réactive oidc, définitivement.
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using System;
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using System.Linq;
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using System.Threading.Tasks;
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using AspNet.Security.OpenIdConnect.Extensions;
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using AspNet.Security.OpenIdConnect.Server;
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using Microsoft.Data.Entity;
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using Microsoft.Extensions.DependencyInjection;
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using Microsoft.Extensions.Logging;
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using Yavsc.Models;
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namespace Yavsc.Providers {
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public sealed class AuthorizationProvider : OpenIdConnectServerProvider {
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private ILogger _logger;
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public AuthorizationProvider(ILoggerFactory loggerFactory) {
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_logger = loggerFactory.CreateLogger<AuthorizationProvider>();
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}
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public override Task MatchEndpoint(MatchEndpointContext context) {
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// Note: by default, OpenIdConnectServerHandler only handles authorization requests made to the authorization endpoint.
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// This context handler uses a more relaxed policy that allows extracting authorization requests received at
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// /connect/authorize/accept and /connect/authorize/deny (see AuthorizationController.cs for more information).
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if (context.Options.AuthorizationEndpointPath.HasValue &&
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context.Request.Path.StartsWithSegments(context.Options.AuthorizationEndpointPath)) {
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context.MatchesAuthorizationEndpoint();
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}
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return Task.FromResult<object>(null);
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}
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public override async Task ValidateAuthorizationRequest(ValidateAuthorizationRequestContext context) {
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// Note: the OpenID Connect server middleware supports the authorization code, implicit and hybrid flows
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// but this authorization provider only accepts response_type=code authorization/authentication requests.
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// You may consider relaxing it to support the implicit or hybrid flows. In this case, consider adding
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// checks rejecting implicit/hybrid authorization requests when the client is a confidential application.
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if (!context.Request.IsAuthorizationCodeFlow()) {
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context.Rejected(
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error: OpenIdConnectConstants.Errors.UnsupportedResponseType,
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description: "Only the authorization code flow is supported by this authorization server");
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return;
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}
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var database = context.HttpContext.RequestServices.GetRequiredService<ApplicationDbContext>();
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_logger.LogInformation($"Searching fo app id {context.ClientId}");
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// Retrieve the application details corresponding to the requested client_id.
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var application = await (from entity in database.Applications
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where entity.ApplicationID == context.ClientId
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select entity).SingleOrDefaultAsync(context.HttpContext.RequestAborted);
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if (application == null) {
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context.Rejected(
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error: OpenIdConnectConstants.Errors.InvalidClient,
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description: "Application not found in the database: ensure that your client_id is correct");
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return;
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}
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if (!string.IsNullOrEmpty(context.Request.RedirectUri) &&
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!string.Equals(context.Request.RedirectUri, application.RedirectUri, StringComparison.Ordinal)) {
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context.Rejected(
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error: OpenIdConnectConstants.Errors.InvalidClient,
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description: "Invalid redirect_uri");
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return;
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}
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context.Validated();
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}
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public override async Task ValidateTokenRequest(ValidateTokenRequestContext context) {
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// Note: the OpenID Connect server middleware supports authorization code, refresh token, client credentials
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// and resource owner password credentials grant types but this authorization provider uses a safer policy
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// rejecting the last two ones. You may consider relaxing it to support the ROPC or client credentials grant types.
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if (!context.Request.IsAuthorizationCodeGrantType() && !context.Request.IsRefreshTokenGrantType()) {
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context.Rejected(
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error: OpenIdConnectConstants.Errors.UnsupportedGrantType,
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description: "Only authorization code and refresh token grant types " +
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"are accepted by this authorization server");
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return;
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}
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// Note: client authentication is not mandatory for non-confidential client applications like mobile apps
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// (except when using the client credentials grant type) but this authorization server uses a safer policy
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// that makes client authentication mandatory and returns an error if client_id or client_secret is missing.
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// You may consider relaxing it to support the resource owner password credentials grant type
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// with JavaScript or desktop applications, where client credentials cannot be safely stored.
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// In this case, call context.Skip() to inform the server middleware the client is not trusted.
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if (string.IsNullOrEmpty(context.Request.ClientId) || string.IsNullOrEmpty(context.Request.ClientSecret)) {
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context.Rejected(
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error: OpenIdConnectConstants.Errors.InvalidRequest,
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description: "Missing credentials: ensure that your credentials were correctly " +
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"flowed in the request body or in the authorization header");
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return;
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}
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var database = context.HttpContext.RequestServices.GetRequiredService<ApplicationDbContext>();
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// Retrieve the application details corresponding to the requested client_id.
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var application = await (from entity in database.Applications
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where entity.ApplicationID == context.ClientId
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select entity).SingleOrDefaultAsync(context.HttpContext.RequestAborted);
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if (application == null) {
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context.Rejected(
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error: OpenIdConnectConstants.Errors.InvalidClient,
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description: "Application not found in the database: ensure that your client_id is correct");
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return;
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}
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if (!string.Equals(context.Request.ClientSecret, application.Secret, StringComparison.Ordinal)) {
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context.Rejected(
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error: OpenIdConnectConstants.Errors.InvalidClient,
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description: "Invalid credentials: ensure that you specified a correct client_secret");
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return;
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}
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context.Validated();
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}
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}
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}
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