kajvan
72 lines
2.7 KiB
JavaScript
72 lines
2.7 KiB
JavaScript
class PassPolicy {
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constructor(options) {
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// Define default options and merge with provided options
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const defaultOptions = {
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minLength: 6,
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maxLength: 256,
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minLower: 1,
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minUpper: 1,
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minNum: 1,
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minSpecial: 0,
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specialChars: "!@#$%^&*()_+~`|}{[]:;?><,./-=",
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};
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this.options = { ...defaultOptions, ...options };
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}
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validate(password) {
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const { minLength, maxLength, minLower, minUpper, minNum, minSpecial, specialChars } = this.options;
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if (password.length < minLength || password.length > maxLength) {
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return { valid: false, message: "Password length does not meet requirements." };
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}
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const lowerRegex = /[a-z]/g;
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const upperRegex = /[A-Z]/g;
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const numRegex = /[0-9]/g;
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const specialRegex = new RegExp(`[${specialChars.replace(/[-/\\^$*+?.()|[\]{}]/g, "\\$&")}]`, "g");
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const lowerCount = (password.match(lowerRegex) || []).length;
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const upperCount = (password.match(upperRegex) || []).length;
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const numCount = (password.match(numRegex) || []).length;
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const specialCount = (password.match(specialRegex) || []).length;
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if (lowerCount < minLower) {
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return { valid: false, message: "Password must contain at least " + minLower + " lowercase letter(s)." };
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}
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if (upperCount < minUpper) {
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return { valid: false, message: "Password must contain at least " + minUpper + " uppercase letter(s)." };
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}
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if (numCount < minNum) {
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return { valid: false, message: "Password must contain at least " + minNum + " digit(s)." };
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}
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if (specialCount < minSpecial) {
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return { valid: false, message: "Password must contain at least " + minSpecial + " special character(s)." };
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}
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return { valid: true };
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}
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CheckDifference(newPassword, oldPassword, neededDifference) {
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//check if new password is different from old password
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if (newPassword === oldPassword) {
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return { valid: false, message: "New password must be different from old password." };
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}
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//check how many characters are different
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let diffCount = 0;
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for (let i = 0; i < newPassword.length; i++) {
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if (newPassword[i] !== oldPassword[i]) {
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diffCount++;
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}
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}
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//check if difference is enough
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if (diffCount < neededDifference) {
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return { valid: false, message: "New password must be different from old password by at least " + neededDifference + " characters." };
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}
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return { valid: true };
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}
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}
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module.exports = PassPolicy; |