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1e43ab2c | 1 | ;;; GNU Guix --- Functional package management for GNU |
62b9d3d4 | 2 | ;;; Copyright © 2019, 2020 Ludovic Courtès <ludo@gnu.org> |
1e43ab2c LC |
3 | ;;; |
4 | ;;; This file is part of GNU Guix. | |
5 | ;;; | |
6 | ;;; GNU Guix is free software; you can redistribute it and/or modify it | |
7 | ;;; under the terms of the GNU General Public License as published by | |
8 | ;;; the Free Software Foundation; either version 3 of the License, or (at | |
9 | ;;; your option) any later version. | |
10 | ;;; | |
11 | ;;; GNU Guix is distributed in the hope that it will be useful, but | |
12 | ;;; WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | ;;; GNU General Public License for more details. | |
15 | ;;; | |
16 | ;;; You should have received a copy of the GNU General Public License | |
17 | ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. | |
18 | ||
19 | ;;; | |
20 | ;;; Authenticate a range of commits. | |
21 | ;;; | |
22 | ||
23 | (use-modules (git) | |
24 | (guix git) | |
25 | (guix gnupg) | |
26 | (guix utils) | |
787766ed | 27 | ((guix build utils) #:select (mkdir-p)) |
1e43ab2c LC |
28 | (guix i18n) |
29 | (guix progress) | |
30 | (srfi srfi-1) | |
31 | (srfi srfi-11) | |
32 | (srfi srfi-26) | |
33 | (srfi srfi-34) | |
34 | (srfi srfi-35) | |
787766ed | 35 | (rnrs io ports) |
1e43ab2c | 36 | (ice-9 match) |
787766ed LC |
37 | (ice-9 format) |
38 | (ice-9 pretty-print)) | |
1e43ab2c LC |
39 | |
40 | \f | |
41 | (define %committers | |
42 | ;; List of committers. These are the user names found on | |
43 | ;; <https://savannah.gnu.org/project/memberlist.php?group=guix> along with | |
44 | ;; the fingerprint of the signing (sub)key. | |
45 | ;; | |
46 | ;; TODO: Replace this statically-defined list by an in-repo list. | |
47 | '(("andreas" | |
48 | "AD17 A21E F8AE D8F1 CC02 DBD9 F7D5 C9BF 765C 61E3") | |
49 | ("ajgrf" | |
50 | "2A39 3FFF 68F4 EF7A 3D29 12AF 6F51 20A0 22FB B2D5") | |
51 | ("alexvong1995" | |
52 | "306F CB8F 2C01 C25D 29D3 0556 61EF 502E F602 52F2") | |
53 | ("alezost" | |
54 | "4FB9 9F49 2B12 A365 7997 E664 8246 0C08 2A0E E98F") | |
55 | ("ambrevar" | |
56 | "50F3 3E2E 5B0C 3D90 0424 ABE8 9BDC F497 A4BB CC7F") | |
57 | ("apteryx" | |
58 | "27D5 86A4 F890 0854 329F F09F 1260 E464 82E6 3562") | |
59 | ("arunisaac" | |
60 | "7F73 0343 F2F0 9F3C 77BF 79D3 2E25 EE8B 6180 2BB3") | |
61 | ("atheia" | |
b2504b12 | 62 | ;; primary: "3B12 9196 AE30 0C3C 0E90 A26F A715 5567 3271 9948" |
05f8a143 | 63 | "9A2B 401E D001 0650 1584 BAAC 8BC4 F447 6E8A 8E00") |
1e43ab2c LC |
64 | ("bavier" |
65 | ;; primary: "34FF 38BC D151 25A6 E340 A0B5 3453 2F9F AFCA 8B8E" | |
66 | "A0C5 E352 2EF8 EF5C 64CD B7F0 FD73 CAC7 19D3 2566") | |
67 | ("beffa" | |
68 | "3774 8024 880F D3FF DCA2 C9AB 5893 6E0E 2F1B 5A4C") | |
69 | ("benwoodcroft" | |
70 | "BCF8 F737 2CED 080A 67EB 592D 2A6A D9F4 AAC2 0DF6") | |
71 | ("biscuolo" | |
72 | "45CC 63B8 5258 C9D5 5F34 B239 D37D 0EA7 CECC 3912") | |
73 | ("boskovits" | |
74 | "7988 3B9F 7D6A 4DBF 3719 0367 2506 A96C CF63 0B21") | |
75 | ("brettgilio" | |
76 | "DFC0 C7F7 9EE6 0CA7 AE55 5E19 6722 43C4 A03F 0EEE") | |
77 | ("carl" | |
78 | ;; primary: "0401 7A2A 6D9A 0CCD C81D 8EC2 96AB 007F 1A7E D999" | |
79 | "09CD D25B 5244 A376 78F6 EEA8 0CC5 2153 1979 91A5") | |
80 | ("cbaines" | |
81 | "3E89 EEE7 458E 720D 9754 E0B2 5E28 A33B 0B84 F577") | |
82 | ("civodul" | |
83 | "3CE4 6455 8A84 FDC6 9DB4 0CFB 090B 1199 3D9A EBB5") | |
84 | ("cwebber" | |
85 | "510A 8628 E2A7 7678 8F8C 709C 4BC0 2592 5FF8 F4D3") | |
86 | ("dannym" | |
87 | ;; primary: "295A F991 6F46 F8A1 34B0 29DA 8086 3842 F0FE D83B" | |
88 | "76CE C6B1 7274 B465 C02D B3D9 E71A 3554 2C30 BAA5") | |
89 | ("davexunit" | |
90 | "B3C0 DB4D AD73 BA5D 285E 19AE 5143 0234 CEFD 87C3") | |
91 | ("davexunit (2nd)" ;FIXME: to be confirmed! | |
92 | "8CCB A7F5 52B9 CBEA E1FB 2915 8328 C747 0FF1 D807") | |
62b9d3d4 LC |
93 | ("daviwil" |
94 | "53C4 1E6E 41AA FE55 335A CA5E 446A 2ED4 D940 BF14") | |
1e43ab2c LC |
95 | ("dvc" |
96 | "6909 6DFD D702 8BED ACC5 884B C5E0 51C7 9C0B ECDB") | |
97 | ("dvc (old)" | |
98 | "5F43 B681 0437 2F4B A898 A64B 33B9 E9FD E28D 2C23") | |
99 | ("efraim" | |
100 | "A28B F40C 3E55 1372 662D 14F7 41AA E7DC CA3D 8351") | |
101 | ("efraim (old)" | |
102 | "9157 41FE B22F A4E3 3B6E 8F8D F4C1 D391 7EAC EE93") | |
1e30d4e0 LC |
103 | ("glv" |
104 | ;; primary: "2453 02B1 BAB1 F867 FDCA 96BC 8F3F 861F 82EB 7A9A" | |
105 | "CBC5 9C66 EC27 B971 7940 6B3E 6BE8 208A DF21 FE3F") | |
1e43ab2c LC |
106 | ("hoebjo" |
107 | "2219 43F4 9E9F 276F 9499 3382 BF28 6CB6 593E 5FFD") | |
108 | ("htgoebel" | |
109 | "B943 509D 633E 80DD 27FC 4EED 634A 8DFF D3F6 31DF") | |
110 | ("ipetkov" | |
111 | "7440 26BA 7CA3 C668 E940 1D53 0B43 1E98 3705 6942") | |
112 | ("iyzsong" | |
113 | ;; primary: "66A5 6D9C 9A98 BE7F 719A B401 2652 5665 AE72 7D37" | |
114 | "0325 78A6 8298 94E7 2AA2 66F5 D415 BF25 3B51 5976") | |
115 | ||
116 | ;; https://lists.gnu.org/archive/html/guix-devel/2018-04/msg00229.html | |
117 | ("janneke (old)" | |
118 | "DB34 CB51 D25C 9408 156F CDD6 A12F 8797 8D70 1B99") | |
119 | ("janneke" | |
120 | "1A85 8392 E331 EAFD B8C2 7FFB F3C1 A0D9 C1D6 5273") | |
121 | ||
122 | ("jlicht" | |
123 | ;; primary: "1BA4 08C5 8BF2 0EA7 3179 635A 865D C0A3 DED9 B5D0" | |
124 | "E31D 9DDE EBA5 4A14 8A20 4550 DA45 97F9 47B4 1025") | |
125 | ("jmd" | |
126 | "8797 A26D 0854 2EAB 0285 A290 8A67 719C 2DE8 27B3") | |
127 | ("kkebreau" | |
128 | "83B6 703A DCCA 3B69 4BCE 2DA6 E6A5 EE3C 1946 7A0D") | |
129 | ("leungbk" | |
130 | "45E5 75FA 53EA 8BD6 1BCE 0B4E 3ADC 75F0 13D6 78F9") | |
131 | ("lfam" | |
132 | ;; primary: "4F71 6F9A 8FA2 C80E F1B5 E1BA 5E35 F231 DE1A C5E0" | |
133 | "B051 5948 F1E7 D3C1 B980 38A0 2646 FA30 BACA 7F08") | |
134 | ("lsl88" | |
135 | "2AE3 1395 932B E642 FC0E D99C 9BED 6EDA 32E5 B0BC") | |
d5a96414 LC |
136 | ("mab" |
137 | "BE62 7373 8E61 6D6D 1B3A 08E8 A21A 0202 4881 6103") | |
1e43ab2c LC |
138 | ("marusich" |
139 | "CBF5 9755 CBE7 E7EF EF18 3FB1 DD40 9A15 D822 469D") | |
140 | ("mbakke" | |
141 | "BBB0 2DDF 2CEA F6A8 0D1D E643 A2A0 6DF2 A33A 54FA") | |
142 | ("mhw" | |
143 | "D919 0965 CE03 199E AF28 B3BE 7CEF 2984 7562 C516") | |
144 | ("mothacehe" | |
145 | "4008 6A7E 0252 9B60 31FB 8607 8354 7635 3176 9CA6") | |
146 | ("mthl" | |
147 | "F2A3 8D7E EB2B 6640 5761 070D 0ADE E100 9460 4D37") | |
148 | ("nckx" | |
149 | ;; primary: "F5BC 5534 C36F 0087 B39D 36EF 1C9D C4FE B9DB 7C4B" | |
150 | "7E8F AED0 0944 78EF 72E6 4D16 D889 B0F0 18C5 493C") | |
151 | ("nckx (2nd)" | |
152 | ;; primary: "F5BC 5534 C36F 0087 B39D 36EF 1C9D C4FE B9DB 7C4B" | |
153 | "F5DA 2032 4B87 3D0B 7A38 7672 0DB0 FF88 4F55 6D79") | |
56893b9b LC |
154 | ("niedzejkob" |
155 | "E576 BFB2 CF6E B13D F571 33B9 E315 A758 4613 1564") | |
1e43ab2c LC |
156 | ("ngz" |
157 | "ED0E F1C8 E126 BA83 1B48 5FE9 DA00 B4F0 48E9 2F2D") | |
158 | ("pelzflorian" | |
159 | "CEF4 CB91 4856 BA38 0A20 A7E2 3008 88CB 39C6 3817") | |
160 | ("pgarlick" | |
161 | ;; primary: "B68B DF22 73F9 DA0E 63C1 8A32 515B F416 9242 D600" | |
162 | "C699 ED09 E51B CE89 FD1D A078 AAC7 E891 896B 568A") | |
163 | ("phant0mas" | |
164 | "3A86 380E 58A8 B942 8D39 60E1 327C 1EF3 8DF5 4C32") | |
165 | ("reepca" | |
166 | "74D6 A930 F44B 9B84 9EA5 5606 C166 AA49 5F7F 189C") | |
167 | ("rekado" | |
168 | "BCA6 89B6 3655 3801 C3C6 2150 197A 5888 235F ACAC") | |
169 | ("rhelling" | |
170 | "0154 E1B9 1CC9 D9EF 7764 8DE7 F3A7 27DB 44FC CA36") | |
171 | ("roelj" | |
172 | "17CB 2812 EB63 3DFF 2C7F 0452 C3EC 1DCA 8430 72E1") | |
cd903b04 | 173 | ("roptat (old)" |
1e43ab2c | 174 | "B5FA E628 5B41 3728 B2A0 FAED 4311 1F45 2008 6A0C") |
cd903b04 LC |
175 | ("roptat" |
176 | ;; From commit 2cbede5935eb6a40173bbdf30a9ad22bf7574c22 (Jan. 2020). See | |
177 | ;; <https://lists.gnu.org/archive/html/guix-devel/2020-01/msg00499.html>. | |
178 | "1EFB 0909 1F17 D28C CBF9 B13A 53D4 57B2 D636 EE82") | |
1e43ab2c LC |
179 | ("samplet" |
180 | ;; primary: "D6B0 C593 DA8C 5EDC A44C 7A58 C336 91F7 1188 B004" | |
181 | "A02C 2D82 0EF4 B25B A6B5 1D90 2AC6 A5EC 1C35 7C59") | |
182 | ("sleep_walker" | |
183 | "77DD AD2D 97F5 31BB C0F3 C7FD DFB5 EB09 AA62 5423") | |
184 | ("snape" | |
185 | "F494 72F4 7A59 00D5 C235 F212 89F9 6D48 08F3 59C7") | |
186 | ("snape" | |
187 | "F494 72F4 7A59 00D5 C235 F212 89F9 6D48 08F3 59C7") | |
188 | ("steap" | |
189 | "4E26 CCE9 578E 0828 9855 BDD4 1C79 95D2 D5A3 8336") | |
190 | ("taylanub" | |
191 | "9ADE 9ECF 2B19 C180 9C99 5CEA A1F4 CFCC 5283 6BAC") | |
192 | ||
193 | ;; https://lists.gnu.org/archive/html/guix-devel/2017-03/msg00826.html | |
194 | ("thomasd" | |
195 | "1DD1 681F E285 E07F 11DC 0C59 2E15 A6BC D77D 54FD") | |
196 | ("thomasd (old)" | |
197 | "A5C5 92EA 606E 7106 A6A3 BC08 98B2 1575 91E1 2B08") | |
198 | ||
199 | ("toothbrush" | |
200 | "D712 1D73 A40A 7264 9E43 ED7D F284 6B1A 0D32 C442") | |
201 | ("vagrantc" | |
202 | "6580 7361 3BFC C5C7 E2E4 5D45 DC51 8FC8 7F97 16AA") | |
203 | ("wigust" | |
204 | ;; primary: "C955 CC5D C048 7FB1 7966 40A9 199A F6A3 67E9 4ABB" | |
205 | "7238 7123 8EAC EB63 4548 5857 167F 8EA5 001A FA9C") | |
206 | ("wingo" | |
207 | "FF47 8FB2 64DE 32EC 2967 25A3 DDC0 F535 8812 F8F2"))) | |
208 | ||
209 | (define %authorized-signing-keys | |
210 | ;; Fingerprint of authorized signing keys. | |
211 | (map (match-lambda | |
212 | ((name fingerprint) | |
213 | (string-filter char-set:graphic fingerprint))) | |
214 | %committers)) | |
215 | ||
216 | (define %commits-with-bad-signature | |
217 | ;; Commits with a known-bad signature. | |
218 | '("6a34f4ccc8a5d4a48e25ad3c9c512f8634928b91")) ;2016-12-29 | |
219 | ||
220 | (define %unsigned-commits | |
221 | ;; Commits lacking a signature. | |
222 | '()) | |
223 | ||
224 | (define-syntax-rule (with-temporary-files file1 file2 exp ...) | |
225 | (call-with-temporary-output-file | |
226 | (lambda (file1 port1) | |
227 | (call-with-temporary-output-file | |
228 | (lambda (file2 port2) | |
229 | exp ...))))) | |
230 | ||
231 | (define (commit-signing-key repo commit-id) | |
232 | "Return the OpenPGP key ID that signed COMMIT-ID (an OID). Raise an | |
233 | exception if the commit is unsigned or has an invalid signature." | |
234 | (let-values (((signature signed-data) | |
235 | (catch 'git-error | |
236 | (lambda () | |
237 | (commit-extract-signature repo commit-id)) | |
238 | (lambda _ | |
239 | (values #f #f))))) | |
240 | (if (not signature) | |
241 | (raise (condition | |
242 | (&message | |
243 | (message (format #f (G_ "commit ~a lacks a signature") | |
244 | commit-id))))) | |
245 | (begin | |
246 | (with-fluids ((%default-port-encoding "UTF-8")) | |
247 | (with-temporary-files data-file signature-file | |
248 | (call-with-output-file data-file | |
249 | (cut display signed-data <>)) | |
250 | (call-with-output-file signature-file | |
251 | (cut display signature <>)) | |
252 | ||
253 | (let-values (((status data) | |
254 | (with-error-to-port (%make-void-port "w") | |
255 | (lambda () | |
256 | (gnupg-verify* signature-file data-file | |
257 | #:key-download 'always))))) | |
258 | (match status | |
259 | ('invalid-signature | |
260 | ;; There's a signature but it's invalid. | |
261 | (raise (condition | |
262 | (&message | |
263 | (message (format #f (G_ "signature verification failed \ | |
264 | for commit ~a") | |
265 | (oid->string commit-id))))))) | |
266 | ('missing-key | |
267 | (raise (condition | |
268 | (&message | |
269 | (message (format #f (G_ "could not authenticate \ | |
270 | commit ~a: key ~a is missing") | |
271 | (oid->string commit-id) | |
272 | data)))))) | |
273 | ('valid-signature | |
274 | (match data | |
275 | ((fingerprint . user) | |
276 | fingerprint))))))))))) | |
277 | ||
278 | (define (authenticate-commit repository commit) | |
279 | "Authenticate COMMIT from REPOSITORY and return the signing key fingerprint. | |
280 | Raise an error when authentication fails." | |
281 | (define id | |
282 | (commit-id commit)) | |
283 | ||
284 | (define signing-key | |
285 | (commit-signing-key repository id)) | |
286 | ||
287 | (unless (member signing-key %authorized-signing-keys) | |
288 | (raise (condition | |
289 | (&message | |
290 | (message (format #f (G_ "commit ~a not signed by an authorized \ | |
291 | key: ~a") | |
292 | (oid->string id) signing-key)))))) | |
293 | ||
294 | signing-key) | |
295 | ||
296 | (define* (authenticate-commits repository commits | |
297 | #:key (report-progress (const #t))) | |
298 | "Authenticate COMMITS, a list of commit objects, calling REPORT-PROGRESS for | |
299 | each of them. Return an alist showing the number of occurrences of each key." | |
300 | (parameterize ((current-keyring (string-append (config-directory) | |
301 | "/keyrings/channels/guix.kbx"))) | |
302 | (fold (lambda (commit stats) | |
303 | (report-progress) | |
304 | (let ((signer (authenticate-commit repository commit))) | |
305 | (match (assoc signer stats) | |
306 | (#f (cons `(,signer . 1) stats)) | |
307 | ((_ . count) (cons `(,signer . ,(+ count 1)) | |
308 | (alist-delete signer stats)))))) | |
309 | '() | |
310 | commits))) | |
311 | ||
312 | (define commit-short-id | |
313 | (compose (cut string-take <> 7) oid->string commit-id)) | |
314 | ||
315 | \f | |
787766ed LC |
316 | ;;; |
317 | ;;; Caching. | |
318 | ;;; | |
319 | ||
320 | (define (authenticated-commit-cache-file) | |
321 | "Return the name of the file that contains the cache of | |
322 | previously-authenticated commits." | |
323 | (string-append (cache-directory) "/authentication/channels/guix")) | |
324 | ||
325 | (define (previously-authenticated-commits) | |
326 | "Return the previously-authenticated commits as a list of commit IDs (hex | |
327 | strings)." | |
328 | (catch 'system-error | |
329 | (lambda () | |
330 | (call-with-input-file (authenticated-commit-cache-file) | |
331 | read)) | |
332 | (lambda args | |
333 | (if (= ENOENT (system-error-errno args)) | |
334 | '() | |
335 | (apply throw args))))) | |
336 | ||
337 | (define (cache-authenticated-commit commit-id) | |
338 | "Record in ~/.cache COMMIT-ID and its closure as authenticated (only | |
339 | COMMIT-ID is written to cache, though)." | |
340 | (define %max-cache-length | |
341 | ;; Maximum number of commits in cache. | |
342 | 200) | |
343 | ||
344 | (let ((lst (delete-duplicates | |
345 | (cons commit-id (previously-authenticated-commits)))) | |
346 | (file (authenticated-commit-cache-file))) | |
347 | (mkdir-p (dirname file)) | |
348 | (with-atomic-file-output file | |
349 | (lambda (port) | |
350 | (let ((lst (if (> (length lst) %max-cache-length) | |
351 | (take lst %max-cache-length) ;truncate | |
352 | lst))) | |
353 | (chmod port #o600) | |
354 | (display ";; List of previously-authenticated commits.\n\n" | |
355 | port) | |
356 | (pretty-print lst port)))))) | |
357 | ||
358 | \f | |
1e43ab2c LC |
359 | ;;; |
360 | ;;; Entry point. | |
361 | ;;; | |
362 | ||
363 | (define (git-authenticate args) | |
364 | (define repository | |
365 | (repository-open ".")) | |
366 | ||
367 | (let loop ((args args)) | |
368 | (match args | |
369 | ((_ start end) | |
370 | (define start-commit | |
371 | (commit-lookup repository (string->oid start))) | |
372 | (define end-commit | |
373 | (commit-lookup repository (string->oid end))) | |
374 | ||
787766ed LC |
375 | (define authenticated-commits |
376 | ;; Previously-authenticated commits that don't need to be checked | |
377 | ;; again. | |
378 | (filter-map (lambda (id) | |
379 | (false-if-exception | |
380 | (commit-lookup repository (string->oid id)))) | |
381 | (previously-authenticated-commits))) | |
382 | ||
1e43ab2c | 383 | (define commits |
787766ed LC |
384 | ;; Commits to authenticate, excluding the closure of |
385 | ;; AUTHENTICATED-COMMITS. | |
386 | (commit-difference end-commit start-commit | |
387 | authenticated-commits)) | |
1e43ab2c LC |
388 | |
389 | (define reporter | |
390 | (progress-reporter/bar (length commits))) | |
391 | ||
392 | (format #t (G_ "Authenticating ~a to ~a (~a commits)...~%") | |
393 | (commit-short-id start-commit) | |
394 | (commit-short-id end-commit) | |
395 | (length commits)) | |
396 | ||
397 | (let ((stats (call-with-progress-reporter reporter | |
398 | (lambda (report) | |
399 | (authenticate-commits repository commits | |
400 | #:report-progress report))))) | |
787766ed LC |
401 | (cache-authenticated-commit (oid->string (commit-id end-commit))) |
402 | ||
403 | (unless (null? stats) | |
404 | (format #t (G_ "Signing statistics:~%")) | |
405 | (for-each (match-lambda | |
406 | ((signer . count) | |
407 | (format #t " ~a ~10d~%" signer count))) | |
408 | (sort stats | |
409 | (match-lambda* | |
410 | (((_ . count1) (_ . count2)) | |
411 | (> count1 count2)))))))) | |
1e43ab2c LC |
412 | ((command start) |
413 | (let* ((head (repository-head repository)) | |
414 | (end (reference-target head))) | |
415 | (loop (list command start (oid->string end))))) | |
416 | (_ | |
417 | (format (current-error-port) | |
418 | (G_ "Usage: git-authenticate START [END] | |
419 | ||
420 | Authenticate commits START to END or the current head.\n")))))) | |
421 | ||
422 | ;;; Local Variables: | |
423 | ;;; eval: (put 'with-temporary-files 'scheme-indent-function 2) | |
424 | ;;; End: |