Source: utils/hashUtils.js

/*Canopy - The next generation of stoner streaming software
Copyright (C) 2024-2025 Rainbownapkin and the TTN Community

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.*/

//Config
const config = require('../../config.json');

//Node Imports
const crypto = require('node:crypto');

//NPM Imports
const bcrypt = require('bcrypt');

/**
 * Sitewide function for hashing passwords
 * @param {String} pass - Password to hash
 * @returns {String} Hashed/Salted password
 */
module.exports.hashPassword = function(pass){
    const salt = bcrypt.genSaltSync();
    return bcrypt.hashSync(pass, salt);
}

/**
 * Sitewide password for authenticating/comparing passwords agianst hashes
 * @param {String} pass - Plaintext Password
 * @param {String} hash - Salty Hash
 * @returns {Boolean} True if authentication success
 */
module.exports.comparePassword = function(pass, hash){
    return bcrypt.compareSync(pass, hash);
}

/**
 * Site-wide IP hashing/salting function
 * 
 * Provides a basic level of privacy by only logging salted hashes of IP's
 * @param {String} ip - IP to hash
 * @returns {String} Hashed/Salted IP Adress
 */
module.exports.hashIP = function(ip){
    //Create hash object
    const hashObj = crypto.createHash('md5');

    //add IP and salt to the hash
    hashObj.update(`${ip}${config.ipSecret}`);

    //return the IP hash as a string
    return hashObj.digest('hex');
}