Add slug validation and test (#1891)

Fixes #1890 

Adds validation for org slugs, ensuring that they contain only ASCII
alphanumeric characters and dashes (`-`). If an invalid slug is
provided, an HTTPException is returned with status code 400 and detail
`invalid_slug`.

backend/btrixcloud/orgs.py

@@ -41,7 +41,7 @@ from .models import (
     PaginatedResponse,
 )
 from .pagination import DEFAULT_PAGE_SIZE, paginated_format
-from .utils import slug_from_name
+from .utils import slug_from_name, validate_slug
 
 if TYPE_CHECKING:
     from .invites import InviteOps
@@ -775,8 +775,10 @@ def init_orgs_api(app, mdb, user_manager, invites, user_dep):
 
         id_ = uuid4()
 
-        slug = new_org.slug
+        if new_org.slug:
-        if not slug:
+            validate_slug(new_org.slug)
+            slug = new_org.slug
+        else:
             slug = slug_from_name(new_org.name)
 
         org = Organization(
@@ -803,6 +805,7 @@ def init_orgs_api(app, mdb, user_manager, invites, user_dep):
     ):
         org.name = rename.name
         if rename.slug:
+            validate_slug(rename.slug)
             org.slug = rename.slug
         else:
             org.slug = slug_from_name(rename.name)

backend/btrixcloud/utils.py

@@ -8,6 +8,7 @@ import json
 import signal
 import os
 import sys
+import re
 
 from datetime import datetime
 from typing import Optional, Dict, Union, List
@@ -123,6 +124,15 @@ def slug_from_name(name: str) -> str:
     return slugify(name.replace("'", ""))
 
 
+def validate_slug(slug: str) -> None:
+    """Validate org slug, raise HTTPException if invalid
+
+    Slugs must contain alphanumeric characters and dashes (-) only.
+    """
+    if re.match(r"^[\w-]+$", slug) is None:
+        raise HTTPException(status_code=400, detail="invalid_slug")
+
+
 def stream_dict_list_as_csv(data: List[Dict[str, Union[str, int]]], filename: str):
     """Stream list of dictionaries as CSV with attachment filename header"""
     if not data:

backend/test/test_org.py

@@ -72,6 +72,20 @@ def test_rename_org(admin_auth_headers, default_org_id):
     assert data["slug"] == UPDATED_SLUG
 
 
+def test_rename_org_invalid_slug(admin_auth_headers, default_org_id):
+    UPDATED_NAME = "updated org name"
+    UPDATED_SLUG = "not a valid slug"
+    rename_data = {"name": UPDATED_NAME, "slug": UPDATED_SLUG}
+    r = requests.post(
+        f"{API_PREFIX}/orgs/{default_org_id}/rename",
+        headers=admin_auth_headers,
+        json=rename_data,
+    )
+
+    assert r.status_code == 400
+    assert r.json()["detail"] == "invalid_slug"
+
+
 def test_create_org(admin_auth_headers):
     NEW_ORG_NAME = "New Org"
     r = requests.post(