8a16b7a18f
Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
441 lines
9.3 KiB
C
441 lines
9.3 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)odsyntax.c 8.2 (Berkeley) 5/4/95";
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#endif
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#endif /* not lint */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <float.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "hexdump.h"
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#define PADDING " "
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int odmode;
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static void odadd(const char *);
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static void odformat(const char *);
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static const char *odformatfp(char, const char *);
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static const char *odformatint(char, const char *);
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static void odoffset(int, char ***);
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static void odusage(void);
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void
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oldsyntax(int argc, char ***argvp)
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{
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static char empty[] = "", padding[] = PADDING;
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int ch;
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char **argv, *end;
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/* Add initial (default) address format. -A may change it later. */
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#define TYPE_OFFSET 7
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add("\"%07.7_Ao\n\"");
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add("\"%07.7_ao \"");
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odmode = 1;
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argv = *argvp;
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while ((ch = getopt(argc, argv, "A:aBbcDdeFfHhIij:LlN:Oost:vXx")) != -1)
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switch (ch) {
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case 'A':
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switch (*optarg) {
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case 'd': case 'o': case 'x':
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fshead->nextfu->fmt[TYPE_OFFSET] = *optarg;
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fshead->nextfs->nextfu->fmt[TYPE_OFFSET] =
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*optarg;
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break;
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case 'n':
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fshead->nextfu->fmt = empty;
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fshead->nextfs->nextfu->fmt = padding;
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break;
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default:
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errx(1, "%s: invalid address base", optarg);
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}
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break;
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case 'a':
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odformat("a");
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break;
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case 'B':
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case 'o':
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odformat("o2");
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break;
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case 'b':
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odformat("o1");
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break;
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case 'c':
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odformat("c");
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break;
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case 'd':
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odformat("u2");
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break;
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case 'D':
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odformat("u4");
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break;
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case 'e': /* undocumented in od */
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case 'F':
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odformat("fD");
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break;
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case 'f':
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odformat("fF");
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break;
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case 'H':
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case 'X':
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odformat("x4");
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break;
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case 'h':
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case 'x':
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odformat("x2");
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break;
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case 'I':
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case 'L':
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case 'l':
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odformat("dL");
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break;
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case 'i':
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odformat("dI");
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break;
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case 'j':
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errno = 0;
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skip = strtoll(optarg, &end, 0);
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if (*end == 'b')
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skip *= 512;
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else if (*end == 'k')
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skip *= 1024;
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else if (*end == 'm')
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skip *= 1048576L;
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if (errno != 0 || skip < 0 || strlen(end) > 1)
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errx(1, "%s: invalid skip amount", optarg);
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break;
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case 'N':
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if ((length = atoi(optarg)) <= 0)
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errx(1, "%s: invalid length", optarg);
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break;
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case 'O':
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odformat("o4");
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break;
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case 's':
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odformat("d2");
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break;
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case 't':
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odformat(optarg);
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break;
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case 'v':
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vflag = ALL;
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break;
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case '?':
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default:
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odusage();
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}
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if (fshead->nextfs->nextfs == NULL)
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odformat("oS");
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argc -= optind;
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*argvp += optind;
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if (argc)
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odoffset(argc, argvp);
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}
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static void
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odusage(void)
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{
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fprintf(stderr,
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"usage: od [-aBbcDdeFfHhIiLlOosvXx] [-A base] [-j skip] [-N length] [-t type]\n");
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fprintf(stderr,
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" [[+]offset[.][Bb]] [file ...]\n");
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exit(1);
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}
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static void
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odoffset(int argc, char ***argvp)
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{
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char *p, *num, *end;
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int base;
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/*
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* The offset syntax of od(1) was genuinely bizarre. First, if
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* it started with a plus it had to be an offset. Otherwise, if
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* there were at least two arguments, a number or lower-case 'x'
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* followed by a number makes it an offset. By default it was
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* octal; if it started with 'x' or '0x' it was hex. If it ended
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* in a '.', it was decimal. If a 'b' or 'B' was appended, it
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* multiplied the number by 512 or 1024 byte units. There was
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* no way to assign a block count to a hex offset.
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*
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* We assume it's a file if the offset is bad.
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*/
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p = argc == 1 ? (*argvp)[0] : (*argvp)[1];
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if (*p != '+' && (argc < 2 ||
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(!isdigit(p[0]) && (p[0] != 'x' || !isxdigit(p[1])))))
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return;
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base = 0;
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/*
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* skip over leading '+', 'x[0-9a-fA-f]' or '0x', and
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* set base.
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*/
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if (p[0] == '+')
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++p;
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if (p[0] == 'x' && isxdigit(p[1])) {
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++p;
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base = 16;
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} else if (p[0] == '0' && p[1] == 'x') {
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p += 2;
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base = 16;
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}
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/* skip over the number */
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if (base == 16)
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for (num = p; isxdigit(*p); ++p);
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else
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for (num = p; isdigit(*p); ++p);
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/* check for no number */
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if (num == p)
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return;
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/* if terminates with a '.', base is decimal */
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if (*p == '.') {
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if (base)
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return;
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base = 10;
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}
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skip = strtoll(num, &end, base ? base : 8);
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/* if end isn't the same as p, we got a non-octal digit */
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if (end != p) {
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skip = 0;
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return;
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}
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if (*p) {
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if (*p == 'B') {
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skip *= 1024;
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++p;
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} else if (*p == 'b') {
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skip *= 512;
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++p;
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}
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}
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if (*p) {
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skip = 0;
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return;
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}
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/*
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* If the offset uses a non-octal base, the base of the offset
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* is changed as well. This isn't pretty, but it's easy.
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*/
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if (base == 16) {
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fshead->nextfu->fmt[TYPE_OFFSET] = 'x';
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fshead->nextfs->nextfu->fmt[TYPE_OFFSET] = 'x';
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} else if (base == 10) {
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fshead->nextfu->fmt[TYPE_OFFSET] = 'd';
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fshead->nextfs->nextfu->fmt[TYPE_OFFSET] = 'd';
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}
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/* Terminate file list. */
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(*argvp)[1] = NULL;
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}
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static void
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odformat(const char *fmt)
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{
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char fchar;
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while (*fmt != '\0') {
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switch ((fchar = *fmt++)) {
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case 'a':
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odadd("16/1 \"%3_u \" \"\\n\"");
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break;
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case 'c':
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odadd("16/1 \"%3_c \" \"\\n\"");
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break;
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case 'o': case 'u': case 'd': case 'x':
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fmt = odformatint(fchar, fmt);
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break;
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case 'f':
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fmt = odformatfp(fchar, fmt);
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break;
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default:
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errx(1, "%c: unrecognised format character", fchar);
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}
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}
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}
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static const char *
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odformatfp(char fchar __unused, const char *fmt)
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{
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size_t isize;
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int digits;
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char *end, *hdfmt;
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isize = sizeof(double);
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switch (*fmt) {
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case 'F':
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isize = sizeof(float);
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fmt++;
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break;
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case 'D':
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isize = sizeof(double);
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fmt++;
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break;
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case 'L':
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isize = sizeof(long double);
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fmt++;
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break;
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default:
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if (isdigit((unsigned char)*fmt)) {
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errno = 0;
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isize = (size_t)strtoul(fmt, &end, 10);
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if (errno != 0 || isize == 0)
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errx(1, "%s: invalid size", fmt);
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fmt = (const char *)end;
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}
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}
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switch (isize) {
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case sizeof(float):
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digits = FLT_DIG;
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break;
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case sizeof(double):
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digits = DBL_DIG;
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break;
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default:
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if (isize == sizeof(long double))
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digits = LDBL_DIG;
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else
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errx(1, "unsupported floating point size %lu",
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(u_long)isize);
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}
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asprintf(&hdfmt, "%lu/%lu \" %%%d.%de \" \"\\n\"",
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16UL / (u_long)isize, (u_long)isize, digits + 8, digits);
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if (hdfmt == NULL)
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err(1, NULL);
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odadd(hdfmt);
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free(hdfmt);
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return (fmt);
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}
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static const char *
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odformatint(char fchar, const char *fmt)
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{
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unsigned long long n;
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size_t isize;
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int digits;
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char *end, *hdfmt;
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isize = sizeof(int);
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switch (*fmt) {
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case 'C':
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isize = sizeof(char);
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fmt++;
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break;
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case 'I':
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isize = sizeof(int);
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fmt++;
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break;
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case 'L':
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isize = sizeof(long);
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fmt++;
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break;
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case 'S':
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isize = sizeof(short);
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fmt++;
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break;
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default:
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if (isdigit((unsigned char)*fmt)) {
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errno = 0;
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isize = (size_t)strtoul(fmt, &end, 10);
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if (errno != 0 || isize == 0)
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errx(1, "%s: invalid size", fmt);
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if (isize != sizeof(char) && isize != sizeof(short) &&
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isize != sizeof(int) && isize != sizeof(long))
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errx(1, "unsupported int size %lu",
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(u_long)isize);
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fmt = (const char *)end;
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}
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}
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/*
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* Calculate the maximum number of digits we need to
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* fit the number. Overestimate for decimal with log
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* base 8. We need one extra space for signed numbers
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* to store the sign.
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*/
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n = (1ULL << (8 * isize)) - 1;
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digits = 0;
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while (n != 0) {
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digits++;
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n >>= (fchar == 'x') ? 4 : 3;
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}
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if (fchar == 'd')
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digits++;
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asprintf(&hdfmt, "%lu/%lu \"%*s%%%s%d%c\" \"\\n\"",
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16UL / (u_long)isize, (u_long)isize, (int)(4 * isize - digits),
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"", (fchar == 'd' || fchar == 'u') ? "" : "0", digits, fchar);
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if (hdfmt == NULL)
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err(1, NULL);
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odadd(hdfmt);
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free(hdfmt);
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return (fmt);
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}
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static void
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odadd(const char *fmt)
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{
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static int needpad;
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if (needpad)
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add("\""PADDING"\"");
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add(fmt);
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needpad = 1;
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}
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