3.7 library(http/http_authenticate): Authenticate HTTP connections using 401 headers
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Availability::- use_module(library(http/http_authenticate)).
Source[nondet]http_current_user(+File, ?User, ?Fields)
True when User is present in the htpasswd file File and Fields provides the additional fields.
Fields are the fields from the password file File, converted using name/2, which means that numeric values are passed as numbers and other fields as atoms. The password hash is the first element of Fields and is a string.