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 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System.Collections;
  34 using System.Data;
  35 using System.Web;
  36 using System.Web.Util;
  37 using System.Web.UI;
  38 using System.Web.UI.WebControls;
  39
  40 namespace System.Web.Handlers
  41 {
  42 #if NET_2_0
  43         [Serializable]
  44 #endif
  45         class TraceNotAvailableException : HttpException
  46         {
  47                 bool notLocal;
  48
  49                 public TraceNotAvailableException (bool notLocal) :
  50                         base (notLocal ? 403 : 500, "Trace Error")
  51                 {
  52                         this.notLocal = notLocal;
  53                 }
  54
  55                 internal override string Description {
  56                         get {
  57                                 if (notLocal)
  58                                         return "Trace is not enabled for remote clients.";
  59
  60                                 return "Trace.axd is not enabled in the configuration file for this application.";
  61                         }
  62                 }
  63         }
  64
  65         public class TraceHandler : IHttpHandler
  66         {
  67                 void IHttpHandler.ProcessRequest (HttpContext context)
  68                 {
  69                         TraceManager manager = HttpRuntime.TraceManager;
  70
  71                         if (!manager.Enabled || manager.LocalOnly && !context.Request.IsLocal)
  72                                 throw new TraceNotAvailableException (manager.Enabled);
  73
  74                         HtmlTextWriter output = new HtmlTextWriter (context.Response.Output);
  75
  76                         if (context.Request.QueryString ["clear"] != null)
  77                                 manager.Clear ();
  78
  79                         string id_str = context.Request.QueryString ["id"];
  80                         int id = -1;
  81                         if (id_str != null)
  82                                 id = Int32.Parse (id_str);
  83
  84                         if (id > 0 && id <= manager.ItemCount) {
  85                                 RenderItem (manager, output, id);
  86                         } else {
  87                                 string dir = context.Server.MapPath (UrlUtils.GetDirectory (context.Request.FilePath));
  88                                 RenderMenu (manager, output, dir);
  89                         }
  90
  91                 }
  92
  93                 bool IHttpHandler.IsReusable
  94                 {
  95                         get {
  96                                 return false;
  97                         }
  98                 }
  99
 100                 private void RenderMenu (TraceManager manager, HtmlTextWriter output, string dir)
 101                 {
 102
 103                         output.RenderBeginTag (HtmlTextWriterTag.Html);
 104
 105                         output.RenderBeginTag (HtmlTextWriterTag.Head);
 106                         TraceData.RenderStyleSheet (output);
 107                         output.RenderEndTag ();
 108
 109                         RenderHeader (output, dir);
 110
 111                         output.RenderBeginTag (HtmlTextWriterTag.Body);
 112                         output.AddAttribute ("class", "tracecontent");
 113                         output.RenderBeginTag (HtmlTextWriterTag.Span);
 114
 115                         Table table = TraceData.CreateTable ();
 116
 117                         table.Rows.Add (TraceData.AltRow ("Requests to the Application"));
 118                         table.Rows.Add (TraceData.SubHeadRow ("No", "Time of Request",
 119                                                         "File", "Status Code", "Verb", "&nbsp;"));
 120
 121                         if (manager.TraceData != null) {
 122                                 for (int i=0; i<manager.ItemCount; i++) {
 123                                         int item = i + 1;
 124                                         TraceData d = manager.TraceData [i];
 125                                         TraceData.RenderAltRow (table, i, item.ToString (), d.RequestTime.ToString (),
 126                                                         d.RequestPath, d.StatusCode.ToString (), d.RequestType,
 127                                                         "<a href=\"Trace.axd?id=" + item + "\" class=\"tinylink\">" +
 128                                                         "<b><nobr>View Details</a>");
 129                                 }
 130                                 table.RenderControl (output);
 131                         }
 132
 133                         output.RenderEndTag ();
 134                         output.RenderEndTag ();
 135
 136                         output.RenderEndTag ();
 137                 }
 138
 139                 private void RenderHeader (HtmlTextWriter output, string dir)
 140                 {
 141                         Table table = TraceData.CreateTable ();
 142                         TableRow row1 = new TableRow ();
 143                         TableRow row2 = new TableRow ();
 144                         TableCell cell1 = new TableCell ();
 145                         TableCell cell2 = new TableCell ();
 146                         TableCell cell3 = new TableCell ();
 147                         TableCell cell4 = new TableCell ();
 148
 149                         cell1.Text = "<h1>Application Trace</h1>";
 150                         cell2.Text = "[ <a href=\"Trace.axd?clear=1\" class=\"link\">clear current trace</a> ]";
 151
 152                         cell2.HorizontalAlign = HorizontalAlign.Right;
 153                         cell2.VerticalAlign = VerticalAlign.Bottom;
 154
 155                         row1.Cells.Add (cell1);
 156                         row1.Cells.Add (cell2);
 157
 158                         cell3.Text = "<h2><h2><p>"; // ummm, WTF?
 159                         cell4.Text = "<b>Physical Directory:</b>" + dir;
 160
 161                         row2.Cells.Add (cell3);
 162                         row2.Cells.Add (cell4);
 163
 164                         table.Rows.Add (row1);
 165                         table.Rows.Add (row2);
 166
 167                         table.RenderControl (output);
 168                 }
 169
 170                 private void RenderItem (TraceManager manager, HtmlTextWriter output, int item)
 171                 {
 172                         manager.TraceData [item - 1].Render (output);
 173                 }
 174
 175                 [MonoTODO ("Appears in class status, but...")]
 176                 protected void ShowDetails (DataSet data)
 177                 {
 178                 }
 179
 180                 [MonoTODO ("Appears in class status, but...")]
 181                 protected void ShowRequests (ArrayList list)
 182                 {
 183                 }
 184         }
 185 }
 186