// // System.Web.HttpException // // Authors: // Patrik Torstensson (Patrik.Torstensson@labs2.com) // Gonzalo Paniagua Javier (gonzalo@ximian.com) // // (c) 2002 Patrik Torstensson // (c) 2003 Ximian, Inc. (http://www.ximian.com) // using System; using System.IO; using System.Runtime.InteropServices; using System.Text; using System.Web.Compilation; using System.Web.Util; namespace System.Web { public class HttpException : ExternalException { int _HttpCode; int _HR; string fileName; public HttpException () : base () { } public HttpException (string sMessage) : base (sMessage) { } public HttpException (string sMessage, Exception InnerException) : base (sMessage, InnerException) { } public HttpException (int iHttpCode, string sMessage) : base (sMessage) { _HttpCode = iHttpCode; } public HttpException (int iHttpCode, string sMessage, int iHR) : base (sMessage) { _HttpCode = iHttpCode; _HR = iHR; } public HttpException (string sMessage, int iHR) : base (sMessage) { _HR = iHR; } public HttpException (int iHttpCode, string sMessage, Exception InnerException) : base (sMessage, InnerException) { _HttpCode = iHttpCode; } internal HttpException (string message, string fileName) : base (message) { this.fileName = fileName; } public string GetHtmlErrorMessage () { if (!(this.InnerException is HtmlizedException)) return GetDefaultErrorMessage (); return GetHtmlizedErrorMessage (); } string GetDefaultErrorMessage () { StringBuilder builder = new StringBuilder ("\n"); builder.Append ("Error"); //FIXME builder.AppendFormat ("" + "

Server error in '{0}' " + "application

\n", HttpRuntime.AppDomainAppVirtualPath); builder.AppendFormat ("

{0}

\n", Message); builder.AppendFormat ("Description: {0}\n

\n", "Error processing request."); builder.AppendFormat ("Error Message: {0}\n

\n", HtmlEncode (this.Message)); builder.AppendFormat ("Stack Trace: "); Exception e = (InnerException != null) ? InnerException : this; builder.Append ("\n\n
"); WriteTextAsCode (builder, e.ToString ()); builder.Append ("
\n

\n"); builder.Append ("

\n\n\n"); builder.AppendFormat ("\n", HttpUtility.HtmlEncode (this.ToString ())); return builder.ToString (); } static string HtmlEncode (string s) { if (s == null) return s; string res = HttpUtility.HtmlEncode (s); return res.Replace ("\n", "
"); } string GetHtmlizedErrorMessage () { StringBuilder builder = new StringBuilder ("\n"); HtmlizedException exc = (HtmlizedException) this.InnerException; builder.Append (exc.Title); builder.AppendFormat ("" + "

Server Error in '{0}' " + "Application

\n", HttpRuntime.AppDomainAppVirtualPath); builder.AppendFormat ("

{0}

\n", exc.Title); builder.AppendFormat ("Description: {0}\n

\n", HtmlEncode (exc.Description)); builder.AppendFormat ("Error message: {0}\n

\n", HtmlEncode (exc.ErrorMessage)); if (exc.FileName != null) builder.AppendFormat ("File name: {0}", HtmlEncode (exc.FileName)); if (exc.FileText != null) { if (exc.SourceFile != exc.FileName) builder.AppendFormat ("

Source File: {0}", exc.SourceFile); if (exc is ParseException) { builder.Append ("    Line: "); builder.Append (exc.ErrorLines [0]); } builder.Append ("\n

\n"); if (exc is ParseException) { builder.Append ("Source Error: \n"); builder.Append ("\n\n
"); WriteSource (builder, exc); builder.Append ("
\n

\n"); } else { builder.Append ("\n\n
"); WriteSource (builder, exc); builder.Append ("
\n

\n"); } } builder.Append ("

\n\n\n"); builder.AppendFormat ("\n", HtmlEncode (exc.ToString ())); return builder.ToString (); } static void WriteTextAsCode (StringBuilder builder, string text) { builder.Append ("
\n");
			builder.AppendFormat ("{0}", HtmlEncode (text));
			builder.Append ("
\n"); } static void WriteSource (StringBuilder builder, HtmlizedException e) { builder.Append ("
");
			if (e is CompilationException)
				WriteCompilationSource (builder, e);
			else
				WritePageSource (builder, e);

			builder.Append ("
\n"); } static void WriteCompilationSource (StringBuilder builder, HtmlizedException e) { int [] a = e.ErrorLines; string s; int line = 0; int index = 0; int errline = 0; if (a != null && a.Length > 0) errline = a [0]; TextReader reader = new StringReader (e.FileText); while ((s = reader.ReadLine ()) != null) { line++; if (errline == line) builder.Append (""); builder.AppendFormat ("Line {0}: {1}\n", line, HtmlEncode (s)); if (line == errline) { builder.Append (""); errline = (++index < a.Length) ? a [index] : 0; } } } static void WritePageSource (StringBuilder builder, HtmlizedException e) { string s; int line = 0; int beginerror = e.ErrorLines [0]; int enderror = e.ErrorLines [1]; int begin = beginerror - 3; int end = enderror + 3; if (begin <= 0) begin = 1; TextReader reader = new StringReader (e.FileText); while ((s = reader.ReadLine ()) != null) { line++; if (line < begin) continue; if (line > end) break; if (beginerror == line) builder.Append (""); builder.AppendFormat ("{0}\n", HtmlEncode (s)); if (enderror <= line) { builder.Append (""); enderror = end + 1; // one shot } } } [MonoTODO("Check error type and Set the correct error code")] public int GetHttpCode () { return _HttpCode; } public static HttpException CreateFromLastError (string message) { WebTrace.WriteLine ("CreateFromLastError"); return new HttpException (message, 0); } } }