311 lines
12 KiB
C#
311 lines
12 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="ProfileModule.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//------------------------------------------------------------------------------
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/*
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* ProfileModule class
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*
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* Copyright (c) 1999 Microsoft Corporation
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*/
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namespace System.Web.Profile {
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using System.Web;
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using System.Text;
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using System.Web.Compilation;
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using System.Web.Configuration;
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using System.Web.Caching;
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using System.Collections;
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using System.Web.Util;
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using System.Security.Principal;
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using System.Security.Permissions;
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using System.Reflection;
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using System.Web.Security;
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using System.Globalization;
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using System.Runtime.Serialization;
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using System.Collections.Specialized;
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using System.Runtime.Serialization.Formatters.Binary;
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using System.IO;
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using System.Xml.Serialization;
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using System.ComponentModel;
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using System.Configuration;
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#if !FEATURE_PAL
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using System.Web.DataAccess;
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#endif // !FEATURE_PAL
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/// <devdoc>
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/// <para>[To be supplied.]</para>
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/// </devdoc>
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public sealed class ProfileModule : IHttpModule
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{
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private static object s_Lock = new object();
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private ProfileEventHandler _eventHandler = null;
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private ProfileMigrateEventHandler _MigrateEventHandler;
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private ProfileAutoSaveEventHandler _AutoSaveEventHandler;
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/// <devdoc>
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/// <para>
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/// Initializes a new instance of the <see cref='System.Web.Security.ProfileModule'/>
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/// class.
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/// </para>
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/// </devdoc>
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[SecurityPermission(SecurityAction.Demand, Unrestricted = true)]
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public ProfileModule()
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{
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}
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/// <devdoc>
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/// This is a Global.asax event which must be
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/// named FormsAuthorize_OnAuthorize event. It's used by advanced users to
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/// customize cookie authentication.
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/// </devdoc>
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public event ProfileEventHandler Personalize
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{
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add { _eventHandler += value; }
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remove { _eventHandler -= value; }
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}
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public event ProfileMigrateEventHandler MigrateAnonymous
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{
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add { _MigrateEventHandler += value; }
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remove { _MigrateEventHandler -= value; }
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}
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public event ProfileAutoSaveEventHandler ProfileAutoSaving {
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add { _AutoSaveEventHandler += value; }
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remove { _AutoSaveEventHandler -= value; }
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}
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/// <devdoc>
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/// <para>[To be supplied.]</para>
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/// </devdoc>
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public void Dispose()
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{
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}
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/// <devdoc>
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/// <para>[To be supplied.]</para>
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/// </devdoc>
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public void Init(HttpApplication app)
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{
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if (ProfileManager.Enabled) {
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app.AcquireRequestState += new EventHandler(this.OnEnter);
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if (ProfileManager.AutomaticSaveEnabled) {
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app.EndRequest += new EventHandler(this.OnLeave);
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}
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}
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}
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private void OnPersonalize(ProfileEventArgs e)
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{
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if (_eventHandler != null)
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_eventHandler(this, e);
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if (e.Profile != null)
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{
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e.Context._Profile = e.Profile;
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return;
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}
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e.Context._ProfileDelayLoad = true;
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}
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////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////
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/// <devdoc>
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/// <para>[To be supplied.]</para>
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/// </devdoc>
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private void OnEnter(Object source, EventArgs eventArgs)
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{
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HttpContext context = ((HttpApplication)source).Context;
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OnPersonalize(new ProfileEventArgs(context));
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if (context.Request.IsAuthenticated && !string.IsNullOrEmpty(context.Request.AnonymousID) && _MigrateEventHandler != null)
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{
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ProfileMigrateEventArgs e = new ProfileMigrateEventArgs(context, context.Request.AnonymousID);
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_MigrateEventHandler(this, e);
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}
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}
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private void OnLeave(Object source, EventArgs eventArgs)
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{
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HttpApplication app = (HttpApplication)source;
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HttpContext context = app.Context;
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if (context._Profile == null || (object)context._Profile == (object)ProfileBase.SingletonInstance)
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return;
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if (_AutoSaveEventHandler != null) {
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ProfileAutoSaveEventArgs args = new ProfileAutoSaveEventArgs(context);
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_AutoSaveEventHandler(this, args);
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if (!args.ContinueWithProfileAutoSave)
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return;
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}
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context.Profile.Save();
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}
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////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////
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[SecurityPermission(SecurityAction.Assert, Flags = SecurityPermissionFlag.SerializationFormatter)]
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internal static void ParseDataFromDB(string[] names, string values, byte[] buf, SettingsPropertyValueCollection properties)
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{
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if (names == null || values == null || buf == null || properties == null)
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return;
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try {
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for (int iter = 0; iter < names.Length / 4; iter++) {
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string name = names[iter * 4];
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SettingsPropertyValue pp = properties[name];
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if (pp == null) // property not found
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continue;
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int startPos = Int32.Parse(names[iter * 4 + 2], CultureInfo.InvariantCulture);
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int length = Int32.Parse(names[iter * 4 + 3], CultureInfo.InvariantCulture);
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if (length == -1 && !pp.Property.PropertyType.IsValueType) // Null Value
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{
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pp.PropertyValue = null;
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pp.IsDirty = false;
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pp.Deserialized = true;
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}
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if (names[iter * 4 + 1] == "S" && startPos >= 0 && length > 0 && values.Length >= startPos + length) {
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pp.SerializedValue = values.Substring(startPos, length);
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}
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if (names[iter * 4 + 1] == "B" && startPos >= 0 && length > 0 && buf.Length >= startPos + length) {
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byte[] buf2 = new byte[length];
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Buffer.BlockCopy(buf, startPos, buf2, 0, length);
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pp.SerializedValue = buf2;
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}
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}
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} catch { // Eat exceptions
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}
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}
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////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////
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[SecurityPermission(SecurityAction.Assert, Flags = SecurityPermissionFlag.SerializationFormatter)]
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internal static void PrepareDataForSaving(ref string allNames, ref string allValues, ref byte[] buf, bool binarySupported, SettingsPropertyValueCollection properties, bool userIsAuthenticated)
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{
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StringBuilder names = new StringBuilder();
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StringBuilder values = new StringBuilder();
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MemoryStream ms = (binarySupported ? new System.IO.MemoryStream() : null);
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try {
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try {
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bool anyItemsToSave = false;
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foreach (SettingsPropertyValue pp in properties) {
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if (pp.IsDirty) {
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if (!userIsAuthenticated) {
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bool allowAnonymous = (bool)pp.Property.Attributes["AllowAnonymous"];
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if (!allowAnonymous)
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continue;
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}
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anyItemsToSave = true;
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break;
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}
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}
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if (!anyItemsToSave)
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return;
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foreach (SettingsPropertyValue pp in properties) {
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if (!userIsAuthenticated) {
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bool allowAnonymous = (bool)pp.Property.Attributes["AllowAnonymous"];
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if (!allowAnonymous)
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continue;
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}
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if (!pp.IsDirty && pp.UsingDefaultValue) // Not fetched from DB and not written to
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continue;
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int len = 0, startPos = 0;
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string propValue = null;
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if (pp.Deserialized && pp.PropertyValue == null) // is value null?
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{
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len = -1;
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} else {
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object sVal = pp.SerializedValue;
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if (sVal == null) {
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len = -1;
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} else {
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if (!(sVal is string) && !binarySupported) {
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sVal = Convert.ToBase64String((byte[])sVal);
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}
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if (sVal is string) {
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propValue = (string)sVal;
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len = propValue.Length;
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startPos = values.Length;
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} else {
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byte[] b2 = (byte[])sVal;
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startPos = (int)ms.Position;
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ms.Write(b2, 0, b2.Length);
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ms.Position = startPos + b2.Length;
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len = b2.Length;
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}
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}
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}
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names.Append(pp.Name + ":" + ((propValue != null) ? "S" : "B") +
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":" + startPos.ToString(CultureInfo.InvariantCulture) + ":" + len.ToString(CultureInfo.InvariantCulture) + ":");
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if (propValue != null)
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values.Append(propValue);
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}
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if (binarySupported) {
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buf = ms.ToArray();
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}
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} finally {
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if (ms != null)
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ms.Close();
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}
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} catch {
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throw;
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}
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allNames = names.ToString();
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allValues = values.ToString();
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}
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}
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public delegate void ProfileMigrateEventHandler(Object sender, ProfileMigrateEventArgs e);
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public sealed class ProfileMigrateEventArgs : EventArgs {
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private HttpContext _Context;
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private string _AnonymousId;
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public HttpContext Context { get { return _Context;}}
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public string AnonymousID { get { return _AnonymousId;}}
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public ProfileMigrateEventArgs(HttpContext context, string anonymousId) {
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_Context = context;
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_AnonymousId = anonymousId;
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}
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}
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public delegate void ProfileAutoSaveEventHandler(Object sender, ProfileAutoSaveEventArgs e);
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public sealed class ProfileAutoSaveEventArgs : EventArgs
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{
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private HttpContext _Context;
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private bool _ContinueSave = true;
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public HttpContext Context { get { return _Context; } }
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public bool ContinueWithProfileAutoSave { get { return _ContinueSave; } set { _ContinueSave = value; }}
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public ProfileAutoSaveEventArgs(HttpContext context) {
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_Context = context;
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}
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}
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}
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