/* strings -- print the strings of printable characters in files
- Copyright (C) 1993, 94, 95, 96, 97, 98, 99, 2000
- Free Software Foundation, Inc.
+ Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
+ 2002 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-o Like -to. (Some other implementations have -o like -to,
others like -td. We chose one arbitrarily.)
+ --encoding={s,S,b,l,B,L}
+ -e {s,S,b,l,B,L}
+ Select character encoding: 7-bit-character, 8-bit-character,
+ bigendian 16-bit, littleendian 16-bit, bigendian 32-bit,
+ littleendian 32-bit.
+
--target=BFDNAME
Specify a non-default object file format.
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
#include "bfd.h"
#include <stdio.h>
-#include <getopt.h>
-#include <ctype.h>
+#include "getopt.h"
#include <errno.h>
#include "bucomm.h"
#include "libiberty.h"
-
-#ifdef isascii
-#define isgraphic(c) (isascii (c) && isprint (c))
+#include "safe-ctype.h"
+
+/* Some platforms need to put stdin into binary mode, to read
+ binary files. */
+#ifdef HAVE_SETMODE
+#ifndef O_BINARY
+#ifdef _O_BINARY
+#define O_BINARY _O_BINARY
+#define setmode _setmode
#else
-#define isgraphic(c) (isprint (c))
+#define O_BINARY 0
+#endif
+#endif
+#if O_BINARY
+#include <io.h>
+#define SET_BINARY(f) do { if (!isatty (f)) setmode (f,O_BINARY); } while (0)
#endif
+#endif
+
+#define STRING_ISGRAPHIC(c) \
+ ( (c) >= 0 \
+ && (c) <= 255 \
+ && ((c) == '\t' || ISPRINT (c) || (encoding == 'S' && (c) > 127)))
#ifndef errno
extern int errno;
/* The BFD section flags that identify an initialized data section. */
#define DATA_FLAGS (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS)
+#ifdef HAVE_FOPEN64
+typedef off64_t file_off;
+#define file_open(s,m) fopen64(s, m)
+#else
+typedef off_t file_off;
+#define file_open(s,m) fopen(s, m)
+#endif
+
/* Radix for printing addresses (must be 8, 10 or 16). */
static int address_radix;
/* Minimum length of sequence of graphic chars to trigger output. */
static int string_min;
-/* true means print address within file for each string. */
-static boolean print_addresses;
+/* TRUE means print address within file for each string. */
+static bfd_boolean print_addresses;
-/* true means print filename for each string. */
-static boolean print_filenames;
+/* TRUE means print filename for each string. */
+static bfd_boolean print_filenames;
-/* true means for object files scan only the data section. */
-static boolean datasection_only;
+/* TRUE means for object files scan only the data section. */
+static bfd_boolean datasection_only;
-/* true if we found an initialized data section in the current file. */
-static boolean got_a_section;
+/* TRUE if we found an initialized data section in the current file. */
+static bfd_boolean got_a_section;
/* The BFD object file format. */
static char *target;
+/* The character encoding format. */
+static char encoding;
+static int encoding_bytes;
+
static struct option long_options[] =
{
{"all", no_argument, NULL, 'a'},
{"print-file-name", no_argument, NULL, 'f'},
{"bytes", required_argument, NULL, 'n'},
{"radix", required_argument, NULL, 't'},
+ {"encoding", required_argument, NULL, 'e'},
{"target", required_argument, NULL, 'T'},
{"help", no_argument, NULL, 'h'},
{"version", no_argument, NULL, 'v'},
{NULL, 0, NULL, 0}
};
-static void strings_a_section PARAMS ((bfd *, asection *, PTR));
-static boolean strings_object_file PARAMS ((const char *));
-static boolean strings_file PARAMS ((char *file));
-static int integer_arg PARAMS ((char *s));
-static void print_strings PARAMS ((const char *filename, FILE *stream,
- file_ptr address, int stop_point,
- int magiccount, char *magic));
-static void usage PARAMS ((FILE *stream, int status));
+static void strings_a_section
+ PARAMS ((bfd *, asection *, PTR));
+static bfd_boolean strings_object_file
+ PARAMS ((const char *));
+static bfd_boolean strings_file
+ PARAMS ((char *file));
+static int integer_arg
+ PARAMS ((char *s));
+static void print_strings
+ PARAMS ((const char *, FILE *, file_off, int, int, char *));
+static void usage
+ PARAMS ((FILE *, int));
+static long get_char
+ PARAMS ((FILE *, file_off *, int *, char **));
\f
+int main
+ PARAMS ((int, char **));
+
int
main (argc, argv)
int argc;
{
int optc;
int exit_status = 0;
- boolean files_given = false;
+ bfd_boolean files_given = FALSE;
-#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
- setlocale (LC_MESSAGES, "");
+#if defined (HAVE_SETLOCALE)
+ setlocale (LC_ALL, "");
#endif
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
program_name = argv[0];
xmalloc_set_program_name (program_name);
string_min = -1;
- print_addresses = false;
- print_filenames = false;
- datasection_only = true;
+ print_addresses = FALSE;
+ print_filenames = FALSE;
+ datasection_only = TRUE;
target = NULL;
+ encoding = 's';
- while ((optc = getopt_long (argc, argv, "afn:ot:v0123456789",
+ while ((optc = getopt_long (argc, argv, "afhHn:ot:e:Vv0123456789",
long_options, (int *) 0)) != EOF)
{
switch (optc)
{
case 'a':
- datasection_only = false;
+ datasection_only = FALSE;
break;
case 'f':
- print_filenames = true;
+ print_filenames = TRUE;
break;
+ case 'H':
case 'h':
usage (stdout, 0);
case 'n':
string_min = integer_arg (optarg);
if (string_min < 1)
- {
- fatal (_("invalid number %s"), optarg);
- }
+ fatal (_("invalid number %s"), optarg);
break;
case 'o':
- print_addresses = true;
+ print_addresses = TRUE;
address_radix = 8;
break;
case 't':
- print_addresses = true;
+ print_addresses = TRUE;
if (optarg[1] != '\0')
usage (stderr, 1);
switch (optarg[0])
target = optarg;
break;
+ case 'e':
+ if (optarg[1] != '\0')
+ usage (stderr, 1);
+ encoding = optarg[0];
+ break;
+
+ case 'V':
case 'v':
print_version ("strings");
break;
if (string_min < 0)
string_min = 4;
+ switch (encoding)
+ {
+ case 'S':
+ case 's':
+ encoding_bytes = 1;
+ break;
+ case 'b':
+ case 'l':
+ encoding_bytes = 2;
+ break;
+ case 'B':
+ case 'L':
+ encoding_bytes = 4;
+ break;
+ default:
+ usage (stderr, 1);
+ }
+
bfd_init ();
set_default_bfd_target ();
if (optind >= argc)
{
- datasection_only = false;
+ datasection_only = FALSE;
+#ifdef SET_BINARY
+ SET_BINARY (fileno (stdin));
+#endif
print_strings ("{standard input}", stdin, 0, 0, 0, (char *) NULL);
- files_given = true;
+ files_given = TRUE;
}
else
{
for (; optind < argc; ++optind)
{
if (strcmp (argv[optind], "-") == 0)
- datasection_only = false;
+ datasection_only = FALSE;
else
{
- files_given = true;
- exit_status |= (strings_file (argv[optind]) == false);
+ files_given = TRUE;
+ exit_status |= strings_file (argv[optind]) == FALSE;
}
}
}
- if (files_given == false)
+ if (!files_given)
usage (stderr, 1);
return (exit_status);
{
bfd_size_type sz = bfd_get_section_size_before_reloc (sect);
PTR mem = xmalloc (sz);
+
if (bfd_get_section_contents (abfd, sect, mem, (file_ptr) 0, sz))
{
- got_a_section = true;
+ got_a_section = TRUE;
print_strings (file, (FILE *) NULL, sect->filepos, 0, sz, mem);
}
free (mem);
/* Scan all of the sections in FILE, and print the strings
in the initialized data section(s).
- Return true if successful,
- false if not (such as if FILE is not an object file). */
+ Return TRUE if successful,
+ FALSE if not (such as if FILE is not an object file). */
-static boolean
+static bfd_boolean
strings_object_file (file)
const char *file;
{
bfd *abfd = bfd_openr (file, target);
if (abfd == NULL)
- {
- /* Treat the file as a non-object file. */
- return false;
- }
+ /* Treat the file as a non-object file. */
+ return FALSE;
/* This call is mainly for its side effect of reading in the sections.
We follow the traditional behavior of `strings' in that we don't
complain if we don't recognize a file to be an object file. */
- if (bfd_check_format (abfd, bfd_object) == false)
+ if (!bfd_check_format (abfd, bfd_object))
{
bfd_close (abfd);
- return false;
+ return FALSE;
}
- got_a_section = false;
+ got_a_section = FALSE;
bfd_map_over_sections (abfd, strings_a_section, (PTR) file);
if (!bfd_close (abfd))
{
bfd_nonfatal (file);
- return false;
+ return FALSE;
}
return got_a_section;
}
-/* Print the strings in FILE. Return true if ok, false if an error occurs. */
+/* Print the strings in FILE. Return TRUE if ok, FALSE if an error occurs. */
-static boolean
+static bfd_boolean
strings_file (file)
char *file;
{
{
FILE *stream;
- stream = fopen (file, "rb");
- /* Not all systems permit "rb", so try "r" if it failed. */
- if (stream == NULL)
- stream = fopen (file, "r");
+ stream = file_open (file, FOPEN_RB);
if (stream == NULL)
{
fprintf (stderr, "%s: ", program_name);
perror (file);
- return false;
+ return FALSE;
}
- print_strings (file, stream, (file_ptr) 0, 0, 0, (char *) 0);
+ print_strings (file, stream, (file_off) 0, 0, 0, (char *) 0);
if (fclose (stream) == EOF)
{
fprintf (stderr, "%s: ", program_name);
perror (file);
- return false;
+ return FALSE;
+ }
+ }
+
+ return TRUE;
+}
+\f
+/* Read the next character, return EOF if none available.
+ Assume that STREAM is positioned so that the next byte read
+ is at address ADDRESS in the file.
+
+ If STREAM is NULL, do not read from it.
+ The caller can supply a buffer of characters
+ to be processed before the data in STREAM.
+ MAGIC is the address of the buffer and
+ MAGICCOUNT is how many characters are in it. */
+
+static long
+get_char (stream, address, magiccount, magic)
+ FILE *stream;
+ file_off *address;
+ int *magiccount;
+ char **magic;
+{
+ int c, i;
+ long r = EOF;
+ unsigned char buf[4];
+
+ for (i = 0; i < encoding_bytes; i++)
+ {
+ if (*magiccount)
+ {
+ (*magiccount)--;
+ c = *(*magic)++;
}
+ else
+ {
+ if (stream == NULL)
+ return EOF;
+#ifdef HAVE_GETC_UNLOCKED
+ c = getc_unlocked (stream);
+#else
+ c = getc (stream);
+#endif
+ if (c == EOF)
+ return EOF;
+ }
+
+ (*address)++;
+ buf[i] = c;
}
- return true;
+ switch (encoding)
+ {
+ case 'S':
+ case 's':
+ r = buf[0];
+ break;
+ case 'b':
+ r = (buf[0] << 8) | buf[1];
+ break;
+ case 'l':
+ r = buf[0] | (buf[1] << 8);
+ break;
+ case 'B':
+ r = ((long) buf[0] << 24) | ((long) buf[1] << 16) |
+ ((long) buf[2] << 8) | buf[3];
+ break;
+ case 'L':
+ r = buf[0] | ((long) buf[1] << 8) | ((long) buf[2] << 16) |
+ ((long) buf[3] << 24);
+ break;
+ }
+
+ if (r == EOF)
+ return 0;
+
+ return r;
}
\f
/* Find the strings in file FILENAME, read from STREAM.
print_strings (filename, stream, address, stop_point, magiccount, magic)
const char *filename;
FILE *stream;
- file_ptr address;
+ file_off address;
int stop_point;
int magiccount;
char *magic;
{
- char *buf = (char *) xmalloc (string_min + 1);
+ char *buf = (char *) xmalloc (sizeof (char) * (string_min + 1));
while (1)
{
- file_ptr start;
+ file_off start;
int i;
- int c;
+ long c;
/* See if the next `string_min' chars are all graphic chars. */
tryline:
start = address;
for (i = 0; i < string_min; i++)
{
- if (magiccount)
- {
- magiccount--;
- c = *magic++;
- }
- else
- {
- if (stream == NULL)
- return;
- c = getc (stream);
- if (c == EOF)
- return;
- }
- address++;
- if (!isgraphic (c))
+ c = get_char (stream, &address, &magiccount, &magic);
+ if (c == EOF)
+ return;
+ if (! STRING_ISGRAPHIC (c))
/* Found a non-graphic. Try again starting with next char. */
goto tryline;
buf[i] = c;
switch (address_radix)
{
case 8:
- printf ("%7lo ", (unsigned long) start);
+#if __STDC_VERSION__ >= 199901L || (defined(__GNUC__) && __GNUC__ >= 2)
+ if (sizeof (start) > sizeof (long))
+ printf ("%7Lo ", (unsigned long long) start);
+ else
+#else
+# if !BFD_HOST_64BIT_LONG
+ if (start != (unsigned long) start)
+ printf ("++%7lo ", (unsigned long) start);
+ else
+# endif
+#endif
+ printf ("%7lo ", (unsigned long) start);
break;
case 10:
- printf ("%7ld ", (long) start);
+#if __STDC_VERSION__ >= 199901L || (defined(__GNUC__) && __GNUC__ >= 2)
+ if (sizeof (start) > sizeof (long))
+ printf ("%7Ld ", (unsigned long long) start);
+ else
+#else
+# if !BFD_HOST_64BIT_LONG
+ if (start != (unsigned long) start)
+ printf ("++%7ld ", (unsigned long) start);
+ else
+# endif
+#endif
+ printf ("%7ld ", (long) start);
break;
case 16:
- printf ("%7lx ", (unsigned long) start);
+#if __STDC_VERSION__ >= 199901L || (defined(__GNUC__) && __GNUC__ >= 2)
+ if (sizeof (start) > sizeof (long))
+ printf ("%7Lx ", (unsigned long long) start);
+ else
+#else
+# if !BFD_HOST_64BIT_LONG
+ if (start != (unsigned long) start)
+ printf ("%lx%8.8lx ", start >> 32, start & 0xffffffff);
+ else
+# endif
+#endif
+ printf ("%7lx ", (unsigned long) start);
break;
}
while (1)
{
- if (magiccount)
- {
- magiccount--;
- c = *magic++;
- }
- else
- {
- if (stream == NULL)
- break;
- c = getc (stream);
- if (c == EOF)
- break;
- }
- address++;
- if (! isgraphic (c))
+ c = get_char (stream, &address, &magiccount, &magic);
+ if (c == EOF)
+ break;
+ if (! STRING_ISGRAPHIC (c))
break;
putchar (c);
}
p--;
if (*p)
- {
- fatal (_("invalid integer argument %s"), s);
- }
+ fatal (_("invalid integer argument %s"), s);
+
return value;
}
FILE *stream;
int status;
{
- fprintf (stream, _("\
-Usage: %s [-afov] [-n min-len] [-min-len] [-t {o,x,d}] [-]\n\
- [--all] [--print-file-name] [--bytes=min-len] [--radix={o,x,d}]\n\
- [--target=bfdname] [--help] [--version] file...\n"),
- program_name);
+ fprintf (stream, _("Usage: %s [option(s)] [file(s)]\n"), program_name);
+ fprintf (stream, _(" Display printable strings in [file(s)] (stdin by default)\n"));
+ fprintf (stream, _(" The options are:\n\
+ -a - --all Scan the entire file, not just the data section\n\
+ -f --print-file-name Print the name of the file before each string\n\
+ -n --bytes=[number] Locate & print any NUL-terminated sequence of at\n\
+ -<number> least [number] characters (default 4).\n\
+ -t --radix={o,x,d} Print the location of the string in base 8, 10 or 16\n\
+ -o An alias for --radix=o\n\
+ -T --target=<BFDNAME> Specify the binary file format\n\
+ -e --encoding={s,S,b,l,B,L} Select character size and endianness:\n\
+ s = 7-bit, S = 8-bit, {b,l} = 16-bit, {B,L} = 32-bit\n\
+ -h --help Display this information\n\
+ -v --version Print the program's version number\n"));
list_supported_targets (program_name, stream);
if (status == 0)
fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
projects / binutils.git / blobdiff