Flask oauth2 redirect

If you only want to find out about how to do user Authentication with Google and Python, feel free to stop there. Getting Google authentication and authorization set up was quite a confusing process; there are lots of scattered, confusing, obsolete, or generally misleading docs on how to integrate Python with Google Drive. For example:.

Copy these, and store them somewhere safe. This contains all the code that we need to authenticate with Google via the Google Login API and fetch information about the current user. This will be used for encrypting the cookie in the Flask session. Start Flask via either run. If everything is working correctly, you should see something that looks like the following:.

Otherwise, leave a comment below. You should see a screen that looks like:. It should look something like:. In order to get a session which includes the Google Drive scope that you added earlier, you need to log out and log in again. Currently our app only supports uploading of files to Googe Drive, but no way to get a list of previously uploaded files, or viewing individual files. In app. The fields parameter took me a while to figure out.

This iterates over the files that we specified as part of flask. Start up the app via run. Among other things:. If you like this blog post, have any feedback, or any questions, please get in touchor leave a comment below. Each month, I send out my latest newsletter and articles. Subscribe to stay in the loop. No spam, ever.The only changes are the imports:. If you are testing the provider and the client locally, do not make them start listening on the same address because they will override the session of each other leading to strange bugs.

You can find these values by registering your application with the remote application you want to connect with.

Now that the application is created one can start using the OAuth system. One thing is missing: the tokengetter. OAuth uses a token and a secret to figure out who is connecting to the remote application. If the token does not exist, the function must return Noneand otherwise return a tuple in the form token, secret. The function might also be passed a token parameter.

This is user defined and can be used to indicate another token. Imagine for instance you want to support user and application tokens or different tokens for the same user. The name of the token can be passed to to the request function. To sign in with Twitter or link a user account with a remote Twitter user, simply call into authorize and pass it the URL that the user should be redirected back to.

For example:. We store the token and the associated secret in the session so that the tokengetter can return it. Additionally, we also store the Twitter username that was sent back to us so that we can later display it to the user.

In larger applications it is recommended to store satellite information in a database instead to ease debugging and more easily handle additional information associated with the user.

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For Facebook the flow is very similar to Twitter or other OAuth systems but there is a small difference. Furthermore the callback is mandatory for the call to authorize and has to match the base URL that was specified in the Facebook application control panel. For development you can set it to localhost Now the user is signed in, but you probably want to use OAuth to call protected remote API methods and not just sign in.

For that, the remote application object provides a request method that can request information from an OAuth protected resource. Additionally there are shortcuts like get or post to request data with a certain HTTP method. Flask-OAuthlib will do its best to send data encoded in the right format to the server and to decode it when it comes back.

Incoming data is encoded based on the mimetype the server sent and is stored in the data attribute. For outgoing data a default of 'urlencode' is assumed. When a different format is needed, one can specify it with the format parameter.

Login with Google and Facebook account in Python/Django -All-Auth Social Login Authentication - API

The following formats are supported:. Unknown incoming data is stored as a string. Find the OAuth1 client example at twitter. Find the OAuth2 client example at github. When creating an open source project, we need to keep our consumer key and consumer secret secret. Client of Flask-OAuthlib has a mechanism for you to lazy load your configuration from your Flask config object:.

You can put all the configuration in app.In this tutorial, we are going to look at how Flask developers can make use of Flask-Dance to implement OAuth in a Flask-based application. Flask-Dance makes it possible for developers to allow users to log into a web application via their GitHub account, Twitter account or even Dropbox account. Although it does not guarantee complete protection from cyber attacks, making use of Flask-Dance to integrate OAuth in a web application makes it difficult for attackers to sniff users' credentials.

This tutorial was developed on Linux Debian. Users of other systems should know how to configure their own environment. OAuth Open Authorization is not an authentication framework as some developers perceive it to be. OAuth 2. For instance, if a user wants to sign up or log in to a web application, the user can choose to do so via their Facebook or GitHub account assuming developers have made it possible.

The screenshot below shows the login page of Pusher. In this case, the user can choose to log in with their GitHub or Google account.

Instead of users' handing their credentials over to third-party clients, OAuth allows users to give access right to third-party clients by providing tokens instead of password. Flask-Dance is an approved extension that allows developers to build Flask-based apps to allow users to authenticate via OAuth protocol.

Since Flask is micro-framework, extensions such as Flask-Dance allows developers to extend the functionality of Flask. Without Flask-Dance and other extensions with similar function, it becomes difficult to integrate OAuth in Flask application.

We need to register an OAuth app with GitHub in order to allow users to access the newsroom application by connecting to their GitHub account. First and foremost, we need to sign in to our GitHub account. Then click on your profile picture, navigate to settings and click on Developer settings. In the application name section, type the name of the web application so that users can recognize it. A callback URL directs the user back to the original site from an external service.

In this context, when a user makes an attempt to access current news, the user is directed to sign in with GitHub account and redirected back to the homepage after successful authorization. Before we start to install Python and Flask packages as well as files and folders for our project, we need to create a virtual environment for our project. We will use the Virtualenv tool to do so.

flask oauth2 redirect

The main essence of creating a virtual environment is to work with specific packages that we need for our Flask project and the Python main directory from our Python-Flask project.

Assuming you have already installed pip on your Debian machine, use the following command to install virtualenv:. Next use the command mkdir to create a directory to store or hold our virtual environment.

The above command creates a newsroom directory where we will install packages such as feedparser for our Flask project.Released: Mar 29, Fully featured framework for fast, easy and documented API development with Flask.

View statistics for this project via Libraries. Tags flask, restplus, rest, api, swagger, openapi. It provides a coherent collection of decorators and tools to describe your API and expose its documentation properly using Swagger. The documentation is hosted on Read the Docs. Mar 29, Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Warning Some features may not work without JavaScript. Please try enabling it if you encounter problems. Search PyPI Search. Latest version Released: Mar 29, Navigation Project description Release history Download files.

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Maintainers saibot Compatibility Flask-RestPlus requires Python 2. Quick start With Flask-Restplus, you only import the api instance to route and document your endpoints. Documentation The documentation is hosted on Read the Docs. Changelog Current Ensure basePath is always a path.This documentation covers OAuth 1.

Looking for OAuth providers? Create a registry with OAuth object:. The common use case for OAuth is authentication, e. Please read Web OAuth Clients at first. Changed in version v0. For earlier version, developers can import the Flask client with:. Authlib Flask OAuth registry can load the configuration from Flask app.

Every key value pair in. They can be configured in your Flask App configuration. If you register your remote app as oauth. However in this way, there are chances your temporary credential will be exposed. Our OAuth registry provides a simple way to store temporary credentials in a cache system.

When initializing OAuthyou can pass an cache instance:. A cache instance MUST have methods:. In this case, the routes for authorization should look like:.

There is no request in accessing OAuth resources either. That is the fantasy of Flask. Read the documentation in Web OAuth Clients. When register with openid scope, the built-in Flask OAuth client will handle everything automatically:. Flask OAuth 1. Create a registry with OAuth object: from authlib. For earlier version, developers can import the Flask client with: from authlib. New in version v0.An OAuth2 server concerns how to grant the authorization and how to protect the resource. Register an OAuth provider:.

A user, or resource owner, is usually the registered user on your site. You need to design your own user model. A client is the app which wants to use the resource of a user. It is suggested that the client is registered by a user on your site, but it is not required. The value of the scope parameter is expressed as a list of space- delimited, case-sensitive strings. A grant token is created in the authorization flow, and will be destroyed when the authorization is finished. In this case, it would be better to store the data in a cache, which leads to better performance.

A bearer token is the final token that could be used by the client.

flask oauth2 redirect

There are other token types, but bearer token is widely used. Flask-OAuthlib only comes with a bearer token. Before implementing the authorize and token handlers, we need to set up some getters and setters to communicate with the database.

A client getter is required. It tells which client is sending the requests, creating the getter with a decorator:. Grant getter and setter are required. They are used in the authorization flow, implemented with decorators:. You should implement it yourself. The request object is defined by OAuthlib. You can get at least this much information:. Token getter and setter are required.

flask oauth2 redirect

They are used in the authorization flow and the accessing resource flow. They are implemented with decorators as follows:. The getter will receive two parameters. The setter receives token and request parameters.This guide shows example code for a web service that connects to a reddit account. For details on each step, see the full OAuth2 login docs. For a simpler use case, see the script app quick start guide. Go to your app preferences.

Click the "Create app" or "Create another app" button. Fill out the form like so:. Note : For an actual app, you'd want to set this to you a URL that your user could access rather than localhost.

Hit the "create app" button. Make note of the client ID and client secret. For the rest of this page, it will be assumed that:. The client IDs, secrets, tokens and passwords used here are, obviously, fake and invalid. The following Python example relies on the Flask web framework and the Python requests library. For the sake of the example, configuration values are hardcoded into the python script and imports are done in the functions used.

Running the above code serves a simple text page with a URL that sends the user to reddit to request that this app be able to access their reddit identity. The Flask server needs to be configured to respond to that URL:. The Flask app now handles reddit's redirect back into the app, but doesn't quite do anything yet. The next step is to take that code and get an OAuth access token with it.

Add Google Oauth2 login in your flask web app

The code is only good once! Alright, take a deep breath. The hard part is over. Now you have a token, and your app can use it to make requests to the reddit API on behalf of that user until it expires. If it expires, the user will need to re-authorize your app. Alternatively, if you need to have ongoing access on behalf of the user, you could use a refresh token. That flow is beyond the scope of this example.


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