1 /* $OpenBSD: b_dump.c,v 1.22 2021/07/11 20:18:07 beck Exp $ */ 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 <string.h> 65 66 #include <openssl/bio.h> 67 68 #define TRUNCATE 69 #define DUMP_WIDTH 16 70 #define DUMP_WIDTH_LESS_INDENT(i) (DUMP_WIDTH - ((i - (i > 6 ? 6 : i) + 3) / 4)) 71 72 int 73 BIO_dump_cb(int (*cb)(const void *data, size_t len, void *u), 74 void *u, const char *s, int len) 75 { 76 return BIO_dump_indent_cb(cb, u, s, len, 0); 77 } 78 79 int 80 BIO_dump_indent_cb(int (*cb)(const void *data, size_t len, void *u), 81 void *u, const char *s, int len, int indent) 82 { 83 int ret = 0; 84 char buf[288 + 1], tmp[20], str[128 + 1]; 85 int i, j, rows, trc, written; 86 unsigned char ch; 87 int dump_width; 88 89 trc = 0; 90 91 #ifdef TRUNCATE 92 for (; (len > 0) && ((s[len - 1] == ' ') || (s[len - 1] == '\0')); len--) 93 trc++; 94 #endif 95 96 if (indent < 0) 97 indent = 0; 98 if (indent) { 99 if (indent > 128) 100 indent = 128; 101 memset(str, ' ', indent); 102 } 103 str[indent] = '\0'; 104 105 dump_width = DUMP_WIDTH_LESS_INDENT(indent); 106 rows = (len / dump_width); 107 if ((rows * dump_width) < len) 108 rows++; 109 for (i = 0; i < rows; i++) { 110 strlcpy(buf, str, sizeof buf); 111 snprintf(tmp, sizeof tmp, "%04x - ", i*dump_width); 112 strlcat(buf, tmp, sizeof buf); 113 for (j = 0; j < dump_width; j++) { 114 if (((i*dump_width) + j) >= len) { 115 strlcat(buf, " ", sizeof buf); 116 } else { 117 ch = ((unsigned char)*(s + i*dump_width + j)) & 0xff; 118 snprintf(tmp, sizeof tmp, "%02x%c", ch, 119 j == 7 ? '-' : ' '); 120 strlcat(buf, tmp, sizeof buf); 121 } 122 } 123 strlcat(buf, " ", sizeof buf); 124 for (j = 0; j < dump_width; j++) { 125 if (((i*dump_width) + j) >= len) 126 break; 127 ch = ((unsigned char)*(s + i * dump_width + j)) & 0xff; 128 snprintf(tmp, sizeof tmp, "%c", 129 ((ch >= ' ') && (ch <= '~')) ? ch : '.'); 130 strlcat(buf, tmp, sizeof buf); 131 } 132 strlcat(buf, "\n", sizeof buf); 133 /* if this is the last call then update the ddt_dump thing so 134 * that we will move the selection point in the debug window 135 */ 136 if ((written = cb((void *)buf, strlen(buf), u)) < 0) 137 return -1; 138 ret += written; 139 140 } 141 #ifdef TRUNCATE 142 if (trc > 0) { 143 snprintf(buf, sizeof buf, "%s%04x - <SPACES/NULS>\n", 144 str, len + trc); 145 if ((written = cb((void *)buf, strlen(buf), u)) < 0) 146 return -1; 147 ret += written; 148 } 149 #endif 150 return (ret); 151 } 152 153 static int 154 write_fp(const void *data, size_t len, void *fp) 155 { 156 return fwrite(data, 1, len, fp); 157 } 158 159 int 160 BIO_dump_fp(FILE *fp, const char *s, int len) 161 { 162 return BIO_dump_cb(write_fp, fp, s, len); 163 } 164 165 int 166 BIO_dump_indent_fp(FILE *fp, const char *s, int len, int indent) 167 { 168 return BIO_dump_indent_cb(write_fp, fp, s, len, indent); 169 } 170 171 static int 172 write_bio(const void *data, size_t len, void *bp) 173 { 174 return BIO_write((BIO *)bp, (const char *)data, len); 175 } 176 177 int 178 BIO_dump(BIO *bp, const char *s, int len) 179 { 180 return BIO_dump_cb(write_bio, bp, s, len); 181 } 182 183 int 184 BIO_dump_indent(BIO *bp, const char *s, int len, int indent) 185 { 186 return BIO_dump_indent_cb(write_bio, bp, s, len, indent); 187 } 188