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Diffstat (limited to 'src/DotNetOpenAuth.OpenId/OpenId/Extensions/ExtensionBase.cs')
| -rw-r--r-- | src/DotNetOpenAuth.OpenId/OpenId/Extensions/ExtensionBase.cs | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/src/DotNetOpenAuth.OpenId/OpenId/Extensions/ExtensionBase.cs b/src/DotNetOpenAuth.OpenId/OpenId/Extensions/ExtensionBase.cs new file mode 100644 index 0000000..108ac52 --- /dev/null +++ b/src/DotNetOpenAuth.OpenId/OpenId/Extensions/ExtensionBase.cs @@ -0,0 +1,190 @@ +//----------------------------------------------------------------------- +// <copyright file="ExtensionBase.cs" company="Andrew Arnott"> +// Copyright (c) Andrew Arnott. All rights reserved. +// </copyright> +//----------------------------------------------------------------------- + +namespace DotNetOpenAuth.OpenId.Extensions { + using System; + using System.Collections.Generic; + using System.Linq; + using System.Text; + using DotNetOpenAuth.Messaging; + using DotNetOpenAuth.OpenId.Messages; + + /// <summary> + /// A handy base class for built-in extensions. + /// </summary> + [Serializable] + public class ExtensionBase : IOpenIdMessageExtension { + /// <summary> + /// Backing store for the <see cref="IOpenIdMessageExtension.TypeUri"/> property. + /// </summary> + private string typeUri; + + /// <summary> + /// Backing store for the <see cref="IOpenIdMessageExtension.AdditionalSupportedTypeUris"/> property. + /// </summary> + private IEnumerable<string> additionalSupportedTypeUris; + + /// <summary> + /// Backing store for the <see cref="IMessage.ExtraData"/> property. + /// </summary> + private Dictionary<string, string> extraData = new Dictionary<string, string>(); + + /// <summary> + /// Initializes a new instance of the <see cref="ExtensionBase"/> class. + /// </summary> + /// <param name="version">The version of the extension.</param> + /// <param name="typeUri">The type URI to use in the OpenID message.</param> + /// <param name="additionalSupportedTypeUris">The additional supported type URIs by which this extension might be recognized. May be null.</param> + protected ExtensionBase(Version version, string typeUri, IEnumerable<string> additionalSupportedTypeUris) { + this.Version = version; + this.typeUri = typeUri; + this.additionalSupportedTypeUris = additionalSupportedTypeUris ?? EmptyList<string>.Instance; + } + + #region IOpenIdProtocolMessageExtension Members + + /// <summary> + /// Gets the TypeURI the extension uses in the OpenID protocol and in XRDS advertisements. + /// </summary> + string IOpenIdMessageExtension.TypeUri { + get { return this.TypeUri; } + } + + /// <summary> + /// Gets the additional TypeURIs that are supported by this extension, in preferred order. + /// May be empty if none other than <see cref="IOpenIdMessageExtension.TypeUri"/> is supported, but + /// should not be null. + /// </summary> + /// <remarks> + /// Useful for reading in messages with an older version of an extension. + /// The value in the <see cref="IOpenIdMessageExtension.TypeUri"/> property is always checked before + /// trying this list. + /// If you do support multiple versions of an extension using this method, + /// consider adding a CreateResponse method to your request extension class + /// so that the response can have the context it needs to remain compatible + /// given the version of the extension in the request message. + /// The <see cref="SimpleRegistration.ClaimsRequest.CreateResponse"/> for an example. + /// </remarks> + IEnumerable<string> IOpenIdMessageExtension.AdditionalSupportedTypeUris { + get { return this.AdditionalSupportedTypeUris; } + } + + /// <summary> + /// Gets or sets a value indicating whether this extension was + /// signed by the OpenID Provider. + /// </summary> + /// <value> + /// <c>true</c> if this instance is signed by the provider; otherwise, <c>false</c>. + /// </value> + bool IOpenIdMessageExtension.IsSignedByRemoteParty { + get { return this.IsSignedByRemoteParty; } + set { this.IsSignedByRemoteParty = value; } + } + + #endregion + + #region IMessage Properties + + /// <summary> + /// Gets the version of the protocol or extension this message is prepared to implement. + /// </summary> + public Version Version { get; private set; } + + /// <summary> + /// Gets the extra, non-standard Protocol parameters included in the message. + /// </summary> + /// <remarks> + /// Implementations of this interface should ensure that this property never returns null. + /// </remarks> + IDictionary<string, string> IMessage.ExtraData { + get { return this.ExtraData; } + } + + #endregion + + /// <summary> + /// Gets the TypeURI the extension uses in the OpenID protocol and in XRDS advertisements. + /// </summary> + protected string TypeUri { + get { return this.typeUri; } + } + + /// <summary> + /// Gets or sets a value indicating whether this extension was + /// signed by the OpenID Provider. + /// </summary> + /// <value> + /// <c>true</c> if this instance is signed by the provider; otherwise, <c>false</c>. + /// </value> + protected bool IsSignedByRemoteParty { get; set; } + + /// <summary> + /// Gets the additional TypeURIs that are supported by this extension, in preferred order. + /// May be empty if none other than <see cref="IOpenIdMessageExtension.TypeUri"/> is supported, but + /// should not be null. + /// </summary> + /// <value></value> + /// <remarks> + /// Useful for reading in messages with an older version of an extension. + /// The value in the <see cref="IOpenIdMessageExtension.TypeUri"/> property is always checked before + /// trying this list. + /// If you do support multiple versions of an extension using this method, + /// consider adding a CreateResponse method to your request extension class + /// so that the response can have the context it needs to remain compatible + /// given the version of the extension in the request message. + /// The <see cref="Extensions.SimpleRegistration.ClaimsRequest.CreateResponse"/> for an example. + /// </remarks> + protected IEnumerable<string> AdditionalSupportedTypeUris { + get { return this.additionalSupportedTypeUris; } + } + + /// <summary> + /// Gets the extra, non-standard Protocol parameters included in the message. + /// </summary> + /// <value></value> + /// <remarks> + /// Implementations of this interface should ensure that this property never returns null. + /// </remarks> + protected IDictionary<string, string> ExtraData { + get { return this.extraData; } + } + + #region IMessage Methods + + /// <summary> + /// Checks the message state for conformity to the protocol specification + /// and throws an exception if the message is invalid. + /// </summary> + /// <remarks> + /// <para>Some messages have required fields, or combinations of fields that must relate to each other + /// in specialized ways. After deserializing a message, this method checks the state of the + /// message to see if it conforms to the protocol.</para> + /// <para>Note that this property should <i>not</i> check signatures or perform any state checks + /// outside this scope of this particular message.</para> + /// </remarks> + /// <exception cref="ProtocolException">Thrown if the message is invalid.</exception> + void IMessage.EnsureValidMessage() { + this.EnsureValidMessage(); + } + + #endregion + + /// <summary> + /// Checks the message state for conformity to the protocol specification + /// and throws an exception if the message is invalid. + /// </summary> + /// <remarks> + /// <para>Some messages have required fields, or combinations of fields that must relate to each other + /// in specialized ways. After deserializing a message, this method checks the state of the + /// message to see if it conforms to the protocol.</para> + /// <para>Note that this property should <i>not</i> check signatures or perform any state checks + /// outside this scope of this particular message.</para> + /// </remarks> + /// <exception cref="ProtocolException">Thrown if the message is invalid.</exception> + protected virtual void EnsureValidMessage() { + } + } +} |