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 "includes.h"
  19 #include <errno.h>
  20 #include <ctype.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23
  24 #include "hash_table.h"
  25 #include "pkg.h"
  26 #include "opkg_message.h"
  27 #include "pkg_vec.h"
  28 #include "pkg_hash.h"
  29 #include "pkg_parse.h"
  30 #include "opkg_utils.h"
  31
  32 static abstract_pkg_t * add_new_abstract_pkg_by_name(hash_table_t * hash, const char * pkg_name);
  33
  34 /*
  35  * this will talk to both feeds-lists files and installed status files
  36  * example api:
  37  *
  38  * hash_table_t hash;
  39  * pkg_hash_init(name, &hash, 1000);
  40  * pkg_hash_add_from_file(<feed filename>);
  41  *
  42  * the query function is just there as a shell to prove to me that this
  43  * sort of works, but isn't far from doing something useful
  44  *
  45  * -sma, 12/21/01
  46  * modified: CDW 3 Jan. 2002
  47  */
  48
  49
  50 int pkg_hash_init(const char *name, hash_table_t *hash, int len)
  51 {
  52   return hash_table_init(name, hash, len);
  53 }
  54
  55 void free_pkgs (const char *key, void *entry, void *data)
  56 {
  57   int i;
  58   abstract_pkg_t *ab_pkg;
  59
  60   /* each entry in the hash table is an abstract package, which contains a list
  61    * of packages that provide the abstract package */
  62
  63   ab_pkg = (abstract_pkg_t*) entry;
  64
  65   if (ab_pkg->pkgs)
  66   {
  67     for (i = 0; i < ab_pkg->pkgs->len; i++)
  68     {
  69       pkg_deinit (ab_pkg->pkgs->pkgs[i]);
  70       free (ab_pkg->pkgs->pkgs[i]);
  71     }
  72   }
  73
  74   abstract_pkg_vec_free (ab_pkg->provided_by);
  75   abstract_pkg_vec_free (ab_pkg->replaced_by);
  76   pkg_vec_free (ab_pkg->pkgs);
  77   free (ab_pkg->depended_upon_by);
  78   free (ab_pkg->name);
  79   free (ab_pkg);
  80 }
  81
  82 void pkg_hash_deinit(hash_table_t *hash)
  83 {
  84   hash_table_foreach (hash, free_pkgs, NULL);
  85   hash_table_deinit(hash);
  86 }
  87
  88
  89 /* Find the default arch for a given package status file if none is given. */
  90 static char *pkg_get_default_arch(opkg_conf_t *conf)
  91 {
  92      nv_pair_list_elt_t *l;
  93      char *def_arch = HOST_CPU_STR;             /* Default arch */
  94      int def_prio = 0;                          /* Other archs override this */
  95
  96      l = conf->arch_list.head;
  97
  98      while (l) {
  99           nv_pair_t *nv = l->data;
 100           int priority = strtol(nv->value, NULL, 0);
 101
 102           /* Check if this arch has higher priority, and is valid */
 103           if ((priority > def_prio) &&
 104               (strcmp(nv->name, "all")) && (strcmp(nv->name, "noarch"))) {
 105                /* Our new default */
 106                def_prio = priority;
 107                def_arch = nv->name;
 108           }
 109           l = l->next;
 110      }
 111
 112      return strdup(def_arch);
 113 }
 114
 115 int pkg_hash_add_from_file(opkg_conf_t *conf, const char *file_name,
 116                            pkg_src_t *src, pkg_dest_t *dest, int is_status_file)
 117 {
 118      hash_table_t *hash = &conf->pkg_hash;
 119      char **raw;
 120      char **raw_start;
 121      pkg_t *pkg;
 122
 123      raw = raw_start = read_raw_pkgs_from_file(file_name);
 124      if (!raw)
 125         return -ENOMEM;
 126
 127      while(*raw){         /* don't worry, we'll increment raw in the parsing function */
 128           pkg = pkg_new();
 129           if (!pkg)
 130                return -ENOMEM;
 131
 132           if (pkg_parse_raw(pkg, &raw, src, dest) == 0) {
 133                if (!pkg->architecture) {
 134                     char *version_str = pkg_version_str_alloc(pkg);
 135                     pkg->architecture = pkg_get_default_arch(conf);
 136                     opkg_message(conf, OPKG_ERROR, "Package %s version %s has no architecture specified, defaulting to %s.\n",
 137                                  pkg->name, version_str, pkg->architecture);
 138                     free(version_str);
 139                }
 140                hash_insert_pkg(hash, pkg, is_status_file,conf);
 141           } else {
 142                pkg_deinit (pkg);
 143                free(pkg);
 144           }
 145      }
 146
 147      /* XXX: CLEANUP: I'd like a cleaner interface for cleaning up
 148         memory after read_raw_pkgs_from_file */
 149      raw = raw_start;
 150      while (*raw) {
 151           free(*raw++);
 152      }
 153      free(raw_start);
 154      return 0;
 155 }
 156
 157 abstract_pkg_t * abstract_pkg_fetch_by_name(hash_table_t * hash, const char * pkg_name)
 158 {
 159   return (abstract_pkg_t *)hash_table_get(hash, pkg_name);
 160 }
 161
 162 abstract_pkg_vec_t *pkg_hash_fetch_all_installation_candidates(hash_table_t *hash, const char *name)
 163 {
 164     abstract_pkg_t *apkg = abstract_pkg_fetch_by_name(hash, name);
 165     if (apkg)
 166        return NULL;
 167     return apkg->provided_by;
 168 }
 169
 170
 171 pkg_t *pkg_hash_fetch_best_installation_candidate(opkg_conf_t *conf, abstract_pkg_t *apkg,
 172                                                   int (*constraint_fcn)(pkg_t *pkg, void *cdata), void *cdata, int quiet, int *err)
 173 {
 174      int i;
 175      int nprovides = 0;
 176      int nmatching = 0;
 177      pkg_vec_t *matching_pkgs = pkg_vec_alloc();
 178      abstract_pkg_vec_t *matching_apkgs = abstract_pkg_vec_alloc();
 179      abstract_pkg_vec_t *provided_apkg_vec;
 180      abstract_pkg_t **provided_apkgs;
 181      abstract_pkg_vec_t *providers = abstract_pkg_vec_alloc();
 182      pkg_t *latest_installed_parent = NULL;
 183      pkg_t *latest_matching = NULL;
 184      pkg_t *held_pkg = NULL;
 185      pkg_t *good_pkg_by_name = NULL;
 186
 187      if (err)
 188        *err = 0;
 189
 190      if (matching_apkgs == NULL || providers == NULL ||
 191          apkg == NULL || apkg->provided_by == NULL || (apkg->provided_by->len == 0))
 192           return NULL;
 193
 194      opkg_message(conf, OPKG_DEBUG, "best installation candidate for %s\n", apkg->name);
 195
 196      provided_apkg_vec = apkg->provided_by;
 197      nprovides = provided_apkg_vec->len;
 198      provided_apkgs = provided_apkg_vec->pkgs;
 199      if (nprovides > 1)
 200           opkg_message(conf, OPKG_DEBUG, " apkg=%s nprovides=%d\n", apkg->name, nprovides);
 201
 202      /* accumulate all the providers */
 203      for (i = 0; i < nprovides; i++) {
 204           abstract_pkg_t *provider_apkg = provided_apkgs[i];
 205           opkg_message(conf, OPKG_DEBUG, " adding %s to providers\n", provider_apkg->name);
 206           abstract_pkg_vec_insert(providers, provider_apkg);
 207      }
 208      nprovides = providers->len;
 209
 210      for (i = 0; i < nprovides; i++) {
 211           abstract_pkg_t *provider_apkg = abstract_pkg_vec_get(providers, i);
 212           abstract_pkg_t *replacement_apkg = NULL;
 213           pkg_vec_t *vec;
 214
 215           if (provider_apkg->replaced_by && provider_apkg->replaced_by->len) {
 216                replacement_apkg = provider_apkg->replaced_by->pkgs[0];
 217                if (provider_apkg->replaced_by->len > 1) {
 218                     opkg_message(conf, OPKG_NOTICE, "Multiple replacers for %s, using first one (%s)\n",
 219                                  provider_apkg->name, replacement_apkg->name);
 220                }
 221           }
 222
 223           if (replacement_apkg)
 224                opkg_message(conf, OPKG_DEBUG, "   replacement_apkg=%s for provider_apkg=%s\n",
 225                             replacement_apkg->name, provider_apkg->name);
 226
 227           if (replacement_apkg && (replacement_apkg != provider_apkg)) {
 228                if (abstract_pkg_vec_contains(providers, replacement_apkg))
 229                     continue;
 230                else
 231                     provider_apkg = replacement_apkg;
 232           }
 233
 234           if (!(vec = provider_apkg->pkgs)) {
 235                opkg_message(conf, OPKG_DEBUG, "   no pkgs for provider_apkg %s\n", provider_apkg->name);
 236                continue;
 237           }
 238
 239
 240           /* now check for supported architecture */
 241           {
 242                int max_count = 0;
 243                int i;
 244
 245                /* count packages matching max arch priority and keep track of last one */
 246                for (i = 0; i < vec->len; i++) {
 247                     pkg_t *maybe = vec->pkgs[i];
 248                     opkg_message(conf, OPKG_DEBUG, "  %s arch=%s arch_priority=%d version=%s  \n",
 249                                  maybe->name, maybe->architecture, maybe->arch_priority, maybe->version);
 250                     if (maybe->arch_priority > 0)  {
 251                          max_count++;
 252                          abstract_pkg_vec_insert(matching_apkgs, maybe->parent);
 253                          pkg_vec_insert(matching_pkgs, maybe);
 254                     }
 255                }
 256
 257                 if (vec->len > 0 && matching_pkgs->len < 1)
 258                 {
 259                   opkg_message (conf, OPKG_ERROR, "Packages were found, but none compatible with the architectures configured\n");
 260                   if (err)
 261                     *err = OPKG_PKG_HAS_NO_AVAILABLE_ARCH;
 262                 }
 263           }
 264      }
 265
 266      if (matching_pkgs->len > 1)
 267           pkg_vec_sort(matching_pkgs, pkg_name_version_and_architecture_compare);
 268      if (matching_apkgs->len > 1)
 269           abstract_pkg_vec_sort(matching_pkgs, abstract_pkg_name_compare);
 270
 271 /* Here it is usefull, if ( matching_apkgs->len > 1 ), to test if one of this matching packages has the same name of the
 272    needed package. In this case, I would return it for install, otherwise I will continue with the procedure */
 273 /* The problem is what to do when there are more than a mathing package, with the same name and several version ?
 274    Until now I always got the latest, but that breaks the downgrade option.
 275    If I stop at the first one, I would probably miss the new ones
 276    Maybe the way is to have some kind of flag somewhere, to see if the package been asked to install is from a file,
 277    or from a Packages feed.
 278    It it is from a file it always need to be checked whatever version I have in feeds or everywhere, according to force-down or whatever options*/
 279 /*Pigi*/
 280
 281      for (i = 0; i < matching_pkgs->len; i++) {
 282           pkg_t *matching = matching_pkgs->pkgs[i];
 283           if (constraint_fcn(matching, cdata)) {  /* We found it */
 284              opkg_message(conf, OPKG_DEBUG, " Found a valid candidate for the install: %s %s  \n", matching->name, matching->version) ;
 285              good_pkg_by_name = matching;
 286              if ( matching->provided_by_hand == 1 )    /* It has been provided by hand, so it is what user want */
 287                 break;
 288           }
 289      }
 290
 291
 292      for (i = 0; i < matching_pkgs->len; i++) {
 293           pkg_t *matching = matching_pkgs->pkgs[i];
 294           latest_matching = matching;
 295           if (matching->parent->state_status == SS_INSTALLED || matching->parent->state_status == SS_UNPACKED)
 296                latest_installed_parent = matching;
 297           if (matching->state_flag & (SF_HOLD|SF_PREFER)) {
 298                if (held_pkg)
 299                     opkg_message(conf, OPKG_NOTICE, "Multiple packages (%s and %s) providing same name marked HOLD or PREFER.  Using latest.\n",
 300                                  held_pkg->name, matching->name);
 301                held_pkg = matching;
 302           }
 303      }
 304
 305      if (!good_pkg_by_name && !held_pkg && !latest_installed_parent && matching_apkgs->len > 1 && !quiet) {
 306           opkg_message(conf, OPKG_ERROR, "Package=%s, %d matching providers\n",
 307                        apkg->name, matching_apkgs->len);
 308           for (i = 0; i < matching_apkgs->len; i++) {
 309               abstract_pkg_t *matching = matching_apkgs->pkgs[i];
 310               opkg_message(conf, OPKG_ERROR, "    %s\n", matching->name);
 311           }
 312           opkg_message(conf, OPKG_ERROR, "Please select one with opkg install or opkg flag prefer\n");
 313      }
 314
 315      if (matching_apkgs->len > 1 && conf->verbosity > 1) {
 316           opkg_message(conf, OPKG_NOTICE, "%s: for apkg=%s, %d matching pkgs\n",
 317                        __FUNCTION__, apkg->name, matching_pkgs->len);
 318           for (i = 0; i < matching_pkgs->len; i++) {
 319                pkg_t *matching = matching_pkgs->pkgs[i];
 320                opkg_message(conf, OPKG_INFO, "    %s %s %s\n",
 321                             matching->name, matching->version, matching->architecture);
 322           }
 323      }
 324
 325      nmatching = matching_apkgs->len;
 326
 327      pkg_vec_free(matching_pkgs);
 328      abstract_pkg_vec_free(matching_apkgs);
 329      abstract_pkg_vec_free(providers);
 330
 331      if (good_pkg_by_name) {   /* We found a good candidate, we will install it */
 332           return good_pkg_by_name;
 333      }
 334      if (held_pkg) {
 335           opkg_message(conf, OPKG_INFO, "  using held package %s\n", held_pkg->name);
 336           return held_pkg;
 337      }
 338      if (latest_installed_parent) {
 339           opkg_message(conf, OPKG_INFO, "  using latest version of installed package %s\n", latest_installed_parent->name);
 340           return latest_installed_parent;
 341      }
 342      if (nmatching > 1) {
 343           opkg_message(conf, OPKG_INFO, "  no matching pkg out of matching_apkgs=%d\n", nmatching);
 344           return NULL;
 345      }
 346      if (latest_matching) {
 347           opkg_message(conf, OPKG_INFO, "  using latest matching %s %s %s\n",
 348                        latest_matching->name, latest_matching->version, latest_matching->architecture);
 349           return latest_matching;
 350      }
 351      return NULL;
 352 }
 353
 354 static int pkg_name_constraint_fcn(pkg_t *pkg, void *cdata)
 355 {
 356      const char *name = (const char *)cdata;
 357      if (strcmp(pkg->name, name) == 0)
 358           return 1;
 359      else
 360           return 0;
 361 }
 362
 363 pkg_t *pkg_hash_fetch_best_installation_candidate_by_name(opkg_conf_t *conf, const char *name, int *err)
 364 {
 365      hash_table_t *hash = &conf->pkg_hash;
 366      abstract_pkg_t *apkg = NULL;
 367      pkg_t *ret;
 368
 369      if (!(apkg = abstract_pkg_fetch_by_name(hash, name)))
 370           return NULL;
 371
 372      ret = pkg_hash_fetch_best_installation_candidate(conf, apkg, pkg_name_constraint_fcn, apkg->name, 0, err);
 373
 374      return ret;
 375 }
 376
 377
 378 pkg_t * pkg_hash_fetch_by_name_version(hash_table_t *hash,
 379                                        const char *pkg_name,
 380                                        const char * version)
 381 {
 382     pkg_vec_t * vec;
 383     register int i;
 384     char *version_str = NULL;
 385
 386     if(!(vec = pkg_vec_fetch_by_name(hash, pkg_name)))
 387         return NULL;
 388
 389     for(i = 0; i < vec->len; i++) {
 390         version_str = pkg_version_str_alloc(vec->pkgs[i]);
 391         if(!strcmp(version_str, version)) {
 392             free(version_str);
 393             break;
 394         }
 395         free(version_str);
 396     }
 397
 398     if(i == vec->len)
 399         return NULL;
 400
 401     return vec->pkgs[i];
 402 }
 403
 404 pkg_t *pkg_hash_fetch_installed_by_name_dest(hash_table_t *hash,
 405                                              const char *pkg_name,
 406                                              pkg_dest_t *dest)
 407 {
 408     pkg_vec_t * vec;
 409     register int i;
 410
 411     if(!(vec = pkg_vec_fetch_by_name(hash, pkg_name))) {
 412         return NULL;
 413     }
 414
 415     for(i = 0; i < vec->len; i++)
 416         if((vec->pkgs[i]->state_status == SS_INSTALLED || vec->pkgs[i]->state_status == SS_UNPACKED) && vec->pkgs[i]->dest == dest) {
 417             return vec->pkgs[i];
 418         }
 419     return NULL;
 420 }
 421
 422 pkg_t *pkg_hash_fetch_installed_by_name(hash_table_t *hash,
 423                                         const char *pkg_name)
 424 {
 425     pkg_vec_t * vec;
 426     register int i;
 427
 428     if(!(vec = pkg_vec_fetch_by_name(hash, pkg_name))){
 429         return NULL;
 430     }
 431
 432     for(i = 0; i < vec->len; i++)
 433         if (vec->pkgs[i]->state_status == SS_INSTALLED || vec->pkgs[i]->state_status == SS_UNPACKED){
 434             return vec->pkgs[i];
 435         }
 436
 437     return NULL;
 438 }
 439
 440 pkg_vec_t *pkg_vec_fetch_by_name(hash_table_t *hash, const char *pkg_name)
 441 {
 442     abstract_pkg_t * ab_pkg;
 443
 444     if(!(ab_pkg = abstract_pkg_fetch_by_name(hash, pkg_name))){
 445        return NULL;
 446     }
 447
 448     if (ab_pkg->pkgs) {
 449       return ab_pkg->pkgs;
 450     } else if (ab_pkg->provided_by) {
 451       abstract_pkg_t *abpkg =  abstract_pkg_vec_get(ab_pkg->provided_by, 0);
 452       if (abpkg != NULL){
 453           return abpkg->pkgs;
 454       } else {
 455           return ab_pkg->pkgs;
 456       }
 457     } else {
 458       return NULL;
 459     }
 460 }
 461
 462 static int pkg_compare_names(const void *p1, const void *p2)
 463 {
 464   const pkg_t *pkg1 = *(const pkg_t **)p1;
 465   const pkg_t *pkg2 = *(const pkg_t **)p2;
 466   if (pkg1->name == NULL)
 467     return 1;
 468   if (pkg2->name == NULL)
 469     return -1;
 470   return(strcmp(pkg1->name, pkg2->name));
 471 }
 472
 473
 474 static void pkg_hash_fetch_available_helper(const char *pkg_name, void *entry, void *data)
 475 {
 476   int j;
 477   abstract_pkg_t *ab_pkg = (abstract_pkg_t *)entry;
 478   pkg_vec_t *all = (pkg_vec_t *)data;
 479   pkg_vec_t *pkg_vec = ab_pkg->pkgs;
 480   if (pkg_vec) {
 481     for (j = 0; j < pkg_vec->len; j++) {
 482       pkg_t *pkg = pkg_vec->pkgs[j];
 483       pkg_vec_insert(all, pkg);
 484     }
 485   }
 486 }
 487
 488 void pkg_hash_fetch_available(hash_table_t *hash, pkg_vec_t *all)
 489 {
 490     hash_table_foreach(hash, pkg_hash_fetch_available_helper, all);
 491     qsort(all->pkgs, all->len, sizeof(pkg_t *), pkg_compare_names);
 492 }
 493
 494 static void pkg_hash_fetch_all_installed_helper(const char *pkg_name, void *entry, void *data)
 495 {
 496   abstract_pkg_t *ab_pkg = (abstract_pkg_t *)entry;
 497   pkg_vec_t *all = (pkg_vec_t *)data;
 498   pkg_vec_t *pkg_vec = ab_pkg->pkgs;
 499   int j;
 500   if (pkg_vec) {
 501     for (j = 0; j < pkg_vec->len; j++) {
 502       pkg_t *pkg = pkg_vec->pkgs[j];
 503       if (pkg->state_status == SS_INSTALLED || pkg->state_status == SS_UNPACKED) {
 504         pkg_vec_insert(all, pkg);
 505       }
 506     }
 507   }
 508 }
 509 void pkg_hash_fetch_all_installed(hash_table_t *hash, pkg_vec_t *all)
 510 {
 511     hash_table_foreach(hash, pkg_hash_fetch_all_installed_helper, all);
 512     qsort(all->pkgs, all->len, sizeof(void*), pkg_compare_names);
 513 }
 514
 515 static void pkg_hash_dump_helper(const char *pkg_name, void *entry, void *data)
 516 {
 517   int i;
 518   pkg_t *pkg;
 519   abstract_pkg_t *ab_pkg = (abstract_pkg_t *)entry;
 520   opkg_conf_t *conf = (opkg_conf_t *)data;
 521   abstract_pkg_t ** dependents = ab_pkg->depended_upon_by;
 522   fprintf(stdout, "%s\n", ab_pkg->name);
 523   i = 0;
 524   if (dependents != NULL)
 525     while (dependents [i] != NULL)
 526       printf ("\tdepended upon by - %s\n", dependents [i ++]->name);
 527   dependents = ab_pkg->provided_by->pkgs;
 528   i = 0;
 529   if (dependents != NULL)
 530     while (dependents [i] != NULL && i < ab_pkg->provided_by->len)
 531       printf ("\tprovided by - %s\n", dependents [i ++]->name);
 532   pkg = pkg_hash_fetch_best_installation_candidate_by_name (conf, ab_pkg->name, NULL);
 533   if (pkg) {
 534     i = 0;
 535     while (i < pkg->depends_count)
 536       printf ("\tdepends on - %s\n", pkg->depends_str [i ++]);
 537   }
 538 }
 539 void pkg_hash_dump(hash_table_t *hash, void *data)
 540 {
 541
 542   printf ("\n\n+=+%s+=+\n\n", __FUNCTION__);
 543   hash_table_foreach(hash, pkg_hash_dump_helper, data);
 544   printf ("\n+=+%s+=+\n\n", __FUNCTION__);
 545 }
 546
 547 abstract_pkg_t * ensure_abstract_pkg_by_name(hash_table_t * hash, const char * pkg_name)
 548 {
 549   abstract_pkg_t * ab_pkg;
 550
 551   if(!(ab_pkg = abstract_pkg_fetch_by_name(hash, pkg_name)))
 552     ab_pkg = add_new_abstract_pkg_by_name(hash, pkg_name);
 553
 554   return ab_pkg;
 555 }
 556
 557 pkg_t *hash_insert_pkg(hash_table_t *hash, pkg_t *pkg, int set_status,opkg_conf_t *conf)
 558 {
 559      abstract_pkg_t * ab_pkg;
 560      int arch_priority;
 561
 562      if(!pkg)
 563           return pkg;
 564
 565      arch_priority = pkg->arch_priority;
 566
 567      if (buildDepends(hash, pkg)<0){
 568         fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
 569         return NULL;
 570      }
 571      ab_pkg = ensure_abstract_pkg_by_name(hash, pkg->name);
 572
 573      if (set_status) {
 574           if (pkg->state_status == SS_INSTALLED) {
 575                ab_pkg->state_status = SS_INSTALLED;
 576           } else if (pkg->state_status == SS_UNPACKED) {
 577                ab_pkg->state_status = SS_UNPACKED;
 578           }
 579      }
 580
 581      if(!ab_pkg->pkgs)
 582           ab_pkg->pkgs = pkg_vec_alloc();
 583
 584      /* pkg_vec_insert_merge might munge package, but it returns an unmunged pkg */
 585      pkg = pkg_vec_insert_merge(ab_pkg->pkgs, pkg, set_status,conf );
 586      pkg->parent = ab_pkg;
 587
 588      if (buildProvides(hash, ab_pkg, pkg)<0){
 589         fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
 590         return NULL;
 591      }
 592      /* need to build the conflicts graph before replaces for correct calculation of replaced_by relation */
 593      if (buildConflicts(hash, ab_pkg, pkg)<0){
 594         fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
 595         return NULL;
 596      }
 597      if (buildReplaces(hash, ab_pkg, pkg)<0) {
 598         fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
 599         return NULL;
 600      }
 601
 602      buildDependedUponBy(pkg, ab_pkg);
 603      return pkg;
 604 }
 605
 606 /*
 607  * this will assume that we've already determined that
 608  * the abstract pkg doesn't exist, 'cause we should know these things...
 609  */
 610 static abstract_pkg_t * add_new_abstract_pkg_by_name(hash_table_t * hash, const char * pkg_name)
 611 {
 612   abstract_pkg_t * ab_pkg;
 613
 614   ab_pkg = abstract_pkg_new();
 615   if (ab_pkg == NULL) { return NULL; }
 616
 617   ab_pkg->name = strdup(pkg_name);
 618   hash_table_insert(hash, pkg_name, ab_pkg);
 619
 620   return ab_pkg;
 621 }
 622
 623
 624 pkg_t *file_hash_get_file_owner(opkg_conf_t *conf, const char *file_name)
 625 {
 626      hash_table_t *file_hash = &conf->file_hash;
 627
 628      return hash_table_get(file_hash, file_name);
 629 }
 630
 631 int file_hash_set_file_owner(opkg_conf_t *conf, const char *file_name, pkg_t *owning_pkg)
 632 {
 633      hash_table_t *file_hash = &conf->file_hash;
 634      pkg_t *old_owning_pkg = hash_table_get(file_hash, file_name);
 635      int file_name_len = strlen(file_name);
 636
 637      if (file_name[file_name_len -1] == '/')
 638           return 0;
 639
 640      if (conf->offline_root) {
 641           int len = strlen(conf->offline_root);
 642           if (strncmp(file_name, conf->offline_root, len) == 0) {
 643                file_name += len;
 644           }
 645      }
 646
 647      // opkg_message(conf, OPKG_DEBUG2, "owning_pkg=%s filename=%s\n", owning_pkg->name, file_name);
 648      hash_table_insert(file_hash, file_name, owning_pkg);
 649      if (old_owning_pkg) {
 650           pkg_get_installed_files(old_owning_pkg);
 651           str_list_remove_elt(old_owning_pkg->installed_files, file_name);
 652           pkg_free_installed_files(old_owning_pkg);
 653           /* mark this package to have its filelist written */
 654           old_owning_pkg->state_flag |= SF_FILELIST_CHANGED;
 655           owning_pkg->state_flag |= SF_FILELIST_CHANGED;
 656
 657      }
 658      return 0;
 659 }
 660
 661