gksu-polkit gets pipe support

One of the features I really wanted to get into gksu-policykit early was working correctly with pipes. With the current gksu you cannot do something such as echo blah | gksu tr a-z A-Z. It is actually very hard to work correctly with input/output with su and sudo bellow. I do think it also has something to do with me not being too clever in UNIX file descriptors at the time I originally planned how gksu works. I did get an email from someone at Sun offering to write support for that who never mailed me again, but anyway…

gksu-policykit is currently able to get all the input and output forwarded to/from the process by using an interface similar to glib’s g_spawn_async_with_pipes. Here’s what we are able to do already:

$ echo test string | ./gksu/gksu-polkit /usr/bin/tr a-z A-Z
TEST STRING
$

It’s impressive to me that all the input and output goes over DBus quite nicely.