[sane-devel] permissions for parallel port scanners

[Karl Heinz Kremer]

--ew6BAiZeqk4r7MaW
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

Parallel port scanners are a dying breed. As far as the
EPSON backend is concerned, I don't see any need to=20
update / modify the way the scanner is accessed.=20

If somebody is concerned about security, they should not
connect a par-port scanner. USB scanners are pretty inexpensive
these days, and they can be installed in a safe and portable
way.=20

I will update the man page and list mention the drawbacks
of setuid-root programs, but I think that the mechanisms
of getting the frontends set up and maybe the sane-net work-
around should be documented on the project level and not
for the individual backends.

Karl Heinz

On Sun, Jul 22, 2001 at 03:37:22PM +0200, Oliver Rauch wrote:
> Hello.
>=20
> Now we have some parallel port scanners supported by
> sane and I get several messages with questions how
> the people can access their scanner as user.
>=20
> We need a better way to handle these scanners.
> It really is dangerous to run the frontends as
> root or with suid=3Droot.
>=20
> So I want to ask all authors of backends that support
> parallel port scanners to work out a common way
> (sanei_parallel_*) to talk as user to the scanner.
> These sanei_parallel_* routines should run on
> as much systems as possible (not only linux!).
>=20
> Please also add a text to the manpage of the
> backend how the scanner can be used by user
> and also point out how dangerous it is with
> suid=3Droot!!!
>=20
> An other way would be to connect via sane-net/saned
> to the local machine but as far as I tested that
> still does not work very well due to a bug in sane-net
> or saned.
>=20
> Bye
> Oliver
>=20
> --=20
> Homepage:	http://www.rauch-domain.de
> sane-umax:	http://www.rauch-domain.de/sane-umax
> xsane:		http://www.xsane.org
> E-Mail:		mailto:Oliver.Rauch@rauch-domain.de
> _______________________________________________
> Sane-devel mailing list
> Sane-devel@www.mostang.com
> http://www.mostang.com/mailman/listinfo/sane-devel

--=20
Karl Heinz Kremer                                  khk@khk.net
PGP Key at http://www.freecolormanagement.com/download/khk.asc
EPSON Sane Backend:         http://www.freecolormanagement.com

--ew6BAiZeqk4r7MaW
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: PGP 6.5.8

iQCVAwUBO1qiNR4KmkKPBVxtAQF5AwP/YHhdWXmG6tjnkkrKpzuSxu0uphHGZTUx
zJTrv/VtDtJKAC3lK2XKM3lygF9ybwZUDDXEX16iPt7Il7W/W9r3BuhJxRBiaoQf
ux8juHK/+zd7A7yYX5ij89meNcukt6fQwBphtq/jtpswWF2c/vdYZHvFWcPmeoWi
4t8UpfT1xqA=
=5lNc
-----END PGP SIGNATURE-----

--ew6BAiZeqk4r7MaW--