/* strings -- print the strings of printable characters in files
Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
- 2002 Free Software Foundation, Inc.
+ 2002, 2003, 2004, 2005, 2006, 2007 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
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, USA. */
\f
/* Usage: strings [options] file...
littleendian 32-bit.
--target=BFDNAME
+ -T {bfdname}
Specify a non-default object file format.
--help
Written by Richard Stallman <rms@gnu.ai.mit.edu>
and David MacKenzie <djm@gnu.ai.mit.edu>. */
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+#include "sysdep.h"
#include "bfd.h"
-#include <stdio.h>
#include "getopt.h"
-#include <errno.h>
-#include "bucomm.h"
#include "libiberty.h"
#include "safe-ctype.h"
+#include <sys/stat.h>
+#include "bucomm.h"
/* Some platforms need to put stdin into binary mode, to read
binary files. */
typedef off_t file_off;
#define file_open(s,m) fopen(s, m)
#endif
+#ifdef HAVE_STAT64
+typedef struct stat64 statbuf;
+#define file_stat(f,s) stat64(f, s)
+#else
+typedef struct stat statbuf;
+#define file_stat(f,s) stat(f, s)
+#endif
/* Radix for printing addresses (must be 8, 10 or 16). */
static int address_radix;
{NULL, 0, NULL, 0}
};
-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 **));
+/* Records the size of a named file so that we
+ do not repeatedly run bfd_stat() on it. */
+
+typedef struct
+{
+ const char * filename;
+ bfd_size_type filesize;
+} filename_and_size_t;
+
+static void strings_a_section (bfd *, asection *, void *);
+static bfd_boolean strings_object_file (const char *);
+static bfd_boolean strings_file (char *file);
+static int integer_arg (char *s);
+static void print_strings (const char *, FILE *, file_off, int, int, char *);
+static void usage (FILE *, int);
+static long get_char (FILE *, file_off *, int *, char **);
\f
-int main
- PARAMS ((int, char **));
+int main (int, char **);
int
-main (argc, argv)
- int argc;
- char **argv;
+main (int argc, char **argv)
{
int optc;
int exit_status = 0;
program_name = argv[0];
xmalloc_set_program_name (program_name);
+
+ expandargv (&argc, &argv);
+
string_min = -1;
print_addresses = FALSE;
print_filenames = FALSE;
target = NULL;
encoding = 's';
- while ((optc = getopt_long (argc, argv, "afhHn:ot:e:Vv0123456789",
+ while ((optc = getopt_long (argc, argv, "afhHn:ot:e:T:Vv0123456789",
long_options, (int *) 0)) != EOF)
{
switch (optc)
return (exit_status);
}
\f
-/* Scan section SECT of the file ABFD, whose printable name is FILE.
- If it contains initialized data,
- set `got_a_section' and print the strings in it. */
+/* Scan section SECT of the file ABFD, whose printable name is in
+ ARG->filename and whose size might be in ARG->filesize. If it
+ contains initialized data set `got_a_section' and print the
+ strings in it.
+
+ FIXME: We ought to be able to return error codes/messages for
+ certain conditions. */
static void
-strings_a_section (abfd, sect, filearg)
- bfd *abfd;
- asection *sect;
- PTR filearg;
+strings_a_section (bfd *abfd, asection *sect, void *arg)
{
- const char *file = (const char *) filearg;
+ filename_and_size_t * filename_and_sizep;
+ bfd_size_type *filesizep;
+ bfd_size_type sectsize;
+ void *mem;
+
+ if ((sect->flags & DATA_FLAGS) != DATA_FLAGS)
+ return;
+
+ sectsize = bfd_get_section_size (sect);
+
+ if (sectsize <= 0)
+ return;
+
+ /* Get the size of the file. This might have been cached for us. */
+ filename_and_sizep = (filename_and_size_t *) arg;
+ filesizep = & filename_and_sizep->filesize;
+
+ if (*filesizep == 0)
+ {
+ struct stat st;
+
+ if (bfd_stat (abfd, &st))
+ return;
+
+ /* Cache the result so that we do not repeatedly stat this file. */
+ *filesizep = st.st_size;
+ }
+
+ /* Compare the size of the section against the size of the file.
+ If the section is bigger then the file must be corrupt and
+ we should not try dumping it. */
+ if (sectsize >= *filesizep)
+ return;
- if ((sect->flags & DATA_FLAGS) == DATA_FLAGS)
+ mem = xmalloc (sectsize);
+
+ if (bfd_get_section_contents (abfd, sect, mem, (file_ptr) 0, sectsize))
{
- bfd_size_type sz = bfd_get_section_size_before_reloc (sect);
- PTR mem = xmalloc (sz);
+ got_a_section = TRUE;
- if (bfd_get_section_contents (abfd, sect, mem, (file_ptr) 0, sz))
- {
- got_a_section = TRUE;
- print_strings (file, (FILE *) NULL, sect->filepos, 0, sz, mem);
- }
- free (mem);
+ print_strings (filename_and_sizep->filename, NULL, sect->filepos,
+ 0, sectsize, mem);
}
+
+ free (mem);
}
/* Scan all of the sections in FILE, and print the strings
FALSE if not (such as if FILE is not an object file). */
static bfd_boolean
-strings_object_file (file)
- const char *file;
+strings_object_file (const char *file)
{
- bfd *abfd = bfd_openr (file, target);
+ filename_and_size_t filename_and_size;
+ bfd *abfd;
+
+ abfd = bfd_openr (file, target);
if (abfd == NULL)
/* Treat the file as a non-object file. */
}
got_a_section = FALSE;
- bfd_map_over_sections (abfd, strings_a_section, (PTR) file);
+ filename_and_size.filename = file;
+ filename_and_size.filesize = 0;
+ bfd_map_over_sections (abfd, strings_a_section, & filename_and_size);
if (!bfd_close (abfd))
{
/* Print the strings in FILE. Return TRUE if ok, FALSE if an error occurs. */
static bfd_boolean
-strings_file (file)
- char *file;
+strings_file (char *file)
{
+ statbuf st;
+
+ if (file_stat (file, &st) < 0)
+ {
+ if (errno == ENOENT)
+ non_fatal (_("'%s': No such file"), file);
+ else
+ non_fatal (_("Warning: could not locate '%s'. reason: %s"),
+ file, strerror (errno));
+ return FALSE;
+ }
+
/* If we weren't told to scan the whole file,
try to open it as an object file and only look at
initialized data sections. If that fails, fall back to the
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;
+get_char (FILE *stream, file_off *address, int *magiccount, char **magic)
{
int c, i;
long r = EOF;
{
if (stream == NULL)
return EOF;
-#ifdef HAVE_GETC_UNLOCKED
+
+ /* Only use getc_unlocked if we found a declaration for it.
+ Otherwise, libc is not thread safe by default, and we
+ should not use it. */
+
+#if defined(HAVE_GETC_UNLOCKED) && HAVE_DECL_GETC_UNLOCKED
c = getc_unlocked (stream);
#else
c = getc (stream);
Those characters come at address ADDRESS and the data in STREAM follow. */
static void
-print_strings (filename, stream, address, stop_point, magiccount, magic)
- const char *filename;
- FILE *stream;
- file_off address;
- int stop_point;
- int magiccount;
- char *magic;
+print_strings (const char *filename, FILE *stream, file_off address,
+ int stop_point, int magiccount, char *magic)
{
char *buf = (char *) xmalloc (sizeof (char) * (string_min + 1));
}
/* We found a run of `string_min' graphic characters. Print up
- to the next non-graphic character. */
+ to the next non-graphic character. */
if (print_filenames)
printf ("%s: ", filename);
#else
# if !BFD_HOST_64BIT_LONG
if (start != (unsigned long) start)
- printf ("%lx%8.8lx ", start >> 32, start & 0xffffffff);
+ printf ("%lx%8.8lx ", (unsigned long) (start >> 32),
+ (unsigned long) (start & 0xffffffff));
else
# endif
#endif
but allowing octal and hex numbers as in C. */
static int
-integer_arg (s)
- char *s;
+integer_arg (char *s)
{
int value;
int radix = 10;
}
static void
-usage (stream, status)
- FILE *stream;
- int status;
+usage (FILE *stream, int status)
{
fprintf (stream, _("Usage: %s [option(s)] [file(s)]\n"), program_name);
fprintf (stream, _(" Display printable strings in [file(s)] (stdin by default)\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\
+ -t --radix={o,d,x} 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\
+ @<file> Read options from <file>\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)
+ if (REPORT_BUGS_TO[0] && status == 0)
fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
exit (status);
}
projects / platform / upstream / binutils.git / blobdiff