Set s->read_ahead in SSL_new because SSL_clear no longer modifies it.
[openssl.git] / ssl / ssl_lib.c
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
62 #include <assert.h>
63 #include <stdio.h>
64 #include <openssl/objects.h>
65 #include <openssl/lhash.h>
66 #include <openssl/x509v3.h>
67 #include "ssl_locl.h"
68
69 const char *SSL_version_str=OPENSSL_VERSION_TEXT;
70
71 static STACK_OF(CRYPTO_EX_DATA_FUNCS) *ssl_meth=NULL;
72 static STACK_OF(CRYPTO_EX_DATA_FUNCS) *ssl_ctx_meth=NULL;
73 static int ssl_meth_num=0;
74 static int ssl_ctx_meth_num=0;
75
76 OPENSSL_GLOBAL SSL3_ENC_METHOD ssl3_undef_enc_method={
77         /* evil casts, but these functions are only called if there's a library bug */
78         (int (*)(SSL *,int))ssl_undefined_function,
79         (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
80         ssl_undefined_function,
81         (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
82         (int (*)(SSL*, int))ssl_undefined_function,
83         (int (*)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char*, int, unsigned char *))ssl_undefined_function
84         };
85
86 int SSL_clear(SSL *s)
87         {
88         int state;
89
90         if (s->method == NULL)
91                 {
92                 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
93                 return(0);
94                 }
95
96         s->error=0;
97         s->hit=0;
98         s->shutdown=0;
99
100 #if 0 /* Disabled since version 1.10 of this file (early return not
101        * needed because SSL_clear is not called when doing renegotiation) */
102         /* This is set if we are doing dynamic renegotiation so keep
103          * the old cipher.  It is sort of a SSL_clear_lite :-) */
104         if (s->new_session) return(1);
105 #else
106         if (s->new_session)
107                 {
108                 SSLerr(SSL_F_SSL_CLEAR,SSL_R_INTERNAL_ERROR);
109                 return 0;
110                 }
111 #endif
112
113         state=s->state; /* Keep to check if we throw away the session-id */
114         s->type=0;
115
116         s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
117
118         s->version=s->method->version;
119         s->client_version=s->version;
120         s->rwstate=SSL_NOTHING;
121         s->rstate=SSL_ST_READ_HEADER;
122 #if 0
123         s->read_ahead=s->ctx->read_ahead;
124 #endif
125
126         if (s->init_buf != NULL)
127                 {
128                 BUF_MEM_free(s->init_buf);
129                 s->init_buf=NULL;
130                 }
131
132         ssl_clear_cipher_ctx(s);
133
134         if (ssl_clear_bad_session(s))
135                 {
136                 SSL_SESSION_free(s->session);
137                 s->session=NULL;
138                 }
139
140         s->first_packet=0;
141
142 #if 1
143         /* Check to see if we were changed into a different method, if
144          * so, revert back if we are not doing session-id reuse. */
145         if ((s->session == NULL) && (s->method != s->ctx->method))
146                 {
147                 s->method->ssl_free(s);
148                 s->method=s->ctx->method;
149                 if (!s->method->ssl_new(s))
150                         return(0);
151                 }
152         else
153 #endif
154                 s->method->ssl_clear(s);
155         return(1);
156         }
157
158 /** Used to change an SSL_CTXs default SSL method type */
159 int SSL_CTX_set_ssl_version(SSL_CTX *ctx,SSL_METHOD *meth)
160         {
161         STACK_OF(SSL_CIPHER) *sk;
162
163         ctx->method=meth;
164
165         sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
166                 &(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST);
167         if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
168                 {
169                 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
170                 return(0);
171                 }
172         return(1);
173         }
174
175 SSL *SSL_new(SSL_CTX *ctx)
176         {
177         SSL *s;
178
179         if (ctx == NULL)
180                 {
181                 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
182                 return(NULL);
183                 }
184         if (ctx->method == NULL)
185                 {
186                 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
187                 return(NULL);
188                 }
189
190         s=(SSL *)OPENSSL_malloc(sizeof(SSL));
191         if (s == NULL) goto err;
192         memset(s,0,sizeof(SSL));
193
194         if (ctx->cert != NULL)
195                 {
196                 /* Earlier library versions used to copy the pointer to
197                  * the CERT, not its contents; only when setting new
198                  * parameters for the per-SSL copy, ssl_cert_new would be
199                  * called (and the direct reference to the per-SSL_CTX
200                  * settings would be lost, but those still were indirectly
201                  * accessed for various purposes, and for that reason they
202                  * used to be known as s->ctx->default_cert).
203                  * Now we don't look at the SSL_CTX's CERT after having
204                  * duplicated it once. */
205
206                 s->cert = ssl_cert_dup(ctx->cert);
207                 if (s->cert == NULL)
208                         goto err;
209                 }
210         else
211                 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
212         s->sid_ctx_length=ctx->sid_ctx_length;
213         memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
214         s->verify_mode=ctx->verify_mode;
215         s->verify_depth=ctx->verify_depth;
216         s->verify_callback=ctx->default_verify_callback;
217         s->purpose = ctx->purpose;
218         s->trust = ctx->trust;
219         CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
220         s->ctx=ctx;
221
222         s->verify_result=X509_V_OK;
223
224         s->method=ctx->method;
225
226         if (!s->method->ssl_new(s))
227                 goto err;
228
229         s->quiet_shutdown=ctx->quiet_shutdown;
230         s->references=1;
231         s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
232         s->options=ctx->options;
233         s->mode=ctx->mode;
234         s->read_ahead=ctx->read_ahead; /* used to happen in SSL_clear */
235         SSL_clear(s);
236
237         CRYPTO_new_ex_data(ssl_meth,s,&s->ex_data);
238
239         return(s);
240 err:
241         if (s != NULL)
242                 {
243                 if (s->cert != NULL)
244                         ssl_cert_free(s->cert);
245                 if (s->ctx != NULL)
246                         SSL_CTX_free(s->ctx); /* decrement reference count */
247                 OPENSSL_free(s);
248                 }
249         SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
250         return(NULL);
251         }
252
253 int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
254                                    unsigned int sid_ctx_len)
255     {
256     if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
257         {
258         SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
259         return 0;
260         }
261     ctx->sid_ctx_length=sid_ctx_len;
262     memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
263
264     return 1;
265     }
266
267 int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
268                                unsigned int sid_ctx_len)
269     {
270     if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
271         {
272         SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
273         return 0;
274         }
275     ssl->sid_ctx_length=sid_ctx_len;
276     memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
277
278     return 1;
279     }
280
281 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
282 {
283         if(X509_PURPOSE_get_by_id(purpose) == -1) {
284                 SSLerr(SSL_F_SSL_CTX_SET_PURPOSE, SSL_R_INVALID_PURPOSE);
285                 return 0;
286         }
287         s->purpose = purpose;
288         return 1;
289 }
290
291 int SSL_set_purpose(SSL *s, int purpose)
292 {
293         if(X509_PURPOSE_get_by_id(purpose) == -1) {
294                 SSLerr(SSL_F_SSL_SET_PURPOSE, SSL_R_INVALID_PURPOSE);
295                 return 0;
296         }
297         s->purpose = purpose;
298         return 1;
299 }
300         
301 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
302 {
303         if(X509_TRUST_get_by_id(trust) == -1) {
304                 SSLerr(SSL_F_SSL_CTX_SET_TRUST, SSL_R_INVALID_TRUST);
305                 return 0;
306         }
307         s->trust = trust;
308         return 1;
309 }
310
311 int SSL_set_trust(SSL *s, int trust)
312 {
313         if(X509_TRUST_get_by_id(trust) == -1) {
314                 SSLerr(SSL_F_SSL_SET_TRUST, SSL_R_INVALID_TRUST);
315                 return 0;
316         }
317         s->trust = trust;
318         return 1;
319 }
320
321 void SSL_free(SSL *s)
322         {
323         int i;
324
325         if(s == NULL)
326             return;
327
328         i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
329 #ifdef REF_PRINT
330         REF_PRINT("SSL",s);
331 #endif
332         if (i > 0) return;
333 #ifdef REF_CHECK
334         if (i < 0)
335                 {
336                 fprintf(stderr,"SSL_free, bad reference count\n");
337                 abort(); /* ok */
338                 }
339 #endif
340
341         CRYPTO_free_ex_data(ssl_meth,(char *)s,&s->ex_data);
342
343         if (s->bbio != NULL)
344                 {
345                 /* If the buffering BIO is in place, pop it off */
346                 if (s->bbio == s->wbio)
347                         {
348                         s->wbio=BIO_pop(s->wbio);
349                         }
350                 BIO_free(s->bbio);
351                 s->bbio=NULL;
352                 }
353         if (s->rbio != NULL)
354                 BIO_free_all(s->rbio);
355         if ((s->wbio != NULL) && (s->wbio != s->rbio))
356                 BIO_free_all(s->wbio);
357
358         if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
359
360         /* add extra stuff */
361         if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
362         if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
363
364         /* Make the next call work :-) */
365         if (s->session != NULL)
366                 {
367                 ssl_clear_bad_session(s);
368                 SSL_SESSION_free(s->session);
369                 }
370
371         ssl_clear_cipher_ctx(s);
372
373         if (s->cert != NULL) ssl_cert_free(s->cert);
374         /* Free up if allocated */
375
376         if (s->ctx) SSL_CTX_free(s->ctx);
377
378         if (s->client_CA != NULL)
379                 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
380
381         if (s->method != NULL) s->method->ssl_free(s);
382
383         OPENSSL_free(s);
384         }
385
386 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
387         {
388         /* If the output buffering BIO is still in place, remove it
389          */
390         if (s->bbio != NULL)
391                 {
392                 if (s->wbio == s->bbio)
393                         {
394                         s->wbio=s->wbio->next_bio;
395                         s->bbio->next_bio=NULL;
396                         }
397                 }
398         if ((s->rbio != NULL) && (s->rbio != rbio))
399                 BIO_free_all(s->rbio);
400         if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
401                 BIO_free_all(s->wbio);
402         s->rbio=rbio;
403         s->wbio=wbio;
404         }
405
406 BIO *SSL_get_rbio(SSL *s)
407         { return(s->rbio); }
408
409 BIO *SSL_get_wbio(SSL *s)
410         { return(s->wbio); }
411
412 int SSL_get_fd(SSL *s)
413         {
414         int ret= -1;
415         BIO *b,*r;
416
417         b=SSL_get_rbio(s);
418         r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
419         if (r != NULL)
420                 BIO_get_fd(r,&ret);
421         return(ret);
422         }
423
424 #ifndef NO_SOCK
425 int SSL_set_fd(SSL *s,int fd)
426         {
427         int ret=0;
428         BIO *bio=NULL;
429
430         bio=BIO_new(BIO_s_socket());
431
432         if (bio == NULL)
433                 {
434                 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
435                 goto err;
436                 }
437         BIO_set_fd(bio,fd,BIO_NOCLOSE);
438         SSL_set_bio(s,bio,bio);
439         ret=1;
440 err:
441         return(ret);
442         }
443
444 int SSL_set_wfd(SSL *s,int fd)
445         {
446         int ret=0;
447         BIO *bio=NULL;
448
449         if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
450                 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
451                 {
452                 bio=BIO_new(BIO_s_socket());
453
454                 if (bio == NULL)
455                         { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
456                 BIO_set_fd(bio,fd,BIO_NOCLOSE);
457                 SSL_set_bio(s,SSL_get_rbio(s),bio);
458                 }
459         else
460                 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
461         ret=1;
462 err:
463         return(ret);
464         }
465
466 int SSL_set_rfd(SSL *s,int fd)
467         {
468         int ret=0;
469         BIO *bio=NULL;
470
471         if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
472                 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
473                 {
474                 bio=BIO_new(BIO_s_socket());
475
476                 if (bio == NULL)
477                         {
478                         SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
479                         goto err;
480                         }
481                 BIO_set_fd(bio,fd,BIO_NOCLOSE);
482                 SSL_set_bio(s,bio,SSL_get_wbio(s));
483                 }
484         else
485                 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
486         ret=1;
487 err:
488         return(ret);
489         }
490 #endif
491
492
493 /* return length of latest Finished message we sent, copy to 'buf' */
494 size_t SSL_get_finished(SSL *s, void *buf, size_t count)
495         {
496         size_t ret = 0;
497         
498         if (s->s3 != NULL)
499                 {
500                 ret = s->s3->tmp.finish_md_len;
501                 if (count > ret)
502                         count = ret;
503                 memcpy(buf, s->s3->tmp.finish_md, count);
504                 }
505         return ret;
506         }
507
508 /* return length of latest Finished message we expected, copy to 'buf' */
509 size_t SSL_get_peer_finished(SSL *s, void *buf, size_t count)
510         {
511         size_t ret = 0;
512         
513         if (s->s3 != NULL)
514                 {
515                 ret = s->s3->tmp.peer_finish_md_len;
516                 if (count > ret)
517                         count = ret;
518                 memcpy(buf, s->s3->tmp.peer_finish_md, count);
519                 }
520         return ret;
521         }
522
523
524 int SSL_get_verify_mode(SSL *s)
525         {
526         return(s->verify_mode);
527         }
528
529 int SSL_get_verify_depth(SSL *s)
530         {
531         return(s->verify_depth);
532         }
533
534 int (*SSL_get_verify_callback(SSL *s))(int,X509_STORE_CTX *)
535         {
536         return(s->verify_callback);
537         }
538
539 int SSL_CTX_get_verify_mode(SSL_CTX *ctx)
540         {
541         return(ctx->verify_mode);
542         }
543
544 int SSL_CTX_get_verify_depth(SSL_CTX *ctx)
545         {
546         return(ctx->verify_depth);
547         }
548
549 int (*SSL_CTX_get_verify_callback(SSL_CTX *ctx))(int,X509_STORE_CTX *)
550         {
551         return(ctx->default_verify_callback);
552         }
553
554 void SSL_set_verify(SSL *s,int mode,
555                     int (*callback)(int ok,X509_STORE_CTX *ctx))
556         {
557         s->verify_mode=mode;
558         if (callback != NULL)
559                 s->verify_callback=callback;
560         }
561
562 void SSL_set_verify_depth(SSL *s,int depth)
563         {
564         s->verify_depth=depth;
565         }
566
567 void SSL_set_read_ahead(SSL *s,int yes)
568         {
569         s->read_ahead=yes;
570         }
571
572 int SSL_get_read_ahead(SSL *s)
573         {
574         return(s->read_ahead);
575         }
576
577 int SSL_pending(SSL *s)
578         {
579         return(s->method->ssl_pending(s));
580         }
581
582 X509 *SSL_get_peer_certificate(SSL *s)
583         {
584         X509 *r;
585         
586         if ((s == NULL) || (s->session == NULL))
587                 r=NULL;
588         else
589                 r=s->session->peer;
590
591         if (r == NULL) return(r);
592
593         CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
594
595         return(r);
596         }
597
598 STACK_OF(X509) *SSL_get_peer_cert_chain(SSL *s)
599         {
600         STACK_OF(X509) *r;
601         
602         if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
603                 r=NULL;
604         else
605                 r=s->session->sess_cert->cert_chain;
606
607         /* If we are a client, cert_chain includes the peer's own
608          * certificate; if we are a server, it does not. */
609         
610         return(r);
611         }
612
613 /* Now in theory, since the calling process own 't' it should be safe to
614  * modify.  We need to be able to read f without being hassled */
615 void SSL_copy_session_id(SSL *t,SSL *f)
616         {
617         CERT *tmp;
618
619         /* Do we need to to SSL locking? */
620         SSL_set_session(t,SSL_get_session(f));
621
622         /* what if we are setup as SSLv2 but want to talk SSLv3 or
623          * vice-versa */
624         if (t->method != f->method)
625                 {
626                 t->method->ssl_free(t); /* cleanup current */
627                 t->method=f->method;    /* change method */
628                 t->method->ssl_new(t);  /* setup new */
629                 }
630
631         tmp=t->cert;
632         if (f->cert != NULL)
633                 {
634                 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
635                 t->cert=f->cert;
636                 }
637         else
638                 t->cert=NULL;
639         if (tmp != NULL) ssl_cert_free(tmp);
640         SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
641         }
642
643 /* Fix this so it checks all the valid key/cert options */
644 int SSL_CTX_check_private_key(SSL_CTX *ctx)
645         {
646         if (    (ctx == NULL) ||
647                 (ctx->cert == NULL) ||
648                 (ctx->cert->key->x509 == NULL))
649                 {
650                 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
651                 return(0);
652                 }
653         if      (ctx->cert->key->privatekey == NULL)
654                 {
655                 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
656                 return(0);
657                 }
658         return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
659         }
660
661 /* Fix this function so that it takes an optional type parameter */
662 int SSL_check_private_key(SSL *ssl)
663         {
664         if (ssl == NULL)
665                 {
666                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
667                 return(0);
668                 }
669         if (ssl->cert == NULL)
670                 {
671                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
672                 return 0;
673                 }
674         if (ssl->cert->key->x509 == NULL)
675                 {
676                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
677                 return(0);
678                 }
679         if (ssl->cert->key->privatekey == NULL)
680                 {
681                 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
682                 return(0);
683                 }
684         return(X509_check_private_key(ssl->cert->key->x509,
685                 ssl->cert->key->privatekey));
686         }
687
688 int SSL_accept(SSL *s)
689         {
690         if (s->handshake_func == 0)
691                 /* Not properly initialized yet */
692                 SSL_set_accept_state(s);
693
694         return(s->method->ssl_accept(s));
695         }
696
697 int SSL_connect(SSL *s)
698         {
699         if (s->handshake_func == 0)
700                 /* Not properly initialized yet */
701                 SSL_set_connect_state(s);
702
703         return(s->method->ssl_connect(s));
704         }
705
706 long SSL_get_default_timeout(SSL *s)
707         {
708         return(s->method->get_timeout());
709         }
710
711 int SSL_read(SSL *s,char *buf,int num)
712         {
713         if (s->handshake_func == 0)
714                 {
715                 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
716                 return -1;
717                 }
718
719         if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
720                 {
721                 s->rwstate=SSL_NOTHING;
722                 return(0);
723                 }
724         return(s->method->ssl_read(s,buf,num));
725         }
726
727 int SSL_peek(SSL *s,char *buf,int num)
728         {
729         if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
730                 {
731                 return(0);
732                 }
733         return(s->method->ssl_peek(s,buf,num));
734         }
735
736 int SSL_write(SSL *s,const char *buf,int num)
737         {
738         if (s->handshake_func == 0)
739                 {
740                 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
741                 return -1;
742                 }
743
744         if (s->shutdown & SSL_SENT_SHUTDOWN)
745                 {
746                 s->rwstate=SSL_NOTHING;
747                 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
748                 return(-1);
749                 }
750         return(s->method->ssl_write(s,buf,num));
751         }
752
753 int SSL_shutdown(SSL *s)
754         {
755         /* Note that this function behaves differently from what one might
756          * expect.  Return values are 0 for no success (yet),
757          * 1 for success; but calling it once is usually not enough,
758          * even if blocking I/O is used (see ssl3_shutdown).
759          */
760
761         if (s->handshake_func == 0)
762                 {
763                 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
764                 return -1;
765                 }
766
767         if ((s != NULL) && !SSL_in_init(s))
768                 return(s->method->ssl_shutdown(s));
769         else
770                 return(1);
771         }
772
773 int SSL_renegotiate(SSL *s)
774         {
775         s->new_session=1;
776         return(s->method->ssl_renegotiate(s));
777         }
778
779 long SSL_ctrl(SSL *s,int cmd,long larg,char *parg)
780         {
781         long l;
782
783         switch (cmd)
784                 {
785         case SSL_CTRL_GET_READ_AHEAD:
786                 return(s->read_ahead);
787         case SSL_CTRL_SET_READ_AHEAD:
788                 l=s->read_ahead;
789                 s->read_ahead=larg;
790                 return(l);
791         case SSL_CTRL_OPTIONS:
792                 return(s->options|=larg);
793         case SSL_CTRL_MODE:
794                 return(s->mode|=larg);
795         default:
796                 return(s->method->ssl_ctrl(s,cmd,larg,parg));
797                 }
798         }
799
800 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)())
801         {
802         switch(cmd)
803                 {
804         default:
805                 return(s->method->ssl_callback_ctrl(s,cmd,fp));
806                 }
807         }
808
809 struct lhash_st *SSL_CTX_sessions(SSL_CTX *ctx)
810         {
811         return ctx->sessions;
812         }
813
814 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,char *parg)
815         {
816         long l;
817
818         switch (cmd)
819                 {
820         case SSL_CTRL_GET_READ_AHEAD:
821                 return(ctx->read_ahead);
822         case SSL_CTRL_SET_READ_AHEAD:
823                 l=ctx->read_ahead;
824                 ctx->read_ahead=larg;
825                 return(l);
826
827         case SSL_CTRL_SET_SESS_CACHE_SIZE:
828                 l=ctx->session_cache_size;
829                 ctx->session_cache_size=larg;
830                 return(l);
831         case SSL_CTRL_GET_SESS_CACHE_SIZE:
832                 return(ctx->session_cache_size);
833         case SSL_CTRL_SET_SESS_CACHE_MODE:
834                 l=ctx->session_cache_mode;
835                 ctx->session_cache_mode=larg;
836                 return(l);
837         case SSL_CTRL_GET_SESS_CACHE_MODE:
838                 return(ctx->session_cache_mode);
839
840         case SSL_CTRL_SESS_NUMBER:
841                 return(ctx->sessions->num_items);
842         case SSL_CTRL_SESS_CONNECT:
843                 return(ctx->stats.sess_connect);
844         case SSL_CTRL_SESS_CONNECT_GOOD:
845                 return(ctx->stats.sess_connect_good);
846         case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
847                 return(ctx->stats.sess_connect_renegotiate);
848         case SSL_CTRL_SESS_ACCEPT:
849                 return(ctx->stats.sess_accept);
850         case SSL_CTRL_SESS_ACCEPT_GOOD:
851                 return(ctx->stats.sess_accept_good);
852         case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
853                 return(ctx->stats.sess_accept_renegotiate);
854         case SSL_CTRL_SESS_HIT:
855                 return(ctx->stats.sess_hit);
856         case SSL_CTRL_SESS_CB_HIT:
857                 return(ctx->stats.sess_cb_hit);
858         case SSL_CTRL_SESS_MISSES:
859                 return(ctx->stats.sess_miss);
860         case SSL_CTRL_SESS_TIMEOUTS:
861                 return(ctx->stats.sess_timeout);
862         case SSL_CTRL_SESS_CACHE_FULL:
863                 return(ctx->stats.sess_cache_full);
864         case SSL_CTRL_OPTIONS:
865                 return(ctx->options|=larg);
866         case SSL_CTRL_MODE:
867                 return(ctx->mode|=larg);
868         default:
869                 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
870                 }
871         }
872
873 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)())
874         {
875         switch(cmd)
876                 {
877         default:
878                 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
879                 }
880         }
881
882 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
883         {
884         long l;
885
886         l=a->id-b->id;
887         if (l == 0L)
888                 return(0);
889         else
890                 return((l > 0)?1:-1);
891         }
892
893 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
894                         const SSL_CIPHER * const *bp)
895         {
896         long l;
897
898         l=(*ap)->id-(*bp)->id;
899         if (l == 0L)
900                 return(0);
901         else
902                 return((l > 0)?1:-1);
903         }
904
905 /** return a STACK of the ciphers available for the SSL and in order of
906  * preference */
907 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(SSL *s)
908         {
909         if ((s != NULL) && (s->cipher_list != NULL))
910                 {
911                 return(s->cipher_list);
912                 }
913         else if ((s->ctx != NULL) &&
914                 (s->ctx->cipher_list != NULL))
915                 {
916                 return(s->ctx->cipher_list);
917                 }
918         return(NULL);
919         }
920
921 /** return a STACK of the ciphers available for the SSL and in order of
922  * algorithm id */
923 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
924         {
925         if ((s != NULL) && (s->cipher_list_by_id != NULL))
926                 {
927                 return(s->cipher_list_by_id);
928                 }
929         else if ((s != NULL) && (s->ctx != NULL) &&
930                 (s->ctx->cipher_list_by_id != NULL))
931                 {
932                 return(s->ctx->cipher_list_by_id);
933                 }
934         return(NULL);
935         }
936
937 /** The old interface to get the same thing as SSL_get_ciphers() */
938 const char *SSL_get_cipher_list(SSL *s,int n)
939         {
940         SSL_CIPHER *c;
941         STACK_OF(SSL_CIPHER) *sk;
942
943         if (s == NULL) return(NULL);
944         sk=SSL_get_ciphers(s);
945         if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
946                 return(NULL);
947         c=sk_SSL_CIPHER_value(sk,n);
948         if (c == NULL) return(NULL);
949         return(c->name);
950         }
951
952 /** specify the ciphers to be used by default by the SSL_CTX */
953 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
954         {
955         STACK_OF(SSL_CIPHER) *sk;
956         
957         sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
958                 &ctx->cipher_list_by_id,str);
959 /* XXXX */
960         return((sk == NULL)?0:1);
961         }
962
963 /** specify the ciphers to be used by the SSL */
964 int SSL_set_cipher_list(SSL *s,const char *str)
965         {
966         STACK_OF(SSL_CIPHER) *sk;
967         
968         sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
969                 &s->cipher_list_by_id,str);
970 /* XXXX */
971         return((sk == NULL)?0:1);
972         }
973
974 /* works well for SSLv2, not so good for SSLv3 */
975 char *SSL_get_shared_ciphers(SSL *s,char *buf,int len)
976         {
977         char *p;
978         const char *cp;
979         STACK_OF(SSL_CIPHER) *sk;
980         SSL_CIPHER *c;
981         int i;
982
983         if ((s->session == NULL) || (s->session->ciphers == NULL) ||
984                 (len < 2))
985                 return(NULL);
986
987         p=buf;
988         sk=s->session->ciphers;
989         for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
990                 {
991                 /* Decrement for either the ':' or a '\0' */
992                 len--;
993                 c=sk_SSL_CIPHER_value(sk,i);
994                 for (cp=c->name; *cp; )
995                         {
996                         if (len-- == 0)
997                                 {
998                                 *p='\0';
999                                 return(buf);
1000                                 }
1001                         else
1002                                 *(p++)= *(cp++);
1003                         }
1004                 *(p++)=':';
1005                 }
1006         p[-1]='\0';
1007         return(buf);
1008         }
1009
1010 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p)
1011         {
1012         int i,j=0;
1013         SSL_CIPHER *c;
1014         unsigned char *q;
1015
1016         if (sk == NULL) return(0);
1017         q=p;
1018
1019         for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1020                 {
1021                 c=sk_SSL_CIPHER_value(sk,i);
1022                 j=ssl_put_cipher_by_char(s,c,p);
1023                 p+=j;
1024                 }
1025         return(p-q);
1026         }
1027
1028 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1029                                                STACK_OF(SSL_CIPHER) **skp)
1030         {
1031         SSL_CIPHER *c;
1032         STACK_OF(SSL_CIPHER) *sk;
1033         int i,n;
1034
1035         n=ssl_put_cipher_by_char(s,NULL,NULL);
1036         if ((num%n) != 0)
1037                 {
1038                 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1039                 return(NULL);
1040                 }
1041         if ((skp == NULL) || (*skp == NULL))
1042                 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1043         else
1044                 {
1045                 sk= *skp;
1046                 sk_SSL_CIPHER_zero(sk);
1047                 }
1048
1049         for (i=0; i<num; i+=n)
1050                 {
1051                 c=ssl_get_cipher_by_char(s,p);
1052                 p+=n;
1053                 if (c != NULL)
1054                         {
1055                         if (!sk_SSL_CIPHER_push(sk,c))
1056                                 {
1057                                 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1058                                 goto err;
1059                                 }
1060                         }
1061                 }
1062
1063         if (skp != NULL)
1064                 *skp=sk;
1065         return(sk);
1066 err:
1067         if ((skp == NULL) || (*skp == NULL))
1068                 sk_SSL_CIPHER_free(sk);
1069         return(NULL);
1070         }
1071
1072 unsigned long SSL_SESSION_hash(SSL_SESSION *a)
1073         {
1074         unsigned long l;
1075
1076         l=(unsigned long)
1077                 ((unsigned int) a->session_id[0]     )|
1078                 ((unsigned int) a->session_id[1]<< 8L)|
1079                 ((unsigned long)a->session_id[2]<<16L)|
1080                 ((unsigned long)a->session_id[3]<<24L);
1081         return(l);
1082         }
1083
1084 int SSL_SESSION_cmp(SSL_SESSION *a,SSL_SESSION *b)
1085         {
1086         if (a->ssl_version != b->ssl_version)
1087                 return(1);
1088         if (a->session_id_length != b->session_id_length)
1089                 return(1);
1090         return(memcmp(a->session_id,b->session_id,a->session_id_length));
1091         }
1092
1093 SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
1094         {
1095         SSL_CTX *ret=NULL;
1096         
1097         if (meth == NULL)
1098                 {
1099                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1100                 return(NULL);
1101                 }
1102
1103         if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1104                 {
1105                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1106                 goto err;
1107                 }
1108         ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1109         if (ret == NULL)
1110                 goto err;
1111
1112         memset(ret,0,sizeof(SSL_CTX));
1113
1114         ret->method=meth;
1115
1116         ret->cert_store=NULL;
1117         ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1118         ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1119         ret->session_cache_head=NULL;
1120         ret->session_cache_tail=NULL;
1121
1122         /* We take the system default */
1123         ret->session_timeout=meth->get_timeout();
1124
1125         ret->new_session_cb=NULL;
1126         ret->remove_session_cb=NULL;
1127         ret->get_session_cb=NULL;
1128
1129         memset((char *)&ret->stats,0,sizeof(ret->stats));
1130
1131         ret->references=1;
1132         ret->quiet_shutdown=0;
1133
1134 /*      ret->cipher=NULL;*/
1135 /*      ret->s2->challenge=NULL;
1136         ret->master_key=NULL;
1137         ret->key_arg=NULL;
1138         ret->s2->conn_id=NULL; */
1139
1140         ret->info_callback=NULL;
1141
1142         ret->app_verify_callback=NULL;
1143         ret->app_verify_arg=NULL;
1144
1145         ret->read_ahead=0;
1146         ret->verify_mode=SSL_VERIFY_NONE;
1147         ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1148         ret->default_verify_callback=NULL;
1149         if ((ret->cert=ssl_cert_new()) == NULL)
1150                 goto err;
1151
1152         ret->default_passwd_callback=NULL;
1153         ret->default_passwd_callback_userdata=NULL;
1154         ret->client_cert_cb=NULL;
1155
1156         ret->sessions=lh_new(SSL_SESSION_hash,SSL_SESSION_cmp);
1157         if (ret->sessions == NULL) goto err;
1158         ret->cert_store=X509_STORE_new();
1159         if (ret->cert_store == NULL) goto err;
1160
1161         ssl_create_cipher_list(ret->method,
1162                 &ret->cipher_list,&ret->cipher_list_by_id,
1163                 SSL_DEFAULT_CIPHER_LIST);
1164         if (ret->cipher_list == NULL
1165             || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1166                 {
1167                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1168                 goto err2;
1169                 }
1170
1171         if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1172                 {
1173                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1174                 goto err2;
1175                 }
1176         if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1177                 {
1178                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1179                 goto err2;
1180                 }
1181         if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1182                 {
1183                 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1184                 goto err2;
1185                 }
1186
1187         if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1188                 goto err;
1189
1190         CRYPTO_new_ex_data(ssl_ctx_meth,(char *)ret,&ret->ex_data);
1191
1192         ret->extra_certs=NULL;
1193         ret->comp_methods=SSL_COMP_get_compression_methods();
1194
1195         return(ret);
1196 err:
1197         SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1198 err2:
1199         if (ret != NULL) SSL_CTX_free(ret);
1200         return(NULL);
1201         }
1202
1203 static void SSL_COMP_free(SSL_COMP *comp)
1204     { OPENSSL_free(comp); }
1205
1206 void SSL_CTX_free(SSL_CTX *a)
1207         {
1208         int i;
1209
1210         if (a == NULL) return;
1211
1212         i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1213 #ifdef REF_PRINT
1214         REF_PRINT("SSL_CTX",a);
1215 #endif
1216         if (i > 0) return;
1217 #ifdef REF_CHECK
1218         if (i < 0)
1219                 {
1220                 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1221                 abort(); /* ok */
1222                 }
1223 #endif
1224         CRYPTO_free_ex_data(ssl_ctx_meth,(char *)a,&a->ex_data);
1225
1226         if (a->sessions != NULL)
1227                 {
1228                 SSL_CTX_flush_sessions(a,0);
1229                 lh_free(a->sessions);
1230                 }
1231         if (a->cert_store != NULL)
1232                 X509_STORE_free(a->cert_store);
1233         if (a->cipher_list != NULL)
1234                 sk_SSL_CIPHER_free(a->cipher_list);
1235         if (a->cipher_list_by_id != NULL)
1236                 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1237         if (a->cert != NULL)
1238                 ssl_cert_free(a->cert);
1239         if (a->client_CA != NULL)
1240                 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1241         if (a->extra_certs != NULL)
1242                 sk_X509_pop_free(a->extra_certs,X509_free);
1243         if (a->comp_methods != NULL)
1244                 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1245         OPENSSL_free(a);
1246         }
1247
1248 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1249         {
1250         ctx->default_passwd_callback=cb;
1251         }
1252
1253 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1254         {
1255         ctx->default_passwd_callback_userdata=u;
1256         }
1257
1258 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,int (*cb)(),char *arg)
1259         {
1260         /* now
1261          *     int (*cb)(X509_STORE_CTX *),
1262          * but should be
1263          *     int (*cb)(X509_STORE_CTX *, void *arg)
1264          */
1265         ctx->app_verify_callback=cb;
1266         ctx->app_verify_arg=arg; /* never used */
1267         }
1268
1269 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1270         {
1271         ctx->verify_mode=mode;
1272         ctx->default_verify_callback=cb;
1273         /* This needs cleaning up EAY EAY EAY */
1274         X509_STORE_set_verify_cb_func(ctx->cert_store,cb);
1275         }
1276
1277 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
1278         {
1279         ctx->verify_depth=depth;
1280         }
1281
1282 void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
1283         {
1284         CERT_PKEY *cpk;
1285         int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1286         int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1287         int rsa_tmp_export,dh_tmp_export,kl;
1288         unsigned long mask,emask;
1289
1290         if (c == NULL) return;
1291
1292         kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1293
1294 #ifndef NO_RSA
1295         rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
1296         rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
1297                 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
1298 #else
1299         rsa_tmp=rsa_tmp_export=0;
1300 #endif
1301 #ifndef NO_DH
1302         dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
1303         dh_tmp_export=(c->dh_tmp_cb != NULL ||
1304                 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
1305 #else
1306         dh_tmp=dh_tmp_export=0;
1307 #endif
1308
1309         cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1310         rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
1311         rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1312         cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1313         rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1314         cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1315         dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1316         cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1317         dh_rsa=  (cpk->x509 != NULL && cpk->privatekey != NULL);
1318         dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1319         cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1320 /* FIX THIS EAY EAY EAY */
1321         dh_dsa=  (cpk->x509 != NULL && cpk->privatekey != NULL);
1322         dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1323
1324         mask=0;
1325         emask=0;
1326
1327 #ifdef CIPHER_DEBUG
1328         printf("rt=%d rte=%d dht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1329                 rsa_tmp,rsa_tmp_export,dh_tmp,
1330                 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1331 #endif
1332
1333         if (rsa_enc || (rsa_tmp && rsa_sign))
1334                 mask|=SSL_kRSA;
1335         if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
1336                 emask|=SSL_kRSA;
1337
1338 #if 0
1339         /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1340         if (    (dh_tmp || dh_rsa || dh_dsa) && 
1341                 (rsa_enc || rsa_sign || dsa_sign))
1342                 mask|=SSL_kEDH;
1343         if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1344                 (rsa_enc || rsa_sign || dsa_sign))
1345                 emask|=SSL_kEDH;
1346 #endif
1347
1348         if (dh_tmp_export) 
1349                 emask|=SSL_kEDH;
1350
1351         if (dh_tmp)
1352                 mask|=SSL_kEDH;
1353
1354         if (dh_rsa) mask|=SSL_kDHr;
1355         if (dh_rsa_export) emask|=SSL_kDHr;
1356
1357         if (dh_dsa) mask|=SSL_kDHd;
1358         if (dh_dsa_export) emask|=SSL_kDHd;
1359
1360         if (rsa_enc || rsa_sign)
1361                 {
1362                 mask|=SSL_aRSA;
1363                 emask|=SSL_aRSA;
1364                 }
1365
1366         if (dsa_sign)
1367                 {
1368                 mask|=SSL_aDSS;
1369                 emask|=SSL_aDSS;
1370                 }
1371
1372         mask|=SSL_aNULL;
1373         emask|=SSL_aNULL;
1374
1375         c->mask=mask;
1376         c->export_mask=emask;
1377         c->valid=1;
1378         }
1379
1380 /* THIS NEEDS CLEANING UP */
1381 X509 *ssl_get_server_send_cert(SSL *s)
1382         {
1383         unsigned long alg,mask,kalg;
1384         CERT *c;
1385         int i,is_export;
1386
1387         c=s->cert;
1388         ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
1389         alg=s->s3->tmp.new_cipher->algorithms;
1390         is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
1391         mask=is_export?c->export_mask:c->mask;
1392         kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK);
1393
1394         if      (kalg & SSL_kDHr)
1395                 i=SSL_PKEY_DH_RSA;
1396         else if (kalg & SSL_kDHd)
1397                 i=SSL_PKEY_DH_DSA;
1398         else if (kalg & SSL_aDSS)
1399                 i=SSL_PKEY_DSA_SIGN;
1400         else if (kalg & SSL_aRSA)
1401                 {
1402                 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
1403                         i=SSL_PKEY_RSA_SIGN;
1404                 else
1405                         i=SSL_PKEY_RSA_ENC;
1406                 }
1407         else /* if (kalg & SSL_aNULL) */
1408                 {
1409                 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,SSL_R_INTERNAL_ERROR);
1410                 return(NULL);
1411                 }
1412         if (c->pkeys[i].x509 == NULL) return(NULL);
1413         return(c->pkeys[i].x509);
1414         }
1415
1416 EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher)
1417         {
1418         unsigned long alg;
1419         CERT *c;
1420
1421         alg=cipher->algorithms;
1422         c=s->cert;
1423
1424         if ((alg & SSL_aDSS) &&
1425                 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
1426                 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
1427         else if (alg & SSL_aRSA)
1428                 {
1429                 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
1430                         return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
1431                 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
1432                         return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
1433                 else
1434                         return(NULL);
1435                 }
1436         else /* if (alg & SSL_aNULL) */
1437                 {
1438                 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,SSL_R_INTERNAL_ERROR);
1439                 return(NULL);
1440                 }
1441         }
1442
1443 void ssl_update_cache(SSL *s,int mode)
1444         {
1445         int i;
1446
1447         /* If the session_id_length is 0, we are not supposed to cache it,
1448          * and it would be rather hard to do anyway :-) */
1449         if (s->session->session_id_length == 0) return;
1450
1451         if ((s->ctx->session_cache_mode & mode)
1452                 && (!s->hit)
1453                 && SSL_CTX_add_session(s->ctx,s->session)
1454                 && (s->ctx->new_session_cb != NULL))
1455                 {
1456                 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
1457                 if (!s->ctx->new_session_cb(s,s->session))
1458                         SSL_SESSION_free(s->session);
1459                 }
1460
1461         /* auto flush every 255 connections */
1462         i=s->ctx->session_cache_mode;
1463         if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
1464                 ((i & mode) == mode))
1465                 {
1466                 if (  (((mode & SSL_SESS_CACHE_CLIENT)
1467                         ?s->ctx->stats.sess_connect_good
1468                         :s->ctx->stats.sess_accept_good) & 0xff) == 0xff)
1469                         {
1470                         SSL_CTX_flush_sessions(s->ctx,time(NULL));
1471                         }
1472                 }
1473         }
1474
1475 SSL_METHOD *SSL_get_ssl_method(SSL *s)
1476         {
1477         return(s->method);
1478         }
1479
1480 int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth)
1481         {
1482         int conn= -1;
1483         int ret=1;
1484
1485         if (s->method != meth)
1486                 {
1487                 if (s->handshake_func != NULL)
1488                         conn=(s->handshake_func == s->method->ssl_connect);
1489
1490                 if (s->method->version == meth->version)
1491                         s->method=meth;
1492                 else
1493                         {
1494                         s->method->ssl_free(s);
1495                         s->method=meth;
1496                         ret=s->method->ssl_new(s);
1497                         }
1498
1499                 if (conn == 1)
1500                         s->handshake_func=meth->ssl_connect;
1501                 else if (conn == 0)
1502                         s->handshake_func=meth->ssl_accept;
1503                 }
1504         return(ret);
1505         }
1506
1507 int SSL_get_error(SSL *s,int i)
1508         {
1509         int reason;
1510         unsigned long l;
1511         BIO *bio;
1512
1513         if (i > 0) return(SSL_ERROR_NONE);
1514
1515         /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
1516          * etc, where we do encode the error */
1517         if ((l=ERR_peek_error()) != 0)
1518                 {
1519                 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
1520                         return(SSL_ERROR_SYSCALL);
1521                 else
1522                         return(SSL_ERROR_SSL);
1523                 }
1524
1525         if ((i < 0) && SSL_want_read(s))
1526                 {
1527                 bio=SSL_get_rbio(s);
1528                 if (BIO_should_read(bio))
1529                         return(SSL_ERROR_WANT_READ);
1530                 else if (BIO_should_write(bio))
1531                         /* This one doesn't make too much sense ... We never try
1532                          * to write to the rbio, and an application program where
1533                          * rbio and wbio are separate couldn't even know what it
1534                          * should wait for.
1535                          * However if we ever set s->rwstate incorrectly
1536                          * (so that we have SSL_want_read(s) instead of
1537                          * SSL_want_write(s)) and rbio and wbio *are* the same,
1538                          * this test works around that bug; so it might be safer
1539                          * to keep it. */
1540                         return(SSL_ERROR_WANT_WRITE);
1541                 else if (BIO_should_io_special(bio))
1542                         {
1543                         reason=BIO_get_retry_reason(bio);
1544                         if (reason == BIO_RR_CONNECT)
1545                                 return(SSL_ERROR_WANT_CONNECT);
1546                         else
1547                                 return(SSL_ERROR_SYSCALL); /* unknown */
1548                         }
1549                 }
1550
1551         if ((i < 0) && SSL_want_write(s))
1552                 {
1553                 bio=SSL_get_wbio(s);
1554                 if (BIO_should_write(bio))
1555                         return(SSL_ERROR_WANT_WRITE);
1556                 else if (BIO_should_read(bio))
1557                         /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
1558                         return(SSL_ERROR_WANT_READ);
1559                 else if (BIO_should_io_special(bio))
1560                         {
1561                         reason=BIO_get_retry_reason(bio);
1562                         if (reason == BIO_RR_CONNECT)
1563                                 return(SSL_ERROR_WANT_CONNECT);
1564                         else
1565                                 return(SSL_ERROR_SYSCALL);
1566                         }
1567                 }
1568         if ((i < 0) && SSL_want_x509_lookup(s))
1569                 {
1570                 return(SSL_ERROR_WANT_X509_LOOKUP);
1571                 }
1572
1573         if (i == 0)
1574                 {
1575                 if (s->version == SSL2_VERSION)
1576                         {
1577                         /* assume it is the socket being closed */
1578                         return(SSL_ERROR_ZERO_RETURN);
1579                         }
1580                 else
1581                         {
1582                         if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
1583                                 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
1584                                 return(SSL_ERROR_ZERO_RETURN);
1585                         }
1586                 }
1587         return(SSL_ERROR_SYSCALL);
1588         }
1589
1590 int SSL_do_handshake(SSL *s)
1591         {
1592         int ret=1;
1593
1594         if (s->handshake_func == NULL)
1595                 {
1596                 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
1597                 return(-1);
1598                 }
1599
1600         s->method->ssl_renegotiate_check(s);
1601
1602         if (SSL_in_init(s) || SSL_in_before(s))
1603                 {
1604                 ret=s->handshake_func(s);
1605                 }
1606         return(ret);
1607         }
1608
1609 /* For the next 2 functions, SSL_clear() sets shutdown and so
1610  * one of these calls will reset it */
1611 void SSL_set_accept_state(SSL *s)
1612         {
1613         s->server=1;
1614         s->shutdown=0;
1615         s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
1616         s->handshake_func=s->method->ssl_accept;
1617         /* clear the current cipher */
1618         ssl_clear_cipher_ctx(s);
1619         }
1620
1621 void SSL_set_connect_state(SSL *s)
1622         {
1623         s->server=0;
1624         s->shutdown=0;
1625         s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
1626         s->handshake_func=s->method->ssl_connect;
1627         /* clear the current cipher */
1628         ssl_clear_cipher_ctx(s);
1629         }
1630
1631 int ssl_undefined_function(SSL *s)
1632         {
1633         SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1634         return(0);
1635         }
1636
1637 SSL_METHOD *ssl_bad_method(int ver)
1638         {
1639         SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1640         return(NULL);
1641         }
1642
1643 const char *SSL_get_version(SSL *s)
1644         {
1645         if (s->version == TLS1_VERSION)
1646                 return("TLSv1");
1647         else if (s->version == SSL3_VERSION)
1648                 return("SSLv3");
1649         else if (s->version == SSL2_VERSION)
1650                 return("SSLv2");
1651         else
1652                 return("unknown");
1653         }
1654
1655 SSL *SSL_dup(SSL *s)
1656         {
1657         STACK_OF(X509_NAME) *sk;
1658         X509_NAME *xn;
1659         SSL *ret;
1660         int i;
1661                  
1662         if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
1663             return(NULL);
1664                           
1665         if (s->session != NULL)
1666                 {
1667                 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
1668                 SSL_copy_session_id(ret,s);
1669                 }
1670         else
1671                 {
1672                 /* No session has been established yet, so we have to expect
1673                  * that s->cert or ret->cert will be changed later --
1674                  * they should not both point to the same object,
1675                  * and thus we can't use SSL_copy_session_id. */
1676
1677                 ret->method = s->method;
1678                 ret->method->ssl_new(ret);
1679
1680                 if (s->cert != NULL)
1681                         {
1682                         ret->cert = ssl_cert_dup(s->cert);
1683                         if (ret->cert == NULL)
1684                                 goto err;
1685                         }
1686                                 
1687                 SSL_set_session_id_context(ret,
1688                         s->sid_ctx, s->sid_ctx_length);
1689                 }
1690
1691         SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
1692         SSL_set_verify(ret,SSL_get_verify_mode(s),
1693                 SSL_get_verify_callback(s));
1694         SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
1695
1696         SSL_set_info_callback(ret,SSL_get_info_callback(s));
1697         
1698         ret->debug=s->debug;
1699         ret->options=s->options;
1700
1701         /* copy app data, a little dangerous perhaps */
1702         if (!CRYPTO_dup_ex_data(ssl_meth,&ret->ex_data,&s->ex_data))
1703                 goto err;
1704
1705         /* setup rbio, and wbio */
1706         if (s->rbio != NULL)
1707                 {
1708                 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
1709                         goto err;
1710                 }
1711         if (s->wbio != NULL)
1712                 {
1713                 if (s->wbio != s->rbio)
1714                         {
1715                         if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
1716                                 goto err;
1717                         }
1718                 else
1719                         ret->wbio=ret->rbio;
1720                 }
1721
1722         /* dup the cipher_list and cipher_list_by_id stacks */
1723         if (s->cipher_list != NULL)
1724                 {
1725                 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
1726                         goto err;
1727                 }
1728         if (s->cipher_list_by_id != NULL)
1729                 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
1730                         == NULL)
1731                         goto err;
1732
1733         /* Dup the client_CA list */
1734         if (s->client_CA != NULL)
1735                 {
1736                 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
1737                 ret->client_CA=sk;
1738                 for (i=0; i<sk_X509_NAME_num(sk); i++)
1739                         {
1740                         xn=sk_X509_NAME_value(sk,i);
1741                         if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
1742                                 {
1743                                 X509_NAME_free(xn);
1744                                 goto err;
1745                                 }
1746                         }
1747                 }
1748
1749         ret->shutdown=s->shutdown;
1750         ret->state=s->state;
1751         ret->handshake_func=s->handshake_func;
1752         ret->server=s->server;
1753
1754         if (0)
1755                 {
1756 err:
1757                 if (ret != NULL) SSL_free(ret);
1758                 ret=NULL;
1759                 }
1760         return(ret);
1761         }
1762
1763 void ssl_clear_cipher_ctx(SSL *s)
1764         {
1765         if (s->enc_read_ctx != NULL)
1766                 {
1767                 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
1768                 OPENSSL_free(s->enc_read_ctx);
1769                 s->enc_read_ctx=NULL;
1770                 }
1771         if (s->enc_write_ctx != NULL)
1772                 {
1773                 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
1774                 OPENSSL_free(s->enc_write_ctx);
1775                 s->enc_write_ctx=NULL;
1776                 }
1777         if (s->expand != NULL)
1778                 {
1779                 COMP_CTX_free(s->expand);
1780                 s->expand=NULL;
1781                 }
1782         if (s->compress != NULL)
1783                 {
1784                 COMP_CTX_free(s->compress);
1785                 s->compress=NULL;
1786                 }
1787         }
1788
1789 /* Fix this function so that it takes an optional type parameter */
1790 X509 *SSL_get_certificate(SSL *s)
1791         {
1792         if (s->cert != NULL)
1793                 return(s->cert->key->x509);
1794         else
1795                 return(NULL);
1796         }
1797
1798 /* Fix this function so that it takes an optional type parameter */
1799 EVP_PKEY *SSL_get_privatekey(SSL *s)
1800         {
1801         if (s->cert != NULL)
1802                 return(s->cert->key->privatekey);
1803         else
1804                 return(NULL);
1805         }
1806
1807 SSL_CIPHER *SSL_get_current_cipher(SSL *s)
1808         {
1809         if ((s->session != NULL) && (s->session->cipher != NULL))
1810                 return(s->session->cipher);
1811         return(NULL);
1812         }
1813
1814 int ssl_init_wbio_buffer(SSL *s,int push)
1815         {
1816         BIO *bbio;
1817
1818         if (s->bbio == NULL)
1819                 {
1820                 bbio=BIO_new(BIO_f_buffer());
1821                 if (bbio == NULL) return(0);
1822                 s->bbio=bbio;
1823                 }
1824         else
1825                 {
1826                 bbio=s->bbio;
1827                 if (s->bbio == s->wbio)
1828                         s->wbio=BIO_pop(s->wbio);
1829                 }
1830         (void)BIO_reset(bbio);
1831 /*      if (!BIO_set_write_buffer_size(bbio,16*1024)) */
1832         if (!BIO_set_read_buffer_size(bbio,1))
1833                 {
1834                 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
1835                 return(0);
1836                 }
1837         if (push)
1838                 {
1839                 if (s->wbio != bbio)
1840                         s->wbio=BIO_push(bbio,s->wbio);
1841                 }
1842         else
1843                 {
1844                 if (s->wbio == bbio)
1845                         s->wbio=BIO_pop(bbio);
1846                 }
1847         return(1);
1848         }
1849
1850 void ssl_free_wbio_buffer(SSL *s)
1851         {
1852         if (s->bbio == NULL) return;
1853
1854         if (s->bbio == s->wbio)
1855                 {
1856                 /* remove buffering */
1857                 s->wbio=BIO_pop(s->wbio);
1858 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
1859                 assert(s->wbio != NULL);
1860 #endif  
1861         }
1862         BIO_free(s->bbio);
1863         s->bbio=NULL;
1864         }
1865         
1866 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
1867         {
1868         ctx->quiet_shutdown=mode;
1869         }
1870
1871 int SSL_CTX_get_quiet_shutdown(SSL_CTX *ctx)
1872         {
1873         return(ctx->quiet_shutdown);
1874         }
1875
1876 void SSL_set_quiet_shutdown(SSL *s,int mode)
1877         {
1878         s->quiet_shutdown=mode;
1879         }
1880
1881 int SSL_get_quiet_shutdown(SSL *s)
1882         {
1883         return(s->quiet_shutdown);
1884         }
1885
1886 void SSL_set_shutdown(SSL *s,int mode)
1887         {
1888         s->shutdown=mode;
1889         }
1890
1891 int SSL_get_shutdown(SSL *s)
1892         {
1893         return(s->shutdown);
1894         }
1895
1896 int SSL_version(SSL *s)
1897         {
1898         return(s->version);
1899         }
1900
1901 SSL_CTX *SSL_get_SSL_CTX(SSL *ssl)
1902         {
1903         return(ssl->ctx);
1904         }
1905
1906 #ifndef NO_STDIO
1907 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
1908         {
1909         return(X509_STORE_set_default_paths(ctx->cert_store));
1910         }
1911
1912 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
1913                 const char *CApath)
1914         {
1915         return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
1916         }
1917 #endif
1918
1919 void SSL_set_info_callback(SSL *ssl,void (*cb)())
1920         {
1921         ssl->info_callback=cb;
1922         }
1923
1924 void (*SSL_get_info_callback(SSL *ssl))(void)
1925         {
1926         return((void (*)())ssl->info_callback);
1927         }
1928
1929 int SSL_state(SSL *ssl)
1930         {
1931         return(ssl->state);
1932         }
1933
1934 void SSL_set_verify_result(SSL *ssl,long arg)
1935         {
1936         ssl->verify_result=arg;
1937         }
1938
1939 long SSL_get_verify_result(SSL *ssl)
1940         {
1941         return(ssl->verify_result);
1942         }
1943
1944 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
1945                          CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
1946         {
1947         ssl_meth_num++;
1948         return(CRYPTO_get_ex_new_index(ssl_meth_num-1,
1949                 &ssl_meth,argl,argp,new_func,dup_func,free_func));
1950         }
1951
1952 int SSL_set_ex_data(SSL *s,int idx,void *arg)
1953         {
1954         return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
1955         }
1956
1957 void *SSL_get_ex_data(SSL *s,int idx)
1958         {
1959         return(CRYPTO_get_ex_data(&s->ex_data,idx));
1960         }
1961
1962 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
1963                              CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
1964         {
1965         ssl_ctx_meth_num++;
1966         return(CRYPTO_get_ex_new_index(ssl_ctx_meth_num-1,
1967                 &ssl_ctx_meth,argl,argp,new_func,dup_func,free_func));
1968         }
1969
1970 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
1971         {
1972         return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
1973         }
1974
1975 void *SSL_CTX_get_ex_data(SSL_CTX *s,int idx)
1976         {
1977         return(CRYPTO_get_ex_data(&s->ex_data,idx));
1978         }
1979
1980 int ssl_ok(SSL *s)
1981         {
1982         return(1);
1983         }
1984
1985 X509_STORE *SSL_CTX_get_cert_store(SSL_CTX *ctx)
1986         {
1987         return(ctx->cert_store);
1988         }
1989
1990 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
1991         {
1992         if (ctx->cert_store != NULL)
1993                 X509_STORE_free(ctx->cert_store);
1994         ctx->cert_store=store;
1995         }
1996
1997 int SSL_want(SSL *s)
1998         {
1999         return(s->rwstate);
2000         }
2001
2002 /*!
2003  * \brief Set the callback for generating temporary RSA keys.
2004  * \param ctx the SSL context.
2005  * \param cb the callback
2006  */
2007
2008 #ifndef NO_RSA
2009 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
2010                                                           int is_export,
2011                                                           int keylength))
2012     {
2013     SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2014     }
2015
2016 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
2017                                                   int is_export,
2018                                                   int keylength))
2019     {
2020     SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
2021     }
2022 #endif
2023
2024 #ifdef DOXYGEN
2025 /*!
2026  * \brief The RSA temporary key callback function.
2027  * \param ssl the SSL session.
2028  * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
2029  * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
2030  * of the required key in bits.
2031  * \return the temporary RSA key.
2032  * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
2033  */
2034
2035 RSA *cb(SSL *ssl,int is_export,int keylength)
2036     {}
2037 #endif
2038
2039 /*!
2040  * \brief Set the callback for generating temporary DH keys.
2041  * \param ctx the SSL context.
2042  * \param dh the callback
2043  */
2044
2045 #ifndef NO_DH
2046 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
2047                                                         int keylength))
2048     {
2049     SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2050     }
2051
2052 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
2053                                                 int keylength))
2054     {
2055     SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
2056     }
2057 #endif
2058
2059 #if defined(_WINDLL) && defined(WIN16)
2060 #include "../crypto/bio/bss_file.c"
2061 #endif
2062
2063 IMPLEMENT_STACK_OF(SSL_CIPHER)
2064 IMPLEMENT_STACK_OF(SSL_COMP)