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// Copyright 2021 Code Intelligence GmbH
//
// 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.
package com.code_intelligence.jazzer.instrumentor;
import com.code_intelligence.jazzer.api.HookType;
import com.code_intelligence.jazzer.api.MethodHook;
import java.lang.invoke.MethodHandle;
public class BeforeHooks {
@MethodHook(type = HookType.BEFORE,
targetClassName = "com.code_intelligence.jazzer.instrumentor.BeforeHooksTarget",
targetMethod = "hasFunc1BeenCalled", targetMethodDescriptor = "()Z")
public static void
patchHasFunc1BeenCalled(MethodHandle method, Object thisObject, Object[] arguments, int hookId) {
((BeforeHooksTargetContract) thisObject).func1();
}
@MethodHook(type = HookType.BEFORE,
targetClassName = "com.code_intelligence.jazzer.instrumentor.BeforeHooksTarget",
targetMethod = "getTimesCalled", targetMethodDescriptor = "()Ljava/lang/Integer;")
public static void
patchHasBeenCalled(MethodHandle method, Object thisObject, Object[] arguments, int hookId)
throws Throwable {
// Invoke static method getTimesCalled() again to pass the test.
method.invoke();
}
@MethodHook(type = HookType.BEFORE,
targetClassName = "com.code_intelligence.jazzer.instrumentor.BeforeHooksTarget",
targetMethod = "hasFuncWithArgsBeenCalled")
public static void
patchHasFuncWithArgsBeenCalled(
MethodHandle method, Object thisObject, Object[] arguments, int hookId) {
if (arguments.length == 2 && arguments[0] instanceof Boolean
&& arguments[1] instanceof String) {
// only if the arguments passed to the hook match the expected argument types and count invoke
// the method to pass the test
((BeforeHooksTargetContract) thisObject).setFuncWithArgsCalled((Boolean) arguments[0]);
}
}
}
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