R524809
70 lines
3.1 KiB
TypeScript
70 lines
3.1 KiB
TypeScript
/**
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* A deliberately narrow MAIN-world bridge for the mature 1688/Taobao/Tmall
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* structured collectors. It never exposes cookies, headers, arbitrary window
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* keys, or a generic fetch primitive; only public product-state projections.
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*/
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export default defineContentScript({
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matches: [
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'*://detail.1688.com/*',
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'*://item.taobao.com/*',
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'*://detail.tmall.com/*',
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],
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world: 'MAIN',
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runAt: 'document_idle',
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main() {
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window.addEventListener('message', (event) => {
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if (event.source !== window || !isRequest(event.data)) return;
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const data = event.data.platform === '1688'
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? project1688((window as unknown as Record<string, unknown>).context)
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: projectTaobao(window as unknown as Record<string, unknown>);
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window.postMessage({
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source: 'atlas-collector',
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type: 'source-page-state.response',
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requestId: event.data.requestId,
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data,
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}, location.origin);
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});
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},
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});
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type Request = { source: 'atlas-collector'; type: 'source-page-state.request'; requestId: string; platform: '1688' | 'taobao' | 'tmall' };
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function isRequest(value: unknown): value is Request {
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if (!value || typeof value !== 'object' || Array.isArray(value)) return false;
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const data = value as Record<string, unknown>;
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return data.source === 'atlas-collector' && data.type === 'source-page-state.request'
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&& typeof data.requestId === 'string' && /^[a-zA-Z0-9-]{16,120}$/.test(data.requestId)
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&& (data.platform === '1688' || data.platform === 'taobao' || data.platform === 'tmall');
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}
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const safeClone = (value: unknown) => { try { return JSON.parse(JSON.stringify(value)); } catch { return undefined; } };
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function find(value: unknown, key: string): unknown {
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const pending: unknown[] = [value];
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const seen = new Set<object>();
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let visited = 0;
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while (pending.length && visited < 300_000) {
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const current = pending.shift();
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if (!current || typeof current !== 'object' || seen.has(current)) continue;
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seen.add(current);
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visited += 1;
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const record = current as Record<string, unknown>;
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if (key in record) return record[key];
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pending.push(...Object.values(record));
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}
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return undefined;
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}
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function project1688(context: unknown) {
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const projected: Record<string, unknown> = {};
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for (const key of ['gallery', 'tempModel', 'skuModel', 'tradeModel', 'skuMapOriginal', 'pieceWeightScaleInfo', 'productAttributes']) {
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const value = find(context, key);
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if (value !== undefined) projected[key] = safeClone(value);
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}
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return projected;
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}
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function projectTaobao(windowState: Record<string, unknown>) {
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const ice = windowState.__ICE_APP_CONTEXT__ as Record<string, unknown> | undefined;
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const result = ice?.loaderData && typeof ice.loaderData === 'object'
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? (((ice.loaderData as Record<string, unknown>).home as Record<string, unknown> | undefined)?.data as Record<string, unknown> | undefined)?.res
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: undefined;
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return { product: safeClone(result) };
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}
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