經過客戶端的後臺服務器,與「服務提供商」的認證服務器進行認證。html
一、用戶訪問客戶端,後者將前者導向認證服務器。
二、用戶選擇是否給予客戶端受權。
三、假設用戶給予受權,認證服務器首先生成一個受權碼,並返回給用戶,認證服務器將用戶導向客戶端事先指定的"重定向URI"(redirection URI),同時附上一個受權碼。
四、客戶端收到受權碼,附上早先的"重定向URI",向認證服務器申請令牌。這一步是在客戶端的後臺的服務器上完成的,對用戶不可見。
五、認證服務器覈對了受權碼和重定向URI,確認無誤後,向客戶端發送訪問令牌(access token)和更新令牌(refresh token)。
六、Client拿着access token去訪問Resource資源api
圖 1 (網上搜到的受權碼工做流程圖說明)服務器
以前看上邊的流程圖,看了不下10遍,仍是搞不懂,這個圖真心畫的很差理解!asp.net
咱們一步步來,AuthorizationServer與ResourceServer仍是用以前的項目ide
public ActionResult Index() { ViewBag.AccessToken = Request.Form["AccessToken"] ?? ""; ViewBag.RefreshToken = Request.Form["RefreshToken"] ?? ""; ViewBag.Action = ""; ViewBag.ResourceResponse = ""; var authorizationServerUri = new Uri("http://localhost:8270/"); var authorizationServer = new AuthorizationServerDescription { AuthorizationEndpoint = new Uri(authorizationServerUri, "OAuth/Authorize"), TokenEndpoint = new Uri(authorizationServerUri, "OAuth/Token") }; // 刷新AccessToken var client = new WebServerClient(authorizationServer, "123456", "abcdef"); if (string.IsNullOrEmpty(ViewBag.AccessToken)) { var authorizationState = client.ProcessUserAuthorization(Request); if (authorizationState != null) { ViewBag.AccessToken = authorizationState.AccessToken; ViewBag.RefreshToken = authorizationState.RefreshToken; ViewBag.Action = Request.Path; } } // 受權申請 if (!string.IsNullOrEmpty(Request.Form.Get("btnRequestAuthorize"))) { var grantRequest = client.PrepareRequestUserAuthorization(new[] { "scopes1", "scopes2" }); grantRequest.Send(HttpContext); Response.End(); } // 申請資源 if (!string.IsNullOrEmpty(Request.Form.Get("btnRequestResource"))) { var resourceServerUri = new Uri("http://localhost:8001/"); var resourceRequest = new HttpClient(client.CreateAuthorizingHandler(ViewBag.AccessToken)); ViewBag.ResourceResponse = resourceRequest.GetStringAsync(new Uri(resourceServerUri, "api/Values")).Result; } return View(); }
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Authorization Code Grant Client</title> </head> <body> <form id="form1" action="@ViewBag.Action" method="POST"> <div> <input id="AccessToken" name="AccessToken" value="@ViewBag.AccessToken" type="hidden" /> <input id="Authorize" name="btnRequestAuthorize" value="向認證服務器索要受權" type="submit" /> <input id="Resource" name="btnRequestResource" value="訪問資源(Resource)" type="submit" /> </div> <div>@ViewBag.ResourceResponse</div> </form> </body> </html>
運行項目 post
點擊「向認證服務索要受權」,根據HomeController.cs文件的設置,頁面預計會跳轉到"http://localhost:8270/OAuth/Authorize"url
因此咱們須要在認證服務中新增處理受權碼模式的處理邏輯spa
在項目AuthorizationServer中新增OAuthController.cs、Authorize.cshtml.net
public class OAuthController : Controller { public ActionResult Authorize() { if (Response.StatusCode != 200) { return View("AuthorizeError"); } var authentication = HttpContext.GetOwinContext().Authentication; var ticket = authentication.AuthenticateAsync("Application").Result; var identity = ticket != null ? ticket.Identity : null; if (identity == null) { authentication.Challenge("Application"); return new HttpUnauthorizedResult(); //用戶登陸憑證失效就報401錯誤,而且跳轉至AccountController中的Login中 } ViewBag.IdentityName = identity.Name; ViewBag.Scopes = (Request.QueryString.Get("scope") ?? "").Split(' '); if (Request.HttpMethod == "POST") {
// 點擊btnGrant就確認受權,返回token等信息 if (!string.IsNullOrEmpty(Request.Form.Get("btnGrant"))) { identity = new ClaimsIdentity(identity.Claims, "Bearer", identity.NameClaimType, identity.RoleClaimType); foreach (var scope in ViewBag.Scopes) { identity.AddClaim(new Claim("urn:oauth:scope", scope)); } authentication.SignIn(identity); } if (!string.IsNullOrEmpty(Request.Form.Get("btnOtherLogin"))) { authentication.SignOut("Application"); authentication.Challenge("Application"); return new HttpUnauthorizedResult(); } } return View(); } }
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Authorize</title> </head> <body> <h1>認證頁面</h1> <form method="POST"> <p>登陸用戶:@ViewBag.IdentityName</p> <p>第三方應用須要你給他開放如下權限</p> <ul> @foreach (var scope in ViewBag.Scopes) { <li>@scope</li> } </ul> <p> <input type="submit" name="btnGrant" value="確認受權" /> <input type="submit" name="btnOtherLogin" value="以不一樣用戶登陸" /> </p> </form> </body> </html>
public class AccountController : Controller { public ActionResult Login() { var authentication = HttpContext.GetOwinContext().Authentication; if (Request.HttpMethod == "POST") { // 默認用戶登陸成功
// 生產環境須要單獨整合第三方登陸信息 var username = Request.Form["username"]; authentication.SignIn( new AuthenticationProperties { IsPersistent = true }, new ClaimsIdentity( new[] { new Claim(ClaimsIdentity.DefaultNameClaimType, username) }, "Application")); } return View(); } public ActionResult Logout() { return View(); } }
http://localhost:8270/OAuth/Authorize?client_id=123456&redirect_uri=http%3A%2F%2Flocalhost%3A4825%2F&state=IUKeWFTR1HKi4hlzKOOPgw&scope=scopes1%20scopes2&response_type=code3d
7.1 client_id爲客戶端ID,即以前咱們在AuthorizationCodeGrant項目設置的clientID
7.2 redirect_uri、state爲以前登陸時就肯定的值
7.3 scope爲用戶肯定受權的範圍
7.4 response_type=code,即指定爲受權碼模式
此時url有變化:http://localhost:4825/?code=efab38fc30c741a198b20663ec60869a36c6b25ff21f4c9986bcb9c9ae8d20eb&state=tjB9jXhNiHvIr4Ko9VhEkw
注意:這一步會會默認獲取Token
徹底可以對上;
url中的code即認證服務返回的受權碼,以後Client請求Token會用這個code來交換
這個就是受權碼模式的特點的地方了
自此,整個受權碼模式已經完畢了哦