Import of old SSLeay release: SSLeay 0.9.0b

[openssl.git] / ssl / s23_clnt.c

diff --git a/ssl/s23_clnt.c b/ssl/s23_clnt.c
index 57d3623f3f001bb5c54c71622d7b154a4507fc60..a4661ebb687586ae58575a9f875ce4b615eca52e 100644 (file)
--- a/ssl/s23_clnt.c
+++ b/ssl/s23_clnt.c
@@ -1,5 +1,5 @@
 /* ssl/s23_clnt.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
@@ -76,10 +76,12 @@ static int ssl23_get_server_hello();
 static SSL_METHOD *ssl23_get_client_method(ver)
 int ver;
        {
-       if (ver == 2)
+       if (ver == SSL2_VERSION)
                return(SSLv2_client_method());
-       else if (ver == 3)
+       else if (ver == SSL3_VERSION)
                return(SSLv3_client_method());
+       else if (ver == TLS1_VERSION)
+               return(TLSv1_client_method());
        else
                return(NULL);
        }
@@ -111,7 +113,7 @@ SSL *s;
 
        RAND_seed((unsigned char *)&Time,sizeof(Time));
        ERR_clear_error();
-       errno=0;
+       clear_sys_error();
 
        if (s->info_callback != NULL)
                cb=s->info_callback;
@@ -134,7 +136,7 @@ SSL *s;
 
                        if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
 
-                       s->version=3;
+                       /* s->version=TLS1_VERSION; */
                        s->type=SSL_ST_CONNECT;
 
                        if (s->init_buf == NULL)
@@ -230,8 +232,26 @@ SSL *s;
                p=d+9;
 
                *(d++)=SSL2_MT_CLIENT_HELLO;
-               *(d++)=SSL3_VERSION_MAJOR;
-               *(d++)=SSL3_VERSION_MINOR;
+               if (!(s->options & SSL_OP_NO_TLSv1))
+                       {
+                       *(d++)=TLS1_VERSION_MAJOR;
+                       *(d++)=TLS1_VERSION_MINOR;
+                       }
+               else if (!(s->options & SSL_OP_NO_SSLv3))
+                       {
+                       *(d++)=SSL3_VERSION_MAJOR;
+                       *(d++)=SSL3_VERSION_MINOR;
+                       }
+               else if (!(s->options & SSL_OP_NO_SSLv2))
+                       {
+                       *(d++)=SSL2_VERSION_MAJOR;
+                       *(d++)=SSL2_VERSION_MINOR;
+                       }
+               else
+                       {
+                       SSLerr(SSL_F_SSL23_CLIENT_HELLO,SSL_R_NO_PROTOCOLS_AVAILABLE);
+                       return(-1);
+                       }
 
                /* Ciphers supported */
                i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),p);
@@ -251,7 +271,7 @@ SSL *s;
 #endif
                s2n(0,d);
 
-               if (s->ctx->options & SSL_OP_NETSCAPE_CHALLENGE_BUG)
+               if (s->options & SSL_OP_NETSCAPE_CHALLENGE_BUG)
                        ch_len=SSL2_CHALLENGE_LENGTH;
                else
                        ch_len=SSL2_MAX_CHALLENGE_LENGTH;
@@ -290,7 +310,6 @@ SSL *s;
        unsigned char *p;
        int i,ch_len;
        int n;
-       BIO *bbio;
 
        n=ssl23_read_bytes(s,7);
 
@@ -306,6 +325,11 @@ SSL *s;
                /* we need to clean up the SSLv3 setup and put in the
                 * sslv2 stuff. */
 
+               if (s->options & SSL_OP_NO_SSLv2)
+                       {
+                       SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_PROTOCOL);
+                       goto err;
+                       }
                if (s->s2 == NULL)
                        {
                        if (!ssl2_new(s))
@@ -314,7 +338,7 @@ SSL *s;
                else
                        ssl2_clear(s);
 
-               if (s->ctx->options & SSL_OP_NETSCAPE_CHALLENGE_BUG)
+               if (s->options & SSL_OP_NETSCAPE_CHALLENGE_BUG)
                        ch_len=SSL2_CHALLENGE_LENGTH;
                else
                        ch_len=SSL2_MAX_CHALLENGE_LENGTH;
@@ -355,33 +379,13 @@ SSL *s;
                }
        else if ((p[0] == SSL3_RT_HANDSHAKE) &&
                 (p[1] == SSL3_VERSION_MAJOR) &&
-                (p[2] == SSL3_VERSION_MINOR) &&
+                ((p[2] == SSL3_VERSION_MINOR) ||
+                 (p[2] == TLS1_VERSION_MINOR)) &&
                 (p[5] == SSL3_MT_SERVER_HELLO))
                {
-               /* we have sslv3 */
+               /* we have sslv3 or tls1 */
 
-               if (s->bbio == NULL)
-                       {
-                       bbio=BIO_new(BIO_f_buffer());
-                       if (bbio == NULL)
-                               {
-                               SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,ERR_R_BUF_LIB);
-                               goto err;
-                               }
-                       s->bbio=bbio;
-                       }
-               else
-                       bbio=s->bbio;
-
-               BIO_reset(bbio);
-               if (!BIO_set_write_buffer_size(bbio,16*1024))
-                       {
-                       SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,ERR_R_BUF_LIB);
-                       goto err;
-                       }
-
-               /* start the buffering */
-               s->wbio=BIO_push(s->bbio,s->wbio);
+               if (!ssl_init_wbio_buffer(s,1)) goto err;
 
                /* we are in this state */
                s->state=SSL3_ST_CR_SRVR_HELLO_A;
@@ -395,12 +399,30 @@ SSL *s;
                s->s3->rbuf.left=n;
                s->s3->rbuf.offset=0;
 
-               s->method=SSLv3_client_method();
+               if ((p[2] == SSL3_VERSION_MINOR) &&
+                       !(s->options & SSL_OP_NO_SSLv3))
+                       {
+                       s->version=SSL3_VERSION;
+                       s->method=SSLv3_client_method();
+                       }
+               else if ((p[2] == TLS1_VERSION_MINOR) &&
+                       !(s->options & SSL_OP_NO_TLSv1))
+                       {
+                       s->version=TLS1_VERSION;
+                       s->method=TLSv1_client_method();
+                       }
+               else
+                       {
+                       SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_PROTOCOL);
+                       goto err;
+                       }
+                       
                s->handshake_func=s->method->ssl_connect;
                }
        else if ((p[0] == SSL3_RT_ALERT) &&
                 (p[1] == SSL3_VERSION_MAJOR) &&
-                (p[2] == SSL3_VERSION_MINOR) &&
+                ((p[2] == SSL3_VERSION_MINOR) ||
+                 (p[2] == TLS1_VERSION_MINOR)) &&
                 (p[3] == 0) &&
                 (p[4] == 2))
                {
@@ -421,7 +443,7 @@ SSL *s;
                        }
 
                s->rwstate=SSL_NOTHING;
-               SSLerr(SSL_F_SSL3_READ_BYTES,1000+p[6]);
+               SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,1000+p[6]);
                goto err;
                }
        else