91 lines
3.9 KiB
C#
91 lines
3.9 KiB
C#
using System;
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using System.Globalization;
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using System.Net.Http;
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using Microsoft.Owin;
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using Microsoft.Owin.Logging;
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using Microsoft.Owin.Security;
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using Microsoft.Owin.Security.DataHandler;
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using Microsoft.Owin.Security.DataProtection;
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using Microsoft.Owin.Security.Infrastructure;
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using Owin.Security.Providers.Properties;
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using Owin.Security.Providers.VKontakte.Provider;
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namespace Owin.Security.Providers.VKontakte
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{
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public class VKontakteAuthenticationMiddleware : AuthenticationMiddleware<VKontakteAuthenticationOptions>
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{
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private readonly HttpClient httpClient;
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private readonly ILogger logger;
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public VKontakteAuthenticationMiddleware(OwinMiddleware next, IAppBuilder app,
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VKontakteAuthenticationOptions options)
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: base(next, options)
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{
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if (String.IsNullOrWhiteSpace(Options.ClientId))
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throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, Resources.Exception_OptionMustBeProvided, "ClientId"));
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if (String.IsNullOrWhiteSpace(Options.ClientSecret))
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throw new ArgumentException(String.Format(CultureInfo.CurrentCulture,
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Resources.Exception_OptionMustBeProvided, "ClientSecret"));
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SetDefaults(app);
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logger = app.CreateLogger<VKontakteAuthenticationMiddleware>();
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httpClient = new HttpClient(ResolveHttpMessageHandler(Options))
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{
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Timeout = Options.BackchannelTimeout,
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MaxResponseContentBufferSize = 1024 * 1024 * 10,
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};
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httpClient.DefaultRequestHeaders.UserAgent.ParseAdd("Microsoft Owin VKontakte middleware");
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httpClient.DefaultRequestHeaders.ExpectContinue = false;
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}
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/// <summary>
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/// Provides the <see cref="T:Microsoft.Owin.Security.Infrastructure.AuthenticationHandler" /> object for processing
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/// authentication-related requests.
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/// </summary>
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/// <returns>
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/// An <see cref="T:Microsoft.Owin.Security.Infrastructure.AuthenticationHandler" /> configured with the
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/// <see cref="T:Owin.Security.Providers.VKontakte.GitHubAuthenticationOptions" /> supplied to the constructor.
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/// </returns>
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protected override AuthenticationHandler<VKontakteAuthenticationOptions> CreateHandler()
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{
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return new VKontakteAuthenticationHandler(httpClient, logger);
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}
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private HttpMessageHandler ResolveHttpMessageHandler(VKontakteAuthenticationOptions options)
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{
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HttpMessageHandler handler = options.BackchannelHttpHandler ?? new WebRequestHandler();
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// If they provided a validator, apply it or fail.
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if (options.BackchannelCertificateValidator != null)
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{
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// Set the cert validate callback
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var webRequestHandler = handler as WebRequestHandler;
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if (webRequestHandler == null)
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{
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throw new InvalidOperationException(Resources.Exception_ValidatorHandlerMismatch);
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}
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webRequestHandler.ServerCertificateValidationCallback = options.BackchannelCertificateValidator.Validate;
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}
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return handler;
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}
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private void SetDefaults(IAppBuilder app)
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{
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if (Options.Provider == null)
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Options.Provider = new VKontakteAuthenticationProvider();
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if (Options.StateDataFormat == null)
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{
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IDataProtector dataProtector = app.CreateDataProtector(
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typeof(VKontakteAuthenticationMiddleware).FullName,
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Options.AuthenticationType, "v1");
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Options.StateDataFormat = new PropertiesDataFormat(dataProtector);
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}
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if (String.IsNullOrEmpty(Options.SignInAsAuthenticationType))
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Options.SignInAsAuthenticationType = app.GetDefaultSignInAsAuthenticationType();
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}
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}
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} |