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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_Service_Amazon
  * @subpackage Ec2
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 /**
  * @see Zend_Service_Amazon_Ec2_Abstract
  */
 // require_once 'Zend/Service/Amazon/Ec2/Abstract.php';
 
 /**
  * An Amazon EC2 interface to create, delete, describe, grand and revoke sercurity permissions.
  *
  * @category   Zend
  * @package    Zend_Service_Amazon
  * @subpackage Ec2
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Service_Amazon_Ec2_Securitygroups extends Zend_Service_Amazon_Ec2_Abstract
 {
     /**
      * Creates a new security group.
      *
      * Every instance is launched in a security group. If no security group is specified
      * during launch, the instances are launched in the default security group. Instances
      * within the same security group have unrestricted network access to each other.
      * Instances will reject network access attempts from other instances in a different
      * security group. As the owner of instances you can grant or revoke specific permissions
      * using the {@link authorizeIp}, {@link authorizeGroup}, {@link revokeGroup} and
      * {$link revokeIp} operations.
      *
      * @param string $name          Name of the new security group.
      * @param string $description   Description of the new security group.
      * @return boolean
      */
     public function create($name, $description)
     {
         $params = array();
         $params['Action'] = 'CreateSecurityGroup';
         $params['GroupName'] = $name;
         $params['GroupDescription'] = $description;
 
         $response = $this->sendRequest($params);
         $xpath = $response->getXPath();
         $success  = $xpath->evaluate('string(//ec2:return/text())');
 
         return ($success === "true");
     }
 
     /**
      * Returns information about security groups that you own.
      *
      * If you specify security group names, information about those security group is returned.
      * Otherwise, information for all security group is returned. If you specify a group
      * that does not exist, a fault is returned.
      *
      * @param string|array $name    List of security groups to describe
      * @return array
      */
     public function describe($name = null)
     {
         $params = array();
         $params['Action'] = 'DescribeSecurityGroups';
         if(is_array($name) && !empty($name)) {
             foreach($name as $k=>$name) {
                 $params['GroupName.' . ($k+1)] = $name;
             }
         } elseif($name) {
             $params['GroupName.1'] = $name;
         }
 
         $response = $this->sendRequest($params);
         $xpath = $response->getXPath();
 
         $return = array();
 
         $nodes = $xpath->query('//ec2:securityGroupInfo/ec2:item');
 
         foreach($nodes as $node) {
             $item = array();
 
             $item['ownerId'] = $xpath->evaluate('string(ec2:ownerId/text())', $node);
             $item['groupName'] = $xpath->evaluate('string(ec2:groupName/text())', $node);
             $item['groupDescription'] = $xpath->evaluate('string(ec2:groupDescription/text())', $node);
 
             $ip_nodes = $xpath->query('ec2:ipPermissions/ec2:item', $node);
 
             foreach($ip_nodes as $ip_node) {
                 $sItem = array();
 
                 $sItem['ipProtocol'] = $xpath->evaluate('string(ec2:ipProtocol/text())', $ip_node);
                 $sItem['fromPort'] = $xpath->evaluate('string(ec2:fromPort/text())', $ip_node);
                 $sItem['toPort'] = $xpath->evaluate('string(ec2:toPort/text())', $ip_node);
 
                 $ips = $xpath->query('ec2:ipRanges/ec2:item', $ip_node);
 
                 $sItem['ipRanges'] = array();
                 foreach($ips as $ip) {
                     $sItem['ipRanges'][] = $xpath->evaluate('string(ec2:cidrIp/text())', $ip);
                 }
 
                 if(count($sItem['ipRanges']) == 1) {
                     $sItem['ipRanges'] = $sItem['ipRanges'][0];
                 }
 
                 $item['ipPermissions'][] = $sItem;
                 unset($ip_node, $sItem);
             }
 
             $return[] = $item;
 
             unset($item, $node);
         }
 
 
         return $return;
     }
 
     /**
      * Deletes a security group.
      *
      * If you attempt to delete a security group that contains instances, a fault is returned.
      * If you attempt to delete a security group that is referenced by another security group,
      * a fault is returned. For example, if security group B has a rule that allows access
      * from security group A, security group A cannot be deleted until the allow rule is removed.
      *
      * @param string $name          Name of the security group to delete.
      * @return boolean
      */
     public function delete($name)
     {
         $params = array();
         $params['Action'] = 'DeleteSecurityGroup';
         $params['GroupName'] = $name;
 
         $response = $this->sendRequest($params);
         $xpath = $response->getXPath();
         $success  = $xpath->evaluate('string(//ec2:return/text())');
 
         return ($success === "true");
     }
 
     /**
      * Adds permissions to a security group
      *
      * Permissions are specified by the IP protocol (TCP, UDP or ICMP), the source of the request
      * (by IP range or an Amazon EC2 user-group pair), the source and destination port ranges
      * (for TCP and UDP), and the ICMP codes and types (for ICMP). When authorizing ICMP, -1
      * can be used as a wildcard in the type and code fields.
      *
      * Permission changes are propagated to instances within the security group as quickly as
      * possible. However, depending on the number of instances, a small delay might occur.
      *
      *
      * @param string $name                  Name of the group to modify.
      * @param string $ipProtocol            IP protocol to authorize access to when operating on a CIDR IP.
      * @param integer $fromPort             Bottom of port range to authorize access to when operating on a CIDR IP.
      *                                      This contains the ICMP type if ICMP is being authorized.
      * @param integer $toPort               Top of port range to authorize access to when operating on a CIDR IP.
      *                                      This contains the ICMP code if ICMP is being authorized.
      * @param string $cidrIp                CIDR IP range to authorize access to when operating on a CIDR IP.
      * @return boolean
      */
     public function authorizeIp($name, $ipProtocol, $fromPort, $toPort, $cidrIp)
     {
         $params = array();
         $params['Action'] = 'AuthorizeSecurityGroupIngress';
         $params['GroupName'] = $name;
         $params['IpProtocol'] = $ipProtocol;
         $params['FromPort'] = $fromPort;
         $params['ToPort'] = $toPort;
         $params['CidrIp'] = $cidrIp;
 
         $response = $this->sendRequest($params);
         $xpath = $response->getXPath();
         $success  = $xpath->evaluate('string(//ec2:return/text())');
 
         return ($success === "true");
 
     }
 
     /**
      * Adds permissions to a security group
      *
      * When authorizing a user/group pair permission, GroupName, SourceSecurityGroupName and
      * SourceSecurityGroupOwnerId must be specified.
      *
      * Permission changes are propagated to instances within the security group as quickly as
      * possible. However, depending on the number of instances, a small delay might occur.
      *
      * @param string $name                  Name of the group to modify.
      * @param string $groupName             Name of security group to authorize access to when operating on a user/group pair.
      * @param string $ownerId               Owner of security group to authorize access to when operating on a user/group pair.
      * @return boolean
      */
     public function authorizeGroup($name, $groupName, $ownerId)
     {
         $params = array();
         $params['Action'] = 'AuthorizeSecurityGroupIngress';
         $params['GroupName'] = $name;
         $params['SourceSecurityGroupName'] = $groupName;
         $params['SourceSecurityGroupOwnerId'] = $ownerId;
 
 
         $response = $this->sendRequest($params);
         $xpath = $response->getXPath();
         $success  = $xpath->evaluate('string(//ec2:return/text())');
 
 
         return ($success === "true");
     }
 
     /**
      * Revokes permissions from a security group. The permissions used to revoke must be specified
      * using the same values used to grant the permissions.
      *
      * Permissions are specified by the IP protocol (TCP, UDP or ICMP), the source of the request
      * (by IP range or an Amazon EC2 user-group pair), the source and destination port ranges
      * (for TCP and UDP), and the ICMP codes and types (for ICMP). When authorizing ICMP, -1
      * can be used as a wildcard in the type and code fields.
      *
      * Permission changes are propagated to instances within the security group as quickly as
      * possible. However, depending on the number of instances, a small delay might occur.
      *
      *
      * @param string $name                  Name of the group to modify.
      * @param string $ipProtocol            IP protocol to revoke access to when operating on a CIDR IP.
      * @param integer $fromPort             Bottom of port range to revoke access to when operating on a CIDR IP.
      *                                      This contains the ICMP type if ICMP is being revoked.
      * @param integer $toPort               Top of port range to revoked access to when operating on a CIDR IP.
      *                                      This contains the ICMP code if ICMP is being revoked.
      * @param string $cidrIp                CIDR IP range to revoke access to when operating on a CIDR IP.
      * @return boolean
      */
     public function revokeIp($name, $ipProtocol, $fromPort, $toPort, $cidrIp)
     {
         $params = array();
         $params['Action'] = 'RevokeSecurityGroupIngress';
         $params['GroupName'] = $name;
         $params['IpProtocol'] = $ipProtocol;
         $params['FromPort'] = $fromPort;
         $params['ToPort'] = $toPort;
         $params['CidrIp'] = $cidrIp;
 
         $response = $this->sendRequest($params);
         $xpath = $response->getXPath();
         $success  = $xpath->evaluate('string(//ec2:return/text())');
 
         return ($success === "true");
     }
 
     /**
      * Revokes permissions from a security group. The permissions used to revoke must be specified
      * using the same values used to grant the permissions.
      *
      * Permission changes are propagated to instances within the security group as quickly as
      * possible. However, depending on the number of instances, a small delay might occur.
      *
      * When revoking a user/group pair permission, GroupName, SourceSecurityGroupName and
      * SourceSecurityGroupOwnerId must be specified.
      *
      * @param string $name                  Name of the group to modify.
      * @param string $groupName             Name of security group to revoke access to when operating on a user/group pair.
      * @param string $ownerId               Owner of security group to revoke access to when operating on a user/group pair.
      * @return boolean
      */
     public function revokeGroup($name, $groupName, $ownerId)
     {
         $params = array();
         $params['Action'] = 'RevokeSecurityGroupIngress';
         $params['GroupName'] = $name;
         $params['SourceSecurityGroupName'] = $groupName;
         $params['SourceSecurityGroupOwnerId'] = $ownerId;
 
 
         $response = $this->sendRequest($params);
         $xpath = $response->getXPath();
         $success  = $xpath->evaluate('string(//ec2:return/text())');
 
 
         return ($success === "true");
     }
 }