1999-04-17 00:37:12 +00:00
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/*
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+----------------------------------------------------------------------+
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2014-09-19 16:33:14 +00:00
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| PHP Version 7 |
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1999-04-17 00:37:12 +00:00
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+----------------------------------------------------------------------+
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2018-01-02 04:57:58 +00:00
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| Copyright (c) 1997-2018 The PHP Group |
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1999-04-17 00:37:12 +00:00
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+----------------------------------------------------------------------+
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2006-01-01 12:51:34 +00:00
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| This source file is subject to version 3.01 of the PHP license, |
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1999-07-16 13:13:16 +00:00
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| that is bundled with this package in the file LICENSE, and is |
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2003-06-10 20:04:29 +00:00
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| available through the world-wide-web at the following url: |
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2006-01-01 12:51:34 +00:00
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| http://www.php.net/license/3_01.txt |
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1999-07-16 13:13:16 +00:00
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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1999-04-17 00:37:12 +00:00
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+----------------------------------------------------------------------+
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2002-02-28 08:29:35 +00:00
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| Author: |
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1999-04-17 00:37:12 +00:00
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+----------------------------------------------------------------------+
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*/
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#include "php.h"
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1999-12-04 19:19:57 +00:00
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#include "php_filestat.h"
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1999-04-17 00:37:12 +00:00
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#include "php_globals.h"
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2000-06-13 18:07:19 +00:00
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#ifdef HAVE_SYMLINK
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1999-04-17 00:37:12 +00:00
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#include <stdlib.h>
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <sys/stat.h>
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#include <string.h>
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#if HAVE_PWD_H
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2000-02-11 15:59:30 +00:00
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#ifdef PHP_WIN32
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1999-04-17 00:37:12 +00:00
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#include "win32/pwd.h"
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#else
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#include <pwd.h>
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#endif
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#endif
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#if HAVE_GRP_H
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2000-02-11 15:59:30 +00:00
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#ifdef PHP_WIN32
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1999-04-17 00:37:12 +00:00
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#include "win32/grp.h"
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#else
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#include <grp.h>
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#endif
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#endif
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#include <errno.h>
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#include <ctype.h>
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1999-12-04 19:19:57 +00:00
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#include "php_link.h"
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2008-08-11 15:30:44 +00:00
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#include "php_string.h"
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1999-04-17 00:37:12 +00:00
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/* {{{ proto string readlink(string filename)
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Return the target of a symbolic link */
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1999-05-16 11:19:26 +00:00
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PHP_FUNCTION(readlink)
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1999-04-17 00:37:12 +00:00
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{
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2007-11-06 17:11:57 +00:00
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char *link;
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2014-08-27 13:31:48 +00:00
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size_t link_len;
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2002-10-21 23:35:29 +00:00
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char buff[MAXPATHLEN];
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2017-07-26 21:10:07 +00:00
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ssize_t ret;
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2002-11-04 23:24:15 +00:00
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2016-12-31 01:09:35 +00:00
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ZEND_PARSE_PARAMETERS_START(1, 1)
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Z_PARAM_PATH(link, link_len)
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ZEND_PARSE_PARAMETERS_END();
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1999-04-17 00:37:12 +00:00
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2014-12-13 22:06:14 +00:00
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if (php_check_open_basedir(link)) {
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2004-11-02 00:37:32 +00:00
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RETURN_FALSE;
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}
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2010-09-13 09:30:07 +00:00
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ret = php_sys_readlink(link, buff, MAXPATHLEN-1);
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2002-10-21 23:35:29 +00:00
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1999-04-17 00:37:12 +00:00
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if (ret == -1) {
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2014-12-13 22:06:14 +00:00
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php_error_docref(NULL, E_WARNING, "%s", strerror(errno));
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1999-04-17 00:37:12 +00:00
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RETURN_FALSE;
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}
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/* Append NULL to the end of the string */
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buff[ret] = '\0';
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2002-11-04 23:24:15 +00:00
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2018-03-06 18:19:18 +00:00
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RETURN_STRINGL(buff, ret);
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1999-04-17 00:37:12 +00:00
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}
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/* }}} */
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/* {{{ proto int linkinfo(string filename)
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Returns the st_dev field of the UNIX C stat structure describing the link */
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1999-05-16 11:19:26 +00:00
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PHP_FUNCTION(linkinfo)
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1999-04-17 00:37:12 +00:00
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{
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2007-11-06 17:11:57 +00:00
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char *link;
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2012-03-25 00:02:21 +00:00
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char *dirname;
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2015-01-30 21:19:23 +00:00
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size_t link_len;
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2014-08-26 09:23:25 +00:00
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zend_stat_t sb;
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1999-04-17 00:37:12 +00:00
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int ret;
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2016-12-31 01:09:35 +00:00
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ZEND_PARSE_PARAMETERS_START(1, 1)
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Z_PARAM_PATH(link, link_len)
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ZEND_PARSE_PARAMETERS_END();
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1999-04-17 00:37:12 +00:00
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2012-03-25 00:02:21 +00:00
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dirname = estrndup(link, link_len);
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2015-01-30 21:19:23 +00:00
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php_dirname(dirname, link_len);
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2012-03-25 00:02:21 +00:00
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2014-12-13 22:06:14 +00:00
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if (php_check_open_basedir(dirname)) {
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2012-03-25 00:02:21 +00:00
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efree(dirname);
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RETURN_FALSE;
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}
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2007-11-06 17:11:57 +00:00
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ret = VCWD_LSTAT(link, &sb);
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1999-04-17 00:37:12 +00:00
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if (ret == -1) {
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2014-12-13 22:06:14 +00:00
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php_error_docref(NULL, E_WARNING, "%s", strerror(errno));
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2012-03-25 00:02:21 +00:00
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efree(dirname);
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2014-08-25 17:24:55 +00:00
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RETURN_LONG(-1L);
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1999-04-17 00:37:12 +00:00
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}
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2001-09-05 06:55:37 +00:00
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2012-03-25 00:02:21 +00:00
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efree(dirname);
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2014-08-26 09:23:25 +00:00
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RETURN_LONG((zend_long) sb.st_dev);
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1999-04-17 00:37:12 +00:00
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}
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/* }}} */
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/* {{{ proto int symlink(string target, string link)
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Create a symbolic link */
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1999-05-16 11:19:26 +00:00
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PHP_FUNCTION(symlink)
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1999-04-17 00:37:12 +00:00
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{
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2007-11-06 17:11:57 +00:00
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char *topath, *frompath;
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2014-08-27 13:31:48 +00:00
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size_t topath_len, frompath_len;
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1999-04-17 00:37:12 +00:00
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int ret;
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2002-10-21 23:35:29 +00:00
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char source_p[MAXPATHLEN];
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char dest_p[MAXPATHLEN];
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2008-08-11 15:30:44 +00:00
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char dirname[MAXPATHLEN];
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size_t len;
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1999-04-17 00:37:12 +00:00
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2016-12-31 01:09:35 +00:00
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ZEND_PARSE_PARAMETERS_START(2, 2)
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Z_PARAM_PATH(topath, topath_len)
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Z_PARAM_PATH(frompath, frompath_len)
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ZEND_PARSE_PARAMETERS_END();
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2015-01-03 09:22:58 +00:00
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2014-12-13 22:06:14 +00:00
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if (!expand_filepath(frompath, source_p)) {
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php_error_docref(NULL, E_WARNING, "No such file or directory");
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2008-08-11 15:30:44 +00:00
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RETURN_FALSE;
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}
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memcpy(dirname, source_p, sizeof(source_p));
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len = php_dirname(dirname, strlen(dirname));
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1999-04-17 00:37:12 +00:00
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2014-12-13 22:06:14 +00:00
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if (!expand_filepath_ex(topath, dest_p, dirname, len)) {
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php_error_docref(NULL, E_WARNING, "No such file or directory");
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2006-09-16 18:30:03 +00:00
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RETURN_FALSE;
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}
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2002-10-21 23:35:29 +00:00
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2014-12-13 22:06:14 +00:00
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if (php_stream_locate_url_wrapper(source_p, NULL, STREAM_LOCATE_WRAPPERS_ONLY) ||
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2015-01-03 09:22:58 +00:00
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php_stream_locate_url_wrapper(dest_p, NULL, STREAM_LOCATE_WRAPPERS_ONLY) )
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2002-10-21 23:35:29 +00:00
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{
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2014-12-13 22:06:14 +00:00
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php_error_docref(NULL, E_WARNING, "Unable to symlink to a URL");
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2006-09-16 18:30:03 +00:00
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RETURN_FALSE;
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1999-04-17 00:37:12 +00:00
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}
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2001-09-05 06:55:37 +00:00
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2014-12-13 22:06:14 +00:00
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if (php_check_open_basedir(dest_p)) {
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2002-06-16 21:24:15 +00:00
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RETURN_FALSE;
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}
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2014-12-13 22:06:14 +00:00
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if (php_check_open_basedir(source_p)) {
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1999-11-28 16:23:30 +00:00
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RETURN_FALSE;
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}
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1999-04-17 00:37:12 +00:00
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2008-08-10 11:54:41 +00:00
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/* For the source, an expanded path must be used (in ZTS an other thread could have changed the CWD).
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* For the target the exact string given by the user must be used, relative or not, existing or not.
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* The target is relative to the link itself, not to the CWD. */
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ret = symlink(topath, source_p);
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1999-04-17 00:37:12 +00:00
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if (ret == -1) {
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2014-12-13 22:06:14 +00:00
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php_error_docref(NULL, E_WARNING, "%s", strerror(errno));
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1999-04-17 00:37:12 +00:00
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RETURN_FALSE;
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}
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2001-09-05 06:55:37 +00:00
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1999-04-17 00:37:12 +00:00
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RETURN_TRUE;
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}
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/* }}} */
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/* {{{ proto int link(string target, string link)
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Create a hard link */
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1999-05-16 11:19:26 +00:00
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PHP_FUNCTION(link)
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1999-04-17 00:37:12 +00:00
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{
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2007-11-06 17:11:57 +00:00
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char *topath, *frompath;
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2014-08-27 13:31:48 +00:00
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size_t topath_len, frompath_len;
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1999-04-17 00:37:12 +00:00
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int ret;
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2002-10-21 23:35:29 +00:00
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char source_p[MAXPATHLEN];
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char dest_p[MAXPATHLEN];
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1999-04-17 00:37:12 +00:00
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2016-12-31 01:09:35 +00:00
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ZEND_PARSE_PARAMETERS_START(2, 2)
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Z_PARAM_PATH(topath, topath_len)
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Z_PARAM_PATH(frompath, frompath_len)
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ZEND_PARSE_PARAMETERS_END();
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1999-04-17 00:37:12 +00:00
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2014-12-13 22:06:14 +00:00
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if (!expand_filepath(frompath, source_p) || !expand_filepath(topath, dest_p)) {
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php_error_docref(NULL, E_WARNING, "No such file or directory");
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2006-09-16 18:30:03 +00:00
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RETURN_FALSE;
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}
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2002-10-21 23:35:29 +00:00
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2014-12-13 22:06:14 +00:00
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if (php_stream_locate_url_wrapper(source_p, NULL, STREAM_LOCATE_WRAPPERS_ONLY) ||
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2015-01-03 09:22:58 +00:00
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php_stream_locate_url_wrapper(dest_p, NULL, STREAM_LOCATE_WRAPPERS_ONLY) )
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2002-10-21 23:35:29 +00:00
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{
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2014-12-13 22:06:14 +00:00
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php_error_docref(NULL, E_WARNING, "Unable to link to a URL");
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2006-09-16 18:30:03 +00:00
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RETURN_FALSE;
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1999-04-17 00:37:12 +00:00
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}
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2001-09-05 06:55:37 +00:00
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2014-12-13 22:06:14 +00:00
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if (php_check_open_basedir(dest_p)) {
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2002-06-16 21:24:15 +00:00
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RETURN_FALSE;
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}
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2014-12-13 22:06:14 +00:00
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if (php_check_open_basedir(source_p)) {
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1999-11-28 16:35:26 +00:00
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RETURN_FALSE;
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}
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1999-04-17 00:37:12 +00:00
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2002-11-15 16:34:16 +00:00
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#ifndef ZTS
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2007-11-06 17:11:57 +00:00
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ret = link(topath, frompath);
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2015-01-03 09:22:58 +00:00
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#else
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ret = link(dest_p, source_p);
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#endif
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1999-04-17 00:37:12 +00:00
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if (ret == -1) {
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2014-12-13 22:06:14 +00:00
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php_error_docref(NULL, E_WARNING, "%s", strerror(errno));
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1999-04-17 00:37:12 +00:00
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RETURN_FALSE;
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}
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2001-09-05 06:55:37 +00:00
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1999-04-17 00:37:12 +00:00
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RETURN_TRUE;
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}
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/* }}} */
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2000-06-13 18:07:19 +00:00
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#endif
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1999-04-17 00:37:12 +00:00
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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* End:
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2001-09-09 13:29:31 +00:00
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* vim600: noet sw=4 ts=4 fdm=marker
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* vim<600: noet sw=4 ts=4
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1999-04-17 00:37:12 +00:00
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*/
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