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 #include "args.h"
  24
  25 #include "opkg_install.h"
  26 #include "opkg_configure.h"
  27 #include "opkg_download.h"
  28 #include "opkg_remove.h"
  29 #include "opkg_upgrade.h"
  30
  31 #include "sprintf_alloc.h"
  32 #include "file_util.h"
  33
  34 #include <libbb/libbb.h>
  35
  36 struct _opkg_t
  37 {
  38   args_t *args;
  39   opkg_conf_t *conf;
  40   opkg_option_t *options;
  41 };
  42
  43 #define opkg_assert(expr) if (!(expr)) { \
  44     printf ("opkg: file %s: line %d (%s): Assertation '%s' failed",\
  45             __FILE__, __LINE__, __PRETTY_FUNCTION__, # expr); abort (); }
  46
  47 #define progress(d, p) d.percentage = p; if (progress_callback) progress_callback (opkg, &d, user_data);
  48 #define SSTRCMP(x,y) (x && y) ? strcmp (x, y) : 0
  49
  50 /** Private Functions ***/
  51
  52 static opkg_package_t*
  53 old_pkg_to_new (pkg_t *old)
  54 {
  55   opkg_package_t *new;
  56
  57   new = opkg_package_new ();
  58
  59 #define sstrdup(x) (x) ? strdup (x) : NULL;
  60
  61   new->name = sstrdup (old->name);
  62   new->version = pkg_version_str_alloc (old);
  63   new->architecture = sstrdup (old->architecture);
  64   if (old->src)
  65     new->repository = sstrdup (old->src->name);
  66   new->description = sstrdup (old->description);
  67   new->tags = sstrdup (old->tags);
  68   new->url = sstrdup (old->url);
  69
  70   new->size = (old->size) ? atoi (old->size) : 0;
  71   new->installed = (old->state_status == SS_INSTALLED);
  72
  73   return new;
  74 }
  75
  76 static int
  77 opkg_configure_packages(opkg_conf_t *conf, char *pkg_name)
  78 {
  79   pkg_vec_t *all;
  80   int i;
  81   pkg_t *pkg;
  82   int r, err = 0;
  83
  84   all = pkg_vec_alloc ();
  85   pkg_hash_fetch_available (&conf->pkg_hash, all);
  86
  87   for (i = 0; i < all->len; i++)
  88   {
  89     pkg = all->pkgs[i];
  90
  91     if (pkg_name && fnmatch (pkg_name, pkg->name, 0))
  92       continue;
  93
  94     if (pkg->state_status == SS_UNPACKED)
  95     {
  96       r = opkg_configure (conf, pkg);
  97       if (r == 0)
  98       {
  99         pkg->state_status = SS_INSTALLED;
 100         pkg->parent->state_status = SS_INSTALLED;
 101         pkg->state_flag &= ~SF_PREFER;
 102       }
 103       else
 104       {
 105         if (!err)
 106           err = r;
 107       }
 108     }
 109   }
 110
 111   pkg_vec_free (all);
 112   return err;
 113 }
 114
 115 struct _curl_cb_data
 116 {
 117   opkg_progress_callback_t cb;
 118   opkg_progress_data_t *progress_data;
 119   opkg_t *opkg;
 120   void *user_data;
 121   int start_range;
 122   int finish_range;
 123 };
 124
 125 int
 126 curl_progress_cb (struct _curl_cb_data *cb_data,
 127                   double t,   /* dltotal */
 128                   double d,   /* dlnow */
 129                   double ultotal,
 130                   double ulnow)
 131 {
 132   int p = (t) ? d * 100 / t : 0;
 133   static int prev = -1;
 134   int progress = 0;
 135
 136   /* prevent the same value being sent twice (can occur due to rounding) */
 137   if (p == prev)
 138     return 0;
 139   prev = p;
 140
 141   if (t < 1)
 142     return 0;
 143
 144   progress = cb_data->start_range + (d / t * ((cb_data->finish_range - cb_data->start_range)));
 145   cb_data->progress_data->percentage = progress;
 146
 147   (cb_data->cb)(cb_data->opkg,
 148                 cb_data->progress_data,
 149                 cb_data->user_data);
 150
 151   return 0;
 152 }
 153
 154
 155 /*** Public API ***/
 156
 157 opkg_package_t *
 158 opkg_package_new ()
 159 {
 160
 161   opkg_package_t *p;
 162
 163   p = malloc (sizeof (opkg_package_t));
 164   memset (p, 0, sizeof (opkg_package_t));
 165
 166   return p;
 167 }
 168
 169 void
 170 opkg_package_free (opkg_package_t *p)
 171 {
 172   free (p->name);
 173   free (p->version);
 174   free (p->architecture);
 175   free (p->description);
 176   free (p->tags);
 177   free (p->url);
 178   free (p->repository);
 179
 180   free (p);
 181 }
 182
 183 opkg_t *
 184 opkg_new ()
 185 {
 186   opkg_t *opkg;
 187   opkg = malloc (sizeof (opkg_t));
 188
 189   opkg->args = malloc (sizeof (args_t));
 190   args_init (opkg->args);
 191
 192   opkg->conf = malloc (sizeof (opkg_conf_t));
 193   opkg_conf_init (opkg->conf, opkg->args);
 194
 195   opkg_init_options_array (opkg->conf, &opkg->options);
 196   return opkg;
 197 }
 198
 199 void
 200 opkg_free (opkg_t *opkg)
 201 {
 202   opkg_assert (opkg != NULL);
 203
 204   opkg_conf_deinit (opkg->conf);
 205   args_deinit (opkg->args);
 206   free (opkg->options);
 207   free (opkg->args);
 208   free (opkg->conf);
 209   free (opkg);
 210 }
 211
 212 int
 213 opkg_re_read_config_files (opkg_t *opkg)
 214 {
 215   args_t *a;
 216   opkg_conf_t *c;
 217
 218   opkg_assert (opkg != NULL);
 219
 220   a = opkg->args;
 221   c = opkg->conf;
 222
 223   /* Unfortunatly, the easiest way to re-read the config files right now is to
 224    * throw away opkg->conf and start again */
 225
 226   /* copy the settings we need to keep */
 227   a->autoremove = c->autoremove;
 228   a->force_depends = c->force_depends;
 229   a->force_defaults = c->force_defaults;
 230   a->force_overwrite = c->force_overwrite;
 231   a->force_downgrade = c->force_downgrade;
 232   a->force_reinstall = c->force_reinstall;
 233   a->force_removal_of_dependent_packages = c->force_removal_of_dependent_packages;
 234   a->force_removal_of_essential_packages = c->force_removal_of_essential_packages;
 235   a->nodeps = c->nodeps;
 236   a->noaction = c->noaction;
 237   a->query_all = c->query_all;
 238   a->verbosity = c->verbosity;
 239
 240   if (c->offline_root)
 241   {
 242     if (a->offline_root) free (a->offline_root);
 243     a->offline_root = strdup (c->offline_root);
 244   }
 245
 246   if (c->offline_root_pre_script_cmd)
 247   {
 248     if (a->offline_root_pre_script_cmd) free (a->offline_root_pre_script_cmd);
 249     a->offline_root_pre_script_cmd = strdup (c->offline_root_pre_script_cmd);
 250   }
 251
 252   if (c->offline_root_post_script_cmd)
 253   {
 254     if (a->offline_root_post_script_cmd) free (a->offline_root_post_script_cmd);
 255     a->offline_root_post_script_cmd = strdup (c->offline_root_post_script_cmd);
 256   }
 257
 258   /* throw away old opkg_conf and start again */
 259   opkg_conf_deinit (opkg->conf);
 260   opkg_conf_init (opkg->conf, opkg->args);
 261
 262   free (opkg->options);
 263   opkg_init_options_array (opkg->conf, &opkg->options);
 264
 265   return 0;
 266 }
 267
 268 void
 269 opkg_get_option (opkg_t *opkg, char *option, void **value)
 270 {
 271   int i = 0;
 272   opkg_option_t *options;
 273
 274   opkg_assert (opkg != NULL);
 275   opkg_assert (option != NULL);
 276   opkg_assert (value != NULL);
 277
 278   options = opkg->options;
 279
 280   /* look up the option
 281    * TODO: this would be much better as a hash table
 282    */
 283   while (options[i].name)
 284   {
 285     if (strcmp (options[i].name, option) != 0)
 286     {
 287       i++;
 288       continue;
 289     }
 290   }
 291
 292   /* get the option */
 293   switch (options[i].type)
 294   {
 295   case OPKG_OPT_TYPE_BOOL:
 296     *((int *) value) = *((int *) options[i].value);
 297     return;
 298
 299   case OPKG_OPT_TYPE_INT:
 300     *((int *) value) = *((int *) options[i].value);
 301     return;
 302
 303   case OPKG_OPT_TYPE_STRING:
 304     *((char **)value) = strdup (options[i].value);
 305     return;
 306   }
 307
 308 }
 309
 310 void
 311 opkg_set_option (opkg_t *opkg, char *option, void *value)
 312 {
 313   int i = 0, found = 0;
 314   opkg_option_t *options;
 315
 316   opkg_assert (opkg != NULL);
 317   opkg_assert (option != NULL);
 318   opkg_assert (value != NULL);
 319
 320   options = opkg->options;
 321
 322   /* look up the option
 323    * TODO: this would be much better as a hash table
 324    */
 325   while (options[i].name)
 326   {
 327     if (strcmp (options[i].name, option) == 0)
 328     {
 329       found = 1;
 330       break;
 331     }
 332     i++;
 333   }
 334
 335   if (!found)
 336   {
 337     /* XXX: Warning: Option not found */
 338     return;
 339   }
 340
 341   /* set the option */
 342   switch (options[i].type)
 343   {
 344   case OPKG_OPT_TYPE_BOOL:
 345     if (*((int *) value) == 0)
 346       *((int *)options[i].value) = 0;
 347     else
 348       *((int *)options[i].value) = 1;
 349     return;
 350
 351   case OPKG_OPT_TYPE_INT:
 352     *((int *) options[i].value) = *((int *) value);
 353     return;
 354
 355   case OPKG_OPT_TYPE_STRING:
 356     *((char **)options[i].value) = strdup (value);
 357     return;
 358   }
 359
 360 }
 361
 362 int
 363 opkg_install_package (opkg_t *opkg, const char *package_name, opkg_progress_callback_t progress_callback, void *user_data)
 364 {
 365   int err;
 366   char *stripped_filename;
 367   opkg_progress_data_t pdata;
 368   pkg_t *old, *new;
 369   pkg_vec_t *deps, *all;
 370   int i, ndepends;
 371   char **unresolved = NULL;
 372
 373   opkg_assert (opkg != NULL);
 374   opkg_assert (package_name != NULL);
 375
 376   /* ... */
 377   pkg_info_preinstall_check (opkg->conf);
 378
 379
 380   /* check to ensure package is not already installed */
 381   old = pkg_hash_fetch_installed_by_name(&opkg->conf->pkg_hash, package_name);
 382   if (old)
 383   {
 384     /* XXX: Error: Package is already installed. */
 385     return OPKG_PACKAGE_ALREADY_INSTALLED;
 386   }
 387
 388   new = pkg_hash_fetch_best_installation_candidate_by_name(opkg->conf, package_name);
 389   if (!new)
 390   {
 391     /* XXX: Error: Could not find package to install */
 392     return OPKG_PACKAGE_NOT_FOUND;
 393   }
 394
 395   new->state_flag |= SF_USER;
 396
 397   pdata.action = OPKG_INSTALL;
 398   pdata.package = old_pkg_to_new (new);
 399
 400   progress (pdata, 0);
 401
 402   /* find dependancies and download them */
 403   deps = pkg_vec_alloc ();
 404   /* this function does not return the original package, so we insert it later */
 405   ndepends = pkg_hash_fetch_unsatisfied_dependencies (opkg->conf, new, deps, &unresolved);
 406   if (unresolved)
 407   {
 408     /* XXX: Error: Could not satisfy dependencies */
 409     pkg_vec_free (deps);
 410     return OPKG_DEPENDENCIES_FAILED;
 411   }
 412
 413   /* insert the package we are installing so that we download it */
 414   pkg_vec_insert (deps, new);
 415
 416   /* download package and dependancies */
 417   for (i = 0; i < deps->len; i++)
 418   {
 419     pkg_t *pkg;
 420     struct _curl_cb_data cb_data;
 421     char *url;
 422
 423     pkg = deps->pkgs[i];
 424     if (pkg->local_filename)
 425       continue;
 426
 427     opkg_package_free (pdata.package);
 428     pdata.package = old_pkg_to_new (pkg);
 429     pdata.action = OPKG_DOWNLOAD;
 430
 431     if (pkg->src == NULL)
 432     {
 433       /* XXX: Error: Package not available from any configured src */
 434       return OPKG_PACKAGE_NOT_AVAILABLE;
 435     }
 436
 437     sprintf_alloc(&url, "%s/%s", pkg->src->value, pkg->filename);
 438
 439     /* Get the filename part, without any directory */
 440     stripped_filename = strrchr(pkg->filename, '/');
 441     if ( ! stripped_filename )
 442         stripped_filename = pkg->filename;
 443
 444     sprintf_alloc(&pkg->local_filename, "%s/%s", opkg->conf->tmp_dir, stripped_filename);
 445
 446     cb_data.cb = progress_callback;
 447     cb_data.progress_data = &pdata;
 448     cb_data.opkg = opkg;
 449     cb_data.user_data = user_data;
 450     /* 75% of "install" progress is for downloading */
 451     cb_data.start_range = 75 * i / deps->len;
 452     cb_data.finish_range = 75 * (i + 1) / deps->len;
 453
 454     err = opkg_download(opkg->conf, url, pkg->local_filename,
 455               (curl_progress_func) curl_progress_cb, &cb_data);
 456     free(url);
 457
 458     if (err)
 459     {
 460       pkg_vec_free (deps);
 461       opkg_package_free (pdata.package);
 462       return OPKG_DOWNLOAD_FAILED;
 463     }
 464
 465   }
 466   pkg_vec_free (deps);
 467
 468   /* clear depenacy checked marks, left by pkg_hash_fetch_unsatisfied_dependencies */
 469   all = pkg_vec_alloc ();
 470   pkg_hash_fetch_available (&opkg->conf->pkg_hash, all);
 471   for (i = 0; i < all->len; i++)
 472   {
 473     all->pkgs[i]->parent->dependencies_checked = 0;
 474   }
 475   pkg_vec_free (all);
 476
 477
 478   /* 75% of "install" progress is for downloading */
 479   opkg_package_free (pdata.package);
 480   pdata.package = old_pkg_to_new (new);
 481   pdata.action = OPKG_INSTALL;
 482   progress (pdata, 75);
 483
 484   /* unpack the package */
 485   err = opkg_install_pkg(opkg->conf, new, 0);
 486
 487   if (err)
 488   {
 489     opkg_package_free (pdata.package);
 490     switch (err)
 491     {
 492       case PKG_INSTALL_ERR_NOT_TRUSTED: return OPKG_GPG_ERROR;
 493       case PKG_INSTALL_ERR_DOWNLOAD: return OPKG_DOWNLOAD_FAILED;
 494       case PKG_INSTALL_ERR_DEPENDENCIES:
 495       case PKG_INSTALL_ERR_CONFLICTS: return OPKG_DEPENDENCIES_FAILED;
 496       case PKG_INSTALL_ERR_ALREADY_INSTALLED: return OPKG_PACKAGE_ALREADY_INSTALLED;
 497       case PKG_INSTALL_ERR_SIGNATURE: return OPKG_GPG_ERROR;
 498       case PKG_INSTALL_ERR_MD5: return OPKG_MD5_ERROR;
 499       default: return OPKG_UNKNOWN_ERROR;
 500     }
 501   }
 502
 503   progress (pdata, 75);
 504
 505   /* run configure scripts, etc. */
 506   err = opkg_configure_packages (opkg->conf, NULL);
 507   if (err)
 508   {
 509     opkg_package_free (pdata.package);
 510     return OPKG_UNKNOWN_ERROR;
 511   }
 512
 513   /* write out status files and file lists */
 514   opkg_conf_write_status_files (opkg->conf);
 515   pkg_write_changed_filelists (opkg->conf);
 516
 517   progress (pdata, 100);
 518   opkg_package_free (pdata.package);
 519   return 0;
 520 }
 521
 522 int
 523 opkg_remove_package (opkg_t *opkg, const char *package_name, opkg_progress_callback_t progress_callback, void *user_data)
 524 {
 525   int err;
 526   pkg_t *pkg = NULL;
 527   pkg_t *pkg_to_remove;
 528   opkg_progress_data_t pdata;
 529
 530   opkg_assert (opkg != NULL);
 531   opkg_assert (package_name != NULL);
 532
 533   pkg_info_preinstall_check (opkg->conf);
 534
 535   pkg = pkg_hash_fetch_installed_by_name (&opkg->conf->pkg_hash, package_name);
 536
 537   if (pkg == NULL)
 538   {
 539     /* XXX: Error: Package not installed. */
 540     return OPKG_PACKAGE_NOT_INSTALLED;
 541   }
 542
 543   pdata.action = OPKG_REMOVE;
 544   pdata.package = old_pkg_to_new (pkg);
 545   progress (pdata, 0);
 546
 547
 548   if (pkg->state_status == SS_NOT_INSTALLED)
 549   {
 550     /* XXX:  Error: Package seems to be not installed (STATUS = NOT_INSTALLED). */
 551     return OPKG_PACKAGE_NOT_INSTALLED;
 552   }
 553   progress (pdata, 25);
 554
 555   if (opkg->conf->restrict_to_default_dest)
 556   {
 557     pkg_to_remove = pkg_hash_fetch_installed_by_name_dest (&opkg->conf->pkg_hash,
 558                                                            pkg->name,
 559                                                            opkg->conf->default_dest);
 560   }
 561   else
 562   {
 563     pkg_to_remove = pkg_hash_fetch_installed_by_name (&opkg->conf->pkg_hash, pkg->name );
 564   }
 565
 566
 567   progress (pdata, 75);
 568
 569   err = opkg_remove_pkg (opkg->conf, pkg_to_remove, 0);
 570
 571   /* write out status files and file lists */
 572   opkg_conf_write_status_files (opkg->conf);
 573   pkg_write_changed_filelists (opkg->conf);
 574
 575
 576   progress (pdata, 100);
 577   opkg_package_free (pdata.package);
 578   return (err) ? OPKG_UNKNOWN_ERROR : OPKG_NO_ERROR;
 579 }
 580
 581 int
 582 opkg_upgrade_package (opkg_t *opkg, const char *package_name, opkg_progress_callback_t progress_callback, void *user_data)
 583 {
 584   int err;
 585   pkg_t *pkg;
 586   opkg_progress_data_t pdata;
 587
 588
 589
 590   opkg_assert (opkg != NULL);
 591   opkg_assert (package_name != NULL);
 592
 593   pkg_info_preinstall_check (opkg->conf);
 594
 595   if (opkg->conf->restrict_to_default_dest)
 596   {
 597     pkg = pkg_hash_fetch_installed_by_name_dest (&opkg->conf->pkg_hash,
 598                                                  package_name,
 599                                                  opkg->conf->default_dest);
 600     if (pkg == NULL)
 601     {
 602       /* XXX: Error: Package not installed in default_dest */
 603       return OPKG_PACKAGE_NOT_INSTALLED;
 604     }
 605   }
 606   else
 607   {
 608     pkg = pkg_hash_fetch_installed_by_name (&opkg->conf->pkg_hash,
 609                                             package_name);
 610   }
 611
 612   if (!pkg)
 613   {
 614     /* XXX: Error: Package not installed */
 615     return OPKG_PACKAGE_NOT_INSTALLED;
 616   }
 617
 618   pdata.action = OPKG_INSTALL;
 619   pdata.package = old_pkg_to_new (pkg);
 620   progress (pdata, 0);
 621
 622   err = opkg_upgrade_pkg (opkg->conf, pkg);
 623   if (err)
 624     return OPKG_UNKNOWN_ERROR;
 625   progress (pdata, 75);
 626
 627   err = opkg_configure_packages (opkg->conf, NULL);
 628   if (err)
 629     return OPKG_UNKNOWN_ERROR;
 630   progress (pdata, 100);
 631   opkg_package_free (pdata.package);
 632   return 0;
 633 }
 634
 635 int
 636 opkg_upgrade_all (opkg_t *opkg, opkg_progress_callback_t progress_callback, void *user_data)
 637 {
 638   pkg_vec_t *installed;
 639   int err = 0;
 640   int i;
 641   pkg_t *pkg;
 642   opkg_progress_data_t pdata;
 643
 644   pdata.action = OPKG_INSTALL;
 645   pdata.package = NULL;
 646
 647   opkg_assert (opkg != NULL);
 648   progress (pdata, 0);
 649
 650   installed = pkg_vec_alloc ();
 651   pkg_info_preinstall_check (opkg->conf);
 652
 653   pkg_hash_fetch_all_installed (&opkg->conf->pkg_hash, installed);
 654   for (i = 0; i < installed->len; i++)
 655   {
 656     pkg = installed->pkgs[i];
 657
 658     pdata.package = old_pkg_to_new (pkg);
 659     progress (pdata, 99 * i / installed->len);
 660     opkg_package_free (pdata.package);
 661
 662     err += opkg_upgrade_pkg (opkg->conf, pkg);
 663   }
 664   pkg_vec_free (installed);
 665
 666   if (err)
 667     return 1;
 668
 669   err = opkg_configure_packages (opkg->conf, NULL);
 670   if (err)
 671     return 1;
 672
 673   pdata.package = NULL;
 674   progress (pdata, 100);
 675   return 0;
 676 }
 677
 678 int
 679 opkg_update_package_lists (opkg_t *opkg, opkg_progress_callback_t progress_callback, void *user_data)
 680 {
 681   char *tmp;
 682   int err, result = 0;
 683   char *lists_dir;
 684   pkg_src_list_elt_t *iter;
 685   pkg_src_t *src;
 686   int sources_list_count, sources_done;
 687   opkg_progress_data_t pdata;
 688
 689   opkg_assert (opkg != NULL);
 690
 691   pdata.action = OPKG_DOWNLOAD;
 692   pdata.package = NULL;
 693   progress (pdata, 0);
 694
 695   sprintf_alloc (&lists_dir, "%s",
 696                  (opkg->conf->restrict_to_default_dest)
 697                  ? opkg->conf->default_dest->lists_dir
 698                  : opkg->conf->lists_dir);
 699
 700   if (!file_is_dir (lists_dir))
 701   {
 702     if (file_exists (lists_dir))
 703     {
 704       /* XXX: Error: file exists but is not a directory */
 705       free (lists_dir);
 706       return 1;
 707     }
 708
 709     err = file_mkdir_hier (lists_dir, 0755);
 710     if (err)
 711     {
 712       /* XXX: Error: failed to create directory */
 713       free (lists_dir);
 714       return 1;
 715     }
 716   }
 717
 718   tmp = strdup ("/tmp/opkg.XXXXXX");
 719
 720   if (mkdtemp (tmp) == NULL)
 721   {
 722     /* XXX: Error: could not create temporary file name */
 723     free (lists_dir);
 724     free (tmp);
 725     return 1;
 726   }
 727
 728   /* count the number of sources so we can give some progress updates */
 729   sources_list_count = 0;
 730   sources_done = 0;
 731   iter = opkg->conf->pkg_src_list.head;
 732   while (iter)
 733   {
 734     sources_list_count++;
 735     iter = iter->next;
 736   }
 737
 738   for (iter = opkg->conf->pkg_src_list.head; iter; iter = iter->next)
 739   {
 740     char *url, *list_file_name = NULL, *sig_file_name = NULL;
 741
 742     src = iter->data;
 743
 744     if (src->extra_data)  /* debian style? */
 745       sprintf_alloc (&url, "%s/%s/%s", src->value, src->extra_data,
 746                      src->gzip ? "Packages.gz" : "Packages");
 747     else
 748       sprintf_alloc (&url, "%s/%s", src->value, src->gzip ? "Packages.gz" : "Packages");
 749
 750     sprintf_alloc (&list_file_name, "%s/%s", lists_dir, src->name);
 751     if (src->gzip)
 752     {
 753       FILE *in, *out;
 754       struct _curl_cb_data cb_data;
 755       char *tmp_file_name = NULL;
 756
 757       sprintf_alloc (&tmp_file_name, "%s/%s.gz", tmp, src->name);
 758
 759       /* XXX: Note: downloading url */
 760
 761       cb_data.cb = progress_callback;
 762       cb_data.progress_data = &pdata;
 763       cb_data.opkg = opkg;
 764       cb_data.user_data = user_data;
 765       cb_data.start_range = 100 * sources_done / sources_list_count;
 766       cb_data.finish_range = 100 * (sources_done + 1) / sources_list_count;
 767
 768       err = opkg_download (opkg->conf, url, tmp_file_name, (curl_progress_func) curl_progress_cb, &cb_data);
 769
 770       if (err == 0)
 771       {
 772         /* XXX: Note: Inflating downloaded file */
 773         in = fopen (tmp_file_name, "r");
 774         out = fopen (list_file_name, "w");
 775         if (in && out)
 776           unzip (in, out);
 777         else
 778           err = 1;
 779         if (in)
 780           fclose (in);
 781         if (out)
 782           fclose (out);
 783         unlink (tmp_file_name);
 784       }
 785       free (tmp_file_name);
 786     }
 787     else
 788       err = opkg_download (opkg->conf, url, list_file_name, NULL, NULL);
 789
 790     if (err)
 791     {
 792       /* XXX: Error: download error */
 793       result = OPKG_DOWNLOAD_FAILED;
 794     }
 795     free (url);
 796
 797 #ifdef HAVE_GPGME
 798     /* download detached signitures to verify the package lists */
 799     /* get the url for the sig file */
 800     if (src->extra_data)  /* debian style? */
 801       sprintf_alloc (&url, "%s/%s/%s", src->value, src->extra_data,
 802                      "Packages.sig");
 803     else
 804       sprintf_alloc (&url, "%s/%s", src->value, "Packages.sig");
 805
 806     /* create filename for signature */
 807     sprintf_alloc (&sig_file_name, "%s/%s.sig", lists_dir, src->name);
 808
 809     /* make sure there is no existing signature file */
 810     unlink (sig_file_name);
 811
 812     err = opkg_download (opkg->conf, url, sig_file_name, NULL, NULL);
 813     if (err)
 814     {
 815       /* XXX: Warning: Download failed */
 816     }
 817     else
 818     {
 819       int err;
 820       err = opkg_verify_file (opkg->conf, list_file_name, sig_file_name);
 821       if (err == 0)
 822       {
 823         /* XXX: Notice: Signature check passed */
 824       }
 825       else
 826       {
 827         /* XXX: Warning: Signature check failed */
 828       }
 829     }
 830     free (sig_file_name);
 831     free (list_file_name);
 832     free (url);
 833 #else
 834     /* XXX: Note: Signiture check for %s skipped because GPG support was not
 835      * enabled in this build
 836      */
 837 #endif
 838
 839     sources_done++;
 840     progress (pdata, 100 * sources_done / sources_list_count);
 841   }
 842
 843   rmdir (tmp);
 844   free (tmp);
 845   free (lists_dir);
 846
 847   /* Now re-read the package lists to update package hash tables. */
 848   opkg_re_read_config_files (opkg);
 849
 850   return result;
 851 }
 852
 853
 854 int
 855 opkg_list_packages (opkg_t *opkg, opkg_package_callback_t callback, void *user_data)
 856 {
 857   pkg_vec_t *all;
 858   int i;
 859
 860   opkg_assert (opkg);
 861   opkg_assert (callback);
 862
 863   all = pkg_vec_alloc ();
 864   pkg_hash_fetch_available (&opkg->conf->pkg_hash, all);
 865   for (i = 0; i < all->len; i++)
 866   {
 867     pkg_t *pkg;
 868     opkg_package_t *package;
 869
 870     pkg = all->pkgs[i];
 871
 872     package = old_pkg_to_new (pkg);
 873     callback (opkg, package, user_data);
 874   }
 875
 876   pkg_vec_free (all);
 877
 878   return 0;
 879 }
 880
 881 int
 882 opkg_list_upgradable_packages (opkg_t *opkg, opkg_package_callback_t callback, void *user_data)
 883 {
 884   pkg_vec_t *all;
 885   int i;
 886
 887   opkg_assert (opkg);
 888   opkg_assert (callback);
 889
 890   all = pkg_vec_alloc ();
 891   pkg_hash_fetch_available (&opkg->conf->pkg_hash, all);
 892   for (i = 0; i < all->len; i++)
 893   {
 894     pkg_t *old, *new;
 895     int cmp;
 896     opkg_package_t *package;
 897
 898     old = all->pkgs[i];
 899
 900     if (old->state_status != SS_INSTALLED)
 901       continue;
 902
 903     new = pkg_hash_fetch_best_installation_candidate_by_name(opkg->conf, old->name);
 904     if (new == NULL) {
 905       /* XXX: Notice: Assuming locally install package is up to date */
 906       continue;
 907     }
 908
 909     cmp = pkg_compare_versions(old, new);
 910
 911     if (cmp < 0)
 912     {
 913       package = old_pkg_to_new (new);
 914       callback (opkg, package, user_data);
 915     }
 916   }
 917
 918   pkg_vec_free (all);
 919
 920   return 0;
 921 }
 922
 923 opkg_package_t*
 924 opkg_find_package (opkg_t *opkg, const char *name, const char *ver, const char *arch, const char *repo)
 925 {
 926   pkg_vec_t *all;
 927   opkg_package_t *package = NULL;
 928   int i;
 929 #define sstrcmp(x,y) (x && y) ? strcmp (x, y) : 0
 930
 931   opkg_assert (opkg);
 932
 933   all = pkg_vec_alloc ();
 934   pkg_hash_fetch_available (&opkg->conf->pkg_hash, all);
 935   for (i = 0; i < all->len; i++)
 936   {
 937     pkg_t *pkg;
 938     char *pkgv;
 939
 940     pkg = all->pkgs[i];
 941
 942     /* check name */
 943     if (sstrcmp (pkg->name, name))
 944       continue;
 945
 946     /* check version */
 947     pkgv = pkg_version_str_alloc (pkg);
 948     if (sstrcmp (pkgv, ver))
 949     {
 950       free (pkgv);
 951       continue;
 952     }
 953     free (pkgv);
 954
 955     /* check architecture */
 956     if (arch)
 957     {
 958       if (sstrcmp (pkg->architecture, arch))
 959         continue;
 960     }
 961
 962     /* check repository */
 963     if (repo)
 964     {
 965       if (sstrcmp (pkg->src->name, repo))
 966           continue;
 967     }
 968
 969     /* match found */
 970     package = old_pkg_to_new (pkg);
 971     break;
 972   }
 973
 974   pkg_vec_free (all);
 975
 976   return package;
 977 }