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// ASM: a very small and fast Java bytecode manipulation framework
// Copyright (c) 2000-2011 INRIA, France Telecom
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// 3. Neither the name of the copyright holders nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE.
package org.objectweb.asm.tree.analysis;
import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.junit.jupiter.api.Assumptions.assumeFalse;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.function.Executable;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.MethodSource;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.Label;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.Type;
import org.objectweb.asm.test.AsmTest;
import org.objectweb.asm.tree.ClassNode;
import org.objectweb.asm.tree.MethodNode;
/**
* Unit tests for {@link Analyzer}, when used with a {@link SimpleVerifier}.
*
* @author Eric Bruneton
*/
class AnalyzerWithSimpleVerifierTest extends AsmTest {
private static final String CLASS_NAME = "C";
@Test
void testAnalyze_invalidInvokevirtual() {
MethodNode methodNode =
new MethodNodeBuilder()
.insn(Opcodes.ACONST_NULL)
.typeInsn(Opcodes.CHECKCAST, "java/lang/Object")
.methodInsn(Opcodes.INVOKEVIRTUAL, "java/util/ArrayList", "size", "()I", false)
.vreturn()
.build();
Executable analyze = () -> newAnalyzer().analyze(CLASS_NAME, methodNode);
String message = assertThrows(AnalyzerException.class, analyze).getMessage();
assertTrue(
message.contains(
"Method owner: expected Ljava/util/ArrayList;, but found Ljava/lang/Object;"));
}
@Test
void testAnalyze_invalidInvokeinterface() {
MethodNode methodNode =
new MethodNodeBuilder()
.insn(Opcodes.ACONST_NULL)
.typeInsn(Opcodes.CHECKCAST, "java/util/List")
.insn(Opcodes.FCONST_0)
.methodInsn(
Opcodes.INVOKEINTERFACE, "java/util/List", "get", "(I)Ljava/lang/Object;", true)
.vreturn()
.build();
Executable analyze = () -> newAnalyzer().analyze(CLASS_NAME, methodNode);
String message = assertThrows(AnalyzerException.class, analyze).getMessage();
assertEquals("Error at instruction 3: Argument 1: expected I, but found F", message);
}
@Test
void testAnalyze_classNotFound() {
Label loopLabel = new Label();
MethodNode methodNode =
new MethodNodeBuilder()
.aload(0)
.astore(1)
.label(loopLabel)
.aconst_null()
.typeInsn(Opcodes.CHECKCAST, "D")
.astore(1)
.go(loopLabel)
.build();
Executable analyze = () -> newAnalyzer().analyze(CLASS_NAME, methodNode);
String message = assertThrows(AnalyzerException.class, analyze).getMessage();
assertTrue(message.contains("Type java.lang.ClassNotFoundException: D not present"));
}
@Test
void testAnalyze_mergeStackFrames() throws AnalyzerException {
Label loopLabel = new Label();
MethodNode methodNode =
new MethodNodeBuilder(1, 4)
.aload(0)
.astore(1)
.aconst_null()
.typeInsn(Opcodes.CHECKCAST, "java/lang/Number")
.astore(2)
.aload(0)
.astore(3)
.label(loopLabel)
.aconst_null()
.typeInsn(Opcodes.CHECKCAST, "java/lang/Number")
.astore(1)
.aload(0)
.astore(2)
.aconst_null()
.typeInsn(Opcodes.CHECKCAST, "java/lang/Integer")
.astore(3)
.go(loopLabel)
.build();
Executable analyze = () -> newAnalyzer().analyze(CLASS_NAME, methodNode);
assertDoesNotThrow(analyze);
assertDoesNotThrow(() -> MethodNodeBuilder.buildClassWithMethod(methodNode).newInstance());
}
/**
* Tests that the precompiled classes can be successfully analyzed with a SimpleVerifier.
*
* @throws AnalyzerException if the test class can't be analyzed.
*/
@ParameterizedTest
@MethodSource(ALL_CLASSES_AND_LATEST_API)
void testAnalyze_simpleVerifier(final PrecompiledClass classParameter, final Api apiParameter) {
ClassNode classNode = new ClassNode();
new ClassReader(classParameter.getBytes()).accept(classNode, 0);
assumeFalse(classNode.methods.isEmpty());
Analyzer<BasicValue> analyzer =
new Analyzer<BasicValue>(
new SimpleVerifier(
Type.getObjectType(classNode.name),
Type.getObjectType(classNode.superName),
(classNode.access & Opcodes.ACC_INTERFACE) != 0));
for (MethodNode methodNode : classNode.methods) {
assertDoesNotThrow(() -> analyzer.analyze(classNode.name, methodNode));
}
}
/**
* Checks that the merge of an ArrayList and an SQLException can be returned as an Iterable. The
* merged type is recomputed by SimpleVerifier as Object (because of limitations of the merging
* algorithm, due to multiple interface inheritance), but the subtyping check is relaxed if the
* super type is an interface type.
*
* @throws AnalyzerException if the test class can't be analyzed.
*/
@Test
void testIsAssignableFrom_interface() throws AnalyzerException {
Label elseLabel = new Label();
Label endIfLabel = new Label();
MethodNode methodNode =
new MethodNodeBuilder(
"(Ljava/util/ArrayList;Ljava/sql/SQLException;)Ljava/lang/Iterable;", 1, 3)
.aload(1)
.ifnonnull(elseLabel)
.aload(1)
.go(endIfLabel)
.label(elseLabel)
.aload(2)
.label(endIfLabel)
.areturn()
.build();
Executable analyze = () -> newAnalyzer().analyze(CLASS_NAME, methodNode);
assertDoesNotThrow(analyze);
assertDoesNotThrow(() -> MethodNodeBuilder.buildClassWithMethod(methodNode).newInstance());
}
private static Analyzer<BasicValue> newAnalyzer() {
return new Analyzer<>(
new SimpleVerifier(Type.getType("LC;"), Type.getType("Ljava/lang/Number;"), false));
}
}
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