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-rw-r--r--wsutil/file_util.c476
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diff --git a/wsutil/file_util.c b/wsutil/file_util.c
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+/* file_util.c
+ *
+ * $Id$
+ *
+ * (Originally part of the Wiretap Library, now part of the Wireshark
+ * utility library)
+ * Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu>
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+/* file wrapper functions to prevent the file functions from GLib like g_open(),
+ * as code compiled with MSVC 7 and above will collide with libs linked with msvcrt.dll (MSVC 6), lib GLib is
+ *
+ * DO NOT USE THESE FUNCTIONS DIRECTLY, USE ws_open() AND ALIKE FUNCTIONS FROM file_util.h INSTEAD!!!
+ *
+ * the following code is stripped down code copied from the GLib file glib/gstdio.h
+ * stipped down, because this is used on _WIN32 only and we use only wide char functions */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <glib.h>
+
+#ifdef _WIN32
+#include <windows.h>
+#include <errno.h>
+#include <wchar.h>
+/*#include <direct.h>*/
+#include <io.h>
+#endif
+
+#include "file_util.h"
+
+
+
+
+/**
+ * g_open:
+ * @filename: a pathname in the GLib file name encoding (UTF-8 on Windows)
+ * @flags: as in open()
+ * @mode: as in open()
+ *
+ * A wrapper for the POSIX open() function. The open() function is
+ * used to convert a pathname into a file descriptor. Note that on
+ * POSIX systems file descriptors are implemented by the operating
+ * system. On Windows, it's the C library that implements open() and
+ * file descriptors. The actual Windows API for opening files is
+ * something different.
+ *
+ * See the C library manual for more details about open().
+ *
+ * Returns: a new file descriptor, or -1 if an error occurred. The
+ * return value can be used exactly like the return value from open().
+ *
+ * Since: 2.6
+ */
+int
+ws_stdio_open (const gchar *filename,
+ int flags,
+ int mode)
+{
+#ifdef _WIN32
+ {
+ wchar_t *wfilename = g_utf8_to_utf16 (filename, -1, NULL, NULL, NULL);
+ int retval;
+ int save_errno;
+
+ if (wfilename == NULL)
+ {
+ errno = EINVAL;
+ return -1;
+ }
+
+ retval = _wopen (wfilename, flags, mode);
+ save_errno = errno;
+
+ g_free (wfilename);
+
+ errno = save_errno;
+ return retval;
+ }
+#else
+ return open (filename, flags, mode);
+#endif
+}
+
+
+/**
+ * g_rename:
+ * @oldfilename: a pathname in the GLib file name encoding (UTF-8 on Windows)
+ * @newfilename: a pathname in the GLib file name encoding
+ *
+ * A wrapper for the POSIX rename() function. The rename() function
+ * renames a file, moving it between directories if required.
+ *
+ * See your C library manual for more details about how rename() works
+ * on your system. Note in particular that on Win9x it is not possible
+ * to rename a file if a file with the new name already exists. Also
+ * it is not possible in general on Windows to rename an open file.
+ *
+ * Returns: 0 if the renaming succeeded, -1 if an error occurred
+ *
+ * Since: 2.6
+ */
+int
+ws_stdio_rename (const gchar *oldfilename,
+ const gchar *newfilename)
+{
+#ifdef _WIN32
+ wchar_t *woldfilename = g_utf8_to_utf16 (oldfilename, -1, NULL, NULL, NULL);
+ wchar_t *wnewfilename;
+ int retval;
+ int save_errno = 0;
+
+ if (woldfilename == NULL)
+ {
+ errno = EINVAL;
+ return -1;
+ }
+
+ wnewfilename = g_utf8_to_utf16 (newfilename, -1, NULL, NULL, NULL);
+
+ if (wnewfilename == NULL)
+ {
+ g_free (woldfilename);
+ errno = EINVAL;
+ return -1;
+ }
+
+ if (MoveFileExW (woldfilename, wnewfilename, MOVEFILE_REPLACE_EXISTING))
+ retval = 0;
+ else
+ {
+ retval = -1;
+ switch (GetLastError ())
+ {
+#define CASE(a,b) case ERROR_##a: save_errno = b; break
+ CASE (FILE_NOT_FOUND, ENOENT);
+ CASE (PATH_NOT_FOUND, ENOENT);
+ CASE (ACCESS_DENIED, EACCES);
+ CASE (NOT_SAME_DEVICE, EXDEV);
+ CASE (LOCK_VIOLATION, EACCES);
+ CASE (SHARING_VIOLATION, EACCES);
+ CASE (FILE_EXISTS, EEXIST);
+ CASE (ALREADY_EXISTS, EEXIST);
+#undef CASE
+ default: save_errno = EIO;
+ }
+ }
+
+ g_free (woldfilename);
+ g_free (wnewfilename);
+
+ errno = save_errno;
+ return retval;
+#else
+ return rename (oldfilename, newfilename);
+#endif
+}
+
+/**
+ * g_mkdir:
+ * @filename: a pathname in the GLib file name encoding (UTF-8 on Windows)
+ * @mode: permissions to use for the newly created directory
+ *
+ * A wrapper for the POSIX mkdir() function. The mkdir() function
+ * attempts to create a directory with the given name and permissions.
+ *
+ * See the C library manual for more details about mkdir().
+ *
+ * Returns: 0 if the directory was successfully created, -1 if an error
+ * occurred
+ *
+ * Since: 2.6
+ */
+int
+ws_stdio_mkdir (const gchar *filename,
+ int mode)
+{
+#ifdef _WIN32
+ wchar_t *wfilename = g_utf8_to_utf16 (filename, -1, NULL, NULL, NULL);
+ int retval;
+ int save_errno;
+
+ if (wfilename == NULL)
+ {
+ errno = EINVAL;
+ return -1;
+ }
+
+ retval = _wmkdir (wfilename);
+ save_errno = errno;
+
+ g_free (wfilename);
+
+ errno = save_errno;
+ return retval;
+#else
+ return mkdir (filename, mode);
+#endif
+}
+
+/**
+ * g_stat:
+ * @filename: a pathname in the GLib file name encoding (UTF-8 on Windows)
+ * @buf: a pointer to a <structname>stat</structname> struct, which
+ * will be filled with the file information
+ *
+ * A wrapper for the POSIX stat() function. The stat() function
+ * returns information about a file.
+ *
+ * See the C library manual for more details about stat().
+ *
+ * Returns: 0 if the information was successfully retrieved, -1 if an error
+ * occurred
+ *
+ * Since: 2.6
+ */
+int
+ws_stdio_stat (const gchar *filename,
+ struct stat *buf)
+{
+#ifdef _WIN32
+ wchar_t *wfilename = g_utf8_to_utf16 (filename, -1, NULL, NULL, NULL);
+ int retval;
+ int save_errno;
+ int len;
+
+ if (wfilename == NULL)
+ {
+ errno = EINVAL;
+ return -1;
+ }
+
+ len = wcslen (wfilename);
+ while (len > 0 && G_IS_DIR_SEPARATOR (wfilename[len-1]))
+ len--;
+ if (len > 0 &&
+ (!g_path_is_absolute (filename) || len > g_path_skip_root (filename) - filename))
+ wfilename[len] = '\0';
+
+ retval = _wstat (wfilename, (struct _stat *) buf);
+ save_errno = errno;
+
+ g_free (wfilename);
+
+ errno = save_errno;
+ return retval;
+#else
+ return stat (filename, buf);
+#endif
+}
+
+/**
+ * g_unlink:
+ * @filename: a pathname in the GLib file name encoding (UTF-8 on Windows)
+ *
+ * A wrapper for the POSIX unlink() function. The unlink() function
+ * deletes a name from the filesystem. If this was the last link to the
+ * file and no processes have it opened, the diskspace occupied by the
+ * file is freed.
+ *
+ * See your C library manual for more details about unlink(). Note
+ * that on Windows, it is in general not possible to delete files that
+ * are open to some process, or mapped into memory.
+ *
+ * Returns: 0 if the name was successfully deleted, -1 if an error
+ * occurred
+ *
+ * Since: 2.6
+ */
+int
+ws_stdio_unlink (const gchar *filename)
+{
+#ifdef _WIN32
+ gchar *cp_filename = g_locale_from_utf8 (filename, -1, NULL, NULL, NULL);
+ int retval;
+ int save_errno;
+
+ if (cp_filename == NULL)
+ {
+ errno = EINVAL;
+ return -1;
+ }
+
+ retval = unlink (cp_filename);
+ save_errno = errno;
+
+ g_free (cp_filename);
+
+ errno = save_errno;
+ return retval;
+#else
+ return unlink (filename);
+#endif
+}
+
+/**
+ * g_remove:
+ * @filename: a pathname in the GLib file name encoding (UTF-8 on Windows)
+ *
+ * A wrapper for the POSIX remove() function. The remove() function
+ * deletes a name from the filesystem.
+ *
+ * See your C library manual for more details about how remove() works
+ * on your system. On Unix, remove() removes also directories, as it
+ * calls unlink() for files and rmdir() for directories. On Windows,
+ * although remove() in the C library only works for files, this
+ * function tries first remove() and then if that fails rmdir(), and
+ * thus works for both files and directories. Note however, that on
+ * Windows, it is in general not possible to remove a file that is
+ * open to some process, or mapped into memory.
+ *
+ * If this function fails on Windows you can't infer too much from the
+ * errno value. rmdir() is tried regardless of what caused remove() to
+ * fail. Any errno value set by remove() will be overwritten by that
+ * set by rmdir().
+ *
+ * Returns: 0 if the file was successfully removed, -1 if an error
+ * occurred
+ *
+ * Since: 2.6
+ */
+int
+ws_stdio_remove (const gchar *filename)
+{
+#ifdef _WIN32
+ wchar_t *wfilename = g_utf8_to_utf16 (filename, -1, NULL, NULL, NULL);
+ int retval;
+ int save_errno;
+
+ if (wfilename == NULL)
+ {
+ errno = EINVAL;
+ return -1;
+ }
+
+ retval = _wremove (wfilename);
+ if (retval == -1)
+ retval = _wrmdir (wfilename);
+ save_errno = errno;
+
+ g_free (wfilename);
+
+ errno = save_errno;
+ return retval;
+#else
+ return remove (filename);
+#endif
+}
+
+/**
+ * g_fopen:
+ * @filename: a pathname in the GLib file name encoding (UTF-8 on Windows)
+ * @mode: a string describing the mode in which the file should be
+ * opened
+ *
+ * A wrapper for the POSIX fopen() function. The fopen() function opens
+ * a file and associates a new stream with it.
+ *
+ * See the C library manual for more details about fopen().
+ *
+ * Returns: A <type>FILE</type> pointer if the file was successfully
+ * opened, or %NULL if an error occurred
+ *
+ * Since: 2.6
+ */
+FILE *
+ws_stdio_fopen (const gchar *filename,
+ const gchar *mode)
+{
+#ifdef _WIN32
+ wchar_t *wfilename = g_utf8_to_utf16 (filename, -1, NULL, NULL, NULL);
+ wchar_t *wmode;
+ FILE *retval;
+ int save_errno;
+
+ if (wfilename == NULL)
+ {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ wmode = g_utf8_to_utf16 (mode, -1, NULL, NULL, NULL);
+
+ if (wmode == NULL)
+ {
+ g_free (wfilename);
+ errno = EINVAL;
+ return NULL;
+ }
+
+ retval = _wfopen (wfilename, wmode);
+ save_errno = errno;
+
+ g_free (wfilename);
+ g_free (wmode);
+
+ errno = save_errno;
+ return retval;
+#else
+ return fopen (filename, mode);
+#endif
+}
+
+/**
+ * g_freopen:
+ * @filename: a pathname in the GLib file name encoding (UTF-8 on Windows)
+ * @mode: a string describing the mode in which the file should be
+ * opened
+ * @stream: an existing stream which will be reused, or %NULL
+ *
+ * A wrapper for the POSIX freopen() function. The freopen() function
+ * opens a file and associates it with an existing stream.
+ *
+ * See the C library manual for more details about freopen().
+ *
+ * Returns: A <type>FILE</type> pointer if the file was successfully
+ * opened, or %NULL if an error occurred.
+ *
+ * Since: 2.6
+ */
+FILE *
+ws_stdio_freopen (const gchar *filename,
+ const gchar *mode,
+ FILE *stream)
+{
+#ifdef _WIN32
+ wchar_t *wfilename = g_utf8_to_utf16 (filename, -1, NULL, NULL, NULL);
+ wchar_t *wmode;
+ FILE *retval;
+ int save_errno;
+
+ if (wfilename == NULL)
+ {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ wmode = g_utf8_to_utf16 (mode, -1, NULL, NULL, NULL);
+
+ if (wmode == NULL)
+ {
+ g_free (wfilename);
+ errno = EINVAL;
+ return NULL;
+ }
+
+ retval = _wfreopen (wfilename, wmode, stream);
+ save_errno = errno;
+
+ g_free (wfilename);
+ g_free (wmode);
+
+ errno = save_errno;
+ return retval;
+#else
+ return freopen (filename, mode, stream);
+#endif
+}
+
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