/* ssl/s23_pkt.c */

 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)

  * All rights reserved.

  *

  * This package is an SSL implementation written

  * by Eric Young (eay@cryptsoft.com).

  * The implementation was written so as to conform with Netscapes SSL.

  * 

  * This library is free for commercial and non-commercial use as long as

  * the following conditions are aheared to.  The following conditions

  * apply to all code found in this distribution, be it the RC4, RSA,

  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation

  * included with this distribution is covered by the same copyright terms

  * except that the holder is Tim Hudson (tjh@cryptsoft.com).

  * 

  * Copyright remains Eric Young's, and as such any Copyright notices in

  * the code are not to be removed.

  * If this package is used in a product, Eric Young should be given attribution

  * as the author of the parts of the library used.

  * This can be in the form of a textual message at program startup or

  * in documentation (online or textual) provided with the package.

  * 

  * 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 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 acknowledgement:

  *    "This product includes cryptographic software written by

  *     Eric Young (eay@cryptsoft.com)"

  *    The word 'cryptographic' can be left out if the rouines from the library

  *    being used are not cryptographic related :-).

  * 4. If you include any Windows specific code (or a derivative thereof) from 

  *    the apps directory (application code) you must include an acknowledgement:

  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"

  * 

  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND

  * ANY EXPRESS 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 AUTHOR OR 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.

  * 

  * The licence and distribution terms for any publically available version or

  * derivative of this code cannot be changed.  i.e. this code cannot simply be

  * copied and put under another distribution licence

  * [including the GNU Public Licence.]

  */

 #include <stdio.h>

 #include <errno.h>

 #define USE_SOCKETS

 #include "ssl_locl.h"

 #include <openssl/evp.h>

 #include <openssl/buffer.h>

 int ssl23_write_bytes(SSL *s)

 	{

 	int i,num,tot;

 	char *buf;

 	buf=s->init_buf->data;

 	tot=s->init_off;

 	num=s->init_num;

 	for (;;)

 		{

 		s->rwstate=SSL_WRITING;

 		i=BIO_write(s->wbio,&(buf[tot]),num);

 		if (i <= 0)

 			{

 			s->init_off=tot;

 			s->init_num=num;

 			return(i);

 			}

 		s->rwstate=SSL_NOTHING;

 		if (i == num) return(tot+i);

 		num-=i;

 		tot+=i;

 		}

 	}

 /* return regularly only when we have read (at least) 'n' bytes */

 int ssl23_read_bytes(SSL *s, int n)

 	{

 	unsigned char *p;

 	int j;

 	if (s->packet_length < (unsigned int)n)

 		{

 		p=s->packet;

 		for (;;)

 			{

 			s->rwstate=SSL_READING;

 			j=BIO_read(s->rbio,(char *)&(p[s->packet_length]),

 				n-s->packet_length);

 			if (j <= 0)

 				return(j);

 			s->rwstate=SSL_NOTHING;

 			s->packet_length+=j;

 			if (s->packet_length >= (unsigned int)n)

 				return(s->packet_length);

 			}

 		}

 	return(n);

 	}