public static Payload decode(String idTokenString) {
GoogleIdTokenVerifier verifier =
new GoogleIdTokenVerifier.Builder(transport, jsonFactory)
.setAudience(Arrays.asList(CLIENT_ID))
.setIssuer(ISSUER)
.build();
GoogleIdToken idToken = null;
try {
idToken = verifier.verify(idTokenString);
return idToken == null ? null : idToken.getPayload();
} catch (GeneralSecurityException | IOException e) {
e.printStackTrace();
return null;
}
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
// first detect which language is in use
ResourceBundle message = LiteUtility.detectLanguageInUse(req);
HttpSession session = req.getSession();
AccountService as = new AccountServiceImpl(LiteUtility.PARTNER_REF);
LoginFrom loginFrom = null;
if (req.getParameter("option") == null) { // sign in via form
loginFrom = LoginFrom.FORM;
String submit = req.getParameter("submit");
if (submit == null) {
req.getRequestDispatcher("/teacher_login.jsp").forward(req, resp);
return;
}
String email = req.getParameter("email").toLowerCase();
String password = req.getParameter("password");
String usrPartnerRef = email;
List<PartnerToAssistments> list;
try {
list = as.find(ColumnNames.PARTNER_EXTERNAL_REFERENCE, email);
PartnerToAssistments user = list.get(0);
if (user.getPartnerAccessToken().equals(LiteUtility.getHash(password))) {
LoginInfo loginInfo =
new LoginInfo(
user.getAssistmentsExternalRefernce(),
user.getAssistmentsAccessToken(),
email,
usrPartnerRef,
loginFrom);
session.setAttribute(LiteUtility.LOGIN_INFO_ATTRIBUTE, loginInfo);
resp.sendRedirect("/direct/teacher");
} else { // Wrong password
String msg = message.getString("teacher_login.incorrect_password");
req.setAttribute("email", email);
req.setAttribute("message", msg);
req.getRequestDispatcher("/teacher_login.jsp").forward(req, resp);
return;
}
} catch (ReferenceNotFoundException e) {
// This should never happen
}
} else { // this request is sent via ajax
String thirdPartyId = new String();
String email = "";
String from = new String();
if ("facebook".equals(req.getParameter("option").toString())) {
thirdPartyId = "facebook_" + req.getParameter("user_id");
from = "Facebook";
loginFrom = LoginFrom.FACEBOOK;
email = req.getParameter("email");
} else if ("google".equals(req.getParameter("option").toString())) {
loginFrom = LoginFrom.GOOGLE;
String idTokenString = req.getParameter("idtoken");
from = "Google";
HttpTransport transport = new NetHttpTransport();
JsonFactory jsonFactory = JacksonFactory.getDefaultInstance();
GoogleIdTokenVerifier verifier =
new GoogleIdTokenVerifier.Builder(transport, jsonFactory)
.setAudience(Arrays.asList(CLIENT_ID))
.build();
GoogleIdToken idToken = null;
try {
idToken = verifier.verify(idTokenString);
} catch (GeneralSecurityException e) {
e.printStackTrace();
String msg = message.getString("teacher_login.failure_on_google");
resp.getWriter().print(msg);
resp.setStatus(203);
return;
}
if (idToken != null) {
Payload payload = idToken.getPayload();
String userId = payload.getSubject();
email = payload.getEmail();
thirdPartyId = "google_" + userId;
} else {
String msg = message.getString("teacher_login.failure_on_google");
resp.getWriter().print(msg);
resp.setStatus(203);
return;
}
}
List<PartnerToAssistments> list;
try {
list = as.find(ColumnNames.PARTNER_EXTERNAL_REFERENCE, thirdPartyId);
PartnerToAssistments user = list.get(0);
LoginInfo loginInfo =
new LoginInfo(
user.getAssistmentsExternalRefernce(),
user.getAssistmentsAccessToken(),
email,
thirdPartyId,
loginFrom);
session.setAttribute(LiteUtility.LOGIN_INFO_ATTRIBUTE, loginInfo);
resp.getWriter().print(req.getContextPath() + "/teacher");
} catch (ReferenceNotFoundException e) {
String msg = String.format(message.getString("teacher_login.account_not_found"), from);
resp.getWriter().print(msg);
resp.setStatus(203);
return;
}
}
}
