<?php

/**

 * WordPress Direct Filesystem.

 *

 * @package WordPress

 * @subpackage Filesystem

 */

/**

 * WordPress Filesystem Class for direct PHP file and folder manipulation.

 *

 * @since 2.5

 * @package WordPress

 * @subpackage Filesystem

 * @uses WP_Filesystem_Base Extends class

 */

class WP_Filesystem_Direct extends WP_Filesystem_Base {

	/**

	 * constructor

	 *

	 * @param mixed $arg ignored argument

	 */

	function __construct($arg) {

		$this->method = 'direct';

		$this->errors = new WP_Error();

	}

	/**

	 * Reads entire file into a string

	 *

	 * @param string $file Name of the file to read.

	 * @return string|bool The function returns the read data or false on failure.

	 */

	function get_contents($file) {

		return @file_get_contents($file);

	}

	/**

	 * Reads entire file into an array

	 *

	 * @param string $file Path to the file.

	 * @return array|bool the file contents in an array or false on failure.

	 */

	function get_contents_array($file) {

		return @file($file);

	}

	/**

	 * Write a string to a file

	 *

	 * @param string $file Remote path to the file where to write the data.

	 * @param string $contents The data to write.

	 * @param int $mode (optional) The file permissions as octal number, usually 0644.

	 * @return bool False upon failure.

	 */

	function put_contents( $file, $contents, $mode = false ) {

		$fp = @fopen( $file, 'wb' );

		if ( ! $fp )

			return false;

		mbstring_binary_safe_encoding();

		$data_length = strlen( $contents );

		$bytes_written = fwrite( $fp, $contents );

		reset_mbstring_encoding();

		fclose( $fp );

		if ( $data_length !== $bytes_written )

			return false;

		$this->chmod( $file, $mode );

		return true;

	}

	/**

	 * Gets the current working directory

	 *

	 * @return string|bool the current working directory on success, or false on failure.

	 */

	function cwd() {

		return @getcwd();

	}

	/**

	 * Change directory

	 *

	 * @param string $dir The new current directory.

	 * @return bool Returns true on success or false on failure.

	 */

	function chdir($dir) {

		return @chdir($dir);

	}

	/**

	 * Changes file group

	 *

	 * @param string $file Path to the file.

	 * @param mixed $group A group name or number.

	 * @param bool $recursive (optional) If set True changes file group recursively. Defaults to False.

	 * @return bool Returns true on success or false on failure.

	 */

	function chgrp($file, $group, $recursive = false) {

		if ( ! $this->exists($file) )

			return false;

		if ( ! $recursive )

			return @chgrp($file, $group);

		if ( ! $this->is_dir($file) )

			return @chgrp($file, $group);

		// Is a directory, and we want recursive

		$file = trailingslashit($file);

		$filelist = $this->dirlist($file);

		foreach ($filelist as $filename)

			$this->chgrp($file . $filename, $group, $recursive);

		return true;

	}

	/**

	 * Changes filesystem permissions

	 *

	 * @param string $file Path to the file.

	 * @param int $mode (optional) The permissions as octal number, usually 0644 for files, 0755 for dirs.

	 * @param bool $recursive (optional) If set True changes file group recursively. Defaults to False.

	 * @return bool Returns true on success or false on failure.

	 */

	function chmod($file, $mode = false, $recursive = false) {

		if ( ! $mode ) {

			if ( $this->is_file($file) )

				$mode = FS_CHMOD_FILE;

			elseif ( $this->is_dir($file) )

				$mode = FS_CHMOD_DIR;

			else

				return false;

		}

		if ( ! $recursive || ! $this->is_dir($file) )

			return @chmod($file, $mode);

		// Is a directory, and we want recursive

		$file = trailingslashit($file);

		$filelist = $this->dirlist($file);

		foreach ( (array)$filelist as $filename => $filemeta)

			$this->chmod($file . $filename, $mode, $recursive);

		return true;

	}

	/**

	 * Changes file owner

	 *

	 * @param string $file Path to the file.

	 * @param mixed $owner A user name or number.

	 * @param bool $recursive (optional) If set True changes file owner recursively. Defaults to False.

	 * @return bool Returns true on success or false on failure.

	 */

	function chown($file, $owner, $recursive = false) {

		if ( ! $this->exists($file) )

			return false;

		if ( ! $recursive )

			return @chown($file, $owner);

		if ( ! $this->is_dir($file) )

			return @chown($file, $owner);

		// Is a directory, and we want recursive

		$filelist = $this->dirlist($file);

		foreach ($filelist as $filename) {

			$this->chown($file . '/' . $filename, $owner, $recursive);

		}

		return true;

	}

	/**

	 * Gets file owner

	 *

	 * @param string $file Path to the file.

	 * @return string|bool Username of the user or false on error.

	 */

	function owner($file) {

		$owneruid = @fileowner($file);

		if ( ! $owneruid )

			return false;

		if ( ! function_exists('posix_getpwuid') )

			return $owneruid;

		$ownerarray = posix_getpwuid($owneruid);

		return $ownerarray['name'];

	}

	/**

	 * Gets file permissions

	 *

	 * FIXME does not handle errors in fileperms()

	 *

	 * @param string $file Path to the file.

	 * @return string Mode of the file (last 4 digits).

	 */

	function getchmod($file) {

		return substr(decoct(@fileperms($file)),3);

	}

	function group($file) {

		$gid = @filegroup($file);

		if ( ! $gid )

			return false;

		if ( ! function_exists('posix_getgrgid') )

			return $gid;

		$grouparray = posix_getgrgid($gid);

		return $grouparray['name'];

	}

	function copy($source, $destination, $overwrite = false, $mode = false) {

		if ( ! $overwrite && $this->exists($destination) )

			return false;

		$rtval = copy($source, $destination);

		if ( $mode )

			$this->chmod($destination, $mode);

		return $rtval;

	}

	function move($source, $destination, $overwrite = false) {

		if ( ! $overwrite && $this->exists($destination) )

			return false;

		// try using rename first. if that fails (for example, source is read only) try copy

		if ( @rename($source, $destination) )

			return true;

		if ( $this->copy($source, $destination, $overwrite) && $this->exists($destination) ) {

			$this->delete($source);

			return true;

		} else {

			return false;

		}

	}

	function delete($file, $recursive = false, $type = false) {

		if ( empty( $file ) ) // Some filesystems report this as /, which can cause non-expected recursive deletion of all files in the filesystem.

			return false;

		$file = str_replace( '\\', '/', $file ); // for win32, occasional problems deleting files otherwise

		if ( 'f' == $type || $this->is_file($file) )

			return @unlink($file);

		if ( ! $recursive && $this->is_dir($file) )

			return @rmdir($file);

		// At this point it's a folder, and we're in recursive mode

		$file = trailingslashit($file);

		$filelist = $this->dirlist($file, true);

		$retval = true;

		if ( is_array( $filelist ) ) {

			foreach ( $filelist as $filename => $fileinfo ) {

				if ( ! $this->delete($file . $filename, $recursive, $fileinfo['type']) )

					$retval = false;

			}

		}

		if ( file_exists($file) && ! @rmdir($file) )

			$retval = false;

		return $retval;

	}

	function exists($file) {

		return @file_exists($file);

	}

	function is_file($file) {

		return @is_file($file);

	}

	function is_dir($path) {

		return @is_dir($path);

	}

	function is_readable($file) {

		return @is_readable($file);

	}

	function is_writable($file) {

		return @is_writable($file);

	}

	function atime($file) {

		return @fileatime($file);

	}

	function mtime($file) {

		return @filemtime($file);

	}

	function size($file) {

		return @filesize($file);

	}

	function touch($file, $time = 0, $atime = 0) {

		if ($time == 0)

			$time = time();

		if ($atime == 0)

			$atime = time();

		return @touch($file, $time, $atime);

	}

	function mkdir($path, $chmod = false, $chown = false, $chgrp = false) {

		// safe mode fails with a trailing slash under certain PHP versions.

		$path = untrailingslashit($path);

		if ( empty($path) )

			return false;

		if ( ! $chmod )

			$chmod = FS_CHMOD_DIR;

		if ( ! @mkdir($path) )

			return false;

		$this->chmod($path, $chmod);

		if ( $chown )

			$this->chown($path, $chown);

		if ( $chgrp )

			$this->chgrp($path, $chgrp);

		return true;

	}

	function rmdir($path, $recursive = false) {

		return $this->delete($path, $recursive);

	}

	function dirlist($path, $include_hidden = true, $recursive = false) {

		if ( $this->is_file($path) ) {

			$limit_file = basename($path);

			$path = dirname($path);

		} else {

			$limit_file = false;

		}

		if ( ! $this->is_dir($path) )

			return false;

		$dir = @dir($path);

		if ( ! $dir )

			return false;

		$ret = array();

		while (false !== ($entry = $dir->read()) ) {

			$struc = array();

			$struc['name'] = $entry;

			if ( '.' == $struc['name'] || '..' == $struc['name'] )

				continue;

			if ( ! $include_hidden && '.' == $struc['name'][0] )

				continue;

			if ( $limit_file && $struc['name'] != $limit_file)

				continue;

			$struc['perms'] 	= $this->gethchmod($path.'/'.$entry);

			$struc['permsn']	= $this->getnumchmodfromh($struc['perms']);

			$struc['number'] 	= false;

			$struc['owner']    	= $this->owner($path.'/'.$entry);

			$struc['group']    	= $this->group($path.'/'.$entry);

			$struc['size']    	= $this->size($path.'/'.$entry);

			$struc['lastmodunix']= $this->mtime($path.'/'.$entry);

			$struc['lastmod']   = date('M j',$struc['lastmodunix']);

			$struc['time']    	= date('h:i:s',$struc['lastmodunix']);

			$struc['type']		= $this->is_dir($path.'/'.$entry) ? 'd' : 'f';

			if ( 'd' == $struc['type'] ) {

				if ( $recursive )

					$struc['files'] = $this->dirlist($path . '/' . $struc['name'], $include_hidden, $recursive);

				else

					$struc['files'] = array();

			}

			$ret[ $struc['name'] ] = $struc;

		}

		$dir->close();

		unset($dir);

		return $ret;

	}

}