Fixes#13619
## Summary
- Add `TwilioSignatureVerifyConcern` that validates the
`X-Twilio-Signature` header using `Twilio::Security::RequestValidator`
(already bundled via `twilio-ruby` gem)
- Include the concern in `Twilio::CallbackController` and
`Twilio::DeliveryStatusController` — both endpoints were previously
accepting requests from any source with no authentication
- Channels using API key authentication (`api_key_sid` present) skip
validation with a warning log, since Twilio signs with the account auth
token which isn't stored for those channels
## How it works
1. `before_action` looks up the `Channel::TwilioSms` from request params
(`MessagingServiceSid` or `AccountSid` + phone number)
2. Validates the HMAC-SHA1 signature using the channel's auth token
3. Returns `403 Forbidden` if signature is invalid, missing, or channel
not found
4. Handles reverse proxy URL reconstruction via `X-Forwarded-Proto`
header
Follows the same pattern used by `Webhooks::ShopifyController` and
`Webhooks::TiktokController`.
## Test plan
- [x] Valid signature → 204 No Content, job enqueued
- [x] Invalid signature → 403 Forbidden, job not enqueued
- [x] Missing signature header → 403 Forbidden
- [x] Channel not found → 403 Forbidden
- [x] API key channel → skips validation, job enqueued (with warning
log)
- [x] MessagingServiceSid lookup → validates and enqueues
- [x] All existing Twilio service/job specs pass (99 examples, 0
failures)
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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>
Co-authored-by: Sojan Jose <sojan@pepalo.com>
- Twilio events were being processed synchronously, leading to slow API
responses.
- This change moves Twilio event processing to a background job to
improve performance and align with how other events (e.g., WhatsApp) are
handled.
---------
Co-authored-by: Pranav <pranav@chatwoot.com>
