1 files changed, 651 insertions, 0 deletions

diff --git a/binutils/strings.c b/binutils/strings.c
new file mode 100644
index 000000000000..68c244cafbd8
--- /dev/null
+++ b/binutils/strings.c
@@ -0,0 +1,651 @@
+/* strings -- print the strings of printable characters in files
+   Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
+   2002, 2003 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
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   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.  */
+
+/* Usage: strings [options] file...
+
+   Options:
+   --all
+   -a
+   -		Do not scan only the initialized data section of object files.
+
+   --print-file-name
+   -f		Print the name of the file before each string.
+
+   --bytes=min-len
+   -n min-len
+   -min-len	Print graphic char sequences, MIN-LEN or more bytes long,
+		that are followed by a NUL or a newline.  Default is 4.
+
+   --radix={o,x,d}
+   -t {o,x,d}	Print the offset within the file before each string,
+		in octal/hex/decimal.
+
+   -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.
+
+   --help
+   -h		Print the usage message on the standard output.
+
+   --version
+   -v		Print the program version number.
+
+   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 "bfd.h"
+#include <stdio.h>
+#include "getopt.h"
+#include <errno.h>
+#include "bucomm.h"
+#include "libiberty.h"
+#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 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;
+#endif
+
+/* 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 bfd_boolean print_addresses;
+
+/* TRUE means print filename for each string.  */
+static bfd_boolean print_filenames;
+
+/* 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 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 (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 **);
+
+int main (int, char **);
+
+int
+main (int argc, char **argv)
+{
+  int optc;
+  int exit_status = 0;
+  bfd_boolean files_given = FALSE;
+
+#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;
+  target = NULL;
+  encoding = 's';
+
+  while ((optc = getopt_long (argc, argv, "afhHn:ot:e:Vv0123456789",
+			      long_options, (int *) 0)) != EOF)
+    {
+      switch (optc)
+	{
+	case 'a':
+	  datasection_only = FALSE;
+	  break;
+
+	case 'f':
+	  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);
+	  break;
+
+	case 'o':
+	  print_addresses = TRUE;
+	  address_radix = 8;
+	  break;
+
+	case 't':
+	  print_addresses = TRUE;
+	  if (optarg[1] != '\0')
+	    usage (stderr, 1);
+	  switch (optarg[0])
+	    {
+	    case 'o':
+	      address_radix = 8;
+	      break;
+
+	    case 'd':
+	      address_radix = 10;
+	      break;
+
+	    case 'x':
+	      address_radix = 16;
+	      break;
+
+	    default:
+	      usage (stderr, 1);
+	    }
+	  break;
+
+	case 'T':
+	  target = optarg;
+	  break;
+
+	case 'e':
+	  if (optarg[1] != '\0')
+	    usage (stderr, 1);
+	  encoding = optarg[0];
+	  break;
+
+	case 'V':
+	case 'v':
+	  print_version ("strings");
+	  break;
+
+	case '?':
+	  usage (stderr, 1);
+
+	default:
+	  if (string_min < 0)
+	    string_min = optc - '0';
+	  else
+	    string_min = string_min * 10 + optc - '0';
+	  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;
+#ifdef SET_BINARY
+      SET_BINARY (fileno (stdin));
+#endif
+      print_strings ("{standard input}", stdin, 0, 0, 0, (char *) NULL);
+      files_given = TRUE;
+    }
+  else
+    {
+      for (; optind < argc; ++optind)
+	{
+	  if (strcmp (argv[optind], "-") == 0)
+	    datasection_only = FALSE;
+	  else
+	    {
+	      files_given = TRUE;
+	      exit_status |= strings_file (argv[optind]) == FALSE;
+	    }
+	}
+    }
+
+  if (!files_given)
+    usage (stderr, 1);
+
+  return (exit_status);
+}
+
+/* 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.  */
+
+static void
+strings_a_section (bfd *abfd, asection *sect, void *filearg)
+{
+  const char *file = (const char *) filearg;
+
+  if ((sect->flags & DATA_FLAGS) == DATA_FLAGS)
+    {
+      bfd_size_type sz = bfd_get_section_size_before_reloc (sect);
+      void *mem = xmalloc (sz);
+
+      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);
+    }
+}
+
+/* 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).  */
+
+static bfd_boolean
+strings_object_file (const char *file)
+{
+  bfd *abfd = bfd_openr (file, target);
+
+  if (abfd == NULL)
+    /* 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))
+    {
+      bfd_close (abfd);
+      return FALSE;
+    }
+
+  got_a_section = FALSE;
+  bfd_map_over_sections (abfd, strings_a_section, (void *) file);
+
+  if (!bfd_close (abfd))
+    {
+      bfd_nonfatal (file);
+      return FALSE;
+    }
+
+  return got_a_section;
+}
+
+/* Print the strings in FILE.  Return TRUE if ok, FALSE if an error occurs.  */
+
+static bfd_boolean
+strings_file (char *file)
+{
+  if (get_file_size (file) < 1)
+    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
+     whole file.  */
+  if (!datasection_only || !strings_object_file (file))
+    {
+      FILE *stream;
+
+      stream = file_open (file, FOPEN_RB);
+      if (stream == NULL)
+	{
+	  fprintf (stderr, "%s: ", program_name);
+	  perror (file);
+	  return FALSE;
+	}
+
+      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 TRUE;
+}
+
+/* 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 (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;
+    }
+
+  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;
+}
+
+/* Find the strings in file FILENAME, read from STREAM.
+   Assume that STREAM is positioned so that the next byte read
+   is at address ADDRESS in the file.
+   Stop reading at address STOP_POINT in the file, if nonzero.
+
+   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.
+   Those characters come at address ADDRESS and the data in STREAM follow.  */
+
+static void
+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));
+
+  while (1)
+    {
+      file_off start;
+      int i;
+      long c;
+
+      /* See if the next `string_min' chars are all graphic chars.  */
+    tryline:
+      if (stop_point && address >= stop_point)
+	break;
+      start = address;
+      for (i = 0; i < string_min; i++)
+	{
+	  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;
+	}
+
+      /* We found a run of `string_min' graphic characters.  Print up
+         to the next non-graphic character.  */
+
+      if (print_filenames)
+	printf ("%s: ", filename);
+      if (print_addresses)
+	switch (address_radix)
+	  {
+	  case 8:
+#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:
+#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:
+#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;
+	  }
+
+      buf[i] = '\0';
+      fputs (buf, stdout);
+
+      while (1)
+	{
+	  c = get_char (stream, &address, &magiccount, &magic);
+	  if (c == EOF)
+	    break;
+	  if (! STRING_ISGRAPHIC (c))
+	    break;
+	  putchar (c);
+	}
+
+      putchar ('\n');
+    }
+}
+
+/* Parse string S as an integer, using decimal radix by default,
+   but allowing octal and hex numbers as in C.  */
+
+static int
+integer_arg (char *s)
+{
+  int value;
+  int radix = 10;
+  char *p = s;
+  int c;
+
+  if (*p != '0')
+    radix = 10;
+  else if (*++p == 'x')
+    {
+      radix = 16;
+      p++;
+    }
+  else
+    radix = 8;
+
+  value = 0;
+  while (((c = *p++) >= '0' && c <= '9')
+	 || (radix == 16 && (c & ~40) >= 'A' && (c & ~40) <= 'Z'))
+    {
+      value *= radix;
+      if (c >= '0' && c <= '9')
+	value += c - '0';
+      else
+	value += (c & ~40) - 'A';
+    }
+
+  if (c == 'b')
+    value *= 512;
+  else if (c == 'B')
+    value *= 1024;
+  else
+    p--;
+
+  if (*p)
+    fatal (_("invalid integer argument %s"), s);
+
+  return value;
+}
+
+static void
+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"));
+  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);
+  exit (status);
+}