Andrea Cosentino created CAMEL-25564:
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Summary: camel-telegram - verify the Bot API secret token on
webhook updates
Key: CAMEL-25564
URL: https://issues.apache.org/jira/browse/CAMEL-25564
Project: Camel
Issue Type: Improvement
Components: camel-telegram
Reporter: Andrea Cosentino
Assignee: Andrea Cosentino
Fix For: 4.24.0, 4.18.6, 4.22.2
In webhook mode, camel-telegram registers the webhook by calling {{setWebhook}}
with the {{url}} parameter only. The Bot API's {{setWebhook}} also accepts a
{{secret_token}} parameter, which Telegram sends back in the
{{X-Telegram-Bot-Api-Secret-Token}} header of every webhook request.
Add support for it:
* add an endpoint option for the secret token, with a default derived from the
bot token, so the value stays the same across restarts and replicas;
* pass the token to {{setWebhook}} when the webhook is registered;
* in {{TelegramWebhookProcessor}}, answer a request whose header does not match
with HTTP 403, without passing it to the route;
* document the option in the webhook mode section, and add an upgrade-guide
note for deployments that register the webhook themselves
({{webhookAutoRegister=false}}).
This mirrors the inbound webhook verification of camel-clickup and the
{{webhookSecret}} option of camel-whatsapp.
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