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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
56ebfaf1 LP |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2015 Lennart Poettering | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU Lesser General Public License as published by | |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | Lesser General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public License | |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
19 | ***/ | |
20 | ||
21 | #include <sys/xattr.h> | |
22 | ||
b5efdb8a | 23 | #include "alloc-util.h" |
3ffd4af2 | 24 | #include "fd-util.h" |
89a5a90c | 25 | #include "hexdecoct.h" |
1f0f4f3b | 26 | #include "import-util.h" |
c004493c | 27 | #include "io-util.h" |
26166c88 | 28 | #include "machine-pool.h" |
6bedfcbb | 29 | #include "parse-util.h" |
1f0f4f3b | 30 | #include "pull-common.h" |
3ffd4af2 | 31 | #include "pull-job.h" |
07630cea LP |
32 | #include "string-util.h" |
33 | #include "strv.h" | |
89a5a90c | 34 | #include "xattr-util.h" |
56ebfaf1 | 35 | |
dc2c282b | 36 | PullJob* pull_job_unref(PullJob *j) { |
56ebfaf1 LP |
37 | if (!j) |
38 | return NULL; | |
39 | ||
40 | curl_glue_remove_and_free(j->glue, j->curl); | |
41 | curl_slist_free_all(j->request_header); | |
42 | ||
43 | safe_close(j->disk_fd); | |
44 | ||
3e2cda69 | 45 | import_compress_free(&j->compress); |
56ebfaf1 | 46 | |
98c38001 LP |
47 | if (j->checksum_context) |
48 | gcry_md_close(j->checksum_context); | |
85dbc41d | 49 | |
56ebfaf1 LP |
50 | free(j->url); |
51 | free(j->etag); | |
52 | strv_free(j->old_etags); | |
53 | free(j->payload); | |
98c38001 | 54 | free(j->checksum); |
56ebfaf1 | 55 | |
6b430fdb | 56 | return mfree(j); |
56ebfaf1 LP |
57 | } |
58 | ||
dc2c282b | 59 | static void pull_job_finish(PullJob *j, int ret) { |
56ebfaf1 LP |
60 | assert(j); |
61 | ||
3742095b | 62 | if (IN_SET(j->state, PULL_JOB_DONE, PULL_JOB_FAILED)) |
56ebfaf1 LP |
63 | return; |
64 | ||
68c913fd | 65 | if (ret == 0) { |
dc2c282b | 66 | j->state = PULL_JOB_DONE; |
7079cfef | 67 | j->progress_percent = 100; |
68c913fd LP |
68 | log_info("Download of %s complete.", j->url); |
69 | } else { | |
dc2c282b | 70 | j->state = PULL_JOB_FAILED; |
56ebfaf1 LP |
71 | j->error = ret; |
72 | } | |
73 | ||
74 | if (j->on_finished) | |
75 | j->on_finished(j); | |
76 | } | |
77 | ||
697be0be TB |
78 | static int pull_job_restart(PullJob *j) { |
79 | int r; | |
80 | char *chksum_url = NULL; | |
81 | ||
82 | r = import_url_change_last_component(j->url, "SHA256SUMS", &chksum_url); | |
83 | if (r < 0) | |
84 | return r; | |
85 | ||
86 | free(j->url); | |
697be0be TB |
87 | j->url = chksum_url; |
88 | j->state = PULL_JOB_INIT; | |
1f0f4f3b | 89 | j->payload = mfree(j->payload); |
697be0be TB |
90 | j->payload_size = 0; |
91 | j->payload_allocated = 0; | |
92 | j->written_compressed = 0; | |
93 | j->written_uncompressed = 0; | |
94 | j->written_since_last_grow = 0; | |
95 | ||
96 | r = pull_job_begin(j); | |
97 | if (r < 0) | |
98 | return r; | |
99 | ||
100 | return 0; | |
101 | } | |
102 | ||
dc2c282b LP |
103 | void pull_job_curl_on_finished(CurlGlue *g, CURL *curl, CURLcode result) { |
104 | PullJob *j = NULL; | |
56ebfaf1 LP |
105 | CURLcode code; |
106 | long status; | |
107 | int r; | |
108 | ||
a7f7d1bd | 109 | if (curl_easy_getinfo(curl, CURLINFO_PRIVATE, (char **)&j) != CURLE_OK) |
56ebfaf1 LP |
110 | return; |
111 | ||
4c701096 | 112 | if (!j || IN_SET(j->state, PULL_JOB_DONE, PULL_JOB_FAILED)) |
56ebfaf1 LP |
113 | return; |
114 | ||
115 | if (result != CURLE_OK) { | |
116 | log_error("Transfer failed: %s", curl_easy_strerror(result)); | |
117 | r = -EIO; | |
118 | goto finish; | |
119 | } | |
120 | ||
121 | code = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &status); | |
122 | if (code != CURLE_OK) { | |
123 | log_error("Failed to retrieve response code: %s", curl_easy_strerror(code)); | |
124 | r = -EIO; | |
125 | goto finish; | |
126 | } else if (status == 304) { | |
127 | log_info("Image already downloaded. Skipping download."); | |
85dbc41d | 128 | j->etag_exists = true; |
56ebfaf1 LP |
129 | r = 0; |
130 | goto finish; | |
131 | } else if (status >= 300) { | |
697be0be TB |
132 | if (status == 404 && j->style == VERIFICATION_PER_FILE) { |
133 | ||
134 | /* retry pull job with SHA256SUMS file */ | |
135 | r = pull_job_restart(j); | |
136 | if (r < 0) | |
137 | goto finish; | |
138 | ||
139 | code = curl_easy_getinfo(j->curl, CURLINFO_RESPONSE_CODE, &status); | |
140 | if (code != CURLE_OK) { | |
141 | log_error("Failed to retrieve response code: %s", curl_easy_strerror(code)); | |
142 | r = -EIO; | |
143 | goto finish; | |
144 | } | |
145 | ||
146 | if (status == 0) { | |
147 | j->style = VERIFICATION_PER_DIRECTORY; | |
148 | return; | |
149 | } | |
150 | } | |
151 | ||
56ebfaf1 LP |
152 | log_error("HTTP request to %s failed with code %li.", j->url, status); |
153 | r = -EIO; | |
154 | goto finish; | |
155 | } else if (status < 200) { | |
156 | log_error("HTTP request to %s finished with unexpected code %li.", j->url, status); | |
157 | r = -EIO; | |
158 | goto finish; | |
159 | } | |
160 | ||
dc2c282b | 161 | if (j->state != PULL_JOB_RUNNING) { |
56ebfaf1 LP |
162 | log_error("Premature connection termination."); |
163 | r = -EIO; | |
164 | goto finish; | |
165 | } | |
166 | ||
167 | if (j->content_length != (uint64_t) -1 && | |
168 | j->content_length != j->written_compressed) { | |
169 | log_error("Download truncated."); | |
170 | r = -EIO; | |
171 | goto finish; | |
172 | } | |
173 | ||
98c38001 | 174 | if (j->checksum_context) { |
85dbc41d LP |
175 | uint8_t *k; |
176 | ||
98c38001 | 177 | k = gcry_md_read(j->checksum_context, GCRY_MD_SHA256); |
85dbc41d LP |
178 | if (!k) { |
179 | log_error("Failed to get checksum."); | |
180 | r = -EIO; | |
181 | goto finish; | |
182 | } | |
183 | ||
98c38001 LP |
184 | j->checksum = hexmem(k, gcry_md_get_algo_dlen(GCRY_MD_SHA256)); |
185 | if (!j->checksum) { | |
85dbc41d LP |
186 | r = log_oom(); |
187 | goto finish; | |
188 | } | |
189 | ||
98c38001 | 190 | log_debug("SHA256 of %s is %s.", j->url, j->checksum); |
85dbc41d LP |
191 | } |
192 | ||
56ebfaf1 LP |
193 | if (j->disk_fd >= 0 && j->allow_sparse) { |
194 | /* Make sure the file size is right, in case the file was | |
195 | * sparse and we just seeked for the last part */ | |
196 | ||
197 | if (ftruncate(j->disk_fd, j->written_uncompressed) < 0) { | |
b6e676ce | 198 | r = log_error_errno(errno, "Failed to truncate file: %m"); |
56ebfaf1 LP |
199 | goto finish; |
200 | } | |
201 | ||
202 | if (j->etag) | |
203 | (void) fsetxattr(j->disk_fd, "user.source_etag", j->etag, strlen(j->etag), 0); | |
204 | if (j->url) | |
205 | (void) fsetxattr(j->disk_fd, "user.source_url", j->url, strlen(j->url), 0); | |
206 | ||
207 | if (j->mtime != 0) { | |
208 | struct timespec ut[2]; | |
209 | ||
210 | timespec_store(&ut[0], j->mtime); | |
211 | ut[1] = ut[0]; | |
212 | (void) futimens(j->disk_fd, ut); | |
213 | ||
214 | (void) fd_setcrtime(j->disk_fd, j->mtime); | |
215 | } | |
216 | } | |
217 | ||
218 | r = 0; | |
219 | ||
220 | finish: | |
dc2c282b | 221 | pull_job_finish(j, r); |
56ebfaf1 LP |
222 | } |
223 | ||
3e2cda69 LP |
224 | static int pull_job_write_uncompressed(const void *p, size_t sz, void *userdata) { |
225 | PullJob *j = userdata; | |
56ebfaf1 LP |
226 | ssize_t n; |
227 | ||
228 | assert(j); | |
229 | assert(p); | |
8af3cf74 LP |
230 | |
231 | if (sz <= 0) | |
232 | return 0; | |
56ebfaf1 LP |
233 | |
234 | if (j->written_uncompressed + sz < j->written_uncompressed) { | |
235 | log_error("File too large, overflow"); | |
236 | return -EOVERFLOW; | |
237 | } | |
238 | ||
239 | if (j->written_uncompressed + sz > j->uncompressed_max) { | |
240 | log_error("File overly large, refusing"); | |
241 | return -EFBIG; | |
242 | } | |
243 | ||
244 | if (j->disk_fd >= 0) { | |
245 | ||
b6e676ce | 246 | if (j->grow_machine_directory && j->written_since_last_grow >= GROW_INTERVAL_BYTES) { |
26166c88 LP |
247 | j->written_since_last_grow = 0; |
248 | grow_machine_directory(); | |
249 | } | |
250 | ||
56ebfaf1 LP |
251 | if (j->allow_sparse) |
252 | n = sparse_write(j->disk_fd, p, sz, 64); | |
253 | else | |
254 | n = write(j->disk_fd, p, sz); | |
b6e676ce LP |
255 | if (n < 0) |
256 | return log_error_errno(errno, "Failed to write file: %m"); | |
56ebfaf1 LP |
257 | if ((size_t) n < sz) { |
258 | log_error("Short write"); | |
259 | return -EIO; | |
260 | } | |
261 | } else { | |
262 | ||
263 | if (!GREEDY_REALLOC(j->payload, j->payload_allocated, j->payload_size + sz)) | |
264 | return log_oom(); | |
265 | ||
8af3cf74 | 266 | memcpy(j->payload + j->payload_size, p, sz); |
56ebfaf1 LP |
267 | j->payload_size += sz; |
268 | } | |
269 | ||
270 | j->written_uncompressed += sz; | |
26166c88 | 271 | j->written_since_last_grow += sz; |
56ebfaf1 LP |
272 | |
273 | return 0; | |
274 | } | |
275 | ||
dc2c282b | 276 | static int pull_job_write_compressed(PullJob *j, void *p, size_t sz) { |
56ebfaf1 LP |
277 | int r; |
278 | ||
279 | assert(j); | |
280 | assert(p); | |
8af3cf74 LP |
281 | |
282 | if (sz <= 0) | |
283 | return 0; | |
56ebfaf1 LP |
284 | |
285 | if (j->written_compressed + sz < j->written_compressed) { | |
286 | log_error("File too large, overflow"); | |
287 | return -EOVERFLOW; | |
288 | } | |
289 | ||
290 | if (j->written_compressed + sz > j->compressed_max) { | |
291 | log_error("File overly large, refusing."); | |
292 | return -EFBIG; | |
293 | } | |
294 | ||
295 | if (j->content_length != (uint64_t) -1 && | |
296 | j->written_compressed + sz > j->content_length) { | |
297 | log_error("Content length incorrect."); | |
298 | return -EFBIG; | |
299 | } | |
300 | ||
98c38001 LP |
301 | if (j->checksum_context) |
302 | gcry_md_write(j->checksum_context, p, sz); | |
85dbc41d | 303 | |
3e2cda69 LP |
304 | r = import_uncompress(&j->compress, p, sz, pull_job_write_uncompressed, j); |
305 | if (r < 0) | |
306 | return r; | |
56ebfaf1 LP |
307 | |
308 | j->written_compressed += sz; | |
309 | ||
310 | return 0; | |
311 | } | |
312 | ||
dc2c282b | 313 | static int pull_job_open_disk(PullJob *j) { |
56ebfaf1 LP |
314 | int r; |
315 | ||
316 | assert(j); | |
317 | ||
318 | if (j->on_open_disk) { | |
319 | r = j->on_open_disk(j); | |
320 | if (r < 0) | |
321 | return r; | |
322 | } | |
323 | ||
324 | if (j->disk_fd >= 0) { | |
325 | /* Check if we can do sparse files */ | |
326 | ||
327 | if (lseek(j->disk_fd, SEEK_SET, 0) == 0) | |
328 | j->allow_sparse = true; | |
329 | else { | |
330 | if (errno != ESPIPE) | |
331 | return log_error_errno(errno, "Failed to seek on file descriptor: %m"); | |
332 | ||
333 | j->allow_sparse = false; | |
334 | } | |
335 | } | |
336 | ||
98c38001 LP |
337 | if (j->calc_checksum) { |
338 | if (gcry_md_open(&j->checksum_context, GCRY_MD_SHA256, 0) != 0) { | |
85dbc41d LP |
339 | log_error("Failed to initialize hash context."); |
340 | return -EIO; | |
341 | } | |
342 | } | |
343 | ||
56ebfaf1 LP |
344 | return 0; |
345 | } | |
346 | ||
dc2c282b | 347 | static int pull_job_detect_compression(PullJob *j) { |
56ebfaf1 LP |
348 | _cleanup_free_ uint8_t *stub = NULL; |
349 | size_t stub_size; | |
350 | ||
351 | int r; | |
352 | ||
353 | assert(j); | |
354 | ||
3e2cda69 LP |
355 | r = import_uncompress_detect(&j->compress, j->payload, j->payload_size); |
356 | if (r < 0) | |
357 | return log_error_errno(r, "Failed to initialize compressor: %m"); | |
358 | if (r == 0) | |
56ebfaf1 LP |
359 | return 0; |
360 | ||
3e2cda69 | 361 | log_debug("Stream is compressed: %s", import_compress_type_to_string(j->compress.type)); |
56ebfaf1 | 362 | |
dc2c282b | 363 | r = pull_job_open_disk(j); |
56ebfaf1 LP |
364 | if (r < 0) |
365 | return r; | |
366 | ||
367 | /* Now, take the payload we read so far, and decompress it */ | |
368 | stub = j->payload; | |
369 | stub_size = j->payload_size; | |
370 | ||
371 | j->payload = NULL; | |
372 | j->payload_size = 0; | |
88a1aadc | 373 | j->payload_allocated = 0; |
56ebfaf1 | 374 | |
dc2c282b | 375 | j->state = PULL_JOB_RUNNING; |
56ebfaf1 | 376 | |
dc2c282b | 377 | r = pull_job_write_compressed(j, stub, stub_size); |
56ebfaf1 LP |
378 | if (r < 0) |
379 | return r; | |
380 | ||
381 | return 0; | |
382 | } | |
383 | ||
dc2c282b LP |
384 | static size_t pull_job_write_callback(void *contents, size_t size, size_t nmemb, void *userdata) { |
385 | PullJob *j = userdata; | |
56ebfaf1 LP |
386 | size_t sz = size * nmemb; |
387 | int r; | |
388 | ||
389 | assert(contents); | |
390 | assert(j); | |
391 | ||
392 | switch (j->state) { | |
393 | ||
dc2c282b | 394 | case PULL_JOB_ANALYZING: |
56ebfaf1 LP |
395 | /* Let's first check what it actually is */ |
396 | ||
397 | if (!GREEDY_REALLOC(j->payload, j->payload_allocated, j->payload_size + sz)) { | |
398 | r = log_oom(); | |
399 | goto fail; | |
400 | } | |
401 | ||
8af3cf74 | 402 | memcpy(j->payload + j->payload_size, contents, sz); |
56ebfaf1 LP |
403 | j->payload_size += sz; |
404 | ||
dc2c282b | 405 | r = pull_job_detect_compression(j); |
56ebfaf1 LP |
406 | if (r < 0) |
407 | goto fail; | |
408 | ||
409 | break; | |
410 | ||
dc2c282b | 411 | case PULL_JOB_RUNNING: |
56ebfaf1 | 412 | |
dc2c282b | 413 | r = pull_job_write_compressed(j, contents, sz); |
56ebfaf1 LP |
414 | if (r < 0) |
415 | goto fail; | |
416 | ||
417 | break; | |
418 | ||
dc2c282b LP |
419 | case PULL_JOB_DONE: |
420 | case PULL_JOB_FAILED: | |
56ebfaf1 LP |
421 | r = -ESTALE; |
422 | goto fail; | |
423 | ||
424 | default: | |
425 | assert_not_reached("Impossible state."); | |
426 | } | |
427 | ||
428 | return sz; | |
429 | ||
430 | fail: | |
dc2c282b | 431 | pull_job_finish(j, r); |
56ebfaf1 LP |
432 | return 0; |
433 | } | |
434 | ||
dc2c282b LP |
435 | static size_t pull_job_header_callback(void *contents, size_t size, size_t nmemb, void *userdata) { |
436 | PullJob *j = userdata; | |
56ebfaf1 LP |
437 | size_t sz = size * nmemb; |
438 | _cleanup_free_ char *length = NULL, *last_modified = NULL; | |
439 | char *etag; | |
440 | int r; | |
441 | ||
442 | assert(contents); | |
443 | assert(j); | |
444 | ||
3742095b | 445 | if (IN_SET(j->state, PULL_JOB_DONE, PULL_JOB_FAILED)) { |
56ebfaf1 LP |
446 | r = -ESTALE; |
447 | goto fail; | |
448 | } | |
449 | ||
dc2c282b | 450 | assert(j->state == PULL_JOB_ANALYZING); |
56ebfaf1 LP |
451 | |
452 | r = curl_header_strdup(contents, sz, "ETag:", &etag); | |
453 | if (r < 0) { | |
454 | log_oom(); | |
455 | goto fail; | |
456 | } | |
457 | if (r > 0) { | |
458 | free(j->etag); | |
459 | j->etag = etag; | |
460 | ||
461 | if (strv_contains(j->old_etags, j->etag)) { | |
462 | log_info("Image already downloaded. Skipping download."); | |
85dbc41d | 463 | j->etag_exists = true; |
dc2c282b | 464 | pull_job_finish(j, 0); |
56ebfaf1 LP |
465 | return sz; |
466 | } | |
467 | ||
468 | return sz; | |
469 | } | |
470 | ||
471 | r = curl_header_strdup(contents, sz, "Content-Length:", &length); | |
472 | if (r < 0) { | |
473 | log_oom(); | |
474 | goto fail; | |
475 | } | |
476 | if (r > 0) { | |
477 | (void) safe_atou64(length, &j->content_length); | |
478 | ||
479 | if (j->content_length != (uint64_t) -1) { | |
480 | char bytes[FORMAT_BYTES_MAX]; | |
481 | ||
482 | if (j->content_length > j->compressed_max) { | |
483 | log_error("Content too large."); | |
484 | r = -EFBIG; | |
485 | goto fail; | |
486 | } | |
487 | ||
68c913fd | 488 | log_info("Downloading %s for %s.", format_bytes(bytes, sizeof(bytes), j->content_length), j->url); |
56ebfaf1 LP |
489 | } |
490 | ||
491 | return sz; | |
492 | } | |
493 | ||
494 | r = curl_header_strdup(contents, sz, "Last-Modified:", &last_modified); | |
495 | if (r < 0) { | |
496 | log_oom(); | |
497 | goto fail; | |
498 | } | |
499 | if (r > 0) { | |
500 | (void) curl_parse_http_time(last_modified, &j->mtime); | |
501 | return sz; | |
502 | } | |
503 | ||
ff2670ad LP |
504 | if (j->on_header) { |
505 | r = j->on_header(j, contents, sz); | |
506 | if (r < 0) | |
507 | goto fail; | |
508 | } | |
509 | ||
56ebfaf1 LP |
510 | return sz; |
511 | ||
512 | fail: | |
dc2c282b | 513 | pull_job_finish(j, r); |
56ebfaf1 LP |
514 | return 0; |
515 | } | |
516 | ||
dc2c282b LP |
517 | static int pull_job_progress_callback(void *userdata, curl_off_t dltotal, curl_off_t dlnow, curl_off_t ultotal, curl_off_t ulnow) { |
518 | PullJob *j = userdata; | |
56ebfaf1 LP |
519 | unsigned percent; |
520 | usec_t n; | |
521 | ||
522 | assert(j); | |
523 | ||
524 | if (dltotal <= 0) | |
525 | return 0; | |
526 | ||
527 | percent = ((100 * dlnow) / dltotal); | |
528 | n = now(CLOCK_MONOTONIC); | |
529 | ||
530 | if (n > j->last_status_usec + USEC_PER_SEC && | |
68c913fd LP |
531 | percent != j->progress_percent && |
532 | dlnow < dltotal) { | |
56ebfaf1 LP |
533 | char buf[FORMAT_TIMESPAN_MAX]; |
534 | ||
535 | if (n - j->start_usec > USEC_PER_SEC && dlnow > 0) { | |
90bc083b | 536 | char y[FORMAT_BYTES_MAX]; |
56ebfaf1 LP |
537 | usec_t left, done; |
538 | ||
539 | done = n - j->start_usec; | |
540 | left = (usec_t) (((double) done * (double) dltotal) / dlnow) - done; | |
541 | ||
90bc083b LP |
542 | log_info("Got %u%% of %s. %s left at %s/s.", |
543 | percent, | |
544 | j->url, | |
545 | format_timespan(buf, sizeof(buf), left, USEC_PER_SEC), | |
546 | format_bytes(y, sizeof(y), (uint64_t) ((double) dlnow / ((double) done / (double) USEC_PER_SEC)))); | |
56ebfaf1 LP |
547 | } else |
548 | log_info("Got %u%% of %s.", percent, j->url); | |
549 | ||
550 | j->progress_percent = percent; | |
551 | j->last_status_usec = n; | |
7079cfef LP |
552 | |
553 | if (j->on_progress) | |
554 | j->on_progress(j); | |
56ebfaf1 LP |
555 | } |
556 | ||
557 | return 0; | |
558 | } | |
559 | ||
dc2c282b LP |
560 | int pull_job_new(PullJob **ret, const char *url, CurlGlue *glue, void *userdata) { |
561 | _cleanup_(pull_job_unrefp) PullJob *j = NULL; | |
56ebfaf1 LP |
562 | |
563 | assert(url); | |
564 | assert(glue); | |
565 | assert(ret); | |
566 | ||
dc2c282b | 567 | j = new0(PullJob, 1); |
56ebfaf1 LP |
568 | if (!j) |
569 | return -ENOMEM; | |
570 | ||
dc2c282b | 571 | j->state = PULL_JOB_INIT; |
56ebfaf1 LP |
572 | j->disk_fd = -1; |
573 | j->userdata = userdata; | |
574 | j->glue = glue; | |
575 | j->content_length = (uint64_t) -1; | |
576 | j->start_usec = now(CLOCK_MONOTONIC); | |
055c521a | 577 | j->compressed_max = j->uncompressed_max = 64LLU * 1024LLU * 1024LLU * 1024LLU; /* 64GB safety limit */ |
697be0be | 578 | j->style = VERIFICATION_STYLE_UNSET; |
56ebfaf1 LP |
579 | |
580 | j->url = strdup(url); | |
581 | if (!j->url) | |
582 | return -ENOMEM; | |
583 | ||
584 | *ret = j; | |
585 | j = NULL; | |
586 | ||
587 | return 0; | |
588 | } | |
589 | ||
dc2c282b | 590 | int pull_job_begin(PullJob *j) { |
56ebfaf1 LP |
591 | int r; |
592 | ||
593 | assert(j); | |
594 | ||
dc2c282b | 595 | if (j->state != PULL_JOB_INIT) |
56ebfaf1 LP |
596 | return -EBUSY; |
597 | ||
26166c88 LP |
598 | if (j->grow_machine_directory) |
599 | grow_machine_directory(); | |
600 | ||
56ebfaf1 LP |
601 | r = curl_glue_make(&j->curl, j->url, j); |
602 | if (r < 0) | |
603 | return r; | |
604 | ||
605 | if (!strv_isempty(j->old_etags)) { | |
606 | _cleanup_free_ char *cc = NULL, *hdr = NULL; | |
607 | ||
608 | cc = strv_join(j->old_etags, ", "); | |
609 | if (!cc) | |
610 | return -ENOMEM; | |
611 | ||
612 | hdr = strappend("If-None-Match: ", cc); | |
613 | if (!hdr) | |
614 | return -ENOMEM; | |
615 | ||
ff2670ad LP |
616 | if (!j->request_header) { |
617 | j->request_header = curl_slist_new(hdr, NULL); | |
618 | if (!j->request_header) | |
619 | return -ENOMEM; | |
620 | } else { | |
621 | struct curl_slist *l; | |
622 | ||
623 | l = curl_slist_append(j->request_header, hdr); | |
624 | if (!l) | |
625 | return -ENOMEM; | |
626 | ||
627 | j->request_header = l; | |
628 | } | |
629 | } | |
56ebfaf1 | 630 | |
ff2670ad | 631 | if (j->request_header) { |
56ebfaf1 LP |
632 | if (curl_easy_setopt(j->curl, CURLOPT_HTTPHEADER, j->request_header) != CURLE_OK) |
633 | return -EIO; | |
634 | } | |
635 | ||
dc2c282b | 636 | if (curl_easy_setopt(j->curl, CURLOPT_WRITEFUNCTION, pull_job_write_callback) != CURLE_OK) |
56ebfaf1 LP |
637 | return -EIO; |
638 | ||
639 | if (curl_easy_setopt(j->curl, CURLOPT_WRITEDATA, j) != CURLE_OK) | |
640 | return -EIO; | |
641 | ||
dc2c282b | 642 | if (curl_easy_setopt(j->curl, CURLOPT_HEADERFUNCTION, pull_job_header_callback) != CURLE_OK) |
56ebfaf1 LP |
643 | return -EIO; |
644 | ||
645 | if (curl_easy_setopt(j->curl, CURLOPT_HEADERDATA, j) != CURLE_OK) | |
646 | return -EIO; | |
647 | ||
dc2c282b | 648 | if (curl_easy_setopt(j->curl, CURLOPT_XFERINFOFUNCTION, pull_job_progress_callback) != CURLE_OK) |
56ebfaf1 LP |
649 | return -EIO; |
650 | ||
651 | if (curl_easy_setopt(j->curl, CURLOPT_XFERINFODATA, j) != CURLE_OK) | |
652 | return -EIO; | |
653 | ||
654 | if (curl_easy_setopt(j->curl, CURLOPT_NOPROGRESS, 0) != CURLE_OK) | |
655 | return -EIO; | |
656 | ||
657 | r = curl_glue_add(j->glue, j->curl); | |
658 | if (r < 0) | |
659 | return r; | |
660 | ||
dc2c282b | 661 | j->state = PULL_JOB_ANALYZING; |
56ebfaf1 LP |
662 | |
663 | return 0; | |
664 | } |