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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.Net.Http;
using System.Text;
using Microsoft.AspNetCore.DataProtection;
using Microsoft.Extensions.Options;
using Microsoft.IdentityModel.Protocols;
using Microsoft.IdentityModel.Protocols.OpenIdConnect;
namespace Microsoft.AspNetCore.Authentication.OpenIdConnect;
/// <summary>
/// Used to setup defaults for all <see cref="OpenIdConnectOptions"/>.
/// </summary>
public class OpenIdConnectPostConfigureOptions : IPostConfigureOptions<OpenIdConnectOptions>
{
private readonly IDataProtectionProvider _dp;
/// <summary>
/// Initializes a new instance of <see cref="OpenIdConnectPostConfigureOptions"/>.
/// </summary>
/// <param name="dataProtection">The <see cref="IDataProtectionProvider"/>.</param>
public OpenIdConnectPostConfigureOptions(IDataProtectionProvider dataProtection)
{
_dp = dataProtection;
}
/// <summary>
/// Invoked to post configure a TOptions instance.
/// </summary>
/// <param name="name">The name of the options instance being configured.</param>
/// <param name="options">The options instance to configure.</param>
public void PostConfigure(string? name, OpenIdConnectOptions options)
{
ArgumentNullException.ThrowIfNull(name);
options.DataProtectionProvider = options.DataProtectionProvider ?? _dp;
if (string.IsNullOrEmpty(options.SignOutScheme))
{
options.SignOutScheme = options.SignInScheme;
}
if (options.StateDataFormat == null)
{
var dataProtector = options.DataProtectionProvider.CreateProtector(
typeof(OpenIdConnectHandler).FullName!, name, "v1");
options.StateDataFormat = new PropertiesDataFormat(dataProtector);
}
if (options.StringDataFormat == null)
{
var dataProtector = options.DataProtectionProvider.CreateProtector(
typeof(OpenIdConnectHandler).FullName!,
typeof(string).FullName!,
name,
"v1");
options.StringDataFormat = new SecureDataFormat<string>(new StringSerializer(), dataProtector);
}
if (string.IsNullOrEmpty(options.TokenValidationParameters.ValidAudience) && !string.IsNullOrEmpty(options.ClientId))
{
options.TokenValidationParameters.ValidAudience = options.ClientId;
}
if (options.Backchannel == null)
{
options.Backchannel = new HttpClient(options.BackchannelHttpHandler ?? new HttpClientHandler());
options.Backchannel.DefaultRequestHeaders.UserAgent.ParseAdd("Microsoft ASP.NET Core OpenIdConnect handler");
options.Backchannel.Timeout = options.BackchannelTimeout;
options.Backchannel.MaxResponseContentBufferSize = 1024 * 1024 * 10; // 10 MB
}
if (options.ConfigurationManager == null)
{
if (options.Configuration != null)
{
options.ConfigurationManager = new StaticConfigurationManager<OpenIdConnectConfiguration>(options.Configuration);
}
else if (!(string.IsNullOrEmpty(options.MetadataAddress) && string.IsNullOrEmpty(options.Authority)))
{
if (string.IsNullOrEmpty(options.MetadataAddress) && !string.IsNullOrEmpty(options.Authority))
{
options.MetadataAddress = options.Authority;
if (!options.MetadataAddress.EndsWith('/'))
{
options.MetadataAddress += "/";
}
options.MetadataAddress += ".well-known/openid-configuration";
}
if (options.RequireHttpsMetadata && !(options.MetadataAddress?.StartsWith("https://", StringComparison.OrdinalIgnoreCase) ?? false))
{
throw new InvalidOperationException("The MetadataAddress or Authority must use HTTPS unless disabled for development by setting RequireHttpsMetadata=false.");
}
options.ConfigurationManager = new ConfigurationManager<OpenIdConnectConfiguration>(options.MetadataAddress, new OpenIdConnectConfigurationRetriever(),
new HttpDocumentRetriever(options.Backchannel) { RequireHttps = options.RequireHttpsMetadata })
{
RefreshInterval = options.RefreshInterval,
AutomaticRefreshInterval = options.AutomaticRefreshInterval,
};
}
}
}
private sealed class StringSerializer : IDataSerializer<string>
{
public string Deserialize(byte[] data)
{
return Encoding.UTF8.GetString(data);
}
public byte[] Serialize(string model)
{
return Encoding.UTF8.GetBytes(model);
}
}
}
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