blob: 8bd3e5bce2b8220a32bdb0559a032de892f22041 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
;; webid-oidc, 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 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 jti)
#:use-module (web request)
#:use-module (web response)
#:use-module (web uri)
#:use-module (web client)
#:use-module (web server)
#:use-module (webid-oidc cache)
#:use-module (ice-9 optargs)
#:use-module (ice-9 receive)
#:use-module (ice-9 i18n)
#:use-module (ice-9 getopt-long)
#:use-module (ice-9 suspendable-ports)
#:use-module (sxml simple)
#:use-module (srfi srfi-19)
#:use-module (rnrs bytevectors))
(define (G_ text)
(let ((out (gettext text)))
(if (string=? out text)
;; No translation, disambiguate
(car (reverse (string-split text #\|)))
out)))
(define* (same-uri? a b #:key (skip-query #f))
(and (equal? (uri-path a) (uri-path b))
(or skip-query (equal? (uri-query a) (uri-query b)))))
(define*-public (make-identity-provider
issuer
key-file
subject
encrypted-password
jwks-uri
authorization-endpoint-uri
token-endpoint-uri
jti-list
#:key
(current-time current-time)
(http-get http-get))
(let ((key
(catch #t
(lambda ()
(call-with-input-file key-file stubs:json->scm))
(lambda error
(format (current-error-port)
(G_ "Warning: generating a new key pair."))
(let ((k (generate-key #:n-size 2048)))
(stubs:call-with-output-file*
key-file
(lambda (port)
(stubs:scm->json k port #:pretty #t)))
k)))))
(let ((alg
(if (eq? (kty key) 'RSA)
'RS256
'ES256)))
(let ((authorization-endpoint
(make-authorization-endpoint subject encrypted-password alg key 120
#:current-time current-time
#:http-get http-get))
(token-endpoint
(make-token-endpoint token-endpoint-uri issuer alg key 3600 jti-list
#:current-time current-time))
(openid-configuration
(make-oidc-configuration jwks-uri
authorization-endpoint-uri
token-endpoint-uri))
(openid-configuration-uri
(build-uri 'https
#:host (uri-host issuer)
#:path "/.well-known/openid-configuration")))
(lambda (request request-body)
(let ((uri (request-uri request))
(current-time (current-time)))
(cond ((same-uri? uri openid-configuration-uri)
(let* ((current-sec (time-second current-time))
(exp-sec (+ current-sec 3600))
(exp (time-utc->date
(make-time time-utc 0 exp-sec))))
(serve-oidc-configuration exp openid-configuration)))
((same-uri? uri jwks-uri)
(let* ((current-sec (time-second current-time))
(exp-sec (+ current-sec 3600))
(exp (time-utc->date
(make-time time-utc 0 exp-sec))))
(serve-jwks exp (make-jwks (list key)))))
((same-uri? uri authorization-endpoint-uri #:skip-query #t)
(authorization-endpoint request request-body))
((same-uri? uri token-endpoint-uri)
(token-endpoint request request-body))
((same-uri? uri subject)
(values
(build-response #:headers '((content-type text/turtle))
#:port #f)
(format #f
"@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
<#~a> a foaf:Person ;
rdfs:comment \"It works. Now you should use another service to serve that resource.\" .
"
(uri-fragment subject))))
(else
(values
(build-response #:code 404
#:reason-phrase "Not Found"
#:headers '((content-type application/xhtml+xml)))
(with-output-to-string
(lambda ()
(sxml->xml
`(*TOP* (*PI* xml "version=\"1.0\" encoding=\"utf-8\"")
(html (@ (xmlns "http://www.w3.org/1999/xhtml")
(xml:lang "en"))
(body
(h1 "Resource not found")
(p "This OpenID Connect identity provider does not know the resource you are requesting."))))))))))))))))
|
