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package org.glassfish.jersey.message.filtering;
import java.lang.annotation.Annotation;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import javax.ws.rs.core.SecurityContext;
import javax.annotation.security.DenyAll;
import javax.annotation.security.PermitAll;
import javax.annotation.security.RolesAllowed;
import org.glassfish.jersey.message.filtering.spi.FilteringHelper;
/**
* Utility methods for security Entity Data Filtering.
*
* @author Michal Gajdos
*/
final class SecurityHelper {
private static final Set<String> roles = new HashSet<>();
/**
* Get entity-filtering scopes of security annotations present among given annotations.
* <p>
* A scope look like:
* <ul>
* <li><fully qualified annotation class name>, or</li>
* <li><fully qualified annotation class name>_<role></li>
* </ul>
* </p>
*
* @param annotations a list of annotations (doesn't need to contain only security annotations)
* @return a set of entity-filtering scopes.
*/
static Set<String> getFilteringScopes(final Annotation[] annotations) {
return getFilteringScopes(null, annotations);
}
/**
* Get entity-filtering scopes of security annotations present among given annotations with respect to given
* {@link SecurityContext}. Resulting set contains only scopes that pass the security context check.
* <p>
* A scope look like:
* <ul>
* <li><fully qualified annotation class name>, or</li>
* <li><fully qualified annotation class name>_<role></li>
* </ul>
* </p>
*
* @param securityContext security context to check whether a user is in specified logical role.
* @param annotations a list of annotations (doesn't need to contain only security annotations)
* @return a set of entity-filtering scopes.
*/
static Set<String> getFilteringScopes(final SecurityContext securityContext, final Annotation[] annotations) {
if (annotations.length == 0) {
return Collections.emptySet();
}
for (final Annotation annotation : annotations) {
if (annotation instanceof RolesAllowed) {
final Set<String> bindings = new HashSet<>();
for (final String role : ((RolesAllowed) annotation).value()) {
if (securityContext == null || securityContext.isUserInRole(role)) {
bindings.add(getRolesAllowedScope(role));
}
}
return bindings;
} else if (annotation instanceof PermitAll) {
return FilteringHelper.getDefaultFilteringScope();
} else if (annotation instanceof DenyAll) {
return null;
}
}
return Collections.emptySet();
}
/**
* Get entity-filtering scope for {@link RolesAllowed}s role.
*
* @param role role to retrieve entity-filtering scope for.
* @return entity-filtering scope.
*/
static String getRolesAllowedScope(final String role) {
roles.add(role);
return RolesAllowed.class.getName() + "_" + role;
}
/**
* Get authorization roles that has been derived from examining entity classes.
*
* @return already processed authorization roles.
*/
static Set<String> getProcessedRoles() {
return roles;
}
/**
* Prevent instantiation.
*/
private SecurityHelper() {
}
}