666 lines
15 KiB
C
666 lines
15 KiB
C
/* bucomm.c -- Bin Utils COMmon code.
|
||
Copyright (C) 1991-2017 Free Software Foundation, Inc.
|
||
|
||
This file is part of GNU Binutils.
|
||
|
||
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 3 of the License, 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. */
|
||
|
||
/* We might put this in a library someday so it could be dynamically
|
||
loaded, but for now it's not necessary. */
|
||
|
||
#include "sysdep.h"
|
||
#include "bfd.h"
|
||
#include "libiberty.h"
|
||
#include "filenames.h"
|
||
|
||
#include <time.h> /* ctime, maybe time_t */
|
||
#include <assert.h>
|
||
#include "bucomm.h"
|
||
|
||
#ifndef HAVE_TIME_T_IN_TIME_H
|
||
#ifndef HAVE_TIME_T_IN_TYPES_H
|
||
typedef long time_t;
|
||
#endif
|
||
#endif
|
||
|
||
/* Error reporting. */
|
||
|
||
char *program_name;
|
||
|
||
void
|
||
bfd_nonfatal (const char *string)
|
||
{
|
||
const char *errmsg;
|
||
|
||
errmsg = bfd_errmsg (bfd_get_error ());
|
||
fflush (stdout);
|
||
if (string)
|
||
fprintf (stderr, "%s: %s: %s\n", program_name, string, errmsg);
|
||
else
|
||
fprintf (stderr, "%s: %s\n", program_name, errmsg);
|
||
}
|
||
|
||
/* Issue a non fatal error message. FILENAME, or if NULL then BFD,
|
||
are used to indicate the problematic file. SECTION, if non NULL,
|
||
is used to provide a section name. If FORMAT is non-null, then it
|
||
is used to print additional information via vfprintf. Finally the
|
||
bfd error message is printed. In summary, error messages are of
|
||
one of the following forms:
|
||
|
||
PROGRAM:file: bfd-error-message
|
||
PROGRAM:file[section]: bfd-error-message
|
||
PROGRAM:file: printf-message: bfd-error-message
|
||
PROGRAM:file[section]: printf-message: bfd-error-message. */
|
||
|
||
void
|
||
bfd_nonfatal_message (const char *filename,
|
||
const bfd *abfd,
|
||
const asection *section,
|
||
const char *format, ...)
|
||
{
|
||
const char *errmsg;
|
||
const char *section_name;
|
||
va_list args;
|
||
|
||
errmsg = bfd_errmsg (bfd_get_error ());
|
||
fflush (stdout);
|
||
section_name = NULL;
|
||
va_start (args, format);
|
||
fprintf (stderr, "%s", program_name);
|
||
|
||
if (abfd)
|
||
{
|
||
if (!filename)
|
||
filename = bfd_get_archive_filename (abfd);
|
||
if (section)
|
||
section_name = bfd_get_section_name (abfd, section);
|
||
}
|
||
if (section_name)
|
||
fprintf (stderr, ":%s[%s]", filename, section_name);
|
||
else
|
||
fprintf (stderr, ":%s", filename);
|
||
|
||
if (format)
|
||
{
|
||
fprintf (stderr, ": ");
|
||
vfprintf (stderr, format, args);
|
||
}
|
||
fprintf (stderr, ": %s\n", errmsg);
|
||
va_end (args);
|
||
}
|
||
|
||
void
|
||
bfd_fatal (const char *string)
|
||
{
|
||
bfd_nonfatal (string);
|
||
xexit (1);
|
||
}
|
||
|
||
void
|
||
report (const char * format, va_list args)
|
||
{
|
||
fflush (stdout);
|
||
fprintf (stderr, "%s: ", program_name);
|
||
vfprintf (stderr, format, args);
|
||
putc ('\n', stderr);
|
||
}
|
||
|
||
void
|
||
fatal (const char *format, ...)
|
||
{
|
||
va_list args;
|
||
|
||
va_start (args, format);
|
||
|
||
report (format, args);
|
||
va_end (args);
|
||
xexit (1);
|
||
}
|
||
|
||
void
|
||
non_fatal (const char *format, ...)
|
||
{
|
||
va_list args;
|
||
|
||
va_start (args, format);
|
||
|
||
report (format, args);
|
||
va_end (args);
|
||
}
|
||
|
||
/* Set the default BFD target based on the configured target. Doing
|
||
this permits the binutils to be configured for a particular target,
|
||
and linked against a shared BFD library which was configured for a
|
||
different target. */
|
||
|
||
void
|
||
set_default_bfd_target (void)
|
||
{
|
||
/* The macro TARGET is defined by Makefile. */
|
||
const char *target = TARGET;
|
||
|
||
if (! bfd_set_default_target (target))
|
||
fatal (_("can't set BFD default target to `%s': %s"),
|
||
target, bfd_errmsg (bfd_get_error ()));
|
||
}
|
||
|
||
/* After a FALSE return from bfd_check_format_matches with
|
||
bfd_get_error () == bfd_error_file_ambiguously_recognized, print
|
||
the possible matching targets. */
|
||
|
||
void
|
||
list_matching_formats (char **p)
|
||
{
|
||
fflush (stdout);
|
||
fprintf (stderr, _("%s: Matching formats:"), program_name);
|
||
while (*p)
|
||
fprintf (stderr, " %s", *p++);
|
||
fputc ('\n', stderr);
|
||
}
|
||
|
||
/* List the supported targets. */
|
||
|
||
void
|
||
list_supported_targets (const char *name, FILE *f)
|
||
{
|
||
int t;
|
||
const char **targ_names;
|
||
|
||
if (name == NULL)
|
||
fprintf (f, _("Supported targets:"));
|
||
else
|
||
fprintf (f, _("%s: supported targets:"), name);
|
||
|
||
targ_names = bfd_target_list ();
|
||
for (t = 0; targ_names[t] != NULL; t++)
|
||
fprintf (f, " %s", targ_names[t]);
|
||
fprintf (f, "\n");
|
||
free (targ_names);
|
||
}
|
||
|
||
/* List the supported architectures. */
|
||
|
||
void
|
||
list_supported_architectures (const char *name, FILE *f)
|
||
{
|
||
const char ** arch;
|
||
const char ** arches;
|
||
|
||
if (name == NULL)
|
||
fprintf (f, _("Supported architectures:"));
|
||
else
|
||
fprintf (f, _("%s: supported architectures:"), name);
|
||
|
||
for (arch = arches = bfd_arch_list (); *arch; arch++)
|
||
fprintf (f, " %s", *arch);
|
||
fprintf (f, "\n");
|
||
free (arches);
|
||
}
|
||
|
||
static const char *
|
||
endian_string (enum bfd_endian endian)
|
||
{
|
||
switch (endian)
|
||
{
|
||
case BFD_ENDIAN_BIG: return _("big endian");
|
||
case BFD_ENDIAN_LITTLE: return _("little endian");
|
||
default: return _("endianness unknown");
|
||
}
|
||
}
|
||
|
||
/* Data passed to do_display_target and other target iterators. */
|
||
|
||
struct display_target {
|
||
/* Temp file. */
|
||
char *filename;
|
||
/* Return status. */
|
||
int error;
|
||
/* Number of targets. */
|
||
int count;
|
||
/* Size of info in bytes. */
|
||
size_t alloc;
|
||
/* Per-target info. */
|
||
struct {
|
||
/* Target name. */
|
||
const char *name;
|
||
/* Non-zero if target/arch combination supported. */
|
||
unsigned char arch[bfd_arch_last - bfd_arch_obscure - 1];
|
||
} *info;
|
||
};
|
||
|
||
/* List the targets that BFD is configured to support, each followed
|
||
by its endianness and the architectures it supports. Also build
|
||
info about target/archs. */
|
||
|
||
static int
|
||
do_display_target (const bfd_target *targ, void *data)
|
||
{
|
||
struct display_target *param = (struct display_target *) data;
|
||
bfd *abfd;
|
||
size_t amt;
|
||
|
||
param->count += 1;
|
||
amt = param->count * sizeof (*param->info);
|
||
if (param->alloc < amt)
|
||
{
|
||
size_t size = ((param->count < 64 ? 64 : param->count)
|
||
* sizeof (*param->info) * 2);
|
||
param->info = xrealloc (param->info, size);
|
||
memset ((char *) param->info + param->alloc, 0, size - param->alloc);
|
||
param->alloc = size;
|
||
}
|
||
param->info[param->count - 1].name = targ->name;
|
||
|
||
printf (_("%s\n (header %s, data %s)\n"), targ->name,
|
||
endian_string (targ->header_byteorder),
|
||
endian_string (targ->byteorder));
|
||
|
||
abfd = bfd_openw (param->filename, targ->name);
|
||
if (abfd == NULL)
|
||
{
|
||
bfd_nonfatal (param->filename);
|
||
param->error = 1;
|
||
}
|
||
else if (!bfd_set_format (abfd, bfd_object))
|
||
{
|
||
if (bfd_get_error () != bfd_error_invalid_operation)
|
||
{
|
||
bfd_nonfatal (targ->name);
|
||
param->error = 1;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
enum bfd_architecture a;
|
||
|
||
for (a = bfd_arch_obscure + 1; a < bfd_arch_last; a++)
|
||
if (bfd_set_arch_mach (abfd, a, 0))
|
||
{
|
||
printf (" %s\n", bfd_printable_arch_mach (a, 0));
|
||
param->info[param->count - 1].arch[a - bfd_arch_obscure - 1] = 1;
|
||
}
|
||
}
|
||
if (abfd != NULL)
|
||
bfd_close_all_done (abfd);
|
||
|
||
return param->error;
|
||
}
|
||
|
||
static void
|
||
display_target_list (struct display_target *arg)
|
||
{
|
||
arg->filename = make_temp_file (NULL);
|
||
arg->error = 0;
|
||
arg->count = 0;
|
||
arg->alloc = 0;
|
||
arg->info = NULL;
|
||
|
||
bfd_iterate_over_targets (do_display_target, arg);
|
||
|
||
unlink (arg->filename);
|
||
free (arg->filename);
|
||
}
|
||
|
||
/* Calculate how many targets we can print across the page. */
|
||
|
||
static int
|
||
do_info_size (int targ, int width, const struct display_target *arg)
|
||
{
|
||
while (targ < arg->count)
|
||
{
|
||
width -= strlen (arg->info[targ].name) + 1;
|
||
if (width < 0)
|
||
return targ;
|
||
++targ;
|
||
}
|
||
return targ;
|
||
}
|
||
|
||
/* Print header of target names. */
|
||
|
||
static void
|
||
do_info_header (int targ, int stop_targ, const struct display_target *arg)
|
||
{
|
||
while (targ != stop_targ)
|
||
printf ("%s ", arg->info[targ++].name);
|
||
}
|
||
|
||
/* Print a table row. */
|
||
|
||
static void
|
||
do_info_row (int targ, int stop_targ, enum bfd_architecture a,
|
||
const struct display_target *arg)
|
||
{
|
||
while (targ != stop_targ)
|
||
{
|
||
if (arg->info[targ].arch[a - bfd_arch_obscure - 1])
|
||
fputs (arg->info[targ].name, stdout);
|
||
else
|
||
{
|
||
int l = strlen (arg->info[targ].name);
|
||
while (l--)
|
||
putchar ('-');
|
||
}
|
||
++targ;
|
||
if (targ != stop_targ)
|
||
putchar (' ');
|
||
}
|
||
}
|
||
|
||
/* Print tables of all the target-architecture combinations that
|
||
BFD has been configured to support. */
|
||
|
||
static void
|
||
display_target_tables (const struct display_target *arg)
|
||
{
|
||
const char *columns;
|
||
int width, start_targ, stop_targ;
|
||
enum bfd_architecture arch;
|
||
int longest_arch = 0;
|
||
|
||
for (arch = bfd_arch_obscure + 1; arch < bfd_arch_last; arch++)
|
||
{
|
||
const char *s = bfd_printable_arch_mach (arch, 0);
|
||
int len = strlen (s);
|
||
if (len > longest_arch)
|
||
longest_arch = len;
|
||
}
|
||
|
||
width = 0;
|
||
columns = getenv ("COLUMNS");
|
||
if (columns != NULL)
|
||
width = atoi (columns);
|
||
if (width == 0)
|
||
width = 80;
|
||
|
||
for (start_targ = 0; start_targ < arg->count; start_targ = stop_targ)
|
||
{
|
||
stop_targ = do_info_size (start_targ, width - longest_arch - 1, arg);
|
||
|
||
printf ("\n%*s", longest_arch + 1, " ");
|
||
do_info_header (start_targ, stop_targ, arg);
|
||
putchar ('\n');
|
||
|
||
for (arch = bfd_arch_obscure + 1; arch < bfd_arch_last; arch++)
|
||
{
|
||
if (strcmp (bfd_printable_arch_mach (arch, 0), "UNKNOWN!") != 0)
|
||
{
|
||
printf ("%*s ", longest_arch,
|
||
bfd_printable_arch_mach (arch, 0));
|
||
|
||
do_info_row (start_targ, stop_targ, arch, arg);
|
||
putchar ('\n');
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
int
|
||
display_info (void)
|
||
{
|
||
struct display_target arg;
|
||
|
||
printf (_("BFD header file version %s\n"), BFD_VERSION_STRING);
|
||
|
||
display_target_list (&arg);
|
||
if (!arg.error)
|
||
display_target_tables (&arg);
|
||
|
||
return arg.error;
|
||
}
|
||
|
||
/* Display the archive header for an element as if it were an ls -l listing:
|
||
|
||
Mode User\tGroup\tSize\tDate Name */
|
||
|
||
void
|
||
print_arelt_descr (FILE *file, bfd *abfd, bfd_boolean verbose)
|
||
{
|
||
struct stat buf;
|
||
|
||
if (verbose)
|
||
{
|
||
if (bfd_stat_arch_elt (abfd, &buf) == 0)
|
||
{
|
||
char modebuf[11];
|
||
char timebuf[40];
|
||
time_t when = buf.st_mtime;
|
||
const char *ctime_result = (const char *) ctime (&when);
|
||
bfd_size_type size;
|
||
|
||
/* PR binutils/17605: Check for corrupt time values. */
|
||
if (ctime_result == NULL)
|
||
sprintf (timebuf, _("<time data corrupt>"));
|
||
else
|
||
/* POSIX format: skip weekday and seconds from ctime output. */
|
||
sprintf (timebuf, "%.12s %.4s", ctime_result + 4, ctime_result + 20);
|
||
|
||
mode_string (buf.st_mode, modebuf);
|
||
modebuf[10] = '\0';
|
||
size = buf.st_size;
|
||
/* POSIX 1003.2/D11 says to skip first character (entry type). */
|
||
fprintf (file, "%s %ld/%ld %6" BFD_VMA_FMT "u %s ", modebuf + 1,
|
||
(long) buf.st_uid, (long) buf.st_gid,
|
||
size, timebuf);
|
||
}
|
||
}
|
||
|
||
fprintf (file, "%s\n", bfd_get_filename (abfd));
|
||
}
|
||
|
||
/* Return a path for a new temporary file in the same directory
|
||
as file PATH. */
|
||
|
||
static char *
|
||
template_in_dir (const char *path)
|
||
{
|
||
#define template "stXXXXXX"
|
||
const char *slash = strrchr (path, '/');
|
||
char *tmpname;
|
||
size_t len;
|
||
|
||
#ifdef HAVE_DOS_BASED_FILE_SYSTEM
|
||
{
|
||
/* We could have foo/bar\\baz, or foo\\bar, or d:bar. */
|
||
char *bslash = strrchr (path, '\\');
|
||
|
||
if (slash == NULL || (bslash != NULL && bslash > slash))
|
||
slash = bslash;
|
||
if (slash == NULL && path[0] != '\0' && path[1] == ':')
|
||
slash = path + 1;
|
||
}
|
||
#endif
|
||
|
||
if (slash != (char *) NULL)
|
||
{
|
||
len = slash - path;
|
||
tmpname = (char *) xmalloc (len + sizeof (template) + 2);
|
||
memcpy (tmpname, path, len);
|
||
|
||
#ifdef HAVE_DOS_BASED_FILE_SYSTEM
|
||
/* If tmpname is "X:", appending a slash will make it a root
|
||
directory on drive X, which is NOT the same as the current
|
||
directory on drive X. */
|
||
if (len == 2 && tmpname[1] == ':')
|
||
tmpname[len++] = '.';
|
||
#endif
|
||
tmpname[len++] = '/';
|
||
}
|
||
else
|
||
{
|
||
tmpname = (char *) xmalloc (sizeof (template));
|
||
len = 0;
|
||
}
|
||
|
||
memcpy (tmpname + len, template, sizeof (template));
|
||
return tmpname;
|
||
#undef template
|
||
}
|
||
|
||
/* Return the name of a created temporary file in the same directory
|
||
as FILENAME. */
|
||
|
||
char *
|
||
make_tempname (char *filename)
|
||
{
|
||
char *tmpname = template_in_dir (filename);
|
||
int fd;
|
||
|
||
#ifdef HAVE_MKSTEMP
|
||
fd = mkstemp (tmpname);
|
||
#else
|
||
tmpname = mktemp (tmpname);
|
||
if (tmpname == NULL)
|
||
return NULL;
|
||
fd = open (tmpname, O_RDWR | O_CREAT | O_EXCL, 0600);
|
||
#endif
|
||
if (fd == -1)
|
||
{
|
||
free (tmpname);
|
||
return NULL;
|
||
}
|
||
close (fd);
|
||
return tmpname;
|
||
}
|
||
|
||
/* Return the name of a created temporary directory inside the
|
||
directory containing FILENAME. */
|
||
|
||
char *
|
||
make_tempdir (char *filename)
|
||
{
|
||
char *tmpname = template_in_dir (filename);
|
||
|
||
#ifdef HAVE_MKDTEMP
|
||
return mkdtemp (tmpname);
|
||
#else
|
||
tmpname = mktemp (tmpname);
|
||
if (tmpname == NULL)
|
||
return NULL;
|
||
#if defined (_WIN32) && !defined (__CYGWIN32__)
|
||
if (mkdir (tmpname) != 0)
|
||
return NULL;
|
||
#else
|
||
if (mkdir (tmpname, 0700) != 0)
|
||
return NULL;
|
||
#endif
|
||
return tmpname;
|
||
#endif
|
||
}
|
||
|
||
/* Parse a string into a VMA, with a fatal error if it can't be
|
||
parsed. */
|
||
|
||
bfd_vma
|
||
parse_vma (const char *s, const char *arg)
|
||
{
|
||
bfd_vma ret;
|
||
const char *end;
|
||
|
||
ret = bfd_scan_vma (s, &end, 0);
|
||
|
||
if (*end != '\0')
|
||
fatal (_("%s: bad number: %s"), arg, s);
|
||
|
||
return ret;
|
||
}
|
||
|
||
/* Returns the size of the named file. If the file does not
|
||
exist, or if it is not a real file, then a suitable non-fatal
|
||
error message is printed and (off_t) -1 is returned. */
|
||
|
||
off_t
|
||
get_file_size (const char * file_name)
|
||
{
|
||
struct stat statbuf;
|
||
|
||
if (file_name == NULL)
|
||
return (off_t) -1;
|
||
|
||
if (stat (file_name, &statbuf) < 0)
|
||
{
|
||
if (errno == ENOENT)
|
||
non_fatal (_("'%s': No such file"), file_name);
|
||
else
|
||
non_fatal (_("Warning: could not locate '%s'. reason: %s"),
|
||
file_name, strerror (errno));
|
||
}
|
||
else if (! S_ISREG (statbuf.st_mode))
|
||
non_fatal (_("Warning: '%s' is not an ordinary file"), file_name);
|
||
else if (statbuf.st_size < 0)
|
||
non_fatal (_("Warning: '%s' has negative size, probably it is too large"),
|
||
file_name);
|
||
else
|
||
return statbuf.st_size;
|
||
|
||
return (off_t) -1;
|
||
}
|
||
|
||
/* Return the filename in a static buffer. */
|
||
|
||
const char *
|
||
bfd_get_archive_filename (const bfd *abfd)
|
||
{
|
||
static size_t curr = 0;
|
||
static char *buf;
|
||
size_t needed;
|
||
|
||
assert (abfd != NULL);
|
||
|
||
if (abfd->my_archive == NULL
|
||
|| bfd_is_thin_archive (abfd->my_archive))
|
||
return bfd_get_filename (abfd);
|
||
|
||
needed = (strlen (bfd_get_filename (abfd->my_archive))
|
||
+ strlen (bfd_get_filename (abfd)) + 3);
|
||
if (needed > curr)
|
||
{
|
||
if (curr)
|
||
free (buf);
|
||
curr = needed + (needed >> 1);
|
||
buf = (char *) xmalloc (curr);
|
||
}
|
||
sprintf (buf, "%s(%s)", bfd_get_filename (abfd->my_archive),
|
||
bfd_get_filename (abfd));
|
||
return buf;
|
||
}
|
||
|
||
/* Returns TRUE iff PATHNAME, a filename of an archive member,
|
||
is valid for writing. For security reasons absolute paths
|
||
and paths containing /../ are not allowed. See PR 17533. */
|
||
|
||
bfd_boolean
|
||
is_valid_archive_path (char const * pathname)
|
||
{
|
||
const char * n = pathname;
|
||
|
||
if (IS_ABSOLUTE_PATH (n))
|
||
return FALSE;
|
||
|
||
while (*n)
|
||
{
|
||
if (*n == '.' && *++n == '.' && ( ! *++n || IS_DIR_SEPARATOR (*n)))
|
||
return FALSE;
|
||
|
||
while (*n && ! IS_DIR_SEPARATOR (*n))
|
||
n++;
|
||
while (IS_DIR_SEPARATOR (*n))
|
||
n++;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|