// Token: 0x06000128 RID: 296 RVA: 0x00004FB0 File Offset: 0x000031B0
internal static Stream GetFilteredStream(ConfigurationContextBase configurationContext, Stream inputStream, Charset charset, BlockStatus blockStatus)
{
HtmlToHtml htmlToHtml = new HtmlToHtml();
TextConvertersInternalHelpers.SetPreserveDisplayNoneStyle(htmlToHtml, true);
WebBeaconFilterLevels filterWebBeaconsAndHtmlForms = configurationContext.FilterWebBeaconsAndHtmlForms;
bool flag = filterWebBeaconsAndHtmlForms == WebBeaconFilterLevels.DisableFilter || blockStatus == BlockStatus.NoNeverAgain;
Encoding encoding = null;
if (charset != null && charset.TryGetEncoding(out encoding))
{
htmlToHtml.DetectEncodingFromMetaTag = false;
htmlToHtml.InputEncoding = encoding;
htmlToHtml.OutputEncoding = encoding;
}
else
{
htmlToHtml.DetectEncodingFromMetaTag = true;
htmlToHtml.InputEncoding = Encoding.ASCII;
htmlToHtml.OutputEncoding = null;
}
htmlToHtml.FilterHtml = true;
if (!flag)
{
htmlToHtml.HtmlTagCallback = new HtmlTagCallback(AttachmentUtilities.webBeaconFilter.ProcessTag);
}
return(new ConverterStream(inputStream, htmlToHtml, ConverterStreamAccess.Read));
}
public static string SanitizeHtml(string unsafeHtml)
{
if (string.IsNullOrEmpty(unsafeHtml))
{
return(unsafeHtml);
}
string result;
using (StringReader stringReader = new StringReader(unsafeHtml))
{
using (StringWriter stringWriter = new StringWriter(CultureInfo.InvariantCulture))
{
HtmlToHtml htmlToHtml = new HtmlToHtml();
TextConvertersInternalHelpers.SetPreserveDisplayNoneStyle(htmlToHtml, true);
htmlToHtml.InputEncoding = Encoding.UTF8;
htmlToHtml.OutputEncoding = Encoding.UTF8;
htmlToHtml.FilterHtml = true;
htmlToHtml.Convert(stringReader, stringWriter);
result = stringWriter.ToString();
}
}
return(result);
}