OAuth_Direct_Login

Magento REST API oauth direct login extension is designed to accept username and password as part of parm during authentication process and automatically login specified user account without redirecting to user login page.

You can download the following example to learn how to use the REST API oauth direct login module:
download the sample code

Sample usage(return oAuth Access Token and Access Secret):

getOauthAccessKeyAndSecret('oauth_consumer_key','oauth_consumer_secret','login_email','login_password','https://your-domain.com/');