content: /*
   *  Copyright (C) 2010 Ryszard Wiśniewski <brut.alll@gmail.com>
   *  Copyright (C) 2010 Connor Tumbleson <connor.tumbleson@gmail.com>
   *
   *  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
   *
   *       https://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 brut.androlib.src;
  
  import brut.androlib.AndrolibException;
  import org.jf.baksmali.Baksmali;
  import org.jf.baksmali.BaksmaliOptions;
  import org.jf.dexlib2.DexFileFactory;
  import org.jf.dexlib2.Opcodes;
  import org.jf.dexlib2.dexbacked.DexBackedDexFile;
  import org.jf.dexlib2.dexbacked.DexBackedOdexFile;
  import org.jf.dexlib2.analysis.InlineMethodResolver;
  import org.jf.dexlib2.iface.DexFile;
  import org.jf.dexlib2.iface.MultiDexContainer;
  
  import java.io.File;
  import java.io.IOException;
  
  public class SmaliDecoder {
  
      public static DexFile decode(File apkFile, File outDir, String dexName, boolean bakDeb, int apiLevel)
              throws AndrolibException {
          return new SmaliDecoder(apkFile, outDir, dexName, bakDeb, apiLevel).decode();
      }
  
      private SmaliDecoder(File apkFile, File outDir, String dexName, boolean bakDeb, int apiLevel) {
          mApkFile = apkFile;
          mOutDir = outDir;
          mDexFile = dexName;
          mBakDeb = bakDeb;
          mApiLevel = apiLevel;
      }
  
      private DexFile decode() throws AndrolibException {
          try {
              final BaksmaliOptions options = new BaksmaliOptions();
  
              // options
              options.deodex = false;
              options.implicitReferences = false;
              options.parameterRegisters = true;
              options.localsDirective = true;
              options.sequentialLabels = true;
              options.debugInfo = mBakDeb;
              options.codeOffsets = false;
              options.accessorComments = false;
              options.registerInfo = 0;
              options.inlineResolver = null;
  
              // set jobs automatically
              int jobs = Runtime.getRuntime().availableProcessors();
              if (jobs > 6) {
                  jobs = 6;
              }
  
              // create the container
              MultiDexContainer<? extends DexBackedDexFile> container =
                      DexFileFactory.loadDexContainer(mApkFile, mApiLevel > 0 ? Opcodes.forApi(mApiLevel) : null);
              MultiDexContainer.DexEntry<? extends DexBackedDexFile> dexEntry;
              DexBackedDexFile dexFile;
  
              // If we have 1 item, ignore the passed file. Pull the DexFile we need.
              if (container.getDexEntryNames().size() == 1) {
                  dexEntry = container.getEntry(container.getDexEntryNames().get(0));
              } else {
                  dexEntry = container.getEntry(mDexFile);
              }
  
              // Double check the passed param exists
              if (dexEntry == null) {
                  dexEntry = container.getEntry(container.getDexEntryNames().get(0));
              }
  
              assert dexEntry != null;
              dexFile = dexEntry.getDexFile();
  
              if (dexFile.supportsOptimizedOpcodes()) {
                  throw new AndrolibException("Warning: You are disassembling an odex file without deodexing it.");
              }
  
              if (dexFile instanceof DexBackedOdexFile) {
                  options.inlineResolver =
                          InlineMethodResolver.createInlineMethodResolver(((DexBackedOdexFile)dexFile).getOdexVersion());
              }
  
              Baksmali.disassembleDexFile(dexFile, mOutDir, jobs, options);
  
              return dexFile;
          } catch (IOException ex) {
              throw new AndrolibException(ex);
          }
      }
  
      private final File mApkFile;
      private final File mOutDir;
      private final String mDexFile;
      private final boolean mBakDeb;
      private final int mApiLevel;
  }
  