/* +----------------------------------------------------------------------+ | PHP Version 5 | +----------------------------------------------------------------------+ | Copyright (c) 1997-2007 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: php_open_temporary_file.c,v 1.34.2.1.2.10 2007/08/10 10:13:15 tony2001 Exp $ */ #include "php.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" #elif defined(NETWARE) #ifdef USE_WINSOCK #include <novsock2.h> #else #include <sys/socket.h> #endif #include <sys/param.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, char **opened_path_p TSRMLS_DC) { char *trailing_slash; char *opened_path; 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; } if (!VCWD_GETCWD(cwd, MAXPATHLEN)) { cwd[0] = '\0'; } new_state.cwd = strdup(cwd); new_state.cwd_length = strlen(cwd); if (virtual_file_ex(&new_state, path, NULL, CWD_REALPATH)) { free(new_state.cwd); return -1; } if (IS_SLASH(new_state.cwd[new_state.cwd_length - 1])) { trailing_slash = ""; } else { trailing_slash = "/"; } if (spprintf(&opened_path, 0, "%s%s%sXXXXXX", new_state.cwd, trailing_slash, pfx) >= MAXPATHLEN) { efree(opened_path); free(new_state.cwd); return -1; } #ifdef PHP_WIN32 if (GetTempFileName(new_state.cwd, pfx, 0, opened_path)) { /* Some versions of windows set the temp file to be read-only, * which means that opening it will fail... */ VCWD_CHMOD(opened_path, 0600); fd = VCWD_OPEN_MODE(opened_path, open_flags, 0600); } #elif defined(HAVE_MKSTEMP) fd = mkstemp(opened_path); #else if (mktemp(opened_path)) { fd = VCWD_OPEN(opened_path, open_flags); } #endif if (fd == -1 || !opened_path_p) { efree(opened_path); } else { *opened_path_p = opened_path; } free(new_state.cwd); return fd; } /* }}} */ /* Cache the chosen temporary directory. */ static char* temporary_directory; PHPAPI void php_shutdown_temporary_directory(void) { if (temporary_directory) { free(temporary_directory); temporary_directory = NULL; } } /* * Determine where to place temporary files. */ PHPAPI const char* php_get_temporary_directory(void) { /* Did we determine the temporary directory already? */ if (temporary_directory) { return temporary_directory; } #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. */ { char sTemp[MAX_PATH]; DWORD n = GetTempPath(sizeof(sTemp),sTemp); assert(0 < n); /* should *never* fail! */ temporary_directory = strdup(sTemp); return temporary_directory; } #else /* On Unix use the (usual) TMPDIR environment variable. */ { char* s = getenv("TMPDIR"); if (s) { temporary_directory = strdup(s); return temporary_directory; } } #ifdef P_tmpdir /* Use the standard default temporary directory. */ if (P_tmpdir) { temporary_directory = strdup(P_tmpdir); return temporary_directory; } #endif /* Shouldn't ever(!) end up here ... last ditch default. */ temporary_directory = strdup("/tmp"); return temporary_directory; #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, char **opened_path_p, zend_bool open_basedir_check TSRMLS_DC) { 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' && (!open_basedir_check || !php_check_open_basedir(temp_dir TSRMLS_CC))) { return php_do_open_temporary_file(temp_dir, pfx, opened_path_p TSRMLS_CC); } else { return -1; } } /* Try the directory given as parameter. */ fd = php_do_open_temporary_file(dir, pfx, opened_path_p TSRMLS_CC); if (fd == -1) { /* Use default temporary directory. */ goto def_tmp; } return fd; } PHPAPI int php_open_temporary_fd(const char *dir, const char *pfx, char **opened_path_p TSRMLS_DC) { return php_open_temporary_fd_ex(dir, pfx, opened_path_p, 0 TSRMLS_CC); } PHPAPI FILE *php_open_temporary_file(const char *dir, const char *pfx, char **opened_path_p TSRMLS_DC) { FILE *fp; int fd = php_open_temporary_fd(dir, pfx, opened_path_p TSRMLS_CC); 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 */