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    {
 524       _config->Set("APT::Get::AutomaticRemove", "true");
 525       fallback = MOD_REMOVE;
 526    }
 527
 528    std::list<APT::VersionSet::Modifier> mods;
 529    mods.push_back(APT::VersionSet::Modifier(MOD_INSTALL, "+",
 530                 APT::VersionSet::Modifier::POSTFIX, APT::CacheSetHelper::CANDIDATE));
 531    mods.push_back(APT::VersionSet::Modifier(MOD_REMOVE, "-",
 532                 APT::VersionSet::Modifier::POSTFIX, APT::CacheSetHelper::NEWEST));
 533    CacheSetHelperAPTGet helper(c0out);
 534    verset = APT::VersionSet::GroupedFromCommandLine(Cache,
 535                 CmdL.FileList + 1, mods, fallback, helper);
 536
 537    if (_error->PendingError() == true)
 538    {
 539       helper.showVirtualPackageErrors(Cache);
 540       return false;
 541    }
 542
 543
 544   TryToInstall InstallAction(Cache, Fix.get(), BrokenFix);
 545   TryToRemove RemoveAction(Cache, Fix.get());
 546
 547    // new scope for the ActionGroup
 548    {
 549       pkgDepCache::ActionGroup group(Cache);
 550       unsigned short const order[] = { MOD_REMOVE, MOD_INSTALL, 0 };
 551
 552       for (unsigned short i = 0; order[i] != 0; ++i)
 553       {
 554          if (order[i] == MOD_INSTALL)
 555             InstallAction = std::for_each(verset[MOD_INSTALL].begin(), verset[MOD_INSTALL].end(), InstallAction);
 556          else if (order[i] == MOD_REMOVE)
 557             RemoveAction = std::for_each(verset[MOD_REMOVE].begin(), verset[MOD_REMOVE].end(), RemoveAction);
 558       }
 559
 560       if (Fix != NULL && _config->FindB("APT::Get::AutoSolving", true) == true)
 561       {
 562          for (unsigned short i = 0; order[i] != 0; ++i)
 563          {
 564             if (order[i] != MOD_INSTALL)
 565                continue;
 566             InstallAction.propergateReleaseCandiateSwitching(helper.selectedByRelease, c0out);
 567             InstallAction.doAutoInstall();
 568          }
 569       }
 570
 571       if (_error->PendingError() == true)
 572       {
 573          return false;
 574       }
 575
 576       /* If we are in the Broken fixing mode we do not attempt to fix the
 577          problems. This is if the user invoked install without -f and gave
 578          packages */
 579       if (BrokenFix == true && Cache->BrokenCount() != 0)
 580       {
 581          c1out << _("You might want to run 'apt-get -f install' to correct these:") << std::endl;
 582          ShowBroken(c1out,Cache,false);
 583          return _error->Error(_("Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution)."));
 584       }
 585
 586       if (Fix != NULL)
 587       {
 588          // Call the scored problem resolver
 589          OpTextProgress Progress(*_config);
 590          bool const distUpgradeMode = strcmp(CmdL.FileList[0], "dist-upgrade") == 0 || strcmp(CmdL.FileList[0], "full-upgrade") == 0;
 591
 592          bool resolver_fail = false;
 593          if (distUpgradeMode == true || UpgradeMode != APT::Upgrade::ALLOW_EVERYTHING)
 594             resolver_fail = APT::Upgrade::Upgrade(Cache, UpgradeMode, &Progress);
 595          else
 596             resolver_fail = Fix->Resolve(true, &Progress);
 597
 598          if (resolver_fail == false && Cache->BrokenCount() == 0)
 599             return false;
 600       }
 601
 602       // Now we check the state of the packages,
 603       if (Cache->BrokenCount() != 0)
 604       {
 605          c1out <<
 606             _("Some packages could not be installed. This may mean that you have\n"
 607               "requested an impossible situation or if you are using the unstable\n"
 608               "distribution that some required packages have not yet been created\n"
 609               "or been moved out of Incoming.") << std::endl;
 610          /*
 611          if (Packages == 1)
 612          {
 613             c1out << std::endl;
 614             c1out <<
 615                _("Since you only requested a single operation it is extremely likely that\n"
 616                  "the package is simply not installable and a bug report against\n"
 617                  "that package should be filed.") << std::endl;
 618          }
 619          */
 620
 621          c1out << _("The following information may help to resolve the situation:") << std::endl;
 622          c1out << std::endl;
 623          ShowBroken(c1out,Cache,false);
 624          if (_error->PendingError() == true)
 625             return false;
 626          else
 627             return _error->Error(_("Broken packages"));
 628       }
 629    }
 630    if (!DoAutomaticRemove(Cache))
 631       return false;
 632
 633    // if nothing changed in the cache, but only the automark information
 634    // we write the StateFile here, otherwise it will be written in
 635    // cache.commit()
 636    if (InstallAction.AutoMarkChanged > 0 &&
 637        Cache->DelCount() == 0 && Cache->InstCount() == 0 &&
 638        Cache->BadCount() == 0 &&
 639        _config->FindB("APT::Get::Simulate",false) == false)
 640       Cache->writeStateFile(NULL);
 641
 642    return true;
 643 }
 644                                                                         /*}}}*/
 645 // DoInstall - Install packages from the command line                   /*{{{*/
 646 // ---------------------------------------------------------------------
 647 /* Install named packages */
 648 struct PkgIsExtraInstalled {
 649    pkgCacheFile * const Cache;
 650    APT::VersionSet const * const verset;
 651    PkgIsExtraInstalled(pkgCacheFile * const Cache, APT::VersionSet const * const Container) : Cache(Cache), verset(Container) {}
 652    bool operator() (pkgCache::PkgIterator const Pkg)
 653    {
 654         if ((*Cache)[Pkg].Install() == false)
 655            return false;
 656         pkgCache::VerIterator const Cand = (*Cache)[Pkg].CandidateVerIter(*Cache);
 657         return verset->find(Cand) == verset->end();
 658    }
 659 };
 660 bool DoInstall(CommandLine &CmdL)
 661 {
 662    CacheFile Cache;
 663    // first check for local pkgs and add them to the cache
 664    for (const char **I = CmdL.FileList; *I != 0; I++)
 665    {
 666       if(FileExists(*I) && flExtension(*I) == "deb")
 667          Cache.GetSourceList()->AddVolatileFile(new debDebPkgFileIndex(*I));
 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                                                                         /*}}}*/