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package auth
import "net/http"
/*
Request handlers must take AuthenticatedRequest instead of http.Request
*/
type AuthenticatedRequest struct {
http.Request
/*
Authenticated user name. Current API implies that Username is
never empty, which means that authentication is always done
before calling the request handler.
*/
Username string
}
/*
AuthenticatedHandlerFunc is like http.HandlerFunc, but takes
AuthenticatedRequest instead of http.Request
*/
type AuthenticatedHandlerFunc func(http.ResponseWriter, *AuthenticatedRequest)
/*
Authenticator wraps an AuthenticatedHandlerFunc with
authentication-checking code.
Typical Authenticator usage is something like:
authenticator := SomeAuthenticator(...)
http.HandleFunc("/", authenticator(my_handler))
Authenticator wrapper checks the user authentication and calls the
wrapped function only after authentication has succeeded. Otherwise,
it returns a handler which initiates the authentication procedure.
*/
type Authenticator func(AuthenticatedHandlerFunc) http.HandlerFunc
type AuthenticatorInterface interface {
Wrap(AuthenticatedHandlerFunc) http.HandlerFunc
}
func JustCheck(auth AuthenticatorInterface, wrapped http.HandlerFunc) http.HandlerFunc {
return auth.Wrap(func(w http.ResponseWriter, ar *AuthenticatedRequest) {
ar.Header.Set("X-Authenticated-Username", ar.Username)
wrapped(w, &ar.Request)
})
}
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