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/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2017 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "php.h"
#include "php_open_temporary_file.h"
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifdef PHP_WIN32
#define O_RDONLY _O_RDONLY
#include "win32/param.h"
#include "win32/winutil.h"
#else
#include <sys/param.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#if HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_SYS_FILE_H
#include <sys/file.h>
#endif
#if !defined(P_tmpdir)
#define P_tmpdir ""
#endif
/* {{{ php_do_open_temporary_file */
/* Loosely based on a tempnam() implementation by UCLA */
/*
* Copyright (c) 1988, 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 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.
*/
static int php_do_open_temporary_file(const char *path, const char *pfx, zend_string **opened_path_p)
{
char *trailing_slash;
#ifdef PHP_WIN32
char *opened_path = NULL;
size_t opened_path_len;
wchar_t *cwdw, *pfxw, pathw[MAXPATHLEN];
#else
char opened_path[MAXPATHLEN];
#endif
char cwd[MAXPATHLEN];
cwd_state new_state;
int fd = -1;
#ifndef HAVE_MKSTEMP
int open_flags = O_CREAT | O_TRUNC | O_RDWR
#ifdef PHP_WIN32
| _O_BINARY
#endif
;
#endif
if (!path || !path[0]) {
return -1;
}
#ifdef PHP_WIN32
if (!php_win32_check_trailing_space(pfx, strlen(pfx))) {
SetLastError(ERROR_INVALID_NAME);
return -1;
}
#endif
if (!VCWD_GETCWD(cwd, MAXPATHLEN)) {
cwd[0] = '\0';
}
new_state.cwd = estrdup(cwd);
new_state.cwd_length = strlen(cwd);
if (virtual_file_ex(&new_state, path, NULL, CWD_REALPATH)) {
efree(new_state.cwd);
return -1;
}
if (IS_SLASH(new_state.cwd[new_state.cwd_length - 1])) {
trailing_slash = "";
} else {
trailing_slash = "/";
}
#ifndef PHP_WIN32
if (snprintf(opened_path, MAXPATHLEN, "%s%s%sXXXXXX", new_state.cwd, trailing_slash, pfx) >= MAXPATHLEN) {
efree(new_state.cwd);
return -1;
}
#endif
#ifdef PHP_WIN32
cwdw = php_win32_ioutil_any_to_w(new_state.cwd);
pfxw = php_win32_ioutil_any_to_w(pfx);
if (!cwdw || !pfxw) {
free(cwdw);
free(pfxw);
efree(new_state.cwd);
return -1;
}
if (GetTempFileNameW(cwdw, pfxw, 0, pathw)) {
opened_path = php_win32_ioutil_conv_w_to_any(pathw, PHP_WIN32_CP_IGNORE_LEN, &opened_path_len);
if (!opened_path || opened_path_len >= MAXPATHLEN) {
free(cwdw);
free(pfxw);
efree(new_state.cwd);
return -1;
}
assert(strlen(opened_path) == opened_path_len);
/* Some versions of windows set the temp file to be read-only,
* which means that opening it will fail... */
if (VCWD_CHMOD(opened_path, 0600)) {
free(cwdw);
free(pfxw);
efree(new_state.cwd);
free(opened_path);
return -1;
}
fd = VCWD_OPEN_MODE(opened_path, open_flags, 0600);
}
free(cwdw);
free(pfxw);
#elif defined(HAVE_MKSTEMP)
fd = mkstemp(opened_path);
#else
if (mktemp(opened_path)) {
fd = VCWD_OPEN(opened_path, open_flags);
}
#endif
#ifdef PHP_WIN32
if (fd != -1 && opened_path_p) {
*opened_path_p = zend_string_init(opened_path, opened_path_len, 0);
}
free(opened_path);
#else
if (fd != -1 && opened_path_p) {
*opened_path_p = zend_string_init(opened_path, strlen(opened_path), 0);
}
#endif
efree(new_state.cwd);
return fd;
}
/* }}} */
/*
* Determine where to place temporary files.
*/
PHPAPI const char* php_get_temporary_directory(void)
{
/* Did we determine the temporary directory already? */
if (PG(php_sys_temp_dir)) {
return PG(php_sys_temp_dir);
}
/* Is there a temporary directory "sys_temp_dir" in .ini defined? */
{
char *sys_temp_dir = PG(sys_temp_dir);
if (sys_temp_dir) {
size_t len = strlen(sys_temp_dir);
if (len >= 2 && sys_temp_dir[len - 1] == DEFAULT_SLASH) {
PG(php_sys_temp_dir) = estrndup(sys_temp_dir, len - 1);
return PG(php_sys_temp_dir);
} else if (len >= 1 && sys_temp_dir[len - 1] != DEFAULT_SLASH) {
PG(php_sys_temp_dir) = estrndup(sys_temp_dir, len);
return PG(php_sys_temp_dir);
}
}
}
#ifdef PHP_WIN32
/* We can't count on the environment variables TEMP or TMP,
* and so must make the Win32 API call to get the default
* directory for temporary files. Note this call checks
* the environment values TMP and TEMP (in order) first.
*/
{
wchar_t sTemp[MAXPATHLEN];
char *tmp;
size_t len = GetTempPathW(MAXPATHLEN, sTemp);
if (!len) {
return NULL;
}
if (NULL == (tmp = php_win32_ioutil_conv_w_to_any(sTemp, len, &len))) {
return NULL;
}
PG(php_sys_temp_dir) = estrndup(tmp, len - 1);
free(tmp);
return PG(php_sys_temp_dir);
}
#else
/* On Unix use the (usual) TMPDIR environment variable. */
{
char* s = getenv("TMPDIR");
if (s && *s) {
size_t len = strlen(s);
if (s[len - 1] == DEFAULT_SLASH) {
PG(php_sys_temp_dir) = estrndup(s, len - 1);
} else {
PG(php_sys_temp_dir) = estrndup(s, len);
}
return PG(php_sys_temp_dir);
}
}
#ifdef P_tmpdir
/* Use the standard default temporary directory. */
if (P_tmpdir) {
PG(php_sys_temp_dir) = estrdup(P_tmpdir);
return PG(php_sys_temp_dir);
}
#endif
/* Shouldn't ever(!) end up here ... last ditch default. */
PG(php_sys_temp_dir) = estrdup("/tmp");
return PG(php_sys_temp_dir);
#endif
}
/* {{{ php_open_temporary_file
*
* Unlike tempnam(), the supplied dir argument takes precedence
* over the TMPDIR environment variable
* This function should do its best to return a file pointer to a newly created
* unique file, on every platform.
*/
PHPAPI int php_open_temporary_fd_ex(const char *dir, const char *pfx, zend_string **opened_path_p, uint32_t flags)
{
int fd;
const char *temp_dir;
if (!pfx) {
pfx = "tmp.";
}
if (opened_path_p) {
*opened_path_p = NULL;
}
if (!dir || *dir == '\0') {
def_tmp:
temp_dir = php_get_temporary_directory();
if (temp_dir && *temp_dir != '\0' && (!(flags & PHP_TMP_FILE_OPEN_BASEDIR_CHECK) || !php_check_open_basedir(temp_dir))) {
return php_do_open_temporary_file(temp_dir, pfx, opened_path_p);
} else {
return -1;
}
}
/* Try the directory given as parameter. */
fd = php_do_open_temporary_file(dir, pfx, opened_path_p);
if (fd == -1) {
/* Use default temporary directory. */
if (!(flags & PHP_TMP_FILE_SILENT)) {
php_error_docref(NULL, E_NOTICE, "file created in the system's temporary directory");
}
goto def_tmp;
}
return fd;
}
PHPAPI int php_open_temporary_fd(const char *dir, const char *pfx, zend_string **opened_path_p)
{
return php_open_temporary_fd_ex(dir, pfx, opened_path_p, 0);
}
PHPAPI FILE *php_open_temporary_file(const char *dir, const char *pfx, zend_string **opened_path_p)
{
FILE *fp;
int fd = php_open_temporary_fd(dir, pfx, opened_path_p);
if (fd == -1) {
return NULL;
}
fp = fdopen(fd, "r+b");
if (fp == NULL) {
close(fd);
}
return fp;
}
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: sw=4 ts=4 fdm=marker
* vim<600: sw=4 ts=4
*/