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simstudioai--sim/apps/sim/tools/posthog/utils.ts
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chore: import upstream snapshot with attribution
2026-07-13 13:20:55 +08:00

41 lines
1.6 KiB
TypeScript

import { validateExternalUrl } from '@/lib/core/security/input-validation'
/**
* Shared PostHog base URL resolution.
*
* PostHog exposes two host families:
* - The "app" REST API (`/api/...`) at `us.posthog.com` / `eu.posthog.com`, authenticated
* with a personal API key.
* - The "ingest" API (`/i/v0/e`, `/batch/`, `/flags/`) at `us.i.posthog.com` / `eu.i.posthog.com`,
* authenticated with a project API key.
*
* Self-hosted PostHog instances serve both families from a single custom host. That host is
* validated with the shared SSRF guard so it can't be pointed at loopback/private/link-local
* addresses (e.g. cloud instance-metadata endpoints); the tool executor additionally
* re-validates with DNS resolution and pins the resolved IP for the actual request.
*/
export function getPostHogAppBaseUrl(region?: 'us' | 'eu', host?: string): string {
if (host?.trim()) {
return normalizeHost(host)
}
return region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
}
export function getPostHogIngestBaseUrl(region?: 'us' | 'eu', host?: string): string {
if (host?.trim()) {
return normalizeHost(host)
}
return region === 'eu' ? 'https://eu.i.posthog.com' : 'https://us.i.posthog.com'
}
function normalizeHost(host: string): string {
const trimmed = host.trim().replace(/\/+$/, '')
const withProtocol = /^https?:\/\//i.test(trimmed) ? trimmed : `https://${trimmed}`
const validation = validateExternalUrl(withProtocol, 'Self-hosted host')
if (!validation.isValid) {
throw new Error(`${validation.error} (e.g., posthog.mycompany.com)`)
}
return withProtocol
}