59 lines
1.7 KiB
JavaScript
59 lines
1.7 KiB
JavaScript
// Helper functions for accessing the Facebook Graph API.
|
|
var https = require('https');
|
|
var Parse = require('parse/node').Parse;
|
|
|
|
// Returns a promise that fulfills iff this user id is valid.
|
|
function validateAuthData(authData) {
|
|
return graphRequest('me?fields=id&access_token=' + authData.access_token)
|
|
.then((data) => {
|
|
if (data && data.id == authData.id) {
|
|
return;
|
|
}
|
|
throw new Parse.Error(
|
|
Parse.Error.OBJECT_NOT_FOUND,
|
|
'Facebook auth is invalid for this user.');
|
|
});
|
|
}
|
|
|
|
// Returns a promise that fulfills iff this app id is valid.
|
|
function validateAppId(appIds, authData) {
|
|
var access_token = authData.access_token;
|
|
if (!appIds.length) {
|
|
throw new Parse.Error(
|
|
Parse.Error.OBJECT_NOT_FOUND,
|
|
'Facebook auth is not configured.');
|
|
}
|
|
return graphRequest('app?access_token=' + access_token)
|
|
.then((data) => {
|
|
if (data && appIds.indexOf(data.id) != -1) {
|
|
return;
|
|
}
|
|
throw new Parse.Error(
|
|
Parse.Error.OBJECT_NOT_FOUND,
|
|
'Facebook auth is invalid for this user.');
|
|
});
|
|
}
|
|
|
|
// A promisey wrapper for FB graph requests.
|
|
function graphRequest(path) {
|
|
return new Promise(function(resolve, reject) {
|
|
https.get('https://graph.facebook.com/v2.5/' + path, function(res) {
|
|
var data = '';
|
|
res.on('data', function(chunk) {
|
|
data += chunk;
|
|
});
|
|
res.on('end', function() {
|
|
data = JSON.parse(data);
|
|
resolve(data);
|
|
});
|
|
}).on('error', function(e) {
|
|
reject('Failed to validate this access token with Facebook.');
|
|
});
|
|
});
|
|
}
|
|
|
|
module.exports = {
|
|
validateAppId: validateAppId,
|
|
validateAuthData: validateAuthData
|
|
};
|