Line data    Source code

       1             : /* ssl/s23_pkt.c */
       2             : /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
       3             :  * All rights reserved.
       4             :  *
       5             :  * This package is an SSL implementation written
       6             :  * by Eric Young (eay@cryptsoft.com).
       7             :  * The implementation was written so as to conform with Netscapes SSL.
       8             :  *
       9             :  * This library is free for commercial and non-commercial use as long as
      10             :  * the following conditions are aheared to.  The following conditions
      11             :  * apply to all code found in this distribution, be it the RC4, RSA,
      12             :  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
      13             :  * included with this distribution is covered by the same copyright terms
      14             :  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
      15             :  *
      16             :  * Copyright remains Eric Young's, and as such any Copyright notices in
      17             :  * the code are not to be removed.
      18             :  * If this package is used in a product, Eric Young should be given attribution
      19             :  * as the author of the parts of the library used.
      20             :  * This can be in the form of a textual message at program startup or
      21             :  * in documentation (online or textual) provided with the package.
      22             :  *
      23             :  * Redistribution and use in source and binary forms, with or without
      24             :  * modification, are permitted provided that the following conditions
      25             :  * are met:
      26             :  * 1. Redistributions of source code must retain the copyright
      27             :  *    notice, this list of conditions and the following disclaimer.
      28             :  * 2. Redistributions in binary form must reproduce the above copyright
      29             :  *    notice, this list of conditions and the following disclaimer in the
      30             :  *    documentation and/or other materials provided with the distribution.
      31             :  * 3. All advertising materials mentioning features or use of this software
      32             :  *    must display the following acknowledgement:
      33             :  *    "This product includes cryptographic software written by
      34             :  *     Eric Young (eay@cryptsoft.com)"
      35             :  *    The word 'cryptographic' can be left out if the rouines from the library
      36             :  *    being used are not cryptographic related :-).
      37             :  * 4. If you include any Windows specific code (or a derivative thereof) from
      38             :  *    the apps directory (application code) you must include an acknowledgement:
      39             :  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
      40             :  *
      41             :  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
      42             :  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
      43             :  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
      44             :  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
      45             :  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
      46             :  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
      47             :  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
      48             :  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
      49             :  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
      50             :  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
      51             :  * SUCH DAMAGE.
      52             :  *
      53             :  * The licence and distribution terms for any publically available version or
      54             :  * derivative of this code cannot be changed.  i.e. this code cannot simply be
      55             :  * copied and put under another distribution licence
      56             :  * [including the GNU Public Licence.]
      57             :  */
      58             : 
      59             : #include <stdio.h>
      60             : #include <errno.h>
      61             : #define USE_SOCKETS
      62             : #include "ssl_locl.h"
      63             : #include <openssl/evp.h>
      64             : #include <openssl/buffer.h>
      65             : 
      66           0 : int ssl23_write_bytes(SSL *s)
      67             : {
      68             :     int i, num, tot;
      69             :     char *buf;
      70             : 
      71           0 :     buf = s->init_buf->data;
      72           0 :     tot = s->init_off;
      73           0 :     num = s->init_num;
      74             :     for (;;) {
      75           0 :         s->rwstate = SSL_WRITING;
      76           0 :         i = BIO_write(s->wbio, &(buf[tot]), num);
      77           0 :         if (i <= 0) {
      78           0 :             s->init_off = tot;
      79           0 :             s->init_num = num;
      80           0 :             return (i);
      81             :         }
      82           0 :         s->rwstate = SSL_NOTHING;
      83           0 :         if (i == num)
      84           0 :             return (tot + i);
      85             : 
      86           0 :         num -= i;
      87           0 :         tot += i;
      88           0 :     }
      89             : }
      90             : 
      91             : /* return regularly only when we have read (at least) 'n' bytes */
      92           0 : int ssl23_read_bytes(SSL *s, int n)
      93             : {
      94             :     unsigned char *p;
      95             :     int j;
      96             : 
      97           0 :     if (s->packet_length < (unsigned int)n) {
      98           0 :         p = s->packet;
      99             : 
     100             :         for (;;) {
     101           0 :             s->rwstate = SSL_READING;
     102           0 :             j = BIO_read(s->rbio, (char *)&(p[s->packet_length]),
     103           0 :                          n - s->packet_length);
     104           0 :             if (j <= 0)
     105             :                 return (j);
     106           0 :             s->rwstate = SSL_NOTHING;
     107           0 :             s->packet_length += j;
     108           0 :             if (s->packet_length >= (unsigned int)n)
     109           0 :                 return (s->packet_length);
     110             :         }
     111             :     }
     112             :     return (n);
     113             : }