Fix the RBAC for attaching an EE to various objects

- Organization.default_environment
- Project.default_environment
- JobTemplate.execution_environment
- WorkflowJobTemplate.execution_environment

System jobs are not editable by anyone other than a system admin, so
we don't need to check.  It appears that unified job templates can't
be created or edited outside of the endpoints for the specific types.

awx/main/access.py

@@ -777,6 +777,11 @@ class OrganizationAccess(NotificationAttachMixin, BaseAccess):
 
     @check_superuser
     def can_change(self, obj, data):
+        if data and data.get('default_environment'):
+            ee = get_object_from_data('default_environment', ExecutionEnvironment, data)
+            if not self.user.can_access(ExecutionEnvironment, 'read', ee):
+                return False
+
         return self.user in obj.admin_role
 
     def can_delete(self, obj):
@@ -1385,14 +1390,29 @@ class ProjectAccess(NotificationAttachMixin, BaseAccess):
     def can_add(self, data):
         if not data:  # So the browseable API will work
             return Organization.accessible_objects(self.user, 'project_admin_role').exists()
-        return (self.check_related('organization', Organization, data, role_field='project_admin_role', mandatory=True) and
+
-                self.check_related('credential', Credential, data, role_field='use_role'))
+        if data.get('default_environment'):
+            ee = get_object_from_data('default_environment', ExecutionEnvironment, data)
+            if not self.user.can_access(ExecutionEnvironment, 'read', ee):
+                return False
+
+        return (
+            self.check_related('organization', Organization, data, role_field='project_admin_role', mandatory=True) and
+            self.check_related('credential', Credential, data, role_field='use_role')
+        )
 
     @check_superuser
     def can_change(self, obj, data):
-        return (self.check_related('organization', Organization, data, obj=obj, role_field='project_admin_role') and
+        if data and data.get('default_environment'):
-                self.user in obj.admin_role and
+            ee = get_object_from_data('default_environment', ExecutionEnvironment, data, obj=obj)
-                self.check_related('credential', Credential, data, obj=obj, role_field='use_role'))
+            if not self.user.can_access(ExecutionEnvironment, 'read', ee):
+                return False
+
+        return (
+            self.check_related('organization', Organization, data, obj=obj, role_field='project_admin_role') and
+            self.user in obj.admin_role and
+            self.check_related('credential', Credential, data, obj=obj, role_field='use_role')
+        )
 
     @check_superuser
     def can_start(self, obj, validate_license=True):
@@ -1497,6 +1517,10 @@ class JobTemplateAccess(NotificationAttachMixin, BaseAccess):
             if self.user not in inventory.use_role:
                 return False
 
+        ee = get_value(ExecutionEnvironment, 'execution_environment')
+        if ee and not self.user.can_access(ExecutionEnvironment, 'read', ee):
+            return False
+
         project = get_value(Project, 'project')
         # If the user has admin access to the project (as an org admin), should
         # be able to proceed without additional checks.
@@ -1544,6 +1568,11 @@ class JobTemplateAccess(NotificationAttachMixin, BaseAccess):
         if self.changes_are_non_sensitive(obj, data):
             return True
 
+        if data.get('execution_environment'):
+            ee = get_object_from_data('execution_environment', ExecutionEnvironment, data)
+            if not self.user.can_access(ExecutionEnvironment, 'read', ee):
+                return False
+
         for required_field, cls in (('inventory', Inventory), ('project', Project)):
             is_mandatory = True
             if not getattr(obj, '{}_id'.format(required_field)):
@@ -1974,6 +2003,11 @@ class WorkflowJobTemplateAccess(NotificationAttachMixin, BaseAccess):
         if not data:  # So the browseable API will work
             return Organization.accessible_objects(self.user, 'workflow_admin_role').exists()
 
+        if data.get('execution_environment'):
+            ee = get_object_from_data('execution_environment', ExecutionEnvironment, data)
+            if not self.user.can_access(ExecutionEnvironment, 'read', ee):
+                return False
+
         return (
             self.check_related('organization', Organization, data, role_field='workflow_admin_role', mandatory=True) and
             self.check_related('inventory', Inventory, data, role_field='use_role')
@@ -2023,6 +2057,11 @@ class WorkflowJobTemplateAccess(NotificationAttachMixin, BaseAccess):
         if self.user.is_superuser:
             return True
 
+        if data and data.get('execution_environment'):
+            ee = get_object_from_data('execution_environment', ExecutionEnvironment, data)
+            if not self.user.can_access(ExecutionEnvironment, 'read', ee):
+                return False
+
         return (
             self.check_related('organization', Organization, data, role_field='workflow_admin_role', obj=obj) and
             self.check_related('inventory', Inventory, data, role_field='use_role', obj=obj) and