<?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_Service_Amazon

 * @subpackage Ec2

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 * @version    $Id: Keypair.php 20096 2010-01-06 02:05:09Z bkarwin $

 */

/**

 * @see Zend_Service_Amazon_Ec2_Abstract

 */

require_once 'Zend/Service/Amazon/Ec2/Abstract.php';

/**

 * An Amazon EC2 interface to create, delete and describe Ec2 KeyPairs.

 *

 * @category   Zend

 * @package    Zend_Service_Amazon

 * @subpackage Ec2

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

class Zend_Service_Amazon_Ec2_Keypair extends Zend_Service_Amazon_Ec2_Abstract

{

    /**

     * Creates a new 2048 bit RSA key pair and returns a unique ID that can

     * be used to reference this key pair when launching new instances.

     *

     * @param string $keyName           A unique name for the key pair.

     * @throws Zend_Service_Amazon_Ec2_Exception

     * @return array

     */

    public function create($keyName)

    {

        $params = array();

        $params['Action'] = 'CreateKeyPair';

        if(!$keyName) {

            require_once 'Zend/Service/Amazon/Ec2/Exception.php';

            throw new Zend_Service_Amazon_Ec2_Exception('Invalid Key Name');

        }

        $params['KeyName'] = $keyName;

        $response = $this->sendRequest($params);

        $xpath = $response->getXPath();

        $return = array();

        $return['keyName']          = $xpath->evaluate('string(//ec2:keyName/text())');

        $return['keyFingerprint']   = $xpath->evaluate('string(//ec2:keyFingerprint/text())');

        $return['keyMaterial']      = $xpath->evaluate('string(//ec2:keyMaterial/text())');

        return $return;

    }

    /**

     * Returns information about key pairs available to you. If you specify

     * key pairs, information about those key pairs is returned. Otherwise,

     * information for all registered key pairs is returned.

     *

     * @param string|rarray $keyName    Key pair IDs to describe.

     * @return array

     */

    public function describe($keyName = null)

    {

        $params = array();

        $params['Action'] = 'DescribeKeyPairs';

        if(is_array($keyName) && !empty($keyName)) {

            foreach($keyName as $k=>$name) {

                $params['KeyName.' . ($k+1)] = $name;

            }

        } elseif($keyName) {

            $params['KeyName.1'] = $keyName;

        }

        $response = $this->sendRequest($params);

        $xpath = $response->getXPath();

        $nodes  = $xpath->query('//ec2:keySet/ec2:item');

        $return = array();

        foreach ($nodes as $k => $node) {

            $item = array();

            $item['keyName']          = $xpath->evaluate('string(ec2:keyName/text())', $node);

            $item['keyFingerprint']   = $xpath->evaluate('string(ec2:keyFingerprint/text())', $node);

            $return[] = $item;

            unset($item);

        }

        return $return;

    }

    /**

     * Deletes a key pair

     *

     * @param string $keyName           Name of the key pair to delete.

     * @throws Zend_Service_Amazon_Ec2_Exception

     * @return boolean                  Return true or false from the deletion.

     */

    public function delete($keyName)

    {

        $params = array();

        $params['Action'] = 'DeleteKeyPair';

        if(!$keyName) {

            require_once 'Zend/Service/Amazon/Ec2/Exception.php';

            throw new Zend_Service_Amazon_Ec2_Exception('Invalid Key Name');

        }

        $params['KeyName'] = $keyName;

        $response = $this->sendRequest($params);

        $xpath = $response->getXPath();

        $success  = $xpath->evaluate('string(//ec2:return/text())');

        return ($success === "true");

    }

}