X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=binutils%2Fstrings.c;h=2fcdb95e2086c107ef78c54bcf0585a46aac2896;hb=55aba7043f437bf4345543b46cd99593bc821a5a;hp=ab845b04d42bc9a3313a55ac91c225bc4df39b00;hpb=37cc8ec1be0959c1878e79fd2baed888da4a2775;p=deliverable%2Fbinutils-gdb.git diff --git a/binutils/strings.c b/binutils/strings.c index ab845b04d4..2fcdb95e20 100644 --- a/binutils/strings.c +++ b/binutils/strings.c @@ -1,6 +1,6 @@ /* 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, 2003, 2004 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 @@ -39,6 +39,12 @@ -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. @@ -51,19 +57,39 @@ Written by Richard Stallman and David MacKenzie . */ +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif #include "bfd.h" #include -#include -#include +#include "getopt.h" #include #include "bucomm.h" #include "libiberty.h" - -#ifdef isascii -#define isgraphic(c) (isascii (c) && isprint (c)) +#include "safe-ctype.h" +#include + +/* 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 +#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; @@ -72,59 +98,78 @@ 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 +#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 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 (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 (argc, argv) - int argc; - char **argv; +main (int argc, char **argv) { 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); @@ -132,42 +177,42 @@ main (argc, argv) 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]) @@ -193,6 +238,13 @@ main (argc, argv) target = optarg; break; + case 'e': + if (optarg[1] != '\0') + usage (stderr, 1); + encoding = optarg[0]; + break; + + case 'V': case 'v': print_version ("strings"); break; @@ -212,30 +264,51 @@ main (argc, argv) 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); @@ -246,20 +319,18 @@ main (argc, argv) set `got_a_section' and print the strings in it. */ static void -strings_a_section (abfd, sect, filearg) - bfd *abfd; - asection *sect; - PTR filearg; +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); - PTR mem = xmalloc (sz); + bfd_size_type sz = bfd_get_section_size (sect); + void *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); @@ -269,48 +340,56 @@ strings_a_section (abfd, sect, filearg) /* 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 -strings_object_file (file) - const char *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; - } + /* 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; - bfd_map_over_sections (abfd, strings_a_section, (PTR) file); + got_a_section = FALSE; + bfd_map_over_sections (abfd, strings_a_section, (void *) 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 -strings_file (file) - char *file; +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 @@ -319,28 +398,94 @@ strings_file (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; +} + +/* 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; } - 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; } /* Find the strings in file FILENAME, read from STREAM. @@ -356,21 +501,16 @@ strings_file (file) 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_ptr 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 (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: @@ -379,28 +519,17 @@ print_strings (filename, stream, address, stop_point, magiccount, magic) 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; } /* 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); @@ -408,15 +537,49 @@ print_strings (filename, stream, address, stop_point, magiccount, magic) 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 ", (unsigned long) (start >> 32), + (unsigned long) (start & 0xffffffff)); + else +# endif +#endif + printf ("%7lx ", (unsigned long) start); break; } @@ -425,21 +588,10 @@ print_strings (filename, stream, address, stop_point, magiccount, magic) 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); } @@ -452,8 +604,7 @@ print_strings (filename, stream, address, stop_point, magiccount, magic) 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; @@ -489,22 +640,28 @@ integer_arg (s) p--; if (*p) - { - fatal (_("invalid integer argument %s"), s); - } + fatal (_("invalid integer argument %s"), s); + return value; } static void -usage (stream, status) - FILE *stream; - int status; +usage (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\ + - 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= 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);