mirror of
https://github.com/DrBeef/JKXR.git
synced 2024-12-02 17:12:47 +00:00
4597b03873
Opens in Android Studio but haven't even tried to build it yet (it won't.. I know that much!)
141 lines
3.6 KiB
C
141 lines
3.6 KiB
C
/* $NiH: mkstemp.c,v 1.3 2006/04/23 14:51:45 wiz Exp $ */
|
||
|
||
/* Adapted from NetBSB libc by Dieter Baron */
|
||
|
||
/* NetBSD: gettemp.c,v 1.13 2003/12/05 00:57:36 uebayasi Exp */
|
||
|
||
/*
|
||
* 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.
|
||
* 3. 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.
|
||
*/
|
||
|
||
#include <sys/types.h>
|
||
#include <sys/stat.h>
|
||
|
||
#include <assert.h>
|
||
#include <ctype.h>
|
||
#include <errno.h>
|
||
#include <fcntl.h>
|
||
#include <stdio.h>
|
||
#include <stdlib.h>
|
||
#include <unistd.h>
|
||
|
||
#ifndef O_BINARY
|
||
#define O_BINARY 0
|
||
#endif
|
||
|
||
|
||
|
||
int
|
||
_zip_mkstemp(char *path)
|
||
{
|
||
int fd;
|
||
char *start, *trv;
|
||
struct stat sbuf;
|
||
pid_t pid;
|
||
|
||
/* To guarantee multiple calls generate unique names even if
|
||
the file is not created. 676 different possibilities with 7
|
||
or more X's, 26 with 6 or less. */
|
||
static char xtra[2] = "aa";
|
||
int xcnt = 0;
|
||
|
||
pid = getpid();
|
||
|
||
/* Move to end of path and count trailing X's. */
|
||
for (trv = path; *trv; ++trv)
|
||
if (*trv == 'X')
|
||
xcnt++;
|
||
else
|
||
xcnt = 0;
|
||
|
||
/* Use at least one from xtra. Use 2 if more than 6 X's. */
|
||
if (*(trv - 1) == 'X')
|
||
*--trv = xtra[0];
|
||
if (xcnt > 6 && *(trv - 1) == 'X')
|
||
*--trv = xtra[1];
|
||
|
||
/* Set remaining X's to pid digits with 0's to the left. */
|
||
while (*--trv == 'X') {
|
||
*trv = (pid % 10) + '0';
|
||
pid /= 10;
|
||
}
|
||
|
||
/* update xtra for next call. */
|
||
if (xtra[0] != 'z')
|
||
xtra[0]++;
|
||
else {
|
||
xtra[0] = 'a';
|
||
if (xtra[1] != 'z')
|
||
xtra[1]++;
|
||
else
|
||
xtra[1] = 'a';
|
||
}
|
||
|
||
/*
|
||
* check the target directory; if you have six X's and it
|
||
* doesn't exist this runs for a *very* long time.
|
||
*/
|
||
for (start = trv + 1;; --trv) {
|
||
if (trv <= path)
|
||
break;
|
||
if (*trv == '/') {
|
||
*trv = '\0';
|
||
if (stat(path, &sbuf))
|
||
return (0);
|
||
if (!S_ISDIR(sbuf.st_mode)) {
|
||
errno = ENOTDIR;
|
||
return (0);
|
||
}
|
||
*trv = '/';
|
||
break;
|
||
}
|
||
}
|
||
|
||
for (;;) {
|
||
if ((fd=open(path, O_CREAT|O_EXCL|O_RDWR|O_BINARY, 0600)) >= 0)
|
||
return (fd);
|
||
if (errno != EEXIST)
|
||
return (0);
|
||
|
||
/* tricky little algorithm for backward compatibility */
|
||
for (trv = start;;) {
|
||
if (!*trv)
|
||
return (0);
|
||
if (*trv == 'z')
|
||
*trv++ = 'a';
|
||
else {
|
||
if (isdigit((unsigned char)*trv))
|
||
*trv = 'a';
|
||
else
|
||
++*trv;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
/*NOTREACHED*/
|
||
}
|