On Sat, Oct 17, 2020 at 06:32:18PM +0200, Nick Wellnhofer wrote: > On Oct 17, 2020, at 12:24 , Richard W.M. Jones via xml <xml@gnome.org> wrote: > > It seems like libxml2 chose to do this for convenience rather than > > correctness. > > Yes, this is an arbitrary limit introduced to avoid integer overflow. > > > I think it should accept port numbers at least up to > > signed int (the type used to store port numbers), and give an error if > > the port number overflows. > > This is fixed now: > https://gitlab.gnome.org/GNOME/libxml2/-/commit/b46016b8705b041c0678dd45e445dc73674b75d0
Oh that's great thanks. Can confirm it works for me (up to INT_MAX). > > Also could the uri->port field be changed to unsigned int without > > breaking ABI? > > It’s a public struct member, so strictly speaking, no. But the risk > to break stuff seems low. This would allow us to go to 2^32-1 which is the full range of port numbers for AF_VSOCK. ** Stefano ** Do you think this is worth it for the vsock protocol? I'm not sure how often huge port numbers are used - I only hit this bug because I was choosing random port numbers in a test case. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com libguestfs lets you edit virtual machines. Supports shell scripting, bindings from many languages. http://libguestfs.org _______________________________________________ xml mailing list, project page http://xmlsoft.org/ xml@gnome.org https://mail.gnome.org/mailman/listinfo/xml
