package edu.jiangxin.apktoolbox.file.password.recovery.checker;
   
   import com.github.junrar.Archive;
   import com.github.junrar.exception.CrcErrorException;
   import com.github.junrar.exception.RarException;
   import com.github.junrar.exception.UnsupportedRarVersionException;
   import com.github.junrar.exception.WrongPasswordException;
   import com.github.junrar.rarfile.FileHeader;
   import edu.jiangxin.apktoolbox.file.password.recovery.exception.UnknownException;
  import edu.jiangxin.apktoolbox.file.password.recovery.exception.UnsupportedVersionException;
  
  import java.io.IOException;
  import java.io.OutputStream;
  
  public final class RarChecker extends FileChecker {
      private static final boolean DEBUG = false;
  
      public RarChecker() {
          super();
      }
  
      @Override
      public String[] getFileExtensions() {
          return new String[]{"rar"};
      }
  
      @Override
      public String getFileDescription() {
          return "*.rar";
      }
  
      @Override
      public String getDescription() {
          return "RAR Checker(RAR1.4–7)";
      }
  
      @Override
      public boolean prepareChecker() {
          return true;
      }
  
      @Override
      public boolean checkPassword(String password) {
          boolean result = false;
          try (Archive archive = new Archive(file, password)) {
              while (true) {
                  FileHeader fileHeader = archive.nextFileHeader();
                  if (fileHeader == null) {
                      break;
                  }
                  archive.extractFile(fileHeader, new OutputStream() {
                      @Override
                      public void write(int b) {
                      }
                  });
              }
              result = true;
          } catch (CrcErrorException e) {
              if (DEBUG) {
                  logger.error("[CrcErrorException]password is incorrect: {}", password);
              }
          } catch (UnsupportedRarVersionException e) {
              throw new UnsupportedVersionException(e);
          } catch (WrongPasswordException e) {
              if (DEBUG) {
                  logger.error("[WrongPasswordException]password is incorrect: {}", password);
              }
          } catch (RarException e) {
              if (DEBUG) {
                  logger.error("[RarException]password is incorrect: {}", password);
              }
          } catch (IOException e) {
              throw new UnknownException(e);
          }
          return result;
      }
  }