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