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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 ReplaceHooks {
@MethodHook(type = HookType.REPLACE,
targetClassName = "com.code_intelligence.jazzer.instrumentor.ReplaceHooksTarget",
targetMethod = "shouldReturnTrue1")
public static boolean
patchShouldReturnTrue1(MethodHandle method, Object thisObject, Object[] arguments, int hookId) {
return true;
}
@MethodHook(type = HookType.REPLACE,
targetClassName = "com.code_intelligence.jazzer.instrumentor.ReplaceHooksTarget",
targetMethod = "shouldReturnTrue2")
public static Boolean
patchShouldReturnTrue2(MethodHandle method, Object thisObject, Object[] arguments, int hookId) {
return true;
}
@MethodHook(type = HookType.REPLACE,
targetClassName = "com.code_intelligence.jazzer.instrumentor.ReplaceHooksTarget",
targetMethod = "shouldReturnTrue3")
public static Object
patchShouldReturnTrue3(MethodHandle method, Object thisObject, Object[] arguments, int hookId) {
return true;
}
@MethodHook(type = HookType.REPLACE,
targetClassName = "com.code_intelligence.jazzer.instrumentor.ReplaceHooksTarget",
targetMethod = "shouldReturnFalse1")
public static Boolean
patchShouldReturnFalse1(MethodHandle method, Object thisObject, Object[] arguments, int hookId) {
return false;
}
@MethodHook(type = HookType.REPLACE,
targetClassName = "com.code_intelligence.jazzer.instrumentor.ReplaceHooksTarget",
targetMethod = "shouldReturnFalse2")
@MethodHook(type = HookType.REPLACE,
targetClassName = "com.code_intelligence.jazzer.instrumentor.ReplaceHooksTarget",
targetMethod = "shouldReturnFalse3")
public static Object
patchShouldReturnFalse2(MethodHandle method, Object thisObject, Object[] arguments, int hookId) {
return false;
}
@MethodHook(type = HookType.REPLACE,
targetClassName = "com.code_intelligence.jazzer.instrumentor.ReplaceHooksTarget",
targetMethod = "shouldReturnReversed",
targetMethodDescriptor = "(Ljava/lang/String;)Ljava/lang/String;")
public static String
patchShouldReturnReversed(
MethodHandle method, Object thisObject, Object[] arguments, int hookId) {
return new StringBuilder((String) arguments[0]).reverse().toString();
}
@MethodHook(type = HookType.REPLACE,
targetClassName = "com.code_intelligence.jazzer.instrumentor.ReplaceHooksTarget",
targetMethod = "shouldIncrement")
public static int
patchShouldIncrement(MethodHandle method, Object thisObject, Object[] arguments, int hookId) {
return ((int) arguments[0]) + 1;
}
@MethodHook(type = HookType.REPLACE,
targetClassName = "com.code_intelligence.jazzer.instrumentor.ReplaceHooksTarget",
targetMethod = "shouldCallPass")
public static void
patchShouldCallPass(MethodHandle method, Object thisObject, Object[] arguments, int hookId) {
((ReplaceHooksTargetContract) thisObject).pass("shouldCallPass");
}
@MethodHook(type = HookType.REPLACE,
targetClassName = "com.code_intelligence.jazzer.instrumentor.ReplaceHooksTarget",
targetMethod = "idempotent", targetMethodDescriptor = "(I)I")
public static int
patchIdempotent(MethodHandle method, Object thisObject, Object[] arguments, int hookId)
throws Throwable {
// Iterate the function twice to pass the test.
int input = (int) arguments[0];
int temp = (int) method.invokeWithArguments(thisObject, input);
return (int) method.invokeWithArguments(thisObject, temp);
}
@MethodHook(type = HookType.REPLACE, targetClassName = "java.util.AbstractList",
targetMethod = "get", targetMethodDescriptor = "(I)Ljava/lang/Object;")
public static Object
patchAbstractListGet(MethodHandle method, Object thisObject, Object[] arguments, int hookId) {
return true;
}
}
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