fix ssl3_pending
[openssl.git] / ssl / s3_lib.c
index 87525faab496aca9496499e4296f484f4b8e8838..4ccc70b061bc9a545dbfae6f0e0fdca672ecaa13 100644 (file)
  * copied and put under another distribution licence
  * [including the GNU Public Licence.]
  */
+/* ====================================================================
+ * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
 
 #include <stdio.h>
-#include <openssl/md5.h>
-#include <openssl/sha.h>
 #include <openssl/objects.h>
 #include "ssl_locl.h"
+#include "kssl_lcl.h"
+#include <openssl/md5.h>
 
 const char *ssl3_version_str="SSLv3" OPENSSL_VERSION_PTEXT;
 
@@ -117,7 +170,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[]={
        SSL3_TXT_ADH_RC4_128_MD5,
        SSL3_CK_ADH_RC4_128_MD5,
        SSL_kEDH |SSL_aNULL|SSL_RC4  |SSL_MD5 |SSL_SSLV3,
-       SSL_NOT_EXP,
+       SSL_NOT_EXP|SSL_MEDIUM,
        0,
        128,
        128,
@@ -143,7 +196,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[]={
        SSL3_TXT_ADH_DES_64_CBC_SHA,
        SSL3_CK_ADH_DES_64_CBC_SHA,
        SSL_kEDH |SSL_aNULL|SSL_DES  |SSL_SHA1|SSL_SSLV3,
-       SSL_NOT_EXP,
+       SSL_NOT_EXP|SSL_LOW,
        0,
        56,
        56,
@@ -156,7 +209,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[]={
        SSL3_TXT_ADH_DES_192_CBC_SHA,
        SSL3_CK_ADH_DES_192_CBC_SHA,
        SSL_kEDH |SSL_aNULL|SSL_3DES |SSL_SHA1|SSL_SSLV3,
-       SSL_NOT_EXP,
+       SSL_NOT_EXP|SSL_HIGH,
        0,
        168,
        168,
@@ -465,7 +518,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[]={
        SSL3_TXT_FZA_DMS_RC4_SHA,
        SSL3_CK_FZA_DMS_RC4_SHA,
        SSL_kFZA|SSL_aFZA |SSL_RC4  |SSL_SHA1|SSL_SSLV3,
-       SSL_NOT_EXP,
+       SSL_NOT_EXP|SSL_MEDIUM,
        0,
        128,
        128,
@@ -473,6 +526,97 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[]={
        SSL_ALL_STRENGTHS,
        },
 
+#ifndef OPENSSL_NO_KRB5
+/* The Kerberos ciphers
+** 20000107 VRS: And the first shall be last,
+** in hopes of avoiding the lynx ssl renegotiation problem.
+*/
+/* Cipher 21 VRS */
+       {
+       1,
+       SSL3_TXT_KRB5_DES_40_CBC_SHA,
+       SSL3_CK_KRB5_DES_40_CBC_SHA,
+       SSL_kKRB5|SSL_aKRB5|  SSL_DES|SSL_SHA1   |SSL_SSLV3,
+       SSL_EXPORT|SSL_EXP40,
+       0,
+       40,
+       56,
+       SSL_ALL_CIPHERS,
+       SSL_ALL_STRENGTHS,
+       },
+
+/* Cipher 22 VRS */
+       {
+       1,
+       SSL3_TXT_KRB5_DES_40_CBC_MD5,
+       SSL3_CK_KRB5_DES_40_CBC_MD5,
+       SSL_kKRB5|SSL_aKRB5|  SSL_DES|SSL_MD5    |SSL_SSLV3,
+       SSL_EXPORT|SSL_EXP40,
+       0,
+       40,
+       56,
+       SSL_ALL_CIPHERS,
+       SSL_ALL_STRENGTHS,
+       },
+
+/* Cipher 23 VRS */
+       {
+       1,
+       SSL3_TXT_KRB5_DES_64_CBC_SHA,
+       SSL3_CK_KRB5_DES_64_CBC_SHA,
+       SSL_kKRB5|SSL_aKRB5|  SSL_DES|SSL_SHA1   |SSL_SSLV3,
+       SSL_NOT_EXP|SSL_LOW,
+       0,
+       56,
+       56,
+       SSL_ALL_CIPHERS,
+       SSL_ALL_STRENGTHS,
+       },
+
+/* Cipher 24 VRS */
+       {
+       1,
+       SSL3_TXT_KRB5_DES_64_CBC_MD5,
+       SSL3_CK_KRB5_DES_64_CBC_MD5,
+       SSL_kKRB5|SSL_aKRB5|  SSL_DES|SSL_MD5    |SSL_SSLV3,
+       SSL_NOT_EXP|SSL_LOW,
+       0,
+       56,
+       56,
+       SSL_ALL_CIPHERS,
+       SSL_ALL_STRENGTHS,
+       },
+
+/* Cipher 25 VRS */
+       {
+       1,
+       SSL3_TXT_KRB5_DES_192_CBC3_SHA,
+       SSL3_CK_KRB5_DES_192_CBC3_SHA,
+       SSL_kKRB5|SSL_aKRB5|  SSL_3DES|SSL_SHA1  |SSL_SSLV3,
+       SSL_NOT_EXP|SSL_HIGH,
+       0,
+       112,
+       168,
+       SSL_ALL_CIPHERS,
+       SSL_ALL_STRENGTHS,
+       },
+
+/* Cipher 26 VRS */
+       {
+       1,
+       SSL3_TXT_KRB5_DES_192_CBC3_MD5,
+       SSL3_CK_KRB5_DES_192_CBC3_MD5,
+       SSL_kKRB5|SSL_aKRB5|  SSL_3DES|SSL_MD5   |SSL_SSLV3,
+       SSL_NOT_EXP|SSL_HIGH,
+       0,
+       112,
+       168,
+       SSL_ALL_CIPHERS,
+       SSL_ALL_STRENGTHS,
+       },
+#endif /* OPENSSL_NO_KRB5 */
+
+
 #if TLS1_ALLOW_EXPERIMENTAL_CIPHERSUITES
        /* New TLS Export CipherSuites */
        /* Cipher 60 */
@@ -559,7 +703,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[]={
            TLS1_TXT_DHE_DSS_WITH_RC4_128_SHA,
            TLS1_CK_DHE_DSS_WITH_RC4_128_SHA,
            SSL_kEDH|SSL_aDSS|SSL_RC4|SSL_SHA|SSL_TLSV1,
-           SSL_NOT_EXP,
+           SSL_NOT_EXP|SSL_MEDIUM,
            0,
            128,
            128,
@@ -567,6 +711,165 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[]={
            SSL_ALL_STRENGTHS
            },
 #endif
+       /* New AES ciphersuites */
+
+       /* Cipher 2F */
+           {
+           1,
+           TLS1_TXT_RSA_WITH_AES_128_SHA,
+           TLS1_CK_RSA_WITH_AES_128_SHA,
+           SSL_kRSA|SSL_aRSA|SSL_AES|SSL_SHA |SSL_TLSV1,
+           SSL_NOT_EXP|SSL_MEDIUM,
+           0,
+           128,
+           128,
+           SSL_ALL_CIPHERS,
+           SSL_ALL_STRENGTHS,
+           },
+       /* Cipher 30 */
+           {
+           0,
+           TLS1_TXT_DH_DSS_WITH_AES_128_SHA,
+           TLS1_CK_DH_DSS_WITH_AES_128_SHA,
+           SSL_kDHd|SSL_aDH|SSL_AES|SSL_SHA|SSL_TLSV1,
+           SSL_NOT_EXP|SSL_MEDIUM,
+           0,
+           128,
+           128,
+           SSL_ALL_CIPHERS,
+           SSL_ALL_STRENGTHS,
+           },
+       /* Cipher 31 */
+           {
+           0,
+           TLS1_TXT_DH_RSA_WITH_AES_128_SHA,
+           TLS1_CK_DH_RSA_WITH_AES_128_SHA,
+           SSL_kDHr|SSL_aDH|SSL_AES|SSL_SHA|SSL_TLSV1,
+           SSL_NOT_EXP|SSL_MEDIUM,
+           0,
+           128,
+           128,
+           SSL_ALL_CIPHERS,
+           SSL_ALL_STRENGTHS,
+           },
+       /* Cipher 32 */
+           {
+           1,
+           TLS1_TXT_DHE_DSS_WITH_AES_128_SHA,
+           TLS1_CK_DHE_DSS_WITH_AES_128_SHA,
+           SSL_kEDH|SSL_aDSS|SSL_AES|SSL_SHA|SSL_TLSV1,
+           SSL_NOT_EXP|SSL_MEDIUM,
+           0,
+           128,
+           128,
+           SSL_ALL_CIPHERS,
+           SSL_ALL_STRENGTHS,
+           },
+       /* Cipher 33 */
+           {
+           1,
+           TLS1_TXT_DHE_RSA_WITH_AES_128_SHA,
+           TLS1_CK_DHE_RSA_WITH_AES_128_SHA,
+           SSL_kEDH|SSL_aRSA|SSL_AES|SSL_SHA|SSL_TLSV1,
+           SSL_NOT_EXP|SSL_MEDIUM,
+           0,
+           128,
+           128,
+           SSL_ALL_CIPHERS,
+           SSL_ALL_STRENGTHS,
+           },
+       /* Cipher 34 */
+           {
+           1,
+           TLS1_TXT_ADH_WITH_AES_128_SHA,
+           TLS1_CK_ADH_WITH_AES_128_SHA,
+           SSL_kEDH|SSL_aNULL|SSL_AES|SSL_SHA|SSL_TLSV1,
+           SSL_NOT_EXP|SSL_MEDIUM,
+           0,
+           128,
+           128,
+           SSL_ALL_CIPHERS,
+           SSL_ALL_STRENGTHS,
+           },
+
+       /* Cipher 35 */
+           {
+           1,
+           TLS1_TXT_RSA_WITH_AES_256_SHA,
+           TLS1_CK_RSA_WITH_AES_256_SHA,
+           SSL_kRSA|SSL_aRSA|SSL_AES|SSL_SHA |SSL_TLSV1,
+           SSL_NOT_EXP|SSL_HIGH,
+           0,
+           256,
+           256,
+           SSL_ALL_CIPHERS,
+           SSL_ALL_STRENGTHS,
+           },
+       /* Cipher 36 */
+           {
+           0,
+           TLS1_TXT_DH_DSS_WITH_AES_256_SHA,
+           TLS1_CK_DH_DSS_WITH_AES_256_SHA,
+           SSL_kDHd|SSL_aDH|SSL_AES|SSL_SHA|SSL_TLSV1,
+           SSL_NOT_EXP|SSL_HIGH,
+           0,
+           256,
+           256,
+           SSL_ALL_CIPHERS,
+           SSL_ALL_STRENGTHS,
+           },
+       /* Cipher 37 */
+           {
+           0,
+           TLS1_TXT_DH_RSA_WITH_AES_256_SHA,
+           TLS1_CK_DH_RSA_WITH_AES_256_SHA,
+           SSL_kDHr|SSL_aDH|SSL_AES|SSL_SHA|SSL_TLSV1,
+           SSL_NOT_EXP|SSL_HIGH,
+           0,
+           256,
+           256,
+           SSL_ALL_CIPHERS,
+           SSL_ALL_STRENGTHS,
+           },
+       /* Cipher 38 */
+           {
+           1,
+           TLS1_TXT_DHE_DSS_WITH_AES_256_SHA,
+           TLS1_CK_DHE_DSS_WITH_AES_256_SHA,
+           SSL_kEDH|SSL_aDSS|SSL_AES|SSL_SHA|SSL_TLSV1,
+           SSL_NOT_EXP|SSL_HIGH,
+           0,
+           256,
+           256,
+           SSL_ALL_CIPHERS,
+           SSL_ALL_STRENGTHS,
+           },
+       /* Cipher 39 */
+           {
+           1,
+           TLS1_TXT_DHE_RSA_WITH_AES_256_SHA,
+           TLS1_CK_DHE_RSA_WITH_AES_256_SHA,
+           SSL_kEDH|SSL_aRSA|SSL_AES|SSL_SHA|SSL_TLSV1,
+           SSL_NOT_EXP|SSL_HIGH,
+           0,
+           256,
+           256,
+           SSL_ALL_CIPHERS,
+           SSL_ALL_STRENGTHS,
+           },
+       /* Cipher 3A */
+           {
+           1,
+           TLS1_TXT_ADH_WITH_AES_256_SHA,
+           TLS1_CK_ADH_WITH_AES_256_SHA,
+           SSL_kEDH|SSL_aNULL|SSL_AES|SSL_SHA|SSL_TLSV1,
+           SSL_NOT_EXP|SSL_HIGH,
+           0,
+           256,
+           256,
+           SSL_ALL_CIPHERS,
+           SSL_ALL_STRENGTHS,
+           },
 
 /* end of list */
        };
@@ -638,18 +941,22 @@ SSL_CIPHER *ssl3_get_cipher(unsigned int u)
                return(NULL);
        }
 
-/* The problem is that it may not be the correct record type */
 int ssl3_pending(SSL *s)
        {
-       return(s->s3->rrec.length);
+       if (s->rstate == SSL_ST_READ_BODY)
+               return 0;
+       
+       return (s->s3->rrec.type == SSL3_RT_APPLICATION_DATA) ? s->s3->rrec.length : 0;
        }
 
 int ssl3_new(SSL *s)
        {
        SSL3_STATE *s3;
 
-       if ((s3=Malloc(sizeof *s3)) == NULL) goto err;
+       if ((s3=OPENSSL_malloc(sizeof *s3)) == NULL) goto err;
        memset(s3,0,sizeof *s3);
+       EVP_MD_CTX_init(&s3->finish_dgst1);
+       EVP_MD_CTX_init(&s3->finish_dgst2);
 
        s->s3=s3;
 
@@ -666,19 +973,21 @@ void ssl3_free(SSL *s)
 
        ssl3_cleanup_key_block(s);
        if (s->s3->rbuf.buf != NULL)
-               Free(s->s3->rbuf.buf);
+               OPENSSL_free(s->s3->rbuf.buf);
        if (s->s3->wbuf.buf != NULL)
-               Free(s->s3->wbuf.buf);
+               OPENSSL_free(s->s3->wbuf.buf);
        if (s->s3->rrec.comp != NULL)
-               Free(s->s3->rrec.comp);
-#ifndef NO_DH
+               OPENSSL_free(s->s3->rrec.comp);
+#ifndef OPENSSL_NO_DH
        if (s->s3->tmp.dh != NULL)
                DH_free(s->s3->tmp.dh);
 #endif
        if (s->s3->tmp.ca_names != NULL)
                sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
+       EVP_MD_CTX_cleanup(&s->s3->finish_dgst1);
+       EVP_MD_CTX_cleanup(&s->s3->finish_dgst2);
        memset(s->s3,0,sizeof *s->s3);
-       Free(s->s3);
+       OPENSSL_free(s->s3);
        s->s3=NULL;
        }
 
@@ -692,13 +1001,20 @@ void ssl3_clear(SSL *s)
 
        if (s->s3->rrec.comp != NULL)
                {
-               Free(s->s3->rrec.comp);
+               OPENSSL_free(s->s3->rrec.comp);
                s->s3->rrec.comp=NULL;
                }
+#ifndef OPENSSL_NO_DH
+       if (s->s3->tmp.dh != NULL)
+               DH_free(s->s3->tmp.dh);
+#endif
 
        rp=s->s3->rbuf.buf;
        wp=s->s3->wbuf.buf;
 
+       EVP_MD_CTX_cleanup(&s->s3->finish_dgst1);
+       EVP_MD_CTX_cleanup(&s->s3->finish_dgst2);
+
        memset(s->s3,0,sizeof *s->s3);
        if (rp != NULL) s->s3->rbuf.buf=rp;
        if (wp != NULL) s->s3->wbuf.buf=wp;
@@ -713,17 +1029,17 @@ void ssl3_clear(SSL *s)
        s->version=SSL3_VERSION;
        }
 
-long ssl3_ctrl(SSL *s, int cmd, long larg, char *parg)
+long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg)
        {
        int ret=0;
 
-#if !defined(NO_DSA) || !defined(NO_RSA)
+#if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_RSA)
        if (
-#ifndef NO_RSA
+#ifndef OPENSSL_NO_RSA
            cmd == SSL_CTRL_SET_TMP_RSA ||
            cmd == SSL_CTRL_SET_TMP_RSA_CB ||
 #endif
-#ifndef NO_DSA
+#ifndef OPENSSL_NO_DSA
            cmd == SSL_CTRL_SET_TMP_DH ||
            cmd == SSL_CTRL_SET_TMP_DH_CB ||
 #endif
@@ -757,7 +1073,7 @@ long ssl3_ctrl(SSL *s, int cmd, long larg, char *parg)
        case SSL_CTRL_GET_FLAGS:
                ret=(int)(s->s3->flags);
                break;
-#ifndef NO_RSA
+#ifndef OPENSSL_NO_RSA
        case SSL_CTRL_NEED_TMP_RSA:
                if ((s->cert != NULL) && (s->cert->rsa_tmp == NULL) &&
                    ((s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL) ||
@@ -767,14 +1083,16 @@ long ssl3_ctrl(SSL *s, int cmd, long larg, char *parg)
        case SSL_CTRL_SET_TMP_RSA:
                {
                        RSA *rsa = (RSA *)parg;
-                       if (rsa == NULL) {
+                       if (rsa == NULL)
+                               {
                                SSLerr(SSL_F_SSL3_CTRL, ERR_R_PASSED_NULL_PARAMETER);
                                return(ret);
-                       }
-                       if ((rsa = RSAPrivateKey_dup(rsa)) == NULL) {
+                               }
+                       if ((rsa = RSAPrivateKey_dup(rsa)) == NULL)
+                               {
                                SSLerr(SSL_F_SSL3_CTRL, ERR_R_RSA_LIB);
                                return(ret);
-                       }
+                               }
                        if (s->cert->rsa_tmp != NULL)
                                RSA_free(s->cert->rsa_tmp);
                        s->cert->rsa_tmp = rsa;
@@ -788,23 +1106,29 @@ long ssl3_ctrl(SSL *s, int cmd, long larg, char *parg)
                }
                break;
 #endif
-#ifndef NO_DH
+#ifndef OPENSSL_NO_DH
        case SSL_CTRL_SET_TMP_DH:
                {
                        DH *dh = (DH *)parg;
-                       if (dh == NULL) {
+                       if (dh == NULL)
+                               {
                                SSLerr(SSL_F_SSL3_CTRL, ERR_R_PASSED_NULL_PARAMETER);
                                return(ret);
-                       }
-                       if ((dh = DHparams_dup(dh)) == NULL) {
-                               SSLerr(SSL_F_SSL3_CTRL, ERR_R_DH_LIB);
-                               return(ret);
-                       }
-                       if (!DH_generate_key(dh)) {
-                               DH_free(dh);
+                               }
+                       if ((dh = DHparams_dup(dh)) == NULL)
+                               {
                                SSLerr(SSL_F_SSL3_CTRL, ERR_R_DH_LIB);
                                return(ret);
-                       }
+                               }
+                       if (!(s->options & SSL_OP_SINGLE_DH_USE))
+                               {
+                               if (!DH_generate_key(dh))
+                                       {
+                                       DH_free(dh);
+                                       SSLerr(SSL_F_SSL3_CTRL, ERR_R_DH_LIB);
+                                       return(ret);
+                                       }
+                               }
                        if (s->cert->dh_tmp != NULL)
                                DH_free(s->cert->dh_tmp);
                        s->cert->dh_tmp = dh;
@@ -828,19 +1152,19 @@ long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp)())
        {
        int ret=0;
 
-#if !defined(NO_DSA) || !defined(NO_RSA)
+#if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_RSA)
        if (
-#ifndef NO_RSA
+#ifndef OPENSSL_NO_RSA
            cmd == SSL_CTRL_SET_TMP_RSA_CB ||
 #endif
-#ifndef NO_DSA
+#ifndef OPENSSL_NO_DSA
            cmd == SSL_CTRL_SET_TMP_DH_CB ||
 #endif
                0)
                {
                if (!ssl_cert_inst(&s->cert))
-                       {
-                       SSLerr(SSL_F_SSL3_CTRL, ERR_R_MALLOC_FAILURE);
+                       {
+                       SSLerr(SSL_F_SSL3_CALLBACK_CTRL, ERR_R_MALLOC_FAILURE);
                        return(0);
                        }
                }
@@ -848,14 +1172,14 @@ long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp)())
 
        switch (cmd)
                {
-#ifndef NO_RSA
+#ifndef OPENSSL_NO_RSA
        case SSL_CTRL_SET_TMP_RSA_CB:
                {
                s->cert->rsa_tmp_cb = (RSA *(*)(SSL *, int, int))fp;
                }
                break;
 #endif
-#ifndef NO_DH
+#ifndef OPENSSL_NO_DH
        case SSL_CTRL_SET_TMP_DH_CB:
                {
                s->cert->dh_tmp_cb = (DH *(*)(SSL *, int, int))fp;
@@ -868,7 +1192,7 @@ long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp)())
        return(ret);
        }
 
-long ssl3_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, char *parg)
+long ssl3_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
        {
        CERT *cert;
 
@@ -876,7 +1200,7 @@ long ssl3_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, char *parg)
 
        switch (cmd)
                {
-#ifndef NO_RSA
+#ifndef OPENSSL_NO_RSA
        case SSL_CTRL_NEED_TMP_RSA:
                if (    (cert->rsa_tmp == NULL) &&
                        ((cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL) ||
@@ -921,27 +1245,30 @@ long ssl3_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, char *parg)
                }
                break;
 #endif
-#ifndef NO_DH
+#ifndef OPENSSL_NO_DH
        case SSL_CTRL_SET_TMP_DH:
                {
                DH *new=NULL,*dh;
-               int rret=0;
 
                dh=(DH *)parg;
-               if (    ((new=DHparams_dup(dh)) == NULL) ||
-                       (!DH_generate_key(new)))
+               if ((new=DHparams_dup(dh)) == NULL)
                        {
                        SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_DH_LIB);
-                       if (new != NULL) DH_free(new);
+                       return 0;
                        }
-               else
+               if (!(ctx->options & SSL_OP_SINGLE_DH_USE))
                        {
-                       if (cert->dh_tmp != NULL)
-                               DH_free(cert->dh_tmp);
-                       cert->dh_tmp=new;
-                       rret=1;
+                       if (!DH_generate_key(new))
+                               {
+                               SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_DH_LIB);
+                               DH_free(new);
+                               return 0;
+                               }
                        }
-               return(rret);
+               if (cert->dh_tmp != NULL)
+                       DH_free(cert->dh_tmp);
+               cert->dh_tmp=new;
+               return 1;
                }
                /*break; */
        case SSL_CTRL_SET_TMP_DH_CB:
@@ -975,14 +1302,14 @@ long ssl3_ctx_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)())
 
        switch (cmd)
                {
-#ifndef NO_RSA
+#ifndef OPENSSL_NO_RSA
        case SSL_CTRL_SET_TMP_RSA_CB:
                {
                cert->rsa_tmp_cb = (RSA *(*)(SSL *, int, int))fp;
                }
                break;
 #endif
-#ifndef NO_DH
+#ifndef OPENSSL_NO_DH
        case SSL_CTRL_SET_TMP_DH_CB:
                {
                cert->dh_tmp_cb = (DH *(*)(SSL *, int, int))fp;
@@ -1026,7 +1353,7 @@ SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p)
        cpp=(SSL_CIPHER **)OBJ_bsearch((char *)&cp,
                (char *)sorted,
                SSL3_NUM_CIPHERS,sizeof(SSL_CIPHER *),
-               (int (*)())ssl_cipher_ptr_id_cmp);
+               FP_ICC ssl_cipher_ptr_id_cmp);
        if ((cpp == NULL) || !(*cpp)->valid)
                return(NULL);
        else
@@ -1047,10 +1374,11 @@ int ssl3_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p)
        return(2);
        }
 
-SSL_CIPHER *ssl3_choose_cipher(SSL *s, STACK_OF(SSL_CIPHER) *have,
-            STACK_OF(SSL_CIPHER) *pref)
+SSL_CIPHER *ssl3_choose_cipher(SSL *s, STACK_OF(SSL_CIPHER) *clnt,
+            STACK_OF(SSL_CIPHER) *srvr)
        {
        SSL_CIPHER *c,*ret=NULL;
+       STACK_OF(SSL_CIPHER) *prio, *allow;
        int i,j,ok;
        CERT *cert;
        unsigned long alg,mask,emask;
@@ -1058,26 +1386,62 @@ SSL_CIPHER *ssl3_choose_cipher(SSL *s, STACK_OF(SSL_CIPHER) *have,
        /* Let's see which ciphers we can support */
        cert=s->cert;
 
-       sk_SSL_CIPHER_set_cmp_func(pref,ssl_cipher_ptr_id_cmp);
+#if 0
+       /* Do not set the compare functions, because this may lead to a
+        * reordering by "id". We want to keep the original ordering.
+        * We may pay a price in performance during sk_SSL_CIPHER_find(),
+        * but would have to pay with the price of sk_SSL_CIPHER_dup().
+        */
+       sk_SSL_CIPHER_set_cmp_func(srvr, ssl_cipher_ptr_id_cmp);
+       sk_SSL_CIPHER_set_cmp_func(clnt, ssl_cipher_ptr_id_cmp);
+#endif
 
 #ifdef CIPHER_DEBUG
-       printf("Have:\n");
-       for(i=0 ; i < sk_num(pref) ; ++i)
+        printf("Server has %d from %p:\n", sk_SSL_CIPHER_num(srvr), srvr);
+        for(i=0 ; i < sk_SSL_CIPHER_num(srvr) ; ++i)
            {
-           c=(SSL_CIPHER *)sk_value(pref,i);
+           c=sk_SSL_CIPHER_value(srvr,i);
+           printf("%p:%s\n",c,c->name);
+           }
+        printf("Client sent %d from %p:\n", sk_SSL_CIPHER_num(clnt), clnt);
+        for(i=0 ; i < sk_SSL_CIPHER_num(clnt) ; ++i)
+           {
+           c=sk_SSL_CIPHER_value(clnt,i);
            printf("%p:%s\n",c,c->name);
            }
 #endif
 
-       for (i=0; i<sk_SSL_CIPHER_num(have); i++)
+       if (s->options & SSL_OP_CIPHER_SERVER_PREFERENCE)
+           {
+           prio = srvr;
+           allow = clnt;
+           }
+       else
+           {
+           prio = clnt;
+           allow = srvr;
+           }
+
+       for (i=0; i<sk_SSL_CIPHER_num(prio); i++)
                {
-               c=sk_SSL_CIPHER_value(have,i);
+               c=sk_SSL_CIPHER_value(prio,i);
 
                ssl_set_cert_masks(cert,c);
                mask=cert->mask;
                emask=cert->export_mask;
                        
+#ifdef KSSL_DEBUG
+               printf("ssl3_choose_cipher %d alg= %lx\n", i,c->algorithms);
+#endif    /* KSSL_DEBUG */
+
                alg=c->algorithms&(SSL_MKEY_MASK|SSL_AUTH_MASK);
+#ifndef OPENSSL_NO_KRB5
+                if (alg & SSL_KRB5) 
+                        {
+                        if ( !kssl_keytab_is_available(s->kssl_ctx) )
+                            continue;
+                        }
+#endif /* OPENSSL_NO_KRB5 */
                if (SSL_C_IS_EXPORT(c))
                        {
                        ok=((alg & emask) == alg)?1:0;
@@ -1097,10 +1461,10 @@ SSL_CIPHER *ssl3_choose_cipher(SSL *s, STACK_OF(SSL_CIPHER) *have,
 
                if (!ok) continue;
        
-               j=sk_SSL_CIPHER_find(pref,c);
+               j=sk_SSL_CIPHER_find(allow,c);
                if (j >= 0)
                        {
-                       ret=sk_SSL_CIPHER_value(pref,j);
+                       ret=sk_SSL_CIPHER_value(allow,j);
                        break;
                        }
                }
@@ -1114,31 +1478,31 @@ int ssl3_get_req_cert_type(SSL *s, unsigned char *p)
 
        alg=s->s3->tmp.new_cipher->algorithms;
 
-#ifndef NO_DH
+#ifndef OPENSSL_NO_DH
        if (alg & (SSL_kDHr|SSL_kEDH))
                {
-#  ifndef NO_RSA
+#  ifndef OPENSSL_NO_RSA
                p[ret++]=SSL3_CT_RSA_FIXED_DH;
 #  endif
-#  ifndef NO_DSA
+#  ifndef OPENSSL_NO_DSA
                p[ret++]=SSL3_CT_DSS_FIXED_DH;
 #  endif
                }
        if ((s->version == SSL3_VERSION) &&
                (alg & (SSL_kEDH|SSL_kDHd|SSL_kDHr)))
                {
-#  ifndef NO_RSA
+#  ifndef OPENSSL_NO_RSA
                p[ret++]=SSL3_CT_RSA_EPHEMERAL_DH;
 #  endif
-#  ifndef NO_DSA
+#  ifndef OPENSSL_NO_DSA
                p[ret++]=SSL3_CT_DSS_EPHEMERAL_DH;
 #  endif
                }
-#endif /* !NO_DH */
-#ifndef NO_RSA
+#endif /* !OPENSSL_NO_DH */
+#ifndef OPENSSL_NO_RSA
        p[ret++]=SSL3_CT_RSA_SIGN;
 #endif
-#ifndef NO_DSA
+#ifndef OPENSSL_NO_DSA
        p[ret++]=SSL3_CT_DSS_SIGN;
 #endif
        return(ret);
@@ -1174,7 +1538,7 @@ int ssl3_shutdown(SSL *s)
        else if (!(s->shutdown & SSL_RECEIVED_SHUTDOWN))
                {
                /* If we are waiting for a close from our peer, we are closed */
-               ssl3_read_bytes(s,0,NULL,0);
+               ssl3_read_bytes(s,0,NULL,0,0);
                }
 
        if ((s->shutdown == (SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN)) &&
@@ -1237,14 +1601,14 @@ int ssl3_write(SSL *s, const void *buf, int len)
        return(ret);
        }
 
-int ssl3_read(SSL *s, void *buf, int len)
+static int ssl3_read_internal(SSL *s, void *buf, int len, int peek)
        {
        int ret;
        
        clear_sys_error();
        if (s->s3->renegotiate) ssl3_renegotiate_check(s);
        s->s3->in_read_app_data=1;
-       ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len);
+       ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len,peek);
        if ((ret == -1) && (s->s3->in_read_app_data == 0))
                {
                /* ssl3_read_bytes decided to call s->handshake_func, which
@@ -1254,7 +1618,7 @@ int ssl3_read(SSL *s, void *buf, int len)
                 * by resetting 'in_read_app_data', strangely); so disable
                 * handshake processing and try to read application data again. */
                s->in_handshake++;
-               ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len);
+               ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len,peek);
                s->in_handshake--;
                }
        else
@@ -1263,26 +1627,14 @@ int ssl3_read(SSL *s, void *buf, int len)
        return(ret);
        }
 
-int ssl3_peek(SSL *s, char *buf, int len)
+int ssl3_read(SSL *s, void *buf, int len)
        {
-       SSL3_RECORD *rr;
-       int n;
-
-       rr= &(s->s3->rrec);
-       if ((rr->length == 0) || (rr->type != SSL3_RT_APPLICATION_DATA))
-               {
-               n=ssl3_read(s,buf,1);
-               if (n <= 0) return(n);
-               rr->length++;
-               rr->off--;
-               }
+       return ssl3_read_internal(s, buf, len, 0);
+       }
 
-       if ((unsigned int)len > rr->length)
-               n=rr->length;
-       else
-               n=len;
-       memcpy(buf,&(rr->data[rr->off]),(unsigned int)n);
-       return(n);
+int ssl3_peek(SSL *s, void *buf, int len)
+       {
+       return ssl3_read_internal(s, buf, len, 1);
        }
 
 int ssl3_renegotiate(SSL *s)