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//
// System.Web.SessionState.SessionStateServerHandler
//
// Author(s):
// Jackson Harper (jackson@ximian.com)
//
// (C) 2003 Novell, Inc, (http://www.novell.com)
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.IO;
using System.Reflection;
using System.Configuration;
using System.Web.Configuration;
using System.Runtime.Remoting;
namespace System.Web.SessionState {
internal class SessionStateServerHandler : ISessionHandler
{
const string CookieName = "ASPSESSION";
private RemoteStateServer state_server;
#if CONFIGURATION_2_0
private SessionStateSection config;
#else
private SessionConfig config;
#endif
public void Dispose ()
{
}
public void Init (SessionStateModule module, HttpApplication context,
#if CONFIGURATION_2_0
SessionStateSection config
#else
SessionConfig config
#endif
)
{
this.config = config;
RemotingConfiguration.Configure (null);
string cons, proto, server, port;
GetConData (config.StateConnectionString, out proto, out server, out port);
cons = String.Format ("{0}://{1}:{2}/StateServer", proto, server, port);
state_server = (RemoteStateServer) Activator.GetObject (typeof (RemoteStateServer), cons);
}
public void UpdateHandler (HttpContext context, SessionStateModule module)
{
HttpSessionState session = context.Session;
if (session == null || session.IsReadOnly)
return;
string id = session.SessionID;
if (!session._abandoned) {
SessionDictionary dict = session.SessionDictionary;
HttpStaticObjectsCollection sobjs = session.StaticObjects;
state_server.Update (id, dict.ToByteArray (), sobjs.ToByteArray ());
} else {
state_server.Remove (id);
}
}
public HttpSessionState UpdateContext (HttpContext context, SessionStateModule module,
bool required, bool read_only, ref bool isNew)
{
if (!required)
return null;
StateServerItem item = null;
HttpSessionState session = null;
SessionDictionary dict = null;
HttpStaticObjectsCollection sobjs = null;
string id = GetId (context);
if (id != null) {
item = state_server.Get (id);
if (item != null) {
dict = SessionDictionary.FromByteArray (item.DictionaryData);
sobjs = HttpStaticObjectsCollection.FromByteArray (item.StaticObjectsData);
session = new HttpSessionState (id, dict,
HttpApplicationFactory.ApplicationState.SessionObjects,
#if CONFIGURATION_2_0
(int)config.Timeout.TotalMinutes, // XXX is this right? we lose some precision here, but since the timeout is in minutes *anyway*...
#else
config.Timeout,
#endif
false, config.CookieLess,
SessionStateMode.StateServer, read_only);
return session;
}
}
id = SessionId.Create (module.Rng);
dict = new SessionDictionary ();
sobjs = HttpApplicationFactory.ApplicationState.SessionObjects;
item = new StateServerItem (dict.ToByteArray (), sobjs.ToByteArray (),
#if CONFIGURATION_2_0
(int)config.Timeout.TotalMinutes
#else
config.Timeout
#endif
);
state_server.Insert (id, item);
session = new HttpSessionState (id, dict, sobjs,
#if CONFIGURATION_2_0
(int)config.Timeout.TotalMinutes,
#else
config.Timeout,
#endif
true,
config.CookieLess, SessionStateMode.StateServer,
read_only);
isNew = true;
return session;
}
private string GetId (HttpContext context)
{
if (!config.CookieLess &&
context.Request.Cookies [CookieName] != null)
return context.Request.Cookies [CookieName].Value;
return null;
}
private void GetConData (string cons, out string proto, out string server, out string port)
{
int ei = cons.IndexOf ('=');
int ci = cons.IndexOf (':');
if (ei < 0 || ci < 0)
throw new Exception ("Invalid StateConnectionString");
proto = cons.Substring (0, ei);
server = cons.Substring (ei+1, ci - ei - 1);
port = cons.Substring (ci+1, cons.Length - ci - 1);
if (proto == "tcpip")
proto = "tcp";
}
}
}
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