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