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 err0;
 125
 126         if (pkg_hash_load_feeds())
 127                 goto err1;
 128
 129         if (pkg_hash_load_status_files())
 130                 goto err1;
 131
 132         return 0;
 133
 134 err1:
 135         pkg_hash_deinit();
 136 err0:
 137         opkg_conf_deinit();
 138         return -1;
 139 }
 140
 141 void
 142 opkg_free(void)
 143 {
 144 #ifdef HAVE_CURL
 145         opkg_curl_cleanup();
 146 #endif
 147         opkg_conf_deinit();
 148 }
 149
 150 int
 151 opkg_re_read_config_files(void)
 152 {
 153         pkg_hash_deinit();
 154         pkg_hash_init();
 155
 156         if (pkg_hash_load_feeds())
 157                 goto err;
 158
 159         if (pkg_hash_load_status_files())
 160                 goto err;
 161
 162         return 0;
 163
 164 err:
 165         pkg_hash_deinit();
 166         return -1;
 167 }
 168
 169 void
 170 opkg_get_option(char *option, void **value)
 171 {
 172         int i = 0;
 173         extern opkg_option_t options[];
 174
 175         /* look up the option
 176          * TODO: this would be much better as a hash table
 177          */
 178         while (options[i].name) {
 179                 if (strcmp(options[i].name, option) != 0) {
 180                         i++;
 181                         continue;
 182                 }
 183         }
 184
 185         /* get the option */
 186         switch (options[i].type) {
 187         case OPKG_OPT_TYPE_BOOL:
 188                 *((int *) value) = *((int *) options[i].value);
 189                 return;
 190
 191         case OPKG_OPT_TYPE_INT:
 192                 *((int *) value) = *((int *) options[i].value);
 193                 return;
 194
 195         case OPKG_OPT_TYPE_STRING:
 196                 *((char **) value) = xstrdup(options[i].value);
 197                 return;
 198         }
 199
 200 }
 201
 202 void
 203 opkg_set_option(char *option, void *value)
 204 {
 205         int i = 0, found = 0;
 206         extern opkg_option_t options[];
 207
 208         opkg_assert(option != NULL);
 209         opkg_assert(value != NULL);
 210
 211         /* look up the option
 212          * TODO: this would be much better as a hash table
 213          */
 214         while (options[i].name) {
 215                 if (strcmp(options[i].name, option) == 0) {
 216                         found = 1;
 217                         break;
 218                 }
 219                 i++;
 220         }
 221
 222         if (!found) {
 223                 opkg_msg(ERROR, "Invalid option: %s\n", option);
 224                 return;
 225         }
 226
 227         /* set the option */
 228         switch (options[i].type) {
 229         case OPKG_OPT_TYPE_BOOL:
 230                 if (*((int *) value) == 0)
 231                         *((int *) options[i].value) = 0;
 232                 else
 233                         *((int *) options[i].value) = 1;
 234                 return;
 235
 236         case OPKG_OPT_TYPE_INT:
 237                 *((int *) options[i].value) = *((int *) value);
 238                 return;
 239
 240         case OPKG_OPT_TYPE_STRING:
 241                 *((char **) options[i].value) = xstrdup(value);
 242                 return;
 243         }
 244
 245 }
 246
 247 /**
 248  * @brief libopkg API: Install package
 249  * @param package_name The name of package in which is going to install
 250  * @param progress_callback The callback function that report the status to caller.
 251  */
 252 int
 253 opkg_install_package(const char *package_name,
 254                 opkg_progress_callback_t progress_callback,
 255                 void *user_data)
 256 {
 257         int err;
 258         char *stripped_filename;
 259         opkg_progress_data_t pdata;
 260         pkg_t *old, *new;
 261         pkg_vec_t *deps, *all;
 262         int i, ndepends;
 263         char **unresolved = NULL;
 264
 265         opkg_assert(package_name != NULL);
 266
 267         /* ... */
 268         pkg_info_preinstall_check();
 269
 270
 271         /* check to ensure package is not already installed */
 272         old = pkg_hash_fetch_installed_by_name(package_name);
 273         if (old) {
 274                 opkg_msg(ERROR, "Package %s is already installed\n",
 275                                 package_name);
 276                 return -1;
 277         }
 278
 279         new = pkg_hash_fetch_best_installation_candidate_by_name(package_name);
 280         if (!new) {
 281                 opkg_msg(ERROR, "Couldn't find package %s\n", package_name);
 282                 return -1;
 283         }
 284
 285         new->state_flag |= SF_USER;
 286
 287         pdata.action = -1;
 288         pdata.pkg = new;
 289
 290         progress(pdata, 0);
 291
 292         /* find dependancies and download them */
 293         deps = pkg_vec_alloc();
 294         /* this function does not return the original package, so we insert it later */
 295         ndepends = pkg_hash_fetch_unsatisfied_dependencies(new, deps,
 296                         &unresolved);
 297         if (unresolved) {
 298                 char **tmp = unresolved;
 299                 opkg_msg(ERROR, "Couldn't satisfy the following dependencies"
 300                                " for %s:\n", package_name);
 301                 while (*tmp) {
 302                         opkg_msg(ERROR, "\t%s", *tmp);
 303                         free(*tmp);
 304                         tmp++;
 305                 }
 306                 free(unresolved);
 307                 pkg_vec_free(deps);
 308                 opkg_message(ERROR, "\n");
 309                 return -1;
 310         }
 311
 312         /* insert the package we are installing so that we download it */
 313         pkg_vec_insert(deps, new);
 314
 315         /* download package and dependencies */
 316         for (i = 0; i < deps->len; i++) {
 317                 pkg_t *pkg;
 318                 struct _curl_cb_data cb_data;
 319                 char *url;
 320
 321                 pkg = deps->pkgs[i];
 322                 if (pkg->local_filename)
 323                         continue;
 324
 325                 pdata.pkg = pkg;
 326                 pdata.action = OPKG_DOWNLOAD;
 327
 328                 if (pkg->src == NULL) {
 329                         opkg_msg(ERROR, "Package %s not available from any "
 330                                         "configured src\n", package_name);
 331                         return -1;
 332                 }
 333
 334                 sprintf_alloc(&url, "%s/%s", pkg->src->value, pkg->filename);
 335
 336                 /* Get the filename part, without any directory */
 337                 stripped_filename = strrchr(pkg->filename, '/');
 338                 if (!stripped_filename)
 339                         stripped_filename = pkg->filename;
 340
 341                 sprintf_alloc(&pkg->local_filename, "%s/%s", conf->tmp_dir,
 342                               stripped_filename);
 343
 344                 cb_data.cb = progress_callback;
 345                 cb_data.progress_data = &pdata;
 346                 cb_data.user_data = user_data;
 347                 /* 75% of "install" progress is for downloading */
 348                 cb_data.start_range = 75 * i / deps->len;
 349                 cb_data.finish_range = 75 * (i + 1) / deps->len;
 350
 351                 err = opkg_download(url, pkg->local_filename,
 352                                     (curl_progress_func) curl_progress_cb,
 353                                     &cb_data);
 354                 free(url);
 355
 356                 if (err) {
 357                         pkg_vec_free(deps);
 358                         return -1;
 359                 }
 360
 361         }
 362         pkg_vec_free(deps);
 363
 364         /* clear depenacy checked marks, left by pkg_hash_fetch_unsatisfied_dependencies */
 365         all = pkg_vec_alloc();
 366         pkg_hash_fetch_available(all);
 367         for (i = 0; i < all->len; i++) {
 368                 all->pkgs[i]->parent->dependencies_checked = 0;
 369         }
 370         pkg_vec_free(all);
 371
 372
 373         /* 75% of "install" progress is for downloading */
 374         pdata.pkg = new;
 375         pdata.action = OPKG_INSTALL;
 376         progress(pdata, 75);
 377
 378         /* unpack the package */
 379         err = opkg_install_pkg(new, 0);
 380
 381         if (err) {
 382                 return -1;
 383         }
 384
 385         progress(pdata, 75);
 386
 387         /* run configure scripts, etc. */
 388         err = opkg_configure_packages(NULL);
 389         if (err) {
 390                 return -1;
 391         }
 392
 393         /* write out status files and file lists */
 394         opkg_conf_write_status_files();
 395         pkg_write_changed_filelists();
 396
 397         progress(pdata, 100);
 398         return 0;
 399 }
 400
 401 int
 402 opkg_remove_package(const char *package_name,
 403                 opkg_progress_callback_t progress_callback, void *user_data)
 404 {
 405         int err;
 406         pkg_t *pkg = NULL;
 407         pkg_t *pkg_to_remove;
 408         opkg_progress_data_t pdata;
 409
 410         opkg_assert(package_name != NULL);
 411
 412         pkg_info_preinstall_check();
 413
 414         pkg = pkg_hash_fetch_installed_by_name(package_name);
 415
 416         if (pkg == NULL || pkg->state_status == SS_NOT_INSTALLED) {
 417                 opkg_msg(ERROR, "Package %s not installed\n", package_name);
 418                 return -1;
 419         }
 420
 421         pdata.action = OPKG_REMOVE;
 422         pdata.pkg = pkg;
 423         progress(pdata, 0);
 424
 425         if (conf->restrict_to_default_dest) {
 426                 pkg_to_remove = pkg_hash_fetch_installed_by_name_dest(pkg->name,
 427                                                       conf->default_dest);
 428         } else {
 429                 pkg_to_remove = pkg_hash_fetch_installed_by_name(pkg->name);
 430         }
 431
 432
 433         progress(pdata, 75);
 434
 435         err = opkg_remove_pkg(pkg_to_remove, 0);
 436
 437         /* write out status files and file lists */
 438         opkg_conf_write_status_files();
 439         pkg_write_changed_filelists();
 440
 441
 442         progress(pdata, 100);
 443         return (err) ? -1 : 0;
 444 }
 445
 446 int
 447 opkg_upgrade_package(const char *package_name,
 448                 opkg_progress_callback_t progress_callback,
 449                 void *user_data)
 450 {
 451         int err;
 452         pkg_t *pkg;
 453         opkg_progress_data_t pdata;
 454
 455         opkg_assert(package_name != NULL);
 456
 457         pkg_info_preinstall_check();
 458
 459         if (conf->restrict_to_default_dest) {
 460                 pkg = pkg_hash_fetch_installed_by_name_dest(package_name,
 461                                                             conf->default_dest);
 462         } else {
 463                 pkg = pkg_hash_fetch_installed_by_name(package_name);
 464         }
 465
 466         if (!pkg) {
 467                 opkg_msg(ERROR, "Package %s not installed\n", package_name);
 468                 return -1;
 469         }
 470
 471         pdata.action = OPKG_INSTALL;
 472         pdata.pkg = pkg;
 473         progress(pdata, 0);
 474
 475         err = opkg_upgrade_pkg(pkg);
 476         if (err) {
 477                 return -1;
 478         }
 479         progress(pdata, 75);
 480
 481         err = opkg_configure_packages(NULL);
 482         if (err) {
 483                 return -1;
 484         }
 485
 486         /* write out status files and file lists */
 487         opkg_conf_write_status_files();
 488         pkg_write_changed_filelists();
 489
 490         progress(pdata, 100);
 491         return 0;
 492 }
 493
 494 int
 495 opkg_upgrade_all(opkg_progress_callback_t progress_callback, void *user_data)
 496 {
 497         pkg_vec_t *installed;
 498         int err = 0;
 499         int i;
 500         pkg_t *pkg;
 501         opkg_progress_data_t pdata;
 502
 503         pdata.action = OPKG_INSTALL;
 504         pdata.pkg = NULL;
 505
 506         progress(pdata, 0);
 507
 508         installed = pkg_vec_alloc();
 509         pkg_info_preinstall_check();
 510
 511         pkg_hash_fetch_all_installed(installed);
 512         for (i = 0; i < installed->len; i++) {
 513                 pkg = installed->pkgs[i];
 514
 515                 pdata.pkg = pkg;
 516                 progress(pdata, 99 * i / installed->len);
 517
 518                 err += opkg_upgrade_pkg(pkg);
 519         }
 520         pkg_vec_free(installed);
 521
 522         if (err)
 523                 return 1;
 524
 525         err = opkg_configure_packages(NULL);
 526         if (err)
 527                 return 1;
 528
 529         /* write out status files and file lists */
 530         opkg_conf_write_status_files();
 531         pkg_write_changed_filelists();
 532
 533         pdata.pkg = NULL;
 534         progress(pdata, 100);
 535         return 0;
 536 }
 537
 538 int
 539 opkg_update_package_lists(opkg_progress_callback_t progress_callback,
 540                         void *user_data)
 541 {
 542         char *tmp;
 543         int err, result = 0;
 544         char *lists_dir;
 545         pkg_src_list_elt_t *iter;
 546         pkg_src_t *src;
 547         int sources_list_count, sources_done;
 548         opkg_progress_data_t pdata;
 549
 550         pdata.action = OPKG_DOWNLOAD;
 551         pdata.pkg = NULL;
 552         progress(pdata, 0);
 553
 554         sprintf_alloc(&lists_dir, "%s", (conf->restrict_to_default_dest)
 555                 ? conf->default_dest->lists_dir : conf->lists_dir);
 556
 557         if (!file_is_dir(lists_dir)) {
 558                 if (file_exists(lists_dir)) {
 559                         opkg_msg(ERROR, "%s is not a directory\n", lists_dir);
 560                         free(lists_dir);
 561                         return 1;
 562                 }
 563
 564                 err = file_mkdir_hier(lists_dir, 0755);
 565                 if (err) {
 566                         opkg_msg(ERROR, "Couldn't create lists_dir %s\n",
 567                                         lists_dir);
 568                         free(lists_dir);
 569                         return 1;
 570                 }
 571         }
 572
 573         sprintf_alloc(&tmp, "%s/update-XXXXXX", conf->tmp_dir);
 574         if (mkdtemp(tmp) == NULL) {
 575                 opkg_perror(ERROR, "Coundn't create temporary directory %s",
 576                                 tmp);
 577                 free(lists_dir);
 578                 free(tmp);
 579                 return 1;
 580         }
 581
 582         /* count the number of sources so we can give some progress updates */
 583         sources_list_count = 0;
 584         sources_done = 0;
 585         list_for_each_entry(iter, &conf->pkg_src_list.head, node) {
 586                 sources_list_count++;
 587         }
 588
 589         list_for_each_entry(iter, &conf->pkg_src_list.head, node) {
 590                 char *url, *list_file_name = NULL;
 591
 592                 src = (pkg_src_t *) iter->data;
 593
 594                 if (src->extra_data)    /* debian style? */
 595                         sprintf_alloc(&url, "%s/%s/%s", src->value,
 596                                       src->extra_data,
 597                                       src->gzip ? "Packages.gz" : "Packages");
 598                 else
 599                         sprintf_alloc(&url, "%s/%s", src->value,
 600                                       src->gzip ? "Packages.gz" : "Packages");
 601
 602                 sprintf_alloc(&list_file_name, "%s/%s", lists_dir, src->name);
 603                 if (src->gzip) {
 604                         FILE *in, *out;
 605                         struct _curl_cb_data cb_data;
 606                         char *tmp_file_name = NULL;
 607
 608                         sprintf_alloc(&tmp_file_name, "%s/%s.gz", tmp,
 609                                       src->name);
 610
 611                         opkg_msg(INFO, "Downloading %s to %s...\n", url,
 612                                         tmp_file_name);
 613
 614                         cb_data.cb = progress_callback;
 615                         cb_data.progress_data = &pdata;
 616                         cb_data.user_data = user_data;
 617                         cb_data.start_range =
 618                             100 * sources_done / sources_list_count;
 619                         cb_data.finish_range =
 620                             100 * (sources_done + 1) / sources_list_count;
 621
 622                         err = opkg_download(url, tmp_file_name,
 623                                           (curl_progress_func) curl_progress_cb,
 624                                           &cb_data);
 625
 626                         if (err == 0) {
 627                                 opkg_msg(INFO, "Inflating %s...\n",
 628                                                 tmp_file_name);
 629                                 in = fopen(tmp_file_name, "r");
 630                                 out = fopen(list_file_name, "w");
 631                                 if (in && out)
 632                                         unzip(in, out);
 633                                 else
 634                                         err = 1;
 635                                 if (in)
 636                                         fclose(in);
 637                                 if (out)
 638                                         fclose(out);
 639                                 unlink(tmp_file_name);
 640                         }
 641                         free(tmp_file_name);
 642                 } else
 643                         err = opkg_download(url, list_file_name, NULL, NULL);
 644
 645                 if (err) {
 646                         opkg_msg(ERROR, "Couldn't retrieve %s\n", url);
 647                         result = -1;
 648                 }
 649                 free(url);
 650
 651 #if defined(HAVE_GPGME) || defined(HAVE_OPENSSL)
 652                 if (conf->check_signature) {
 653                         char *sig_file_name;
 654                         /* download detached signitures to verify the package lists */
 655                         /* get the url for the sig file */
 656                         if (src->extra_data)    /* debian style? */
 657                                 sprintf_alloc(&url, "%s/%s/%s", src->value,
 658                                               src->extra_data, "Packages.sig");
 659                         else
 660                                 sprintf_alloc(&url, "%s/%s", src->value,
 661                                               "Packages.sig");
 662
 663                         /* create filename for signature */
 664                         sprintf_alloc(&sig_file_name, "%s/%s.sig", lists_dir,
 665                                       src->name);
 666
 667                         /* make sure there is no existing signature file */
 668                         unlink(sig_file_name);
 669
 670                         err = opkg_download(url, sig_file_name, NULL, NULL);
 671                         if (err) {
 672                                 opkg_msg(ERROR, "Couldn't retrieve %s\n", url);
 673                         } else {
 674                                 int err;
 675                                 err = opkg_verify_file(list_file_name,
 676                                                      sig_file_name);
 677                                 if (err == 0) {
 678                                         opkg_msg(INFO, "Signature check "
 679                                                         "passed for %s",
 680                                                         list_file_name);
 681                                 } else {
 682                                         opkg_msg(ERROR, "Signature check "
 683                                                         "failed for %s",
 684                                                         list_file_name);
 685                                 }
 686                         }
 687                         free(sig_file_name);
 688                         free(list_file_name);
 689                         free(url);
 690                 }
 691 #else
 692                 opkg_msg(INFO, "Signature check skipped for %s as GPG support"
 693                                 " has not been enabled in this build\n",
 694                                 list_file_name);
 695 #endif
 696
 697                 sources_done++;
 698                 progress(pdata, 100 * sources_done / sources_list_count);
 699         }
 700
 701         rmdir(tmp);
 702         free(tmp);
 703         free(lists_dir);
 704
 705         /* Now re-read the package lists to update package hash tables. */
 706         opkg_re_read_config_files();
 707
 708         return result;
 709 }
 710
 711 static int
 712 pkg_compare_names_and_version(const void *a0, const void *b0)
 713 {
 714         const pkg_t *a = *(const pkg_t **)a0;
 715         const pkg_t *b = *(const pkg_t **)b0;
 716         int ret;
 717
 718         ret = strcmp(a->name, b->name);
 719
 720         if (ret == 0)
 721                 ret = pkg_compare_versions(a, b);
 722
 723         return ret;
 724 }
 725
 726 int
 727 opkg_list_packages(opkg_package_callback_t callback, void *user_data)
 728 {
 729         pkg_vec_t *all;
 730         int i;
 731
 732         opkg_assert(callback);
 733
 734         all = pkg_vec_alloc();
 735         pkg_hash_fetch_available(all);
 736
 737         pkg_vec_sort(all, pkg_compare_names_and_version);
 738
 739         for (i = 0; i < all->len; i++) {
 740                 pkg_t *pkg;
 741
 742                 pkg = all->pkgs[i];
 743
 744                 callback(pkg, user_data);
 745         }
 746
 747         pkg_vec_free(all);
 748
 749         return 0;
 750 }
 751
 752 int
 753 opkg_list_upgradable_packages(opkg_package_callback_t callback, void *user_data)
 754 {
 755         struct active_list *head;
 756         struct active_list *node;
 757         pkg_t *old = NULL, *new = NULL;
 758
 759         opkg_assert(callback);
 760
 761         /* ensure all data is valid */
 762         pkg_info_preinstall_check();
 763
 764         head = prepare_upgrade_list();
 765         for (node = active_list_next(head, head); node;
 766              node = active_list_next(head, node)) {
 767                 old = list_entry(node, pkg_t, list);
 768                 new = pkg_hash_fetch_best_installation_candidate_by_name(old->name);
 769                 if (new == NULL)
 770                         continue;
 771                 callback(new, user_data);
 772         }
 773         active_list_head_delete(head);
 774         return 0;
 775 }
 776
 777 pkg_t *
 778 opkg_find_package(const char *name, const char *ver, const char *arch,
 779                 const char *repo)
 780 {
 781         int pkg_found = 0;
 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                 pkg_found = 1;
 820                 break;
 821         }
 822
 823         pkg_vec_free(all);
 824
 825         return pkg_found ? pkg : NULL;
 826 }
 827
 828 /**
 829  * @brief Check the accessibility of repositories.
 830  * @return return how many repositories cannot access. 0 means all okay.
 831  */
 832 int
 833 opkg_repository_accessibility_check(void)
 834 {
 835         pkg_src_list_elt_t *iter;
 836         str_list_elt_t *iter1;
 837         str_list_t *src;
 838         int repositories = 0;
 839         int ret = 0;
 840         char *repo_ptr;
 841         char *stmp;
 842         char *host, *end;
 843
 844         src = str_list_alloc();
 845
 846         list_for_each_entry(iter, &conf->pkg_src_list.head, node) {
 847                 host = strstr(((pkg_src_t *)iter->data)->value, "://") + 3;
 848                 end = index(host, '/');
 849                 if (strstr(((pkg_src_t *) iter->data)->value, "://") && end)
 850                         stmp = xstrndup(((pkg_src_t *) iter->data)->value,
 851                                      end - ((pkg_src_t *) iter->data)->value);
 852                 else
 853                         stmp = xstrdup(((pkg_src_t *) iter->data)->value);
 854
 855                 for (iter1 = str_list_first(src); iter1;
 856                      iter1 = str_list_next(src, iter1)) {
 857                         if (strstr(iter1->data, stmp))
 858                                 break;
 859                 }
 860                 if (iter1)
 861                         continue;
 862
 863                 sprintf_alloc(&repo_ptr, "%s/index.html", stmp);
 864                 free(stmp);
 865
 866                 str_list_append(src, repo_ptr);
 867                 free(repo_ptr);
 868                 repositories++;
 869         }
 870
 871         while (repositories > 0) {
 872                 iter1 = str_list_pop(src);
 873                 repositories--;
 874
 875                 if (opkg_download(iter1->data, "/dev/null", NULL, NULL))
 876                         ret++;
 877                 str_list_elt_deinit(iter1);
 878         }
 879
 880         free(src);
 881
 882         return ret;
 883 }