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         [Serializable]
  43         class TraceNotAvailableException : HttpException
  44         {
  45                 bool notLocal;
  46
  47                 public TraceNotAvailableException (bool notLocal) :
  48                         base (notLocal ? 403 : 500, "Trace Error")
  49                 {
  50                         this.notLocal = notLocal;
  51                 }
  52
  53                 internal override string Description {
  54                         get {
  55                                 if (notLocal)
  56                                         return "Trace is not enabled for remote clients.";
  57
  58                                 return "Trace.axd is not enabled in the configuration file for this application.";
  59                         }
  60                 }
  61         }
  62
  63         // CAS
  64         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  65         [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  66         public class TraceHandler : IHttpHandler
  67         {
  68                 [SecurityPermission (SecurityAction.Demand, UnmanagedCode = true)]
  69                 public TraceHandler ()
  70                 {
  71                         // LAMESPEC: the ctor is documented to have a Demand for a SecurityPermission
  72                         // but doesn't specify which one it is (tests shows it's UnmanagedCode)
  73                 }
  74
  75                 void IHttpHandler.ProcessRequest (HttpContext context)
  76                 {
  77                         ProcessRequest (context);
  78                 }
  79
  80                 protected void ProcessRequest (HttpContext context)
  81                 {
  82                         TraceManager manager = HttpRuntime.TraceManager;
  83
  84                         if (!manager.Enabled || manager.LocalOnly && !context.Request.IsLocal)
  85                                 throw new TraceNotAvailableException (manager.Enabled);
  86
  87                         HtmlTextWriter output = new HtmlTextWriter (context.Response.Output);
  88
  89                         if (context.Request.QueryString ["clear"] != null) {
  90                                 manager.Clear ();
  91                                 context.Response.Redirect (context.Request.FilePath);
  92                         }
  93
  94                         string id_str = context.Request.QueryString ["id"];
  95                         int id = -1;
  96                         if (id_str != null)
  97                                 id = Int32.Parse (id_str);
  98
  99                         if (id > 0 && id <= manager.ItemCount) {
 100                                 RenderItem (manager, output, id);
 101                         } else {
 102                                 string dir = context.Server.MapPath (UrlUtils.GetDirectory (context.Request.FilePath));
 103                                 RenderMenu (manager, output, dir);
 104                         }
 105
 106                 }
 107
 108                 bool IHttpHandler.IsReusable {
 109                         get { return IsReusable; }
 110                 }
 111
 112                 protected bool IsReusable {
 113                         get {
 114                                 return false;
 115                         }
 116                 }
 117
 118                 void RenderMenu (TraceManager manager, HtmlTextWriter output, string dir)
 119                 {
 120
 121                         output.RenderBeginTag (HtmlTextWriterTag.Html);
 122
 123                         output.RenderBeginTag (HtmlTextWriterTag.Head);
 124                         TraceData.RenderStyleSheet (output);
 125                         output.RenderEndTag ();
 126
 127                         RenderHeader (output, dir);
 128
 129                         output.RenderBeginTag (HtmlTextWriterTag.Body);
 130                         output.AddAttribute ("class", "tracecontent");
 131                         output.RenderBeginTag (HtmlTextWriterTag.Span);
 132
 133                         Table table = TraceData.CreateTable ();
 134
 135                         table.Rows.Add (TraceData.AltRow ("Requests to the Application"));
 136                         table.Rows.Add (TraceData.SubHeadRow ("No", "Time of Request",
 137                                                         "File", "Status Code", "Verb", "&nbsp;"));
 138
 139                         if (manager.TraceData != null) {
 140                                 for (int i=0; i<manager.ItemCount; i++) {
 141                                         int item = i + 1;
 142                                         TraceData d = manager.TraceData [i];
 143                                         TraceData.RenderAltRow (table, i, item.ToString (), d.RequestTime.ToString (),
 144                                                         d.RequestPath, d.StatusCode.ToString (), d.RequestType,
 145                                                         "<a href=\"Trace.axd?id=" + item + "\" class=\"tinylink\">" +
 146                                                         "<b><nobr>View Details</a>");
 147                                 }
 148                                 table.RenderControl (output);
 149                         }
 150
 151                         output.RenderEndTag ();
 152                         output.RenderEndTag ();
 153
 154                         output.RenderEndTag ();
 155                 }
 156
 157                 void RenderHeader (HtmlTextWriter output, string dir)
 158                 {
 159                         Table table = TraceData.CreateTable ();
 160                         TableRow row1 = new TableRow ();
 161                         TableRow row2 = new TableRow ();
 162                         TableCell cell1 = new TableCell ();
 163                         TableCell cell2 = new TableCell ();
 164                         TableCell cell3 = new TableCell ();
 165                         TableCell cell4 = new TableCell ();
 166
 167                         cell1.Text = "<h1>Application Trace</h1>";
 168                         cell2.Text = "[ <a href=\"Trace.axd?clear=1\" class=\"link\">clear current trace</a> ]";
 169
 170                         cell2.HorizontalAlign = HorizontalAlign.Right;
 171                         cell2.VerticalAlign = VerticalAlign.Bottom;
 172
 173                         row1.Cells.Add (cell1);
 174                         row1.Cells.Add (cell2);
 175
 176                         cell3.Text = "<h2><h2><p>"; // ummm, WTF?
 177                         cell4.Text = "<b>Physical Directory:</b>" + dir;
 178
 179                         row2.Cells.Add (cell3);
 180                         row2.Cells.Add (cell4);
 181
 182                         table.Rows.Add (row1);
 183                         table.Rows.Add (row2);
 184
 185                         table.RenderControl (output);
 186                 }
 187
 188                 void RenderItem (TraceManager manager, HtmlTextWriter output, int item)
 189                 {
 190                         manager.TraceData [item - 1].Render (output);
 191                 }
 192
 193                 [MonoLimitation ("Not implemented, does nothing")]
 194                 protected void ShowDetails (DataSet data)
 195                 {
 196                 }
 197                 [MonoLimitation ("Not implemented, does nothing")]
 198                 protected void ShowRequests (IList data)
 199                 {
 200                 }
 201
 202                 [MonoLimitation ("Not implemented, does nothing")]
 203                 protected void ShowVersionDetails ()
 204                 {
 205                 }
 206         }
 207 }