#region Apache License
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//
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// Licensed to the Apache Software Foundation (ASF) under one or more
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// contributor license agreements. See the NOTICE file distributed with
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// this work for additional information regarding copyright ownership.
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// The ASF licenses this file to you under the Apache License, Version 2.0
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// (the "License"); you may not use this file except in compliance with
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// the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#endregion
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// .NET Compact Framework 1.0 has no support for reading assembly attributes
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#if !NETCF
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using System;
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using System.Reflection;
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using log4net.Util;
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using log4net.Repository;
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using log4net.Core;
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namespace log4net.Config
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{
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/// <summary>
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/// Assembly level attribute to configure the <see cref="SecurityContextProvider"/>.
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/// </summary>
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/// <remarks>
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/// <para>
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/// This attribute may only be used at the assembly scope and can only
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/// be used once per assembly.
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/// </para>
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/// <para>
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/// Use this attribute to configure the <see cref="XmlConfigurator"/>
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/// without calling one of the <see cref="XmlConfigurator.Configure()"/>
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/// methods.
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/// </para>
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/// </remarks>
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/// <author>Nicko Cadell</author>
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[AttributeUsage(AttributeTargets.Assembly)]
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[Serializable]
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public sealed class SecurityContextProviderAttribute : ConfiguratorAttribute
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{
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#region Constructor
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/// <summary>
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/// Construct provider attribute with type specified
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/// </summary>
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/// <param name="providerType">the type of the provider to use</param>
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/// <remarks>
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/// <para>
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/// The provider specified must subclass the <see cref="SecurityContextProvider"/>
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/// class.
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/// </para>
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/// </remarks>
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public SecurityContextProviderAttribute(Type providerType) : base(100) /* configurator priority 100 to execute before the XmlConfigurator */
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{
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m_providerType = providerType;
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}
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#endregion
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#region Public Instance Properties
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/// <summary>
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/// Gets or sets the type of the provider to use.
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/// </summary>
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/// <value>
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/// the type of the provider to use.
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/// </value>
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/// <remarks>
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/// <para>
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/// The provider specified must subclass the <see cref="SecurityContextProvider"/>
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/// class.
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/// </para>
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/// </remarks>
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public Type ProviderType
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{
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get { return m_providerType; }
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set { m_providerType = value; }
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}
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#endregion Public Instance Properties
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#region Override ConfiguratorAttribute
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/// <summary>
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/// Configures the SecurityContextProvider
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/// </summary>
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/// <param name="sourceAssembly">The assembly that this attribute was defined on.</param>
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/// <param name="targetRepository">The repository to configure.</param>
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/// <remarks>
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/// <para>
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/// Creates a provider instance from the <see cref="ProviderType"/> specified.
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/// Sets this as the default security context provider <see cref="SecurityContextProvider.DefaultProvider"/>.
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/// </para>
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/// </remarks>
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override public void Configure(Assembly sourceAssembly, ILoggerRepository targetRepository)
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{
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if (m_providerType == null)
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{
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LogLog.Error(declaringType, "Attribute specified on assembly ["+sourceAssembly.FullName+"] with null ProviderType.");
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}
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else
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{
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LogLog.Debug(declaringType, "Creating provider of type ["+ m_providerType.FullName +"]");
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SecurityContextProvider provider = Activator.CreateInstance(m_providerType) as SecurityContextProvider;
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if (provider == null)
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{
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LogLog.Error(declaringType, "Failed to create SecurityContextProvider instance of type ["+m_providerType.Name+"].");
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}
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else
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{
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SecurityContextProvider.DefaultProvider = provider;
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}
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}
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}
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#endregion
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#region Private Instance Fields
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private Type m_providerType = null;
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#endregion Private Instance Fields
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#region Private Static Fields
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/// <summary>
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/// The fully qualified type of the SecurityContextProviderAttribute class.
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/// </summary>
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/// <remarks>
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/// Used by the internal logger to record the Type of the
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/// log message.
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/// </remarks>
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private readonly static Type declaringType = typeof(SecurityContextProviderAttribute);
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#endregion Private Static Fields
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}
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}
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#endif // !NETCF
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