sl@0: /* ssl/s23_pkt.c */
sl@0: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
sl@0:  * All rights reserved.
sl@0:  *
sl@0:  * This package is an SSL implementation written
sl@0:  * by Eric Young (eay@cryptsoft.com).
sl@0:  * The implementation was written so as to conform with Netscapes SSL.
sl@0:  * 
sl@0:  * This library is free for commercial and non-commercial use as long as
sl@0:  * the following conditions are aheared to.  The following conditions
sl@0:  * apply to all code found in this distribution, be it the RC4, RSA,
sl@0:  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
sl@0:  * included with this distribution is covered by the same copyright terms
sl@0:  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
sl@0:  * 
sl@0:  * Copyright remains Eric Young's, and as such any Copyright notices in
sl@0:  * the code are not to be removed.
sl@0:  * If this package is used in a product, Eric Young should be given attribution
sl@0:  * as the author of the parts of the library used.
sl@0:  * This can be in the form of a textual message at program startup or
sl@0:  * in documentation (online or textual) provided with the package.
sl@0:  * 
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  * 1. Redistributions of source code must retain the copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 3. All advertising materials mentioning features or use of this software
sl@0:  *    must display the following acknowledgement:
sl@0:  *    "This product includes cryptographic software written by
sl@0:  *     Eric Young (eay@cryptsoft.com)"
sl@0:  *    The word 'cryptographic' can be left out if the rouines from the library
sl@0:  *    being used are not cryptographic related :-).
sl@0:  * 4. If you include any Windows specific code (or a derivative thereof) from 
sl@0:  *    the apps directory (application code) you must include an acknowledgement:
sl@0:  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
sl@0:  * 
sl@0:  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
sl@0:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sl@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
sl@0:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
sl@0:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
sl@0:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
sl@0:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
sl@0:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
sl@0:  * SUCH DAMAGE.
sl@0:  * 
sl@0:  * The licence and distribution terms for any publically available version or
sl@0:  * derivative of this code cannot be changed.  i.e. this code cannot simply be
sl@0:  * copied and put under another distribution licence
sl@0:  * [including the GNU Public Licence.]
sl@0:  */
sl@0: 
sl@0: #include <stdio.h>
sl@0: #include <errno.h>
sl@0: #define USE_SOCKETS
sl@0: #include "ssl_locl.h"
sl@0: #include <openssl/evp.h>
sl@0: #include <openssl/buffer.h>
sl@0: 
sl@0: int ssl23_write_bytes(SSL *s)
sl@0: 	{
sl@0: 	int i,num,tot;
sl@0: 	char *buf;
sl@0: 
sl@0: 	buf=s->init_buf->data;
sl@0: 	tot=s->init_off;
sl@0: 	num=s->init_num;
sl@0: 	for (;;)
sl@0: 		{
sl@0: 		s->rwstate=SSL_WRITING;
sl@0: 		i=BIO_write(s->wbio,&(buf[tot]),num);
sl@0: 		if (i <= 0)
sl@0: 			{
sl@0: 			s->init_off=tot;
sl@0: 			s->init_num=num;
sl@0: 			return(i);
sl@0: 			}
sl@0: 		s->rwstate=SSL_NOTHING;
sl@0: 		if (i == num) return(tot+i);
sl@0: 
sl@0: 		num-=i;
sl@0: 		tot+=i;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: /* return regularly only when we have read (at least) 'n' bytes */
sl@0: int ssl23_read_bytes(SSL *s, int n)
sl@0: 	{
sl@0: 	unsigned char *p;
sl@0: 	int j;
sl@0: 
sl@0: 	if (s->packet_length < (unsigned int)n)
sl@0: 		{
sl@0: 		p=s->packet;
sl@0: 
sl@0: 		for (;;)
sl@0: 			{
sl@0: 			s->rwstate=SSL_READING;
sl@0: 			j=BIO_read(s->rbio,(char *)&(p[s->packet_length]),
sl@0: 				n-s->packet_length);
sl@0: 			if (j <= 0)
sl@0: 				return(j);
sl@0: 			s->rwstate=SSL_NOTHING;
sl@0: 			s->packet_length+=j;
sl@0: 			if (s->packet_length >= (unsigned int)n)
sl@0: 				return(s->packet_length);
sl@0: 			}
sl@0: 		}
sl@0: 	return(n);
sl@0: 	}
sl@0: