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