/* +----------------------------------------------------------------------+ | PHP Version 7 | +----------------------------------------------------------------------+ | Copyright (c) 1997-2015 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 | +----------------------------------------------------------------------+ */ /* $Id$ */ #include "php.h" #include #include #include #include #ifdef PHP_WIN32 #define O_RDONLY _O_RDONLY #include "win32/param.h" #include "win32/winutil.h" #elif defined(NETWARE) #ifdef USE_WINSOCK #include #else #include #endif #include #else #include #include #include #include #if HAVE_ARPA_INET_H #include #endif #endif #ifdef HAVE_SYS_TIME_H #include #endif #ifdef HAVE_SYS_FILE_H #include #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; char opened_path[MAXPATHLEN]; 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, (const int)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 = (int)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 = "/"; } if (snprintf(opened_path, MAXPATHLEN, "%s%s%sXXXXXX", new_state.cwd, trailing_slash, pfx) >= MAXPATHLEN) { efree(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... */ if (VCWD_CHMOD(opened_path, 0600)) { efree(new_state.cwd); return -1; } 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) { *opened_path_p = zend_string_init(opened_path, strlen(opened_path), 0); } 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) { int len = (int)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. */ { char sTemp[MAX_PATH]; DWORD len = GetTempPath(sizeof(sTemp),sTemp); assert(0 < len); /* should *never* fail! */ if (sTemp[len - 1] == DEFAULT_SLASH) { PG(php_sys_temp_dir) = estrndup(sTemp, len - 1); } else { PG(php_sys_temp_dir) = estrndup(sTemp, len); } return PG(php_sys_temp_dir); } #else /* On Unix use the (usual) TMPDIR environment variable. */ { char* s = getenv("TMPDIR"); if (s && *s) { int 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, zend_bool open_basedir_check) { 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))) { 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. */ 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 */