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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) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Securitygroups.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, describe, grand and revoke sercurity permissions.
*
* @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_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");
}
}
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