2cbce84d41
fix this, by providing required functions in the new file file_util.c - it's mostly copied from GLib (g_open alike - that take UTF8 as filename format but don't use msvcrt.dll V6 for this as the glib files do) "link" to these functions in file_util.h: #define eth_open eth_stdio_open revert changes (from SVN 20282) throughout the code related to these file functions which were introduced with the first tries of MSVC 2005 ... Hopefully I've done everything right with the new file_util.c ... svn path=/trunk/; revision=20402
148 lines
3.4 KiB
C
148 lines
3.4 KiB
C
/* tempfile.c
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* Routines to create temporary files
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <glib.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <errno.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include "file_util.h"
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#ifdef HAVE_WINDOWS_H
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#include <windows.h>
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#endif
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#include "tempfile.h"
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#include "mkstemp.h"
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static const char *
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setup_tmpdir(const char *dir)
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{
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size_t len = strlen(dir);
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char *newdir;
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/* Append path separator if necessary */
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if (len != 0 && dir[len - 1] == G_DIR_SEPARATOR) {
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return dir;
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}
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else {
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newdir = g_malloc(len + 2);
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strcpy(newdir, dir);
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strcat(newdir, G_DIR_SEPARATOR_S);
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return newdir;
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}
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}
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static int
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try_tempfile(char *namebuf, int namebuflen, const char *dir, const char *pfx)
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{
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static const char suffix[] = "XXXXXXXXXX";
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int namelen = strlen(dir) + strlen(pfx) + sizeof suffix;
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int old_umask;
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int tmp_fd;
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if (namebuflen < namelen) {
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/* Stick in a truncated name, so that if this error is
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reported with the file name, you at least get
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something. */
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g_snprintf(namebuf, namebuflen, "%s%s%s", dir, pfx, suffix);
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errno = ENAMETOOLONG;
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return -1;
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}
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strcpy(namebuf, dir);
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strcat(namebuf, pfx);
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strcat(namebuf, suffix);
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/* The Single UNIX Specification doesn't say that "mkstemp()"
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creates the temporary file with mode rw-------, so we
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won't assume that all UNIXes will do so; instead, we set
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the umask to 0077 to take away all group and other
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permissions, attempt to create the file, and then put
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the umask back. */
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old_umask = umask(0077);
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tmp_fd = mkstemp(namebuf);
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umask(old_umask);
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return tmp_fd;
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}
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static const char *tmpdir = NULL;
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#ifdef _WIN32
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static const char *temp = NULL;
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#endif
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static const char *E_tmpdir;
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#ifndef P_tmpdir
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#define P_tmpdir "/var/tmp"
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#endif
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int
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create_tempfile(char *namebuf, int namebuflen, const char *pfx)
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{
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char *dir;
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int fd;
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static gboolean initialized;
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if (!initialized) {
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if ((dir = getenv("TMPDIR")) != NULL)
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tmpdir = setup_tmpdir(dir);
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#ifdef _WIN32
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if ((dir = getenv("TEMP")) != NULL)
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temp = setup_tmpdir(dir);
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#endif
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E_tmpdir = setup_tmpdir(P_tmpdir);
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initialized = TRUE;
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}
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if (tmpdir != NULL) {
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fd = try_tempfile(namebuf, namebuflen, tmpdir, pfx);
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if (fd != -1)
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return fd;
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}
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#ifdef _WIN32
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if (temp != NULL) {
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fd = try_tempfile(namebuf, namebuflen, temp, pfx);
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if (fd != -1)
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return fd;
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}
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#endif
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fd = try_tempfile(namebuf, namebuflen, E_tmpdir, pfx);
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if (fd != -1)
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return fd;
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return try_tempfile(namebuf, namebuflen, G_DIR_SEPARATOR_S "tmp", pfx);
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}
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