Zero the premaster secret after deriving the master secret in DH
[openssl.git] / ssl / s3_lib.c
1 /* ssl/s3_lib.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3  * All rights reserved.
4  *
5  * This package is an SSL implementation written
6  * by Eric Young (eay@cryptsoft.com).
7  * The implementation was written so as to conform with Netscapes SSL.
8  * 
9  * This library is free for commercial and non-commercial use as long as
10  * the following conditions are aheared to.  The following conditions
11  * apply to all code found in this distribution, be it the RC4, RSA,
12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
13  * included with this distribution is covered by the same copyright terms
14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15  * 
16  * Copyright remains Eric Young's, and as such any Copyright notices in
17  * the code are not to be removed.
18  * If this package is used in a product, Eric Young should be given attribution
19  * as the author of the parts of the library used.
20  * This can be in the form of a textual message at program startup or
21  * in documentation (online or textual) provided with the package.
22  * 
23  * Redistribution and use in source and binary forms, with or without
24  * modification, are permitted provided that the following conditions
25  * are met:
26  * 1. Redistributions of source code must retain the copyright
27  *    notice, this list of conditions and the following disclaimer.
28  * 2. Redistributions in binary form must reproduce the above copyright
29  *    notice, this list of conditions and the following disclaimer in the
30  *    documentation and/or other materials provided with the distribution.
31  * 3. All advertising materials mentioning features or use of this software
32  *    must display the following acknowledgement:
33  *    "This product includes cryptographic software written by
34  *     Eric Young (eay@cryptsoft.com)"
35  *    The word 'cryptographic' can be left out if the rouines from the library
36  *    being used are not cryptographic related :-).
37  * 4. If you include any Windows specific code (or a derivative thereof) from 
38  *    the apps directory (application code) you must include an acknowledgement:
39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40  * 
41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51  * SUCH DAMAGE.
52  * 
53  * The licence and distribution terms for any publically available version or
54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
55  * copied and put under another distribution licence
56  * [including the GNU Public Licence.]
57  */
58 /* ====================================================================
59  * Copyright (c) 1998-2000 The OpenSSL Project.  All rights reserved.
60  *
61  * Redistribution and use in source and binary forms, with or without
62  * modification, are permitted provided that the following conditions
63  * are met:
64  *
65  * 1. Redistributions of source code must retain the above copyright
66  *    notice, this list of conditions and the following disclaimer. 
67  *
68  * 2. Redistributions in binary form must reproduce the above copyright
69  *    notice, this list of conditions and the following disclaimer in
70  *    the documentation and/or other materials provided with the
71  *    distribution.
72  *
73  * 3. All advertising materials mentioning features or use of this
74  *    software must display the following acknowledgment:
75  *    "This product includes software developed by the OpenSSL Project
76  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77  *
78  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79  *    endorse or promote products derived from this software without
80  *    prior written permission. For written permission, please contact
81  *    openssl-core@openssl.org.
82  *
83  * 5. Products derived from this software may not be called "OpenSSL"
84  *    nor may "OpenSSL" appear in their names without prior written
85  *    permission of the OpenSSL Project.
86  *
87  * 6. Redistributions of any form whatsoever must retain the following
88  *    acknowledgment:
89  *    "This product includes software developed by the OpenSSL Project
90  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91  *
92  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
96  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103  * OF THE POSSIBILITY OF SUCH DAMAGE.
104  * ====================================================================
105  *
106  * This product includes cryptographic software written by Eric Young
107  * (eay@cryptsoft.com).  This product includes software written by Tim
108  * Hudson (tjh@cryptsoft.com).
109  *
110  */
111
112 #include <stdio.h>
113 #include <openssl/md5.h>
114 #include <openssl/sha.h>
115 #include <openssl/objects.h>
116 #include "ssl_locl.h"
117
118 const char *ssl3_version_str="SSLv3" OPENSSL_VERSION_PTEXT;
119
120 #define SSL3_NUM_CIPHERS        (sizeof(ssl3_ciphers)/sizeof(SSL_CIPHER))
121
122 static long ssl3_default_timeout(void );
123
124 OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[]={
125 /* The RSA ciphers */
126 /* Cipher 01 */
127         {
128         1,
129         SSL3_TXT_RSA_NULL_MD5,
130         SSL3_CK_RSA_NULL_MD5,
131         SSL_kRSA|SSL_aRSA|SSL_eNULL |SSL_MD5|SSL_SSLV3,
132         SSL_NOT_EXP,
133         0,
134         0,
135         0,
136         SSL_ALL_CIPHERS,
137         SSL_ALL_STRENGTHS,
138         },
139 /* Cipher 02 */
140         {
141         1,
142         SSL3_TXT_RSA_NULL_SHA,
143         SSL3_CK_RSA_NULL_SHA,
144         SSL_kRSA|SSL_aRSA|SSL_eNULL |SSL_SHA1|SSL_SSLV3,
145         SSL_NOT_EXP,
146         0,
147         0,
148         0,
149         SSL_ALL_CIPHERS,
150         SSL_ALL_STRENGTHS,
151         },
152
153 /* anon DH */
154 /* Cipher 17 */
155         {
156         1,
157         SSL3_TXT_ADH_RC4_40_MD5,
158         SSL3_CK_ADH_RC4_40_MD5,
159         SSL_kEDH |SSL_aNULL|SSL_RC4  |SSL_MD5 |SSL_SSLV3,
160         SSL_EXPORT|SSL_EXP40,
161         0,
162         40,
163         128,
164         SSL_ALL_CIPHERS,
165         SSL_ALL_STRENGTHS,
166         },
167 /* Cipher 18 */
168         {
169         1,
170         SSL3_TXT_ADH_RC4_128_MD5,
171         SSL3_CK_ADH_RC4_128_MD5,
172         SSL_kEDH |SSL_aNULL|SSL_RC4  |SSL_MD5 |SSL_SSLV3,
173         SSL_NOT_EXP,
174         0,
175         128,
176         128,
177         SSL_ALL_CIPHERS,
178         SSL_ALL_STRENGTHS,
179         },
180 /* Cipher 19 */
181         {
182         1,
183         SSL3_TXT_ADH_DES_40_CBC_SHA,
184         SSL3_CK_ADH_DES_40_CBC_SHA,
185         SSL_kEDH |SSL_aNULL|SSL_DES|SSL_SHA1|SSL_SSLV3,
186         SSL_EXPORT|SSL_EXP40,
187         0,
188         40,
189         128,
190         SSL_ALL_CIPHERS,
191         SSL_ALL_STRENGTHS,
192         },
193 /* Cipher 1A */
194         {
195         1,
196         SSL3_TXT_ADH_DES_64_CBC_SHA,
197         SSL3_CK_ADH_DES_64_CBC_SHA,
198         SSL_kEDH |SSL_aNULL|SSL_DES  |SSL_SHA1|SSL_SSLV3,
199         SSL_NOT_EXP,
200         0,
201         56,
202         56,
203         SSL_ALL_CIPHERS,
204         SSL_ALL_STRENGTHS,
205         },
206 /* Cipher 1B */
207         {
208         1,
209         SSL3_TXT_ADH_DES_192_CBC_SHA,
210         SSL3_CK_ADH_DES_192_CBC_SHA,
211         SSL_kEDH |SSL_aNULL|SSL_3DES |SSL_SHA1|SSL_SSLV3,
212         SSL_NOT_EXP,
213         0,
214         168,
215         168,
216         SSL_ALL_CIPHERS,
217         SSL_ALL_STRENGTHS,
218         },
219
220 /* RSA again */
221 /* Cipher 03 */
222         {
223         1,
224         SSL3_TXT_RSA_RC4_40_MD5,
225         SSL3_CK_RSA_RC4_40_MD5,
226         SSL_kRSA|SSL_aRSA|SSL_RC4  |SSL_MD5 |SSL_SSLV3,
227         SSL_EXPORT|SSL_EXP40,
228         0,
229         40,
230         128,
231         SSL_ALL_CIPHERS,
232         SSL_ALL_STRENGTHS,
233         },
234 /* Cipher 04 */
235         {
236         1,
237         SSL3_TXT_RSA_RC4_128_MD5,
238         SSL3_CK_RSA_RC4_128_MD5,
239         SSL_kRSA|SSL_aRSA|SSL_RC4  |SSL_MD5|SSL_SSLV3,
240         SSL_NOT_EXP|SSL_MEDIUM,
241         0,
242         128,
243         128,
244         SSL_ALL_CIPHERS,
245         SSL_ALL_STRENGTHS,
246         },
247 /* Cipher 05 */
248         {
249         1,
250         SSL3_TXT_RSA_RC4_128_SHA,
251         SSL3_CK_RSA_RC4_128_SHA,
252         SSL_kRSA|SSL_aRSA|SSL_RC4  |SSL_SHA1|SSL_SSLV3,
253         SSL_NOT_EXP|SSL_MEDIUM,
254         0,
255         128,
256         128,
257         SSL_ALL_CIPHERS,
258         SSL_ALL_STRENGTHS,
259         },
260 /* Cipher 06 */
261         {
262         1,
263         SSL3_TXT_RSA_RC2_40_MD5,
264         SSL3_CK_RSA_RC2_40_MD5,
265         SSL_kRSA|SSL_aRSA|SSL_RC2  |SSL_MD5 |SSL_SSLV3,
266         SSL_EXPORT|SSL_EXP40,
267         0,
268         40,
269         128,
270         SSL_ALL_CIPHERS,
271         SSL_ALL_STRENGTHS,
272         },
273 /* Cipher 07 */
274         {
275         1,
276         SSL3_TXT_RSA_IDEA_128_SHA,
277         SSL3_CK_RSA_IDEA_128_SHA,
278         SSL_kRSA|SSL_aRSA|SSL_IDEA |SSL_SHA1|SSL_SSLV3,
279         SSL_NOT_EXP|SSL_MEDIUM,
280         0,
281         128,
282         128,
283         SSL_ALL_CIPHERS,
284         SSL_ALL_STRENGTHS,
285         },
286 /* Cipher 08 */
287         {
288         1,
289         SSL3_TXT_RSA_DES_40_CBC_SHA,
290         SSL3_CK_RSA_DES_40_CBC_SHA,
291         SSL_kRSA|SSL_aRSA|SSL_DES|SSL_SHA1|SSL_SSLV3,
292         SSL_EXPORT|SSL_EXP40,
293         0,
294         40,
295         56,
296         SSL_ALL_CIPHERS,
297         SSL_ALL_STRENGTHS,
298         },
299 /* Cipher 09 */
300         {
301         1,
302         SSL3_TXT_RSA_DES_64_CBC_SHA,
303         SSL3_CK_RSA_DES_64_CBC_SHA,
304         SSL_kRSA|SSL_aRSA|SSL_DES  |SSL_SHA1|SSL_SSLV3,
305         SSL_NOT_EXP|SSL_LOW,
306         0,
307         56,
308         56,
309         SSL_ALL_CIPHERS,
310         SSL_ALL_STRENGTHS,
311         },
312 /* Cipher 0A */
313         {
314         1,
315         SSL3_TXT_RSA_DES_192_CBC3_SHA,
316         SSL3_CK_RSA_DES_192_CBC3_SHA,
317         SSL_kRSA|SSL_aRSA|SSL_3DES |SSL_SHA1|SSL_SSLV3,
318         SSL_NOT_EXP|SSL_HIGH,
319         0,
320         168,
321         168,
322         SSL_ALL_CIPHERS,
323         SSL_ALL_STRENGTHS,
324         },
325
326 /*  The DH ciphers */
327 /* Cipher 0B */
328         {
329         0,
330         SSL3_TXT_DH_DSS_DES_40_CBC_SHA,
331         SSL3_CK_DH_DSS_DES_40_CBC_SHA,
332         SSL_kDHd |SSL_aDH|SSL_DES|SSL_SHA1|SSL_SSLV3,
333         SSL_EXPORT|SSL_EXP40,
334         0,
335         40,
336         56,
337         SSL_ALL_CIPHERS,
338         SSL_ALL_STRENGTHS,
339         },
340 /* Cipher 0C */
341         {
342         0,
343         SSL3_TXT_DH_DSS_DES_64_CBC_SHA,
344         SSL3_CK_DH_DSS_DES_64_CBC_SHA,
345         SSL_kDHd |SSL_aDH|SSL_DES  |SSL_SHA1|SSL_SSLV3,
346         SSL_NOT_EXP|SSL_LOW,
347         0,
348         56,
349         56,
350         SSL_ALL_CIPHERS,
351         SSL_ALL_STRENGTHS,
352         },
353 /* Cipher 0D */
354         {
355         0,
356         SSL3_TXT_DH_DSS_DES_192_CBC3_SHA,
357         SSL3_CK_DH_DSS_DES_192_CBC3_SHA,
358         SSL_kDHd |SSL_aDH|SSL_3DES |SSL_SHA1|SSL_SSLV3,
359         SSL_NOT_EXP|SSL_HIGH,
360         0,
361         168,
362         168,
363         SSL_ALL_CIPHERS,
364         SSL_ALL_STRENGTHS,
365         },
366 /* Cipher 0E */
367         {
368         0,
369         SSL3_TXT_DH_RSA_DES_40_CBC_SHA,
370         SSL3_CK_DH_RSA_DES_40_CBC_SHA,
371         SSL_kDHr |SSL_aDH|SSL_DES|SSL_SHA1|SSL_SSLV3,
372         SSL_EXPORT|SSL_EXP40,
373         0,
374         40,
375         56,
376         SSL_ALL_CIPHERS,
377         SSL_ALL_STRENGTHS,
378         },
379 /* Cipher 0F */
380         {
381         0,
382         SSL3_TXT_DH_RSA_DES_64_CBC_SHA,
383         SSL3_CK_DH_RSA_DES_64_CBC_SHA,
384         SSL_kDHr |SSL_aDH|SSL_DES  |SSL_SHA1|SSL_SSLV3,
385         SSL_NOT_EXP|SSL_LOW,
386         0,
387         56,
388         56,
389         SSL_ALL_CIPHERS,
390         SSL_ALL_STRENGTHS,
391         },
392 /* Cipher 10 */
393         {
394         0,
395         SSL3_TXT_DH_RSA_DES_192_CBC3_SHA,
396         SSL3_CK_DH_RSA_DES_192_CBC3_SHA,
397         SSL_kDHr |SSL_aDH|SSL_3DES |SSL_SHA1|SSL_SSLV3,
398         SSL_NOT_EXP|SSL_HIGH,
399         0,
400         168,
401         168,
402         SSL_ALL_CIPHERS,
403         SSL_ALL_STRENGTHS,
404         },
405
406 /* The Ephemeral DH ciphers */
407 /* Cipher 11 */
408         {
409         1,
410         SSL3_TXT_EDH_DSS_DES_40_CBC_SHA,
411         SSL3_CK_EDH_DSS_DES_40_CBC_SHA,
412         SSL_kEDH|SSL_aDSS|SSL_DES|SSL_SHA1|SSL_SSLV3,
413         SSL_EXPORT|SSL_EXP40,
414         0,
415         40,
416         56,
417         SSL_ALL_CIPHERS,
418         SSL_ALL_STRENGTHS,
419         },
420 /* Cipher 12 */
421         {
422         1,
423         SSL3_TXT_EDH_DSS_DES_64_CBC_SHA,
424         SSL3_CK_EDH_DSS_DES_64_CBC_SHA,
425         SSL_kEDH|SSL_aDSS|SSL_DES  |SSL_SHA1|SSL_SSLV3,
426         SSL_NOT_EXP|SSL_LOW,
427         0,
428         56,
429         56,
430         SSL_ALL_CIPHERS,
431         SSL_ALL_STRENGTHS,
432         },
433 /* Cipher 13 */
434         {
435         1,
436         SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA,
437         SSL3_CK_EDH_DSS_DES_192_CBC3_SHA,
438         SSL_kEDH|SSL_aDSS|SSL_3DES |SSL_SHA1|SSL_SSLV3,
439         SSL_NOT_EXP|SSL_HIGH,
440         0,
441         168,
442         168,
443         SSL_ALL_CIPHERS,
444         SSL_ALL_STRENGTHS,
445         },
446 /* Cipher 14 */
447         {
448         1,
449         SSL3_TXT_EDH_RSA_DES_40_CBC_SHA,
450         SSL3_CK_EDH_RSA_DES_40_CBC_SHA,
451         SSL_kEDH|SSL_aRSA|SSL_DES|SSL_SHA1|SSL_SSLV3,
452         SSL_EXPORT|SSL_EXP40,
453         0,
454         40,
455         56,
456         SSL_ALL_CIPHERS,
457         SSL_ALL_STRENGTHS,
458         },
459 /* Cipher 15 */
460         {
461         1,
462         SSL3_TXT_EDH_RSA_DES_64_CBC_SHA,
463         SSL3_CK_EDH_RSA_DES_64_CBC_SHA,
464         SSL_kEDH|SSL_aRSA|SSL_DES  |SSL_SHA1|SSL_SSLV3,
465         SSL_NOT_EXP|SSL_LOW,
466         0,
467         56,
468         56,
469         SSL_ALL_CIPHERS,
470         SSL_ALL_STRENGTHS,
471         },
472 /* Cipher 16 */
473         {
474         1,
475         SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA,
476         SSL3_CK_EDH_RSA_DES_192_CBC3_SHA,
477         SSL_kEDH|SSL_aRSA|SSL_3DES |SSL_SHA1|SSL_SSLV3,
478         SSL_NOT_EXP|SSL_HIGH,
479         0,
480         168,
481         168,
482         SSL_ALL_CIPHERS,
483         SSL_ALL_STRENGTHS,
484         },
485
486 /* Fortezza */
487 /* Cipher 1C */
488         {
489         0,
490         SSL3_TXT_FZA_DMS_NULL_SHA,
491         SSL3_CK_FZA_DMS_NULL_SHA,
492         SSL_kFZA|SSL_aFZA |SSL_eNULL |SSL_SHA1|SSL_SSLV3,
493         SSL_NOT_EXP,
494         0,
495         0,
496         0,
497         SSL_ALL_CIPHERS,
498         SSL_ALL_STRENGTHS,
499         },
500
501 /* Cipher 1D */
502         {
503         0,
504         SSL3_TXT_FZA_DMS_FZA_SHA,
505         SSL3_CK_FZA_DMS_FZA_SHA,
506         SSL_kFZA|SSL_aFZA |SSL_eFZA |SSL_SHA1|SSL_SSLV3,
507         SSL_NOT_EXP,
508         0,
509         0,
510         0,
511         SSL_ALL_CIPHERS,
512         SSL_ALL_STRENGTHS,
513         },
514
515 /* Cipher 1E */
516         {
517         0,
518         SSL3_TXT_FZA_DMS_RC4_SHA,
519         SSL3_CK_FZA_DMS_RC4_SHA,
520         SSL_kFZA|SSL_aFZA |SSL_RC4  |SSL_SHA1|SSL_SSLV3,
521         SSL_NOT_EXP,
522         0,
523         128,
524         128,
525         SSL_ALL_CIPHERS,
526         SSL_ALL_STRENGTHS,
527         },
528
529 #ifndef NO_KRB5
530 /* The Kerberos ciphers
531 ** 20000107 VRS: And the first shall be last,
532 ** in hopes of avoiding the lynx ssl renegotiation problem.
533 */
534 /* Cipher 21 VRS */
535         {
536         1,
537         SSL3_TXT_KRB5_DES_40_CBC_SHA,
538         SSL3_CK_KRB5_DES_40_CBC_SHA,
539         SSL_kKRB5|SSL_aKRB5|  SSL_DES|SSL_SHA1   |SSL_SSLV3,
540         SSL_EXPORT|SSL_EXP40,
541         0,
542         40,
543         56,
544         SSL_ALL_CIPHERS,
545         SSL_ALL_STRENGTHS,
546         },
547
548 /* Cipher 22 VRS */
549         {
550         1,
551         SSL3_TXT_KRB5_DES_40_CBC_MD5,
552         SSL3_CK_KRB5_DES_40_CBC_MD5,
553         SSL_kKRB5|SSL_aKRB5|  SSL_DES|SSL_MD5    |SSL_SSLV3,
554         SSL_EXPORT|SSL_EXP40,
555         0,
556         40,
557         56,
558         SSL_ALL_CIPHERS,
559         SSL_ALL_STRENGTHS,
560         },
561
562 /* Cipher 23 VRS */
563         {
564         1,
565         SSL3_TXT_KRB5_DES_64_CBC_SHA,
566         SSL3_CK_KRB5_DES_64_CBC_SHA,
567         SSL_kKRB5|SSL_aKRB5|  SSL_DES|SSL_SHA1   |SSL_SSLV3,
568         SSL_NOT_EXP|SSL_LOW,
569         0,
570         56,
571         56,
572         SSL_ALL_CIPHERS,
573         SSL_ALL_STRENGTHS,
574         },
575
576 /* Cipher 24 VRS */
577         {
578         1,
579         SSL3_TXT_KRB5_DES_64_CBC_MD5,
580         SSL3_CK_KRB5_DES_64_CBC_MD5,
581         SSL_kKRB5|SSL_aKRB5|  SSL_DES|SSL_MD5    |SSL_SSLV3,
582         SSL_NOT_EXP|SSL_LOW,
583         0,
584         56,
585         56,
586         SSL_ALL_CIPHERS,
587         SSL_ALL_STRENGTHS,
588         },
589
590 /* Cipher 25 VRS */
591         {
592         1,
593         SSL3_TXT_KRB5_DES_192_CBC3_SHA,
594         SSL3_CK_KRB5_DES_192_CBC3_SHA,
595         SSL_kKRB5|SSL_aKRB5|  SSL_3DES|SSL_SHA1  |SSL_SSLV3,
596         SSL_NOT_EXP|SSL_HIGH,
597         0,
598         112,
599         168,
600         SSL_ALL_CIPHERS,
601         SSL_ALL_STRENGTHS,
602         },
603
604 /* Cipher 26 VRS */
605         {
606         1,
607         SSL3_TXT_KRB5_DES_192_CBC3_MD5,
608         SSL3_CK_KRB5_DES_192_CBC3_MD5,
609         SSL_kKRB5|SSL_aKRB5|  SSL_3DES|SSL_MD5   |SSL_SSLV3,
610         SSL_NOT_EXP|SSL_HIGH,
611         0,
612         112,
613         168,
614         SSL_ALL_CIPHERS,
615         SSL_ALL_STRENGTHS,
616         },
617 #endif  /* NO_KRB5 */
618 #if TLS1_ALLOW_EXPERIMENTAL_CIPHERSUITES
619         /* New TLS Export CipherSuites */
620         /* Cipher 60 */
621             {
622             1,
623             TLS1_TXT_RSA_EXPORT1024_WITH_RC4_56_MD5,
624             TLS1_CK_RSA_EXPORT1024_WITH_RC4_56_MD5,
625             SSL_kRSA|SSL_aRSA|SSL_RC4|SSL_MD5|SSL_TLSV1,
626             SSL_EXPORT|SSL_EXP56,
627             0,
628             56,
629             128,
630             SSL_ALL_CIPHERS,
631             SSL_ALL_STRENGTHS,
632             },
633         /* Cipher 61 */
634             {
635             1,
636             TLS1_TXT_RSA_EXPORT1024_WITH_RC2_CBC_56_MD5,
637             TLS1_CK_RSA_EXPORT1024_WITH_RC2_CBC_56_MD5,
638             SSL_kRSA|SSL_aRSA|SSL_RC2|SSL_MD5|SSL_TLSV1,
639             SSL_EXPORT|SSL_EXP56,
640             0,
641             56,
642             128,
643             SSL_ALL_CIPHERS,
644             SSL_ALL_STRENGTHS,
645             },
646         /* Cipher 62 */
647             {
648             1,
649             TLS1_TXT_RSA_EXPORT1024_WITH_DES_CBC_SHA,
650             TLS1_CK_RSA_EXPORT1024_WITH_DES_CBC_SHA,
651             SSL_kRSA|SSL_aRSA|SSL_DES|SSL_SHA|SSL_TLSV1,
652             SSL_EXPORT|SSL_EXP56,
653             0,
654             56,
655             56,
656             SSL_ALL_CIPHERS,
657             SSL_ALL_STRENGTHS,
658             },
659         /* Cipher 63 */
660             {
661             1,
662             TLS1_TXT_DHE_DSS_EXPORT1024_WITH_DES_CBC_SHA,
663             TLS1_CK_DHE_DSS_EXPORT1024_WITH_DES_CBC_SHA,
664             SSL_kEDH|SSL_aDSS|SSL_DES|SSL_SHA|SSL_TLSV1,
665             SSL_EXPORT|SSL_EXP56,
666             0,
667             56,
668             56,
669             SSL_ALL_CIPHERS,
670             SSL_ALL_STRENGTHS,
671             },
672         /* Cipher 64 */
673             {
674             1,
675             TLS1_TXT_RSA_EXPORT1024_WITH_RC4_56_SHA,
676             TLS1_CK_RSA_EXPORT1024_WITH_RC4_56_SHA,
677             SSL_kRSA|SSL_aRSA|SSL_RC4|SSL_SHA|SSL_TLSV1,
678             SSL_EXPORT|SSL_EXP56,
679             0,
680             56,
681             128,
682             SSL_ALL_CIPHERS,
683             SSL_ALL_STRENGTHS,
684             },
685         /* Cipher 65 */
686             {
687             1,
688             TLS1_TXT_DHE_DSS_EXPORT1024_WITH_RC4_56_SHA,
689             TLS1_CK_DHE_DSS_EXPORT1024_WITH_RC4_56_SHA,
690             SSL_kEDH|SSL_aDSS|SSL_RC4|SSL_SHA|SSL_TLSV1,
691             SSL_EXPORT|SSL_EXP56,
692             0,
693             56,
694             128,
695             SSL_ALL_CIPHERS,
696             SSL_ALL_STRENGTHS,
697             },
698         /* Cipher 66 */
699             {
700             1,
701             TLS1_TXT_DHE_DSS_WITH_RC4_128_SHA,
702             TLS1_CK_DHE_DSS_WITH_RC4_128_SHA,
703             SSL_kEDH|SSL_aDSS|SSL_RC4|SSL_SHA|SSL_TLSV1,
704             SSL_NOT_EXP,
705             0,
706             128,
707             128,
708             SSL_ALL_CIPHERS,
709             SSL_ALL_STRENGTHS
710             },
711 #endif
712
713 /* end of list */
714         };
715
716 static SSL3_ENC_METHOD SSLv3_enc_data={
717         ssl3_enc,
718         ssl3_mac,
719         ssl3_setup_key_block,
720         ssl3_generate_master_secret,
721         ssl3_change_cipher_state,
722         ssl3_final_finish_mac,
723         MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
724         ssl3_cert_verify_mac,
725         SSL3_MD_CLIENT_FINISHED_CONST,4,
726         SSL3_MD_SERVER_FINISHED_CONST,4,
727         ssl3_alert_code,
728         };
729
730 static SSL_METHOD SSLv3_data= {
731         SSL3_VERSION,
732         ssl3_new,
733         ssl3_clear,
734         ssl3_free,
735         ssl_undefined_function,
736         ssl_undefined_function,
737         ssl3_read,
738         ssl3_peek,
739         ssl3_write,
740         ssl3_shutdown,
741         ssl3_renegotiate,
742         ssl3_renegotiate_check,
743         ssl3_ctrl,
744         ssl3_ctx_ctrl,
745         ssl3_get_cipher_by_char,
746         ssl3_put_cipher_by_char,
747         ssl3_pending,
748         ssl3_num_ciphers,
749         ssl3_get_cipher,
750         ssl_bad_method,
751         ssl3_default_timeout,
752         &SSLv3_enc_data,
753         ssl_undefined_function,
754         ssl3_callback_ctrl,
755         ssl3_ctx_callback_ctrl,
756         };
757
758 static long ssl3_default_timeout(void)
759         {
760         /* 2 hours, the 24 hours mentioned in the SSLv3 spec
761          * is way too long for http, the cache would over fill */
762         return(60*60*2);
763         }
764
765 SSL_METHOD *sslv3_base_method(void)
766         {
767         return(&SSLv3_data);
768         }
769
770 int ssl3_num_ciphers(void)
771         {
772         return(SSL3_NUM_CIPHERS);
773         }
774
775 SSL_CIPHER *ssl3_get_cipher(unsigned int u)
776         {
777         if (u < SSL3_NUM_CIPHERS)
778                 return(&(ssl3_ciphers[SSL3_NUM_CIPHERS-1-u]));
779         else
780                 return(NULL);
781         }
782
783 int ssl3_pending(SSL *s)
784         {
785         return (s->s3->rrec.type == SSL3_RT_APPLICATION_DATA) ? s->s3->rrec.length : 0;
786         }
787
788 int ssl3_new(SSL *s)
789         {
790         SSL3_STATE *s3;
791
792         if ((s3=OPENSSL_malloc(sizeof *s3)) == NULL) goto err;
793         memset(s3,0,sizeof *s3);
794
795         s->s3=s3;
796
797         s->method->ssl_clear(s);
798         return(1);
799 err:
800         return(0);
801         }
802
803 void ssl3_free(SSL *s)
804         {
805         if(s == NULL)
806             return;
807
808         ssl3_cleanup_key_block(s);
809         if (s->s3->rbuf.buf != NULL)
810                 OPENSSL_free(s->s3->rbuf.buf);
811         if (s->s3->wbuf.buf != NULL)
812                 OPENSSL_free(s->s3->wbuf.buf);
813         if (s->s3->rrec.comp != NULL)
814                 OPENSSL_free(s->s3->rrec.comp);
815 #ifndef NO_DH
816         if (s->s3->tmp.dh != NULL)
817                 DH_free(s->s3->tmp.dh);
818 #endif
819         if (s->s3->tmp.ca_names != NULL)
820                 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
821         memset(s->s3,0,sizeof *s->s3);
822         OPENSSL_free(s->s3);
823         s->s3=NULL;
824         }
825
826 void ssl3_clear(SSL *s)
827         {
828         unsigned char *rp,*wp;
829
830         ssl3_cleanup_key_block(s);
831         if (s->s3->tmp.ca_names != NULL)
832                 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
833
834         if (s->s3->rrec.comp != NULL)
835                 {
836                 OPENSSL_free(s->s3->rrec.comp);
837                 s->s3->rrec.comp=NULL;
838                 }
839 #ifndef NO_DH
840         if (s->s3->tmp.dh != NULL)
841                 DH_free(s->s3->tmp.dh);
842 #endif
843
844         rp=s->s3->rbuf.buf;
845         wp=s->s3->wbuf.buf;
846
847         memset(s->s3,0,sizeof *s->s3);
848         if (rp != NULL) s->s3->rbuf.buf=rp;
849         if (wp != NULL) s->s3->wbuf.buf=wp;
850
851         ssl_free_wbio_buffer(s);
852
853         s->packet_length=0;
854         s->s3->renegotiate=0;
855         s->s3->total_renegotiations=0;
856         s->s3->num_renegotiations=0;
857         s->s3->in_read_app_data=0;
858         s->version=SSL3_VERSION;
859         }
860
861 long ssl3_ctrl(SSL *s, int cmd, long larg, char *parg)
862         {
863         int ret=0;
864
865 #if !defined(NO_DSA) || !defined(NO_RSA)
866         if (
867 #ifndef NO_RSA
868             cmd == SSL_CTRL_SET_TMP_RSA ||
869             cmd == SSL_CTRL_SET_TMP_RSA_CB ||
870 #endif
871 #ifndef NO_DSA
872             cmd == SSL_CTRL_SET_TMP_DH ||
873             cmd == SSL_CTRL_SET_TMP_DH_CB ||
874 #endif
875                 0)
876                 {
877                 if (!ssl_cert_inst(&s->cert))
878                         {
879                         SSLerr(SSL_F_SSL3_CTRL, ERR_R_MALLOC_FAILURE);
880                         return(0);
881                         }
882                 }
883 #endif
884
885         switch (cmd)
886                 {
887         case SSL_CTRL_GET_SESSION_REUSED:
888                 ret=s->hit;
889                 break;
890         case SSL_CTRL_GET_CLIENT_CERT_REQUEST:
891                 break;
892         case SSL_CTRL_GET_NUM_RENEGOTIATIONS:
893                 ret=s->s3->num_renegotiations;
894                 break;
895         case SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS:
896                 ret=s->s3->num_renegotiations;
897                 s->s3->num_renegotiations=0;
898                 break;
899         case SSL_CTRL_GET_TOTAL_RENEGOTIATIONS:
900                 ret=s->s3->total_renegotiations;
901                 break;
902         case SSL_CTRL_GET_FLAGS:
903                 ret=(int)(s->s3->flags);
904                 break;
905 #ifndef NO_RSA
906         case SSL_CTRL_NEED_TMP_RSA:
907                 if ((s->cert != NULL) && (s->cert->rsa_tmp == NULL) &&
908                     ((s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL) ||
909                      (EVP_PKEY_size(s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey) > (512/8))))
910                         ret = 1;
911                 break;
912         case SSL_CTRL_SET_TMP_RSA:
913                 {
914                         RSA *rsa = (RSA *)parg;
915                         if (rsa == NULL)
916                                 {
917                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_PASSED_NULL_PARAMETER);
918                                 return(ret);
919                                 }
920                         if ((rsa = RSAPrivateKey_dup(rsa)) == NULL)
921                                 {
922                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_RSA_LIB);
923                                 return(ret);
924                                 }
925                         if (s->cert->rsa_tmp != NULL)
926                                 RSA_free(s->cert->rsa_tmp);
927                         s->cert->rsa_tmp = rsa;
928                         ret = 1;
929                 }
930                 break;
931         case SSL_CTRL_SET_TMP_RSA_CB:
932                 {
933                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
934                 return(ret);
935                 }
936                 break;
937 #endif
938 #ifndef NO_DH
939         case SSL_CTRL_SET_TMP_DH:
940                 {
941                         DH *dh = (DH *)parg;
942                         if (dh == NULL)
943                                 {
944                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_PASSED_NULL_PARAMETER);
945                                 return(ret);
946                                 }
947                         if ((dh = DHparams_dup(dh)) == NULL)
948                                 {
949                                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_DH_LIB);
950                                 return(ret);
951                                 }
952                         if (!(s->options & SSL_OP_SINGLE_DH_USE))
953                                 {
954                                 if (!DH_generate_key(dh))
955                                         {
956                                         DH_free(dh);
957                                         SSLerr(SSL_F_SSL3_CTRL, ERR_R_DH_LIB);
958                                         return(ret);
959                                         }
960                                 }
961                         if (s->cert->dh_tmp != NULL)
962                                 DH_free(s->cert->dh_tmp);
963                         s->cert->dh_tmp = dh;
964                         ret = 1;
965                 }
966                 break;
967         case SSL_CTRL_SET_TMP_DH_CB:
968                 {
969                 SSLerr(SSL_F_SSL3_CTRL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
970                 return(ret);
971                 }
972                 break;
973 #endif
974         default:
975                 break;
976                 }
977         return(ret);
978         }
979
980 long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp)())
981         {
982         int ret=0;
983
984 #if !defined(NO_DSA) || !defined(NO_RSA)
985         if (
986 #ifndef NO_RSA
987             cmd == SSL_CTRL_SET_TMP_RSA_CB ||
988 #endif
989 #ifndef NO_DSA
990             cmd == SSL_CTRL_SET_TMP_DH_CB ||
991 #endif
992                 0)
993                 {
994                 if (!ssl_cert_inst(&s->cert))
995                         {
996                         SSLerr(SSL_F_SSL3_CALLBACK_CTRL, ERR_R_MALLOC_FAILURE);
997                         return(0);
998                         }
999                 }
1000 #endif
1001
1002         switch (cmd)
1003                 {
1004 #ifndef NO_RSA
1005         case SSL_CTRL_SET_TMP_RSA_CB:
1006                 {
1007                 s->cert->rsa_tmp_cb = (RSA *(*)(SSL *, int, int))fp;
1008                 }
1009                 break;
1010 #endif
1011 #ifndef NO_DH
1012         case SSL_CTRL_SET_TMP_DH_CB:
1013                 {
1014                 s->cert->dh_tmp_cb = (DH *(*)(SSL *, int, int))fp;
1015                 }
1016                 break;
1017 #endif
1018         default:
1019                 break;
1020                 }
1021         return(ret);
1022         }
1023
1024 long ssl3_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, char *parg)
1025         {
1026         CERT *cert;
1027
1028         cert=ctx->cert;
1029
1030         switch (cmd)
1031                 {
1032 #ifndef NO_RSA
1033         case SSL_CTRL_NEED_TMP_RSA:
1034                 if (    (cert->rsa_tmp == NULL) &&
1035                         ((cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL) ||
1036                          (EVP_PKEY_size(cert->pkeys[SSL_PKEY_RSA_ENC].privatekey) > (512/8)))
1037                         )
1038                         return(1);
1039                 else
1040                         return(0);
1041                 /* break; */
1042         case SSL_CTRL_SET_TMP_RSA:
1043                 {
1044                 RSA *rsa;
1045                 int i;
1046
1047                 rsa=(RSA *)parg;
1048                 i=1;
1049                 if (rsa == NULL)
1050                         i=0;
1051                 else
1052                         {
1053                         if ((rsa=RSAPrivateKey_dup(rsa)) == NULL)
1054                                 i=0;
1055                         }
1056                 if (!i)
1057                         {
1058                         SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_RSA_LIB);
1059                         return(0);
1060                         }
1061                 else
1062                         {
1063                         if (cert->rsa_tmp != NULL)
1064                                 RSA_free(cert->rsa_tmp);
1065                         cert->rsa_tmp=rsa;
1066                         return(1);
1067                         }
1068                 }
1069                 /* break; */
1070         case SSL_CTRL_SET_TMP_RSA_CB:
1071                 {
1072                 SSLerr(SSL_F_SSL3_CTX_CTRL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1073                 return(0);
1074                 }
1075                 break;
1076 #endif
1077 #ifndef NO_DH
1078         case SSL_CTRL_SET_TMP_DH:
1079                 {
1080                 DH *new=NULL,*dh;
1081
1082                 dh=(DH *)parg;
1083                 if ((new=DHparams_dup(dh)) == NULL)
1084                         {
1085                         SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_DH_LIB);
1086                         return 0;
1087                         }
1088                 if (!(ctx->options & SSL_OP_SINGLE_DH_USE))
1089                         {
1090                         if (!DH_generate_key(new))
1091                                 {
1092                                 SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_DH_LIB);
1093                                 DH_free(new);
1094                                 return 0;
1095                                 }
1096                         }
1097                 if (cert->dh_tmp != NULL)
1098                         DH_free(cert->dh_tmp);
1099                 cert->dh_tmp=new;
1100                 return 1;
1101                 }
1102                 /*break; */
1103         case SSL_CTRL_SET_TMP_DH_CB:
1104                 {
1105                 SSLerr(SSL_F_SSL3_CTX_CTRL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1106                 return(0);
1107                 }
1108                 break;
1109 #endif
1110         /* A Thawte special :-) */
1111         case SSL_CTRL_EXTRA_CHAIN_CERT:
1112                 if (ctx->extra_certs == NULL)
1113                         {
1114                         if ((ctx->extra_certs=sk_X509_new_null()) == NULL)
1115                                 return(0);
1116                         }
1117                 sk_X509_push(ctx->extra_certs,(X509 *)parg);
1118                 break;
1119
1120         default:
1121                 return(0);
1122                 }
1123         return(1);
1124         }
1125
1126 long ssl3_ctx_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)())
1127         {
1128         CERT *cert;
1129
1130         cert=ctx->cert;
1131
1132         switch (cmd)
1133                 {
1134 #ifndef NO_RSA
1135         case SSL_CTRL_SET_TMP_RSA_CB:
1136                 {
1137                 cert->rsa_tmp_cb = (RSA *(*)(SSL *, int, int))fp;
1138                 }
1139                 break;
1140 #endif
1141 #ifndef NO_DH
1142         case SSL_CTRL_SET_TMP_DH_CB:
1143                 {
1144                 cert->dh_tmp_cb = (DH *(*)(SSL *, int, int))fp;
1145                 }
1146                 break;
1147 #endif
1148         default:
1149                 return(0);
1150                 }
1151         return(1);
1152         }
1153
1154 /* This function needs to check if the ciphers required are actually
1155  * available */
1156 SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p)
1157         {
1158         static int init=1;
1159         static SSL_CIPHER *sorted[SSL3_NUM_CIPHERS];
1160         SSL_CIPHER c,*cp= &c,**cpp;
1161         unsigned long id;
1162         int i;
1163
1164         if (init)
1165                 {
1166                 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
1167
1168                 for (i=0; i<SSL3_NUM_CIPHERS; i++)
1169                         sorted[i]= &(ssl3_ciphers[i]);
1170
1171                 qsort(  (char *)sorted,
1172                         SSL3_NUM_CIPHERS,sizeof(SSL_CIPHER *),
1173                         FP_ICC ssl_cipher_ptr_id_cmp);
1174
1175                 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
1176
1177                 init=0;
1178                 }
1179
1180         id=0x03000000L|((unsigned long)p[0]<<8L)|(unsigned long)p[1];
1181         c.id=id;
1182         cpp=(SSL_CIPHER **)OBJ_bsearch((char *)&cp,
1183                 (char *)sorted,
1184                 SSL3_NUM_CIPHERS,sizeof(SSL_CIPHER *),
1185                 FP_ICC ssl_cipher_ptr_id_cmp);
1186         if ((cpp == NULL) || !(*cpp)->valid)
1187                 return(NULL);
1188         else
1189                 return(*cpp);
1190         }
1191
1192 int ssl3_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p)
1193         {
1194         long l;
1195
1196         if (p != NULL)
1197                 {
1198                 l=c->id;
1199                 if ((l & 0xff000000) != 0x03000000) return(0);
1200                 p[0]=((unsigned char)(l>> 8L))&0xFF;
1201                 p[1]=((unsigned char)(l     ))&0xFF;
1202                 }
1203         return(2);
1204         }
1205
1206 SSL_CIPHER *ssl3_choose_cipher(SSL *s, STACK_OF(SSL_CIPHER) *have,
1207              STACK_OF(SSL_CIPHER) *pref)
1208         {
1209         SSL_CIPHER *c,*ret=NULL;
1210         int i,j,ok;
1211         CERT *cert;
1212         unsigned long alg,mask,emask;
1213
1214         /* Let's see which ciphers we can support */
1215         cert=s->cert;
1216
1217         sk_SSL_CIPHER_set_cmp_func(pref,ssl_cipher_ptr_id_cmp);
1218
1219 #ifdef CIPHER_DEBUG
1220         printf("Have %d from %p:\n", sk_SSL_CIPHER_num(pref), pref);
1221         for(i=0 ; i < sk_SSL_CIPHER_num(pref) ; ++i)
1222             {
1223             c=sk_SSL_CIPHER_value(pref,i);
1224             printf("%p:%s\n",c,c->name);
1225             }
1226 #endif
1227
1228         for (i=0; i<sk_SSL_CIPHER_num(have); i++)
1229                 {
1230                 c=sk_SSL_CIPHER_value(have,i);
1231
1232                 ssl_set_cert_masks(cert,c);
1233                 mask=cert->mask;
1234                 emask=cert->export_mask;
1235                         
1236 #ifdef KSSL_DEBUG
1237                 printf("ssl3_choose_cipher %d alg= %lx\n", i,c->algorithms);
1238 #endif    /* KSSL_DEBUG */
1239
1240                 alg=c->algorithms&(SSL_MKEY_MASK|SSL_AUTH_MASK);
1241                 if (SSL_C_IS_EXPORT(c))
1242                         {
1243                         ok=((alg & emask) == alg)?1:0;
1244 #ifdef CIPHER_DEBUG
1245                         printf("%d:[%08lX:%08lX]%p:%s (export)\n",ok,alg,emask,
1246                                c,c->name);
1247 #endif
1248                         }
1249                 else
1250                         {
1251                         ok=((alg & mask) == alg)?1:0;
1252 #ifdef CIPHER_DEBUG
1253                         printf("%d:[%08lX:%08lX]%p:%s\n",ok,alg,mask,c,
1254                                c->name);
1255 #endif
1256                         }
1257
1258                 if (!ok) continue;
1259         
1260                 j=sk_SSL_CIPHER_find(pref,c);
1261                 if (j >= 0)
1262                         {
1263                         ret=sk_SSL_CIPHER_value(pref,j);
1264                         break;
1265                         }
1266                 }
1267         return(ret);
1268         }
1269
1270 int ssl3_get_req_cert_type(SSL *s, unsigned char *p)
1271         {
1272         int ret=0;
1273         unsigned long alg;
1274
1275         alg=s->s3->tmp.new_cipher->algorithms;
1276
1277 #ifndef NO_DH
1278         if (alg & (SSL_kDHr|SSL_kEDH))
1279                 {
1280 #  ifndef NO_RSA
1281                 p[ret++]=SSL3_CT_RSA_FIXED_DH;
1282 #  endif
1283 #  ifndef NO_DSA
1284                 p[ret++]=SSL3_CT_DSS_FIXED_DH;
1285 #  endif
1286                 }
1287         if ((s->version == SSL3_VERSION) &&
1288                 (alg & (SSL_kEDH|SSL_kDHd|SSL_kDHr)))
1289                 {
1290 #  ifndef NO_RSA
1291                 p[ret++]=SSL3_CT_RSA_EPHEMERAL_DH;
1292 #  endif
1293 #  ifndef NO_DSA
1294                 p[ret++]=SSL3_CT_DSS_EPHEMERAL_DH;
1295 #  endif
1296                 }
1297 #endif /* !NO_DH */
1298 #ifndef NO_RSA
1299         p[ret++]=SSL3_CT_RSA_SIGN;
1300 #endif
1301 #ifndef NO_DSA
1302         p[ret++]=SSL3_CT_DSS_SIGN;
1303 #endif
1304         return(ret);
1305         }
1306
1307 int ssl3_shutdown(SSL *s)
1308         {
1309
1310         /* Don't do anything much if we have not done the handshake or
1311          * we don't want to send messages :-) */
1312         if ((s->quiet_shutdown) || (s->state == SSL_ST_BEFORE))
1313                 {
1314                 s->shutdown=(SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1315                 return(1);
1316                 }
1317
1318         if (!(s->shutdown & SSL_SENT_SHUTDOWN))
1319                 {
1320                 s->shutdown|=SSL_SENT_SHUTDOWN;
1321 #if 1
1322                 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_CLOSE_NOTIFY);
1323 #endif
1324                 /* our shutdown alert has been sent now, and if it still needs
1325                  * to be written, s->s3->alert_dispatch will be true */
1326                 }
1327         else if (s->s3->alert_dispatch)
1328                 {
1329                 /* resend it if not sent */
1330 #if 1
1331                 ssl3_dispatch_alert(s);
1332 #endif
1333                 }
1334         else if (!(s->shutdown & SSL_RECEIVED_SHUTDOWN))
1335                 {
1336                 /* If we are waiting for a close from our peer, we are closed */
1337                 ssl3_read_bytes(s,0,NULL,0,0);
1338                 }
1339
1340         if ((s->shutdown == (SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN)) &&
1341                 !s->s3->alert_dispatch)
1342                 return(1);
1343         else
1344                 return(0);
1345         }
1346
1347 int ssl3_write(SSL *s, const void *buf, int len)
1348         {
1349         int ret,n;
1350
1351 #if 0
1352         if (s->shutdown & SSL_SEND_SHUTDOWN)
1353                 {
1354                 s->rwstate=SSL_NOTHING;
1355                 return(0);
1356                 }
1357 #endif
1358         clear_sys_error();
1359         if (s->s3->renegotiate) ssl3_renegotiate_check(s);
1360
1361         /* This is an experimental flag that sends the
1362          * last handshake message in the same packet as the first
1363          * use data - used to see if it helps the TCP protocol during
1364          * session-id reuse */
1365         /* The second test is because the buffer may have been removed */
1366         if ((s->s3->flags & SSL3_FLAGS_POP_BUFFER) && (s->wbio == s->bbio))
1367                 {
1368                 /* First time through, we write into the buffer */
1369                 if (s->s3->delay_buf_pop_ret == 0)
1370                         {
1371                         ret=ssl3_write_bytes(s,SSL3_RT_APPLICATION_DATA,
1372                                              buf,len);
1373                         if (ret <= 0) return(ret);
1374
1375                         s->s3->delay_buf_pop_ret=ret;
1376                         }
1377
1378                 s->rwstate=SSL_WRITING;
1379                 n=BIO_flush(s->wbio);
1380                 if (n <= 0) return(n);
1381                 s->rwstate=SSL_NOTHING;
1382
1383                 /* We have flushed the buffer, so remove it */
1384                 ssl_free_wbio_buffer(s);
1385                 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
1386
1387                 ret=s->s3->delay_buf_pop_ret;
1388                 s->s3->delay_buf_pop_ret=0;
1389                 }
1390         else
1391                 {
1392                 ret=ssl3_write_bytes(s,SSL3_RT_APPLICATION_DATA,
1393                                      buf,len);
1394                 if (ret <= 0) return(ret);
1395                 }
1396
1397         return(ret);
1398         }
1399
1400 static int ssl3_read_internal(SSL *s, void *buf, int len, int peek)
1401         {
1402         int ret;
1403         
1404         clear_sys_error();
1405         if (s->s3->renegotiate) ssl3_renegotiate_check(s);
1406         s->s3->in_read_app_data=1;
1407         ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len,peek);
1408         if ((ret == -1) && (s->s3->in_read_app_data == 0))
1409                 {
1410                 /* ssl3_read_bytes decided to call s->handshake_func, which
1411                  * called ssl3_read_bytes to read handshake data.
1412                  * However, ssl3_read_bytes actually found application data
1413                  * and thinks that application data makes sense here (signalled
1414                  * by resetting 'in_read_app_data', strangely); so disable
1415                  * handshake processing and try to read application data again. */
1416                 s->in_handshake++;
1417                 ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len,peek);
1418                 s->in_handshake--;
1419                 }
1420         else
1421                 s->s3->in_read_app_data=0;
1422
1423         return(ret);
1424         }
1425
1426 int ssl3_read(SSL *s, void *buf, int len)
1427         {
1428         return ssl3_read_internal(s, buf, len, 0);
1429         }
1430
1431 int ssl3_peek(SSL *s, char *buf, int len)
1432         {
1433         return ssl3_read_internal(s, buf, len, 1);
1434         }
1435
1436 int ssl3_renegotiate(SSL *s)
1437         {
1438         if (s->handshake_func == NULL)
1439                 return(1);
1440
1441         if (s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS)
1442                 return(0);
1443
1444         s->s3->renegotiate=1;
1445         return(1);
1446         }
1447
1448 int ssl3_renegotiate_check(SSL *s)
1449         {
1450         int ret=0;
1451
1452         if (s->s3->renegotiate)
1453                 {
1454                 if (    (s->s3->rbuf.left == 0) &&
1455                         (s->s3->wbuf.left == 0) &&
1456                         !SSL_in_init(s))
1457                         {
1458 /*
1459 if we are the server, and we have sent a 'RENEGOTIATE' message, we
1460 need to go to SSL_ST_ACCEPT.
1461 */
1462                         /* SSL_ST_ACCEPT */
1463                         s->state=SSL_ST_RENEGOTIATE;
1464                         s->s3->renegotiate=0;
1465                         s->s3->num_renegotiations++;
1466                         s->s3->total_renegotiations++;
1467                         ret=1;
1468                         }
1469                 }
1470         return(ret);
1471         }
1472