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Diffstat (limited to 'binutils-2.17/binutils/strings.c')
| -rw-r--r-- | binutils-2.17/binutils/strings.c | 727 |
1 files changed, 0 insertions, 727 deletions
diff --git a/binutils-2.17/binutils/strings.c b/binutils-2.17/binutils/strings.c deleted file mode 100644 index a04cb581..00000000 --- a/binutils-2.17/binutils/strings.c +++ /dev/null @@ -1,727 +0,0 @@ -/* strings -- print the strings of printable characters in files - Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, - 2002, 2003, 2004, 2005 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., 51 Franklin Street - Fifth Floor, Boston, MA - 02110-1301, 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" -#include <sys/stat.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 -#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; - -/* 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} -}; - -/* 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 **); - -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); - - expandargv (&argc, &argv); - - 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 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 (bfd *abfd, asection *sect, void *arg) -{ - 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; - - mem = xmalloc (sectsize); - - if (bfd_get_section_contents (abfd, sect, mem, (file_ptr) 0, sectsize)) - { - got_a_section = TRUE; - - 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 - 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) -{ - 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. */ - 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; - 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)) - { - 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) -{ - 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 - 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; - - /* 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); -#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 ", (unsigned long) (start >> 32), - (unsigned long) (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,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) - fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO); - exit (status); -} |