Merge pull request '541 security improvements' (#542) from 541_Security_improvements into master

Reviewed-on: #542

intervention/tests/test_views.py

@@ -36,6 +36,7 @@ class InterventionViewTestCase(BaseViewTestCase):
         self.run_check_url = reverse("intervention:check", args=(self.intervention.id,))
         self.record_url = reverse("intervention:record", args=(self.intervention.id,))
         self.report_url = reverse("intervention:report", args=(self.intervention.id,))
+        self.compensation_remove_url = reverse("intervention:remove-compensation", args=(self.compensation.intervention.id, self.compensation.id))
 
         self.deduction.intervention = self.intervention
         self.deduction.save()
@@ -83,6 +84,7 @@ class InterventionViewTestCase(BaseViewTestCase):
             self.revocation_new_url: f"{login_redirect_base}{self.revocation_new_url}",
             self.revocation_edit_url: f"{login_redirect_base}{self.revocation_edit_url}",
             self.revocation_remove_url: f"{login_redirect_base}{self.revocation_remove_url}",
+            self.compensation_remove_url: f"{login_redirect_base}{self.compensation_remove_url}",
         }
 
         self.assert_url_success(client, success_urls)
@@ -124,6 +126,7 @@ class InterventionViewTestCase(BaseViewTestCase):
             self.deduction_new_url,
             self.deduction_edit_url,
             self.deduction_remove_url,
+            self.compensation_remove_url,
         ]
 
         self.assert_url_success(client, success_urls)
@@ -162,6 +165,7 @@ class InterventionViewTestCase(BaseViewTestCase):
             self.deduction_new_url,
             self.deduction_edit_url,
             self.deduction_remove_url,
+            self.compensation_remove_url,
         ]
         fail_urls = [
             self.run_check_url,
@@ -212,6 +216,7 @@ class InterventionViewTestCase(BaseViewTestCase):
             self.deduction_new_url,
             self.deduction_edit_url,
             self.deduction_remove_url,
+            self.compensation_remove_url,
         ]
         success_urls_redirect = {
             self.share_url: self.detail_url
@@ -258,6 +263,7 @@ class InterventionViewTestCase(BaseViewTestCase):
             self.deduction_new_url,
             self.deduction_edit_url,
             self.deduction_remove_url,
+            self.compensation_remove_url,
         ]
         success_urls_redirect = {
             self.share_url: self.detail_url
@@ -304,6 +310,7 @@ class InterventionViewTestCase(BaseViewTestCase):
             self.deduction_new_url,
             self.deduction_edit_url,
             self.deduction_remove_url,
+            self.compensation_remove_url,
         ]
         success_urls_redirect = {
             self.share_url: self.detail_url
@@ -350,6 +357,7 @@ class InterventionViewTestCase(BaseViewTestCase):
             self.deduction_new_url,
             self.deduction_edit_url,
             self.deduction_remove_url,
+            self.compensation_remove_url,
         ]
         success_urls_redirect = {
             self.share_url: self.detail_url
@@ -396,6 +404,7 @@ class InterventionViewTestCase(BaseViewTestCase):
             self.deduction_new_url,
             self.deduction_edit_url,
             self.deduction_remove_url,
+            self.compensation_remove_url,
         ]
         # Define urls where a redirect to a specific location is the proper response
         success_urls_redirect = {

intervention/views/compensation.py

@@ -14,7 +14,7 @@ from django.utils.decorators import method_decorator
 from django.views import View
 
 from intervention.models import Intervention
-from konova.decorators import shared_access_required
+from konova.decorators import shared_access_required, default_group_required
 from konova.forms.modals import RemoveModalForm
 from konova.utils.message_templates import COMPENSATION_REMOVED_TEMPLATE
 
@@ -45,10 +45,12 @@ class RemoveCompensationFromInterventionView(LoginRequiredMixin, View):
             redirect_url=reverse("intervention:detail", args=(id,)) + "#related_data",
         )
 
+    @method_decorator(default_group_required)
     @method_decorator(shared_access_required(Intervention, "id"))
     def get(self, request, id: str, comp_id: str, *args, **kwargs) -> HttpResponse:
         return self.__process_request(request, id, comp_id, *args, **kwargs)
 
+    @method_decorator(default_group_required)
     @method_decorator(shared_access_required(Intervention, "id"))
     def post(self, request, id: str, comp_id: str, *args, **kwargs) -> HttpResponse:
         return self.__process_request(request, id, comp_id, *args, **kwargs)

konova/utils/generators.py

@@ -5,22 +5,18 @@ Contact: michel.peltriaux@sgdnord.rlp.de
 Created on: 09.11.20
 
 """
-import random
+import secrets
 import string
-import qrcode
-import qrcode.image.svg
-
-from io import BytesIO
 
 
-def generate_token() -> str:
+def generate_token(length: int = 64) -> str:
     """ Shortcut for default generating of e.g. API token
 
     Returns:
         token (str)
     """
     return generate_random_string(
-        length=64,
+        length=length,
         use_numbers=True,
         use_letters_lc=True
     )
@@ -39,7 +35,7 @@ def generate_random_string(length: int, use_numbers: bool = False, use_letters_l
         elements.append(string.ascii_uppercase)
 
     elements = "".join(elements)
-    ret_val = "".join(random.choice(elements) for i in range(length))
+    ret_val = "".join(secrets.choice(elements) for i in range(length))
     return ret_val
 
 class IdentifierGenerator:

user/views/propagate.py

@@ -7,9 +7,10 @@ Created on: 10.05.24
 """
 import base64
 import hashlib
+import http
 import json
 
-from cryptography.fernet import Fernet
+from cryptography.fernet import Fernet, InvalidToken
 from django.core.exceptions import ObjectDoesNotExist
 from django.http import HttpRequest, JsonResponse
 from django.utils.decorators import method_decorator
@@ -27,34 +28,77 @@ class PropagateUserView(View):
     proper rights management)
 
     """
+    class PropagateStatus:
+        UNPROCESSED = "unprocessed"
+        UPDATED = "updated"
+        CREATED = "created"
 
     @method_decorator(csrf_exempt)
     def dispatch(self, request, *args, **kwargs):
         return super().dispatch(request, *args, **kwargs)
 
     def post(self, request: HttpRequest, *args, **kwargs):
+        response_data = {
+            "success": None,
+            "status": None
+        }
+
         # Decrypt
         encrypted_body = request.body
         _hash = hashlib.md5()
         _hash.update(PROPAGATION_SECRET.encode("utf-8"))
         key = base64.urlsafe_b64encode(_hash.hexdigest().encode("utf-8"))
         fernet = Fernet(key)
+        try:
             body = fernet.decrypt(encrypted_body).decode("utf-8")
             body = json.loads(body)
+        except InvalidToken:
+            response_data["error"] = "Invalid Token"
+            response_data["success"] = False
+            response_data["status"] = self.PropagateStatus.UNPROCESSED
+            return JsonResponse(
+                status=http.HTTPStatus.UNPROCESSABLE_CONTENT,
+                data=response_data
+            )
+        except (json.JSONDecodeError) as e:
+            response_data["error"] = str(e)
+            response_data["success"] = False
+            response_data["status"] = self.PropagateStatus.UNPROCESSED
+            return JsonResponse(
+                status=http.HTTPStatus.UNPROCESSABLE_CONTENT,
+                data=response_data
+            )
+
+        # Process decrypted user data
+        processing_ret_vals = self.__process_user_data(body)
+        response_data["success"] = processing_ret_vals[0]
+        response_data["status"] = processing_ret_vals[1]
+        user = processing_ret_vals[2]
 
-        try:
-            status = "updated"
-            user = User.resolve_user_using_propagation_data(body)
-            user = user.update_user_using_propagation_data(body)
-        except ObjectDoesNotExist:
-            user = User(**body)
-            status = "created"
         user.set_unusable_password()
         user.save()
 
-        data = {
+        return JsonResponse(
-            "success": True,
+            status=http.HTTPStatus.OK,
-            "status": status
+            data=response_data
-        }
+        )
 
-        return JsonResponse(data)
+    def __process_user_data(self, body: dict) -> (bool, str, User):
+        """ Process decrypted user data
+
+        Args:
+            body:
+
+        Returns:
+            success (bool): Whether the processing was successful
+            status (str): In which way the data was used ('created' | 'updated')
+            user (User): Processed user object
+        """
+        try:
+            user = User.resolve_user_using_propagation_data(body)
+            user = user.update_user_using_propagation_data(body)
+            status = self.PropagateStatus.UPDATED
+        except ObjectDoesNotExist:
+            user = User(**body)
+            status = self.PropagateStatus.CREATED
+        return True, status, user