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package javax.security.enterprise.authentication.mechanism.http;
import java.security.Principal;
import java.util.Set;
import javax.security.auth.Subject;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.message.MessageInfo;
import javax.security.enterprise.AuthenticationStatus;
import javax.security.enterprise.CallerPrincipal;
import javax.security.enterprise.SecurityContext;
import javax.security.enterprise.identitystore.CredentialValidationResult;
import javax.security.enterprise.identitystore.CredentialValidationResult.Status;
import javax.servlet.RequestDispatcher;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* HttpMessageContext contains all of the per-request state information and encapsulates the client request,
* server response, container handler for authentication callbacks, and the subject representing the caller.
*
*/
public interface HttpMessageContext {
/**
* Checks if the currently requested resource is protected or not. A protected resource
* is a resource (e.g. a Servlet, JSF page, JSP page etc) for which a constraint has been defined
* in e.g. web.xml.
*
* @return true if a protected resource was requested, false if a public resource was requested.
*/
boolean isProtected();
/**
* Checks if the current call to an authentication mechanism is the result from the
* application calling {@link SecurityContext#authenticate(HttpServletRequest, HttpServletResponse, AuthenticationParameters)}
*
* If SecurityContext#authenticate was not called, the authentication mechanism may have been invoked by the
* container at the start of a request.
*
* @return true if SecurityContext#authenticate was called, false if not.
*/
boolean isAuthenticationRequest();
/**
* Check if the runtime has been asked to register an authentication session duing the current request.
*
* @return true if code has asked to register an authentication session, false otherwise.
*/
boolean isRegisterSession();
/**
* Asks the runtime to register an authentication session. This will automatically remember the logged-in status
* as long as the current HTTP session remains valid. Without this being asked, a {@link HttpAuthenticationMechanism}
* has to manually re-authenticate with the runtime at the start of each request.
*
* @param callerName the caller name for which authentication should be be remembered
* @param groups the groups for which authentication should be remembered.
*/
void setRegisterSession(String callerName, Set groups);
/**
* Convenience method to clean the subject associated with this context.
*
*
* Cleaning this subject is done as defined by the Servlet Container Profile of JASPIC
* (JSR 196) for the ServerAuthModule#cleanSubject method and the
* {@link HttpAuthenticationMechanism#cleanSubject(HttpServletRequest, HttpServletResponse, HttpMessageContext)}
* method defined by this specification.
*/
void cleanClientSubject();
/**
* Returns the parameters that were provided with the SecurityContext#authenticate(AuthParameters) call.
*
* @return the parameters that were provided with the SecurityContext#authenticate(AuthParameters) call, or a default instance. Never null.
*/
AuthenticationParameters getAuthParameters();
/**
* Returns the low level JSR 196 handler that the runtime provided when creating this {@link HttpMessageContext},
* and which this context uses to communicate the authentication details to the runtime.
*
*
* Note: This is a low level object that most higher level code would not need to use directly.
*
* @return the handler that the runtime provided to this context
*/
CallbackHandler getHandler();
/**
* Returns the the low level JSR 196 message info instance for the current request.
*
*
* Note: This is a low level object that most higher level code would not need to use directly.
*
* @return the message info instance for the current request.
*/
MessageInfo getMessageInfo();
/**
* Returns the subject for which authentication is to take place.
*
*
* Note: This is a low level object that most higher level code would not need to use directly.
*
* @return the subject for which authentication is to take place.
*/
Subject getClientSubject();
/**
* Returns the request object associated with the current request.
*
* @return the request object associated with the current request.
*/
HttpServletRequest getRequest();
/**
* Sets the request object.
*
* @param request the request object to be set
*
*/
void setRequest(HttpServletRequest request);
/**
* Sets the request object.
*
* @param request the request object to be set.
*
* @return the HttpMessageContext instance on which this method was called, useful for
* fluent style call call chains.
*/
HttpMessageContext withRequest(HttpServletRequest request);
/**
* Returns the response object associated with the current request.
*
* @return the response object associated with the current request.
*/
HttpServletResponse getResponse();
/**
* Set the response object.
*
* @param response the response object to be set.
*/
void setResponse(HttpServletResponse response);
/**
* Sets the response status to SC_FOUND 302 (Found)
*
*
* As a convenience this method returns SEND_CONTINUE, so this method can be used in
* one fluent return statement from an {@link HttpAuthenticationMechanism}
*
* @param location the location to redirect to
*
* @return {@link AuthenticationStatus#SEND_CONTINUE}
*
* @see HttpServletResponse#sendRedirect(String)
*/
AuthenticationStatus redirect(String location);
/**
* Forwards to another resource (servlet, JSP file, or HTML file) on the server.
*
*
* As a convenience this method returns SEND_CONTINUE, so this method can be used in
* one fluent return statement from an {@link HttpAuthenticationMechanism}
*
* @param path a String specifying the pathname to the resource.
*
* @return {@link AuthenticationStatus#SEND_CONTINUE}
*
* @see RequestDispatcher#forward(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
*/
AuthenticationStatus forward(String path);
/**
* Sets the response status to 401 (unauthorized).
*
* As a convenience this method returns SEND_FAILURE, so this method can be used in
* one fluent return statement from an {@link HttpAuthenticationMechanism}
*
* @return {@link AuthenticationStatus#SEND_FAILURE}
*/
AuthenticationStatus responseUnauthorized();
/**
* Sets the response status to 404 (not found).
*
* As a convenience this method returns SEND_FAILURE, so this method can be used in
* one fluent return statement from an {@link HttpAuthenticationMechanism}
*
* @return {@link AuthenticationStatus#SEND_FAILURE}
*/
AuthenticationStatus responseNotFound();
/**
* Asks the container to register the given caller name and groups in order to make
* them available to the application for use with {@link SecurityContext#isCallerInRole(String)} etc.
*
*
* Note that after this call returned, the authenticated identity will not be immediately active. This
* will only take place (should no errors occur) after the authentication mechanism
* in which this call takes place returns control back to the container (runtime).
*
*
* As a convenience this method returns SUCCESS, so this method can be used in
* one fluent return statement from an {@link HttpAuthenticationMechanism}
*
* @param callername the caller name that will become the caller principal
* @param groups the groups associated with the caller principal
* @return {@link AuthenticationStatus#SUCCESS}
*
*/
AuthenticationStatus notifyContainerAboutLogin(String callername, Set groups);
/**
* Asks the container to register the given caller principal and groups in order to make
* them available to the application for use with {@link SecurityContext#isCallerInRole(String)} etc.
*
*
* Note that this call may result in the container establishing two caller principals to
* represent the caller's identity -- the Principal provided here as the principal parameter,
* and a second principal used as the container's representation of the caller identity.
* A second principal is added only if the container uses a different Principal type to
* represent the caller. If the types are the same, only one Principal is added.
*
*
* If a second principal is added, the value returned by {@link Principal#getName()}
* will be the same for both principals.
*
*
* When two principals are added, the container's caller principal is returned from
* {@link SecurityContext#getCallerPrincipal()}, and the principal supplied here
* as a parameter can be retrieved using {@link SecurityContext#getPrincipalsByType(Class)}.
* When only one is added, it is returned by {@link SecurityContext#getCallerPrincipal()}.
*
*
* Note that after this call returned, the authenticated identity will not be immediately active. This
* will only take place (should no errors occur) after the authentication mechanism
* in which this call takes place returns control back to the container (runtime).
*
*
* As a convenience this method returns SUCCESS, so this method can be used in
* one fluent return statement from an {@link HttpAuthenticationMechanism}
*
* @param principal the Principal that will become the caller principal
* @param groups the groups associated with the caller principal
* @return {@link AuthenticationStatus#SUCCESS}
*
*/
AuthenticationStatus notifyContainerAboutLogin(Principal principal, Set groups);
/**
* Convenience method intended to pass the CredentialValidationResult result of an
* identity store directly on to the container.
*
*
* If the outcome from the given {@link CredentialValidationResult#getStatus()} equals
* {@link Status#VALID}, the {@link CallerPrincipal} and groups are obtained from the
* CredentialValidationResult and passed into
* {@link HttpMessageContext#notifyContainerAboutLogin(Principal, Set)}.
*
*
* If the outcome from the given {@link CredentialValidationResult#getStatus()} is not
* equal to {@link Status#VALID} a failure result is returned.
*
* @param result a CredentialValidationResult which is inspected for its status and from which the principal and groups
* are taken.
*
* @return {@link AuthenticationStatus#SUCCESS} if {@link CredentialValidationResult#getStatus()}
* equals {@link Status#VALID} otherwise {@link AuthenticationStatus#SEND_FAILURE}
*
*/
AuthenticationStatus notifyContainerAboutLogin(CredentialValidationResult result);
/**
* Instructs the container to "do nothing".
*
*
* When intending to do nothing, a JSR 375 authentication mechanism has to indicate this
* explicitly via its return value.
*
*
* As a convenience this method returns NOT_DONE, so this method can be used in
* one fluent return statement from an {@link HttpAuthenticationMechanism}
*
* @return {@link AuthenticationStatus#NOT_DONE}
*/
AuthenticationStatus doNothing();
/**
* Gets the Principal set by a call to notifyContainerAboutLogin().
*
* @return The caller principal
*/
Principal getCallerPrincipal();
/**
* Gets the groups set by a call to notifyContainerAboutLogin().
*
* @return The groups
*/
Set getGroups();
}