aboutsummaryrefslogtreecommitdiffstats
path: root/crypto/bio/bio_cb.c
blob: f96294bb430475186b089efc48b1280a54db335d (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
/* crypto/bio/bio_cb.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 *
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 *
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 *
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "cryptlib.h"
#include <openssl/bio.h>
#include <openssl/err.h>

long MS_CALLBACK BIO_debug_callback(BIO *bio, int cmd, const char *argp,
                                    int argi, long argl, long ret)
{
    BIO *b;
    MS_STATIC char buf[256];
    char *p;
    long r = 1;
    int len;
    size_t p_maxlen;

    if (BIO_CB_RETURN & cmd)
        r = ret;

    len = BIO_snprintf(buf,sizeof buf,"BIO[%p]: ",(void *)bio);

    /* Ignore errors and continue printing the other information. */
    if (len < 0)
        len = 0;
    p = buf + len;
    p_maxlen = sizeof(buf) - len;

    switch (cmd) {
    case BIO_CB_FREE:
        BIO_snprintf(p, p_maxlen, "Free - %s\n", bio->method->name);
        break;
    case BIO_CB_READ:
        if (bio->method->type & BIO_TYPE_DESCRIPTOR)
            BIO_snprintf(p, p_maxlen, "read(%d,%lu) - %s fd=%d\n",
                         bio->num, (unsigned long)argi,
                         bio->method->name, bio->num);
        else
            BIO_snprintf(p, p_maxlen, "read(%d,%lu) - %s\n",
                         bio->num, (unsigned long)argi, bio->method->name);
        break;
    case BIO_CB_WRITE:
        if (bio->method->type & BIO_TYPE_DESCRIPTOR)
            BIO_snprintf(p, p_maxlen, "write(%d,%lu) - %s fd=%d\n",
                         bio->num, (unsigned long)argi,
                         bio->method->name, bio->num);
        else
            BIO_snprintf(p, p_maxlen, "write(%d,%lu) - %s\n",
                         bio->num, (unsigned long)argi, bio->method->name);
        break;
    case BIO_CB_PUTS:
        BIO_snprintf(p, p_maxlen, "puts() - %s\n", bio->method->name);
        break;
    case BIO_CB_GETS:
        BIO_snprintf(p, p_maxlen, "gets(%lu) - %s\n", (unsigned long)argi,
                     bio->method->name);
        break;
    case BIO_CB_CTRL:
        BIO_snprintf(p, p_maxlen, "ctrl(%lu) - %s\n", (unsigned long)argi,
                     bio->method->name);
        break;
    case BIO_CB_RETURN | BIO_CB_READ:
        BIO_snprintf(p, p_maxlen, "read return %ld\n", ret);
        break;
    case BIO_CB_RETURN | BIO_CB_WRITE:
        BIO_snprintf(p, p_maxlen, "write return %ld\n", ret);
        break;
    case BIO_CB_RETURN | BIO_CB_GETS:
        BIO_snprintf(p, p_maxlen, "gets return %ld\n", ret);
        break;
    case BIO_CB_RETURN | BIO_CB_PUTS:
        BIO_snprintf(p, p_maxlen, "puts return %ld\n", ret);
        break;
    case BIO_CB_RETURN | BIO_CB_CTRL:
        BIO_snprintf(p, p_maxlen, "ctrl return %ld\n", ret);
        break;
    default:
        BIO_snprintf(p, p_maxlen, "bio callback - unknown type (%d)\n", cmd);
        break;
    }

    b = (BIO *)bio->cb_arg;
    if (b != NULL)
        BIO_write(b, buf, strlen(buf));
#if !defined(OPENSSL_NO_STDIO) && !defined(OPENSSL_SYS_WIN16)
    else
        fputs(buf, stderr);
#endif
    return (r);
}