服务器端只有手动登录流向与asp.net身份网页API外部登录画布Facebook的应用程序 [英] Server side only manual login flow to facebook in a canvas app with asp.net identity web api external logins

问题描述

我下面这个教程<一个href=\"http://bitoftech.net/2014/08/11/asp-net-web-api-2-external-logins-social-logins-facebook-google-angularjs-app/\" rel=\"nofollow\">http://bitoftech.net/2014/08/11/asp-net-web-api-2-external-logins-social-logins-facebook-google-angularjs-app/.

第一步Facebook登录流量点击一个Facebook登录按钮，链接到这个网址：

The first step to facebook login flow is to click a facebook login button which links to this url:

<$c$c>http://ngauthenticationapi.azurewebsites.net/api/Account/ExternalLogin?provider=Facebook&response_type=token&client_id=ngAuthApp& REDIRECT_URI = HTTP：/ \\
/ngauthenticationweb.azurewebsites.net/authcomplete.html

在我的情况下，我使用的是Facebook的帆布的应用程序，嵌入里面Facebook。所以，我没有登录按钮。相反，我应该怎么显示/做
在我的index.html发起的Facebook应用程序中的登录流程。

In my case I am using a facebook canvas app, that is embedded inside facebook. So I don't have a login button. Instead what should I display/do in my index.html that initiates login flow within facebook application.

我不使用Facebook的SDK。我只会做这个服务器端，我设置的一切教程以下，但我不知道这是否是可用的withi \\
N A画布应用程序。

I am not using Facebook SDK. I will do this server side only, I've setup everything following the tutorial, but I don't know if that is usable withi\ n a canvas app.

Facebook的文档说，在的https://developers.facebook.com/docs/facebook-login/manually-build-a-login-flow/v2.4:

Facebook docs says in https://developers.facebook.com/docs/facebook-login/manually-build-a-login-flow/v2.4:

您的应用程序必须发起一个重定向到一个端点，将显示登录对话框

Your app must initiate a redirect to an endpoint which will display the login dialog

<$c$c>https://www.facebook.com/dialog/oauth?client_id={app-id}&redirect_uri={redirect-uri}

所以在我的情况下，我应该将用户重定向到上面一个由Facebook登录按钮链接该URL，会是这样行吗？

So in my case should I redirect users to that url above that is linked by a facebook login button, would that be ok?

推荐答案

有一个详细的登录Facebook上的文档。在这里引用它的某些重要的部分：

There is a detailed login on Facebook doc. To quote some important parts of it here:

由于你的游戏是在iframe中加载，返回一个302重定向
  用户登录对话框将不会成功。相反，你必须
  靶的顶部（或_top）帧重定向，这将导致亲
  窗口重定向到登录对话框URL。

Because your game is loaded in an iframe, returning a 302 to redirect the user to the Login Dialog will be unsuccessful. Instead you must target the top (or _top) frame for redirect, which causes the parent window to redirect to the Login Dialog URL.

和也：

当使用非JavaScript SDK重定向方法，它们将被发送
  回传给登录对话框中REDIRECT_URI。在这种情况下，我们
  建议您设置REDIRECT_URI是你游戏的画布URL。
  因为signed_request将访问令牌被张贴沿
  这个时候，你的应用程序现在可以从签名的请求采集令牌
  如上

When using the non-JavaScript SDK redirect method, they will be sent back to the redirect_uri passed to the Login Dialog. In this case, we recommend you set this redirect_uri to be the Canvas URL of your game. Because the signed_request will be POSTed along with an access token this time, your app can now capture the token from the signed request as above.

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