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 #include <fnmatch.h>
  20
  21 #include "opkg.h"
  22 #include "opkg_conf.h"
  23
  24 #include "opkg_install.h"
  25 #include "opkg_configure.h"
  26 #include "opkg_download.h"
  27 #include "opkg_remove.h"
  28 #include "opkg_upgrade.h"
  29
  30 #include "sprintf_alloc.h"
  31 #include "file_util.h"
  32
  33 #include <libbb/libbb.h>
  34
  35 #define opkg_assert(expr) if (!(expr)) { \
  36     printf ("opkg: file %s: line %d (%s): Assertation '%s' failed",\
  37             __FILE__, __LINE__, __PRETTY_FUNCTION__, # expr); abort (); }
  38
  39 #define progress(d, p) d.percentage = p; if (progress_callback) progress_callback (&d, user_data);
  40
  41 /** Private Functions ***/
  42
  43 static int
  44 opkg_configure_packages(char *pkg_name)
  45 {
  46         pkg_vec_t *all;
  47         int i;
  48         pkg_t *pkg;
  49         int r, err = 0;
  50
  51         all = pkg_vec_alloc();
  52         pkg_hash_fetch_available(all);
  53
  54         for (i = 0; i < all->len; i++) {
  55                 pkg = all->pkgs[i];
  56
  57                 if (pkg_name && fnmatch(pkg_name, pkg->name, 0))
  58                         continue;
  59
  60                 if (pkg->state_status == SS_UNPACKED) {
  61                         r = opkg_configure(pkg);
  62                         if (r == 0) {
  63                                 pkg->state_status = SS_INSTALLED;
  64                                 pkg->parent->state_status = SS_INSTALLED;
  65                                 pkg->state_flag &= ~SF_PREFER;
  66                         } else {
  67                                 if (!err)
  68                                         err = r;
  69                         }
  70                 }
  71         }
  72
  73         pkg_vec_free(all);
  74         return err;
  75 }
  76
  77 struct _curl_cb_data {
  78         opkg_progress_callback_t cb;
  79         opkg_progress_data_t *progress_data;
  80         void *user_data;
  81         int start_range;
  82         int finish_range;
  83 };
  84
  85 int
  86 curl_progress_cb(struct _curl_cb_data *cb_data, double t,       /* dltotal */
  87                 double d,       /* dlnow */
  88                 double ultotal, double ulnow)
  89 {
  90         int p = (t) ? d * 100 / t : 0;
  91         static int prev = -1;
  92         int progress = 0;
  93
  94         /* prevent the same value being sent twice (can occur due to rounding) */
  95         if (p == prev)
  96                 return 0;
  97         prev = p;
  98
  99         if (t < 1)
 100                 return 0;
 101
 102         progress = cb_data->start_range +
 103             (d / t * ((cb_data->finish_range - cb_data->start_range)));
 104         cb_data->progress_data->percentage = progress;
 105
 106         (cb_data->cb) (cb_data->progress_data, cb_data->user_data);
 107
 108         return 0;
 109 }
 110
 111
 112 /*** Public API ***/
 113
 114 int
 115 opkg_new()
 116 {
 117         if (opkg_conf_init())
 118                 goto err0;
 119
 120         if (pkg_hash_load_feeds())
 121                 goto err1;
 122
 123         if (pkg_hash_load_status_files())
 124                 goto err1;
 125
 126         return 0;
 127
 128 err1:
 129         pkg_hash_deinit();
 130 err0:
 131         opkg_conf_deinit();
 132         return -1;
 133 }
 134
 135 void
 136 opkg_free(void)
 137 {
 138 #ifdef HAVE_CURL
 139         opkg_curl_cleanup();
 140 #endif
 141         opkg_conf_deinit();
 142 }
 143
 144 int
 145 opkg_re_read_config_files(void)
 146 {
 147         pkg_hash_deinit();
 148         pkg_hash_init();
 149
 150         if (pkg_hash_load_feeds())
 151                 goto err;
 152
 153         if (pkg_hash_load_status_files())
 154                 goto err;
 155
 156         return 0;
 157
 158 err:
 159         pkg_hash_deinit();
 160         return -1;
 161 }
 162
 163 void
 164 opkg_get_option(char *option, void **value)
 165 {
 166         int i = 0;
 167         extern opkg_option_t options[];
 168
 169         /* look up the option
 170          * TODO: this would be much better as a hash table
 171          */
 172         while (options[i].name) {
 173                 if (strcmp(options[i].name, option) != 0) {
 174                         i++;
 175                         continue;
 176                 }
 177         }
 178
 179         /* get the option */
 180         switch (options[i].type) {
 181         case OPKG_OPT_TYPE_BOOL:
 182                 *((int *) value) = *((int *) options[i].value);
 183                 return;
 184
 185         case OPKG_OPT_TYPE_INT:
 186                 *((int *) value) = *((int *) options[i].value);
 187                 return;
 188
 189         case OPKG_OPT_TYPE_STRING:
 190                 *((char **) value) = xstrdup(options[i].value);
 191                 return;
 192         }
 193
 194 }
 195
 196 void
 197 opkg_set_option(char *option, void *value)
 198 {
 199         int i = 0, found = 0;
 200         extern opkg_option_t options[];
 201
 202         opkg_assert(option != NULL);
 203         opkg_assert(value != NULL);
 204
 205         /* look up the option
 206          * TODO: this would be much better as a hash table
 207          */
 208         while (options[i].name) {
 209                 if (strcmp(options[i].name, option) == 0) {
 210                         found = 1;
 211                         break;
 212                 }
 213                 i++;
 214         }
 215
 216         if (!found) {
 217                 opkg_msg(ERROR, "Invalid option: %s\n", option);
 218                 return;
 219         }
 220
 221         /* set the option */
 222         switch (options[i].type) {
 223         case OPKG_OPT_TYPE_BOOL:
 224                 if (*((int *) value) == 0)
 225                         *((int *) options[i].value) = 0;
 226                 else
 227                         *((int *) options[i].value) = 1;
 228                 return;
 229
 230         case OPKG_OPT_TYPE_INT:
 231                 *((int *) options[i].value) = *((int *) value);
 232                 return;
 233
 234         case OPKG_OPT_TYPE_STRING:
 235                 *((char **) options[i].value) = xstrdup(value);
 236                 return;
 237         }
 238
 239 }
 240
 241 /**
 242  * @brief libopkg API: Install package
 243  * @param package_name The name of package in which is going to install
 244  * @param progress_callback The callback function that report the status to caller.
 245  */
 246 int
 247 opkg_install_package(const char *package_name,
 248                 opkg_progress_callback_t progress_callback,
 249                 void *user_data)
 250 {
 251         int err;
 252         char *stripped_filename;
 253         opkg_progress_data_t pdata;
 254         pkg_t *old, *new;
 255         pkg_vec_t *deps, *all;
 256         int i, ndepends;
 257         char **unresolved = NULL;
 258
 259         opkg_assert(package_name != NULL);
 260
 261         /* ... */
 262         pkg_info_preinstall_check();
 263
 264
 265         /* check to ensure package is not already installed */
 266         old = pkg_hash_fetch_installed_by_name(package_name);
 267         if (old) {
 268                 opkg_msg(ERROR, "Package %s is already installed\n",
 269                                 package_name);
 270                 return -1;
 271         }
 272
 273         new = pkg_hash_fetch_best_installation_candidate_by_name(package_name);
 274         if (!new) {
 275                 opkg_msg(ERROR, "Couldn't find package %s\n", package_name);
 276                 return -1;
 277         }
 278
 279         new->state_flag |= SF_USER;
 280
 281         pdata.action = -1;
 282         pdata.pkg = new;
 283
 284         progress(pdata, 0);
 285
 286         /* find dependancies and download them */
 287         deps = pkg_vec_alloc();
 288         /* this function does not return the original package, so we insert it later */
 289         ndepends = pkg_hash_fetch_unsatisfied_dependencies(new, deps,
 290                         &unresolved);
 291         if (unresolved) {
 292                 char **tmp = unresolved;
 293                 opkg_msg(ERROR, "Couldn't satisfy the following dependencies"
 294                                " for %s:\n", package_name);
 295                 while (*tmp) {
 296                         opkg_msg(ERROR, "\t%s", *tmp);
 297                         free(*tmp);
 298                         tmp++;
 299                 }
 300                 free(unresolved);
 301                 pkg_vec_free(deps);
 302                 return -1;
 303         }
 304
 305         /* insert the package we are installing so that we download it */
 306         pkg_vec_insert(deps, new);
 307
 308         /* download package and dependencies */
 309         for (i = 0; i < deps->len; i++) {
 310                 pkg_t *pkg;
 311                 struct _curl_cb_data cb_data;
 312                 char *url;
 313
 314                 pkg = deps->pkgs[i];
 315                 if (pkg->local_filename)
 316                         continue;
 317
 318                 pdata.pkg = pkg;
 319                 pdata.action = OPKG_DOWNLOAD;
 320
 321                 if (pkg->src == NULL) {
 322                         opkg_msg(ERROR, "Package %s not available from any "
 323                                         "configured src\n", package_name);
 324                         return -1;
 325                 }
 326
 327                 sprintf_alloc(&url, "%s/%s", pkg->src->value, pkg->filename);
 328
 329                 /* Get the filename part, without any directory */
 330                 stripped_filename = strrchr(pkg->filename, '/');
 331                 if (!stripped_filename)
 332                         stripped_filename = pkg->filename;
 333
 334                 sprintf_alloc(&pkg->local_filename, "%s/%s", conf->tmp_dir,
 335                               stripped_filename);
 336
 337                 cb_data.cb = progress_callback;
 338                 cb_data.progress_data = &pdata;
 339                 cb_data.user_data = user_data;
 340                 /* 75% of "install" progress is for downloading */
 341                 cb_data.start_range = 75 * i / deps->len;
 342                 cb_data.finish_range = 75 * (i + 1) / deps->len;
 343
 344                 err = opkg_download(url, pkg->local_filename,
 345                                     (curl_progress_func) curl_progress_cb,
 346                                     &cb_data);
 347                 free(url);
 348
 349                 if (err) {
 350                         pkg_vec_free(deps);
 351                         return -1;
 352                 }
 353
 354         }
 355         pkg_vec_free(deps);
 356
 357         /* clear depenacy checked marks, left by pkg_hash_fetch_unsatisfied_dependencies */
 358         all = pkg_vec_alloc();
 359         pkg_hash_fetch_available(all);
 360         for (i = 0; i < all->len; i++) {
 361                 all->pkgs[i]->parent->dependencies_checked = 0;
 362         }
 363         pkg_vec_free(all);
 364
 365
 366         /* 75% of "install" progress is for downloading */
 367         pdata.pkg = new;
 368         pdata.action = OPKG_INSTALL;
 369         progress(pdata, 75);
 370
 371         /* unpack the package */
 372         err = opkg_install_pkg(new, 0);
 373
 374         if (err) {
 375                 return -1;
 376         }
 377
 378         progress(pdata, 75);
 379
 380         /* run configure scripts, etc. */
 381         err = opkg_configure_packages(NULL);
 382         if (err) {
 383                 return -1;
 384         }
 385
 386         /* write out status files and file lists */
 387         opkg_conf_write_status_files();
 388         pkg_write_changed_filelists();
 389
 390         progress(pdata, 100);
 391         return 0;
 392 }
 393
 394 int
 395 opkg_remove_package(const char *package_name,
 396                 opkg_progress_callback_t progress_callback, void *user_data)
 397 {
 398         int err;
 399         pkg_t *pkg = NULL;
 400         pkg_t *pkg_to_remove;
 401         opkg_progress_data_t pdata;
 402
 403         opkg_assert(package_name != NULL);
 404
 405         pkg_info_preinstall_check();
 406
 407         pkg = pkg_hash_fetch_installed_by_name(package_name);
 408
 409         if (pkg == NULL || pkg->state_status == SS_NOT_INSTALLED) {
 410                 opkg_msg(ERROR, "Package %s not installed\n", package_name);
 411                 return -1;
 412         }
 413
 414         pdata.action = OPKG_REMOVE;
 415         pdata.pkg = pkg;
 416         progress(pdata, 0);
 417
 418         if (conf->restrict_to_default_dest) {
 419                 pkg_to_remove = pkg_hash_fetch_installed_by_name_dest(pkg->name,
 420                                                       conf->default_dest);
 421         } else {
 422                 pkg_to_remove = pkg_hash_fetch_installed_by_name(pkg->name);
 423         }
 424
 425
 426         progress(pdata, 75);
 427
 428         err = opkg_remove_pkg(pkg_to_remove, 0);
 429
 430         /* write out status files and file lists */
 431         opkg_conf_write_status_files();
 432         pkg_write_changed_filelists();
 433
 434
 435         progress(pdata, 100);
 436         return (err) ? -1 : 0;
 437 }
 438
 439 int
 440 opkg_upgrade_package(const char *package_name,
 441                 opkg_progress_callback_t progress_callback,
 442                 void *user_data)
 443 {
 444         int err;
 445         pkg_t *pkg;
 446         opkg_progress_data_t pdata;
 447
 448         opkg_assert(package_name != NULL);
 449
 450         pkg_info_preinstall_check();
 451
 452         if (conf->restrict_to_default_dest) {
 453                 pkg = pkg_hash_fetch_installed_by_name_dest(package_name,
 454                                                             conf->default_dest);
 455         } else {
 456                 pkg = pkg_hash_fetch_installed_by_name(package_name);
 457         }
 458
 459         if (!pkg) {
 460                 opkg_msg(ERROR, "Package %s not installed\n", package_name);
 461                 return -1;
 462         }
 463
 464         pdata.action = OPKG_INSTALL;
 465         pdata.pkg = pkg;
 466         progress(pdata, 0);
 467
 468         err = opkg_upgrade_pkg(pkg);
 469         if (err) {
 470                 return -1;
 471         }
 472         progress(pdata, 75);
 473
 474         err = opkg_configure_packages(NULL);
 475         if (err) {
 476                 return -1;
 477         }
 478
 479         /* write out status files and file lists */
 480         opkg_conf_write_status_files();
 481         pkg_write_changed_filelists();
 482
 483         progress(pdata, 100);
 484         return 0;
 485 }
 486
 487 int
 488 opkg_upgrade_all(opkg_progress_callback_t progress_callback, void *user_data)
 489 {
 490         pkg_vec_t *installed;
 491         int err = 0;
 492         int i;
 493         pkg_t *pkg;
 494         opkg_progress_data_t pdata;
 495
 496         pdata.action = OPKG_INSTALL;
 497         pdata.pkg = NULL;
 498
 499         progress(pdata, 0);
 500
 501         installed = pkg_vec_alloc();
 502         pkg_info_preinstall_check();
 503
 504         pkg_hash_fetch_all_installed(installed);
 505         for (i = 0; i < installed->len; i++) {
 506                 pkg = installed->pkgs[i];
 507
 508                 pdata.pkg = pkg;
 509                 progress(pdata, 99 * i / installed->len);
 510
 511                 err += opkg_upgrade_pkg(pkg);
 512         }
 513         pkg_vec_free(installed);
 514
 515         if (err)
 516                 return 1;
 517
 518         err = opkg_configure_packages(NULL);
 519         if (err)
 520                 return 1;
 521
 522         pdata.pkg = NULL;
 523         progress(pdata, 100);
 524         return 0;
 525 }
 526
 527 int
 528 opkg_update_package_lists(opkg_progress_callback_t progress_callback,
 529                         void *user_data)
 530 {
 531         char *tmp;
 532         int err, result = 0;
 533         char *lists_dir;
 534         pkg_src_list_elt_t *iter;
 535         pkg_src_t *src;
 536         int sources_list_count, sources_done;
 537         opkg_progress_data_t pdata;
 538
 539         pdata.action = OPKG_DOWNLOAD;
 540         pdata.pkg = NULL;
 541         progress(pdata, 0);
 542
 543         sprintf_alloc(&lists_dir, "%s", (conf->restrict_to_default_dest)
 544                 ? conf->default_dest->lists_dir : conf->lists_dir);
 545
 546         if (!file_is_dir(lists_dir)) {
 547                 if (file_exists(lists_dir)) {
 548                         opkg_msg(ERROR, "%s is not a directory\n", lists_dir);
 549                         free(lists_dir);
 550                         return 1;
 551                 }
 552
 553                 err = file_mkdir_hier(lists_dir, 0755);
 554                 if (err) {
 555                         opkg_msg(ERROR, "Couldn't create lists_dir %s\n",
 556                                         lists_dir);
 557                         free(lists_dir);
 558                         return 1;
 559                 }
 560         }
 561
 562         sprintf_alloc(&tmp, "%s/update-XXXXXX", conf->tmp_dir);
 563         if (mkdtemp(tmp) == NULL) {
 564                 opkg_perror(ERROR, "Coundn't create temporary directory %s",
 565                                 tmp);
 566                 free(lists_dir);
 567                 free(tmp);
 568                 return 1;
 569         }
 570
 571         /* count the number of sources so we can give some progress updates */
 572         sources_list_count = 0;
 573         sources_done = 0;
 574         list_for_each_entry(iter, &conf->pkg_src_list.head, node) {
 575                 sources_list_count++;
 576         }
 577
 578         list_for_each_entry(iter, &conf->pkg_src_list.head, node) {
 579                 char *url, *list_file_name = NULL;
 580
 581                 src = (pkg_src_t *) iter->data;
 582
 583                 if (src->extra_data)    /* debian style? */
 584                         sprintf_alloc(&url, "%s/%s/%s", src->value,
 585                                       src->extra_data,
 586                                       src->gzip ? "Packages.gz" : "Packages");
 587                 else
 588                         sprintf_alloc(&url, "%s/%s", src->value,
 589                                       src->gzip ? "Packages.gz" : "Packages");
 590
 591                 sprintf_alloc(&list_file_name, "%s/%s", lists_dir, src->name);
 592                 if (src->gzip) {
 593                         FILE *in, *out;
 594                         struct _curl_cb_data cb_data;
 595                         char *tmp_file_name = NULL;
 596
 597                         sprintf_alloc(&tmp_file_name, "%s/%s.gz", tmp,
 598                                       src->name);
 599
 600                         opkg_msg(INFO, "Downloading %s to %s...\n", url,
 601                                         tmp_file_name);
 602
 603                         cb_data.cb = progress_callback;
 604                         cb_data.progress_data = &pdata;
 605                         cb_data.user_data = user_data;
 606                         cb_data.start_range =
 607                             100 * sources_done / sources_list_count;
 608                         cb_data.finish_range =
 609                             100 * (sources_done + 1) / sources_list_count;
 610
 611                         err = opkg_download(url, tmp_file_name,
 612                                           (curl_progress_func) curl_progress_cb,
 613                                           &cb_data);
 614
 615                         if (err == 0) {
 616                                 opkg_msg(INFO, "Inflating %s...\n",
 617                                                 tmp_file_name);
 618                                 in = fopen(tmp_file_name, "r");
 619                                 out = fopen(list_file_name, "w");
 620                                 if (in && out)
 621                                         unzip(in, out);
 622                                 else
 623                                         err = 1;
 624                                 if (in)
 625                                         fclose(in);
 626                                 if (out)
 627                                         fclose(out);
 628                                 unlink(tmp_file_name);
 629                         }
 630                         free(tmp_file_name);
 631                 } else
 632                         err = opkg_download(url, list_file_name, NULL, NULL);
 633
 634                 if (err) {
 635                         opkg_msg(ERROR, "Couldn't retrieve %s\n", url);
 636                         result = -1;
 637                 }
 638                 free(url);
 639
 640 #if defined(HAVE_GPGME) || defined(HAVE_OPENSSL)
 641                 if (conf->check_signature) {
 642                         char *sig_file_name;
 643                         /* download detached signitures to verify the package lists */
 644                         /* get the url for the sig file */
 645                         if (src->extra_data)    /* debian style? */
 646                                 sprintf_alloc(&url, "%s/%s/%s", src->value,
 647                                               src->extra_data, "Packages.sig");
 648                         else
 649                                 sprintf_alloc(&url, "%s/%s", src->value,
 650                                               "Packages.sig");
 651
 652                         /* create filename for signature */
 653                         sprintf_alloc(&sig_file_name, "%s/%s.sig", lists_dir,
 654                                       src->name);
 655
 656                         /* make sure there is no existing signature file */
 657                         unlink(sig_file_name);
 658
 659                         err = opkg_download(url, sig_file_name, NULL, NULL);
 660                         if (err) {
 661                                 opkg_msg(ERROR, "Couldn't retrieve %s\n", url);
 662                         } else {
 663                                 int err;
 664                                 err = opkg_verify_file(list_file_name,
 665                                                      sig_file_name);
 666                                 if (err == 0) {
 667                                         opkg_msg(INFO, "Signature check "
 668                                                         "passed for %s",
 669                                                         list_file_name);
 670                                 } else {
 671                                         opkg_msg(ERROR, "Signature check "
 672                                                         "failed for %s",
 673                                                         list_file_name);
 674                                 }
 675                         }
 676                         free(sig_file_name);
 677                         free(list_file_name);
 678                         free(url);
 679                 }
 680 #else
 681                 opkg_msg(INFO, "Signature check skipped for %s as GPG support"
 682                                 " has not been enabled in this build\n",
 683                                 list_file_name);
 684 #endif
 685
 686                 sources_done++;
 687                 progress(pdata, 100 * sources_done / sources_list_count);
 688         }
 689
 690         rmdir(tmp);
 691         free(tmp);
 692         free(lists_dir);
 693
 694         /* Now re-read the package lists to update package hash tables. */
 695         opkg_re_read_config_files();
 696
 697         return result;
 698 }
 699
 700 static int
 701 pkg_compare_names_and_version(const void *a0, const void *b0)
 702 {
 703         const pkg_t *a = *(const pkg_t **)a0;
 704         const pkg_t *b = *(const pkg_t **)b0;
 705         int ret;
 706
 707         ret = strcmp(a->name, b->name);
 708
 709         if (ret == 0)
 710                 ret = pkg_compare_versions(a, b);
 711
 712         return ret;
 713 }
 714
 715 int
 716 opkg_list_packages(opkg_package_callback_t callback, void *user_data)
 717 {
 718         pkg_vec_t *all;
 719         int i;
 720
 721         opkg_assert(callback);
 722
 723         all = pkg_vec_alloc();
 724         pkg_hash_fetch_available(all);
 725
 726         pkg_vec_sort(all, pkg_compare_names_and_version);
 727
 728         for (i = 0; i < all->len; i++) {
 729                 pkg_t *pkg;
 730
 731                 pkg = all->pkgs[i];
 732
 733                 callback(pkg, user_data);
 734         }
 735
 736         pkg_vec_free(all);
 737
 738         return 0;
 739 }
 740
 741 int
 742 opkg_list_upgradable_packages(opkg_package_callback_t callback, void *user_data)
 743 {
 744         struct active_list *head;
 745         struct active_list *node;
 746         pkg_t *old = NULL, *new = NULL;
 747
 748         opkg_assert(callback);
 749
 750         /* ensure all data is valid */
 751         pkg_info_preinstall_check();
 752
 753         head = prepare_upgrade_list();
 754         for (node = active_list_next(head, head); node;
 755              active_list_next(head, node)) {
 756                 old = list_entry(node, pkg_t, list);
 757                 new = pkg_hash_fetch_best_installation_candidate_by_name(old->name);
 758                 if (new == NULL)
 759                         continue;
 760                 callback(new, user_data);
 761         }
 762         active_list_head_delete(head);
 763         return 0;
 764 }
 765
 766 pkg_t *
 767 opkg_find_package(const char *name, const char *ver, const char *arch,
 768                 const char *repo)
 769 {
 770         pkg_t *pkg = NULL;
 771         pkg_vec_t *all;
 772         int i;
 773 #define sstrcmp(x,y) (x && y) ? strcmp (x, y) : 0
 774
 775         all = pkg_vec_alloc();
 776         pkg_hash_fetch_available(all);
 777         for (i = 0; i < all->len; i++) {
 778                 char *pkgv;
 779
 780                 pkg = all->pkgs[i];
 781
 782                 /* check name */
 783                 if (sstrcmp(pkg->name, name))
 784                         continue;
 785
 786                 /* check version */
 787                 pkgv = pkg_version_str_alloc(pkg);
 788                 if (sstrcmp(pkgv, ver)) {
 789                         free(pkgv);
 790                         continue;
 791                 }
 792                 free(pkgv);
 793
 794                 /* check architecture */
 795                 if (arch) {
 796                         if (sstrcmp(pkg->architecture, arch))
 797                                 continue;
 798                 }
 799
 800                 /* check repository */
 801                 if (repo) {
 802                         if (sstrcmp(pkg->src->name, repo))
 803                                 continue;
 804                 }
 805
 806                 /* match found */
 807                 break;
 808         }
 809
 810         pkg_vec_free(all);
 811
 812         return pkg;
 813 }
 814
 815 #ifdef HAVE_CURL
 816 #include <curl/curl.h>
 817 #endif
 818 /**
 819  * @brief Check the accessibility of repositories. It will try to access the repository to check if the respository is accessible throught current network status.
 820  * @return return how many repositories cannot access. 0 means all okay.
 821  */
 822 int
 823 opkg_repository_accessibility_check(void)
 824 {
 825         pkg_src_list_elt_t *iter;
 826         str_list_elt_t *iter1;
 827         str_list_t *src;
 828         int repositories = 0;
 829         int ret = 0;
 830         int err;
 831         char *repo_ptr;
 832         char *stmp;
 833         char *host, *end;
 834
 835         src = str_list_alloc();
 836
 837         list_for_each_entry(iter, &conf->pkg_src_list.head, node) {
 838                 host = strstr(((pkg_src_t *)iter->data)->value, "://") + 3;
 839                 end = index(host, '/');
 840                 if (strstr(((pkg_src_t *) iter->data)->value, "://") && end)
 841                         stmp = xstrndup(((pkg_src_t *) iter->data)->value,
 842                                      end - ((pkg_src_t *) iter->data)->value);
 843                 else
 844                         stmp = xstrdup(((pkg_src_t *) iter->data)->value);
 845
 846                 for (iter1 = str_list_first(src); iter1;
 847                      iter1 = str_list_next(src, iter1)) {
 848                         if (strstr(iter1->data, stmp))
 849                                 break;
 850                 }
 851                 if (iter1)
 852                         continue;
 853
 854                 sprintf_alloc(&repo_ptr, "%s/index.html", stmp);
 855                 free(stmp);
 856
 857                 str_list_append(src, repo_ptr);
 858                 free(repo_ptr);
 859                 repositories++;
 860         }
 861         while (repositories > 0) {
 862                 iter1 = str_list_pop(src);
 863                 repositories--;
 864
 865                 err = opkg_download(iter1->data, "/dev/null", NULL, NULL);
 866 #ifdef HAVE_CURL
 867                 if (!(err == CURLE_OK ||
 868                       err == CURLE_HTTP_RETURNED_ERROR ||
 869                       err == CURLE_FILE_COULDNT_READ_FILE ||
 870                       err == CURLE_REMOTE_FILE_NOT_FOUND ||
 871                       err == CURLE_TFTP_NOTFOUND)) {
 872 #else
 873                 if (!(err == 0)) {
 874 #endif
 875                         ret++;
 876                 }
 877                 str_list_elt_deinit(iter1);
 878         }
 879         free(src);
 880         return ret;
 881 }