OAuth2 Client in Node
oauth2_client_node is a node library providing the bases to implement an OAuth2 client. It features a connect middleware to ease the integration with any other components.
This project will follow the specification evolutions, so a branch for the draft 11 will soon be created.
oauth2_client_node is developed together with:
- oauth2_server_node, a connect middleware featuring an OAuth2 server bases.
- auth_server, an authentication and authorization server in node (using both oauth2_client_node and oauth2_server_node).
There are two examples of usage in the examples directory, one using Facebook as OAuth2 server, and one using auth_server as OAuth2 server.
To create an OAuth2 client, you will need to to create an oauth2_client_node middleware using oauth2_client.connector. This method returns a connect middleware and takes as arguments:
config: hash containing:
client, hash containing:
- base_url: The base URL of the OAuth2 client. Ex: http://domain.com:8080
- process_login_url: the URL where to the OAuth2 server must redirect the user when authenticated.
- login_url: the URL where the user must go to be redirected to OAuth2 server for authentication.
- logout_url: the URL where the user must go so that his session is cleared, and he is unlogged from client.
- default_redirection_url: default URL to redirect to after login / logout. Optional, default to '/'.
- crypt_key: string, encryption key used to crypt information contained in states. This is a symmetric key and must be kept secret.
- sign_key: string, signature key used to sign (HMAC) issued states. This is a symmetric key and must be kept secret.
default_server: which server to use for default login when user access login_url (ex: 'facebook.com').
servers: hash associating OAuth2 server ids (ex: "facebook.com") with a hash containing (for each):
- server_authorize_endpoint: full URL, OAuth2 server token endpoint (ex: "https://graph.facebook.com/oauth/authorize").
- server_token_endpoint: full url, where to check the token (ex: "https://graph.facebook.com/oauth/access_token").
- client_id: the client id as registered by this OAuth2 server.
- client_secret: shared secret between client and this OAuth2 server.
options: optional, hash associating OAuth2 server ids (ex: "facebook.com") with hash containing some options specific to the server. Not all servers have to be listed here, neither all options. Possible options:
- valid_grant: a function which will replace the default one to check the grant is ok. You might want to use this shortcut if you have a faster way of checking than requesting the OAuth2 server with an HTTP request.
- treat_access_token: a function which will replace the default one to do something with the access token. You will tipically use that function to set some info in session.
- transform_token_response: a function which will replace the default one to obtain a hash containing the access_token from the OAuth2 server reply. This method should be provided if the OAuth2 server we are requesting does not return JSON encoded data.
Once set and plug, the oauth2_client middleware will catch and answer requests aimed at the oauth2 client (login, logout and process_login endpoints).
Tested with node v0.4.
Projects using oauth2_client_node
A wiki page lists the projects using oauth2_client_node. Don't hesitate to edit it.