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 Hold = false;
  61    bool Downgrade = false;
  62    bool Essential = false;
  63
  64    // Show all the various warning indicators
  65    ShowDel(c1out,Cache);
  66    ShowNew(c1out,Cache);
  67    if (ShwKept == true)
  68       ShowKept(c1out,Cache);
  69    Hold = !ShowHold(c1out,Cache);
  70    if (_config->FindB("APT::Get::Show-Upgraded",true) == true)
  71       ShowUpgraded(c1out,Cache);
  72    Downgrade = !ShowDowngraded(c1out,Cache);
  73
  74    if (_config->FindB("APT::Get::Download-Only",false) == false)
  75         Essential = !ShowEssential(c1out,Cache);
  76
  77    // All kinds of failures
  78    bool Fail = (Essential || Downgrade || Hold);
  79
  80    Stats(c1out,Cache);
  81
  82    // Sanity check
  83    if (Cache->BrokenCount() != 0)
  84    {
  85       ShowBroken(c1out,Cache,false);
  86       return _error->Error(_("Internal error, InstallPackages was called with broken packages!"));
  87    }
  88
  89    if (Cache->DelCount() == 0 && Cache->InstCount() == 0 &&
  90        Cache->BadCount() == 0)
  91       return true;
  92
  93    // No remove flag
  94    if (Cache->DelCount() != 0 && _config->FindB("APT::Get::Remove",true) == false)
  95       return _error->Error(_("Packages need to be removed but remove is disabled."));
  96
  97    // Fail safe check
  98    if (_config->FindI("quiet",0) >= 2 ||
  99        _config->FindB("APT::Get::Assume-Yes",false) == true)
 100    {
 101       if (_config->FindB("APT::Get::Force-Yes",false) == true) {
 102          _error->Warning(_("--force-yes is deprecated, use one of the options starting with --allow instead."));
 103       }
 104
 105       if (Fail == true && _config->FindB("APT::Get::Force-Yes",false) == false) {
 106          if (Essential == true && _config->FindB("APT::Get::allow-remove-essential", false) == false)
 107             return _error->Error(_("Essential packages were removed and -y was used without --allow-remove-essential."));
 108          if (Downgrade == true && _config->FindB("APT::Get::allow-downgrades", false) == false)
 109             return _error->Error(_("Packages were downgraded and -y was used without --allow-downgrades."));
 110          if (Hold == true && _config->FindB("APT::Get::allow-change-held-packages", false) == false)
 111             return _error->Error(_("Held packages were changed and -y was used without --allow-change-held-packages."));
 112       }
 113    }
 114
 115    // Run the simulator ..
 116    if (_config->FindB("APT::Get::Simulate") == true)
 117    {
 118       pkgSimulate PM(Cache);
 119
 120       APT::Progress::PackageManager *progress = APT::Progress::PackageManagerProgressFactory();
 121       pkgPackageManager::OrderResult Res = PM.DoInstall(progress);
 122       delete progress;
 123
 124       if (Res == pkgPackageManager::Failed)
 125          return false;
 126       if (Res != pkgPackageManager::Completed)
 127          return _error->Error(_("Internal error, Ordering didn't finish"));
 128       return true;
 129    }
 130
 131    // Create the text record parser
 132    pkgRecords Recs(Cache);
 133    if (_error->PendingError() == true)
 134       return false;
 135
 136    // Create the download object
 137    aptAcquireWithTextStatus Fetcher;
 138    if (_config->FindB("APT::Get::Print-URIs", false) == true)
 139    {
 140       // force a hashsum for compatibility reasons
 141       _config->CndSet("Acquire::ForceHash", "md5sum");
 142    }
 143    else if (Fetcher.GetLock(_config->FindDir("Dir::Cache::Archives")) == false)
 144       return false;
 145
 146    // Read the source list
 147    if (Cache.BuildSourceList() == false)
 148       return false;
 149    pkgSourceList *List = Cache.GetSourceList();
 150
 151    // Create the package manager and prepare to download
 152    std::unique_ptr<pkgPackageManager> PM(_system->CreatePM(Cache));
 153    if (PM->GetArchives(&Fetcher,List,&Recs) == false ||
 154        _error->PendingError() == true)
 155       return false;
 156
 157    // Display statistics
 158    unsigned long long FetchBytes = Fetcher.FetchNeeded();
 159    unsigned long long FetchPBytes = Fetcher.PartialPresent();
 160    unsigned long long DebBytes = Fetcher.TotalNeeded();
 161    if (DebBytes != Cache->DebSize())
 162    {
 163       c0out << DebBytes << ',' << Cache->DebSize() << std::endl;
 164       c0out << _("How odd... The sizes didn't match, email apt@packages.debian.org") << std::endl;
 165    }
 166
 167    // Number of bytes
 168    if (DebBytes != FetchBytes)
 169       //TRANSLATOR: The required space between number and unit is already included
 170       // in the replacement strings, so %sB will be correctly translate in e.g. 1,5 MB
 171       ioprintf(c1out,_("Need to get %sB/%sB of archives.\n"),
 172                SizeToStr(FetchBytes).c_str(),SizeToStr(DebBytes).c_str());
 173    else if (DebBytes != 0)
 174       //TRANSLATOR: The required space between number and unit is already included
 175       // in the replacement string, so %sB will be correctly translate in e.g. 1,5 MB
 176       ioprintf(c1out,_("Need to get %sB of archives.\n"),
 177                SizeToStr(DebBytes).c_str());
 178
 179    // Size delta
 180    if (Cache->UsrSize() >= 0)
 181       //TRANSLATOR: The required space between number and unit is already included
 182       // in the replacement string, so %sB will be correctly translate in e.g. 1,5 MB
 183       ioprintf(c1out,_("After this operation, %sB of additional disk space will be used.\n"),
 184                SizeToStr(Cache->UsrSize()).c_str());
 185    else
 186       //TRANSLATOR: The required space between number and unit is already included
 187       // in the replacement string, so %sB will be correctly translate in e.g. 1,5 MB
 188       ioprintf(c1out,_("After this operation, %sB disk space will be freed.\n"),
 189                SizeToStr(-1*Cache->UsrSize()).c_str());
 190
 191    if (_error->PendingError() == true)
 192       return false;
 193
 194    if (CheckFreeSpaceBeforeDownload(_config->FindDir("Dir::Cache::Archives"), (FetchBytes - FetchPBytes)) == false)
 195       return false;
 196
 197    if (Essential == true && Safety == true && _config->FindB("APT::Get::allow-remove-essential", false) == false)
 198    {
 199       if (_config->FindB("APT::Get::Trivial-Only",false) == true)
 200          return _error->Error(_("Trivial Only specified but this is not a trivial operation."));
 201
 202       // TRANSLATOR: This string needs to be typed by the user as a confirmation, so be
 203       //             careful with hard to type or special characters (like non-breaking spaces)
 204       const char *Prompt = _("Yes, do as I say!");
 205       ioprintf(c2out,
 206                _("You are about to do something potentially harmful.\n"
 207                  "To continue type in the phrase '%s'\n"
 208                  " ?] "),Prompt);
 209       c2out << std::flush;
 210       if (AnalPrompt(Prompt) == false)
 211       {
 212          c2out << _("Abort.") << std::endl;
 213          exit(1);
 214       }
 215    }
 216    else
 217    {
 218       // Prompt to continue
 219       if (Ask == true || Fail == true)
 220       {
 221          if (_config->FindB("APT::Get::Trivial-Only",false) == true)
 222             return _error->Error(_("Trivial Only specified but this is not a trivial operation."));
 223
 224          if (_config->FindI("quiet",0) < 2 &&
 225              _config->FindB("APT::Get::Assume-Yes",false) == false)
 226          {
 227             c2out << _("Do you want to continue?") << std::flush;
 228             if (YnPrompt() == false)
 229             {
 230                c2out << _("Abort.") << std::endl;
 231                exit(1);
 232             }
 233          }
 234       }
 235    }
 236
 237    // Just print out the uris an exit if the --print-uris flag was used
 238    if (_config->FindB("APT::Get::Print-URIs") == true)
 239    {
 240       pkgAcquire::UriIterator I = Fetcher.UriBegin();
 241       for (; I != Fetcher.UriEnd(); ++I)
 242          std::cout << '\'' << I->URI << "' " << flNotDir(I->Owner->DestFile) << ' ' <<
 243                I->Owner->FileSize << ' ' << I->Owner->HashSum() << std::endl;
 244       return true;
 245    }
 246
 247    if (!CheckAuth(Fetcher, true))
 248       return false;
 249
 250    /* Unlock the dpkg lock if we are not going to be doing an install
 251       after. */
 252    if (_config->FindB("APT::Get::Download-Only",false) == true)
 253       _system->UnLock();
 254
 255    // Run it
 256    while (1)
 257    {
 258       bool Transient = false;
 259       if (_config->FindB("APT::Get::Download",true) == false)
 260       {
 261          for (pkgAcquire::ItemIterator I = Fetcher.ItemsBegin(); I < Fetcher.ItemsEnd();)
 262          {
 263             if ((*I)->Local == true)
 264             {
 265                ++I;
 266                continue;
 267             }
 268
 269             // Close the item and check if it was found in cache
 270             (*I)->Finished();
 271             if ((*I)->Complete == false)
 272                Transient = true;
 273
 274             // Clear it out of the fetch list
 275             delete *I;
 276             I = Fetcher.ItemsBegin();
 277          }
 278       }
 279
 280       bool Failed = false;
 281       if (AcquireRun(Fetcher, 0, &Failed, &Transient) == false)
 282          return false;
 283
 284       /* If we are in no download mode and missing files and there were
 285          'failures' then the user must specify -m. Furthermore, there
 286          is no such thing as a transient error in no-download mode! */
 287       if (Transient == true &&
 288           _config->FindB("APT::Get::Download",true) == false)
 289       {
 290          Transient = false;
 291          Failed = true;
 292       }
 293
 294       if (_config->FindB("APT::Get::Download-Only",false) == true)
 295       {
 296          if (Failed == true && _config->FindB("APT::Get::Fix-Missing",false) == false)
 297             return _error->Error(_("Some files failed to download"));
 298          c1out << _("Download complete and in download only mode") << std::endl;
 299          return true;
 300       }
 301
 302       if (Failed == true && _config->FindB("APT::Get::Fix-Missing",false) == false)
 303       {
 304          return _error->Error(_("Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?"));
 305       }
 306
 307       if (Transient == true && Failed == true)
 308          return _error->Error(_("--fix-missing and media swapping is not currently supported"));
 309
 310       // Try to deal with missing package files
 311       if (Failed == true && PM->FixMissing() == false)
 312       {
 313          c2out << _("Unable to correct missing packages.") << std::endl;
 314          return _error->Error(_("Aborting install."));
 315       }
 316
 317       _system->UnLock();
 318
 319       APT::Progress::PackageManager *progress = APT::Progress::PackageManagerProgressFactory();
 320       pkgPackageManager::OrderResult Res = PM->DoInstall(progress);
 321       delete progress;
 322
 323       if (Res == pkgPackageManager::Failed || _error->PendingError() == true)
 324          return false;
 325       if (Res == pkgPackageManager::Completed)
 326          break;
 327
 328       // Reload the fetcher object and loop again for media swapping
 329       Fetcher.Shutdown();
 330       if (PM->GetArchives(&Fetcher,List,&Recs) == false)
 331          return false;
 332
 333       _system->Lock();
 334    }
 335
 336    std::set<std::string> const disappearedPkgs = PM->GetDisappearedPackages();
 337    if (disappearedPkgs.empty() == false)
 338    {
 339       ShowList(c1out, P_("The following package disappeared from your system as\n"
 340                "all files have been overwritten by other packages:",
 341                "The following packages disappeared from your system as\n"
 342                "all files have been overwritten by other packages:", disappearedPkgs.size()), disappearedPkgs,
 343             [](std::string const &Pkg) { return Pkg.empty() == false; },
 344             [](std::string const &Pkg) { return Pkg; },
 345             [](std::string const &) { return std::string(); });
 346       c0out << _("Note: This is done automatically and on purpose by dpkg.") << std::endl;
 347    }
 348
 349    return true;
 350 }
 351                                                                         /*}}}*/
 352 // DoAutomaticRemove - Remove all automatic unused packages             /*{{{*/
 353 // ---------------------------------------------------------------------
 354 /* Remove unused automatic packages */
 355 static bool DoAutomaticRemove(CacheFile &Cache)
 356 {
 357    bool Debug = _config->FindI("Debug::pkgAutoRemove",false);
 358    bool doAutoRemove = _config->FindB("APT::Get::AutomaticRemove", false);
 359    bool hideAutoRemove = _config->FindB("APT::Get::HideAutoRemove");
 360
 361    pkgDepCache::ActionGroup group(*Cache);
 362    if(Debug)
 363       std::cout << "DoAutomaticRemove()" << std::endl;
 364
 365    if (doAutoRemove == true &&
 366         _config->FindB("APT::Get::Remove",true) == false)
 367    {
 368       c1out << _("We are not supposed to delete stuff, can't start "
 369                  "AutoRemover") << std::endl;
 370       return false;
 371    }
 372
 373    bool purgePkgs = _config->FindB("APT::Get::Purge", false);
 374    bool smallList = (hideAutoRemove == false &&
 375                 strcasecmp(_config->Find("APT::Get::HideAutoRemove","").c_str(),"small") == 0);
 376
 377    unsigned long autoRemoveCount = 0;
 378    APT::PackageSet tooMuch;
 379    SortedPackageUniverse Universe(Cache);
 380    // look over the cache to see what can be removed
 381    for (auto const &Pkg: Universe)
 382    {
 383       if (Cache[Pkg].Garbage)
 384       {
 385          if(Pkg.CurrentVer() != 0 || Cache[Pkg].Install())
 386             if(Debug)
 387                std::cout << "We could delete %s" <<  Pkg.FullName(true).c_str() << std::endl;
 388
 389          if (doAutoRemove)
 390          {
 391             if(Pkg.CurrentVer() != 0 &&
 392                Pkg->CurrentState != pkgCache::State::ConfigFiles)
 393                Cache->MarkDelete(Pkg, purgePkgs, 0, false);
 394             else
 395                Cache->MarkKeep(Pkg, false, false);
 396          }
 397          else
 398          {
 399             // if the package is a new install and already garbage we don't need to
 400             // install it in the first place, so nuke it instead of show it
 401             if (Cache[Pkg].Install() == true && Pkg.CurrentVer() == 0)
 402             {
 403                if (Pkg.CandVersion() != 0)
 404                   tooMuch.insert(Pkg);
 405                Cache->MarkDelete(Pkg, false, 0, false);
 406             }
 407             // only show stuff in the list that is not yet marked for removal
 408             else if(hideAutoRemove == false && Cache[Pkg].Delete() == false)
 409                ++autoRemoveCount;
 410          }
 411       }
 412    }
 413
 414    // we could have removed a new dependency of a garbage package,
 415    // so check if a reverse depends is broken and if so install it again.
 416    if (tooMuch.empty() == false && (Cache->BrokenCount() != 0 || Cache->PolicyBrokenCount() != 0))
 417    {
 418       bool Changed;
 419       do {
 420          Changed = false;
 421          for (APT::PackageSet::iterator Pkg = tooMuch.begin();
 422               Pkg != tooMuch.end(); ++Pkg)
 423          {
 424             APT::PackageSet too;
 425             too.insert(*Pkg);
 426             for (pkgCache::PrvIterator Prv = Cache[Pkg].CandidateVerIter(Cache).ProvidesList();
 427                  Prv.end() == false; ++Prv)
 428                too.insert(Prv.ParentPkg());
 429             for (APT::PackageSet::const_iterator P = too.begin(); P != too.end(); ++P)
 430             {
 431                for (pkgCache::DepIterator R = P.RevDependsList();
 432                     R.end() == false; ++R)
 433                {
 434                   if (R.IsNegative() == true ||
 435                       Cache->IsImportantDep(R) == false)
 436                      continue;
 437                  pkgCache::PkgIterator N = R.ParentPkg();
 438                  if (N.end() == true || (N->CurrentVer == 0 && (*Cache)[N].Install() == false))
 439                     continue;
 440                  if (Debug == true)
 441                     std::clog << "Save " << Pkg << " as another installed garbage package depends on it" << std::endl;
 442                  Cache->MarkInstall(Pkg, false, 0, false);
 443                  if (hideAutoRemove == false)
 444                     ++autoRemoveCount;
 445                  tooMuch.erase(Pkg);
 446                  Changed = true;
 447                  break;
 448                }
 449                if (Changed == true)
 450                   break;
 451             }
 452             if (Changed == true)
 453                break;
 454          }
 455       } while (Changed == true);
 456    }
 457
 458    // Now see if we had destroyed anything (if we had done anything)
 459    if (Cache->BrokenCount() != 0)
 460    {
 461       c1out << _("Hmm, seems like the AutoRemover destroyed something which really\n"
 462                  "shouldn't happen. Please file a bug report against apt.") << std::endl;
 463       c1out << std::endl;
 464       c1out << _("The following information may help to resolve the situation:") << std::endl;
 465       c1out << std::endl;
 466       ShowBroken(c1out,Cache,false);
 467
 468       return _error->Error(_("Internal Error, AutoRemover broke stuff"));
 469    }
 470
 471    // if we don't remove them, we should show them!
 472    if (doAutoRemove == false && autoRemoveCount != 0)
 473    {
 474       if (smallList == false)
 475       {
 476          SortedPackageUniverse Universe(Cache);
 477          ShowList(c1out, P_("The following package was automatically installed and is no longer required:",
 478                   "The following packages were automatically installed and are no longer required:",
 479                   autoRemoveCount), Universe,
 480                [&Cache](pkgCache::PkgIterator const &Pkg) { return (*Cache)[Pkg].Garbage == true && (*Cache)[Pkg].Delete() == false; },
 481                &PrettyFullName, CandidateVersion(&Cache));
 482       }
 483       else
 484          ioprintf(c1out, P_("%lu package was automatically installed and is no longer required.\n",
 485                   "%lu packages were automatically installed and are no longer required.\n", autoRemoveCount), autoRemoveCount);
 486       std::string autocmd = "apt autoremove";
 487       if (getenv("SUDO_USER") != NULL)
 488          autocmd = "sudo " + autocmd;
 489       ioprintf(c1out, P_("Use '%s' to remove it.", "Use '%s' to remove them.", autoRemoveCount), autocmd.c_str());
 490       c1out << std::endl;
 491    }
 492    return true;
 493 }
 494                                                                         /*}}}*/
 495 // DoCacheManipulationFromCommandLine                                   /*{{{*/
 496 static const unsigned short MOD_REMOVE = 1;
 497 static const unsigned short MOD_INSTALL = 2;
 498
 499 bool DoCacheManipulationFromCommandLine(CommandLine &CmdL, CacheFile &Cache, int UpgradeMode)
 500 {
 501    std::vector<const char*> VolatileCmdL;
 502    return DoCacheManipulationFromCommandLine(CmdL, VolatileCmdL, Cache, UpgradeMode);
 503 }
 504 bool DoCacheManipulationFromCommandLine(CommandLine &CmdL, std::vector<const char*> &VolatileCmdL, CacheFile &Cache, int UpgradeMode)
 505 {
 506    std::map<unsigned short, APT::VersionSet> verset;
 507    return DoCacheManipulationFromCommandLine(CmdL, VolatileCmdL, Cache, verset, UpgradeMode);
 508 }
 509 bool DoCacheManipulationFromCommandLine(CommandLine &CmdL, std::vector<const char*> &VolatileCmdL, CacheFile &Cache,
 510                                         std::map<unsigned short, APT::VersionSet> &verset, int UpgradeMode)
 511 {
 512    // Enter the special broken fixing mode if the user specified arguments
 513    bool BrokenFix = false;
 514    if (Cache->BrokenCount() != 0)
 515       BrokenFix = true;
 516
 517    std::unique_ptr<pkgProblemResolver> Fix(nullptr);
 518    if (_config->FindB("APT::Get::CallResolver", true) == true)
 519       Fix.reset(new pkgProblemResolver(Cache));
 520
 521    unsigned short fallback = MOD_INSTALL;
 522    if (strcasecmp(CmdL.FileList[0],"remove") == 0)
 523       fallback = MOD_REMOVE;
 524    else if (strcasecmp(CmdL.FileList[0], "purge") == 0)
 525    {
 526       _config->Set("APT::Get::Purge", true);
 527       fallback = MOD_REMOVE;
 528    }
 529    else if (strcasecmp(CmdL.FileList[0], "autoremove") == 0 ||
 530             strcasecmp(CmdL.FileList[0], "auto-remove") == 0)
 531    {
 532       _config->Set("APT::Get::AutomaticRemove", "true");
 533       fallback = MOD_REMOVE;
 534    }
 535
 536    std::list<APT::VersionSet::Modifier> mods;
 537    mods.push_back(APT::VersionSet::Modifier(MOD_INSTALL, "+",
 538                 APT::VersionSet::Modifier::POSTFIX, APT::CacheSetHelper::CANDIDATE));
 539    mods.push_back(APT::VersionSet::Modifier(MOD_REMOVE, "-",
 540                 APT::VersionSet::Modifier::POSTFIX, APT::CacheSetHelper::NEWEST));
 541    CacheSetHelperAPTGet helper(c0out);
 542    verset = APT::VersionSet::GroupedFromCommandLine(Cache,
 543                 CmdL.FileList + 1, mods, fallback, helper);
 544
 545    for (auto const &I: VolatileCmdL)
 546    {
 547       pkgCache::PkgIterator const P = Cache->FindPkg(I);
 548       if (P.end())
 549          continue;
 550
 551       // Set any version providing the .deb as the candidate.
 552       for (auto Prv = P.ProvidesList(); Prv.end() == false; Prv++)
 553          Cache.GetDepCache()->SetCandidateVersion(Prv.OwnerVer());
 554
 555       // via cacheset to have our usual virtual handling
 556       APT::VersionContainerInterface::FromPackage(&(verset[MOD_INSTALL]), Cache, P, APT::CacheSetHelper::CANDIDATE, helper);
 557    }
 558
 559    if (_error->PendingError() == true)
 560    {
 561       helper.showVirtualPackageErrors(Cache);
 562       return false;
 563    }
 564
 565
 566   TryToInstall InstallAction(Cache, Fix.get(), BrokenFix);
 567   TryToRemove RemoveAction(Cache, Fix.get());
 568
 569    // new scope for the ActionGroup
 570    {
 571       pkgDepCache::ActionGroup group(Cache);
 572       unsigned short const order[] = { MOD_REMOVE, MOD_INSTALL, 0 };
 573
 574       for (unsigned short i = 0; order[i] != 0; ++i)
 575       {
 576          if (order[i] == MOD_INSTALL)
 577             InstallAction = std::for_each(verset[MOD_INSTALL].begin(), verset[MOD_INSTALL].end(), InstallAction);
 578          else if (order[i] == MOD_REMOVE)
 579             RemoveAction = std::for_each(verset[MOD_REMOVE].begin(), verset[MOD_REMOVE].end(), RemoveAction);
 580       }
 581
 582       if (Fix != NULL && _config->FindB("APT::Get::AutoSolving", true) == true)
 583       {
 584          InstallAction.propergateReleaseCandiateSwitching(helper.selectedByRelease, c0out);
 585          InstallAction.doAutoInstall();
 586       }
 587
 588       if (_error->PendingError() == true)
 589       {
 590          return false;
 591       }
 592
 593       /* If we are in the Broken fixing mode we do not attempt to fix the
 594          problems. This is if the user invoked install without -f and gave
 595          packages */
 596       if (BrokenFix == true && Cache->BrokenCount() != 0)
 597       {
 598          c1out << _("You might want to run 'apt-get -f install' to correct these:") << std::endl;
 599          ShowBroken(c1out,Cache,false);
 600          return _error->Error(_("Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution)."));
 601       }
 602
 603       if (Fix != NULL)
 604       {
 605          // Call the scored problem resolver
 606          OpTextProgress Progress(*_config);
 607          bool const distUpgradeMode = strcmp(CmdL.FileList[0], "dist-upgrade") == 0 || strcmp(CmdL.FileList[0], "full-upgrade") == 0;
 608
 609          bool resolver_fail = false;
 610          if (distUpgradeMode == true || UpgradeMode != APT::Upgrade::ALLOW_EVERYTHING)
 611             resolver_fail = APT::Upgrade::Upgrade(Cache, UpgradeMode, &Progress);
 612          else
 613             resolver_fail = Fix->Resolve(true, &Progress);
 614
 615          if (resolver_fail == false && Cache->BrokenCount() == 0)
 616             return false;
 617       }
 618
 619       // Now we check the state of the packages,
 620       if (Cache->BrokenCount() != 0)
 621       {
 622          c1out <<
 623             _("Some packages could not be installed. This may mean that you have\n"
 624               "requested an impossible situation or if you are using the unstable\n"
 625               "distribution that some required packages have not yet been created\n"
 626               "or been moved out of Incoming.") << std::endl;
 627          /*
 628          if (Packages == 1)
 629          {
 630             c1out << std::endl;
 631             c1out <<
 632                _("Since you only requested a single operation it is extremely likely that\n"
 633                  "the package is simply not installable and a bug report against\n"
 634                  "that package should be filed.") << std::endl;
 635          }
 636          */
 637
 638          c1out << _("The following information may help to resolve the situation:") << std::endl;
 639          c1out << std::endl;
 640          ShowBroken(c1out,Cache,false);
 641          if (_error->PendingError() == true)
 642             return false;
 643          else
 644             return _error->Error(_("Broken packages"));
 645       }
 646    }
 647    if (!DoAutomaticRemove(Cache))
 648       return false;
 649
 650    // if nothing changed in the cache, but only the automark information
 651    // we write the StateFile here, otherwise it will be written in
 652    // cache.commit()
 653    if (InstallAction.AutoMarkChanged > 0 &&
 654        Cache->DelCount() == 0 && Cache->InstCount() == 0 &&
 655        Cache->BadCount() == 0 &&
 656        _config->FindB("APT::Get::Simulate",false) == false)
 657       Cache->writeStateFile(NULL);
 658
 659    return true;
 660 }
 661                                                                         /*}}}*/
 662 // DoInstall - Install packages from the command line                   /*{{{*/
 663 // ---------------------------------------------------------------------
 664 /* Install named packages */
 665 struct PkgIsExtraInstalled {
 666    pkgCacheFile * const Cache;
 667    APT::VersionSet const * const verset;
 668    PkgIsExtraInstalled(pkgCacheFile * const Cache, APT::VersionSet const * const Container) : Cache(Cache), verset(Container) {}
 669    bool operator() (pkgCache::PkgIterator const &Pkg)
 670    {
 671         if ((*Cache)[Pkg].Install() == false)
 672            return false;
 673         pkgCache::VerIterator const Cand = (*Cache)[Pkg].CandidateVerIter(*Cache);
 674         return verset->find(Cand) == verset->end();
 675    }
 676 };
 677 bool DoInstall(CommandLine &CmdL)
 678 {
 679    CacheFile Cache;
 680    std::vector<char const *> VolatileCmdL;
 681    Cache.GetSourceList()->AddVolatileFiles(CmdL, &VolatileCmdL);
 682
 683    // then open the cache
 684    if (Cache.OpenForInstall() == false ||
 685        Cache.CheckDeps(CmdL.FileSize() != 1) == false)
 686       return false;
 687
 688    std::map<unsigned short, APT::VersionSet> verset;
 689    if(!DoCacheManipulationFromCommandLine(CmdL, VolatileCmdL, Cache, verset, 0))
 690       return false;
 691
 692    /* Print out a list of packages that are going to be installed extra
 693       to what the user asked */
 694    SortedPackageUniverse Universe(Cache);
 695    if (Cache->InstCount() != verset[MOD_INSTALL].size())
 696       ShowList(c1out, _("The following additional packages will be installed:"), Universe,
 697             PkgIsExtraInstalled(&Cache, &verset[MOD_INSTALL]),
 698             &PrettyFullName, CandidateVersion(&Cache));
 699
 700    /* Print out a list of suggested and recommended packages */
 701    {
 702       std::list<std::string> Recommends, Suggests, SingleRecommends, SingleSuggests;
 703       for (auto const &Pkg: Universe)
 704       {
 705          /* Just look at the ones we want to install */
 706          if ((*Cache)[Pkg].Install() == false)
 707            continue;
 708
 709          // get the recommends/suggests for the candidate ver
 710          pkgCache::VerIterator CV = (*Cache)[Pkg].CandidateVerIter(*Cache);
 711          for (pkgCache::DepIterator D = CV.DependsList(); D.end() == false; )
 712          {
 713             pkgCache::DepIterator Start;
 714             pkgCache::DepIterator End;
 715             D.GlobOr(Start,End); // advances D
 716             if (Start->Type != pkgCache::Dep::Recommends && Start->Type != pkgCache::Dep::Suggests)
 717                continue;
 718
 719             {
 720                // Skip if we already saw this
 721                std::string target;
 722                for (pkgCache::DepIterator I = Start; I != D; ++I)
 723                {
 724                   if (target.empty() == false)
 725                      target.append(" | ");
 726                   target.append(I.TargetPkg().FullName(true));
 727                }
 728                std::list<std::string> &Type = Start->Type == pkgCache::Dep::Recommends ? SingleRecommends : SingleSuggests;
 729                if (std::find(Type.begin(), Type.end(), target) != Type.end())
 730                   continue;
 731                Type.push_back(target);
 732             }
 733
 734             std::list<std::string> OrList;
 735             bool foundInstalledInOrGroup = false;
 736             for (pkgCache::DepIterator I = Start; I != D; ++I)
 737             {
 738                {
 739                   // satisfying package is installed and not marked for deletion
 740                   APT::VersionList installed = APT::VersionList::FromDependency(Cache, I, APT::CacheSetHelper::INSTALLED);
 741                   if (std::find_if(installed.begin(), installed.end(),
 742                            [&Cache](pkgCache::VerIterator const &Ver) { return Cache[Ver.ParentPkg()].Delete() == false; }) != installed.end())
 743                   {
 744                      foundInstalledInOrGroup = true;
 745                      break;
 746                   }
 747                }
 748
 749                {
 750                   // satisfying package is upgraded to/new install
 751                   APT::VersionList upgrades = APT::VersionList::FromDependency(Cache, I, APT::CacheSetHelper::CANDIDATE);
 752                   if (std::find_if(upgrades.begin(), upgrades.end(),
 753                            [&Cache](pkgCache::VerIterator const &Ver) { return Cache[Ver.ParentPkg()].Upgrade(); }) != upgrades.end())
 754                   {
 755                      foundInstalledInOrGroup = true;
 756                      break;
 757                   }
 758                }
 759
 760                if (OrList.empty())
 761                   OrList.push_back(I.TargetPkg().FullName(true));
 762                else
 763                   OrList.push_back("| " + I.TargetPkg().FullName(true));
 764             }
 765
 766             if(foundInstalledInOrGroup == false)
 767             {
 768                std::list<std::string> &Type = Start->Type == pkgCache::Dep::Recommends ? Recommends : Suggests;
 769                std::move(OrList.begin(), OrList.end(), std::back_inserter(Type));
 770             }
 771          }
 772       }
 773       auto always_true = [](std::string const&) { return true; };
 774       auto string_ident = [](std::string const&str) { return str; };
 775       auto verbose_show_candidate =
 776          [&Cache](std::string str)
 777          {
 778             if (APT::String::Startswith(str, "| "))
 779                str.erase(0, 2);
 780             pkgCache::PkgIterator const Pkg = Cache->FindPkg(str);
 781             if (Pkg.end() == true)
 782                return "";
 783             return (*Cache)[Pkg].CandVersion;
 784          };
 785       ShowList(c1out,_("Suggested packages:"), Suggests,
 786             always_true, string_ident, verbose_show_candidate);
 787       ShowList(c1out,_("Recommended packages:"), Recommends,
 788             always_true, string_ident, verbose_show_candidate);
 789    }
 790
 791    // See if we need to prompt
 792    // FIXME: check if really the packages in the set are going to be installed
 793    if (Cache->InstCount() == verset[MOD_INSTALL].size() && Cache->DelCount() == 0)
 794       return InstallPackages(Cache,false,false);
 795
 796    return InstallPackages(Cache,false);
 797 }
 798                                                                         /*}}}*/
 799
 800 // TryToInstall - Mark a package for installation                       /*{{{*/
 801 void TryToInstall::operator() (pkgCache::VerIterator const &Ver) {
 802    pkgCache::PkgIterator Pkg = Ver.ParentPkg();
 803
 804    Cache->GetDepCache()->SetCandidateVersion(Ver);
 805    pkgDepCache::StateCache &State = (*Cache)[Pkg];
 806
 807    // Handle the no-upgrade case
 808    if (_config->FindB("APT::Get::upgrade",true) == false && Pkg->CurrentVer != 0)
 809       ioprintf(c1out,_("Skipping %s, it is already installed and upgrade is not set.\n"),
 810             Pkg.FullName(true).c_str());
 811    // Ignore request for install if package would be new
 812    else if (_config->FindB("APT::Get::Only-Upgrade", false) == true && Pkg->CurrentVer == 0)
 813       ioprintf(c1out,_("Skipping %s, it is not installed and only upgrades are requested.\n"),
 814             Pkg.FullName(true).c_str());
 815    else {
 816       if (Fix != NULL) {
 817          Fix->Clear(Pkg);
 818          Fix->Protect(Pkg);
 819       }
 820       Cache->GetDepCache()->MarkInstall(Pkg,false);
 821
 822       if (State.Install() == false) {
 823          if (_config->FindB("APT::Get::ReInstall",false) == true) {
 824             if (Pkg->CurrentVer == 0 || Pkg.CurrentVer().Downloadable() == false)
 825                ioprintf(c1out,_("Reinstallation of %s is not possible, it cannot be downloaded.\n"),
 826                      Pkg.FullName(true).c_str());
 827             else
 828                Cache->GetDepCache()->SetReInstall(Pkg, true);
 829          } else
 830             // TRANSLATORS: First string is package name, second is version
 831             ioprintf(c1out,_("%s is already the newest version (%s).\n"),
 832                   Pkg.FullName(true).c_str(), Pkg.CurrentVer().VerStr());
 833       }
 834
 835       // Install it with autoinstalling enabled (if we not respect the minial
 836       // required deps or the policy)
 837       if (FixBroken == false)
 838          doAutoInstallLater.insert(Pkg);
 839    }
 840
 841    // see if we need to fix the auto-mark flag
 842    // e.g. apt-get install foo
 843    // where foo is marked automatic
 844    if (State.Install() == false &&
 845          (State.Flags & pkgCache::Flag::Auto) &&
 846          _config->FindB("APT::Get::ReInstall",false) == false &&
 847          _config->FindB("APT::Get::Only-Upgrade",false) == false &&
 848          _config->FindB("APT::Get::Download-Only",false) == false)
 849    {
 850       ioprintf(c1out,_("%s set to manually installed.\n"),
 851             Pkg.FullName(true).c_str());
 852       Cache->GetDepCache()->MarkAuto(Pkg,false);
 853       AutoMarkChanged++;
 854    }
 855 }
 856                                                                         /*}}}*/
 857 bool TryToInstall::propergateReleaseCandiateSwitching(std::list<std::pair<pkgCache::VerIterator, std::string> > const &start, std::ostream &out)/*{{{*/
 858 {
 859    for (std::list<std::pair<pkgCache::VerIterator, std::string> >::const_iterator s = start.begin();
 860          s != start.end(); ++s)
 861       Cache->GetDepCache()->SetCandidateVersion(s->first);
 862
 863    bool Success = true;
 864    // the Changed list contains:
 865    //   first: "new version"
 866    //   second: "what-caused the change"
 867    std::list<std::pair<pkgCache::VerIterator, pkgCache::VerIterator> > Changed;
 868    for (std::list<std::pair<pkgCache::VerIterator, std::string> >::const_iterator s = start.begin();
 869          s != start.end(); ++s)
 870    {
 871       Changed.push_back(std::make_pair(s->first, pkgCache::VerIterator(*Cache)));
 872       // We continue here even if it failed to enhance the ShowBroken output
 873       Success &= Cache->GetDepCache()->SetCandidateRelease(s->first, s->second, Changed);
 874    }
 875    for (std::list<std::pair<pkgCache::VerIterator, pkgCache::VerIterator> >::const_iterator c = Changed.begin();
 876          c != Changed.end(); ++c)
 877    {
 878       if (c->second.end() == true)
 879          ioprintf(out, _("Selected version '%s' (%s) for '%s'\n"),
 880                c->first.VerStr(), c->first.RelStr().c_str(), c->first.ParentPkg().FullName(true).c_str());
 881       else if (c->first.ParentPkg()->Group != c->second.ParentPkg()->Group)
 882       {
 883          pkgCache::VerIterator V = (*Cache)[c->first.ParentPkg()].CandidateVerIter(*Cache);
 884          ioprintf(out, _("Selected version '%s' (%s) for '%s' because of '%s'\n"), V.VerStr(),
 885                V.RelStr().c_str(), V.ParentPkg().FullName(true).c_str(), c->second.ParentPkg().FullName(true).c_str());
 886       }
 887    }
 888    return Success;
 889 }
 890                                                                         /*}}}*/
 891 void TryToInstall::doAutoInstall() {                                    /*{{{*/
 892    for (APT::PackageSet::const_iterator P = doAutoInstallLater.begin();
 893          P != doAutoInstallLater.end(); ++P) {
 894       pkgDepCache::StateCache &State = (*Cache)[P];
 895       if (State.InstBroken() == false && State.InstPolicyBroken() == false)
 896          continue;
 897       Cache->GetDepCache()->MarkInstall(P, true);
 898    }
 899    doAutoInstallLater.clear();
 900 }
 901                                                                         /*}}}*/
 902 // TryToRemove - Mark a package for removal                             /*{{{*/
 903 void TryToRemove::operator() (pkgCache::VerIterator const &Ver)
 904 {
 905    pkgCache::PkgIterator Pkg = Ver.ParentPkg();
 906
 907    if (Fix != NULL)
 908    {
 909       Fix->Clear(Pkg);
 910       Fix->Protect(Pkg);
 911       Fix->Remove(Pkg);
 912    }
 913
 914    if ((Pkg->CurrentVer == 0 && PurgePkgs == false) ||
 915          (PurgePkgs == true && Pkg->CurrentState == pkgCache::State::NotInstalled))
 916    {
 917       pkgCache::GrpIterator Grp = Pkg.Group();
 918       pkgCache::PkgIterator P = Grp.PackageList();
 919       for (; P.end() != true; P = Grp.NextPkg(P))
 920       {
 921          if (P == Pkg)
 922             continue;
 923          if (P->CurrentVer != 0 || (PurgePkgs == true && P->CurrentState != pkgCache::State::NotInstalled))
 924          {
 925             // TRANSLATORS: Note, this is not an interactive question
 926             ioprintf(c1out,_("Package '%s' is not installed, so not removed. Did you mean '%s'?\n"),
 927                   Pkg.FullName(true).c_str(), P.FullName(true).c_str());
 928             break;
 929          }
 930       }
 931       if (P.end() == true)
 932          ioprintf(c1out,_("Package '%s' is not installed, so not removed\n"),Pkg.FullName(true).c_str());
 933
 934       // MarkInstall refuses to install packages on hold
 935       Pkg->SelectedState = pkgCache::State::Hold;
 936    }
 937    else
 938       Cache->GetDepCache()->MarkDelete(Pkg, PurgePkgs);
 939 }
 940                                                                         /*}}}*/