diff options
Diffstat (limited to 'libc/upstream-freebsd')
| -rw-r--r-- | libc/upstream-freebsd/lib/libc/stdio/mktemp.c | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/libc/upstream-freebsd/lib/libc/stdio/mktemp.c b/libc/upstream-freebsd/lib/libc/stdio/mktemp.c deleted file mode 100644 index 58783dd..0000000 --- a/libc/upstream-freebsd/lib/libc/stdio/mktemp.c +++ /dev/null @@ -1,191 +0,0 @@ -/* - * 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. - */ - -#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("$FreeBSD$"); - -#include "namespace.h" -#include <sys/param.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <ctype.h> -#include <unistd.h> -#include "un-namespace.h" - -char *_mktemp(char *); - -static int _gettemp(char *, int *, int, int); - -static const unsigned char padchar[] = -"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; - -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 *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, *carryp; - char *pad; - struct stat sbuf; - int rval; - uint32_t rand; - char carrybuf[MAXPATHLEN]; - - if ((doopen != NULL && domkdir) || slen < 0) { - errno = EINVAL; - return (0); - } - - for (trv = path; *trv != '\0'; ++trv) - ; - if (trv - path >= MAXPATHLEN) { - errno = ENAMETOOLONG; - return (0); - } - trv -= slen; - suffp = trv; - --trv; - if (trv < path || NULL != strchr(suffp, '/')) { - errno = EINVAL; - return (0); - } - - /* Fill space with random characters */ - while (trv >= path && *trv == 'X') { - rand = arc4random_uniform(sizeof(padchar) - 1); - *trv-- = padchar[rand]; - } - start = trv + 1; - - /* save first combination of random characters */ - memcpy(carrybuf, start, suffp - start); - - /* - * 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) { - 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); - - /* If we have a collision, cycle through the space of filenames */ - for (trv = start, carryp = carrybuf;;) { - /* have we tried all possible permutations? */ - if (trv == suffp) - return (0); /* yes - exit with EEXIST */ - pad = strchr(padchar, *trv); - if (pad == NULL) { - /* this should never happen */ - errno = EIO; - return (0); - } - /* increment character */ - *trv = (*++pad == '\0') ? padchar[0] : *pad; - /* carry to next position? */ - if (*trv == *carryp) { - /* increment position and loop */ - ++trv; - ++carryp; - } else { - /* try with new name */ - break; - } - } - } - /*NOTREACHED*/ -} |