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 #include <apt-pkg/debindexfile.h>
  25
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <algorithm>
  29 #include <iostream>
  30 #include <set>
  31 #include <vector>
  32 #include <map>
  33
  34 #include <apt-private/acqprogress.h>
  35 #include <apt-private/private-install.h>
  36 #include <apt-private/private-cachefile.h>
  37 #include <apt-private/private-cacheset.h>
  38 #include <apt-private/private-download.h>
  39 #include <apt-private/private-output.h>
  40
  41 #include <apti18n.h>
  42                                                                         /*}}}*/
  43 class pkgSourceList;
  44
  45 // InstallPackages - Actually download and install the packages         /*{{{*/
  46 // ---------------------------------------------------------------------
  47 /* This displays the informative messages describing what is going to
  48    happen and then calls the download routines */
  49 bool InstallPackages(CacheFile &Cache,bool ShwKept,bool Ask, bool Safety)
  50 {
  51    if (_config->FindB("APT::Get::Purge",false) == true)
  52    {
  53       pkgCache::PkgIterator I = Cache->PkgBegin();
  54       for (; I.end() == false; ++I)
  55       {
  56          if (I.Purge() == false && Cache[I].Mode == pkgDepCache::ModeDelete)
  57             Cache->MarkDelete(I,true);
  58       }
  59    }
  60
  61    bool Hold = false;
  62    bool Downgrade = false;
  63    bool Essential = false;
  64
  65    // Show all the various warning indicators
  66    ShowDel(c1out,Cache);
  67    ShowNew(c1out,Cache);
  68    if (ShwKept == true)
  69       ShowKept(c1out,Cache);
  70    Hold = !ShowHold(c1out,Cache);
  71    if (_config->FindB("APT::Get::Show-Upgraded",true) == true)
  72       ShowUpgraded(c1out,Cache);
  73    Downgrade = !ShowDowngraded(c1out,Cache);
  74
  75    if (_config->FindB("APT::Get::Download-Only",false) == false)
  76         Essential = !ShowEssential(c1out,Cache);
  77
  78    // All kinds of failures
  79    bool Fail = (Essential || Downgrade || Hold);
  80
  81    Stats(c1out,Cache);
  82
  83    // Sanity check
  84    if (Cache->BrokenCount() != 0)
  85    {
  86       ShowBroken(c1out,Cache,false);
  87       return _error->Error(_("Internal error, InstallPackages was called with broken packages!"));
  88    }
  89
  90    if (Cache->DelCount() == 0 && Cache->InstCount() == 0 &&
  91        Cache->BadCount() == 0)
  92       return true;
  93
  94    // No remove flag
  95    if (Cache->DelCount() != 0 && _config->FindB("APT::Get::Remove",true) == false)
  96       return _error->Error(_("Packages need to be removed but remove is disabled."));
  97
  98    // Fail safe check
  99    if (_config->FindI("quiet",0) >= 2 ||
 100        _config->FindB("APT::Get::Assume-Yes",false) == true)
 101    {
 102       if (_config->FindB("APT::Get::Force-Yes",false) == true) {
 103          _error->Warning(_("--force-yes is deprecated, use one of the options starting with --allow instead."));
 104       }
 105
 106       if (Fail == true && _config->FindB("APT::Get::Force-Yes",false) == false) {
 107          if (Essential == true && _config->FindB("APT::Get::allow-remove-essential", false) == false)
 108             return _error->Error(_("Essential packages were removed and -y was used without --allow-remove-essential."));
 109          if (Downgrade == true && _config->FindB("APT::Get::allow-downgrades", false) == false)
 110             return _error->Error(_("Packages were downgraded and -y was used without --allow-downgrades."));
 111          if (Hold == true && _config->FindB("APT::Get::allow-change-held-packages", false) == false)
 112             return _error->Error(_("Held packages were changed and -y was used without --allow-change-held-packages."));
 113       }
 114    }
 115
 116    // Run the simulator ..
 117    if (_config->FindB("APT::Get::Simulate") == true)
 118    {
 119       pkgSimulate PM(Cache);
 120
 121       APT::Progress::PackageManager *progress = APT::Progress::PackageManagerProgressFactory();
 122       pkgPackageManager::OrderResult Res = PM.DoInstall(progress);
 123       delete progress;
 124
 125       if (Res == pkgPackageManager::Failed)
 126          return false;
 127       if (Res != pkgPackageManager::Completed)
 128          return _error->Error(_("Internal error, Ordering didn't finish"));
 129       return true;
 130    }
 131
 132    // Create the text record parser
 133    pkgRecords Recs(Cache);
 134    if (_error->PendingError() == true)
 135       return false;
 136
 137    // Create the download object
 138    AcqTextStatus Stat(std::cout, ScreenWidth,_config->FindI("quiet",0));
 139    pkgAcquire Fetcher(&Stat);
 140    if (_config->FindB("APT::Get::Print-URIs", false) == true)
 141    {
 142       // force a hashsum for compatibility reasons
 143       _config->CndSet("Acquire::ForceHash", "md5sum");
 144    }
 145    else if (Fetcher.GetLock(_config->FindDir("Dir::Cache::Archives")) == false)
 146       return false;
 147
 148    // Read the source list
 149    if (Cache.BuildSourceList() == false)
 150       return false;
 151    pkgSourceList *List = Cache.GetSourceList();
 152
 153    // Create the package manager and prepare to download
 154    std::unique_ptr<pkgPackageManager> PM(_system->CreatePM(Cache));
 155    if (PM->GetArchives(&Fetcher,List,&Recs) == false ||
 156        _error->PendingError() == true)
 157       return false;
 158
 159    // Display statistics
 160    unsigned long long FetchBytes = Fetcher.FetchNeeded();
 161    unsigned long long FetchPBytes = Fetcher.PartialPresent();
 162    unsigned long long DebBytes = Fetcher.TotalNeeded();
 163    if (DebBytes != Cache->DebSize())
 164    {
 165       c0out << DebBytes << ',' << Cache->DebSize() << std::endl;
 166       c0out << _("How odd... The sizes didn't match, email apt@packages.debian.org") << std::endl;
 167    }
 168
 169    // Number of bytes
 170    if (DebBytes != FetchBytes)
 171       //TRANSLATOR: The required space between number and unit is already included
 172       // in the replacement strings, so %sB will be correctly translate in e.g. 1,5 MB
 173       ioprintf(c1out,_("Need to get %sB/%sB of archives.\n"),
 174                SizeToStr(FetchBytes).c_str(),SizeToStr(DebBytes).c_str());
 175    else if (DebBytes != 0)
 176       //TRANSLATOR: The required space between number and unit is already included
 177       // in the replacement string, so %sB will be correctly translate in e.g. 1,5 MB
 178       ioprintf(c1out,_("Need to get %sB of archives.\n"),
 179                SizeToStr(DebBytes).c_str());
 180
 181    // Size delta
 182    if (Cache->UsrSize() >= 0)
 183       //TRANSLATOR: The required space between number and unit is already included
 184       // in the replacement string, so %sB will be correctly translate in e.g. 1,5 MB
 185       ioprintf(c1out,_("After this operation, %sB of additional disk space will be used.\n"),
 186                SizeToStr(Cache->UsrSize()).c_str());
 187    else
 188       //TRANSLATOR: The required space between number and unit is already included
 189       // in the replacement string, so %sB will be correctly translate in e.g. 1,5 MB
 190       ioprintf(c1out,_("After this operation, %sB disk space will be freed.\n"),
 191                SizeToStr(-1*Cache->UsrSize()).c_str());
 192
 193    if (_error->PendingError() == true)
 194       return false;
 195
 196    if (CheckFreeSpaceBeforeDownload(_config->FindDir("Dir::Cache::Archives"), (FetchBytes - FetchPBytes)) == false)
 197       return false;
 198
 199    if (Essential == true && Safety == true && _config->FindB("APT::Get::allow-remove-essential", false) == false)
 200    {
 201       if (_config->FindB("APT::Get::Trivial-Only",false) == true)
 202          return _error->Error(_("Trivial Only specified but this is not a trivial operation."));
 203
 204       // TRANSLATOR: This string needs to be typed by the user as a confirmation, so be
 205       //             careful with hard to type or special characters (like non-breaking spaces)
 206       const char *Prompt = _("Yes, do as I say!");
 207       ioprintf(c2out,
 208                _("You are about to do something potentially harmful.\n"
 209                  "To continue type in the phrase '%s'\n"
 210                  " ?] "),Prompt);
 211       c2out << std::flush;
 212       if (AnalPrompt(Prompt) == false)
 213       {
 214          c2out << _("Abort.") << std::endl;
 215          exit(1);
 216       }
 217    }
 218    else
 219    {
 220       // Prompt to continue
 221       if (Ask == true || Fail == true)
 222       {
 223          if (_config->FindB("APT::Get::Trivial-Only",false) == true)
 224             return _error->Error(_("Trivial Only specified but this is not a trivial operation."));
 225
 226          if (_config->FindI("quiet",0) < 2 &&
 227              _config->FindB("APT::Get::Assume-Yes",false) == false)
 228          {
 229             c2out << _("Do you want to continue?") << std::flush;
 230             if (YnPrompt() == false)
 231             {
 232                c2out << _("Abort.") << std::endl;
 233                exit(1);
 234             }
 235          }
 236       }
 237    }
 238
 239    // Just print out the uris an exit if the --print-uris flag was used
 240    if (_config->FindB("APT::Get::Print-URIs") == true)
 241    {
 242       pkgAcquire::UriIterator I = Fetcher.UriBegin();
 243       for (; I != Fetcher.UriEnd(); ++I)
 244          std::cout << '\'' << I->URI << "' " << flNotDir(I->Owner->DestFile) << ' ' <<
 245                I->Owner->FileSize << ' ' << I->Owner->HashSum() << std::endl;
 246       return true;
 247    }
 248
 249    if (!CheckAuth(Fetcher, true))
 250       return false;
 251
 252    /* Unlock the dpkg lock if we are not going to be doing an install
 253       after. */
 254    if (_config->FindB("APT::Get::Download-Only",false) == true)
 255       _system->UnLock();
 256
 257    // Run it
 258    while (1)
 259    {
 260       bool Transient = false;
 261       if (_config->FindB("APT::Get::Download",true) == false)
 262       {
 263          for (pkgAcquire::ItemIterator I = Fetcher.ItemsBegin(); I < Fetcher.ItemsEnd();)
 264          {
 265             if ((*I)->Local == true)
 266             {
 267                ++I;
 268                continue;
 269             }
 270
 271             // Close the item and check if it was found in cache
 272             (*I)->Finished();
 273             if ((*I)->Complete == false)
 274                Transient = true;
 275
 276             // Clear it out of the fetch list
 277             delete *I;
 278             I = Fetcher.ItemsBegin();
 279          }
 280       }
 281
 282       bool Failed = false;
 283       if (AcquireRun(Fetcher, 0, &Failed, &Transient) == false)
 284          return false;
 285
 286       /* If we are in no download mode and missing files and there were
 287          'failures' then the user must specify -m. Furthermore, there
 288          is no such thing as a transient error in no-download mode! */
 289       if (Transient == true &&
 290           _config->FindB("APT::Get::Download",true) == false)
 291       {
 292          Transient = false;
 293          Failed = true;
 294       }
 295
 296       if (_config->FindB("APT::Get::Download-Only",false) == true)
 297       {
 298          if (Failed == true && _config->FindB("APT::Get::Fix-Missing",false) == false)
 299             return _error->Error(_("Some files failed to download"));
 300          c1out << _("Download complete and in download only mode") << std::endl;
 301          return true;
 302       }
 303
 304       if (Failed == true && _config->FindB("APT::Get::Fix-Missing",false) == false)
 305       {
 306          return _error->Error(_("Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?"));
 307       }
 308
 309       if (Transient == true && Failed == true)
 310          return _error->Error(_("--fix-missing and media swapping is not currently supported"));
 311
 312       // Try to deal with missing package files
 313       if (Failed == true && PM->FixMissing() == false)
 314       {
 315          c2out << _("Unable to correct missing packages.") << std::endl;
 316          return _error->Error(_("Aborting install."));
 317       }
 318
 319       _system->UnLock();
 320
 321       APT::Progress::PackageManager *progress = APT::Progress::PackageManagerProgressFactory();
 322       pkgPackageManager::OrderResult Res = PM->DoInstall(progress);
 323       delete progress;
 324
 325       if (Res == pkgPackageManager::Failed || _error->PendingError() == true)
 326          return false;
 327       if (Res == pkgPackageManager::Completed)
 328          break;
 329
 330       // Reload the fetcher object and loop again for media swapping
 331       Fetcher.Shutdown();
 332       if (PM->GetArchives(&Fetcher,List,&Recs) == false)
 333          return false;
 334
 335       _system->Lock();
 336    }
 337
 338    std::set<std::string> const disappearedPkgs = PM->GetDisappearedPackages();
 339    if (disappearedPkgs.empty() == false)
 340    {
 341       ShowList(c1out, P_("The following package disappeared from your system as\n"
 342                "all files have been overwritten by other packages:",
 343                "The following packages disappeared from your system as\n"
 344                "all files have been overwritten by other packages:", disappearedPkgs.size()), disappearedPkgs,
 345             [](std::string const &Pkg) { return Pkg.empty() == false; },
 346             [](std::string const &Pkg) { return Pkg; },
 347             [](std::string const &) { return std::string(); });
 348       c0out << _("Note: This is done automatically and on purpose by dpkg.") << std::endl;
 349    }
 350
 351    return true;
 352 }
 353                                                                         /*}}}*/
 354 // DoAutomaticRemove - Remove all automatic unused packages             /*{{{*/
 355 // ---------------------------------------------------------------------
 356 /* Remove unused automatic packages */
 357 static bool DoAutomaticRemove(CacheFile &Cache)
 358 {
 359    bool Debug = _config->FindI("Debug::pkgAutoRemove",false);
 360    bool doAutoRemove = _config->FindB("APT::Get::AutomaticRemove", false);
 361    bool hideAutoRemove = _config->FindB("APT::Get::HideAutoRemove");
 362
 363    pkgDepCache::ActionGroup group(*Cache);
 364    if(Debug)
 365       std::cout << "DoAutomaticRemove()" << std::endl;
 366
 367    if (doAutoRemove == true &&
 368         _config->FindB("APT::Get::Remove",true) == false)
 369    {
 370       c1out << _("We are not supposed to delete stuff, can't start "
 371                  "AutoRemover") << std::endl;
 372       return false;
 373    }
 374
 375    bool purgePkgs = _config->FindB("APT::Get::Purge", false);
 376    bool smallList = (hideAutoRemove == false &&
 377                 strcasecmp(_config->Find("APT::Get::HideAutoRemove","").c_str(),"small") == 0);
 378
 379    unsigned long autoRemoveCount = 0;
 380    APT::PackageSet tooMuch;
 381    SortedPackageUniverse Universe(Cache);
 382    // look over the cache to see what can be removed
 383    for (auto const &Pkg: Universe)
 384    {
 385       if (Cache[Pkg].Garbage)
 386       {
 387          if(Pkg.CurrentVer() != 0 || Cache[Pkg].Install())
 388             if(Debug)
 389                std::cout << "We could delete %s" <<  Pkg.FullName(true).c_str() << std::endl;
 390
 391          if (doAutoRemove)
 392          {
 393             if(Pkg.CurrentVer() != 0 &&
 394                Pkg->CurrentState != pkgCache::State::ConfigFiles)
 395                Cache->MarkDelete(Pkg, purgePkgs, 0, false);
 396             else
 397                Cache->MarkKeep(Pkg, false, false);
 398          }
 399          else
 400          {
 401             // if the package is a new install and already garbage we don't need to
 402             // install it in the first place, so nuke it instead of show it
 403             if (Cache[Pkg].Install() == true && Pkg.CurrentVer() == 0)
 404             {
 405                if (Pkg.CandVersion() != 0)
 406                   tooMuch.insert(Pkg);
 407                Cache->MarkDelete(Pkg, false, 0, false);
 408             }
 409             // only show stuff in the list that is not yet marked for removal
 410             else if(hideAutoRemove == false && Cache[Pkg].Delete() == false)
 411                ++autoRemoveCount;
 412          }
 413       }
 414    }
 415
 416    // we could have removed a new dependency of a garbage package,
 417    // so check if a reverse depends is broken and if so install it again.
 418    if (tooMuch.empty() == false && (Cache->BrokenCount() != 0 || Cache->PolicyBrokenCount() != 0))
 419    {
 420       bool Changed;
 421       do {
 422          Changed = false;
 423          for (APT::PackageSet::iterator Pkg = tooMuch.begin();
 424               Pkg != tooMuch.end(); ++Pkg)
 425          {
 426             APT::PackageSet too;
 427             too.insert(*Pkg);
 428             for (pkgCache::PrvIterator Prv = Cache[Pkg].CandidateVerIter(Cache).ProvidesList();
 429                  Prv.end() == false; ++Prv)
 430                too.insert(Prv.ParentPkg());
 431             for (APT::PackageSet::const_iterator P = too.begin(); P != too.end(); ++P)
 432             {
 433                for (pkgCache::DepIterator R = P.RevDependsList();
 434                     R.end() == false; ++R)
 435                {
 436                   if (R.IsNegative() == true ||
 437                       Cache->IsImportantDep(R) == false)
 438                      continue;
 439                  pkgCache::PkgIterator N = R.ParentPkg();
 440                  if (N.end() == true || (N->CurrentVer == 0 && (*Cache)[N].Install() == false))
 441                     continue;
 442                  if (Debug == true)
 443                     std::clog << "Save " << Pkg << " as another installed garbage package depends on it" << std::endl;
 444                  Cache->MarkInstall(Pkg, false, 0, false);
 445                  if (hideAutoRemove == false)
 446                     ++autoRemoveCount;
 447                  tooMuch.erase(Pkg);
 448                  Changed = true;
 449                  break;
 450                }
 451                if (Changed == true)
 452                   break;
 453             }
 454             if (Changed == true)
 455                break;
 456          }
 457       } while (Changed == true);
 458    }
 459
 460    // Now see if we had destroyed anything (if we had done anything)
 461    if (Cache->BrokenCount() != 0)
 462    {
 463       c1out << _("Hmm, seems like the AutoRemover destroyed something which really\n"
 464                  "shouldn't happen. Please file a bug report against apt.") << std::endl;
 465       c1out << std::endl;
 466       c1out << _("The following information may help to resolve the situation:") << std::endl;
 467       c1out << std::endl;
 468       ShowBroken(c1out,Cache,false);
 469
 470       return _error->Error(_("Internal Error, AutoRemover broke stuff"));
 471    }
 472
 473    // if we don't remove them, we should show them!
 474    if (doAutoRemove == false && autoRemoveCount != 0)
 475    {
 476       if (smallList == false)
 477       {
 478          SortedPackageUniverse Universe(Cache);
 479          ShowList(c1out, P_("The following package was automatically installed and is no longer required:",
 480                   "The following packages were automatically installed and are no longer required:",
 481                   autoRemoveCount), Universe,
 482                [&Cache](pkgCache::PkgIterator const &Pkg) { return (*Cache)[Pkg].Garbage == true && (*Cache)[Pkg].Delete() == false; },
 483                &PrettyFullName, CandidateVersion(&Cache));
 484       }
 485       else
 486          ioprintf(c1out, P_("%lu package was automatically installed and is no longer required.\n",
 487                   "%lu packages were automatically installed and are no longer required.\n", autoRemoveCount), autoRemoveCount);
 488       c1out << P_("Use 'apt-get autoremove' to remove it.", "Use 'apt-get autoremove' to remove them.", autoRemoveCount) << std::endl;
 489    }
 490    return true;
 491 }
 492                                                                         /*}}}*/
 493 // DoCacheManipulationFromCommandLine                                   /*{{{*/
 494 static const unsigned short MOD_REMOVE = 1;
 495 static const unsigned short MOD_INSTALL = 2;
 496
 497 bool DoCacheManipulationFromCommandLine(CommandLine &CmdL, CacheFile &Cache, int UpgradeMode)
 498 {
 499    std::map<unsigned short, APT::VersionSet> verset;
 500    return DoCacheManipulationFromCommandLine(CmdL, Cache, verset, UpgradeMode);
 501 }
 502 bool DoCacheManipulationFromCommandLine(CommandLine &CmdL, CacheFile &Cache,
 503                                         std::map<unsigned short, APT::VersionSet> &verset, int UpgradeMode)
 504 {
 505    // Enter the special broken fixing mode if the user specified arguments
 506    bool BrokenFix = false;
 507    if (Cache->BrokenCount() != 0)
 508       BrokenFix = true;
 509
 510    std::unique_ptr<pkgProblemResolver> Fix(nullptr);
 511    if (_config->FindB("APT::Get::CallResolver", true) == true)
 512       Fix.reset(new pkgProblemResolver(Cache));
 513
 514    unsigned short fallback = MOD_INSTALL;
 515    if (strcasecmp(CmdL.FileList[0],"remove") == 0)
 516       fallback = MOD_REMOVE;
 517    else if (strcasecmp(CmdL.FileList[0], "purge") == 0)
 518    {
 519       _config->Set("APT::Get::Purge", true);
 520       fallback = MOD_REMOVE;
 521    }
 522    else if (strcasecmp(CmdL.FileList[0], "autoremove") == 0 ||
 523             strcasecmp(CmdL.FileList[0], "auto-remove") == 0)
 524    {
 525       _config->Set("APT::Get::AutomaticRemove", "true");
 526       fallback = MOD_REMOVE;
 527    }
 528
 529    std::list<APT::VersionSet::Modifier> mods;
 530    mods.push_back(APT::VersionSet::Modifier(MOD_INSTALL, "+",
 531                 APT::VersionSet::Modifier::POSTFIX, APT::CacheSetHelper::CANDIDATE));
 532    mods.push_back(APT::VersionSet::Modifier(MOD_REMOVE, "-",
 533                 APT::VersionSet::Modifier::POSTFIX, APT::CacheSetHelper::NEWEST));
 534    CacheSetHelperAPTGet helper(c0out);
 535    verset = APT::VersionSet::GroupedFromCommandLine(Cache,
 536                 CmdL.FileList + 1, mods, fallback, helper);
 537
 538    if (_error->PendingError() == true)
 539    {
 540       helper.showVirtualPackageErrors(Cache);
 541       return false;
 542    }
 543
 544
 545   TryToInstall InstallAction(Cache, Fix.get(), BrokenFix);
 546   TryToRemove RemoveAction(Cache, Fix.get());
 547
 548    // new scope for the ActionGroup
 549    {
 550       pkgDepCache::ActionGroup group(Cache);
 551       unsigned short const order[] = { MOD_REMOVE, MOD_INSTALL, 0 };
 552
 553       for (unsigned short i = 0; order[i] != 0; ++i)
 554       {
 555          if (order[i] == MOD_INSTALL)
 556             InstallAction = std::for_each(verset[MOD_INSTALL].begin(), verset[MOD_INSTALL].end(), InstallAction);
 557          else if (order[i] == MOD_REMOVE)
 558             RemoveAction = std::for_each(verset[MOD_REMOVE].begin(), verset[MOD_REMOVE].end(), RemoveAction);
 559       }
 560
 561       if (Fix != NULL && _config->FindB("APT::Get::AutoSolving", true) == true)
 562       {
 563          for (unsigned short i = 0; order[i] != 0; ++i)
 564          {
 565             if (order[i] != MOD_INSTALL)
 566                continue;
 567             InstallAction.propergateReleaseCandiateSwitching(helper.selectedByRelease, c0out);
 568             InstallAction.doAutoInstall();
 569          }
 570       }
 571
 572       if (_error->PendingError() == true)
 573       {
 574          return false;
 575       }
 576
 577       /* If we are in the Broken fixing mode we do not attempt to fix the
 578          problems. This is if the user invoked install without -f and gave
 579          packages */
 580       if (BrokenFix == true && Cache->BrokenCount() != 0)
 581       {
 582          c1out << _("You might want to run 'apt-get -f install' to correct these:") << std::endl;
 583          ShowBroken(c1out,Cache,false);
 584          return _error->Error(_("Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution)."));
 585       }
 586
 587       if (Fix != NULL)
 588       {
 589          // Call the scored problem resolver
 590          OpTextProgress Progress(*_config);
 591          bool const distUpgradeMode = strcmp(CmdL.FileList[0], "dist-upgrade") == 0 || strcmp(CmdL.FileList[0], "full-upgrade") == 0;
 592
 593          bool resolver_fail = false;
 594          if (distUpgradeMode == true || UpgradeMode != APT::Upgrade::ALLOW_EVERYTHING)
 595             resolver_fail = APT::Upgrade::Upgrade(Cache, UpgradeMode, &Progress);
 596          else
 597             resolver_fail = Fix->Resolve(true, &Progress);
 598
 599          if (resolver_fail == false && Cache->BrokenCount() == 0)
 600             return false;
 601       }
 602
 603       // Now we check the state of the packages,
 604       if (Cache->BrokenCount() != 0)
 605       {
 606          c1out <<
 607             _("Some packages could not be installed. This may mean that you have\n"
 608               "requested an impossible situation or if you are using the unstable\n"
 609               "distribution that some required packages have not yet been created\n"
 610               "or been moved out of Incoming.") << std::endl;
 611          /*
 612          if (Packages == 1)
 613          {
 614             c1out << std::endl;
 615             c1out <<
 616                _("Since you only requested a single operation it is extremely likely that\n"
 617                  "the package is simply not installable and a bug report against\n"
 618                  "that package should be filed.") << std::endl;
 619          }
 620          */
 621
 622          c1out << _("The following information may help to resolve the situation:") << std::endl;
 623          c1out << std::endl;
 624          ShowBroken(c1out,Cache,false);
 625          if (_error->PendingError() == true)
 626             return false;
 627          else
 628             return _error->Error(_("Broken packages"));
 629       }
 630    }
 631    if (!DoAutomaticRemove(Cache))
 632       return false;
 633
 634    // if nothing changed in the cache, but only the automark information
 635    // we write the StateFile here, otherwise it will be written in
 636    // cache.commit()
 637    if (InstallAction.AutoMarkChanged > 0 &&
 638        Cache->DelCount() == 0 && Cache->InstCount() == 0 &&
 639        Cache->BadCount() == 0 &&
 640        _config->FindB("APT::Get::Simulate",false) == false)
 641       Cache->writeStateFile(NULL);
 642
 643    return true;
 644 }
 645                                                                         /*}}}*/
 646 // DoInstall - Install packages from the command line                   /*{{{*/
 647 // ---------------------------------------------------------------------
 648 /* Install named packages */
 649 struct PkgIsExtraInstalled {
 650    pkgCacheFile * const Cache;
 651    APT::VersionSet const * const verset;
 652    PkgIsExtraInstalled(pkgCacheFile * const Cache, APT::VersionSet const * const Container) : Cache(Cache), verset(Container) {}
 653    bool operator() (pkgCache::PkgIterator const Pkg)
 654    {
 655         if ((*Cache)[Pkg].Install() == false)
 656            return false;
 657         pkgCache::VerIterator const Cand = (*Cache)[Pkg].CandidateVerIter(*Cache);
 658         return verset->find(Cand) == verset->end();
 659    }
 660 };
 661 bool DoInstall(CommandLine &CmdL)
 662 {
 663    CacheFile Cache;
 664    // first check for local pkgs and add them to the cache
 665    for (const char **I = CmdL.FileList; *I != 0; I++)
 666    {
 667       if(FileExists(*I) && flExtension(*I) == "deb")
 668          Cache.GetSourceList()->AddVolatileFile(new debDebPkgFileIndex(*I));
 669    }
 670
 671    // then open the cache
 672    if (Cache.OpenForInstall() == false ||
 673        Cache.CheckDeps(CmdL.FileSize() != 1) == false)
 674       return false;
 675
 676    std::map<unsigned short, APT::VersionSet> verset;
 677
 678    if(!DoCacheManipulationFromCommandLine(CmdL, Cache, verset, 0))
 679       return false;
 680
 681    /* Print out a list of packages that are going to be installed extra
 682       to what the user asked */
 683    SortedPackageUniverse Universe(Cache);
 684    if (Cache->InstCount() != verset[MOD_INSTALL].size())
 685       ShowList(c1out, _("The following extra packages will be installed:"), Universe,
 686             PkgIsExtraInstalled(&Cache, &verset[MOD_INSTALL]),
 687             &PrettyFullName, CandidateVersion(&Cache));
 688
 689    /* Print out a list of suggested and recommended packages */
 690    {
 691       std::list<std::string> Recommends, Suggests, SingleRecommends, SingleSuggests;
 692       for (auto const &Pkg: Universe)
 693       {
 694          /* Just look at the ones we want to install */
 695          if ((*Cache)[Pkg].Install() == false)
 696            continue;
 697
 698          // get the recommends/suggests for the candidate ver
 699          pkgCache::VerIterator CV = (*Cache)[Pkg].CandidateVerIter(*Cache);
 700          for (pkgCache::DepIterator D = CV.DependsList(); D.end() == false; )
 701          {
 702             pkgCache::DepIterator Start;
 703             pkgCache::DepIterator End;
 704             D.GlobOr(Start,End); // advances D
 705             if (Start->Type != pkgCache::Dep::Recommends && Start->Type != pkgCache::Dep::Suggests)
 706                continue;
 707
 708             {
 709                // Skip if we already saw this
 710                std::string target;
 711                for (pkgCache::DepIterator I = Start; I != D; ++I)
 712                {
 713                   if (target.empty() == false)
 714                      target.append(" | ");
 715                   target.append(I.TargetPkg().FullName(true));
 716                }
 717                std::list<std::string> &Type = Start->Type == pkgCache::Dep::Recommends ? SingleRecommends : SingleSuggests;
 718                if (std::find(Type.begin(), Type.end(), target) != Type.end())
 719                   continue;
 720                Type.push_back(target);
 721             }
 722
 723             std::list<std::string> OrList;
 724             bool foundInstalledInOrGroup = false;
 725             for (pkgCache::DepIterator I = Start; I != D; ++I)
 726             {
 727                {
 728                   // satisfying package is installed and not marked for deletion
 729                   APT::VersionList installed = APT::VersionList::FromDependency(Cache, I, APT::CacheSetHelper::INSTALLED);
 730                   if (std::find_if(installed.begin(), installed.end(),
 731                            [&Cache](pkgCache::VerIterator const &Ver) { return Cache[Ver.ParentPkg()].Delete() == false; }) != installed.end())
 732                   {
 733                      foundInstalledInOrGroup = true;
 734                      break;
 735                   }
 736                }
 737
 738                {
 739                   // satisfying package is upgraded to/new install
 740                   APT::VersionList upgrades = APT::VersionList::FromDependency(Cache, I, APT::CacheSetHelper::CANDIDATE);
 741                   if (std::find_if(upgrades.begin(), upgrades.end(),
 742                            [&Cache](pkgCache::VerIterator const &Ver) { return Cache[Ver.ParentPkg()].Upgrade(); }) != upgrades.end())
 743                   {
 744                      foundInstalledInOrGroup = true;
 745                      break;
 746                   }
 747                }
 748
 749                if (OrList.empty())
 750                   OrList.push_back(I.TargetPkg().FullName(true));
 751                else
 752                   OrList.push_back("| " + I.TargetPkg().FullName(true));
 753             }
 754
 755             if(foundInstalledInOrGroup == false)
 756             {
 757                std::list<std::string> &Type = Start->Type == pkgCache::Dep::Recommends ? Recommends : Suggests;
 758                std::move(OrList.begin(), OrList.end(), std::back_inserter(Type));
 759             }
 760          }
 761       }
 762       auto always_true = [](std::string const&) { return true; };
 763       auto string_ident = [](std::string const&str) { return str; };
 764       auto verbose_show_candidate =
 765          [&Cache](std::string str)
 766          {
 767             if (APT::String::Startswith(str, "| "))
 768                str.erase(0, 2);
 769             pkgCache::PkgIterator const Pkg = Cache->FindPkg(str);
 770             if (Pkg.end() == true)
 771                return "";
 772             return (*Cache)[Pkg].CandVersion;
 773          };
 774       ShowList(c1out,_("Suggested packages:"), Suggests,
 775             always_true, string_ident, verbose_show_candidate);
 776       ShowList(c1out,_("Recommended packages:"), Recommends,
 777             always_true, string_ident, verbose_show_candidate);
 778    }
 779
 780    // See if we need to prompt
 781    // FIXME: check if really the packages in the set are going to be installed
 782    if (Cache->InstCount() == verset[MOD_INSTALL].size() && Cache->DelCount() == 0)
 783       return InstallPackages(Cache,false,false);
 784
 785    return InstallPackages(Cache,false);
 786 }
 787                                                                         /*}}}*/
 788
 789 // TryToInstall - Mark a package for installation                       /*{{{*/
 790 void TryToInstall::operator() (pkgCache::VerIterator const &Ver) {
 791    pkgCache::PkgIterator Pkg = Ver.ParentPkg();
 792
 793    Cache->GetDepCache()->SetCandidateVersion(Ver);
 794    pkgDepCache::StateCache &State = (*Cache)[Pkg];
 795
 796    // Handle the no-upgrade case
 797    if (_config->FindB("APT::Get::upgrade",true) == false && Pkg->CurrentVer != 0)
 798       ioprintf(c1out,_("Skipping %s, it is already installed and upgrade is not set.\n"),
 799             Pkg.FullName(true).c_str());
 800    // Ignore request for install if package would be new
 801    else if (_config->FindB("APT::Get::Only-Upgrade", false) == true && Pkg->CurrentVer == 0)
 802       ioprintf(c1out,_("Skipping %s, it is not installed and only upgrades are requested.\n"),
 803             Pkg.FullName(true).c_str());
 804    else {
 805       if (Fix != NULL) {
 806          Fix->Clear(Pkg);
 807          Fix->Protect(Pkg);
 808       }
 809       Cache->GetDepCache()->MarkInstall(Pkg,false);
 810
 811       if (State.Install() == false) {
 812          if (_config->FindB("APT::Get::ReInstall",false) == true) {
 813             if (Pkg->CurrentVer == 0 || Pkg.CurrentVer().Downloadable() == false)
 814                ioprintf(c1out,_("Reinstallation of %s is not possible, it cannot be downloaded.\n"),
 815                      Pkg.FullName(true).c_str());
 816             else
 817                Cache->GetDepCache()->SetReInstall(Pkg, true);
 818          } else
 819             ioprintf(c1out,_("%s is already the newest version.\n"),
 820                   Pkg.FullName(true).c_str());
 821       }
 822
 823       // Install it with autoinstalling enabled (if we not respect the minial
 824       // required deps or the policy)
 825       if (FixBroken == false)
 826          doAutoInstallLater.insert(Pkg);
 827    }
 828
 829    // see if we need to fix the auto-mark flag
 830    // e.g. apt-get install foo
 831    // where foo is marked automatic
 832    if (State.Install() == false &&
 833          (State.Flags & pkgCache::Flag::Auto) &&
 834          _config->FindB("APT::Get::ReInstall",false) == false &&
 835          _config->FindB("APT::Get::Only-Upgrade",false) == false &&
 836          _config->FindB("APT::Get::Download-Only",false) == false)
 837    {
 838       ioprintf(c1out,_("%s set to manually installed.\n"),
 839             Pkg.FullName(true).c_str());
 840       Cache->GetDepCache()->MarkAuto(Pkg,false);
 841       AutoMarkChanged++;
 842    }
 843 }
 844                                                                         /*}}}*/
 845 bool TryToInstall::propergateReleaseCandiateSwitching(std::list<std::pair<pkgCache::VerIterator, std::string> > const &start, std::ostream &out)/*{{{*/
 846 {
 847    for (std::list<std::pair<pkgCache::VerIterator, std::string> >::const_iterator s = start.begin();
 848          s != start.end(); ++s)
 849       Cache->GetDepCache()->SetCandidateVersion(s->first);
 850
 851    bool Success = true;
 852    // the Changed list contains:
 853    //   first: "new version"
 854    //   second: "what-caused the change"
 855    std::list<std::pair<pkgCache::VerIterator, pkgCache::VerIterator> > Changed;
 856    for (std::list<std::pair<pkgCache::VerIterator, std::string> >::const_iterator s = start.begin();
 857          s != start.end(); ++s)
 858    {
 859       Changed.push_back(std::make_pair(s->first, pkgCache::VerIterator(*Cache)));
 860       // We continue here even if it failed to enhance the ShowBroken output
 861       Success &= Cache->GetDepCache()->SetCandidateRelease(s->first, s->second, Changed);
 862    }
 863    for (std::list<std::pair<pkgCache::VerIterator, pkgCache::VerIterator> >::const_iterator c = Changed.begin();
 864          c != Changed.end(); ++c)
 865    {
 866       if (c->second.end() == true)
 867          ioprintf(out, _("Selected version '%s' (%s) for '%s'\n"),
 868                c->first.VerStr(), c->first.RelStr().c_str(), c->first.ParentPkg().FullName(true).c_str());
 869       else if (c->first.ParentPkg()->Group != c->second.ParentPkg()->Group)
 870       {
 871          pkgCache::VerIterator V = (*Cache)[c->first.ParentPkg()].CandidateVerIter(*Cache);
 872          ioprintf(out, _("Selected version '%s' (%s) for '%s' because of '%s'\n"), V.VerStr(),
 873                V.RelStr().c_str(), V.ParentPkg().FullName(true).c_str(), c->second.ParentPkg().FullName(true).c_str());
 874       }
 875    }
 876    return Success;
 877 }
 878                                                                         /*}}}*/
 879 void TryToInstall::doAutoInstall() {                                    /*{{{*/
 880    for (APT::PackageSet::const_iterator P = doAutoInstallLater.begin();
 881          P != doAutoInstallLater.end(); ++P) {
 882       pkgDepCache::StateCache &State = (*Cache)[P];
 883       if (State.InstBroken() == false && State.InstPolicyBroken() == false)
 884          continue;
 885       Cache->GetDepCache()->MarkInstall(P, true);
 886    }
 887    doAutoInstallLater.clear();
 888 }
 889                                                                         /*}}}*/
 890 // TryToRemove - Mark a package for removal                             /*{{{*/
 891 void TryToRemove::operator() (pkgCache::VerIterator const &Ver)
 892 {
 893    pkgCache::PkgIterator Pkg = Ver.ParentPkg();
 894
 895    if (Fix != NULL)
 896    {
 897       Fix->Clear(Pkg);
 898       Fix->Protect(Pkg);
 899       Fix->Remove(Pkg);
 900    }
 901
 902    if ((Pkg->CurrentVer == 0 && PurgePkgs == false) ||
 903          (PurgePkgs == true && Pkg->CurrentState == pkgCache::State::NotInstalled))
 904    {
 905       pkgCache::GrpIterator Grp = Pkg.Group();
 906       pkgCache::PkgIterator P = Grp.PackageList();
 907       for (; P.end() != true; P = Grp.NextPkg(P))
 908       {
 909          if (P == Pkg)
 910             continue;
 911          if (P->CurrentVer != 0 || (PurgePkgs == true && P->CurrentState != pkgCache::State::NotInstalled))
 912          {
 913             // TRANSLATORS: Note, this is not an interactive question
 914             ioprintf(c1out,_("Package '%s' is not installed, so not removed. Did you mean '%s'?\n"),
 915                   Pkg.FullName(true).c_str(), P.FullName(true).c_str());
 916             break;
 917          }
 918       }
 919       if (P.end() == true)
 920          ioprintf(c1out,_("Package '%s' is not installed, so not removed\n"),Pkg.FullName(true).c_str());
 921
 922       // MarkInstall refuses to install packages on hold
 923       Pkg->SelectedState = pkgCache::State::Hold;
 924    }
 925    else
 926       Cache->GetDepCache()->MarkDelete(Pkg, PurgePkgs);
 927 }
 928                                                                         /*}}}*/