[821] | 1 | /*
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| 2 | * Support code for the hexdump and od applets,
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| 3 | * based on code from util-linux v 2.11l
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| 4 | *
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| 5 | * Copyright (c) 1989
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| 6 | * The Regents of the University of California. All rights reserved.
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| 7 | *
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| 8 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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| 9 | *
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| 10 | * Original copyright notice is retained at the end of this file.
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| 11 | */
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| 12 |
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| 13 | #include "libbb.h"
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| 14 | #include <string.h>
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| 15 | #include <unistd.h>
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| 16 | #include <ctype.h> /* for isdigit() */
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| 17 | #include "dump.h"
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| 18 |
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| 19 | enum _vflag bb_dump_vflag = FIRST;
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| 20 | FS *bb_dump_fshead; /* head of format strings */
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| 21 | static FU *endfu;
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| 22 | static char **_argv;
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| 23 | static off_t savaddress; /* saved address/offset in stream */
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| 24 | static off_t eaddress; /* end address */
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| 25 | static off_t address; /* address/offset in stream */
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| 26 | off_t bb_dump_skip; /* bytes to skip */
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| 27 | static int exitval; /* final exit value */
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| 28 | int bb_dump_blocksize; /* data block size */
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| 29 | int bb_dump_length = -1; /* max bytes to read */
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| 30 |
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| 31 | static const char index_str[] = ".#-+ 0123456789";
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| 32 |
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| 33 | static const char size_conv_str[] =
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| 34 | "\x1\x4\x4\x4\x4\x4\x4\x8\x8\x8\x8\010cdiouxXeEfgG";
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| 35 |
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| 36 | static const char lcc[] = "diouxX";
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| 37 |
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| 38 | int bb_dump_size(FS * fs)
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| 39 | {
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| 40 | register FU *fu;
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| 41 | register int bcnt, cur_size;
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| 42 | register char *fmt;
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| 43 | const char *p;
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| 44 | int prec;
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| 45 |
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| 46 | /* figure out the data block bb_dump_size needed for each format unit */
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| 47 | for (cur_size = 0, fu = fs->nextfu; fu; fu = fu->nextfu) {
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| 48 | if (fu->bcnt) {
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| 49 | cur_size += fu->bcnt * fu->reps;
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| 50 | continue;
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| 51 | }
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| 52 | for (bcnt = prec = 0, fmt = fu->fmt; *fmt; ++fmt) {
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| 53 | if (*fmt != '%')
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| 54 | continue;
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| 55 | /*
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| 56 | * bb_dump_skip any special chars -- save precision in
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| 57 | * case it's a %s format.
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| 58 | */
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| 59 | while (strchr(index_str + 1, *++fmt));
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| 60 | if (*fmt == '.' && isdigit(*++fmt)) {
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| 61 | prec = atoi(fmt);
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| 62 | while (isdigit(*++fmt));
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| 63 | }
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| 64 | if (!(p = strchr(size_conv_str + 12, *fmt))) {
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| 65 | if (*fmt == 's') {
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| 66 | bcnt += prec;
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| 67 | } else if (*fmt == '_') {
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| 68 | ++fmt;
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| 69 | if ((*fmt == 'c') || (*fmt == 'p') || (*fmt == 'u')) {
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| 70 | bcnt += 1;
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| 71 | }
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| 72 | }
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| 73 | } else {
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| 74 | bcnt += size_conv_str[p - (size_conv_str + 12)];
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| 75 | }
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| 76 | }
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| 77 | cur_size += bcnt * fu->reps;
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| 78 | }
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| 79 | return (cur_size);
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| 80 | }
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| 81 |
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| 82 | static void rewrite(FS * fs)
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| 83 | {
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| 84 | enum { NOTOKAY, USEBCNT, USEPREC } sokay;
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| 85 | PR *pr, **nextpr = NULL;
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| 86 | FU *fu;
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| 87 | char *p1, *p2, *p3;
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| 88 | char savech, *fmtp;
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| 89 | const char *byte_count_str;
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| 90 | int nconv, prec = 0;
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| 91 |
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| 92 | for (fu = fs->nextfu; fu; fu = fu->nextfu) {
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| 93 | /*
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| 94 | * break each format unit into print units; each
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| 95 | * conversion character gets its own.
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| 96 | */
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| 97 | for (nconv = 0, fmtp = fu->fmt; *fmtp; nextpr = &pr->nextpr) {
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| 98 | /* NOSTRICT */
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| 99 | /* DBU:[dvae@cray.com] calloc so that forward ptrs start out NULL*/
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| 100 | pr = xzalloc(sizeof(PR));
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| 101 | if (!fu->nextpr)
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| 102 | fu->nextpr = pr;
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| 103 | /* ignore nextpr -- its unused inside the loop and is
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| 104 | * uninitialized 1st time thru.
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| 105 | */
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| 106 |
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| 107 | /* bb_dump_skip preceding text and up to the next % sign */
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| 108 | for (p1 = fmtp; *p1 && *p1 != '%'; ++p1);
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| 109 |
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| 110 | /* only text in the string */
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| 111 | if (!*p1) {
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| 112 | pr->fmt = fmtp;
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| 113 | pr->flags = F_TEXT;
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| 114 | break;
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| 115 | }
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| 116 |
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| 117 | /*
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| 118 | * get precision for %s -- if have a byte count, don't
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| 119 | * need it.
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| 120 | */
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| 121 | if (fu->bcnt) {
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| 122 | sokay = USEBCNT;
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| 123 | /* bb_dump_skip to conversion character */
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| 124 | for (++p1; strchr(index_str, *p1); ++p1);
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| 125 | } else {
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| 126 | /* bb_dump_skip any special chars, field width */
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| 127 | while (strchr(index_str + 1, *++p1));
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| 128 | if (*p1 == '.' && isdigit(*++p1)) {
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| 129 | sokay = USEPREC;
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| 130 | prec = atoi(p1);
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| 131 | while (isdigit(*++p1));
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| 132 | } else
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| 133 | sokay = NOTOKAY;
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| 134 | }
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| 135 |
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| 136 | p2 = p1 + 1; /* set end pointer */
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| 137 |
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| 138 | /*
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| 139 | * figure out the byte count for each conversion;
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| 140 | * rewrite the format as necessary, set up blank-
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| 141 | * pbb_dump_adding for end of data.
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| 142 | */
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| 143 |
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| 144 | if (*p1 == 'c') {
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| 145 | pr->flags = F_CHAR;
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| 146 | DO_BYTE_COUNT_1:
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| 147 | byte_count_str = "\001";
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| 148 | DO_BYTE_COUNT:
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| 149 | if (fu->bcnt) {
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| 150 | do {
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| 151 | if (fu->bcnt == *byte_count_str) {
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| 152 | break;
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| 153 | }
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| 154 | } while (*++byte_count_str);
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| 155 | }
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| 156 | /* Unlike the original, output the remainder of the format string. */
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| 157 | if (!*byte_count_str) {
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| 158 | bb_error_msg_and_die("bad byte count for conversion character %s.", p1);
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| 159 | }
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| 160 | pr->bcnt = *byte_count_str;
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| 161 | } else if (*p1 == 'l') {
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| 162 | ++p2;
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| 163 | ++p1;
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| 164 | DO_INT_CONV:
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| 165 | {
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| 166 | const char *e;
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| 167 | if (!(e = strchr(lcc, *p1))) {
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| 168 | goto DO_BAD_CONV_CHAR;
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| 169 | }
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| 170 | pr->flags = F_INT;
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| 171 | if (e > lcc + 1) {
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| 172 | pr->flags = F_UINT;
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| 173 | }
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| 174 | byte_count_str = "\004\002\001";
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| 175 | goto DO_BYTE_COUNT;
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| 176 | }
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| 177 | /* NOTREACHED */
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| 178 | } else if (strchr(lcc, *p1)) {
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| 179 | goto DO_INT_CONV;
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| 180 | } else if (strchr("eEfgG", *p1)) {
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| 181 | pr->flags = F_DBL;
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| 182 | byte_count_str = "\010\004";
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| 183 | goto DO_BYTE_COUNT;
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| 184 | } else if (*p1 == 's') {
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| 185 | pr->flags = F_STR;
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| 186 | if (sokay == USEBCNT) {
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| 187 | pr->bcnt = fu->bcnt;
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| 188 | } else if (sokay == USEPREC) {
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| 189 | pr->bcnt = prec;
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| 190 | } else { /* NOTOKAY */
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| 191 | bb_error_msg_and_die("%%s requires a precision or a byte count.");
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| 192 | }
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| 193 | } else if (*p1 == '_') {
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| 194 | ++p2;
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| 195 | switch (p1[1]) {
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| 196 | case 'A':
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| 197 | endfu = fu;
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| 198 | fu->flags |= F_IGNORE;
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| 199 | /* FALLTHROUGH */
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| 200 | case 'a':
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| 201 | pr->flags = F_ADDRESS;
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| 202 | ++p2;
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| 203 | if ((p1[2] != 'd') && (p1[2] != 'o') && (p1[2] != 'x')) {
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| 204 | goto DO_BAD_CONV_CHAR;
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| 205 | }
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| 206 | *p1 = p1[2];
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| 207 | break;
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| 208 | case 'c':
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| 209 | pr->flags = F_C;
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| 210 | /* *p1 = 'c'; set in conv_c */
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| 211 | goto DO_BYTE_COUNT_1;
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| 212 | case 'p':
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| 213 | pr->flags = F_P;
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| 214 | *p1 = 'c';
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| 215 | goto DO_BYTE_COUNT_1;
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| 216 | case 'u':
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| 217 | pr->flags = F_U;
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| 218 | /* *p1 = 'c'; set in conv_u */
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| 219 | goto DO_BYTE_COUNT_1;
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| 220 | default:
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| 221 | goto DO_BAD_CONV_CHAR;
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| 222 | }
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| 223 | } else {
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| 224 | DO_BAD_CONV_CHAR:
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| 225 | bb_error_msg_and_die("bad conversion character %%%s.\n", p1);
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| 226 | }
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| 227 |
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| 228 | /*
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| 229 | * copy to PR format string, set conversion character
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| 230 | * pointer, update original.
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| 231 | */
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| 232 | savech = *p2;
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| 233 | p1[1] = '\0';
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| 234 | pr->fmt = bb_xstrdup(fmtp);
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| 235 | *p2 = savech;
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| 236 | pr->cchar = pr->fmt + (p1 - fmtp);
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| 237 |
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| 238 | /* DBU:[dave@cray.com] w/o this, trailing fmt text, space is lost.
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| 239 | * Skip subsequent text and up to the next % sign and tack the
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| 240 | * additional text onto fmt: eg. if fmt is "%x is a HEX number",
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| 241 | * we lose the " is a HEX number" part of fmt.
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| 242 | */
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| 243 | for (p3 = p2; *p3 && *p3 != '%'; p3++);
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| 244 | if (p3 > p2)
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| 245 | {
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| 246 | savech = *p3;
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| 247 | *p3 = '\0';
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| 248 | pr->fmt = xrealloc(pr->fmt, strlen(pr->fmt)+(p3-p2)+1);
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| 249 | strcat(pr->fmt, p2);
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| 250 | *p3 = savech;
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| 251 | p2 = p3;
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| 252 | }
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| 253 |
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| 254 | fmtp = p2;
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| 255 |
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| 256 | /* only one conversion character if byte count */
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| 257 | if (!(pr->flags & F_ADDRESS) && fu->bcnt && nconv++) {
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| 258 | bb_error_msg_and_die("byte count with multiple conversion characters.\n");
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| 259 | }
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| 260 | }
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| 261 | /*
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| 262 | * if format unit byte count not specified, figure it out
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| 263 | * so can adjust rep count later.
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| 264 | */
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| 265 | if (!fu->bcnt)
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| 266 | for (pr = fu->nextpr; pr; pr = pr->nextpr)
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| 267 | fu->bcnt += pr->bcnt;
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| 268 | }
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| 269 | /*
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| 270 | * if the format string interprets any data at all, and it's
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| 271 | * not the same as the bb_dump_blocksize, and its last format unit
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| 272 | * interprets any data at all, and has no iteration count,
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| 273 | * repeat it as necessary.
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| 274 | *
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| 275 | * if, rep count is greater than 1, no trailing whitespace
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| 276 | * gets output from the last iteration of the format unit.
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| 277 | */
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| 278 | for (fu = fs->nextfu;; fu = fu->nextfu) {
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| 279 | if (!fu->nextfu && fs->bcnt < bb_dump_blocksize &&
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| 280 | !(fu->flags & F_SETREP) && fu->bcnt)
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| 281 | fu->reps += (bb_dump_blocksize - fs->bcnt) / fu->bcnt;
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| 282 | if (fu->reps > 1) {
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| 283 | for (pr = fu->nextpr;; pr = pr->nextpr)
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| 284 | if (!pr->nextpr)
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| 285 | break;
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| 286 | for (p1 = pr->fmt, p2 = NULL; *p1; ++p1)
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| 287 | p2 = isspace(*p1) ? p1 : NULL;
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| 288 | if (p2)
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| 289 | pr->nospace = p2;
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| 290 | }
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| 291 | if (!fu->nextfu)
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| 292 | break;
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| 293 | }
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| 294 | }
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| 295 |
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| 296 | static void do_skip(char *fname, int statok)
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| 297 | {
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| 298 | struct stat sbuf;
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| 299 |
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| 300 | if (statok) {
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| 301 | if (fstat(STDIN_FILENO, &sbuf)) {
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| 302 | bb_perror_msg_and_die("%s", fname);
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| 303 | }
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| 304 | if ((!(S_ISCHR(sbuf.st_mode) ||
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| 305 | S_ISBLK(sbuf.st_mode) ||
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| 306 | S_ISFIFO(sbuf.st_mode))) && bb_dump_skip >= sbuf.st_size) {
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| 307 | /* If bb_dump_size valid and bb_dump_skip >= size */
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| 308 | bb_dump_skip -= sbuf.st_size;
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| 309 | address += sbuf.st_size;
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| 310 | return;
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| 311 | }
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| 312 | }
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| 313 | if (fseek(stdin, bb_dump_skip, SEEK_SET)) {
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| 314 | bb_perror_msg_and_die("%s", fname);
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| 315 | }
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| 316 | savaddress = address += bb_dump_skip;
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| 317 | bb_dump_skip = 0;
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| 318 | }
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| 319 |
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| 320 | static int next(char **argv)
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| 321 | {
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| 322 | static int done;
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| 323 | int statok;
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| 324 |
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| 325 | if (argv) {
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| 326 | _argv = argv;
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| 327 | return (1);
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| 328 | }
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| 329 | for (;;) {
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| 330 | if (*_argv) {
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| 331 | if (!(freopen(*_argv, "r", stdin))) {
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| 332 | bb_perror_msg("%s", *_argv);
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| 333 | exitval = 1;
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| 334 | ++_argv;
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| 335 | continue;
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| 336 | }
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| 337 | statok = done = 1;
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| 338 | } else {
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| 339 | if (done++)
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| 340 | return (0);
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| 341 | statok = 0;
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| 342 | }
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| 343 | if (bb_dump_skip)
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| 344 | do_skip(statok ? *_argv : "stdin", statok);
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| 345 | if (*_argv)
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| 346 | ++_argv;
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| 347 | if (!bb_dump_skip)
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| 348 | return (1);
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| 349 | }
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| 350 | /* NOTREACHED */
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| 351 | }
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| 352 |
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| 353 | static unsigned char *get(void)
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| 354 | {
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| 355 | static int ateof = 1;
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| 356 | static unsigned char *curp=NULL, *savp; /*DBU:[dave@cray.com]initialize curp */
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| 357 | register int n;
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| 358 | int need, nread;
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| 359 | unsigned char *tmpp;
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| 360 |
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| 361 | if (!curp) {
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| 362 | address = (off_t)0; /*DBU:[dave@cray.com] initialize,initialize..*/
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| 363 | curp = (unsigned char *) xmalloc(bb_dump_blocksize);
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| 364 | savp = (unsigned char *) xmalloc(bb_dump_blocksize);
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| 365 | } else {
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| 366 | tmpp = curp;
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| 367 | curp = savp;
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| 368 | savp = tmpp;
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| 369 | address = savaddress += bb_dump_blocksize;
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| 370 | }
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| 371 | for (need = bb_dump_blocksize, nread = 0;;) {
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| 372 | /*
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| 373 | * if read the right number of bytes, or at EOF for one file,
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| 374 | * and no other files are available, zero-pad the rest of the
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| 375 | * block and set the end flag.
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| 376 | */
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| 377 | if (!bb_dump_length || (ateof && !next((char **) NULL))) {
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| 378 | if (need == bb_dump_blocksize) {
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| 379 | return ((unsigned char *) NULL);
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| 380 | }
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| 381 | if (bb_dump_vflag != ALL && !memcmp(curp, savp, nread)) {
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| 382 | if (bb_dump_vflag != DUP) {
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| 383 | printf("*\n");
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| 384 | }
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| 385 | return ((unsigned char *) NULL);
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| 386 | }
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| 387 | memset((char *) curp + nread, 0, need);
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| 388 | eaddress = address + nread;
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| 389 | return (curp);
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| 390 | }
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| 391 | n = fread((char *) curp + nread, sizeof(unsigned char),
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| 392 | bb_dump_length == -1 ? need : MIN(bb_dump_length, need), stdin);
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| 393 | if (!n) {
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| 394 | if (ferror(stdin)) {
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| 395 | bb_perror_msg("%s", _argv[-1]);
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| 396 | }
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| 397 | ateof = 1;
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| 398 | continue;
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| 399 | }
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| 400 | ateof = 0;
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| 401 | if (bb_dump_length != -1) {
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| 402 | bb_dump_length -= n;
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| 403 | }
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| 404 | if (!(need -= n)) {
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| 405 | if (bb_dump_vflag == ALL || bb_dump_vflag == FIRST
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| 406 | || memcmp(curp, savp, bb_dump_blocksize)) {
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| 407 | if (bb_dump_vflag == DUP || bb_dump_vflag == FIRST) {
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| 408 | bb_dump_vflag = WAIT;
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| 409 | }
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| 410 | return (curp);
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| 411 | }
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| 412 | if (bb_dump_vflag == WAIT) {
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| 413 | printf("*\n");
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| 414 | }
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| 415 | bb_dump_vflag = DUP;
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| 416 | address = savaddress += bb_dump_blocksize;
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| 417 | need = bb_dump_blocksize;
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| 418 | nread = 0;
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| 419 | } else {
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| 420 | nread += n;
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| 421 | }
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| 422 | }
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| 423 | }
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| 424 |
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| 425 | static void bpad(PR * pr)
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| 426 | {
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| 427 | char *p1, *p2;
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| 428 |
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| 429 | /*
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| 430 | * remove all conversion flags; '-' is the only one valid
|
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| 431 | * with %s, and it's not useful here.
|
---|
| 432 | */
|
---|
| 433 | pr->flags = F_BPAD;
|
---|
| 434 | *pr->cchar = 's';
|
---|
| 435 | for (p1 = pr->fmt; *p1 != '%'; ++p1);
|
---|
| 436 | for (p2 = ++p1; *p1 && strchr(" -0+#", *p1); ++p1)
|
---|
| 437 | if (pr->nospace) pr->nospace--;
|
---|
| 438 | while ((*p2++ = *p1++) != 0);
|
---|
| 439 | }
|
---|
| 440 |
|
---|
| 441 | static const char conv_str[] =
|
---|
| 442 | "\0\\0\0"
|
---|
| 443 | "\007\\a\0" /* \a */
|
---|
| 444 | "\b\\b\0"
|
---|
| 445 | "\f\\b\0"
|
---|
| 446 | "\n\\n\0"
|
---|
| 447 | "\r\\r\0"
|
---|
| 448 | "\t\\t\0"
|
---|
| 449 | "\v\\v\0"
|
---|
| 450 | "\0";
|
---|
| 451 |
|
---|
| 452 |
|
---|
| 453 | static void conv_c(PR * pr, unsigned char * p)
|
---|
| 454 | {
|
---|
| 455 | const char *str = conv_str;
|
---|
| 456 | char buf[10];
|
---|
| 457 |
|
---|
| 458 | do {
|
---|
| 459 | if (*p == *str) {
|
---|
| 460 | ++str;
|
---|
| 461 | goto strpr;
|
---|
| 462 | }
|
---|
| 463 | str += 4;
|
---|
| 464 | } while (*str);
|
---|
| 465 |
|
---|
| 466 | if (isprint(*p)) {
|
---|
| 467 | *pr->cchar = 'c';
|
---|
| 468 | (void) printf(pr->fmt, *p);
|
---|
| 469 | } else {
|
---|
| 470 | sprintf(buf, "%03o", (int) *p);
|
---|
| 471 | str = buf;
|
---|
| 472 | strpr:
|
---|
| 473 | *pr->cchar = 's';
|
---|
| 474 | printf(pr->fmt, str);
|
---|
| 475 | }
|
---|
| 476 | }
|
---|
| 477 |
|
---|
| 478 | static void conv_u(PR * pr, unsigned char * p)
|
---|
| 479 | {
|
---|
| 480 | static const char list[] =
|
---|
| 481 | "nul\0soh\0stx\0etx\0eot\0enq\0ack\0bel\0"
|
---|
| 482 | "bs\0_ht\0_lf\0_vt\0_ff\0_cr\0_so\0_si\0_"
|
---|
| 483 | "dle\0dcl\0dc2\0dc3\0dc4\0nak\0syn\0etb\0"
|
---|
| 484 | "can\0em\0_sub\0esc\0fs\0_gs\0_rs\0_us";
|
---|
| 485 |
|
---|
| 486 | /* od used nl, not lf */
|
---|
| 487 | if (*p <= 0x1f) {
|
---|
| 488 | *pr->cchar = 's';
|
---|
| 489 | printf(pr->fmt, list + (4 * (int)*p));
|
---|
| 490 | } else if (*p == 0x7f) {
|
---|
| 491 | *pr->cchar = 's';
|
---|
| 492 | printf(pr->fmt, "del");
|
---|
| 493 | } else if (isprint(*p)) {
|
---|
| 494 | *pr->cchar = 'c';
|
---|
| 495 | printf(pr->fmt, *p);
|
---|
| 496 | } else {
|
---|
| 497 | *pr->cchar = 'x';
|
---|
| 498 | printf(pr->fmt, (int) *p);
|
---|
| 499 | }
|
---|
| 500 | }
|
---|
| 501 |
|
---|
| 502 | static void display(void)
|
---|
| 503 | {
|
---|
| 504 | /* extern FU *endfu; */
|
---|
| 505 | register FS *fs;
|
---|
| 506 | register FU *fu;
|
---|
| 507 | register PR *pr;
|
---|
| 508 | register int cnt;
|
---|
| 509 | register unsigned char *bp;
|
---|
| 510 |
|
---|
| 511 | off_t saveaddress;
|
---|
| 512 | unsigned char savech = 0, *savebp;
|
---|
| 513 |
|
---|
| 514 | while ((bp = get()) != NULL) {
|
---|
| 515 | for (fs = bb_dump_fshead, savebp = bp, saveaddress = address; fs;
|
---|
| 516 | fs = fs->nextfs, bp = savebp, address = saveaddress) {
|
---|
| 517 | for (fu = fs->nextfu; fu; fu = fu->nextfu) {
|
---|
| 518 | if (fu->flags & F_IGNORE) {
|
---|
| 519 | break;
|
---|
| 520 | }
|
---|
| 521 | for (cnt = fu->reps; cnt; --cnt) {
|
---|
| 522 | for (pr = fu->nextpr; pr; address += pr->bcnt,
|
---|
| 523 | bp += pr->bcnt, pr = pr->nextpr) {
|
---|
| 524 | if (eaddress && address >= eaddress &&
|
---|
| 525 | !(pr->flags & (F_TEXT | F_BPAD))) {
|
---|
| 526 | bpad(pr);
|
---|
| 527 | }
|
---|
| 528 | if (cnt == 1 && pr->nospace) {
|
---|
| 529 | savech = *pr->nospace;
|
---|
| 530 | *pr->nospace = '\0';
|
---|
| 531 | }
|
---|
| 532 | /* PRINT; */
|
---|
| 533 | switch (pr->flags) {
|
---|
| 534 | case F_ADDRESS:
|
---|
| 535 | printf(pr->fmt, (unsigned int) address);
|
---|
| 536 | break;
|
---|
| 537 | case F_BPAD:
|
---|
| 538 | printf(pr->fmt, "");
|
---|
| 539 | break;
|
---|
| 540 | case F_C:
|
---|
| 541 | conv_c(pr, bp);
|
---|
| 542 | break;
|
---|
| 543 | case F_CHAR:
|
---|
| 544 | printf(pr->fmt, *bp);
|
---|
| 545 | break;
|
---|
| 546 | case F_DBL:{
|
---|
| 547 | double dval;
|
---|
| 548 | float fval;
|
---|
| 549 |
|
---|
| 550 | switch (pr->bcnt) {
|
---|
| 551 | case 4:
|
---|
| 552 | memmove((char *) &fval, (char *) bp,
|
---|
| 553 | sizeof(fval));
|
---|
| 554 | printf(pr->fmt, fval);
|
---|
| 555 | break;
|
---|
| 556 | case 8:
|
---|
| 557 | memmove((char *) &dval, (char *) bp,
|
---|
| 558 | sizeof(dval));
|
---|
| 559 | printf(pr->fmt, dval);
|
---|
| 560 | break;
|
---|
| 561 | }
|
---|
| 562 | break;
|
---|
| 563 | }
|
---|
| 564 | case F_INT:{
|
---|
| 565 | int ival;
|
---|
| 566 | short sval;
|
---|
| 567 |
|
---|
| 568 | switch (pr->bcnt) {
|
---|
| 569 | case 1:
|
---|
| 570 | printf(pr->fmt, (int) *bp);
|
---|
| 571 | break;
|
---|
| 572 | case 2:
|
---|
| 573 | memmove((char *) &sval, (char *) bp,
|
---|
| 574 | sizeof(sval));
|
---|
| 575 | printf(pr->fmt, (int) sval);
|
---|
| 576 | break;
|
---|
| 577 | case 4:
|
---|
| 578 | memmove((char *) &ival, (char *) bp,
|
---|
| 579 | sizeof(ival));
|
---|
| 580 | printf(pr->fmt, ival);
|
---|
| 581 | break;
|
---|
| 582 | }
|
---|
| 583 | break;
|
---|
| 584 | }
|
---|
| 585 | case F_P:
|
---|
| 586 | printf(pr->fmt, isprint(*bp) ? *bp : '.');
|
---|
| 587 | break;
|
---|
| 588 | case F_STR:
|
---|
| 589 | printf(pr->fmt, (char *) bp);
|
---|
| 590 | break;
|
---|
| 591 | case F_TEXT:
|
---|
| 592 | printf(pr->fmt);
|
---|
| 593 | break;
|
---|
| 594 | case F_U:
|
---|
| 595 | conv_u(pr, bp);
|
---|
| 596 | break;
|
---|
| 597 | case F_UINT:{
|
---|
| 598 | unsigned int ival;
|
---|
| 599 | unsigned short sval;
|
---|
| 600 |
|
---|
| 601 | switch (pr->bcnt) {
|
---|
| 602 | case 1:
|
---|
| 603 | printf(pr->fmt, (unsigned int) * bp);
|
---|
| 604 | break;
|
---|
| 605 | case 2:
|
---|
| 606 | memmove((char *) &sval, (char *) bp,
|
---|
| 607 | sizeof(sval));
|
---|
| 608 | printf(pr->fmt, (unsigned int) sval);
|
---|
| 609 | break;
|
---|
| 610 | case 4:
|
---|
| 611 | memmove((char *) &ival, (char *) bp,
|
---|
| 612 | sizeof(ival));
|
---|
| 613 | printf(pr->fmt, ival);
|
---|
| 614 | break;
|
---|
| 615 | }
|
---|
| 616 | break;
|
---|
| 617 | }
|
---|
| 618 | }
|
---|
| 619 | if (cnt == 1 && pr->nospace) {
|
---|
| 620 | *pr->nospace = savech;
|
---|
| 621 | }
|
---|
| 622 | }
|
---|
| 623 | }
|
---|
| 624 | }
|
---|
| 625 | }
|
---|
| 626 | }
|
---|
| 627 | if (endfu) {
|
---|
| 628 | /*
|
---|
| 629 | * if eaddress not set, error or file bb_dump_size was multiple of
|
---|
| 630 | * bb_dump_blocksize, and no partial block ever found.
|
---|
| 631 | */
|
---|
| 632 | if (!eaddress) {
|
---|
| 633 | if (!address) {
|
---|
| 634 | return;
|
---|
| 635 | }
|
---|
| 636 | eaddress = address;
|
---|
| 637 | }
|
---|
| 638 | for (pr = endfu->nextpr; pr; pr = pr->nextpr) {
|
---|
| 639 | switch (pr->flags) {
|
---|
| 640 | case F_ADDRESS:
|
---|
| 641 | (void) printf(pr->fmt, (unsigned int) eaddress);
|
---|
| 642 | break;
|
---|
| 643 | case F_TEXT:
|
---|
| 644 | (void) printf(pr->fmt);
|
---|
| 645 | break;
|
---|
| 646 | }
|
---|
| 647 | }
|
---|
| 648 | }
|
---|
| 649 | }
|
---|
| 650 |
|
---|
| 651 | int bb_dump_dump(char **argv)
|
---|
| 652 | {
|
---|
| 653 | register FS *tfs;
|
---|
| 654 |
|
---|
| 655 | /* figure out the data block bb_dump_size */
|
---|
| 656 | for (bb_dump_blocksize = 0, tfs = bb_dump_fshead; tfs; tfs = tfs->nextfs) {
|
---|
| 657 | tfs->bcnt = bb_dump_size(tfs);
|
---|
| 658 | if (bb_dump_blocksize < tfs->bcnt) {
|
---|
| 659 | bb_dump_blocksize = tfs->bcnt;
|
---|
| 660 | }
|
---|
| 661 | }
|
---|
| 662 | /* rewrite the rules, do syntax checking */
|
---|
| 663 | for (tfs = bb_dump_fshead; tfs; tfs = tfs->nextfs) {
|
---|
| 664 | rewrite(tfs);
|
---|
| 665 | }
|
---|
| 666 |
|
---|
| 667 | next(argv);
|
---|
| 668 | display();
|
---|
| 669 |
|
---|
| 670 | return (exitval);
|
---|
| 671 | }
|
---|
| 672 |
|
---|
| 673 | void bb_dump_add(const char *fmt)
|
---|
| 674 | {
|
---|
| 675 | const char *p;
|
---|
| 676 | char *p1;
|
---|
| 677 | char *p2;
|
---|
| 678 | static FS **nextfs;
|
---|
| 679 | FS *tfs;
|
---|
| 680 | FU *tfu, **nextfu;
|
---|
| 681 | const char *savep;
|
---|
| 682 |
|
---|
| 683 | /* start new linked list of format units */
|
---|
| 684 | tfs = xzalloc(sizeof(FS)); /*DBU:[dave@cray.com] start out NULL */
|
---|
| 685 | if (!bb_dump_fshead) {
|
---|
| 686 | bb_dump_fshead = tfs;
|
---|
| 687 | } else {
|
---|
| 688 | *nextfs = tfs;
|
---|
| 689 | }
|
---|
| 690 | nextfs = &tfs->nextfs;
|
---|
| 691 | nextfu = &tfs->nextfu;
|
---|
| 692 |
|
---|
| 693 | /* take the format string and break it up into format units */
|
---|
| 694 | for (p = fmt;;) {
|
---|
| 695 | /* bb_dump_skip leading white space */
|
---|
| 696 | p = skip_whitespace(p);
|
---|
| 697 | if (!*p) {
|
---|
| 698 | break;
|
---|
| 699 | }
|
---|
| 700 |
|
---|
| 701 | /* allocate a new format unit and link it in */
|
---|
| 702 | /* NOSTRICT */
|
---|
| 703 | /* DBU:[dave@cray.com] calloc so that forward pointers start out NULL */
|
---|
| 704 | tfu = xzalloc(sizeof(FU));
|
---|
| 705 | *nextfu = tfu;
|
---|
| 706 | nextfu = &tfu->nextfu;
|
---|
| 707 | tfu->reps = 1;
|
---|
| 708 |
|
---|
| 709 | /* if leading digit, repetition count */
|
---|
| 710 | if (isdigit(*p)) {
|
---|
| 711 | for (savep = p; isdigit(*p); ++p);
|
---|
| 712 | if (!isspace(*p) && *p != '/') {
|
---|
| 713 | bb_error_msg_and_die("bad format {%s}", fmt);
|
---|
| 714 | }
|
---|
| 715 | /* may overwrite either white space or slash */
|
---|
| 716 | tfu->reps = atoi(savep);
|
---|
| 717 | tfu->flags = F_SETREP;
|
---|
| 718 | /* bb_dump_skip trailing white space */
|
---|
| 719 | p = skip_whitespace(++p);
|
---|
| 720 | }
|
---|
| 721 |
|
---|
| 722 | /* bb_dump_skip slash and trailing white space */
|
---|
| 723 | if (*p == '/') {
|
---|
| 724 | p = skip_whitespace(++p);
|
---|
| 725 | }
|
---|
| 726 |
|
---|
| 727 | /* byte count */
|
---|
| 728 | if (isdigit(*p)) {
|
---|
| 729 | for (savep = p; isdigit(*p); ++p);
|
---|
| 730 | if (!isspace(*p)) {
|
---|
| 731 | bb_error_msg_and_die("bad format {%s}", fmt);
|
---|
| 732 | }
|
---|
| 733 | tfu->bcnt = atoi(savep);
|
---|
| 734 | /* bb_dump_skip trailing white space */
|
---|
| 735 | p = skip_whitespace(++p);
|
---|
| 736 | }
|
---|
| 737 |
|
---|
| 738 | /* format */
|
---|
| 739 | if (*p != '"') {
|
---|
| 740 | bb_error_msg_and_die("bad format {%s}", fmt);
|
---|
| 741 | }
|
---|
| 742 | for (savep = ++p; *p != '"';) {
|
---|
| 743 | if (*p++ == 0) {
|
---|
| 744 | bb_error_msg_and_die("bad format {%s}", fmt);
|
---|
| 745 | }
|
---|
| 746 | }
|
---|
| 747 | tfu->fmt = xmalloc(p - savep + 1);
|
---|
| 748 | strncpy(tfu->fmt, savep, p - savep);
|
---|
| 749 | tfu->fmt[p - savep] = '\0';
|
---|
| 750 | /* escape(tfu->fmt); */
|
---|
| 751 |
|
---|
| 752 | p1 = tfu->fmt;
|
---|
| 753 |
|
---|
| 754 | /* alphabetic escape sequences have to be done in place */
|
---|
| 755 | for (p2 = p1;; ++p1, ++p2) {
|
---|
| 756 | if (!*p1) {
|
---|
| 757 | *p2 = *p1;
|
---|
| 758 | break;
|
---|
| 759 | }
|
---|
| 760 | if (*p1 == '\\') {
|
---|
| 761 | const char *cs = conv_str + 4;
|
---|
| 762 | ++p1;
|
---|
| 763 | *p2 = *p1;
|
---|
| 764 | do {
|
---|
| 765 | if (*p1 == cs[2]) {
|
---|
| 766 | *p2 = cs[0];
|
---|
| 767 | break;
|
---|
| 768 | }
|
---|
| 769 | cs += 4;
|
---|
| 770 | } while (*cs);
|
---|
| 771 | }
|
---|
| 772 | }
|
---|
| 773 |
|
---|
| 774 | p++;
|
---|
| 775 | }
|
---|
| 776 | }
|
---|
| 777 |
|
---|
| 778 | /*
|
---|
| 779 | * Copyright (c) 1989 The Regents of the University of California.
|
---|
| 780 | * All rights reserved.
|
---|
| 781 | *
|
---|
| 782 | * Redistribution and use in source and binary forms, with or without
|
---|
| 783 | * modification, are permitted provided that the following conditions
|
---|
| 784 | * are met:
|
---|
| 785 | * 1. Redistributions of source code must retain the above copyright
|
---|
| 786 | * notice, this list of conditions and the following disclaimer.
|
---|
| 787 | * 2. Redistributions in binary form must reproduce the above copyright
|
---|
| 788 | * notice, this list of conditions and the following disclaimer in the
|
---|
| 789 | * documentation and/or other materials provided with the distribution.
|
---|
| 790 | * 3. Neither the name of the University nor the names of its contributors
|
---|
| 791 | * may be used to endorse or promote products derived from this software
|
---|
| 792 | * without specific prior written permission.
|
---|
| 793 | *
|
---|
| 794 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
---|
| 795 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
---|
| 796 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
---|
| 797 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
---|
| 798 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
---|
| 799 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
---|
| 800 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
---|
| 801 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
---|
| 802 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
---|
| 803 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
---|
| 804 | * SUCH DAMAGE.
|
---|
| 805 | */
|
---|