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{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE OverloadedStrings #-}
module Sproxy.Application.OAuth2.LinkedIn
( provider
) where
import Control.Applicative (empty)
import Control.Exception (Exception, throwIO)
import Data.Aeson
(FromJSON, Value(Object), (.:), decode, parseJSON)
import Data.ByteString.Lazy (ByteString)
import Data.Monoid ((<>))
import Data.Text (Text)
import Data.Text.Encoding (encodeUtf8)
import Data.Typeable (Typeable)
import qualified Network.HTTP.Conduit as H
import Network.HTTP.Types.URI (urlEncode)
import Sproxy.Application.Cookie
(newUser, setFamilyName, setGivenName)
import Sproxy.Application.OAuth2.Common
(AccessTokenBody(accessToken), OAuth2Client(..), OAuth2Provider)
provider :: OAuth2Provider
provider (client_id, client_secret) =
OAuth2Client
{ oauth2Description = "LinkedIn"
, oauth2AuthorizeURL =
\state redirect_uri ->
"https://www.linkedin.com/oauth/v2/authorization" <>
"?scope=r_basicprofile%20r_emailaddress" <>
"&client_id=" <>
urlEncode True client_id <>
"&redirect_uri=" <>
urlEncode True redirect_uri <>
"&response_type=code" <>
"&state=" <>
urlEncode True state
, oauth2Authenticate =
\code redirect_uri -> do
let treq =
H.urlEncodedBody
[ ("client_id", client_id)
, ("client_secret", client_secret)
, ("code", code)
, ("grant_type", "authorization_code")
, ("redirect_uri", redirect_uri)
] $
H.parseRequest_
"POST https://www.linkedin.com/oauth/v2/accessToken"
mgr <- H.newManager H.tlsManagerSettings
tresp <- H.httpLbs treq mgr
case decode $ H.responseBody tresp of
Nothing -> throwIO $ LinkedInException tresp
Just atResp -> do
let ureq =
(H.parseRequest_
"https://api.linkedin.com/v1/people/\
\~:(email-address,first-name,last-name)?format=json")
{ H.requestHeaders =
[ ( "Authorization"
, "Bearer " <> encodeUtf8 (accessToken atResp))
]
}
uresp <- H.httpLbs ureq mgr
case decode $ H.responseBody uresp of
Nothing -> throwIO $ LinkedInException uresp
Just u ->
return $
setFamilyName (lastName u) $
setGivenName (firstName u) $ newUser (emailAddress u)
}
data LinkedInException =
LinkedInException (H.Response ByteString)
deriving (Show, Typeable)
instance Exception LinkedInException
data LinkedInUserInfo = LinkedInUserInfo
{ emailAddress :: Text
, firstName :: Text
, lastName :: Text
} deriving (Eq, Show)
instance FromJSON LinkedInUserInfo where
parseJSON (Object v) =
LinkedInUserInfo <$> v .: "emailAddress" <*> v .: "firstName" <*>
v .: "lastName"
parseJSON _ = empty
|
