bio_cb.c revision 1.12 
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
67BIO_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[%08lX]:", (unsigned long)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#if !defined(OPENSSL_NO_STDIO)
143	else
144		fputs(buf, stderr);
145#endif
146	return (r);
147}
148