2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
60 #include <openssl/md5.h>
61 #include <openssl/sha.h>
62 #include <openssl/objects.h>
65 const char *ssl3_version_str="SSLv3" OPENSSL_VERSION_PTEXT;
67 #define SSL3_NUM_CIPHERS (sizeof(ssl3_ciphers)/sizeof(SSL_CIPHER))
69 static long ssl3_default_timeout(void );
70 SSL_CIPHER ssl3_ciphers[]={
75 SSL3_TXT_RSA_NULL_MD5,
77 SSL_kRSA|SSL_aRSA|SSL_eNULL |SSL_MD5|SSL_NOT_EXP|SSL_SSLV3,
84 SSL3_TXT_RSA_NULL_SHA,
86 SSL_kRSA|SSL_aRSA|SSL_eNULL |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
95 SSL3_TXT_ADH_RC4_40_MD5,
96 SSL3_CK_ADH_RC4_40_MD5,
97 SSL_kEDH |SSL_aNULL|SSL_RC4 |SSL_MD5 |SSL_EXP40|SSL_SSLV3,
104 SSL3_TXT_ADH_RC4_128_MD5,
105 SSL3_CK_ADH_RC4_128_MD5,
106 SSL_kEDH |SSL_aNULL|SSL_RC4 |SSL_MD5|SSL_NOT_EXP|SSL_SSLV3,
113 SSL3_TXT_ADH_DES_40_CBC_SHA,
114 SSL3_CK_ADH_DES_40_CBC_SHA,
115 SSL_kEDH |SSL_aNULL|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
122 SSL3_TXT_ADH_DES_64_CBC_SHA,
123 SSL3_CK_ADH_DES_64_CBC_SHA,
124 SSL_kEDH |SSL_aNULL|SSL_DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
131 SSL3_TXT_ADH_DES_192_CBC_SHA,
132 SSL3_CK_ADH_DES_192_CBC_SHA,
133 SSL_kEDH |SSL_aNULL|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
142 SSL3_TXT_RSA_RC4_40_MD5,
143 SSL3_CK_RSA_RC4_40_MD5,
144 SSL_kRSA|SSL_aRSA|SSL_RC4 |SSL_MD5 |SSL_EXP40|SSL_SSLV3,
151 SSL3_TXT_RSA_RC4_128_MD5,
152 SSL3_CK_RSA_RC4_128_MD5,
153 SSL_kRSA|SSL_aRSA|SSL_RC4 |SSL_MD5|SSL_NOT_EXP|SSL_SSLV3|SSL_MEDIUM,
160 SSL3_TXT_RSA_RC4_128_SHA,
161 SSL3_CK_RSA_RC4_128_SHA,
162 SSL_kRSA|SSL_aRSA|SSL_RC4 |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_MEDIUM,
169 SSL3_TXT_RSA_RC2_40_MD5,
170 SSL3_CK_RSA_RC2_40_MD5,
171 SSL_kRSA|SSL_aRSA|SSL_RC2 |SSL_MD5 |SSL_EXP40|SSL_SSLV3,
178 SSL3_TXT_RSA_IDEA_128_SHA,
179 SSL3_CK_RSA_IDEA_128_SHA,
180 SSL_kRSA|SSL_aRSA|SSL_IDEA |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_MEDIUM,
187 SSL3_TXT_RSA_DES_40_CBC_SHA,
188 SSL3_CK_RSA_DES_40_CBC_SHA,
189 SSL_kRSA|SSL_aRSA|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
196 SSL3_TXT_RSA_DES_64_CBC_SHA,
197 SSL3_CK_RSA_DES_64_CBC_SHA,
198 SSL_kRSA|SSL_aRSA|SSL_DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_LOW,
205 SSL3_TXT_RSA_DES_192_CBC3_SHA,
206 SSL3_CK_RSA_DES_192_CBC3_SHA,
207 SSL_kRSA|SSL_aRSA|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_HIGH,
216 SSL3_TXT_DH_DSS_DES_40_CBC_SHA,
217 SSL3_CK_DH_DSS_DES_40_CBC_SHA,
218 SSL_kDHd |SSL_aDH|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
225 SSL3_TXT_DH_DSS_DES_64_CBC_SHA,
226 SSL3_CK_DH_DSS_DES_64_CBC_SHA,
227 SSL_kDHd |SSL_aDH|SSL_DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_LOW,
234 SSL3_TXT_DH_DSS_DES_192_CBC3_SHA,
235 SSL3_CK_DH_DSS_DES_192_CBC3_SHA,
236 SSL_kDHd |SSL_aDH|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_HIGH,
243 SSL3_TXT_DH_RSA_DES_40_CBC_SHA,
244 SSL3_CK_DH_RSA_DES_40_CBC_SHA,
245 SSL_kDHr |SSL_aDH|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
252 SSL3_TXT_DH_RSA_DES_64_CBC_SHA,
253 SSL3_CK_DH_RSA_DES_64_CBC_SHA,
254 SSL_kDHr |SSL_aDH|SSL_DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_LOW,
261 SSL3_TXT_DH_RSA_DES_192_CBC3_SHA,
262 SSL3_CK_DH_RSA_DES_192_CBC3_SHA,
263 SSL_kDHr |SSL_aDH|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_HIGH,
268 /* The Ephemeral DH ciphers */
272 SSL3_TXT_EDH_DSS_DES_40_CBC_SHA,
273 SSL3_CK_EDH_DSS_DES_40_CBC_SHA,
274 SSL_kEDH|SSL_aDSS|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
281 SSL3_TXT_EDH_DSS_DES_64_CBC_SHA,
282 SSL3_CK_EDH_DSS_DES_64_CBC_SHA,
283 SSL_kEDH|SSL_aDSS|SSL_DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_LOW,
290 SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA,
291 SSL3_CK_EDH_DSS_DES_192_CBC3_SHA,
292 SSL_kEDH|SSL_aDSS|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_HIGH,
299 SSL3_TXT_EDH_RSA_DES_40_CBC_SHA,
300 SSL3_CK_EDH_RSA_DES_40_CBC_SHA,
301 SSL_kEDH|SSL_aRSA|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
308 SSL3_TXT_EDH_RSA_DES_64_CBC_SHA,
309 SSL3_CK_EDH_RSA_DES_64_CBC_SHA,
310 SSL_kEDH|SSL_aRSA|SSL_DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_LOW,
317 SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA,
318 SSL3_CK_EDH_RSA_DES_192_CBC3_SHA,
319 SSL_kEDH|SSL_aRSA|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3|SSL_HIGH,
328 SSL3_TXT_FZA_DMS_NULL_SHA,
329 SSL3_CK_FZA_DMS_NULL_SHA,
330 SSL_kFZA|SSL_aFZA |SSL_eNULL |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
338 SSL3_TXT_FZA_DMS_FZA_SHA,
339 SSL3_CK_FZA_DMS_FZA_SHA,
340 SSL_kFZA|SSL_aFZA |SSL_eFZA |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
348 SSL3_TXT_FZA_DMS_RC4_SHA,
349 SSL3_CK_FZA_DMS_RC4_SHA,
350 SSL_kFZA|SSL_aFZA |SSL_RC4 |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
355 #if TLS1_ALLOW_EXPERIMENTAL_CIPHERSUITES
356 /* New TLS Export CipherSuites */
360 TLS1_TXT_RSA_EXPORT1024_WITH_RC4_56_MD5,
361 TLS1_CK_RSA_EXPORT1024_WITH_RC4_56_MD5,
362 SSL_kRSA|SSL_aRSA|SSL_RC4|SSL_MD5|SSL_EXP56|SSL_TLSV1,
369 TLS1_TXT_RSA_EXPORT1024_WITH_RC2_CBC_56_MD5,
370 TLS1_CK_RSA_EXPORT1024_WITH_RC2_CBC_56_MD5,
371 SSL_kRSA|SSL_aRSA|SSL_RC2|SSL_MD5|SSL_EXP56|SSL_TLSV1,
378 TLS1_TXT_RSA_EXPORT1024_WITH_DES_CBC_SHA,
379 TLS1_CK_RSA_EXPORT1024_WITH_DES_CBC_SHA,
380 SSL_kRSA|SSL_aRSA|SSL_DES|SSL_SHA|SSL_EXP56|SSL_TLSV1,
387 TLS1_TXT_DHE_DSS_EXPORT1024_WITH_DES_CBC_SHA,
388 TLS1_CK_DHE_DSS_EXPORT1024_WITH_DES_CBC_SHA,
389 SSL_kEDH|SSL_aDSS|SSL_DES|SSL_SHA|SSL_EXP56|SSL_TLSV1,
396 TLS1_TXT_RSA_EXPORT1024_WITH_RC4_56_SHA,
397 TLS1_CK_RSA_EXPORT1024_WITH_RC4_56_SHA,
398 SSL_kRSA|SSL_aRSA|SSL_RC4|SSL_SHA|SSL_EXP56|SSL_TLSV1,
405 TLS1_TXT_DHE_DSS_EXPORT1024_WITH_RC4_56_SHA,
406 TLS1_CK_DHE_DSS_EXPORT1024_WITH_RC4_56_SHA,
407 SSL_kEDH|SSL_aDSS|SSL_RC4|SSL_SHA|SSL_EXP56|SSL_TLSV1,
414 TLS1_TXT_DHE_DSS_WITH_RC4_128_SHA,
415 TLS1_CK_DHE_DSS_WITH_RC4_128_SHA,
416 SSL_kEDH|SSL_aDSS|SSL_RC4|SSL_SHA|SSL_TLSV1,
425 static SSL3_ENC_METHOD SSLv3_enc_data={
428 ssl3_setup_key_block,
429 ssl3_generate_master_secret,
430 ssl3_change_cipher_state,
431 ssl3_final_finish_mac,
432 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
433 ssl3_cert_verify_mac,
434 SSL3_MD_CLIENT_FINISHED_CONST,4,
435 SSL3_MD_SERVER_FINISHED_CONST,4,
439 static SSL_METHOD SSLv3_data= {
444 ssl_undefined_function,
445 ssl_undefined_function,
451 ssl3_renegotiate_check,
454 ssl3_get_cipher_by_char,
455 ssl3_put_cipher_by_char,
460 ssl3_default_timeout,
464 static long ssl3_default_timeout(void)
466 /* 2 hours, the 24 hours mentioned in the SSLv3 spec
467 * is way too long for http, the cache would over fill */
471 SSL_METHOD *sslv3_base_method(void)
476 int ssl3_num_ciphers(void)
478 return(SSL3_NUM_CIPHERS);
481 SSL_CIPHER *ssl3_get_cipher(unsigned int u)
483 if (u < SSL3_NUM_CIPHERS)
484 return(&(ssl3_ciphers[SSL3_NUM_CIPHERS-1-u]));
489 /* The problem is that it may not be the correct record type */
490 int ssl3_pending(SSL *s)
492 return(s->s3->rrec.length);
499 if ((s3=(SSL3_CTX *)Malloc(sizeof(SSL3_CTX))) == NULL) goto err;
500 memset(s3,0,sizeof(SSL3_CTX));
504 s->s3->tmp.ca_names=NULL;
505 s->s3->tmp.key_block=NULL;
506 s->s3->tmp.key_block_length=0;
507 s->s3->rbuf.buf=NULL;
508 s->s3->wbuf.buf=NULL;
511 s->method->ssl_clear(s);
517 void ssl3_free(SSL *s)
522 ssl3_cleanup_key_block(s);
523 if (s->s3->rbuf.buf != NULL)
524 Free(s->s3->rbuf.buf);
525 if (s->s3->wbuf.buf != NULL)
526 Free(s->s3->wbuf.buf);
527 if (s->s3->rrec.comp != NULL)
528 Free(s->s3->rrec.comp);
530 if (s->s3->tmp.dh != NULL)
531 DH_free(s->s3->tmp.dh);
533 if (s->s3->tmp.ca_names != NULL)
534 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
535 memset(s->s3,0,sizeof(SSL3_CTX));
540 void ssl3_clear(SSL *s)
542 unsigned char *rp,*wp;
544 ssl3_cleanup_key_block(s);
545 if (s->s3->tmp.ca_names != NULL)
546 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
548 if (s->s3->rrec.comp != NULL)
550 Free(s->s3->rrec.comp);
551 s->s3->rrec.comp=NULL;
557 memset(s->s3,0,sizeof(SSL3_CTX));
558 if (rp != NULL) s->s3->rbuf.buf=rp;
559 if (wp != NULL) s->s3->wbuf.buf=wp;
561 ssl_free_wbio_buffer(s);
564 s->s3->renegotiate=0;
565 s->s3->total_renegotiations=0;
566 s->s3->num_renegotiations=0;
567 s->s3->in_read_app_data=0;
568 s->version=SSL3_VERSION;
571 long ssl3_ctrl(SSL *s, int cmd, long larg, char *parg)
575 #if !defined(NO_DSA) || !defined(NO_RSA)
578 cmd == SSL_CTRL_SET_TMP_RSA ||
579 cmd == SSL_CTRL_SET_TMP_RSA_CB ||
582 cmd == SSL_CTRL_SET_TMP_DH ||
583 cmd == SSL_CTRL_SET_TMP_DH_CB ||
587 if (!ssl_cert_instantiate(&s->cert, s->ctx->default_cert))
589 SSLerr(SSL_F_SSL3_CTRL, ERR_R_MALLOC_FAILURE);
597 case SSL_CTRL_GET_SESSION_REUSED:
600 case SSL_CTRL_GET_CLIENT_CERT_REQUEST:
602 case SSL_CTRL_GET_NUM_RENEGOTIATIONS:
603 ret=s->s3->num_renegotiations;
605 case SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS:
606 ret=s->s3->num_renegotiations;
607 s->s3->num_renegotiations=0;
609 case SSL_CTRL_GET_TOTAL_RENEGOTIATIONS:
610 ret=s->s3->total_renegotiations;
612 case SSL_CTRL_GET_FLAGS:
613 ret=(int)(s->s3->flags);
616 case SSL_CTRL_NEED_TMP_RSA:
617 if ((s->cert != NULL) && (s->cert->rsa_tmp == NULL) &&
618 ((s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL) ||
619 (EVP_PKEY_size(s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey) > (512/8))))
622 case SSL_CTRL_SET_TMP_RSA:
624 RSA *rsa = (RSA *)parg;
626 SSLerr(SSL_F_SSL3_CTRL, ERR_R_PASSED_NULL_PARAMETER);
629 if ((rsa = RSAPrivateKey_dup(rsa)) == NULL) {
630 SSLerr(SSL_F_SSL3_CTRL, ERR_R_RSA_LIB);
633 if (s->cert->rsa_tmp != NULL)
634 RSA_free(s->cert->rsa_tmp);
635 s->cert->rsa_tmp = rsa;
639 case SSL_CTRL_SET_TMP_RSA_CB:
640 s->cert->rsa_tmp_cb = (RSA *(*)(SSL *, int, int))parg;
644 case SSL_CTRL_SET_TMP_DH:
648 SSLerr(SSL_F_SSL3_CTRL, ERR_R_PASSED_NULL_PARAMETER);
651 if ((dh = DHparams_dup(dh)) == NULL) {
652 SSLerr(SSL_F_SSL3_CTRL, ERR_R_DH_LIB);
655 if (!DH_generate_key(dh)) {
657 SSLerr(SSL_F_SSL3_CTRL, ERR_R_DH_LIB);
660 if (s->cert->dh_tmp != NULL)
661 DH_free(s->cert->dh_tmp);
662 s->cert->dh_tmp = dh;
666 case SSL_CTRL_SET_TMP_DH_CB:
667 s->cert->dh_tmp_cb = (DH *(*)(SSL *, int, int))parg;
676 long ssl3_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, char *parg)
680 cert=ctx->default_cert;
685 case SSL_CTRL_NEED_TMP_RSA:
686 if ( (cert->rsa_tmp == NULL) &&
687 ((cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL) ||
688 (EVP_PKEY_size(cert->pkeys[SSL_PKEY_RSA_ENC].privatekey) > (512/8)))
694 case SSL_CTRL_SET_TMP_RSA:
705 if ((rsa=RSAPrivateKey_dup(rsa)) == NULL)
710 SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_RSA_LIB);
715 if (cert->rsa_tmp != NULL)
716 RSA_free(cert->rsa_tmp);
722 case SSL_CTRL_SET_TMP_RSA_CB:
723 cert->rsa_tmp_cb=(RSA *(*)(SSL *, int, int))parg;
727 case SSL_CTRL_SET_TMP_DH:
733 if ( ((new=DHparams_dup(dh)) == NULL) ||
734 (!DH_generate_key(new)))
736 SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_DH_LIB);
737 if (new != NULL) DH_free(new);
741 if (cert->dh_tmp != NULL)
742 DH_free(cert->dh_tmp);
749 case SSL_CTRL_SET_TMP_DH_CB:
750 cert->dh_tmp_cb=(DH *(*)(SSL *, int, int))parg;
753 /* A Thawte special :-) */
754 case SSL_CTRL_EXTRA_CHAIN_CERT:
755 if (ctx->extra_certs == NULL)
757 if ((ctx->extra_certs=sk_X509_new_null()) == NULL)
760 sk_X509_push(ctx->extra_certs,(X509 *)parg);
769 /* This function needs to check if the ciphers required are actually
771 SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p)
774 static SSL_CIPHER *sorted[SSL3_NUM_CIPHERS];
775 SSL_CIPHER c,*cp= &c,**cpp;
781 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
783 for (i=0; i<SSL3_NUM_CIPHERS; i++)
784 sorted[i]= &(ssl3_ciphers[i]);
786 qsort( (char *)sorted,
787 SSL3_NUM_CIPHERS,sizeof(SSL_CIPHER *),
788 FP_ICC ssl_cipher_ptr_id_cmp);
790 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
795 id=0x03000000L|((unsigned long)p[0]<<8L)|(unsigned long)p[1];
797 cpp=(SSL_CIPHER **)OBJ_bsearch((char *)&cp,
799 SSL3_NUM_CIPHERS,sizeof(SSL_CIPHER *),
800 (int (*)())ssl_cipher_ptr_id_cmp);
801 if ((cpp == NULL) || !(*cpp)->valid)
807 int ssl3_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p)
814 if ((l & 0xff000000) != 0x03000000) return(0);
815 p[0]=((unsigned char)(l>> 8L))&0xFF;
816 p[1]=((unsigned char)(l ))&0xFF;
821 int ssl3_part_read(SSL *s, int i)
823 s->rwstate=SSL_READING;
836 SSL_CIPHER *ssl3_choose_cipher(SSL *s, STACK_OF(SSL_CIPHER) *have,
837 STACK_OF(SSL_CIPHER) *pref)
839 SSL_CIPHER *c,*ret=NULL;
842 unsigned long alg,mask,emask;
844 /* Lets see which ciphers we can supported */
848 cert=s->ctx->default_cert;
850 sk_SSL_CIPHER_set_cmp_func(pref,ssl_cipher_ptr_id_cmp);
854 for(i=0 ; i < sk_num(pref) ; ++i)
856 c=(SSL_CIPHER *)sk_value(pref,i);
857 printf("%p:%s\n",c,c->name);
861 for (i=0; i<sk_SSL_CIPHER_num(have); i++)
863 c=sk_SSL_CIPHER_value(have,i);
865 ssl_set_cert_masks(cert,s->ctx->default_cert,c);
867 emask=cert->export_mask;
869 alg=c->algorithms&(SSL_MKEY_MASK|SSL_AUTH_MASK);
870 if (SSL_IS_EXPORT(c->algorithms))
872 ok=((alg & emask) == alg)?1:0;
874 printf("%d:[%08lX:%08lX]%p:%s (export)\n",ok,alg,emask,
880 ok=((alg & mask) == alg)?1:0;
882 printf("%d:[%08lX:%08lX]%p:%s\n",ok,alg,mask,c,
889 j=sk_SSL_CIPHER_find(pref,c);
892 ret=sk_SSL_CIPHER_value(pref,j);
899 int ssl3_get_req_cert_type(SSL *s, unsigned char *p)
904 alg=s->s3->tmp.new_cipher->algorithms;
907 if (alg & (SSL_kDHr|SSL_kEDH))
910 p[ret++]=SSL3_CT_RSA_FIXED_DH;
913 p[ret++]=SSL3_CT_DSS_FIXED_DH;
916 if ((s->version == SSL3_VERSION) &&
917 (alg & (SSL_kEDH|SSL_kDHd|SSL_kDHr)))
920 p[ret++]=SSL3_CT_RSA_EPHEMERAL_DH;
923 p[ret++]=SSL3_CT_DSS_EPHEMERAL_DH;
928 p[ret++]=SSL3_CT_RSA_SIGN;
931 p[ret++]=SSL3_CT_DSS_SIGN;
936 int ssl3_shutdown(SSL *s)
939 /* Don't do anything much if we have not done the handshake or
940 * we don't want to send messages :-) */
941 if ((s->quiet_shutdown) || (s->state == SSL_ST_BEFORE))
943 s->shutdown=(SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
947 if (!(s->shutdown & SSL_SENT_SHUTDOWN))
949 s->shutdown|=SSL_SENT_SHUTDOWN;
951 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_CLOSE_NOTIFY);
953 /* our shutdown alert has been sent now, and if it still needs
954 * to be written, s->s3->alert_dispatch will be true */
956 else if (s->s3->alert_dispatch)
958 /* resend it if not sent */
960 ssl3_dispatch_alert(s);
963 else if (!(s->shutdown & SSL_RECEIVED_SHUTDOWN))
965 /* If we are waiting for a close from our peer, we are closed */
966 ssl3_read_bytes(s,0,NULL,0);
969 if ((s->shutdown == (SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN)) &&
970 !s->s3->alert_dispatch)
976 int ssl3_write(SSL *s, const void *buf, int len)
981 if (s->shutdown & SSL_SEND_SHUTDOWN)
983 s->rwstate=SSL_NOTHING;
988 if (s->s3->renegotiate) ssl3_renegotiate_check(s);
990 /* This is an experimental flag that sends the
991 * last handshake message in the same packet as the first
992 * use data - used to see if it helps the TCP protocol during
993 * session-id reuse */
994 /* The second test is because the buffer may have been removed */
995 if ((s->s3->flags & SSL3_FLAGS_POP_BUFFER) && (s->wbio == s->bbio))
997 /* First time through, we write into the buffer */
998 if (s->s3->delay_buf_pop_ret == 0)
1000 ret=ssl3_write_bytes(s,SSL3_RT_APPLICATION_DATA,
1002 if (ret <= 0) return(ret);
1004 s->s3->delay_buf_pop_ret=ret;
1007 s->rwstate=SSL_WRITING;
1008 n=BIO_flush(s->wbio);
1009 if (n <= 0) return(n);
1010 s->rwstate=SSL_NOTHING;
1012 /* We have flushed the buffer, so remove it */
1013 ssl_free_wbio_buffer(s);
1014 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
1016 ret=s->s3->delay_buf_pop_ret;
1017 s->s3->delay_buf_pop_ret=0;
1021 ret=ssl3_write_bytes(s,SSL3_RT_APPLICATION_DATA,
1023 if (ret <= 0) return(ret);
1029 int ssl3_read(SSL *s, void *buf, int len)
1034 if (s->s3->renegotiate) ssl3_renegotiate_check(s);
1035 s->s3->in_read_app_data=1;
1036 ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len);
1037 if ((ret == -1) && (s->s3->in_read_app_data == 0))
1039 ERR_get_error(); /* clear the error */
1040 s->s3->in_read_app_data=0;
1042 ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len);
1046 s->s3->in_read_app_data=0;
1051 int ssl3_peek(SSL *s, char *buf, int len)
1057 if ((rr->length == 0) || (rr->type != SSL3_RT_APPLICATION_DATA))
1059 n=ssl3_read(s,buf,1);
1060 if (n <= 0) return(n);
1065 if ((unsigned int)len > rr->length)
1069 memcpy(buf,&(rr->data[rr->off]),(unsigned int)n);
1073 int ssl3_renegotiate(SSL *s)
1075 if (s->handshake_func == NULL)
1078 if (s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS)
1081 s->s3->renegotiate=1;
1085 int ssl3_renegotiate_check(SSL *s)
1089 if (s->s3->renegotiate)
1091 if ( (s->s3->rbuf.left == 0) &&
1092 (s->s3->wbuf.left == 0) &&
1096 if we are the server, and we have sent a 'RENEGOTIATE' message, we
1097 need to go to SSL_ST_ACCEPT.
\1e
1100 s->state=SSL_ST_RENEGOTIATE;
1101 s->s3->renegotiate=0;
1102 s->s3->num_renegotiations++;
1103 s->s3->total_renegotiations++;