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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.instrumentor.PatchTestUtils.bytecodeToClass
import com.code_intelligence.jazzer.instrumentor.PatchTestUtils.classToBytecode
import org.junit.Test
import java.io.File
private fun getOriginalBeforeHooksTargetInstance(): BeforeHooksTargetContract {
return BeforeHooksTarget()
}
private fun getNoHooksBeforeHooksTargetInstance(): BeforeHooksTargetContract {
val originalBytecode = classToBytecode(BeforeHooksTarget::class.java)
// Let the bytecode pass through the hooking logic, but don't apply any hooks.
val patchedBytecode = HookInstrumentor(emptyList(), false, null).instrument(
BeforeHooksTarget::class.java.name.replace('.', '/'),
originalBytecode,
)
val patchedClass = bytecodeToClass(BeforeHooksTarget::class.java.name, patchedBytecode)
return patchedClass.getDeclaredConstructor().newInstance() as BeforeHooksTargetContract
}
private fun getPatchedBeforeHooksTargetInstance(classWithHooksEnabledField: Class<*>?): BeforeHooksTargetContract {
val originalBytecode = classToBytecode(BeforeHooksTarget::class.java)
val hooks = Hooks.loadHooks(emptyList(), setOf(BeforeHooks::class.java.name)).first().hooks
val patchedBytecode = HookInstrumentor(
hooks,
false,
classWithHooksEnabledField = classWithHooksEnabledField?.name?.replace('.', '/'),
).instrument(BeforeHooksTarget::class.java.name.replace('.', '/'), originalBytecode)
// Make the patched class available in bazel-testlogs/.../test.outputs for manual inspection.
val outDir = System.getenv("TEST_UNDECLARED_OUTPUTS_DIR")
File("$outDir/${BeforeHooksTarget::class.java.simpleName}.class").writeBytes(originalBytecode)
File("$outDir/${BeforeHooksTarget::class.java.simpleName}.patched.class").writeBytes(patchedBytecode)
val patchedClass = bytecodeToClass(BeforeHooksTarget::class.java.name, patchedBytecode)
return patchedClass.getDeclaredConstructor().newInstance() as BeforeHooksTargetContract
}
class BeforeHooksPatchTest {
@Test
fun testOriginal() {
assertSelfCheck(getOriginalBeforeHooksTargetInstance(), false)
}
@Test
fun testPatchedWithoutHooks() {
assertSelfCheck(getNoHooksBeforeHooksTargetInstance(), false)
}
@Test
fun testPatched() {
assertSelfCheck(getPatchedBeforeHooksTargetInstance(null), true)
}
object HooksEnabled {
@Suppress("unused")
const val hooksEnabled = true
}
object HooksDisabled {
@Suppress("unused")
const val hooksEnabled = false
}
@Test
fun testPatchedWithConditionalHooksEnabled() {
assertSelfCheck(getPatchedBeforeHooksTargetInstance(HooksEnabled::class.java), true)
}
@Test
fun testPatchedWithConditionalHooksDisabled() {
assertSelfCheck(getPatchedBeforeHooksTargetInstance(HooksDisabled::class.java), false)
}
}
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