libopkg/pkg_hash.c

   1 /* opkg_hash.c - the opkg package management system
   2
   3    Steven M. Ayer
   4
   5    Copyright (C) 2002 Compaq Computer Corporation
   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 <stdio.h>
  19
  20 #include "hash_table.h"
  21 #include "pkg.h"
  22 #include "opkg_message.h"
  23 #include "pkg_vec.h"
  24 #include "pkg_hash.h"
  25 #include "parse_util.h"
  26 #include "pkg_parse.h"
  27 #include "opkg_utils.h"
  28 #include "sprintf_alloc.h"
  29 #include "file_util.h"
  30 #include "libbb/libbb.h"
  31 #include "libbb/gzip.h"
  32
  33 void pkg_hash_init(void)
  34 {
  35         hash_table_init("pkg-hash", &conf->pkg_hash,
  36                         OPKG_CONF_DEFAULT_HASH_LEN);
  37 }
  38
  39 static void free_pkgs(const char *key, void *entry, void *data)
  40 {
  41         int i;
  42         abstract_pkg_t *ab_pkg;
  43
  44         /* Each entry in the hash table is an abstract package, which contains
  45          * a list of packages that provide the abstract package.
  46          */
  47
  48         ab_pkg = (abstract_pkg_t *) entry;
  49
  50         if (ab_pkg->pkgs) {
  51                 for (i = 0; i < ab_pkg->pkgs->len; i++) {
  52                         pkg_deinit(ab_pkg->pkgs->pkgs[i]);
  53                         free(ab_pkg->pkgs->pkgs[i]);
  54                 }
  55         }
  56
  57         abstract_pkg_vec_free(ab_pkg->provided_by);
  58         abstract_pkg_vec_free(ab_pkg->replaced_by);
  59         pkg_vec_free(ab_pkg->pkgs);
  60         free(ab_pkg->depended_upon_by);
  61         free(ab_pkg->name);
  62         free(ab_pkg);
  63 }
  64
  65 void pkg_hash_deinit(void)
  66 {
  67         hash_table_foreach(&conf->pkg_hash, free_pkgs, NULL);
  68         hash_table_deinit(&conf->pkg_hash);
  69 }
  70
  71 int dist_hash_add_from_file(const char *lists_dir, pkg_src_t * dist)
  72 {
  73         nv_pair_list_elt_t *l;
  74         char *list_file, *subname;
  75
  76         list_for_each_entry(l, &conf->arch_list.head, node) {
  77                 nv_pair_t *nv = (nv_pair_t *) l->data;
  78                 sprintf_alloc(&subname, "%s-%s", dist->name, nv->name);
  79                 sprintf_alloc(&list_file, "%s/%s", lists_dir, subname);
  80
  81                 if (file_exists(list_file)) {
  82                         if (pkg_hash_add_from_file(list_file, dist, NULL, 0, 0)) {
  83                                 free(list_file);
  84                                 return -1;
  85                         }
  86                         pkg_src_list_append(&conf->pkg_src_list, subname,
  87                                             dist->value, "__dummy__", 0);
  88                 }
  89
  90                 free(list_file);
  91         }
  92
  93         return 0;
  94 }
  95
  96 int
  97 pkg_hash_add_from_file(const char *file_name,
  98                        pkg_src_t * src, pkg_dest_t * dest, int is_status_file, int state_flags)
  99 {
 100         pkg_t *pkg;
 101         FILE *fp;
 102         char *buf;
 103         const size_t len = 4096;
 104         int ret = 0;
 105         struct gzip_handle zh;
 106
 107         if (src && src->gzip) {
 108                 fp = gzip_fdopen(&zh, file_name);
 109         } else {
 110                 fp = fopen(file_name, "r");
 111         }
 112
 113         if (fp == NULL) {
 114                 opkg_perror(ERROR, "Failed to open %s", file_name);
 115                 return -1;
 116         }
 117
 118         buf = xmalloc(len);
 119
 120         do {
 121                 pkg = pkg_new();
 122                 pkg->src = src;
 123                 pkg->dest = dest;
 124                 pkg->state_flag |= state_flags;
 125
 126                 ret = parse_from_stream_nomalloc(pkg_parse_line, pkg, fp, 0,
 127                                                  &buf, len);
 128
 129                 if (pkg->name == NULL) {
 130                         /* probably just a blank line */
 131                         ret = 1;
 132                 }
 133
 134                 if (ret) {
 135                         pkg_deinit(pkg);
 136                         free(pkg);
 137                         if (ret == -1)
 138                                 break;
 139                         if (ret == 1)
 140                                 /* Probably a blank line, continue parsing. */
 141                                 ret = 0;
 142                         continue;
 143                 }
 144
 145                 if (!(pkg->state_flag & SF_NEED_DETAIL)) {
 146                         //opkg_msg(DEBUG, "Package %s is unrelated, ignoring.\n", pkg->name);
 147                         pkg_deinit(pkg);
 148                         free(pkg);
 149                         continue;
 150                 }
 151
 152                 if (!pkg_get_architecture(pkg) || !pkg_get_arch_priority(pkg)) {
 153                         char *version_str = pkg_version_str_alloc(pkg);
 154                         opkg_msg(NOTICE, "Package %s version %s has no "
 155                                  "valid architecture, ignoring.\n",
 156                                  pkg->name, version_str);
 157                         free(version_str);
 158                         continue;
 159                 }
 160
 161                 hash_insert_pkg(pkg, is_status_file);
 162
 163         } while (!feof(fp));
 164
 165         free(buf);
 166         fclose(fp);
 167
 168         if (src && src->gzip)
 169                 gzip_close(&zh);
 170
 171         return ret;
 172 }
 173
 174 /*
 175  * Load in feed files from the cached "src" and/or "src/gz" locations.
 176  */
 177 int pkg_hash_load_feeds(int state_flags)
 178 {
 179         pkg_src_list_elt_t *iter;
 180         pkg_src_t *src;
 181         char *list_file, *lists_dir;
 182
 183         opkg_msg(INFO, "\n");
 184
 185         lists_dir = conf->restrict_to_default_dest ?
 186             conf->default_dest->lists_dir : conf->lists_dir;
 187
 188         for (iter = void_list_first(&conf->pkg_src_list); iter;
 189              iter = void_list_next(&conf->pkg_src_list, iter)) {
 190
 191                 src = (pkg_src_t *) iter->data;
 192
 193                 sprintf_alloc(&list_file, "%s/%s", lists_dir, src->name);
 194
 195                 if (file_exists(list_file)) {
 196                         if (pkg_hash_add_from_file(list_file, src, NULL, 0, state_flags)) {
 197                                 free(list_file);
 198                                 return -1;
 199                         }
 200                 }
 201                 free(list_file);
 202         }
 203
 204         return 0;
 205 }
 206
 207 /*
 208  * Load in status files from the configured "dest"s.
 209  */
 210 int pkg_hash_load_status_files(void)
 211 {
 212         pkg_dest_list_elt_t *iter;
 213         pkg_dest_t *dest;
 214
 215         opkg_msg(INFO, "\n");
 216
 217         for (iter = void_list_first(&conf->pkg_dest_list); iter;
 218              iter = void_list_next(&conf->pkg_dest_list, iter)) {
 219
 220                 dest = (pkg_dest_t *) iter->data;
 221
 222                 if (file_exists(dest->status_file_name)) {
 223                         if (pkg_hash_add_from_file
 224                             (dest->status_file_name, NULL, dest, 1, SF_NEED_DETAIL))
 225                                 return -1;
 226                 }
 227         }
 228
 229         return 0;
 230 }
 231
 232 static void
 233 pkg_hash_load_package_details_helper(const char *pkg_name, void *entry, void *data)
 234 {
 235         int *count = data;
 236         abstract_pkg_t *ab_pkg = (abstract_pkg_t *) entry;
 237
 238         if (ab_pkg->state_flag & SF_NEED_DETAIL) {
 239                 if (ab_pkg->state_flag & SF_MARKED) {
 240                         opkg_msg(DEBUG, "skipping already seen flagged abpkg %s\n",
 241                                  ab_pkg->name);
 242                         return;
 243                 }
 244
 245                 opkg_msg(DEBUG, "found yet incomplete flagged abpkg %s\n",
 246                          ab_pkg->name);
 247
 248                 (*count)++;
 249                 ab_pkg->state_flag |= SF_MARKED;
 250         }
 251 }
 252
 253 int pkg_hash_load_package_details(void)
 254 {
 255         int n_need_detail;
 256
 257         while (1) {
 258                 pkg_hash_load_feeds(0);
 259
 260                 n_need_detail = 0;
 261                 hash_table_foreach(&conf->pkg_hash, pkg_hash_load_package_details_helper, &n_need_detail);
 262
 263                 if (n_need_detail > 0)
 264                         opkg_msg(DEBUG, "Found %d packages requiring details, reloading feeds\n", n_need_detail);
 265                 else
 266                         break;
 267         }
 268
 269         return 0;
 270 }
 271
 272 pkg_t *pkg_hash_fetch_best_installation_candidate(abstract_pkg_t * apkg,
 273                                                   int (*constraint_fcn) (pkg_t *
 274                                                                          pkg,
 275                                                                          void
 276                                                                          *cdata),
 277                                                   void *cdata, int quiet)
 278 {
 279         int i, j;
 280         int nprovides = 0;
 281         int nmatching = 0;
 282         int wrong_arch_found = 0;
 283         int arch_priority;
 284         pkg_vec_t *matching_pkgs;
 285         abstract_pkg_vec_t *matching_apkgs;
 286         abstract_pkg_vec_t *provided_apkg_vec;
 287         abstract_pkg_t **provided_apkgs;
 288         abstract_pkg_vec_t *providers;
 289         pkg_t *latest_installed_parent = NULL;
 290         pkg_t *latest_matching = NULL;
 291         pkg_t *priorized_matching = NULL;
 292         pkg_t *held_pkg = NULL;
 293         pkg_t *good_pkg_by_name = NULL;
 294
 295         if (apkg == NULL || apkg->provided_by == NULL
 296             || (apkg->provided_by->len == 0))
 297                 return NULL;
 298
 299         matching_pkgs = pkg_vec_alloc();
 300         matching_apkgs = abstract_pkg_vec_alloc();
 301         providers = abstract_pkg_vec_alloc();
 302
 303         opkg_msg(DEBUG, "Best installation candidate for %s:\n", apkg->name);
 304
 305         provided_apkg_vec = apkg->provided_by;
 306         nprovides = provided_apkg_vec->len;
 307         provided_apkgs = provided_apkg_vec->pkgs;
 308         if (nprovides > 1)
 309                 opkg_msg(DEBUG, "apkg=%s nprovides=%d.\n", apkg->name,
 310                          nprovides);
 311
 312         /* accumulate all the providers */
 313         for (i = 0; i < nprovides; i++) {
 314                 abstract_pkg_t *provider_apkg = provided_apkgs[i];
 315                 opkg_msg(DEBUG, "Adding %s to providers.\n",
 316                          provider_apkg->name);
 317                 abstract_pkg_vec_insert(providers, provider_apkg);
 318         }
 319         nprovides = providers->len;
 320
 321         for (i = 0; i < nprovides; i++) {
 322                 abstract_pkg_t *provider_apkg =
 323                     abstract_pkg_vec_get(providers, i);
 324                 abstract_pkg_t *replacement_apkg = NULL;
 325                 pkg_vec_t *vec;
 326
 327                 if (provider_apkg->replaced_by
 328                     && provider_apkg->replaced_by->len) {
 329                         replacement_apkg = provider_apkg->replaced_by->pkgs[0];
 330                         if (provider_apkg->replaced_by->len > 1) {
 331                                 opkg_msg(NOTICE, "Multiple replacers for %s, "
 332                                          "using first one (%s).\n",
 333                                          provider_apkg->name,
 334                                          replacement_apkg->name);
 335                         }
 336                 }
 337
 338                 if (replacement_apkg)
 339                         opkg_msg(DEBUG,
 340                                  "replacement_apkg=%s for provider_apkg=%s.\n",
 341                                  replacement_apkg->name, provider_apkg->name);
 342
 343                 if (replacement_apkg && (replacement_apkg != provider_apkg)) {
 344                         if (abstract_pkg_vec_contains
 345                             (providers, replacement_apkg))
 346                                 continue;
 347                         else
 348                                 provider_apkg = replacement_apkg;
 349                 }
 350
 351                 if (!(vec = provider_apkg->pkgs)) {
 352                         opkg_msg(DEBUG, "No pkgs for provider_apkg %s.\n",
 353                                  provider_apkg->name);
 354                         continue;
 355                 }
 356
 357                 /* now check for supported architecture */
 358                 {
 359                         int max_count = 0;
 360
 361                         /* count packages matching max arch priority and keep track of last one */
 362                         for (j = 0; j < vec->len; j++) {
 363                                 pkg_t *maybe = vec->pkgs[j];
 364                                 arch_priority = pkg_get_arch_priority(maybe);
 365
 366                                 opkg_msg(DEBUG,
 367                                          "%s arch=%s arch_priority=%d version=%s.\n",
 368                                          maybe->name, pkg_get_architecture(maybe),
 369                                          arch_priority, pkg_get_string(maybe, PKG_VERSION));
 370                                 /* We make sure not to add the same package twice. Need to search for the reason why
 371                                    they show up twice sometimes. */
 372                                 if ((arch_priority > 0)
 373                                     &&
 374                                     (!pkg_vec_contains(matching_pkgs, maybe))) {
 375                                         max_count++;
 376                                         abstract_pkg_vec_insert(matching_apkgs,
 377                                                                 maybe->parent);
 378                                         pkg_vec_insert(matching_pkgs, maybe);
 379                                 }
 380                         }
 381
 382                         if (vec->len > 0 && matching_pkgs->len < 1)
 383                                 wrong_arch_found = 1;
 384                 }
 385         }
 386
 387         if (matching_pkgs->len < 1) {
 388                 if (wrong_arch_found)
 389                         opkg_msg(ERROR, "Packages for %s found, but"
 390                                  " incompatible with the architectures configured\n",
 391                                  apkg->name);
 392                 pkg_vec_free(matching_pkgs);
 393                 abstract_pkg_vec_free(matching_apkgs);
 394                 abstract_pkg_vec_free(providers);
 395                 return NULL;
 396         }
 397
 398         if (matching_pkgs->len > 1)
 399                 pkg_vec_sort(matching_pkgs,
 400                              pkg_name_version_and_architecture_compare);
 401         if (matching_apkgs->len > 1)
 402                 abstract_pkg_vec_sort(matching_apkgs, abstract_pkg_name_compare);
 403
 404         for (i = 0; i < matching_pkgs->len; i++) {
 405                 pkg_t *matching = matching_pkgs->pkgs[i];
 406                 if (constraint_fcn(matching, cdata)) {
 407                         opkg_msg(DEBUG, "Candidate: %s %s.\n",
 408                                  matching->name, pkg_get_string(matching, PKG_VERSION));
 409                         good_pkg_by_name = matching;
 410                         /* It has been provided by hand, so it is what user want */
 411                         if (matching->provided_by_hand == 1)
 412                                 break;
 413                 }
 414         }
 415
 416         for (i = 0; i < matching_pkgs->len; i++) {
 417                 pkg_t *matching = matching_pkgs->pkgs[i];
 418                 latest_matching = matching;
 419                 if (matching->parent->state_status == SS_INSTALLED
 420                     || matching->parent->state_status == SS_UNPACKED)
 421                         latest_installed_parent = matching;
 422                 if (matching->state_flag & (SF_HOLD | SF_PREFER)) {
 423                         if (held_pkg)
 424                                 opkg_msg(NOTICE,
 425                                          "Multiple packages (%s and %s) providing"
 426                                          " same name marked HOLD or PREFER. "
 427                                          "Using latest.\n", held_pkg->name,
 428                                          matching->name);
 429                         held_pkg = matching;
 430                 }
 431         }
 432
 433         if (!good_pkg_by_name && !held_pkg && !latest_installed_parent
 434             && matching_apkgs->len > 1 && !quiet) {
 435                 int prio = 0;
 436                 for (i = 0; i < matching_pkgs->len; i++) {
 437                         pkg_t *matching = matching_pkgs->pkgs[i];
 438                         arch_priority = pkg_get_arch_priority(matching);
 439                         if (arch_priority > prio) {
 440                                 priorized_matching = matching;
 441                                 prio = arch_priority;
 442                                 opkg_msg(DEBUG, "Match %s with priority %i.\n",
 443                                          matching->name, prio);
 444                         }
 445                 }
 446
 447         }
 448
 449         if (conf->verbosity >= INFO && matching_apkgs->len > 1) {
 450                 opkg_msg(INFO, "%d matching pkgs for apkg=%s:\n",
 451                          matching_pkgs->len, apkg->name);
 452                 for (i = 0; i < matching_pkgs->len; i++) {
 453                         pkg_t *matching = matching_pkgs->pkgs[i];
 454                         opkg_msg(INFO, "%s %s %s\n",
 455                                  matching->name, pkg_get_string(matching, PKG_VERSION),
 456                                  pkg_get_architecture(matching));
 457                 }
 458         }
 459
 460         nmatching = matching_apkgs->len;
 461
 462         pkg_vec_free(matching_pkgs);
 463         abstract_pkg_vec_free(matching_apkgs);
 464         abstract_pkg_vec_free(providers);
 465
 466         if (good_pkg_by_name) { /* We found a good candidate, we will install it */
 467                 return good_pkg_by_name;
 468         }
 469         if (held_pkg) {
 470                 opkg_msg(INFO, "Using held package %s.\n", held_pkg->name);
 471                 return held_pkg;
 472         }
 473         if (latest_installed_parent) {
 474                 opkg_msg(INFO,
 475                          "Using latest version of installed package %s.\n",
 476                          latest_installed_parent->name);
 477                 return latest_installed_parent;
 478         }
 479         if (priorized_matching) {
 480                 opkg_msg(INFO, "Using priorized matching %s %s %s.\n",
 481                          priorized_matching->name, pkg_get_string(priorized_matching, PKG_VERSION),
 482                          pkg_get_architecture(priorized_matching));
 483                 return priorized_matching;
 484         }
 485         if (nmatching > 1) {
 486                 opkg_msg(INFO, "No matching pkg out of %d matching_apkgs.\n",
 487                          nmatching);
 488                 return NULL;
 489         }
 490         if (latest_matching) {
 491                 opkg_msg(INFO, "Using latest matching %s %s %s.\n",
 492                          latest_matching->name, pkg_get_string(latest_matching, PKG_VERSION),
 493                          pkg_get_architecture(latest_matching));
 494                 return latest_matching;
 495         }
 496         return NULL;
 497 }
 498
 499 static int pkg_name_constraint_fcn(pkg_t * pkg, void *cdata)
 500 {
 501         const char *name = (const char *)cdata;
 502
 503         if (strcmp(pkg->name, name) == 0)
 504                 return 1;
 505         else
 506                 return 0;
 507 }
 508
 509 static pkg_vec_t *pkg_vec_fetch_by_name(const char *pkg_name)
 510 {
 511         abstract_pkg_t *ab_pkg;
 512
 513         if (!(ab_pkg = abstract_pkg_fetch_by_name(pkg_name)))
 514                 return NULL;
 515
 516         if (ab_pkg->pkgs)
 517                 return ab_pkg->pkgs;
 518
 519         if (ab_pkg->provided_by) {
 520                 abstract_pkg_t *abpkg =
 521                     abstract_pkg_vec_get(ab_pkg->provided_by, 0);
 522                 if (abpkg != NULL)
 523                         return abpkg->pkgs;
 524                 else
 525                         return ab_pkg->pkgs;
 526         }
 527
 528         return NULL;
 529 }
 530
 531 pkg_t *pkg_hash_fetch_best_installation_candidate_by_name(const char *name)
 532 {
 533         abstract_pkg_t *apkg = NULL;
 534
 535         if (!(apkg = abstract_pkg_fetch_by_name(name)))
 536                 return NULL;
 537
 538         return pkg_hash_fetch_best_installation_candidate(apkg,
 539                                                           pkg_name_constraint_fcn,
 540                                                           apkg->name, 0);
 541 }
 542
 543 pkg_t *pkg_hash_fetch_by_name_version(const char *pkg_name, const char *version)
 544 {
 545         pkg_vec_t *vec;
 546         int i;
 547         char *version_str = NULL;
 548
 549         if (!(vec = pkg_vec_fetch_by_name(pkg_name)))
 550                 return NULL;
 551
 552         for (i = 0; i < vec->len; i++) {
 553                 version_str = pkg_version_str_alloc(vec->pkgs[i]);
 554                 if (!strcmp(version_str, version)) {
 555                         free(version_str);
 556                         break;
 557                 }
 558                 free(version_str);
 559         }
 560
 561         if (i == vec->len)
 562                 return NULL;
 563
 564         return vec->pkgs[i];
 565 }
 566
 567 pkg_t *pkg_hash_fetch_installed_by_name_dest(const char *pkg_name,
 568                                              pkg_dest_t * dest)
 569 {
 570         pkg_vec_t *vec;
 571         int i;
 572
 573         if (!(vec = pkg_vec_fetch_by_name(pkg_name))) {
 574                 return NULL;
 575         }
 576
 577         for (i = 0; i < vec->len; i++)
 578                 if ((vec->pkgs[i]->state_status == SS_INSTALLED
 579                      || vec->pkgs[i]->state_status == SS_UNPACKED)
 580                     && vec->pkgs[i]->dest == dest) {
 581                         return vec->pkgs[i];
 582                 }
 583
 584         return NULL;
 585 }
 586
 587 pkg_t *pkg_hash_fetch_installed_by_name(const char *pkg_name)
 588 {
 589         pkg_vec_t *vec;
 590         int i;
 591
 592         if (!(vec = pkg_vec_fetch_by_name(pkg_name))) {
 593                 return NULL;
 594         }
 595
 596         for (i = 0; i < vec->len; i++) {
 597                 if (vec->pkgs[i]->state_status == SS_INSTALLED
 598                     || vec->pkgs[i]->state_status == SS_UNPACKED) {
 599                         return vec->pkgs[i];
 600                 }
 601         }
 602
 603         return NULL;
 604 }
 605
 606 static void
 607 pkg_hash_fetch_available_helper(const char *pkg_name, void *entry, void *data)
 608 {
 609         int j;
 610         abstract_pkg_t *ab_pkg = (abstract_pkg_t *) entry;
 611         pkg_vec_t *all = (pkg_vec_t *) data;
 612         pkg_vec_t *pkg_vec = ab_pkg->pkgs;
 613
 614         if (!pkg_vec)
 615                 return;
 616
 617         for (j = 0; j < pkg_vec->len; j++) {
 618                 pkg_t *pkg = pkg_vec->pkgs[j];
 619                 pkg_vec_insert(all, pkg);
 620         }
 621 }
 622
 623 void pkg_hash_fetch_available(pkg_vec_t * all)
 624 {
 625         hash_table_foreach(&conf->pkg_hash, pkg_hash_fetch_available_helper,
 626                            all);
 627 }
 628
 629 static void
 630 pkg_hash_fetch_all_installed_helper(const char *pkg_name, void *entry,
 631                                     void *data)
 632 {
 633         abstract_pkg_t *ab_pkg = (abstract_pkg_t *) entry;
 634         pkg_vec_t *all = (pkg_vec_t *) data;
 635         pkg_vec_t *pkg_vec = ab_pkg->pkgs;
 636         int j;
 637
 638         if (!pkg_vec)
 639                 return;
 640
 641         for (j = 0; j < pkg_vec->len; j++) {
 642                 pkg_t *pkg = pkg_vec->pkgs[j];
 643                 if (pkg->state_status == SS_INSTALLED
 644                     || pkg->state_status == SS_UNPACKED)
 645                         pkg_vec_insert(all, pkg);
 646         }
 647 }
 648
 649 void pkg_hash_fetch_all_installed(pkg_vec_t * all)
 650 {
 651         hash_table_foreach(&conf->pkg_hash, pkg_hash_fetch_all_installed_helper,
 652                            all);
 653 }
 654
 655 /*
 656  * This assumes that the abstract pkg doesn't exist.
 657  */
 658 static abstract_pkg_t *add_new_abstract_pkg_by_name(const char *pkg_name)
 659 {
 660         abstract_pkg_t *ab_pkg;
 661
 662         ab_pkg = abstract_pkg_new();
 663
 664         ab_pkg->name = xstrdup(pkg_name);
 665         hash_table_insert(&conf->pkg_hash, pkg_name, ab_pkg);
 666
 667         return ab_pkg;
 668 }
 669
 670 abstract_pkg_t *ensure_abstract_pkg_by_name(const char *pkg_name)
 671 {
 672         abstract_pkg_t *ab_pkg;
 673
 674         if (!(ab_pkg = abstract_pkg_fetch_by_name(pkg_name)))
 675                 ab_pkg = add_new_abstract_pkg_by_name(pkg_name);
 676
 677         return ab_pkg;
 678 }
 679
 680 void hash_insert_pkg(pkg_t * pkg, int set_status)
 681 {
 682         abstract_pkg_t *ab_pkg;
 683
 684         ab_pkg = ensure_abstract_pkg_by_name(pkg->name);
 685         if (!ab_pkg->pkgs)
 686                 ab_pkg->pkgs = pkg_vec_alloc();
 687
 688         if (pkg->state_status == SS_INSTALLED) {
 689                 ab_pkg->state_status = SS_INSTALLED;
 690         } else if (pkg->state_status == SS_UNPACKED) {
 691                 ab_pkg->state_status = SS_UNPACKED;
 692         }
 693
 694         buildDepends(pkg);
 695
 696         buildProvides(ab_pkg, pkg);
 697
 698         init_providelist(pkg, NULL);
 699
 700         /* Need to build the conflicts graph before replaces for correct
 701          * calculation of replaced_by relation.
 702          */
 703         buildConflicts(pkg);
 704
 705         buildReplaces(ab_pkg, pkg);
 706
 707         buildDependedUponBy(pkg, ab_pkg);
 708
 709         pkg_vec_insert_merge(ab_pkg->pkgs, pkg, set_status);
 710         pkg->parent = ab_pkg;
 711 }
 712
 713 static const char *strip_offline_root(const char *file_name)
 714 {
 715         unsigned int len;
 716
 717         if (conf->offline_root) {
 718                 len = strlen(conf->offline_root);
 719                 if (strncmp(file_name, conf->offline_root, len) == 0)
 720                         file_name += len;
 721         }
 722
 723         return file_name;
 724 }
 725
 726 void file_hash_remove(const char *file_name)
 727 {
 728         file_name = strip_offline_root(file_name);
 729         hash_table_remove(&conf->file_hash, file_name);
 730 }
 731
 732 pkg_t *file_hash_get_file_owner(const char *file_name)
 733 {
 734         file_name = strip_offline_root(file_name);
 735         return hash_table_get(&conf->file_hash, file_name);
 736 }
 737
 738 void file_hash_set_file_owner(const char *file_name, pkg_t * owning_pkg)
 739 {
 740         pkg_t *old_owning_pkg;
 741         int file_name_len = strlen(file_name);
 742
 743         if (file_name[file_name_len - 1] == '/')
 744                 return;
 745
 746         file_name = strip_offline_root(file_name);
 747
 748         old_owning_pkg = hash_table_get(&conf->file_hash, file_name);
 749         hash_table_insert(&conf->file_hash, file_name, owning_pkg);
 750
 751         if (old_owning_pkg) {
 752                 pkg_get_installed_files(old_owning_pkg);
 753                 str_list_remove_elt(old_owning_pkg->installed_files, file_name);
 754                 pkg_free_installed_files(old_owning_pkg);
 755
 756                 /* mark this package to have its filelist written */
 757                 old_owning_pkg->state_flag |= SF_FILELIST_CHANGED;
 758                 owning_pkg->state_flag |= SF_FILELIST_CHANGED;
 759         }
 760 }