We have a need to retrieve user groups which have read permissions for a document. We know the URL of the document. The following Permissions service provides the groups which has access, but it expects either a site URL or a list URL. We have a document URL. Is there any other service which provides permissions of a document. Or alternatively, is there a way to find out the list provided we know the document URL.
Permissions Service - http://<server-url>/_vti_bin/permissions.asmx
Thanks!