-Wall implies -Wuninitialized.
[openssl.git] / ssl / s3_lib.c
index b7bac8e10f083c934b3cd6046ffd61f6873bc4dd..4e58bcd632814a9cfcc7ee01f4775de2da6f64b8 100644 (file)
@@ -1,5 +1,5 @@
 /* ssl/s3_lib.c */
-/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
  * This package is an SSL implementation written
@@ -60,7 +60,7 @@
 #include "objects.h"
 #include "ssl_locl.h"
 
-char *ssl3_version_str="SSLv3 part of SSLeay 0.8.1b 29-Jun-1998";
+const char *ssl3_version_str="SSLv3" OPENSSL_VERSION_PTEXT;
 
 #define SSL3_NUM_CIPHERS       (sizeof(ssl3_ciphers)/sizeof(SSL_CIPHER))
 
@@ -97,7 +97,7 @@ SSL_CIPHER ssl3_ciphers[]={
        1,
        SSL3_TXT_ADH_RC4_40_MD5,
        SSL3_CK_ADH_RC4_40_MD5,
-       SSL_kEDH |SSL_aNULL|SSL_RC4  |SSL_MD5 |SSL_EXP|SSL_SSLV3,
+       SSL_kEDH |SSL_aNULL|SSL_RC4  |SSL_MD5 |SSL_EXP40|SSL_SSLV3,
        0,
        SSL_ALL_CIPHERS,
        },
@@ -115,7 +115,7 @@ SSL_CIPHER ssl3_ciphers[]={
        1,
        SSL3_TXT_ADH_DES_40_CBC_SHA,
        SSL3_CK_ADH_DES_40_CBC_SHA,
-       SSL_kEDH |SSL_aNULL|SSL_DES|SSL_SHA1|SSL_EXP|SSL_SSLV3,
+       SSL_kEDH |SSL_aNULL|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
        0,
        SSL_ALL_CIPHERS,
        },
@@ -131,8 +131,8 @@ SSL_CIPHER ssl3_ciphers[]={
 /* Cipher 1B */
        {
        1,
-       SSL3_TXT_ADH_DES_196_CBC_SHA,
-       SSL3_CK_ADH_DES_196_CBC_SHA,
+       SSL3_TXT_ADH_DES_192_CBC_SHA,
+       SSL3_CK_ADH_DES_192_CBC_SHA,
        SSL_kEDH |SSL_aNULL|SSL_3DES |SSL_SHA1|SSL_NOT_EXP|SSL_SSLV3,
        0,
        SSL_ALL_CIPHERS,
@@ -144,7 +144,7 @@ SSL_CIPHER ssl3_ciphers[]={
        1,
        SSL3_TXT_RSA_RC4_40_MD5,
        SSL3_CK_RSA_RC4_40_MD5,
-       SSL_kRSA|SSL_aRSA|SSL_RC4  |SSL_MD5 |SSL_EXP|SSL_SSLV3,
+       SSL_kRSA|SSL_aRSA|SSL_RC4  |SSL_MD5 |SSL_EXP40|SSL_SSLV3,
        0,
        SSL_ALL_CIPHERS,
        },
@@ -171,7 +171,7 @@ SSL_CIPHER ssl3_ciphers[]={
        1,
        SSL3_TXT_RSA_RC2_40_MD5,
        SSL3_CK_RSA_RC2_40_MD5,
-       SSL_kRSA|SSL_aRSA|SSL_RC2  |SSL_MD5 |SSL_EXP|SSL_SSLV3,
+       SSL_kRSA|SSL_aRSA|SSL_RC2  |SSL_MD5 |SSL_EXP40|SSL_SSLV3,
        0,
        SSL_ALL_CIPHERS,
        },
@@ -189,7 +189,7 @@ SSL_CIPHER ssl3_ciphers[]={
        1,
        SSL3_TXT_RSA_DES_40_CBC_SHA,
        SSL3_CK_RSA_DES_40_CBC_SHA,
-       SSL_kRSA|SSL_aRSA|SSL_DES|SSL_SHA1|SSL_EXP|SSL_SSLV3,
+       SSL_kRSA|SSL_aRSA|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
        0,
        SSL_ALL_CIPHERS,
        },
@@ -218,7 +218,7 @@ SSL_CIPHER ssl3_ciphers[]={
        0,
        SSL3_TXT_DH_DSS_DES_40_CBC_SHA,
        SSL3_CK_DH_DSS_DES_40_CBC_SHA,
-       SSL_kDHd |SSL_aDH|SSL_DES|SSL_SHA1|SSL_EXP|SSL_SSLV3,
+       SSL_kDHd |SSL_aDH|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
        0,
        SSL_ALL_CIPHERS,
        },
@@ -245,7 +245,7 @@ SSL_CIPHER ssl3_ciphers[]={
        0,
        SSL3_TXT_DH_RSA_DES_40_CBC_SHA,
        SSL3_CK_DH_RSA_DES_40_CBC_SHA,
-       SSL_kDHr |SSL_aDH|SSL_DES|SSL_SHA1|SSL_EXP|SSL_SSLV3,
+       SSL_kDHr |SSL_aDH|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
        0,
        SSL_ALL_CIPHERS,
        },
@@ -274,7 +274,7 @@ SSL_CIPHER ssl3_ciphers[]={
        1,
        SSL3_TXT_EDH_DSS_DES_40_CBC_SHA,
        SSL3_CK_EDH_DSS_DES_40_CBC_SHA,
-       SSL_kEDH|SSL_aDSS|SSL_DES|SSL_SHA1|SSL_EXP|SSL_SSLV3,
+       SSL_kEDH|SSL_aDSS|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
        0,
        SSL_ALL_CIPHERS,
        },
@@ -301,7 +301,7 @@ SSL_CIPHER ssl3_ciphers[]={
        1,
        SSL3_TXT_EDH_RSA_DES_40_CBC_SHA,
        SSL3_CK_EDH_RSA_DES_40_CBC_SHA,
-       SSL_kEDH|SSL_aRSA|SSL_DES|SSL_SHA1|SSL_EXP|SSL_SSLV3,
+       SSL_kEDH|SSL_aRSA|SSL_DES|SSL_SHA1|SSL_EXP40|SSL_SSLV3,
        0,
        SSL_ALL_CIPHERS,
        },
@@ -355,11 +355,92 @@ SSL_CIPHER ssl3_ciphers[]={
        SSL_ALL_CIPHERS,
        },
 
+#if TLS1_ALLOW_EXPERIMENTAL_CIPHERSUITES
+       /* New TLS Export CipherSuites */
+       /* Cipher 60 */
+           {
+           1,
+           TLS1_TXT_RSA_EXPORT1024_WITH_RC4_56_MD5,
+           TLS1_CK_RSA_EXPORT1024_WITH_RC4_56_MD5,
+           SSL_kRSA|SSL_aRSA|SSL_RC4|SSL_MD5|SSL_EXP56|SSL_TLSV1,
+           0,
+           SSL_ALL_CIPHERS
+           },
+       /* Cipher 61 */
+           {
+           1,
+           TLS1_TXT_RSA_EXPORT1024_WITH_RC2_CBC_56_MD5,
+           TLS1_CK_RSA_EXPORT1024_WITH_RC2_CBC_56_MD5,
+           SSL_kRSA|SSL_aRSA|SSL_RC2|SSL_MD5|SSL_EXP56|SSL_TLSV1,
+           0,
+           SSL_ALL_CIPHERS
+           },
+       /* Cipher 62 */
+           {
+           1,
+           TLS1_TXT_RSA_EXPORT1024_WITH_DES_CBC_SHA,
+           TLS1_CK_RSA_EXPORT1024_WITH_DES_CBC_SHA,
+           SSL_kRSA|SSL_aRSA|SSL_DES|SSL_SHA|SSL_EXP56|SSL_TLSV1,
+           0,
+           SSL_ALL_CIPHERS
+           },
+       /* Cipher 63 */
+           {
+           1,
+           TLS1_TXT_DHE_DSS_EXPORT1024_WITH_DES_CBC_SHA,
+           TLS1_CK_DHE_DSS_EXPORT1024_WITH_DES_CBC_SHA,
+           SSL_kEDH|SSL_aDSS|SSL_DES|SSL_SHA|SSL_EXP56|SSL_TLSV1,
+           0,
+           SSL_ALL_CIPHERS
+           },
+       /* Cipher 64 */
+           {
+           1,
+           TLS1_TXT_RSA_EXPORT1024_WITH_RC4_56_SHA,
+           TLS1_CK_RSA_EXPORT1024_WITH_RC4_56_SHA,
+           SSL_kRSA|SSL_aRSA|SSL_RC4|SSL_SHA|SSL_EXP56|SSL_TLSV1,
+           0,
+           SSL_ALL_CIPHERS
+           },
+       /* Cipher 65 */
+           {
+           1,
+           TLS1_TXT_DHE_DSS_EXPORT1024_WITH_RC4_56_SHA,
+           TLS1_CK_DHE_DSS_EXPORT1024_WITH_RC4_56_SHA,
+           SSL_kEDH|SSL_aDSS|SSL_RC4|SSL_SHA|SSL_EXP56|SSL_TLSV1,
+           0,
+           SSL_ALL_CIPHERS
+           },
+       /* Cipher 66 */
+           {
+           1,
+           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,
+           0,
+           SSL_ALL_CIPHERS
+           },
+#endif
+
 /* end of list */
        };
 
+static SSL3_ENC_METHOD SSLv3_enc_data={
+       ssl3_enc,
+       ssl3_mac,
+       ssl3_setup_key_block,
+       ssl3_generate_master_secret,
+       ssl3_change_cipher_state,
+       ssl3_final_finish_mac,
+       MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
+       ssl3_cert_verify_mac,
+       SSL3_MD_CLIENT_FINISHED_CONST,4,
+       SSL3_MD_SERVER_FINISHED_CONST,4,
+       ssl3_alert_code,
+       };
+
 static SSL_METHOD SSLv3_data= {
-       3,
+       SSL3_VERSION,
        ssl3_new,
        ssl3_clear,
        ssl3_free,
@@ -370,6 +451,7 @@ static SSL_METHOD SSLv3_data= {
        ssl3_write,
        ssl3_shutdown,
        ssl3_renegotiate,
+       ssl3_renegotiate_check,
        ssl3_ctrl,
        ssl3_ctx_ctrl,
        ssl3_get_cipher_by_char,
@@ -379,27 +461,27 @@ static SSL_METHOD SSLv3_data= {
        ssl3_get_cipher,
        ssl_bad_method,
        ssl3_default_timeout,
+       &SSLv3_enc_data,
        };
 
-static long ssl3_default_timeout()
+static long ssl3_default_timeout(void)
        {
        /* 2 hours, the 24 hours mentioned in the SSLv3 spec
         * is way too long for http, the cache would over fill */
        return(60*60*2);
        }
 
-SSL_METHOD *sslv3_base_method()
+SSL_METHOD *sslv3_base_method(void)
        {
        return(&SSLv3_data);
        }
 
-int ssl3_num_ciphers()
+int ssl3_num_ciphers(void)
        {
        return(SSL3_NUM_CIPHERS);
        }
 
-SSL_CIPHER *ssl3_get_cipher(u)
-unsigned int u;
+SSL_CIPHER *ssl3_get_cipher(unsigned int u)
        {
        if (u < SSL3_NUM_CIPHERS)
                return(&(ssl3_ciphers[SSL3_NUM_CIPHERS-1-u]));
@@ -408,89 +490,201 @@ unsigned int u;
        }
 
 /* The problem is that it may not be the correct record type */
-int ssl3_pending(s)
-SSL *s;
+int ssl3_pending(SSL *s)
        {
        return(s->s3->rrec.length);
        }
 
-int ssl3_new(s)
-SSL *s;
+int ssl3_new(SSL *s)
        {
        SSL3_CTX *s3;
 
        if ((s3=(SSL3_CTX *)Malloc(sizeof(SSL3_CTX))) == NULL) goto err;
+       memset(s3,0,sizeof(SSL3_CTX));
 
        s->s3=s3;
+       /*
        s->s3->tmp.ca_names=NULL;
        s->s3->tmp.key_block=NULL;
+       s->s3->tmp.key_block_length=0;
        s->s3->rbuf.buf=NULL;
        s->s3->wbuf.buf=NULL;
+       */
 
-       ssl3_clear(s);
+       s->method->ssl_clear(s);
        return(1);
 err:
        return(0);
        }
 
-void ssl3_free(s)
-SSL *s;
+void ssl3_free(SSL *s)
        {
+       if(s == NULL)
+           return;
+
        ssl3_cleanup_key_block(s);
        if (s->s3->rbuf.buf != NULL)
                Free(s->s3->rbuf.buf);
        if (s->s3->wbuf.buf != NULL)
                Free(s->s3->wbuf.buf);
+       if (s->s3->rrec.comp != NULL)
+               Free(s->s3->rrec.comp);
 #ifndef NO_DH
        if (s->s3->tmp.dh != NULL)
                DH_free(s->s3->tmp.dh);
 #endif
        if (s->s3->tmp.ca_names != NULL)
-               sk_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
+               sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
        memset(s->s3,0,sizeof(SSL3_CTX));
        Free(s->s3);
        s->s3=NULL;
        }
 
-void ssl3_clear(s)
-SSL *s;
+void ssl3_clear(SSL *s)
        {
        unsigned char *rp,*wp;
 
        ssl3_cleanup_key_block(s);
        if (s->s3->tmp.ca_names != NULL)
-               sk_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
+               sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
+
+       if (s->s3->rrec.comp != NULL)
+               {
+               Free(s->s3->rrec.comp);
+               s->s3->rrec.comp=NULL;
+               }
 
        rp=s->s3->rbuf.buf;
        wp=s->s3->wbuf.buf;
 
        memset(s->s3,0,sizeof(SSL3_CTX));
-       if (rp != NULL)
-               {
-               s->packet= &(s->s3->rbuf.buf[0]);
-               s->s3->rbuf.buf=rp;
-               s->s3->wbuf.buf=wp;
-               }
-       else
-               s->packet=NULL;
+       if (rp != NULL) s->s3->rbuf.buf=rp;
+       if (wp != NULL) s->s3->wbuf.buf=wp;
+
+       ssl_free_wbio_buffer(s);
+
        s->packet_length=0;
-       s->version=3;
+       s->s3->renegotiate=0;
+       s->s3->total_renegotiations=0;
+       s->s3->num_renegotiations=0;
+       s->s3->in_read_app_data=0;
+       s->version=SSL3_VERSION;
        }
 
-long ssl3_ctrl(s,cmd,larg,parg)
-SSL *s;
-int cmd;
-long larg;
-char *parg;
+long ssl3_ctrl(SSL *s, int cmd, long larg, char *parg)
        {
-       return(0);
+       int ret=0;
+
+#if !defined(NO_DSA) || !defined(NO_RSA)
+       if (
+#ifndef NO_RSA
+           cmd == SSL_CTRL_SET_TMP_RSA ||
+           cmd == SSL_CTRL_SET_TMP_RSA_CB ||
+#endif
+#ifndef NO_DSA
+           cmd == SSL_CTRL_SET_TMP_DH ||
+           cmd == SSL_CTRL_SET_TMP_DH_CB ||
+#endif
+               0)
+               {
+               if (!ssl_cert_instantiate(&s->cert, s->ctx->default_cert)) 
+                       {
+                       SSLerr(SSL_F_SSL3_CTRL, ERR_R_MALLOC_FAILURE);
+                       return(0);
+                       }
+               }
+#endif
+
+       switch (cmd)
+               {
+       case SSL_CTRL_GET_SESSION_REUSED:
+               ret=s->hit;
+               break;
+       case SSL_CTRL_GET_CLIENT_CERT_REQUEST:
+               break;
+       case SSL_CTRL_GET_NUM_RENEGOTIATIONS:
+               ret=s->s3->num_renegotiations;
+               break;
+       case SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS:
+               ret=s->s3->num_renegotiations;
+               s->s3->num_renegotiations=0;
+               break;
+       case SSL_CTRL_GET_TOTAL_RENEGOTIATIONS:
+               ret=s->s3->total_renegotiations;
+               break;
+       case SSL_CTRL_GET_FLAGS:
+               ret=(int)(s->s3->flags);
+               break;
+#ifndef 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) ||
+                    (EVP_PKEY_size(s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey) > (512/8))))
+                       ret = 1;
+               break;
+       case SSL_CTRL_SET_TMP_RSA:
+               {
+                       RSA *rsa = (RSA *)parg;
+                       if (rsa == NULL) {
+                               SSLerr(SSL_F_SSL3_CTRL, ERR_R_PASSED_NULL_PARAMETER);
+                               return(ret);
+                       }
+                       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;
+                       ret = 1;
+               }
+               break;
+       case SSL_CTRL_SET_TMP_RSA_CB:
+#ifndef NOPROTO
+               s->cert->rsa_tmp_cb = (RSA *(*)(SSL *, int, int))parg;
+#else
+               s->cert->rsa_tmp_cb = (RSA *(*)())parg;
+#endif
+               break;
+#endif
+#ifndef NO_DH
+       case SSL_CTRL_SET_TMP_DH:
+               {
+                       DH *dh = (DH *)parg;
+                       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);
+                               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;
+                       ret = 1;
+               }
+               break;
+       case SSL_CTRL_SET_TMP_DH_CB:
+#ifndef NOPROTO
+               s->cert->dh_tmp_cb = (DH *(*)(SSL *, int, int))parg;
+#else
+               s->cert->dh_tmp_cb = (DH *(*)())parg;
+#endif
+               break;
+#endif
+       default:
+               break;
+               }
+       return(ret);
        }
 
-long ssl3_ctx_ctrl(ctx,cmd,larg,parg)
-SSL_CTX *ctx;
-int cmd;
-long larg;
-char *parg;
+long ssl3_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, char *parg)
        {
        CERT *cert;
 
@@ -507,7 +701,7 @@ char *parg;
                        return(1);
                else
                        return(0);
-               break;
+               /* break; */
        case SSL_CTRL_SET_TMP_RSA:
                {
                RSA *rsa;
@@ -535,15 +729,20 @@ char *parg;
                        return(1);
                        }
                }
-               break;
+               /* break; */
        case SSL_CTRL_SET_TMP_RSA_CB:
+#ifndef NOPROTO
+               cert->rsa_tmp_cb=(RSA *(*)(SSL *, int, int))parg;
+#else
                cert->rsa_tmp_cb=(RSA *(*)())parg;
+#endif
                break;
 #endif
 #ifndef NO_DH
        case SSL_CTRL_SET_TMP_DH:
                {
                DH *new=NULL,*dh;
+               int rret=0;
 
                dh=(DH *)parg;
                if (    ((new=DHparams_dup(dh)) == NULL) ||
@@ -551,21 +750,35 @@ char *parg;
                        {
                        SSLerr(SSL_F_SSL3_CTX_CTRL,ERR_R_DH_LIB);
                        if (new != NULL) DH_free(new);
-                       return(0);
                        }
                else
                        {
                        if (cert->dh_tmp != NULL)
                                DH_free(cert->dh_tmp);
                        cert->dh_tmp=new;
-                       return(1);
+                       rret=1;
                        }
+               return(rret);
                }
-               break;
+               /*break; */
        case SSL_CTRL_SET_TMP_DH_CB:
+#ifndef NOPROTO
+               cert->dh_tmp_cb=(DH *(*)(SSL *, int, int))parg;
+#else
                cert->dh_tmp_cb=(DH *(*)())parg;
+#endif
                break;
 #endif
+       /* A Thawte special :-) */
+       case SSL_CTRL_EXTRA_CHAIN_CERT:
+               if (ctx->extra_certs == NULL)
+                       {
+                       if ((ctx->extra_certs=sk_X509_new_null()) == NULL)
+                               return(0);
+                       }
+               sk_X509_push(ctx->extra_certs,(X509 *)parg);
+               break;
+
        default:
                return(0);
                }
@@ -574,8 +787,7 @@ char *parg;
 
 /* This function needs to check if the ciphers required are actually
  * available */
-SSL_CIPHER *ssl3_get_cipher_by_char(p)
-unsigned char *p;
+SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p)
        {
        static int init=1;
        static SSL_CIPHER *sorted[SSL3_NUM_CIPHERS];
@@ -607,9 +819,7 @@ unsigned char *p;
                return(*cpp);
        }
 
-int ssl3_put_cipher_by_char(c,p)
-SSL_CIPHER *c;
-unsigned char *p;
+int ssl3_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p)
        {
        long l;
 
@@ -623,52 +833,7 @@ unsigned char *p;
        return(2);
        }
 
-void ssl3_generate_key_block(s,km,num)
-SSL *s;
-unsigned char *km;
-int num;
-       {
-       MD5_CTX m5;
-       SHA_CTX s1;
-       unsigned char buf[8],smd[SHA_DIGEST_LENGTH];
-       unsigned char c='A';
-       int i,j,k;
-
-       k=0;
-       for (i=0; i<num; i+=MD5_DIGEST_LENGTH)
-               {
-               k++;
-               for (j=0; j<k; j++)
-                       buf[j]=c;
-               c++;
-               SHA1_Init(  &s1);
-               SHA1_Update(&s1,buf,k);
-               SHA1_Update(&s1,s->session->master_key,
-                       s->session->master_key_length);
-               SHA1_Update(&s1,s->s3->server_random,SSL3_RANDOM_SIZE);
-               SHA1_Update(&s1,s->s3->client_random,SSL3_RANDOM_SIZE);
-               SHA1_Final( smd,&s1);
-
-               MD5_Init(  &m5);
-               MD5_Update(&m5,s->session->master_key,
-                       s->session->master_key_length);
-               MD5_Update(&m5,smd,SHA_DIGEST_LENGTH);
-               if ((i+MD5_DIGEST_LENGTH) > num)
-                       {
-                       MD5_Final(smd,&m5);
-                       memcpy(km,smd,(num-i));
-                       }
-               else
-                       MD5_Final(km,&m5);
-
-               km+=MD5_DIGEST_LENGTH;
-               }
-       memset(smd,0,SHA_DIGEST_LENGTH);
-       }
-
-int ssl3_part_read(s,i)
-SSL *s;
-int i;
+int ssl3_part_read(SSL *s, int i)
        {
        s->rwstate=SSL_READING;
 
@@ -683,9 +848,8 @@ int i;
                }
        }
 
-SSL_CIPHER *ssl3_choose_cipher(s,have,pref)
-SSL *s;
-STACK *have,*pref;
+SSL_CIPHER *ssl3_choose_cipher(SSL *s, STACK_OF(SSL_CIPHER) *have,
+            STACK_OF(SSL_CIPHER) *pref)
        {
        SSL_CIPHER *c,*ret=NULL;
        int i,j,ok;
@@ -698,46 +862,56 @@ STACK *have,*pref;
        else
                cert=s->ctx->default_cert;
 
-       ssl_set_cert_masks(cert);
-       mask=cert->mask;
-       emask=cert->export_mask;
-                       
-       sk_set_cmp_func(pref,ssl_cipher_ptr_id_cmp);
+       sk_SSL_CIPHER_set_cmp_func(pref,ssl_cipher_ptr_id_cmp);
+
+#ifdef CIPHER_DEBUG
+       printf("Have:\n");
+       for(i=0 ; i < sk_num(pref) ; ++i)
+           {
+           c=(SSL_CIPHER *)sk_value(pref,i);
+           printf("%p:%s\n",c,c->name);
+           }
+#endif
 
-       for (i=0; i<sk_num(have); i++)
+       for (i=0; i<sk_SSL_CIPHER_num(have); i++)
                {
-               c=(SSL_CIPHER *)sk_value(have,i);
+               c=sk_SSL_CIPHER_value(have,i);
+
+               ssl_set_cert_masks(cert,s->ctx->default_cert,c);
+               mask=cert->mask;
+               emask=cert->export_mask;
+                       
                alg=c->algorithms&(SSL_MKEY_MASK|SSL_AUTH_MASK);
-               if (alg & SSL_EXPORT)
+               if (SSL_IS_EXPORT(c->algorithms))
                        {
                        ok=((alg & emask) == alg)?1:0;
 #ifdef CIPHER_DEBUG
-                       printf("%d:[%08lX:%08lX]%s\n",ok,alg,mask,c->name);
+                       printf("%d:[%08lX:%08lX]%p:%s (export)\n",ok,alg,emask,
+                              c,c->name);
 #endif
                        }
                else
                        {
                        ok=((alg & mask) == alg)?1:0;
 #ifdef CIPHER_DEBUG
-                       printf("%d:[%08lX:%08lX]%s\n",ok,alg,mask,c->name);
+                       printf("%d:[%08lX:%08lX]%p:%s\n",ok,alg,mask,c,
+                              c->name);
 #endif
                        }
 
                if (!ok) continue;
        
-               j=sk_find(pref,(char *)c);
+               j=sk_SSL_CIPHER_find(pref,c);
                if (j >= 0)
                        {
-                       ret=(SSL_CIPHER *)sk_value(pref,j);
+                       ret=sk_SSL_CIPHER_value(pref,j);
                        break;
                        }
                }
        return(ret);
        }
 
-int ssl3_get_req_cert_type(s,p)
-SSL *s;
-unsigned char *p;
+int ssl3_get_req_cert_type(SSL *s, unsigned char *p)
        {
        int ret=0;
        unsigned long alg;
@@ -747,32 +921,34 @@ unsigned char *p;
 #ifndef NO_DH
        if (alg & (SSL_kDHr|SSL_kEDH))
                {
-#ifndef NO_RSA
+#  ifndef NO_RSA
                p[ret++]=SSL3_CT_RSA_FIXED_DH;
-#endif
-#ifndef NO_DSA
+#  endif
+#  ifndef NO_DSA
                p[ret++]=SSL3_CT_DSS_FIXED_DH;
-#endif
+#  endif
                }
-       if (alg & (SSL_kEDH|SSL_kDHd|SSL_kDHr))
+       if ((s->version == SSL3_VERSION) &&
+               (alg & (SSL_kEDH|SSL_kDHd|SSL_kDHr)))
                {
-#ifndef NO_RSA
+#  ifndef NO_RSA
                p[ret++]=SSL3_CT_RSA_EPHEMERAL_DH;
-#endif
-#ifndef NO_DSA
+#  endif
+#  ifndef NO_DSA
                p[ret++]=SSL3_CT_DSS_EPHEMERAL_DH;
-#endif
+#  endif
                }
 #endif /* !NO_DH */
 #ifndef NO_RSA
        p[ret++]=SSL3_CT_RSA_SIGN;
 #endif
-/*     p[ret++]=SSL3_CT_DSS_SIGN; */
+#ifndef NO_DSA
+       p[ret++]=SSL3_CT_DSS_SIGN;
+#endif
        return(ret);
        }
 
-int ssl3_shutdown(s)
-SSL *s;
+int ssl3_shutdown(SSL *s)
        {
 
        /* Don't do anything much if we have not done the handshake or
@@ -787,7 +963,7 @@ SSL *s;
                {
                s->shutdown|=SSL_SENT_SHUTDOWN;
 #if 1
-               ssl3_send_alert(s,SSL3_AL_WARNING,SSL3_AD_CLOSE_NOTIFY);
+               ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_CLOSE_NOTIFY);
 #endif
                /* our shutdown alert has been sent now, and if it still needs
                 * to be written, s->s3->alert_dispatch will be true */
@@ -812,13 +988,9 @@ SSL *s;
                return(0);
        }
 
-int ssl3_write(s,buf,len)
-SSL *s;
-const char *buf;
-int len;
+int ssl3_write(SSL *s, const char *buf, int len)
        {
        int ret,n;
-       BIO *under;
 
 #if 0
        if (s->shutdown & SSL_SEND_SHUTDOWN)
@@ -827,7 +999,8 @@ int len;
                return(0);
                }
 #endif
-       errno=0;
+       clear_sys_error();
+       if (s->s3->renegotiate) ssl3_renegotiate_check(s);
 
        /* This is an experimental flag that sends the
         * last handshake message in the same packet as the first
@@ -840,7 +1013,7 @@ int len;
                if (s->s3->delay_buf_pop_ret == 0)
                        {
                        ret=ssl3_write_bytes(s,SSL3_RT_APPLICATION_DATA,
-                               (char *)buf,len);
+                                            buf,len);
                        if (ret <= 0) return(ret);
 
                        s->s3->delay_buf_pop_ret=ret;
@@ -851,45 +1024,58 @@ int len;
                if (n <= 0) return(n);
                s->rwstate=SSL_NOTHING;
 
-               /* We have flushed the buffer */
-               under=BIO_pop(s->wbio);
-               s->wbio=under;
-               BIO_free(s->bbio);
-               s->bbio=NULL;
+               /* We have flushed the buffer, so remove it */
+               ssl_free_wbio_buffer(s);
+               s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
+
                ret=s->s3->delay_buf_pop_ret;
                s->s3->delay_buf_pop_ret=0;
-
-               s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
                }
        else
                {
                ret=ssl3_write_bytes(s,SSL3_RT_APPLICATION_DATA,
-                       (char *)buf,len);
+                                    buf,len);
                if (ret <= 0) return(ret);
                }
+
        return(ret);
        }
 
-int ssl3_read(s,buf,len)
-SSL *s;
-char *buf;
-int len;
+int ssl3_read(SSL *s, char *buf, int len)
        {
-       errno=0;
-       return(ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len));
+       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);
+       if ((ret == -1) && (s->s3->in_read_app_data == 0))
+               {
+               ERR_get_error(); /* clear the error */
+               s->s3->in_read_app_data=0;
+               s->in_handshake++;
+               ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len);
+               s->in_handshake--;
+               }
+       else
+               s->s3->in_read_app_data=0;
+
+       return(ret);
        }
 
-int ssl3_peek(s,buf,len)
-SSL *s;
-char *buf;
-int len;
+int ssl3_peek(SSL *s, char *buf, int len)
        {
        SSL3_RECORD *rr;
        int n;
 
        rr= &(s->s3->rrec);
        if ((rr->length == 0) || (rr->type != SSL3_RT_APPLICATION_DATA))
-               return(0);
+               {
+               n=ssl3_read(s,buf,1);
+               if (n <= 0) return(n);
+               rr->length++;
+               rr->off--;
+               }
 
        if ((unsigned int)len > rr->length)
                n=rr->length;
@@ -899,8 +1085,7 @@ int len;
        return(n);
        }
 
-int ssl3_renegotiate(s)
-SSL *s;
+int ssl3_renegotiate(SSL *s)
        {
        if (s->handshake_func == NULL)
                return(1);
@@ -908,8 +1093,32 @@ SSL *s;
        if (s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS)
                return(0);
 
-       if (!SSL_in_init(s))
-               s->state=SSL_ST_RENEGOTIATE;
+       s->s3->renegotiate=1;
        return(1);
        }
 
+int ssl3_renegotiate_check(SSL *s)
+       {
+       int ret=0;
+
+       if (s->s3->renegotiate)
+               {
+               if (    (s->s3->rbuf.left == 0) &&
+                       (s->s3->wbuf.left == 0) &&
+                       !SSL_in_init(s))
+                       {
+/*
+if we are the server, and we have sent a 'RENEGOTIATE' message, we
+need to go to SSL_ST_ACCEPT.\1e
+*/
+                       /* SSL_ST_ACCEPT */
+                       s->state=SSL_ST_RENEGOTIATE;
+                       s->s3->renegotiate=0;
+                       s->s3->num_renegotiations++;
+                       s->s3->total_renegotiations++;
+                       ret=1;
+                       }
+               }
+       return(ret);
+       }
+