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package eu.etaxonomy.cdm.persistence.permission;
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import org.springframework.security.access.AccessDeniedException;
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import eu.etaxonomy.cdm.database.PermissionDeniedException;
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/**
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* This utility class helps finding security related exceptions in Throwables.
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*
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* Note: This class is more or less a clone of the same named class in cdmlib-test.
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* Any changes in either of these classes should be also done in the other class.
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* In future theses classes should be merged.
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*
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* @author a.kohlbecker
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* @author a.mueller
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* @since Jun 05, 2020
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*/
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public class SecurityExceptionUtils {
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//this is to decouple SecurityExceptionUtils from persistence and spring-security
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public static Class<?> permissionDeniedExceptionClass = PermissionDeniedException.class;
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public static Class<?> accessDeniedException = AccessDeniedException.class;
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/**
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* Finds a nested RuntimeExceptions of the types {@link PermissionDeniedException}, {@link AccessDeniedException}
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* or returns null.
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* @param exception
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* @return
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*/
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public static RuntimeException findSecurityRuntimeException(Throwable exception) {
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if( permissionDeniedExceptionClass.isInstance(exception) || accessDeniedException.isInstance(exception) ){
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return (RuntimeException) exception;
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} else if(exception != null ){
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return findSecurityRuntimeException(exception.getCause());
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}
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return null;
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}
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/**
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* Find in the nested <code>exception</code> the exception of type <code>clazz</code>
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* or returns <code>null</code> if no such exception is found.
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*
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* @param clazz
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* @param exception the nested <code>Throwable</code> to search in.
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* @return
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*/
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public static <T extends Throwable> T findThrowableOfTypeIn(Class<T> clazz, Throwable exception) {
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if( permissionDeniedExceptionClass.isInstance(exception) ){
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return (T)exception;
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} else if(exception != null ){
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return findThrowableOfTypeIn(clazz, exception.getCause());
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}
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return null;
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}
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}
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