mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-19 10:53:58 +00:00
Use the vendor's 2.12.0_snap vendor version of this file as in rev 1.5.
This commit is contained in:
David E. O'Brien
parent
eb18cc2ed5
commit
04f0ba0a6c
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=89865
@ -1,6 +1,6 @@
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/* strings -- print the strings of printable characters in files
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Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000
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Free Software Foundation, Inc.
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Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
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2002 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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@ -41,6 +41,11 @@
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-o Like -to. (Some other implementations have -o like -to,
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others like -td. We chose one arbitrarily.)
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--encoding={s,b,l,B,L}
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-e {s,b,l,B,L}
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Select character encoding: single-byte, bigendian 16-bit,
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littleendian 16-bit, bigendian 32-bit, littleendian 32-bit
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--target=BFDNAME
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Specify a non-default object file format.
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@ -53,13 +58,16 @@
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Written by Richard Stallman <rms@gnu.ai.mit.edu>
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and David MacKenzie <djm@gnu.ai.mit.edu>. */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "bfd.h"
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#include <stdio.h>
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#include <getopt.h>
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#include <ctype.h>
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#include <errno.h>
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#include "bucomm.h"
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#include "libiberty.h"
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#include "safe-ctype.h"
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/* Some platforms need to put stdin into binary mode, to read
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binary files. */
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@ -78,14 +86,7 @@
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#endif
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#endif
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/* Not all printable characters have ASCII codes (depending upon the
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LOCALE set) but on some older systems it is not safe to test isprint
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without first testing isascii... */
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#if defined isascii && !defined HAVE_LOCALE_H
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#define isgraphic(c) (isascii (c) && (isprint (c) || (c) == '\t'))
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#else
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#define isgraphic(c) (isprint (c) || (c) == '\t')
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#endif
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#define isgraphic(c) (ISPRINT (c) || (c) == '\t')
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#ifndef errno
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extern int errno;
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@ -94,6 +95,14 @@ extern int errno;
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/* The BFD section flags that identify an initialized data section. */
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#define DATA_FLAGS (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS)
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#ifdef HAVE_FOPEN64
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typedef off64_t file_off;
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#define file_open(s,m) fopen64(s,m)
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#else
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typedef off_t file_off;
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#define file_open(s,m) fopen(s,m)
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#endif
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/* Radix for printing addresses (must be 8, 10 or 16). */
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static int address_radix;
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@ -115,12 +124,17 @@ static boolean got_a_section;
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/* The BFD object file format. */
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static char *target;
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/* The character encoding format. */
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static char encoding;
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static int encoding_bytes;
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static struct option long_options[] =
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{
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{"all", no_argument, NULL, 'a'},
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{"print-file-name", no_argument, NULL, 'f'},
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{"bytes", required_argument, NULL, 'n'},
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{"radix", required_argument, NULL, 't'},
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{"encoding", required_argument, NULL, 'e'},
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{"target", required_argument, NULL, 'T'},
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{"help", no_argument, NULL, 'h'},
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{"version", no_argument, NULL, 'v'},
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@ -132,10 +146,14 @@ static boolean strings_object_file PARAMS ((const char *));
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static boolean strings_file PARAMS ((char *file));
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static int integer_arg PARAMS ((char *s));
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static void print_strings PARAMS ((const char *filename, FILE *stream,
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file_ptr address, int stop_point,
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file_off address, int stop_point,
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int magiccount, char *magic));
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static void usage PARAMS ((FILE *stream, int status));
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static long get_char PARAMS ((FILE *stream, file_off *address,
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int *magiccount, char **magic));
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int main PARAMS ((int, char **));
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int
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main (argc, argv)
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int argc;
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@ -145,7 +163,7 @@ main (argc, argv)
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int exit_status = 0;
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boolean files_given = false;
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#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
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#if defined (HAVE_SETLOCALE)
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setlocale (LC_ALL, "");
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#endif
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bindtextdomain (PACKAGE, LOCALEDIR);
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@ -158,8 +176,9 @@ main (argc, argv)
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print_filenames = false;
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datasection_only = true;
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target = NULL;
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encoding = 's';
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while ((optc = getopt_long (argc, argv, "afn:ot:v0123456789",
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while ((optc = getopt_long (argc, argv, "afhHn:ot:e:Vv0123456789",
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long_options, (int *) 0)) != EOF)
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{
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switch (optc)
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@ -172,6 +191,7 @@ main (argc, argv)
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print_filenames = true;
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break;
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case 'H':
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case 'h':
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usage (stdout, 0);
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@ -215,6 +235,13 @@ main (argc, argv)
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target = optarg;
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break;
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case 'e':
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if (optarg[1] != '\0')
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usage (stderr, 1);
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encoding = optarg[0];
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break;
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case 'V':
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case 'v':
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print_version ("strings");
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break;
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@ -234,6 +261,23 @@ main (argc, argv)
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if (string_min < 0)
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string_min = 4;
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switch (encoding)
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{
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case 's':
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encoding_bytes = 1;
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break;
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case 'b':
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case 'l':
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encoding_bytes = 2;
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break;
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case 'B':
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case 'L':
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encoding_bytes = 4;
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break;
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default:
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usage (stderr, 1);
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}
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bfd_init ();
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set_default_bfd_target ();
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@ -344,10 +388,7 @@ strings_file (file)
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{
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FILE *stream;
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stream = fopen (file, "rb");
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/* Not all systems permit "rb", so try "r" if it failed. */
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if (stream == NULL)
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stream = fopen (file, "r");
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stream = file_open (file, FOPEN_RB);
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if (stream == NULL)
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{
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fprintf (stderr, "%s: ", program_name);
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@ -355,7 +396,7 @@ strings_file (file)
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return false;
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}
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print_strings (file, stream, (file_ptr) 0, 0, 0, (char *) 0);
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print_strings (file, stream, (file_off) 0, 0, 0, (char *) 0);
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if (fclose (stream) == EOF)
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{
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@ -368,6 +409,78 @@ strings_file (file)
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return true;
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}
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/* Read the next character, return EOF if none available.
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Assume that STREAM is positioned so that the next byte read
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is at address ADDRESS in the file.
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If STREAM is NULL, do not read from it.
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The caller can supply a buffer of characters
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to be processed before the data in STREAM.
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MAGIC is the address of the buffer and
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MAGICCOUNT is how many characters are in it. */
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static long
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get_char (stream, address, magiccount, magic)
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FILE *stream;
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file_off *address;
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int *magiccount;
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char **magic;
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{
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int c, i;
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long r = EOF;
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unsigned char buf[4];
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for (i = 0; i < encoding_bytes; i++)
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{
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if (*magiccount)
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{
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(*magiccount)--;
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c = *(*magic)++;
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}
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else
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{
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if (stream == NULL)
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return EOF;
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#ifdef HAVE_GETC_UNLOCKED
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c = getc_unlocked (stream);
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#else
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c = getc (stream);
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#endif
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if (c == EOF)
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return EOF;
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}
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(*address)++;
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buf[i] = c;
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}
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switch (encoding)
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{
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case 's':
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r = buf[0];
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break;
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case 'b':
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r = (buf[0] << 8) | buf[1];
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break;
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case 'l':
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r = buf[0] | (buf[1] << 8);
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break;
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case 'B':
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r = ((long) buf[0] << 24) | ((long) buf[1] << 16) |
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((long) buf[2] << 8) | buf[3];
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break;
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case 'L':
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r = buf[0] | ((long) buf[1] << 8) | ((long) buf[2] << 16) |
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((long) buf[3] << 24);
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break;
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}
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if (r == EOF)
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return 0;
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return r;
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}
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/* Find the strings in file FILENAME, read from STREAM.
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Assume that STREAM is positioned so that the next byte read
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is at address ADDRESS in the file.
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@ -384,18 +497,18 @@ static void
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print_strings (filename, stream, address, stop_point, magiccount, magic)
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const char *filename;
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FILE *stream;
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file_ptr address;
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file_off address;
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int stop_point;
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int magiccount;
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char *magic;
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{
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char *buf = (char *) xmalloc (string_min + 1);
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char *buf = (char *) xmalloc (sizeof (char) * (string_min + 1));
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while (1)
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{
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file_ptr start;
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file_off start;
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int i;
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int c;
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long c;
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/* See if the next `string_min' chars are all graphic chars. */
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tryline:
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@ -404,21 +517,10 @@ print_strings (filename, stream, address, stop_point, magiccount, magic)
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start = address;
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for (i = 0; i < string_min; i++)
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{
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if (magiccount)
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{
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magiccount--;
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c = *magic++;
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}
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else
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{
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if (stream == NULL)
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return;
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c = getc (stream);
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if (c == EOF)
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return;
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}
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address++;
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if (!isgraphic (c))
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c = get_char (stream, &address, &magiccount, &magic);
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if (c == EOF)
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return;
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if (c > 255 || c < 0 || !isgraphic (c))
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/* Found a non-graphic. Try again starting with next char. */
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goto tryline;
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buf[i] = c;
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@ -433,15 +535,48 @@ print_strings (filename, stream, address, stop_point, magiccount, magic)
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switch (address_radix)
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{
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case 8:
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printf ("%7lo ", (unsigned long) start);
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#if __STDC_VERSION__ >= 199901L || (defined(__GNUC__) && __GNUC__ >= 2)
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if (sizeof (start) > sizeof (long))
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printf ("%7Lo ", (unsigned long long) start);
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else
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#else
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# if !BFD_HOST_64BIT_LONG
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if (start != (unsigned long) start)
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printf ("++%7lo ", (unsigned long) start);
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else
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# endif
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#endif
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printf ("%7lo ", (unsigned long) start);
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break;
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case 10:
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printf ("%7ld ", (long) start);
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#if __STDC_VERSION__ >= 199901L || (defined(__GNUC__) && __GNUC__ >= 2)
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if (sizeof (start) > sizeof (long))
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printf ("%7Ld ", (unsigned long long) start);
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else
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#else
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# if !BFD_HOST_64BIT_LONG
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if (start != (unsigned long) start)
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printf ("++%7ld ", (unsigned long) start);
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else
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# endif
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#endif
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printf ("%7ld ", (long) start);
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break;
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case 16:
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printf ("%7lx ", (unsigned long) start);
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#if __STDC_VERSION__ >= 199901L || (defined(__GNUC__) && __GNUC__ >= 2)
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if (sizeof (start) > sizeof (long))
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printf ("%7Lx ", (unsigned long long) start);
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else
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#else
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# if !BFD_HOST_64BIT_LONG
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if (start != (unsigned long) start)
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printf ("%lx%8.8lx ", start >> 32, start & 0xffffffff);
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else
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# endif
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#endif
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printf ("%7lx ", (unsigned long) start);
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break;
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}
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@ -450,21 +585,10 @@ print_strings (filename, stream, address, stop_point, magiccount, magic)
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while (1)
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{
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if (magiccount)
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{
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magiccount--;
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c = *magic++;
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}
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else
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{
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if (stream == NULL)
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break;
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c = getc (stream);
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if (c == EOF)
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break;
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}
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address++;
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if (! isgraphic (c))
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c = get_char (stream, &address, &magiccount, &magic);
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if (c == EOF)
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break;
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if (c > 255 || c < 0 || !isgraphic (c))
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break;
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putchar (c);
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}
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@ -525,11 +649,20 @@ usage (stream, status)
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FILE *stream;
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int status;
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{
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fprintf (stream, _("\
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Usage: %s [-afov] [-n min-len] [-min-len] [-t {o,x,d}] [-]\n\
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[--all] [--print-file-name] [--bytes=min-len] [--radix={o,x,d}]\n\
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[--target=bfdname] [--help] [--version] file...\n"),
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program_name);
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fprintf (stream, _("Usage: %s [option(s)] [file(s)]\n"), program_name);
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fprintf (stream, _(" Display printable strings in [file(s)] (stdin by default)\n"));
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fprintf (stream, _(" The options are:\n\
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-a - --all Scan the entire file, not just the data section\n\
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-f --print-file-name Print the name of the file before each string\n\
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-n --bytes=[number] Locate & print any NUL-terminated sequence of at\n\
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-<number> least [number] characters (default 4).\n\
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-t --radix={o,x,d} Print the location of the string in base 8, 10 or 16\n\
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-o An alias for --radix=o\n\
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-T --target=<BFDNAME> Specify the binary file format\n\
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-e --encoding={s,b,l,B,L} Select character size and endianness:\n\
|
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s = 8-bit, {b,l} = 16-bit, {B,L} = 32-bit\n\
|
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-h --help Display this information\n\
|
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-v --version Print the program's version number\n"));
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list_supported_targets (program_name, stream);
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if (status == 0)
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fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
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