/*

 * 

 * Copyright (c) 1987, 1993

 *	The Regents of the University of California.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 4. Neither the name of the University nor the names of its contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 * * Portions Copyright (c) 2005-2008 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. 

 */

#if defined(LIBC_SCCS) && !defined(lint)

static char sccsid[] = "@(#)mktemp.c	8.1 (Berkeley) 6/4/93";

#endif /* LIBC_SCCS and not lint */

#include <sys/cdefs.h>

__FBSDID("$FreeBSD: src/lib/libc/stdio/mktemp.c,v 1.28 2003/02/16 17:29:10 nectar Exp $");

#include "namespace.h"

#include <sys/types.h>

#include <sys/stat.h>

#include <errno.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <ctype.h>

#include <unistd.h>

#include "un-namespace.h"

#include <fcntl.h>

#include "common_def.h"

#ifndef __SYMBIAN32__

	char *_mktemp(char *);

	static int _gettemp(char *, int *, int, int);

#else

	// _mktempfile accepts an extra parameter for flag 

	// flag will be O_TMPFILE for a call by tmpfile and 0 for tempnam and mkstemp

	char *_mktemp(char *, int);

	static int _gettemp(char *, int *, int, int, int);

	int	_mktmpfile(char *, int);

#endif

static const unsigned char padchar[] =

"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";

#ifdef __SYMBIAN_COMPILE_UNUSED__

int

mkstemps(path, slen)

	char *path;

	int slen;

{

	int fd;

	return (_gettemp(path, &fd, 0, slen) ? fd : -1);

}

#endif

EXPORT_C

int

mkstemp(path)

	char *path;

{

	int fd;

	#ifndef __SYMBIAN32__

		return (_gettemp(path, &fd, 0, 0) ? fd : -1);

	#else

		return (_gettemp(path, &fd, 0, 0, 0) ? fd : -1);

	#endif	

}

#ifdef __SYMBIAN_COMPILE_UNUSED__

char *

mkdtemp(path)

	char *path;

{

	return (_gettemp(path, (int *)NULL, 1, 0) ? path : (char *)NULL);

}

#endif

#ifndef __SYMBIAN32__

	char *

	_mktemp(path)

		char *path;

#else

	char *

	_mktemp(path, flag)

		char *path;

		int flag;

#endif	//__SYMBIAN32__

{	

	#ifndef __SYMBIAN32__	

		return (_gettemp(path, (int *)NULL, 0, 0) ? path : (char *)NULL);

	#else

		return (_gettemp(path, (int *)NULL, 0, 0, flag) ? path : (char *)NULL);

	#endif

}

#ifndef __SYMBIAN32__

__warn_references(mktemp,

    "warning: mktemp() possibly used unsafely; consider using mkstemp()");

#endif //__SYMBIAN32__

#ifdef __SYMBIAN_COMPILE_UNUSED__

char *

mktemp(path)

	char *path;

{

	return (_mktemp(path));

}

#endif

#ifdef __SYMBIAN32__

	int

	_mktmpfile(buf, flag)

	char *buf;

	int flag;

		{

		int fd;

		return (_gettemp(buf, &fd, 0, 0, flag) ? fd : -1);

		}

#endif //__SYMBIAN32__

#ifdef __SYMBIAN32__

static int

_gettemp(path, doopen, domkdir, slen, sflag)

	char *path;

	int *doopen;

	int domkdir;

	int slen;

	int sflag;

#else

_gettemp(path, doopen, domkdir, slen)

	char *path;

	int *doopen;

	int domkdir;

	int slen;

#endif //__SYMBIAN32__

{

	char *start, *trv, *suffp;

	char *pad;

	struct stat sbuf;

	int rval;

	uint32_t rand;

	#ifdef __SYMBIAN32__

	int count;

	size_t len = strlen(path);

	#endif //__SYMBIAN32__

	if (doopen != NULL && domkdir) {

		errno = EINVAL;

		return (0);

	}

#ifdef __SYMBIAN32__	

	// A single mkdir call introduced below instead of two separate 

	// calls from tempnam.c and tmpfile.c

	if (sflag)

		{		

		char *f = P_tmpdir;

		if (mkdir(f, 0666) == -1)

			{

			if (errno != EEXIST)

				{

				return -1;		//return from here	

				}

			}

		}

#endif//__SYMBIAN32__

	for (trv = path; *trv != '\0'; ++trv)

		;

	trv -= slen;

	suffp = trv;

	--trv;

	#ifdef __SYMBIAN32__

	if (trv < path || len < 6 || strcmp(&path[len - 6], "XXXXXX")) {

	#else

	if (trv < path) {

	#endif //__SYMBIAN32__

		errno = EINVAL;

		return (0);

	}

	/* Fill space with random characters */

	#ifndef __SYMBIAN32__

	while (trv >= path && *trv == 'X') {

	#else

	count = 0;

	while (trv >= path && count < 6) {

	#endif //__SYMBIAN32__

		rand = arc4random() % (sizeof(padchar) - 1);

		*trv-- = padchar[rand];

		#ifdef __SYMBIAN32__	

		count++;

		#endif //__SYMBIAN32__

	}

	start = trv + 1;

	/*

	 * check the target directory.

	 */

	if (doopen != NULL || domkdir) {

		for (; trv > path; --trv) {

			if (*trv == '/') {

				*trv = '\0';

				rval = stat(path, &sbuf);

				*trv = '/';

				if (rval != 0)

					return (0);

				if (!S_ISDIR(sbuf.st_mode)) {

					errno = ENOTDIR;

					return (0);

				}

				break;

			}

		}

	}

	for (;;) {

		if (doopen) {

		#ifndef __SYMBIAN32__

			if ((*doopen =

			    _open(path, O_CREAT|O_EXCL|O_RDWR, 0600)) >= 0)

		#else

			if ((*doopen =

			    _open(path, O_CREAT|O_EXCL|O_RDWR|sflag, 0600)) >= 0)

		#endif//__SYMBIAN32__

				return (1);

			if (errno != EEXIST)

				return (0);

		} else if (domkdir) {

			if (mkdir(path, 0700) == 0)

				return (1);

			if (errno != EEXIST)

				return (0);

		} else if (lstat(path, &sbuf))

			return (errno == ENOENT);

		/* If we have a collision, cycle through the space of filenames */

		for (trv = start;;) {

			if (*trv == '\0' || trv == suffp)

				return (0);

			#ifdef __SYMBIAN32__

			pad = strchr((const char *)padchar, *trv);

			#else

			pad = strchr(padchar, *trv);

			#endif //__SYMBIAN32__

			if (pad == NULL || *++pad == '\0')

				*trv++ = padchar[0];

			else {

				*trv++ = *pad;

				break;

			}

		}

	}

	/*NOTREACHED*/

}