Present the user with a login interface before the exam begins.
password_auth()
requests the user to enter a username and password.
ui_token_auth()
requires the user to enter only an access token.
password_auth( users, username_label = "Username", password_label = "Password", title = "Login", button_label = "Login", username_empty = "Username cannot be empty.", password_empty = "Passwort cannot be empty.", unauthorized = "The username/password are incorrect." ) ui_token_auth( users, token_label = "Access token", title = "Login", button_label = "Login", token_empty = "Access token cannot be empty.", unauthorized = "The token is incorrect." )
users | a data frame with user authentication information. See below for details. |
---|---|
username_label | label for the username input field. |
password_label | label for the password input field. |
title | title of the dialog. |
button_label | label for the login button. |
username_empty | error messages for empty username field. |
password_empty | error messages for empty password field. |
unauthorized | error message for incorrect username/password. |
token_label | label for the token input field. |
token_empty | error messages for empty token field. |
The password_auth()
authentication provider
matches the given username and password against columns username and password in data frame users
.
The password column must contain hashed passwords created with sodium::password_store()
(e.g., sodium::password_store("password")
, or a SHA-256 HMAC created with digest::hmac()
(digest::hmac("exam_id", "password", algo = "sha256")
).
The ui_token_auth()
authentication provider
matches the given token and against column token in data frame users
.
The token can be any character data.
For both authentication providers, if the users
data frame also contains columns display_name
and/or grading, they are added to the user object
(and used as described in the authentication provider documentation).
Other access configuration:
authentication_provider
,
configure_attempts()
,
rsconnect_auth()