| 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * hexdump 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) 1989
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| 7 | * The Regents of the University of California. All rights reserved.
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| 8 | *
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| 9 | * Licensed under GPLv2 or later, see file License in this tarball for details.
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| 10 | */
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| 11 |
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| 12 | #include <getopt.h>
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| 13 | #include "libbb.h"
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| 14 | #include "dump.h"
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| 15 |
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| 16 | /* This is a NOEXEC applet. Be very careful! */
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| 17 |
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| 18 |
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| 19 | static void bb_dump_addfile(char *name)
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| 20 | {
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| 21 | char *p;
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| 22 | FILE *fp;
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| 23 | char *buf;
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| 24 |
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| 25 | fp = xfopen(name, "r");
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| 26 |
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| 27 | while ((buf = xmalloc_getline(fp)) != NULL) {
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| 28 | p = skip_whitespace(buf);
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| 29 |
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| 30 | if (*p && (*p != '#')) {
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| 31 | bb_dump_add(p);
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| 32 | }
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| 33 | free(buf);
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| 34 | }
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| 35 | fclose(fp);
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| 36 | }
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| 37 |
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| 38 | static const char *const add_strings[] = {
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| 39 | "\"%07.7_ax \" 16/1 \"%03o \" \"\\n\"", /* b */
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| 40 | "\"%07.7_ax \" 16/1 \"%3_c \" \"\\n\"", /* c */
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| 41 | "\"%07.7_ax \" 8/2 \" %05u \" \"\\n\"", /* d */
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| 42 | "\"%07.7_ax \" 8/2 \" %06o \" \"\\n\"", /* o */
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| 43 | "\"%07.7_ax \" 8/2 \" %04x \" \"\\n\"", /* x */
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| 44 | };
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| 45 |
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| 46 | static const char add_first[] ALIGN1 = "\"%07.7_Ax\n\"";
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| 47 |
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| 48 | static const char hexdump_opts[] ALIGN1 = "bcdoxCe:f:n:s:v";
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| 49 |
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| 50 | static const struct suffix_mult suffixes[] = {
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| 51 | { "b", 512 },
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| 52 | { "k", 1024 },
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| 53 | { "m", 1024*1024 },
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| 54 | { }
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| 55 | };
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| 56 |
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| 57 | int hexdump_main(int argc, char **argv);
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| 58 | int hexdump_main(int argc, char **argv)
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| 59 | {
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| 60 | const char *p;
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| 61 | int ch;
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| 62 |
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| 63 | bb_dump_vflag = FIRST;
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| 64 | bb_dump_length = -1;
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| 65 |
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| 66 | while ((ch = getopt(argc, argv, hexdump_opts)) > 0) {
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| 67 | p = strchr(hexdump_opts, ch);
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| 68 | if (!p)
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| 69 | bb_show_usage();
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| 70 | if ((p - hexdump_opts) < 5) {
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| 71 | bb_dump_add(add_first);
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| 72 | bb_dump_add(add_strings[(int)(p - hexdump_opts)]);
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| 73 | } else if (ch == 'C') {
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| 74 | bb_dump_add("\"%08.8_Ax\n\"");
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| 75 | bb_dump_add("\"%08.8_ax \" 8/1 \"%02x \" \" \" 8/1 \"%02x \" ");
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| 76 | bb_dump_add("\" |\" 16/1 \"%_p\" \"|\\n\"");
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| 77 | } else {
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| 78 | /* Save a little bit of space below by omitting the 'else's. */
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| 79 | if (ch == 'e') {
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| 80 | bb_dump_add(optarg);
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| 81 | } /* else */
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| 82 | if (ch == 'f') {
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| 83 | bb_dump_addfile(optarg);
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| 84 | } /* else */
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| 85 | if (ch == 'n') {
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| 86 | bb_dump_length = xatoi_u(optarg);
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| 87 | } /* else */
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| 88 | if (ch == 's') {
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| 89 | bb_dump_skip = xatoul_range_sfx(optarg, 0, LONG_MAX, suffixes);
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| 90 | } /* else */
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| 91 | if (ch == 'v') {
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| 92 | bb_dump_vflag = ALL;
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| 93 | }
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| 94 | }
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| 95 | }
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| 96 |
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| 97 | if (!bb_dump_fshead) {
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| 98 | bb_dump_add(add_first);
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| 99 | bb_dump_add("\"%07.7_ax \" 8/2 \"%04x \" \"\\n\"");
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| 100 | }
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| 101 |
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| 102 | argv += optind;
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| 103 |
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| 104 | return bb_dump_dump(argv);
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| 105 | }
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