apt-private/private-install.cc

   1 // Include Files                                                        /*{{{*/
   2 #include <config.h>
   3
   4 #include <apt-pkg/aptconfiguration.h>
   5 #include <apt-pkg/error.h>
   6 #include <apt-pkg/cmndline.h>
   7 #include <apt-pkg/init.h>
   8 #include <apt-pkg/depcache.h>
   9 #include <apt-pkg/sourcelist.h>
  10 #include <apt-pkg/algorithms.h>
  11 #include <apt-pkg/acquire-item.h>
  12 #include <apt-pkg/strutl.h>
  13 #include <apt-pkg/fileutl.h>
  14 #include <apt-pkg/clean.h>
  15 #include <apt-pkg/srcrecords.h>
  16 #include <apt-pkg/version.h>
  17 #include <apt-pkg/cachefile.h>
  18 #include <apt-pkg/cacheset.h>
  19 #include <apt-pkg/sptr.h>
  20 #include <apt-pkg/md5.h>
  21 #include <apt-pkg/versionmatch.h>
  22 #include <apt-pkg/progress.h>
  23 #include <apt-pkg/pkgsystem.h>
  24 #include <apt-pkg/pkgrecords.h>
  25 #include <apt-pkg/indexfile.h>
  26 #include <apt-pkg/install-progress.h>
  27
  28 #include <set>
  29 #include <locale.h>
  30 #include <langinfo.h>
  31 #include <fstream>
  32 #include <termios.h>
  33 #include <sys/ioctl.h>
  34 #include <sys/stat.h>
  35 #include <sys/statfs.h>
  36 #include <sys/statvfs.h>
  37 #include <signal.h>
  38 #include <unistd.h>
  39 #include <stdio.h>
  40 #include <errno.h>
  41 #include <regex.h>
  42 #include <sys/wait.h>
  43 #include <sstream>
  44
  45 #include "private-install.h"
  46 #include "private-download.h"
  47 #include "private-cachefile.h"
  48 #include "private-output.h"
  49 #include "private-cacheset.h"
  50 #include "acqprogress.h"
  51
  52 #include <apti18n.h>
  53                                                                         /*}}}*/
  54
  55 // InstallPackages - Actually download and install the packages         /*{{{*/
  56 // ---------------------------------------------------------------------
  57 /* This displays the informative messages describing what is going to
  58    happen and then calls the download routines */
  59 bool InstallPackages(CacheFile &Cache,bool ShwKept,bool Ask, bool Safety)
  60 {
  61    if (_config->FindB("APT::Get::Purge",false) == true)
  62    {
  63       pkgCache::PkgIterator I = Cache->PkgBegin();
  64       for (; I.end() == false; ++I)
  65       {
  66          if (I.Purge() == false && Cache[I].Mode == pkgDepCache::ModeDelete)
  67             Cache->MarkDelete(I,true);
  68       }
  69    }
  70
  71    bool Fail = false;
  72    bool Essential = false;
  73
  74    // Show all the various warning indicators
  75    ShowDel(c1out,Cache);
  76    ShowNew(c1out,Cache);
  77    if (ShwKept == true)
  78       ShowKept(c1out,Cache);
  79    Fail |= !ShowHold(c1out,Cache);
  80    if (_config->FindB("APT::Get::Show-Upgraded",true) == true)
  81       ShowUpgraded(c1out,Cache);
  82    Fail |= !ShowDowngraded(c1out,Cache);
  83    if (_config->FindB("APT::Get::Download-Only",false) == false)
  84         Essential = !ShowEssential(c1out,Cache);
  85    Fail |= Essential;
  86    Stats(c1out,Cache);
  87
  88    // Sanity check
  89    if (Cache->BrokenCount() != 0)
  90    {
  91       ShowBroken(c1out,Cache,false);
  92       return _error->Error(_("Internal error, InstallPackages was called with broken packages!"));
  93    }
  94
  95    if (Cache->DelCount() == 0 && Cache->InstCount() == 0 &&
  96        Cache->BadCount() == 0)
  97       return true;
  98
  99    // No remove flag
 100    if (Cache->DelCount() != 0 && _config->FindB("APT::Get::Remove",true) == false)
 101       return _error->Error(_("Packages need to be removed but remove is disabled."));
 102
 103    // Run the simulator ..
 104    if (_config->FindB("APT::Get::Simulate") == true)
 105    {
 106       pkgSimulate PM(Cache);
 107
 108       int status_fd = _config->FindI("APT::Status-Fd",-1);
 109       APT::Progress::PackageManager *progress = NULL;
 110       if (status_fd > 0)
 111          progress = new APT::Progress::PackageManagerProgressFd(status_fd);
 112       pkgPackageManager::OrderResult Res = PM.DoInstall(progress);
 113       delete progress;
 114
 115       if (Res == pkgPackageManager::Failed)
 116          return false;
 117       if (Res != pkgPackageManager::Completed)
 118          return _error->Error(_("Internal error, Ordering didn't finish"));
 119       return true;
 120    }
 121
 122    // Create the text record parser
 123    pkgRecords Recs(Cache);
 124    if (_error->PendingError() == true)
 125       return false;
 126
 127    // Create the download object
 128    pkgAcquire Fetcher;
 129    AcqTextStatus Stat(ScreenWidth,_config->FindI("quiet",0));
 130    if (_config->FindB("APT::Get::Print-URIs", false) == true)
 131    {
 132       // force a hashsum for compatibility reasons
 133       _config->CndSet("Acquire::ForceHash", "md5sum");
 134    }
 135    else if (Fetcher.Setup(&Stat, _config->FindDir("Dir::Cache::Archives")) == false)
 136       return false;
 137
 138    // Read the source list
 139    if (Cache.BuildSourceList() == false)
 140       return false;
 141    pkgSourceList *List = Cache.GetSourceList();
 142
 143    // Create the package manager and prepare to download
 144    SPtr<pkgPackageManager> PM= _system->CreatePM(Cache);
 145    if (PM->GetArchives(&Fetcher,List,&Recs) == false ||
 146        _error->PendingError() == true)
 147       return false;
 148
 149    // Display statistics
 150    unsigned long long FetchBytes = Fetcher.FetchNeeded();
 151    unsigned long long FetchPBytes = Fetcher.PartialPresent();
 152    unsigned long long DebBytes = Fetcher.TotalNeeded();
 153    if (DebBytes != Cache->DebSize())
 154    {
 155       c0out << DebBytes << ',' << Cache->DebSize() << std::endl;
 156       c0out << _("How odd.. The sizes didn't match, email apt@packages.debian.org") << std::endl;
 157    }
 158
 159    // Number of bytes
 160    if (DebBytes != FetchBytes)
 161       //TRANSLATOR: The required space between number and unit is already included
 162       // in the replacement strings, so %sB will be correctly translate in e.g. 1,5 MB
 163       ioprintf(c1out,_("Need to get %sB/%sB of archives.\n"),
 164                SizeToStr(FetchBytes).c_str(),SizeToStr(DebBytes).c_str());
 165    else if (DebBytes != 0)
 166       //TRANSLATOR: The required space between number and unit is already included
 167       // in the replacement string, so %sB will be correctly translate in e.g. 1,5 MB
 168       ioprintf(c1out,_("Need to get %sB of archives.\n"),
 169                SizeToStr(DebBytes).c_str());
 170
 171    // Size delta
 172    if (Cache->UsrSize() >= 0)
 173       //TRANSLATOR: The required space between number and unit is already included
 174       // in the replacement string, so %sB will be correctly translate in e.g. 1,5 MB
 175       ioprintf(c1out,_("After this operation, %sB of additional disk space will be used.\n"),
 176                SizeToStr(Cache->UsrSize()).c_str());
 177    else
 178       //TRANSLATOR: The required space between number and unit is already included
 179       // in the replacement string, so %sB will be correctly translate in e.g. 1,5 MB
 180       ioprintf(c1out,_("After this operation, %sB disk space will be freed.\n"),
 181                SizeToStr(-1*Cache->UsrSize()).c_str());
 182
 183    if (_error->PendingError() == true)
 184       return false;
 185
 186    /* Check for enough free space, but only if we are actually going to
 187       download */
 188    if (_config->FindB("APT::Get::Print-URIs") == false &&
 189        _config->FindB("APT::Get::Download",true) == true)
 190    {
 191       struct statvfs Buf;
 192       std::string OutputDir = _config->FindDir("Dir::Cache::Archives");
 193       if (statvfs(OutputDir.c_str(),&Buf) != 0) {
 194          if (errno == EOVERFLOW)
 195             return _error->WarningE("statvfs",_("Couldn't determine free space in %s"),
 196                                  OutputDir.c_str());
 197          else
 198             return _error->Errno("statvfs",_("Couldn't determine free space in %s"),
 199                                  OutputDir.c_str());
 200       } else if (unsigned(Buf.f_bfree) < (FetchBytes - FetchPBytes)/Buf.f_bsize)
 201       {
 202          struct statfs Stat;
 203          if (statfs(OutputDir.c_str(),&Stat) != 0
 204 #if HAVE_STRUCT_STATFS_F_TYPE
 205              || unsigned(Stat.f_type) != RAMFS_MAGIC
 206 #endif
 207              )
 208             return _error->Error(_("You don't have enough free space in %s."),
 209                 OutputDir.c_str());
 210       }
 211    }
 212
 213    // Fail safe check
 214    if (_config->FindI("quiet",0) >= 2 ||
 215        _config->FindB("APT::Get::Assume-Yes",false) == true)
 216    {
 217       if (Fail == true && _config->FindB("APT::Get::Force-Yes",false) == false)
 218          return _error->Error(_("There are problems and -y was used without --force-yes"));
 219    }
 220
 221    if (Essential == true && Safety == 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       // TRANSLATOR: This string needs to be typed by the user as a confirmation, so be
 227       //             careful with hard to type or special characters (like non-breaking spaces)
 228       const char *Prompt = _("Yes, do as I say!");
 229       ioprintf(c2out,
 230                _("You are about to do something potentially harmful.\n"
 231                  "To continue type in the phrase '%s'\n"
 232                  " ?] "),Prompt);
 233       c2out << std::flush;
 234       if (AnalPrompt(Prompt) == false)
 235       {
 236          c2out << _("Abort.") << std::endl;
 237          exit(1);
 238       }
 239    }
 240    else
 241    {
 242       // Prompt to continue
 243       if (Ask == true || Fail == true)
 244       {
 245          if (_config->FindB("APT::Get::Trivial-Only",false) == true)
 246             return _error->Error(_("Trivial Only specified but this is not a trivial operation."));
 247
 248          if (_config->FindI("quiet",0) < 2 &&
 249              _config->FindB("APT::Get::Assume-Yes",false) == false)
 250          {
 251             c2out << _("Do you want to continue?") << std::flush;
 252             if (YnPrompt() == false)
 253             {
 254                c2out << _("Abort.") << std::endl;
 255                exit(1);
 256             }
 257          }
 258       }
 259    }
 260
 261    // Just print out the uris an exit if the --print-uris flag was used
 262    if (_config->FindB("APT::Get::Print-URIs") == true)
 263    {
 264       pkgAcquire::UriIterator I = Fetcher.UriBegin();
 265       for (; I != Fetcher.UriEnd(); ++I)
 266          std::cout << '\'' << I->URI << "' " << flNotDir(I->Owner->DestFile) << ' ' <<
 267                I->Owner->FileSize << ' ' << I->Owner->HashSum() << std::endl;
 268       return true;
 269    }
 270
 271    if (!CheckAuth(Fetcher, true))
 272       return false;
 273
 274    /* Unlock the dpkg lock if we are not going to be doing an install
 275       after. */
 276    if (_config->FindB("APT::Get::Download-Only",false) == true)
 277       _system->UnLock();
 278
 279    // Run it
 280    while (1)
 281    {
 282       bool Transient = false;
 283       if (_config->FindB("APT::Get::Download",true) == false)
 284       {
 285          for (pkgAcquire::ItemIterator I = Fetcher.ItemsBegin(); I < Fetcher.ItemsEnd();)
 286          {
 287             if ((*I)->Local == true)
 288             {
 289                ++I;
 290                continue;
 291             }
 292
 293             // Close the item and check if it was found in cache
 294             (*I)->Finished();
 295             if ((*I)->Complete == false)
 296                Transient = true;
 297
 298             // Clear it out of the fetch list
 299             delete *I;
 300             I = Fetcher.ItemsBegin();
 301          }
 302       }
 303
 304       bool Failed = false;
 305       if (AcquireRun(Fetcher, 0, &Failed, &Transient) == false)
 306          return false;
 307
 308       /* If we are in no download mode and missing files and there were
 309          'failures' then the user must specify -m. Furthermore, there
 310          is no such thing as a transient error in no-download mode! */
 311       if (Transient == true &&
 312           _config->FindB("APT::Get::Download",true) == false)
 313       {
 314          Transient = false;
 315          Failed = true;
 316       }
 317
 318       if (_config->FindB("APT::Get::Download-Only",false) == true)
 319       {
 320          if (Failed == true && _config->FindB("APT::Get::Fix-Missing",false) == false)
 321             return _error->Error(_("Some files failed to download"));
 322          c1out << _("Download complete and in download only mode") << std::endl;
 323          return true;
 324       }
 325
 326       if (Failed == true && _config->FindB("APT::Get::Fix-Missing",false) == false)
 327       {
 328          return _error->Error(_("Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?"));
 329       }
 330
 331       if (Transient == true && Failed == true)
 332          return _error->Error(_("--fix-missing and media swapping is not currently supported"));
 333
 334       // Try to deal with missing package files
 335       if (Failed == true && PM->FixMissing() == false)
 336       {
 337          c2out << _("Unable to correct missing packages.") << std::endl;
 338          return _error->Error(_("Aborting install."));
 339       }
 340
 341       _system->UnLock();
 342
 343       // FIXME: make this a factory
 344       // select the right progress
 345       int status_fd = _config->FindI("APT::Status-Fd", -1);
 346       int status_deb822_fd = _config->FindI("APT::Status-deb822-Fd", -1);
 347
 348       APT::Progress::PackageManager *progress = NULL;
 349       if (status_deb822_fd > 0)
 350          progress = new APT::Progress::PackageManagerProgressDeb822Fd(
 351             status_deb822_fd);
 352       else if (status_fd > 0)
 353          progress = new APT::Progress::PackageManagerProgressFd(status_fd);
 354       else if(_config->FindB("Dpkg::Progress-Fancy", false) == true)
 355          progress = new APT::Progress::PackageManagerFancy();
 356       else if (_config->FindB("Dpkg::Progress",
 357                 _config->FindB("DpkgPM::Progress", false)) == true)
 358          progress = new APT::Progress::PackageManagerText();
 359       else
 360          progress = new APT::Progress::PackageManager();
 361       pkgPackageManager::OrderResult Res = PM->DoInstall(progress);
 362       delete progress;
 363
 364       if (Res == pkgPackageManager::Failed || _error->PendingError() == true)
 365          return false;
 366       if (Res == pkgPackageManager::Completed)
 367          break;
 368
 369       // Reload the fetcher object and loop again for media swapping
 370       Fetcher.Shutdown();
 371       if (PM->GetArchives(&Fetcher,List,&Recs) == false)
 372          return false;
 373
 374       _system->Lock();
 375    }
 376
 377    std::set<std::string> const disappearedPkgs = PM->GetDisappearedPackages();
 378    if (disappearedPkgs.empty() == true)
 379       return true;
 380
 381    std::string disappear;
 382    for (std::set<std::string>::const_iterator d = disappearedPkgs.begin();
 383         d != disappearedPkgs.end(); ++d)
 384       disappear.append(*d).append(" ");
 385
 386    ShowList(c1out, P_("The following package disappeared from your system as\n"
 387         "all files have been overwritten by other packages:",
 388         "The following packages disappeared from your system as\n"
 389         "all files have been overwritten by other packages:", disappearedPkgs.size()), disappear, "");
 390    c0out << _("Note: This is done automatically and on purpose by dpkg.") << std::endl;
 391
 392    return true;
 393 }
 394                                                                         /*}}}*/
 395 // DoAutomaticRemove - Remove all automatic unused packages             /*{{{*/
 396 // ---------------------------------------------------------------------
 397 /* Remove unused automatic packages */
 398 bool DoAutomaticRemove(CacheFile &Cache)
 399 {
 400    bool Debug = _config->FindI("Debug::pkgAutoRemove",false);
 401    bool doAutoRemove = _config->FindB("APT::Get::AutomaticRemove", false);
 402    bool hideAutoRemove = _config->FindB("APT::Get::HideAutoRemove");
 403
 404    pkgDepCache::ActionGroup group(*Cache);
 405    if(Debug)
 406       std::cout << "DoAutomaticRemove()" << std::endl;
 407
 408    if (doAutoRemove == true &&
 409         _config->FindB("APT::Get::Remove",true) == false)
 410    {
 411       c1out << _("We are not supposed to delete stuff, can't start "
 412                  "AutoRemover") << std::endl;
 413       return false;
 414    }
 415
 416    bool purgePkgs = _config->FindB("APT::Get::Purge", false);
 417    bool smallList = (hideAutoRemove == false &&
 418                 strcasecmp(_config->Find("APT::Get::HideAutoRemove","").c_str(),"small") == 0);
 419
 420    unsigned long autoRemoveCount = 0;
 421    APT::PackageSet tooMuch;
 422    APT::PackageList autoRemoveList;
 423    // look over the cache to see what can be removed
 424    for (unsigned J = 0; J < Cache->Head().PackageCount; ++J)
 425    {
 426       pkgCache::PkgIterator Pkg(Cache,Cache.List[J]);
 427       if (Cache[Pkg].Garbage)
 428       {
 429          if(Pkg.CurrentVer() != 0 || Cache[Pkg].Install())
 430             if(Debug)
 431                std::cout << "We could delete %s" <<  Pkg.FullName(true).c_str() << std::endl;
 432
 433          if (doAutoRemove)
 434          {
 435             if(Pkg.CurrentVer() != 0 &&
 436                Pkg->CurrentState != pkgCache::State::ConfigFiles)
 437                Cache->MarkDelete(Pkg, purgePkgs, 0, false);
 438             else
 439                Cache->MarkKeep(Pkg, false, false);
 440          }
 441          else
 442          {
 443             if (hideAutoRemove == false && Cache[Pkg].Delete() == false)
 444                autoRemoveList.insert(Pkg);
 445             // if the package is a new install and already garbage we don't need to
 446             // install it in the first place, so nuke it instead of show it
 447             if (Cache[Pkg].Install() == true && Pkg.CurrentVer() == 0)
 448             {
 449                if (Pkg.CandVersion() != 0)
 450                   tooMuch.insert(Pkg);
 451                Cache->MarkDelete(Pkg, false, 0, false);
 452             }
 453             // only show stuff in the list that is not yet marked for removal
 454             else if(hideAutoRemove == false && Cache[Pkg].Delete() == false)
 455                ++autoRemoveCount;
 456          }
 457       }
 458    }
 459
 460    // we could have removed a new dependency of a garbage package,
 461    // so check if a reverse depends is broken and if so install it again.
 462    if (tooMuch.empty() == false && (Cache->BrokenCount() != 0 || Cache->PolicyBrokenCount() != 0))
 463    {
 464       bool Changed;
 465       do {
 466          Changed = false;
 467          for (APT::PackageSet::const_iterator Pkg = tooMuch.begin();
 468               Pkg != tooMuch.end(); ++Pkg)
 469          {
 470             APT::PackageSet too;
 471             too.insert(*Pkg);
 472             for (pkgCache::PrvIterator Prv = Cache[Pkg].CandidateVerIter(Cache).ProvidesList();
 473                  Prv.end() == false; ++Prv)
 474                too.insert(Prv.ParentPkg());
 475             for (APT::PackageSet::const_iterator P = too.begin(); P != too.end(); ++P)
 476             {
 477                for (pkgCache::DepIterator R = P.RevDependsList();
 478                     R.end() == false; ++R)
 479                {
 480                   if (R.IsNegative() == true ||
 481                       Cache->IsImportantDep(R) == false)
 482                      continue;
 483                  pkgCache::PkgIterator N = R.ParentPkg();
 484                  if (N.end() == true || (N->CurrentVer == 0 && (*Cache)[N].Install() == false))
 485                     continue;
 486                  if (Debug == true)
 487                     std::clog << "Save " << Pkg << " as another installed garbage package depends on it" << std::endl;
 488                  Cache->MarkInstall(Pkg, false, 0, false);
 489                  if (hideAutoRemove == false)
 490                     ++autoRemoveCount;
 491                  tooMuch.erase(Pkg);
 492                  Changed = true;
 493                  break;
 494                }
 495                if (Changed == true)
 496                   break;
 497             }
 498             if (Changed == true)
 499                break;
 500          }
 501       } while (Changed == true);
 502    }
 503
 504    std::string autoremovelist, autoremoveversions;
 505    if (smallList == false && autoRemoveCount != 0)
 506    {
 507       for (APT::PackageList::const_iterator Pkg = autoRemoveList.begin(); Pkg != autoRemoveList.end(); ++Pkg)
 508       {
 509          if (Cache[Pkg].Garbage == false)
 510             continue;
 511          autoremovelist += Pkg.FullName(true) + " ";
 512          autoremoveversions += std::string(Cache[Pkg].CandVersion) + "\n";
 513       }
 514    }
 515
 516    // Now see if we had destroyed anything (if we had done anything)
 517    if (Cache->BrokenCount() != 0)
 518    {
 519       c1out << _("Hmm, seems like the AutoRemover destroyed something which really\n"
 520                  "shouldn't happen. Please file a bug report against apt.") << std::endl;
 521       c1out << std::endl;
 522       c1out << _("The following information may help to resolve the situation:") << std::endl;
 523       c1out << std::endl;
 524       ShowBroken(c1out,Cache,false);
 525
 526       return _error->Error(_("Internal Error, AutoRemover broke stuff"));
 527    }
 528
 529    // if we don't remove them, we should show them!
 530    if (doAutoRemove == false && (autoremovelist.empty() == false || autoRemoveCount != 0))
 531    {
 532       if (smallList == false)
 533          ShowList(c1out, P_("The following package was automatically installed and is no longer required:",
 534                   "The following packages were automatically installed and are no longer required:",
 535                   autoRemoveCount), autoremovelist, autoremoveversions);
 536       else
 537          ioprintf(c1out, P_("%lu package was automatically installed and is no longer required.\n",
 538                   "%lu packages were automatically installed and are no longer required.\n", autoRemoveCount), autoRemoveCount);
 539       c1out << P_("Use 'apt-get autoremove' to remove it.", "Use 'apt-get autoremove' to remove them.", autoRemoveCount) << std::endl;
 540    }
 541    return true;
 542 }
 543                                                                         /*}}}*/
 544 // DoCacheManipulationFromCommandLine                                   /*{{{*/
 545 static const unsigned short MOD_REMOVE = 1;
 546 static const unsigned short MOD_INSTALL = 2;
 547
 548 bool DoCacheManipulationFromCommandLine(CommandLine &CmdL, CacheFile &Cache)
 549 {
 550    std::map<unsigned short, APT::VersionSet> verset;
 551    return DoCacheManipulationFromCommandLine(CmdL, Cache, verset);
 552 }
 553 bool DoCacheManipulationFromCommandLine(CommandLine &CmdL, CacheFile &Cache,
 554                                         std::map<unsigned short, APT::VersionSet> &verset)
 555 {
 556
 557    // Enter the special broken fixing mode if the user specified arguments
 558    bool BrokenFix = false;
 559    if (Cache->BrokenCount() != 0)
 560       BrokenFix = true;
 561
 562    SPtr<pkgProblemResolver> Fix;
 563    if (_config->FindB("APT::Get::CallResolver", true) == true)
 564       Fix = new pkgProblemResolver(Cache);
 565
 566    unsigned short fallback = MOD_INSTALL;
 567    if (strcasecmp(CmdL.FileList[0],"remove") == 0)
 568       fallback = MOD_REMOVE;
 569    else if (strcasecmp(CmdL.FileList[0], "purge") == 0)
 570    {
 571       _config->Set("APT::Get::Purge", true);
 572       fallback = MOD_REMOVE;
 573    }
 574    else if (strcasecmp(CmdL.FileList[0], "autoremove") == 0)
 575    {
 576       _config->Set("APT::Get::AutomaticRemove", "true");
 577       fallback = MOD_REMOVE;
 578    }
 579
 580    std::list<APT::VersionSet::Modifier> mods;
 581    mods.push_back(APT::VersionSet::Modifier(MOD_INSTALL, "+",
 582                 APT::VersionSet::Modifier::POSTFIX, APT::VersionSet::CANDIDATE));
 583    mods.push_back(APT::VersionSet::Modifier(MOD_REMOVE, "-",
 584                 APT::VersionSet::Modifier::POSTFIX, APT::VersionSet::NEWEST));
 585    CacheSetHelperAPTGet helper(c0out);
 586    verset = APT::VersionSet::GroupedFromCommandLine(Cache,
 587                 CmdL.FileList + 1, mods, fallback, helper);
 588
 589    if (_error->PendingError() == true)
 590    {
 591       helper.showVirtualPackageErrors(Cache);
 592       return false;
 593    }
 594
 595
 596   TryToInstall InstallAction(Cache, Fix, BrokenFix);
 597   TryToRemove RemoveAction(Cache, Fix);
 598
 599    // new scope for the ActionGroup
 600    {
 601       pkgDepCache::ActionGroup group(Cache);
 602       unsigned short const order[] = { MOD_REMOVE, MOD_INSTALL, 0 };
 603
 604       for (unsigned short i = 0; order[i] != 0; ++i)
 605       {
 606          if (order[i] == MOD_INSTALL)
 607             InstallAction = std::for_each(verset[MOD_INSTALL].begin(), verset[MOD_INSTALL].end(), InstallAction);
 608          else if (order[i] == MOD_REMOVE)
 609             RemoveAction = std::for_each(verset[MOD_REMOVE].begin(), verset[MOD_REMOVE].end(), RemoveAction);
 610       }
 611
 612       if (Fix != NULL && _config->FindB("APT::Get::AutoSolving", true) == true)
 613       {
 614          for (unsigned short i = 0; order[i] != 0; ++i)
 615          {
 616             if (order[i] != MOD_INSTALL)
 617                continue;
 618             InstallAction.propergateReleaseCandiateSwitching(helper.selectedByRelease, c0out);
 619             InstallAction.doAutoInstall();
 620          }
 621       }
 622
 623       if (_error->PendingError() == true)
 624       {
 625          return false;
 626       }
 627
 628       /* If we are in the Broken fixing mode we do not attempt to fix the
 629          problems. This is if the user invoked install without -f and gave
 630          packages */
 631       if (BrokenFix == true && Cache->BrokenCount() != 0)
 632       {
 633          c1out << _("You might want to run 'apt-get -f install' to correct these:") << std::endl;
 634          ShowBroken(c1out,Cache,false);
 635          return _error->Error(_("Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution)."));
 636       }
 637
 638       if (Fix != NULL)
 639       {
 640          // Call the scored problem resolver
 641          Fix->Resolve(true);
 642       }
 643
 644       // Now we check the state of the packages,
 645       if (Cache->BrokenCount() != 0)
 646       {
 647          c1out <<
 648             _("Some packages could not be installed. This may mean that you have\n"
 649               "requested an impossible situation or if you are using the unstable\n"
 650               "distribution that some required packages have not yet been created\n"
 651               "or been moved out of Incoming.") << std::endl;
 652          /*
 653          if (Packages == 1)
 654          {
 655             c1out << std::endl;
 656             c1out <<
 657                _("Since you only requested a single operation it is extremely likely that\n"
 658                  "the package is simply not installable and a bug report against\n"
 659                  "that package should be filed.") << std::endl;
 660          }
 661          */
 662
 663          c1out << _("The following information may help to resolve the situation:") << std::endl;
 664          c1out << std::endl;
 665          ShowBroken(c1out,Cache,false);
 666          if (_error->PendingError() == true)
 667             return false;
 668          else
 669             return _error->Error(_("Broken packages"));
 670       }
 671    }
 672    if (!DoAutomaticRemove(Cache))
 673       return false;
 674
 675    // if nothing changed in the cache, but only the automark information
 676    // we write the StateFile here, otherwise it will be written in
 677    // cache.commit()
 678    if (InstallAction.AutoMarkChanged > 0 &&
 679        Cache->DelCount() == 0 && Cache->InstCount() == 0 &&
 680        Cache->BadCount() == 0 &&
 681        _config->FindB("APT::Get::Simulate",false) == false)
 682       Cache->writeStateFile(NULL);
 683
 684    return true;
 685 }
 686                                                                         /*}}}*/
 687 // DoInstall - Install packages from the command line                   /*{{{*/
 688 // ---------------------------------------------------------------------
 689 /* Install named packages */
 690 bool DoInstall(CommandLine &CmdL)
 691 {
 692    CacheFile Cache;
 693    if (Cache.OpenForInstall() == false ||
 694        Cache.CheckDeps(CmdL.FileSize() != 1) == false)
 695       return false;
 696
 697    std::map<unsigned short, APT::VersionSet> verset;
 698
 699    if(!DoCacheManipulationFromCommandLine(CmdL, Cache, verset))
 700       return false;
 701
 702    /* Print out a list of packages that are going to be installed extra
 703       to what the user asked */
 704    if (Cache->InstCount() != verset[MOD_INSTALL].size())
 705    {
 706       std::string List;
 707       std::string VersionsList;
 708       for (unsigned J = 0; J < Cache->Head().PackageCount; J++)
 709       {
 710          pkgCache::PkgIterator I(Cache,Cache.List[J]);
 711          if ((*Cache)[I].Install() == false)
 712             continue;
 713          pkgCache::VerIterator Cand = Cache[I].CandidateVerIter(Cache);
 714
 715          if (verset[MOD_INSTALL].find(Cand) != verset[MOD_INSTALL].end())
 716             continue;
 717
 718          List += I.FullName(true) + " ";
 719          VersionsList += std::string(Cache[I].CandVersion) + "\n";
 720       }
 721
 722       ShowList(c1out,_("The following extra packages will be installed:"),List,VersionsList);
 723    }
 724
 725    /* Print out a list of suggested and recommended packages */
 726    {
 727       std::string SuggestsList, RecommendsList;
 728       std::string SuggestsVersions, RecommendsVersions;
 729       for (unsigned J = 0; J < Cache->Head().PackageCount; J++)
 730       {
 731          pkgCache::PkgIterator Pkg(Cache,Cache.List[J]);
 732
 733          /* Just look at the ones we want to install */
 734          if ((*Cache)[Pkg].Install() == false)
 735            continue;
 736
 737          // get the recommends/suggests for the candidate ver
 738          pkgCache::VerIterator CV = (*Cache)[Pkg].CandidateVerIter(*Cache);
 739          for (pkgCache::DepIterator D = CV.DependsList(); D.end() == false; )
 740          {
 741             pkgCache::DepIterator Start;
 742             pkgCache::DepIterator End;
 743             D.GlobOr(Start,End); // advances D
 744
 745             // FIXME: we really should display a or-group as a or-group to the user
 746             //        the problem is that ShowList is incapable of doing this
 747             std::string RecommendsOrList,RecommendsOrVersions;
 748             std::string SuggestsOrList,SuggestsOrVersions;
 749             bool foundInstalledInOrGroup = false;
 750             for(;;)
 751             {
 752                /* Skip if package is  installed already, or is about to be */
 753                std::string target = Start.TargetPkg().FullName(true) + " ";
 754                pkgCache::PkgIterator const TarPkg = Start.TargetPkg();
 755                if (TarPkg->SelectedState == pkgCache::State::Install ||
 756                    TarPkg->SelectedState == pkgCache::State::Hold ||
 757                    Cache[Start.TargetPkg()].Install())
 758                {
 759                   foundInstalledInOrGroup=true;
 760                   break;
 761                }
 762
 763                /* Skip if we already saw it */
 764                if (int(SuggestsList.find(target)) != -1 || int(RecommendsList.find(target)) != -1)
 765                {
 766                   foundInstalledInOrGroup=true;
 767                   break;
 768                }
 769
 770                // this is a dep on a virtual pkg, check if any package that provides it
 771                // should be installed
 772                if(Start.TargetPkg().ProvidesList() != 0)
 773                {
 774                   pkgCache::PrvIterator I = Start.TargetPkg().ProvidesList();
 775                   for (; I.end() == false; ++I)
 776                   {
 777                      pkgCache::PkgIterator Pkg = I.OwnerPkg();
 778                      if (Cache[Pkg].CandidateVerIter(Cache) == I.OwnerVer() &&
 779                          Pkg.CurrentVer() != 0)
 780                         foundInstalledInOrGroup=true;
 781                   }
 782                }
 783
 784                if (Start->Type == pkgCache::Dep::Suggests)
 785                {
 786                   SuggestsOrList += target;
 787                   SuggestsOrVersions += std::string(Cache[Start.TargetPkg()].CandVersion) + "\n";
 788                }
 789
 790                if (Start->Type == pkgCache::Dep::Recommends)
 791                {
 792                   RecommendsOrList += target;
 793                   RecommendsOrVersions += std::string(Cache[Start.TargetPkg()].CandVersion) + "\n";
 794                }
 795
 796                if (Start >= End)
 797                   break;
 798                ++Start;
 799             }
 800
 801             if(foundInstalledInOrGroup == false)
 802             {
 803                RecommendsList += RecommendsOrList;
 804                RecommendsVersions += RecommendsOrVersions;
 805                SuggestsList += SuggestsOrList;
 806                SuggestsVersions += SuggestsOrVersions;
 807             }
 808
 809          }
 810       }
 811
 812       ShowList(c1out,_("Suggested packages:"),SuggestsList,SuggestsVersions);
 813       ShowList(c1out,_("Recommended packages:"),RecommendsList,RecommendsVersions);
 814
 815    }
 816
 817    // See if we need to prompt
 818    // FIXME: check if really the packages in the set are going to be installed
 819    if (Cache->InstCount() == verset[MOD_INSTALL].size() && Cache->DelCount() == 0)
 820       return InstallPackages(Cache,false,false);
 821
 822    return InstallPackages(Cache,false);
 823 }
 824                                                                         /*}}}*/