5f5f0021db
no issue - support ends today - see https://github.com/nodejs/Release - removed `use strict`
102 lines
2.7 KiB
JavaScript
102 lines
2.7 KiB
JavaScript
const crypto = require('crypto');
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module.exports.generateHash = function generateHash(options) {
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options = options || {};
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const hash = crypto.createHash('sha256'),
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expires = options.expires,
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email = options.email,
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secret = options.secret;
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let text = '';
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hash.update(String(expires));
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hash.update(email.toLocaleLowerCase());
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hash.update(String(secret));
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text += [expires, email, hash.digest('base64')].join('|');
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return new Buffer(text).toString('base64');
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};
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module.exports.resetToken = {
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generateHash: function generateHash(options) {
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options = options || {};
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var hash = crypto.createHash('sha256'),
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expires = options.expires,
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email = options.email,
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dbHash = options.dbHash,
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password = options.password,
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text = '';
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hash.update(String(expires));
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hash.update(email.toLocaleLowerCase());
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hash.update(password);
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hash.update(String(dbHash));
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text += [expires, email, hash.digest('base64')].join('|');
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return new Buffer(text).toString('base64');
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},
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extract: function extract(options) {
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options = options || {};
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var token = options.token,
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tokenText = new Buffer(token, 'base64').toString('ascii'),
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parts,
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expires,
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email;
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parts = tokenText.split('|');
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// Check if invalid structure
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if (!parts || parts.length !== 3) {
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return false;
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}
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expires = parseInt(parts[0], 10);
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email = parts[1];
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return {
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expires: expires,
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email: email
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};
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},
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compare: function compare(options) {
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options = options || {};
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var tokenToCompare = options.token,
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parts = exports.resetToken.extract({token: tokenToCompare}),
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dbHash = options.dbHash,
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password = options.password,
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generatedToken,
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diff = 0,
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i;
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if (isNaN(parts.expires)) {
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return false;
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}
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// Check if token is expired to prevent replay attacks
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if (parts.expires < Date.now()) {
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return false;
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}
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generatedToken = exports.resetToken.generateHash({
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email: parts.email,
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expires: parts.expires,
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dbHash: dbHash,
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password: password
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});
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if (tokenToCompare.length !== generatedToken.length) {
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diff = 1;
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}
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for (i = tokenToCompare.length - 1; i >= 0; i = i - 1) {
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diff |= tokenToCompare.charCodeAt(i) ^ generatedToken.charCodeAt(i);
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}
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return diff === 0;
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}
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};
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