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aaf99e6913
WordPress' code just... wasn't. This is now dealt with. Props jrf, pento, netweb, GaryJ, jdgrimes, westonruter, Greg Sherwood from PHPCS, and everyone who's ever contributed to WPCS and PHPCS. Fixes #41057. Built from https://develop.svn.wordpress.org/trunk@42343 git-svn-id: http://core.svn.wordpress.org/trunk@42172 1a063a9b-81f0-0310-95a4-ce76da25c4cd
613 lines
15 KiB
PHP
613 lines
15 KiB
PHP
<?php
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/**
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* WordPress Filesystem Class for implementing SSH2
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*
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* To use this class you must follow these steps for PHP 5.2.6+
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*
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* @contrib http://kevin.vanzonneveld.net/techblog/article/make_ssh_connections_with_php/ - Installation Notes
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*
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* Complie libssh2 (Note: Only 0.14 is officaly working with PHP 5.2.6+ right now, But many users have found the latest versions work)
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*
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* cd /usr/src
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* wget http://surfnet.dl.sourceforge.net/sourceforge/libssh2/libssh2-0.14.tar.gz
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* tar -zxvf libssh2-0.14.tar.gz
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* cd libssh2-0.14/
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* ./configure
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* make all install
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*
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* Note: Do not leave the directory yet!
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*
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* Enter: pecl install -f ssh2
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*
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* Copy the ssh.so file it creates to your PHP Module Directory.
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* Open up your PHP.INI file and look for where extensions are placed.
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* Add in your PHP.ini file: extension=ssh2.so
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*
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* Restart Apache!
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* Check phpinfo() streams to confirm that: ssh2.shell, ssh2.exec, ssh2.tunnel, ssh2.scp, ssh2.sftp exist.
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*
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* Note: as of WordPress 2.8, This utilises the PHP5+ function 'stream_get_contents'
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*
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* @since 2.7.0
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*
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* @package WordPress
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* @subpackage Filesystem
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*/
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class WP_Filesystem_SSH2 extends WP_Filesystem_Base {
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/**
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*/
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public $link = false;
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/**
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* @var resource
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*/
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public $sftp_link;
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public $keys = false;
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/**
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* @param array $opt
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*/
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public function __construct( $opt = '' ) {
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$this->method = 'ssh2';
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$this->errors = new WP_Error();
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//Check if possible to use ssh2 functions.
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if ( ! extension_loaded( 'ssh2' ) ) {
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$this->errors->add( 'no_ssh2_ext', __( 'The ssh2 PHP extension is not available' ) );
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return;
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}
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if ( ! function_exists( 'stream_get_contents' ) ) {
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$this->errors->add(
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'ssh2_php_requirement',
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sprintf(
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/* translators: %s: stream_get_contents() */
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__( 'The ssh2 PHP extension is available, however, we require the PHP5 function %s' ),
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'<code>stream_get_contents()</code>'
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)
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);
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return;
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}
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// Set defaults:
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if ( empty( $opt['port'] ) ) {
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$this->options['port'] = 22;
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} else {
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$this->options['port'] = $opt['port'];
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}
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if ( empty( $opt['hostname'] ) ) {
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$this->errors->add( 'empty_hostname', __( 'SSH2 hostname is required' ) );
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} else {
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$this->options['hostname'] = $opt['hostname'];
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}
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// Check if the options provided are OK.
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if ( ! empty( $opt['public_key'] ) && ! empty( $opt['private_key'] ) ) {
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$this->options['public_key'] = $opt['public_key'];
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$this->options['private_key'] = $opt['private_key'];
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$this->options['hostkey'] = array( 'hostkey' => 'ssh-rsa' );
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$this->keys = true;
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} elseif ( empty( $opt['username'] ) ) {
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$this->errors->add( 'empty_username', __( 'SSH2 username is required' ) );
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}
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if ( ! empty( $opt['username'] ) ) {
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$this->options['username'] = $opt['username'];
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}
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if ( empty( $opt['password'] ) ) {
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// Password can be blank if we are using keys.
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if ( ! $this->keys ) {
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$this->errors->add( 'empty_password', __( 'SSH2 password is required' ) );
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}
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} else {
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$this->options['password'] = $opt['password'];
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}
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}
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/**
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* @return bool
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*/
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public function connect() {
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if ( ! $this->keys ) {
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$this->link = @ssh2_connect( $this->options['hostname'], $this->options['port'] );
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} else {
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$this->link = @ssh2_connect( $this->options['hostname'], $this->options['port'], $this->options['hostkey'] );
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}
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if ( ! $this->link ) {
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$this->errors->add(
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'connect',
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/* translators: %s: hostname:port */
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sprintf(
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__( 'Failed to connect to SSH2 Server %s' ),
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$this->options['hostname'] . ':' . $this->options['port']
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)
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);
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return false;
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}
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if ( ! $this->keys ) {
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if ( ! @ssh2_auth_password( $this->link, $this->options['username'], $this->options['password'] ) ) {
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$this->errors->add(
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'auth',
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/* translators: %s: username */
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sprintf(
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__( 'Username/Password incorrect for %s' ),
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$this->options['username']
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)
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);
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return false;
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}
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} else {
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if ( ! @ssh2_auth_pubkey_file( $this->link, $this->options['username'], $this->options['public_key'], $this->options['private_key'], $this->options['password'] ) ) {
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$this->errors->add(
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'auth',
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/* translators: %s: username */
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sprintf(
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__( 'Public and Private keys incorrect for %s' ),
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$this->options['username']
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)
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);
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return false;
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}
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}
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$this->sftp_link = ssh2_sftp( $this->link );
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if ( ! $this->sftp_link ) {
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$this->errors->add(
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'connect',
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/* translators: %s: hostname:port */
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sprintf(
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__( 'Failed to initialize a SFTP subsystem session with the SSH2 Server %s' ),
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$this->options['hostname'] . ':' . $this->options['port']
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)
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);
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return false;
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}
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return true;
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}
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/**
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* Gets the ssh2.sftp PHP stream wrapper path to open for the given file.
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*
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* This method also works around a PHP bug where the root directory (/) cannot
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* be opened by PHP functions, causing a false failure. In order to work around
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* this, the path is converted to /./ which is semantically the same as /
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* See https://bugs.php.net/bug.php?id=64169 for more details.
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*
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* @since 4.4.0
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*
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* @param string $path The File/Directory path on the remote server to return
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* @return string The ssh2.sftp:// wrapped path to use.
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*/
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public function sftp_path( $path ) {
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if ( '/' === $path ) {
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$path = '/./';
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}
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return 'ssh2.sftp://' . $this->sftp_link . '/' . ltrim( $path, '/' );
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}
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/**
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* @param string $command
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* @param bool $returnbool
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* @return bool|string True on success, false on failure. String if the command was executed, `$returnbool`
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* is false (default), and data from the resulting stream was retrieved.
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*/
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public function run_command( $command, $returnbool = false ) {
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if ( ! $this->link ) {
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return false;
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}
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if ( ! ( $stream = ssh2_exec( $this->link, $command ) ) ) {
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$this->errors->add(
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'command',
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/* translators: %s: command */
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sprintf(
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__( 'Unable to perform command: %s' ),
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$command
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)
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);
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} else {
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stream_set_blocking( $stream, true );
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stream_set_timeout( $stream, FS_TIMEOUT );
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$data = stream_get_contents( $stream );
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fclose( $stream );
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if ( $returnbool ) {
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return ( $data === false ) ? false : '' != trim( $data );
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} else {
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return $data;
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}
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}
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return false;
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}
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/**
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* @param string $file
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* @return string|false
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*/
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public function get_contents( $file ) {
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return file_get_contents( $this->sftp_path( $file ) );
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}
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/**
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* @param string $file
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* @return array
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*/
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public function get_contents_array( $file ) {
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return file( $this->sftp_path( $file ) );
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}
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/**
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* @param string $file
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* @param string $contents
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* @param bool|int $mode
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* @return bool
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*/
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public function put_contents( $file, $contents, $mode = false ) {
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$ret = file_put_contents( $this->sftp_path( $file ), $contents );
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if ( $ret !== strlen( $contents ) ) {
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return false;
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}
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$this->chmod( $file, $mode );
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return true;
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}
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/**
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* @return bool
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*/
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public function cwd() {
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$cwd = ssh2_sftp_realpath( $this->sftp_link, '.' );
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if ( $cwd ) {
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$cwd = trailingslashit( trim( $cwd ) );
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}
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return $cwd;
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}
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/**
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* @param string $dir
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* @return bool|string
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*/
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public function chdir( $dir ) {
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return $this->run_command( 'cd ' . $dir, true );
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}
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/**
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* @param string $file
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* @param string $group
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* @param bool $recursive
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*
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* @return bool
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*/
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public function chgrp( $file, $group, $recursive = false ) {
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if ( ! $this->exists( $file ) ) {
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return false;
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}
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if ( ! $recursive || ! $this->is_dir( $file ) ) {
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return $this->run_command( sprintf( 'chgrp %s %s', escapeshellarg( $group ), escapeshellarg( $file ) ), true );
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}
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return $this->run_command( sprintf( 'chgrp -R %s %s', escapeshellarg( $group ), escapeshellarg( $file ) ), true );
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}
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/**
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* @param string $file
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* @param int $mode
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* @param bool $recursive
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* @return bool|string
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*/
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public function chmod( $file, $mode = false, $recursive = false ) {
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if ( ! $this->exists( $file ) ) {
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return false;
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}
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if ( ! $mode ) {
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if ( $this->is_file( $file ) ) {
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$mode = FS_CHMOD_FILE;
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} elseif ( $this->is_dir( $file ) ) {
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$mode = FS_CHMOD_DIR;
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} else {
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return false;
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}
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}
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if ( ! $recursive || ! $this->is_dir( $file ) ) {
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return $this->run_command( sprintf( 'chmod %o %s', $mode, escapeshellarg( $file ) ), true );
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}
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return $this->run_command( sprintf( 'chmod -R %o %s', $mode, escapeshellarg( $file ) ), true );
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}
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/**
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* Change the ownership of a file / folder.
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*
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* @param string $file Path to the file.
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* @param string|int $owner A user name or number.
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* @param bool $recursive Optional. If set True changes file owner recursivly. Default False.
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* @return bool True on success or false on failure.
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*/
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public function chown( $file, $owner, $recursive = false ) {
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if ( ! $this->exists( $file ) ) {
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return false;
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}
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if ( ! $recursive || ! $this->is_dir( $file ) ) {
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return $this->run_command( sprintf( 'chown %s %s', escapeshellarg( $owner ), escapeshellarg( $file ) ), true );
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}
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return $this->run_command( sprintf( 'chown -R %s %s', escapeshellarg( $owner ), escapeshellarg( $file ) ), true );
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}
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/**
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* @param string $file
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* @return string|false
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*/
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public function owner( $file ) {
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$owneruid = @fileowner( $this->sftp_path( $file ) );
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if ( ! $owneruid ) {
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return false;
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}
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if ( ! function_exists( 'posix_getpwuid' ) ) {
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return $owneruid;
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}
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$ownerarray = posix_getpwuid( $owneruid );
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return $ownerarray['name'];
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}
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/**
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* @param string $file
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* @return string
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*/
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public function getchmod( $file ) {
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return substr( decoct( @fileperms( $this->sftp_path( $file ) ) ), -3 );
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}
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/**
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* @param string $file
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* @return string|false
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*/
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public function group( $file ) {
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$gid = @filegroup( $this->sftp_path( $file ) );
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if ( ! $gid ) {
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return false;
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}
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if ( ! function_exists( 'posix_getgrgid' ) ) {
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return $gid;
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}
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$grouparray = posix_getgrgid( $gid );
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return $grouparray['name'];
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}
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/**
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* @param string $source
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* @param string $destination
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* @param bool $overwrite
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* @param int|bool $mode
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* @return bool
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*/
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public function copy( $source, $destination, $overwrite = false, $mode = false ) {
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if ( ! $overwrite && $this->exists( $destination ) ) {
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return false;
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}
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$content = $this->get_contents( $source );
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if ( false === $content ) {
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return false;
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}
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return $this->put_contents( $destination, $content, $mode );
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}
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/**
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* @param string $source
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* @param string $destination
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* @param bool $overwrite
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* @return bool
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*/
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public function move( $source, $destination, $overwrite = false ) {
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return @ssh2_sftp_rename( $this->sftp_link, $source, $destination );
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}
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/**
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* @param string $file
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* @param bool $recursive
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* @param string|bool $type
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* @return bool
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*/
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public function delete( $file, $recursive = false, $type = false ) {
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if ( 'f' == $type || $this->is_file( $file ) ) {
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return ssh2_sftp_unlink( $this->sftp_link, $file );
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}
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if ( ! $recursive ) {
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return ssh2_sftp_rmdir( $this->sftp_link, $file );
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}
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$filelist = $this->dirlist( $file );
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if ( is_array( $filelist ) ) {
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foreach ( $filelist as $filename => $fileinfo ) {
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$this->delete( $file . '/' . $filename, $recursive, $fileinfo['type'] );
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}
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}
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return ssh2_sftp_rmdir( $this->sftp_link, $file );
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}
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/**
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* @param string $file
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* @return bool
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*/
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public function exists( $file ) {
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return file_exists( $this->sftp_path( $file ) );
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}
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/**
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* @param string $file
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* @return bool
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*/
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public function is_file( $file ) {
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return is_file( $this->sftp_path( $file ) );
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}
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/**
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* @param string $path
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* @return bool
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*/
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public function is_dir( $path ) {
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return is_dir( $this->sftp_path( $path ) );
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}
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/**
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* @param string $file
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* @return bool
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*/
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public function is_readable( $file ) {
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return is_readable( $this->sftp_path( $file ) );
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}
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/**
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* @param string $file
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* @return bool
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*/
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public function is_writable( $file ) {
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// PHP will base it's writable checks on system_user === file_owner, not ssh_user === file_owner
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return true;
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}
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/**
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* @param string $file
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* @return int
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*/
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public function atime( $file ) {
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return fileatime( $this->sftp_path( $file ) );
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}
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/**
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* @param string $file
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* @return int
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*/
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public function mtime( $file ) {
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return filemtime( $this->sftp_path( $file ) );
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}
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/**
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* @param string $file
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* @return int
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*/
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public function size( $file ) {
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return filesize( $this->sftp_path( $file ) );
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}
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/**
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* @param string $file
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* @param int $time
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* @param int $atime
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*/
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public function touch( $file, $time = 0, $atime = 0 ) {
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//Not implemented.
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}
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/**
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* @param string $path
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* @param mixed $chmod
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* @param mixed $chown
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* @param mixed $chgrp
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* @return bool
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*/
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public function mkdir( $path, $chmod = false, $chown = false, $chgrp = false ) {
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$path = untrailingslashit( $path );
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if ( empty( $path ) ) {
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return false;
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}
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if ( ! $chmod ) {
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$chmod = FS_CHMOD_DIR;
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}
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if ( ! ssh2_sftp_mkdir( $this->sftp_link, $path, $chmod, true ) ) {
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return false;
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}
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if ( $chown ) {
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$this->chown( $path, $chown );
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}
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if ( $chgrp ) {
|
|
$this->chgrp( $path, $chgrp );
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @param string $path
|
|
* @param bool $recursive
|
|
* @return bool
|
|
*/
|
|
public function rmdir( $path, $recursive = false ) {
|
|
return $this->delete( $path, $recursive );
|
|
}
|
|
|
|
/**
|
|
* @param string $path
|
|
* @param bool $include_hidden
|
|
* @param bool $recursive
|
|
* @return bool|array
|
|
*/
|
|
public 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;
|
|
}
|
|
|
|
$ret = array();
|
|
$dir = @dir( $this->sftp_path( $path ) );
|
|
|
|
if ( ! $dir ) {
|
|
return false;
|
|
}
|
|
|
|
while ( false !== ( $entry = $dir->read() ) ) {
|
|
$struc = array();
|
|
$struc['name'] = $entry;
|
|
|
|
if ( '.' == $struc['name'] || '..' == $struc['name'] ) {
|
|
continue; //Do not care about these folders.
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|