wehub-resource-sync
127 lines
4.3 KiB
TypeScript
127 lines
4.3 KiB
TypeScript
/**
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* FingerprintRotator — Browser fingerprint profiles for session diversity
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*
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* Each profile mimics a real browser user-agent + Sec-CH-UA headers.
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* Rotating through these prevents providers from associating requests
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* to a single browser identity for rate-limiting purposes.
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*/
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import { type Fingerprint } from "./types.ts";
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// ─── Profiles ──────────────────────────────────────────────────────────────
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const PROFILES: Fingerprint[] = [
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{
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id: "chrome-mac",
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userAgent:
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"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36",
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acceptLanguage: "en-US,en;q=0.9",
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secChUa: '"Not-A.Brand";v="99", "Chromium";v="149", "Google Chrome";v="149"',
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secChUaPlatform: '"macOS"',
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secChUaMobile: "?0",
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},
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{
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id: "chrome-linux",
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userAgent:
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"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36",
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acceptLanguage: "en-US,en;q=0.9",
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secChUa: '"Not-A.Brand";v="99", "Chromium";v="149", "Google Chrome";v="149"',
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secChUaPlatform: '"Linux"',
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secChUaMobile: "?0",
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},
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{
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id: "chrome-win",
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userAgent:
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"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36",
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acceptLanguage: "en-US,en;q=0.9",
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secChUa: '"Not-A.Brand";v="99", "Chromium";v="149", "Google Chrome";v="149"',
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secChUaPlatform: '"Windows"',
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secChUaMobile: "?0",
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},
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{
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id: "firefox-mac",
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userAgent:
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"Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:152.0) Gecko/20100101 Firefox/152.0",
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acceptLanguage: "en-US,en;q=0.9",
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},
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{
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id: "firefox-linux",
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userAgent: "Mozilla/5.0 (X11; Linux x86_64; rv:152.0) Gecko/20100101 Firefox/152.0",
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acceptLanguage: "en-US,en;q=0.9",
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},
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{
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id: "safari-mac",
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userAgent:
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"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.4 Safari/605.1.15",
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acceptLanguage: "en-US,en;q=0.9",
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},
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{
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id: "edge-mac",
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userAgent:
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"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36 Edg/149.0.0.0",
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acceptLanguage: "en-US,en;q=0.9",
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secChUa: '"Not-A.Brand";v="99", "Chromium";v="149", "Microsoft Edge";v="149"',
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secChUaPlatform: '"macOS"',
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secChUaMobile: "?0",
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},
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{
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id: "edge-win",
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userAgent:
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"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36 Edg/149.0.0.0",
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acceptLanguage: "en-US,en;q=0.9",
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secChUa: '"Not-A.Brand";v="99", "Chromium";v="149", "Microsoft Edge";v="149"',
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secChUaPlatform: '"Windows"',
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secChUaMobile: "?0",
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},
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];
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// ─── FingerprintRotator ────────────────────────────────────────────────────
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export class FingerprintRotator {
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private index = 0;
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/** Get the next profile in round-robin order */
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next(): Fingerprint {
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const profile = PROFILES[this.index % PROFILES.length];
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this.index++;
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return profile;
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}
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/** Get a random profile */
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random(): Fingerprint {
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return PROFILES[Math.floor(Math.random() * PROFILES.length)];
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}
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/** Reset the round-robin counter */
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reset(): void {
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this.index = 0;
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}
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/** Number of available profiles */
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get count(): number {
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return PROFILES.length;
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}
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/** Build a Headers object from a fingerprint (with optional extras) */
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buildHeaders(fingerprint: Fingerprint, extra?: Record<string, string>): Record<string, string> {
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const headers: Record<string, string> = {
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"Content-Type": "application/json",
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Accept: "application/json, text/plain, */*",
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"Accept-Language": fingerprint.acceptLanguage ?? "en-US,en;q=0.9",
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"User-Agent": fingerprint.userAgent,
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...extra,
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};
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if (fingerprint.secChUa) {
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headers["Sec-CH-UA"] = fingerprint.secChUa;
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headers["Sec-CH-UA-Mobile"] = fingerprint.secChUaMobile ?? "?0";
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headers["Sec-CH-UA-Platform"] = fingerprint.secChUaPlatform ?? '"Windows"';
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}
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return headers;
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}
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/** List all profiles */
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listAll(): Fingerprint[] {
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return [...PROFILES];
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}
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}
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