Revize aa740737

Re #8476 - Implemented and tested `get_cert_chain(id)`.

src/controllers/certificates_controller.py

@@ -293 +293 @@
         """
         CertController.setup()  # TODO remove after issue fixed
 
-        if connexion.request.is_json:
-            id = IdParameter.from_dict(connexion.request.get_json())  # noqa: E501
-        return 'do some magic!'
+        try:
+            v = int(id)
+        except ValueError:
+            return E_WRONG_PARAMETERS, 400
+
+        cert = CERTIFICATE_SERVICE.get_certificate(v)
+
+        if cert is None:
+            return E_NO_CERTIFICATES_FOUND, 205  # TODO related to 204 issue
+
+        ret = []
+
+        while True:
+            cert = CERTIFICATE_SERVICE.get_certificate(cert.parent_id)
+            if cert is None:
+                return E_CORRUPTED_DATABASE, 500
+            elif cert.parent_id == cert.certificate_id:
+                break
+            ret.append(cert.pem_data)
 
+        return {"success": True, "data": "".join(ret)}
 
     @staticmethod
     def cert_to_dict_partial(c):