lib/libcrypto/bio/bio_cb.c

   1 /* $OpenBSD: bio_cb.c,v 1.16 2014/12/08 03:54:19 bcook Exp $ */
   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 <stdlib.h>
  61 #include <string.h>
  62
  63 #include <openssl/err.h>
  64 #include <openssl/bio.h>
  65
  66 long
  67 BIO_debug_callback(BIO *bio, int cmd, const char *argp, int argi, long argl,
  68     long ret)
  69 {
  70         BIO *b;
  71         char buf[256];
  72         char *p;
  73         long r = 1;
  74         size_t p_maxlen;
  75
  76         if (BIO_CB_RETURN & cmd)
  77                 r = ret;
  78
  79         snprintf(buf, sizeof buf, "BIO[%p]:", bio);
  80         p = &(buf[14]);
  81         p_maxlen = sizeof buf - 14;
  82         switch (cmd) {
  83         case BIO_CB_FREE:
  84                 snprintf(p, p_maxlen, "Free - %s\n", bio->method->name);
  85                 break;
  86         case BIO_CB_READ:
  87                 if (bio->method->type & BIO_TYPE_DESCRIPTOR)
  88                         snprintf(p, p_maxlen,
  89                             "read(%d,%lu) - %s fd=%d\n",
  90                             bio->num, (unsigned long)argi,
  91                             bio->method->name, bio->num);
  92                 else
  93                         snprintf(p, p_maxlen, "read(%d,%lu) - %s\n",
  94                             bio->num, (unsigned long)argi, bio->method->name);
  95                 break;
  96         case BIO_CB_WRITE:
  97                 if (bio->method->type & BIO_TYPE_DESCRIPTOR)
  98                         snprintf(p, p_maxlen,
  99                             "write(%d,%lu) - %s fd=%d\n",
 100                             bio->num, (unsigned long)argi,
 101                             bio->method->name, bio->num);
 102                 else
 103                         snprintf(p, p_maxlen, "write(%d,%lu) - %s\n",
 104                             bio->num, (unsigned long)argi, bio->method->name);
 105                 break;
 106         case BIO_CB_PUTS:
 107                 snprintf(p, p_maxlen,
 108                     "puts() - %s\n", bio->method->name);
 109                 break;
 110         case BIO_CB_GETS:
 111                 snprintf(p, p_maxlen, "gets(%lu) - %s\n",
 112                     (unsigned long)argi, bio->method->name);
 113                 break;
 114         case BIO_CB_CTRL:
 115                 snprintf(p, p_maxlen, "ctrl(%lu) - %s\n",
 116                     (unsigned long)argi, bio->method->name);
 117                 break;
 118         case BIO_CB_RETURN|BIO_CB_READ:
 119                 snprintf(p, p_maxlen, "read return %ld\n", ret);
 120                 break;
 121         case BIO_CB_RETURN|BIO_CB_WRITE:
 122                 snprintf(p, p_maxlen, "write return %ld\n", ret);
 123                 break;
 124         case BIO_CB_RETURN|BIO_CB_GETS:
 125                 snprintf(p, p_maxlen, "gets return %ld\n", ret);
 126                 break;
 127         case BIO_CB_RETURN|BIO_CB_PUTS:
 128                 snprintf(p, p_maxlen, "puts return %ld\n", ret);
 129                 break;
 130         case BIO_CB_RETURN|BIO_CB_CTRL:
 131                 snprintf(p, p_maxlen, "ctrl return %ld\n", ret);
 132                 break;
 133         default:
 134                 snprintf(p, p_maxlen,
 135                     "bio callback - unknown type (%d)\n", cmd);
 136                 break;
 137         }
 138
 139         b = (BIO *)bio->cb_arg;
 140         if (b != NULL)
 141                 BIO_write(b, buf, strlen(buf));
 142         else
 143                 fputs(buf, stderr);
 144         return (r);
 145 }