oauth facebook with grails accessing token - grails

Question

Its a grails project,
Facebook authentication is successful via oauth,
Now when it comes back to my controller, I want to get emailID of the logged in user,
Searched a lot, but did not find proper documentation,
I am using scribe and have following code in Config.groory
import org.scribe.builder.api.FacebookApi
oauth {
providers {
facebook {
api = FacebookApi
key = 'xxxx'
secret = 'yyyy'
callback = "http://my-domain-name-here:8080/TestOAuth2/dashBoard/facebooklogin"
successUri = "http://my-domain-name-here:8080/TestOAuth2/dashBoard/success"
}
}
}
Any help much appreciated.
Thanks.

Answer 1

Try this..,.
Config:
import org.scribe.builder.api.FacebookApi
...
oauth {
providers {
facebook {
api = FacebookApi
key = 'XXX'
secret = 'YYY'
scope = 'email,read_stream,publish_actions,user_birthday,publish_stream'
callback = "http://localhost:8080/appName/oauth/facebook/callback" //callback to oauth controller of oauth plugin
successUri = "http://localhost:8080/appName/myController/facebookSuccess"
failureUri = "http://localhost:8080/appName/myController/facebookFailure"
}
}
}
MyController:
def facebookSuccess() {
Token facebookAccessToken = (Token) session[oauthService.findSessionKeyForAccessToken('facebook')]
def facebookResource = oauthService.getFacebookResource(facebookAccessToken, "https://graph.facebook.com/me")
def facebookResponse = JSON.parse(facebookResource?.getBody())
log.info "Email = ${facebookResponse.email}"
...
}
You can get working example from my git repo. Grails Oauth Plugin Demo.

Answer 2

Email is not part of a Facebook public_profile. The only way to get the users e-mail address is to request extended permissions on the email field. You can do this by adding a scope to the oauth provider.
config.groovy
oauth {
providers {
facebook {
api = org.scribe.builder.api.FacebookApi
scope = 'email'
...
...
}
}
}
As an example of how to return email and various public_profile fields please see below.
Take Note of: getFacebookResource params e.g. https://graph.facebook.com/me?fields=id,name,verified,age_range,email"
import grails.converters.JSON
import org.scribe.model.Token
import grails.plugin.springsecurity.oauth.OAuthToken
class SpringSecurityOAuthController {
def oauthService
def onSuccess = {
// Validate the 'provider' URL. Any errors here are either misconfiguration
// or web crawlers (or malicious users).
if (!params.provider) {
renderError 400, "The Spring Security OAuth callback URL must include the 'provider' URL parameter."
return
}
def sessionKey = oauthService.findSessionKeyForAccessToken(params.provider)
if (!session[sessionKey]) {
renderError 500, "No OAuth token in the session for provider '${params.provider}'!"
return
}
// Create the relevant authentication token and attempt to log in.
OAuthToken oAuthToken = createAuthToken(params.provider, session[sessionKey])
Token facebookAccessToken = (Token) session[oauthService.findSessionKeyForAccessToken('facebook')]
def facebookResource = oauthService.getFacebookResource(facebookAccessToken , "https://graph.facebook.com/me?fields=id,name,verified,age_range,email")
def facebookResponse = JSON.parse(facebookResource?.getBody())
println facebookResponse
...
...
}
}
public_profile (Default)
A person's public profile refers to the following properties on the user object by default:
id cover
name
first_name
last_name
age_range
link
gender
locale
picture
timezone
updated_time
verified