pg_restore and permissions

Is there a simple way to restore a databases from a pg_dump file?
I've got a "pg_dump -F c" from version 7.1.3 and would like to restore
it on a 7.2.1 database server.

However, if I invoke, say, "pg_restore -C -d web web.db", I get the
following error message:

pg_restore: [archiver (db)] could not reconnect to database: FATAL 1:  IDENT authentication failed for user "www-data"

My pg_hba.conf looks like this:

local        all                                           ident sameuser
host         all         127.0.0.1     255.0.0.0           ident sameuser
host         all         0.0.0.0       0.0.0.0             reject

I know how to work around this problem (and did it in the past), but
I'd really like to be able to restore a database using a single
command.  Does such a command exist?

--
Florian Weimer                       Weimer@CERT.Uni-Stuttgart.DE
University of Stuttgart           http://CERT.Uni-Stuttgart.DE/people/fw/
RUS-CERT                          +49-711-685-5973/fax +49-711-685-5898