1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 * Copyright (c) 1987, 1993
18 * The Regents of the University of California. All rights reserved.
20 * Redistribution and use in source and binary forms, with or without
21 * modification, are permitted provided that the following conditions
23 * 1. Redistributions of source code must retain the above copyright
24 * notice, this list of conditions and the following disclaimer.
25 * 2. Redistributions in binary form must reproduce the above copyright
26 * notice, this list of conditions and the following disclaimer in the
27 * documentation and/or other materials provided with the distribution.
28 * 3. All advertising materials mentioning features or use of this software
29 * must display the following acknowledgement:
30 * This product includes software developed by the University of
31 * California, Berkeley and its contributors.
32 * 4. Neither the name of the University nor the names of its contributors
33 * may be used to endorse or promote products derived from this software
34 * without specific prior written permission.
36 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
37 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
39 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
40 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
41 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
42 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
43 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
44 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
45 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
49 #include "apr_private.h"
50 #include "apr_file_io.h" /* prototype of apr_mkstemp() */
51 #include "apr_strings.h" /* prototype of apr_mkstemp() */
52 #include "apr_arch_file_io.h" /* prototype of apr_mkstemp() */
53 #include "apr_portable.h" /* for apr_os_file_put() */
54 #include "apr_arch_inherit.h"
58 #if defined(SVR4) || defined(WIN32) || defined(NETWARE)
64 #define arc4random() rand()
65 #define seedrandom(a) srand(a)
70 #define arc4random() random()
71 #define seedrandom(a) srandom(a)
74 #if APR_HAVE_SYS_TYPES_H
75 #include <sys/types.h>
77 #if APR_HAVE_SYS_STAT_H
91 static const unsigned char padchar[] =
92 "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
93 static apr_uint32_t randseed=0;
95 static int gettemp(char *path, apr_file_t **doopen, apr_int32_t flags, apr_pool_t *p)
97 register char *start, *trv, *suffp;
101 apr_uint32_t randnum;
104 randseed = (int)apr_time_now();
105 seedrandom(randseed);
108 for (trv = path; *trv; ++trv)
116 /* Fill space with random characters */
117 while (*trv == 'X') {
118 randnum = arc4random() % (sizeof(padchar) - 1);
119 *trv-- = padchar[randnum];
124 * check the target directory.
131 rv = apr_stat(&sbuf, path, APR_FINFO_TYPE, p);
133 if (rv != APR_SUCCESS)
135 if (sbuf.filetype != APR_DIR) {
143 if ((rv = apr_file_open(doopen, path, flags,
144 APR_UREAD | APR_UWRITE, p)) == APR_SUCCESS)
146 if (!APR_STATUS_IS_EEXIST(rv))
149 /* If we have a collision, cycle through the space of filenames */
150 for (trv = start;;) {
151 if (*trv == '\0' || trv == suffp)
152 return APR_EINVAL; /* XXX: is this the correct return code? */
153 pad = strchr((char *)padchar, *trv);
154 if (pad == NULL || !*++pad) {
168 #if APR_HAVE_STDLIB_H
169 #include <stdlib.h> /* for mkstemp() - Single Unix */
171 #if APR_HAVE_UNISTD_H
172 #include <unistd.h> /* for mkstemp() - FreeBSD */
174 #endif /* !defined(HAVE_MKSTEMP) */
176 APR_DECLARE(apr_status_t) apr_file_mktemp(apr_file_t **fp, char *template, apr_int32_t flags, apr_pool_t *p)
181 flags = (!flags) ? APR_FOPEN_CREATE | APR_FOPEN_READ | APR_FOPEN_WRITE | APR_FOPEN_EXCL |
182 APR_FOPEN_DELONCLOSE : flags;
184 return gettemp(template, fp, flags, p);
187 #ifdef HAVE_MKSTEMP64
188 fd = mkstemp64(template);
190 fd = mkstemp(template);
196 /* XXX: We must reset several flags values as passed-in, since
197 * mkstemp didn't subscribe to our preference flags.
199 * We either have to unset the flags, or fix up the fd and other
200 * xthread and inherit bits appropriately. Since gettemp() above
201 * calls apr_file_open, our flags are respected in that code path.
203 apr_os_file_put(fp, &fd, flags, p);
204 (*fp)->fname = apr_pstrdup(p, template);
206 if (!(flags & APR_FOPEN_NOCLEANUP)) {
209 if ((flags = fcntl(fd, F_GETFD)) == -1)
213 if (fcntl(fd, F_SETFD, flags) == -1)
216 apr_pool_cleanup_register((*fp)->pool, (void *)(*fp),
217 apr_unix_file_cleanup,
218 apr_unix_child_file_cleanup);