2018-09-04 13:39:07 +01:00
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using System;
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2018-08-24 13:10:13 +01:00
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using System.Collections.Generic;
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2018-09-21 13:45:14 +01:00
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using System.Net.Http;
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2018-08-24 13:10:13 +01:00
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using System.Text;
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using System.Threading.Tasks;
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using Newtonsoft.Json;
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using SpotifyAPI.Web.Enums;
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using SpotifyAPI.Web.Models;
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using Unosquare.Labs.EmbedIO;
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using Unosquare.Labs.EmbedIO.Constants;
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using Unosquare.Labs.EmbedIO.Modules;
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namespace SpotifyAPI.Web.Auth
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{
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2020-03-09 19:47:39 +00:00
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public class AuthorizationCodeAuth : SpotifyAuthServer<AuthorizationCode>
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{
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public string SecretId { get; set; }
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public ProxyConfig ProxyConfig { get; set; }
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public AuthorizationCodeAuth(string redirectUri, string serverUri, Scope scope = Scope.None, string state = "") : base("code", "AuthorizationCodeAuth", redirectUri, serverUri, scope, state)
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{ }
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public AuthorizationCodeAuth(string clientId, string secretId, string redirectUri, string serverUri, Scope scope = Scope.None, string state = "") : this(redirectUri, serverUri, scope, state)
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2018-08-24 13:10:13 +01:00
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{
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2020-03-09 19:47:39 +00:00
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ClientId = clientId;
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SecretId = secretId;
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2018-08-24 13:10:13 +01:00
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}
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2020-03-09 19:47:39 +00:00
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private bool ShouldRegisterNewApp()
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2018-08-24 13:10:13 +01:00
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{
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2020-03-09 19:47:39 +00:00
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return string.IsNullOrEmpty(SecretId) || string.IsNullOrEmpty(ClientId);
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}
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2018-08-24 13:10:13 +01:00
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2020-03-09 19:47:39 +00:00
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public override string GetUri()
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{
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return ShouldRegisterNewApp() ? $"{RedirectUri}/start.html#{State}" : base.GetUri();
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2018-08-24 13:10:13 +01:00
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}
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2020-03-09 19:47:39 +00:00
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protected override void AdaptWebServer(WebServer webServer)
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2018-08-24 13:10:13 +01:00
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{
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2020-03-09 19:47:39 +00:00
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webServer.Module<WebApiModule>().RegisterController<AuthorizationCodeAuthController>();
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2018-08-24 13:10:13 +01:00
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}
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2020-03-09 19:47:39 +00:00
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private string GetAuthHeader() => $"Basic {Convert.ToBase64String(Encoding.UTF8.GetBytes(ClientId + ":" + SecretId))}";
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public async Task<Token> RefreshToken(string refreshToken)
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{
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List<KeyValuePair<string, string>> args = new List<KeyValuePair<string, string>>
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{
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new KeyValuePair<string, string>("grant_type", "refresh_token"),
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new KeyValuePair<string, string>("refresh_token", refreshToken)
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};
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return await GetToken(args);
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}
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public async Task<Token> ExchangeCode(string code)
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{
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List<KeyValuePair<string, string>> args = new List<KeyValuePair<string, string>>
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{
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new KeyValuePair<string, string>("grant_type", "authorization_code"),
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new KeyValuePair<string, string>("code", code),
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new KeyValuePair<string, string>("redirect_uri", RedirectUri)
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};
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return await GetToken(args);
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}
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private async Task<Token> GetToken(IEnumerable<KeyValuePair<string, string>> args)
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{
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HttpClientHandler handler = ProxyConfig.CreateClientHandler(ProxyConfig);
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HttpClient client = new HttpClient(handler);
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client.DefaultRequestHeaders.Add("Authorization", GetAuthHeader());
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HttpContent content = new FormUrlEncodedContent(args);
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HttpResponseMessage resp = await client.PostAsync("https://accounts.spotify.com/api/token", content);
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string msg = await resp.Content.ReadAsStringAsync();
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return JsonConvert.DeserializeObject<Token>(msg);
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}
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}
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public class AuthorizationCode
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{
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public string Code { get; set; }
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public string Error { get; set; }
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}
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internal class AuthorizationCodeAuthController : WebApiController
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{
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[WebApiHandler(HttpVerbs.Get, "/")]
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public Task<bool> GetEmpty()
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{
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string state = Request.QueryString["state"];
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AuthorizationCodeAuth.Instances.TryGetValue(state, out SpotifyAuthServer<AuthorizationCode> auth);
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string code = null;
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string error = Request.QueryString["error"];
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if (error == null)
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code = Request.QueryString["code"];
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Task.Factory.StartNew(() => auth?.TriggerAuth(new AuthorizationCode
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{
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Code = code,
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Error = error
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}));
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return HttpContext.HtmlResponseAsync("<html><script type=\"text/javascript\">window.close();</script>OK - This window can be closed now</html>");
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}
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[WebApiHandler(HttpVerbs.Post, "/")]
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public async Task<bool> PostValues()
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{
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Dictionary<string, object> formParams = await HttpContext.RequestFormDataDictionaryAsync();
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string state = (string) formParams["state"];
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AuthorizationCodeAuth.Instances.TryGetValue(state, out SpotifyAuthServer<AuthorizationCode> authServer);
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AuthorizationCodeAuth auth = (AuthorizationCodeAuth) authServer;
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auth.ClientId = (string) formParams["clientId"];
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auth.SecretId = (string) formParams["secretId"];
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string uri = auth.GetUri();
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return HttpContext.Redirect(uri, false);
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}
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public AuthorizationCodeAuthController(IHttpContext context) : base(context)
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{ }
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}
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}
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