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Updates: SSH2 Transport: Use a work around to avoid a bug where PHP's SSH2 extension fails to list the contents of the `/` directory. 

This fixes issues where SSH2 with chrooted environments runs into a `Unable to locate WordPress Content directory (wp-content).` error.

The workaround is to simply list the contents of the `/./` directory instead of `/`.

Fixes #33919


git-svn-id: https://develop.svn.wordpress.org/trunk@34738 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Dion Hulse 2015-10-01 05:39:44 +00:00
parent f9f56fb942
commit bb7763c1d1
1 changed files with 36 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

59
src/wp-admin/includes/class-wp-filesystem-ssh2.php
View File

@ -135,6 +135,28 @@ class WP_Filesystem_SSH2 extends WP_Filesystem_Base {
return true;
}
/**
* Gets the ssh2.sftp PHP stream wrapper path to open for the given file.
*
* This method also works around a PHP bug where the root directory (/) cannot
* be opened by PHP functions, causing a false failure. In order to work around
* this, the path is converted to /./ which is semantically the same as /
* See https://bugs.php.net/bug.php?id=64169 for more details.
*
* @access public
*
* @since 4.4
*
* @param string $path The File/Directory path on the remote server to return
* @return string The ssh2.sftp:// wrapped path to use.
*/
public function sftp_path( $path ) {
if ( '/' === $path ) {
$path = '/./';
}
return 'ssh2.sftp://' . $this->sftp_link . '/' . ltrim( $path, '/' );
}
/**
* @access public
*
@ -169,8 +191,7 @@ class WP_Filesystem_SSH2 extends WP_Filesystem_Base {
* @return string|false
*/
public function get_contents( $file ) {
$file = ltrim($file, '/');
return file_get_contents('ssh2.sftp://' . $this->sftp_link . '/' . $file);
return file_get_contents( $this->sftp_path( $file ) );
}
/**
@ -180,8 +201,7 @@ class WP_Filesystem_SSH2 extends WP_Filesystem_Base {
* @return array
*/
public function get_contents_array($file) {
$file = ltrim($file, '/');
return file('ssh2.sftp://' . $this->sftp_link . '/' . $file);
return file( $this->sftp_path( $file ) );
}
/**
@ -193,7 +213,7 @@ class WP_Filesystem_SSH2 extends WP_Filesystem_Base {
* @return bool
*/
public function put_contents($file, $contents, $mode = false ) {
$ret = file_put_contents( 'ssh2.sftp://' . $this->sftp_link . '/' . ltrim( $file, '/' ), $contents );
$ret = file_put_contents( $this->sftp_path( $file ), $contents );
if ( $ret !== strlen( $contents ) )
return false;
@ -294,7 +314,7 @@ class WP_Filesystem_SSH2 extends WP_Filesystem_Base {
* @return string|false
*/
public function owner($file) {
$owneruid = @fileowner('ssh2.sftp://' . $this->sftp_link . '/' . ltrim($file, '/'));
$owneruid = @fileowner( $this->sftp_path( $file ) );
if ( ! $owneruid )
return false;
if ( ! function_exists('posix_getpwuid') )
@ -310,7 +330,7 @@ class WP_Filesystem_SSH2 extends WP_Filesystem_Base {
* @return string
*/
public function getchmod($file) {
return substr( decoct( @fileperms( 'ssh2.sftp://' . $this->sftp_link . '/' . ltrim( $file, '/' ) ) ), -3 );
return substr( decoct( @fileperms( $this->sftp_path( $file ) ) ), -3 );
}
/**
@ -320,7 +340,7 @@ class WP_Filesystem_SSH2 extends WP_Filesystem_Base {
* @return string|false
*/
public function group($file) {
$gid = @filegroup('ssh2.sftp://' . $this->sftp_link . '/' . ltrim($file, '/'));
$gid = @filegroup( $this->sftp_path( $file ) );
if ( ! $gid )
return false;
if ( ! function_exists('posix_getgrgid') )
@ -388,8 +408,7 @@ class WP_Filesystem_SSH2 extends WP_Filesystem_Base {
* @return bool
*/
public function exists($file) {
$file = ltrim($file, '/');
return file_exists('ssh2.sftp://' . $this->sftp_link . '/' . $file);
return file_exists( $this->sftp_path( $file ) );
}
/**
@ -399,8 +418,7 @@ class WP_Filesystem_SSH2 extends WP_Filesystem_Base {
* @return bool
*/
public function is_file($file) {
$file = ltrim($file, '/');
return is_file('ssh2.sftp://' . $this->sftp_link . '/' . $file);
return is_file( $this->sftp_path( $file ) );
}
/**
@ -410,8 +428,7 @@ class WP_Filesystem_SSH2 extends WP_Filesystem_Base {
* @return bool
*/
public function is_dir($path) {
$path = ltrim($path, '/');
return is_dir('ssh2.sftp://' . $this->sftp_link . '/' . $path);
return is_dir( $this->sftp_path( $path ) );
}
/**
@ -421,8 +438,7 @@ class WP_Filesystem_SSH2 extends WP_Filesystem_Base {
* @return bool
*/
public function is_readable($file) {
$file = ltrim($file, '/');
return is_readable('ssh2.sftp://' . $this->sftp_link . '/' . $file);
return is_readable( $this->sftp_path( $file ) );
}
/**
@ -443,8 +459,7 @@ class WP_Filesystem_SSH2 extends WP_Filesystem_Base {
* @return int
*/
public function atime($file) {
$file = ltrim($file, '/');
return fileatime('ssh2.sftp://' . $this->sftp_link . '/' . $file);
return fileatime( $this->sftp_path( $file ) );
}
/**
@ -454,8 +469,7 @@ class WP_Filesystem_SSH2 extends WP_Filesystem_Base {
* @return int
*/
public function mtime($file) {
$file = ltrim($file, '/');
return filemtime('ssh2.sftp://' . $this->sftp_link . '/' . $file);
return filemtime( $this->sftp_path( $file ) );
}
/**
@ -465,8 +479,7 @@ class WP_Filesystem_SSH2 extends WP_Filesystem_Base {
* @return int
*/
public function size($file) {
$file = ltrim($file, '/');
return filesize('ssh2.sftp://' . $this->sftp_link . '/' . $file);
return filesize( $this->sftp_path( $file ) );
}
/**
@ -536,7 +549,7 @@ class WP_Filesystem_SSH2 extends WP_Filesystem_Base {
return false;
$ret = array();
$dir = @dir('ssh2.sftp://' . $this->sftp_link .'/' . ltrim($path, '/') );
$dir = @dir( $this->sftp_path( $path ) );
if ( ! $dir )
return false;