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package com.taobao.common.dexpatcher.struct;
import com.taobao.dex.SizeOf;
import com.taobao.dex.io.DexDataBuffer;
import com.taobao.dex.util.CompareUtils;
import com.taobao.dex.util.FileUtils;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.nio.ByteBuffer;
import java.util.Arrays;
public final class DexPatchFile {
public static final byte[] MAGIC = {0x44, 0x58, 0x44, 0x49, 0x46, 0x46}; // DXDIFF
public static final short CURRENT_VERSION = 0x0002;
private final DexDataBuffer buffer;
private short version;
private int patchedDexSize;
private int firstChunkOffset;
private int patchedStringIdSectionOffset;
private int patchedTypeIdSectionOffset;
private int patchedProtoIdSectionOffset;
private int patchedFieldIdSectionOffset;
private int patchedMethodIdSectionOffset;
private int patchedClassDefSectionOffset;
private int patchedMapListSectionOffset;
private int patchedTypeListSectionOffset;
private int patchedAnnotationSetRefListSectionOffset;
private int patchedAnnotationSetSectionOffset;
private int patchedClassDataSectionOffset;
private int patchedCodeSectionOffset;
private int patchedStringDataSectionOffset;
private int patchedDebugInfoSectionOffset;
private int patchedAnnotationSectionOffset;
private int patchedEncodedArraySectionOffset;
private int patchedAnnotationsDirectorySectionOffset;
private byte[] oldDexSignature;
public DexPatchFile(File file) throws IOException {
this.buffer = new DexDataBuffer(ByteBuffer.wrap(FileUtils.readFile(file)));
init();
}
public DexPatchFile(InputStream is) throws IOException {
this.buffer = new DexDataBuffer(ByteBuffer.wrap(FileUtils.readStream(is)));
init();
}
private void init() {
byte[] magic = this.buffer.readByteArray(MAGIC.length);
if (CompareUtils.uArrCompare(magic, MAGIC) != 0) {
throw new IllegalStateException("bad dex patch file magic: " + Arrays.toString(magic));
}
this.version = this.buffer.readShort();
if (CompareUtils.uCompare(this.version, CURRENT_VERSION) != 0) {
throw new IllegalStateException("bad dex patch file version: " + this.version + ", expected: " + CURRENT_VERSION);
}
this.patchedDexSize = this.buffer.readInt();
this.firstChunkOffset = this.buffer.readInt();
this.patchedStringIdSectionOffset = this.buffer.readInt();
this.patchedTypeIdSectionOffset = this.buffer.readInt();
this.patchedProtoIdSectionOffset = this.buffer.readInt();
this.patchedFieldIdSectionOffset = this.buffer.readInt();
this.patchedMethodIdSectionOffset = this.buffer.readInt();
this.patchedClassDefSectionOffset = this.buffer.readInt();
this.patchedMapListSectionOffset = this.buffer.readInt();
this.patchedTypeListSectionOffset = this.buffer.readInt();
this.patchedAnnotationSetRefListSectionOffset = this.buffer.readInt();
this.patchedAnnotationSetSectionOffset = this.buffer.readInt();
this.patchedClassDataSectionOffset = this.buffer.readInt();
this.patchedCodeSectionOffset = this.buffer.readInt();
this.patchedStringDataSectionOffset = this.buffer.readInt();
this.patchedDebugInfoSectionOffset = this.buffer.readInt();
this.patchedAnnotationSectionOffset = this.buffer.readInt();
this.patchedEncodedArraySectionOffset = this.buffer.readInt();
this.patchedAnnotationsDirectorySectionOffset = this.buffer.readInt();
this.oldDexSignature = this.buffer.readByteArray(SizeOf.SIGNATURE);
this.buffer.position(firstChunkOffset);
}
public short getVersion() {
return version;
}
public byte[] getOldDexSignature() {
return this.oldDexSignature;
}
public int getPatchedDexSize() {
return patchedDexSize;
}
public int getPatchedStringIdSectionOffset() {
return patchedStringIdSectionOffset;
}
public int getPatchedTypeIdSectionOffset() {
return patchedTypeIdSectionOffset;
}
public int getPatchedProtoIdSectionOffset() {
return patchedProtoIdSectionOffset;
}
public int getPatchedFieldIdSectionOffset() {
return patchedFieldIdSectionOffset;
}
public int getPatchedMethodIdSectionOffset() {
return patchedMethodIdSectionOffset;
}
public int getPatchedClassDefSectionOffset() {
return patchedClassDefSectionOffset;
}
public int getPatchedMapListSectionOffset() {
return patchedMapListSectionOffset;
}
public int getPatchedTypeListSectionOffset() {
return patchedTypeListSectionOffset;
}
public int getPatchedAnnotationSetRefListSectionOffset() {
return patchedAnnotationSetRefListSectionOffset;
}
public int getPatchedAnnotationSetSectionOffset() {
return patchedAnnotationSetSectionOffset;
}
public int getPatchedClassDataSectionOffset() {
return patchedClassDataSectionOffset;
}
public int getPatchedCodeSectionOffset() {
return patchedCodeSectionOffset;
}
public int getPatchedStringDataSectionOffset() {
return patchedStringDataSectionOffset;
}
public int getPatchedDebugInfoSectionOffset() {
return patchedDebugInfoSectionOffset;
}
public int getPatchedAnnotationSectionOffset() {
return patchedAnnotationSectionOffset;
}
public int getPatchedEncodedArraySectionOffset() {
return patchedEncodedArraySectionOffset;
}
public int getPatchedAnnotationsDirectorySectionOffset() {
return patchedAnnotationsDirectorySectionOffset;
}
public DexDataBuffer getBuffer() {
return buffer;
}
}