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71 lines
2.7 KiB
JavaScript
71 lines
2.7 KiB
JavaScript
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/*!
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* Copyright (c) 2015, Salesforce.com, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of Salesforce.com nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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"use strict";
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const pubsuffix = require("./pubsuffix-psl");
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// Gives the permutation of all possible domainMatch()es of a given domain. The
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// array is in shortest-to-longest order. Handy for indexing.
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const SPECIAL_USE_DOMAINS = ["local"]; // RFC 6761
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function permuteDomain(domain, allowSpecialUseDomain) {
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let pubSuf = null;
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if (allowSpecialUseDomain) {
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const domainParts = domain.split(".");
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if (SPECIAL_USE_DOMAINS.includes(domainParts[domainParts.length - 1])) {
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pubSuf = `${domainParts[domainParts.length - 2]}.${
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domainParts[domainParts.length - 1]
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}`;
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} else {
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pubSuf = pubsuffix.getPublicSuffix(domain);
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}
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} else {
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pubSuf = pubsuffix.getPublicSuffix(domain);
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}
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if (!pubSuf) {
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return null;
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}
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if (pubSuf == domain) {
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return [domain];
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}
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const prefix = domain.slice(0, -(pubSuf.length + 1)); // ".example.com"
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const parts = prefix.split(".").reverse();
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let cur = pubSuf;
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const permutations = [cur];
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while (parts.length) {
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cur = `${parts.shift()}.${cur}`;
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permutations.push(cur);
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}
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return permutations;
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}
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exports.permuteDomain = permuteDomain;
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