27 lines
905 B
Scheme
27 lines
905 B
Scheme
#lang scheme/base
|
|
(require mzlib/contract
|
|
mzlib/plt-match
|
|
net/base64)
|
|
(require "../private/request-structs.ss")
|
|
|
|
(define (extract-user-pass headers)
|
|
(match (headers-assq* #"Authorization" headers)
|
|
[#f #f]
|
|
[(struct header (_ basic-credentials))
|
|
(cond
|
|
[(and (basic? basic-credentials)
|
|
(regexp-match #rx"([^:]*):(.*)"
|
|
(base64-decode (subbytes basic-credentials 6 (bytes-length basic-credentials)))))
|
|
=> (lambda (user-pass)
|
|
(cons (cadr user-pass) (caddr user-pass)))]
|
|
[else #f])]))
|
|
|
|
;; basic?: bytes -> (or/c (listof bytes) #f)
|
|
;; does the second part of the authorization header start with #"Basic "
|
|
(define basic?
|
|
(let ([rx (byte-regexp #"^Basic .*")])
|
|
(lambda (a) (regexp-match rx a))))
|
|
|
|
(provide/contract
|
|
[extract-user-pass ((listof header?) . -> . (or/c false/c (cons/c bytes? bytes?)))])
|