diff options
Diffstat (limited to 'libc/stdio/mktemp.c')
| -rw-r--r-- | libc/stdio/mktemp.c | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/libc/stdio/mktemp.c b/libc/stdio/mktemp.c deleted file mode 100644 index 951f803..0000000 --- a/libc/stdio/mktemp.c +++ /dev/null @@ -1,184 +0,0 @@ -/* $OpenBSD: mktemp.c,v 1.19 2005/08/08 08:05:36 espie 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 <fcntl.h> -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> -#include <ctype.h> -#include <unistd.h> - -static int _gettemp(char *, int *, int, int); - -extern uint32_t arc4random(); - -int -mkstemps(char *path, int slen) -{ - int fd; - - return (_gettemp(path, &fd, 0, slen) ? fd : -1); -} - -int -mkstemp(char *path) -{ - int fd; - - return (_gettemp(path, &fd, 0, 0) ? fd : -1); -} - -char * -mkdtemp(char *path) -{ - return(_gettemp(path, (int *)NULL, 1, 0) ? path : (char *)NULL); -} - -char *_mktemp(char *); - -char * -_mktemp(char *path) -{ - return(_gettemp(path, (int *)NULL, 0, 0) ? path : (char *)NULL); -} - -__warn_references(mktemp, - "warning: mktemp() possibly used unsafely; consider using mkstemp()"); - -char * -mktemp(char *path) -{ - return(_mktemp(path)); -} - - -static int -_gettemp(char *path, int *doopen, int domkdir, int slen) -{ - char *start, *trv, *suffp; - struct stat sbuf; - int rval; - pid_t pid; - - if (doopen && domkdir) { - errno = EINVAL; - return(0); - } - - for (trv = path; *trv; ++trv) - ; - trv -= slen; - suffp = trv; - --trv; - if (trv < path) { - errno = EINVAL; - return (0); - } - pid = getpid(); - while (trv >= path && *trv == 'X' && pid != 0) { - *trv-- = (pid % 10) + '0'; - pid /= 10; - } - while (trv >= path && *trv == 'X') { - char c; - - pid = (arc4random() & 0xffff) % (26+26); - if (pid < 26) - c = pid + 'A'; - else - c = (pid - 26) + 'a'; - *trv-- = c; - } - start = trv + 1; - - /* - * check the target directory; if you have six X's and it - * doesn't exist this runs for a *very* long time. - */ - if (doopen || domkdir) { - for (;; --trv) { - if (trv <= path) - break; - 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) { - if ((*doopen = - open(path, O_CREAT|O_EXCL|O_RDWR, 0600)) >= 0) - 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 ? 1 : 0); - - /* tricky little algorithm for backward compatibility */ - for (trv = start;;) { - if (!*trv) - return (0); - if (*trv == 'Z') { - if (trv == suffp) - return (0); - *trv++ = 'a'; - } else { - if (isdigit(*trv)) - *trv = 'a'; - else if (*trv == 'z') /* inc from z to A */ - *trv = 'A'; - else { - if (trv == suffp) - return (0); - ++*trv; - } - break; - } - } - } - /*NOTREACHED*/ -} |