Tracfone CLI details fetcher

README.md

Tracfone Remaining minutes applet

Fetches the remaining minutes and other information via command line

Usage

make PHONE_NUMBER=2065550199

Makefile

all:
	@javac $(shell find -name "*.java")
	@java TracfoneInfo $(PHONE_NUMBER)

TracfoneInfo.java

import java.util.List;
import java.net.URL;
import java.net.HttpURLConnection;
import java.io.InputStreamReader;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.PrintStream;
import java.io.FileOutputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;

public class TracfoneInfo {
    public static void main(String[] args) throws Exception {
        if (args.length != 1) {
            System.out.println("Phone number missing");
            return;
        }
        System.out.println(getAllInfo(args[0]));

        String html = saveHTML("https://www.tracfone.com/direct/controller.block",
                getCookies("https://www.tracfone.com/direct/CheckBalance") + ";TFOpinionlab=||");
        saveString("output.html", html);
        if (html.contains("<strong>Service End Date :</strong>")) {
            String expiration = html.split("<strong>Service End Date :</strong>")[1].split("</p>")[0];
            System.out.println("Expiration: " + expiration);
        }
    }

    public static HttpURLConnection connect(String url) throws Exception {
        HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();
        conn.setUseCaches(false);
        return conn;
    }

    private static String getTransactionID(String phoneNumber) throws Exception {
        HttpURLConnection conn = connect("https://www.fastactportal.com/static/balanceReq");
        appendData(conn, "min=" + phoneNumber);

        String html = getResponse(conn);
        if (html.contains("transactionId: ")) {
            return html.split("transactionId: ")[1].split(" ")[0].trim();
        }
        return "";
    }

    public static int daysBetween(Date date1, Date date2) {
        return (int) ((date2.getTime() - date1.getTime()) / (1000 * 60 * 60 * 24));
    }

    public static HashMap<String, Object> getAllInfo(String phoneNumber) throws Exception {
        String cookieString = getCookies("https://www.fastactportal.com/static/balanceReq");

        HttpURLConnection conn = connect("https://www.fastactportal.com/static/balanceP");
        conn.setRequestProperty("Cookie", cookieString);
        appendData(conn, "min=" + phoneNumber + "&transactionId=" + getTransactionID(phoneNumber));
        String raw = getResponse(conn);

        HashMap<String, Object> response = new HashMap<String, Object>();
        boolean success = raw.contains("NOK");
        response.put("success", success);
        if (!success)
            return response;

        String[] parts = raw.split(",");
        response.put("minutes", Integer.parseInt(parts[1]));
        response.put("messages", Integer.parseInt(parts[2]));
        response.put("kb", Integer.parseInt(parts[3]));

        Date expiration = new SimpleDateFormat("MM-dd-yyy").parse(parts[4]);
        response.put("expiration", expiration);
        response.put("daysleft", daysBetween(new Date(), expiration));
        return response;
    }

    public static void appendData(HttpURLConnection conn, String data) throws Exception {
        conn.setDoOutput(true);
        DataOutputStream wr = new DataOutputStream(conn.getOutputStream());
        wr.writeBytes(data);
        wr.close();
    }

    public static String getResponse(HttpURLConnection conn) throws Exception {
        BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream()));
        StringBuilder response = new StringBuilder();
        String line;
        while ((line = rd.readLine()) != null) {
            response.append(line);
            response.append('\r');
        }
        rd.close();
        return response.toString();
    }

    public static void saveString(String filename, String data) {
        try (PrintStream out = new PrintStream(new FileOutputStream(filename))) {
            out.print(data);
        } catch (Exception ex) {
        }
    }

    public static String getCookies(String url) throws Exception {
        String cookies = "";
        HttpURLConnection conn = connect(url);
        List<String> fullCookies = conn.getHeaderFields().get("Set-Cookie");
        for (int i = 0; i < fullCookies.size(); i++) {
            cookies += fullCookies.get(i).split(";")[0] + ";";
        }
        return cookies.substring(0, cookies.length() - 1);
    }

    public static String saveHTML(String url, String cookies) throws Exception {
        HttpURLConnection conn = connect(url);
        conn.setRequestProperty("Cookie", cookies);

        appendData(conn,
                "__blockname=direct.balance.landing&__returnTo=&facebookemail=&emailSelected=&input_phone=3302121759&input_esn=5464&emailModal=&passwordModal=&balance_inquiry_button_selection=submit");

        return getResponse(conn);
    }
}