These internal functions are used by the
function to ensure the user has a valid subscription to CliFlo.
cf_login(object, ...) cf_logout(object, msg = TRUE, ...) valid_cfuser(object)
S4 object which inherits the
Display a 'successful logout' message, defaults to
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
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
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