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;; disfluid, implementation of the Solid specification
;; Copyright (C) 2020, 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/>.
(define-module (tests token-endpoint-refresh)
#:use-module (webid-oidc server endpoint)
#:use-module (webid-oidc server endpoint identity-provider)
#:use-module (webid-oidc authorization-code)
#:use-module (webid-oidc refresh-token)
#:use-module (webid-oidc dpop-proof)
#:use-module (webid-oidc jwk)
#:use-module (webid-oidc access-token)
#:use-module (webid-oidc jws)
#:use-module (webid-oidc jti)
#:use-module (webid-oidc testing)
#:use-module ((webid-oidc stubs) #:prefix stubs:)
#:use-module ((webid-oidc parameters) #:prefix p:)
#:use-module (web uri)
#:use-module (web request)
#:use-module (web response)
#:use-module (srfi srfi-19)
#:use-module (web response)
#:use-module (ice-9 optargs)
#:use-module (ice-9 receive)
#:use-module (oop goops)
#:duplicates (merge-generics)
#:declarative? #t)
(with-test-environment
"token-endpoint-issue"
(lambda ()
(define key (generate-key #:n-size 2048))
(call-with-output-file (string-append (p:data-home) "/key-file.jwk")
(lambda (port)
(stubs:scm->json
(key->jwk key)
port
#:pretty #t)))
(define client-key (generate-key #:n-size 2048))
(define subject (string->uri "https://token-endpoint-issue.scm/profile/card#me"))
(define client (string->uri "https://token-endpoint-issue.scm/client/card#app"))
(define issuer (string->uri "https://issuer.token-endpoint-issue.scm"))
(define endpoint
(make <token-endpoint>
#:issuer "https://issuer.token-endpoint-issue.scm"
#:key-file (string-append (p:data-home) "/key-file.jwk")))
(define authz
(parameterize ((p:current-date 0))
(issue <authorization-code>
key
#:webid subject
#:client-id client)))
(with-exception-handler
(lambda (exn)
(unless (and (web-exception? exn)
(eqv? (web-exception-code exn) 400))
(raise-exception
(make-exception
(make-exception-with-message
(format #f "the error code should be 400"))
exn))))
(lambda ()
;; The refresh token is fake!
(let ((dpop
(parameterize ((p:current-date 0))
(issue <dpop-proof>
client-key
#:jwk (public-key client-key)
#:htm 'POST
#:htu (string->uri
"https://token-endpoint-issue.scm/token")))))
(parameterize ((p:current-date 0))
(handle endpoint
(build-request (string->uri
"http://localhost:8080/token")
#:headers `((content-type application/x-www-form-urlencoded)
(dpop . ,dpop))
#:method 'POST
#:port #t)
"grant_type=authorization_code&code=fake")))
(exit 3))
#:unwind? #t
#:unwind-for-type &web-exception)
(receive (response response-body . _)
(let ((dpop
(parameterize ((p:current-date 10))
(issue <dpop-proof>
client-key
#:jwk (public-key client-key)
#:htm 'POST
#:htu (string->uri
"https://token-endpoint-issue.scm/token")))))
(parameterize ((p:current-date 10))
(handle endpoint
(build-request (string->uri
"http://localhost:8080/token")
#:headers `((content-type application/x-www-form-urlencoded)
(dpop . ,dpop))
#:method 'POST
#:port #t)
(string-append "grant_type=authorization_code&code=" authz))))
(unless (eq? (response-code response) 200)
(exit 4))
(unless (eq? (car (response-content-type response)) 'application/json)
(exit 5))
(let ((response (stubs:json-string->scm response-body)))
(let ((access-token-enc (assq-ref response 'access_token))
(refresh-token-enc (assq-ref response 'refresh_token)))
(unless access-token-enc
(exit 6))
(unless refresh-token-enc
(exit 7))
(let ((access-token
(parameterize ((p:current-date 20)
(p:anonymous-http-request
(lambda* (uri . args)
(cond
((equal? uri (string->uri "https://issuer.token-endpoint-issue.scm/.well-known/openid-configuration"))
(values (build-response #:headers '((content-type application/json)))
"{
\"jwks_uri\": \"https://token-endpoint-issue.scm/keys\",
\"token_endpoint\": \"https://token-endpoint-issue.scm/token\",
\"authorization_endpoint\": \"https://token-endpoint-issue.scm/authorize\",
\"solid_oidc_supported\": \"https://solidproject.org/TR/solid-oidc\"
}"))
((equal? uri (string->uri "https://token-endpoint-issue.scm/keys"))
(values (build-response #:headers '((content-type application/json)))
(stubs:scm->json-string `((keys . ,(list->vector (list (key->jwk key))))))))
(else
(format (current-error-port) "Unknown URI: ~s\n" (uri->string uri))
(exit 11))))))
(decode <access-token> access-token-enc))))
(unless access-token
(exit 8))
(let ((access-token-cnf/jkt (cnf/jkt access-token)))
(unless access-token-cnf/jkt
(exit 9))
(unless (string=? access-token-cnf/jkt (jkt client-key))
(exit 10)))))))))
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