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// <copyright>
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
namespace System.ServiceModel.Web.Configuration
{
using System;
using System.Collections.Specialized;
using System.Configuration;
using System.Diagnostics.CodeAnalysis;
using System.Runtime;
using System.Security.Permissions;
internal static class AppSettings
{
private const string EnableAutomaticEndpointsCompatabilityString = "wcf:webservicehost:enableautomaticendpointscompatability";
private const string DisableHtmlErrorPageExceptionHtmlEncodingString = "wcf:web:HtmlErrorPage:DisableExceptionMessageHtmlEncoding";
private static readonly object appSettingsLock = new object();
private static bool enableAutomaticEndpointCompat = false;
private static bool disableHtmlErrorPageExceptionHtmlEncoding = false;
private static volatile bool settingsInitialized = false;
public static bool EnableAutomaticEndpointsCompatibility
{
get
{
EnsureSettingsLoaded();
return enableAutomaticEndpointCompat;
}
}
public static bool DisableHtmlErrorPageExceptionHtmlEncoding
{
get
{
EnsureSettingsLoaded();
return disableHtmlErrorPageExceptionHtmlEncoding;
}
}
[SuppressMessage(FxCop.Category.ReliabilityBasic, "Reliability104:CaughtAndHandledExceptionsRule",
Justification = "Handle the configuration exceptions here to avoid regressions on customer's existing scenarios")]
private static void EnsureSettingsLoaded()
{
if (!settingsInitialized)
{
lock (appSettingsLock)
{
if (!settingsInitialized)
{
NameValueCollection appSettingsSection = null;
try
{
appSettingsSection = ConfigurationManager.AppSettings;
}
catch (ConfigurationErrorsException)
{
}
finally
{
if ((appSettingsSection == null) || !bool.TryParse(appSettingsSection[EnableAutomaticEndpointsCompatabilityString], out enableAutomaticEndpointCompat))
{
enableAutomaticEndpointCompat = false;
}
if ((appSettingsSection == null) || !bool.TryParse(appSettingsSection[DisableHtmlErrorPageExceptionHtmlEncodingString], out disableHtmlErrorPageExceptionHtmlEncoding))
{
disableHtmlErrorPageExceptionHtmlEncoding = false;
}
settingsInitialized = true;
}
}
}
}
}
}
}
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