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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
|
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2010, 2011, 2012, 2013, 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2015 Alex Kost <alezost@gmail.com>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix 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 General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (guix upstream)
#:use-module (guix records)
#:use-module (guix utils)
#:use-module ((guix download)
#:select (download-to-store))
#:use-module (guix gnupg)
#:use-module (guix packages)
#:use-module (guix ui)
#:use-module (guix base32)
#:use-module (guix gexp)
#:use-module (guix store)
#:use-module ((guix derivations)
#:select (built-derivations derivation->output-path))
#:use-module (guix monads)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-9)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-26)
#:use-module (ice-9 match)
#:use-module (ice-9 regex)
#:export (upstream-source
upstream-source?
upstream-source-package
upstream-source-version
upstream-source-urls
upstream-source-signature-urls
upstream-source-archive-types
coalesce-sources
upstream-updater
upstream-updater?
upstream-updater-name
upstream-updater-description
upstream-updater-predicate
upstream-updater-latest
lookup-updater
download-tarball
package-latest-release
package-latest-release*
package-update
update-package-source))
;;; Commentary:
;;;
;;; This module provides tools to represent and manipulate a upstream source
;;; code, and to auto-update package recipes.
;;;
;;; Code:
;; Representation of upstream's source. There can be several URLs--e.g.,
;; tar.gz, tar.gz, etc. There can be correspond signature URLs, one per
;; source URL.
(define-record-type* <upstream-source>
upstream-source make-upstream-source
upstream-source?
(package upstream-source-package) ;string
(version upstream-source-version) ;string
(urls upstream-source-urls) ;list of strings
(signature-urls upstream-source-signature-urls ;#f | list of strings
(default #f)))
(define (upstream-source-archive-types release)
"Return the available types of archives for RELEASE---a list of strings such
as \"gz\" or \"xz\"."
(map file-extension (upstream-source-urls release)))
(define (coalesce-sources sources)
"Coalesce the elements of SOURCES, a list of <upstream-source>, that
correspond to the same version."
(define (same-version? r1 r2)
(string=? (upstream-source-version r1) (upstream-source-version r2)))
(define (release>? r1 r2)
(version>? (upstream-source-version r1) (upstream-source-version r2)))
(fold (lambda (release result)
(match result
((head . tail)
(if (same-version? release head)
(cons (upstream-source
(inherit release)
(urls (append (upstream-source-urls release)
(upstream-source-urls head)))
(signature-urls
(let ((one (upstream-source-signature-urls release))
(two (upstream-source-signature-urls head)))
(and one two (append one two)))))
tail)
(cons release result)))
(()
(list release))))
'()
(sort sources release>?)))
;;;
;;; Auto-update.
;;;
(define-record-type* <upstream-updater>
upstream-updater make-upstream-updater
upstream-updater?
(name upstream-updater-name)
(description upstream-updater-description)
(pred upstream-updater-predicate)
(latest upstream-updater-latest))
(define (lookup-updater package updaters)
"Return an updater among UPDATERS that matches PACKAGE, or #f if none of
them matches."
(any (match-lambda
(($ <upstream-updater> _ _ pred latest)
(and (pred package) latest)))
updaters))
(define (package-latest-release package updaters)
"Return an upstream source to update PACKAGE, a <package> object, or #f if
none of UPDATERS matches PACKAGE. It is the caller's responsibility to ensure
that the returned source is newer than the current one."
(match (lookup-updater package updaters)
((? procedure? latest-release)
(latest-release package))
(_ #f)))
(define (package-latest-release* package updaters)
"Like 'package-latest-release', but ensure that the return source is newer
than that of PACKAGE."
(match (package-latest-release package updaters)
((and source ($ <upstream-source> name version))
(and (version>? version (package-version package))
source))
(_
#f)))
(define (uncompressed-tarball name tarball)
"Return a derivation that decompresses TARBALL."
(define (ref package)
(module-ref (resolve-interface '(gnu packages compression))
package))
(define compressor
(cond ((or (string-suffix? ".gz" tarball)
(string-suffix? ".tgz" tarball))
(file-append (ref 'gzip) "/bin/gzip"))
((string-suffix? ".bz2" tarball)
(file-append (ref 'bzip2) "/bin/bzip2"))
((string-suffix? ".xz" tarball)
(file-append (ref 'xz) "/bin/xz"))
((string-suffix? ".lz" tarball)
(file-append (ref 'lzip) "/bin/lzip"))
(else
(error "unknown archive type" tarball))))
(gexp->derivation (file-sans-extension name)
#~(begin
(copy-file #+tarball #+name)
(and (zero? (system* #+compressor "-d" #+name))
(copy-file #+(file-sans-extension name)
#$output)))))
(define* (download-tarball store url signature-url
#:key (key-download 'interactive))
"Download the tarball at URL to the store; check its OpenPGP signature at
SIGNATURE-URL, unless SIGNATURE-URL is false. On success, return the tarball
file name; return #f on failure (network failure or authentication failure).
KEY-DOWNLOAD specifies a download policy for missing OpenPGP keys; allowed
values: 'interactive' (default), 'always', and 'never'."
(let ((tarball (download-to-store store url)))
(if (not signature-url)
tarball
(let* ((sig (download-to-store store signature-url))
;; Sometimes we get a signature over the uncompressed tarball.
;; In that case, decompress the tarball in the store so that we
;; can check the signature.
(data (if (string-prefix? (basename url)
(basename signature-url))
tarball
(run-with-store store
(mlet %store-monad ((drv (uncompressed-tarball
(basename url) tarball)))
(mbegin %store-monad
(built-derivations (list drv))
(return (derivation->output-path drv)))))))
(ret (gnupg-verify* sig data #:key-download key-download)))
(if ret
tarball
(begin
(warning (_ "signature verification failed for `~a'~%")
url)
(warning (_ "(could be because the public key is not in your keyring)~%"))
#f))))))
(define (find2 pred lst1 lst2)
"Like 'find', but operate on items from both LST1 and LST2. Return two
values: the item from LST1 and the item from LST2 that match PRED."
(let loop ((lst1 lst1) (lst2 lst2))
(match lst1
((head1 . tail1)
(match lst2
((head2 . tail2)
(if (pred head1 head2)
(values head1 head2)
(loop tail1 tail2)))))
(()
(values #f #f)))))
(define* (package-update store package updaters
#:key (key-download 'interactive))
"Return the new version and the file name of the new version tarball for
PACKAGE, or #f and #f when PACKAGE is up-to-date. KEY-DOWNLOAD specifies a
download policy for missing OpenPGP keys; allowed values: 'always', 'never',
and 'interactive' (default)."
(match (package-latest-release* package updaters)
(($ <upstream-source> _ version urls signature-urls)
(let*-values (((name)
(package-name package))
((archive-type)
(match (and=> (package-source package) origin-uri)
((? string? uri)
(file-extension (basename uri)))
(_
"gz")))
((url signature-url)
(find2 (lambda (url sig-url)
;; Some URIs lack a file extension, like
;; 'https://crates.io/???/0.1/download'. In that
;; case, pick the first URL.
(or (not archive-type)
(string-suffix? archive-type url)))
urls
(or signature-urls (circular-list #f)))))
(let ((tarball (download-tarball store url signature-url
#:key-download key-download)))
(values version tarball))))
(#f
(values #f #f))))
(define (update-package-source package version hash)
"Modify the source file that defines PACKAGE to refer to VERSION,
whose tarball has SHA256 HASH (a bytevector). Return the new version string
if an update was made, and #f otherwise."
(define (update-expression expr old-version version old-hash hash)
;; Update package expression EXPR, replacing occurrences OLD-VERSION by
;; VERSION and occurrences of OLD-HASH by HASH (base32 representation
;; thereof).
(let ((old-hash (bytevector->nix-base32-string old-hash))
(hash (bytevector->nix-base32-string hash)))
(string-replace-substring
(string-replace-substring expr old-hash hash)
old-version version)))
(let ((name (package-name package))
(version-loc (package-field-location package 'version)))
(if version-loc
(let* ((loc (package-location package))
(old-version (package-version package))
(old-hash (origin-sha256 (package-source package)))
(file (and=> (location-file loc)
(cut search-path %load-path <>))))
(if file
(and (edit-expression
;; Be sure to use absolute filename.
(assq-set! (location->source-properties loc)
'filename file)
(cut update-expression <>
old-version version old-hash hash))
version)
(begin
(warning (_ "~a: could not locate source file")
(location-file loc))
#f)))
(begin
(format (current-error-port)
(_ "~a: ~a: no `version' field in source; skipping~%")
(location->string (package-location package))
name)))))
;;; upstream.scm ends here
|