b_dump.c revision 127128 
1/* crypto/bio/b_dump.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/*
60 * Stolen from tjh's ssl/ssl_trc.c stuff.
61 */
62
63#include <stdio.h>
64#include "cryptlib.h"
65#include <openssl/bio.h>
66
67#define TRUNCATE
68#define DUMP_WIDTH	16
69#define DUMP_WIDTH_LESS_INDENT(i) (DUMP_WIDTH-((i-(i>6?6:i)+3)/4))
70
71int BIO_dump(BIO *bio, const char *s, int len)
72	{
73	return BIO_dump_indent(bio, s, len, 0);
74	}
75
76int BIO_dump_indent(BIO *bio, const char *s, int len, int indent)
77	{
78	int ret=0;
79	char buf[288+1],tmp[20],str[128+1];
80	int i,j,rows,trunc;
81	unsigned char ch;
82	int dump_width;
83
84	trunc=0;
85
86#ifdef TRUNCATE
87	for(; (len > 0) && ((s[len-1] == ' ') || (s[len-1] == '\0')); len--)
88		trunc++;
89#endif
90
91	if (indent < 0)
92		indent = 0;
93	if (indent)
94		{
95		if (indent > 128) indent=128;
96		memset(str,' ',indent);
97		}
98	str[indent]='\0';
99
100	dump_width=DUMP_WIDTH_LESS_INDENT(indent);
101	rows=(len/dump_width);
102	if ((rows*dump_width)<len)
103		rows++;
104	for(i=0;i<rows;i++)
105		{
106		buf[0]='\0';	/* start with empty string */
107		BUF_strlcpy(buf,str,sizeof buf);
108		BIO_snprintf(tmp,sizeof tmp,"%04x - ",i*dump_width);
109		BUF_strlcat(buf,tmp,sizeof buf);
110		for(j=0;j<dump_width;j++)
111			{
112			if (((i*dump_width)+j)>=len)
113				{
114				BUF_strlcat(buf,"   ",sizeof buf);
115				}
116			else
117				{
118				ch=((unsigned char)*(s+i*dump_width+j)) & 0xff;
119				BIO_snprintf(tmp,sizeof tmp,"%02x%c",ch,
120					 j==7?'-':' ');
121				BUF_strlcat(buf,tmp,sizeof buf);
122				}
123			}
124		BUF_strlcat(buf,"  ",sizeof buf);
125		for(j=0;j<dump_width;j++)
126			{
127			if (((i*dump_width)+j)>=len)
128				break;
129			ch=((unsigned char)*(s+i*dump_width+j)) & 0xff;
130#ifndef CHARSET_EBCDIC
131			BIO_snprintf(tmp,sizeof tmp,"%c",
132				 ((ch>=' ')&&(ch<='~'))?ch:'.');
133#else
134			BIO_snprintf(tmp,sizeof tmp,"%c",
135				 ((ch>=os_toascii[' '])&&(ch<=os_toascii['~']))
136				 ? os_toebcdic[ch]
137				 : '.');
138#endif
139			BUF_strlcat(buf,tmp,sizeof buf);
140			}
141		BUF_strlcat(buf,"\n",sizeof buf);
142		/* if this is the last call then update the ddt_dump thing so that
143		 * we will move the selection point in the debug window
144		 */
145		ret+=BIO_write(bio,(char *)buf,strlen(buf));
146		}
147#ifdef TRUNCATE
148	if (trunc > 0)
149		{
150		BIO_snprintf(buf,sizeof buf,"%s%04x - <SPACES/NULS>\n",str,
151			 len+trunc);
152		ret+=BIO_write(bio,(char *)buf,strlen(buf));
153		}
154#endif
155	return(ret);
156	}
157