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 (opkg_conf_load())
 124                 goto err1;
 125
 126         if (pkg_hash_load_feeds())
 127                 goto err2;
 128
 129         if (pkg_hash_load_status_files())
 130                 goto err2;
 131
 132         return 0;
 133
 134 err2:
 135         pkg_hash_deinit();
 136 err1:
 137         opkg_conf_deinit();
 138 err0:
 139         return -1;
 140 }
 141
 142 void
 143 opkg_free(void)
 144 {
 145 #ifdef HAVE_CURL
 146         opkg_curl_cleanup();
 147 #endif
 148         opkg_conf_deinit();
 149 }
 150
 151 int
 152 opkg_re_read_config_files(void)
 153 {
 154         pkg_hash_deinit();
 155         pkg_hash_init();
 156
 157         if (pkg_hash_load_feeds())
 158                 goto err;
 159
 160         if (pkg_hash_load_status_files())
 161                 goto err;
 162
 163         return 0;
 164
 165 err:
 166         pkg_hash_deinit();
 167         return -1;
 168 }
 169
 170 void
 171 opkg_get_option(char *option, void **value)
 172 {
 173         int i = 0;
 174         extern opkg_option_t options[];
 175
 176         /* look up the option
 177          * TODO: this would be much better as a hash table
 178          */
 179         while (options[i].name) {
 180                 if (strcmp(options[i].name, option) != 0) {
 181                         i++;
 182                         continue;
 183                 }
 184         }
 185
 186         /* get the option */
 187         switch (options[i].type) {
 188         case OPKG_OPT_TYPE_BOOL:
 189                 *((int *) value) = *((int *) options[i].value);
 190                 return;
 191
 192         case OPKG_OPT_TYPE_INT:
 193                 *((int *) value) = *((int *) options[i].value);
 194                 return;
 195
 196         case OPKG_OPT_TYPE_STRING:
 197                 *((char **) value) = xstrdup(options[i].value);
 198                 return;
 199         }
 200
 201 }
 202
 203 void
 204 opkg_set_option(char *option, void *value)
 205 {
 206         int i = 0, found = 0;
 207         extern opkg_option_t options[];
 208
 209         opkg_assert(option != NULL);
 210         opkg_assert(value != NULL);
 211
 212         /* look up the option
 213          * TODO: this would be much better as a hash table
 214          */
 215         while (options[i].name) {
 216                 if (strcmp(options[i].name, option) == 0) {
 217                         found = 1;
 218                         break;
 219                 }
 220                 i++;
 221         }
 222
 223         if (!found) {
 224                 opkg_msg(ERROR, "Invalid option: %s\n", option);
 225                 return;
 226         }
 227
 228         /* set the option */
 229         switch (options[i].type) {
 230         case OPKG_OPT_TYPE_BOOL:
 231                 if (*((int *) value) == 0)
 232                         *((int *) options[i].value) = 0;
 233                 else
 234                         *((int *) options[i].value) = 1;
 235                 return;
 236
 237         case OPKG_OPT_TYPE_INT:
 238                 *((int *) options[i].value) = *((int *) value);
 239                 return;
 240
 241         case OPKG_OPT_TYPE_STRING:
 242                 *((char **) options[i].value) = xstrdup(value);
 243                 return;
 244         }
 245
 246 }
 247
 248 /**
 249  * @brief libopkg API: Install package
 250  * @param package_name The name of package in which is going to install
 251  * @param progress_callback The callback function that report the status to caller.
 252  */
 253 int
 254 opkg_install_package(const char *package_name,
 255                 opkg_progress_callback_t progress_callback,
 256                 void *user_data)
 257 {
 258         int err;
 259         char *stripped_filename;
 260         opkg_progress_data_t pdata;
 261         pkg_t *old, *new;
 262         pkg_vec_t *deps, *all;
 263         int i, ndepends;
 264         char **unresolved = NULL;
 265
 266         opkg_assert(package_name != NULL);
 267
 268         /* ... */
 269         pkg_info_preinstall_check();
 270
 271
 272         /* check to ensure package is not already installed */
 273         old = pkg_hash_fetch_installed_by_name(package_name);
 274         if (old) {
 275                 opkg_msg(ERROR, "Package %s is already installed\n",
 276                                 package_name);
 277                 return -1;
 278         }
 279
 280         new = pkg_hash_fetch_best_installation_candidate_by_name(package_name);
 281         if (!new) {
 282                 opkg_msg(ERROR, "Couldn't find package %s\n", package_name);
 283                 return -1;
 284         }
 285
 286         new->state_flag |= SF_USER;
 287
 288         pdata.action = -1;
 289         pdata.pkg = new;
 290
 291         progress(pdata, 0);
 292
 293         /* find dependancies and download them */
 294         deps = pkg_vec_alloc();
 295         /* this function does not return the original package, so we insert it later */
 296         ndepends = pkg_hash_fetch_unsatisfied_dependencies(new, deps,
 297                         &unresolved);
 298         if (unresolved) {
 299                 char **tmp = unresolved;
 300                 opkg_msg(ERROR, "Couldn't satisfy the following dependencies"
 301                                " for %s:\n", package_name);
 302                 while (*tmp) {
 303                         opkg_msg(ERROR, "\t%s", *tmp);
 304                         free(*tmp);
 305                         tmp++;
 306                 }
 307                 free(unresolved);
 308                 pkg_vec_free(deps);
 309                 opkg_message(ERROR, "\n");
 310                 return -1;
 311         }
 312
 313         /* insert the package we are installing so that we download it */
 314         pkg_vec_insert(deps, new);
 315
 316         /* download package and dependencies */
 317         for (i = 0; i < deps->len; i++) {
 318                 pkg_t *pkg;
 319                 struct _curl_cb_data cb_data;
 320                 char *url;
 321
 322                 pkg = deps->pkgs[i];
 323                 if (pkg->local_filename)
 324                         continue;
 325
 326                 pdata.pkg = pkg;
 327                 pdata.action = OPKG_DOWNLOAD;
 328
 329                 if (pkg->src == NULL) {
 330                         opkg_msg(ERROR, "Package %s not available from any "
 331                                         "configured src\n", package_name);
 332                         return -1;
 333                 }
 334
 335                 sprintf_alloc(&url, "%s/%s", pkg->src->value, pkg->filename);
 336
 337                 /* Get the filename part, without any directory */
 338                 stripped_filename = strrchr(pkg->filename, '/');
 339                 if (!stripped_filename)
 340                         stripped_filename = pkg->filename;
 341
 342                 sprintf_alloc(&pkg->local_filename, "%s/%s", conf->tmp_dir,
 343                               stripped_filename);
 344
 345                 cb_data.cb = progress_callback;
 346                 cb_data.progress_data = &pdata;
 347                 cb_data.user_data = user_data;
 348                 /* 75% of "install" progress is for downloading */
 349                 cb_data.start_range = 75 * i / deps->len;
 350                 cb_data.finish_range = 75 * (i + 1) / deps->len;
 351
 352                 err = opkg_download(url, pkg->local_filename,
 353                                     (curl_progress_func) curl_progress_cb,
 354                                     &cb_data);
 355                 free(url);
 356
 357                 if (err) {
 358                         pkg_vec_free(deps);
 359                         return -1;
 360                 }
 361
 362         }
 363         pkg_vec_free(deps);
 364
 365         /* clear depenacy checked marks, left by pkg_hash_fetch_unsatisfied_dependencies */
 366         all = pkg_vec_alloc();
 367         pkg_hash_fetch_available(all);
 368         for (i = 0; i < all->len; i++) {
 369                 all->pkgs[i]->parent->dependencies_checked = 0;
 370         }
 371         pkg_vec_free(all);
 372
 373
 374         /* 75% of "install" progress is for downloading */
 375         pdata.pkg = new;
 376         pdata.action = OPKG_INSTALL;
 377         progress(pdata, 75);
 378
 379         /* unpack the package */
 380         err = opkg_install_pkg(new, 0);
 381
 382         if (err) {
 383                 return -1;
 384         }
 385
 386         progress(pdata, 75);
 387
 388         /* run configure scripts, etc. */
 389         err = opkg_configure_packages(NULL);
 390         if (err) {
 391                 return -1;
 392         }
 393
 394         /* write out status files and file lists */
 395         opkg_conf_write_status_files();
 396         pkg_write_changed_filelists();
 397
 398         progress(pdata, 100);
 399         return 0;
 400 }
 401
 402 int
 403 opkg_remove_package(const char *package_name,
 404                 opkg_progress_callback_t progress_callback, void *user_data)
 405 {
 406         int err;
 407         pkg_t *pkg = NULL;
 408         pkg_t *pkg_to_remove;
 409         opkg_progress_data_t pdata;
 410
 411         opkg_assert(package_name != NULL);
 412
 413         pkg_info_preinstall_check();
 414
 415         pkg = pkg_hash_fetch_installed_by_name(package_name);
 416
 417         if (pkg == NULL || pkg->state_status == SS_NOT_INSTALLED) {
 418                 opkg_msg(ERROR, "Package %s not installed\n", package_name);
 419                 return -1;
 420         }
 421
 422         pdata.action = OPKG_REMOVE;
 423         pdata.pkg = pkg;
 424         progress(pdata, 0);
 425
 426         if (conf->restrict_to_default_dest) {
 427                 pkg_to_remove = pkg_hash_fetch_installed_by_name_dest(pkg->name,
 428                                                       conf->default_dest);
 429         } else {
 430                 pkg_to_remove = pkg_hash_fetch_installed_by_name(pkg->name);
 431         }
 432
 433
 434         progress(pdata, 75);
 435
 436         err = opkg_remove_pkg(pkg_to_remove, 0);
 437
 438         /* write out status files and file lists */
 439         opkg_conf_write_status_files();
 440         pkg_write_changed_filelists();
 441
 442
 443         progress(pdata, 100);
 444         return (err) ? -1 : 0;
 445 }
 446
 447 int
 448 opkg_upgrade_package(const char *package_name,
 449                 opkg_progress_callback_t progress_callback,
 450                 void *user_data)
 451 {
 452         int err;
 453         pkg_t *pkg;
 454         opkg_progress_data_t pdata;
 455
 456         opkg_assert(package_name != NULL);
 457
 458         pkg_info_preinstall_check();
 459
 460         if (conf->restrict_to_default_dest) {
 461                 pkg = pkg_hash_fetch_installed_by_name_dest(package_name,
 462                                                             conf->default_dest);
 463         } else {
 464                 pkg = pkg_hash_fetch_installed_by_name(package_name);
 465         }
 466
 467         if (!pkg) {
 468                 opkg_msg(ERROR, "Package %s not installed\n", package_name);
 469                 return -1;
 470         }
 471
 472         pdata.action = OPKG_INSTALL;
 473         pdata.pkg = pkg;
 474         progress(pdata, 0);
 475
 476         err = opkg_upgrade_pkg(pkg);
 477         if (err) {
 478                 return -1;
 479         }
 480         progress(pdata, 75);
 481
 482         err = opkg_configure_packages(NULL);
 483         if (err) {
 484                 return -1;
 485         }
 486
 487         /* write out status files and file lists */
 488         opkg_conf_write_status_files();
 489         pkg_write_changed_filelists();
 490
 491         progress(pdata, 100);
 492         return 0;
 493 }
 494
 495 int
 496 opkg_upgrade_all(opkg_progress_callback_t progress_callback, void *user_data)
 497 {
 498         pkg_vec_t *installed;
 499         int err = 0;
 500         int i;
 501         pkg_t *pkg;
 502         opkg_progress_data_t pdata;
 503
 504         pdata.action = OPKG_INSTALL;
 505         pdata.pkg = NULL;
 506
 507         progress(pdata, 0);
 508
 509         installed = pkg_vec_alloc();
 510         pkg_info_preinstall_check();
 511
 512         pkg_hash_fetch_all_installed(installed);
 513         for (i = 0; i < installed->len; i++) {
 514                 pkg = installed->pkgs[i];
 515
 516                 pdata.pkg = pkg;
 517                 progress(pdata, 99 * i / installed->len);
 518
 519                 err += opkg_upgrade_pkg(pkg);
 520         }
 521         pkg_vec_free(installed);
 522
 523         if (err)
 524                 return 1;
 525
 526         err = opkg_configure_packages(NULL);
 527         if (err)
 528                 return 1;
 529
 530         /* write out status files and file lists */
 531         opkg_conf_write_status_files();
 532         pkg_write_changed_filelists();
 533
 534         pdata.pkg = NULL;
 535         progress(pdata, 100);
 536         return 0;
 537 }
 538
 539 int
 540 opkg_update_package_lists(opkg_progress_callback_t progress_callback,
 541                         void *user_data)
 542 {
 543         char *tmp;
 544         int err, result = 0;
 545         char *lists_dir;
 546         pkg_src_list_elt_t *iter;
 547         pkg_src_t *src;
 548         int sources_list_count, sources_done;
 549         opkg_progress_data_t pdata;
 550
 551         pdata.action = OPKG_DOWNLOAD;
 552         pdata.pkg = NULL;
 553         progress(pdata, 0);
 554
 555         sprintf_alloc(&lists_dir, "%s", (conf->restrict_to_default_dest)
 556                 ? conf->default_dest->lists_dir : conf->lists_dir);
 557
 558         if (!file_is_dir(lists_dir)) {
 559                 if (file_exists(lists_dir)) {
 560                         opkg_msg(ERROR, "%s is not a directory\n", lists_dir);
 561                         free(lists_dir);
 562                         return 1;
 563                 }
 564
 565                 err = file_mkdir_hier(lists_dir, 0755);
 566                 if (err) {
 567                         opkg_msg(ERROR, "Couldn't create lists_dir %s\n",
 568                                         lists_dir);
 569                         free(lists_dir);
 570                         return 1;
 571                 }
 572         }
 573
 574         sprintf_alloc(&tmp, "%s/update-XXXXXX", conf->tmp_dir);
 575         if (mkdtemp(tmp) == NULL) {
 576                 opkg_perror(ERROR, "Coundn't create temporary directory %s",
 577                                 tmp);
 578                 free(lists_dir);
 579                 free(tmp);
 580                 return 1;
 581         }
 582
 583         /* count the number of sources so we can give some progress updates */
 584         sources_list_count = 0;
 585         sources_done = 0;
 586         list_for_each_entry(iter, &conf->pkg_src_list.head, node) {
 587                 sources_list_count++;
 588         }
 589
 590         list_for_each_entry(iter, &conf->pkg_src_list.head, node) {
 591                 char *url, *list_file_name = NULL;
 592
 593                 src = (pkg_src_t *) iter->data;
 594
 595                 if (src->extra_data)    /* debian style? */
 596                         sprintf_alloc(&url, "%s/%s/%s", src->value,
 597                                       src->extra_data,
 598                                       src->gzip ? "Packages.gz" : "Packages");
 599                 else
 600                         sprintf_alloc(&url, "%s/%s", src->value,
 601                                       src->gzip ? "Packages.gz" : "Packages");
 602
 603                 sprintf_alloc(&list_file_name, "%s/%s", lists_dir, src->name);
 604                 if (src->gzip) {
 605                         FILE *in, *out;
 606                         struct _curl_cb_data cb_data;
 607                         char *tmp_file_name = NULL;
 608
 609                         sprintf_alloc(&tmp_file_name, "%s/%s.gz", tmp,
 610                                       src->name);
 611
 612                         opkg_msg(INFO, "Downloading %s to %s...\n", url,
 613                                         tmp_file_name);
 614
 615                         cb_data.cb = progress_callback;
 616                         cb_data.progress_data = &pdata;
 617                         cb_data.user_data = user_data;
 618                         cb_data.start_range =
 619                             100 * sources_done / sources_list_count;
 620                         cb_data.finish_range =
 621                             100 * (sources_done + 1) / sources_list_count;
 622
 623                         err = opkg_download(url, tmp_file_name,
 624                                           (curl_progress_func) curl_progress_cb,
 625                                           &cb_data);
 626
 627                         if (err == 0) {
 628                                 opkg_msg(INFO, "Inflating %s...\n",
 629                                                 tmp_file_name);
 630                                 in = fopen(tmp_file_name, "r");
 631                                 out = fopen(list_file_name, "w");
 632                                 if (in && out)
 633                                         unzip(in, out);
 634                                 else
 635                                         err = 1;
 636                                 if (in)
 637                                         fclose(in);
 638                                 if (out)
 639                                         fclose(out);
 640                                 unlink(tmp_file_name);
 641                         }
 642                         free(tmp_file_name);
 643                 } else
 644                         err = opkg_download(url, list_file_name, NULL, NULL);
 645
 646                 if (err) {
 647                         opkg_msg(ERROR, "Couldn't retrieve %s\n", url);
 648                         result = -1;
 649                 }
 650                 free(url);
 651
 652 #if defined(HAVE_GPGME) || defined(HAVE_OPENSSL)
 653                 if (conf->check_signature) {
 654                         char *sig_file_name;
 655                         /* download detached signitures to verify the package lists */
 656                         /* get the url for the sig file */
 657                         if (src->extra_data)    /* debian style? */
 658                                 sprintf_alloc(&url, "%s/%s/%s", src->value,
 659                                               src->extra_data, "Packages.sig");
 660                         else
 661                                 sprintf_alloc(&url, "%s/%s", src->value,
 662                                               "Packages.sig");
 663
 664                         /* create filename for signature */
 665                         sprintf_alloc(&sig_file_name, "%s/%s.sig", lists_dir,
 666                                       src->name);
 667
 668                         /* make sure there is no existing signature file */
 669                         unlink(sig_file_name);
 670
 671                         err = opkg_download(url, sig_file_name, NULL, NULL);
 672                         if (err) {
 673                                 opkg_msg(ERROR, "Couldn't retrieve %s\n", url);
 674                         } else {
 675                                 int err;
 676                                 err = opkg_verify_file(list_file_name,
 677                                                      sig_file_name);
 678                                 if (err == 0) {
 679                                         opkg_msg(INFO, "Signature check "
 680                                                         "passed for %s",
 681                                                         list_file_name);
 682                                 } else {
 683                                         opkg_msg(ERROR, "Signature check "
 684                                                         "failed for %s",
 685                                                         list_file_name);
 686                                 }
 687                         }
 688                         free(sig_file_name);
 689                         free(list_file_name);
 690                         free(url);
 691                 }
 692 #else
 693                 opkg_msg(INFO, "Signature check skipped for %s as GPG support"
 694                                 " has not been enabled in this build\n",
 695                                 list_file_name);
 696 #endif
 697
 698                 sources_done++;
 699                 progress(pdata, 100 * sources_done / sources_list_count);
 700         }
 701
 702         rmdir(tmp);
 703         free(tmp);
 704         free(lists_dir);
 705
 706         /* Now re-read the package lists to update package hash tables. */
 707         opkg_re_read_config_files();
 708
 709         return result;
 710 }
 711
 712 static int
 713 pkg_compare_names_and_version(const void *a0, const void *b0)
 714 {
 715         const pkg_t *a = *(const pkg_t **)a0;
 716         const pkg_t *b = *(const pkg_t **)b0;
 717         int ret;
 718
 719         ret = strcmp(a->name, b->name);
 720
 721         if (ret == 0)
 722                 ret = pkg_compare_versions(a, b);
 723
 724         return ret;
 725 }
 726
 727 int
 728 opkg_list_packages(opkg_package_callback_t callback, void *user_data)
 729 {
 730         pkg_vec_t *all;
 731         int i;
 732
 733         opkg_assert(callback);
 734
 735         all = pkg_vec_alloc();
 736         pkg_hash_fetch_available(all);
 737
 738         pkg_vec_sort(all, pkg_compare_names_and_version);
 739
 740         for (i = 0; i < all->len; i++) {
 741                 pkg_t *pkg;
 742
 743                 pkg = all->pkgs[i];
 744
 745                 callback(pkg, user_data);
 746         }
 747
 748         pkg_vec_free(all);
 749
 750         return 0;
 751 }
 752
 753 int
 754 opkg_list_upgradable_packages(opkg_package_callback_t callback, void *user_data)
 755 {
 756         struct active_list *head;
 757         struct active_list *node;
 758         pkg_t *old = NULL, *new = NULL;
 759
 760         opkg_assert(callback);
 761
 762         /* ensure all data is valid */
 763         pkg_info_preinstall_check();
 764
 765         head = prepare_upgrade_list();
 766         for (node = active_list_next(head, head); node;
 767              node = active_list_next(head, node)) {
 768                 old = list_entry(node, pkg_t, list);
 769                 new = pkg_hash_fetch_best_installation_candidate_by_name(old->name);
 770                 if (new == NULL)
 771                         continue;
 772                 callback(new, user_data);
 773         }
 774         active_list_head_delete(head);
 775         return 0;
 776 }
 777
 778 pkg_t *
 779 opkg_find_package(const char *name, const char *ver, const char *arch,
 780                 const char *repo)
 781 {
 782         pkg_t *pkg = NULL;
 783         pkg_vec_t *all;
 784         int i;
 785 #define sstrcmp(x,y) (x && y) ? strcmp (x, y) : 0
 786
 787         all = pkg_vec_alloc();
 788         pkg_hash_fetch_available(all);
 789         for (i = 0; i < all->len; i++) {
 790                 char *pkgv;
 791
 792                 pkg = all->pkgs[i];
 793
 794                 /* check name */
 795                 if (sstrcmp(pkg->name, name))
 796                         continue;
 797
 798                 /* check version */
 799                 pkgv = pkg_version_str_alloc(pkg);
 800                 if (sstrcmp(pkgv, ver)) {
 801                         free(pkgv);
 802                         continue;
 803                 }
 804                 free(pkgv);
 805
 806                 /* check architecture */
 807                 if (arch) {
 808                         if (sstrcmp(pkg->architecture, arch))
 809                                 continue;
 810                 }
 811
 812                 /* check repository */
 813                 if (repo) {
 814                         if (sstrcmp(pkg->src->name, repo))
 815                                 continue;
 816                 }
 817
 818                 /* match found */
 819                 break;
 820         }
 821
 822         pkg_vec_free(all);
 823
 824         return pkg;
 825 }
 826
 827 /**
 828  * @brief Check the accessibility of repositories.
 829  * @return return how many repositories cannot access. 0 means all okay.
 830  */
 831 int
 832 opkg_repository_accessibility_check(void)
 833 {
 834         pkg_src_list_elt_t *iter;
 835         str_list_elt_t *iter1;
 836         str_list_t *src;
 837         int repositories = 0;
 838         int ret = 0;
 839         char *repo_ptr;
 840         char *stmp;
 841         char *host, *end;
 842
 843         src = str_list_alloc();
 844
 845         list_for_each_entry(iter, &conf->pkg_src_list.head, node) {
 846                 host = strstr(((pkg_src_t *)iter->data)->value, "://") + 3;
 847                 end = index(host, '/');
 848                 if (strstr(((pkg_src_t *) iter->data)->value, "://") && end)
 849                         stmp = xstrndup(((pkg_src_t *) iter->data)->value,
 850                                      end - ((pkg_src_t *) iter->data)->value);
 851                 else
 852                         stmp = xstrdup(((pkg_src_t *) iter->data)->value);
 853
 854                 for (iter1 = str_list_first(src); iter1;
 855                      iter1 = str_list_next(src, iter1)) {
 856                         if (strstr(iter1->data, stmp))
 857                                 break;
 858                 }
 859                 if (iter1)
 860                         continue;
 861
 862                 sprintf_alloc(&repo_ptr, "%s/index.html", stmp);
 863                 free(stmp);
 864
 865                 str_list_append(src, repo_ptr);
 866                 free(repo_ptr);
 867                 repositories++;
 868         }
 869
 870         while (repositories > 0) {
 871                 iter1 = str_list_pop(src);
 872                 repositories--;
 873
 874                 if (opkg_download(iter1->data, "/dev/null", NULL, NULL))
 875                         ret++;
 876                 str_list_elt_deinit(iter1);
 877         }
 878
 879         free(src);
 880
 881         return ret;
 882 }