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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 (webid-oidc identity-provider)
#:use-module (webid-oidc errors)
#:use-module (webid-oidc authorization-endpoint)
#:use-module (webid-oidc token-endpoint)
#:use-module (webid-oidc server endpoint)
#:use-module (webid-oidc server endpoint identity-provider)
#:use-module (webid-oidc oidc-configuration)
#:use-module (webid-oidc jwk)
#:use-module ((webid-oidc config) #:prefix cfg:)
#:use-module ((webid-oidc stubs) #:prefix stubs:)
#:use-module ((webid-oidc parameters) #:prefix p:)
#:use-module (webid-oidc jti)
#:use-module (web request)
#:use-module (web response)
#:use-module (web uri)
#:use-module (web server)
#:use-module (webid-oidc cache)
#:use-module (ice-9 optargs)
#:use-module (ice-9 receive)
#:use-module (webid-oidc web-i18n)
#:use-module (ice-9 getopt-long)
#:use-module (ice-9 suspendable-ports)
#:use-module (ice-9 match)
#:use-module (ice-9 exceptions)
#:use-module (sxml simple)
#:use-module (sxml match)
#:use-module (srfi srfi-19)
#:use-module (srfi srfi-26)
#:use-module (rnrs bytevectors)
#:use-module (oop goops)
#:duplicates (merge-generics)
#:declarative? #t
#:export
(
make-identity-provider
))
(define-class <default> (<endpoint>))
(define-method (handle (endpoint <default>) request request-body)
(raise-exception
(make-exception
(make-web-exception 404 (W_ "reason-phrase|Not Found"))
(make-user-message
(call-with-input-string
(format #f (W_ "<p>Your request cannot be handled by the identity provider.</p>"))
xml->sxml)))))
(define* (make-identity-provider
issuer
key-file
subject
encrypted-password
jwks-uri
authorization-endpoint-uri
token-endpoint-uri)
(let ((discovery
(make <oidc-discovery>
#:path "/.well-known/openid-configuration"
#:configuration
(make <oidc-configuration>
#:jwks-uri jwks-uri
#:authorization-endpoint authorization-endpoint-uri
#:token-endpoint token-endpoint-uri)))
(authz
(make <authorization-endpoint>
#:subject subject
#:encrypted-password encrypted-password
#:key-file key-file
#:path (uri-path authorization-endpoint-uri)))
(token
(make <token-endpoint>
#:path (uri-path token-endpoint-uri)
#:issuer issuer
#:key-file key-file))
(jwks
(make <jwks-endpoint>
#:path (uri-path jwks-uri)
#:key-file key-file)))
(let ((idp (make <identity-provider>
#:oidc-discovery discovery
#:authorization-endpoint authz
#:token-endpoint token
#:jwks-endpoint jwks
#:default (make <default>))))
(lambda (request request-body)
(parameterize ((web-locale request))
(with-exception-handler
(lambda (exn)
(unless (web-exception? exn)
(raise-exception exn))
(values
(build-response
#:code (web-exception-code exn)
#:reason-phrase (web-exception-reason-phrase exn)
#: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")))
(body
,(call-with-input-string
(format #f (W_ "<h1>The identity provider request failed</h1>"))
xml->sxml)
,(if (user-message? exn)
(user-message-sxml exn)
(call-with-input-string
(format #f (W_ "<p>No more information.</p>"))
xml->sxml)))))
<>))))
(lambda ()
(receive (response response-body response-meta)
(handle idp request request-body)
(values response response-body)))
#:unwind? #t))))))
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