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Import OpenSSL-0.9.8i.
[dragonfly.git] / crypto / openssl-0.9.7d / ssl / ssl_lib.c
blobee9a82d5860d7fce5baa18bb64a8e7cade1c093d
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
115 #ifdef REF_CHECK
116 # include <assert.h>
117 #endif
118 #include <stdio.h>
119 #include "ssl_locl.h"
120 #include "kssl_lcl.h"
121 #include <openssl/objects.h>
122 #include <openssl/lhash.h>
123 #include <openssl/x509v3.h>
124
125 const char *SSL_version_str=OPENSSL_VERSION_TEXT;
126
127 OPENSSL_GLOBAL SSL3_ENC_METHOD ssl3_undef_enc_method={
128 /* evil casts, but these functions are only called if there's a library bug */
129 (int (*)(SSL *,int))ssl_undefined_function,
130 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
131 ssl_undefined_function,
132 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
133 (int (*)(SSL*, int))ssl_undefined_function,
134 (int (*)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char*, int, unsigned char *))ssl_undefined_function
135 };
136
137 int SSL_clear(SSL *s)
138 {
139
140 if (s->method == NULL)
141 {
142 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
143 return(0);
144 }
145
146 if (ssl_clear_bad_session(s))
147 {
148 SSL_SESSION_free(s->session);
149 s->session=NULL;
150 }
151
152 s->error=0;
153 s->hit=0;
154 s->shutdown=0;
155
156 #if 0 /* Disabled since version 1.10 of this file (early return not
157 * needed because SSL_clear is not called when doing renegotiation) */
158 /* This is set if we are doing dynamic renegotiation so keep
159 * the old cipher. It is sort of a SSL_clear_lite :-) */
160 if (s->new_session) return(1);
161 #else
162 if (s->new_session)
163 {
164 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR);
165 return 0;
166 }
167 #endif
168
169 s->type=0;
170
171 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
172
173 s->version=s->method->version;
174 s->client_version=s->version;
175 s->rwstate=SSL_NOTHING;
176 s->rstate=SSL_ST_READ_HEADER;
177 #if 0
178 s->read_ahead=s->ctx->read_ahead;
179 #endif
180
181 if (s->init_buf != NULL)
182 {
183 BUF_MEM_free(s->init_buf);
184 s->init_buf=NULL;
185 }
186
187 ssl_clear_cipher_ctx(s);
188
189 s->first_packet=0;
190
191 #if 1
192 /* Check to see if we were changed into a different method, if
193 * so, revert back if we are not doing session-id reuse. */
194 if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method))
195 {
196 s->method->ssl_free(s);
197 s->method=s->ctx->method;
198 if (!s->method->ssl_new(s))
199 return(0);
200 }
201 else
202 #endif
203 s->method->ssl_clear(s);
204 return(1);
205 }
206
207 /** Used to change an SSL_CTXs default SSL method type */
208 int SSL_CTX_set_ssl_version(SSL_CTX *ctx,SSL_METHOD *meth)
209 {
210 STACK_OF(SSL_CIPHER) *sk;
211
212 ctx->method=meth;
213
214 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
215 &(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST);
216 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
217 {
218 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
219 return(0);
220 }
221 return(1);
222 }
223
224 SSL *SSL_new(SSL_CTX *ctx)
225 {
226 SSL *s;
227
228 if (ctx == NULL)
229 {
230 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
231 return(NULL);
232 }
233 if (ctx->method == NULL)
234 {
235 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
236 return(NULL);
237 }
238
239 s=(SSL *)OPENSSL_malloc(sizeof(SSL));
240 if (s == NULL) goto err;
241 memset(s,0,sizeof(SSL));
242
243 #ifndef OPENSSL_NO_KRB5
244 s->kssl_ctx = kssl_ctx_new();
245 #endif /* OPENSSL_NO_KRB5 */
246
247 s->options=ctx->options;
248 s->mode=ctx->mode;
249 s->max_cert_list=ctx->max_cert_list;
250
251 if (ctx->cert != NULL)
252 {
253 /* Earlier library versions used to copy the pointer to
254 * the CERT, not its contents; only when setting new
255 * parameters for the per-SSL copy, ssl_cert_new would be
256 * called (and the direct reference to the per-SSL_CTX
257 * settings would be lost, but those still were indirectly
258 * accessed for various purposes, and for that reason they
259 * used to be known as s->ctx->default_cert).
260 * Now we don't look at the SSL_CTX's CERT after having
261 * duplicated it once. */
262
263 s->cert = ssl_cert_dup(ctx->cert);
264 if (s->cert == NULL)
265 goto err;
266 }
267 else
268 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
269
270 s->read_ahead=ctx->read_ahead;
271 s->msg_callback=ctx->msg_callback;
272 s->msg_callback_arg=ctx->msg_callback_arg;
273 s->verify_mode=ctx->verify_mode;
274 s->verify_depth=ctx->verify_depth;
275 s->sid_ctx_length=ctx->sid_ctx_length;
276 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
277 memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
278 s->verify_callback=ctx->default_verify_callback;
279 s->generate_session_id=ctx->generate_session_id;
280 s->purpose = ctx->purpose;
281 s->trust = ctx->trust;
282 s->quiet_shutdown=ctx->quiet_shutdown;
283
284 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
285 s->ctx=ctx;
286
287 s->verify_result=X509_V_OK;
288
289 s->method=ctx->method;
290
291 if (!s->method->ssl_new(s))
292 goto err;
293
294 s->references=1;
295 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
296
297 SSL_clear(s);
298
299 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
300
301 return(s);
302 err:
303 if (s != NULL)
304 {
305 if (s->cert != NULL)
306 ssl_cert_free(s->cert);
307 if (s->ctx != NULL)
308 SSL_CTX_free(s->ctx); /* decrement reference count */
309 OPENSSL_free(s);
310 }
311 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
312 return(NULL);
313 }
314
315 int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
316 unsigned int sid_ctx_len)
317 {
318 if(sid_ctx_len > sizeof ctx->sid_ctx)
319 {
320 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
321 return 0;
322 }
323 ctx->sid_ctx_length=sid_ctx_len;
324 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
325
326 return 1;
327 }
328
329 int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
330 unsigned int sid_ctx_len)
331 {
332 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
333 {
334 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
335 return 0;
336 }
337 ssl->sid_ctx_length=sid_ctx_len;
338 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
339
340 return 1;
341 }
342
343 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
344 {
345 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
346 ctx->generate_session_id = cb;
347 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
348 return 1;
349 }
350
351 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
352 {
353 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
354 ssl->generate_session_id = cb;
355 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
356 return 1;
357 }
358
359 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
360 unsigned int id_len)
361 {
362 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
363 * we can "construct" a session to give us the desired check - ie. to
364 * find if there's a session in the hash table that would conflict with
365 * any new session built out of this id/id_len and the ssl_version in
366 * use by this SSL. */
367 SSL_SESSION r, *p;
368
369 if(id_len > sizeof r.session_id)
370 return 0;
371
372 r.ssl_version = ssl->version;
373 r.session_id_length = id_len;
374 memcpy(r.session_id, id, id_len);
375 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
376 * callback is calling us to check the uniqueness of a shorter ID, it
377 * must be compared as a padded-out ID because that is what it will be
378 * converted to when the callback has finished choosing it. */
379 if((r.ssl_version == SSL2_VERSION) &&
380 (id_len < SSL2_SSL_SESSION_ID_LENGTH))
381 {
382 memset(r.session_id + id_len, 0,
383 SSL2_SSL_SESSION_ID_LENGTH - id_len);
384 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
385 }
386
387 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
388 p = (SSL_SESSION *)lh_retrieve(ssl->ctx->sessions, &r);
389 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
390 return (p != NULL);
391 }
392
393 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
394 {
395 return X509_PURPOSE_set(&s->purpose, purpose);
396 }
397
398 int SSL_set_purpose(SSL *s, int purpose)
399 {
400 return X509_PURPOSE_set(&s->purpose, purpose);
401 }
402
403 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
404 {
405 return X509_TRUST_set(&s->trust, trust);
406 }
407
408 int SSL_set_trust(SSL *s, int trust)
409 {
410 return X509_TRUST_set(&s->trust, trust);
411 }
412
413 void SSL_free(SSL *s)
414 {
415 int i;
416
417 if(s == NULL)
418 return;
419
420 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
421 #ifdef REF_PRINT
422 REF_PRINT("SSL",s);
423 #endif
424 if (i > 0) return;
425 #ifdef REF_CHECK
426 if (i < 0)
427 {
428 fprintf(stderr,"SSL_free, bad reference count\n");
429 abort(); /* ok */
430 }
431 #endif
432
433 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
434
435 if (s->bbio != NULL)
436 {
437 /* If the buffering BIO is in place, pop it off */
438 if (s->bbio == s->wbio)
439 {
440 s->wbio=BIO_pop(s->wbio);
441 }
442 BIO_free(s->bbio);
443 s->bbio=NULL;
444 }
445 if (s->rbio != NULL)
446 BIO_free_all(s->rbio);
447 if ((s->wbio != NULL) && (s->wbio != s->rbio))
448 BIO_free_all(s->wbio);
449
450 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
451
452 /* add extra stuff */
453 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
454 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
455
456 /* Make the next call work :-) */
457 if (s->session != NULL)
458 {
459 ssl_clear_bad_session(s);
460 SSL_SESSION_free(s->session);
461 }
462
463 ssl_clear_cipher_ctx(s);
464
465 if (s->cert != NULL) ssl_cert_free(s->cert);
466 /* Free up if allocated */
467
468 if (s->ctx) SSL_CTX_free(s->ctx);
469
470 if (s->client_CA != NULL)
471 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
472
473 if (s->method != NULL) s->method->ssl_free(s);
474
475 #ifndef OPENSSL_NO_KRB5
476 if (s->kssl_ctx != NULL)
477 kssl_ctx_free(s->kssl_ctx);
478 #endif /* OPENSSL_NO_KRB5 */
479
480 OPENSSL_free(s);
481 }
482
483 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
484 {
485 /* If the output buffering BIO is still in place, remove it
486 */
487 if (s->bbio != NULL)
488 {
489 if (s->wbio == s->bbio)
490 {
491 s->wbio=s->wbio->next_bio;
492 s->bbio->next_bio=NULL;
493 }
494 }
495 if ((s->rbio != NULL) && (s->rbio != rbio))
496 BIO_free_all(s->rbio);
497 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
498 BIO_free_all(s->wbio);
499 s->rbio=rbio;
500 s->wbio=wbio;
501 }
502
503 BIO *SSL_get_rbio(SSL *s)
504 { return(s->rbio); }
505
506 BIO *SSL_get_wbio(SSL *s)
507 { return(s->wbio); }
508
509 int SSL_get_fd(SSL *s)
510 {
511 return(SSL_get_rfd(s));
512 }
513
514 int SSL_get_rfd(SSL *s)
515 {
516 int ret= -1;
517 BIO *b,*r;
518
519 b=SSL_get_rbio(s);
520 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
521 if (r != NULL)
522 BIO_get_fd(r,&ret);
523 return(ret);
524 }
525
526 int SSL_get_wfd(SSL *s)
527 {
528 int ret= -1;
529 BIO *b,*r;
530
531 b=SSL_get_wbio(s);
532 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
533 if (r != NULL)
534 BIO_get_fd(r,&ret);
535 return(ret);
536 }
537
538 #ifndef OPENSSL_NO_SOCK
539 int SSL_set_fd(SSL *s,int fd)
540 {
541 int ret=0;
542 BIO *bio=NULL;
543
544 bio=BIO_new(BIO_s_socket());
545
546 if (bio == NULL)
547 {
548 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
549 goto err;
550 }
551 BIO_set_fd(bio,fd,BIO_NOCLOSE);
552 SSL_set_bio(s,bio,bio);
553 ret=1;
554 err:
555 return(ret);
556 }
557
558 int SSL_set_wfd(SSL *s,int fd)
559 {
560 int ret=0;
561 BIO *bio=NULL;
562
563 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
564 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
565 {
566 bio=BIO_new(BIO_s_socket());
567
568 if (bio == NULL)
569 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
570 BIO_set_fd(bio,fd,BIO_NOCLOSE);
571 SSL_set_bio(s,SSL_get_rbio(s),bio);
572 }
573 else
574 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
575 ret=1;
576 err:
577 return(ret);
578 }
579
580 int SSL_set_rfd(SSL *s,int fd)
581 {
582 int ret=0;
583 BIO *bio=NULL;
584
585 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
586 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
587 {
588 bio=BIO_new(BIO_s_socket());
589
590 if (bio == NULL)
591 {
592 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
593 goto err;
594 }
595 BIO_set_fd(bio,fd,BIO_NOCLOSE);
596 SSL_set_bio(s,bio,SSL_get_wbio(s));
597 }
598 else
599 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
600 ret=1;
601 err:
602 return(ret);
603 }
604 #endif
605
606
607 /* return length of latest Finished message we sent, copy to 'buf' */
608 size_t SSL_get_finished(SSL *s, void *buf, size_t count)
609 {
610 size_t ret = 0;
611
612 if (s->s3 != NULL)
613 {
614 ret = s->s3->tmp.finish_md_len;
615 if (count > ret)
616 count = ret;
617 memcpy(buf, s->s3->tmp.finish_md, count);
618 }
619 return ret;
620 }
621
622 /* return length of latest Finished message we expected, copy to 'buf' */
623 size_t SSL_get_peer_finished(SSL *s, void *buf, size_t count)
624 {
625 size_t ret = 0;
626
627 if (s->s3 != NULL)
628 {
629 ret = s->s3->tmp.peer_finish_md_len;
630 if (count > ret)
631 count = ret;
632 memcpy(buf, s->s3->tmp.peer_finish_md, count);
633 }
634 return ret;
635 }
636
637
638 int SSL_get_verify_mode(SSL *s)
639 {
640 return(s->verify_mode);
641 }
642
643 int SSL_get_verify_depth(SSL *s)
644 {
645 return(s->verify_depth);
646 }
647
648 int (*SSL_get_verify_callback(SSL *s))(int,X509_STORE_CTX *)
649 {
650 return(s->verify_callback);
651 }
652
653 int SSL_CTX_get_verify_mode(SSL_CTX *ctx)
654 {
655 return(ctx->verify_mode);
656 }
657
658 int SSL_CTX_get_verify_depth(SSL_CTX *ctx)
659 {
660 return(ctx->verify_depth);
661 }
662
663 int (*SSL_CTX_get_verify_callback(SSL_CTX *ctx))(int,X509_STORE_CTX *)
664 {
665 return(ctx->default_verify_callback);
666 }
667
668 void SSL_set_verify(SSL *s,int mode,
669 int (*callback)(int ok,X509_STORE_CTX *ctx))
670 {
671 s->verify_mode=mode;
672 if (callback != NULL)
673 s->verify_callback=callback;
674 }
675
676 void SSL_set_verify_depth(SSL *s,int depth)
677 {
678 s->verify_depth=depth;
679 }
680
681 void SSL_set_read_ahead(SSL *s,int yes)
682 {
683 s->read_ahead=yes;
684 }
685
686 int SSL_get_read_ahead(SSL *s)
687 {
688 return(s->read_ahead);
689 }
690
691 int SSL_pending(SSL *s)
692 {
693 /* SSL_pending cannot work properly if read-ahead is enabled
694 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
695 * and it is impossible to fix since SSL_pending cannot report
696 * errors that may be observed while scanning the new data.
697 * (Note that SSL_pending() is often used as a boolean value,
698 * so we'd better not return -1.)
699 */
700 return(s->method->ssl_pending(s));
701 }
702
703 X509 *SSL_get_peer_certificate(SSL *s)
704 {
705 X509 *r;
706
707 if ((s == NULL) || (s->session == NULL))
708 r=NULL;
709 else
710 r=s->session->peer;
711
712 if (r == NULL) return(r);
713
714 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
715
716 return(r);
717 }
718
719 STACK_OF(X509) *SSL_get_peer_cert_chain(SSL *s)
720 {
721 STACK_OF(X509) *r;
722
723 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
724 r=NULL;
725 else
726 r=s->session->sess_cert->cert_chain;
727
728 /* If we are a client, cert_chain includes the peer's own
729 * certificate; if we are a server, it does not. */
730
731 return(r);
732 }
733
734 /* Now in theory, since the calling process own 't' it should be safe to
735 * modify. We need to be able to read f without being hassled */
736 void SSL_copy_session_id(SSL *t,SSL *f)
737 {
738 CERT *tmp;
739
740 /* Do we need to to SSL locking? */
741 SSL_set_session(t,SSL_get_session(f));
742
743 /* what if we are setup as SSLv2 but want to talk SSLv3 or
744 * vice-versa */
745 if (t->method != f->method)
746 {
747 t->method->ssl_free(t); /* cleanup current */
748 t->method=f->method; /* change method */
749 t->method->ssl_new(t); /* setup new */
750 }
751
752 tmp=t->cert;
753 if (f->cert != NULL)
754 {
755 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
756 t->cert=f->cert;
757 }
758 else
759 t->cert=NULL;
760 if (tmp != NULL) ssl_cert_free(tmp);
761 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
762 }
763
764 /* Fix this so it checks all the valid key/cert options */
765 int SSL_CTX_check_private_key(SSL_CTX *ctx)
766 {
767 if ( (ctx == NULL) ||
768 (ctx->cert == NULL) ||
769 (ctx->cert->key->x509 == NULL))
770 {
771 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
772 return(0);
773 }
774 if (ctx->cert->key->privatekey == NULL)
775 {
776 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
777 return(0);
778 }
779 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
780 }
781
782 /* Fix this function so that it takes an optional type parameter */
783 int SSL_check_private_key(SSL *ssl)
784 {
785 if (ssl == NULL)
786 {
787 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
788 return(0);
789 }
790 if (ssl->cert == NULL)
791 {
792 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
793 return 0;
794 }
795 if (ssl->cert->key->x509 == NULL)
796 {
797 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
798 return(0);
799 }
800 if (ssl->cert->key->privatekey == NULL)
801 {
802 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
803 return(0);
804 }
805 return(X509_check_private_key(ssl->cert->key->x509,
806 ssl->cert->key->privatekey));
807 }
808
809 int SSL_accept(SSL *s)
810 {
811 if (s->handshake_func == 0)
812 /* Not properly initialized yet */
813 SSL_set_accept_state(s);
814
815 return(s->method->ssl_accept(s));
816 }
817
818 int SSL_connect(SSL *s)
819 {
820 if (s->handshake_func == 0)
821 /* Not properly initialized yet */
822 SSL_set_connect_state(s);
823
824 return(s->method->ssl_connect(s));
825 }
826
827 long SSL_get_default_timeout(SSL *s)
828 {
829 return(s->method->get_timeout());
830 }
831
832 int SSL_read(SSL *s,void *buf,int num)
833 {
834 if (s->handshake_func == 0)
835 {
836 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
837 return -1;
838 }
839
840 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
841 {
842 s->rwstate=SSL_NOTHING;
843 return(0);
844 }
845 return(s->method->ssl_read(s,buf,num));
846 }
847
848 int SSL_peek(SSL *s,void *buf,int num)
849 {
850 if (s->handshake_func == 0)
851 {
852 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
853 return -1;
854 }
855
856 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
857 {
858 return(0);
859 }
860 return(s->method->ssl_peek(s,buf,num));
861 }
862
863 int SSL_write(SSL *s,const void *buf,int num)
864 {
865 if (s->handshake_func == 0)
866 {
867 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
868 return -1;
869 }
870
871 if (s->shutdown & SSL_SENT_SHUTDOWN)
872 {
873 s->rwstate=SSL_NOTHING;
874 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
875 return(-1);
876 }
877 return(s->method->ssl_write(s,buf,num));
878 }
879
880 int SSL_shutdown(SSL *s)
881 {
882 /* Note that this function behaves differently from what one might
883 * expect. Return values are 0 for no success (yet),
884 * 1 for success; but calling it once is usually not enough,
885 * even if blocking I/O is used (see ssl3_shutdown).
886 */
887
888 if (s->handshake_func == 0)
889 {
890 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
891 return -1;
892 }
893
894 if ((s != NULL) && !SSL_in_init(s))
895 return(s->method->ssl_shutdown(s));
896 else
897 return(1);
898 }
899
900 int SSL_renegotiate(SSL *s)
901 {
902 if (s->new_session == 0)
903 {
904 s->new_session=1;
905 }
906 return(s->method->ssl_renegotiate(s));
907 }
908
909 int SSL_renegotiate_pending(SSL *s)
910 {
911 /* becomes true when negotiation is requested;
912 * false again once a handshake has finished */
913 return (s->new_session != 0);
914 }
915
916 long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
917 {
918 long l;
919
920 switch (cmd)
921 {
922 case SSL_CTRL_GET_READ_AHEAD:
923 return(s->read_ahead);
924 case SSL_CTRL_SET_READ_AHEAD:
925 l=s->read_ahead;
926 s->read_ahead=larg;
927 return(l);
928
929 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
930 s->msg_callback_arg = parg;
931 return 1;
932
933 case SSL_CTRL_OPTIONS:
934 return(s->options|=larg);
935 case SSL_CTRL_MODE:
936 return(s->mode|=larg);
937 case SSL_CTRL_GET_MAX_CERT_LIST:
938 return(s->max_cert_list);
939 case SSL_CTRL_SET_MAX_CERT_LIST:
940 l=s->max_cert_list;
941 s->max_cert_list=larg;
942 return(l);
943 default:
944 return(s->method->ssl_ctrl(s,cmd,larg,parg));
945 }
946 }
947
948 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)())
949 {
950 switch(cmd)
951 {
952 case SSL_CTRL_SET_MSG_CALLBACK:
953 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
954 return 1;
955
956 default:
957 return(s->method->ssl_callback_ctrl(s,cmd,fp));
958 }
959 }
960
961 struct lhash_st *SSL_CTX_sessions(SSL_CTX *ctx)
962 {
963 return ctx->sessions;
964 }
965
966 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
967 {
968 long l;
969
970 switch (cmd)
971 {
972 case SSL_CTRL_GET_READ_AHEAD:
973 return(ctx->read_ahead);
974 case SSL_CTRL_SET_READ_AHEAD:
975 l=ctx->read_ahead;
976 ctx->read_ahead=larg;
977 return(l);
978
979 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
980 ctx->msg_callback_arg = parg;
981 return 1;
982
983 case SSL_CTRL_GET_MAX_CERT_LIST:
984 return(ctx->max_cert_list);
985 case SSL_CTRL_SET_MAX_CERT_LIST:
986 l=ctx->max_cert_list;
987 ctx->max_cert_list=larg;
988 return(l);
989
990 case SSL_CTRL_SET_SESS_CACHE_SIZE:
991 l=ctx->session_cache_size;
992 ctx->session_cache_size=larg;
993 return(l);
994 case SSL_CTRL_GET_SESS_CACHE_SIZE:
995 return(ctx->session_cache_size);
996 case SSL_CTRL_SET_SESS_CACHE_MODE:
997 l=ctx->session_cache_mode;
998 ctx->session_cache_mode=larg;
999 return(l);
1000 case SSL_CTRL_GET_SESS_CACHE_MODE:
1001 return(ctx->session_cache_mode);
1002
1003 case SSL_CTRL_SESS_NUMBER:
1004 return(ctx->sessions->num_items);
1005 case SSL_CTRL_SESS_CONNECT:
1006 return(ctx->stats.sess_connect);
1007 case SSL_CTRL_SESS_CONNECT_GOOD:
1008 return(ctx->stats.sess_connect_good);
1009 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1010 return(ctx->stats.sess_connect_renegotiate);
1011 case SSL_CTRL_SESS_ACCEPT:
1012 return(ctx->stats.sess_accept);
1013 case SSL_CTRL_SESS_ACCEPT_GOOD:
1014 return(ctx->stats.sess_accept_good);
1015 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1016 return(ctx->stats.sess_accept_renegotiate);
1017 case SSL_CTRL_SESS_HIT:
1018 return(ctx->stats.sess_hit);
1019 case SSL_CTRL_SESS_CB_HIT:
1020 return(ctx->stats.sess_cb_hit);
1021 case SSL_CTRL_SESS_MISSES:
1022 return(ctx->stats.sess_miss);
1023 case SSL_CTRL_SESS_TIMEOUTS:
1024 return(ctx->stats.sess_timeout);
1025 case SSL_CTRL_SESS_CACHE_FULL:
1026 return(ctx->stats.sess_cache_full);
1027 case SSL_CTRL_OPTIONS:
1028 return(ctx->options|=larg);
1029 case SSL_CTRL_MODE:
1030 return(ctx->mode|=larg);
1031 default:
1032 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
1033 }
1034 }
1035
1036 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)())
1037 {
1038 switch(cmd)
1039 {
1040 case SSL_CTRL_SET_MSG_CALLBACK:
1041 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1042 return 1;
1043
1044 default:
1045 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
1046 }
1047 }
1048
1049 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1050 {
1051 long l;
1052
1053 l=a->id-b->id;
1054 if (l == 0L)
1055 return(0);
1056 else
1057 return((l > 0)?1:-1);
1058 }
1059
1060 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1061 const SSL_CIPHER * const *bp)
1062 {
1063 long l;
1064
1065 l=(*ap)->id-(*bp)->id;
1066 if (l == 0L)
1067 return(0);
1068 else
1069 return((l > 0)?1:-1);
1070 }
1071
1072 /** return a STACK of the ciphers available for the SSL and in order of
1073 * preference */
1074 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(SSL *s)
1075 {
1076 if (s != NULL)
1077 {
1078 if (s->cipher_list != NULL)
1079 {
1080 return(s->cipher_list);
1081 }
1082 else if ((s->ctx != NULL) &&
1083 (s->ctx->cipher_list != NULL))
1084 {
1085 return(s->ctx->cipher_list);
1086 }
1087 }
1088 return(NULL);
1089 }
1090
1091 /** return a STACK of the ciphers available for the SSL and in order of
1092 * algorithm id */
1093 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1094 {
1095 if (s != NULL)
1096 {
1097 if (s->cipher_list_by_id != NULL)
1098 {
1099 return(s->cipher_list_by_id);
1100 }
1101 else if ((s->ctx != NULL) &&
1102 (s->ctx->cipher_list_by_id != NULL))
1103 {
1104 return(s->ctx->cipher_list_by_id);
1105 }
1106 }
1107 return(NULL);
1108 }
1109
1110 /** The old interface to get the same thing as SSL_get_ciphers() */
1111 const char *SSL_get_cipher_list(SSL *s,int n)
1112 {
1113 SSL_CIPHER *c;
1114 STACK_OF(SSL_CIPHER) *sk;
1115
1116 if (s == NULL) return(NULL);
1117 sk=SSL_get_ciphers(s);
1118 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1119 return(NULL);
1120 c=sk_SSL_CIPHER_value(sk,n);
1121 if (c == NULL) return(NULL);
1122 return(c->name);
1123 }
1124
1125 /** specify the ciphers to be used by default by the SSL_CTX */
1126 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1127 {
1128 STACK_OF(SSL_CIPHER) *sk;
1129
1130 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1131 &ctx->cipher_list_by_id,str);
1132 /* XXXX */
1133 return((sk == NULL)?0:1);
1134 }
1135
1136 /** specify the ciphers to be used by the SSL */
1137 int SSL_set_cipher_list(SSL *s,const char *str)
1138 {
1139 STACK_OF(SSL_CIPHER) *sk;
1140
1141 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1142 &s->cipher_list_by_id,str);
1143 /* XXXX */
1144 return((sk == NULL)?0:1);
1145 }
1146
1147 /* works well for SSLv2, not so good for SSLv3 */
1148 char *SSL_get_shared_ciphers(SSL *s,char *buf,int len)
1149 {
1150 char *p;
1151 const char *cp;
1152 STACK_OF(SSL_CIPHER) *sk;
1153 SSL_CIPHER *c;
1154 int i;
1155
1156 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1157 (len < 2))
1158 return(NULL);
1159
1160 p=buf;
1161 sk=s->session->ciphers;
1162 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1163 {
1164 /* Decrement for either the ':' or a '\0' */
1165 len--;
1166 c=sk_SSL_CIPHER_value(sk,i);
1167 for (cp=c->name; *cp; )
1168 {
1169 if (len-- == 0)
1170 {
1171 *p='\0';
1172 return(buf);
1173 }
1174 else
1175 *(p++)= *(cp++);
1176 }
1177 *(p++)=':';
1178 }
1179 p[-1]='\0';
1180 return(buf);
1181 }
1182
1183 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p)
1184 {
1185 int i,j=0;
1186 SSL_CIPHER *c;
1187 unsigned char *q;
1188 #ifndef OPENSSL_NO_KRB5
1189 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1190 #endif /* OPENSSL_NO_KRB5 */
1191
1192 if (sk == NULL) return(0);
1193 q=p;
1194
1195 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1196 {
1197 c=sk_SSL_CIPHER_value(sk,i);
1198 #ifndef OPENSSL_NO_KRB5
1199 if ((c->algorithms & SSL_KRB5) && nokrb5)
1200 continue;
1201 #endif /* OPENSSL_NO_KRB5 */
1202 j=ssl_put_cipher_by_char(s,c,p);
1203 p+=j;
1204 }
1205 return(p-q);
1206 }
1207
1208 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1209 STACK_OF(SSL_CIPHER) **skp)
1210 {
1211 SSL_CIPHER *c;
1212 STACK_OF(SSL_CIPHER) *sk;
1213 int i,n;
1214
1215 n=ssl_put_cipher_by_char(s,NULL,NULL);
1216 if ((num%n) != 0)
1217 {
1218 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1219 return(NULL);
1220 }
1221 if ((skp == NULL) || (*skp == NULL))
1222 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1223 else
1224 {
1225 sk= *skp;
1226 sk_SSL_CIPHER_zero(sk);
1227 }
1228
1229 for (i=0; i<num; i+=n)
1230 {
1231 c=ssl_get_cipher_by_char(s,p);
1232 p+=n;
1233 if (c != NULL)
1234 {
1235 if (!sk_SSL_CIPHER_push(sk,c))
1236 {
1237 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1238 goto err;
1239 }
1240 }
1241 }
1242
1243 if (skp != NULL)
1244 *skp=sk;
1245 return(sk);
1246 err:
1247 if ((skp == NULL) || (*skp == NULL))
1248 sk_SSL_CIPHER_free(sk);
1249 return(NULL);
1250 }
1251
1252 unsigned long SSL_SESSION_hash(SSL_SESSION *a)
1253 {
1254 unsigned long l;
1255
1256 l=(unsigned long)
1257 ((unsigned int) a->session_id[0] )|
1258 ((unsigned int) a->session_id[1]<< 8L)|
1259 ((unsigned long)a->session_id[2]<<16L)|
1260 ((unsigned long)a->session_id[3]<<24L);
1261 return(l);
1262 }
1263
1264 /* NB: If this function (or indeed the hash function which uses a sort of
1265 * coarser function than this one) is changed, ensure
1266 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1267 * able to construct an SSL_SESSION that will collide with any existing session
1268 * with a matching session ID. */
1269 int SSL_SESSION_cmp(SSL_SESSION *a,SSL_SESSION *b)
1270 {
1271 if (a->ssl_version != b->ssl_version)
1272 return(1);
1273 if (a->session_id_length != b->session_id_length)
1274 return(1);
1275 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1276 }
1277
1278 /* These wrapper functions should remain rather than redeclaring
1279 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1280 * variable. The reason is that the functions aren't static, they're exposed via
1281 * ssl.h. */
1282 static IMPLEMENT_LHASH_HASH_FN(SSL_SESSION_hash, SSL_SESSION *)
1283 static IMPLEMENT_LHASH_COMP_FN(SSL_SESSION_cmp, SSL_SESSION *)
1284
1285 SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
1286 {
1287 SSL_CTX *ret=NULL;
1288
1289 if (meth == NULL)
1290 {
1291 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1292 return(NULL);
1293 }
1294
1295 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1296 {
1297 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1298 goto err;
1299 }
1300 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1301 if (ret == NULL)
1302 goto err;
1303
1304 memset(ret,0,sizeof(SSL_CTX));
1305
1306 ret->method=meth;
1307
1308 ret->cert_store=NULL;
1309 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1310 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1311 ret->session_cache_head=NULL;
1312 ret->session_cache_tail=NULL;
1313
1314 /* We take the system default */
1315 ret->session_timeout=meth->get_timeout();
1316
1317 ret->new_session_cb=0;
1318 ret->remove_session_cb=0;
1319 ret->get_session_cb=0;
1320 ret->generate_session_id=0;
1321
1322 memset((char *)&ret->stats,0,sizeof(ret->stats));
1323
1324 ret->references=1;
1325 ret->quiet_shutdown=0;
1326
1327 /* ret->cipher=NULL;*/
1328 /* ret->s2->challenge=NULL;
1329 ret->master_key=NULL;
1330 ret->key_arg=NULL;
1331 ret->s2->conn_id=NULL; */
1332
1333 ret->info_callback=NULL;
1334
1335 ret->app_verify_callback=0;
1336 ret->app_verify_arg=NULL;
1337
1338 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1339 ret->read_ahead=0;
1340 ret->msg_callback=0;
1341 ret->msg_callback_arg=NULL;
1342 ret->verify_mode=SSL_VERIFY_NONE;
1343 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1344 ret->sid_ctx_length=0;
1345 ret->default_verify_callback=NULL;
1346 if ((ret->cert=ssl_cert_new()) == NULL)
1347 goto err;
1348
1349 ret->default_passwd_callback=0;
1350 ret->default_passwd_callback_userdata=NULL;
1351 ret->client_cert_cb=0;
1352
1353 ret->sessions=lh_new(LHASH_HASH_FN(SSL_SESSION_hash),
1354 LHASH_COMP_FN(SSL_SESSION_cmp));
1355 if (ret->sessions == NULL) goto err;
1356 ret->cert_store=X509_STORE_new();
1357 if (ret->cert_store == NULL) goto err;
1358
1359 ssl_create_cipher_list(ret->method,
1360 &ret->cipher_list,&ret->cipher_list_by_id,
1361 SSL_DEFAULT_CIPHER_LIST);
1362 if (ret->cipher_list == NULL
1363 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1364 {
1365 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1366 goto err2;
1367 }
1368
1369 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1370 {
1371 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1372 goto err2;
1373 }
1374 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1375 {
1376 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1377 goto err2;
1378 }
1379 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1380 {
1381 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1382 goto err2;
1383 }
1384
1385 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1386 goto err;
1387
1388 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1389
1390 ret->extra_certs=NULL;
1391 ret->comp_methods=SSL_COMP_get_compression_methods();
1392
1393 return(ret);
1394 err:
1395 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1396 err2:
1397 if (ret != NULL) SSL_CTX_free(ret);
1398 return(NULL);
1399 }
1400
1401 #if 0
1402 static void SSL_COMP_free(SSL_COMP *comp)
1403 { OPENSSL_free(comp); }
1404 #endif
1405
1406 void SSL_CTX_free(SSL_CTX *a)
1407 {
1408 int i;
1409
1410 if (a == NULL) return;
1411
1412 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1413 #ifdef REF_PRINT
1414 REF_PRINT("SSL_CTX",a);
1415 #endif
1416 if (i > 0) return;
1417 #ifdef REF_CHECK
1418 if (i < 0)
1419 {
1420 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1421 abort(); /* ok */
1422 }
1423 #endif
1424
1425 /*
1426 * Free internal session cache. However: the remove_cb() may reference
1427 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1428 * after the sessions were flushed.
1429 * As the ex_data handling routines might also touch the session cache,
1430 * the most secure solution seems to be: empty (flush) the cache, then
1431 * free ex_data, then finally free the cache.
1432 * (See ticket [openssl.org #212].)
1433 */
1434 if (a->sessions != NULL)
1435 SSL_CTX_flush_sessions(a,0);
1436
1437 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1438
1439 if (a->sessions != NULL)
1440 lh_free(a->sessions);
1441
1442 if (a->cert_store != NULL)
1443 X509_STORE_free(a->cert_store);
1444 if (a->cipher_list != NULL)
1445 sk_SSL_CIPHER_free(a->cipher_list);
1446 if (a->cipher_list_by_id != NULL)
1447 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1448 if (a->cert != NULL)
1449 ssl_cert_free(a->cert);
1450 if (a->client_CA != NULL)
1451 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1452 if (a->extra_certs != NULL)
1453 sk_X509_pop_free(a->extra_certs,X509_free);
1454 #if 0 /* This should never be done, since it removes a global database */
1455 if (a->comp_methods != NULL)
1456 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1457 #else
1458 a->comp_methods = NULL;
1459 #endif
1460 OPENSSL_free(a);
1461 }
1462
1463 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1464 {
1465 ctx->default_passwd_callback=cb;
1466 }
1467
1468 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1469 {
1470 ctx->default_passwd_callback_userdata=u;
1471 }
1472
1473 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
1474 {
1475 ctx->app_verify_callback=cb;
1476 ctx->app_verify_arg=arg;
1477 }
1478
1479 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1480 {
1481 ctx->verify_mode=mode;
1482 ctx->default_verify_callback=cb;
1483 }
1484
1485 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
1486 {
1487 ctx->verify_depth=depth;
1488 }
1489
1490 void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
1491 {
1492 CERT_PKEY *cpk;
1493 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1494 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1495 int rsa_tmp_export,dh_tmp_export,kl;
1496 unsigned long mask,emask;
1497
1498 if (c == NULL) return;
1499
1500 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1501
1502 #ifndef OPENSSL_NO_RSA
1503 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
1504 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
1505 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
1506 #else
1507 rsa_tmp=rsa_tmp_export=0;
1508 #endif
1509 #ifndef OPENSSL_NO_DH
1510 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
1511 dh_tmp_export=(c->dh_tmp_cb != NULL ||
1512 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
1513 #else
1514 dh_tmp=dh_tmp_export=0;
1515 #endif
1516
1517 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1518 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
1519 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1520 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1521 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1522 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1523 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1524 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1525 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1526 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1527 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1528 /* FIX THIS EAY EAY EAY */
1529 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1530 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1531
1532 mask=0;
1533 emask=0;
1534
1535 #ifdef CIPHER_DEBUG
1536 printf("rt=%d rte=%d dht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1537 rsa_tmp,rsa_tmp_export,dh_tmp,
1538 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1539 #endif
1540
1541 if (rsa_enc || (rsa_tmp && rsa_sign))
1542 mask|=SSL_kRSA;
1543 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
1544 emask|=SSL_kRSA;
1545
1546 #if 0
1547 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1548 if ( (dh_tmp || dh_rsa || dh_dsa) &&
1549 (rsa_enc || rsa_sign || dsa_sign))
1550 mask|=SSL_kEDH;
1551 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1552 (rsa_enc || rsa_sign || dsa_sign))
1553 emask|=SSL_kEDH;
1554 #endif
1555
1556 if (dh_tmp_export)
1557 emask|=SSL_kEDH;
1558
1559 if (dh_tmp)
1560 mask|=SSL_kEDH;
1561
1562 if (dh_rsa) mask|=SSL_kDHr;
1563 if (dh_rsa_export) emask|=SSL_kDHr;
1564
1565 if (dh_dsa) mask|=SSL_kDHd;
1566 if (dh_dsa_export) emask|=SSL_kDHd;
1567
1568 if (rsa_enc || rsa_sign)
1569 {
1570 mask|=SSL_aRSA;
1571 emask|=SSL_aRSA;
1572 }
1573
1574 if (dsa_sign)
1575 {
1576 mask|=SSL_aDSS;
1577 emask|=SSL_aDSS;
1578 }
1579
1580 mask|=SSL_aNULL;
1581 emask|=SSL_aNULL;
1582
1583 #ifndef OPENSSL_NO_KRB5
1584 mask|=SSL_kKRB5|SSL_aKRB5;
1585 emask|=SSL_kKRB5|SSL_aKRB5;
1586 #endif
1587
1588 c->mask=mask;
1589 c->export_mask=emask;
1590 c->valid=1;
1591 }
1592
1593 /* THIS NEEDS CLEANING UP */
1594 X509 *ssl_get_server_send_cert(SSL *s)
1595 {
1596 unsigned long alg,mask,kalg;
1597 CERT *c;
1598 int i,is_export;
1599
1600 c=s->cert;
1601 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
1602 alg=s->s3->tmp.new_cipher->algorithms;
1603 is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
1604 mask=is_export?c->export_mask:c->mask;
1605 kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK);
1606
1607 if (kalg & SSL_kDHr)
1608 i=SSL_PKEY_DH_RSA;
1609 else if (kalg & SSL_kDHd)
1610 i=SSL_PKEY_DH_DSA;
1611 else if (kalg & SSL_aDSS)
1612 i=SSL_PKEY_DSA_SIGN;
1613 else if (kalg & SSL_aRSA)
1614 {
1615 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
1616 i=SSL_PKEY_RSA_SIGN;
1617 else
1618 i=SSL_PKEY_RSA_ENC;
1619 }
1620 else if (kalg & SSL_aKRB5)
1621 {
1622 /* VRS something else here? */
1623 return(NULL);
1624 }
1625 else /* if (kalg & SSL_aNULL) */
1626 {
1627 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR);
1628 return(NULL);
1629 }
1630 if (c->pkeys[i].x509 == NULL) return(NULL);
1631 return(c->pkeys[i].x509);
1632 }
1633
1634 EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher)
1635 {
1636 unsigned long alg;
1637 CERT *c;
1638
1639 alg=cipher->algorithms;
1640 c=s->cert;
1641
1642 if ((alg & SSL_aDSS) &&
1643 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
1644 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
1645 else if (alg & SSL_aRSA)
1646 {
1647 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
1648 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
1649 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
1650 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
1651 else
1652 return(NULL);
1653 }
1654 else /* if (alg & SSL_aNULL) */
1655 {
1656 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
1657 return(NULL);
1658 }
1659 }
1660
1661 void ssl_update_cache(SSL *s,int mode)
1662 {
1663 int i;
1664
1665 /* If the session_id_length is 0, we are not supposed to cache it,
1666 * and it would be rather hard to do anyway :-) */
1667 if (s->session->session_id_length == 0) return;
1668
1669 i=s->ctx->session_cache_mode;
1670 if ((i & mode) && (!s->hit)
1671 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
1672 || SSL_CTX_add_session(s->ctx,s->session))
1673 && (s->ctx->new_session_cb != NULL))
1674 {
1675 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
1676 if (!s->ctx->new_session_cb(s,s->session))
1677 SSL_SESSION_free(s->session);
1678 }
1679
1680 /* auto flush every 255 connections */
1681 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
1682 ((i & mode) == mode))
1683 {
1684 if ( (((mode & SSL_SESS_CACHE_CLIENT)
1685 ?s->ctx->stats.sess_connect_good
1686 :s->ctx->stats.sess_accept_good) & 0xff) == 0xff)
1687 {
1688 SSL_CTX_flush_sessions(s->ctx,time(NULL));
1689 }
1690 }
1691 }
1692
1693 SSL_METHOD *SSL_get_ssl_method(SSL *s)
1694 {
1695 return(s->method);
1696 }
1697
1698 int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth)
1699 {
1700 int conn= -1;
1701 int ret=1;
1702
1703 if (s->method != meth)
1704 {
1705 if (s->handshake_func != NULL)
1706 conn=(s->handshake_func == s->method->ssl_connect);
1707
1708 if (s->method->version == meth->version)
1709 s->method=meth;
1710 else
1711 {
1712 s->method->ssl_free(s);
1713 s->method=meth;
1714 ret=s->method->ssl_new(s);
1715 }
1716
1717 if (conn == 1)
1718 s->handshake_func=meth->ssl_connect;
1719 else if (conn == 0)
1720 s->handshake_func=meth->ssl_accept;
1721 }
1722 return(ret);
1723 }
1724
1725 int SSL_get_error(SSL *s,int i)
1726 {
1727 int reason;
1728 unsigned long l;
1729 BIO *bio;
1730
1731 if (i > 0) return(SSL_ERROR_NONE);
1732
1733 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
1734 * etc, where we do encode the error */
1735 if ((l=ERR_peek_error()) != 0)
1736 {
1737 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
1738 return(SSL_ERROR_SYSCALL);
1739 else
1740 return(SSL_ERROR_SSL);
1741 }
1742
1743 if ((i < 0) && SSL_want_read(s))
1744 {
1745 bio=SSL_get_rbio(s);
1746 if (BIO_should_read(bio))
1747 return(SSL_ERROR_WANT_READ);
1748 else if (BIO_should_write(bio))
1749 /* This one doesn't make too much sense ... We never try
1750 * to write to the rbio, and an application program where
1751 * rbio and wbio are separate couldn't even know what it
1752 * should wait for.
1753 * However if we ever set s->rwstate incorrectly
1754 * (so that we have SSL_want_read(s) instead of
1755 * SSL_want_write(s)) and rbio and wbio *are* the same,
1756 * this test works around that bug; so it might be safer
1757 * to keep it. */
1758 return(SSL_ERROR_WANT_WRITE);
1759 else if (BIO_should_io_special(bio))
1760 {
1761 reason=BIO_get_retry_reason(bio);
1762 if (reason == BIO_RR_CONNECT)
1763 return(SSL_ERROR_WANT_CONNECT);
1764 else if (reason == BIO_RR_ACCEPT)
1765 return(SSL_ERROR_WANT_ACCEPT);
1766 else
1767 return(SSL_ERROR_SYSCALL); /* unknown */
1768 }
1769 }
1770
1771 if ((i < 0) && SSL_want_write(s))
1772 {
1773 bio=SSL_get_wbio(s);
1774 if (BIO_should_write(bio))
1775 return(SSL_ERROR_WANT_WRITE);
1776 else if (BIO_should_read(bio))
1777 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
1778 return(SSL_ERROR_WANT_READ);
1779 else if (BIO_should_io_special(bio))
1780 {
1781 reason=BIO_get_retry_reason(bio);
1782 if (reason == BIO_RR_CONNECT)
1783 return(SSL_ERROR_WANT_CONNECT);
1784 else if (reason == BIO_RR_ACCEPT)
1785 return(SSL_ERROR_WANT_ACCEPT);
1786 else
1787 return(SSL_ERROR_SYSCALL);
1788 }
1789 }
1790 if ((i < 0) && SSL_want_x509_lookup(s))
1791 {
1792 return(SSL_ERROR_WANT_X509_LOOKUP);
1793 }
1794
1795 if (i == 0)
1796 {
1797 if (s->version == SSL2_VERSION)
1798 {
1799 /* assume it is the socket being closed */
1800 return(SSL_ERROR_ZERO_RETURN);
1801 }
1802 else
1803 {
1804 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
1805 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
1806 return(SSL_ERROR_ZERO_RETURN);
1807 }
1808 }
1809 return(SSL_ERROR_SYSCALL);
1810 }
1811
1812 int SSL_do_handshake(SSL *s)
1813 {
1814 int ret=1;
1815
1816 if (s->handshake_func == NULL)
1817 {
1818 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
1819 return(-1);
1820 }
1821
1822 s->method->ssl_renegotiate_check(s);
1823
1824 if (SSL_in_init(s) || SSL_in_before(s))
1825 {
1826 ret=s->handshake_func(s);
1827 }
1828 return(ret);
1829 }
1830
1831 /* For the next 2 functions, SSL_clear() sets shutdown and so
1832 * one of these calls will reset it */
1833 void SSL_set_accept_state(SSL *s)
1834 {
1835 s->server=1;
1836 s->shutdown=0;
1837 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
1838 s->handshake_func=s->method->ssl_accept;
1839 /* clear the current cipher */
1840 ssl_clear_cipher_ctx(s);
1841 }
1842
1843 void SSL_set_connect_state(SSL *s)
1844 {
1845 s->server=0;
1846 s->shutdown=0;
1847 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
1848 s->handshake_func=s->method->ssl_connect;
1849 /* clear the current cipher */
1850 ssl_clear_cipher_ctx(s);
1851 }
1852
1853 int ssl_undefined_function(SSL *s)
1854 {
1855 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1856 return(0);
1857 }
1858
1859 SSL_METHOD *ssl_bad_method(int ver)
1860 {
1861 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1862 return(NULL);
1863 }
1864
1865 const char *SSL_get_version(SSL *s)
1866 {
1867 if (s->version == TLS1_VERSION)
1868 return("TLSv1");
1869 else if (s->version == SSL3_VERSION)
1870 return("SSLv3");
1871 else if (s->version == SSL2_VERSION)
1872 return("SSLv2");
1873 else
1874 return("unknown");
1875 }
1876
1877 SSL *SSL_dup(SSL *s)
1878 {
1879 STACK_OF(X509_NAME) *sk;
1880 X509_NAME *xn;
1881 SSL *ret;
1882 int i;
1883
1884 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
1885 return(NULL);
1886
1887 ret->version = s->version;
1888 ret->type = s->type;
1889 ret->method = s->method;
1890
1891 if (s->session != NULL)
1892 {
1893 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
1894 SSL_copy_session_id(ret,s);
1895 }
1896 else
1897 {
1898 /* No session has been established yet, so we have to expect
1899 * that s->cert or ret->cert will be changed later --
1900 * they should not both point to the same object,
1901 * and thus we can't use SSL_copy_session_id. */
1902
1903 ret->method->ssl_free(ret);
1904 ret->method = s->method;
1905 ret->method->ssl_new(ret);
1906
1907 if (s->cert != NULL)
1908 {
1909 if (ret->cert != NULL)
1910 {
1911 ssl_cert_free(ret->cert);
1912 }
1913 ret->cert = ssl_cert_dup(s->cert);
1914 if (ret->cert == NULL)
1915 goto err;
1916 }
1917
1918 SSL_set_session_id_context(ret,
1919 s->sid_ctx, s->sid_ctx_length);
1920 }
1921
1922 ret->options=s->options;
1923 ret->mode=s->mode;
1924 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
1925 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
1926 ret->msg_callback = s->msg_callback;
1927 ret->msg_callback_arg = s->msg_callback_arg;
1928 SSL_set_verify(ret,SSL_get_verify_mode(s),
1929 SSL_get_verify_callback(s));
1930 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
1931 ret->generate_session_id = s->generate_session_id;
1932
1933 SSL_set_info_callback(ret,SSL_get_info_callback(s));
1934
1935 ret->debug=s->debug;
1936
1937 /* copy app data, a little dangerous perhaps */
1938 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
1939 goto err;
1940
1941 /* setup rbio, and wbio */
1942 if (s->rbio != NULL)
1943 {
1944 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
1945 goto err;
1946 }
1947 if (s->wbio != NULL)
1948 {
1949 if (s->wbio != s->rbio)
1950 {
1951 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
1952 goto err;
1953 }
1954 else
1955 ret->wbio=ret->rbio;
1956 }
1957 ret->rwstate = s->rwstate;
1958 ret->in_handshake = s->in_handshake;
1959 ret->handshake_func = s->handshake_func;
1960 ret->server = s->server;
1961 ret->new_session = s->new_session;
1962 ret->quiet_shutdown = s->quiet_shutdown;
1963 ret->shutdown=s->shutdown;
1964 ret->state=s->state; /* SSL_dup does not really work at any state, though */
1965 ret->rstate=s->rstate;
1966 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
1967 ret->hit=s->hit;
1968 ret->purpose=s->purpose;
1969 ret->trust=s->trust;
1970
1971 /* dup the cipher_list and cipher_list_by_id stacks */
1972 if (s->cipher_list != NULL)
1973 {
1974 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
1975 goto err;
1976 }
1977 if (s->cipher_list_by_id != NULL)
1978 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
1979 == NULL)
1980 goto err;
1981
1982 /* Dup the client_CA list */
1983 if (s->client_CA != NULL)
1984 {
1985 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
1986 ret->client_CA=sk;
1987 for (i=0; i<sk_X509_NAME_num(sk); i++)
1988 {
1989 xn=sk_X509_NAME_value(sk,i);
1990 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
1991 {
1992 X509_NAME_free(xn);
1993 goto err;
1994 }
1995 }
1996 }
1997
1998 if (0)
1999 {
2000 err:
2001 if (ret != NULL) SSL_free(ret);
2002 ret=NULL;
2003 }
2004 return(ret);
2005 }
2006
2007 void ssl_clear_cipher_ctx(SSL *s)
2008 {
2009 if (s->enc_read_ctx != NULL)
2010 {
2011 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2012 OPENSSL_free(s->enc_read_ctx);
2013 s->enc_read_ctx=NULL;
2014 }
2015 if (s->enc_write_ctx != NULL)
2016 {
2017 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2018 OPENSSL_free(s->enc_write_ctx);
2019 s->enc_write_ctx=NULL;
2020 }
2021 if (s->expand != NULL)
2022 {
2023 COMP_CTX_free(s->expand);
2024 s->expand=NULL;
2025 }
2026 if (s->compress != NULL)
2027 {
2028 COMP_CTX_free(s->compress);
2029 s->compress=NULL;
2030 }
2031 }
2032
2033 /* Fix this function so that it takes an optional type parameter */
2034 X509 *SSL_get_certificate(SSL *s)
2035 {
2036 if (s->cert != NULL)
2037 return(s->cert->key->x509);
2038 else
2039 return(NULL);
2040 }
2041
2042 /* Fix this function so that it takes an optional type parameter */
2043 EVP_PKEY *SSL_get_privatekey(SSL *s)
2044 {
2045 if (s->cert != NULL)
2046 return(s->cert->key->privatekey);
2047 else
2048 return(NULL);
2049 }
2050
2051 SSL_CIPHER *SSL_get_current_cipher(SSL *s)
2052 {
2053 if ((s->session != NULL) && (s->session->cipher != NULL))
2054 return(s->session->cipher);
2055 return(NULL);
2056 }
2057
2058 int ssl_init_wbio_buffer(SSL *s,int push)
2059 {
2060 BIO *bbio;
2061
2062 if (s->bbio == NULL)
2063 {
2064 bbio=BIO_new(BIO_f_buffer());
2065 if (bbio == NULL) return(0);
2066 s->bbio=bbio;
2067 }
2068 else
2069 {
2070 bbio=s->bbio;
2071 if (s->bbio == s->wbio)
2072 s->wbio=BIO_pop(s->wbio);
2073 }
2074 (void)BIO_reset(bbio);
2075 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2076 if (!BIO_set_read_buffer_size(bbio,1))
2077 {
2078 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
2079 return(0);
2080 }
2081 if (push)
2082 {
2083 if (s->wbio != bbio)
2084 s->wbio=BIO_push(bbio,s->wbio);
2085 }
2086 else
2087 {
2088 if (s->wbio == bbio)
2089 s->wbio=BIO_pop(bbio);
2090 }
2091 return(1);
2092 }
2093
2094 void ssl_free_wbio_buffer(SSL *s)
2095 {
2096 if (s->bbio == NULL) return;
2097
2098 if (s->bbio == s->wbio)
2099 {
2100 /* remove buffering */
2101 s->wbio=BIO_pop(s->wbio);
2102 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
2103 assert(s->wbio != NULL);
2104 #endif
2105 }
2106 BIO_free(s->bbio);
2107 s->bbio=NULL;
2108 }
2109
2110 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
2111 {
2112 ctx->quiet_shutdown=mode;
2113 }
2114
2115 int SSL_CTX_get_quiet_shutdown(SSL_CTX *ctx)
2116 {
2117 return(ctx->quiet_shutdown);
2118 }
2119
2120 void SSL_set_quiet_shutdown(SSL *s,int mode)
2121 {
2122 s->quiet_shutdown=mode;
2123 }
2124
2125 int SSL_get_quiet_shutdown(SSL *s)
2126 {
2127 return(s->quiet_shutdown);
2128 }
2129
2130 void SSL_set_shutdown(SSL *s,int mode)
2131 {
2132 s->shutdown=mode;
2133 }
2134
2135 int SSL_get_shutdown(SSL *s)
2136 {
2137 return(s->shutdown);
2138 }
2139
2140 int SSL_version(SSL *s)
2141 {
2142 return(s->version);
2143 }
2144
2145 SSL_CTX *SSL_get_SSL_CTX(SSL *ssl)
2146 {
2147 return(ssl->ctx);
2148 }
2149
2150 #ifndef OPENSSL_NO_STDIO
2151 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2152 {
2153 return(X509_STORE_set_default_paths(ctx->cert_store));
2154 }
2155
2156 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2157 const char *CApath)
2158 {
2159 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2160 }
2161 #endif
2162
2163 void SSL_set_info_callback(SSL *ssl,
2164 void (*cb)(const SSL *ssl,int type,int val))
2165 {
2166 ssl->info_callback=cb;
2167 }
2168
2169 void (*SSL_get_info_callback(SSL *ssl))(const SSL *ssl,int type,int val)
2170 {
2171 return ssl->info_callback;
2172 }
2173
2174 int SSL_state(SSL *ssl)
2175 {
2176 return(ssl->state);
2177 }
2178
2179 void SSL_set_verify_result(SSL *ssl,long arg)
2180 {
2181 ssl->verify_result=arg;
2182 }
2183
2184 long SSL_get_verify_result(SSL *ssl)
2185 {
2186 return(ssl->verify_result);
2187 }
2188
2189 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2190 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2191 {
2192 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
2193 new_func, dup_func, free_func);
2194 }
2195
2196 int SSL_set_ex_data(SSL *s,int idx,void *arg)
2197 {
2198 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2199 }
2200
2201 void *SSL_get_ex_data(SSL *s,int idx)
2202 {
2203 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2204 }
2205
2206 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2207 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2208 {
2209 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
2210 new_func, dup_func, free_func);
2211 }
2212
2213 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
2214 {
2215 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2216 }
2217
2218 void *SSL_CTX_get_ex_data(SSL_CTX *s,int idx)
2219 {
2220 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2221 }
2222
2223 int ssl_ok(SSL *s)
2224 {
2225 return(1);
2226 }
2227
2228 X509_STORE *SSL_CTX_get_cert_store(SSL_CTX *ctx)
2229 {
2230 return(ctx->cert_store);
2231 }
2232
2233 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
2234 {
2235 if (ctx->cert_store != NULL)
2236 X509_STORE_free(ctx->cert_store);
2237 ctx->cert_store=store;
2238 }
2239
2240 int SSL_want(SSL *s)
2241 {
2242 return(s->rwstate);
2243 }
2244
2245 /*!
2246 * \brief Set the callback for generating temporary RSA keys.
2247 * \param ctx the SSL context.
2248 * \param cb the callback
2249 */
2250
2251 #ifndef OPENSSL_NO_RSA
2252 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
2253 int is_export,
2254 int keylength))
2255 {
2256 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2257 }
2258
2259 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
2260 int is_export,
2261 int keylength))
2262 {
2263 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2264 }
2265 #endif
2266
2267 #ifdef DOXYGEN
2268 /*!
2269 * \brief The RSA temporary key callback function.
2270 * \param ssl the SSL session.
2271 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
2272 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
2273 * of the required key in bits.
2274 * \return the temporary RSA key.
2275 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
2276 */
2277
2278 RSA *cb(SSL *ssl,int is_export,int keylength)
2279 {}
2280 #endif
2281
2282 /*!
2283 * \brief Set the callback for generating temporary DH keys.
2284 * \param ctx the SSL context.
2285 * \param dh the callback
2286 */
2287
2288 #ifndef OPENSSL_NO_DH
2289 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
2290 int keylength))
2291 {
2292 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2293 }
2294
2295 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
2296 int keylength))
2297 {
2298 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2299 }
2300 #endif
2301
2302
2303 void SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))
2304 {
2305 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)())cb);
2306 }
2307 void SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))
2308 {
2309 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)())cb);
2310 }
2311
2312
2313
2314 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
2315 #include "../crypto/bio/bss_file.c"
2316 #endif
2317
2318 IMPLEMENT_STACK_OF(SSL_CIPHER)
2319 IMPLEMENT_STACK_OF(SSL_COMP)
DragonFly BSD