tegwick
c5a5b26797
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81 lines
2.1 KiB
TypeScript
81 lines
2.1 KiB
TypeScript
import { IPublicSuffix, ISuffixLookupOptions } from './interface';
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export default function (
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hostname: string,
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options: ISuffixLookupOptions,
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out: IPublicSuffix,
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): boolean {
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// Fast path for very popular suffixes; this allows to by-pass lookup
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// completely as well as any extra allocation or string manipulation.
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if (!options.allowPrivateDomains && hostname.length > 3) {
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const last: number = hostname.length - 1;
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const c3: number = hostname.charCodeAt(last);
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const c2: number = hostname.charCodeAt(last - 1);
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const c1: number = hostname.charCodeAt(last - 2);
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const c0: number = hostname.charCodeAt(last - 3);
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if (
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c3 === 109 /* 'm' */ &&
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c2 === 111 /* 'o' */ &&
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c1 === 99 /* 'c' */ &&
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c0 === 46 /* '.' */
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) {
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out.isIcann = true;
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out.isPrivate = false;
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out.publicSuffix = 'com';
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return true;
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} else if (
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c3 === 103 /* 'g' */ &&
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c2 === 114 /* 'r' */ &&
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c1 === 111 /* 'o' */ &&
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c0 === 46 /* '.' */
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) {
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out.isIcann = true;
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out.isPrivate = false;
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out.publicSuffix = 'org';
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return true;
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} else if (
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c3 === 117 /* 'u' */ &&
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c2 === 100 /* 'd' */ &&
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c1 === 101 /* 'e' */ &&
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c0 === 46 /* '.' */
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) {
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out.isIcann = true;
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out.isPrivate = false;
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out.publicSuffix = 'edu';
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return true;
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} else if (
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c3 === 118 /* 'v' */ &&
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c2 === 111 /* 'o' */ &&
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c1 === 103 /* 'g' */ &&
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c0 === 46 /* '.' */
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) {
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out.isIcann = true;
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out.isPrivate = false;
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out.publicSuffix = 'gov';
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return true;
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} else if (
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c3 === 116 /* 't' */ &&
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c2 === 101 /* 'e' */ &&
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c1 === 110 /* 'n' */ &&
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c0 === 46 /* '.' */
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) {
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out.isIcann = true;
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out.isPrivate = false;
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out.publicSuffix = 'net';
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return true;
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} else if (
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c3 === 101 /* 'e' */ &&
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c2 === 100 /* 'd' */ &&
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c1 === 46 /* '.' */
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) {
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out.isIcann = true;
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out.isPrivate = false;
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out.publicSuffix = 'de';
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return true;
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}
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}
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return false;
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}
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