b_dump.c revision 331638 
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 DUMP_WIDTH      16
68#define DUMP_WIDTH_LESS_INDENT(i) (DUMP_WIDTH-((i-(i>6?6:i)+3)/4))
69
70int BIO_dump_cb(int (*cb) (const void *data, size_t len, void *u),
71                void *u, const char *s, int len)
72{
73    return BIO_dump_indent_cb(cb, u, s, len, 0);
74}
75
76int BIO_dump_indent_cb(int (*cb) (const void *data, size_t len, void *u),
77                       void *u, const char *s, int len, int indent)
78{
79    int ret = 0;
80    char buf[288 + 1], tmp[20], str[128 + 1];
81    int i, j, rows;
82    unsigned char ch;
83    int dump_width;
84
85    if (indent < 0)
86        indent = 0;
87    if (indent) {
88        if (indent > 128)
89            indent = 128;
90        memset(str, ' ', indent);
91    }
92    str[indent] = '\0';
93
94    dump_width = DUMP_WIDTH_LESS_INDENT(indent);
95    rows = (len / dump_width);
96    if ((rows * dump_width) < len)
97        rows++;
98    for (i = 0; i < rows; i++) {
99        BUF_strlcpy(buf, str, sizeof(buf));
100        BIO_snprintf(tmp, sizeof(tmp), "%04x - ", i * dump_width);
101        BUF_strlcat(buf, tmp, sizeof(buf));
102        for (j = 0; j < dump_width; j++) {
103            if (((i * dump_width) + j) >= len) {
104                BUF_strlcat(buf, "   ", sizeof(buf));
105            } else {
106                ch = ((unsigned char)*(s + i * dump_width + j)) & 0xff;
107                BIO_snprintf(tmp, sizeof(tmp), "%02x%c", ch,
108                             j == 7 ? '-' : ' ');
109                BUF_strlcat(buf, tmp, sizeof(buf));
110            }
111        }
112        BUF_strlcat(buf, "  ", sizeof(buf));
113        for (j = 0; j < dump_width; j++) {
114            if (((i * dump_width) + j) >= len)
115                break;
116            ch = ((unsigned char)*(s + i * dump_width + j)) & 0xff;
117#ifndef CHARSET_EBCDIC
118            BIO_snprintf(tmp, sizeof(tmp), "%c",
119                         ((ch >= ' ') && (ch <= '~')) ? ch : '.');
120#else
121            BIO_snprintf(tmp, sizeof(tmp), "%c",
122                         ((ch >= os_toascii[' ']) && (ch <= os_toascii['~']))
123                         ? os_toebcdic[ch]
124                         : '.');
125#endif
126            BUF_strlcat(buf, tmp, sizeof(buf));
127        }
128        BUF_strlcat(buf, "\n", sizeof(buf));
129        /*
130         * if this is the last call then update the ddt_dump thing so that we
131         * will move the selection point in the debug window
132         */
133        ret += cb((void *)buf, strlen(buf), u);
134    }
135    return ret;
136}
137
138#ifndef OPENSSL_NO_FP_API
139static int write_fp(const void *data, size_t len, void *fp)
140{
141    return UP_fwrite(data, len, 1, fp);
142}
143
144int BIO_dump_fp(FILE *fp, const char *s, int len)
145{
146    return BIO_dump_cb(write_fp, fp, s, len);
147}
148
149int BIO_dump_indent_fp(FILE *fp, const char *s, int len, int indent)
150{
151    return BIO_dump_indent_cb(write_fp, fp, s, len, indent);
152}
153#endif
154
155static int write_bio(const void *data, size_t len, void *bp)
156{
157    return BIO_write((BIO *)bp, (const char *)data, len);
158}
159
160int BIO_dump(BIO *bp, const char *s, int len)
161{
162    return BIO_dump_cb(write_bio, bp, s, len);
163}
164
165int BIO_dump_indent(BIO *bp, const char *s, int len, int indent)
166{
167    return BIO_dump_indent_cb(write_bio, bp, s, len, indent);
168}
169
170int BIO_hex_string(BIO *out, int indent, int width, unsigned char *data,
171                   int datalen)
172{
173    int i, j = 0;
174
175    if (datalen < 1)
176        return 1;
177
178    for (i = 0; i < datalen - 1; i++) {
179        if (i && !j)
180            BIO_printf(out, "%*s", indent, "");
181
182        BIO_printf(out, "%02X:", data[i]);
183
184        j = (j + 1) % width;
185        if (!j)
186            BIO_printf(out, "\n");
187    }
188
189    if (i && !j)
190        BIO_printf(out, "%*s", indent, "");
191    BIO_printf(out, "%02X", data[datalen - 1]);
192    return 1;
193}
194