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Diffstat (limited to '')
-rw-r--r-- | security/nss/lib/dbm/src/mktemp.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/security/nss/lib/dbm/src/mktemp.c b/security/nss/lib/dbm/src/mktemp.c new file mode 100644 index 0000000000..b668ece182 --- /dev/null +++ b/security/nss/lib/dbm/src/mktemp.c @@ -0,0 +1,149 @@ +/* + * 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. ***REMOVED*** - see + * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change + * 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. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)mktemp.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ + +#ifdef macintosh +#include <unix.h> +#else +#include <sys/types.h> +#include <sys/stat.h> +#endif +#include <fcntl.h> +#include <errno.h> +#include <stdio.h> +#include <ctype.h> +#include "mcom_db.h" + +#ifndef _WINDOWS +#include <unistd.h> +#endif + +#ifdef _WINDOWS +#include <process.h> +#include "winfile.h" +#endif + +static int _gettemp(char *path, register int *doopen, int extraFlags); + +int +mkstemp(char *path) +{ +#ifdef XP_OS2 + FILE *temp = tmpfile(); + + return (temp ? fileno(temp) : -1); +#else + int fd; + + return (_gettemp(path, &fd, 0) ? fd : -1); +#endif +} + +int +mkstempflags(char *path, int extraFlags) +{ + int fd; + + return (_gettemp(path, &fd, extraFlags) ? fd : -1); +} + +/* NB: This routine modifies its input string, and does not always restore it. +** returns 1 on success, 0 on failure. +*/ +static int +_gettemp(char *path, register int *doopen, int extraFlags) +{ + register char *start, *trv; + struct stat sbuf; + unsigned int pid; + + pid = getpid(); + for (trv = path; *trv; ++trv) + ; /* extra X's get set to 0's */ + while (*--trv == 'X') { + *trv = (pid % 10) + '0'; + pid /= 10; + } + + /* + * 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) { + char saved; + if (trv <= path) + break; + saved = *trv; + if (saved == '/' || saved == '\\') { + int rv; + *trv = '\0'; + rv = stat(path, &sbuf); + *trv = saved; + if (rv) + 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 | extraFlags, 0600)) >= 0) + return (1); + if (errno != EEXIST) + return (0); + } else if (stat(path, &sbuf)) + return (errno == ENOENT ? 1 : 0); + + /* tricky little algorithm for backward compatibility */ + for (trv = start;;) { + if (!*trv) + return (0); + if (*trv == 'z') + *trv++ = 'a'; + else { + if (isdigit(*trv)) + *trv = 'a'; + else + ++*trv; + break; + } + } + } + /*NOTREACHED*/ +} |