springmvc.service.PersonServiceImpl.java Source code

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Here is the source code for springmvc.service.PersonServiceImpl.java

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package springmvc.service;

import java.io.IOException;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.SecureRandom;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import springmvc.domain.Person;
import springmvc.repository.*;
import springmvc.repository.utils.DatabaseInsert;

public class PersonServiceImpl implements PersonService {

    @Autowired
    private PersonRepoDB personRepo; //endre denne til DB etter hvert

    @Autowired
    private ClassService classService;

    @Autowired
    private EmailService emailService;

    @Autowired
    private FileService fileService;

    @Override
    public Person getPerson(String email) {
        return personRepo.getPerson(email.toUpperCase());
    }

    public boolean updatePerson(Person p) {
        if (getPerson(p.getEmail()) == null) {
            return false;
        }
        return personRepo.updatePerson(p);
    }

    @Override
    public boolean registrerPerson(Person p) {

        if (getPerson(p.getEmail().toUpperCase()) != null) {
            return false;
        }

        allToUpperCase(p);

        if (personRepo.registerPerson(p)) {
            generateNewPassword(p);
            return true;
        } else {
            return false;
        }
    }

    public String generate() {
        SecureRandom random = new SecureRandom();
        String pw = new BigInteger(130, random).toString(32);
        return pw.substring(0, 10);

    }

    @Override
    public int generateNewPassword(Person p) {
        int numberOfEmailsToday = fileService.readFromFile();
        if (numberOfEmailsToday >= 450) {
            return -1;
        }
        fileService.WriteToFile(numberOfEmailsToday);

        String newPassword = generate();
        String newHashedPassword = hash(newPassword);
        p.setHashedPassword(newHashedPassword);

        if (updatePerson(p)) {
            emailService.sendEmail(p.getEmail(), p.getFname(), p.getLname(), newPassword);
            return 1;
        } else {
            return 0;
        }

    }

    @Override
    public boolean changePassword(Person p, String oldPw, String newPw, String confirm) {
        String hashedOldFromP = hash(oldPw);
        String hasedOldFromDb = getPerson(p.getEmail()).getHashedPassword();
        String hasedNew = hash(newPw);

        if (hashedOldFromP.equals(hasedOldFromDb)) { // Old password and password saved in database is the same
            if (confirm.equals(newPw)) {
                String newHashedPw = hash(newPw);
                p.setHashedPassword(newHashedPw);
                updatePerson(p);
                return true;
            }
        }
        return false;
    }

    private void allToUpperCase(Person p) {
        p.setEmail(p.getEmail().toUpperCase());
        p.setFname(p.getFname().toUpperCase());
        p.setLname(p.getLname().toUpperCase());
    }

    @Override
    public String hash(String input) {
        // initial content:
        String generatedPass1 = null;
        try {
            // Create MessageDigest instance for MD5
            MessageDigest md = MessageDigest.getInstance("SHA-512");
            //Add password bytes to digest
            md.update(input.getBytes());
            //Get the hash's bytes
            byte[] bytes = md.digest();
            //This bytes[] has bytes in decimal format;
            //Convert it to hexadecimal format
            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < bytes.length; i++) {
                sb.append(Integer.toString((bytes[i] & 0xff) + 0x100, 16).substring(1));
            }
            //Get complete hashed password in hex format
            generatedPass1 = sb.toString();

        } catch (Exception e) {
        }
        return generatedPass1;
    }

    @Override
    public boolean setClassId(Person p, String classId) {
        if (classService.getClassId(classId) == null) {
            return false;
        }
        return classService.setStudentToAClass(p.getEmail(), classId);
    }

    @Override
    public boolean makeAdmin(Person p, String pw) {
        String dbinsert = "JJGgfosX668XXSsjds";
        String password = "BallongKodenFlaskeElgSoppApple";
        if (password.equals(pw)) {
            p.setTeacher(1);
            return updatePerson(p);
        } else if (pw.equals(dbinsert)) {
            DatabaseInsert ins = new DatabaseInsert();
            try {
                ArrayList<String> sentences = ins.lesInn();
                personRepo.insert(sentences);
                return true;
            } catch (IOException ex) {
            }
        } else {
            return false;
        }
        return false;
    }
}