added toolbar; functionality includes refresh button to get back to original page, print article, email a link to the article with a personal note

git-svn-id: http://arc90labs-readability.googlecode.com/svn/trunk@31 d4e419ec-0920-11de-bbfd-a7c1bc4c261e

1 files changed, 385 insertions, 0 deletions

diff --git a/lib/Zend/Mail/Protocol/Abstract.php b/lib/Zend/Mail/Protocol/Abstract.php
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+<?php
+
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ * 
+ * @category   Zend
+ * @package    Zend_Mail
+ * @subpackage Protocol
+ * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id: Abstract.php 12395 2008-11-07 23:58:38Z nico $
+ */
+
+
+/**
+ * @see Zend_Validate
+ */
+require_once 'Zend/Validate.php';
+
+
+/**
+ * @see Zend_Validate_Hostname
+ */
+require_once 'Zend/Validate/Hostname.php';
+
+
+/**
+ * Zend_Mail_Protocol_Abstract
+ *
+ * Provides low-level methods for concrete adapters to communicate with a remote mail server and track requests and responses.
+ * 
+ * @category   Zend
+ * @package    Zend_Mail
+ * @subpackage Protocol
+ * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id: Abstract.php 12395 2008-11-07 23:58:38Z nico $
+ * @todo Implement proxy settings
+ */
+abstract class Zend_Mail_Protocol_Abstract
+{
+    /**
+     * Mail default EOL string
+     */
+    const EOL = "\r\n";
+
+
+    /**
+     * Default timeout in seconds for initiating session
+     */
+    const TIMEOUT_CONNECTION = 30;
+
+
+    /**
+     * Hostname or IP address of remote server
+     * @var string
+     */
+    protected $_host;
+
+
+    /**
+     * Port number of connection
+     * @var integer
+     */
+    protected $_port;
+
+
+    /**
+     * Instance of Zend_Validate to check hostnames
+     * @var Zend_Validate
+     */
+    protected $_validHost;
+
+
+    /**
+     * Socket connection resource
+     * @var resource
+     */
+    protected $_socket;
+
+
+    /**
+     * Last request sent to server
+     * @var string
+     */
+    protected $_request;
+
+
+    /**
+     * Array of server responses to last request
+     * @var array
+     */
+    protected $_response;
+
+
+    /**
+     * String template for parsing server responses using sscanf (default: 3 digit code and response string)
+     * @var resource
+     */
+    protected $_template = '%d%s';
+
+
+    /**
+     * Log of mail requests and server responses for a session
+     * @var string
+     */
+    private $_log;
+
+
+    /**
+     * Constructor.
+     *
+     * @param  string  $host OPTIONAL Hostname of remote connection (default: 127.0.0.1)
+     * @param  integer $port OPTIONAL Port number (default: null)
+     * @throws Zend_Mail_Protocol_Exception
+     * @return void
+     */
+    public function __construct($host = '127.0.0.1', $port = null)
+    {
+        $this->_validHost = new Zend_Validate();
+        $this->_validHost->addValidator(new Zend_Validate_Hostname(Zend_Validate_Hostname::ALLOW_ALL));
+
+        if (!$this->_validHost->isValid($host)) {
+            /**
+             * @see Zend_Mail_Protocol_Exception
+             */
+            require_once 'Zend/Mail/Protocol/Exception.php';
+            throw new Zend_Mail_Protocol_Exception(join(', ', $this->_validHost->getMessages()));
+        }
+
+        $this->_host = $host;
+        $this->_port = $port;
+    }
+
+
+    /**
+     * Class destructor to cleanup open resources
+     *
+     * @return void
+     */
+    public function __destruct()
+    {
+        $this->_disconnect();
+    }
+
+
+    /**
+     * Create a connection to the remote host
+     *
+     * Concrete adapters for this class will implement their own unique connect scripts, using the _connect() method to create the socket resource.
+     */
+    abstract public function connect();
+
+
+    /**
+     * Retrieve the last client request
+     *
+     * @return string
+     */
+    public function getRequest()
+    {
+        return $this->_request;
+    }
+
+
+    /**
+     * Retrieve the last server response
+     *
+     * @return array
+     */
+    public function getResponse()
+    {
+        return $this->_response;
+    }
+
+
+    /**
+     * Retrieve the transaction log
+     *
+     * @return string
+     */
+    public function getLog()
+    {
+        return $this->_log;
+    }
+
+
+    /**
+     * Reset the transaction log
+     *
+     * @return void
+     */
+    public function resetLog()
+    {
+        $this->_log = '';
+    }
+
+
+    /**
+     * Connect to the server using the supplied transport and target
+     *
+     * An example $remote string may be 'tcp://mail.example.com:25' or 'ssh://hostname.com:2222'
+     *
+     * @param  string $remote Remote
+     * @throws Zend_Mail_Protocol_Exception
+     * @return boolean
+     */
+    protected function _connect($remote)
+    {
+        $errorNum = 0;
+        $errorStr = '';
+
+        // open connection
+        $this->_socket = @stream_socket_client($remote, $errorNum, $errorStr, self::TIMEOUT_CONNECTION);
+
+        if ($this->_socket === false) {
+            if ($errorNum == 0) {
+                $errorStr = 'Could not open socket';
+            }
+            /**
+             * @see Zend_Mail_Protocol_Exception
+             */
+            require_once 'Zend/Mail/Protocol/Exception.php';
+            throw new Zend_Mail_Protocol_Exception($errorStr);
+        }
+
+        if (($result = stream_set_timeout($this->_socket, self::TIMEOUT_CONNECTION)) === false) {
+            /**
+             * @see Zend_Mail_Protocol_Exception
+             */
+            require_once 'Zend/Mail/Protocol/Exception.php';
+            throw new Zend_Mail_Protocol_Exception('Could not set stream timeout');
+        }
+
+        return $result;
+    }
+
+
+    /**
+     * Disconnect from remote host and free resource
+     *
+     * @return void
+     */
+    protected function _disconnect()
+    {
+        if (is_resource($this->_socket)) {
+            fclose($this->_socket);
+        }
+    }
+
+
+    /**
+     * Send the given request followed by a LINEEND to the server.
+     *
+     * @param  string $request
+     * @throws Zend_Mail_Protocol_Exception
+     * @return integer|boolean Number of bytes written to remote host
+     */
+    protected function _send($request)
+    {
+        if (!is_resource($this->_socket)) {
+            /**
+             * @see Zend_Mail_Protocol_Exception
+             */
+            require_once 'Zend/Mail/Protocol/Exception.php';
+            throw new Zend_Mail_Protocol_Exception('No connection has been established to ' . $this->_host);
+        }
+
+        $this->_request = $request;
+
+        $result = fwrite($this->_socket, $request . self::EOL);
+
+        // Save request to internal log
+        $this->_log .= $request . self::EOL;
+
+        if ($result === false) {
+            /**
+             * @see Zend_Mail_Protocol_Exception
+             */
+            require_once 'Zend/Mail/Protocol/Exception.php';
+            throw new Zend_Mail_Protocol_Exception('Could not send request to ' . $this->_host);
+        }
+
+        return $result;
+    }
+
+
+    /**
+     * Get a line from the stream.
+     *
+     * @var    integer $timeout Per-request timeout value if applicable
+     * @throws Zend_Mail_Protocol_Exception
+     * @return string
+     */
+    protected function _receive($timeout = null)
+    {
+        if (!is_resource($this->_socket)) {
+            /**
+             * @see Zend_Mail_Protocol_Exception
+             */
+            require_once 'Zend/Mail/Protocol/Exception.php';
+            throw new Zend_Mail_Protocol_Exception('No connection has been established to ' . $this->_host);
+        }
+
+        // Adapters may wish to supply per-commend timeouts according to appropriate RFC
+        if ($timeout !== null) {
+           stream_set_timeout($this->_socket, $timeout);
+        }
+
+        // Retrieve response
+        $reponse = fgets($this->_socket, 1024);
+
+        // Save request to internal log
+        $this->_log .= $reponse;
+
+        // Check meta data to ensure connection is still valid
+        $info = stream_get_meta_data($this->_socket);
+
+        if (!empty($info['timed_out'])) {
+            /**
+             * @see Zend_Mail_Protocol_Exception
+             */
+            require_once 'Zend/Mail/Protocol/Exception.php';
+            throw new Zend_Mail_Protocol_Exception($this->_host . ' has timed out');
+        }
+
+        if ($reponse === false) {
+            /**
+             * @see Zend_Mail_Protocol_Exception
+             */
+            require_once 'Zend/Mail/Protocol/Exception.php';
+            throw new Zend_Mail_Protocol_Exception('Could not read from ' . $this->_host);
+        }
+
+        return $reponse;
+    }
+
+
+    /**
+     * Parse server response for successful codes
+     *
+     * Read the response from the stream and check for expected return code.
+     * Throws a Zend_Mail_Protocol_Exception if an unexpected code is returned.
+     *
+     * @param  string|array $code One or more codes that indicate a successful response
+     * @throws Zend_Mail_Protocol_Exception
+     * @return string Last line of response string
+     */
+    protected function _expect($code, $timeout = null)
+    {
+        $this->_response = array();
+        $cmd = '';
+        $msg = '';
+
+        if (!is_array($code)) {
+            $code = array($code);
+        }
+
+        do {
+            $this->_response[] = $result = $this->_receive($timeout);
+            sscanf($result, $this->_template, $cmd, $msg);
+
+            if ($cmd === null || !in_array($cmd, $code)) {
+                /**
+                 * @see Zend_Mail_Protocol_Exception
+                 */
+                require_once 'Zend/Mail/Protocol/Exception.php';
+                throw new Zend_Mail_Protocol_Exception($result);
+            }
+
+        } while (strpos($msg, '-') === 0); // The '-' message prefix indicates an information string instead of a response string.
+
+        return $msg;
+    }
+}