DMleadgen
46d973904b
Next.js website for Rocky Mountain Vending company featuring: - Product catalog with Stripe integration - Service areas and parts pages - Admin dashboard with Clerk authentication - SEO optimized pages with JSON-LD structured data Co-authored-by: Cursor <cursoragent@cursor.com>
104 lines
2.5 KiB
Text
Executable file
104 lines
2.5 KiB
Text
Executable file
import { assert } from '@hapi/hoek';
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import { ipVersions } from './uri';
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interface Options {
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/**
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* The required CIDR mode.
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*
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* @default 'optional'
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*/
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readonly cidr?: Cidr;
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/**
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* The allowed versions.
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*
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* @default ['ipv4', 'ipv6', 'ipvfuture']
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*/
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readonly version?: Version | Version[];
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}
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type Cidr = 'optional' | 'required' | 'forbidden';
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type Version = 'ipv4' | 'ipv6' | 'ipvfuture';
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interface Expression {
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/** The CIDR mode. */
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cidr: Cidr;
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/** The raw regular expression string. */
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raw: string;
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/** The regular expression. */
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regex: RegExp;
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/** The array of versions allowed. */
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versions: Version[];
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}
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/**
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* Generates a regular expression used to validate IP addresses.
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*
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* @param options - optional settings.
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*
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* @returns an object with the regular expression and meta data.
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*/
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export function ipRegex(options: Options = {}): Expression {
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// CIDR
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const cidr = options.cidr || 'optional';
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assert(
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['required', 'optional', 'forbidden'].includes(cidr),
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'options.cidr must be one of required, optional, forbidden'
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);
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// Versions
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assert(
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options.version === undefined || typeof options.version === 'string' || Array.isArray(options.version),
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'options.version must be a string or an array of string'
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);
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let versions = options.version || ['ipv4', 'ipv6', 'ipvfuture'];
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if (!Array.isArray(versions)) {
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versions = [versions];
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}
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assert(versions.length >= 1, 'options.version must have at least 1 version specified');
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for (const version of versions) {
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assert(typeof version === 'string' && version === version.toLowerCase(), 'Invalid options.version value');
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assert(
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['ipv4', 'ipv6', 'ipvfuture'].includes(version),
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'options.version contains unknown version ' + version + ' - must be one of ipv4, ipv6, ipvfuture'
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);
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}
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versions = Array.from(new Set(versions));
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// Regex
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const parts = versions.map((version) => {
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// Forbidden
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if (cidr === 'forbidden') {
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return ipVersions[version];
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}
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// Required
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const cidrpart = `\\/${version === 'ipv4' ? ipVersions.v4Cidr : ipVersions.v6Cidr}`;
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if (cidr === 'required') {
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return `${ipVersions[version]}${cidrpart}`;
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}
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// Optional
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return `${ipVersions[version]}(?:${cidrpart})?`;
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});
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const raw = `(?:${parts.join('|')})`;
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const regex = new RegExp(`^${raw}$`);
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return { cidr, versions, regex, raw };
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}
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