using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Web; using FLocal.Core; namespace FLocal.Common.BBCodes { class UrlProcessor { public struct UrlInfo { public readonly bool isLocal; private readonly string rawRelativeUrl; public string relativeUrl { get { return this.rawRelativeUrl; //return HttpUtility.UrlEncode(this.rawRelativeUrl); } } public UrlInfo(bool isLocal, string relativeUrl) { this.isLocal = isLocal; this.rawRelativeUrl = relativeUrl; } } private static string Safe(string str) { return System.Web.HttpUtility.HtmlEncode(str); } public static HashSet KnownAliases = new HashSet { "forum.local", "forum.b.gz.ru", "www.snto-msu.net", "hq.sectorb.msk.ru", "petaflop.b.gz.ru", "194.88.210.5", "forumlocal.ru", "forumbgz.ru", "forum.hn", }; public const string DOMAIN = ".forum.hn"; public static UrlInfo Process(string url) { if (url.StartsWith("/")) { return new UrlInfo(true, url); } Uri uri; try { uri = new Uri(url); } catch(UriFormatException) { throw new Core.FLocalException("wrong url: " + url); } if (KnownAliases.Contains(uri.Host.ToLower()) || uri.Host.ToLower().EndsWith(DOMAIN)) { return new UrlInfo(true, uri.PathAndQuery); } else { return new UrlInfo(false, uri.ToString()); } } public static string ProcessLink(string link, string title, bool shortenRelative) { bool isExternal = true; string url; if(shortenRelative) { var urlInfo = UrlProcessor.Process(link); url = urlInfo.relativeUrl; isExternal = !urlInfo.isLocal; } else { var urlInfo = new Uri(link); url = urlInfo.ToString(); } if(isExternal) { if(title == null) { title = url; } } else { var linkInfo = URL.UrlManager.Parse(url, new System.Collections.Specialized.NameValueCollection(), true); if(linkInfo == null) { throw new FLocalException("Unable to parse link: " + url); } url = linkInfo.canonicalFull; if(title == null) { title = linkInfo.title; } } string result = "" + Safe(title) + ""; if(isExternal) { result += ""; } return result; } } }