| /* |
| * 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 dexfuzz.rawdex; |
| |
| import dexfuzz.Log; |
| |
| import java.io.IOException; |
| import java.nio.charset.StandardCharsets; |
| |
| public class StringDataItem implements RawDexObject { |
| private int size; |
| private String data; |
| private byte[] dataAsBytes; |
| private boolean writeRawBytes; |
| |
| @Override |
| public void read(DexRandomAccessFile file) throws IOException { |
| file.getOffsetTracker().getNewOffsettable(file, this); |
| size = file.readUleb128(); |
| if (size != 0) { |
| dataAsBytes = file.readDexUtf(size); |
| data = new String(dataAsBytes, StandardCharsets.US_ASCII); |
| if (size != data.length()) { |
| Log.warn("Don't have full support for decoding MUTF-8 yet, DEX file " |
| + "may be incorrectly mutated. Avoid using this test case for now."); |
| writeRawBytes = true; |
| } |
| } else { |
| // Read past the null byte. |
| file.readByte(); |
| } |
| } |
| |
| @Override |
| public void write(DexRandomAccessFile file) throws IOException { |
| file.getOffsetTracker().updatePositionOfNextOffsettable(file); |
| file.writeUleb128(size); |
| if (size > 0) { |
| if (writeRawBytes) { |
| file.writeDexUtf(dataAsBytes); |
| } else { |
| file.writeDexUtf(data.getBytes(StandardCharsets.US_ASCII)); |
| } |
| } else { |
| // Write out the null byte. |
| file.writeByte(0); |
| } |
| } |
| |
| @Override |
| public void incrementIndex(IndexUpdateKind kind, int insertedIdx) { |
| // Do nothing. |
| } |
| |
| public void setSize(int size) { |
| this.size = size; |
| } |
| |
| public int getSize() { |
| return size; |
| } |
| |
| public void setString(String data) { |
| this.data = data; |
| } |
| |
| public String getString() { |
| if (writeRawBytes) { |
| Log.warn("Reading a string that hasn't been properly decoded! Returning empty string."); |
| return ""; |
| } |
| return data; |
| } |
| } |