oss-fuzz/projects/tomcat/ELEvaluationFuzzer.java

45 lines
1.6 KiB
Java

// Copyright 2022 Google LLC
//
// 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
//
// http://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.
//
////////////////////////////////////////////////////////////////////////////////
import com.code_intelligence.jazzer.api.FuzzedDataProvider;
import com.code_intelligence.jazzer.api.FuzzerSecurityIssueHigh;
import org.apache.el.*;
import jakarta.el.ELException;
import jakarta.el.ValueExpression;
import org.apache.el.lang.ELSupport;
import org.apache.jasper.el.ELContextImpl;
public class ELEvaluationFuzzer {
public static void fuzzerTestOneInput(FuzzedDataProvider data) {
String str = data.consumeRemainingAsString();
try {
evaluateExpression(str);
} catch (ELException | IllegalArgumentException | ArithmeticException e) {
}
}
public static String evaluateExpression(String expression) {
ExpressionFactoryImpl exprFactory = new ExpressionFactoryImpl();
ELContextImpl ctx = new ELContextImpl(exprFactory);
ctx.setFunctionMapper(new TesterFunctions.FMapper());
ValueExpression ve = exprFactory.createValueExpression(ctx, expression, String.class);
return (String) ve.getValue(ctx);
}
}