src/import/pull-job.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <fcntl.h>
   4 #include <sys/stat.h>
   5 #include <sys/xattr.h>
   6
   7 #include "alloc-util.h"
   8 #include "fd-util.h"
   9 #include "format-util.h"
  10 #include "fs-util.h"
  11 #include "gcrypt-util.h"
  12 #include "hexdecoct.h"
  13 #include "import-util.h"
  14 #include "io-util.h"
  15 #include "machine-pool.h"
  16 #include "parse-util.h"
  17 #include "pull-common.h"
  18 #include "pull-job.h"
  19 #include "string-util.h"
  20 #include "strv.h"
  21 #include "xattr-util.h"
  22
  23 void pull_job_close_disk_fd(PullJob *j) {
  24         if (!j)
  25                 return;
  26
  27         if (j->close_disk_fd)
  28                 safe_close(j->disk_fd);
  29
  30         j->disk_fd = -1;
  31 }
  32
  33 PullJob* pull_job_unref(PullJob *j) {
  34         if (!j)
  35                 return NULL;
  36
  37         pull_job_close_disk_fd(j);
  38
  39         curl_glue_remove_and_free(j->glue, j->curl);
  40         curl_slist_free_all(j->request_header);
  41
  42         import_compress_free(&j->compress);
  43
  44         if (j->checksum_context)
  45                 gcry_md_close(j->checksum_context);
  46
  47         free(j->url);
  48         free(j->etag);
  49         strv_free(j->old_etags);
  50         free(j->payload);
  51         free(j->checksum);
  52
  53         return mfree(j);
  54 }
  55
  56 static void pull_job_finish(PullJob *j, int ret) {
  57         assert(j);
  58
  59         if (IN_SET(j->state, PULL_JOB_DONE, PULL_JOB_FAILED))
  60                 return;
  61
  62         if (ret == 0) {
  63                 j->state = PULL_JOB_DONE;
  64                 j->progress_percent = 100;
  65                 log_info("Download of %s complete.", j->url);
  66         } else {
  67                 j->state = PULL_JOB_FAILED;
  68                 j->error = ret;
  69         }
  70
  71         if (j->on_finished)
  72                 j->on_finished(j);
  73 }
  74
  75 static int pull_job_restart(PullJob *j, const char *new_url) {
  76         int r;
  77
  78         assert(j);
  79         assert(new_url);
  80
  81         r = free_and_strdup(&j->url, new_url);
  82         if (r < 0)
  83                 return r;
  84
  85         j->state = PULL_JOB_INIT;
  86         j->error = 0;
  87         j->payload = mfree(j->payload);
  88         j->payload_size = 0;
  89         j->written_compressed = 0;
  90         j->written_uncompressed = 0;
  91         j->content_length = UINT64_MAX;
  92         j->etag = mfree(j->etag);
  93         j->etag_exists = false;
  94         j->mtime = 0;
  95         j->checksum = mfree(j->checksum);
  96
  97         curl_glue_remove_and_free(j->glue, j->curl);
  98         j->curl = NULL;
  99
 100         curl_slist_free_all(j->request_header);
 101         j->request_header = NULL;
 102
 103         import_compress_free(&j->compress);
 104
 105         if (j->checksum_context) {
 106                 gcry_md_close(j->checksum_context);
 107                 j->checksum_context = NULL;
 108         }
 109
 110         r = pull_job_begin(j);
 111         if (r < 0)
 112                 return r;
 113
 114         return 0;
 115 }
 116
 117 void pull_job_curl_on_finished(CurlGlue *g, CURL *curl, CURLcode result) {
 118         PullJob *j = NULL;
 119         CURLcode code;
 120         long status;
 121         int r;
 122
 123         if (curl_easy_getinfo(curl, CURLINFO_PRIVATE, (char **)&j) != CURLE_OK)
 124                 return;
 125
 126         if (!j || IN_SET(j->state, PULL_JOB_DONE, PULL_JOB_FAILED))
 127                 return;
 128
 129         if (result != CURLE_OK) {
 130                 r = log_error_errno(SYNTHETIC_ERRNO(EIO), "Transfer failed: %s", curl_easy_strerror(result));
 131                 goto finish;
 132         }
 133
 134         code = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &status);
 135         if (code != CURLE_OK) {
 136                 r = log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to retrieve response code: %s", curl_easy_strerror(code));
 137                 goto finish;
 138         } else if (status == 304) {
 139                 log_info("Image already downloaded. Skipping download.");
 140                 j->etag_exists = true;
 141                 r = 0;
 142                 goto finish;
 143         } else if (status >= 300) {
 144
 145                 if (status == 404 && j->on_not_found) {
 146                         _cleanup_free_ char *new_url = NULL;
 147
 148                         /* This resource wasn't found, but the implementor wants to maybe let us know a new URL, query for it. */
 149                         r = j->on_not_found(j, &new_url);
 150                         if (r < 0)
 151                                 goto finish;
 152
 153                         if (r > 0) { /* A new url to use */
 154                                 assert(new_url);
 155
 156                                 r = pull_job_restart(j, new_url);
 157                                 if (r < 0)
 158                                         goto finish;
 159
 160                                 code = curl_easy_getinfo(j->curl, CURLINFO_RESPONSE_CODE, &status);
 161                                 if (code != CURLE_OK) {
 162                                         r = log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to retrieve response code: %s", curl_easy_strerror(code));
 163                                         goto finish;
 164                                 }
 165
 166                                 if (status == 0)
 167                                         return;
 168                         }
 169                 }
 170
 171                 r = log_error_errno(
 172                                 status == 404 ? SYNTHETIC_ERRNO(ENOMEDIUM) : SYNTHETIC_ERRNO(EIO), /* Make the most common error recognizable */
 173                                 "HTTP request to %s failed with code %li.", j->url, status);
 174                 goto finish;
 175         } else if (status < 200) {
 176                 r = log_error_errno(SYNTHETIC_ERRNO(EIO), "HTTP request to %s finished with unexpected code %li.", j->url, status);
 177                 goto finish;
 178         }
 179
 180         if (j->state != PULL_JOB_RUNNING) {
 181                 r = log_error_errno(SYNTHETIC_ERRNO(EIO), "Premature connection termination.");
 182                 goto finish;
 183         }
 184
 185         if (j->content_length != UINT64_MAX &&
 186             j->content_length != j->written_compressed) {
 187                 r = log_error_errno(SYNTHETIC_ERRNO(EIO), "Download truncated.");
 188                 goto finish;
 189         }
 190
 191         if (j->checksum_context) {
 192                 uint8_t *k;
 193
 194                 k = gcry_md_read(j->checksum_context, GCRY_MD_SHA256);
 195                 if (!k) {
 196                         r = log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to get checksum.");
 197                         goto finish;
 198                 }
 199
 200                 j->checksum = hexmem(k, gcry_md_get_algo_dlen(GCRY_MD_SHA256));
 201                 if (!j->checksum) {
 202                         r = log_oom();
 203                         goto finish;
 204                 }
 205
 206                 log_debug("SHA256 of %s is %s.", j->url, j->checksum);
 207         }
 208
 209         /* Do a couple of finishing disk operations, but only if we are the sole owner of the file (i.e. no
 210          * offset is specified, which indicates we only own the file partially) */
 211
 212         if (j->disk_fd >= 0) {
 213
 214                 if (S_ISREG(j->disk_stat.st_mode)) {
 215
 216                         if (j->offset == UINT64_MAX) {
 217
 218                                 if (j->written_compressed > 0) {
 219                                         /* Make sure the file size is right, in case the file was sparse and we just seeked
 220                                          * for the last part */
 221                                         if (ftruncate(j->disk_fd, j->written_uncompressed) < 0) {
 222                                                 r = log_error_errno(errno, "Failed to truncate file: %m");
 223                                                 goto finish;
 224                                         }
 225                                 }
 226
 227                                 if (j->etag)
 228                                         (void) fsetxattr(j->disk_fd, "user.source_etag", j->etag, strlen(j->etag), 0);
 229                                 if (j->url)
 230                                         (void) fsetxattr(j->disk_fd, "user.source_url", j->url, strlen(j->url), 0);
 231
 232                                 if (j->mtime != 0) {
 233                                         struct timespec ut;
 234
 235                                         timespec_store(&ut, j->mtime);
 236
 237                                         if (futimens(j->disk_fd, (struct timespec[]) { ut, ut }) < 0)
 238                                                 log_debug_errno(errno, "Failed to adjust atime/mtime of created image, ignoring: %m");
 239
 240                                         r = fd_setcrtime(j->disk_fd, j->mtime);
 241                                         if (r < 0)
 242                                                 log_debug_errno(r, "Failed to adjust crtime of created image, ignoring: %m");
 243                                 }
 244                         }
 245
 246                         if (j->sync) {
 247                                 r = fsync_full(j->disk_fd);
 248                                 if (r < 0) {
 249                                         log_error_errno(r, "Failed to synchronize file to disk: %m");
 250                                         goto finish;
 251                                 }
 252                         }
 253
 254                 } else if (S_ISBLK(j->disk_stat.st_mode) && j->sync) {
 255
 256                         if (fsync(j->disk_fd) < 0) {
 257                                 r = log_error_errno(errno, "Failed to synchronize block device: %m");
 258                                 goto finish;
 259                         }
 260                 }
 261         }
 262
 263         r = 0;
 264
 265 finish:
 266         pull_job_finish(j, r);
 267 }
 268
 269 static int pull_job_write_uncompressed(const void *p, size_t sz, void *userdata) {
 270         PullJob *j = userdata;
 271         bool too_much = false;
 272         int r;
 273
 274         assert(j);
 275         assert(p);
 276         assert(sz > 0);
 277
 278         if (j->written_uncompressed > UINT64_MAX - sz)
 279                 return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "File too large, overflow");
 280
 281         if (j->written_uncompressed >= j->uncompressed_max) {
 282                 too_much = true;
 283                 goto finish;
 284         }
 285
 286         if (j->written_uncompressed + sz > j->uncompressed_max) {
 287                 too_much = true;
 288                 sz = j->uncompressed_max - j->written_uncompressed; /* since we have the data in memory
 289                                                                      * already, we might as well write it to
 290                                                                      * disk to the max */
 291         }
 292
 293         if (j->disk_fd >= 0) {
 294
 295                 if (S_ISREG(j->disk_stat.st_mode)) {
 296                         ssize_t n;
 297
 298                         n = sparse_write(j->disk_fd, p, sz, 64);
 299                         if (n < 0)
 300                                 return log_error_errno((int) n, "Failed to write file: %m");
 301                         if ((size_t) n < sz)
 302                                 return log_error_errno(SYNTHETIC_ERRNO(EIO), "Short write");
 303                 } else {
 304                         r = loop_write(j->disk_fd, p, sz, false);
 305                         if (r < 0)
 306                                 return log_error_errno(r, "Failed to write file: %m");
 307                 }
 308         }
 309
 310         if (j->disk_fd < 0 || j->force_memory) {
 311                 if (!GREEDY_REALLOC(j->payload, j->payload_size + sz))
 312                         return log_oom();
 313
 314                 memcpy(j->payload + j->payload_size, p, sz);
 315                 j->payload_size += sz;
 316         }
 317
 318         j->written_uncompressed += sz;
 319
 320 finish:
 321         if (too_much)
 322                 return log_error_errno(SYNTHETIC_ERRNO(EFBIG), "File overly large, refusing.");
 323
 324         return 0;
 325 }
 326
 327 static int pull_job_write_compressed(PullJob *j, void *p, size_t sz) {
 328         int r;
 329
 330         assert(j);
 331         assert(p);
 332
 333         if (sz <= 0)
 334                 return 0;
 335
 336         if (j->written_compressed + sz < j->written_compressed)
 337                 return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "File too large, overflow");
 338
 339         if (j->written_compressed + sz > j->compressed_max)
 340                 return log_error_errno(SYNTHETIC_ERRNO(EFBIG), "File overly large, refusing.");
 341
 342         if (j->content_length != UINT64_MAX &&
 343             j->written_compressed + sz > j->content_length)
 344                 return log_error_errno(SYNTHETIC_ERRNO(EFBIG),
 345                                        "Content length incorrect.");
 346
 347         if (j->checksum_context)
 348                 gcry_md_write(j->checksum_context, p, sz);
 349
 350         r = import_uncompress(&j->compress, p, sz, pull_job_write_uncompressed, j);
 351         if (r < 0)
 352                 return r;
 353
 354         j->written_compressed += sz;
 355
 356         return 0;
 357 }
 358
 359 static int pull_job_open_disk(PullJob *j) {
 360         int r;
 361
 362         assert(j);
 363
 364         if (j->on_open_disk) {
 365                 r = j->on_open_disk(j);
 366                 if (r < 0)
 367                         return r;
 368         }
 369
 370         if (j->disk_fd >= 0) {
 371                 if (fstat(j->disk_fd, &j->disk_stat) < 0)
 372                         return log_error_errno(errno, "Failed to stat disk file: %m");
 373
 374                 if (j->offset != UINT64_MAX) {
 375                         if (lseek(j->disk_fd, j->offset, SEEK_SET) == (off_t) -1)
 376                                 return log_error_errno(errno, "Failed to seek on file descriptor: %m");
 377                 }
 378         }
 379
 380         if (j->calc_checksum) {
 381                 initialize_libgcrypt(false);
 382
 383                 if (gcry_md_open(&j->checksum_context, GCRY_MD_SHA256, 0) != 0)
 384                         return log_error_errno(SYNTHETIC_ERRNO(EIO),
 385                                                "Failed to initialize hash context.");
 386         }
 387
 388         return 0;
 389 }
 390
 391 static int pull_job_detect_compression(PullJob *j) {
 392         _cleanup_free_ uint8_t *stub = NULL;
 393         size_t stub_size;
 394
 395         int r;
 396
 397         assert(j);
 398
 399         r = import_uncompress_detect(&j->compress, j->payload, j->payload_size);
 400         if (r < 0)
 401                 return log_error_errno(r, "Failed to initialize compressor: %m");
 402         if (r == 0)
 403                 return 0;
 404
 405         log_debug("Stream is compressed: %s", import_compress_type_to_string(j->compress.type));
 406
 407         r = pull_job_open_disk(j);
 408         if (r < 0)
 409                 return r;
 410
 411         /* Now, take the payload we read so far, and decompress it */
 412         stub = j->payload;
 413         stub_size = j->payload_size;
 414
 415         j->payload = NULL;
 416         j->payload_size = 0;
 417
 418         j->state = PULL_JOB_RUNNING;
 419
 420         r = pull_job_write_compressed(j, stub, stub_size);
 421         if (r < 0)
 422                 return r;
 423
 424         return 0;
 425 }
 426
 427 static size_t pull_job_write_callback(void *contents, size_t size, size_t nmemb, void *userdata) {
 428         PullJob *j = userdata;
 429         size_t sz = size * nmemb;
 430         int r;
 431
 432         assert(contents);
 433         assert(j);
 434
 435         switch (j->state) {
 436
 437         case PULL_JOB_ANALYZING:
 438                 /* Let's first check what it actually is */
 439
 440                 if (!GREEDY_REALLOC(j->payload, j->payload_size + sz)) {
 441                         r = log_oom();
 442                         goto fail;
 443                 }
 444
 445                 memcpy(j->payload + j->payload_size, contents, sz);
 446                 j->payload_size += sz;
 447
 448                 r = pull_job_detect_compression(j);
 449                 if (r < 0)
 450                         goto fail;
 451
 452                 break;
 453
 454         case PULL_JOB_RUNNING:
 455
 456                 r = pull_job_write_compressed(j, contents, sz);
 457                 if (r < 0)
 458                         goto fail;
 459
 460                 break;
 461
 462         case PULL_JOB_DONE:
 463         case PULL_JOB_FAILED:
 464                 r = -ESTALE;
 465                 goto fail;
 466
 467         default:
 468                 assert_not_reached();
 469         }
 470
 471         return sz;
 472
 473 fail:
 474         pull_job_finish(j, r);
 475         return 0;
 476 }
 477
 478 static int http_status_ok(CURLcode status) {
 479         /* Consider all HTTP status code in the 2xx range as OK */
 480         return status >= 200 && status <= 299;
 481 }
 482
 483 static int http_status_etag_exists(CURLcode status) {
 484         /* This one is special, it's triggered by our etag mgmt logic */
 485         return status == 304;
 486 }
 487
 488 static size_t pull_job_header_callback(void *contents, size_t size, size_t nmemb, void *userdata) {
 489         _cleanup_free_ char *length = NULL, *last_modified = NULL, *etag = NULL;
 490         size_t sz = size * nmemb;
 491         PullJob *j = userdata;
 492         CURLcode code;
 493         long status;
 494         int r;
 495
 496         assert(contents);
 497         assert(j);
 498
 499         if (IN_SET(j->state, PULL_JOB_DONE, PULL_JOB_FAILED)) {
 500                 r = -ESTALE;
 501                 goto fail;
 502         }
 503
 504         assert(j->state == PULL_JOB_ANALYZING);
 505
 506         code = curl_easy_getinfo(j->curl, CURLINFO_RESPONSE_CODE, &status);
 507         if (code != CURLE_OK) {
 508                 r = log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to retrieve response code: %s", curl_easy_strerror(code));
 509                 goto fail;
 510         }
 511
 512         if (http_status_ok(status) || http_status_etag_exists(status)) {
 513                 /* Check Etag on OK and etag exists responses. */
 514
 515                 r = curl_header_strdup(contents, sz, "ETag:", &etag);
 516                 if (r < 0) {
 517                         log_oom();
 518                         goto fail;
 519                 }
 520                 if (r > 0) {
 521                         free_and_replace(j->etag, etag);
 522
 523                         if (strv_contains(j->old_etags, j->etag)) {
 524                                 log_info("Image already downloaded. Skipping download. (%s)", j->etag);
 525                                 j->etag_exists = true;
 526                                 pull_job_finish(j, 0);
 527                                 return sz;
 528                         }
 529
 530                         return sz;
 531                 }
 532         }
 533
 534         if (!http_status_ok(status)) /* Let's ignore the rest here, these requests are probably redirects and
 535                                       * stuff where the headers aren't interesting to us */
 536                 return sz;
 537
 538         r = curl_header_strdup(contents, sz, "Content-Length:", &length);
 539         if (r < 0) {
 540                 log_oom();
 541                 goto fail;
 542         }
 543         if (r > 0) {
 544                 (void) safe_atou64(length, &j->content_length);
 545
 546                 if (j->content_length != UINT64_MAX) {
 547                         if (j->content_length > j->compressed_max) {
 548                                 r = log_error_errno(SYNTHETIC_ERRNO(EFBIG), "Content too large.");
 549                                 goto fail;
 550                         }
 551
 552                         log_info("Downloading %s for %s.", FORMAT_BYTES(j->content_length), j->url);
 553                 }
 554
 555                 return sz;
 556         }
 557
 558         r = curl_header_strdup(contents, sz, "Last-Modified:", &last_modified);
 559         if (r < 0) {
 560                 log_oom();
 561                 goto fail;
 562         }
 563         if (r > 0) {
 564                 (void) curl_parse_http_time(last_modified, &j->mtime);
 565                 return sz;
 566         }
 567
 568         if (j->on_header) {
 569                 r = j->on_header(j, contents, sz);
 570                 if (r < 0)
 571                         goto fail;
 572         }
 573
 574         return sz;
 575
 576 fail:
 577         pull_job_finish(j, r);
 578         return 0;
 579 }
 580
 581 static int pull_job_progress_callback(void *userdata, curl_off_t dltotal, curl_off_t dlnow, curl_off_t ultotal, curl_off_t ulnow) {
 582         PullJob *j = userdata;
 583         unsigned percent;
 584         usec_t n;
 585
 586         assert(j);
 587
 588         if (dltotal <= 0)
 589                 return 0;
 590
 591         percent = ((100 * dlnow) / dltotal);
 592         n = now(CLOCK_MONOTONIC);
 593
 594         if (n > j->last_status_usec + USEC_PER_SEC &&
 595             percent != j->progress_percent &&
 596             dlnow < dltotal) {
 597
 598                 if (n - j->start_usec > USEC_PER_SEC && dlnow > 0) {
 599                         usec_t left, done;
 600
 601                         done = n - j->start_usec;
 602                         left = (usec_t) (((double) done * (double) dltotal) / dlnow) - done;
 603
 604                         log_info("Got %u%% of %s. %s left at %s/s.",
 605                                  percent,
 606                                  j->url,
 607                                  FORMAT_TIMESPAN(left, USEC_PER_SEC),
 608                                  FORMAT_BYTES((uint64_t) ((double) dlnow / ((double) done / (double) USEC_PER_SEC))));
 609                 } else
 610                         log_info("Got %u%% of %s.", percent, j->url);
 611
 612                 j->progress_percent = percent;
 613                 j->last_status_usec = n;
 614
 615                 if (j->on_progress)
 616                         j->on_progress(j);
 617         }
 618
 619         return 0;
 620 }
 621
 622 int pull_job_new(
 623                 PullJob **ret,
 624                 const char *url,
 625                 CurlGlue *glue,
 626                 void *userdata) {
 627
 628         _cleanup_(pull_job_unrefp) PullJob *j = NULL;
 629         _cleanup_free_ char *u = NULL;
 630
 631         assert(url);
 632         assert(glue);
 633         assert(ret);
 634
 635         u = strdup(url);
 636         if (!u)
 637                 return -ENOMEM;
 638
 639         j = new(PullJob, 1);
 640         if (!j)
 641                 return -ENOMEM;
 642
 643         *j = (PullJob) {
 644                 .state = PULL_JOB_INIT,
 645                 .disk_fd = -1,
 646                 .close_disk_fd = true,
 647                 .userdata = userdata,
 648                 .glue = glue,
 649                 .content_length = UINT64_MAX,
 650                 .start_usec = now(CLOCK_MONOTONIC),
 651                 .compressed_max = 64LLU * 1024LLU * 1024LLU * 1024LLU, /* 64GB safety limit */
 652                 .uncompressed_max = 64LLU * 1024LLU * 1024LLU * 1024LLU, /* 64GB safety limit */
 653                 .url = TAKE_PTR(u),
 654                 .offset = UINT64_MAX,
 655                 .sync = true,
 656         };
 657
 658         *ret = TAKE_PTR(j);
 659
 660         return 0;
 661 }
 662
 663 int pull_job_begin(PullJob *j) {
 664         int r;
 665
 666         assert(j);
 667
 668         if (j->state != PULL_JOB_INIT)
 669                 return -EBUSY;
 670
 671         r = curl_glue_make(&j->curl, j->url, j);
 672         if (r < 0)
 673                 return r;
 674
 675         if (!strv_isempty(j->old_etags)) {
 676                 _cleanup_free_ char *cc = NULL, *hdr = NULL;
 677
 678                 cc = strv_join(j->old_etags, ", ");
 679                 if (!cc)
 680                         return -ENOMEM;
 681
 682                 hdr = strjoin("If-None-Match: ", cc);
 683                 if (!hdr)
 684                         return -ENOMEM;
 685
 686                 if (!j->request_header) {
 687                         j->request_header = curl_slist_new(hdr, NULL);
 688                         if (!j->request_header)
 689                                 return -ENOMEM;
 690                 } else {
 691                         struct curl_slist *l;
 692
 693                         l = curl_slist_append(j->request_header, hdr);
 694                         if (!l)
 695                                 return -ENOMEM;
 696
 697                         j->request_header = l;
 698                 }
 699         }
 700
 701         if (j->request_header) {
 702                 if (curl_easy_setopt(j->curl, CURLOPT_HTTPHEADER, j->request_header) != CURLE_OK)
 703                         return -EIO;
 704         }
 705
 706         if (curl_easy_setopt(j->curl, CURLOPT_WRITEFUNCTION, pull_job_write_callback) != CURLE_OK)
 707                 return -EIO;
 708
 709         if (curl_easy_setopt(j->curl, CURLOPT_WRITEDATA, j) != CURLE_OK)
 710                 return -EIO;
 711
 712         if (curl_easy_setopt(j->curl, CURLOPT_HEADERFUNCTION, pull_job_header_callback) != CURLE_OK)
 713                 return -EIO;
 714
 715         if (curl_easy_setopt(j->curl, CURLOPT_HEADERDATA, j) != CURLE_OK)
 716                 return -EIO;
 717
 718         if (curl_easy_setopt(j->curl, CURLOPT_XFERINFOFUNCTION, pull_job_progress_callback) != CURLE_OK)
 719                 return -EIO;
 720
 721         if (curl_easy_setopt(j->curl, CURLOPT_XFERINFODATA, j) != CURLE_OK)
 722                 return -EIO;
 723
 724         if (curl_easy_setopt(j->curl, CURLOPT_NOPROGRESS, 0) != CURLE_OK)
 725                 return -EIO;
 726
 727         r = curl_glue_add(j->glue, j->curl);
 728         if (r < 0)
 729                 return r;
 730
 731         j->state = PULL_JOB_ANALYZING;
 732
 733         return 0;
 734 }