FM / psl

/usr/lib/node_modules/npm/node_modules/psl/

/usr/lib/node_modules/npm/node_modules/psl

Name	Size	Mode	Actions
data/	-	0755	rm
dist/	-	0755	rm
.eslintignore	6	0644	edit dl rm
.travis.yml	52	0644	edit dl rm
index.js	6036	0644	edit dl rm
karma.conf.js	499	0644	edit dl rm
package.json	2136	0644	edit dl rm
README.md	6594	0644	edit dl rm
yarn.lock	152788	0644	edit dl rm

Edit: /usr/lib/node_modules/npm/node_modules/psl/index.js (6036B)

/*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);
};

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