1 files changed, 30 insertions, 0 deletions

diff --git a/server/middlewares/validators/activitypub/signature.ts b/server/middlewares/validators/activitypub/signature.ts
new file mode 100644
index 000000000..0ce15c1f6
--- /dev/null
+++ b/server/middlewares/validators/activitypub/signature.ts
@@ -0,0 +1,30 @@
+import { body } from 'express-validator/check'
+import * as express from 'express'
+
+import {
+  logger,
+  isDateValid,
+  isSignatureTypeValid,
+  isSignatureCreatorValid,
+  isSignatureValueValid
+} from '../../../helpers'
+import { checkErrors } from '../utils'
+
+const signatureValidator = [
+  body('signature.type').custom(isSignatureTypeValid).withMessage('Should have a valid signature type'),
+  body('signature.created').custom(isDateValid).withMessage('Should have a valid signature created date'),
+  body('signature.creator').custom(isSignatureCreatorValid).withMessage('Should have a valid signature creator'),
+  body('signature.signatureValue').custom(isSignatureValueValid).withMessage('Should have a valid signature value'),
+
+  (req: express.Request, res: express.Response, next: express.NextFunction) => {
+    logger.debug('Checking activitypub signature parameter', { parameters: { signature: req.body.signature } })
+
+    checkErrors(req, res, next)
+  }
+]
+
+// ---------------------------------------------------------------------------
+
+export {
+  signatureValidator
+}