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72648326 LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2014 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <curl/curl.h> | |
23 | #include <sys/prctl.h> | |
24 | ||
7079cfef | 25 | #include "sd-daemon.h" |
07630cea | 26 | |
b5efdb8a | 27 | #include "alloc-util.h" |
07630cea | 28 | #include "aufs-util.h" |
72648326 | 29 | #include "btrfs-util.h" |
07630cea | 30 | #include "curl-util.h" |
3ffd4af2 | 31 | #include "fd-util.h" |
0d39fa9c | 32 | #include "fileio.h" |
f4f15635 | 33 | #include "fs-util.h" |
07630cea LP |
34 | #include "hostname-util.h" |
35 | #include "import-common.h" | |
36 | #include "import-util.h" | |
37 | #include "json.h" | |
ff2670ad | 38 | #include "mkdir.h" |
26166c88 | 39 | #include "path-util.h" |
07630cea | 40 | #include "process-util.h" |
dc2c282b LP |
41 | #include "pull-common.h" |
42 | #include "pull-dkr.h" | |
07630cea LP |
43 | #include "pull-job.h" |
44 | #include "rm-rf.h" | |
45 | #include "string-util.h" | |
46 | #include "strv.h" | |
47 | #include "utf8.h" | |
49cf4170 | 48 | #include "web-util.h" |
72648326 | 49 | |
7079cfef LP |
50 | typedef enum DkrProgress { |
51 | DKR_SEARCHING, | |
52 | DKR_RESOLVING, | |
53 | DKR_METADATA, | |
54 | DKR_DOWNLOADING, | |
55 | DKR_COPYING, | |
56 | } DkrProgress; | |
57 | ||
dc2c282b | 58 | struct DkrPull { |
ff2670ad LP |
59 | sd_event *event; |
60 | CurlGlue *glue; | |
72648326 | 61 | |
2c4fb0ea PO |
62 | char *index_protocol; |
63 | char *index_address; | |
64 | ||
ff2670ad LP |
65 | char *index_url; |
66 | char *image_root; | |
72648326 | 67 | |
dc2c282b LP |
68 | PullJob *images_job; |
69 | PullJob *tags_job; | |
70 | PullJob *ancestry_job; | |
71 | PullJob *json_job; | |
72 | PullJob *layer_job; | |
72648326 LP |
73 | |
74 | char *name; | |
2c4fb0ea | 75 | char *reference; |
72648326 | 76 | char *id; |
72648326 | 77 | |
2c4fb0ea | 78 | char *response_digest; |
ff2670ad LP |
79 | char *response_token; |
80 | char **response_registries; | |
72648326 LP |
81 | |
82 | char **ancestry; | |
7079cfef | 83 | unsigned n_ancestry; |
72648326 LP |
84 | unsigned current_ancestry; |
85 | ||
dc2c282b | 86 | DkrPullFinished on_finished; |
ff2670ad | 87 | void *userdata; |
ea1ae8c3 | 88 | |
ff2670ad LP |
89 | char *local; |
90 | bool force_local; | |
26166c88 | 91 | bool grow_machine_directory; |
72648326 | 92 | |
ff2670ad LP |
93 | char *temp_path; |
94 | char *final_path; | |
14ed8b92 | 95 | |
ff2670ad | 96 | pid_t tar_pid; |
72648326 LP |
97 | }; |
98 | ||
99 | #define PROTOCOL_PREFIX "https://" | |
72648326 LP |
100 | |
101 | #define HEADER_TOKEN "X-Do" /* the HTTP header for the auth token */ "cker-Token:" | |
2c4fb0ea PO |
102 | #define HEADER_REGISTRY "X-Do" /* the HTTP header for the registry */ "cker-Endpoints:" |
103 | #define HEADER_DIGEST "Do" /* the HTTP header for the manifest digest */ "cker-Content-Digest:" | |
104 | #define LAYERS_MAX 127 | |
72648326 | 105 | |
dc2c282b | 106 | static void dkr_pull_job_on_finished(PullJob *j); |
72648326 | 107 | |
dc2c282b | 108 | DkrPull* dkr_pull_unref(DkrPull *i) { |
ff2670ad | 109 | if (!i) |
72648326 LP |
110 | return NULL; |
111 | ||
ff2670ad LP |
112 | if (i->tar_pid > 1) { |
113 | (void) kill_and_sigcont(i->tar_pid, SIGKILL); | |
114 | (void) wait_for_terminate(i->tar_pid, NULL); | |
72648326 LP |
115 | } |
116 | ||
dc2c282b LP |
117 | pull_job_unref(i->images_job); |
118 | pull_job_unref(i->tags_job); | |
119 | pull_job_unref(i->ancestry_job); | |
120 | pull_job_unref(i->json_job); | |
121 | pull_job_unref(i->layer_job); | |
72648326 | 122 | |
ff2670ad LP |
123 | curl_glue_unref(i->glue); |
124 | sd_event_unref(i->event); | |
72648326 | 125 | |
ff2670ad | 126 | if (i->temp_path) { |
d9e2daaf | 127 | (void) rm_rf(i->temp_path, REMOVE_ROOT|REMOVE_PHYSICAL|REMOVE_SUBVOLUME); |
ff2670ad LP |
128 | free(i->temp_path); |
129 | } | |
72648326 | 130 | |
ff2670ad | 131 | free(i->name); |
2c4fb0ea | 132 | free(i->reference); |
ff2670ad LP |
133 | free(i->id); |
134 | free(i->response_token); | |
ff2670ad LP |
135 | strv_free(i->ancestry); |
136 | free(i->final_path); | |
2c4fb0ea PO |
137 | free(i->index_address); |
138 | free(i->index_protocol); | |
ff2670ad LP |
139 | free(i->index_url); |
140 | free(i->image_root); | |
141 | free(i->local); | |
142 | free(i); | |
72648326 LP |
143 | |
144 | return NULL; | |
145 | } | |
146 | ||
dc2c282b LP |
147 | int dkr_pull_new( |
148 | DkrPull **ret, | |
ff2670ad LP |
149 | sd_event *event, |
150 | const char *index_url, | |
151 | const char *image_root, | |
dc2c282b | 152 | DkrPullFinished on_finished, |
ff2670ad | 153 | void *userdata) { |
72648326 | 154 | |
dc2c282b | 155 | _cleanup_(dkr_pull_unrefp) DkrPull *i = NULL; |
ff2670ad LP |
156 | char *e; |
157 | int r; | |
72648326 | 158 | |
ff2670ad LP |
159 | assert(ret); |
160 | assert(index_url); | |
72648326 | 161 | |
ff2670ad LP |
162 | if (!http_url_is_valid(index_url)) |
163 | return -EINVAL; | |
72648326 | 164 | |
dc2c282b | 165 | i = new0(DkrPull, 1); |
ff2670ad LP |
166 | if (!i) |
167 | return -ENOMEM; | |
72648326 | 168 | |
ff2670ad LP |
169 | i->on_finished = on_finished; |
170 | i->userdata = userdata; | |
72648326 | 171 | |
ff2670ad LP |
172 | i->image_root = strdup(image_root ?: "/var/lib/machines"); |
173 | if (!i->image_root) | |
174 | return -ENOMEM; | |
72648326 | 175 | |
26166c88 LP |
176 | i->grow_machine_directory = path_startswith(i->image_root, "/var/lib/machines"); |
177 | ||
ff2670ad LP |
178 | i->index_url = strdup(index_url); |
179 | if (!i->index_url) | |
180 | return -ENOMEM; | |
72648326 | 181 | |
ff2670ad LP |
182 | e = endswith(i->index_url, "/"); |
183 | if (e) | |
184 | *e = 0; | |
72648326 | 185 | |
ff2670ad LP |
186 | if (event) |
187 | i->event = sd_event_ref(event); | |
188 | else { | |
189 | r = sd_event_default(&i->event); | |
190 | if (r < 0) | |
191 | return r; | |
192 | } | |
72648326 | 193 | |
ff2670ad LP |
194 | r = curl_glue_new(&i->glue, i->event); |
195 | if (r < 0) | |
196 | return r; | |
72648326 | 197 | |
dc2c282b | 198 | i->glue->on_finished = pull_job_curl_on_finished; |
ff2670ad | 199 | i->glue->userdata = i; |
14ed8b92 | 200 | |
ff2670ad LP |
201 | *ret = i; |
202 | i = NULL; | |
14ed8b92 | 203 | |
ff2670ad | 204 | return 0; |
72648326 LP |
205 | } |
206 | ||
dc2c282b | 207 | static void dkr_pull_report_progress(DkrPull *i, DkrProgress p) { |
7079cfef LP |
208 | unsigned percent; |
209 | ||
210 | assert(i); | |
211 | ||
212 | switch (p) { | |
213 | ||
214 | case DKR_SEARCHING: | |
215 | percent = 0; | |
216 | if (i->images_job) | |
217 | percent += i->images_job->progress_percent * 5 / 100; | |
218 | break; | |
219 | ||
220 | case DKR_RESOLVING: | |
221 | percent = 5; | |
222 | if (i->tags_job) | |
223 | percent += i->tags_job->progress_percent * 5 / 100; | |
224 | break; | |
225 | ||
226 | case DKR_METADATA: | |
227 | percent = 10; | |
228 | if (i->ancestry_job) | |
229 | percent += i->ancestry_job->progress_percent * 5 / 100; | |
230 | if (i->json_job) | |
231 | percent += i->json_job->progress_percent * 5 / 100; | |
232 | break; | |
233 | ||
234 | case DKR_DOWNLOADING: | |
235 | percent = 20; | |
236 | percent += 75 * i->current_ancestry / MAX(1U, i->n_ancestry); | |
237 | if (i->layer_job) | |
238 | percent += i->layer_job->progress_percent * 75 / MAX(1U, i->n_ancestry) / 100; | |
239 | ||
240 | break; | |
241 | ||
242 | case DKR_COPYING: | |
243 | percent = 95; | |
244 | break; | |
245 | ||
246 | default: | |
247 | assert_not_reached("Unknown progress state"); | |
248 | } | |
249 | ||
250 | sd_notifyf(false, "X_IMPORT_PROGRESS=%u", percent); | |
251 | log_debug("Combined progress %u%%", percent); | |
252 | } | |
253 | ||
72648326 LP |
254 | static int parse_id(const void *payload, size_t size, char **ret) { |
255 | _cleanup_free_ char *buf = NULL, *id = NULL, *other = NULL; | |
256 | union json_value v = {}; | |
257 | void *json_state = NULL; | |
258 | const char *p; | |
259 | int t; | |
260 | ||
261 | assert(payload); | |
262 | assert(ret); | |
263 | ||
264 | if (size <= 0) | |
265 | return -EBADMSG; | |
266 | ||
267 | if (memchr(payload, 0, size)) | |
268 | return -EBADMSG; | |
269 | ||
270 | buf = strndup(payload, size); | |
271 | if (!buf) | |
272 | return -ENOMEM; | |
273 | ||
274 | p = buf; | |
275 | t = json_tokenize(&p, &id, &v, &json_state, NULL); | |
276 | if (t < 0) | |
277 | return t; | |
278 | if (t != JSON_STRING) | |
279 | return -EBADMSG; | |
280 | ||
281 | t = json_tokenize(&p, &other, &v, &json_state, NULL); | |
282 | if (t < 0) | |
283 | return t; | |
284 | if (t != JSON_END) | |
285 | return -EBADMSG; | |
286 | ||
91f4347e | 287 | if (!dkr_id_is_valid(id)) |
72648326 LP |
288 | return -EBADMSG; |
289 | ||
290 | *ret = id; | |
291 | id = NULL; | |
292 | ||
293 | return 0; | |
294 | } | |
295 | ||
296 | static int parse_ancestry(const void *payload, size_t size, char ***ret) { | |
297 | _cleanup_free_ char *buf = NULL; | |
298 | void *json_state = NULL; | |
299 | const char *p; | |
300 | enum { | |
301 | STATE_BEGIN, | |
302 | STATE_ITEM, | |
303 | STATE_COMMA, | |
304 | STATE_END, | |
305 | } state = STATE_BEGIN; | |
306 | _cleanup_strv_free_ char **l = NULL; | |
307 | size_t n = 0, allocated = 0; | |
308 | ||
309 | if (size <= 0) | |
310 | return -EBADMSG; | |
311 | ||
312 | if (memchr(payload, 0, size)) | |
313 | return -EBADMSG; | |
314 | ||
315 | buf = strndup(payload, size); | |
316 | if (!buf) | |
317 | return -ENOMEM; | |
318 | ||
319 | p = buf; | |
320 | for (;;) { | |
321 | _cleanup_free_ char *str; | |
322 | union json_value v = {}; | |
323 | int t; | |
324 | ||
325 | t = json_tokenize(&p, &str, &v, &json_state, NULL); | |
326 | if (t < 0) | |
327 | return t; | |
328 | ||
329 | switch (state) { | |
330 | ||
331 | case STATE_BEGIN: | |
332 | if (t == JSON_ARRAY_OPEN) | |
333 | state = STATE_ITEM; | |
334 | else | |
335 | return -EBADMSG; | |
336 | ||
337 | break; | |
338 | ||
339 | case STATE_ITEM: | |
340 | if (t == JSON_STRING) { | |
91f4347e | 341 | if (!dkr_id_is_valid(str)) |
72648326 LP |
342 | return -EBADMSG; |
343 | ||
344 | if (n+1 > LAYERS_MAX) | |
345 | return -EFBIG; | |
346 | ||
347 | if (!GREEDY_REALLOC(l, allocated, n + 2)) | |
348 | return -ENOMEM; | |
349 | ||
350 | l[n++] = str; | |
351 | str = NULL; | |
352 | l[n] = NULL; | |
353 | ||
354 | state = STATE_COMMA; | |
355 | ||
356 | } else if (t == JSON_ARRAY_CLOSE) | |
357 | state = STATE_END; | |
358 | else | |
359 | return -EBADMSG; | |
360 | ||
361 | break; | |
362 | ||
363 | case STATE_COMMA: | |
364 | if (t == JSON_COMMA) | |
365 | state = STATE_ITEM; | |
366 | else if (t == JSON_ARRAY_CLOSE) | |
367 | state = STATE_END; | |
368 | else | |
369 | return -EBADMSG; | |
370 | break; | |
371 | ||
372 | case STATE_END: | |
373 | if (t == JSON_END) { | |
374 | ||
375 | if (strv_isempty(l)) | |
376 | return -EBADMSG; | |
377 | ||
378 | if (!strv_is_uniq(l)) | |
379 | return -EBADMSG; | |
380 | ||
381 | l = strv_reverse(l); | |
382 | ||
383 | *ret = l; | |
384 | l = NULL; | |
385 | return 0; | |
386 | } else | |
387 | return -EBADMSG; | |
388 | } | |
389 | ||
390 | } | |
391 | } | |
392 | ||
dc2c282b | 393 | static const char *dkr_pull_current_layer(DkrPull *i) { |
ff2670ad | 394 | assert(i); |
72648326 | 395 | |
ff2670ad | 396 | if (strv_isempty(i->ancestry)) |
72648326 LP |
397 | return NULL; |
398 | ||
ff2670ad | 399 | return i->ancestry[i->current_ancestry]; |
72648326 LP |
400 | } |
401 | ||
dc2c282b | 402 | static const char *dkr_pull_current_base_layer(DkrPull *i) { |
ff2670ad | 403 | assert(i); |
72648326 | 404 | |
ff2670ad | 405 | if (strv_isempty(i->ancestry)) |
72648326 LP |
406 | return NULL; |
407 | ||
ff2670ad | 408 | if (i->current_ancestry <= 0) |
72648326 LP |
409 | return NULL; |
410 | ||
ff2670ad | 411 | return i->ancestry[i->current_ancestry-1]; |
72648326 LP |
412 | } |
413 | ||
dc2c282b | 414 | static int dkr_pull_add_token(DkrPull *i, PullJob *j) { |
ff2670ad | 415 | const char *t; |
72648326 | 416 | |
ff2670ad LP |
417 | assert(i); |
418 | assert(j); | |
72648326 | 419 | |
ff2670ad | 420 | if (i->response_token) |
63c372cb | 421 | t = strjoina("Authorization: Token ", i->response_token); |
ff2670ad LP |
422 | else |
423 | t = HEADER_TOKEN " true"; | |
72648326 | 424 | |
ff2670ad LP |
425 | j->request_header = curl_slist_new("Accept: application/json", t, NULL); |
426 | if (!j->request_header) | |
427 | return -ENOMEM; | |
72648326 | 428 | |
ff2670ad | 429 | return 0; |
72648326 LP |
430 | } |
431 | ||
2c4fb0ea PO |
432 | static int dkr_pull_add_bearer_token(DkrPull *i, PullJob *j) { |
433 | const char *t = NULL; | |
434 | ||
435 | assert(i); | |
436 | assert(j); | |
437 | ||
438 | if (i->response_token) | |
439 | t = strjoina("Authorization: Bearer ", i->response_token); | |
440 | else | |
441 | return -EINVAL; | |
442 | ||
443 | j->request_header = curl_slist_new("Accept: application/json", t, NULL); | |
444 | if (!j->request_header) | |
445 | return -ENOMEM; | |
446 | ||
447 | return 0; | |
448 | } | |
449 | ||
dc2c282b | 450 | static bool dkr_pull_is_done(DkrPull *i) { |
ff2670ad LP |
451 | assert(i); |
452 | assert(i->images_job); | |
dc2c282b | 453 | if (i->images_job->state != PULL_JOB_DONE) |
ff2670ad | 454 | return false; |
72648326 | 455 | |
dc2c282b | 456 | if (!i->tags_job || i->tags_job->state != PULL_JOB_DONE) |
ff2670ad | 457 | return false; |
72648326 | 458 | |
dc2c282b | 459 | if (!i->ancestry_job || i->ancestry_job->state != PULL_JOB_DONE) |
ff2670ad | 460 | return false; |
72648326 | 461 | |
2c4fb0ea | 462 | if (i->json_job && i->json_job->state != PULL_JOB_DONE) |
ff2670ad | 463 | return false; |
72648326 | 464 | |
dc2c282b | 465 | if (i->layer_job && i->layer_job->state != PULL_JOB_DONE) |
ff2670ad | 466 | return false; |
72648326 | 467 | |
dc2c282b | 468 | if (dkr_pull_current_layer(i)) |
ff2670ad | 469 | return false; |
72648326 | 470 | |
ff2670ad LP |
471 | return true; |
472 | } | |
72648326 | 473 | |
2c4fb0ea | 474 | static int dkr_pull_make_local_copy(DkrPull *i, DkrPullVersion version) { |
ff2670ad | 475 | int r; |
2c4fb0ea | 476 | _cleanup_free_ char *p = NULL; |
72648326 | 477 | |
ff2670ad | 478 | assert(i); |
72648326 | 479 | |
ff2670ad LP |
480 | if (!i->local) |
481 | return 0; | |
72648326 | 482 | |
ff2670ad LP |
483 | if (!i->final_path) { |
484 | i->final_path = strjoin(i->image_root, "/.dkr-", i->id, NULL); | |
485 | if (!i->final_path) | |
5f311f8c | 486 | return -ENOMEM; |
72648326 LP |
487 | } |
488 | ||
2c4fb0ea | 489 | if (version == DKR_PULL_V2) { |
5f311f8c LP |
490 | p = dirname_malloc(i->image_root); |
491 | if (!p) | |
492 | return -ENOMEM; | |
2c4fb0ea PO |
493 | } |
494 | ||
495 | r = pull_make_local_copy(i->final_path, p ?: i->image_root, i->local, i->force_local); | |
ff2670ad LP |
496 | if (r < 0) |
497 | return r; | |
498 | ||
2c4fb0ea | 499 | if (version == DKR_PULL_V2) { |
5bcd08db LP |
500 | char **k; |
501 | ||
2c4fb0ea | 502 | STRV_FOREACH(k, i->ancestry) { |
5bcd08db LP |
503 | _cleanup_free_ char *d; |
504 | ||
505 | d = strjoin(i->image_root, "/.dkr-", *k, NULL); | |
506 | if (!d) | |
507 | return -ENOMEM; | |
508 | ||
509 | r = btrfs_subvol_remove(d, BTRFS_REMOVE_QUOTA); | |
2c4fb0ea PO |
510 | if (r < 0) |
511 | return r; | |
512 | } | |
513 | ||
514 | r = rmdir(i->image_root); | |
515 | if (r < 0) | |
516 | return r; | |
517 | } | |
518 | ||
ff2670ad | 519 | return 0; |
72648326 LP |
520 | } |
521 | ||
dc2c282b | 522 | static int dkr_pull_job_on_open_disk(PullJob *j) { |
ff2670ad | 523 | const char *base; |
dc2c282b | 524 | DkrPull *i; |
ff2670ad | 525 | int r; |
72648326 | 526 | |
ff2670ad LP |
527 | assert(j); |
528 | assert(j->userdata); | |
72648326 | 529 | |
ff2670ad LP |
530 | i = j->userdata; |
531 | assert(i->layer_job == j); | |
532 | assert(i->final_path); | |
533 | assert(!i->temp_path); | |
534 | assert(i->tar_pid <= 0); | |
72648326 | 535 | |
14bcf25c | 536 | r = tempfn_random(i->final_path, NULL, &i->temp_path); |
ff2670ad LP |
537 | if (r < 0) |
538 | return log_oom(); | |
72648326 | 539 | |
ff2670ad | 540 | mkdir_parents_label(i->temp_path, 0700); |
72648326 | 541 | |
dc2c282b | 542 | base = dkr_pull_current_base_layer(i); |
ff2670ad LP |
543 | if (base) { |
544 | const char *base_path; | |
72648326 | 545 | |
63c372cb | 546 | base_path = strjoina(i->image_root, "/.dkr-", base); |
5bcd08db | 547 | r = btrfs_subvol_snapshot(base_path, i->temp_path, BTRFS_SNAPSHOT_FALLBACK_COPY|BTRFS_SNAPSHOT_QUOTA); |
ff2670ad LP |
548 | } else |
549 | r = btrfs_subvol_make(i->temp_path); | |
550 | if (r < 0) | |
551 | return log_error_errno(r, "Failed to make btrfs subvolume %s: %m", i->temp_path); | |
72648326 | 552 | |
8c9cfc28 LP |
553 | (void) import_assign_pool_quota_and_warn(i->temp_path); |
554 | ||
587fec42 | 555 | j->disk_fd = import_fork_tar_x(i->temp_path, &i->tar_pid); |
2c140ded LP |
556 | if (j->disk_fd < 0) |
557 | return j->disk_fd; | |
72648326 | 558 | |
72648326 LP |
559 | return 0; |
560 | } | |
561 | ||
dc2c282b LP |
562 | static void dkr_pull_job_on_progress(PullJob *j) { |
563 | DkrPull *i; | |
7079cfef LP |
564 | |
565 | assert(j); | |
566 | assert(j->userdata); | |
567 | ||
568 | i = j->userdata; | |
569 | ||
dc2c282b | 570 | dkr_pull_report_progress( |
7079cfef LP |
571 | i, |
572 | j == i->images_job ? DKR_SEARCHING : | |
573 | j == i->tags_job ? DKR_RESOLVING : | |
574 | j == i->ancestry_job || j == i->json_job ? DKR_METADATA : | |
575 | DKR_DOWNLOADING); | |
576 | } | |
577 | ||
2c4fb0ea PO |
578 | static void dkr_pull_job_on_finished_v2(PullJob *j); |
579 | ||
580 | static int dkr_pull_pull_layer_v2(DkrPull *i) { | |
581 | _cleanup_free_ char *path = NULL; | |
582 | const char *url, *layer = NULL; | |
583 | int r; | |
584 | ||
585 | assert(i); | |
586 | assert(!i->layer_job); | |
587 | assert(!i->temp_path); | |
588 | assert(!i->final_path); | |
589 | ||
590 | for (;;) { | |
591 | layer = dkr_pull_current_layer(i); | |
592 | if (!layer) | |
593 | return 0; /* no more layers */ | |
594 | ||
595 | path = strjoin(i->image_root, "/.dkr-", layer, NULL); | |
596 | if (!path) | |
597 | return log_oom(); | |
598 | ||
599 | if (laccess(path, F_OK) < 0) { | |
600 | if (errno == ENOENT) | |
601 | break; | |
602 | ||
603 | return log_error_errno(errno, "Failed to check for container: %m"); | |
604 | } | |
605 | ||
606 | log_info("Layer %s already exists, skipping.", layer); | |
607 | ||
608 | i->current_ancestry++; | |
609 | ||
97b11eed | 610 | path = mfree(path); |
2c4fb0ea PO |
611 | } |
612 | ||
613 | log_info("Pulling layer %s...", layer); | |
614 | ||
615 | i->final_path = path; | |
616 | path = NULL; | |
617 | ||
618 | url = strjoina(PROTOCOL_PREFIX, i->response_registries[0], "/v2/", i->name, "/blobs/", layer); | |
619 | r = pull_job_new(&i->layer_job, url, i->glue, i); | |
620 | if (r < 0) | |
621 | return log_error_errno(r, "Failed to allocate layer job: %m"); | |
622 | ||
623 | r = dkr_pull_add_bearer_token(i, i->layer_job); | |
624 | if (r < 0) | |
625 | return log_oom(); | |
626 | ||
627 | i->layer_job->on_finished = dkr_pull_job_on_finished_v2; | |
628 | i->layer_job->on_open_disk = dkr_pull_job_on_open_disk; | |
629 | i->layer_job->on_progress = dkr_pull_job_on_progress; | |
630 | i->layer_job->grow_machine_directory = i->grow_machine_directory; | |
631 | ||
632 | r = pull_job_begin(i->layer_job); | |
633 | if (r < 0) | |
634 | return log_error_errno(r, "Failed to start layer job: %m"); | |
635 | ||
636 | return 0; | |
637 | } | |
638 | ||
dc2c282b | 639 | static int dkr_pull_pull_layer(DkrPull *i) { |
ff2670ad LP |
640 | _cleanup_free_ char *path = NULL; |
641 | const char *url, *layer = NULL; | |
72648326 LP |
642 | int r; |
643 | ||
ff2670ad LP |
644 | assert(i); |
645 | assert(!i->layer_job); | |
646 | assert(!i->temp_path); | |
647 | assert(!i->final_path); | |
72648326 LP |
648 | |
649 | for (;;) { | |
dc2c282b | 650 | layer = dkr_pull_current_layer(i); |
ff2670ad LP |
651 | if (!layer) |
652 | return 0; /* no more layers */ | |
72648326 | 653 | |
ff2670ad | 654 | path = strjoin(i->image_root, "/.dkr-", layer, NULL); |
72648326 LP |
655 | if (!path) |
656 | return log_oom(); | |
657 | ||
658 | if (laccess(path, F_OK) < 0) { | |
659 | if (errno == ENOENT) | |
660 | break; | |
661 | ||
662 | return log_error_errno(errno, "Failed to check for container: %m"); | |
663 | } | |
664 | ||
665 | log_info("Layer %s already exists, skipping.", layer); | |
666 | ||
ff2670ad | 667 | i->current_ancestry++; |
72648326 | 668 | |
97b11eed | 669 | path = mfree(path); |
72648326 LP |
670 | } |
671 | ||
ff2670ad | 672 | log_info("Pulling layer %s...", layer); |
72648326 | 673 | |
ff2670ad LP |
674 | i->final_path = path; |
675 | path = NULL; | |
72648326 | 676 | |
63c372cb | 677 | url = strjoina(PROTOCOL_PREFIX, i->response_registries[0], "/v1/images/", layer, "/layer"); |
dc2c282b | 678 | r = pull_job_new(&i->layer_job, url, i->glue, i); |
ff2670ad LP |
679 | if (r < 0) |
680 | return log_error_errno(r, "Failed to allocate layer job: %m"); | |
72648326 | 681 | |
dc2c282b | 682 | r = dkr_pull_add_token(i, i->layer_job); |
72648326 LP |
683 | if (r < 0) |
684 | return log_oom(); | |
685 | ||
dc2c282b LP |
686 | i->layer_job->on_finished = dkr_pull_job_on_finished; |
687 | i->layer_job->on_open_disk = dkr_pull_job_on_open_disk; | |
688 | i->layer_job->on_progress = dkr_pull_job_on_progress; | |
26166c88 | 689 | i->layer_job->grow_machine_directory = i->grow_machine_directory; |
72648326 | 690 | |
dc2c282b | 691 | r = pull_job_begin(i->layer_job); |
72648326 | 692 | if (r < 0) |
ff2670ad | 693 | return log_error_errno(r, "Failed to start layer job: %m"); |
72648326 LP |
694 | |
695 | return 0; | |
696 | } | |
697 | ||
2c4fb0ea PO |
698 | static int dkr_pull_job_on_header(PullJob *j, const char *header, size_t sz) { |
699 | _cleanup_free_ char *registry = NULL; | |
700 | char *token, *digest; | |
701 | DkrPull *i; | |
702 | int r; | |
703 | ||
704 | assert(j); | |
705 | assert(j->userdata); | |
706 | ||
707 | i = j->userdata; | |
708 | r = curl_header_strdup(header, sz, HEADER_TOKEN, &token); | |
709 | if (r < 0) | |
710 | return log_oom(); | |
711 | if (r > 0) { | |
712 | free(i->response_token); | |
713 | i->response_token = token; | |
714 | return 0; | |
715 | } | |
716 | ||
717 | r = curl_header_strdup(header, sz, HEADER_DIGEST, &digest); | |
718 | if (r < 0) | |
719 | return log_oom(); | |
720 | if (r > 0) { | |
721 | free(i->response_digest); | |
722 | i->response_digest = digest; | |
723 | return 0; | |
724 | } | |
725 | ||
726 | r = curl_header_strdup(header, sz, HEADER_REGISTRY, ®istry); | |
727 | if (r < 0) | |
728 | return log_oom(); | |
729 | if (r > 0) { | |
730 | char **l, **k; | |
731 | ||
732 | l = strv_split(registry, ","); | |
733 | if (!l) | |
734 | return log_oom(); | |
735 | ||
736 | STRV_FOREACH(k, l) { | |
8fb49443 | 737 | if (!hostname_is_valid(*k, false)) { |
2c4fb0ea PO |
738 | log_error("Registry hostname is not valid."); |
739 | strv_free(l); | |
740 | return -EBADMSG; | |
741 | } | |
742 | } | |
743 | ||
744 | strv_free(i->response_registries); | |
745 | i->response_registries = l; | |
746 | } | |
747 | ||
748 | return 0; | |
749 | } | |
750 | ||
751 | static void dkr_pull_job_on_finished_v2(PullJob *j) { | |
752 | DkrPull *i; | |
753 | int r; | |
754 | ||
755 | assert(j); | |
756 | assert(j->userdata); | |
757 | ||
758 | i = j->userdata; | |
759 | if (j->error != 0) { | |
760 | if (j == i->images_job) | |
761 | log_error_errno(j->error, "Failed to retrieve images list. (Wrong index URL?)"); | |
762 | else if (j == i->ancestry_job) | |
763 | log_error_errno(j->error, "Failed to retrieve manifest."); | |
764 | else if (j == i->json_job) | |
765 | log_error_errno(j->error, "Failed to retrieve json data."); | |
766 | else | |
767 | log_error_errno(j->error, "Failed to retrieve layer data."); | |
768 | ||
769 | r = j->error; | |
770 | goto finish; | |
771 | } | |
772 | ||
773 | if (i->images_job == j) { | |
774 | const char *url; | |
775 | ||
776 | assert(!i->tags_job); | |
777 | assert(!i->ancestry_job); | |
778 | assert(!i->json_job); | |
779 | assert(!i->layer_job); | |
780 | ||
781 | if (strv_isempty(i->response_registries)) { | |
782 | r = -EBADMSG; | |
783 | log_error("Didn't get registry information."); | |
784 | goto finish; | |
785 | } | |
786 | ||
787 | log_info("Index lookup succeeded, directed to registry %s.", i->response_registries[0]); | |
788 | dkr_pull_report_progress(i, DKR_RESOLVING); | |
789 | ||
790 | url = strjoina(i->index_protocol, "auth.", i->index_address, "/v2/token/?scope=repository:", | |
791 | i->name, ":pull&service=registry.", i->index_address); | |
792 | r = pull_job_new(&i->tags_job, url, i->glue, i); | |
793 | if (r < 0) { | |
794 | log_error_errno(r, "Failed to allocate tags job: %m"); | |
795 | goto finish; | |
796 | } | |
797 | ||
798 | i->tags_job->on_finished = dkr_pull_job_on_finished_v2; | |
799 | i->tags_job->on_progress = dkr_pull_job_on_progress; | |
800 | ||
801 | r = pull_job_begin(i->tags_job); | |
802 | if (r < 0) { | |
803 | log_error_errno(r, "Failed to start tags job: %m"); | |
804 | goto finish; | |
805 | } | |
806 | ||
807 | } else if (i->tags_job == j) { | |
808 | const char *url; | |
45d9a304 | 809 | _cleanup_free_ char *buf; |
dde8bb32 | 810 | _cleanup_json_variant_unref_ JsonVariant *doc = NULL; |
2c4fb0ea PO |
811 | JsonVariant *e = NULL; |
812 | ||
813 | assert(!i->ancestry_job); | |
814 | assert(!i->json_job); | |
815 | assert(!i->layer_job); | |
816 | ||
817 | buf = strndup((const char *)j->payload, j->payload_size); | |
818 | if (!buf) { | |
819 | r = -ENOMEM; | |
820 | log_oom(); | |
821 | goto finish; | |
822 | } | |
823 | ||
824 | r = json_parse(buf, &doc); | |
825 | if (r < 0) { | |
826 | log_error("Unable to parse bearer token\n%s", j->payload); | |
827 | goto finish; | |
828 | } | |
829 | ||
830 | e = json_variant_value(doc, "token"); | |
831 | if (!e || e->type != JSON_VARIANT_STRING) { | |
832 | r = -EBADMSG; | |
833 | log_error("Invalid JSON format for Bearer token"); | |
834 | goto finish; | |
835 | } | |
836 | ||
837 | r = free_and_strdup(&i->response_token, json_variant_string(e)); | |
838 | if (r < 0) { | |
839 | log_oom(); | |
840 | goto finish; | |
841 | } | |
842 | ||
843 | url = strjoina(PROTOCOL_PREFIX, i->response_registries[0], "/v2/", i->name, "/manifests/", i->reference); | |
844 | r = pull_job_new(&i->ancestry_job, url, i->glue, i); | |
845 | if (r < 0) { | |
846 | log_error_errno(r, "Failed to allocate ancestry job: %m"); | |
847 | goto finish; | |
848 | } | |
849 | ||
850 | r = dkr_pull_add_bearer_token(i, i->ancestry_job); | |
851 | if (r < 0) | |
852 | goto finish; | |
853 | ||
854 | i->ancestry_job->on_finished = dkr_pull_job_on_finished_v2; | |
855 | i->ancestry_job->on_progress = dkr_pull_job_on_progress; | |
856 | i->ancestry_job->on_header = dkr_pull_job_on_header; | |
857 | ||
858 | ||
859 | r = pull_job_begin(i->ancestry_job); | |
860 | if (r < 0) { | |
861 | log_error_errno(r, "Failed to start ancestry job: %m"); | |
862 | goto finish; | |
863 | } | |
864 | ||
865 | } else if (i->ancestry_job == j) { | |
866 | ||
dde8bb32 | 867 | _cleanup_json_variant_unref_ JsonVariant *doc = NULL, *compat = NULL; |
2c4fb0ea PO |
868 | JsonVariant *e = NULL; |
869 | _cleanup_strv_free_ char **ancestry = NULL; | |
870 | size_t allocated = 0, size = 0; | |
871 | char *path = NULL, **k = NULL; | |
872 | ||
873 | r = json_parse((const char *)j->payload, &doc); | |
874 | if (r < 0) { | |
875 | log_error("Invalid JSON Manifest"); | |
876 | goto finish; | |
877 | } | |
878 | ||
879 | e = json_variant_value(doc, "fsLayers"); | |
37591152 | 880 | if (!e || e->type != JSON_VARIANT_ARRAY || e->size == 0) { |
2c4fb0ea PO |
881 | r = -EBADMSG; |
882 | goto finish; | |
883 | } | |
884 | ||
885 | log_info("JSON manifest with schema v%"PRIi64" for %s parsed!", | |
886 | json_variant_integer(json_variant_value(doc, "schemaVersion")), | |
887 | json_variant_string(json_variant_value(doc, "name"))); | |
888 | ||
889 | for (unsigned z = 0; z < e->size; z++) { | |
890 | JsonVariant *f = json_variant_element(e, z), *g = NULL; | |
891 | const char *layer; | |
892 | if (f->type != JSON_VARIANT_OBJECT) { | |
893 | r = -EBADMSG; | |
894 | goto finish; | |
895 | } | |
896 | ||
897 | g = json_variant_value(f, "blobSum"); | |
898 | ||
899 | layer = json_variant_string(g); | |
900 | if (!dkr_digest_is_valid(layer)) { | |
901 | r = -EBADMSG; | |
902 | goto finish; | |
903 | } | |
904 | ||
905 | if (!GREEDY_REALLOC(ancestry, allocated, size + 2)) { | |
906 | r = -ENOMEM; | |
907 | log_oom(); | |
908 | goto finish; | |
909 | } | |
910 | ||
911 | ancestry[size] = strdup(layer); | |
912 | if (!ancestry[size]) { | |
913 | r = -ENOMEM; | |
914 | log_oom(); | |
915 | goto finish; | |
916 | } | |
917 | ||
918 | ancestry[size+1] = NULL; | |
919 | size += 1; | |
920 | } | |
921 | ||
922 | e = json_variant_value(doc, "history"); | |
923 | if (!e || e->type != JSON_VARIANT_ARRAY) { | |
924 | r = -EBADMSG; | |
925 | goto finish; | |
926 | } | |
927 | ||
928 | e = json_variant_element(e, 0); | |
929 | e = json_variant_value(e, "v1Compatibility"); | |
930 | r = json_parse(json_variant_string(e), &compat); | |
931 | if (r < 0) { | |
932 | log_error("Invalid v1Compatibility JSON"); | |
933 | goto finish; | |
934 | } | |
935 | ||
936 | e = json_variant_value(compat, "id"); | |
937 | ||
938 | strv_free(i->ancestry); | |
939 | i->ancestry = strv_reverse(strv_uniq(ancestry)); | |
940 | i->n_ancestry = strv_length(i->ancestry); | |
941 | i->current_ancestry = 0; | |
942 | i->id = strdup(i->ancestry[i->n_ancestry - 1]); | |
943 | if (!i->id) { | |
944 | r = -ENOMEM; | |
945 | log_oom(); | |
946 | goto finish; | |
947 | } | |
948 | path = strjoin(i->image_root, "/.dkr-", json_variant_string(e), NULL); | |
949 | if (!path) { | |
950 | r = -ENOMEM; | |
951 | log_oom(); | |
952 | goto finish; | |
953 | } | |
954 | free(i->image_root); | |
955 | i->image_root = path; | |
956 | ancestry = NULL; | |
957 | ||
958 | log_info("Required layers:\n"); | |
959 | STRV_FOREACH(k, i->ancestry) | |
960 | log_info("\t%s", *k); | |
961 | log_info("\nProvenance:\n\tImageID: %s\n\tDigest: %s", json_variant_string(e), i->response_digest); | |
962 | ||
963 | dkr_pull_report_progress(i, DKR_DOWNLOADING); | |
964 | ||
965 | r = dkr_pull_pull_layer_v2(i); | |
966 | if (r < 0) | |
967 | goto finish; | |
968 | ||
969 | } else if (i->layer_job == j) { | |
970 | assert(i->temp_path); | |
971 | assert(i->final_path); | |
972 | ||
973 | j->disk_fd = safe_close(j->disk_fd); | |
974 | ||
975 | if (i->tar_pid > 0) { | |
976 | r = wait_for_terminate_and_warn("tar", i->tar_pid, true); | |
977 | i->tar_pid = 0; | |
978 | if (r < 0) | |
979 | goto finish; | |
980 | } | |
981 | ||
982 | r = aufs_resolve(i->temp_path); | |
983 | if (r < 0) { | |
984 | log_error_errno(r, "Failed to resolve aufs whiteouts: %m"); | |
985 | goto finish; | |
986 | } | |
987 | ||
988 | r = btrfs_subvol_set_read_only(i->temp_path, true); | |
989 | if (r < 0) { | |
990 | log_error_errno(r, "Failed to mark snapshot read-only: %m"); | |
991 | goto finish; | |
992 | } | |
993 | ||
994 | if (rename(i->temp_path, i->final_path) < 0) { | |
995 | log_error_errno(errno, "Failed to rename snaphsot: %m"); | |
996 | goto finish; | |
997 | } | |
998 | ||
999 | log_info("Completed writing to layer %s.", i->final_path); | |
1000 | ||
1001 | i->layer_job = pull_job_unref(i->layer_job); | |
1002 | free(i->temp_path); | |
1003 | i->temp_path = NULL; | |
1004 | free(i->final_path); | |
1005 | i->final_path = NULL; | |
1006 | ||
1007 | i->current_ancestry ++; | |
1008 | r = dkr_pull_pull_layer_v2(i); | |
1009 | if (r < 0) | |
1010 | goto finish; | |
1011 | ||
1012 | } else if (i->json_job != j) | |
1013 | assert_not_reached("Got finished event for unknown curl object"); | |
1014 | ||
1015 | if (!dkr_pull_is_done(i)) | |
1016 | return; | |
1017 | ||
1018 | dkr_pull_report_progress(i, DKR_COPYING); | |
1019 | ||
1020 | r = dkr_pull_make_local_copy(i, DKR_PULL_V2); | |
1021 | if (r < 0) | |
1022 | goto finish; | |
1023 | ||
1024 | r = 0; | |
1025 | ||
1026 | finish: | |
1027 | if (i->on_finished) | |
1028 | i->on_finished(i, r, i->userdata); | |
1029 | else | |
1030 | sd_event_exit(i->event, r); | |
1031 | ||
1032 | } | |
1033 | ||
dc2c282b LP |
1034 | static void dkr_pull_job_on_finished(PullJob *j) { |
1035 | DkrPull *i; | |
72648326 LP |
1036 | int r; |
1037 | ||
ff2670ad LP |
1038 | assert(j); |
1039 | assert(j->userdata); | |
1040 | ||
1041 | i = j->userdata; | |
1042 | if (j->error != 0) { | |
1043 | if (j == i->images_job) | |
1044 | log_error_errno(j->error, "Failed to retrieve images list. (Wrong index URL?)"); | |
1045 | else if (j == i->tags_job) | |
1046 | log_error_errno(j->error, "Failed to retrieve tags list."); | |
1047 | else if (j == i->ancestry_job) | |
1048 | log_error_errno(j->error, "Failed to retrieve ancestry list."); | |
1049 | else if (j == i->json_job) | |
1050 | log_error_errno(j->error, "Failed to retrieve json data."); | |
1051 | else | |
1052 | log_error_errno(j->error, "Failed to retrieve layer data."); | |
1053 | ||
1054 | r = j->error; | |
1055 | goto finish; | |
1056 | } | |
72648326 | 1057 | |
ff2670ad | 1058 | if (i->images_job == j) { |
72648326 | 1059 | const char *url; |
72648326 | 1060 | |
ff2670ad LP |
1061 | assert(!i->tags_job); |
1062 | assert(!i->ancestry_job); | |
1063 | assert(!i->json_job); | |
1064 | assert(!i->layer_job); | |
72648326 | 1065 | |
ff2670ad | 1066 | if (strv_isempty(i->response_registries)) { |
72648326 | 1067 | r = -EBADMSG; |
ff2670ad LP |
1068 | log_error("Didn't get registry information."); |
1069 | goto finish; | |
72648326 LP |
1070 | } |
1071 | ||
ff2670ad | 1072 | log_info("Index lookup succeeded, directed to registry %s.", i->response_registries[0]); |
dc2c282b | 1073 | dkr_pull_report_progress(i, DKR_RESOLVING); |
72648326 | 1074 | |
2c4fb0ea | 1075 | url = strjoina(PROTOCOL_PREFIX, i->response_registries[0], "/v1/repositories/", i->name, "/tags/", i->reference); |
dc2c282b | 1076 | r = pull_job_new(&i->tags_job, url, i->glue, i); |
ff2670ad LP |
1077 | if (r < 0) { |
1078 | log_error_errno(r, "Failed to allocate tags job: %m"); | |
1079 | goto finish; | |
1080 | } | |
1081 | ||
dc2c282b | 1082 | r = dkr_pull_add_token(i, i->tags_job); |
ff2670ad LP |
1083 | if (r < 0) { |
1084 | log_oom(); | |
1085 | goto finish; | |
1086 | } | |
1087 | ||
dc2c282b LP |
1088 | i->tags_job->on_finished = dkr_pull_job_on_finished; |
1089 | i->tags_job->on_progress = dkr_pull_job_on_progress; | |
72648326 | 1090 | |
dc2c282b | 1091 | r = pull_job_begin(i->tags_job); |
72648326 | 1092 | if (r < 0) { |
ff2670ad LP |
1093 | log_error_errno(r, "Failed to start tags job: %m"); |
1094 | goto finish; | |
72648326 LP |
1095 | } |
1096 | ||
ff2670ad | 1097 | } else if (i->tags_job == j) { |
72648326 | 1098 | const char *url; |
ff2670ad | 1099 | char *id = NULL; |
72648326 | 1100 | |
ff2670ad LP |
1101 | assert(!i->ancestry_job); |
1102 | assert(!i->json_job); | |
1103 | assert(!i->layer_job); | |
72648326 | 1104 | |
ff2670ad | 1105 | r = parse_id(j->payload, j->payload_size, &id); |
72648326 LP |
1106 | if (r < 0) { |
1107 | log_error_errno(r, "Failed to parse JSON id."); | |
ff2670ad | 1108 | goto finish; |
72648326 LP |
1109 | } |
1110 | ||
ff2670ad LP |
1111 | free(i->id); |
1112 | i->id = id; | |
72648326 | 1113 | |
ff2670ad | 1114 | log_info("Tag lookup succeeded, resolved to layer %s.", i->id); |
dc2c282b | 1115 | dkr_pull_report_progress(i, DKR_METADATA); |
ff2670ad | 1116 | |
63c372cb | 1117 | url = strjoina(PROTOCOL_PREFIX, i->response_registries[0], "/v1/images/", i->id, "/ancestry"); |
dc2c282b | 1118 | r = pull_job_new(&i->ancestry_job, url, i->glue, i); |
ff2670ad LP |
1119 | if (r < 0) { |
1120 | log_error_errno(r, "Failed to allocate ancestry job: %m"); | |
1121 | goto finish; | |
1122 | } | |
1123 | ||
dc2c282b | 1124 | r = dkr_pull_add_token(i, i->ancestry_job); |
ff2670ad LP |
1125 | if (r < 0) { |
1126 | log_oom(); | |
1127 | goto finish; | |
1128 | } | |
72648326 | 1129 | |
dc2c282b LP |
1130 | i->ancestry_job->on_finished = dkr_pull_job_on_finished; |
1131 | i->ancestry_job->on_progress = dkr_pull_job_on_progress; | |
72648326 | 1132 | |
63c372cb | 1133 | url = strjoina(PROTOCOL_PREFIX, i->response_registries[0], "/v1/images/", i->id, "/json"); |
dc2c282b | 1134 | r = pull_job_new(&i->json_job, url, i->glue, i); |
72648326 | 1135 | if (r < 0) { |
ff2670ad LP |
1136 | log_error_errno(r, "Failed to allocate json job: %m"); |
1137 | goto finish; | |
72648326 LP |
1138 | } |
1139 | ||
dc2c282b | 1140 | r = dkr_pull_add_token(i, i->json_job); |
72648326 | 1141 | if (r < 0) { |
ff2670ad LP |
1142 | log_oom(); |
1143 | goto finish; | |
72648326 LP |
1144 | } |
1145 | ||
dc2c282b LP |
1146 | i->json_job->on_finished = dkr_pull_job_on_finished; |
1147 | i->json_job->on_progress = dkr_pull_job_on_progress; | |
ff2670ad | 1148 | |
dc2c282b | 1149 | r = pull_job_begin(i->ancestry_job); |
ff2670ad LP |
1150 | if (r < 0) { |
1151 | log_error_errno(r, "Failed to start ancestry job: %m"); | |
1152 | goto finish; | |
1153 | } | |
1154 | ||
dc2c282b | 1155 | r = pull_job_begin(i->json_job); |
ff2670ad LP |
1156 | if (r < 0) { |
1157 | log_error_errno(r, "Failed to start json job: %m"); | |
1158 | goto finish; | |
1159 | } | |
1160 | ||
1161 | } else if (i->ancestry_job == j) { | |
1162 | char **ancestry = NULL, **k; | |
72648326 LP |
1163 | unsigned n; |
1164 | ||
ff2670ad LP |
1165 | assert(!i->layer_job); |
1166 | ||
1167 | r = parse_ancestry(j->payload, j->payload_size, &ancestry); | |
72648326 LP |
1168 | if (r < 0) { |
1169 | log_error_errno(r, "Failed to parse JSON id."); | |
ff2670ad | 1170 | goto finish; |
72648326 LP |
1171 | } |
1172 | ||
1173 | n = strv_length(ancestry); | |
ff2670ad | 1174 | if (n <= 0 || !streq(ancestry[n-1], i->id)) { |
72648326 | 1175 | log_error("Ancestry doesn't end in main layer."); |
ff2670ad | 1176 | strv_free(ancestry); |
72648326 | 1177 | r = -EBADMSG; |
ff2670ad | 1178 | goto finish; |
72648326 LP |
1179 | } |
1180 | ||
1181 | log_info("Ancestor lookup succeeded, requires layers:\n"); | |
ff2670ad LP |
1182 | STRV_FOREACH(k, ancestry) |
1183 | log_info("\t%s", *k); | |
72648326 | 1184 | |
ff2670ad LP |
1185 | strv_free(i->ancestry); |
1186 | i->ancestry = ancestry; | |
7079cfef | 1187 | i->n_ancestry = n; |
ff2670ad | 1188 | i->current_ancestry = 0; |
7079cfef | 1189 | |
dc2c282b | 1190 | dkr_pull_report_progress(i, DKR_DOWNLOADING); |
7079cfef | 1191 | |
dc2c282b | 1192 | r = dkr_pull_pull_layer(i); |
72648326 | 1193 | if (r < 0) |
ff2670ad | 1194 | goto finish; |
72648326 | 1195 | |
ff2670ad LP |
1196 | } else if (i->layer_job == j) { |
1197 | assert(i->temp_path); | |
1198 | assert(i->final_path); | |
72648326 | 1199 | |
ff2670ad | 1200 | j->disk_fd = safe_close(j->disk_fd); |
72648326 | 1201 | |
ff2670ad LP |
1202 | if (i->tar_pid > 0) { |
1203 | r = wait_for_terminate_and_warn("tar", i->tar_pid, true); | |
1204 | i->tar_pid = 0; | |
1205 | if (r < 0) | |
1206 | goto finish; | |
72648326 LP |
1207 | } |
1208 | ||
ff2670ad | 1209 | r = aufs_resolve(i->temp_path); |
72648326 | 1210 | if (r < 0) { |
ff2670ad LP |
1211 | log_error_errno(r, "Failed to resolve aufs whiteouts: %m"); |
1212 | goto finish; | |
72648326 LP |
1213 | } |
1214 | ||
ff2670ad | 1215 | r = btrfs_subvol_set_read_only(i->temp_path, true); |
72648326 | 1216 | if (r < 0) { |
cc98b302 | 1217 | log_error_errno(r, "Failed to mark snapshot read-only: %m"); |
ff2670ad | 1218 | goto finish; |
72648326 LP |
1219 | } |
1220 | ||
ff2670ad LP |
1221 | if (rename(i->temp_path, i->final_path) < 0) { |
1222 | log_error_errno(errno, "Failed to rename snaphsot: %m"); | |
1223 | goto finish; | |
72648326 LP |
1224 | } |
1225 | ||
ff2670ad | 1226 | log_info("Completed writing to layer %s.", i->final_path); |
72648326 | 1227 | |
dc2c282b | 1228 | i->layer_job = pull_job_unref(i->layer_job); |
a1e58e8e LP |
1229 | i->temp_path = mfree(i->temp_path); |
1230 | i->final_path = mfree(i->final_path); | |
72648326 | 1231 | |
ff2670ad | 1232 | i->current_ancestry ++; |
dc2c282b | 1233 | r = dkr_pull_pull_layer(i); |
ff2670ad LP |
1234 | if (r < 0) |
1235 | goto finish; | |
72648326 | 1236 | |
ff2670ad LP |
1237 | } else if (i->json_job != j) |
1238 | assert_not_reached("Got finished event for unknown curl object"); | |
72648326 | 1239 | |
dc2c282b | 1240 | if (!dkr_pull_is_done(i)) |
ff2670ad | 1241 | return; |
72648326 | 1242 | |
dc2c282b | 1243 | dkr_pull_report_progress(i, DKR_COPYING); |
7079cfef | 1244 | |
2c4fb0ea | 1245 | r = dkr_pull_make_local_copy(i, DKR_PULL_V1); |
72648326 | 1246 | if (r < 0) |
ff2670ad | 1247 | goto finish; |
72648326 | 1248 | |
ff2670ad | 1249 | r = 0; |
ff2670ad LP |
1250 | finish: |
1251 | if (i->on_finished) | |
1252 | i->on_finished(i, r, i->userdata); | |
1253 | else | |
1254 | sd_event_exit(i->event, r); | |
72648326 LP |
1255 | } |
1256 | ||
2c4fb0ea PO |
1257 | static int get_protocol_address(char **protocol, char **address, const char *url) { |
1258 | const char *sep, *dot; | |
6d9bad91 | 1259 | _cleanup_free_ char *a = NULL, *p = NULL; |
72648326 | 1260 | |
2c4fb0ea PO |
1261 | sep = strstr(url, "://"); |
1262 | if (!sep) | |
1263 | return -EINVAL; | |
e9d73334 | 1264 | |
2c4fb0ea PO |
1265 | dot = strrchr(url, '.'); |
1266 | if (!dot) | |
1267 | return -EINVAL; | |
1268 | dot--; | |
72648326 | 1269 | |
2c4fb0ea PO |
1270 | p = strndup(url, (sep - url) + 3); |
1271 | if (!p) | |
ff2670ad | 1272 | return log_oom(); |
72648326 | 1273 | |
2c4fb0ea PO |
1274 | while (dot > (sep + 3) && *dot != '.') |
1275 | dot--; | |
72648326 | 1276 | |
2c4fb0ea PO |
1277 | a = strdup(dot + 1); |
1278 | if (!a) | |
1279 | return log_oom(); | |
72648326 | 1280 | |
2c4fb0ea PO |
1281 | *address = a; |
1282 | *protocol = p; | |
6d9bad91 | 1283 | a = p = NULL; |
72648326 | 1284 | |
72648326 LP |
1285 | return 0; |
1286 | } | |
1287 | ||
2c4fb0ea | 1288 | int dkr_pull_start(DkrPull *i, const char *name, const char *reference, const char *local, bool force_local, DkrPullVersion version) { |
ff2670ad | 1289 | const char *url; |
72648326 LP |
1290 | int r; |
1291 | ||
ff2670ad | 1292 | assert(i); |
72648326 | 1293 | |
ff2670ad LP |
1294 | if (!dkr_name_is_valid(name)) |
1295 | return -EINVAL; | |
72648326 | 1296 | |
2c4fb0ea | 1297 | if (reference && !dkr_ref_is_valid(reference)) |
ff2670ad | 1298 | return -EINVAL; |
72648326 | 1299 | |
ff2670ad LP |
1300 | if (local && !machine_name_is_valid(local)) |
1301 | return -EINVAL; | |
72648326 | 1302 | |
ff2670ad LP |
1303 | if (i->images_job) |
1304 | return -EBUSY; | |
72648326 | 1305 | |
2c4fb0ea PO |
1306 | if (!reference) |
1307 | reference = "latest"; | |
1308 | ||
1309 | free(i->index_protocol); | |
1310 | free(i->index_address); | |
1311 | r = get_protocol_address(&i->index_protocol, &i->index_address, i->index_url); | |
1312 | if (r < 0) | |
1313 | return r; | |
72648326 | 1314 | |
ff2670ad | 1315 | r = free_and_strdup(&i->local, local); |
72648326 LP |
1316 | if (r < 0) |
1317 | return r; | |
ff2670ad | 1318 | i->force_local = force_local; |
72648326 | 1319 | |
ff2670ad | 1320 | r = free_and_strdup(&i->name, name); |
72648326 LP |
1321 | if (r < 0) |
1322 | return r; | |
2c4fb0ea | 1323 | r = free_and_strdup(&i->reference, reference); |
72648326 LP |
1324 | if (r < 0) |
1325 | return r; | |
1326 | ||
63c372cb | 1327 | url = strjoina(i->index_url, "/v1/repositories/", name, "/images"); |
72648326 | 1328 | |
dc2c282b | 1329 | r = pull_job_new(&i->images_job, url, i->glue, i); |
72648326 LP |
1330 | if (r < 0) |
1331 | return r; | |
1332 | ||
dc2c282b | 1333 | r = dkr_pull_add_token(i, i->images_job); |
72648326 LP |
1334 | if (r < 0) |
1335 | return r; | |
1336 | ||
2c4fb0ea PO |
1337 | if (version == DKR_PULL_V1) |
1338 | i->images_job->on_finished = dkr_pull_job_on_finished; | |
1339 | else | |
1340 | i->images_job->on_finished = dkr_pull_job_on_finished_v2; | |
1341 | ||
dc2c282b LP |
1342 | i->images_job->on_header = dkr_pull_job_on_header; |
1343 | i->images_job->on_progress = dkr_pull_job_on_progress; | |
72648326 | 1344 | |
dc2c282b | 1345 | return pull_job_begin(i->images_job); |
72648326 | 1346 | } |