1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #ifndef lint 33 static const char sccsid[] = "@(#)conv.c 8.1 (Berkeley) 6/6/93"; 34 #endif /* not lint */ 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #include <sys/types.h> 39 40 #include <assert.h> 41 #include <ctype.h> 42 #include <limits.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include <wchar.h> 47 #include <wctype.h> 48 #include "hexdump.h" 49 50 void 51 conv_c(PR *pr, u_char *p, size_t bufsize) 52 { 53 char buf[10]; 54 char const *str; 55 wchar_t wc; 56 size_t clen, oclen; 57 int converr, pad, width; 58 u_char peekbuf[MB_LEN_MAX]; 59 60 if (pr->mbleft > 0) { 61 str = "**"; 62 pr->mbleft--; 63 goto strpr; 64 } 65 66 switch(*p) { 67 case '\0': 68 str = "\\0"; 69 goto strpr; 70 /* case '\a': */ 71 case '\007': 72 str = "\\a"; 73 goto strpr; 74 case '\b': 75 str = "\\b"; 76 goto strpr; 77 case '\f': 78 str = "\\f"; 79 goto strpr; 80 case '\n': 81 str = "\\n"; 82 goto strpr; 83 case '\r': 84 str = "\\r"; 85 goto strpr; 86 case '\t': 87 str = "\\t"; 88 goto strpr; 89 case '\v': 90 str = "\\v"; 91 goto strpr; 92 default: 93 break; 94 } 95 /* 96 * Multibyte characters are disabled for hexdump(1) for backwards 97 * compatibility and consistency (none of its other output formats 98 * recognize them correctly). 99 */ 100 converr = 0; 101 if (odmode && MB_CUR_MAX > 1) { 102 oclen = 0; 103 retry: 104 clen = mbrtowc(&wc, p, bufsize, &pr->mbstate); 105 if (clen == 0) 106 clen = 1; 107 else if (clen == (size_t)-1 || (clen == (size_t)-2 && 108 p == peekbuf)) { 109 memset(&pr->mbstate, 0, sizeof(pr->mbstate)); 110 wc = *p; 111 clen = 1; 112 converr = 1; 113 } else if (clen == (size_t)-2) { 114 /* 115 * Incomplete character; peek ahead and see if we 116 * can complete it. 117 */ 118 oclen = bufsize; 119 bufsize = peek(p = peekbuf, MB_CUR_MAX); 120 goto retry; 121 } 122 clen += oclen; 123 } else { 124 wc = *p; 125 clen = 1; 126 } 127 if (!converr && iswprint(wc)) { 128 if (!odmode) { 129 *pr->cchar = 'c'; 130 (void)printf(pr->fmt, (int)wc); 131 } else { 132 *pr->cchar = 'C'; 133 assert(strcmp(pr->fmt, "%3C") == 0); 134 width = wcwidth(wc); 135 assert(width >= 0); 136 pad = 3 - width; 137 if (pad < 0) 138 pad = 0; 139 (void)printf("%*s%C", pad, "", wc); 140 pr->mbleft = clen - 1; 141 } 142 } else { 143 (void)sprintf(buf, "%03o", (int)*p); 144 str = buf; 145 strpr: *pr->cchar = 's'; 146 (void)printf(pr->fmt, str); 147 } 148 } 149 150 void 151 conv_u(PR *pr, u_char *p) 152 { 153 static char const * list[] = { 154 "nul", "soh", "stx", "etx", "eot", "enq", "ack", "bel", 155 "bs", "ht", "lf", "vt", "ff", "cr", "so", "si", 156 "dle", "dc1", "dc2", "dc3", "dc4", "nak", "syn", "etb", 157 "can", "em", "sub", "esc", "fs", "gs", "rs", "us", 158 }; 159 160 /* od used nl, not lf */ 161 if (*p <= 0x1f) { 162 *pr->cchar = 's'; 163 if (odmode && *p == 0x0a) 164 (void)printf(pr->fmt, "nl"); 165 else 166 (void)printf(pr->fmt, list[*p]); 167 } else if (*p == 0x7f) { 168 *pr->cchar = 's'; 169 (void)printf(pr->fmt, "del"); 170 } else if (odmode && *p == 0x20) { /* od replaced space with sp */ 171 *pr->cchar = 's'; 172 (void)printf(pr->fmt, " sp"); 173 } else if (isprint(*p)) { 174 *pr->cchar = 'c'; 175 (void)printf(pr->fmt, *p); 176 } else { 177 *pr->cchar = 'x'; 178 (void)printf(pr->fmt, (int)*p); 179 } 180 } 181