mcs/class/System.Web/System.Web.Handlers/TraceHandler.cs

   1 //
   2 // System.Web.Handlers.TraceHandler
   3 //
   4 // Authors:
   5 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   6 //      Jackson Harper (jackson@ximian.com)
   7 //
   8 // (C) 2002 Ximian, Inc (http://www.ximian.com)
   9 // (C) 2004 Novell, Inc (http://www.novell.com)
  10 //
  11
  12 using System.Collections;
  13 using System.Data;
  14 using System.Web;
  15 using System.Web.Util;
  16 using System.Web.UI;
  17 using System.Web.UI.WebControls;
  18
  19 namespace System.Web.Handlers
  20 {
  21         public class TraceHandler : IHttpHandler
  22         {
  23                 void IHttpHandler.ProcessRequest (HttpContext context)
  24                 {
  25                         TraceManager manager = HttpRuntime.TraceManager;
  26
  27                         if (manager.LocalOnly && !context.Request.IsLocal) {
  28                                 // Need to figure out the error message that goes here
  29                                 // but I only have cassini for testing
  30                                 return;
  31                         }
  32
  33                         HtmlTextWriter output = new HtmlTextWriter (context.Response.Output);
  34
  35                         if (context.Request.QueryString ["clear"] != null)
  36                                 manager.Clear ();
  37
  38                         string id_str = context.Request.QueryString ["id"];
  39                         int id = -1;
  40                         if (id_str != null)
  41                                 id = Int32.Parse (id_str);
  42
  43                         if (id > 0 && id <= manager.ItemCount) {
  44                                 RenderItem (manager, output, id);
  45                         } else {
  46                                 string dir = context.Server.MapPath (UrlUtils.GetDirectory (context.Request.FilePath));
  47                                 RenderMenu (manager, output, dir);
  48                         }
  49
  50                 }
  51
  52                 bool IHttpHandler.IsReusable
  53                 {
  54                         get {
  55                                 return false;
  56                         }
  57                 }
  58
  59                 private void RenderMenu (TraceManager manager, HtmlTextWriter output, string dir)
  60                 {
  61
  62                         output.RenderBeginTag (HtmlTextWriterTag.Html);
  63
  64                         output.RenderBeginTag (HtmlTextWriterTag.Head);
  65                         TraceData.RenderStyleSheet (output);
  66                         output.RenderEndTag ();
  67
  68                         RenderHeader (output, dir);
  69
  70                         output.RenderBeginTag (HtmlTextWriterTag.Body);
  71                         output.AddAttribute ("class", "tracecontent");
  72                         output.RenderBeginTag (HtmlTextWriterTag.Span);
  73
  74                         Table table = TraceData.CreateTable ();
  75
  76                         table.Rows.Add (TraceData.AltRow ("Requests to the Application"));
  77                         table.Rows.Add (TraceData.SubHeadRow ("No", "Time of Request",
  78                                                         "File", "Status Code", "Verb", "&nbsp;"));
  79
  80                         if (manager.TraceData != null) {
  81                                 for (int i=0; i<manager.ItemCount; i++) {
  82                                         int item = i + 1;
  83                                         TraceData d = manager.TraceData [i];
  84                                         TraceData.RenderAltRow (table, i, item.ToString (), d.RequestTime.ToString (),
  85                                                         d.RequestPath, d.StatusCode.ToString (), d.RequestType,
  86                                                         "<a href=\"Trace.axd?id=" + item + "\" class=\"tinylink\">" +
  87                                                         "<b><nobr>View Details</a>");
  88                                 }
  89                                 table.RenderControl (output);
  90                         }
  91
  92                         output.RenderEndTag ();
  93                         output.RenderEndTag ();
  94
  95                         output.RenderEndTag ();
  96                 }
  97
  98                 private void RenderHeader (HtmlTextWriter output, string dir)
  99                 {
 100                         Table table = TraceData.CreateTable ();
 101                         TableRow row1 = new TableRow ();
 102                         TableRow row2 = new TableRow ();
 103                         TableCell cell1 = new TableCell ();
 104                         TableCell cell2 = new TableCell ();
 105                         TableCell cell3 = new TableCell ();
 106                         TableCell cell4 = new TableCell ();
 107
 108                         cell1.Text = "<h1>Application Trace</h1>";
 109                         cell2.Text = "[ <a href=\"Trace.axd?clear=1\" class=\"link\">clear current trace</a> ]";
 110
 111                         cell2.HorizontalAlign = HorizontalAlign.Right;
 112                         cell2.VerticalAlign = VerticalAlign.Bottom;
 113
 114                         row1.Cells.Add (cell1);
 115                         row1.Cells.Add (cell2);
 116
 117                         cell3.Text = "<h2><h2><p>"; // ummm, WTF?
 118                         cell4.Text = "<b>Physical Directory:</b>" + dir;
 119
 120                         row2.Cells.Add (cell3);
 121                         row2.Cells.Add (cell4);
 122
 123                         table.Rows.Add (row1);
 124                         table.Rows.Add (row2);
 125
 126                         table.RenderControl (output);
 127                 }
 128
 129                 private void RenderItem (TraceManager manager, HtmlTextWriter output, int item)
 130                 {
 131                         manager.TraceData [item - 1].Render (output);
 132                 }
 133
 134                 [MonoTODO ("Appears in class status, but...")]
 135                 protected void ShowDetails (DataSet data)
 136                 {
 137                 }
 138
 139                 [MonoTODO ("Appears in class status, but...")]
 140                 protected void ShowRequests (ArrayList list)
 141                 {
 142                 }
 143         }
 144 }
 145