);
225 }
226 return(1);
227 }
228
229SSL *SSL_new(SSL_CTX *ctx)
230 {
231 SSL *s;
232
233 if (ctx == NULL)
234 {
235 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
236 return(NULL);
237 }
238 if (ctx->method == NULL)
239 {
240 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
241 return(NULL);
242 }
243
244 s=(SSL *)OPENSSL_malloc(sizeof(SSL));
245 if (s == NULL) goto err;
246 memset(s,0,sizeof(SSL));
247
248#ifndef OPENSSL_NO_KRB5
249 s->kssl_ctx = kssl_ctx_new();
250#endif /* OPENSSL_NO_KRB5 */
251
252 s->options=ctx->options;
253 s->mode=ctx->mode;
254 s->max_cert_list=ctx->max_cert_list;
255
256 if (ctx->cert != NULL)
257 {
258 /* Earlier library versions used to copy the pointer to
259 * the CERT, not its contents; only when setting new
260 * parameters for the per-SSL copy, ssl_cert_new would be
261 * called (and the direct reference to the per-SSL_CTX
262 * settings would be lost, but those still were indirectly
263 * accessed for various purposes, and for that reason they
264 * used to be known as s->ctx->default_cert).
265 * Now we don't look at the SSL_CTX's CERT after having
266 * duplicated it once. */
267
268 s->cert = ssl_cert_dup(ctx->cert);
269 if (s->cert == NULL)
270 goto err;
271 }
272 else
273 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
274
275 s->read_ahead=ctx->read_ahead;
276 s->msg_callback=ctx->msg_callback;
277 s->msg_callback_arg=ctx->msg_callback_arg;
278 s->verify_mode=ctx->verify_mode;
279#if 0
280 s->verify_depth=ctx->verify_depth;
281#endif
282 s->sid_ctx_length=ctx->sid_ctx_length;
283 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
284 memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
285 s->verify_callback=ctx->default_verify_callback;
286 s->generate_session_id=ctx->generate_session_id;
287
288 s->param = X509_VERIFY_PARAM_new();
289 if (!s->param)
290 goto err;
291 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
292#if 0
293 s->purpose = ctx->purpose;
294 s->trust = ctx->trust;
295#endif
296 s->quiet_shutdown=ctx->quiet_shutdown;
297
298 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
299 s->ctx=ctx;
300
301 s->verify_result=X509_V_OK;
302
303 s->method=ctx->method;
304
305 if (!s->method->ssl_new(s))
306 goto err;
307
308 s->references=1;
309 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
310
311 SSL_clear(s);
312
313 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
314
315 return(s);
316err:
317 if (s != NULL)
318 {
319 if (s->cert != NULL)
320 ssl_cert_free(s->cert);
321 if (s->ctx != NULL)
322 SSL_CTX_free(s->ctx); /* decrement reference count */
323 OPENSSL_free(s);
324 }
325 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
326 return(NULL);
327 }
328
329int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
330 unsigned int sid_ctx_len)
331 {
332 if(sid_ctx_len > sizeof ctx->sid_ctx)
333 {
334 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
335 return 0;
336 }
337 ctx->sid_ctx_length=sid_ctx_len;
338 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
339
340 return 1;
341 }
342
343int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
344 unsigned int sid_ctx_len)
345 {
346 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
347 {
348 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
349 return 0;
350 }
351 ssl->sid_ctx_length=sid_ctx_len;
352 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
353
354 return 1;
355 }
356
357int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
358 {
359 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
360 ctx->generate_session_id = cb;
361 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
362 return 1;
363 }
364
365int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
366 {
367 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
368 ssl->generate_session_id = cb;
369 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
370 return 1;
371 }
372
373int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
374 unsigned int id_len)
375 {
376 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
377 * we can "construct" a session to give us the desired check - ie. to
378 * find if there's a session in the hash table that would conflict with
379 * any new session built out of this id/id_len and the ssl_version in
380 * use by this SSL. */
381 SSL_SESSION r, *p;
382
383 if(id_len > sizeof r.session_id)
384 return 0;
385
386 r.ssl_version = ssl->version;
387 r.session_id_length = id_len;
388 memcpy(r.session_id, id, id_len);
389 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
390 * callback is calling us to check the uniqueness of a shorter ID, it
391 * must be compared as a padded-out ID because that is what it will be
392 * converted to when the callback has finished choosing it. */
393 if((r.ssl_version == SSL2_VERSION) &&
394 (id_len < SSL2_SSL_SESSION_ID_LENGTH))
395 {
396 memset(r.session_id + id_len, 0,
397 SSL2_SSL_SESSION_ID_LENGTH - id_len);
398 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
399 }
400
401 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
402 p = (SSL_SESSION *)lh_retrieve(ssl->ctx->sessions, &r);
403 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
404 return (p != NULL);
405 }
406
407int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
408 {
409 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
410 }
411
412int SSL_set_purpose(SSL *s, int purpose)
413 {
414 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
415 }
416
417int SSL_CTX_set_trust(SSL_CTX *s, int trust)
418 {
419 return X509_VERIFY_PARAM_set_trust(s->param, trust);
420 }
421
422int SSL_set_trust(SSL *s, int trust)
423 {
424 return X509_VERIFY_PARAM_set_trust(s->param, trust);
425 }
426
427void SSL_free(SSL *s)
428 {
429 int i;
430
431 if(s == NULL)
432 return;
433
434 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
435#ifdef REF_PRINT
436 REF_PRINT("SSL",s);
437#endif
438 if (i > 0) return;
439#ifdef REF_CHECK
440 if (i < 0)
441 {
442 fprintf(stderr,"SSL_free, bad reference count\n");
443 abort(); /* ok */
444 }
445#endif
446
447 if (s->param)
448 X509_VERIFY_PARAM_free(s->param);
449
450 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
451
452 if (s->bbio != NULL)
453 {
454 /* If the buffering BIO is in place, pop it off */
455 if (s->bbio == s->wbio)
456 {
457 s->wbio=BIO_pop(s->wbio);
458 }
459 BIO_free(s->bbio);
460 s->bbio=NULL;
461 }
462 if (s->rbio != NULL)
463 BIO_free_all(s->rbio);
464 if ((s->wbio != NULL) && (s->wbio != s->rbio))
465 BIO_free_all(s->wbio);
466
467 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
468
469 /* add extra stuff */
470 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
471 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
472
473 /* Make the next call work :-) */
474 if (s->session != NULL)
475 {
476 ssl_clear_bad_session(s);
477 SSL_SESSION_free(s->session);
478 }
479
480 ssl_clear_cipher_ctx(s);
481
482 if (s->cert != NULL) ssl_cert_free(s->cert);
483 /* Free up if allocated */
484
485 if (s->ctx) SSL_CTX_free(s->ctx);
486
487 if (s->client_CA != NULL)
488 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
489
490 if (s->method != NULL) s->method->ssl_free(s);
491
492#ifndef OPENSSL_NO_KRB5
493 if (s->kssl_ctx != NULL)
494 kssl_ctx_free(s->kssl_ctx);
495#endif /* OPENSSL_NO_KRB5 */
496
497 OPENSSL_free(s);
498 }
499
500void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
501 {
502 /* If the output buffering BIO is still in place, remove it
503 */
504 if (s->bbio != NULL)
505 {
506 if (s->wbio == s->bbio)
507 {
508 s->wbio=s->wbio->next_bio;
509 s->bbio->next_bio=NULL;
510 }
511 }
512 if ((s->rbio != NULL) && (s->rbio != rbio))
513 BIO_free_all(s->rbio);
514 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
515 BIO_free_all(s->wbio);
516 s->rbio=rbio;
517 s->wbio=wbio;
518 }
519
520BIO *SSL_get_rbio(const SSL *s)
521 { return(s->rbio); }
522
523BIO *SSL_get_wbio(const SSL *s)
524 { return(s->wbio); }
525
526int SSL_get_fd(const SSL *s)
527 {
528 return(SSL_get_rfd(s));
529 }
530
531int SSL_get_rfd(const SSL *s)
532 {
533 int ret= -1;
534 BIO *b,*r;
535
536 b=SSL_get_rbio(s);
537 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
538 if (r != NULL)
539 BIO_get_fd(r,&ret);
540 return(ret);
541 }
542
543int SSL_get_wfd(const SSL *s)
544 {
545 int ret= -1;
546 BIO *b,*r;
547
548 b=SSL_get_wbio(s);
549 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
550 if (r != NULL)
551 BIO_get_fd(r,&ret);
552 return(ret);
553 }
554
555#ifndef OPENSSL_NO_SOCK
556int SSL_set_fd(SSL *s,int fd)
557 {
558 int ret=0;
559 BIO *bio=NULL;
560
561 bio=BIO_new(BIO_s_socket());
562
563 if (bio == NULL)
564 {
565 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
566 goto err;
567 }
568 BIO_set_fd(bio,fd,BIO_NOCLOSE);
569 SSL_set_bio(s,bio,bio);
570 ret=1;
571err:
572 return(ret);
573 }
574
575int SSL_set_wfd(SSL *s,int fd)
576 {
577 int ret=0;
578 BIO *bio=NULL;
579
580 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
581 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
582 {
583 bio=BIO_new(BIO_s_socket());
584
585 if (bio == NULL)
586 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
587 BIO_set_fd(bio,fd,BIO_NOCLOSE);
588 SSL_set_bio(s,SSL_get_rbio(s),bio);
589 }
590 else
591 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
592 ret=1;
593err:
594 return(ret);
595 }
596
597int SSL_set_rfd(SSL *s,int fd)
598 {
599 int ret=0;
600 BIO *bio=NULL;
601
602 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
603 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
604 {
605 bio=BIO_new(BIO_s_socket());
606
607 if (bio == NULL)
608 {
609 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
610 goto err;
611 }
612 BIO_set_fd(bio,fd,BIO_NOCLOSE);
613 SSL_set_bio(s,bio,SSL_get_wbio(s));
614 }
615 else
616 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
617 ret=1;
618err:
619 return(ret);
620 }
621#endif
622
623
624/* return length of latest Finished message we sent, copy to 'buf' */
625size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
626 {
627 size_t ret = 0;
628
629 if (s->s3 != NULL)
630 {
631 ret = s->s3->tmp.finish_md_len;
632 if (count > ret)
633 count = ret;
634 memcpy(buf, s->s3->tmp.finish_md, count);
635 }
636 return ret;
637 }
638
639/* return length of latest Finished message we expected, copy to 'buf' */
640size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
641 {
642 size_t ret = 0;
643
644 if (s->s3 != NULL)
645 {
646 ret = s->s3->tmp.peer_finish_md_len;
647 if (count > ret)
648 count = ret;
649 memcpy(buf, s->s3->tmp.peer_finish_md, count);
650 }
651 return ret;
652 }
653
654
655int SSL_get_verify_mode(const SSL *s)
656 {
657 return(s->verify_mode);
658 }
659
660int SSL_get_verify_depth(const SSL *s)
661 {
662 return X509_VERIFY_PARAM_get_depth(s->param);
663 }
664
665int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *)
666 {
667 return(s->verify_callback);
668 }
669
670int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
671 {
672 return(ctx->verify_mode);
673 }
674
675int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
676 {
677 return X509_VERIFY_PARAM_get_depth(ctx->param);
678 }
679
680int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *)
681 {
682 return(ctx->default_verify_callback);
683 }
684
685void SSL_set_verify(SSL *s,int mode,
686 int (*callback)(int ok,X509_STORE_CTX *ctx))
687 {
688 s->verify_mode=mode;
689 if (callback != NULL)
690 s->verify_callback=callback;
691 }
692
693void SSL_set_verify_depth(SSL *s,int depth)
694 {
695 X509_VERIFY_PARAM_set_depth(s->param, depth);
696 }
697
698void SSL_set_read_ahead(SSL *s,int yes)
699 {
700 s->read_ahead=yes;
701 }
702
703int SSL_get_read_ahead(const SSL *s)
704 {
705 return(s->read_ahead);
706 }
707
708int SSL_pending(const SSL *s)
709 {
710 /* SSL_pending cannot work properly if read-ahead is enabled
711 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
712 * and it is impossible to fix since SSL_pending cannot report
713 * errors that may be observed while scanning the new data.
714 * (Note that SSL_pending() is often used as a boolean value,
715 * so we'd better not return -1.)
716 */
717 return(s->method->ssl_pending(s));
718 }
719
720X509 *SSL_get_peer_certificate(const SSL *s)
721 {
722 X509 *r;
723
724 if ((s == NULL) || (s->session == NULL))
725 r=NULL;
726 else
727 r=s->session->peer;
728
729 if (r == NULL) return(r);
730
731 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
732
733 return(r);
734 }
735
736STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
737 {
738 STACK_OF(X509) *r;
739
740 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
741 r=NULL;
742 else
743 r=s->session->sess_cert->cert_chain;
744
745 /* If we are a client, cert_chain includes the peer's own
746 * certificate; if we are a server, it does not. */
747
748 return(r);
749 }
750
751/* Now in theory, since the calling process own 't' it should be safe to
752 * modify. We need to be able to read f without being hassled */
753void SSL_copy_session_id(SSL *t,const SSL *f)
754 {
755 CERT *tmp;
756
757 /* Do we need to to SSL locking? */
758 SSL_set_session(t,SSL_get_session(f));
759
760 /* what if we are setup as SSLv2 but want to talk SSLv3 or
761 * vice-versa */
762 if (t->method != f->method)
763 {
764 t->method->ssl_free(t); /* cleanup current */
765 t->method=f->method; /* change method */
766 t->method->ssl_new(t); /* setup new */
767 }
768
769 tmp=t->cert;
770 if (f->cert != NULL)
771 {
772 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
773 t->cert=f->cert;
774 }
775 else
776 t->cert=NULL;
777 if (tmp != NULL) ssl_cert_free(tmp);
778 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
779 }
780
781/* Fix this so it checks all the valid key/cert options */
782int SSL_CTX_check_private_key(const SSL_CTX *ctx)
783 {
784 if ( (ctx == NULL) ||
785 (ctx->cert == NULL) ||
786 (ctx->cert->key->x509 == NULL))
787 {
788 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
789 return(0);
790 }
791 if (ctx->cert->key->privatekey == NULL)
792 {
793 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
794 return(0);
795 }
796 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
797 }
798
799/* Fix this function so that it takes an optional type parameter */
800int SSL_check_private_key(const SSL *ssl)
801 {
802 if (ssl == NULL)
803 {
804 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
805 return(0);
806 }
807 if (ssl->cert == NULL)
808 {
809 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
810 return 0;
811 }
812 if (ssl->cert->key->x509 == NULL)
813 {
814 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
815 return(0);
816 }
817 if (ssl->cert->key->privatekey == NULL)
818 {
819 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
820 return(0);
821 }
822 return(X509_check_private_key(ssl->cert->key->x509,
823 ssl->cert->key->privatekey));
824 }
825
826int SSL_accept(SSL *s)
827 {
828 if (s->handshake_func == 0)
829 /* Not properly initialized yet */
830 SSL_set_accept_state(s);
831
832 return(s->method->ssl_accept(s));
833 }
834
835int SSL_connect(SSL *s)
836 {
837 if (s->handshake_func == 0)
838 /* Not properly initialized yet */
839 SSL_set_connect_state(s);
840
841 return(s->method->ssl_connect(s));
842 }
843
844long SSL_get_default_timeout(const SSL *s)
845 {
846 return(s->method->get_timeout());
847 }
848
849int SSL_read(SSL *s,void *buf,int num)
850 {
851 if (s->handshake_func == 0)
852 {
853 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
854 return -1;
855 }
856
857 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
858 {
859 s->rwstate=SSL_NOTHING;
860 return(0);
861 }
862 return(s->method->ssl_read(s,buf,num));
863 }
864
865int SSL_peek(SSL *s,void *buf,int num)
866 {
867 if (s->handshake_func == 0)
868 {
869 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
870 return -1;
871 }
872
873 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
874 {
875 return(0);
876 }
877 return(s->method->ssl_peek(s,buf,num));
878 }
879
880int SSL_write(SSL *s,const void *buf,int num)
881 {
882 if (s->handshake_func == 0)
883 {
884 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
885 return -1;
886 }
887
888 if (s->shutdown & SSL_SENT_SHUTDOWN)
889 {
890 s->rwstate=SSL_NOTHING;
891 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
892 return(-1);
893 }
894 return(s->method->ssl_write(s,buf,num));
895 }
896
897int SSL_shutdown(SSL *s)
898 {
899 /* Note that this function behaves differently from what one might
900 * expect. Return values are 0 for no success (yet),
901 * 1 for success; but calling it once is usually not enough,
902 * even if blocking I/O is used (see ssl3_shutdown).
903 */
904
905 if (s->handshake_func == 0)
906 {
907 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
908 return -1;
909 }
910
911 if ((s != NULL) && !SSL_in_init(s))
912 return(s->method->ssl_shutdown(s));
913 else
914 return(1);
915 }
916
917int SSL_renegotiate(SSL *s)
918 {
919 if (s->new_session == 0)
920 {
921 s->new_session=1;
922 }
923 return(s->method->ssl_renegotiate(s));
924 }
925
926int SSL_renegotiate_pending(SSL *s)
927 {
928 /* becomes true when negotiation is requested;
929 * false again once a handshake has finished */
930 return (s->new_session != 0);
931 }
932
933long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
934 {
935 long l;
936
937 switch (cmd)
938 {
939 case SSL_CTRL_GET_READ_AHEAD:
940 return(s->read_ahead);
941 case SSL_CTRL_SET_READ_AHEAD:
942 l=s->read_ahead;
943 s->read_ahead=larg;
944 return(l);
945
946 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
947 s->msg_callback_arg = parg;
948 return 1;
949
950 case SSL_CTRL_OPTIONS:
951 return(s->options|=larg);
952 case SSL_CTRL_MODE:
953 return(s->mode|=larg);
954 case SSL_CTRL_GET_MAX_CERT_LIST:
955 return(s->max_cert_list);
956 case SSL_CTRL_SET_MAX_CERT_LIST:
957 l=s->max_cert_list;
958 s->max_cert_list=larg;
959 return(l);
960 case SSL_CTRL_SET_MTU:
961 if (SSL_version(s) == DTLS1_VERSION)
962 {
963 s->d1->mtu = larg;
964 return larg;
965 }
966 return 0;
967 default:
968 return(s->method->ssl_ctrl(s,cmd,larg,parg));
969 }
970 }
971
972long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
973 {
974 switch(cmd)
975 {
976 case SSL_CTRL_SET_MSG_CALLBACK:
977 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
978 return 1;
979
980 default:
981 return(s->method->ssl_callback_ctrl(s,cmd,fp));
982 }
983 }
984
985struct lhash_st *SSL_CTX_sessions(SSL_CTX *ctx)
986 {
987 return ctx->sessions;
988 }
989
990long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
991 {
992 long l;
993
994 switch (cmd)
995 {
996 case SSL_CTRL_GET_READ_AHEAD:
997 return(ctx->read_ahead);
998 case SSL_CTRL_SET_READ_AHEAD:
999 l=ctx->read_ahead;
1000 ctx->read_ahead=larg;
1001 return(l);
1002
1003 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1004 ctx->msg_callback_arg = parg;
1005 return 1;
1006
1007 case SSL_CTRL_GET_MAX_CERT_LIST:
1008 return(ctx->max_cert_list);
1009 case SSL_CTRL_SET_MAX_CERT_LIST:
1010 l=ctx->max_cert_list;
1011 ctx->max_cert_list=larg;
1012 return(l);
1013
1014 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1015 l=ctx->session_cache_size;
1016 ctx->session_cache_size=larg;
1017 return(l);
1018 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1019 return(ctx->session_cache_size);
1020 case SSL_CTRL_SET_SESS_CACHE_MODE:
1021 l=ctx->session_cache_mode;
1022 ctx->session_cache_mode=larg;
1023 return(l);
1024 case SSL_CTRL_GET_SESS_CACHE_MODE:
1025 return(ctx->session_cache_mode);
1026
1027 case SSL_CTRL_SESS_NUMBER:
1028 return(ctx->sessions->num_items);
1029 case SSL_CTRL_SESS_CONNECT:
1030 return(ctx->stats.sess_connect);
1031 case SSL_CTRL_SESS_CONNECT_GOOD:
1032 return(ctx->stats.sess_connect_good);
1033 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1034 return(ctx->stats.sess_connect_renegotiate);
1035 case SSL_CTRL_SESS_ACCEPT:
1036 return(ctx->stats.sess_accept);
1037 case SSL_CTRL_SESS_ACCEPT_GOOD:
1038 return(ctx->stats.sess_accept_good);
1039 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1040 return(ctx->stats.sess_accept_renegotiate);
1041 case SSL_CTRL_SESS_HIT:
1042 return(ctx->stats.sess_hit);
1043 case SSL_CTRL_SESS_CB_HIT:
1044 return(ctx->stats.sess_cb_hit);
1045 case SSL_CTRL_SESS_MISSES:
1046 return(ctx->stats.sess_miss);
1047 case SSL_CTRL_SESS_TIMEOUTS:
1048 return(ctx->stats.sess_timeout);
1049 case SSL_CTRL_SESS_CACHE_FULL:
1050 return(ctx->stats.sess_cache_full);
1051 case SSL_CTRL_OPTIONS:
1052 return(ctx->options|=larg);
1053 case SSL_CTRL_MODE:
1054 return(ctx->mode|=larg);
1055 default:
1056 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
1057 }
1058 }
1059
1060long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
1061 {
1062 switch(cmd)
1063 {
1064 case SSL_CTRL_SET_MSG_CALLBACK:
1065 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1066 return 1;
1067
1068 default:
1069 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
1070 }
1071 }
1072
1073int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1074 {
1075 long l;
1076
1077 l=a->id-b->id;
1078 if (l == 0L)
1079 return(0);
1080 else
1081 return((l > 0)?1:-1);
1082 }
1083
1084int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1085 const SSL_CIPHER * const *bp)
1086 {
1087 long l;
1088
1089 l=(*ap)->id-(*bp)->id;
1090 if (l == 0L)
1091 return(0);
1092 else
1093 return((l > 0)?1:-1);
1094 }
1095
1096/** return a STACK of the ciphers available for the SSL and in order of
1097 * preference */
1098STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1099 {
1100 if (s != NULL)
1101 {
1102 if (s->cipher_list != NULL)
1103 {
1104 return(s->cipher_list);
1105 }
1106 else if ((s->ctx != NULL) &&
1107 (s->ctx->cipher_list != NULL))
1108 {
1109 return(s->ctx->cipher_list);
1110 }
1111 }
1112 return(NULL);
1113 }
1114
1115/** return a STACK of the ciphers available for the SSL and in order of
1116 * algorithm id */
1117STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1118 {
1119 if (s != NULL)
1120 {
1121 if (s->cipher_list_by_id != NULL)
1122 {
1123 return(s->cipher_list_by_id);
1124 }
1125 else if ((s->ctx != NULL) &&
1126 (s->ctx->cipher_list_by_id != NULL))
1127 {
1128 return(s->ctx->cipher_list_by_id);
1129 }
1130 }
1131 return(NULL);
1132 }
1133
1134/** The old interface to get the same thing as SSL_get_ciphers() */
1135const char *SSL_get_cipher_list(const SSL *s,int n)
1136 {
1137 SSL_CIPHER *c;
1138 STACK_OF(SSL_CIPHER) *sk;
1139
1140 if (s == NULL) return(NULL);
1141 sk=SSL_get_ciphers(s);
1142 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1143 return(NULL);
1144 c=sk_SSL_CIPHER_value(sk,n);
1145 if (c == NULL) return(NULL);
1146 return(c->name);
1147 }
1148
1149/** specify the ciphers to be used by default by the SSL_CTX */
1150int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1151 {
1152 STACK_OF(SSL_CIPHER) *sk;
1153
1154 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1155 &ctx->cipher_list_by_id,str);
1156 /* ssl_create_cipher_list may return an empty stack if it
1157 * was unable to find a cipher matching the given rule string
1158 * (for example if the rule string specifies a cipher which
1159 * has been disabled). This is not an error as far as
1160 * ssl_create_cipher_list is concerned, and hence
1161 * ctx->cipher_list and ctx->cipher_list_by_id has been
1162 * updated. */
1163 if (sk == NULL)
1164 return 0;
1165 else if (sk_SSL_CIPHER_num(sk) == 0)
1166 {
1167 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1168 return 0;
1169 }
1170 return 1;
1171 }
1172
1173/** specify the ciphers to be used by the SSL */
1174int SSL_set_cipher_list(SSL *s,const char *str)
1175 {
1176 STACK_OF(SSL_CIPHER) *sk;
1177
1178 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1179 &s->cipher_list_by_id,str);
1180 /* see comment in SSL_CTX_set_cipher_list */
1181 if (sk == NULL)
1182 return 0;
1183 else if (sk_SSL_CIPHER_num(sk) == 0)
1184 {
1185 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1186 return 0;
1187 }
1188 return 1;
1189 }
1190
1191/* works well for SSLv2, not so good for SSLv3 */
1192char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len)
1193 {
1194 char *p;
1195 const char *cp;
1196 STACK_OF(SSL_CIPHER) *sk;
1197 SSL_CIPHER *c;
1198 int i;
1199
1200 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1201 (len < 2))
1202 return(NULL);
1203
1204 p=buf;
1205 sk=s->session->ciphers;
1206 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1207 {
1208 /* Decrement for either the ':' or a '\0' */
1209 len--;
1210 c=sk_SSL_CIPHER_value(sk,i);
1211 for (cp=c->name; *cp; )
1212 {
1213 if (len-- == 0)
1214 {
1215 *p='\0';
1216 return(buf);
1217 }
1218 else
1219 *(p++)= *(cp++);
1220 }
1221 *(p++)=':';
1222 }
1223 p[-1]='\0';
1224 return(buf);
1225 }
1226
1227int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
1228 int (*put_cb)(const SSL_CIPHER *, unsigned char *))
1229 {
1230 int i,j=0;
1231 SSL_CIPHER *c;
1232 unsigned char *q;
1233#ifndef OPENSSL_NO_KRB5
1234 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1235#endif /* OPENSSL_NO_KRB5 */
1236
1237 if (sk == NULL) return(0);
1238 q=p;
1239
1240 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1241 {
1242 c=sk_SSL_CIPHER_value(sk,i);
1243#ifndef OPENSSL_NO_KRB5
1244 if ((c->algorithms & SSL_KRB5) && nokrb5)
1245 continue;
1246#endif /* OPENSSL_NO_KRB5 */
1247
1248 j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p);
1249 p+=j;
1250 }
1251 return(p-q);
1252 }
1253
1254STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1255 STACK_OF(SSL_CIPHER) **skp)
1256 {
1257 SSL_CIPHER *c;
1258 STACK_OF(SSL_CIPHER) *sk;
1259 int i,n;
1260
1261 n=ssl_put_cipher_by_char(s,NULL,NULL);
1262 if ((num%n) != 0)
1263 {
1264 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1265 return(NULL);
1266 }
1267 if ((skp == NULL) || (*skp == NULL))
1268 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1269 else
1270 {
1271 sk= *skp;
1272 sk_SSL_CIPHER_zero(sk);
1273 }
1274
1275 for (i=0; i<num; i+=n)
1276 {
1277 c=ssl_get_cipher_by_char(s,p);
1278 p+=n;
1279 if (c != NULL)
1280 {
1281 if (!sk_SSL_CIPHER_push(sk,c))
1282 {
1283 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1284 goto err;
1285 }
1286 }
1287 }
1288
1289 if (skp != NULL)
1290 *skp=sk;
1291 return(sk);
1292err:
1293 if ((skp == NULL) || (*skp == NULL))
1294 sk_SSL_CIPHER_free(sk);
1295 return(NULL);
1296 }
1297
1298unsigned long SSL_SESSION_hash(const SSL_SESSION *a)
1299 {
1300 unsigned long l;
1301
1302 l=(unsigned long)
1303 ((unsigned int) a->session_id[0] )|
1304 ((unsigned int) a->session_id[1]<< 8L)|
1305 ((unsigned long)a->session_id[2]<<16L)|
1306 ((unsigned long)a->session_id[3]<<24L);
1307 return(l);
1308 }
1309
1310/* NB: If this function (or indeed the hash function which uses a sort of
1311 * coarser function than this one) is changed, ensure
1312 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1313 * able to construct an SSL_SESSION that will collide with any existing session
1314 * with a matching session ID. */
1315int SSL_SESSION_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
1316 {
1317 if (a->ssl_version != b->ssl_version)
1318 return(1);
1319 if (a->session_id_length != b->session_id_length)
1320 return(1);
1321 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1322 }
1323
1324/* These wrapper functions should remain rather than redeclaring
1325 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1326 * variable. The reason is that the functions aren't static, they're exposed via
1327 * ssl.h. */
1328static IMPLEMENT_LHASH_HASH_FN(SSL_SESSION_hash, SSL_SESSION *)
1329static IMPLEMENT_LHASH_COMP_FN(SSL_SESSION_cmp, SSL_SESSION *)
1330
1331SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
1332 {
1333 SSL_CTX *ret=NULL;
1334
1335 if (meth == NULL)
1336 {
1337 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1338 return(NULL);
1339 }
1340
1341 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1342 {
1343 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1344 goto err;
1345 }
1346 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1347 if (ret == NULL)
1348 goto err;
1349
1350 memset(ret,0,sizeof(SSL_CTX));
1351
1352 ret->method=meth;
1353
1354 ret->cert_store=NULL;
1355 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1356 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1357 ret->session_cache_head=NULL;
1358 ret->session_cache_tail=NULL;
1359
1360 /* We take the system default */
1361 ret->session_timeout=meth->get_timeout();
1362
1363 ret->new_session_cb=0;
1364 ret->remove_session_cb=0;
1365 ret->get_session_cb=0;
1366 ret->generate_session_id=0;
1367
1368 memset((char *)&ret->stats,0,sizeof(ret->stats));
1369
1370 ret->references=1;
1371 ret->quiet_shutdown=0;
1372
1373/* ret->cipher=NULL;*/
1374/* ret->s2->challenge=NULL;
1375 ret->master_key=NULL;
1376 ret->key_arg=NULL;
1377 ret->s2->conn_id=NULL; */
1378
1379 ret->info_callback=NULL;
1380
1381 ret->app_verify_callback=0;
1382 ret->app_verify_arg=NULL;
1383
1384 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1385 ret->read_ahead=0;
1386 ret->msg_callback=0;
1387 ret->msg_callback_arg=NULL;
1388 ret->verify_mode=SSL_VERIFY_NONE;
1389#if 0
1390 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1391#endif
1392 ret->sid_ctx_length=0;
1393 ret->default_verify_callback=NULL;
1394 if ((ret->cert=ssl_cert_new()) == NULL)
1395 goto err;
1396
1397 ret->default_passwd_callback=0;
1398 ret->default_passwd_callback_userdata=NULL;
1399 ret->client_cert_cb=0;
1400 ret->app_gen_cookie_cb=0;
1401 ret->app_verify_cookie_cb=0;
1402
1403 ret->sessions=lh_new(LHASH_HASH_FN(SSL_SESSION_hash),
1404 LHASH_COMP_FN(SSL_SESSION_cmp));
1405 if (ret->sessions == NULL) goto err;
1406 ret->cert_store=X509_STORE_new();
1407 if (ret->cert_store == NULL) goto err;
1408
1409 ssl_create_cipher_list(ret->method,
1410 &ret->cipher_list,&ret->cipher_list_by_id,
1411 SSL_DEFAULT_CIPHER_LIST);
1412 if (ret->cipher_list == NULL
1413 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1414 {
1415 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1416 goto err2;
1417 }
1418
1419 ret->param = X509_VERIFY_PARAM_new();
1420 if (!ret->param)
1421 goto err;
1422
1423 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1424 {
1425 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1426 goto err2;
1427 }
1428 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1429 {
1430 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1431 goto err2;
1432 }
1433 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1434 {
1435 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1436 goto err2;
1437 }
1438
1439 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1440 goto err;
1441
1442 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1443
1444 ret->extra_certs=NULL;
1445 ret->comp_methods=SSL_COMP_get_compression_methods();
1446
1447 return(ret);
1448err:
1449 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1450err2:
1451 if (ret != NULL) SSL_CTX_free(ret);
1452 return(NULL);
1453 }
1454
1455#if 0
1456static void SSL_COMP_free(SSL_COMP *comp)
1457 { OPENSSL_free(comp); }
1458#endif
1459
1460void SSL_CTX_free(SSL_CTX *a)
1461 {
1462 int i;
1463
1464 if (a == NULL) return;
1465
1466 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1467#ifdef REF_PRINT
1468 REF_PRINT("SSL_CTX",a);
1469#endif
1470 if (i > 0) return;
1471#ifdef REF_CHECK
1472 if (i < 0)
1473 {
1474 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1475 abort(); /* ok */
1476 }
1477#endif
1478
1479 if (a->param)
1480 X509_VERIFY_PARAM_free(a->param);
1481
1482 /*
1483 * Free internal session cache. However: the remove_cb() may reference
1484 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1485 * after the sessions were flushed.
1486 * As the ex_data handling routines might also touch the session cache,
1487 * the most secure solution seems to be: empty (flush) the cache, then
1488 * free ex_data, then finally free the cache.
1489 * (See ticket [openssl.org #212].)
1490 */
1491 if (a->sessions != NULL)
1492 SSL_CTX_flush_sessions(a,0);
1493
1494 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1495
1496 if (a->sessions != NULL)
1497 lh_free(a->sessions);
1498
1499 if (a->cert_store != NULL)
1500 X509_STORE_free(a->cert_store);
1501 if (a->cipher_list != NULL)
1502 sk_SSL_CIPHER_free(a->cipher_list);
1503 if (a->cipher_list_by_id != NULL)
1504 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1505 if (a->cert != NULL)
1506 ssl_cert_free(a->cert);
1507 if (a->client_CA != NULL)
1508 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1509 if (a->extra_certs != NULL)
1510 sk_X509_pop_free(a->extra_certs,X509_free);
1511#if 0 /* This should never be done, since it removes a global database */
1512 if (a->comp_methods != NULL)
1513 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1514#else
1515 a->comp_methods = NULL;
1516#endif
1517 OPENSSL_free(a);
1518 }
1519
1520void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1521 {
1522 ctx->default_passwd_callback=cb;
1523 }
1524
1525void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1526 {
1527 ctx->default_passwd_callback_userdata=u;
1528 }
1529
1530void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
1531 {
1532 ctx->app_verify_callback=cb;
1533 ctx->app_verify_arg=arg;
1534 }
1535
1536void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1537 {
1538 ctx->verify_mode=mode;
1539 ctx->default_verify_callback=cb;
1540 }
1541
1542void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
1543 {
1544 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
1545 }
1546
1547void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
1548 {
1549 CERT_PKEY *cpk;
1550 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1551 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1552 int rsa_tmp_export,dh_tmp_export,kl;
1553 unsigned long mask,emask;
1554 int have_ecc_cert, have_ecdh_tmp, ecdh_ok, ecdsa_ok, ecc_pkey_size;
1555 X509 *x = NULL;
1556 EVP_PKEY *ecc_pkey = NULL;
1557 int signature_nid = 0;
1558
1559 if (c == NULL) return;
1560
1561 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1562
1563#ifndef OPENSSL_NO_RSA
1564 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
1565 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
1566 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
1567#else
1568 rsa_tmp=rsa_tmp_export=0;
1569#endif
1570#ifndef OPENSSL_NO_DH
1571 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
1572 dh_tmp_export=(c->dh_tmp_cb != NULL ||
1573 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
1574#else
1575 dh_tmp=dh_tmp_export=0;
1576#endif
1577
1578#ifndef OPENSSL_NO_ECDH
1579 have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL);
1580#endif
1581 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1582 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
1583 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1584 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1585 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1586 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1587 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1588 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1589 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1590 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1591 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1592/* FIX THIS EAY EAY EAY */
1593 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1594 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1595 cpk= &(c->pkeys[SSL_PKEY_ECC]);
1596 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL);
1597 mask=0;
1598 emask=0;
1599
1600#ifdef CIPHER_DEBUG
1601 printf("rt=%d rte=%d dht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1602 rsa_tmp,rsa_tmp_export,dh_tmp,
1603 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1604#endif
1605
1606 if (rsa_enc || (rsa_tmp && rsa_sign))
1607 mask|=SSL_kRSA;
1608 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
1609 emask|=SSL_kRSA;
1610
1611#if 0
1612 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1613 if ( (dh_tmp || dh_rsa || dh_dsa) &&
1614 (rsa_enc || rsa_sign || dsa_sign))
1615 mask|=SSL_kEDH;
1616 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1617 (rsa_enc || rsa_sign || dsa_sign))
1618 emask|=SSL_kEDH;
1619#endif
1620
1621 if (dh_tmp_export)
1622 emask|=SSL_kEDH;
1623
1624 if (dh_tmp)
1625 mask|=SSL_kEDH;
1626
1627 if (dh_rsa) mask|=SSL_kDHr;
1628 if (dh_rsa_export) emask|=SSL_kDHr;
1629
1630 if (dh_dsa) mask|=SSL_kDHd;
1631 if (dh_dsa_export) emask|=SSL_kDHd;
1632
1633 if (rsa_enc || rsa_sign)
1634 {
1635 mask|=SSL_aRSA;
1636 emask|=SSL_aRSA;
1637 }
1638
1639 if (dsa_sign)
1640 {
1641 mask|=SSL_aDSS;
1642 emask|=SSL_aDSS;
1643 }
1644
1645 mask|=SSL_aNULL;
1646 emask|=SSL_aNULL;
1647
1648#ifndef OPENSSL_NO_KRB5
1649 mask|=SSL_kKRB5|SSL_aKRB5;
1650 emask|=SSL_kKRB5|SSL_aKRB5;
1651#endif
1652
1653 /* An ECC certificate may be usable for ECDH and/or
1654 * ECDSA cipher suites depending on the key usage extension.
1655 */
1656 if (have_ecc_cert)
1657 {
1658 /* This call populates extension flags (ex_flags) */
1659 x = (c->pkeys[SSL_PKEY_ECC]).x509;
1660 X509_check_purpose(x, -1, 0);
1661 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1662 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
1663 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1664 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
1665 ecc_pkey = X509_get_pubkey(x);
1666 ecc_pkey_size = (ecc_pkey != NULL) ?
1667 EVP_PKEY_bits(ecc_pkey) : 0;
1668 EVP_PKEY_free(ecc_pkey);
1669 if ((x->sig_alg) && (x->sig_alg->algorithm))
1670 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
1671#ifndef OPENSSL_NO_ECDH
1672 if (ecdh_ok)
1673 {
1674 if ((signature_nid == NID_md5WithRSAEncryption) ||
1675 (signature_nid == NID_md4WithRSAEncryption) ||
1676 (signature_nid == NID_md2WithRSAEncryption))
1677 {
1678 mask|=SSL_kECDH|SSL_aRSA;
1679 if (ecc_pkey_size <= 163)
1680 emask|=SSL_kECDH|SSL_aRSA;
1681 }
1682 if (signature_nid == NID_ecdsa_with_SHA1)
1683 {
1684 mask|=SSL_kECDH|SSL_aECDSA;
1685 if (ecc_pkey_size <= 163)
1686 emask|=SSL_kECDH|SSL_aECDSA;
1687 }
1688 }
1689#endif
1690#ifndef OPENSSL_NO_ECDSA
1691 if (ecdsa_ok)
1692 {
1693 mask|=SSL_aECDSA;
1694 emask|=SSL_aECDSA;
1695 }
1696#endif
1697 }
1698
1699#ifndef OPENSSL_NO_ECDH
1700 if (have_ecdh_tmp)
1701 {
1702 mask|=SSL_kECDHE;
1703 emask|=SSL_kECDHE;
1704 }
1705#endif
1706 c->mask=mask;
1707 c->export_mask=emask;
1708 c->valid=1;
1709 }
1710
1711/* This handy macro borrowed from crypto/x509v3/v3_purp.c */
1712#define ku_reject(x, usage) \
1713 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
1714
1715int check_srvr_ecc_cert_and_alg(X509 *x, SSL_CIPHER *cs)
1716 {
1717 unsigned long alg = cs->algorithms;
1718 EVP_PKEY *pkey = NULL;
1719 int keysize = 0;
1720 int signature_nid = 0;
1721
1722 if (SSL_C_IS_EXPORT(cs))
1723 {
1724 /* ECDH key length in export ciphers must be <= 163 bits */
1725 pkey = X509_get_pubkey(x);
1726 if (pkey == NULL) return 0;
1727 keysize = EVP_PKEY_bits(pkey);
1728 EVP_PKEY_free(pkey);
1729 if (keysize > 163) return 0;
1730 }
1731
1732 /* This call populates the ex_flags field correctly */
1733 X509_check_purpose(x, -1, 0);
1734 if ((x->sig_alg) && (x->sig_alg->algorithm))
1735 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
1736 if (alg & SSL_kECDH)
1737 {
1738 /* key usage, if present, must allow key agreement */
1739 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT))
1740 {
1741 return 0;
1742 }
1743 if (alg & SSL_aECDSA)
1744 {
1745 /* signature alg must be ECDSA */
1746 if (signature_nid != NID_ecdsa_with_SHA1)
1747 {
1748 return 0;
1749 }
1750 }
1751 if (alg & SSL_aRSA)
1752 {
1753 /* signature alg must be RSA */
1754 if ((signature_nid != NID_md5WithRSAEncryption) &&
1755 (signature_nid != NID_md4WithRSAEncryption) &&
1756 (signature_nid != NID_md2WithRSAEncryption))
1757 {
1758 return 0;
1759 }
1760 }
1761 }
1762 else if (alg & SSL_aECDSA)
1763 {
1764 /* key usage, if present, must allow signing */
1765 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE))
1766 {
1767 return 0;
1768 }
1769 }
1770
1771 return 1; /* all checks are ok */
1772 }
1773
1774/* THIS NEEDS CLEANING UP */
1775X509 *ssl_get_server_send_cert(SSL *s)
1776 {
1777 unsigned long alg,mask,kalg;
1778 CERT *c;
1779 int i,is_export;
1780
1781 c=s->cert;
1782 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
1783 alg=s->s3->tmp.new_cipher->algorithms;
1784 is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
1785 mask=is_export?c->export_mask:c->mask;
1786 kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK);
1787
1788 if (kalg & SSL_kECDH)
1789 {
1790 /* we don't need to look at SSL_kECDHE
1791 * since no certificate is needed for
1792 * anon ECDH and for authenticated
1793 * ECDHE, the check for the auth
1794 * algorithm will set i correctly
1795 * NOTE: For ECDH-RSA, we need an ECC
1796 * not an RSA cert but for ECDHE-RSA
1797 * we need an RSA cert. Placing the
1798 * checks for SSL_kECDH before RSA
1799 * checks ensures the correct cert is chosen.
1800 */
1801 i=SSL_PKEY_ECC;
1802 }
1803 else if (kalg & SSL_aECDSA)
1804 {
1805 i=SSL_PKEY_ECC;
1806 }
1807 else if (kalg & SSL_kDHr)
1808 i=SSL_PKEY_DH_RSA;
1809 else if (kalg & SSL_kDHd)
1810 i=SSL_PKEY_DH_DSA;
1811 else if (kalg & SSL_aDSS)
1812 i=SSL_PKEY_DSA_SIGN;
1813 else if (kalg & SSL_aRSA)
1814 {
1815 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
1816 i=SSL_PKEY_RSA_SIGN;
1817 else
1818 i=SSL_PKEY_RSA_ENC;
1819 }
1820 else if (kalg & SSL_aKRB5)
1821 {
1822 /* VRS something else here? */
1823 return(NULL);
1824 }
1825 else /* if (kalg & SSL_aNULL) */
1826 {
1827 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR);
1828 return(NULL);
1829 }
1830 if (c->pkeys[i].x509 == NULL) return(NULL);
1831
1832 return(c->pkeys[i].x509);
1833 }
1834
1835EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher)
1836 {
1837 unsigned long alg;
1838 CERT *c;
1839
1840 alg=cipher->algorithms;
1841 c=s->cert;
1842
1843 if ((alg & SSL_aDSS) &&
1844 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
1845 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
1846 else if (alg & SSL_aRSA)
1847 {
1848 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
1849 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
1850 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
1851 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
1852 else
1853 return(NULL);
1854 }
1855 else if ((alg & SSL_aECDSA) &&
1856 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
1857 return(c->pkeys[SSL_PKEY_ECC].privatekey);
1858 else /* if (alg & SSL_aNULL) */
1859 {
1860 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
1861 return(NULL);
1862 }
1863 }
1864
1865void ssl_update_cache(SSL *s,int mode)
1866 {
1867 int i;
1868
1869 /* If the session_id_length is 0, we are not supposed to cache it,
1870 * and it would be rather hard to do anyway :-) */
1871 if (s->session->session_id_length == 0) return;
1872
1873 i=s->ctx->session_cache_mode;
1874 if ((i & mode) && (!s->hit)
1875 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
1876 || SSL_CTX_add_session(s->ctx,s->session))
1877 && (s->ctx->new_session_cb != NULL))
1878 {
1879 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
1880 if (!s->ctx->new_session_cb(s,s->session))
1881 SSL_SESSION_free(s->session);
1882 }
1883
1884 /* auto flush every 255 connections */
1885 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
1886 ((i & mode) == mode))
1887 {
1888 if ( (((mode & SSL_SESS_CACHE_CLIENT)
1889 ?s->ctx->stats.sess_connect_good
1890 :s->ctx->stats.sess_accept_good) & 0xff) == 0xff)
1891 {
1892 SSL_CTX_flush_sessions(s->ctx,time(NULL));
1893 }
1894 }
1895 }
1896
1897SSL_METHOD *SSL_get_ssl_method(SSL *s)
1898 {
1899 return(s->method);
1900 }
1901
1902int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth)
1903 {
1904 int conn= -1;
1905 int ret=1;
1906
1907 if (s->method != meth)
1908 {
1909 if (s->handshake_func != NULL)
1910 conn=(s->handshake_func == s->method->ssl_connect);
1911
1912 if (s->method->version == meth->version)
1913 s->method=meth;
1914 else
1915 {
1916 s->method->ssl_free(s);
1917 s->method=meth;
1918 ret=s->method->ssl_new(s);
1919 }
1920
1921 if (conn == 1)
1922 s->handshake_func=meth->ssl_connect;
1923 else if (conn == 0)
1924 s->handshake_func=meth->ssl_accept;
1925 }
1926 return(ret);
1927 }
1928
1929int SSL_get_error(const SSL *s,int i)
1930 {
1931 int reason;
1932 unsigned long l;
1933 BIO *bio;
1934
1935 if (i > 0) return(SSL_ERROR_NONE);
1936
1937 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
1938 * etc, where we do encode the error */
1939 if ((l=ERR_peek_error()) != 0)
1940 {
1941 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
1942 return(SSL_ERROR_SYSCALL);
1943 else
1944 return(SSL_ERROR_SSL);
1945 }
1946
1947 if ((i < 0) && SSL_want_read(s))
1948 {
1949 bio=SSL_get_rbio(s);
1950 if (BIO_should_read(bio))
1951 return(SSL_ERROR_WANT_READ);
1952 else if (BIO_should_write(bio))
1953 /* This one doesn't make too much sense ... We never try
1954 * to write to the rbio, and an application program where
1955 * rbio and wbio are separate couldn't even know what it
1956 * should wait for.
1957 * However if we ever set s->rwstate incorrectly
1958 * (so that we have SSL_want_read(s) instead of
1959 * SSL_want_write(s)) and rbio and wbio *are* the same,
1960 * this test works around that bug; so it might be safer
1961 * to keep it. */
1962 return(SSL_ERROR_WANT_WRITE);
1963 else if (BIO_should_io_special(bio))
1964 {
1965 reason=BIO_get_retry_reason(bio);
1966 if (reason == BIO_RR_CONNECT)
1967 return(SSL_ERROR_WANT_CONNECT);
1968 else if (reason == BIO_RR_ACCEPT)
1969 return(SSL_ERROR_WANT_ACCEPT);
1970 else
1971 return(SSL_ERROR_SYSCALL); /* unknown */
1972 }
1973 }
1974
1975 if ((i < 0) && SSL_want_write(s))
1976 {
1977 bio=SSL_get_wbio(s);
1978 if (BIO_should_write(bio))
1979 return(SSL_ERROR_WANT_WRITE);
1980 else if (BIO_should_read(bio))
1981 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
1982 return(SSL_ERROR_WANT_READ);
1983 else if (BIO_should_io_special(bio))
1984 {
1985 reason=BIO_get_retry_reason(bio);
1986 if (reason == BIO_RR_CONNECT)
1987 return(SSL_ERROR_WANT_CONNECT);
1988 else if (reason == BIO_RR_ACCEPT)
1989 return(SSL_ERROR_WANT_ACCEPT);
1990 else
1991 return(SSL_ERROR_SYSCALL);
1992 }
1993 }
1994 if ((i < 0) && SSL_want_x509_lookup(s))
1995 {
1996 return(SSL_ERROR_WANT_X509_LOOKUP);
1997 }
1998
1999 if (i == 0)
2000 {
2001 if (s->version == SSL2_VERSION)
2002 {
2003 /* assume it is the socket being closed */
2004 return(SSL_ERROR_ZERO_RETURN);
2005 }
2006 else
2007 {
2008 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2009 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2010 return(SSL_ERROR_ZERO_RETURN);
2011 }
2012 }
2013 return(SSL_ERROR_SYSCALL);
2014 }
2015
2016int SSL_do_handshake(SSL *s)
2017 {
2018 int ret=1;
2019
2020 if (s->handshake_func == NULL)
2021 {
2022 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
2023 return(-1);
2024 }
2025
2026 s->method->ssl_renegotiate_check(s);
2027
2028 if (SSL_in_init(s) || SSL_in_before(s))
2029 {
2030 ret=s->handshake_func(s);
2031 }
2032 return(ret);
2033 }
2034
2035/* For the next 2 functions, SSL_clear() sets shutdown and so
2036 * one of these calls will reset it */
2037void SSL_set_accept_state(SSL *s)
2038 {
2039 s->server=1;
2040 s->shutdown=0;
2041 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
2042 s->handshake_func=s->method->ssl_accept;
2043 /* clear the current cipher */
2044 ssl_clear_cipher_ctx(s);
2045 }
2046
2047void SSL_set_connect_state(SSL *s)
2048 {
2049 s->server=0;
2050 s->shutdown=0;
2051 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
2052 s->handshake_func=s->method->ssl_connect;
2053 /* clear the current cipher */
2054 ssl_clear_cipher_ctx(s);
2055 }
2056
2057int ssl_undefined_function(SSL *s)
2058 {
2059 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2060 return(0);
2061 }
2062
2063int ssl_undefined_void_function(void)
2064 {
2065 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2066 return(0);
2067 }
2068
2069int ssl_undefined_const_function(const SSL *s)
2070 {
2071 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2072 return(0);
2073 }
2074
2075SSL_METHOD *ssl_bad_method(int ver)
2076 {
2077 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2078 return(NULL);
2079 }
2080
2081const char *SSL_get_version(const SSL *s)
2082 {
2083 if (s->version == TLS1_VERSION)
2084 return("TLSv1");
2085 else if (s->version == SSL3_VERSION)
2086 return("SSLv3");
2087 else if (s->version == SSL2_VERSION)
2088 return("SSLv2");
2089 else
2090 return("unknown");
2091 }
2092
2093SSL *SSL_dup(SSL *s)
2094 {
2095 STACK_OF(X509_NAME) *sk;
2096 X509_NAME *xn;
2097 SSL *ret;
2098 int i;
2099
2100 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2101 return(NULL);
2102
2103 ret->version = s->version;
2104 ret->type = s->type;
2105 ret->method = s->method;
2106
2107 if (s->session != NULL)
2108 {
2109 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2110 SSL_copy_session_id(ret,s);
2111 }
2112 else
2113 {
2114 /* No session has been established yet, so we have to expect
2115 * that s->cert or ret->cert will be changed later --
2116 * they should not both point to the same object,
2117 * and thus we can't use SSL_copy_session_id. */
2118
2119 ret->method->ssl_free(ret);
2120 ret->method = s->method;
2121 ret->method->ssl_new(ret);
2122
2123 if (s->cert != NULL)
2124 {
2125 if (ret->cert != NULL)
2126 {
2127 ssl_cert_free(ret->cert);
2128 }
2129 ret->cert = ssl_cert_dup(s->cert);
2130 if (ret->cert == NULL)
2131 goto err;
2132 }
2133
2134 SSL_set_session_id_context(ret,
2135 s->sid_ctx, s->sid_ctx_length);
2136 }
2137
2138 ret->options=s->options;
2139 ret->mode=s->mode;
2140 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
2141 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
2142 ret->msg_callback = s->msg_callback;
2143 ret->msg_callback_arg = s->msg_callback_arg;
2144 SSL_set_verify(ret,SSL_get_verify_mode(s),
2145 SSL_get_verify_callback(s));
2146 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
2147 ret->generate_session_id = s->generate_session_id;
2148
2149 SSL_set_info_callback(ret,SSL_get_info_callback(s));
2150
2151 ret->debug=s->debug;
2152
2153 /* copy app data, a little dangerous perhaps */
2154 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2155 goto err;
2156
2157 /* setup rbio, and wbio */
2158 if (s->rbio != NULL)
2159 {
2160 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
2161 goto err;
2162 }
2163 if (s->wbio != NULL)
2164 {
2165 if (s->wbio != s->rbio)
2166 {
2167 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
2168 goto err;
2169 }
2170 else
2171 ret->wbio=ret->rbio;
2172 }
2173 ret->rwstate = s->rwstate;
2174 ret->in_handshake = s->in_handshake;
2175 ret->handshake_func = s->handshake_func;
2176 ret->server = s->server;
2177 ret->new_session = s->new_session;
2178 ret->quiet_shutdown = s->quiet_shutdown;
2179 ret->shutdown=s->shutdown;
2180 ret->state=s->state; /* SSL_dup does not really work at any state, though */
2181 ret->rstate=s->rstate;
2182 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
2183 ret->hit=s->hit;
2184
2185 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2186
2187 /* dup the cipher_list and cipher_list_by_id stacks */
2188 if (s->cipher_list != NULL)
2189 {
2190 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2191 goto err;
2192 }
2193 if (s->cipher_list_by_id != NULL)
2194 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2195 == NULL)
2196 goto err;
2197
2198 /* Dup the client_CA list */
2199 if (s->client_CA != NULL)
2200 {
2201 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
2202 ret->client_CA=sk;
2203 for (i=0; i<sk_X509_NAME_num(sk); i++)
2204 {
2205 xn=sk_X509_NAME_value(sk,i);
2206 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
2207 {
2208 X509_NAME_free(xn);
2209 goto err;
2210 }
2211 }
2212 }
2213
2214 if (0)
2215 {
2216err:
2217 if (ret != NULL) SSL_free(ret);
2218 ret=NULL;
2219 }
2220 return(ret);
2221 }
2222
2223void ssl_clear_cipher_ctx(SSL *s)
2224 {
2225 if (s->enc_read_ctx != NULL)
2226 {
2227 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2228 OPENSSL_free(s->enc_read_ctx);
2229 s->enc_read_ctx=NULL;
2230 }
2231 if (s->enc_write_ctx != NULL)
2232 {
2233 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2234 OPENSSL_free(s->enc_write_ctx);
2235 s->enc_write_ctx=NULL;
2236 }
2237 if (s->expand != NULL)
2238 {
2239 COMP_CTX_free(s->expand);
2240 s->expand=NULL;
2241 }
2242 if (s->compress != NULL)
2243 {
2244 COMP_CTX_free(s->compress);
2245 s->compress=NULL;
2246 }
2247 }
2248
2249/* Fix this function so that it takes an optional type parameter */
2250X509 *SSL_get_certificate(const SSL *s)
2251 {
2252 if (s->cert != NULL)
2253 return(s->cert->key->x509);
2254 else
2255 return(NULL);
2256 }
2257
2258/* Fix this function so that it takes an optional type parameter */
2259EVP_PKEY *SSL_get_privatekey(SSL *s)
2260 {
2261 if (s->cert != NULL)
2262 return(s->cert->key->privatekey);
2263 else
2264 return(NULL);
2265 }
2266
2267SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2268 {
2269 if ((s->session != NULL) && (s->session->cipher != NULL))
2270 return(s->session->cipher);
2271 return(NULL);
2272 }
2273
2274const COMP_METHOD *SSL_get_current_compression(SSL *s)
2275 {
2276 if (s->compress != NULL)
2277 return(s->compress->meth);
2278 return(NULL);
2279 }
2280
2281const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2282 {
2283 if (s->expand != NULL)
2284 return(s->expand->meth);
2285 return(NULL);
2286 }
2287
2288int ssl_init_wbio_buffer(SSL *s,int push)
2289 {
2290 BIO *bbio;
2291
2292 if (s->bbio == NULL)
2293 {
2294 bbio=BIO_new(BIO_f_buffer());
2295 if (bbio == NULL) return(0);
2296 s->bbio=bbio;
2297 }
2298 else
2299 {
2300 bbio=s->bbio;
2301 if (s->bbio == s->wbio)
2302 s->wbio=BIO_pop(s->wbio);
2303 }
2304 (void)BIO_reset(bbio);
2305/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2306 if (!BIO_set_read_buffer_size(bbio,1))
2307 {
2308 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
2309 return(0);
2310 }
2311 if (push)
2312 {
2313 if (s->wbio != bbio)
2314 s->wbio=BIO_push(bbio,s->wbio);
2315 }
2316 else
2317 {
2318 if (s->wbio == bbio)
2319 s->wbio=BIO_pop(bbio);
2320 }
2321 return(1);
2322 }
2323
2324void ssl_free_wbio_buffer(SSL *s)
2325 {
2326 if (s->bbio == NULL) return;
2327
2328 if (s->bbio == s->wbio)
2329 {
2330 /* remove buffering */
2331 s->wbio=BIO_pop(s->wbio);
2332#ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
2333 assert(s->wbio != NULL);
2334#endif
2335 }
2336 BIO_free(s->bbio);
2337 s->bbio=NULL;
2338 }
2339
2340void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
2341 {
2342 ctx->quiet_shutdown=mode;
2343 }
2344
2345int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2346 {
2347 return(ctx->quiet_shutdown);
2348 }
2349
2350void SSL_set_quiet_shutdown(SSL *s,int mode)
2351 {
2352 s->quiet_shutdown=mode;
2353 }
2354
2355int SSL_get_quiet_shutdown(const SSL *s)
2356 {
2357 return(s->quiet_shutdown);
2358 }
2359
2360void SSL_set_shutdown(SSL *s,int mode)
2361 {
2362 s->shutdown=mode;
2363 }
2364
2365int SSL_get_shutdown(const SSL *s)
2366 {
2367 return(s->shutdown);
2368 }
2369
2370int SSL_version(const SSL *s)
2371 {
2372 return(s->version);
2373 }
2374
2375SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2376 {
2377 return(ssl->ctx);
2378 }
2379
2380#ifndef OPENSSL_NO_STDIO
2381int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2382 {
2383 return(X509_STORE_set_default_paths(ctx->cert_store));
2384 }
2385
2386int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2387 const char *CApath)
2388 {
2389 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2390 }
2391#endif
2392
2393void SSL_set_info_callback(SSL *ssl,
2394 void (*cb)(const SSL *ssl,int type,int val))
2395 {
2396 ssl->info_callback=cb;
2397 }
2398
2399/* One compiler (Diab DCC) doesn't like argument names in returned
2400 function pointer. */
2401void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/)
2402 {
2403 return ssl->info_callback;
2404 }
2405
2406int SSL_state(const SSL *ssl)
2407 {
2408 return(ssl->state);
2409 }
2410
2411void SSL_set_verify_result(SSL *ssl,long arg)
2412 {
2413 ssl->verify_result=arg;
2414 }
2415
2416long SSL_get_verify_result(const SSL *ssl)
2417 {
2418 return(ssl->verify_result);
2419 }
2420
2421int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2422 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2423 {
2424 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
2425 new_func, dup_func, free_func);
2426 }
2427
2428int SSL_set_ex_data(SSL *s,int idx,void *arg)
2429 {
2430 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2431 }
2432
2433void *SSL_get_ex_data(const SSL *s,int idx)
2434 {
2435 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2436 }
2437
2438int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2439 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2440 {
2441 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
2442 new_func, dup_func, free_func);
2443 }
2444
2445int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
2446 {
2447 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2448 }
2449
2450void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx)
2451 {
2452 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2453 }
2454
2455int ssl_ok(SSL *s)
2456 {
2457 return(1);
2458 }
2459
2460X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
2461 {
2462 return(ctx->cert_store);
2463 }
2464
2465void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
2466 {
2467 if (ctx->cert_store != NULL)
2468 X509_STORE_free(ctx->cert_store);
2469 ctx->cert_store=store;
2470 }
2471
2472int SSL_want(const SSL *s)
2473 {
2474 return(s->rwstate);
2475 }
2476
2477/*!
2478 * \brief Set the callback for generating temporary RSA keys.
2479 * \param ctx the SSL context.
2480 * \param cb the callback
2481 */
2482
2483#ifndef OPENSSL_NO_RSA
2484void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
2485 int is_export,
2486 int keylength))
2487 {
2488 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
2489 }
2490
2491void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
2492 int is_export,
2493 int keylength))
2494 {
2495 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
2496 }
2497#endif
2498
2499#ifdef DOXYGEN
2500/*!
2501 * \brief The RSA temporary key callback function.
2502 * \param ssl the SSL session.
2503 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
2504 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
2505 * of the required key in bits.
2506 * \return the temporary RSA key.
2507 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
2508 */
2509
2510RSA *cb(SSL *ssl,int is_export,int keylength)
2511 {}
2512#endif
2513
2514/*!
2515 * \brief Set the callback for generating temporary DH keys.
2516 * \param ctx the SSL context.
2517 * \param dh the callback
2518 */
2519
2520#ifndef OPENSSL_NO_DH
2521void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
2522 int keylength))
2523 {
2524 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
2525 }
2526
2527void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
2528 int keylength))
2529 {
2530 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
2531 }
2532#endif
2533
2534#ifndef OPENSSL_NO_ECDH
2535void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2536 int keylength))
2537 {
2538 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
2539 }
2540
2541void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2542 int keylength))
2543 {
2544 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
2545 }
2546#endif
2547
2548
2549void 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))
2550 {
2551 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
2552 }
2553void 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))
2554 {
2555 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
2556 }
2557
2558
2559
2560#if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
2561#include "../crypto/bio/bss_file.c"
2562#endif
2563
2564IMPLEMENT_STACK_OF(SSL_CIPHER)
2565IMPLEMENT_STACK_OF(SSL_COMP)