67 lines
No EOL
2.4 KiB
JavaScript
67 lines
No EOL
2.4 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.default = suffixLookup;
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const tldts_core_1 = require("tldts-core");
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const trie_1 = require("./data/trie");
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/**
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* Lookup parts of domain in Trie
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*/
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function lookupInTrie(parts, trie, index, allowedMask) {
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let result = null;
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let node = trie;
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while (node !== undefined) {
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// We have a match!
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if ((node[0] & allowedMask) !== 0) {
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result = {
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index: index + 1,
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isIcann: node[0] === 1 /* RULE_TYPE.ICANN */,
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isPrivate: node[0] === 2 /* RULE_TYPE.PRIVATE */,
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};
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}
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// No more `parts` to look for
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if (index === -1) {
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break;
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}
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const succ = node[1];
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node = Object.prototype.hasOwnProperty.call(succ, parts[index])
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? succ[parts[index]]
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: succ['*'];
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index -= 1;
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}
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return result;
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}
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/**
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* Check if `hostname` has a valid public suffix in `trie`.
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*/
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function suffixLookup(hostname, options, out) {
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var _a;
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if ((0, tldts_core_1.fastPathLookup)(hostname, options, out)) {
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return;
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}
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const hostnameParts = hostname.split('.');
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const allowedMask = (options.allowPrivateDomains ? 2 /* RULE_TYPE.PRIVATE */ : 0) |
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(options.allowIcannDomains ? 1 /* RULE_TYPE.ICANN */ : 0);
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// Look for exceptions
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const exceptionMatch = lookupInTrie(hostnameParts, trie_1.exceptions, hostnameParts.length - 1, allowedMask);
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if (exceptionMatch !== null) {
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out.isIcann = exceptionMatch.isIcann;
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out.isPrivate = exceptionMatch.isPrivate;
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out.publicSuffix = hostnameParts.slice(exceptionMatch.index + 1).join('.');
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return;
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}
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// Look for a match in rules
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const rulesMatch = lookupInTrie(hostnameParts, trie_1.rules, hostnameParts.length - 1, allowedMask);
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if (rulesMatch !== null) {
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out.isIcann = rulesMatch.isIcann;
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out.isPrivate = rulesMatch.isPrivate;
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out.publicSuffix = hostnameParts.slice(rulesMatch.index).join('.');
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return;
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}
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// No match found...
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// Prevailing rule is '*' so we consider the top-level domain to be the
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// public suffix of `hostname` (e.g.: 'example.org' => 'org').
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out.isIcann = false;
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out.isPrivate = false;
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out.publicSuffix = (_a = hostnameParts[hostnameParts.length - 1]) !== null && _a !== void 0 ? _a : null;
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}
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//# sourceMappingURL=suffix-trie.js.map
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