1 files changed, 0 insertions, 348 deletions
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/plugins/JarScanner.java b/gerrit-server/src/main/java/com/google/gerrit/server/plugins/JarScanner.java
deleted file mode 100644
index 863ef3f197..0000000000
--- a/gerrit-server/src/main/java/com/google/gerrit/server/plugins/JarScanner.java
+++ /dev/null
@@ -1,348 +0,0 @@
-// Copyright (C) 2014 The Android Open Source Project
-//
-// 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.google.gerrit.server.plugins;
-
-import static com.google.common.base.MoreObjects.firstNonNull;
-import static com.google.common.collect.Iterables.transform;
-
-import com.google.common.base.Strings;
-import com.google.common.collect.ImmutableMap;
-import com.google.common.collect.ListMultimap;
-import com.google.common.collect.Lists;
-import com.google.common.collect.Maps;
-import com.google.common.collect.MultimapBuilder;
-import java.io.IOException;
-import java.io.InputStream;
-import java.lang.annotation.Annotation;
-import java.nio.file.Path;
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.Enumeration;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Map;
-import java.util.Optional;
-import java.util.Set;
-import java.util.jar.Attributes;
-import java.util.jar.JarEntry;
-import java.util.jar.JarFile;
-import java.util.jar.Manifest;
-import org.eclipse.jgit.util.IO;
-import org.objectweb.asm.AnnotationVisitor;
-import org.objectweb.asm.Attribute;
-import org.objectweb.asm.ClassReader;
-import org.objectweb.asm.ClassVisitor;
-import org.objectweb.asm.FieldVisitor;
-import org.objectweb.asm.MethodVisitor;
-import org.objectweb.asm.Opcodes;
-import org.objectweb.asm.Type;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-public class JarScanner implements PluginContentScanner, AutoCloseable {
-  private static final Logger log = LoggerFactory.getLogger(JarScanner.class);
-  private static final int SKIP_ALL =
-      ClassReader.SKIP_CODE | ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES;
-  private final JarFile jarFile;
-
-  public JarScanner(Path src) throws IOException {
-    this.jarFile = new JarFile(src.toFile());
-  }
-
-  @Override
-  public Map<Class<? extends Annotation>, Iterable<ExtensionMetaData>> scan(
-      String pluginName, Iterable<Class<? extends Annotation>> annotations)
-      throws InvalidPluginException {
-    Set<String> descriptors = new HashSet<>();
-    ListMultimap<String, JarScanner.ClassData> rawMap =
-        MultimapBuilder.hashKeys().arrayListValues().build();
-    Map<Class<? extends Annotation>, String> classObjToClassDescr = new HashMap<>();
-
-    for (Class<? extends Annotation> annotation : annotations) {
-      String descriptor = Type.getType(annotation).getDescriptor();
-      descriptors.add(descriptor);
-      classObjToClassDescr.put(annotation, descriptor);
-    }
-
-    Enumeration<JarEntry> e = jarFile.entries();
-    while (e.hasMoreElements()) {
-      JarEntry entry = e.nextElement();
-      if (skip(entry)) {
-        continue;
-      }
-
-      ClassData def = new ClassData(descriptors);
-      try {
-        new ClassReader(read(jarFile, entry)).accept(def, SKIP_ALL);
-      } catch (IOException err) {
-        throw new InvalidPluginException("Cannot auto-register", err);
-      } catch (RuntimeException err) {
-        log.warn(
-            "Plugin {} has invalid class file {} inside of {}",
-            pluginName,
-            entry.getName(),
-            jarFile.getName(),
-            err);
-        continue;
-      }
-
-      if (!Strings.isNullOrEmpty(def.annotationName)) {
-        if (def.isConcrete()) {
-          rawMap.put(def.annotationName, def);
-        } else {
-          log.warn(
-              "Plugin {} tries to @{}(\"{}\") abstract class {}",
-              pluginName,
-              def.annotationName,
-              def.annotationValue,
-              def.className);
-        }
-      }
-    }
-
-    ImmutableMap.Builder<Class<? extends Annotation>, Iterable<ExtensionMetaData>> result =
-        ImmutableMap.builder();
-
-    for (Class<? extends Annotation> annotoation : annotations) {
-      String descr = classObjToClassDescr.get(annotoation);
-      Collection<ClassData> discoverdData = rawMap.get(descr);
-      Collection<ClassData> values = firstNonNull(discoverdData, Collections.<ClassData>emptySet());
-
-      result.put(
-          annotoation,
-          transform(values, cd -> new ExtensionMetaData(cd.className, cd.annotationValue)));
-    }
-
-    return result.build();
-  }
-
-  public List<String> findSubClassesOf(Class<?> superClass) throws IOException {
-    return findSubClassesOf(superClass.getName());
-  }
-
-  @Override
-  public void close() throws IOException {
-    jarFile.close();
-  }
-
-  private List<String> findSubClassesOf(String superClass) throws IOException {
-    String name = superClass.replace('.', '/');
-
-    List<String> classes = new ArrayList<>();
-    Enumeration<JarEntry> e = jarFile.entries();
-    while (e.hasMoreElements()) {
-      JarEntry entry = e.nextElement();
-      if (skip(entry)) {
-        continue;
-      }
-
-      ClassData def = new ClassData(Collections.<String>emptySet());
-      try {
-        new ClassReader(read(jarFile, entry)).accept(def, SKIP_ALL);
-      } catch (RuntimeException err) {
-        log.warn("Jar {} has invalid class file {}", jarFile.getName(), entry.getName(), err);
-        continue;
-      }
-
-      if (name.equals(def.superName)) {
-        classes.addAll(findSubClassesOf(def.className));
-        if (def.isConcrete()) {
-          classes.add(def.className);
-        }
-      }
-    }
-
-    return classes;
-  }
-
-  private static boolean skip(JarEntry entry) {
-    if (!entry.getName().endsWith(".class")) {
-      return true; // Avoid non-class resources.
-    }
-    if (entry.getSize() <= 0) {
-      return true; // Directories have 0 size.
-    }
-    if (entry.getSize() >= 1024 * 1024) {
-      return true; // Do not scan huge class files.
-    }
-    return false;
-  }
-
-  private static byte[] read(JarFile jarFile, JarEntry entry) throws IOException {
-    byte[] data = new byte[(int) entry.getSize()];
-    try (InputStream in = jarFile.getInputStream(entry)) {
-      IO.readFully(in, data, 0, data.length);
-    }
-    return data;
-  }
-
-  public static class ClassData extends ClassVisitor {
-    int access;
-    String className;
-    String superName;
-    String annotationName;
-    String annotationValue;
-    String[] interfaces;
-    Collection<String> exports;
-
-    private ClassData(Collection<String> exports) {
-      super(Opcodes.ASM5);
-      this.exports = exports;
-    }
-
-    boolean isConcrete() {
-      return (access & Opcodes.ACC_ABSTRACT) == 0 && (access & Opcodes.ACC_INTERFACE) == 0;
-    }
-
-    @Override
-    public void visit(
-        int version,
-        int access,
-        String name,
-        String signature,
-        String superName,
-        String[] interfaces) {
-      this.className = Type.getObjectType(name).getClassName();
-      this.access = access;
-      this.superName = superName;
-    }
-
-    @Override
-    public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
-      if (!visible) {
-        return null;
-      }
-      Optional<String> found = exports.stream().filter(x -> x.equals(desc)).findAny();
-      if (found.isPresent()) {
-        annotationName = desc;
-        return new AbstractAnnotationVisitor() {
-          @Override
-          public void visit(String name, Object value) {
-            annotationValue = (String) value;
-          }
-        };
-      }
-      return null;
-    }
-
-    @Override
-    public void visitSource(String arg0, String arg1) {}
-
-    @Override
-    public void visitOuterClass(String arg0, String arg1, String arg2) {}
-
-    @Override
-    public MethodVisitor visitMethod(
-        int arg0, String arg1, String arg2, String arg3, String[] arg4) {
-      return null;
-    }
-
-    @Override
-    public void visitInnerClass(String arg0, String arg1, String arg2, int arg3) {}
-
-    @Override
-    public FieldVisitor visitField(int arg0, String arg1, String arg2, String arg3, Object arg4) {
-      return null;
-    }
-
-    @Override
-    public void visitEnd() {}
-
-    @Override
-    public void visitAttribute(Attribute arg0) {}
-  }
-
-  private abstract static class AbstractAnnotationVisitor extends AnnotationVisitor {
-    AbstractAnnotationVisitor() {
-      super(Opcodes.ASM5);
-    }
-
-    @Override
-    public AnnotationVisitor visitAnnotation(String arg0, String arg1) {
-      return null;
-    }
-
-    @Override
-    public AnnotationVisitor visitArray(String arg0) {
-      return null;
-    }
-
-    @Override
-    public void visitEnum(String arg0, String arg1, String arg2) {}
-
-    @Override
-    public void visitEnd() {}
-  }
-
-  @Override
-  public Optional<PluginEntry> getEntry(String resourcePath) throws IOException {
-    JarEntry jarEntry = jarFile.getJarEntry(resourcePath);
-    if (jarEntry == null || jarEntry.getSize() == 0) {
-      return Optional.empty();
-    }
-
-    return Optional.of(resourceOf(jarEntry));
-  }
-
-  @Override
-  public Enumeration<PluginEntry> entries() {
-    return Collections.enumeration(
-        Lists.transform(
-            Collections.list(jarFile.entries()),
-            jarEntry -> {
-              try {
-                return resourceOf(jarEntry);
-              } catch (IOException e) {
-                throw new IllegalArgumentException(
-                    "Cannot convert jar entry " + jarEntry + " to a resource", e);
-              }
-            }));
-  }
-
-  @Override
-  public InputStream getInputStream(PluginEntry entry) throws IOException {
-    return jarFile.getInputStream(jarFile.getEntry(entry.getName()));
-  }
-
-  @Override
-  public Manifest getManifest() throws IOException {
-    return jarFile.getManifest();
-  }
-
-  private PluginEntry resourceOf(JarEntry jarEntry) throws IOException {
-    return new PluginEntry(
-        jarEntry.getName(),
-        jarEntry.getTime(),
-        Optional.of(jarEntry.getSize()),
-        attributesOf(jarEntry));
-  }
-
-  private Map<Object, String> attributesOf(JarEntry jarEntry) throws IOException {
-    Attributes attributes = jarEntry.getAttributes();
-    if (attributes == null) {
-      return Collections.emptyMap();
-    }
-    return Maps.transformEntries(
-        attributes,
-        new Maps.EntryTransformer<Object, Object, String>() {
-          @Override
-          public String transformEntry(Object key, Object value) {
-            return (String) value;
-          }
-        });
-  }
-}