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JohnnyCrazyJohnnyCrazy
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First draft of SpotifyAPI.Web.Auth
1 parent 255bbd5 commit ff9d03f

36 files changed

Lines changed: 754 additions & 136 deletions

‎SpotifyAPI.Web.Auth/AuthException.cs‎

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namespace SpotifyAPI.Web.Auth
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{
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[System.Serializable]
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public class AuthException : System.Exception
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{
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public AuthException(string error, string state)
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{
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Error = error;
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State = state;
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}
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public AuthException(string message) : base(message) { }
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public AuthException(string message, System.Exception inner) : base(message, inner) { }
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protected AuthException(
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System.Runtime.Serialization.SerializationInfo info,
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System.Runtime.Serialization.StreamingContext context) : base(info, context) { }
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public string Error { get; set; }
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public string State { get; set; }
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}
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}

‎SpotifyAPI.Web.Auth/BrowserUtil.cs‎

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using System.Diagnostics;
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using System.Runtime.InteropServices;
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using System;
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namespace SpotifyAPI.Web.Auth
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{
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public static class BrowserUtil
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{
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public static void Open(Uri uri)
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{
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if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
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{
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var uriStr = uri.ToString().Replace("&", "^&");
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Process.Start(new ProcessStartInfo($"cmd", $"/c start {uriStr}"));
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}
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else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
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{
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Process.Start("xdg-open", uri.ToString());
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}
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else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
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{
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Process.Start("open", uri.ToString());
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}
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}
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}
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}

‎SpotifyAPI.Web.Auth/EmbedIOAuthServer.cs‎

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using System.Reflection;
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using System.Threading;
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using System.Web;
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using System.Globalization;
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using System.Text;
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using System;
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using System.Threading.Tasks;
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using EmbedIO;
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using EmbedIO.Actions;
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namespace SpotifyAPI.Web.Auth
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{
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public class EmbedIOAuthServer : IAuthServer
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{
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public event Func<object, AuthorizationCodeResponse, Task> AuthorizationCodeReceived;
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public event Func<object, ImplictGrantResponse, Task> ImplictGrantReceived;
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private const string CallbackPath = "/";
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private const string DefaultResourcePath = "SpotifyAPI.Web.Auth.Resources.DefaultHTML";
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private CancellationTokenSource _cancelTokenSource;
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private readonly WebServer _webServer;
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public EmbedIOAuthServer(Uri baseUri, int port, string resourcePath = DefaultResourcePath)
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{
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Ensure.ArgumentNotNull(baseUri, nameof(baseUri));
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BaseUri = baseUri;
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Port = port;
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_webServer = new WebServer(port)
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.WithModule(new ActionModule("/", HttpVerbs.Post, (ctx) =>
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{
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var query = ctx.Request.QueryString;
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if (query["error"] != null)
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{
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throw new AuthException(query["error"], query["state"]);
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}
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var requestType = query.Get("request_type");
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if (requestType == "token")
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{
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ImplictGrantReceived?.Invoke(this, new ImplictGrantResponse(
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query["access_token"], query["token_type"], int.Parse(query["expires_in"])
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)
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{
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State = query["state"]
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});
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}
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if (requestType == "code")
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{
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AuthorizationCodeReceived?.Invoke(this, new AuthorizationCodeResponse(query["code"])
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{
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State = query["state"]
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});
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}
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return ctx.SendStringAsync("OK", "text/plain", Encoding.UTF8);
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}))
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.WithEmbeddedResources("/", Assembly.GetExecutingAssembly(), resourcePath);
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}
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public Uri BaseUri { get; }
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public Uri RedirectUri { get => new Uri(BaseUri, CallbackPath); }
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public int Port { get; }
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public Task Start()
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{
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_cancelTokenSource = new CancellationTokenSource();
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_webServer.Start(_cancelTokenSource.Token);
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return Task.CompletedTask;
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}
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public Task Stop()
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{
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_cancelTokenSource.Cancel();
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return Task.CompletedTask;
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}
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public Uri BuildLoginUri(LoginRequest request)
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{
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Ensure.ArgumentNotNull(request, nameof(request));
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var callbackUri = new Uri(BaseUri, CallbackPath);
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StringBuilder builder = new StringBuilder(SpotifyUrls.Authorize.ToString());
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builder.Append($"?client_id={request.ClientId}");
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builder.Append($"&response_type={request.ResponseTypeParam.ToString().ToLower()}");
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builder.Append($"&redirect_uri={HttpUtility.UrlEncode(callbackUri.ToString())}");
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if (!string.IsNullOrEmpty(request.State))
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{
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builder.Append($"&state={HttpUtility.UrlEncode(request.State)}");
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}
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if (request.Scope != null)
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{
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builder.Append($"&scope={HttpUtility.UrlEncode(string.Join(" ", request.Scope))}");
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}
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if (request.ShowDialog != null)
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{
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builder.Append($"&show_dialog={request.ShowDialog.Value}");
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}
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return new Uri(builder.ToString());
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}
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public void Dispose()
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{
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Dispose(true);
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GC.SuppressFinalize(this);
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}
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protected virtual void Dispose(bool disposing)
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{
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if (disposing)
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{
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_webServer?.Dispose();
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}
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}
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}
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}

‎SpotifyAPI.Web.Auth/IAuthServer.cs‎

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using System;
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using System.Threading.Tasks;
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namespace SpotifyAPI.Web.Auth
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{
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public interface IAuthServer : IDisposable
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{
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event Func<object, AuthorizationCodeResponse, Task> AuthorizationCodeReceived;
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event Func<object, ImplictGrantResponse, Task> ImplictGrantReceived;
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Task Start();
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Task Stop();
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Uri BuildLoginUri(LoginRequest request);
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Uri RedirectUri { get; }
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}
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}

‎SpotifyAPI.Web.Auth/Models/Request/LoginRequest.cs‎

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using System.Collections.Generic;
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namespace SpotifyAPI.Web.Auth
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{
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public class LoginRequest
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{
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public LoginRequest(string clientId, ResponseType responseType)
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{
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Ensure.ArgumentNotNullOrEmptyString(clientId, nameof(clientId));
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ClientId = clientId;
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ResponseTypeParam = responseType;
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}
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public ResponseType ResponseTypeParam { get; }
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public string ClientId { get; }
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public string State { get; set; }
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public ICollection<string> Scope { get; set; }
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public bool? ShowDialog { get; set; }
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public enum ResponseType
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{
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Code,
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Token
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}
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}
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}

‎SpotifyAPI.Web.Auth/Models/Response/AuthorizationCodeResponse.cs‎

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namespace SpotifyAPI.Web.Auth
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{
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public class AuthorizationCodeResponse
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{
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public AuthorizationCodeResponse(string code)
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{
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Ensure.ArgumentNotNullOrEmptyString(code, nameof(code));
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Code = code;
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}
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public string Code { get; set; }
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public string State { get; set; }
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}
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}

‎SpotifyAPI.Web.Auth/Models/Response/ImplicitGrantResponse.cs‎

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using System;
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namespace SpotifyAPI.Web.Auth
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{
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public class ImplictGrantResponse
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{
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public ImplictGrantResponse(string accessToken, string tokenType, int expiresIn)
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{
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Ensure.ArgumentNotNullOrEmptyString(accessToken, nameof(accessToken));
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Ensure.ArgumentNotNullOrEmptyString(tokenType, nameof(tokenType));
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AccessToken = accessToken;
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TokenType = tokenType;
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ExpiresIn = expiresIn;
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}
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public string AccessToken { get; set; }
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public string TokenType { get; set; }
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public int ExpiresIn { get; set; }
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public string State { get; set; }
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/// <summary>
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/// Auto-Initalized to UTC Now
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/// </summary>
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/// <value></value>
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public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
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public bool IsExpired { get => CreatedAt.AddSeconds(ExpiresIn) <= DateTime.UtcNow; }
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}
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}

‎SpotifyAPI.Web.Auth/Resources/AuthorizationCodeAuth/css/bulma.min.css‎

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‎SpotifyAPI.Web.Auth/Resources/AuthorizationCodeAuth/images/1.png‎

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‎SpotifyAPI.Web.Auth/Resources/AuthorizationCodeAuth/images/2.png‎

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