[Security Manager Replacement] Native Java Agent (dynamic code rewriting, must be low overhead)

Signed-off-by: Andriy Redko <[email protected]>

Author: reta

buildSrc/build.gradle

@@ -171,8 +171,8 @@ if (project != rootProject) {
 
   allprojects {
     java {
-        targetCompatibility = JavaVersion.VERSION_11
-        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_17
+        sourceCompatibility = JavaVersion.VERSION_17
     }
   }
 

buildSrc/src/main/resources/minimumRuntimeVersion

@@ -1 +1 @@
-11
+17

libs/agent-sm/agent/build.gradle

@@ -0,0 +1,44 @@
+
+apply plugin: 'opensearch.build'
+apply plugin: 'opensearch.publish'
+
+base {
+  archivesName = 'opensearch-agent'
+}
+
+configurations {
+  bootstrapConfiguration.extendsFrom(implementation)
+}
+
+dependencies {
+  implementation project(":libs:agent-sm:bootstrap")
+  implementation "net.bytebuddy:byte-buddy:1.15.10"
+  compileOnly "com.google.code.findbugs:jsr305:3.0.2"
+}
+
+jar {
+  manifest {
+    attributes(
+      "Can-Redefine-Classes": "true",
+      "Can-Retransform-Classes": "true",
+      "Agent-Class": "org.opensearch.javaagent.Agent",
+      "Premain-Class": "org.opensearch.javaagent.Agent",
+      "Boot-Class-Path": 'byte-buddy-1.15.10.jar opensearch-agent-bootstrap-3.0.0-SNAPSHOT.jar'
+    )
+  }
+}
+
+compileJava {
+  options.compilerArgs -= '-Werror'
+}
+
+test.enabled = false
+
+tasks.named('forbiddenApisMain').configure {
+  replaceSignatureFiles 'jdk-signatures'
+}
+
+copy {
+  from configurations.runtimeClasspath
+  into "$buildDir/distributions"
+}

libs/agent-sm/agent/licenses/byte-buddy-1.15.10.jar.sha1

@@ -0,0 +1 @@
+635c873fadd853c084f84fdc3cbd58c5dd8537f9

libs/agent-sm/agent/licenses/byte-buddy-LICENSE.txt

@@ -0,0 +1,180 @@
+This product bundles ASM 9.7.1, which is available under a "3-clause BSD"
+license. For details, see licenses/ASM. For more information visit ${asm.url}.
+
+Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
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+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
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+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
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+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
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+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
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+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
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+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
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+      (d) If the Work includes a "NOTICE" text file as part of its
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+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
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+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
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+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+

libs/agent-sm/agent/licenses/byte-buddy-NOTICE.txt

@@ -0,0 +1,13 @@
+Copyright 2014 - Present Rafael Winterhalter
+
+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.

libs/agent-sm/agent/src/main/java/org/opensearch/javaagent/Agent.java

@@ -0,0 +1,63 @@
+package org.opensearch.javaagent;
+
+import org.opensearch.javaagent.bootstrap.AgentPolicy;
+
+import java.lang.instrument.Instrumentation;
+import java.nio.channels.SocketChannel;
+import java.util.Map;
+
+import net.bytebuddy.ByteBuddy;
+import net.bytebuddy.agent.builder.AgentBuilder;
+import net.bytebuddy.asm.Advice;
+import net.bytebuddy.description.type.TypeDescription;
+import net.bytebuddy.dynamic.ClassFileLocator;
+import net.bytebuddy.dynamic.loading.ClassInjector;
+import net.bytebuddy.implementation.Implementation;
+import net.bytebuddy.matcher.ElementMatcher.Junction;
+import net.bytebuddy.matcher.ElementMatchers;
+
+public class Agent {
+
+    public static void premain(String agentArguments, Instrumentation instrumentation) throws Exception {
+        initAgent(instrumentation);
+    }
+
+    public static void agentmain(String agentArguments, Instrumentation instrumentation) throws Exception {
+        initAgent(instrumentation);
+    }
+
+    private static AgentBuilder createAgentBuilder(Instrumentation inst) throws Exception {
+        final Junction<TypeDescription> systemType = ElementMatchers.isSubTypeOf(SocketChannel.class);
+
+        final AgentBuilder.Transformer transformer = (b, typeDescription, classLoader, module, pd) -> b.visit(
+            Advice.to(SocketChannelInterceptor.class)
+                .on(ElementMatchers.named("connect").and(ElementMatchers.not(ElementMatchers.isAbstract())))
+        );
+
+        ClassInjector.UsingUnsafe.ofBootLoader()
+            .inject(
+                Map.of(
+                    new TypeDescription.ForLoadedType(StackCallerChainExtractor.class),
+                    ClassFileLocator.ForClassLoader.read(StackCallerChainExtractor.class),
+                    new TypeDescription.ForLoadedType(AgentPolicy.class),
+                    ClassFileLocator.ForClassLoader.read(AgentPolicy.class)
+                )
+            );
+
+        final ByteBuddy byteBuddy = new ByteBuddy().with(Implementation.Context.Disabled.Factory.INSTANCE);
+        final AgentBuilder agentBuilder = new AgentBuilder.Default(byteBuddy).with(AgentBuilder.InitializationStrategy.NoOp.INSTANCE)
+            .with(AgentBuilder.RedefinitionStrategy.REDEFINITION)
+            .with(AgentBuilder.RedefinitionStrategy.Listener.StreamWriting.toSystemError())
+            .with(AgentBuilder.TypeStrategy.Default.REDEFINE)
+            .ignore(ElementMatchers.none())
+            .type(systemType)
+            .transform(transformer);
+
+        return agentBuilder;
+    }
+
+    private static void initAgent(Instrumentation instrumentation) throws Exception {
+        AgentBuilder agentBuilder = createAgentBuilder(instrumentation);
+        agentBuilder.installOn(instrumentation);
+    }
+}

libs/agent-sm/agent/src/main/java/org/opensearch/javaagent/SocketChannelInterceptor.java

@@ -0,0 +1,34 @@
+package org.opensearch.javaagent;
+
+import org.opensearch.javaagent.bootstrap.AgentPolicy;
+
+import java.lang.StackWalker.Option;
+import java.lang.reflect.Method;
+import java.net.InetSocketAddress;
+import java.net.SocketPermission;
+import java.security.Policy;
+import java.security.ProtectionDomain;
+import java.util.List;
+
+import net.bytebuddy.asm.Advice;
+import net.bytebuddy.asm.Advice.Origin;
+
+public class SocketChannelInterceptor {
+    @Advice.OnMethodEnter
+    public static void intercept(@Advice.AllArguments Object[] args, @Origin Method method) throws Exception {
+        final Policy policy = AgentPolicy.getPolicy();
+        System.out.println("Policy: " + policy);
+
+        final StackWalker walker = StackWalker.getInstance(Option.RETAIN_CLASS_REFERENCE);
+
+        final Class<?> caller = walker.getCallerClass();
+        final List<ProtectionDomain> callers = walker.walk(new StackCallerChainExtractor());
+
+        final InetSocketAddress address = (InetSocketAddress) args[0];
+        for (final ProtectionDomain domain : callers) {
+            if (!policy.implies(domain, new SocketPermission(address.getHostName() + ":" + address.getPort(), "connect,resolve"))) {
+                throw new SecurityException("Denied access to " + address);
+            }
+        }
+    }
+}

libs/agent-sm/agent/src/main/java/org/opensearch/javaagent/StackCallerChainExtractor.java

@@ -0,0 +1,15 @@
+package org.opensearch.javaagent;
+
+import java.lang.StackWalker.StackFrame;
+import java.security.ProtectionDomain;
+import java.util.List;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+public final class StackCallerChainExtractor implements Function<Stream<StackFrame>, List<ProtectionDomain>> {
+    @Override
+    public List<ProtectionDomain> apply(Stream<StackFrame> frames) {
+        return frames.map(StackFrame::getDeclaringClass).map(Class::getProtectionDomain).distinct().collect(Collectors.toList());
+    }
+}

libs/agent-sm/bootstrap/build.gradle

@@ -0,0 +1,22 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ *
+ * Modifications Copyright OpenSearch Contributors. See
+ * GitHub history for details.
+ */
+
+// This file is intentionally blank. All configuration of the
+// distribution is done in the parent project.
+
+// See please https://docs.gradle.org/8.5/userguide/upgrading_version_8.html#deprecated_missing_project_directory
+
+apply plugin: 'opensearch.build'
+apply plugin: 'opensearch.publish'
+
+base {
+  archivesName = 'opensearch-agent-bootstrap'
+}