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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/>.
(define-module (webid-oidc simulation)
#:use-module ((webid-oidc client) #:prefix client:)
#:use-module (webid-oidc server endpoint)
#:use-module (webid-oidc web-i18n)
#:use-module (webid-oidc errors)
#:use-module ((webid-oidc parameters) #:prefix p:)
#:use-module ((webid-oidc server create) #:prefix server:)
#:use-module (web uri)
#:use-module (web request)
#:use-module (web response)
#:use-module (srfi srfi-9)
#:use-module (ice-9 receive)
#:use-module (ice-9 optargs)
#:use-module (ice-9 match)
#:use-module (ice-9 control)
#:use-module (srfi srfi-26)
#:use-module (sxml simple)
#:use-module (oop goops)
#:export
(
<simulation>
endpoint
log
scroll-log!
request
get
post
grant-authorization
)
#:declarative? #t)
(define-class <simulation> ()
(endpoint #:init-keyword #:endpoint #:getter endpoint)
(log-rev #:getter log-rev #:init-value '()))
(define-method (log (simulation <simulation>))
(reverse (log-rev simulation)))
(define-method (scroll-log! (simulation <simulation>))
(let ((the-log (log simulation)))
(slot-set! simulation 'log-rev '())
the-log))
(define* (request simulation uri
#:key
(method 'GET)
(body #f)
(version '(1 . 1))
(headers '()))
(let ((rq
(build-request uri
#:method method
#:version version
#:headers headers
#:port (open-output-string)))
(rq-body body))
(receive (response response-body)
(let/ec return
(with-exception-handler
(lambda (error)
(when (web-exception? error)
(return
(build-response #:code (web-exception-code error)
#:reason-phrase (web-exception-reason-phrase error)
#:headers `((content-type application/xhtml-xml)))
(call-with-output-string
(cute sxml->xml
`(*TOP*
(*PI* xml "version=\"1.0\" encoding=\"utf-8\"")
(html (@ (xmlns "http://www.w3.org/1999/xhtml")
(xml:lang ,(W_ "xml-lang|en")))
(head
(title ,(W_ "An error happened…")))
(body
,(call-with-input-string
(format #f (W_ "<p>Sorry, an error happened.</p>"))
xml->sxml)
,(user-message-sxml error))))
<>))))
;; Other kind of exception
(raise-exception error))
(lambda ()
(receive (response response-body response-meta)
(handle (endpoint simulation) rq rq-body)
(values response response-body)))))
(unless (response-date response)
;; We need to set a date.
(set! response
(build-response #:version (response-version response)
#:code (response-code response)
#:reason-phrase (response-reason-phrase response)
#:headers `((date . ,((p:current-date)))
,@(response-headers response))
#:port (response-port response))))
(slot-set! simulation 'log-rev
`((,rq ,rq-body ,response ,response-body)
,@(slot-ref simulation 'log-rev)))
(values response response-body))))
(define* (get simulation uri . args)
(apply request simulation uri #:method 'GET args))
(define* (post simulation uri . args)
(apply request simulation uri #:method 'POST args))
(define (grant-authorization simulation authorization-uri)
(receive (response response-body)
(request simulation authorization-uri
#:method 'POST
#:body "password=password"
#:headers '((content-type application/x-www-form-urlencoded)))
(unless (and (eqv? (response-code response) 302)
(response-location response)
(uri-query (response-location response))
(string-prefix? "code=" (uri-query (response-location response))))
(fail (format #f (G_ "invalid credentials: response ~s ~s")
(response-code response)
(response-reason-phrase response))))
(let* ((uri (response-location response))
(query (uri-query uri))
(code (substring query (string-length "code="))))
code)))
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