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<?php
/**
* Base WordPress Filesystem.
*
* @package WordPress
* @subpackage Filesystem
*/
/**
* Base WordPress Filesystem class for which Filesystem implementations extend
*
* @since 2.5
*/
class WP_Filesystem_Base {
/**
* Whether to display debug data for the connection.
*
* @since 2.5
* @access public
* @var bool
*/
var $verbose = false;
/**
* Cached list of local filepaths to mapped remote filepaths.
*
* @since 2.7
* @access private
* @var array
*/
var $cache = array();
/**
* The Access method of the current connection, Set automatically.
*
* @since 2.5
* @access public
* @var string
*/
var $method = '';
/**
* Returns the path on the remote filesystem of ABSPATH
*
* @since 2.7
* @access public
* @return string The location of the remote path.
*/
function abspath() {
$folder = $this->find_folder(ABSPATH);
//Perhaps the FTP folder is rooted at the WordPress install, Check for wp-includes folder in root, Could have some false positives, but rare.
if ( ! $folder && $this->is_dir('/wp-includes') )
$folder = '/';
return $folder;
}
/**
* Returns the path on the remote filesystem of WP_CONTENT_DIR
*
* @since 2.7
* @access public
* @return string The location of the remote path.
*/
function wp_content_dir() {
return $this->find_folder(WP_CONTENT_DIR);
}
/**
* Returns the path on the remote filesystem of WP_PLUGIN_DIR
*
* @since 2.7
* @access public
*
* @return string The location of the remote path.
*/
function wp_plugins_dir() {
return $this->find_folder(WP_PLUGIN_DIR);
}
/**
* Returns the path on the remote filesystem of the Themes Directory
*
* @since 2.7
* @access public
*
* @return string The location of the remote path.
*/
function wp_themes_dir() {
return $this->wp_content_dir() . 'themes/';
}
/**
* Returns the path on the remote filesystem of WP_LANG_DIR
*
* @since 3.2.0
* @access public
*
* @return string The location of the remote path.
*/
function wp_lang_dir() {
return $this->find_folder(WP_LANG_DIR);
}
/**
* Locates a folder on the remote filesystem.
*
* Deprecated; use WP_Filesystem::abspath() or WP_Filesystem::wp_*_dir() methods instead.
*
* @since 2.5
* @deprecated 2.7
* @access public
*
* @param string $base The folder to start searching from
* @param bool $echo True to display debug information
* @return string The location of the remote path.
*/
function find_base_dir($base = '.', $echo = false) {
_deprecated_function(__FUNCTION__, '2.7', 'WP_Filesystem::abspath() or WP_Filesystem::wp_*_dir()' );
$this->verbose = $echo;
return $this->abspath();
}
/**
* Locates a folder on the remote filesystem.
*
* Deprecated; use WP_Filesystem::abspath() or WP_Filesystem::wp_*_dir() methods instead.
*
* @since 2.5
* @deprecated 2.7
* @access public
*
* @param string $base The folder to start searching from
* @param bool $echo True to display debug information
* @return string The location of the remote path.
*/
function get_base_dir($base = '.', $echo = false) {
_deprecated_function(__FUNCTION__, '2.7', 'WP_Filesystem::abspath() or WP_Filesystem::wp_*_dir()' );
$this->verbose = $echo;
return $this->abspath();
}
/**
* Locates a folder on the remote filesystem.
*
* Assumes that on Windows systems, Stripping off the Drive letter is OK
* Sanitizes \\ to / in windows filepaths.
*
* @since 2.7
* @access public
*
* @param string $folder the folder to locate
* @return string The location of the remote path.
*/
function find_folder($folder) {
if ( strpos($this->method, 'ftp') !== false ) {
$constant_overrides = array( 'FTP_BASE' => ABSPATH, 'FTP_CONTENT_DIR' => WP_CONTENT_DIR, 'FTP_PLUGIN_DIR' => WP_PLUGIN_DIR, 'FTP_LANG_DIR' => WP_LANG_DIR );
foreach ( $constant_overrides as $constant => $dir )
if ( defined($constant) && $folder === $dir )
return trailingslashit(constant($constant));
} elseif ( 'direct' == $this->method ) {
$folder = str_replace('\\', '/', $folder); //Windows path sanitisation
return trailingslashit($folder);
}
$folder = preg_replace('|^([a-z]{1}):|i', '', $folder); //Strip out windows drive letter if it's there.
$folder = str_replace('\\', '/', $folder); //Windows path sanitisation
if ( isset($this->cache[ $folder ] ) )
return $this->cache[ $folder ];
if ( $this->exists($folder) ) { //Folder exists at that absolute path.
$folder = trailingslashit($folder);
$this->cache[ $folder ] = $folder;
return $folder;
}
if ( $return = $this->search_for_folder($folder) )
$this->cache[ $folder ] = $return;
return $return;
}
/**
* Locates a folder on the remote filesystem.
*
* Expects Windows sanitized path
*
* @since 2.7
* @access private
*
* @param string $folder the folder to locate
* @param string $base the folder to start searching from
* @param bool $loop if the function has recursed, Internal use only
* @return string The location of the remote path.
*/
function search_for_folder($folder, $base = '.', $loop = false ) {
if ( empty( $base ) || '.' == $base )
$base = trailingslashit($this->cwd());
$folder = untrailingslashit($folder);
$folder_parts = explode('/', $folder);
$last_index = array_pop( array_keys( $folder_parts ) );
$last_path = $folder_parts[ $last_index ];
$files = $this->dirlist( $base );
foreach ( $folder_parts as $index => $key ) {
if ( $index == $last_index )
continue; //We want this to be caught by the next code block.
//Working from /home/ to /user/ to /wordpress/ see if that file exists within the current folder,
// If its found, change into it and follow through looking for it.
// If it cant find WordPress down that route, it'll continue onto the next folder level, and see if that matches, and so on.
// If it reaches the end, and still cant find it, it'll return false for the entire function.
if ( isset($files[ $key ]) ){
//Lets try that folder:
$newdir = trailingslashit(path_join($base, $key));
if ( $this->verbose )
printf( __('Changing to %s') . '<br/>', $newdir );
// only search for the remaining path tokens in the directory, not the full path again
$newfolder = implode( '/', array_slice( $folder_parts, $index + 1 ) );
if ( $ret = $this->search_for_folder( $newfolder, $newdir, $loop) )
return $ret;
}
}
//Only check this as a last resort, to prevent locating the incorrect install. All above procedures will fail quickly if this is the right branch to take.
if (isset( $files[ $last_path ] ) ) {
if ( $this->verbose )
printf( __('Found %s') . '<br/>', $base . $last_path );
return trailingslashit($base . $last_path);
}
if ( $loop )
return false; //Prevent this function from looping again.
//As an extra last resort, Change back to / if the folder wasn't found. This comes into effect when the CWD is /home/user/ but WP is at /var/www/.... mainly dedicated setups.
return $this->search_for_folder($folder, '/', true);
}
/**
* Returns the *nix style file permissions for a file
*
* From the PHP documentation page for fileperms()
*
* @link http://docs.php.net/fileperms
* @since 2.5
* @access public
*
* @param string $file string filename
* @return int octal representation of permissions
*/
function gethchmod($file){
$perms = $this->getchmod($file);
if (($perms & 0xC000) == 0xC000) // Socket
$info = 's';
elseif (($perms & 0xA000) == 0xA000) // Symbolic Link
$info = 'l';
elseif (($perms & 0x8000) == 0x8000) // Regular
$info = '-';
elseif (($perms & 0x6000) == 0x6000) // Block special
$info = 'b';
elseif (($perms & 0x4000) == 0x4000) // Directory
$info = 'd';
elseif (($perms & 0x2000) == 0x2000) // Character special
$info = 'c';
elseif (($perms & 0x1000) == 0x1000) // FIFO pipe
$info = 'p';
else // Unknown
$info = 'u';
// Owner
$info .= (($perms & 0x0100) ? 'r' : '-');
$info .= (($perms & 0x0080) ? 'w' : '-');
$info .= (($perms & 0x0040) ?
(($perms & 0x0800) ? 's' : 'x' ) :
(($perms & 0x0800) ? 'S' : '-'));
// Group
$info .= (($perms & 0x0020) ? 'r' : '-');
$info .= (($perms & 0x0010) ? 'w' : '-');
$info .= (($perms & 0x0008) ?
(($perms & 0x0400) ? 's' : 'x' ) :
(($perms & 0x0400) ? 'S' : '-'));
// World
$info .= (($perms & 0x0004) ? 'r' : '-');
$info .= (($perms & 0x0002) ? 'w' : '-');
$info .= (($perms & 0x0001) ?
(($perms & 0x0200) ? 't' : 'x' ) :
(($perms & 0x0200) ? 'T' : '-'));
return $info;
}
/**
* Converts *nix style file permissions to a octal number.
*
* Converts '-rw-r--r--' to 0644
* From "info at rvgate dot nl"'s comment on the PHP documentation for chmod()
*
* @link http://docs.php.net/manual/en/function.chmod.php#49614
* @since 2.5
* @access public
*
* @param string $mode string *nix style file permission
* @return int octal representation
*/
function getnumchmodfromh($mode) {
$realmode = '';
$legal = array('', 'w', 'r', 'x', '-');
$attarray = preg_split('//', $mode);
for ($i=0; $i < count($attarray); $i++)
if ($key = array_search($attarray[$i], $legal))
$realmode .= $legal[$key];
$mode = str_pad($realmode, 10, '-', STR_PAD_LEFT);
$trans = array('-'=>'0', 'r'=>'4', 'w'=>'2', 'x'=>'1');
$mode = strtr($mode,$trans);
$newmode = $mode[0];
$newmode .= $mode[1] + $mode[2] + $mode[3];
$newmode .= $mode[4] + $mode[5] + $mode[6];
$newmode .= $mode[7] + $mode[8] + $mode[9];
return $newmode;
}
/**
* Determines if the string provided contains binary characters.
*
* @since 2.7
* @access private
*
* @param string $text String to test against
* @return bool true if string is binary, false otherwise
*/
function is_binary( $text ) {
return (bool) preg_match('|[^\x20-\x7E]|', $text); //chr(32)..chr(127)
}
}
