|
@@ -0,0 +1,51 @@
|
|
|
+/*
|
|
|
+ * Copyright 2002-2024 the original author or authors.
|
|
|
+ *
|
|
|
+ * Licensed under the Apache License, Version 2.0 (the "License");
|
|
|
+ * you may not use this file except in compliance with the License.
|
|
|
+ * You may obtain a copy of the License at
|
|
|
+ *
|
|
|
+ * https://www.apache.org/licenses/LICENSE-2.0
|
|
|
+ *
|
|
|
+ * Unless required by applicable law or agreed to in writing, software
|
|
|
+ * distributed under the License is distributed on an "AS IS" BASIS,
|
|
|
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
|
+ * See the License for the specific language governing permissions and
|
|
|
+ * limitations under the License.
|
|
|
+ */
|
|
|
+
|
|
|
+package org.springframework.security.authorization.method;
|
|
|
+
|
|
|
+import org.springframework.expression.EvaluationContext;
|
|
|
+import org.springframework.expression.EvaluationException;
|
|
|
+import org.springframework.expression.Expression;
|
|
|
+import org.springframework.security.authorization.AuthorizationResult;
|
|
|
+import org.springframework.security.authorization.ExpressionAuthorizationDecision;
|
|
|
+
|
|
|
+final class ExpressionUtils {
|
|
|
+
|
|
|
+ private ExpressionUtils() {
|
|
|
+ }
|
|
|
+
|
|
|
+ static AuthorizationResult evaluate(Expression expr, EvaluationContext ctx) {
|
|
|
+ try {
|
|
|
+ Object result = expr.getValue(ctx);
|
|
|
+ if (result instanceof AuthorizationResult decision) {
|
|
|
+ return decision;
|
|
|
+ }
|
|
|
+ if (result instanceof Boolean granted) {
|
|
|
+ return new ExpressionAuthorizationDecision(granted, expr);
|
|
|
+ }
|
|
|
+ if (result == null) {
|
|
|
+ return null;
|
|
|
+ }
|
|
|
+ throw new IllegalArgumentException(
|
|
|
+ "SpEL expression must return either a Boolean or an AuthorizationDecision");
|
|
|
+ }
|
|
|
+ catch (EvaluationException ex) {
|
|
|
+ throw new IllegalArgumentException("Failed to evaluate expression '" + expr.getExpressionString() + "'",
|
|
|
+ ex);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+}
|