| /* |
| * Copyright 2013, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * 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. |
| * * Neither the name of Google Inc. 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.jf.dexlib2.dexbacked; |
| |
| import com.google.common.io.ByteStreams; |
| import org.jf.dexlib2.Opcodes; |
| import org.jf.dexlib2.dexbacked.raw.OdexHeaderItem; |
| import org.jf.dexlib2.dexbacked.util.VariableSizeList; |
| |
| import javax.annotation.Nonnull; |
| import java.io.EOFException; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.UnsupportedEncodingException; |
| import java.util.List; |
| |
| public class DexBackedOdexFile extends DexBackedDexFile { |
| private static final int DEPENDENCY_COUNT_OFFSET = 12; |
| private static final int DEPENDENCY_START_OFFSET = 16; |
| |
| private final byte[] odexBuf; |
| |
| |
| public DexBackedOdexFile(@Nonnull Opcodes opcodes, @Nonnull byte[] odexBuf, byte[] dexBuf) { |
| super(opcodes, dexBuf); |
| |
| this.odexBuf = odexBuf; |
| } |
| |
| @Override public boolean isOdexFile() { |
| return true; |
| } |
| |
| @Override public boolean hasOdexOpcodes() { |
| return true; |
| } |
| |
| public List<String> getDependencies() { |
| final int dexOffset = OdexHeaderItem.getDexOffset(odexBuf); |
| final int dependencyOffset = OdexHeaderItem.getDependenciesOffset(odexBuf) - dexOffset; |
| |
| BaseDexBuffer buf = new BaseDexBuffer(this.buf); |
| int dependencyCount = buf.readInt(dependencyOffset + DEPENDENCY_COUNT_OFFSET); |
| |
| return new VariableSizeList<String>(this, dependencyOffset + DEPENDENCY_START_OFFSET, dependencyCount) { |
| @Override protected String readNextItem(@Nonnull DexReader reader, int index) { |
| int length = reader.readInt(); |
| int offset = reader.getOffset(); |
| reader.moveRelative(length + 20); |
| try { |
| return new String(DexBackedOdexFile.this.buf, offset, length-1, "US-ASCII"); |
| } catch (UnsupportedEncodingException ex) { |
| throw new RuntimeException(ex); |
| } |
| } |
| }; |
| } |
| |
| public static DexBackedOdexFile fromInputStream(@Nonnull Opcodes opcodes, @Nonnull InputStream is) |
| throws IOException { |
| if (!is.markSupported()) { |
| throw new IllegalArgumentException("InputStream must support mark"); |
| } |
| is.mark(8); |
| byte[] partialHeader = new byte[8]; |
| try { |
| ByteStreams.readFully(is, partialHeader); |
| } catch (EOFException ex) { |
| throw new NotADexFile("File is too short"); |
| } finally { |
| is.reset(); |
| } |
| |
| verifyMagic(partialHeader); |
| |
| is.reset(); |
| byte[] odexBuf = new byte[OdexHeaderItem.ITEM_SIZE]; |
| ByteStreams.readFully(is, odexBuf); |
| int dexOffset = OdexHeaderItem.getDexOffset(odexBuf); |
| if (dexOffset > OdexHeaderItem.ITEM_SIZE) { |
| ByteStreams.skipFully(is, dexOffset - OdexHeaderItem.ITEM_SIZE); |
| } |
| |
| byte[] dexBuf = ByteStreams.toByteArray(is); |
| |
| return new DexBackedOdexFile(opcodes, odexBuf, dexBuf); |
| } |
| |
| private static void verifyMagic(byte[] buf) { |
| if (!OdexHeaderItem.verifyMagic(buf)) { |
| StringBuilder sb = new StringBuilder("Invalid magic value:"); |
| for (int i=0; i<8; i++) { |
| sb.append(String.format(" %02x", buf[i])); |
| } |
| throw new NotAnOdexFile(sb.toString()); |
| } |
| } |
| |
| public int getOdexVersion() { |
| return OdexHeaderItem.getVersion(odexBuf); |
| } |
| |
| public static class NotAnOdexFile extends RuntimeException { |
| public NotAnOdexFile() { |
| } |
| |
| public NotAnOdexFile(Throwable cause) { |
| super(cause); |
| } |
| |
| public NotAnOdexFile(String message) { |
| super(message); |
| } |
| |
| public NotAnOdexFile(String message, Throwable cause) { |
| super(message, cause); |
| } |
| } |
| } |