[1770] | 1 | /* vi: set sw=4 ts=4: */
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[821] | 2 | /*
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| 3 | * od implementation for busybox
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| 4 | * Based on code from util-linux v 2.11l
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| 5 | *
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| 6 | * Copyright (c) 1990
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| 7 | * The Regents of the University of California. All rights reserved.
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| 8 | *
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[1770] | 9 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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[821] | 10 | *
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| 11 | * Original copyright notice is retained at the end of this file.
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| 12 | */
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| 13 |
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[1770] | 14 |
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| 15 | #include "libbb.h"
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| 16 | #if ENABLE_DESKTOP
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| 17 | /* This one provides -t (busybox's own build script needs it) */
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| 18 | #include "od_bloaty.c"
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| 19 | #else
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[821] | 20 | #include <getopt.h>
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[1770] | 21 |
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[821] | 22 | #include "dump.h"
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| 23 |
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[1770] | 24 | #define isdecdigit(c) isdigit(c)
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[821] | 25 | #define ishexdigit(c) (isxdigit)(c)
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| 26 |
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| 27 | static void
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| 28 | odoffset(int argc, char ***argvp)
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| 29 | {
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[1770] | 30 | char *num, *p;
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[821] | 31 | int base;
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| 32 | char *end;
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| 33 |
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| 34 | /*
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| 35 | * The offset syntax of od(1) was genuinely bizarre. First, if
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| 36 | * it started with a plus it had to be an offset. Otherwise, if
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| 37 | * there were at least two arguments, a number or lower-case 'x'
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| 38 | * followed by a number makes it an offset. By default it was
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| 39 | * octal; if it started with 'x' or '0x' it was hex. If it ended
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| 40 | * in a '.', it was decimal. If a 'b' or 'B' was appended, it
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| 41 | * multiplied the number by 512 or 1024 byte units. There was
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| 42 | * no way to assign a block count to a hex offset.
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| 43 | *
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| 44 | * We assumes it's a file if the offset is bad.
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| 45 | */
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| 46 | p = **argvp;
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| 47 |
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| 48 | if (!p) {
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| 49 | /* hey someone is probably piping to us ... */
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| 50 | return;
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| 51 | }
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| 52 |
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| 53 | if ((*p != '+')
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| 54 | && (argc < 2
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| 55 | || (!isdecdigit(p[0])
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| 56 | && ((p[0] != 'x') || !ishexdigit(p[1])))))
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| 57 | return;
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| 58 |
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| 59 | base = 0;
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| 60 | /*
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| 61 | * bb_dump_skip over leading '+', 'x[0-9a-fA-f]' or '0x', and
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| 62 | * set base.
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| 63 | */
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| 64 | if (p[0] == '+')
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| 65 | ++p;
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| 66 | if (p[0] == 'x' && ishexdigit(p[1])) {
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| 67 | ++p;
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| 68 | base = 16;
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| 69 | } else if (p[0] == '0' && p[1] == 'x') {
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| 70 | p += 2;
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| 71 | base = 16;
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| 72 | }
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| 73 |
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| 74 | /* bb_dump_skip over the number */
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| 75 | if (base == 16)
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| 76 | for (num = p; ishexdigit(*p); ++p);
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| 77 | else
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| 78 | for (num = p; isdecdigit(*p); ++p);
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| 79 |
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| 80 | /* check for no number */
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| 81 | if (num == p)
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| 82 | return;
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| 83 |
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| 84 | /* if terminates with a '.', base is decimal */
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| 85 | if (*p == '.') {
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| 86 | if (base)
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| 87 | return;
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| 88 | base = 10;
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| 89 | }
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| 90 |
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| 91 | bb_dump_skip = strtol(num, &end, base ? base : 8);
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| 92 |
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| 93 | /* if end isn't the same as p, we got a non-octal digit */
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| 94 | if (end != p)
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| 95 | bb_dump_skip = 0;
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| 96 | else {
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| 97 | if (*p) {
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| 98 | if (*p == 'b') {
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| 99 | bb_dump_skip *= 512;
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| 100 | ++p;
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| 101 | } else if (*p == 'B') {
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| 102 | bb_dump_skip *= 1024;
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| 103 | ++p;
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| 104 | }
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| 105 | }
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| 106 | if (*p)
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| 107 | bb_dump_skip = 0;
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| 108 | else {
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| 109 | ++*argvp;
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| 110 | /*
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| 111 | * If the offset uses a non-octal base, the base of
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| 112 | * the offset is changed as well. This isn't pretty,
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| 113 | * but it's easy.
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| 114 | */
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| 115 | #define TYPE_OFFSET 7
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| 116 | {
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| 117 | char x_or_d;
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| 118 | if (base == 16) {
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| 119 | x_or_d = 'x';
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| 120 | goto DO_X_OR_D;
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| 121 | }
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| 122 | if (base == 10) {
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| 123 | x_or_d = 'd';
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| 124 | DO_X_OR_D:
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| 125 | bb_dump_fshead->nextfu->fmt[TYPE_OFFSET]
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| 126 | = bb_dump_fshead->nextfs->nextfu->fmt[TYPE_OFFSET]
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| 127 | = x_or_d;
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| 128 | }
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| 129 | }
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| 130 | }
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| 131 | }
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| 132 | }
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| 133 |
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[1770] | 134 | static const char *const add_strings[] = {
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[821] | 135 | "16/1 \"%3_u \" \"\\n\"", /* a */
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| 136 | "8/2 \" %06o \" \"\\n\"", /* B, o */
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| 137 | "16/1 \"%03o \" \"\\n\"", /* b */
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| 138 | "16/1 \"%3_c \" \"\\n\"", /* c */
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| 139 | "8/2 \" %05u \" \"\\n\"", /* d */
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| 140 | "4/4 \" %010u \" \"\\n\"", /* D */
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| 141 | "2/8 \" %21.14e \" \"\\n\"", /* e (undocumented in od), F */
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| 142 | "4/4 \" %14.7e \" \"\\n\"", /* f */
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| 143 | "4/4 \" %08x \" \"\\n\"", /* H, X */
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| 144 | "8/2 \" %04x \" \"\\n\"", /* h, x */
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| 145 | "4/4 \" %11d \" \"\\n\"", /* I, L, l */
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| 146 | "8/2 \" %6d \" \"\\n\"", /* i */
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| 147 | "4/4 \" %011o \" \"\\n\"", /* O */
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| 148 | };
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| 149 |
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[1770] | 150 | static const char od_opts[] ALIGN1 = "aBbcDdeFfHhIiLlOoXxv";
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[821] | 151 |
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[1770] | 152 | static const char od_o2si[] ALIGN1 = {
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[821] | 153 | 0, 1, 2, 3, 5,
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| 154 | 4, 6, 6, 7, 8,
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| 155 | 9, 0xa, 0xb, 0xa, 0xa,
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| 156 | 0xb, 1, 8, 9,
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| 157 | };
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| 158 |
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[1770] | 159 | int od_main(int argc, char **argv);
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[821] | 160 | int od_main(int argc, char **argv)
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| 161 | {
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| 162 | int ch;
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| 163 | int first = 1;
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| 164 | char *p;
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| 165 | bb_dump_vflag = FIRST;
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| 166 | bb_dump_length = -1;
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| 167 |
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| 168 | while ((ch = getopt(argc, argv, od_opts)) > 0) {
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| 169 | if (ch == 'v') {
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| 170 | bb_dump_vflag = ALL;
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| 171 | } else if (((p = strchr(od_opts, ch)) != NULL) && (*p != '\0')) {
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| 172 | if (first) {
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| 173 | first = 0;
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| 174 | bb_dump_add("\"%07.7_Ao\n\"");
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| 175 | bb_dump_add("\"%07.7_ao \"");
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| 176 | } else {
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| 177 | bb_dump_add("\" \"");
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| 178 | }
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| 179 | bb_dump_add(add_strings[(int)od_o2si[(p-od_opts)]]);
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| 180 | } else { /* P, p, s, w, or other unhandled */
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| 181 | bb_show_usage();
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| 182 | }
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| 183 | }
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| 184 | if (!bb_dump_fshead) {
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| 185 | bb_dump_add("\"%07.7_Ao\n\"");
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| 186 | bb_dump_add("\"%07.7_ao \" 8/2 \"%06o \" \"\\n\"");
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| 187 | }
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| 188 |
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| 189 | argc -= optind;
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| 190 | argv += optind;
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| 191 |
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| 192 | odoffset(argc, &argv);
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| 193 |
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[1770] | 194 | return bb_dump_dump(argv);
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[821] | 195 | }
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[1770] | 196 | #endif /* ENABLE_DESKTOP */
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[821] | 197 |
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| 198 | /*-
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| 199 | * Copyright (c) 1990 The Regents of the University of California.
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| 200 | * All rights reserved.
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| 201 | *
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| 202 | * Redistribution and use in source and binary forms, with or without
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| 203 | * modification, are permitted provided that the following conditions
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| 204 | * are met:
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| 205 | * 1. Redistributions of source code must retain the above copyright
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| 206 | * notice, this list of conditions and the following disclaimer.
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| 207 | * 2. Redistributions in binary form must reproduce the above copyright
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| 208 | * notice, this list of conditions and the following disclaimer in the
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| 209 | * documentation and/or other materials provided with the distribution.
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| 210 | * 3. Neither the name of the University nor the names of its contributors
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| 211 | * may be used to endorse or promote products derived from this software
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| 212 | * without specific prior written permission.
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| 213 | *
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| 214 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 215 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 216 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 217 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 218 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 219 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 220 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 221 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 222 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 223 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 224 | * SUCH DAMAGE.
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| 225 | */
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