libopkg/opkg.c

   1 /* opkg.c - the opkg  package management system
   2
   3    Thomas Wood <thomas@openedhand.com>
   4
   5    Copyright (C) 2008 OpenMoko Inc
   6
   7    This program is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU General Public License as
   9    published by the Free Software Foundation; either version 2, or (at
  10    your option) any later version.
  11
  12    This program 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    General Public License for more details.
  16  */
  17
  18 #include "config.h"
  19
  20 #include <stdio.h>
  21 #include <unistd.h>
  22 #include <fnmatch.h>
  23
  24 #include "opkg.h"
  25 #include "opkg_conf.h"
  26
  27 #include "opkg_install.h"
  28 #include "opkg_configure.h"
  29 #include "opkg_download.h"
  30 #include "opkg_remove.h"
  31 #include "opkg_upgrade.h"
  32
  33 #include "sprintf_alloc.h"
  34 #include "file_util.h"
  35
  36 #include <libbb/libbb.h>
  37
  38 #define opkg_assert(expr) if (!(expr)) { \
  39     printf ("opkg: file %s: line %d (%s): Assertation '%s' failed",\
  40             __FILE__, __LINE__, __PRETTY_FUNCTION__, # expr); abort (); }
  41
  42 #define progress(d, p) d.percentage = p; if (progress_callback) progress_callback (&d, user_data);
  43
  44 /** Private Functions ***/
  45
  46 static int
  47 opkg_configure_packages(char *pkg_name)
  48 {
  49         pkg_vec_t *all;
  50         int i;
  51         pkg_t *pkg;
  52         int r, err = 0;
  53
  54         all = pkg_vec_alloc();
  55         pkg_hash_fetch_available(all);
  56
  57         for (i = 0; i < all->len; i++) {
  58                 pkg = all->pkgs[i];
  59
  60                 if (pkg_name && fnmatch(pkg_name, pkg->name, 0))
  61                         continue;
  62
  63                 if (pkg->state_status == SS_UNPACKED) {
  64                         r = opkg_configure(pkg);
  65                         if (r == 0) {
  66                                 pkg->state_status = SS_INSTALLED;
  67                                 pkg->parent->state_status = SS_INSTALLED;
  68                                 pkg->state_flag &= ~SF_PREFER;
  69                         } else {
  70                                 if (!err)
  71                                         err = r;
  72                         }
  73                 }
  74         }
  75
  76         pkg_vec_free(all);
  77         return err;
  78 }
  79
  80 struct _curl_cb_data {
  81         opkg_progress_callback_t cb;
  82         opkg_progress_data_t *progress_data;
  83         void *user_data;
  84         int start_range;
  85         int finish_range;
  86 };
  87
  88 int
  89 curl_progress_cb(struct _curl_cb_data *cb_data, double t,       /* dltotal */
  90                 double d,       /* dlnow */
  91                 double ultotal, double ulnow)
  92 {
  93         int p = (t) ? d * 100 / t : 0;
  94         static int prev = -1;
  95         int progress = 0;
  96
  97         /* prevent the same value being sent twice (can occur due to rounding) */
  98         if (p == prev)
  99                 return 0;
 100         prev = p;
 101
 102         if (t < 1)
 103                 return 0;
 104
 105         progress = cb_data->start_range +
 106             (d / t * ((cb_data->finish_range - cb_data->start_range)));
 107         cb_data->progress_data->percentage = progress;
 108
 109         (cb_data->cb) (cb_data->progress_data, cb_data->user_data);
 110
 111         return 0;
 112 }
 113
 114
 115 /*** Public API ***/
 116
 117 int
 118 opkg_new()
 119 {
 120         if (opkg_conf_init())
 121                 goto err0;
 122
 123         if (pkg_hash_load_feeds())
 124                 goto err1;
 125
 126         if (pkg_hash_load_status_files())
 127                 goto err1;
 128
 129         return 0;
 130
 131 err1:
 132         pkg_hash_deinit();
 133 err0:
 134         opkg_conf_deinit();
 135         return -1;
 136 }
 137
 138 void
 139 opkg_free(void)
 140 {
 141 #ifdef HAVE_CURL
 142         opkg_curl_cleanup();
 143 #endif
 144         opkg_conf_deinit();
 145 }
 146
 147 int
 148 opkg_re_read_config_files(void)
 149 {
 150         pkg_hash_deinit();
 151         pkg_hash_init();
 152
 153         if (pkg_hash_load_feeds())
 154                 goto err;
 155
 156         if (pkg_hash_load_status_files())
 157                 goto err;
 158
 159         return 0;
 160
 161 err:
 162         pkg_hash_deinit();
 163         return -1;
 164 }
 165
 166 void
 167 opkg_get_option(char *option, void **value)
 168 {
 169         int i = 0;
 170         extern opkg_option_t options[];
 171
 172         /* look up the option
 173          * TODO: this would be much better as a hash table
 174          */
 175         while (options[i].name) {
 176                 if (strcmp(options[i].name, option) != 0) {
 177                         i++;
 178                         continue;
 179                 }
 180         }
 181
 182         /* get the option */
 183         switch (options[i].type) {
 184         case OPKG_OPT_TYPE_BOOL:
 185                 *((int *) value) = *((int *) options[i].value);
 186                 return;
 187
 188         case OPKG_OPT_TYPE_INT:
 189                 *((int *) value) = *((int *) options[i].value);
 190                 return;
 191
 192         case OPKG_OPT_TYPE_STRING:
 193                 *((char **) value) = xstrdup(options[i].value);
 194                 return;
 195         }
 196
 197 }
 198
 199 void
 200 opkg_set_option(char *option, void *value)
 201 {
 202         int i = 0, found = 0;
 203         extern opkg_option_t options[];
 204
 205         opkg_assert(option != NULL);
 206         opkg_assert(value != NULL);
 207
 208         /* look up the option
 209          * TODO: this would be much better as a hash table
 210          */
 211         while (options[i].name) {
 212                 if (strcmp(options[i].name, option) == 0) {
 213                         found = 1;
 214                         break;
 215                 }
 216                 i++;
 217         }
 218
 219         if (!found) {
 220                 opkg_msg(ERROR, "Invalid option: %s\n", option);
 221                 return;
 222         }
 223
 224         /* set the option */
 225         switch (options[i].type) {
 226         case OPKG_OPT_TYPE_BOOL:
 227                 if (*((int *) value) == 0)
 228                         *((int *) options[i].value) = 0;
 229                 else
 230                         *((int *) options[i].value) = 1;
 231                 return;
 232
 233         case OPKG_OPT_TYPE_INT:
 234                 *((int *) options[i].value) = *((int *) value);
 235                 return;
 236
 237         case OPKG_OPT_TYPE_STRING:
 238                 *((char **) options[i].value) = xstrdup(value);
 239                 return;
 240         }
 241
 242 }
 243
 244 /**
 245  * @brief libopkg API: Install package
 246  * @param package_name The name of package in which is going to install
 247  * @param progress_callback The callback function that report the status to caller.
 248  */
 249 int
 250 opkg_install_package(const char *package_name,
 251                 opkg_progress_callback_t progress_callback,
 252                 void *user_data)
 253 {
 254         int err;
 255         char *stripped_filename;
 256         opkg_progress_data_t pdata;
 257         pkg_t *old, *new;
 258         pkg_vec_t *deps, *all;
 259         int i, ndepends;
 260         char **unresolved = NULL;
 261
 262         opkg_assert(package_name != NULL);
 263
 264         /* ... */
 265         pkg_info_preinstall_check();
 266
 267
 268         /* check to ensure package is not already installed */
 269         old = pkg_hash_fetch_installed_by_name(package_name);
 270         if (old) {
 271                 opkg_msg(ERROR, "Package %s is already installed\n",
 272                                 package_name);
 273                 return -1;
 274         }
 275
 276         new = pkg_hash_fetch_best_installation_candidate_by_name(package_name);
 277         if (!new) {
 278                 opkg_msg(ERROR, "Couldn't find package %s\n", package_name);
 279                 return -1;
 280         }
 281
 282         new->state_flag |= SF_USER;
 283
 284         pdata.action = -1;
 285         pdata.pkg = new;
 286
 287         progress(pdata, 0);
 288
 289         /* find dependancies and download them */
 290         deps = pkg_vec_alloc();
 291         /* this function does not return the original package, so we insert it later */
 292         ndepends = pkg_hash_fetch_unsatisfied_dependencies(new, deps,
 293                         &unresolved);
 294         if (unresolved) {
 295                 char **tmp = unresolved;
 296                 opkg_msg(ERROR, "Couldn't satisfy the following dependencies"
 297                                " for %s:\n", package_name);
 298                 while (*tmp) {
 299                         opkg_msg(ERROR, "\t%s", *tmp);
 300                         free(*tmp);
 301                         tmp++;
 302                 }
 303                 free(unresolved);
 304                 pkg_vec_free(deps);
 305                 opkg_message(ERROR, "\n");
 306                 return -1;
 307         }
 308
 309         /* insert the package we are installing so that we download it */
 310         pkg_vec_insert(deps, new);
 311
 312         /* download package and dependencies */
 313         for (i = 0; i < deps->len; i++) {
 314                 pkg_t *pkg;
 315                 struct _curl_cb_data cb_data;
 316                 char *url;
 317
 318                 pkg = deps->pkgs[i];
 319                 if (pkg->local_filename)
 320                         continue;
 321
 322                 pdata.pkg = pkg;
 323                 pdata.action = OPKG_DOWNLOAD;
 324
 325                 if (pkg->src == NULL) {
 326                         opkg_msg(ERROR, "Package %s not available from any "
 327                                         "configured src\n", package_name);
 328                         return -1;
 329                 }
 330
 331                 sprintf_alloc(&url, "%s/%s", pkg->src->value, pkg->filename);
 332
 333                 /* Get the filename part, without any directory */
 334                 stripped_filename = strrchr(pkg->filename, '/');
 335                 if (!stripped_filename)
 336                         stripped_filename = pkg->filename;
 337
 338                 sprintf_alloc(&pkg->local_filename, "%s/%s", conf->tmp_dir,
 339                               stripped_filename);
 340
 341                 cb_data.cb = progress_callback;
 342                 cb_data.progress_data = &pdata;
 343                 cb_data.user_data = user_data;
 344                 /* 75% of "install" progress is for downloading */
 345                 cb_data.start_range = 75 * i / deps->len;
 346                 cb_data.finish_range = 75 * (i + 1) / deps->len;
 347
 348                 err = opkg_download(url, pkg->local_filename,
 349                                     (curl_progress_func) curl_progress_cb,
 350                                     &cb_data);
 351                 free(url);
 352
 353                 if (err) {
 354                         pkg_vec_free(deps);
 355                         return -1;
 356                 }
 357
 358         }
 359         pkg_vec_free(deps);
 360
 361         /* clear depenacy checked marks, left by pkg_hash_fetch_unsatisfied_dependencies */
 362         all = pkg_vec_alloc();
 363         pkg_hash_fetch_available(all);
 364         for (i = 0; i < all->len; i++) {
 365                 all->pkgs[i]->parent->dependencies_checked = 0;
 366         }
 367         pkg_vec_free(all);
 368
 369
 370         /* 75% of "install" progress is for downloading */
 371         pdata.pkg = new;
 372         pdata.action = OPKG_INSTALL;
 373         progress(pdata, 75);
 374
 375         /* unpack the package */
 376         err = opkg_install_pkg(new, 0);
 377
 378         if (err) {
 379                 return -1;
 380         }
 381
 382         progress(pdata, 75);
 383
 384         /* run configure scripts, etc. */
 385         err = opkg_configure_packages(NULL);
 386         if (err) {
 387                 return -1;
 388         }
 389
 390         /* write out status files and file lists */
 391         opkg_conf_write_status_files();
 392         pkg_write_changed_filelists();
 393
 394         progress(pdata, 100);
 395         return 0;
 396 }
 397
 398 int
 399 opkg_remove_package(const char *package_name,
 400                 opkg_progress_callback_t progress_callback, void *user_data)
 401 {
 402         int err;
 403         pkg_t *pkg = NULL;
 404         pkg_t *pkg_to_remove;
 405         opkg_progress_data_t pdata;
 406
 407         opkg_assert(package_name != NULL);
 408
 409         pkg_info_preinstall_check();
 410
 411         pkg = pkg_hash_fetch_installed_by_name(package_name);
 412
 413         if (pkg == NULL || pkg->state_status == SS_NOT_INSTALLED) {
 414                 opkg_msg(ERROR, "Package %s not installed\n", package_name);
 415                 return -1;
 416         }
 417
 418         pdata.action = OPKG_REMOVE;
 419         pdata.pkg = pkg;
 420         progress(pdata, 0);
 421
 422         if (conf->restrict_to_default_dest) {
 423                 pkg_to_remove = pkg_hash_fetch_installed_by_name_dest(pkg->name,
 424                                                       conf->default_dest);
 425         } else {
 426                 pkg_to_remove = pkg_hash_fetch_installed_by_name(pkg->name);
 427         }
 428
 429
 430         progress(pdata, 75);
 431
 432         err = opkg_remove_pkg(pkg_to_remove, 0);
 433
 434         /* write out status files and file lists */
 435         opkg_conf_write_status_files();
 436         pkg_write_changed_filelists();
 437
 438
 439         progress(pdata, 100);
 440         return (err) ? -1 : 0;
 441 }
 442
 443 int
 444 opkg_upgrade_package(const char *package_name,
 445                 opkg_progress_callback_t progress_callback,
 446                 void *user_data)
 447 {
 448         int err;
 449         pkg_t *pkg;
 450         opkg_progress_data_t pdata;
 451
 452         opkg_assert(package_name != NULL);
 453
 454         pkg_info_preinstall_check();
 455
 456         if (conf->restrict_to_default_dest) {
 457                 pkg = pkg_hash_fetch_installed_by_name_dest(package_name,
 458                                                             conf->default_dest);
 459         } else {
 460                 pkg = pkg_hash_fetch_installed_by_name(package_name);
 461         }
 462
 463         if (!pkg) {
 464                 opkg_msg(ERROR, "Package %s not installed\n", package_name);
 465                 return -1;
 466         }
 467
 468         pdata.action = OPKG_INSTALL;
 469         pdata.pkg = pkg;
 470         progress(pdata, 0);
 471
 472         err = opkg_upgrade_pkg(pkg);
 473         if (err) {
 474                 return -1;
 475         }
 476         progress(pdata, 75);
 477
 478         err = opkg_configure_packages(NULL);
 479         if (err) {
 480                 return -1;
 481         }
 482
 483         /* write out status files and file lists */
 484         opkg_conf_write_status_files();
 485         pkg_write_changed_filelists();
 486
 487         progress(pdata, 100);
 488         return 0;
 489 }
 490
 491 int
 492 opkg_upgrade_all(opkg_progress_callback_t progress_callback, void *user_data)
 493 {
 494         pkg_vec_t *installed;
 495         int err = 0;
 496         int i;
 497         pkg_t *pkg;
 498         opkg_progress_data_t pdata;
 499
 500         pdata.action = OPKG_INSTALL;
 501         pdata.pkg = NULL;
 502
 503         progress(pdata, 0);
 504
 505         installed = pkg_vec_alloc();
 506         pkg_info_preinstall_check();
 507
 508         pkg_hash_fetch_all_installed(installed);
 509         for (i = 0; i < installed->len; i++) {
 510                 pkg = installed->pkgs[i];
 511
 512                 pdata.pkg = pkg;
 513                 progress(pdata, 99 * i / installed->len);
 514
 515                 err += opkg_upgrade_pkg(pkg);
 516         }
 517         pkg_vec_free(installed);
 518
 519         if (err)
 520                 return 1;
 521
 522         err = opkg_configure_packages(NULL);
 523         if (err)
 524                 return 1;
 525
 526         /* write out status files and file lists */
 527         opkg_conf_write_status_files();
 528         pkg_write_changed_filelists();
 529
 530         pdata.pkg = NULL;
 531         progress(pdata, 100);
 532         return 0;
 533 }
 534
 535 int
 536 opkg_update_package_lists(opkg_progress_callback_t progress_callback,
 537                         void *user_data)
 538 {
 539         char *tmp;
 540         int err, result = 0;
 541         char *lists_dir;
 542         pkg_src_list_elt_t *iter;
 543         pkg_src_t *src;
 544         int sources_list_count, sources_done;
 545         opkg_progress_data_t pdata;
 546
 547         pdata.action = OPKG_DOWNLOAD;
 548         pdata.pkg = NULL;
 549         progress(pdata, 0);
 550
 551         sprintf_alloc(&lists_dir, "%s", (conf->restrict_to_default_dest)
 552                 ? conf->default_dest->lists_dir : conf->lists_dir);
 553
 554         if (!file_is_dir(lists_dir)) {
 555                 if (file_exists(lists_dir)) {
 556                         opkg_msg(ERROR, "%s is not a directory\n", lists_dir);
 557                         free(lists_dir);
 558                         return 1;
 559                 }
 560
 561                 err = file_mkdir_hier(lists_dir, 0755);
 562                 if (err) {
 563                         opkg_msg(ERROR, "Couldn't create lists_dir %s\n",
 564                                         lists_dir);
 565                         free(lists_dir);
 566                         return 1;
 567                 }
 568         }
 569
 570         sprintf_alloc(&tmp, "%s/update-XXXXXX", conf->tmp_dir);
 571         if (mkdtemp(tmp) == NULL) {
 572                 opkg_perror(ERROR, "Coundn't create temporary directory %s",
 573                                 tmp);
 574                 free(lists_dir);
 575                 free(tmp);
 576                 return 1;
 577         }
 578
 579         /* count the number of sources so we can give some progress updates */
 580         sources_list_count = 0;
 581         sources_done = 0;
 582         list_for_each_entry(iter, &conf->pkg_src_list.head, node) {
 583                 sources_list_count++;
 584         }
 585
 586         list_for_each_entry(iter, &conf->pkg_src_list.head, node) {
 587                 char *url, *list_file_name = NULL;
 588
 589                 src = (pkg_src_t *) iter->data;
 590
 591                 if (src->extra_data)    /* debian style? */
 592                         sprintf_alloc(&url, "%s/%s/%s", src->value,
 593                                       src->extra_data,
 594                                       src->gzip ? "Packages.gz" : "Packages");
 595                 else
 596                         sprintf_alloc(&url, "%s/%s", src->value,
 597                                       src->gzip ? "Packages.gz" : "Packages");
 598
 599                 sprintf_alloc(&list_file_name, "%s/%s", lists_dir, src->name);
 600                 if (src->gzip) {
 601                         FILE *in, *out;
 602                         struct _curl_cb_data cb_data;
 603                         char *tmp_file_name = NULL;
 604
 605                         sprintf_alloc(&tmp_file_name, "%s/%s.gz", tmp,
 606                                       src->name);
 607
 608                         opkg_msg(INFO, "Downloading %s to %s...\n", url,
 609                                         tmp_file_name);
 610
 611                         cb_data.cb = progress_callback;
 612                         cb_data.progress_data = &pdata;
 613                         cb_data.user_data = user_data;
 614                         cb_data.start_range =
 615                             100 * sources_done / sources_list_count;
 616                         cb_data.finish_range =
 617                             100 * (sources_done + 1) / sources_list_count;
 618
 619                         err = opkg_download(url, tmp_file_name,
 620                                           (curl_progress_func) curl_progress_cb,
 621                                           &cb_data);
 622
 623                         if (err == 0) {
 624                                 opkg_msg(INFO, "Inflating %s...\n",
 625                                                 tmp_file_name);
 626                                 in = fopen(tmp_file_name, "r");
 627                                 out = fopen(list_file_name, "w");
 628                                 if (in && out)
 629                                         unzip(in, out);
 630                                 else
 631                                         err = 1;
 632                                 if (in)
 633                                         fclose(in);
 634                                 if (out)
 635                                         fclose(out);
 636                                 unlink(tmp_file_name);
 637                         }
 638                         free(tmp_file_name);
 639                 } else
 640                         err = opkg_download(url, list_file_name, NULL, NULL);
 641
 642                 if (err) {
 643                         opkg_msg(ERROR, "Couldn't retrieve %s\n", url);
 644                         result = -1;
 645                 }
 646                 free(url);
 647
 648 #if defined(HAVE_GPGME) || defined(HAVE_OPENSSL)
 649                 if (conf->check_signature) {
 650                         char *sig_file_name;
 651                         /* download detached signitures to verify the package lists */
 652                         /* get the url for the sig file */
 653                         if (src->extra_data)    /* debian style? */
 654                                 sprintf_alloc(&url, "%s/%s/%s", src->value,
 655                                               src->extra_data, "Packages.sig");
 656                         else
 657                                 sprintf_alloc(&url, "%s/%s", src->value,
 658                                               "Packages.sig");
 659
 660                         /* create filename for signature */
 661                         sprintf_alloc(&sig_file_name, "%s/%s.sig", lists_dir,
 662                                       src->name);
 663
 664                         /* make sure there is no existing signature file */
 665                         unlink(sig_file_name);
 666
 667                         err = opkg_download(url, sig_file_name, NULL, NULL);
 668                         if (err) {
 669                                 opkg_msg(ERROR, "Couldn't retrieve %s\n", url);
 670                         } else {
 671                                 int err;
 672                                 err = opkg_verify_file(list_file_name,
 673                                                      sig_file_name);
 674                                 if (err == 0) {
 675                                         opkg_msg(INFO, "Signature check "
 676                                                         "passed for %s",
 677                                                         list_file_name);
 678                                 } else {
 679                                         opkg_msg(ERROR, "Signature check "
 680                                                         "failed for %s",
 681                                                         list_file_name);
 682                                 }
 683                         }
 684                         free(sig_file_name);
 685                         free(list_file_name);
 686                         free(url);
 687                 }
 688 #else
 689                 opkg_msg(INFO, "Signature check skipped for %s as GPG support"
 690                                 " has not been enabled in this build\n",
 691                                 list_file_name);
 692 #endif
 693
 694                 sources_done++;
 695                 progress(pdata, 100 * sources_done / sources_list_count);
 696         }
 697
 698         rmdir(tmp);
 699         free(tmp);
 700         free(lists_dir);
 701
 702         /* Now re-read the package lists to update package hash tables. */
 703         opkg_re_read_config_files();
 704
 705         return result;
 706 }
 707
 708 static int
 709 pkg_compare_names_and_version(const void *a0, const void *b0)
 710 {
 711         const pkg_t *a = *(const pkg_t **)a0;
 712         const pkg_t *b = *(const pkg_t **)b0;
 713         int ret;
 714
 715         ret = strcmp(a->name, b->name);
 716
 717         if (ret == 0)
 718                 ret = pkg_compare_versions(a, b);
 719
 720         return ret;
 721 }
 722
 723 int
 724 opkg_list_packages(opkg_package_callback_t callback, void *user_data)
 725 {
 726         pkg_vec_t *all;
 727         int i;
 728
 729         opkg_assert(callback);
 730
 731         all = pkg_vec_alloc();
 732         pkg_hash_fetch_available(all);
 733
 734         pkg_vec_sort(all, pkg_compare_names_and_version);
 735
 736         for (i = 0; i < all->len; i++) {
 737                 pkg_t *pkg;
 738
 739                 pkg = all->pkgs[i];
 740
 741                 callback(pkg, user_data);
 742         }
 743
 744         pkg_vec_free(all);
 745
 746         return 0;
 747 }
 748
 749 int
 750 opkg_list_upgradable_packages(opkg_package_callback_t callback, void *user_data)
 751 {
 752         struct active_list *head;
 753         struct active_list *node;
 754         pkg_t *old = NULL, *new = NULL;
 755
 756         opkg_assert(callback);
 757
 758         /* ensure all data is valid */
 759         pkg_info_preinstall_check();
 760
 761         head = prepare_upgrade_list();
 762         for (node = active_list_next(head, head); node;
 763              node = active_list_next(head, node)) {
 764                 old = list_entry(node, pkg_t, list);
 765                 new = pkg_hash_fetch_best_installation_candidate_by_name(old->name);
 766                 if (new == NULL)
 767                         continue;
 768                 callback(new, user_data);
 769         }
 770         active_list_head_delete(head);
 771         return 0;
 772 }
 773
 774 pkg_t *
 775 opkg_find_package(const char *name, const char *ver, const char *arch,
 776                 const char *repo)
 777 {
 778         pkg_t *pkg = NULL;
 779         pkg_vec_t *all;
 780         int i;
 781 #define sstrcmp(x,y) (x && y) ? strcmp (x, y) : 0
 782
 783         all = pkg_vec_alloc();
 784         pkg_hash_fetch_available(all);
 785         for (i = 0; i < all->len; i++) {
 786                 char *pkgv;
 787
 788                 pkg = all->pkgs[i];
 789
 790                 /* check name */
 791                 if (sstrcmp(pkg->name, name))
 792                         continue;
 793
 794                 /* check version */
 795                 pkgv = pkg_version_str_alloc(pkg);
 796                 if (sstrcmp(pkgv, ver)) {
 797                         free(pkgv);
 798                         continue;
 799                 }
 800                 free(pkgv);
 801
 802                 /* check architecture */
 803                 if (arch) {
 804                         if (sstrcmp(pkg->architecture, arch))
 805                                 continue;
 806                 }
 807
 808                 /* check repository */
 809                 if (repo) {
 810                         if (sstrcmp(pkg->src->name, repo))
 811                                 continue;
 812                 }
 813
 814                 /* match found */
 815                 break;
 816         }
 817
 818         pkg_vec_free(all);
 819
 820         return pkg;
 821 }
 822
 823 /**
 824  * @brief Check the accessibility of repositories.
 825  * @return return how many repositories cannot access. 0 means all okay.
 826  */
 827 int
 828 opkg_repository_accessibility_check(void)
 829 {
 830         pkg_src_list_elt_t *iter;
 831         str_list_elt_t *iter1;
 832         str_list_t *src;
 833         int repositories = 0;
 834         int ret = 0;
 835         char *repo_ptr;
 836         char *stmp;
 837         char *host, *end;
 838
 839         src = str_list_alloc();
 840
 841         list_for_each_entry(iter, &conf->pkg_src_list.head, node) {
 842                 host = strstr(((pkg_src_t *)iter->data)->value, "://") + 3;
 843                 end = index(host, '/');
 844                 if (strstr(((pkg_src_t *) iter->data)->value, "://") && end)
 845                         stmp = xstrndup(((pkg_src_t *) iter->data)->value,
 846                                      end - ((pkg_src_t *) iter->data)->value);
 847                 else
 848                         stmp = xstrdup(((pkg_src_t *) iter->data)->value);
 849
 850                 for (iter1 = str_list_first(src); iter1;
 851                      iter1 = str_list_next(src, iter1)) {
 852                         if (strstr(iter1->data, stmp))
 853                                 break;
 854                 }
 855                 if (iter1)
 856                         continue;
 857
 858                 sprintf_alloc(&repo_ptr, "%s/index.html", stmp);
 859                 free(stmp);
 860
 861                 str_list_append(src, repo_ptr);
 862                 free(repo_ptr);
 863                 repositories++;
 864         }
 865
 866         while (repositories > 0) {
 867                 iter1 = str_list_pop(src);
 868                 repositories--;
 869
 870                 if (opkg_download(iter1->data, "/dev/null", NULL, NULL))
 871                         ret++;
 872                 str_list_elt_deinit(iter1);
 873         }
 874
 875         free(src);
 876
 877         return ret;
 878 }