simple implementation of request view authorization

atst/routes/requests/requests_form.py

@@ -3,6 +3,7 @@ from flask import g, redirect, render_template, url_for, request as http_request
 from . import requests_bp
 from atst.domain.requests import Requests
 from atst.routes.requests.jedi_request_flow import JEDIRequestFlow
+from atst.models.permissions import Permissions
 
 
 @requests_bp.route("/requests/new/<int:screen>", methods=["GET"])
@@ -25,6 +26,9 @@ def requests_form_new(screen):
 )
 @requests_bp.route("/requests/new/<int:screen>/<string:request_id>", methods=["GET"])
 def requests_form_update(screen=1, request_id=None):
+    if request_id and not _can_view_request(request_id):
+        return redirect(url_for("atst.unauthorized"))
+
     request = Requests.get(request_id) if request_id is not None else None
     jedi_flow = JEDIRequestFlow(screen, request, request_id=request_id)
 
@@ -79,10 +83,12 @@ def requests_update(screen=1, request_id=None):
                     request_id=jedi_flow.request_id,
                 )
             return redirect(where)
+
         else:
             return render_template(
                 "requests/screen-%d.html" % int(screen), **rerender_args
             )
+
     else:
         return render_template("requests/screen-%d.html" % int(screen), **rerender_args)
 
@@ -94,5 +100,15 @@ def requests_submit(request_id=None):
 
     if request.status == "approved":
         return redirect("/requests?modal=True")
+
     else:
         return redirect("/requests")
+
+
+# TODO: generalize this, along with other authorizations, into a policy-pattern
+# for authorization in the application
+def _can_view_request(request_id):
+    return (
+        Permissions.REVIEW_AND_APPROVE_JEDI_WORKSPACE_REQUEST in g.current_user.atat_permissions
+        or Requests.is_creator(request_id, g.current_user.id)
+    )