b_dump.c revision 160814 
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 "bio_lcl.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_cb(int (*cb)(const void *data, size_t len, void *u),
72	void *u, const char *s, int len)
73	{
74	return BIO_dump_indent_cb(cb, u, s, len, 0);
75	}
76
77int BIO_dump_indent_cb(int (*cb)(const void *data, size_t len, void *u),
78	void *u, const char *s, int len, int indent)
79	{
80	int ret=0;
81	char buf[288+1],tmp[20],str[128+1];
82	int i,j,rows,trc;
83	unsigned char ch;
84	int dump_width;
85
86	trc=0;
87
88#ifdef TRUNCATE
89	for(; (len > 0) && ((s[len-1] == ' ') || (s[len-1] == '\0')); len--)
90		trc++;
91#endif
92
93	if (indent < 0)
94		indent = 0;
95	if (indent)
96		{
97		if (indent > 128) indent=128;
98		memset(str,' ',indent);
99		}
100	str[indent]='\0';
101
102	dump_width=DUMP_WIDTH_LESS_INDENT(indent);
103	rows=(len/dump_width);
104	if ((rows*dump_width)<len)
105		rows++;
106	for(i=0;i<rows;i++)
107		{
108		buf[0]='\0';	/* start with empty string */
109		BUF_strlcpy(buf,str,sizeof buf);
110		BIO_snprintf(tmp,sizeof tmp,"%04x - ",i*dump_width);
111		BUF_strlcat(buf,tmp,sizeof buf);
112		for(j=0;j<dump_width;j++)
113			{
114			if (((i*dump_width)+j)>=len)
115				{
116				BUF_strlcat(buf,"   ",sizeof buf);
117				}
118			else
119				{
120				ch=((unsigned char)*(s+i*dump_width+j)) & 0xff;
121				BIO_snprintf(tmp,sizeof tmp,"%02x%c",ch,
122					j==7?'-':' ');
123				BUF_strlcat(buf,tmp,sizeof buf);
124				}
125			}
126		BUF_strlcat(buf,"  ",sizeof buf);
127		for(j=0;j<dump_width;j++)
128			{
129			if (((i*dump_width)+j)>=len)
130				break;
131			ch=((unsigned char)*(s+i*dump_width+j)) & 0xff;
132#ifndef CHARSET_EBCDIC
133			BIO_snprintf(tmp,sizeof tmp,"%c",
134				((ch>=' ')&&(ch<='~'))?ch:'.');
135#else
136			BIO_snprintf(tmp,sizeof tmp,"%c",
137				((ch>=os_toascii[' '])&&(ch<=os_toascii['~']))
138				? os_toebcdic[ch]
139				: '.');
140#endif
141			BUF_strlcat(buf,tmp,sizeof buf);
142			}
143		BUF_strlcat(buf,"\n",sizeof buf);
144		/* if this is the last call then update the ddt_dump thing so
145		 * that we will move the selection point in the debug window
146		 */
147		ret+=cb((void *)buf,strlen(buf),u);
148		}
149#ifdef TRUNCATE
150	if (trc > 0)
151		{
152		BIO_snprintf(buf,sizeof buf,"%s%04x - <SPACES/NULS>\n",str,
153			len+trc);
154		ret+=cb((void *)buf,strlen(buf),u);
155		}
156#endif
157	return(ret);
158	}
159
160#ifndef OPENSSL_NO_FP_API
161static int write_fp(const void *data, size_t len, void *fp)
162	{
163	return UP_fwrite(data, len, 1, fp);
164	}
165int BIO_dump_fp(FILE *fp, const char *s, int len)
166	{
167	return BIO_dump_cb(write_fp, fp, s, len);
168	}
169int BIO_dump_indent_fp(FILE *fp, const char *s, int len, int indent)
170	{
171	return BIO_dump_indent_cb(write_fp, fp, s, len, indent);
172	}
173#endif
174
175static int write_bio(const void *data, size_t len, void *bp)
176	{
177	return BIO_write((BIO *)bp, (const char *)data, len);
178	}
179int BIO_dump(BIO *bp, const char *s, int len)
180	{
181	return BIO_dump_cb(write_bio, bp, s, len);
182	}
183int BIO_dump_indent(BIO *bp, const char *s, int len, int indent)
184	{
185	return BIO_dump_indent_cb(write_bio, bp, s, len, indent);
186	}
187
188