[e4a3d93] | 1 | /* |
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| 2 | * Copyright (c) 1989, 1993 |
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| 3 | * The Regents of the University of California. All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * 1. Redistributions of source code must retain the above copyright |
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| 9 | * notice, this list of conditions and the following disclaimer. |
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| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 11 | * notice, this list of conditions and the following disclaimer in the |
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| 12 | * documentation and/or other materials provided with the distribution. |
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| 13 | * 3. All advertising materials mentioning features or use of this software |
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| 14 | * must display the following acknowledgement: |
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| 15 | * This product includes software developed by the University of |
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| 16 | * California, Berkeley and its contributors. |
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| 17 | * 4. Neither the name of the University nor the names of its contributors |
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| 18 | * may be used to endorse or promote products derived from this software |
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| 19 | * without specific prior written permission. |
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| 20 | * |
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 31 | * SUCH DAMAGE. |
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| 32 | */ |
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| 33 | |
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[9a77af8] | 34 | #ifdef HAVE_CONFIG_H |
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| 35 | #include "config.h" |
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| 36 | #endif |
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| 37 | |
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[e4a3d93] | 38 | #ifndef lint |
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| 39 | #if 0 |
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| 40 | static char sccsid[] = "@(#)display.c 8.1 (Berkeley) 6/6/93"; |
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| 41 | #endif |
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| 42 | #endif /* not lint */ |
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| 43 | #if 0 |
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| 44 | #include <sys/cdefs.h> |
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| 45 | __FBSDID("$FreeBSD: src/usr.bin/hexdump/display.c,v 1.22 2004/08/04 02:47:32 tjr Exp $"); |
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| 46 | #endif |
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| 47 | |
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| 48 | #include <sys/param.h> |
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| 49 | #include <sys/stat.h> |
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| 50 | |
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| 51 | #include <stdint.h> |
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| 52 | |
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| 53 | #include <ctype.h> |
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[6cdaa85] | 54 | #include "err.h" |
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[e4a3d93] | 55 | #include <errno.h> |
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| 56 | #include <stdio.h> |
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| 57 | #include <stdlib.h> |
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| 58 | #include <string.h> |
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| 59 | #include <unistd.h> |
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| 60 | #include "hexdump.h" |
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| 61 | |
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[5b1f1979] | 62 | #define bcmp(s1,s2,sz) memcmp(s1,s2,sz) |
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| 63 | #define bcopy(s,d,sz) memcpy(d,s,sz) |
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| 64 | #define bzero(s,sz) memset(s,0,sz) |
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| 65 | #define index(s,c) strchr(s,c) |
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| 66 | |
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[e4a3d93] | 67 | #if RTEMS_REMOVED |
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| 68 | enum _vflag vflag = FIRST; |
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| 69 | |
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| 70 | static off_t address; /* address/offset in stream */ |
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| 71 | static off_t eaddress; /* end address */ |
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| 72 | #endif |
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| 73 | |
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| 74 | static void print(rtems_shell_hexdump_globals*, PR *, u_char *); |
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| 75 | |
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| 76 | void |
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| 77 | display(rtems_shell_hexdump_globals* globals) |
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| 78 | { |
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| 79 | FS *fs; |
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| 80 | FU *fu; |
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| 81 | PR *pr; |
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| 82 | int cnt; |
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| 83 | u_char *bp; |
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| 84 | off_t saveaddress; |
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| 85 | u_char savech, *savebp; |
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| 86 | |
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| 87 | savech = 0; |
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| 88 | while ((bp = get(globals))) |
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| 89 | for (fs = fshead, savebp = bp, saveaddress = address; fs; |
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| 90 | fs = fs->nextfs, bp = savebp, address = saveaddress) |
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| 91 | for (fu = fs->nextfu; fu; fu = fu->nextfu) { |
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| 92 | if (fu->flags&F_IGNORE) |
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| 93 | break; |
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| 94 | for (cnt = fu->reps; cnt; --cnt) |
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| 95 | for (pr = fu->nextpr; pr; address += pr->bcnt, |
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| 96 | bp += pr->bcnt, pr = pr->nextpr) { |
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| 97 | if (eaddress && address >= eaddress && |
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| 98 | !(pr->flags & (F_TEXT|F_BPAD))) |
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| 99 | bpad(pr); |
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| 100 | if (cnt == 1 && pr->nospace) { |
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| 101 | savech = *pr->nospace; |
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| 102 | *pr->nospace = '\0'; |
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| 103 | } |
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| 104 | print(globals, pr, bp); |
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| 105 | if (cnt == 1 && pr->nospace) |
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| 106 | *pr->nospace = savech; |
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| 107 | } |
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| 108 | } |
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| 109 | if (endfu) { |
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| 110 | /* |
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| 111 | * If eaddress not set, error or file size was multiple of |
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| 112 | * blocksize, and no partial block ever found. |
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| 113 | */ |
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| 114 | if (!eaddress) { |
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| 115 | if (!address) |
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| 116 | return; |
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| 117 | eaddress = address; |
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| 118 | } |
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| 119 | for (pr = endfu->nextpr; pr; pr = pr->nextpr) |
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| 120 | switch(pr->flags) { |
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| 121 | case F_ADDRESS: |
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| 122 | (void)printf(pr->fmt, (quad_t)eaddress); |
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| 123 | break; |
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| 124 | case F_TEXT: |
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| 125 | (void)printf("%s", pr->fmt); |
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| 126 | break; |
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| 127 | } |
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| 128 | } |
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| 129 | } |
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| 130 | |
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| 131 | static void |
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| 132 | print(rtems_shell_hexdump_globals* globals, PR *pr, u_char *bp) |
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| 133 | { |
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| 134 | long double ldbl; |
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| 135 | double f8; |
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| 136 | float f4; |
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| 137 | int16_t s2; |
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| 138 | int8_t s8; |
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| 139 | int32_t s4; |
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| 140 | u_int16_t u2; |
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| 141 | u_int32_t u4; |
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| 142 | u_int64_t u8; |
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| 143 | |
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| 144 | switch(pr->flags) { |
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| 145 | case F_ADDRESS: |
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| 146 | (void)printf(pr->fmt, (quad_t)address); |
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| 147 | break; |
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| 148 | case F_BPAD: |
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| 149 | (void)printf(pr->fmt, ""); |
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| 150 | break; |
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| 151 | case F_C: |
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| 152 | conv_c(globals, pr, bp, eaddress ? eaddress - address : |
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| 153 | blocksize - address % blocksize); |
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| 154 | break; |
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| 155 | case F_CHAR: |
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| 156 | (void)printf(pr->fmt, *bp); |
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| 157 | break; |
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| 158 | case F_DBL: |
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| 159 | switch(pr->bcnt) { |
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| 160 | case 4: |
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| 161 | bcopy(bp, &f4, sizeof(f4)); |
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| 162 | (void)printf(pr->fmt, f4); |
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| 163 | break; |
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| 164 | case 8: |
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| 165 | bcopy(bp, &f8, sizeof(f8)); |
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| 166 | (void)printf(pr->fmt, f8); |
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| 167 | break; |
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| 168 | default: |
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| 169 | if (pr->bcnt == sizeof(long double)) { |
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| 170 | bcopy(bp, &ldbl, sizeof(ldbl)); |
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| 171 | (void)printf(pr->fmt, ldbl); |
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| 172 | } |
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| 173 | break; |
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| 174 | } |
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| 175 | break; |
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| 176 | case F_INT: |
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| 177 | switch(pr->bcnt) { |
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| 178 | case 1: |
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| 179 | (void)printf(pr->fmt, (quad_t)(signed char)*bp); |
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| 180 | break; |
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| 181 | case 2: |
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| 182 | bcopy(bp, &s2, sizeof(s2)); |
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| 183 | (void)printf(pr->fmt, (quad_t)s2); |
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| 184 | break; |
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| 185 | case 4: |
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| 186 | bcopy(bp, &s4, sizeof(s4)); |
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| 187 | (void)printf(pr->fmt, (quad_t)s4); |
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| 188 | break; |
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| 189 | case 8: |
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| 190 | bcopy(bp, &s8, sizeof(s8)); |
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| 191 | (void)printf(pr->fmt, s8); |
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| 192 | break; |
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| 193 | } |
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| 194 | break; |
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| 195 | case F_P: |
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| 196 | (void)printf(pr->fmt, isprint(*bp) ? *bp : '.'); |
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| 197 | break; |
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| 198 | case F_STR: |
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| 199 | (void)printf(pr->fmt, (char *)bp); |
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| 200 | break; |
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| 201 | case F_TEXT: |
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| 202 | (void)printf("%s", pr->fmt); |
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| 203 | break; |
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| 204 | case F_U: |
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| 205 | conv_u(globals, pr, bp); |
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| 206 | break; |
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| 207 | case F_UINT: |
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| 208 | switch(pr->bcnt) { |
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| 209 | case 1: |
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| 210 | (void)printf(pr->fmt, (u_quad_t)*bp); |
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| 211 | break; |
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| 212 | case 2: |
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| 213 | bcopy(bp, &u2, sizeof(u2)); |
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| 214 | (void)printf(pr->fmt, (u_quad_t)u2); |
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| 215 | break; |
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| 216 | case 4: |
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| 217 | bcopy(bp, &u4, sizeof(u4)); |
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| 218 | (void)printf(pr->fmt, (u_quad_t)u4); |
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| 219 | break; |
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| 220 | case 8: |
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| 221 | bcopy(bp, &u8, sizeof(u8)); |
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| 222 | (void)printf(pr->fmt, u8); |
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| 223 | break; |
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| 224 | } |
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| 225 | break; |
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| 226 | } |
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| 227 | } |
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| 228 | |
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| 229 | void |
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| 230 | bpad(PR *pr) |
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| 231 | { |
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| 232 | static char const *spec = " -0+#"; |
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| 233 | char *p1, *p2; |
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| 234 | |
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| 235 | /* |
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| 236 | * Remove all conversion flags; '-' is the only one valid |
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| 237 | * with %s, and it's not useful here. |
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| 238 | */ |
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| 239 | pr->flags = F_BPAD; |
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| 240 | pr->cchar[0] = 's'; |
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| 241 | pr->cchar[1] = '\0'; |
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| 242 | for (p1 = pr->fmt; *p1 != '%'; ++p1); |
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| 243 | for (p2 = ++p1; *p1 && index(spec, *p1); ++p1); |
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| 244 | while ((*p2++ = *p1++)); |
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| 245 | } |
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| 246 | |
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| 247 | static char **_argv; |
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| 248 | |
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| 249 | u_char * |
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| 250 | get(rtems_shell_hexdump_globals* globals) |
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| 251 | { |
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| 252 | #if RTEMS_REMOVED |
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| 253 | static int ateof = 1; |
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| 254 | static u_char *curp, *savp; |
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| 255 | #endif |
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| 256 | int n; |
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| 257 | int need, nread; |
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| 258 | int valid_save = 0; |
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| 259 | u_char *tmpp; |
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| 260 | |
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| 261 | if (!curp) { |
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| 262 | if ((curp = calloc(1, blocksize)) == NULL) |
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| 263 | err(exit_jump, 1, NULL); |
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| 264 | if ((savp = calloc(1, blocksize)) == NULL) |
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| 265 | err(exit_jump, 1, NULL); |
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| 266 | } else { |
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| 267 | tmpp = curp; |
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| 268 | curp = savp; |
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| 269 | savp = tmpp; |
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| 270 | address += blocksize; |
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| 271 | valid_save = 1; |
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| 272 | } |
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| 273 | for (need = blocksize, nread = 0;;) { |
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| 274 | /* |
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| 275 | * if read the right number of bytes, or at EOF for one file, |
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| 276 | * and no other files are available, zero-pad the rest of the |
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| 277 | * block and set the end flag. |
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| 278 | */ |
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| 279 | if (!length || (ateof && !next(globals, (char **)NULL))) { |
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| 280 | if (odmode && address < skip) |
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| 281 | errx(exit_jump, 1, "cannot skip past end of input"); |
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| 282 | if (need == blocksize) |
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| 283 | return((u_char *)NULL); |
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| 284 | /* |
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| 285 | * XXX bcmp() is not quite right in the presence |
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| 286 | * of multibyte characters. |
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| 287 | */ |
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[0893220] | 288 | if (vflag != ALL && |
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| 289 | valid_save && |
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[e4a3d93] | 290 | bcmp(curp, savp, nread) == 0) { |
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| 291 | if (vflag != DUP) |
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| 292 | (void)printf("*\n"); |
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| 293 | return((u_char *)NULL); |
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| 294 | } |
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| 295 | bzero((char *)curp + nread, need); |
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| 296 | eaddress = address + nread; |
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| 297 | return(curp); |
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| 298 | } |
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| 299 | n = fread((char *)curp + nread, sizeof(u_char), |
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| 300 | length == -1 ? need : MIN(length, need), hdstdin); |
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| 301 | if (!n) { |
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| 302 | if (ferror(hdstdin)) |
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| 303 | warn("%s", _argv[-1]); |
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| 304 | ateof = 1; |
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| 305 | continue; |
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| 306 | } |
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| 307 | ateof = 0; |
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| 308 | if (length != -1) |
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| 309 | length -= n; |
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| 310 | if (!(need -= n)) { |
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| 311 | /* |
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| 312 | * XXX bcmp() is not quite right in the presence |
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| 313 | * of multibyte characters. |
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| 314 | */ |
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| 315 | if (vflag == ALL || vflag == FIRST || |
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| 316 | valid_save == 0 || |
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| 317 | bcmp(curp, savp, blocksize) != 0) { |
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| 318 | if (vflag == DUP || vflag == FIRST) |
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| 319 | vflag = WAIT; |
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| 320 | return(curp); |
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| 321 | } |
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| 322 | if (vflag == WAIT) |
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| 323 | (void)printf("*\n"); |
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| 324 | vflag = DUP; |
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| 325 | address += blocksize; |
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| 326 | need = blocksize; |
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| 327 | nread = 0; |
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| 328 | } |
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| 329 | else |
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| 330 | nread += n; |
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| 331 | } |
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| 332 | } |
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| 333 | |
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| 334 | size_t |
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| 335 | peek(rtems_shell_hexdump_globals* globals, u_char *buf, size_t nbytes) |
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| 336 | { |
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| 337 | size_t n, nread; |
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| 338 | int c; |
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| 339 | |
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| 340 | if (length != -1 && nbytes > (unsigned int)length) |
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| 341 | nbytes = length; |
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| 342 | nread = 0; |
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| 343 | while (nread < nbytes && (c = getchar()) != EOF) { |
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| 344 | *buf++ = c; |
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| 345 | nread++; |
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| 346 | } |
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| 347 | n = nread; |
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| 348 | while (n-- > 0) { |
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| 349 | c = *--buf; |
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| 350 | ungetc(c, hdstdin); |
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| 351 | } |
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| 352 | return (nread); |
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| 353 | } |
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| 354 | |
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| 355 | int |
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| 356 | next(rtems_shell_hexdump_globals* globals, char **argv) |
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| 357 | { |
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| 358 | #if RTEMS_REMOVED |
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| 359 | static int done; |
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| 360 | #endif |
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| 361 | int statok; |
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| 362 | |
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| 363 | if (argv) { |
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| 364 | _argv = argv; |
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| 365 | return(1); |
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| 366 | } |
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| 367 | for (;;) { |
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| 368 | if (*_argv) { |
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| 369 | done = 1; |
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| 370 | if (!hdstdin) { |
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| 371 | hdstdin = malloc(sizeof(FILE)); |
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| 372 | if (!hdstdin) |
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| 373 | { |
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| 374 | errno = ENOMEM; |
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| 375 | err(exit_jump, 1, "file name allocation"); |
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| 376 | } |
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[eb649786] | 377 | memset (hdstdin, 0, sizeof(FILE)); |
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[e4a3d93] | 378 | } |
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[eb649786] | 379 | if (!(hdstdin = freopen(*_argv, "r", hdstdin))) { |
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[e4a3d93] | 380 | warn("%s", *_argv); |
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| 381 | exitval = 1; |
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| 382 | ++_argv; |
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| 383 | continue; |
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| 384 | } |
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| 385 | statok = 1; |
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| 386 | } else { |
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| 387 | errno = ECANCELED; |
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| 388 | err(exit_jump, 1, "no file (stdin no supported)"); |
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| 389 | if (done++) |
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| 390 | return(0); |
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| 391 | statok = 0; |
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| 392 | } |
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| 393 | if (skip) |
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| 394 | doskip(globals, statok ? *_argv : "stdin", statok); |
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| 395 | if (*_argv) |
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| 396 | ++_argv; |
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| 397 | if (!skip) |
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| 398 | return(1); |
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| 399 | } |
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| 400 | /* NOTREACHED */ |
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| 401 | } |
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| 402 | |
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| 403 | void |
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| 404 | doskip(rtems_shell_hexdump_globals* globals, const char *fname, int statok) |
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| 405 | { |
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| 406 | int cnt; |
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| 407 | struct stat sb; |
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| 408 | |
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| 409 | if (statok) { |
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| 410 | if (fstat(fileno(hdstdin), &sb)) |
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| 411 | err(exit_jump, 1, "%s", fname); |
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[eb649786] | 412 | /* can seek block devices on RTEMS */ |
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| 413 | if (0 && S_ISREG(sb.st_mode) && skip >= sb.st_size) { |
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[e4a3d93] | 414 | address += sb.st_size; |
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| 415 | skip -= sb.st_size; |
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| 416 | return; |
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| 417 | } |
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[eb649786] | 418 | if (1 || S_ISREG(sb.st_mode)) { |
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| 419 | if (fseeko(hdstdin, skip, SEEK_SET)) |
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| 420 | err(exit_jump, 1, "%s", fname); |
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| 421 | address += skip; |
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| 422 | skip = 0; |
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| 423 | } else { |
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| 424 | for (cnt = 0; cnt < skip; ++cnt) |
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| 425 | if (getchar() == EOF) |
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| 426 | break; |
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| 427 | address += cnt; |
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| 428 | skip -= cnt; |
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| 429 | } |
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[e4a3d93] | 430 | } |
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| 431 | } |
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