/* strings -- print the strings of printable characters in files
- Copyright (C) 1993-2017 Free Software Foundation, Inc.
+ Copyright (C) 1993-2020 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
/* 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;
{"print-file-name", no_argument, NULL, 'f'},
{"bytes", required_argument, NULL, 'n'},
{"radix", required_argument, NULL, 't'},
- {"include-all-whitespace", required_argument, NULL, 'w'},
+ {"include-all-whitespace", no_argument, NULL, 'w'},
{"encoding", required_argument, NULL, 'e'},
{"target", required_argument, NULL, 'T'},
{"output-separator", required_argument, NULL, 's'},
{NULL, 0, NULL, 0}
};
-/* 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 bfd_boolean strings_file (char *);
static void print_strings (const char *, FILE *, file_ptr, int, int, char *);
static void usage (FILE *, int) ATTRIBUTE_NORETURN;
usage (stderr, 1);
}
- bfd_init ();
+ if (bfd_init () != BFD_INIT_MAGIC)
+ fatal (_("fatal error: libbfd ABI mismatch"));
set_default_bfd_target ();
if (optind >= argc)
return (exit_status);
}
\f
-/* 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. */
+/* Scan section SECT of the file ABFD, whose printable name is
+ FILENAME. 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 *arg)
+strings_a_section (bfd *abfd, asection *sect, const char *filename,
+ bfd_boolean *got_a_section)
{
- filename_and_size_t * filename_and_sizep;
- bfd_size_type *filesizep;
bfd_size_type sectsize;
- void *mem;
+ bfd_byte *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)
+ sectsize = bfd_section_size (sect);
+ if (sectsize == 0)
return;
- mem = xmalloc (sectsize);
-
- if (bfd_get_section_contents (abfd, sect, mem, (file_ptr) 0, sectsize))
+ if (!bfd_malloc_and_get_section (abfd, sect, &mem))
{
- got_a_section = TRUE;
-
- print_strings (filename_and_sizep->filename, NULL, sect->filepos,
- 0, sectsize, (char *) mem);
+ non_fatal (_("%s: Reading section %s failed: %s"),
+ filename, sect->name, bfd_errmsg (bfd_get_error ()));
+ return;
}
+ *got_a_section = TRUE;
+ print_strings (filename, NULL, sect->filepos, 0, sectsize, (char *) mem);
free (mem);
}
static bfd_boolean
strings_object_file (const char *file)
{
- filename_and_size_t filename_and_size;
bfd *abfd;
+ asection *s;
+ bfd_boolean got_a_section;
abfd = bfd_openr (file, target);
}
got_a_section = FALSE;
- filename_and_size.filename = file;
- filename_and_size.filesize = 0;
- bfd_map_over_sections (abfd, strings_a_section, & filename_and_size);
+ for (s = abfd->sections; s != NULL; s = s->next)
+ strings_a_section (abfd, s, file, &got_a_section);
if (!bfd_close (abfd))
{
file, strerror (errno));
return FALSE;
}
+ else if (S_ISDIR (st.st_mode))
+ {
+ non_fatal (_("Warning: '%s' is a directory"), file);
+ return FALSE;
+ }
/* If we weren't told to scan the whole file,
try to open it as an object file and only look at
return r;
}
+
+/* Throw away one byte of a (possibly) multi-byte char C, updating
+ address and buffer to suit. */
+
+static void
+unget_part_char (long c, file_ptr *address, int *magiccount, char **magic)
+{
+ static char tmp[4];
+
+ if (encoding_bytes > 1)
+ {
+ *address -= encoding_bytes - 1;
+
+ if (*magiccount == 0)
+ {
+ /* If no magic buffer exists, use temp buffer. */
+ switch (encoding)
+ {
+ default:
+ break;
+ case 'b':
+ tmp[0] = c & 0xff;
+ *magiccount = 1;
+ break;
+ case 'l':
+ tmp[0] = (c >> 8) & 0xff;
+ *magiccount = 1;
+ break;
+ case 'B':
+ tmp[0] = (c >> 16) & 0xff;
+ tmp[1] = (c >> 8) & 0xff;
+ tmp[2] = c & 0xff;
+ *magiccount = 3;
+ break;
+ case 'L':
+ tmp[0] = (c >> 8) & 0xff;
+ tmp[1] = (c >> 16) & 0xff;
+ tmp[2] = (c >> 24) & 0xff;
+ *magiccount = 3;
+ break;
+ }
+ *magic = tmp;
+ }
+ else
+ {
+ /* If magic buffer exists, rewind. */
+ *magic -= encoding_bytes - 1;
+ *magiccount += encoding_bytes - 1;
+ }
+ }
+}
\f
/* Find the strings in file FILENAME, read from STREAM.
Assume that STREAM is positioned so that the next byte read
free (buf);
return;
}
+
if (! STRING_ISGRAPHIC (c))
- /* Found a non-graphic. Try again starting with next char. */
- goto tryline;
+ {
+ /* Found a non-graphic. Try again starting with next byte. */
+ unget_part_char (c, &address, &magiccount, &magic);
+ goto tryline;
+ }
buf[i] = c;
}
if (sizeof (start) > sizeof (long))
{
# ifndef __MSVCRT__
- printf ("%7llo ", (unsigned long long) start);
+ printf ("%7llo ", (unsigned long long) start);
# else
- printf ("%7I64o ", (unsigned long long) start);
+ printf ("%7I64o ", (unsigned long long) start);
# endif
}
else
#elif !BFD_HOST_64BIT_LONG
- if (start != (unsigned long) start)
- printf ("++%7lo ", (unsigned long) start);
- else
+ if (start != (unsigned long) start)
+ printf ("++%7lo ", (unsigned long) start);
+ else
#endif
- printf ("%7lo ", (unsigned long) start);
+ printf ("%7lo ", (unsigned long) start);
break;
case 10:
if (sizeof (start) > sizeof (long))
{
# ifndef __MSVCRT__
- printf ("%7lld ", (unsigned long long) start);
+ printf ("%7llu ", (unsigned long long) start);
# else
- printf ("%7I64d ", (unsigned long long) start);
+ printf ("%7I64d ", (unsigned long long) start);
# endif
}
else
#elif !BFD_HOST_64BIT_LONG
- if (start != (unsigned long) start)
- printf ("++%7ld ", (unsigned long) start);
- else
+ if (start != (unsigned long) start)
+ printf ("++%7lu ", (unsigned long) start);
+ else
#endif
- printf ("%7ld ", (long) start);
+ printf ("%7ld ", (long) start);
break;
case 16:
if (sizeof (start) > sizeof (long))
{
# ifndef __MSVCRT__
- printf ("%7llx ", (unsigned long long) start);
+ printf ("%7llx ", (unsigned long long) start);
# else
- printf ("%7I64x ", (unsigned long long) start);
+ printf ("%7I64x ", (unsigned long long) start);
# endif
}
else
#elif !BFD_HOST_64BIT_LONG
- if (start != (unsigned long) start)
- printf ("%lx%8.8lx ", (unsigned long) (start >> 32),
- (unsigned long) (start & 0xffffffff));
- else
+ if (start != (unsigned long) start)
+ printf ("%lx%8.8lx ", (unsigned long) (start >> 32),
+ (unsigned long) (start & 0xffffffff));
+ else
#endif
- printf ("%7lx ", (unsigned long) start);
+ printf ("%7lx ", (unsigned long) start);
break;
}
if (c == EOF)
break;
if (! STRING_ISGRAPHIC (c))
- break;
+ {
+ unget_part_char (c, &address, &magiccount, &magic);
+ break;
+ }
putchar (c);
}
if (output_separator)
- fputs (output_separator, stdout);
+ fputs (output_separator, stdout);
else
- putchar ('\n');
+ putchar ('\n');
}
free (buf);
}
projects / deliverable / binutils-gdb.git / blobdiff