public static string RemoveProxyHttpUrls(string html)
{
var baseHandlerUrl = MailStoragePathCombiner.GetProxyHttpHandlerUrl() + "?url=";
var doc = new HtmlDocument();
doc.LoadHtml(html);
var nodesWithProxy = doc.DocumentNode.DescendantsAndSelf()
.Where(n => n.HasAttributes && n.Attributes.Any(a => a.Value.Contains(baseHandlerUrl)))
.ToList();
var needRewrite = false;
foreach (var n in nodesWithProxy)
{
var attributes = n.Attributes.Where(a => a.Value.Contains(baseHandlerUrl));
foreach (var attribute in attributes)
{
var splited = attribute.Value.Split(new[] { baseHandlerUrl },
StringSplitOptions.RemoveEmptyEntries);
if (!splited.Any())
{
continue;
}
var raw = splited.Length > 1 ? splited[1] : splited[0];
var end = raw.IndexOfAny(new[] { '\"', ')' });
var encodedUrl = end == -1 ? raw : raw.Substring(0, end);
var url = Encoding.UTF8.GetString(Convert.FromBase64String(encodedUrl));
attribute.Value = attribute.Value.Replace(baseHandlerUrl + encodedUrl, url);
needRewrite = true;
}
}
return(needRewrite ? doc.DocumentNode.OuterHtml : html);
}