apt-private/private-install.cc

   1 // Include Files                                                        /*{{{*/
   2 #include <config.h>
   3
   4 #include <apt-pkg/acquire.h>
   5 #include <apt-pkg/acquire-item.h>
   6 #include <apt-pkg/algorithms.h>
   7 #include <apt-pkg/cachefile.h>
   8 #include <apt-pkg/cacheset.h>
   9 #include <apt-pkg/cmndline.h>
  10 #include <apt-pkg/depcache.h>
  11 #include <apt-pkg/error.h>
  12 #include <apt-pkg/fileutl.h>
  13 #include <apt-pkg/pkgrecords.h>
  14 #include <apt-pkg/pkgsystem.h>
  15 #include <apt-pkg/sptr.h>
  16 #include <apt-pkg/strutl.h>
  17 #include <apt-pkg/cacheiterators.h>
  18 #include <apt-pkg/configuration.h>
  19 #include <apt-pkg/macros.h>
  20 #include <apt-pkg/packagemanager.h>
  21 #include <apt-pkg/pkgcache.h>
  22 #include <apt-pkg/upgrade.h>
  23 #include <apt-pkg/install-progress.h>
  24
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <algorithm>
  28 #include <iostream>
  29 #include <set>
  30 #include <vector>
  31 #include <map>
  32
  33 #include <apt-private/acqprogress.h>
  34 #include <apt-private/private-install.h>
  35 #include <apt-private/private-cachefile.h>
  36 #include <apt-private/private-cacheset.h>
  37 #include <apt-private/private-download.h>
  38 #include <apt-private/private-output.h>
  39
  40 #include <apti18n.h>
  41                                                                         /*}}}*/
  42 class pkgSourceList;
  43
  44 // InstallPackages - Actually download and install the packages         /*{{{*/
  45 // ---------------------------------------------------------------------
  46 /* This displays the informative messages describing what is going to
  47    happen and then calls the download routines */
  48 bool InstallPackages(CacheFile &Cache,bool ShwKept,bool Ask, bool Safety)
  49 {
  50    if (_config->FindB("APT::Get::Purge",false) == true)
  51    {
  52       pkgCache::PkgIterator I = Cache->PkgBegin();
  53       for (; I.end() == false; ++I)
  54       {
  55          if (I.Purge() == false && Cache[I].Mode == pkgDepCache::ModeDelete)
  56             Cache->MarkDelete(I,true);
  57       }
  58    }
  59
  60    bool Fail = false;
  61    bool Essential = false;
  62
  63    // Show all the various warning indicators
  64    ShowDel(c1out,Cache);
  65    ShowNew(c1out,Cache);
  66    if (ShwKept == true)
  67       ShowKept(c1out,Cache);
  68    Fail |= !ShowHold(c1out,Cache);
  69    if (_config->FindB("APT::Get::Show-Upgraded",true) == true)
  70       ShowUpgraded(c1out,Cache);
  71    Fail |= !ShowDowngraded(c1out,Cache);
  72    if (_config->FindB("APT::Get::Download-Only",false) == false)
  73         Essential = !ShowEssential(c1out,Cache);
  74    Fail |= Essential;
  75    Stats(c1out,Cache);
  76
  77    // Sanity check
  78    if (Cache->BrokenCount() != 0)
  79    {
  80       ShowBroken(c1out,Cache,false);
  81       return _error->Error(_("Internal error, InstallPackages was called with broken packages!"));
  82    }
  83
  84    if (Cache->DelCount() == 0 && Cache->InstCount() == 0 &&
  85        Cache->BadCount() == 0)
  86       return true;
  87
  88    // No remove flag
  89    if (Cache->DelCount() != 0 && _config->FindB("APT::Get::Remove",true) == false)
  90       return _error->Error(_("Packages need to be removed but remove is disabled."));
  91
  92    // Run the simulator ..
  93    if (_config->FindB("APT::Get::Simulate") == true)
  94    {
  95       pkgSimulate PM(Cache);
  96
  97       APT::Progress::PackageManager *progress = APT::Progress::PackageManagerProgressFactory();
  98       pkgPackageManager::OrderResult Res = PM.DoInstall(progress);
  99       delete progress;
 100
 101       if (Res == pkgPackageManager::Failed)
 102          return false;
 103       if (Res != pkgPackageManager::Completed)
 104          return _error->Error(_("Internal error, Ordering didn't finish"));
 105       return true;
 106    }
 107
 108    // Create the text record parser
 109    pkgRecords Recs(Cache);
 110    if (_error->PendingError() == true)
 111       return false;
 112
 113    // Create the download object
 114    AcqTextStatus Stat(std::cout, ScreenWidth,_config->FindI("quiet",0));
 115    pkgAcquire Fetcher(&Stat);
 116    if (_config->FindB("APT::Get::Print-URIs", false) == true)
 117    {
 118       // force a hashsum for compatibility reasons
 119       _config->CndSet("Acquire::ForceHash", "md5sum");
 120    }
 121    else if (Fetcher.GetLock(_config->FindDir("Dir::Cache::Archives")) == false)
 122       return false;
 123
 124    // Read the source list
 125    if (Cache.BuildSourceList() == false)
 126       return false;
 127    pkgSourceList *List = Cache.GetSourceList();
 128
 129    // Create the package manager and prepare to download
 130    SPtr<pkgPackageManager> PM= _system->CreatePM(Cache);
 131    if (PM->GetArchives(&Fetcher,List,&Recs) == false ||
 132        _error->PendingError() == true)
 133       return false;
 134
 135    // Display statistics
 136    unsigned long long FetchBytes = Fetcher.FetchNeeded();
 137    unsigned long long FetchPBytes = Fetcher.PartialPresent();
 138    unsigned long long DebBytes = Fetcher.TotalNeeded();
 139    if (DebBytes != Cache->DebSize())
 140    {
 141       c0out << DebBytes << ',' << Cache->DebSize() << std::endl;
 142       c0out << _("How odd... The sizes didn't match, email apt@packages.debian.org") << std::endl;
 143    }
 144
 145    // Number of bytes
 146    if (DebBytes != FetchBytes)
 147       //TRANSLATOR: The required space between number and unit is already included
 148       // in the replacement strings, so %sB will be correctly translate in e.g. 1,5 MB
 149       ioprintf(c1out,_("Need to get %sB/%sB of archives.\n"),
 150                SizeToStr(FetchBytes).c_str(),SizeToStr(DebBytes).c_str());
 151    else if (DebBytes != 0)
 152       //TRANSLATOR: The required space between number and unit is already included
 153       // in the replacement string, so %sB will be correctly translate in e.g. 1,5 MB
 154       ioprintf(c1out,_("Need to get %sB of archives.\n"),
 155                SizeToStr(DebBytes).c_str());
 156
 157    // Size delta
 158    if (Cache->UsrSize() >= 0)
 159       //TRANSLATOR: The required space between number and unit is already included
 160       // in the replacement string, so %sB will be correctly translate in e.g. 1,5 MB
 161       ioprintf(c1out,_("After this operation, %sB of additional disk space will be used.\n"),
 162                SizeToStr(Cache->UsrSize()).c_str());
 163    else
 164       //TRANSLATOR: The required space between number and unit is already included
 165       // in the replacement string, so %sB will be correctly translate in e.g. 1,5 MB
 166       ioprintf(c1out,_("After this operation, %sB disk space will be freed.\n"),
 167                SizeToStr(-1*Cache->UsrSize()).c_str());
 168
 169    if (_error->PendingError() == true)
 170       return false;
 171
 172    if (CheckFreeSpaceBeforeDownload(_config->FindDir("Dir::Cache::Archives"), (FetchBytes - FetchPBytes)) == false)
 173       return false;
 174
 175    // Fail safe check
 176    if (_config->FindI("quiet",0) >= 2 ||
 177        _config->FindB("APT::Get::Assume-Yes",false) == true)
 178    {
 179       if (Fail == true && _config->FindB("APT::Get::Force-Yes",false) == false)
 180          return _error->Error(_("There are problems and -y was used without --force-yes"));
 181    }
 182
 183    if (Essential == true && Safety == true)
 184    {
 185       if (_config->FindB("APT::Get::Trivial-Only",false) == true)
 186          return _error->Error(_("Trivial Only specified but this is not a trivial operation."));
 187
 188       // TRANSLATOR: This string needs to be typed by the user as a confirmation, so be
 189       //             careful with hard to type or special characters (like non-breaking spaces)
 190       const char *Prompt = _("Yes, do as I say!");
 191       ioprintf(c2out,
 192                _("You are about to do something potentially harmful.\n"
 193                  "To continue type in the phrase '%s'\n"
 194                  " ?] "),Prompt);
 195       c2out << std::flush;
 196       if (AnalPrompt(Prompt) == false)
 197       {
 198          c2out << _("Abort.") << std::endl;
 199          exit(1);
 200       }
 201    }
 202    else
 203    {
 204       // Prompt to continue
 205       if (Ask == true || Fail == true)
 206       {
 207          if (_config->FindB("APT::Get::Trivial-Only",false) == true)
 208             return _error->Error(_("Trivial Only specified but this is not a trivial operation."));
 209
 210          if (_config->FindI("quiet",0) < 2 &&
 211              _config->FindB("APT::Get::Assume-Yes",false) == false)
 212          {
 213             c2out << _("Do you want to continue?") << std::flush;
 214             if (YnPrompt() == false)
 215             {
 216                c2out << _("Abort.") << std::endl;
 217                exit(1);
 218             }
 219          }
 220       }
 221    }
 222
 223    // Just print out the uris an exit if the --print-uris flag was used
 224    if (_config->FindB("APT::Get::Print-URIs") == true)
 225    {
 226       pkgAcquire::UriIterator I = Fetcher.UriBegin();
 227       for (; I != Fetcher.UriEnd(); ++I)
 228          std::cout << '\'' << I->URI << "' " << flNotDir(I->Owner->DestFile) << ' ' <<
 229                I->Owner->FileSize << ' ' << I->Owner->HashSum() << std::endl;
 230       return true;
 231    }
 232
 233    if (!CheckAuth(Fetcher, true))
 234       return false;
 235
 236    /* Unlock the dpkg lock if we are not going to be doing an install
 237       after. */
 238    if (_config->FindB("APT::Get::Download-Only",false) == true)
 239       _system->UnLock();
 240
 241    // Run it
 242    while (1)
 243    {
 244       bool Transient = false;
 245       if (_config->FindB("APT::Get::Download",true) == false)
 246       {
 247          for (pkgAcquire::ItemIterator I = Fetcher.ItemsBegin(); I < Fetcher.ItemsEnd();)
 248          {
 249             if ((*I)->Local == true)
 250             {
 251                ++I;
 252                continue;
 253             }
 254
 255             // Close the item and check if it was found in cache
 256             (*I)->Finished();
 257             if ((*I)->Complete == false)
 258                Transient = true;
 259
 260             // Clear it out of the fetch list
 261             delete *I;
 262             I = Fetcher.ItemsBegin();
 263          }
 264       }
 265
 266       bool Failed = false;
 267       if (AcquireRun(Fetcher, 0, &Failed, &Transient) == false)
 268          return false;
 269
 270       /* If we are in no download mode and missing files and there were
 271          'failures' then the user must specify -m. Furthermore, there
 272          is no such thing as a transient error in no-download mode! */
 273       if (Transient == true &&
 274           _config->FindB("APT::Get::Download",true) == false)
 275       {
 276          Transient = false;
 277          Failed = true;
 278       }
 279
 280       if (_config->FindB("APT::Get::Download-Only",false) == true)
 281       {
 282          if (Failed == true && _config->FindB("APT::Get::Fix-Missing",false) == false)
 283             return _error->Error(_("Some files failed to download"));
 284          c1out << _("Download complete and in download only mode") << std::endl;
 285          return true;
 286       }
 287
 288       if (Failed == true && _config->FindB("APT::Get::Fix-Missing",false) == false)
 289       {
 290          return _error->Error(_("Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?"));
 291       }
 292
 293       if (Transient == true && Failed == true)
 294          return _error->Error(_("--fix-missing and media swapping is not currently supported"));
 295
 296       // Try to deal with missing package files
 297       if (Failed == true && PM->FixMissing() == false)
 298       {
 299          c2out << _("Unable to correct missing packages.") << std::endl;
 300          return _error->Error(_("Aborting install."));
 301       }
 302
 303       _system->UnLock();
 304
 305       APT::Progress::PackageManager *progress = APT::Progress::PackageManagerProgressFactory();
 306       pkgPackageManager::OrderResult Res = PM->DoInstall(progress);
 307       delete progress;
 308
 309       if (Res == pkgPackageManager::Failed || _error->PendingError() == true)
 310          return false;
 311       if (Res == pkgPackageManager::Completed)
 312          break;
 313
 314       // Reload the fetcher object and loop again for media swapping
 315       Fetcher.Shutdown();
 316       if (PM->GetArchives(&Fetcher,List,&Recs) == false)
 317          return false;
 318
 319       _system->Lock();
 320    }
 321
 322    std::set<std::string> const disappearedPkgs = PM->GetDisappearedPackages();
 323    if (disappearedPkgs.empty() == false)
 324    {
 325       ShowList(c1out, P_("The following package disappeared from your system as\n"
 326                "all files have been overwritten by other packages:",
 327                "The following packages disappeared from your system as\n"
 328                "all files have been overwritten by other packages:", disappearedPkgs.size()), disappearedPkgs,
 329             [](std::string const &Pkg) { return Pkg.empty() == false; },
 330             [](std::string const &Pkg) { return Pkg; },
 331             [](std::string const &) { return std::string(); });
 332       c0out << _("Note: This is done automatically and on purpose by dpkg.") << std::endl;
 333    }
 334
 335    return true;
 336 }
 337                                                                         /*}}}*/
 338 // DoAutomaticRemove - Remove all automatic unused packages             /*{{{*/
 339 // ---------------------------------------------------------------------
 340 /* Remove unused automatic packages */
 341 static bool DoAutomaticRemove(CacheFile &Cache)
 342 {
 343    bool Debug = _config->FindI("Debug::pkgAutoRemove",false);
 344    bool doAutoRemove = _config->FindB("APT::Get::AutomaticRemove", false);
 345    bool hideAutoRemove = _config->FindB("APT::Get::HideAutoRemove");
 346
 347    pkgDepCache::ActionGroup group(*Cache);
 348    if(Debug)
 349       std::cout << "DoAutomaticRemove()" << std::endl;
 350
 351    if (doAutoRemove == true &&
 352         _config->FindB("APT::Get::Remove",true) == false)
 353    {
 354       c1out << _("We are not supposed to delete stuff, can't start "
 355                  "AutoRemover") << std::endl;
 356       return false;
 357    }
 358
 359    bool purgePkgs = _config->FindB("APT::Get::Purge", false);
 360    bool smallList = (hideAutoRemove == false &&
 361                 strcasecmp(_config->Find("APT::Get::HideAutoRemove","").c_str(),"small") == 0);
 362
 363    unsigned long autoRemoveCount = 0;
 364    APT::PackageSet tooMuch;
 365    SortedPackageUniverse Universe(Cache);
 366    // look over the cache to see what can be removed
 367    for (auto const &Pkg: Universe)
 368    {
 369       if (Cache[Pkg].Garbage)
 370       {
 371          if(Pkg.CurrentVer() != 0 || Cache[Pkg].Install())
 372             if(Debug)
 373                std::cout << "We could delete %s" <<  Pkg.FullName(true).c_str() << std::endl;
 374
 375          if (doAutoRemove)
 376          {
 377             if(Pkg.CurrentVer() != 0 &&
 378                Pkg->CurrentState != pkgCache::State::ConfigFiles)
 379                Cache->MarkDelete(Pkg, purgePkgs, 0, false);
 380             else
 381                Cache->MarkKeep(Pkg, false, false);
 382          }
 383          else
 384          {
 385             // if the package is a new install and already garbage we don't need to
 386             // install it in the first place, so nuke it instead of show it
 387             if (Cache[Pkg].Install() == true && Pkg.CurrentVer() == 0)
 388             {
 389                if (Pkg.CandVersion() != 0)
 390                   tooMuch.insert(Pkg);
 391                Cache->MarkDelete(Pkg, false, 0, false);
 392             }
 393             // only show stuff in the list that is not yet marked for removal
 394             else if(hideAutoRemove == false && Cache[Pkg].Delete() == false)
 395                ++autoRemoveCount;
 396          }
 397       }
 398    }
 399
 400    // we could have removed a new dependency of a garbage package,
 401    // so check if a reverse depends is broken and if so install it again.
 402    if (tooMuch.empty() == false && (Cache->BrokenCount() != 0 || Cache->PolicyBrokenCount() != 0))
 403    {
 404       bool Changed;
 405       do {
 406          Changed = false;
 407          for (APT::PackageSet::iterator Pkg = tooMuch.begin();
 408               Pkg != tooMuch.end(); ++Pkg)
 409          {
 410             APT::PackageSet too;
 411             too.insert(*Pkg);
 412             for (pkgCache::PrvIterator Prv = Cache[Pkg].CandidateVerIter(Cache).ProvidesList();
 413                  Prv.end() == false; ++Prv)
 414                too.insert(Prv.ParentPkg());
 415             for (APT::PackageSet::const_iterator P = too.begin(); P != too.end(); ++P)
 416             {
 417                for (pkgCache::DepIterator R = P.RevDependsList();
 418                     R.end() == false; ++R)
 419                {
 420                   if (R.IsNegative() == true ||
 421                       Cache->IsImportantDep(R) == false)
 422                      continue;
 423                  pkgCache::PkgIterator N = R.ParentPkg();
 424                  if (N.end() == true || (N->CurrentVer == 0 && (*Cache)[N].Install() == false))
 425                     continue;
 426                  if (Debug == true)
 427                     std::clog << "Save " << Pkg << " as another installed garbage package depends on it" << std::endl;
 428                  Cache->MarkInstall(Pkg, false, 0, false);
 429                  if (hideAutoRemove == false)
 430                     ++autoRemoveCount;
 431                  tooMuch.erase(Pkg);
 432                  Changed = true;
 433                  break;
 434                }
 435                if (Changed == true)
 436                   break;
 437             }
 438             if (Changed == true)
 439                break;
 440          }
 441       } while (Changed == true);
 442    }
 443
 444    // Now see if we had destroyed anything (if we had done anything)
 445    if (Cache->BrokenCount() != 0)
 446    {
 447       c1out << _("Hmm, seems like the AutoRemover destroyed something which really\n"
 448                  "shouldn't happen. Please file a bug report against apt.") << std::endl;
 449       c1out << std::endl;
 450       c1out << _("The following information may help to resolve the situation:") << std::endl;
 451       c1out << std::endl;
 452       ShowBroken(c1out,Cache,false);
 453
 454       return _error->Error(_("Internal Error, AutoRemover broke stuff"));
 455    }
 456
 457    // if we don't remove them, we should show them!
 458    if (doAutoRemove == false && autoRemoveCount != 0)
 459    {
 460       if (smallList == false)
 461       {
 462          SortedPackageUniverse Universe(Cache);
 463          ShowList(c1out, P_("The following package was automatically installed and is no longer required:",
 464                   "The following packages were automatically installed and are no longer required:",
 465                   autoRemoveCount), Universe,
 466                [&Cache](pkgCache::PkgIterator const &Pkg) { return (*Cache)[Pkg].Garbage == true && (*Cache)[Pkg].Delete() == false; },
 467                &PrettyFullName, CandidateVersion(&Cache));
 468       }
 469       else
 470          ioprintf(c1out, P_("%lu package was automatically installed and is no longer required.\n",
 471                   "%lu packages were automatically installed and are no longer required.\n", autoRemoveCount), autoRemoveCount);
 472       c1out << P_("Use 'apt-get autoremove' to remove it.", "Use 'apt-get autoremove' to remove them.", autoRemoveCount) << std::endl;
 473    }
 474    return true;
 475 }
 476                                                                         /*}}}*/
 477 // DoCacheManipulationFromCommandLine                                   /*{{{*/
 478 static const unsigned short MOD_REMOVE = 1;
 479 static const unsigned short MOD_INSTALL = 2;
 480
 481 bool DoCacheManipulationFromCommandLine(CommandLine &CmdL, CacheFile &Cache, int UpgradeMode)
 482 {
 483    std::map<unsigned short, APT::VersionSet> verset;
 484    return DoCacheManipulationFromCommandLine(CmdL, Cache, verset, UpgradeMode);
 485 }
 486 bool DoCacheManipulationFromCommandLine(CommandLine &CmdL, CacheFile &Cache,
 487                                         std::map<unsigned short, APT::VersionSet> &verset, int UpgradeMode)
 488 {
 489    // Enter the special broken fixing mode if the user specified arguments
 490    bool BrokenFix = false;
 491    if (Cache->BrokenCount() != 0)
 492       BrokenFix = true;
 493
 494    SPtr<pkgProblemResolver> Fix;
 495    if (_config->FindB("APT::Get::CallResolver", true) == true)
 496       Fix = new pkgProblemResolver(Cache);
 497
 498    unsigned short fallback = MOD_INSTALL;
 499    if (strcasecmp(CmdL.FileList[0],"remove") == 0)
 500       fallback = MOD_REMOVE;
 501    else if (strcasecmp(CmdL.FileList[0], "purge") == 0)
 502    {
 503       _config->Set("APT::Get::Purge", true);
 504       fallback = MOD_REMOVE;
 505    }
 506    else if (strcasecmp(CmdL.FileList[0], "autoremove") == 0)
 507    {
 508       _config->Set("APT::Get::AutomaticRemove", "true");
 509       fallback = MOD_REMOVE;
 510    }
 511
 512    std::list<APT::VersionSet::Modifier> mods;
 513    mods.push_back(APT::VersionSet::Modifier(MOD_INSTALL, "+",
 514                 APT::VersionSet::Modifier::POSTFIX, APT::CacheSetHelper::CANDIDATE));
 515    mods.push_back(APT::VersionSet::Modifier(MOD_REMOVE, "-",
 516                 APT::VersionSet::Modifier::POSTFIX, APT::CacheSetHelper::NEWEST));
 517    CacheSetHelperAPTGet helper(c0out);
 518    verset = APT::VersionSet::GroupedFromCommandLine(Cache,
 519                 CmdL.FileList + 1, mods, fallback, helper);
 520
 521    if (_error->PendingError() == true)
 522    {
 523       helper.showVirtualPackageErrors(Cache);
 524       return false;
 525    }
 526
 527
 528   TryToInstall InstallAction(Cache, Fix, BrokenFix);
 529   TryToRemove RemoveAction(Cache, Fix);
 530
 531    // new scope for the ActionGroup
 532    {
 533       pkgDepCache::ActionGroup group(Cache);
 534       unsigned short const order[] = { MOD_REMOVE, MOD_INSTALL, 0 };
 535
 536       for (unsigned short i = 0; order[i] != 0; ++i)
 537       {
 538          if (order[i] == MOD_INSTALL)
 539             InstallAction = std::for_each(verset[MOD_INSTALL].begin(), verset[MOD_INSTALL].end(), InstallAction);
 540          else if (order[i] == MOD_REMOVE)
 541             RemoveAction = std::for_each(verset[MOD_REMOVE].begin(), verset[MOD_REMOVE].end(), RemoveAction);
 542       }
 543
 544       if (Fix != NULL && _config->FindB("APT::Get::AutoSolving", true) == true)
 545       {
 546          for (unsigned short i = 0; order[i] != 0; ++i)
 547          {
 548             if (order[i] != MOD_INSTALL)
 549                continue;
 550             InstallAction.propergateReleaseCandiateSwitching(helper.selectedByRelease, c0out);
 551             InstallAction.doAutoInstall();
 552          }
 553       }
 554
 555       if (_error->PendingError() == true)
 556       {
 557          return false;
 558       }
 559
 560       /* If we are in the Broken fixing mode we do not attempt to fix the
 561          problems. This is if the user invoked install without -f and gave
 562          packages */
 563       if (BrokenFix == true && Cache->BrokenCount() != 0)
 564       {
 565          c1out << _("You might want to run 'apt-get -f install' to correct these:") << std::endl;
 566          ShowBroken(c1out,Cache,false);
 567          return _error->Error(_("Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution)."));
 568       }
 569
 570       if (Fix != NULL)
 571       {
 572          // Call the scored problem resolver
 573          OpTextProgress Progress(*_config);
 574          bool const distUpgradeMode = strcmp(CmdL.FileList[0], "dist-upgrade") == 0 || strcmp(CmdL.FileList[0], "full-upgrade") == 0;
 575
 576          bool resolver_fail = false;
 577          if (distUpgradeMode == true || UpgradeMode != APT::Upgrade::ALLOW_EVERYTHING)
 578             resolver_fail = APT::Upgrade::Upgrade(Cache, UpgradeMode, &Progress);
 579          else
 580             resolver_fail = Fix->Resolve(true, &Progress);
 581
 582          if (resolver_fail == false && Cache->BrokenCount() == 0)
 583             return false;
 584       }
 585
 586       // Now we check the state of the packages,
 587       if (Cache->BrokenCount() != 0)
 588       {
 589          c1out <<
 590             _("Some packages could not be installed. This may mean that you have\n"
 591               "requested an impossible situation or if you are using the unstable\n"
 592               "distribution that some required packages have not yet been created\n"
 593               "or been moved out of Incoming.") << std::endl;
 594          /*
 595          if (Packages == 1)
 596          {
 597             c1out << std::endl;
 598             c1out <<
 599                _("Since you only requested a single operation it is extremely likely that\n"
 600                  "the package is simply not installable and a bug report against\n"
 601                  "that package should be filed.") << std::endl;
 602          }
 603          */
 604
 605          c1out << _("The following information may help to resolve the situation:") << std::endl;
 606          c1out << std::endl;
 607          ShowBroken(c1out,Cache,false);
 608          if (_error->PendingError() == true)
 609             return false;
 610          else
 611             return _error->Error(_("Broken packages"));
 612       }
 613    }
 614    if (!DoAutomaticRemove(Cache))
 615       return false;
 616
 617    // if nothing changed in the cache, but only the automark information
 618    // we write the StateFile here, otherwise it will be written in
 619    // cache.commit()
 620    if (InstallAction.AutoMarkChanged > 0 &&
 621        Cache->DelCount() == 0 && Cache->InstCount() == 0 &&
 622        Cache->BadCount() == 0 &&
 623        _config->FindB("APT::Get::Simulate",false) == false)
 624       Cache->writeStateFile(NULL);
 625
 626    return true;
 627 }
 628                                                                         /*}}}*/
 629 // DoInstall - Install packages from the command line                   /*{{{*/
 630 // ---------------------------------------------------------------------
 631 /* Install named packages */
 632 struct PkgIsExtraInstalled {
 633    pkgCacheFile * const Cache;
 634    APT::VersionSet const * const verset;
 635    PkgIsExtraInstalled(pkgCacheFile * const Cache, APT::VersionSet const * const Container) : Cache(Cache), verset(Container) {}
 636    bool operator() (pkgCache::PkgIterator const Pkg)
 637    {
 638         if ((*Cache)[Pkg].Install() == false)
 639            return false;
 640         pkgCache::VerIterator const Cand = (*Cache)[Pkg].CandidateVerIter(*Cache);
 641         return verset->find(Cand) == verset->end();
 642    }
 643 };
 644 bool DoInstall(CommandLine &CmdL)
 645 {
 646    CacheFile Cache;
 647    // first check for local pkgs and add them to the cache
 648    for (const char **I = CmdL.FileList; *I != 0; I++)
 649    {
 650       if(FileExists(*I))
 651       {
 652          // FIXME: make this more elegant
 653          std::string TypeStr = flExtension(*I) + "-file";
 654          pkgSourceList::Type *Type = pkgSourceList::Type::GetType(TypeStr.c_str());
 655          if(Type != 0)
 656          {
 657             std::vector<metaIndex *> List;
 658             std::map<std::string, std::string> Options;
 659             if(Type->CreateItem(List, *I, "", "", Options))
 660             {
 661                // we have our own CacheFile that gives us a SourceList
 662                // with superpowerz
 663                SourceList *sources = (SourceList*)Cache.GetSourceList();
 664                sources->AddMetaIndex(List[0]);
 665             }
 666          }
 667       }
 668    }
 669
 670    // then open the cache
 671    if (Cache.OpenForInstall() == false ||
 672        Cache.CheckDeps(CmdL.FileSize() != 1) == false)
 673       return false;
 674
 675    std::map<unsigned short, APT::VersionSet> verset;
 676
 677    if(!DoCacheManipulationFromCommandLine(CmdL, Cache, verset, 0))
 678       return false;
 679
 680    /* Print out a list of packages that are going to be installed extra
 681       to what the user asked */
 682    SortedPackageUniverse Universe(Cache);
 683    if (Cache->InstCount() != verset[MOD_INSTALL].size())
 684       ShowList(c1out, _("The following extra packages will be installed:"), Universe,
 685             PkgIsExtraInstalled(&Cache, &verset[MOD_INSTALL]),
 686             &PrettyFullName, CandidateVersion(&Cache));
 687
 688    /* Print out a list of suggested and recommended packages */
 689    {
 690       std::list<std::string> Recommends, Suggests, SingleRecommends, SingleSuggests;
 691       for (auto const &Pkg: Universe)
 692       {
 693          /* Just look at the ones we want to install */
 694          if ((*Cache)[Pkg].Install() == false)
 695            continue;
 696
 697          // get the recommends/suggests for the candidate ver
 698          pkgCache::VerIterator CV = (*Cache)[Pkg].CandidateVerIter(*Cache);
 699          for (pkgCache::DepIterator D = CV.DependsList(); D.end() == false; )
 700          {
 701             pkgCache::DepIterator Start;
 702             pkgCache::DepIterator End;
 703             D.GlobOr(Start,End); // advances D
 704             if (Start->Type != pkgCache::Dep::Recommends && Start->Type != pkgCache::Dep::Suggests)
 705                continue;
 706
 707             {
 708                // Skip if we already saw this
 709                std::string target;
 710                for (pkgCache::DepIterator I = Start; I != D; ++I)
 711                {
 712                   if (target.empty() == false)
 713                      target.append(" | ");
 714                   target.append(I.TargetPkg().FullName(true));
 715                }
 716                std::list<std::string> &Type = Start->Type == pkgCache::Dep::Recommends ? SingleRecommends : SingleSuggests;
 717                if (std::find(Type.begin(), Type.end(), target) != Type.end())
 718                   continue;
 719                Type.push_back(target);
 720             }
 721
 722             std::list<std::string> OrList;
 723             bool foundInstalledInOrGroup = false;
 724             for (pkgCache::DepIterator I = Start; I != D; ++I)
 725             {
 726                {
 727                   // satisfying package is installed and not marked for deletion
 728                   APT::VersionList installed = APT::VersionList::FromDependency(Cache, I, APT::CacheSetHelper::INSTALLED);
 729                   if (std::find_if(installed.begin(), installed.end(),
 730                            [&Cache](pkgCache::VerIterator const &Ver) { return Cache[Ver.ParentPkg()].Delete() == false; }) != installed.end())
 731                   {
 732                      foundInstalledInOrGroup = true;
 733                      break;
 734                   }
 735                }
 736
 737                {
 738                   // satisfying package is upgraded to/new install
 739                   APT::VersionList upgrades = APT::VersionList::FromDependency(Cache, I, APT::CacheSetHelper::CANDIDATE);
 740                   if (std::find_if(upgrades.begin(), upgrades.end(),
 741                            [&Cache](pkgCache::VerIterator const &Ver) { return Cache[Ver.ParentPkg()].Upgrade(); }) != upgrades.end())
 742                   {
 743                      foundInstalledInOrGroup = true;
 744                      break;
 745                   }
 746                }
 747
 748                if (OrList.empty())
 749                   OrList.push_back(I.TargetPkg().FullName(true));
 750                else
 751                   OrList.push_back("| " + I.TargetPkg().FullName(true));
 752             }
 753
 754             if(foundInstalledInOrGroup == false)
 755             {
 756                std::list<std::string> &Type = Start->Type == pkgCache::Dep::Recommends ? Recommends : Suggests;
 757                std::move(OrList.begin(), OrList.end(), std::back_inserter(Type));
 758             }
 759          }
 760       }
 761       auto always_true = [](std::string const&) { return true; };
 762       auto string_ident = [](std::string const&str) { return str; };
 763       auto verbose_show_candidate =
 764          [&Cache](std::string str)
 765          {
 766             if (APT::String::Startswith(str, "| "))
 767                str.erase(0, 2);
 768             pkgCache::PkgIterator const Pkg = Cache->FindPkg(str);
 769             if (Pkg.end() == true)
 770                return "";
 771             return (*Cache)[Pkg].CandVersion;
 772          };
 773       ShowList(c1out,_("Suggested packages:"), Suggests,
 774             always_true, string_ident, verbose_show_candidate);
 775       ShowList(c1out,_("Recommended packages:"), Recommends,
 776             always_true, string_ident, verbose_show_candidate);
 777    }
 778
 779    // See if we need to prompt
 780    // FIXME: check if really the packages in the set are going to be installed
 781    if (Cache->InstCount() == verset[MOD_INSTALL].size() && Cache->DelCount() == 0)
 782       return InstallPackages(Cache,false,false);
 783
 784    return InstallPackages(Cache,false);
 785 }
 786                                                                         /*}}}*/
 787
 788 // TryToInstall - Mark a package for installation                       /*{{{*/
 789 void TryToInstall::operator() (pkgCache::VerIterator const &Ver) {
 790    pkgCache::PkgIterator Pkg = Ver.ParentPkg();
 791
 792    Cache->GetDepCache()->SetCandidateVersion(Ver);
 793    pkgDepCache::StateCache &State = (*Cache)[Pkg];
 794
 795    // Handle the no-upgrade case
 796    if (_config->FindB("APT::Get::upgrade",true) == false && Pkg->CurrentVer != 0)
 797       ioprintf(c1out,_("Skipping %s, it is already installed and upgrade is not set.\n"),
 798             Pkg.FullName(true).c_str());
 799    // Ignore request for install if package would be new
 800    else if (_config->FindB("APT::Get::Only-Upgrade", false) == true && Pkg->CurrentVer == 0)
 801       ioprintf(c1out,_("Skipping %s, it is not installed and only upgrades are requested.\n"),
 802             Pkg.FullName(true).c_str());
 803    else {
 804       if (Fix != NULL) {
 805          Fix->Clear(Pkg);
 806          Fix->Protect(Pkg);
 807       }
 808       Cache->GetDepCache()->MarkInstall(Pkg,false);
 809
 810       if (State.Install() == false) {
 811          if (_config->FindB("APT::Get::ReInstall",false) == true) {
 812             if (Pkg->CurrentVer == 0 || Pkg.CurrentVer().Downloadable() == false)
 813                ioprintf(c1out,_("Reinstallation of %s is not possible, it cannot be downloaded.\n"),
 814                      Pkg.FullName(true).c_str());
 815             else
 816                Cache->GetDepCache()->SetReInstall(Pkg, true);
 817          } else
 818             ioprintf(c1out,_("%s is already the newest version.\n"),
 819                   Pkg.FullName(true).c_str());
 820       }
 821
 822       // Install it with autoinstalling enabled (if we not respect the minial
 823       // required deps or the policy)
 824       if (FixBroken == false)
 825          doAutoInstallLater.insert(Pkg);
 826    }
 827
 828    // see if we need to fix the auto-mark flag
 829    // e.g. apt-get install foo
 830    // where foo is marked automatic
 831    if (State.Install() == false &&
 832          (State.Flags & pkgCache::Flag::Auto) &&
 833          _config->FindB("APT::Get::ReInstall",false) == false &&
 834          _config->FindB("APT::Get::Only-Upgrade",false) == false &&
 835          _config->FindB("APT::Get::Download-Only",false) == false)
 836    {
 837       ioprintf(c1out,_("%s set to manually installed.\n"),
 838             Pkg.FullName(true).c_str());
 839       Cache->GetDepCache()->MarkAuto(Pkg,false);
 840       AutoMarkChanged++;
 841    }
 842 }
 843                                                                         /*}}}*/
 844 bool TryToInstall::propergateReleaseCandiateSwitching(std::list<std::pair<pkgCache::VerIterator, std::string> > const &start, std::ostream &out)/*{{{*/
 845 {
 846    for (std::list<std::pair<pkgCache::VerIterator, std::string> >::const_iterator s = start.begin();
 847          s != start.end(); ++s)
 848       Cache->GetDepCache()->SetCandidateVersion(s->first);
 849
 850    bool Success = true;
 851    // the Changed list contains:
 852    //   first: "new version"
 853    //   second: "what-caused the change"
 854    std::list<std::pair<pkgCache::VerIterator, pkgCache::VerIterator> > Changed;
 855    for (std::list<std::pair<pkgCache::VerIterator, std::string> >::const_iterator s = start.begin();
 856          s != start.end(); ++s)
 857    {
 858       Changed.push_back(std::make_pair(s->first, pkgCache::VerIterator(*Cache)));
 859       // We continue here even if it failed to enhance the ShowBroken output
 860       Success &= Cache->GetDepCache()->SetCandidateRelease(s->first, s->second, Changed);
 861    }
 862    for (std::list<std::pair<pkgCache::VerIterator, pkgCache::VerIterator> >::const_iterator c = Changed.begin();
 863          c != Changed.end(); ++c)
 864    {
 865       if (c->second.end() == true)
 866          ioprintf(out, _("Selected version '%s' (%s) for '%s'\n"),
 867                c->first.VerStr(), c->first.RelStr().c_str(), c->first.ParentPkg().FullName(true).c_str());
 868       else if (c->first.ParentPkg()->Group != c->second.ParentPkg()->Group)
 869       {
 870          pkgCache::VerIterator V = (*Cache)[c->first.ParentPkg()].CandidateVerIter(*Cache);
 871          ioprintf(out, _("Selected version '%s' (%s) for '%s' because of '%s'\n"), V.VerStr(),
 872                V.RelStr().c_str(), V.ParentPkg().FullName(true).c_str(), c->second.ParentPkg().FullName(true).c_str());
 873       }
 874    }
 875    return Success;
 876 }
 877                                                                         /*}}}*/
 878 void TryToInstall::doAutoInstall() {                                    /*{{{*/
 879    for (APT::PackageSet::const_iterator P = doAutoInstallLater.begin();
 880          P != doAutoInstallLater.end(); ++P) {
 881       pkgDepCache::StateCache &State = (*Cache)[P];
 882       if (State.InstBroken() == false && State.InstPolicyBroken() == false)
 883          continue;
 884       Cache->GetDepCache()->MarkInstall(P, true);
 885    }
 886    doAutoInstallLater.clear();
 887 }
 888                                                                         /*}}}*/
 889 // TryToRemove - Mark a package for removal                             /*{{{*/
 890 void TryToRemove::operator() (pkgCache::VerIterator const &Ver)
 891 {
 892    pkgCache::PkgIterator Pkg = Ver.ParentPkg();
 893
 894    if (Fix != NULL)
 895    {
 896       Fix->Clear(Pkg);
 897       Fix->Protect(Pkg);
 898       Fix->Remove(Pkg);
 899    }
 900
 901    if ((Pkg->CurrentVer == 0 && PurgePkgs == false) ||
 902          (PurgePkgs == true && Pkg->CurrentState == pkgCache::State::NotInstalled))
 903    {
 904       pkgCache::GrpIterator Grp = Pkg.Group();
 905       pkgCache::PkgIterator P = Grp.PackageList();
 906       for (; P.end() != true; P = Grp.NextPkg(P))
 907       {
 908          if (P == Pkg)
 909             continue;
 910          if (P->CurrentVer != 0 || (PurgePkgs == true && P->CurrentState != pkgCache::State::NotInstalled))
 911          {
 912             // TRANSLATORS: Note, this is not an interactive question
 913             ioprintf(c1out,_("Package '%s' is not installed, so not removed. Did you mean '%s'?\n"),
 914                   Pkg.FullName(true).c_str(), P.FullName(true).c_str());
 915             break;
 916          }
 917       }
 918       if (P.end() == true)
 919          ioprintf(c1out,_("Package '%s' is not installed, so not removed\n"),Pkg.FullName(true).c_str());
 920
 921       // MarkInstall refuses to install packages on hold
 922       Pkg->SelectedState = pkgCache::State::Hold;
 923    }
 924    else
 925       Cache->GetDepCache()->MarkDelete(Pkg, PurgePkgs);
 926 }
 927                                                                         /*}}}*/