bio_cb.c revision 296465 
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
66long 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    size_t p_maxlen;
74
75    if (BIO_CB_RETURN & cmd)
76        r = ret;
77
78    BIO_snprintf(buf, sizeof buf, "BIO[%08lX]:", (unsigned long)bio);
79    p = &(buf[14]);
80    p_maxlen = sizeof buf - 14;
81    switch (cmd) {
82    case BIO_CB_FREE:
83        BIO_snprintf(p, p_maxlen, "Free - %s\n", bio->method->name);
84        break;
85    case BIO_CB_READ:
86        if (bio->method->type & BIO_TYPE_DESCRIPTOR)
87            BIO_snprintf(p, p_maxlen, "read(%d,%d) - %s fd=%d\n",
88                         bio->num, argi, bio->method->name, bio->num);
89        else
90            BIO_snprintf(p, p_maxlen, "read(%d,%d) - %s\n",
91                         bio->num, argi, bio->method->name);
92        break;
93    case BIO_CB_WRITE:
94        if (bio->method->type & BIO_TYPE_DESCRIPTOR)
95            BIO_snprintf(p, p_maxlen, "write(%d,%d) - %s fd=%d\n",
96                         bio->num, argi, bio->method->name, bio->num);
97        else
98            BIO_snprintf(p, p_maxlen, "write(%d,%d) - %s\n",
99                         bio->num, argi, bio->method->name);
100        break;
101    case BIO_CB_PUTS:
102        BIO_snprintf(p, p_maxlen, "puts() - %s\n", bio->method->name);
103        break;
104    case BIO_CB_GETS:
105        BIO_snprintf(p, p_maxlen, "gets(%d) - %s\n", argi, bio->method->name);
106        break;
107    case BIO_CB_CTRL:
108        BIO_snprintf(p, p_maxlen, "ctrl(%d) - %s\n", argi, bio->method->name);
109        break;
110    case BIO_CB_RETURN | BIO_CB_READ:
111        BIO_snprintf(p, p_maxlen, "read return %ld\n", ret);
112        break;
113    case BIO_CB_RETURN | BIO_CB_WRITE:
114        BIO_snprintf(p, p_maxlen, "write return %ld\n", ret);
115        break;
116    case BIO_CB_RETURN | BIO_CB_GETS:
117        BIO_snprintf(p, p_maxlen, "gets return %ld\n", ret);
118        break;
119    case BIO_CB_RETURN | BIO_CB_PUTS:
120        BIO_snprintf(p, p_maxlen, "puts return %ld\n", ret);
121        break;
122    case BIO_CB_RETURN | BIO_CB_CTRL:
123        BIO_snprintf(p, p_maxlen, "ctrl return %ld\n", ret);
124        break;
125    default:
126        BIO_snprintf(p, p_maxlen, "bio callback - unknown type (%d)\n", cmd);
127        break;
128    }
129
130    b = (BIO *)bio->cb_arg;
131    if (b != NULL)
132        BIO_write(b, buf, strlen(buf));
133#if !defined(OPENSSL_NO_STDIO) && !defined(OPENSSL_SYS_WIN16)
134    else
135        fputs(buf, stderr);
136#endif
137    return (r);
138}
139