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.Security.Permissions;
  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         // CAS
  66         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  67         [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  68         public class TraceHandler : IHttpHandler
  69         {
  70                 [SecurityPermission (SecurityAction.Demand, UnmanagedCode = true)]
  71                 public TraceHandler ()
  72                 {
  73                         // LAMESPEC: the ctor is documented to have a Demand for a SecurityPermission
  74                         // but doesn't specify which one it is (tests shows it's UnmanagedCode)
  75                 }
  76
  77 #if NET_2_0
  78                 public void ProcessRequest (HttpContext context)
  79 #else
  80                 void IHttpHandler.ProcessRequest (HttpContext context)
  81 #endif
  82                 {
  83                         TraceManager manager = HttpRuntime.TraceManager;
  84
  85                         if (!manager.Enabled || manager.LocalOnly && !context.Request.IsLocal)
  86                                 throw new TraceNotAvailableException (manager.Enabled);
  87
  88                         HtmlTextWriter output = new HtmlTextWriter (context.Response.Output);
  89
  90                         if (context.Request.QueryString ["clear"] != null)
  91                                 manager.Clear ();
  92
  93                         string id_str = context.Request.QueryString ["id"];
  94                         int id = -1;
  95                         if (id_str != null)
  96                                 id = Int32.Parse (id_str);
  97
  98                         if (id > 0 && id <= manager.ItemCount) {
  99                                 RenderItem (manager, output, id);
 100                         } else {
 101                                 string dir = context.Server.MapPath (UrlUtils.GetDirectory (context.Request.FilePath));
 102                                 RenderMenu (manager, output, dir);
 103                         }
 104
 105                 }
 106
 107 #if NET_2_0
 108                 public bool IsReusable {
 109 #else
 110                 bool IHttpHandler.IsReusable {
 111 #endif
 112                         get {
 113                                 return false;
 114                         }
 115                 }
 116
 117                 private void RenderMenu (TraceManager manager, HtmlTextWriter output, string dir)
 118                 {
 119
 120                         output.RenderBeginTag (HtmlTextWriterTag.Html);
 121
 122                         output.RenderBeginTag (HtmlTextWriterTag.Head);
 123                         TraceData.RenderStyleSheet (output);
 124                         output.RenderEndTag ();
 125
 126                         RenderHeader (output, dir);
 127
 128                         output.RenderBeginTag (HtmlTextWriterTag.Body);
 129                         output.AddAttribute ("class", "tracecontent");
 130                         output.RenderBeginTag (HtmlTextWriterTag.Span);
 131
 132                         Table table = TraceData.CreateTable ();
 133
 134                         table.Rows.Add (TraceData.AltRow ("Requests to the Application"));
 135                         table.Rows.Add (TraceData.SubHeadRow ("No", "Time of Request",
 136                                                         "File", "Status Code", "Verb", "&nbsp;"));
 137
 138                         if (manager.TraceData != null) {
 139                                 for (int i=0; i<manager.ItemCount; i++) {
 140                                         int item = i + 1;
 141                                         TraceData d = manager.TraceData [i];
 142                                         TraceData.RenderAltRow (table, i, item.ToString (), d.RequestTime.ToString (),
 143                                                         d.RequestPath, d.StatusCode.ToString (), d.RequestType,
 144                                                         "<a href=\"Trace.axd?id=" + item + "\" class=\"tinylink\">" +
 145                                                         "<b><nobr>View Details</a>");
 146                                 }
 147                                 table.RenderControl (output);
 148                         }
 149
 150                         output.RenderEndTag ();
 151                         output.RenderEndTag ();
 152
 153                         output.RenderEndTag ();
 154                 }
 155
 156                 private void RenderHeader (HtmlTextWriter output, string dir)
 157                 {
 158                         Table table = TraceData.CreateTable ();
 159                         TableRow row1 = new TableRow ();
 160                         TableRow row2 = new TableRow ();
 161                         TableCell cell1 = new TableCell ();
 162                         TableCell cell2 = new TableCell ();
 163                         TableCell cell3 = new TableCell ();
 164                         TableCell cell4 = new TableCell ();
 165
 166                         cell1.Text = "<h1>Application Trace</h1>";
 167                         cell2.Text = "[ <a href=\"Trace.axd?clear=1\" class=\"link\">clear current trace</a> ]";
 168
 169                         cell2.HorizontalAlign = HorizontalAlign.Right;
 170                         cell2.VerticalAlign = VerticalAlign.Bottom;
 171
 172                         row1.Cells.Add (cell1);
 173                         row1.Cells.Add (cell2);
 174
 175                         cell3.Text = "<h2><h2><p>"; // ummm, WTF?
 176                         cell4.Text = "<b>Physical Directory:</b>" + dir;
 177
 178                         row2.Cells.Add (cell3);
 179                         row2.Cells.Add (cell4);
 180
 181                         table.Rows.Add (row1);
 182                         table.Rows.Add (row2);
 183
 184                         table.RenderControl (output);
 185                 }
 186
 187                 private void RenderItem (TraceManager manager, HtmlTextWriter output, int item)
 188                 {
 189                         manager.TraceData [item - 1].Render (output);
 190                 }
 191
 192                 [MonoTODO ("Appears in class status, but...")]
 193                 protected void ShowDetails (DataSet data)
 194                 {
 195                 }
 196 #if NET_2_0
 197                 [MonoTODO ("Appears in class status, but...")]
 198                 protected void ShowRequests (IList data)
 199                 {
 200                 }
 201
 202                 [MonoTODO]
 203                 protected void ShowVersionDetails ()
 204                 {
 205                 }
 206 #else
 207                 [MonoTODO ("Appears in class status, but...")]
 208                 protected void ShowRequests (ArrayList list)
 209                 {
 210                 }
 211 #endif
 212         }
 213 }