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Arke server
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lib/arke_server/oauth/providers/facebook.ex
defmodule ArkeServer.OAuth.Provider.Facebook do
use ArkeServer.OAuth.Core
@private_oauth_key :arke_server_oauth
def info(conn) do
token_data = conn.private[@private_oauth_key]
%UserInfo{
first_name: token_data["first_name"],
last_name: token_data["last_name"],
email: token_data["email"]
}
end
def uid(conn) do
conn.private[@private_oauth_key]["id"]
end
def handle_cleanup(conn), do: put_private(conn, @private_oauth_key, nil)
def handle_request(%Plug.Conn{query_params: %{"token" => token}} = conn) do
client_id = System.get_env("FACEBOOK_CLIENT_ID", nil)
client_secret = System.get_env("FACEBOOK_CLIENT_SECRET", nil)
query_params = %{"input_token" => token, "access_token" => "#{client_id}|#{client_secret}"}
case HTTPoison.get("https://graph.facebook.com/v14.0/debug_token", [], params: query_params) do
{:ok, %{status_code: 200, body: body}} ->
body = Poison.decode!(body)
case Map.get(body["data"], "app_id") == client_id and
Map.get(body["data"], "is_valid", false) in ["true", "True", "1", true] do
false ->
Plug.Conn.assign(
conn,
:arke_server_oauth_failure,
Error.create(:auth, "invalid token")
)
true ->
get_user_data(conn, token)
end
_ ->
Plug.Conn.assign(
conn,
:arke_server_oauth_failure,
Error.create(:auth, "invalid token")
)
end
end
def handle_request(conn) do
{:error, msg} = Error.create(:auth, "token not found")
Plug.Conn.assign(
conn,
:arke_server_oauth_failure,
msg
)
end
defp get_user_data(conn, token) do
query_params = %{"fields" => "id,first_name,last_name,email", "access_token" => token}
case HTTPoison.get("https://graph.facebook.com/v14.0/me", [], params: query_params) do
{:ok, %{status_code: 200, body: body}} ->
body = Poison.decode!(body)
put_private(conn, @private_oauth_key, body)
_ ->
Plug.Conn.assign(
conn,
:arke_server_oauth_failure,
Error.create(:auth, "invalid token")
)
end
end
end