org.cryptomator.ui.util.PasswordStrengthUtil.java Source code

Introduction

Here is the source code for org.cryptomator.ui.util.PasswordStrengthUtil.java

Source

/*******************************************************************************
 * Copyright (c) 2016 Sebastian Stenzel and others.
 * This file is licensed under the terms of the MIT license.
 * See the LICENSE.txt file for more info.
 *
 * Contributors:
 *     Jean-Nol Charon - initial API and implementation
 *******************************************************************************/
package org.cryptomator.ui.util;

import java.util.ArrayList;
import java.util.List;

import javax.inject.Inject;
import javax.inject.Singleton;

import org.apache.commons.lang3.StringUtils;
import org.cryptomator.ui.settings.Localization;

import com.nulabinc.zxcvbn.Zxcvbn;

import javafx.geometry.Insets;
import javafx.scene.layout.Background;
import javafx.scene.layout.BackgroundFill;
import javafx.scene.layout.CornerRadii;
import javafx.scene.paint.Color;

@Singleton
public class PasswordStrengthUtil {

    private final Zxcvbn zxcvbn;
    private final List<String> sanitizedInputs;
    private final Localization localization;

    @Inject
    public PasswordStrengthUtil(Localization localization) {
        this.localization = localization;
        this.zxcvbn = new Zxcvbn();
        this.sanitizedInputs = new ArrayList<>();
        this.sanitizedInputs.add("cryptomator");
    }

    public int computeRate(String password) {
        if (StringUtils.isEmpty(password)) {
            return -1;
        } else {
            return zxcvbn.measure(password, sanitizedInputs).getScore();
        }
    }

    public Color getStrengthColor(Number score) {
        switch (score.intValue()) {
        case 0:
            return Color.web("#e74c3c");
        case 1:
            return Color.web("#e67e22");
        case 2:
            return Color.web("#f1c40f");
        case 3:
            return Color.web("#40d47e");
        case 4:
            return Color.web("#27ae60");
        default:
            return Color.web("#ffffff", 0.5);
        }
    }

    public Background getBackgroundWithStrengthColor(Number score) {
        Color c = this.getStrengthColor(score);
        BackgroundFill fill = new BackgroundFill(c, CornerRadii.EMPTY, Insets.EMPTY);
        return new Background(fill);
    }

    public Background getBackgroundWithStrengthColor(Number score, Number threshold) {
        return score.intValue() >= threshold.intValue() ? getBackgroundWithStrengthColor(score)
                : getBackgroundWithStrengthColor(-1);
    }

    public String getStrengthDescription(Number score) {
        String key = "initialize.messageLabel.passwordStrength." + score.intValue();
        if (localization.containsKey(key)) {
            return localization.getString(key);
        } else {
            return "";
        }
    }

}