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649 lines
29 KiB
649 lines
29 KiB
/*
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* Licensed under the Apache License, Version 2.0 (http://www.apache.org/licenses/LICENSE-2.0)
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* See https://github.com/openiddict/openiddict-core for more information concerning
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* the license and the contributors participating to this project.
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*/
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using System;
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using System.Collections.Generic;
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using System.Collections.Immutable;
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using System.ComponentModel;
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using System.Diagnostics;
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using System.IO;
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using System.Text;
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using System.Text.Encodings.Web;
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using System.Text.Json;
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using System.Threading.Tasks;
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using Microsoft.Extensions.Logging;
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using Microsoft.Extensions.Options;
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using Microsoft.Owin.Security;
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using Owin;
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using static OpenIddict.Abstractions.OpenIddictConstants;
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using static OpenIddict.Validation.OpenIddictValidationEvents;
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using static OpenIddict.Validation.Owin.OpenIddictValidationOwinConstants;
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using static OpenIddict.Validation.Owin.OpenIddictValidationOwinHandlerFilters;
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using Properties = OpenIddict.Validation.Owin.OpenIddictValidationOwinConstants.Properties;
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using SR = OpenIddict.Abstractions.OpenIddictResources;
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namespace OpenIddict.Validation.Owin
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{
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[EditorBrowsable(EditorBrowsableState.Never)]
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public static partial class OpenIddictValidationOwinHandlers
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{
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public static ImmutableArray<OpenIddictValidationHandlerDescriptor> DefaultHandlers { get; } = ImmutableArray.Create(
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/*
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* Request top-level processing:
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*/
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InferIssuerFromHost.Descriptor,
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/*
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* Authentication processing:
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*/
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ExtractAccessTokenFromAuthorizationHeader.Descriptor,
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ExtractAccessTokenFromBodyForm.Descriptor,
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ExtractAccessTokenFromQueryString.Descriptor,
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/*
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* Challenge processing:
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*/
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AttachHostChallengeError.Descriptor,
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/*
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* Response processing:
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*/
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AttachHttpResponseCode<ProcessChallengeContext>.Descriptor,
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AttachCacheControlHeader<ProcessChallengeContext>.Descriptor,
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AttachWwwAuthenticateHeader<ProcessChallengeContext>.Descriptor,
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ProcessChallengeErrorResponse<ProcessChallengeContext>.Descriptor,
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ProcessJsonResponse<ProcessChallengeContext>.Descriptor,
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AttachHttpResponseCode<ProcessErrorContext>.Descriptor,
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AttachCacheControlHeader<ProcessErrorContext>.Descriptor,
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AttachWwwAuthenticateHeader<ProcessErrorContext>.Descriptor,
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ProcessChallengeErrorResponse<ProcessErrorContext>.Descriptor,
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ProcessJsonResponse<ProcessErrorContext>.Descriptor);
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/// <summary>
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/// Contains the logic responsible of infering the default issuer from the HTTP request host and validating it.
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/// Note: this handler is not used when the OpenID Connect request is not initially handled by OWIN.
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/// </summary>
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public class InferIssuerFromHost : IOpenIddictValidationHandler<ProcessRequestContext>
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{
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/// <summary>
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/// Gets the default descriptor definition assigned to this handler.
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/// </summary>
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public static OpenIddictValidationHandlerDescriptor Descriptor { get; }
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= OpenIddictValidationHandlerDescriptor.CreateBuilder<ProcessRequestContext>()
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.AddFilter<RequireOwinRequest>()
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.UseSingletonHandler<InferIssuerFromHost>()
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.SetOrder(int.MinValue + 100_000)
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.SetType(OpenIddictValidationHandlerType.BuiltIn)
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.Build();
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/// <inheritdoc/>
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public ValueTask HandleAsync(ProcessRequestContext context)
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{
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if (context is null)
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{
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throw new ArgumentNullException(nameof(context));
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}
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// This handler only applies to OWIN requests. If The OWIN request cannot be resolved,
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// this may indicate that the request was incorrectly processed by another server stack.
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var request = context.Transaction.GetOwinRequest();
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if (request is null)
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{
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throw new InvalidOperationException(SR.GetResourceString(SR.ID0120));
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}
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// Only use the current host as the issuer if the
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// issuer was not explicitly set in the options.
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if (context.Issuer is not null)
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{
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return default;
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}
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if (string.IsNullOrEmpty(request.Host.Value))
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{
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context.Reject(
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error: Errors.InvalidRequest,
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description: SR.FormatID2081(Headers.Host));
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return default;
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}
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if (!Uri.TryCreate(request.Scheme + "://" + request.Host + request.PathBase, UriKind.Absolute, out Uri? issuer) ||
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!issuer.IsWellFormedOriginalString())
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{
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context.Reject(
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error: Errors.InvalidRequest,
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description: SR.FormatID2082(Headers.Host));
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return default;
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}
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context.Issuer = issuer;
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return default;
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}
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}
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/// <summary>
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/// Contains the logic responsible of extracting the access token from the standard HTTP Authorization header.
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/// Note: this handler is not used when the OpenID Connect request is not initially handled by OWIN.
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/// </summary>
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public class ExtractAccessTokenFromAuthorizationHeader : IOpenIddictValidationHandler<ProcessAuthenticationContext>
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{
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/// <summary>
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/// Gets the default descriptor definition assigned to this handler.
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/// </summary>
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public static OpenIddictValidationHandlerDescriptor Descriptor { get; }
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= OpenIddictValidationHandlerDescriptor.CreateBuilder<ProcessAuthenticationContext>()
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.AddFilter<RequireOwinRequest>()
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.UseSingletonHandler<ExtractAccessTokenFromAuthorizationHeader>()
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.SetOrder(int.MinValue + 50_000)
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.SetType(OpenIddictValidationHandlerType.BuiltIn)
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.Build();
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/// <inheritdoc/>
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public ValueTask HandleAsync(ProcessAuthenticationContext context)
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{
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if (context is null)
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{
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throw new ArgumentNullException(nameof(context));
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}
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// If a token was already resolved, don't overwrite it.
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if (!string.IsNullOrEmpty(context.Token))
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{
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return default;
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}
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// This handler only applies to OWIN requests. If The OWIN request cannot be resolved,
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// this may indicate that the request was incorrectly processed by another server stack.
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var request = context.Transaction.GetOwinRequest();
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if (request is null)
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{
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throw new InvalidOperationException(SR.GetResourceString(SR.ID0120));
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}
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// Resolve the access token from the standard Authorization header.
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// See https://tools.ietf.org/html/rfc6750#section-2.1 for more information.
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string header = request.Headers[Headers.Authorization];
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if (!string.IsNullOrEmpty(header) && header.StartsWith("Bearer ", StringComparison.OrdinalIgnoreCase))
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{
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context.Token = header.Substring("Bearer ".Length);
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context.TokenType = TokenTypeHints.AccessToken;
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return default;
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}
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return default;
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}
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}
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/// <summary>
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/// Contains the logic responsible of extracting the access token from the standard access_token form parameter.
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/// Note: this handler is not used when the OpenID Connect request is not initially handled by OWIN.
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/// </summary>
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public class ExtractAccessTokenFromBodyForm : IOpenIddictValidationHandler<ProcessAuthenticationContext>
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{
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/// <summary>
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/// Gets the default descriptor definition assigned to this handler.
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/// </summary>
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public static OpenIddictValidationHandlerDescriptor Descriptor { get; }
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= OpenIddictValidationHandlerDescriptor.CreateBuilder<ProcessAuthenticationContext>()
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.AddFilter<RequireOwinRequest>()
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.UseSingletonHandler<ExtractAccessTokenFromBodyForm>()
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.SetOrder(ExtractAccessTokenFromAuthorizationHeader.Descriptor.Order + 1_000)
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.SetType(OpenIddictValidationHandlerType.BuiltIn)
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.Build();
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/// <inheritdoc/>
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public async ValueTask HandleAsync(ProcessAuthenticationContext context)
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{
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if (context is null)
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{
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throw new ArgumentNullException(nameof(context));
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}
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// If a token was already resolved, don't overwrite it.
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if (!string.IsNullOrEmpty(context.Token))
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{
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return;
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}
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// This handler only applies to OWIN requests. If The OWIN request cannot be resolved,
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// this may indicate that the request was incorrectly processed by another server stack.
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var request = context.Transaction.GetOwinRequest();
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if (request is null)
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{
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throw new InvalidOperationException(SR.GetResourceString(SR.ID0120));
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}
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if (string.IsNullOrEmpty(request.ContentType) ||
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!request.ContentType.StartsWith("application/x-www-form-urlencoded", StringComparison.OrdinalIgnoreCase))
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{
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return;
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}
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// Resolve the access token from the standard access_token form parameter.
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// See https://tools.ietf.org/html/rfc6750#section-2.2 for more information.
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var form = await request.ReadFormAsync();
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string token = form[Parameters.AccessToken];
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if (!string.IsNullOrEmpty(token))
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{
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context.Token = token;
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context.TokenType = TokenTypeHints.AccessToken;
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return;
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}
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}
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}
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/// <summary>
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/// Contains the logic responsible of extracting the access token from the standard access_token query parameter.
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/// Note: this handler is not used when the OpenID Connect request is not initially handled by OWIN.
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/// </summary>
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public class ExtractAccessTokenFromQueryString : IOpenIddictValidationHandler<ProcessAuthenticationContext>
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{
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/// <summary>
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/// Gets the default descriptor definition assigned to this handler.
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/// </summary>
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public static OpenIddictValidationHandlerDescriptor Descriptor { get; }
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= OpenIddictValidationHandlerDescriptor.CreateBuilder<ProcessAuthenticationContext>()
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.AddFilter<RequireOwinRequest>()
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.UseSingletonHandler<ExtractAccessTokenFromQueryString>()
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.SetOrder(ExtractAccessTokenFromBodyForm.Descriptor.Order + 1_000)
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.SetType(OpenIddictValidationHandlerType.BuiltIn)
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.Build();
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/// <inheritdoc/>
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public ValueTask HandleAsync(ProcessAuthenticationContext context)
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{
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if (context is null)
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{
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throw new ArgumentNullException(nameof(context));
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}
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// If a token was already resolved, don't overwrite it.
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if (!string.IsNullOrEmpty(context.Token))
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{
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return default;
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}
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// This handler only applies to OWIN requests. If The OWIN request cannot be resolved,
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// this may indicate that the request was incorrectly processed by another server stack.
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var request = context.Transaction.GetOwinRequest();
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if (request is null)
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{
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throw new InvalidOperationException(SR.GetResourceString(SR.ID0120));
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}
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// Resolve the access token from the standard access_token query parameter.
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// See https://tools.ietf.org/html/rfc6750#section-2.3 for more information.
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string token = request.Query[Parameters.AccessToken];
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if (!string.IsNullOrEmpty(token))
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{
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context.Token = token;
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context.TokenType = TokenTypeHints.AccessToken;
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return default;
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}
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return default;
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}
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}
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/// <summary>
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/// Contains the logic responsible of attaching the error details using the OWIN authentication properties.
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/// Note: this handler is not used when the OpenID Connect request is not initially handled by OWIN.
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/// </summary>
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public class AttachHostChallengeError : IOpenIddictValidationHandler<ProcessChallengeContext>
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{
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/// <summary>
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/// Gets the default descriptor definition assigned to this handler.
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/// </summary>
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public static OpenIddictValidationHandlerDescriptor Descriptor { get; }
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= OpenIddictValidationHandlerDescriptor.CreateBuilder<ProcessChallengeContext>()
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.AddFilter<RequireOwinRequest>()
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.UseSingletonHandler<AttachHostChallengeError>()
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.SetOrder(int.MinValue + 50_000)
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.SetType(OpenIddictValidationHandlerType.BuiltIn)
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.Build();
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/// <inheritdoc/>
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public ValueTask HandleAsync(ProcessChallengeContext context)
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{
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if (context is null)
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{
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throw new ArgumentNullException(nameof(context));
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}
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var properties = context.Transaction.GetProperty<AuthenticationProperties>(typeof(AuthenticationProperties).FullName!);
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if (properties is not null)
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{
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context.Response.Error = GetProperty(properties, Properties.Error);
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context.Response.ErrorDescription = GetProperty(properties, Properties.ErrorDescription);
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context.Response.ErrorUri = GetProperty(properties, Properties.ErrorUri);
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context.Response.Scope = GetProperty(properties, Properties.Scope);
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}
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return default;
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static string? GetProperty(AuthenticationProperties properties, string name)
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=> properties.Dictionary.TryGetValue(name, out string? value) ? value : null;
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}
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}
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/// <summary>
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/// Contains the logic responsible of attaching an appropriate HTTP status code.
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/// Note: this handler is not used when the OpenID Connect request is not initially handled by OWIN.
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/// </summary>
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public class AttachHttpResponseCode<TContext> : IOpenIddictValidationHandler<TContext> where TContext : BaseRequestContext
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{
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/// <summary>
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/// Gets the default descriptor definition assigned to this handler.
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/// </summary>
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public static OpenIddictValidationHandlerDescriptor Descriptor { get; }
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= OpenIddictValidationHandlerDescriptor.CreateBuilder<TContext>()
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.AddFilter<RequireOwinRequest>()
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.UseSingletonHandler<AttachHttpResponseCode<TContext>>()
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.SetOrder(100_000)
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.SetType(OpenIddictValidationHandlerType.BuiltIn)
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.Build();
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/// <inheritdoc/>
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public ValueTask HandleAsync(TContext context)
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{
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if (context is null)
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{
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throw new ArgumentNullException(nameof(context));
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}
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Debug.Assert(context.Transaction.Response is not null, SR.GetResourceString(SR.ID4007));
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// This handler only applies to OWIN requests. If The OWIN request cannot be resolved,
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// this may indicate that the request was incorrectly processed by another server stack.
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var response = context.Transaction.GetOwinRequest()?.Context.Response;
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if (response is null)
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{
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throw new InvalidOperationException(SR.GetResourceString(SR.ID0120));
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}
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response.StatusCode = context.Transaction.Response.Error switch
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{
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null => 200,
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Errors.InvalidToken or Errors.MissingToken => 401,
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Errors.InsufficientAccess or Errors.InsufficientScope => 403,
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_ => 400
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};
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return default;
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}
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}
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/// <summary>
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/// Contains the logic responsible of attaching the appropriate HTTP response cache headers.
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/// Note: this handler is not used when the OpenID Connect request is not initially handled by OWIN.
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/// </summary>
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public class AttachCacheControlHeader<TContext> : IOpenIddictValidationHandler<TContext> where TContext : BaseRequestContext
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{
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/// <summary>
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/// Gets the default descriptor definition assigned to this handler.
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/// </summary>
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public static OpenIddictValidationHandlerDescriptor Descriptor { get; }
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= OpenIddictValidationHandlerDescriptor.CreateBuilder<TContext>()
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.AddFilter<RequireOwinRequest>()
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.UseSingletonHandler<AttachCacheControlHeader<TContext>>()
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.SetOrder(AttachHttpResponseCode<TContext>.Descriptor.Order + 1_000)
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.SetType(OpenIddictValidationHandlerType.BuiltIn)
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.Build();
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/// <inheritdoc/>
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public ValueTask HandleAsync(TContext context)
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{
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if (context is null)
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{
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throw new ArgumentNullException(nameof(context));
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}
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// This handler only applies to OWIN requests. If The OWIN request cannot be resolved,
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// this may indicate that the request was incorrectly processed by another server stack.
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var response = context.Transaction.GetOwinRequest()?.Context.Response;
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if (response is null)
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{
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throw new InvalidOperationException(SR.GetResourceString(SR.ID0120));
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}
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// Prevent the response from being cached.
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response.Headers[Headers.CacheControl] = "no-store";
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response.Headers[Headers.Pragma] = "no-cache";
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response.Headers[Headers.Expires] = "Thu, 01 Jan 1970 00:00:00 GMT";
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return default;
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}
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}
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/// <summary>
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/// Contains the logic responsible of attaching errors details to the WWW-Authenticate header.
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/// Note: this handler is not used when the OpenID Connect request is not initially handled by OWIN.
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/// </summary>
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public class AttachWwwAuthenticateHeader<TContext> : IOpenIddictValidationHandler<TContext> where TContext : BaseRequestContext
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{
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private readonly IOptionsMonitor<OpenIddictValidationOwinOptions> _options;
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public AttachWwwAuthenticateHeader(IOptionsMonitor<OpenIddictValidationOwinOptions> options)
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=> _options = options;
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/// <summary>
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/// Gets the default descriptor definition assigned to this handler.
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/// </summary>
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public static OpenIddictValidationHandlerDescriptor Descriptor { get; }
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= OpenIddictValidationHandlerDescriptor.CreateBuilder<TContext>()
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.AddFilter<RequireOwinRequest>()
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.UseSingletonHandler<AttachWwwAuthenticateHeader<TContext>>()
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.SetOrder(AttachCacheControlHeader<TContext>.Descriptor.Order + 1_000)
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.SetType(OpenIddictValidationHandlerType.BuiltIn)
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.Build();
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/// <inheritdoc/>
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public ValueTask HandleAsync(TContext context)
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{
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if (context is null)
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{
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throw new ArgumentNullException(nameof(context));
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}
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Debug.Assert(context.Transaction.Response is not null, SR.GetResourceString(SR.ID4007));
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// This handler only applies to OWIN requests. If The OWIN request cannot be resolved,
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// this may indicate that the request was incorrectly processed by another server stack.
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var response = context.Transaction.GetOwinRequest()?.Context.Response;
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if (response is null)
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{
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throw new InvalidOperationException(SR.GetResourceString(SR.ID0120));
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}
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if (string.IsNullOrEmpty(context.Transaction.Response.Error))
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{
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return default;
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}
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var scheme = context.Transaction.Response.Error switch
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{
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Errors.InvalidToken or
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Errors.MissingToken or
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Errors.InsufficientAccess or
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Errors.InsufficientScope => Schemes.Bearer,
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_ => null
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};
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if (string.IsNullOrEmpty(scheme))
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{
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return default;
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}
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var parameters = new Dictionary<string, string>(StringComparer.Ordinal);
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// If a realm was configured in the options, attach it to the parameters.
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if (!string.IsNullOrEmpty(_options.CurrentValue.Realm))
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{
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parameters[Parameters.Realm] = _options.CurrentValue.Realm;
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}
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foreach (var parameter in context.Transaction.Response.GetParameters())
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{
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// Note: the error details are only included if the error was not caused by a missing token, as recommended
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// by the OAuth 2.0 bearer specification: https://tools.ietf.org/html/rfc6750#section-3.1.
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if (string.Equals(context.Transaction.Response.Error, Errors.MissingToken, StringComparison.Ordinal) &&
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(string.Equals(parameter.Key, Parameters.Error, StringComparison.Ordinal) ||
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string.Equals(parameter.Key, Parameters.ErrorDescription, StringComparison.Ordinal) ||
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string.Equals(parameter.Key, Parameters.ErrorUri, StringComparison.Ordinal)))
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{
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continue;
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}
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// Ignore values that can't be represented as unique strings.
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var value = (string?) parameter.Value;
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if (string.IsNullOrEmpty(value))
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{
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continue;
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}
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|
|
|
parameters[parameter.Key] = value;
|
|
}
|
|
|
|
var builder = new StringBuilder(scheme);
|
|
|
|
foreach (var parameter in parameters)
|
|
{
|
|
builder.Append(' ');
|
|
builder.Append(parameter.Key);
|
|
builder.Append('=');
|
|
builder.Append('"');
|
|
builder.Append(parameter.Value.Replace("\"", "\\\""));
|
|
builder.Append('"');
|
|
builder.Append(',');
|
|
}
|
|
|
|
// If the WWW-Authenticate header ends with a comma, remove it.
|
|
if (builder[builder.Length - 1] == ',')
|
|
{
|
|
builder.Remove(builder.Length - 1, 1);
|
|
}
|
|
|
|
response.Headers.Append(Headers.WwwAuthenticate, builder.ToString());
|
|
|
|
return default;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Contains the logic responsible of processing challenge responses that contain a WWW-Authenticate header.
|
|
/// Note: this handler is not used when the OpenID Connect request is not initially handled by OWIN.
|
|
/// </summary>
|
|
public class ProcessChallengeErrorResponse<TContext> : IOpenIddictValidationHandler<TContext> where TContext : BaseRequestContext
|
|
{
|
|
/// <summary>
|
|
/// Gets the default descriptor definition assigned to this handler.
|
|
/// </summary>
|
|
public static OpenIddictValidationHandlerDescriptor Descriptor { get; }
|
|
= OpenIddictValidationHandlerDescriptor.CreateBuilder<TContext>()
|
|
.AddFilter<RequireOwinRequest>()
|
|
.UseSingletonHandler<ProcessChallengeErrorResponse<TContext>>()
|
|
.SetOrder(AttachWwwAuthenticateHeader<TContext>.Descriptor.Order + 1_000)
|
|
.SetType(OpenIddictValidationHandlerType.BuiltIn)
|
|
.Build();
|
|
|
|
/// <inheritdoc/>
|
|
public ValueTask HandleAsync(TContext context)
|
|
{
|
|
if (context is null)
|
|
{
|
|
throw new ArgumentNullException(nameof(context));
|
|
}
|
|
|
|
// This handler only applies to OWIN requests. If The OWIN request cannot be resolved,
|
|
// this may indicate that the request was incorrectly processed by another server stack.
|
|
var response = context.Transaction.GetOwinRequest()?.Context.Response;
|
|
if (response is null)
|
|
{
|
|
throw new InvalidOperationException(SR.GetResourceString(SR.ID0120));
|
|
}
|
|
|
|
// If the response doesn't contain a WWW-Authenticate header, don't return an empty response.
|
|
if (!response.Headers.ContainsKey(Headers.WwwAuthenticate))
|
|
{
|
|
return default;
|
|
}
|
|
|
|
context.Logger.LogInformation(SR.GetResourceString(SR.ID6141), context.Transaction.Response);
|
|
context.HandleRequest();
|
|
|
|
return default;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Contains the logic responsible of processing OpenID Connect responses that must be returned as JSON.
|
|
/// Note: this handler is not used when the OpenID Connect request is not initially handled by OWIN.
|
|
/// </summary>
|
|
public class ProcessJsonResponse<TContext> : IOpenIddictValidationHandler<TContext> where TContext : BaseRequestContext
|
|
{
|
|
/// <summary>
|
|
/// Gets the default descriptor definition assigned to this handler.
|
|
/// </summary>
|
|
public static OpenIddictValidationHandlerDescriptor Descriptor { get; }
|
|
= OpenIddictValidationHandlerDescriptor.CreateBuilder<TContext>()
|
|
.AddFilter<RequireOwinRequest>()
|
|
.UseSingletonHandler<ProcessJsonResponse<TContext>>()
|
|
.SetOrder(ProcessChallengeErrorResponse<TContext>.Descriptor.Order + 1_000)
|
|
.SetType(OpenIddictValidationHandlerType.BuiltIn)
|
|
.Build();
|
|
|
|
/// <inheritdoc/>
|
|
public async ValueTask HandleAsync(TContext context)
|
|
{
|
|
if (context is null)
|
|
{
|
|
throw new ArgumentNullException(nameof(context));
|
|
}
|
|
|
|
Debug.Assert(context.Transaction.Response is not null, SR.GetResourceString(SR.ID4007));
|
|
|
|
// This handler only applies to OWIN requests. If The OWIN request cannot be resolved,
|
|
// this may indicate that the request was incorrectly processed by another server stack.
|
|
var response = context.Transaction.GetOwinRequest()?.Context.Response;
|
|
if (response is null)
|
|
{
|
|
throw new InvalidOperationException(SR.GetResourceString(SR.ID0120));
|
|
}
|
|
|
|
context.Logger.LogInformation(SR.GetResourceString(SR.ID6142), context.Transaction.Response);
|
|
|
|
using var stream = new MemoryStream();
|
|
using var writer = new Utf8JsonWriter(stream, new JsonWriterOptions
|
|
{
|
|
Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping,
|
|
Indented = true
|
|
});
|
|
|
|
context.Transaction.Response.WriteTo(writer);
|
|
writer.Flush();
|
|
|
|
response.ContentLength = stream.Length;
|
|
response.ContentType = "application/json;charset=UTF-8";
|
|
|
|
stream.Seek(offset: 0, loc: SeekOrigin.Begin);
|
|
await stream.CopyToAsync(response.Body, 4096, response.Context.Request.CallCancelled);
|
|
|
|
context.HandleRequest();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|