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Diffstat (limited to 'school/node_modules/psl/index.js')
| -rw-r--r-- | school/node_modules/psl/index.js | 269 |
1 files changed, 0 insertions, 269 deletions
diff --git a/school/node_modules/psl/index.js b/school/node_modules/psl/index.js deleted file mode 100644 index da7bc12..0000000 --- a/school/node_modules/psl/index.js +++ /dev/null @@ -1,269 +0,0 @@ -/*eslint no-var:0, prefer-arrow-callback: 0, object-shorthand: 0 */ -'use strict'; - - -var Punycode = require('punycode'); - - -var internals = {}; - - -// -// Read rules from file. -// -internals.rules = require('./data/rules.json').map(function (rule) { - - return { - rule: rule, - suffix: rule.replace(/^(\*\.|\!)/, ''), - punySuffix: -1, - wildcard: rule.charAt(0) === '*', - exception: rule.charAt(0) === '!' - }; -}); - - -// -// Check is given string ends with `suffix`. -// -internals.endsWith = function (str, suffix) { - - return str.indexOf(suffix, str.length - suffix.length) !== -1; -}; - - -// -// Find rule for a given domain. -// -internals.findRule = function (domain) { - - var punyDomain = Punycode.toASCII(domain); - return internals.rules.reduce(function (memo, rule) { - - if (rule.punySuffix === -1){ - rule.punySuffix = Punycode.toASCII(rule.suffix); - } - if (!internals.endsWith(punyDomain, '.' + rule.punySuffix) && punyDomain !== rule.punySuffix) { - return memo; - } - // This has been commented out as it never seems to run. This is because - // sub tlds always appear after their parents and we never find a shorter - // match. - //if (memo) { - // var memoSuffix = Punycode.toASCII(memo.suffix); - // if (memoSuffix.length >= punySuffix.length) { - // return memo; - // } - //} - return rule; - }, null); -}; - - -// -// Error codes and messages. -// -exports.errorCodes = { - DOMAIN_TOO_SHORT: 'Domain name too short.', - DOMAIN_TOO_LONG: 'Domain name too long. It should be no more than 255 chars.', - LABEL_STARTS_WITH_DASH: 'Domain name label can not start with a dash.', - LABEL_ENDS_WITH_DASH: 'Domain name label can not end with a dash.', - LABEL_TOO_LONG: 'Domain name label should be at most 63 chars long.', - LABEL_TOO_SHORT: 'Domain name label should be at least 1 character long.', - LABEL_INVALID_CHARS: 'Domain name label can only contain alphanumeric characters or dashes.' -}; - - -// -// Validate domain name and throw if not valid. -// -// From wikipedia: -// -// Hostnames are composed of series of labels concatenated with dots, as are all -// domain names. Each label must be between 1 and 63 characters long, and the -// entire hostname (including the delimiting dots) has a maximum of 255 chars. -// -// Allowed chars: -// -// * `a-z` -// * `0-9` -// * `-` but not as a starting or ending character -// * `.` as a separator for the textual portions of a domain name -// -// * http://en.wikipedia.org/wiki/Domain_name -// * http://en.wikipedia.org/wiki/Hostname -// -internals.validate = function (input) { - - // Before we can validate we need to take care of IDNs with unicode chars. - var ascii = Punycode.toASCII(input); - - if (ascii.length < 1) { - return 'DOMAIN_TOO_SHORT'; - } - if (ascii.length > 255) { - return 'DOMAIN_TOO_LONG'; - } - - // Check each part's length and allowed chars. - var labels = ascii.split('.'); - var label; - - for (var i = 0; i < labels.length; ++i) { - label = labels[i]; - if (!label.length) { - return 'LABEL_TOO_SHORT'; - } - if (label.length > 63) { - return 'LABEL_TOO_LONG'; - } - if (label.charAt(0) === '-') { - return 'LABEL_STARTS_WITH_DASH'; - } - if (label.charAt(label.length - 1) === '-') { - return 'LABEL_ENDS_WITH_DASH'; - } - if (!/^[a-z0-9\-]+$/.test(label)) { - return 'LABEL_INVALID_CHARS'; - } - } -}; - - -// -// Public API -// - - -// -// Parse domain. -// -exports.parse = function (input) { - - if (typeof input !== 'string') { - throw new TypeError('Domain name must be a string.'); - } - - // Force domain to lowercase. - var domain = input.slice(0).toLowerCase(); - - // Handle FQDN. - // TODO: Simply remove trailing dot? - if (domain.charAt(domain.length - 1) === '.') { - domain = domain.slice(0, domain.length - 1); - } - - // Validate and sanitise input. - var error = internals.validate(domain); - if (error) { - return { - input: input, - error: { - message: exports.errorCodes[error], - code: error - } - }; - } - - var parsed = { - input: input, - tld: null, - sld: null, - domain: null, - subdomain: null, - listed: false - }; - - var domainParts = domain.split('.'); - - // Non-Internet TLD - if (domainParts[domainParts.length - 1] === 'local') { - return parsed; - } - - var handlePunycode = function () { - - if (!/xn--/.test(domain)) { - return parsed; - } - if (parsed.domain) { - parsed.domain = Punycode.toASCII(parsed.domain); - } - if (parsed.subdomain) { - parsed.subdomain = Punycode.toASCII(parsed.subdomain); - } - return parsed; - }; - - var rule = internals.findRule(domain); - - // Unlisted tld. - if (!rule) { - if (domainParts.length < 2) { - return parsed; - } - parsed.tld = domainParts.pop(); - parsed.sld = domainParts.pop(); - parsed.domain = [parsed.sld, parsed.tld].join('.'); - if (domainParts.length) { - parsed.subdomain = domainParts.pop(); - } - return handlePunycode(); - } - - // At this point we know the public suffix is listed. - parsed.listed = true; - - var tldParts = rule.suffix.split('.'); - var privateParts = domainParts.slice(0, domainParts.length - tldParts.length); - - if (rule.exception) { - privateParts.push(tldParts.shift()); - } - - parsed.tld = tldParts.join('.'); - - if (!privateParts.length) { - return handlePunycode(); - } - - if (rule.wildcard) { - tldParts.unshift(privateParts.pop()); - parsed.tld = tldParts.join('.'); - } - - if (!privateParts.length) { - return handlePunycode(); - } - - parsed.sld = privateParts.pop(); - parsed.domain = [parsed.sld, parsed.tld].join('.'); - - if (privateParts.length) { - parsed.subdomain = privateParts.join('.'); - } - - return handlePunycode(); -}; - - -// -// Get domain. -// -exports.get = function (domain) { - - if (!domain) { - return null; - } - return exports.parse(domain).domain || null; -}; - - -// -// Check whether domain belongs to a known public suffix. -// -exports.isValid = function (domain) { - - var parsed = exports.parse(domain); - return Boolean(parsed.domain && parsed.listed); -}; |