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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#include <stdio.h>
60#include "objects.h"
61#include "ssl_locl.h"
62
63char *ssl3_version_str="SSLv3 part of SSLeay 0.9.0b 29-Jun-1998";
64
65#define SSL3_NUM_CIPHERS (sizeof(ssl3_ciphers)/sizeof(SSL_CIPHER))
66
67#ifndef NOPROTO
68static long ssl3_default_timeout(void );
69#else
70static long ssl3_default_timeout();
71#endif
72
73SSL_CIPHER ssl3_ciphers[]={
74/* The RSA ciphers */
75/* Cipher 01 */
76 {
77 1,
78 SSL3_TXT_RSA_NULL_MD5,
79 SSL3_CK_RSA_NULL_MD5,
80 SSL_kRSA|SSL_aRSA|SSL_eNULL |SSL_MD5|SSL_NOT_EXP|SSL_SSLV3,
81 0,
82 SSL_ALL_CIPHERS,
83 },
84/* Cipher 02 */
85 {
86 1,
87 SSL3_TXT_RSA_NULL_SHA,
88 SSL3_CK_RSA_NULL_SHA,
89 SSL_kRSA|SSL_aRSA|SSL_eNULL |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
90 0,
91 SSL_ALL_CIPHERS,
92 },
93
94/* anon DH */
95/* Cipher 17 */
96 {
97 1,
98 SSL3_TXT_ADH_RC4_40_MD5,
99 SSL3_CK_ADH_RC4_40_MD5,
100 SSL_kEDH |SSL_aNULL|SSL_RC4 |SSL_MD5 |SSL_EXP|SSL_SSLV3,
101 0,
102 SSL_ALL_CIPHERS,
103 },
104/* Cipher 18 */
105 {
106 1,
107 SSL3_TXT_ADH_RC4_128_MD5,
108 SSL3_CK_ADH_RC4_128_MD5,
109 SSL_kEDH |SSL_aNULL|SSL_RC4 |SSL_MD5|SSL_NOT_EXP|SSL_SSLV3,
110 0,
111 SSL_ALL_CIPHERS,
112 },
113/* Cipher 19 */
114 {
115 1,
116 SSL3_TXT_ADH_DES_40_CBC_SHA,
117 SSL3_CK_ADH_DES_40_CBC_SHA,
118 SSL_kEDH |SSL_aNULL|SSL_DES|SSL_SHA1|SSL_EXP|SSL_SSLV3,
119 0,
120 SSL_ALL_CIPHERS,
121 },
122/* Cipher 1A */
123 {
124 1,
125 SSL3_TXT_ADH_DES_64_CBC_SHA,
126 SSL3_CK_ADH_DES_64_CBC_SHA,
127 SSL_kEDH |SSL_aNULL|SSL_DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
128 0,
129 SSL_ALL_CIPHERS,
130 },
131/* Cipher 1B */
132 {
133 1,
134 SSL3_TXT_ADH_DES_192_CBC_SHA,
135 SSL3_CK_ADH_DES_192_CBC_SHA,
136 SSL_kEDH |SSL_aNULL|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
137 0,
138 SSL_ALL_CIPHERS,
139 },
140
141/* RSA again */
142/* Cipher 03 */
143 {
144 1,
145 SSL3_TXT_RSA_RC4_40_MD5,
146 SSL3_CK_RSA_RC4_40_MD5,
147 SSL_kRSA|SSL_aRSA|SSL_RC4 |SSL_MD5 |SSL_EXP|SSL_SSLV3,
148 0,
149 SSL_ALL_CIPHERS,
150 },
151/* Cipher 04 */
152 {
153 1,
154 SSL3_TXT_RSA_RC4_128_MD5,
155 SSL3_CK_RSA_RC4_128_MD5,
156 SSL_kRSA|SSL_aRSA|SSL_RC4 |SSL_MD5|SSL_NOT_EXP|SSL_SSLV3|SSL_MEDIUM,
157 0,
158 SSL_ALL_CIPHERS,
159 },
160/* Cipher 05 */
161 {
162 1,
163 SSL3_TXT_RSA_RC4_128_SHA,
164 SSL3_CK_RSA_RC4_128_SHA,
165 SSL_kRSA|SSL_aRSA|SSL_RC4 |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_MEDIUM,
166 0,
167 SSL_ALL_CIPHERS,
168 },
169/* Cipher 06 */
170 {
171 1,
172 SSL3_TXT_RSA_RC2_40_MD5,
173 SSL3_CK_RSA_RC2_40_MD5,
174 SSL_kRSA|SSL_aRSA|SSL_RC2 |SSL_MD5 |SSL_EXP|SSL_SSLV3,
175 0,
176 SSL_ALL_CIPHERS,
177 },
178/* Cipher 07 */
179 {
180 1,
181 SSL3_TXT_RSA_IDEA_128_SHA,
182 SSL3_CK_RSA_IDEA_128_SHA,
183 SSL_kRSA|SSL_aRSA|SSL_IDEA |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_MEDIUM,
184 0,
185 SSL_ALL_CIPHERS,
186 },
187/* Cipher 08 */
188 {
189 1,
190 SSL3_TXT_RSA_DES_40_CBC_SHA,
191 SSL3_CK_RSA_DES_40_CBC_SHA,
192 SSL_kRSA|SSL_aRSA|SSL_DES|SSL_SHA1|SSL_EXP|SSL_SSLV3,
193 0,
194 SSL_ALL_CIPHERS,
195 },
196/* Cipher 09 */
197 {
198 1,
199 SSL3_TXT_RSA_DES_64_CBC_SHA,
200 SSL3_CK_RSA_DES_64_CBC_SHA,
201 SSL_kRSA|SSL_aRSA|SSL_DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_LOW,
202 0,
203 SSL_ALL_CIPHERS,
204 },
205/* Cipher 0A */
206 {
207 1,
208 SSL3_TXT_RSA_DES_192_CBC3_SHA,
209 SSL3_CK_RSA_DES_192_CBC3_SHA,
210 SSL_kRSA|SSL_aRSA|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_HIGH,
211 0,
212 SSL_ALL_CIPHERS,
213 },
214
215/* The DH ciphers */
216/* Cipher 0B */
217 {
218 0,
219 SSL3_TXT_DH_DSS_DES_40_CBC_SHA,
220 SSL3_CK_DH_DSS_DES_40_CBC_SHA,
221 SSL_kDHd |SSL_aDH|SSL_DES|SSL_SHA1|SSL_EXP|SSL_SSLV3,
222 0,
223 SSL_ALL_CIPHERS,
224 },
225/* Cipher 0C */
226 {
227 0,
228 SSL3_TXT_DH_DSS_DES_64_CBC_SHA,
229 SSL3_CK_DH_DSS_DES_64_CBC_SHA,
230 SSL_kDHd |SSL_aDH|SSL_DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_LOW,
231 0,
232 SSL_ALL_CIPHERS,
233 },
234/* Cipher 0D */
235 {
236 0,
237 SSL3_TXT_DH_DSS_DES_192_CBC3_SHA,
238 SSL3_CK_DH_DSS_DES_192_CBC3_SHA,
239 SSL_kDHd |SSL_aDH|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_HIGH,
240 0,
241 SSL_ALL_CIPHERS,
242 },
243/* Cipher 0E */
244 {
245 0,
246 SSL3_TXT_DH_RSA_DES_40_CBC_SHA,
247 SSL3_CK_DH_RSA_DES_40_CBC_SHA,
248 SSL_kDHr |SSL_aDH|SSL_DES|SSL_SHA1|SSL_EXP|SSL_SSLV3,
249 0,
250 SSL_ALL_CIPHERS,
251 },
252/* Cipher 0F */
253 {
254 0,
255 SSL3_TXT_DH_RSA_DES_64_CBC_SHA,
256 SSL3_CK_DH_RSA_DES_64_CBC_SHA,
257 SSL_kDHr |SSL_aDH|SSL_DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_LOW,
258 0,
259 SSL_ALL_CIPHERS,
260 },
261/* Cipher 10 */
262 {
263 0,
264 SSL3_TXT_DH_RSA_DES_192_CBC3_SHA,
265 SSL3_CK_DH_RSA_DES_192_CBC3_SHA,
266 SSL_kDHr |SSL_aDH|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_HIGH,
267 0,
268 SSL_ALL_CIPHERS,
269 },
270
271/* The Ephemeral DH ciphers */
272/* Cipher 11 */
273 {
274 1,
275 SSL3_TXT_EDH_DSS_DES_40_CBC_SHA,
276 SSL3_CK_EDH_DSS_DES_40_CBC_SHA,
277 SSL_kEDH|SSL_aDSS|SSL_DES|SSL_SHA1|SSL_EXP|SSL_SSLV3,
278 0,
279 SSL_ALL_CIPHERS,
280 },
281/* Cipher 12 */
282 {
283 1,
284 SSL3_TXT_EDH_DSS_DES_64_CBC_SHA,
285 SSL3_CK_EDH_DSS_DES_64_CBC_SHA,
286 SSL_kEDH|SSL_aDSS|SSL_DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_LOW,
287 0,
288 SSL_ALL_CIPHERS,
289 },
290/* Cipher 13 */
291 {
292 1,
293 SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA,
294 SSL3_CK_EDH_DSS_DES_192_CBC3_SHA,
295 SSL_kEDH|SSL_aDSS|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_HIGH,
296 0,
297 SSL_ALL_CIPHERS,
298 },
299/* Cipher 14 */
300 {
301 1,
302 SSL3_TXT_EDH_RSA_DES_40_CBC_SHA,
303 SSL3_CK_EDH_RSA_DES_40_CBC_SHA,
304 SSL_kEDH|SSL_aRSA|SSL_DES|SSL_SHA1|SSL_EXP|SSL_SSLV3,
305 0,
306 SSL_ALL_CIPHERS,
307 },
308/* Cipher 15 */
309 {
310 1,
311 SSL3_TXT_EDH_RSA_DES_64_CBC_SHA,
312 SSL3_CK_EDH_RSA_DES_64_CBC_SHA,
313 SSL_kEDH|SSL_aRSA|SSL_DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_LOW,
314 0,
315 SSL_ALL_CIPHERS,
316 },
317/* Cipher 16 */
318 {
319 1,
320 SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA,
321 SSL3_CK_EDH_RSA_DES_192_CBC3_SHA,
322 SSL_kEDH|SSL_aRSA|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_HIGH,
323 0,
324 SSL_ALL_CIPHERS,
325 },
326
327/* Fortezza */
328/* Cipher 1C */
329 {
330 0,
331 SSL3_TXT_FZA_DMS_NULL_SHA,
332 SSL3_CK_FZA_DMS_NULL_SHA,
333 SSL_kFZA|SSL_aFZA |SSL_eNULL |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
334 0,
335 SSL_ALL_CIPHERS,
336 },
337
338/* Cipher 1D */
339 {
340 0,
341 SSL3_TXT_FZA_DMS_FZA_SHA,
342 SSL3_CK_FZA_DMS_FZA_SHA,
343 SSL_kFZA|SSL_aFZA |SSL_eFZA |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
344 0,
345 SSL_ALL_CIPHERS,
346 },
347
348/* Cipher 1E */
349 {
350 0,
351 SSL3_TXT_FZA_DMS_RC4_SHA,
352 SSL3_CK_FZA_DMS_RC4_SHA,
353 SSL_kFZA|SSL_aFZA |SSL_RC4 |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
354 0,
355 SSL_ALL_CIPHERS,
356 },
357
358/* end of list */
359 };
360
361static SSL3_ENC_METHOD SSLv3_enc_data={
362 ssl3_enc,
363 ssl3_mac,
364 ssl3_setup_key_block,
365 ssl3_generate_master_secret,
366 ssl3_change_cipher_state,
367 ssl3_final_finish_mac,
368 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
369 ssl3_cert_verify_mac,
370 SSL3_MD_CLIENT_FINISHED_CONST,4,
371 SSL3_MD_SERVER_FINISHED_CONST,4,
372 ssl3_alert_code,
373 };
374
375static SSL_METHOD SSLv3_data= {
376 SSL3_VERSION,
377 ssl3_new,
378 ssl3_clear,
379 ssl3_free,
380 ssl_undefined_function,
381 ssl_undefined_function,
382 ssl3_read,
383 ssl3_peek,
384 ssl3_write,
385 ssl3_shutdown,
386 ssl3_renegotiate,
387 ssl3_ctrl,
388 ssl3_ctx_ctrl,
389 ssl3_get_cipher_by_char,
390 ssl3_put_cipher_by_char,
391 ssl3_pending,
392 ssl3_num_ciphers,
393 ssl3_get_cipher,
394 ssl_bad_method,
395 ssl3_default_timeout,
396 &SSLv3_enc_data,
397 };
398
399static long ssl3_default_timeout()
400 {
401 /* 2 hours, the 24 hours mentioned in the SSLv3 spec
402 * is way too long for http, the cache would over fill */
403 return(60*60*2);
404 }
405
406SSL_METHOD *sslv3_base_method()
407 {
408 return(&SSLv3_data);
409 }
410
411int ssl3_num_ciphers()
412 {
413 return(SSL3_NUM_CIPHERS);
414 }
415
416SSL_CIPHER *ssl3_get_cipher(u)
417unsigned int u;
418 {
419 if (u < SSL3_NUM_CIPHERS)
420 return(&(ssl3_ciphers[SSL3_NUM_CIPHERS-1-u]));
421 else
422 return(NULL);
423 }
424
425/* The problem is that it may not be the correct record type */
426int ssl3_pending(s)
427SSL *s;
428 {
429 return(s->s3->rrec.length);
430 }
431
432int ssl3_new(s)
433SSL *s;
434 {
435 SSL3_CTX *s3;
436
437 if ((s3=(SSL3_CTX *)Malloc(sizeof(SSL3_CTX))) == NULL) goto err;
438 memset(s3,0,sizeof(SSL3_CTX));
439
440 s->s3=s3;
441 /*
442 s->s3->tmp.ca_names=NULL;
443 s->s3->tmp.key_block=NULL;
444 s->s3->tmp.key_block_length=0;
445 s->s3->rbuf.buf=NULL;
446 s->s3->wbuf.buf=NULL;
447 */
448
449 s->method->ssl_clear(s);
450 return(1);
451err:
452 return(0);
453 }
454
455void ssl3_free(s)
456SSL *s;
457 {
458 ssl3_cleanup_key_block(s);
459 if (s->s3->rbuf.buf != NULL)
460 Free(s->s3->rbuf.buf);
461 if (s->s3->wbuf.buf != NULL)
462 Free(s->s3->wbuf.buf);
463#ifndef NO_DH
464 if (s->s3->tmp.dh != NULL)
465 DH_free(s->s3->tmp.dh);
466#endif
467 if (s->s3->tmp.ca_names != NULL)
468 sk_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
469 memset(s->s3,0,sizeof(SSL3_CTX));
470 Free(s->s3);
471 s->s3=NULL;
472 }
473
474void ssl3_clear(s)
475SSL *s;
476 {
477 unsigned char *rp,*wp;
478
479 ssl3_cleanup_key_block(s);
480 if (s->s3->tmp.ca_names != NULL)
481 sk_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
482
483 rp=s->s3->rbuf.buf;
484 wp=s->s3->wbuf.buf;
485
486 memset(s->s3,0,sizeof(SSL3_CTX));
487 if (rp != NULL) s->s3->rbuf.buf=rp;
488 if (wp != NULL) s->s3->wbuf.buf=wp;
489 s->packet_length=0;
490 s->s3->renegotiate=0;
491 s->s3->total_renegotiations=0;
492 s->s3->num_renegotiations=0;
493 s->s3->in_read_app_data=0;
494 s->version=SSL3_VERSION;
495 }
496
497long ssl3_ctrl(s,cmd,larg,parg)
498SSL *s;
499int cmd;
500long larg;
501char *parg;
502 {
503 int ret=0;
504
505 switch (cmd)
506 {
507 case SSL_CTRL_GET_SESSION_REUSED:
508 ret=s->hit;
509 break;
510 case SSL_CTRL_GET_CLIENT_CERT_REQUEST:
511 break;
512 case SSL_CTRL_GET_NUM_RENEGOTIATIONS:
513 ret=s->s3->num_renegotiations;
514 break;
515 case SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS:
516 ret=s->s3->num_renegotiations;
517 s->s3->num_renegotiations=0;
518 break;
519 case SSL_CTRL_GET_TOTAL_RENEGOTIATIONS:
520 ret=s->s3->total_renegotiations;
521 break;
522 default:
523 break;
524 }
525 return(ret);
526 }
527
528long ssl3_ctx_ctrl(ctx,cmd,larg,parg)
529SSL_CTX *ctx;
530int cmd;
531long larg;
532char *parg;
533 {
534 CERT *cert;
535
536 cert=ctx->default_cert;
537
538 switch (cmd)
539 {
540#ifndef NO_RSA
541 case SSL_CTRL_NEED_TMP_RSA:
542 if ( (cert->rsa_tmp == NULL) &&
543 ((cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL) ||
544 (EVP_PKEY_size(cert->pkeys[SSL_PKEY_RSA_ENC].privatekey) > (512/8)))
545 )
546 return(1);
547 else
548 return(0);
549 break;
550 case SSL_CTRL_SET_TMP_RSA:
551 {
552 RSA *rsa;
553 int i;
554
555 rsa=(RSA *)parg;
556 i=1;
557 if (rsa == NULL)
558 i=0;
559 else
560 {
561 if ((rsa=RSAPrivateKey_dup(rsa)) == NULL)
562 i=0;
563 }
564 if (!i)
565 {
566 SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_RSA_LIB);
567 return(0);
568 }
569 else
570 {
571 if (cert->rsa_tmp != NULL)
572 RSA_free(cert->rsa_tmp);
573 cert->rsa_tmp=rsa;
574 return(1);
575 }
576 }
577 break;
578 case SSL_CTRL_SET_TMP_RSA_CB:
579 cert->rsa_tmp_cb=(RSA *(*)())parg;
580 break;
581#endif
582#ifndef NO_DH
583 case SSL_CTRL_SET_TMP_DH:
584 {
585 DH *new=NULL,*dh;
586
587 dh=(DH *)parg;
588 if ( ((new=DHparams_dup(dh)) == NULL) ||
589 (!DH_generate_key(new)))
590 {
591 SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_DH_LIB);
592 if (new != NULL) DH_free(new);
593 return(0);
594 }
595 else
596 {
597 if (cert->dh_tmp != NULL)
598 DH_free(cert->dh_tmp);
599 cert->dh_tmp=new;
600 return(1);
601 }
602 }
603 break;
604 case SSL_CTRL_SET_TMP_DH_CB:
605 cert->dh_tmp_cb=(DH *(*)())parg;
606 break;
607#endif
608 default:
609 return(0);
610 }
611 return(1);
612 }
613
614/* This function needs to check if the ciphers required are actually
615 * available */
616SSL_CIPHER *ssl3_get_cipher_by_char(p)
617unsigned char *p;
618 {
619 static int init=1;
620 static SSL_CIPHER *sorted[SSL3_NUM_CIPHERS];
621 SSL_CIPHER c,*cp= &c,**cpp;
622 unsigned long id;
623 int i;
624
625 if (init)
626 {
627 init=0;
628
629 for (i=0; i<SSL3_NUM_CIPHERS; i++)
630 sorted[i]= &(ssl3_ciphers[i]);
631
632 qsort( (char *)sorted,
633 SSL3_NUM_CIPHERS,sizeof(SSL_CIPHER *),
634 FP_ICC ssl_cipher_ptr_id_cmp);
635 }
636
637 id=0x03000000L|((unsigned long)p[0]<<8L)|(unsigned long)p[1];
638 c.id=id;
639 cpp=(SSL_CIPHER **)OBJ_bsearch((char *)&cp,
640 (char *)sorted,
641 SSL3_NUM_CIPHERS,sizeof(SSL_CIPHER *),
642 (int (*)())ssl_cipher_ptr_id_cmp);
643 if ((cpp == NULL) || !(*cpp)->valid)
644 return(NULL);
645 else
646 return(*cpp);
647 }
648
649int ssl3_put_cipher_by_char(c,p)
650SSL_CIPHER *c;
651unsigned char *p;
652 {
653 long l;
654
655 if (p != NULL)
656 {
657 l=c->id;
658 if ((l & 0xff000000) != 0x03000000) return(0);
659 p[0]=((unsigned char)(l>> 8L))&0xFF;
660 p[1]=((unsigned char)(l ))&0xFF;
661 }
662 return(2);
663 }
664
665int ssl3_part_read(s,i)
666SSL *s;
667int i;
668 {
669 s->rwstate=SSL_READING;
670
671 if (i < 0)
672 {
673 return(i);
674 }
675 else
676 {
677 s->init_num+=i;
678 return(0);
679 }
680 }
681
682SSL_CIPHER *ssl3_choose_cipher(s,have,pref)
683SSL *s;
684STACK *have,*pref;
685 {
686 SSL_CIPHER *c,*ret=NULL;
687 int i,j,ok;
688 CERT *cert;
689 unsigned long alg,mask,emask;
690
691 /* Lets see which ciphers we can supported */
692 if (s->cert != NULL)
693 cert=s->cert;
694 else
695 cert=s->ctx->default_cert;
696
697 ssl_set_cert_masks(cert);
698 mask=cert->mask;
699 emask=cert->export_mask;
700
701 sk_set_cmp_func(pref,ssl_cipher_ptr_id_cmp);
702
703 for (i=0; i<sk_num(have); i++)
704 {
705 c=(SSL_CIPHER *)sk_value(have,i);
706 alg=c->algorithms&(SSL_MKEY_MASK|SSL_AUTH_MASK);
707 if (alg & SSL_EXPORT)
708 {
709 ok=((alg & emask) == alg)?1:0;
710#ifdef CIPHER_DEBUG
711 printf("%d:[%08lX:%08lX]%s\n",ok,alg,mask,c->name);
712#endif
713 }
714 else
715 {
716 ok=((alg & mask) == alg)?1:0;
717#ifdef CIPHER_DEBUG
718 printf("%d:[%08lX:%08lX]%s\n",ok,alg,mask,c->name);
719#endif
720 }
721
722 if (!ok) continue;
723
724 j=sk_find(pref,(char *)c);
725 if (j >= 0)
726 {
727 ret=(SSL_CIPHER *)sk_value(pref,j);
728 break;
729 }
730 }
731 return(ret);
732 }
733
734int ssl3_get_req_cert_type(s,p)
735SSL *s;
736unsigned char *p;
737 {
738 int ret=0;
739 unsigned long alg;
740
741 alg=s->s3->tmp.new_cipher->algorithms;
742
743#ifndef NO_DH
744 if (alg & (SSL_kDHr|SSL_kEDH))
745 {
746#ifndef NO_RSA
747 p[ret++]=SSL3_CT_RSA_FIXED_DH;
748#endif
749#ifndef NO_DSA
750 p[ret++]=SSL3_CT_DSS_FIXED_DH;
751#endif
752 }
753 if ((s->version == SSL3_VERSION) &&
754 (alg & (SSL_kEDH|SSL_kDHd|SSL_kDHr)))
755 {
756#ifndef NO_RSA
757 p[ret++]=SSL3_CT_RSA_EPHEMERAL_DH;
758#endif
759#ifndef NO_DSA
760 p[ret++]=SSL3_CT_DSS_EPHEMERAL_DH;
761#endif
762 }
763#endif /* !NO_DH */
764#ifndef NO_RSA
765 p[ret++]=SSL3_CT_RSA_SIGN;
766#endif
767 p[ret++]=SSL3_CT_DSS_SIGN;
768 return(ret);
769 }
770
771int ssl3_shutdown(s)
772SSL *s;
773 {
774
775 /* Don't do anything much if we have not done the handshake or
776 * we don't want to send messages :-) */
777 if ((s->quiet_shutdown) || (s->state == SSL_ST_BEFORE))
778 {
779 s->shutdown=(SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
780 return(1);
781 }
782
783 if (!(s->shutdown & SSL_SENT_SHUTDOWN))
784 {
785 s->shutdown|=SSL_SENT_SHUTDOWN;
786#if 1
787 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_CLOSE_NOTIFY);
788#endif
789 /* our shutdown alert has been sent now, and if it still needs
790 * to be written, s->s3->alert_dispatch will be true */
791 }
792 else if (s->s3->alert_dispatch)
793 {
794 /* resend it if not sent */
795#if 1
796 ssl3_dispatch_alert(s);
797#endif
798 }
799 else if (!(s->shutdown & SSL_RECEIVED_SHUTDOWN))
800 {
801 /* If we are waiting for a close from our peer, we are closed */
802 ssl3_read_bytes(s,0,NULL,0);
803 }
804
805 if ((s->shutdown == (SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN)) &&
806 !s->s3->alert_dispatch)
807 return(1);
808 else
809 return(0);
810 }
811
812int ssl3_write(s,buf,len)
813SSL *s;
814char *buf;
815int len;
816 {
817 int ret,n;
818 BIO *under;
819
820#if 0
821 if (s->shutdown & SSL_SEND_SHUTDOWN)
822 {
823 s->rwstate=SSL_NOTHING;
824 return(0);
825 }
826#endif
827 clear_sys_error();
828 if (s->s3->renegotiate) ssl3_renegotiate_check(s);
829
830 /* This is an experimental flag that sends the
831 * last handshake message in the same packet as the first
832 * use data - used to see if it helps the TCP protocol during
833 * session-id reuse */
834 /* The second test is because the buffer may have been removed */
835 if ((s->s3->flags & SSL3_FLAGS_POP_BUFFER) && (s->wbio == s->bbio))
836 {
837 /* First time through, we write into the buffer */
838 if (s->s3->delay_buf_pop_ret == 0)
839 {
840 ret=ssl3_write_bytes(s,SSL3_RT_APPLICATION_DATA,
841 (char *)buf,len);
842 if (ret <= 0) return(ret);
843
844 s->s3->delay_buf_pop_ret=ret;
845 }
846
847 s->rwstate=SSL_WRITING;
848 n=BIO_flush(s->wbio);
849 if (n <= 0) return(n);
850 s->rwstate=SSL_NOTHING;
851
852 /* We have flushed the buffer */
853 under=BIO_pop(s->wbio);
854 s->wbio=under;
855 BIO_free(s->bbio);
856 s->bbio=NULL;
857 ret=s->s3->delay_buf_pop_ret;
858 s->s3->delay_buf_pop_ret=0;
859
860 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
861 }
862 else
863 {
864 ret=ssl3_write_bytes(s,SSL3_RT_APPLICATION_DATA,
865 (char *)buf,len);
866 if (ret <= 0) return(ret);
867 }
868
869 return(ret);
870 }
871
872int ssl3_read(s,buf,len)
873SSL *s;
874char *buf;
875int len;
876 {
877 int ret;
878
879 clear_sys_error();
880 if (s->s3->renegotiate) ssl3_renegotiate_check(s);
881 s->s3->in_read_app_data=1;
882 ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len);
883 if ((ret == -1) && (s->s3->in_read_app_data == 0))
884 {
885 ERR_get_error(); /* clear the error */
886 s->s3->in_read_app_data=0;
887 s->in_handshake++;
888 ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len);
889 s->in_handshake--;
890 }
891 else
892 s->s3->in_read_app_data=0;
893
894 return(ret);
895 }
896
897int ssl3_peek(s,buf,len)
898SSL *s;
899char *buf;
900int len;
901 {
902 SSL3_RECORD *rr;
903 int n;
904
905 rr= &(s->s3->rrec);
906 if ((rr->length == 0) || (rr->type != SSL3_RT_APPLICATION_DATA))
907 {
908 n=ssl3_read(s,buf,1);
909 if (n <= 0) return(n);
910 rr->length++;
911 rr->off--;
912 }
913
914 if ((unsigned int)len > rr->length)
915 n=rr->length;
916 else
917 n=len;
918 memcpy(buf,&(rr->data[rr->off]),(unsigned int)n);
919 return(n);
920 }
921
922int ssl3_renegotiate(s)
923SSL *s;
924 {
925 if (s->handshake_func == NULL)
926 return(1);
927
928 if (s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS)
929 return(0);
930
931 s->s3->renegotiate=1;
932 return(1);
933 }
934
935int ssl3_renegotiate_check(s)
936SSL *s;
937 {
938 int ret=0;
939
940 if (s->s3->renegotiate)
941 {
942 if ( (s->s3->rbuf.left == 0) &&
943 (s->s3->wbuf.left == 0) &&
944 !SSL_in_init(s))
945 {
946/*
947if we are the server, and we have sent a 'RENEGOTIATE' message, we
948need to go to SSL_ST_ACCEPT.
949*/
950 /* SSL_ST_ACCEPT */
951 s->state=SSL_ST_RENEGOTIATE;
952 s->s3->renegotiate=0;
953 s->s3->num_renegotiations++;
954 s->s3->total_renegotiations++;
955 ret=1;
956 }
957 }
958 return(ret);
959 }
960
961
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