/**
 * 
 */
package com.cloud.acl;

import com.cloud.dc.DataCenter;
import com.cloud.domain.Domain;
import com.cloud.exception.PermissionDeniedException;
import com.cloud.offering.DiskOffering;
import com.cloud.offering.ServiceOffering;
import com.cloud.user.Account;
import com.cloud.user.User;
import com.cloud.utils.component.Adapter;

/**
 * SecurityChecker checks the ownership and access control to objects within
 * the management stack for users and accounts. 
 */
public interface SecurityChecker extends Adapter {
    /**
     * Checks if the account owns the object.
     * 
     * @param account account to check against.
     * @param object object that the account is trying to access.
     * @return true if access allowed.  false if this adapter cannot authenticate ownership.
     * @throws PermissionDeniedException if this adapter is suppose to authenticate ownership and the check failed.
     */
    boolean checkAccess(Account account, Domain domain) throws PermissionDeniedException;
    
    /**
     * Checks if the user belongs to an account that owns the object.
     * 
     * @param user user to check against.
     * @param object object that the account is trying to access.
     * @return true if access allowed.  false if this adapter cannot authenticate ownership.
     * @throws PermissionDeniedException if this adapter is suppose to authenticate ownership and the check failed.
     */
    boolean checkAccess(User user, Domain domain) throws PermissionDeniedException;
    
    /**
     * Checks if the account can access the object.
     * 
     * @param caller account to check against.
     * @param entity object that the account is trying to access.
     * @return true if access allowed.  false if this adapter cannot provide permission.
     * @throws PermissionDeniedException if this adapter is suppose to authenticate ownership and the check failed.
     */
    boolean checkAccess(Account caller, ControlledEntity entity) throws PermissionDeniedException;

    /**
     * Checks if the user belongs to an account that can access the object.
     * 
     * @param user user to check against.
     * @param entity object that the account is trying to access.
     * @return true if access allowed.  false if this adapter cannot authenticate ownership.
     * @throws PermissionDeniedException if this adapter is suppose to authenticate ownership and the check failed.
     */
    boolean checkAccess(User user, ControlledEntity entity) throws PermissionDeniedException;
    
    boolean checkAccess(Account account, DataCenter zone) throws PermissionDeniedException;

    public boolean checkAccess(Account account, ServiceOffering so) throws PermissionDeniedException;

	boolean checkAccess(Account account, DiskOffering dof) throws PermissionDeniedException;
}