101 lines
2.8 KiB
JavaScript
101 lines
2.8 KiB
JavaScript
|
import merge from './util/merge';
|
||
|
|
import assertString from './util/assertString';
|
||
|
|
var upperCaseRegex = /^[A-Z]$/;
|
||
|
|
var lowerCaseRegex = /^[a-z]$/;
|
||
|
|
var numberRegex = /^[0-9]$/;
|
||
|
|
var symbolRegex = /^[-#!$@%^&*()_+|~=`{}\[\]:";'<>?,.\/ ]$/;
|
||
|
|
var defaultOptions = {
|
||
|
|
minLength: 8,
|
||
|
|
minLowercase: 1,
|
||
|
|
minUppercase: 1,
|
||
|
|
minNumbers: 1,
|
||
|
|
minSymbols: 1,
|
||
|
|
returnScore: false,
|
||
|
|
pointsPerUnique: 1,
|
||
|
|
pointsPerRepeat: 0.5,
|
||
|
|
pointsForContainingLower: 10,
|
||
|
|
pointsForContainingUpper: 10,
|
||
|
|
pointsForContainingNumber: 10,
|
||
|
|
pointsForContainingSymbol: 10
|
||
|
|
};
|
||
|
|
/* Counts number of occurrences of each char in a string
|
||
|
|
* could be moved to util/ ?
|
||
|
|
*/
|
||
|
|
|
||
|
|
function countChars(str) {
|
||
|
|
var result = {};
|
||
|
|
Array.from(str).forEach(function (_char) {
|
||
|
|
var curVal = result[_char];
|
||
|
|
|
||
|
|
if (curVal) {
|
||
|
|
result[_char] += 1;
|
||
|
|
} else {
|
||
|
|
result[_char] = 1;
|
||
|
|
}
|
||
|
|
});
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
/* Return information about a password */
|
||
|
|
|
||
|
|
|
||
|
|
function analyzePassword(password) {
|
||
|
|
var charMap = countChars(password);
|
||
|
|
var analysis = {
|
||
|
|
length: password.length,
|
||
|
|
uniqueChars: Object.keys(charMap).length,
|
||
|
|
uppercaseCount: 0,
|
||
|
|
lowercaseCount: 0,
|
||
|
|
numberCount: 0,
|
||
|
|
symbolCount: 0
|
||
|
|
};
|
||
|
|
Object.keys(charMap).forEach(function (_char2) {
|
||
|
|
/* istanbul ignore else */
|
||
|
|
if (upperCaseRegex.test(_char2)) {
|
||
|
|
analysis.uppercaseCount += charMap[_char2];
|
||
|
|
} else if (lowerCaseRegex.test(_char2)) {
|
||
|
|
analysis.lowercaseCount += charMap[_char2];
|
||
|
|
} else if (numberRegex.test(_char2)) {
|
||
|
|
analysis.numberCount += charMap[_char2];
|
||
|
|
} else if (symbolRegex.test(_char2)) {
|
||
|
|
analysis.symbolCount += charMap[_char2];
|
||
|
|
}
|
||
|
|
});
|
||
|
|
return analysis;
|
||
|
|
}
|
||
|
|
|
||
|
|
function scorePassword(analysis, scoringOptions) {
|
||
|
|
var points = 0;
|
||
|
|
points += analysis.uniqueChars * scoringOptions.pointsPerUnique;
|
||
|
|
points += (analysis.length - analysis.uniqueChars) * scoringOptions.pointsPerRepeat;
|
||
|
|
|
||
|
|
if (analysis.lowercaseCount > 0) {
|
||
|
|
points += scoringOptions.pointsForContainingLower;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (analysis.uppercaseCount > 0) {
|
||
|
|
points += scoringOptions.pointsForContainingUpper;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (analysis.numberCount > 0) {
|
||
|
|
points += scoringOptions.pointsForContainingNumber;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (analysis.symbolCount > 0) {
|
||
|
|
points += scoringOptions.pointsForContainingSymbol;
|
||
|
|
}
|
||
|
|
|
||
|
|
return points;
|
||
|
|
}
|
||
|
|
|
||
|
|
export default function isStrongPassword(str) {
|
||
|
|
var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;
|
||
|
|
assertString(str);
|
||
|
|
var analysis = analyzePassword(str);
|
||
|
|
options = merge(options || {}, defaultOptions);
|
||
|
|
|
||
|
|
if (options.returnScore) {
|
||
|
|
return scorePassword(analysis, options);
|
||
|
|
}
|
||
|
|
|
||
|
|
return analysis.length >= options.minLength && analysis.lowercaseCount >= options.minLowercase && analysis.uppercaseCount >= options.minUppercase && analysis.numberCount >= options.minNumbers && analysis.symbolCount >= options.minSymbols;
|
||
|
|
}
|