public void processRequest(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
// PrintWriter out = resp.getWriter();
// resp.setContentType("text/plain");
String signedReq = req.getParameter("signed_request");
if (signedReq == null) {
System.out.println("ERROR: Unable to retrieve signed_request parameter");
} else {
int count = 0;
String payload = null;
// The parameter contains encoded signature and payload separated by Ô.Õ
StringTokenizer st = new StringTokenizer(signedReq, ".");
// Retrieve payload (Note: encoded signature is used for internal verification and it is
// optional)
while (st.hasMoreTokens()) {
if (count == 1) {
payload = st.nextToken();
break;
} else st.nextToken();
count++;
}
// Initialize Base64 decoder
Base64 dec = new Base64();
// Replace special character in payload as indicated by FB
payload = payload.replace("-", "+").replace("_", "/").trim();
// Decode payload
try {
byte[] decodedPayload = dec.decode(payload.getBytes());
payload = new String(decodedPayload, "UTF8");
// out.println("payload");
// out.println(payload);
} catch (IOException e) {
System.out.println("ERROR: Unable to perform Base64 Decode");
}
// JSON Decode - payload
try {
UserAccount acct = new UserAccount();
JSONObject payloadObject = new JSONObject(payload);
String facebookId = "" + payloadObject.get("user_id"); // Retrieve user ID
String oauthToken = "" + payloadObject.get("oauth_token"); // Retrieve oauth token
acct.setFacebookId(facebookId);
acct.setOauthToken(oauthToken);
String regData = "" + payloadObject.get("registration");
JSONObject payloadObject2 = new JSONObject(regData);
String name = "" + payloadObject2.get("name");
String email = "" + payloadObject2.get("email");
String language = "" + payloadObject2.get("language");
String method = "" + payloadObject2.get("method");
String phone = "" + payloadObject2.get("phone");
String loc = "" + payloadObject2.get("location");
String send1 = "" + payloadObject2.get("send-1");
String send2 = "" + payloadObject2.get("send-2");
String send3 = "" + payloadObject2.get("send-3");
acct.setName(name);
acct.setEmail(email);
acct.setLanguage(language);
acct.setMethod(method);
acct.setPhone(phone);
acct.setSend1(send1);
acct.setSend2(send2);
acct.setSend3(send3);
JSONObject payloadObject3 = new JSONObject(loc);
String locD = "" + payloadObject3.get("name");
acct.setLocation(locD);
acct.setCreated(getCurrentDateTime());
DataAct da = new DataAct();
da.insertNewUser(acct);
} catch (JSONException e) {
e.printStackTrace();
// out.println("JSON Decode - payload Error");
} catch (ServiceException e) {
// TODO Auto-generated catch block
// Tout.println("ServiceException Error");
e.printStackTrace();
} catch (Exception e) {
// TODO Auto-generated catch block
// Tout.println("Exception Error");
e.printStackTrace();
}
}
resp.sendRedirect("index.html");
}
