Program: 20792
Project: 20792
Buggy source:
@Override public AvailableStatus requestFileInformation(DownloadLink downloadLink) throws Exception {
  this.setBrowserExclusive();
  br.getHeaders().put("String_Node_Str",RandomUserAgent.generate());
  br.setFollowRedirects(true);
  if (downloadLink.getName() == null && downloadLink.getStringProperty("String_Node_Str",null) == null) {
    logger.warning("String_Node_Str");
    throw new PluginException(LinkStatus.ERROR_FILE_NOT_FOUND);
  }
  if (downloadLink.getName() != null)   downloadLink.setProperty("String_Node_Str",downloadLink.getName());
  String folderIDregexed=new Regex(downloadLink.getDownloadURL(),"String_Node_Str").getMatch(0);
  downloadLink.setProperty("String_Node_Str","String_Node_Str" + folderIDregexed);
  try {
    if (!br.openGetConnection(downloadLink.getDownloadURL()).getContentType().contains("String_Node_Str")) {
      long size=br.getHttpConnection().getLongContentLength();
      if (size == 0) {
        logger.warning("String_Node_Str");
        throw new PluginException(LinkStatus.ERROR_FILE_NOT_FOUND);
      }
      downloadLink.setDownloadSize(Long.valueOf(size));
      iHaveToWait=false;
      return AvailableStatus.TRUE;
    }
 else {
      logger.info("String_Node_Str" + downloadLink.getStringProperty("String_Node_Str",null) + "String_Node_Str");
      br.getPage(downloadLink.getStringProperty("String_Node_Str",null));
      if (br.containsHTML("String_Node_Str")) {
        logger.info("String_Node_Str");
        throw new PluginException(LinkStatus.ERROR_FILE_NOT_FOUND);
      }
      String finalfilename=downloadLink.getStringProperty("String_Node_Str",null);
      if (finalfilename == null)       throw new PluginException(LinkStatus.ERROR_FILE_NOT_FOUND);
      String[] linkinformation=br.getRegex(INFOREGEX).getColumn(0);
      if (linkinformation == null || linkinformation.length == 0) {
        logger.warning("String_Node_Str");
        throw new PluginException(LinkStatus.ERROR_PLUGIN_DEFECT);
      }
      for (      String info : linkinformation) {
        if (info.contains(finalfilename)) {
          String directlink=new Regex(info,DLLINKREGEX).getMatch(0);
          if ((info.contains(UNAVAILABLE1) || info.contains(UNAVAILABLE2)) && directlink == null) {
            logger.info("String_Node_Str" + downloadLink.getStringProperty("String_Node_Str",null) + "String_Node_Str");
            throw new PluginException(LinkStatus.ERROR_TEMPORARILY_UNAVAILABLE,JDL.L("String_Node_Str","String_Node_Str"));
          }
          if (directlink == null) {
            logger.warning("String_Node_Str");
            throw new PluginException(LinkStatus.ERROR_PLUGIN_DEFECT);
          }
          downloadLink.setUrlDownload(directlink);
          iHaveToWait=true;
          logger.info("String_Node_Str" + downloadLink.getDownloadURL() + "String_Node_Str");
          String filesize=new Regex(info,"String_Node_Str").getMatch(0);
          String filename=new Regex(info,"String_Node_Str").getMatch(0);
          if (filename == null)           filename=new Regex(info,"String_Node_Str").getMatch(0);
          if (filesize == null || filename == null) {
            logger.warning("String_Node_Str");
            throw new PluginException(LinkStatus.ERROR_PLUGIN_DEFECT);
          }
          filesize=filesize.replace("String_Node_Str","String_Node_Str");
          filesize=filesize.replace("String_Node_Str","String_Node_Str");
          filesize=filesize.replace("String_Node_Str","String_Node_Str");
          filesize=filesize.replaceAll("String_Node_Str","String_Node_Str");
          filesize=filesize + "String_Node_Str";
          downloadLink.setFinalFileName(filename);
          downloadLink.setDownloadSize(Regex.getSize(filesize));
          return AvailableStatus.TRUE;
        }
      }
    }
    throw new PluginException(LinkStatus.ERROR_FILE_NOT_FOUND);
  }
  finally {
    if (br.getHttpConnection() != null)     br.getHttpConnection().disconnect();
  }
}

Fixed version (ground truth):
@Override public AvailableStatus requestFileInformation(DownloadLink downloadLink) throws Exception {
  this.setBrowserExclusive();
  br.getHeaders().put("String_Node_Str",RandomUserAgent.generate());
  br.setFollowRedirects(true);
  if (downloadLink.getName() == null && downloadLink.getStringProperty("String_Node_Str",null) == null) {
    logger.warning("String_Node_Str");
    throw new PluginException(LinkStatus.ERROR_FILE_NOT_FOUND);
  }
  if (downloadLink.getName() != null)   downloadLink.setProperty("String_Node_Str",downloadLink.getName());
  String folderIDregexed=new Regex(downloadLink.getDownloadURL(),"String_Node_Str").getMatch(0);
  downloadLink.setProperty("String_Node_Str","String_Node_Str" + folderIDregexed);
  try {
    if (!br.openGetConnection(downloadLink.getDownloadURL()).getContentType().contains("String_Node_Str")) {
      long size=br.getHttpConnection().getLongContentLength();
      if (size == 0) {
        logger.warning("String_Node_Str");
        throw new PluginException(LinkStatus.ERROR_FILE_NOT_FOUND);
      }
      downloadLink.setDownloadSize(Long.valueOf(size));
      iHaveToWait=false;
      return AvailableStatus.TRUE;
    }
 else {
      logger.info("String_Node_Str" + downloadLink.getStringProperty("String_Node_Str",null) + "String_Node_Str");
      br.getPage(downloadLink.getStringProperty("String_Node_Str",null));
      if (br.containsHTML("String_Node_Str")) {
        logger.info("String_Node_Str");
        throw new PluginException(LinkStatus.ERROR_FILE_NOT_FOUND);
      }
      String finalfilename=downloadLink.getStringProperty("String_Node_Str",null);
      if (finalfilename == null)       throw new PluginException(LinkStatus.ERROR_FILE_NOT_FOUND);
      String[] linkinformation=br.getRegex(INFOREGEX).getColumn(0);
      if (linkinformation == null || linkinformation.length == 0) {
        logger.warning("String_Node_Str");
        throw new PluginException(LinkStatus.ERROR_PLUGIN_DEFECT);
      }
      for (      String info : linkinformation) {
        if (info.contains(finalfilename)) {
          String directlink=new Regex(info,DLLINKREGEX).getMatch(0);
          if ((info.contains(UNAVAILABLE1) || info.contains(UNAVAILABLE2)) && directlink == null) {
            logger.info("String_Node_Str" + downloadLink.getStringProperty("String_Node_Str",null) + "String_Node_Str");
            throw new PluginException(LinkStatus.ERROR_TEMPORARILY_UNAVAILABLE,JDL.L("String_Node_Str","String_Node_Str"));
          }
          if (directlink == null) {
            logger.warning("String_Node_Str");
            throw new PluginException(LinkStatus.ERROR_PLUGIN_DEFECT);
          }
          directlink=fixLink(directlink);
          downloadLink.setUrlDownload(directlink);
          iHaveToWait=true;
          logger.info("String_Node_Str" + downloadLink.getDownloadURL() + "String_Node_Str");
          String filesize=new Regex(info,"String_Node_Str").getMatch(0);
          String filename=new Regex(info,"String_Node_Str").getMatch(0);
          if (filename == null)           filename=new Regex(info,"String_Node_Str").getMatch(0);
          if (filesize == null || filename == null) {
            logger.warning("String_Node_Str");
            throw new PluginException(LinkStatus.ERROR_PLUGIN_DEFECT);
          }
          filesize=filesize.replace("String_Node_Str","String_Node_Str");
          filesize=filesize.replace("String_Node_Str","String_Node_Str");
          filesize=filesize.replace("String_Node_Str","String_Node_Str");
          filesize=filesize.replaceAll("String_Node_Str","String_Node_Str");
          filesize=filesize + "String_Node_Str";
          downloadLink.setFinalFileName(filename);
          downloadLink.setDownloadSize(Regex.getSize(filesize));
          return AvailableStatus.TRUE;
        }
      }
    }
    throw new PluginException(LinkStatus.ERROR_FILE_NOT_FOUND);
  }
  finally {
    if (br.getHttpConnection() != null)     br.getHttpConnection().disconnect();
  }
}