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/* file_util.h
* File utility definitions
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* 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
* 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.
*/
#ifndef __FILE_UTIL_H__
#define __FILE_UTIL_H__
#include "ws_symbol_export.h"
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#include <glib.h>
#ifdef _WIN32
#include <io.h> /* for _read(), _write(), etc. */
#include <gmodule.h>
#endif
#ifdef HAVE_FCNTL_H
#include <fcntl.h> /* for open() */
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h> /* for read(), write(), close(), etc. */
#endif
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h> /* for stat() and struct stat */
#endif
/*
* Visual C++ on Win32 systems doesn't define these. (Old UNIX systems don't
* define them either.)
*
* Visual C++ on Win32 systems doesn't define S_IFIFO, it defines _S_IFIFO.
*/
#ifndef S_ISREG
#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
#endif
#ifndef S_IFIFO
#define S_IFIFO _S_IFIFO
#endif
#ifndef S_ISFIFO
#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)
#endif
#ifndef S_ISDIR
#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
#endif
#include <stdio.h>
#ifdef _WIN32
/*
* The structure to pass to ws_stat64() and ws_fstat64().
*/
#define ws_statb64 struct _stat64
/* Win32 (and Win64): we use UTF-8 for filenames and pathnames throughout
* the code, so file functions must convert filenames and pathnames from
* UTF-8 to UTF-16 as we use NT Unicode (Win9x - now unsupported - used
* locale-based encoding here). Microsoft's UN*X-style wrappers don't
* do that - they expect locale-based encodings - so we need our own
* wrappers. (We don't use the wrappers from GLib as that would, at
* least for the wrappers that return file descriptors or take them
* as arguments, require that we use the version of the C runtime with
* which the GLib binaries were built, and we can't guarantee to do that.)
*
* Note also that ws_stdio_rename() uses MoveFileEx() with
* MOVEFILE_REPLACE_EXISTING, so that it acts like UN*X rename(),
* removing the target if necessary.
*/
WS_DLL_PUBLIC int ws_stdio_open (const gchar *filename, int flags, int mode);
WS_DLL_PUBLIC int ws_stdio_rename (const gchar *oldfilename, const gchar *newfilename);
WS_DLL_PUBLIC int ws_stdio_mkdir (const gchar *filename, int mode);
WS_DLL_PUBLIC int ws_stdio_stat64 (const gchar *filename, ws_statb64 *buf);
WS_DLL_PUBLIC int ws_stdio_unlink (const gchar *filename);
WS_DLL_PUBLIC int ws_stdio_remove (const gchar *filename);
WS_DLL_PUBLIC FILE * ws_stdio_fopen (const gchar *filename, const gchar *mode);
WS_DLL_PUBLIC FILE * ws_stdio_freopen (const gchar *filename, const gchar *mode, FILE *stream);
#define ws_open ws_stdio_open
#define ws_rename ws_stdio_rename
#define ws_mkdir ws_stdio_mkdir
#define ws_stat64 ws_stdio_stat64
#define ws_unlink ws_stdio_unlink
#define ws_remove ws_stdio_remove
#define ws_fopen ws_stdio_fopen
#define ws_freopen ws_stdio_freopen
/*
* These routines don't take pathnames, so they don't require
* pathname-converting wrappers on Windows.
*/
#define ws_read _read
#define ws_write _write
#define ws_close _close
#define ws_dup _dup
#define ws_fstat64 _fstati64 /* use _fstati64 for 64-bit size support */
#define ws_lseek64 _lseeki64 /* use _lseeki64 for 64-bit offset support */
#define ws_fdopen _fdopen
#define ws_fileno _fileno
#define ws_isatty _isatty
#define ws_getc_unlocked _fgetc_nolock
/*
* Other CRT functions. getpid probably belongs in sys_util.h or proc_util.h
* but neither yet exist.
*/
#define ws_getpid _getpid
#define ws_umask _umask
/* DLL loading */
/** Try to remove the current directory from the DLL search path.
* SetDllDirectory is tried, then SetCurrentDirectory(program_dir)
*
* @return TRUE if we were able to call SetDllDirectory, FALSE otherwise.
*/
WS_DLL_PUBLIC
gboolean ws_init_dll_search_path();
/** Load a DLL using LoadLibrary.
* Only the system and program directories are searched.
*
* @param library_name The name of the DLL.
* @return A handle to the DLL if found, NULL on failure.
*/
WS_DLL_PUBLIC
void *ws_load_library(const gchar *library_name);
/** Load a DLL using g_module_open.
* Only the system and program directories are searched.
*
* @param module_name The name of the DLL.
* @param flags Flags to be passed to g_module_open.
* @return A handle to the DLL if found, NULL on failure.
*/
WS_DLL_PUBLIC
GModule *ws_module_open(gchar *module_name, GModuleFlags flags);
/** Create or open a "Wireshark is running" mutex.
* Create or open a mutex which signals that Wireshark or its associated
* executables is running. Used by the installer to test for a running application.
*/
WS_DLL_PUBLIC void create_app_running_mutex();
#else /* _WIN32 */
/*
* The structure to pass to ws_fstat64().
*/
#define ws_statb64 struct stat
/* Not Windows, presumed to be UN*X-compatible */
#define ws_open open
#define ws_rename rename
#define ws_mkdir(dir,mode) mkdir(dir,mode)
#define ws_stat64 stat
#define ws_unlink unlink
#define ws_remove remove
#define ws_fopen fopen
#define ws_freopen freopen
#define ws_read read
#define ws_write write
#ifdef __cplusplus
/*
* Just in case this is used in a class with a close method or member.
*/
#define ws_close ::close
#else
#define ws_close close
#endif
#define ws_dup dup
#define ws_fstat64 fstat /* AC_SYS_LARGEFILE should make off_t 64-bit */
#define ws_lseek64 lseek /* AC_SYS_LARGEFILE should make off_t 64-bit */
#define ws_fdopen fdopen
#define ws_fileno fileno
#define ws_isatty isatty
#define ws_getc_unlocked getc_unlocked
#define O_BINARY 0 /* Win32 needs the O_BINARY flag for open() */
/* Other CRT functions */
#define ws_getpid getpid
#define ws_umask umask
#endif /* _WIN32 */
/* directory handling */
#define WS_DIR GDir
#define WS_DIRENT const char
#define ws_dir_open g_dir_open
#define ws_dir_read_name g_dir_read_name
#define ws_dir_get_name(dirent) dirent
#define ws_dir_rewind g_dir_rewind
#define ws_dir_close g_dir_close
/* XXX - remove include "sys/stat.h" from files that include this header */
/* XXX - update docs (e.g. README.developer) */
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __FILE_UTIL_H__ */