How to use

org.jf.dexlib2.dexbacked.OatFile$InvalidOatFileException

constructor

  @Nonnull
  public String getString(int index) {
    if (index >= size) {
      throw new InvalidOatFileException("String index is out of bounds");
    }
    int start = offset + index;
    int end = start;
    while (buf[end] != 0) {
      end++;
      if (end >= offset + size) {
        throw new InvalidOatFileException("String extends past end of string table");
      }
    }
    return new String(buf, start, end-start, Charset.forName("US-ASCII"));
  }
}

  @Nonnull
  public String getString(int index) {
    if (index >= size) {
      throw new InvalidOatFileException("String index is out of bounds");
    }
    int start = offset + index;
    int end = start;
    while (buf[end] != 0) {
      end++;
      if (end >= offset + size) {
        throw new InvalidOatFileException("String extends past end of string table");
      }
    }
    return new String(buf, start, end-start, Charset.forName("US-ASCII"));
  }
}

@Nullable
public String getKeyValue(@Nonnull String key) {
  int size = getKeyValueStoreSize();
  int offset = headerOffset + keyValueStoreOffset;
  int endOffset = offset + size;
  while (offset < endOffset) {
    int keyStartOffset = offset;
    while (offset < endOffset && buf[offset] != '\0') {
      offset++;
    }
    if (offset >= endOffset) {
      throw new InvalidOatFileException("Oat file contains truncated key value store");
    }
    int keyEndOffset = offset;
    String k = new String(buf, keyStartOffset, keyEndOffset - keyStartOffset);
    if (k.equals(key)) {
      int valueStartOffset = ++offset;
      while (offset < endOffset && buf[offset] != '\0') {
        offset++;
      }
      if (offset >= endOffset) {
        throw new InvalidOatFileException("Oat file contains truncated key value store");
      }
      int valueEndOffset = offset;
      return new String(buf, valueStartOffset, valueEndOffset - valueStartOffset);
    }
    offset++;
  }
  return null;
}

throw new InvalidOatFileException("The ELF section headers extend past the end of the file");

throw new InvalidOatFileException("The ELF section headers extend past the end of the file");

@Nullable
public String getKeyValue(@Nonnull String key) {
  int size = getKeyValueStoreSize();
  int offset = headerOffset + keyValueStoreOffset;
  int endOffset = offset + size;
  while (offset < endOffset) {
    int keyStartOffset = offset;
    while (offset < endOffset && buf[offset] != '\0') {
      offset++;
    }
    if (offset >= endOffset) {
      throw new InvalidOatFileException("Oat file contains truncated key value store");
    }
    int keyEndOffset = offset;
    String k = new String(buf, keyStartOffset, keyEndOffset - keyStartOffset);
    if (k.equals(key)) {
      int valueStartOffset = ++offset;
      while (offset < endOffset && buf[offset] != '\0') {
        offset++;
      }
      if (offset >= endOffset) {
        throw new InvalidOatFileException("Oat file contains truncated key value store");
      }
      int valueEndOffset = offset;
      return new String(buf, valueStartOffset, valueEndOffset - valueStartOffset);
    }
    offset++;
  }
  return null;
}

  is64bit = true;
} else {
  throw new InvalidOatFileException(String.format("Invalid word-size value: %x", buf[5]));
  throw new InvalidOatFileException("Oat file has no oatdata symbol");
  throw new InvalidOatFileException("Invalid oat magic value");

  is64bit = true;
} else {
  throw new InvalidOatFileException(String.format("Invalid word-size value: %x", buf[5]));
  throw new InvalidOatFileException("Oat file has no oatdata symbol");
  throw new InvalidOatFileException("Invalid oat magic value");

  public int getFileOffset() {
    SectionHeader sectionHeader;
    try {
      sectionHeader = getSections().get(getSectionIndex());
    } catch (IndexOutOfBoundsException ex) {
      throw new InvalidOatFileException("Section index for symbol is out of bounds");
    }
    long sectionAddress = sectionHeader.getAddress();
    int sectionOffset = sectionHeader.getOffset();
    int sectionSize = sectionHeader.getSize();
    long symbolAddress = getValue();
    if (symbolAddress < sectionAddress || symbolAddress >= sectionAddress + sectionSize) {
      throw new InvalidOatFileException("symbol address lies outside it's associated section");
    }
    long fileOffset = (sectionOffset + (getValue() - sectionAddress));
    assert fileOffset <= Integer.MAX_VALUE;
    return (int)fileOffset;
  }
}

  public int getFileOffset() {
    SectionHeader sectionHeader;
    try {
      sectionHeader = getSections().get(getSectionIndex());
    } catch (IndexOutOfBoundsException ex) {
      throw new InvalidOatFileException("Section index for symbol is out of bounds");
    }
    long sectionAddress = sectionHeader.getAddress();
    int sectionOffset = sectionHeader.getOffset();
    int sectionSize = sectionHeader.getSize();
    long symbolAddress = getValue();
    if (symbolAddress < sectionAddress || symbolAddress >= sectionAddress + sectionSize) {
      throw new InvalidOatFileException("symbol address lies outside it's associated section");
    }
    long fileOffset = (sectionOffset + (getValue() - sectionAddress));
    assert fileOffset <= Integer.MAX_VALUE;
    return (int)fileOffset;
  }
}

public SymbolTable(@Nonnull SectionHeader header) {
  try {
    this.stringTable = new StringTable(getSections().get(header.getLink()));
  } catch (IndexOutOfBoundsException ex) {
    throw new InvalidOatFileException("String table section index is invalid");
  }
  this.offset = header.getOffset();
  this.entrySize = header.getEntrySize();
  this.entryCount = header.getSize() / entrySize;
  if (offset + entryCount * entrySize > buf.length) {
    throw new InvalidOatFileException("Symbol table extends past end of file");
  }
}

public StringTable(@Nonnull SectionHeader header) {
  this.offset = header.getOffset();
  this.size = header.getSize();
  if (offset + size > buf.length) {
    throw new InvalidOatFileException("String table extends past end of file");
  }
}

@Nonnull
private SymbolTable getSymbolTable() {
  for (SectionHeader header: getSections()) {
    if (header.getType() == SectionHeader.TYPE_DYNAMIC_SYMBOL_TABLE) {
      return new SymbolTable(header);
    }
  }
  throw new InvalidOatFileException("Oat file has no symbol table");
}

public SymbolTable(@Nonnull SectionHeader header) {
  try {
    this.stringTable = new StringTable(getSections().get(header.getLink()));
  } catch (IndexOutOfBoundsException ex) {
    throw new InvalidOatFileException("String table section index is invalid");
  }
  this.offset = header.getOffset();
  this.entrySize = header.getEntrySize();
  this.entryCount = header.getSize() / entrySize;
  if (offset + entryCount * entrySize > buf.length) {
    throw new InvalidOatFileException("Symbol table extends past end of file");
  }
}

@Nonnull
private StringTable getSectionNameStringTable() {
  int index = readUshort(50);
  if (index == 0) {
    throw new InvalidOatFileException("There is no section name string table");
  }
  try {
    return new StringTable(getSections().get(index));
  } catch (IndexOutOfBoundsException ex) {
    throw new InvalidOatFileException("The section index for the section name string table is invalid");
  }
}

@Nonnull
private SymbolTable getSymbolTable() {
  for (SectionHeader header: getSections()) {
    if (header.getType() == SectionHeader.TYPE_DYNAMIC_SYMBOL_TABLE) {
      return new SymbolTable(header);
    }
  }
  throw new InvalidOatFileException("Oat file has no symbol table");
}

@Nonnull
private StringTable getSectionNameStringTable() {
  int index = readUshort(50);
  if (index == 0) {
    throw new InvalidOatFileException("There is no section name string table");
  }
  try {
    return new StringTable(getSections().get(index));
  } catch (IndexOutOfBoundsException ex) {
    throw new InvalidOatFileException("The section index for the section name string table is invalid");
  }
}

public StringTable(@Nonnull SectionHeader header) {
  this.offset = header.getOffset();
  this.size = header.getSize();
  if (offset + size > buf.length) {
    throw new InvalidOatFileException("String table extends past end of file");
  }
}