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7629a505e0
- runSyncPass bidirecional: regra do relógio decide direção (Google mais novo aplica título/horário; Teqo re-asserta), cancelamento via showDeleted + snapshot lastSeenEventIds, registro no updates feed - webhook público /campanha/agenda/google-webhook/[secret] fail-closed (secret + X-Goog headers constant-time), canal lazy sem cron (ensure em toda passada, renovação com id novo + stop do antigo) - migration hand-written (campos de canal/snapshot em googleCalendarSync); mutationKind dedicado libera título via Google sem quebrar slug canônico - UI: seção 'Edições pelo Google' no dialog + autor 'Google Calendar' no feed - testes: unit (reverse mapping, validação webhook), int (motor bidirecional com stub, 10 cenários), e2e (webhook 404 fail-closed)
42 lines
1.6 KiB
TypeScript
42 lines
1.6 KiB
TypeScript
/**
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* C115 — fail-closed validation of Google Calendar push deliveries (the
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* webhook route's security contract). Google echoes the channel identity on
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* every notification: the URL secret, the channel id, the resource id and
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* the channel token must ALL match the stored channel — compared in constant
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* time, because the endpoint is a public surface. Any mismatch rejects.
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*/
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import { timingSafeEqual } from 'node:crypto'
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type GooglePushChannelConfig = {
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pushChannelSecret: string | null
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pushChannelId: string | null
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pushChannelResourceId: string | null
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}
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export type GooglePushNotificationInput = {
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secret: string
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channelId: string | null
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resourceId: string | null
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channelToken: string | null
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config: GooglePushChannelConfig
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}
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const safeEqual = (a: string, b: string): boolean => {
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const aBuffer = Buffer.from(a)
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const bBuffer = Buffer.from(b)
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return aBuffer.length === bBuffer.length && timingSafeEqual(aBuffer, bBuffer)
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}
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export const isGooglePushNotificationValid = (input: GooglePushNotificationInput): boolean => {
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const { secret, channelId, resourceId, channelToken, config } = input
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if (secret.length < 32) return false
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if (!config.pushChannelSecret || !config.pushChannelId || !config.pushChannelResourceId) {
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return false
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}
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if (!safeEqual(secret, config.pushChannelSecret)) return false
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if (!channelId || !resourceId || !channelToken) return false
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if (!safeEqual(channelId, config.pushChannelId)) return false
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if (!safeEqual(resourceId, config.pushChannelResourceId)) return false
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if (!safeEqual(channelToken, config.pushChannelSecret)) return false
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return true
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}
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