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scouter.agent.asm.JDBCConnectionOpenASM Maven / Gradle / Ivy
/*
* Copyright 2015 the original author or authors.
* @https://github.com/scouter-project/scouter
*
* 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 scouter.agent.asm;
import scouter.agent.ClassDesc;
import scouter.agent.Configure;
import scouter.agent.asm.util.AsmUtil;
import scouter.agent.asm.util.HookingSet;
import scouter.agent.netio.data.DataProxy;
import scouter.agent.trace.TraceSQL;
import scouter.org.objectweb.asm.ClassVisitor;
import scouter.org.objectweb.asm.Label;
import scouter.org.objectweb.asm.MethodVisitor;
import scouter.org.objectweb.asm.Opcodes;
import scouter.org.objectweb.asm.Type;
import scouter.org.objectweb.asm.commons.LocalVariablesSorter;
import scouter.util.Pair;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class JDBCConnectionOpenASM implements IASM, Opcodes {
private List target = HookingSet.getHookingMethodSet(Configure.getInstance().hook_connection_open_patterns);
private Map reserved = new HashMap();
public static class JDBCTargetRegister {
public static final List> klassMethod = new ArrayList>();
public static void regist(String klass, String method) {
klassMethod.add(new Pair(klass, method));
}
}
public JDBCConnectionOpenASM() {
AsmUtil.add(reserved, "org/apache/tomcat/dbcp/dbcp/BasicDataSource", "getConnection");
AsmUtil.add(reserved, "org/apache/tomcat/dbcp/dbcp2/BasicDataSource", "getConnection");
AsmUtil.add(reserved, "org/apache/tomcat/jdbc/pool/DataSourceProxy", "getConnection");
AsmUtil.add(reserved, "org/apache/commons/dbcp/BasicDataSource", "getConnection");
AsmUtil.add(reserved, "org/apache/commons/dbcp2/BasicDataSource", "getConnection");
AsmUtil.add(reserved, "com/zaxxer/hikari/HikariDataSource", "getConnection");
for(int i = JDBCTargetRegister.klassMethod.size() - 1; i >= 0; i--) {
AsmUtil.add(reserved, JDBCTargetRegister.klassMethod.get(i).getLeft(), JDBCTargetRegister.klassMethod.get(i).getRight());
}
}
public ClassVisitor transform(ClassVisitor cv, String className, ClassDesc classDesc) {
if (Configure.getInstance()._hook_dbconn_enabled == false) {
return cv;
}
HookingSet mset = reserved.get(className);
if (mset != null)
return new DbcOpenCV(cv, mset, className);
for (int i = 0; i < target.size(); i++) {
mset = target.get(i);
if (mset.classMatch.include(className)) {
return new DbcOpenCV(cv, mset, className);
}
}
return cv;
}
}
class DbcOpenCV extends ClassVisitor implements Opcodes {
public String className;
private HookingSet mset;
public DbcOpenCV(ClassVisitor cv, HookingSet mset, String className) {
super(ASM7, cv);
this.mset = mset;
this.className = className;
}
@Override
public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
MethodVisitor mv = super.visitMethod(access, name, desc, signature, exceptions);
if (mv == null || mset.isA(name, desc) == false) {
return mv;
}
if (AsmUtil.isSpecial(name)) {
return mv;
}
String fullname = className.replace('/', '.') + "#" + name;
int fullname_hash = DataProxy.sendMethodName(fullname);
return new DbcOpenMV(access, desc, mv, fullname, fullname_hash);
}
}
// ///////////////////////////////////////////////////////////////////////////
class DbcOpenMV extends LocalVariablesSorter implements Opcodes {
private static final String TRACE_SQL = TraceSQL.class.getName().replace('.', '/');
private final static String START_METHOD = "dbcOpenStart";
private static final String START_SIGNATURE = "(ILjava/lang/String;Ljava/lang/Object;)Ljava/lang/Object;";
private final static String END_METHOD = "dbcOpenEnd";
private static final String END_SIGNATURE = "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;";
private static final String END_SIGNATURE2 = "(Ljava/lang/Object;Ljava/lang/Throwable;)V";
private Label startFinally = new Label();
public DbcOpenMV(int access, String desc, MethodVisitor mv, String fullname, int fullname_hash) {
super(Opcodes.ASM7, access, desc, mv);
this.fullname = fullname;
this.fullname_hash = fullname_hash;
this.isStatic = (access & ACC_STATIC) != 0;
}
private int fullname_hash;
private String fullname;
private int statIdx;
private boolean isStatic = false;
@Override
public void visitCode() {
AsmUtil.PUSH(mv, fullname_hash);
mv.visitLdcInsn(fullname);
if (isStatic) {
AsmUtil.PUSHNULL(mv);
} else {
mv.visitVarInsn(Opcodes.ALOAD, 0);
}
mv.visitMethodInsn(Opcodes.INVOKESTATIC, TRACE_SQL, START_METHOD, START_SIGNATURE, false);
statIdx = newLocal(Type.getType(Object.class));
mv.visitVarInsn(Opcodes.ASTORE, statIdx);
mv.visitLabel(startFinally);
mv.visitCode();
}
@Override
public void visitInsn(int opcode) {
if ((opcode >= IRETURN && opcode <= RETURN)) {
mv.visitVarInsn(Opcodes.ALOAD, statIdx);
mv.visitMethodInsn(Opcodes.INVOKESTATIC, TRACE_SQL, END_METHOD, END_SIGNATURE, false);
}
mv.visitInsn(opcode);
}
@Override
public void visitMaxs(int maxStack, int maxLocals) {
Label endFinally = new Label();
mv.visitTryCatchBlock(startFinally, endFinally, endFinally, null);
mv.visitLabel(endFinally);
mv.visitInsn(DUP);
int errIdx = newLocal(Type.getType(Throwable.class));
mv.visitVarInsn(Opcodes.ASTORE, errIdx);
mv.visitVarInsn(Opcodes.ALOAD, statIdx);
mv.visitVarInsn(Opcodes.ALOAD, errIdx);
mv.visitMethodInsn(Opcodes.INVOKESTATIC, TRACE_SQL, END_METHOD, END_SIGNATURE2, false);
mv.visitInsn(ATHROW);
mv.visitMaxs(maxStack + 8, maxLocals + 2);
}
}
