cf_login
initiates a curl handle storing the cookies in the current
R session's temporary directory. It then POSTs the user credentials to the
CliFlo login page and stores the resultant h1
heading to check for the
string 'Info'. The cookies are kept for future (immediate) use.
cf_logout
points the curl handle to the existing cookie session
initiated with cf_login
. It reads the header information from the
cliflo logout page to ensure no HTTP error and logs the user out on
cliflo and deletes the cookies. This should be (is) called immediately after
cf_login
in any function requiring a login, using
on.exit
to ensure the user isn't still logged in on the server,
after the function call, for any reason.
valid_cfuser
is the validation function for the cfUser
class
and uses cf_login
to ensure the credentials are authenticated on the
CliFlo server and then (cf_
)logs out immediately afterwards. It also
ensures the user provides exactly one username and password - except for
'public' users.