crypto/openssl/crypto/bio/bio_cb.c

   1 /* crypto/bio/bio_cb.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 <string.h>
  61 #include <stdlib.h>
  62 #include "cryptlib.h"
  63 #include <openssl/bio.h>
  64 #include <openssl/err.h>
  65
  66 long MS_CALLBACK BIO_debug_callback(BIO *bio, int cmd, const char *argp,
  67                                     int argi, long argl, long ret)
  68 {
  69     BIO *b;
  70     MS_STATIC char buf[256];
  71     char *p;
  72     long r = 1;
  73     int len;
  74     size_t p_maxlen;
  75
  76     if (BIO_CB_RETURN & cmd)
  77         r = ret;
  78
  79     len = BIO_snprintf(buf,sizeof buf,"BIO[%p]: ",(void *)bio);
  80
  81     p = buf + len;
  82     p_maxlen = sizeof(buf) - len;
  83
  84     switch (cmd) {
  85     case BIO_CB_FREE:
  86         BIO_snprintf(p, p_maxlen, "Free - %s\n", bio->method->name);
  87         break;
  88     case BIO_CB_READ:
  89         if (bio->method->type & BIO_TYPE_DESCRIPTOR)
  90             BIO_snprintf(p, p_maxlen, "read(%d,%lu) - %s fd=%d\n",
  91                          bio->num, (unsigned long)argi,
  92                          bio->method->name, bio->num);
  93         else
  94             BIO_snprintf(p, p_maxlen, "read(%d,%lu) - %s\n",
  95                          bio->num, (unsigned long)argi, bio->method->name);
  96         break;
  97     case BIO_CB_WRITE:
  98         if (bio->method->type & BIO_TYPE_DESCRIPTOR)
  99             BIO_snprintf(p, p_maxlen, "write(%d,%lu) - %s fd=%d\n",
 100                          bio->num, (unsigned long)argi,
 101                          bio->method->name, bio->num);
 102         else
 103             BIO_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         BIO_snprintf(p, p_maxlen, "puts() - %s\n", bio->method->name);
 108         break;
 109     case BIO_CB_GETS:
 110         BIO_snprintf(p, p_maxlen, "gets(%lu) - %s\n", (unsigned long)argi,
 111                      bio->method->name);
 112         break;
 113     case BIO_CB_CTRL:
 114         BIO_snprintf(p, p_maxlen, "ctrl(%lu) - %s\n", (unsigned long)argi,
 115                      bio->method->name);
 116         break;
 117     case BIO_CB_RETURN | BIO_CB_READ:
 118         BIO_snprintf(p, p_maxlen, "read return %ld\n", ret);
 119         break;
 120     case BIO_CB_RETURN | BIO_CB_WRITE:
 121         BIO_snprintf(p, p_maxlen, "write return %ld\n", ret);
 122         break;
 123     case BIO_CB_RETURN | BIO_CB_GETS:
 124         BIO_snprintf(p, p_maxlen, "gets return %ld\n", ret);
 125         break;
 126     case BIO_CB_RETURN | BIO_CB_PUTS:
 127         BIO_snprintf(p, p_maxlen, "puts return %ld\n", ret);
 128         break;
 129     case BIO_CB_RETURN | BIO_CB_CTRL:
 130         BIO_snprintf(p, p_maxlen, "ctrl return %ld\n", ret);
 131         break;
 132     default:
 133         BIO_snprintf(p, p_maxlen, "bio callback - unknown type (%d)\n", cmd);
 134         break;
 135     }
 136
 137     b = (BIO *)bio->cb_arg;
 138     if (b != NULL)
 139         BIO_write(b, buf, strlen(buf));
 140 #if !defined(OPENSSL_NO_STDIO) && !defined(OPENSSL_SYS_WIN16)
 141     else
 142         fputs(buf, stderr);
 143 #endif
 144     return (r);
 145 }