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;; disfluid, implementation of the Solid specification
;; Copyright (C) 2021  Vivien Kraus

;; This program is free software: you can redistribute it and/or modify
;; it under the terms of the GNU Affero General Public License as
;; published by the Free Software Foundation, either version 3 of the
;; License, or (at your option) any later version.

;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU Affero General Public License for more details.

;; You should have received a copy of the GNU Affero General Public License
;; along with this program.  If not, see <https://www.gnu.org/licenses/>.

(use-modules (webid-oidc dpop-proof)
             (webid-oidc access-token)
             (webid-oidc jwk)
             (webid-oidc testing)
             (webid-oidc errors)
             ((webid-oidc stubs) #:prefix stubs:)
             ((webid-oidc parameters) #:prefix p:)
             (web uri)
             (srfi srfi-19)
             (web response))

(with-test-environment
 "dpop-proof-invalid-ath"
 (lambda ()
   (define jwk (generate-key #:n-size 2048))
   (define idp-key (generate-key #:n-size 2048))
   (define cnf (jkt jwk))
   (define access-token
     (parameterize ((p:current-date 10))
       (issue <access-token>
              idp-key
              #:webid (string->uri "https://data.provider/subject")
              #:iss (string->uri "https://identity.provider")
              #:client-key jwk
              #:client-id (string->uri "https://client"))))
   (define proof
     (parameterize ((p:current-date 0))
       (issue <dpop-proof>
              jwk
              #:jwk (public-key jwk)
              #:htm 'GET
              #:htu (string->uri "https://example.com/res?query")
              #:access-token "aaaaaaaaaaaaaaa")))
   (with-exception-handler
       (lambda (error)
         (unless (and (dpop-invalid-ath? error)
                      (equal? (dpop-invalid-ath-hash error)
                              (stubs:hash 'SHA-256 "aaaaaaaaaaaaaaa"))
                      (equal? (dpop-invalid-ath-access-token error)
                              access-token))
           (raise-exception error)))
     (lambda ()
       (parameterize ((p:current-date 10))
         (decode <dpop-proof> proof
                 #:method 'GET
                 #:uri (string->uri "https://example.com/res?query")
                 #:cnf/check cnf
                 #:access-token access-token))
       (exit 2))
     #:unwind? #t
     #:unwind-for-type &dpop-invalid-ath)))