508 lines
14 KiB
PHP
508 lines
14 KiB
PHP
<?php
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/**
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* WordPress SSH2 Filesystem.
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*
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* @package WordPress
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* @subpackage Filesystem
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*/
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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.)
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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: No 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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*
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* @since 2.7
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* @package WordPress
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* @subpackage Filesystem
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* @uses WP_Filesystem_Base Extends class
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*/
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class WP_Filesystem_SSH2 extends WP_Filesystem_Base {
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var $debugtest = false; // set this to true only if your a debuging your connection
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var $link = null;
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var $sftp_link = null;
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var $keys = false;
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/*
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* This is the timeout value for ssh results to comeback.
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* Slower servers might need this incressed, but this number otherwise should not change.
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*
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* @parm $timeout int
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*
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*/
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var $timeout = 15;
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var $errors = array();
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var $options = array();
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var $permission = 0644;
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function WP_Filesystem_SSH2($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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$this->errors->add('no_ssh2_ext', __('The ssh2 PHP extension is not available'));
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return false;
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}
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// Set defaults:
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if ( empty($opt['port']) )
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$this->options['port'] = 22;
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else
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$this->options['port'] = $opt['port'];
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if ( empty($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'] = $opt['hostname'];
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if ( isset($opt['base']) && ! empty($opt['base']) )
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$this->wp_base = $opt['base'];
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// Check if the options provided are OK.
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if ( empty ($opt['username']) )
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$this->errors->add('empty_username', __('SSH2 username is required'));
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else
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$this->options['username'] = $opt['username'];
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if ( ( !empty ($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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$this->keys = true;
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}
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if ( empty ($opt['password']) ) {
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if ( !$this->keys ) // password can be blank if we are using keys
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$this->errors->add('empty_password', __('SSH2 password is required'));
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} else {
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$this->options['password'] = $opt['password'];
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}
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}
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function connect() {
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$this->debug("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('connect', sprintf(__('Failed to connect to SSH2 Server %1$s:%2$s'), $this->options['hostname'], $this->options['port']));
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return false;
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}
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if ( !$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('auth', sprintf(__('Username/Password incorrect for %s'), $this->options['username']));
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return false;
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}
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} else {
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if ( ! @ssh2_auth_pubkey_file($this->link, $this->options['username'], $this->options['public_key'], $this->options['private_key'], $this->options['password'] ) ) {
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$this->errors->add('auth', sprintf(__('Public and Private keys incorrent for %s'), $this->options['username']));
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return false;
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}
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}
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$this->sftp_link = ssh2_sftp($this->link);
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return true;
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}
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function run_command($link, $command, $returnbool = false) {
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$this->debug("run_command();");
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if(!($stream = @ssh2_exec( $link, $command . "; echo \"__COMMAND_FINISHED__\";"))) {
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$this->errors->add('command', sprintf(__('Unable to perform command: %s'), $command));
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} else {
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stream_set_blocking( $stream, true );
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$time_start = time();
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$data = null;
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while( true ) {
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if (strpos($data,"__COMMAND_FINISHED__") !== false){
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break; // the command has finshed!
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}
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if( (time()-$time_start) > $this->timeout ){
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$this->errors->add('command', sprintf(__('Connection to the server has timeout after %s seconds.'), $this->timeout));
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unset($this->link);
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unset($this->sftp_link); // close connections
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return false;
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}
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while( $buf = fread( $stream, strlen($stream) ) )
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$data .= $buf;
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}
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fclose($stream);
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$data = trim(str_replace("__COMMAND_FINISHED__", "", $data));
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if (($returnbool) && ( (int) $data )) {
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return true;
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} elseif (($returnbool) && (! (int) $data )) {
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return false;
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} else {
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return $data;
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}
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}
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return false;
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}
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function debug($text)
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{
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if ($this->debugtest)
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{
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echo "<br/>" . $text . "<br/>";
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}
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}
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function setDefaultPermissions($perm) {
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$this->debug("setDefaultPermissions();");
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if ( $perm )
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$this->permission = $perm;
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}
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function get_contents($file, $type = '', $resumepos = 0 ) {
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$this->debug("get_contents();");
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$tempfile = wp_tempnam( $file );
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if ( ! $tempfile )
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return false;
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if( ! ssh2_scp_recv($this->link, $file, $tempfile) )
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return false;
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$contents = file_get_contents($tempfile);
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unlink($tempfile);
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return $contents;
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}
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function get_contents_array($file) {
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$this->debug("get_contents_array();");
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return explode("\n", $this->get_contents($file));
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}
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function put_contents($file, $contents, $type = '' ) {
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$this->debug("put_contents($file);");
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$tempfile = wp_tempnam( $file );
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$temp = fopen($tempfile, 'w');
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if ( ! $temp )
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return false;
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fwrite($temp, $contents);
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fclose($temp);
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$ret = ssh2_scp_send($this->link, $tempfile, $file, $this->permission);
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unlink($tempfile);
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return $ret;
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}
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function cwd() {
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$this->debug("cwd();");
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$cwd = $this->run_command($this->link, 'pwd');
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if( $cwd )
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$cwd = trailingslashit($cwd);
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return $cwd;
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}
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function chdir($dir) {
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$this->debug("chdir();");
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return $this->run_command($this->link, 'cd ' . $dir, true);
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}
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function chgrp($file, $group, $recursive = false ) {
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$this->debug("chgrp();");
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if ( ! $this->exists($file) )
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return false;
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if ( ! $recursive || ! $this->is_dir($file) )
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return $this->run_command($this->link, sprintf('chgrp %o %s', $mode, $file), true);
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return $this->run_command($this->link, sprintf('chgrp -R %o %s', $mode, $file), true);
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}
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function chmod($file, $mode = false, $recursive = false) {
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$this->debug("chmod();");
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if( ! $mode )
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$mode = $this->permission;
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if( ! $mode )
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return false;
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if ( ! $this->exists($file) )
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return false;
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if ( ! $recursive || ! $this->is_dir($file) )
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return $this->run_command($this->link, sprintf('chmod %o %s', $mode, $file), true);
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return $this->run_command($this->link, sprintf('chmod -R %o %s', $mode, $file), true);
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}
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function chown($file, $owner, $recursive = false ) {
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$this->debug("chown();");
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if ( ! $this->exists($file) )
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return false;
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if ( ! $recursive || ! $this->is_dir($file) )
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return $this->run_command($this->link, sprintf('chown %o %s', $mode, $file), true);
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return $this->run_command($this->link, sprintf('chown -R %o %s', $mode, $file), true);
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}
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function owner($file) {
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$this->debug("owner();");
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$dir = $this->dirlist($file);
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return $dir[$file]['owner'];
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}
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function getchmod($file) {
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$this->debug("getchmod();");
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$dir = $this->dirlist($file);
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return $dir[$file]['permsn'];
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}
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function group($file) {
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$this->debug("group();");
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$dir = $this->dirlist($file);
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return $dir[$file]['group'];
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}
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function copy($source, $destination, $overwrite = false ) {
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$this->debug("copy();");
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if( ! $overwrite && $this->exists($destination) )
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return false;
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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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return $this->put_contents($destination, $content);
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}
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function move($source, $destination, $overwrite = false) {
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$this->debug("move();");
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return @ssh2_sftp_rename($this->link, $source, $destination);
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}
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function delete($file, $recursive = false) {
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$this->debug("delete();");
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if ( $this->is_file($file) )
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return ssh2_sftp_unlink($this->sftp_link, $file);
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if ( ! $recursive )
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return ssh2_sftp_rmdir($this->sftp_link, $file);
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$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, $recursive);
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}
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}
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return ssh2_sftp_rmdir($this->sftp_link, $file);
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}
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function exists($file) {
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$this->debug("exists();");
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return $this->run_command($this->link, sprintf('ls -lad %s', $file), true);
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}
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function is_file($file) {
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$this->debug("is_file();");
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//DO NOT RELY ON dirlist()!
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$list = $this->run_command($this->link, sprintf('ls -lad %s', $file));
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$list = $this->parselisting($list);
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if ( ! $list )
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return false;
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else
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return ( !$list['isdir'] && !$list['islink'] ); //ie. not a file or link, yet exists, must be file.
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}
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function is_dir($path) {
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$this->debug("is_dir();");
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//DO NOT RELY ON dirlist()!
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$list = $this->parselisting($this->run_command($this->link, sprintf('ls -lad %s', untrailingslashit($path))));
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if ( ! $list )
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return false;
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else
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return $list['isdir'];
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}
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function is_readable($file) {
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//Not implmented.
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}
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function is_writable($file) {
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//Not implmented.
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}
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function atime($file) {
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//Not implmented.
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}
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function mtime($file) {
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//Not implmented.
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}
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function size($file) {
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//Not implmented.
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}
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function touch($file, $time = 0, $atime = 0) {
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//Not implmented.
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}
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function mkdir($path, $chmod = null, $chown = false, $chgrp = false) {
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$this->debug("mkdir();");
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$path = untrailingslashit($path);
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if( ! ssh2_sftp_mkdir($this->sftp_link, $path, $chmod, true) )
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return false;
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if( $chown )
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$this->chown($path, $chown);
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if( $chgrp )
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$this->chgrp($path, $chgrp);
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return true;
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}
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function rmdir($path, $recursive = false) {
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$this->debug("rmdir();");
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return $this->delete($path, $recursive);
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}
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function parselisting($line) {
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$this->debug("parselisting();");
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$is_windows = ($this->OS_remote == FTP_OS_Windows);
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if ($is_windows && preg_match("/([0-9]{2})-([0-9]{2})-([0-9]{2}) +([0-9]{2}):([0-9]{2})(AM|PM) +([0-9]+|<DIR>) +(.+)/", $line, $lucifer)) {
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$b = array();
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if ($lucifer[3]<70) { $lucifer[3] +=2000; } else { $lucifer[3]+=1900; } // 4digit year fix
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$b['isdir'] = ($lucifer[7]=="<DIR>");
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if ( $b['isdir'] )
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$b['type'] = 'd';
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else
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$b['type'] = 'f';
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$b['size'] = $lucifer[7];
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$b['month'] = $lucifer[1];
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$b['day'] = $lucifer[2];
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$b['year'] = $lucifer[3];
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$b['hour'] = $lucifer[4];
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$b['minute'] = $lucifer[5];
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$b['time'] = @mktime($lucifer[4]+(strcasecmp($lucifer[6],"PM")==0?12:0),$lucifer[5],0,$lucifer[1],$lucifer[2],$lucifer[3]);
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$b['am/pm'] = $lucifer[6];
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$b['name'] = $lucifer[8];
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} else if (!$is_windows && $lucifer=preg_split("/[ ]/",$line,9,PREG_SPLIT_NO_EMPTY)) {
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//echo $line."\n";
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$lcount=count($lucifer);
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if ($lcount<8) return '';
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$b = array();
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$b['isdir'] = $lucifer[0]{0} === "d";
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$b['islink'] = $lucifer[0]{0} === "l";
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if ( $b['isdir'] )
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$b['type'] = 'd';
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elseif ( $b['islink'] )
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$b['type'] = 'l';
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else
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$b['type'] = 'f';
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$b['perms'] = $lucifer[0];
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$b['number'] = $lucifer[1];
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$b['owner'] = $lucifer[2];
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$b['group'] = $lucifer[3];
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$b['size'] = $lucifer[4];
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if ($lcount==8) {
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sscanf($lucifer[5],"%d-%d-%d",$b['year'],$b['month'],$b['day']);
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sscanf($lucifer[6],"%d:%d",$b['hour'],$b['minute']);
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$b['time'] = @mktime($b['hour'],$b['minute'],0,$b['month'],$b['day'],$b['year']);
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$b['name'] = $lucifer[7];
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} else {
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$b['month'] = $lucifer[5];
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$b['day'] = $lucifer[6];
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if (preg_match("/([0-9]{2}):([0-9]{2})/",$lucifer[7],$l2)) {
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$b['year'] = date("Y");
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$b['hour'] = $l2[1];
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$b['minute'] = $l2[2];
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} else {
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$b['year'] = $lucifer[7];
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$b['hour'] = 0;
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$b['minute'] = 0;
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}
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$b['time'] = strtotime(sprintf("%d %s %d %02d:%02d",$b['day'],$b['month'],$b['year'],$b['hour'],$b['minute']));
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$b['name'] = $lucifer[8];
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}
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}
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return $b;
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}
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function dirlist($path = '.', $incdot = false, $recursive = false) {
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$this->debug("dirlist();");
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if( $this->is_file($path) ) {
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$limitFile = basename($path);
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$path = trailingslashit(dirname($path));
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} else {
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$limitFile = false;
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}
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$list = $this->run_command($this->link, sprintf('ls -la %s', $path));
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if ( $list === false )
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return false;
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$list = explode("\n", $list);
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$dirlist = array();
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foreach ( (array)$list as $k => $v ) {
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$entry = $this->parselisting($v);
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if ( empty($entry) )
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continue;
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if ( '.' == $entry['name'] || '..' == $entry['name'] )
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continue;
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$dirlist[ $entry['name'] ] = $entry;
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}
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if ( ! $dirlist )
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return false;
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if ( empty($dirlist) )
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return array();
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$ret = array();
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foreach ( $dirlist as $struc ) {
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if ( 'd' == $struc['type'] ) {
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$struc['files'] = array();
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if ( $incdot ){
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//We're including the doted starts
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if( '.' != $struc['name'] && '..' != $struc['name'] ){ //Ok, It isnt a special folder
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if ($recursive)
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$struc['files'] = $this->dirlist($path . '/' . $struc['name'], $incdot, $recursive);
|
|
}
|
|
} else { //No dots
|
|
if ( $recursive )
|
|
$struc['files'] = $this->dirlist($path . '/' . $struc['name'], $incdot, $recursive);
|
|
}
|
|
}
|
|
//File
|
|
$ret[$struc['name']] = $struc;
|
|
}
|
|
return $ret;
|
|
}
|
|
function __destruct() {
|
|
$this->debug("__destruct();");
|
|
if ( $this->link )
|
|
unset($this->link);
|
|
if ( $this->sftp_link )
|
|
unset($this->sftp_link);
|
|
}
|
|
}
|
|
|
|
?>
|