mcs/class/System/System.Net/EndPointManager.cs

   1 //
   2 // System.Net.EndPointManager
   3 //
   4 // Author:
   5 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   6 //
   7 // Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 #if NET_2_0 && SECURITY_DEP
  30
  31 using System.Collections;
  32 using System.Collections.Generic;
  33 namespace System.Net {
  34         sealed class EndPointManager
  35         {
  36                 static Dictionary<IPAddress, Dictionary<int, EndPointListener>> ip_to_endpoints =
  37                                 new Dictionary<IPAddress, Dictionary<int, EndPointListener>> ();
  38
  39                 private EndPointManager ()
  40                 {
  41                 }
  42
  43                 public static void AddListener (HttpListener listener)
  44                 {
  45                         List<string> added = new List<string> ();
  46                         try {
  47                                 lock (ip_to_endpoints) {
  48                                         foreach (string prefix in listener.Prefixes) {
  49                                                 AddPrefixInternal (prefix, listener);
  50                                                 added.Add (prefix);
  51                                         }
  52                                 }
  53                         } catch {
  54                                 foreach (string prefix in added) {
  55                                         RemovePrefixInternal (prefix, listener);
  56                                 }
  57                                 throw;
  58                         }
  59                 }
  60
  61                 public static void AddPrefix (string prefix, HttpListener listener)
  62                 {
  63                         lock (ip_to_endpoints) {
  64                                 AddPrefixInternal (prefix, listener);
  65                         }
  66                 }
  67
  68                 static void AddPrefixInternal (string p, HttpListener listener)
  69                 {
  70                         ListenerPrefix lp = new ListenerPrefix (p);
  71                         if (lp.Path.IndexOf ('%') != -1)
  72                                 throw new HttpListenerException (400, "Invalid path.");
  73
  74                         if (lp.Path.IndexOf ("//") != -1) // TODO: Code?
  75                                 throw new HttpListenerException (400, "Invalid path.");
  76
  77                         // Always listens on all the interfaces, no matter the host name/ip used.
  78                         EndPointListener epl = GetEPListener (IPAddress.Any, lp.Port, listener, lp.Secure);
  79                         epl.AddPrefix (lp, listener);
  80                 }
  81
  82                 static EndPointListener GetEPListener (IPAddress addr, int port, HttpListener listener, bool secure)
  83                 {
  84                         Dictionary<int, EndPointListener> p = null;
  85                         if (ip_to_endpoints.ContainsKey (addr)) {
  86                                 p = ip_to_endpoints [addr];
  87                         } else {
  88                                 p = new Dictionary<int, EndPointListener> ();
  89                                 ip_to_endpoints [addr] = p;
  90                         }
  91
  92                         EndPointListener epl = null;
  93                         if (p.ContainsKey (port)) {
  94                                 epl = p [port];
  95                         } else {
  96                                 epl = new EndPointListener (addr, port, secure);
  97                                 p [port] = epl;
  98                         }
  99
 100                         return epl;
 101                 }
 102
 103                 public static void RemoveEndPoint (EndPointListener epl, IPEndPoint ep)
 104                 {
 105                         lock (ip_to_endpoints) {
 106                                 Dictionary<int, EndPointListener> p = null;
 107                                 p = ip_to_endpoints [ep.Address];
 108                                 p.Remove (ep.Port);
 109                                 epl.Close ();
 110                         }
 111                 }
 112
 113                 public static void RemoveListener (HttpListener listener)
 114                 {
 115                         lock (ip_to_endpoints) {
 116                                 foreach (string prefix in listener.Prefixes) {
 117                                         RemovePrefixInternal (prefix, listener);
 118                                 }
 119                         }
 120                 }
 121
 122                 public static void RemovePrefix (string prefix, HttpListener listener)
 123                 {
 124                         lock (ip_to_endpoints) {
 125                                 RemovePrefixInternal (prefix, listener);
 126                         }
 127                 }
 128
 129                 static void RemovePrefixInternal (string prefix, HttpListener listener)
 130                 {
 131                         ListenerPrefix lp = new ListenerPrefix (prefix);
 132                         if (lp.Path.IndexOf ('%') != -1)
 133                                 return;
 134
 135                         if (lp.Path.IndexOf ("//") != -1)
 136                                 return;
 137
 138                         EndPointListener epl = GetEPListener (IPAddress.Any, lp.Port, listener, lp.Secure);
 139                         epl.RemovePrefix (lp, listener);
 140                 }
 141         }
 142 }
 143 #endif
 144