b_dump.c revision 296465 
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        if (indent > 128)
97            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        buf[0] = '\0';          /* start with empty string */
108        BUF_strlcpy(buf, str, sizeof buf);
109        BIO_snprintf(tmp, sizeof tmp, "%04x - ", i * dump_width);
110        BUF_strlcat(buf, tmp, sizeof buf);
111        for (j = 0; j < dump_width; j++) {
112            if (((i * dump_width) + j) >= len) {
113                BUF_strlcat(buf, "   ", sizeof buf);
114            } else {
115                ch = ((unsigned char)*(s + i * dump_width + j)) & 0xff;
116                BIO_snprintf(tmp, sizeof tmp, "%02x%c", ch,
117                             j == 7 ? '-' : ' ');
118                BUF_strlcat(buf, tmp, sizeof buf);
119            }
120        }
121        BUF_strlcat(buf, "  ", sizeof buf);
122        for (j = 0; j < dump_width; j++) {
123            if (((i * dump_width) + j) >= len)
124                break;
125            ch = ((unsigned char)*(s + i * dump_width + j)) & 0xff;
126#ifndef CHARSET_EBCDIC
127            BIO_snprintf(tmp, sizeof tmp, "%c",
128                         ((ch >= ' ') && (ch <= '~')) ? ch : '.');
129#else
130            BIO_snprintf(tmp, sizeof tmp, "%c",
131                         ((ch >= os_toascii[' ']) && (ch <= os_toascii['~']))
132                         ? os_toebcdic[ch]
133                         : '.');
134#endif
135            BUF_strlcat(buf, tmp, sizeof buf);
136        }
137        BUF_strlcat(buf, "\n", sizeof buf);
138        /*
139         * if this is the last call then update the ddt_dump thing so that we
140         * will move the selection point in the debug window
141         */
142        ret += cb((void *)buf, strlen(buf), u);
143    }
144#ifdef TRUNCATE
145    if (trc > 0) {
146        BIO_snprintf(buf, sizeof buf, "%s%04x - <SPACES/NULS>\n", str,
147                     len + trc);
148        ret += cb((void *)buf, strlen(buf), u);
149    }
150#endif
151    return (ret);
152}
153
154#ifndef OPENSSL_NO_FP_API
155static int write_fp(const void *data, size_t len, void *fp)
156{
157    return UP_fwrite(data, len, 1, fp);
158}
159
160int BIO_dump_fp(FILE *fp, const char *s, int len)
161{
162    return BIO_dump_cb(write_fp, fp, s, len);
163}
164
165int BIO_dump_indent_fp(FILE *fp, const char *s, int len, int indent)
166{
167    return BIO_dump_indent_cb(write_fp, fp, s, len, indent);
168}
169#endif
170
171static int write_bio(const void *data, size_t len, void *bp)
172{
173    return BIO_write((BIO *)bp, (const char *)data, len);
174}
175
176int BIO_dump(BIO *bp, const char *s, int len)
177{
178    return BIO_dump_cb(write_bio, bp, s, len);
179}
180
181int BIO_dump_indent(BIO *bp, const char *s, int len, int indent)
182{
183    return BIO_dump_indent_cb(write_bio, bp, s, len, indent);
184}
185