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The IAM plugin will provide another implementation of the SecurityChecker intrerfaceinterface. We will also have to add to this interface some more methods or change some signatures to facilitate policy and Action based access control.
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/**
* SecurityChecker checks the ownership and access control to objects within
*/
public interface SecurityChecker extends Adapter {
...
/**
* Checks if the account can access the object.
*
* @param caller
* account to check against.
* @param entity
* object that the account is trying to access.
* @param accessType
*
* @param action
*
* @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, AccessType accessType, String action) throws PermissionDeniedException;
....
}
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Besides SecurityChecker interface, IAM plugin will also implement another QueryChecker interface to allow CloudStack to do proper row filter in ListAPI based on caller's policy.
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/**
* QueryChecker returns granted domain, or account or resources for caller.
*/
public interface QueryChecker extends Adapter {
...
/**
* List granted domains for the caller, given a specific entity type.
*
* @param caller account to check against.
* @param entityType entity type
* @return list of domain Ids granted to the caller account.
*/
List<Long> getAuthorizedDomains(Account caller, String entityType);
/**
* List granted accounts for the caller, given a specific entity type.
*
* @param caller account to check against.
* @param entityType entity type
* @return list of domain Ids granted to the caller account.
*/
List<Long> getAuthorizedAccounts(Account caller, String entityType);
/**
* List granted resources for the caller, given a specific entity type.
*
* @param caller account to check against.
* @param entityType entity type
* @return list of domain Ids granted to the caller account.
*/
List<Long> getGrantedResources(Account caller, String entityType);
}
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Response View
Currently CloudStack provides different response views for Root admin and non-root user, some response fields are only visible to root admin. Basically we have provided two static response views (Admin view and User view), domain admin will also a User view. With new IAM service introduced, we should also allow customers to be able to specify what view should be applied to the new Acl group when they are creating a new customized Acl group, for example, customer care group. To achieve that, we will implement as follows:
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