cmdline/apt-get.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: apt-get.cc,v 1.62 1999/06/04 02:31:37 jgg Exp $
   4 /* ######################################################################
   5
   6    apt-get - Cover for dpkg
   7
   8    This is an allout cover for dpkg implementing a safer front end. It is
   9    based largely on libapt-pkg.
  10
  11    The syntax is different,
  12       apt-get [opt] command [things]
  13    Where command is:
  14       update - Resyncronize the package files from their sources
  15       upgrade - Smart-Download the newest versions of all packages
  16       dselect-upgrade - Follows dselect's changes to the Status: field
  17                        and installes new and removes old packages
  18       dist-upgrade - Powerfull upgrader designed to handle the issues with
  19                     a new distribution.
  20       install - Download and install a given package (by name, not by .deb)
  21       check - Update the package cache and check for broken packages
  22       clean - Erase the .debs downloaded to /var/cache/apt/archives and
  23               the partial dir too
  24
  25    ##################################################################### */
  26                                                                         /*}}}*/
  27 // Include Files                                                        /*{{{*/
  28 #include <apt-pkg/error.h>
  29 #include <apt-pkg/cmndline.h>
  30 #include <apt-pkg/init.h>
  31 #include <apt-pkg/depcache.h>
  32 #include <apt-pkg/sourcelist.h>
  33 #include <apt-pkg/algorithms.h>
  34 #include <apt-pkg/acquire-item.h>
  35 #include <apt-pkg/dpkgpm.h>
  36 #include <apt-pkg/strutl.h>
  37 #include <apt-pkg/clean.h>
  38 #include <apt-pkg/srcrecords.h>
  39 #include <apt-pkg/version.h>
  40 #include <apt-pkg/cachefile.h>
  41
  42 #include <config.h>
  43
  44 #include "acqprogress.h"
  45
  46 #include <fstream.h>
  47 #include <termios.h>
  48 #include <sys/ioctl.h>
  49 #include <sys/stat.h>
  50 #include <sys/vfs.h>
  51 #include <signal.h>
  52 #include <unistd.h>
  53 #include <stdio.h>
  54 #include <errno.h>
  55 #include <sys/wait.h>
  56                                                                         /*}}}*/
  57
  58 ostream c0out;
  59 ostream c1out;
  60 ostream c2out;
  61 ofstream devnull("/dev/null");
  62 unsigned int ScreenWidth = 80;
  63
  64 // YnPrompt - Yes No Prompt.                                            /*{{{*/
  65 // ---------------------------------------------------------------------
  66 /* Returns true on a Yes.*/
  67 bool YnPrompt()
  68 {
  69    if (_config->FindB("APT::Get::Assume-Yes",false) == true)
  70    {
  71       c1out << 'Y' << endl;
  72       return true;
  73    }
  74
  75    char C = 0;
  76    char Jnk = 0;
  77    read(STDIN_FILENO,&C,1);
  78    while (C != '\n' && Jnk != '\n') read(STDIN_FILENO,&Jnk,1);
  79
  80    if (!(C == 'Y' || C == 'y' || C == '\n' || C == '\r'))
  81       return false;
  82    return true;
  83 }
  84                                                                         /*}}}*/
  85 // AnalPrompt - Annoying Yes No Prompt.                                 /*{{{*/
  86 // ---------------------------------------------------------------------
  87 /* Returns true on a Yes.*/
  88 bool AnalPrompt(const char *Text)
  89 {
  90    char Buf[1024];
  91    cin.getline(Buf,sizeof(Buf));
  92    if (strcmp(Buf,Text) == 0)
  93       return true;
  94    return false;
  95 }
  96                                                                         /*}}}*/
  97 // ShowList - Show a list                                               /*{{{*/
  98 // ---------------------------------------------------------------------
  99 /* This prints out a string of space seperated words with a title and
 100    a two space indent line wraped to the current screen width. */
 101 bool ShowList(ostream &out,string Title,string List)
 102 {
 103    if (List.empty() == true)
 104       return true;
 105
 106    // Acount for the leading space
 107    int ScreenWidth = ::ScreenWidth - 3;
 108
 109    out << Title << endl;
 110    string::size_type Start = 0;
 111    while (Start < List.size())
 112    {
 113       string::size_type End;
 114       if (Start + ScreenWidth >= List.size())
 115          End = List.size();
 116       else
 117          End = List.rfind(' ',Start+ScreenWidth);
 118
 119       if (End == string::npos || End < Start)
 120          End = Start + ScreenWidth;
 121       out << "  " << string(List,Start,End - Start) << endl;
 122       Start = End + 1;
 123    }
 124    return false;
 125 }
 126                                                                         /*}}}*/
 127 // ShowBroken - Debugging aide                                          /*{{{*/
 128 // ---------------------------------------------------------------------
 129 /* This prints out the names of all the packages that are broken along
 130    with the name of each each broken dependency and a quite version
 131    description. */
 132 void ShowBroken(ostream &out,pkgDepCache &Cache)
 133 {
 134    out << "Sorry, but the following packages have unmet dependencies:" << endl;
 135    pkgCache::PkgIterator I = Cache.PkgBegin();
 136    for (;I.end() != true; I++)
 137    {
 138       if (Cache[I].InstBroken() == false)
 139           continue;
 140
 141       // Print out each package and the failed dependencies
 142       out <<"  " <<  I.Name() << ":";
 143       int Indent = strlen(I.Name()) + 3;
 144       bool First = true;
 145       if (Cache[I].InstVerIter(Cache).end() == true)
 146       {
 147          cout << endl;
 148          continue;
 149       }
 150
 151       for (pkgCache::DepIterator D = Cache[I].InstVerIter(Cache).DependsList(); D.end() == false;)
 152       {
 153          // Compute a single dependency element (glob or)
 154          pkgCache::DepIterator Start;
 155          pkgCache::DepIterator End;
 156          D.GlobOr(Start,End);
 157
 158          if (Cache.IsImportantDep(End) == false ||
 159              (Cache[End] & pkgDepCache::DepGInstall) == pkgDepCache::DepGInstall)
 160             continue;
 161
 162          if (First == false)
 163             for (int J = 0; J != Indent; J++)
 164                out << ' ';
 165          First = false;
 166
 167          out << ' ' << End.DepType() << ": " << End.TargetPkg().Name();
 168
 169          // Show a quick summary of the version requirements
 170          if (End.TargetVer() != 0)
 171             out << " (" << End.CompType() << " " << End.TargetVer() <<
 172             ")";
 173
 174          /* Show a summary of the target package if possible. In the case
 175           of virtual packages we show nothing */
 176
 177          pkgCache::PkgIterator Targ = End.TargetPkg();
 178          if (Targ->ProvidesList == 0)
 179          {
 180             out << " but ";
 181             pkgCache::VerIterator Ver = Cache[Targ].InstVerIter(Cache);
 182             if (Ver.end() == false)
 183                out << Ver.VerStr() << " is installed";
 184             else
 185             {
 186                if (Cache[Targ].CandidateVerIter(Cache).end() == true)
 187                {
 188                   if (Targ->ProvidesList == 0)
 189                      out << "it is not installable";
 190                   else
 191                      out << "it is a virtual package";
 192                }
 193                else
 194                   out << "it is not installed";
 195             }
 196          }
 197
 198          out << endl;
 199       }
 200    }
 201 }
 202                                                                         /*}}}*/
 203 // ShowNew - Show packages to newly install                             /*{{{*/
 204 // ---------------------------------------------------------------------
 205 /* */
 206 void ShowNew(ostream &out,pkgDepCache &Dep)
 207 {
 208    /* Print out a list of packages that are going to be removed extra
 209       to what the user asked */
 210    pkgCache::PkgIterator I = Dep.PkgBegin();
 211    string List;
 212    for (;I.end() != true; I++)
 213       if (Dep[I].NewInstall() == true)
 214          List += string(I.Name()) + " ";
 215    ShowList(out,"The following NEW packages will be installed:",List);
 216 }
 217                                                                         /*}}}*/
 218 // ShowDel - Show packages to delete                                    /*{{{*/
 219 // ---------------------------------------------------------------------
 220 /* */
 221 void ShowDel(ostream &out,pkgDepCache &Dep)
 222 {
 223    /* Print out a list of packages that are going to be removed extra
 224       to what the user asked */
 225    pkgCache::PkgIterator I = Dep.PkgBegin();
 226    string List;
 227    for (;I.end() != true; I++)
 228       if (Dep[I].Delete() == true)
 229          List += string(I.Name()) + " ";
 230
 231    ShowList(out,"The following packages will be REMOVED:",List);
 232 }
 233                                                                         /*}}}*/
 234 // ShowKept - Show kept packages                                        /*{{{*/
 235 // ---------------------------------------------------------------------
 236 /* */
 237 void ShowKept(ostream &out,pkgDepCache &Dep)
 238 {
 239    pkgCache::PkgIterator I = Dep.PkgBegin();
 240    string List;
 241    for (;I.end() != true; I++)
 242    {
 243       // Not interesting
 244       if (Dep[I].Upgrade() == true || Dep[I].Upgradable() == false ||
 245           I->CurrentVer == 0 || Dep[I].Delete() == true)
 246          continue;
 247
 248       List += string(I.Name()) + " ";
 249    }
 250    ShowList(out,"The following packages have been kept back",List);
 251 }
 252                                                                         /*}}}*/
 253 // ShowUpgraded - Show upgraded packages                                /*{{{*/
 254 // ---------------------------------------------------------------------
 255 /* */
 256 void ShowUpgraded(ostream &out,pkgDepCache &Dep)
 257 {
 258    pkgCache::PkgIterator I = Dep.PkgBegin();
 259    string List;
 260    for (;I.end() != true; I++)
 261    {
 262       // Not interesting
 263       if (Dep[I].Upgrade() == false || Dep[I].NewInstall() == true)
 264          continue;
 265
 266       List += string(I.Name()) + " ";
 267    }
 268    ShowList(out,"The following packages will be upgraded",List);
 269 }
 270                                                                         /*}}}*/
 271 // ShowHold - Show held but changed packages                            /*{{{*/
 272 // ---------------------------------------------------------------------
 273 /* */
 274 bool ShowHold(ostream &out,pkgDepCache &Dep)
 275 {
 276    pkgCache::PkgIterator I = Dep.PkgBegin();
 277    string List;
 278    for (;I.end() != true; I++)
 279    {
 280       if (Dep[I].InstallVer != (pkgCache::Version *)I.CurrentVer() &&
 281           I->SelectedState == pkgCache::State::Hold)
 282          List += string(I.Name()) + " ";
 283    }
 284
 285    return ShowList(out,"The following held packages will be changed:",List);
 286 }
 287                                                                         /*}}}*/
 288 // ShowEssential - Show an essential package warning                    /*{{{*/
 289 // ---------------------------------------------------------------------
 290 /* This prints out a warning message that is not to be ignored. It shows
 291    all essential packages and their dependents that are to be removed.
 292    It is insanely risky to remove the dependents of an essential package! */
 293 bool ShowEssential(ostream &out,pkgDepCache &Dep)
 294 {
 295    pkgCache::PkgIterator I = Dep.PkgBegin();
 296    string List;
 297    bool *Added = new bool[Dep.HeaderP->PackageCount];
 298    for (unsigned int I = 0; I != Dep.HeaderP->PackageCount; I++)
 299       Added[I] = false;
 300
 301    for (;I.end() != true; I++)
 302    {
 303       if ((I->Flags & pkgCache::Flag::Essential) != pkgCache::Flag::Essential)
 304          continue;
 305
 306       // The essential package is being removed
 307       if (Dep[I].Delete() == true)
 308       {
 309          if (Added[I->ID] == false)
 310          {
 311             Added[I->ID] = true;
 312             List += string(I.Name()) + " ";
 313          }
 314       }
 315
 316       if (I->CurrentVer == 0)
 317          continue;
 318
 319       // Print out any essential package depenendents that are to be removed
 320       for (pkgDepCache::DepIterator D = I.CurrentVer().DependsList(); D.end() == false; D++)
 321       {
 322          // Skip everything but depends
 323          if (D->Type != pkgCache::Dep::PreDepends &&
 324              D->Type != pkgCache::Dep::Depends)
 325             continue;
 326
 327          pkgCache::PkgIterator P = D.SmartTargetPkg();
 328          if (Dep[P].Delete() == true)
 329          {
 330             if (Added[P->ID] == true)
 331                continue;
 332             Added[P->ID] = true;
 333
 334             char S[300];
 335             sprintf(S,"%s (due to %s) ",P.Name(),I.Name());
 336             List += S;
 337          }
 338       }
 339    }
 340
 341    delete [] Added;
 342    if (List.empty() == false)
 343       out << "WARNING: The following essential packages will be removed" << endl;
 344    return ShowList(out,"This should NOT be done unless you know exactly what you are doing!",List);
 345 }
 346                                                                         /*}}}*/
 347 // Stats - Show some statistics                                         /*{{{*/
 348 // ---------------------------------------------------------------------
 349 /* */
 350 void Stats(ostream &out,pkgDepCache &Dep)
 351 {
 352    unsigned long Upgrade = 0;
 353    unsigned long Install = 0;
 354    for (pkgCache::PkgIterator I = Dep.PkgBegin(); I.end() == false; I++)
 355    {
 356       if (Dep[I].NewInstall() == true)
 357          Install++;
 358       else
 359          if (Dep[I].Upgrade() == true)
 360             Upgrade++;
 361    }
 362
 363    out << Upgrade << " packages upgraded, " <<
 364       Install << " newly installed, " <<
 365       Dep.DelCount() << " to remove and " <<
 366       Dep.KeepCount() << " not upgraded." << endl;
 367
 368    if (Dep.BadCount() != 0)
 369       out << Dep.BadCount() << " packages not fully installed or removed." << endl;
 370 }
 371                                                                         /*}}}*/
 372
 373 // class CacheFile - Cover class for some dependency cache functions    /*{{{*/
 374 // ---------------------------------------------------------------------
 375 /* */
 376 class CacheFile : public pkgCacheFile
 377 {
 378    public:
 379
 380    bool CheckDeps(bool AllowBroken = false);
 381    bool Open(bool WithLock = true)
 382    {
 383       OpTextProgress Prog(*_config);
 384       return pkgCacheFile::Open(Prog,WithLock);
 385    };
 386 };
 387                                                                         /*}}}*/
 388 // CacheFile::Open - Open the cache file                                /*{{{*/
 389 // ---------------------------------------------------------------------
 390 /* This routine generates the caches and then opens the dependency cache
 391    and verifies that the system is OK. */
 392 bool CacheFile::CheckDeps(bool AllowBroken)
 393 {
 394    if (_error->PendingError() == true)
 395       return false;
 396
 397    // Check that the system is OK
 398    if (Cache->DelCount() != 0 || Cache->InstCount() != 0)
 399       return _error->Error("Internal Error, non-zero counts");
 400
 401    // Apply corrections for half-installed packages
 402    if (pkgApplyStatus(*Cache) == false)
 403       return false;
 404
 405    // Nothing is broken
 406    if (Cache->BrokenCount() == 0 || AllowBroken == true)
 407       return true;
 408
 409    // Attempt to fix broken things
 410    if (_config->FindB("APT::Get::Fix-Broken",false) == true)
 411    {
 412       c1out << "Correcting dependencies..." << flush;
 413       if (pkgFixBroken(*Cache) == false || Cache->BrokenCount() != 0)
 414       {
 415          c1out << " failed." << endl;
 416          ShowBroken(c1out,*this);
 417
 418          return _error->Error("Unable to correct dependencies");
 419       }
 420       if (pkgMinimizeUpgrade(*Cache) == false)
 421          return _error->Error("Unable to minimize the upgrade set");
 422
 423       c1out << " Done" << endl;
 424    }
 425    else
 426    {
 427       c1out << "You might want to run `apt-get -f install' to correct these." << endl;
 428       ShowBroken(c1out,*this);
 429
 430       return _error->Error("Unmet dependencies. Try using -f.");
 431    }
 432
 433    return true;
 434 }
 435                                                                         /*}}}*/
 436
 437 // InstallPackages - Actually download and install the packages         /*{{{*/
 438 // ---------------------------------------------------------------------
 439 /* This displays the informative messages describing what is going to
 440    happen and then calls the download routines */
 441 bool InstallPackages(CacheFile &Cache,bool ShwKept,bool Ask = true,bool Saftey = true)
 442 {
 443    bool Fail = false;
 444    bool Essential = false;
 445
 446    // Show all the various warning indicators
 447    ShowDel(c1out,Cache);
 448    ShowNew(c1out,Cache);
 449    if (ShwKept == true)
 450       ShowKept(c1out,Cache);
 451    Fail |= !ShowHold(c1out,Cache);
 452    if (_config->FindB("APT::Get::Show-Upgraded",false) == true)
 453       ShowUpgraded(c1out,Cache);
 454    Essential = !ShowEssential(c1out,Cache);
 455    Fail |= Essential;
 456    Stats(c1out,Cache);
 457
 458    // Sanity check
 459    if (Cache->BrokenCount() != 0)
 460    {
 461       ShowBroken(c1out,Cache);
 462       return _error->Error("Internal Error, InstallPackages was called with broken packages!");
 463    }
 464
 465    if (Cache->DelCount() == 0 && Cache->InstCount() == 0 &&
 466        Cache->BadCount() == 0)
 467       return true;
 468
 469    // Run the simulator ..
 470    if (_config->FindB("APT::Get::Simulate") == true)
 471    {
 472       pkgSimulate PM(Cache);
 473       return PM.DoInstall();
 474    }
 475
 476    // Create the text record parser
 477    pkgRecords Recs(Cache);
 478    if (_error->PendingError() == true)
 479       return false;
 480
 481    // Lock the archive directory
 482    FileFd Lock;
 483    if (_config->FindB("Debug::NoLocking",false) == false)
 484    {
 485       Lock.Fd(GetLock(_config->FindDir("Dir::Cache::Archives") + "lock"));
 486       if (_error->PendingError() == true)
 487          return _error->Error("Unable to lock the download directory");
 488    }
 489
 490    // Create the download object
 491    AcqTextStatus Stat(ScreenWidth,_config->FindI("quiet",0));
 492    pkgAcquire Fetcher(&Stat);
 493
 494    // Read the source list
 495    pkgSourceList List;
 496    if (List.ReadMainList() == false)
 497       return _error->Error("The list of sources could not be read.");
 498
 499    // Create the package manager and prepare to download
 500    pkgDPkgPM PM(Cache);
 501    if (PM.GetArchives(&Fetcher,&List,&Recs) == false ||
 502        _error->PendingError() == true)
 503       return false;
 504
 505    // Display statistics
 506    unsigned long FetchBytes = Fetcher.FetchNeeded();
 507    unsigned long FetchPBytes = Fetcher.PartialPresent();
 508    unsigned long DebBytes = Fetcher.TotalNeeded();
 509    if (DebBytes != Cache->DebSize())
 510    {
 511       c0out << DebBytes << ',' << Cache->DebSize() << endl;
 512       c0out << "How odd.. The sizes didn't match, email apt@packages.debian.org" << endl;
 513    }
 514
 515    // Check for enough free space
 516    struct statfs Buf;
 517    string OutputDir = _config->FindDir("Dir::Cache::Archives");
 518    if (statfs(OutputDir.c_str(),&Buf) != 0)
 519       return _error->Errno("statfs","Couldn't determine free space in %s",
 520                            OutputDir.c_str());
 521    if (unsigned(Buf.f_bfree) < (FetchBytes - FetchPBytes)/Buf.f_bsize)
 522       return _error->Error("Sorry, you don't have enough free space in %s",
 523                            OutputDir.c_str());
 524
 525    // Number of bytes
 526    c1out << "Need to get ";
 527    if (DebBytes != FetchBytes)
 528       c1out << SizeToStr(FetchBytes) << "b/" << SizeToStr(DebBytes) << 'b';
 529    else
 530       c1out << SizeToStr(DebBytes) << 'b';
 531
 532    c1out << " of archives. After unpacking ";
 533
 534    // Size delta
 535    if (Cache->UsrSize() >= 0)
 536       c1out << SizeToStr(Cache->UsrSize()) << "b will be used." << endl;
 537    else
 538       c1out << SizeToStr(-1*Cache->UsrSize()) << "b will be freed." << endl;
 539
 540    if (_error->PendingError() == true)
 541       return false;
 542
 543    // Fail safe check
 544    if (_config->FindI("quiet",0) >= 2 ||
 545        _config->FindB("APT::Get::Assume-Yes",false) == true)
 546    {
 547       if (Fail == true && _config->FindB("APT::Get::Force-Yes",false) == false)
 548          return _error->Error("There are problems and -y was used without --force-yes");
 549    }
 550
 551    if (Essential == true && Saftey == true)
 552    {
 553       c2out << "You are about to do something potentially harmful" << endl;
 554       c2out << "To continue type in the phrase 'Yes, I understand this may be bad'" << endl;
 555       c2out << " ?] " << flush;
 556       if (AnalPrompt("Yes, I understand this may be bad") == false)
 557       {
 558          c2out << "Abort." << endl;
 559          exit(1);
 560       }
 561    }
 562    else
 563    {
 564       // Prompt to continue
 565       if (Ask == true || Fail == true)
 566       {
 567          if (_config->FindI("quiet",0) < 2 &&
 568              _config->FindB("APT::Get::Assume-Yes",false) == false)
 569          {
 570             c2out << "Do you want to continue? [Y/n] " << flush;
 571
 572             if (YnPrompt() == false)
 573             {
 574                c2out << "Abort." << endl;
 575                exit(1);
 576             }
 577          }
 578       }
 579    }
 580
 581    // Just print out the uris an exit if the --print-uris flag was used
 582    if (_config->FindB("APT::Get::Print-URIs") == true)
 583    {
 584       pkgAcquire::UriIterator I = Fetcher.UriBegin();
 585       for (; I != Fetcher.UriEnd(); I++)
 586          cout << '\'' << I->URI << "' " << flNotDir(I->Owner->DestFile) << ' ' <<
 587                I->Owner->FileSize << ' ' << I->Owner->MD5Sum() << endl;
 588       return true;
 589    }
 590
 591    // Run it
 592    if (_config->FindB("APT::Get::No-Download",false) == false)
 593       if( Fetcher.Run() == false)
 594          return false;
 595
 596    // Print out errors
 597    bool Failed = false;
 598    bool Transient = false;
 599    for (pkgAcquire::Item **I = Fetcher.ItemsBegin(); I != Fetcher.ItemsEnd(); I++)
 600    {
 601       if ((*I)->Status == pkgAcquire::Item::StatDone &&
 602           (*I)->Complete == true)
 603          continue;
 604
 605       (*I)->Finished();
 606
 607       if ((*I)->Status == pkgAcquire::Item::StatIdle)
 608       {
 609          Transient = true;
 610          Failed = true;
 611          continue;
 612       }
 613
 614       cerr << "Failed to fetch " << (*I)->DescURI() << endl;
 615       cerr << "  " << (*I)->ErrorText << endl;
 616       Failed = true;
 617    }
 618
 619    if (_config->FindB("APT::Get::Download-Only",false) == true)
 620    {
 621       if (Failed == false && _config->FindB("APT::Get::Fix-Missing",false) == false)
 622          return _error->Error("Some files failed to download");
 623       return true;
 624    }
 625
 626    if (Failed == true && _config->FindB("APT::Get::Fix-Missing",false) == false)
 627    {
 628       if (Transient == true)
 629       {
 630          c2out << "Upgrading with disk swapping is not supported in this version." << endl;
 631          c2out << "Try running multiple times with --fix-missing" << endl;
 632       }
 633
 634       return _error->Error("Unable to fetch some archives, maybe try with --fix-missing?");
 635    }
 636
 637    // Try to deal with missing package files
 638    if (PM.FixMissing() == false)
 639    {
 640       cerr << "Unable to correct missing packages." << endl;
 641       return _error->Error("Aborting Install.");
 642    }
 643
 644    Cache.ReleaseLock();
 645    return PM.DoInstall();
 646 }
 647                                                                         /*}}}*/
 648
 649 // DoUpdate - Update the package lists                                  /*{{{*/
 650 // ---------------------------------------------------------------------
 651 /* */
 652 bool DoUpdate(CommandLine &)
 653 {
 654    // Get the source list
 655    pkgSourceList List;
 656    if (List.ReadMainList() == false)
 657       return false;
 658
 659    // Lock the list directory
 660    FileFd Lock;
 661    if (_config->FindB("Debug::NoLocking",false) == false)
 662    {
 663       Lock.Fd(GetLock(_config->FindDir("Dir::State::Lists") + "lock"));
 664       if (_error->PendingError() == true)
 665          return _error->Error("Unable to lock the list directory");
 666    }
 667
 668    // Create the download object
 669    AcqTextStatus Stat(ScreenWidth,_config->FindI("quiet",0));
 670    pkgAcquire Fetcher(&Stat);
 671
 672    // Populate it with the source selection
 673    pkgSourceList::const_iterator I;
 674    for (I = List.begin(); I != List.end(); I++)
 675    {
 676       new pkgAcqIndex(&Fetcher,I);
 677       if (_error->PendingError() == true)
 678          return false;
 679    }
 680
 681    // Run it
 682    if (Fetcher.Run() == false)
 683       return false;
 684
 685    // Clean out any old list files
 686    if (Fetcher.Clean(_config->FindDir("Dir::State::lists")) == false ||
 687        Fetcher.Clean(_config->FindDir("Dir::State::lists") + "partial/") == false)
 688       return false;
 689
 690    // Prepare the cache.
 691    CacheFile Cache;
 692    if (Cache.Open() == false)
 693       return false;
 694
 695    return true;
 696 }
 697                                                                         /*}}}*/
 698 // DoUpgrade - Upgrade all packages                                     /*{{{*/
 699 // ---------------------------------------------------------------------
 700 /* Upgrade all packages without installing new packages or erasing old
 701    packages */
 702 bool DoUpgrade(CommandLine &CmdL)
 703 {
 704    CacheFile Cache;
 705    if (Cache.Open() == false || Cache.CheckDeps() == false)
 706       return false;
 707
 708    // Do the upgrade
 709    if (pkgAllUpgrade(Cache) == false)
 710    {
 711       ShowBroken(c1out,Cache);
 712       return _error->Error("Internal Error, AllUpgrade broke stuff");
 713    }
 714
 715    return InstallPackages(Cache,true);
 716 }
 717                                                                         /*}}}*/
 718 // DoInstall - Install packages from the command line                   /*{{{*/
 719 // ---------------------------------------------------------------------
 720 /* Install named packages */
 721 bool DoInstall(CommandLine &CmdL)
 722 {
 723    CacheFile Cache;
 724    if (Cache.Open() == false || Cache.CheckDeps(CmdL.FileSize() != 1) == false)
 725       return false;
 726
 727    // Enter the special broken fixing mode if the user specified arguments
 728    bool BrokenFix = false;
 729    if (Cache->BrokenCount() != 0)
 730       BrokenFix = true;
 731
 732    unsigned int ExpectedInst = 0;
 733    unsigned int Packages = 0;
 734    pkgProblemResolver Fix(Cache);
 735
 736    bool DefRemove = false;
 737    if (strcasecmp(CmdL.FileList[0],"remove") == 0)
 738       DefRemove = true;
 739
 740    for (const char **I = CmdL.FileList + 1; *I != 0; I++)
 741    {
 742       // Duplicate the string
 743       unsigned int Length = strlen(*I);
 744       char S[300];
 745       if (Length >= sizeof(S))
 746          continue;
 747       strcpy(S,*I);
 748
 749       // See if we are removing the package
 750       bool Remove = DefRemove;
 751       if (Cache->FindPkg(S).end() == true)
 752       {
 753          // Handle an optional end tag indicating what to do
 754          if (S[Length - 1] == '-')
 755          {
 756             Remove = true;
 757             S[--Length] = 0;
 758          }
 759          if (S[Length - 1] == '+')
 760          {
 761             Remove = false;
 762             S[--Length] = 0;
 763          }
 764       }
 765
 766       // Locate the package
 767       pkgCache::PkgIterator Pkg = Cache->FindPkg(S);
 768       Packages++;
 769       if (Pkg.end() == true)
 770          return _error->Error("Couldn't find package %s",S);
 771
 772       // Handle the no-upgrade case
 773       if (_config->FindB("APT::Get::no-upgrade",false) == true &&
 774           Pkg->CurrentVer != 0)
 775       {
 776          c1out << "Skipping " << Pkg.Name() << ", it is already installed and no-upgrade is set." << endl;
 777          continue;
 778       }
 779
 780       // Check if there is something new to install
 781       pkgDepCache::StateCache &State = (*Cache)[Pkg];
 782       if (State.CandidateVer == 0)
 783       {
 784          if (Pkg->ProvidesList != 0)
 785          {
 786             c1out << "Package " << S << " is a virtual package provided by:" << endl;
 787
 788             pkgCache::PrvIterator I = Pkg.ProvidesList();
 789             for (; I.end() == false; I++)
 790             {
 791                pkgCache::PkgIterator Pkg = I.OwnerPkg();
 792
 793                if ((*Cache)[Pkg].CandidateVerIter(*Cache) == I.OwnerVer())
 794                {
 795                   if ((*Cache)[Pkg].Install() == true && (*Cache)[Pkg].NewInstall() == false)
 796                      c1out << "  " << Pkg.Name() << " " << I.OwnerVer().VerStr() <<
 797                      " [Installed]"<< endl;
 798                   else
 799                      c1out << "  " << Pkg.Name() << " " << I.OwnerVer().VerStr() << endl;
 800                }
 801             }
 802             c1out << "You should explicly select one to install." << endl;
 803          }
 804          else
 805          {
 806             c1out << "Package " << S << " has no available version, but exists in the database." << endl;
 807             c1out << "This typically means that the package was mentioned in a dependency and " << endl;
 808             c1out << "never uploaded, or that it is an obsolete package." << endl;
 809
 810             string List;
 811             pkgCache::DepIterator Dep = Pkg.RevDependsList();
 812             for (; Dep.end() == false; Dep++)
 813             {
 814                if (Dep->Type != pkgCache::Dep::Replaces)
 815                   continue;
 816                List += string(Dep.ParentPkg().Name()) + " ";
 817             }
 818             ShowList(c1out,"However the following packages replace it:",List);
 819          }
 820
 821          return _error->Error("Package %s has no installation candidate",S);
 822       }
 823
 824       Fix.Protect(Pkg);
 825       if (Remove == true)
 826       {
 827          Fix.Remove(Pkg);
 828          Cache->MarkDelete(Pkg);
 829          continue;
 830       }
 831
 832       // Install it
 833       Cache->MarkInstall(Pkg,false);
 834       if (State.Install() == false)
 835          c1out << "Sorry, " << S << " is already the newest version"  << endl;
 836       else
 837          ExpectedInst++;
 838
 839       // Install it with autoinstalling enabled.
 840       if (State.InstBroken() == true && BrokenFix == false)
 841          Cache->MarkInstall(Pkg,true);
 842    }
 843
 844    /* If we are in the Broken fixing mode we do not attempt to fix the
 845       problems. This is if the user invoked install without -f and gave
 846       packages */
 847    if (BrokenFix == true && Cache->BrokenCount() != 0)
 848    {
 849       c1out << "You might want to run `apt-get -f install' to correct these:" << endl;
 850       ShowBroken(c1out,Cache);
 851
 852       return _error->Error("Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).");
 853    }
 854
 855    // Call the scored problem resolver
 856    Fix.InstallProtect();
 857    if (Fix.Resolve(true) == false)
 858       _error->Discard();
 859
 860    // Now we check the state of the packages,
 861    if (Cache->BrokenCount() != 0)
 862    {
 863       c1out << "Some packages could not be installed. This may mean that you have" << endl;
 864       c1out << "requested an impossible situation or if you are using the unstable" << endl;
 865       c1out << "distribution that some required packages have not yet been created" << endl;
 866       c1out << "or been moved out of Incoming." << endl;
 867       if (Packages == 1)
 868       {
 869          c1out << endl;
 870          c1out << "Since you only requested a single operation it is extremely likely that" << endl;
 871          c1out << "the package is simply not installable and a bug report against" << endl;
 872          c1out << "that package should be filed." << endl;
 873       }
 874
 875       c1out << "The following information may help to resolve the situation:" << endl;
 876       c1out << endl;
 877       ShowBroken(c1out,Cache);
 878       return _error->Error("Sorry, broken packages");
 879    }
 880
 881    /* Print out a list of packages that are going to be installed extra
 882       to what the user asked */
 883    if (Cache->InstCount() != ExpectedInst)
 884    {
 885       string List;
 886       pkgCache::PkgIterator I = Cache->PkgBegin();
 887       for (;I.end() != true; I++)
 888       {
 889          if ((*Cache)[I].Install() == false)
 890             continue;
 891
 892          const char **J;
 893          for (J = CmdL.FileList + 1; *J != 0; J++)
 894             if (strcmp(*J,I.Name()) == 0)
 895                 break;
 896
 897          if (*J == 0)
 898             List += string(I.Name()) + " ";
 899       }
 900
 901       ShowList(c1out,"The following extra packages will be installed:",List);
 902    }
 903
 904    // See if we need to prompt
 905    if (Cache->InstCount() == ExpectedInst && Cache->DelCount() == 0)
 906       return InstallPackages(Cache,false,false);
 907
 908    return InstallPackages(Cache,false);
 909 }
 910                                                                         /*}}}*/
 911 // DoDistUpgrade - Automatic smart upgrader                             /*{{{*/
 912 // ---------------------------------------------------------------------
 913 /* Intelligent upgrader that will install and remove packages at will */
 914 bool DoDistUpgrade(CommandLine &CmdL)
 915 {
 916    CacheFile Cache;
 917    if (Cache.Open() == false || Cache.CheckDeps() == false)
 918       return false;
 919
 920    c0out << "Calculating Upgrade... " << flush;
 921    if (pkgDistUpgrade(*Cache) == false)
 922    {
 923       c0out << "Failed" << endl;
 924       ShowBroken(c1out,Cache);
 925       return false;
 926    }
 927
 928    c0out << "Done" << endl;
 929
 930    return InstallPackages(Cache,true);
 931 }
 932                                                                         /*}}}*/
 933 // DoDSelectUpgrade - Do an upgrade by following dselects selections    /*{{{*/
 934 // ---------------------------------------------------------------------
 935 /* Follows dselect's selections */
 936 bool DoDSelectUpgrade(CommandLine &CmdL)
 937 {
 938    CacheFile Cache;
 939    if (Cache.Open() == false || Cache.CheckDeps() == false)
 940       return false;
 941
 942    // Install everything with the install flag set
 943    pkgCache::PkgIterator I = Cache->PkgBegin();
 944    for (;I.end() != true; I++)
 945    {
 946       /* Install the package only if it is a new install, the autoupgrader
 947          will deal with the rest */
 948       if (I->SelectedState == pkgCache::State::Install)
 949          Cache->MarkInstall(I,false);
 950    }
 951
 952    /* Now install their deps too, if we do this above then order of
 953       the status file is significant for | groups */
 954    for (I = Cache->PkgBegin();I.end() != true; I++)
 955    {
 956       /* Install the package only if it is a new install, the autoupgrader
 957          will deal with the rest */
 958       if (I->SelectedState == pkgCache::State::Install)
 959          Cache->MarkInstall(I,true);
 960    }
 961
 962    // Apply erasures now, they override everything else.
 963    for (I = Cache->PkgBegin();I.end() != true; I++)
 964    {
 965       // Remove packages
 966       if (I->SelectedState == pkgCache::State::DeInstall ||
 967           I->SelectedState == pkgCache::State::Purge)
 968          Cache->MarkDelete(I);
 969    }
 970
 971    /* Resolve any problems that dselect created, allupgrade cannot handle
 972       such things. We do so quite agressively too.. */
 973    if (Cache->BrokenCount() != 0)
 974    {
 975       pkgProblemResolver Fix(Cache);
 976
 977       // Hold back held packages.
 978       if (_config->FindB("APT::Ingore-Hold",false) == false)
 979       {
 980          for (pkgCache::PkgIterator I = Cache->PkgBegin(); I.end() == false; I++)
 981          {
 982             if (I->SelectedState == pkgCache::State::Hold)
 983             {
 984                Fix.Protect(I);
 985                Cache->MarkKeep(I);
 986             }
 987          }
 988       }
 989
 990       if (Fix.Resolve() == false)
 991       {
 992          ShowBroken(c1out,Cache);
 993          return _error->Error("Internal Error, problem resolver broke stuff");
 994       }
 995    }
 996
 997    // Now upgrade everything
 998    if (pkgAllUpgrade(Cache) == false)
 999    {
1000       ShowBroken(c1out,Cache);
1001       return _error->Error("Internal Error, problem resolver broke stuff");
1002    }
1003
1004    return InstallPackages(Cache,false);
1005 }
1006                                                                         /*}}}*/
1007 // DoClean - Remove download archives                                   /*{{{*/
1008 // ---------------------------------------------------------------------
1009 /* */
1010 bool DoClean(CommandLine &CmdL)
1011 {
1012    pkgAcquire Fetcher;
1013    Fetcher.Clean(_config->FindDir("Dir::Cache::archives"));
1014    Fetcher.Clean(_config->FindDir("Dir::Cache::archives") + "partial/");
1015    return true;
1016 }
1017                                                                         /*}}}*/
1018 // DoAutoClean - Smartly remove downloaded archives                     /*{{{*/
1019 // ---------------------------------------------------------------------
1020 /* This is similar to clean but it only purges things that cannot be
1021    downloaded, that is old versions of cached packages. */
1022 class LogCleaner : public pkgArchiveCleaner
1023 {
1024    protected:
1025    virtual void Erase(const char *File,string Pkg,string Ver,struct stat &St)
1026    {
1027       cout << "Del " << Pkg << " " << Ver << " [" << SizeToStr(St.st_size) << "b]" << endl;
1028    };
1029 };
1030
1031 bool DoAutoClean(CommandLine &CmdL)
1032 {
1033    CacheFile Cache;
1034    if (Cache.Open() == false)
1035       return false;
1036
1037    LogCleaner Cleaner;
1038
1039    return Cleaner.Go(_config->FindDir("Dir::Cache::archives"),*Cache) &&
1040       Cleaner.Go(_config->FindDir("Dir::Cache::archives") + "partial/",*Cache);
1041 }
1042                                                                         /*}}}*/
1043 // DoCheck - Perform the check operation                                /*{{{*/
1044 // ---------------------------------------------------------------------
1045 /* Opening automatically checks the system, this command is mostly used
1046    for debugging */
1047 bool DoCheck(CommandLine &CmdL)
1048 {
1049    CacheFile Cache;
1050    Cache.Open();
1051    Cache.CheckDeps();
1052
1053    return true;
1054 }
1055                                                                         /*}}}*/
1056 // DoSource - Fetch a source archive                                    /*{{{*/
1057 // ---------------------------------------------------------------------
1058 /* Fetch souce packages */
1059 struct DscFile
1060 {
1061    string Package;
1062    string Version;
1063    string Dsc;
1064 };
1065
1066 bool DoSource(CommandLine &CmdL)
1067 {
1068    CacheFile Cache;
1069    if (Cache.Open(false) == false)
1070       return false;
1071
1072    if (CmdL.FileSize() <= 1)
1073       return _error->Error("Must specify at least one package to fetch source for");
1074
1075    // Read the source list
1076    pkgSourceList List;
1077    if (List.ReadMainList() == false)
1078       return _error->Error("The list of sources could not be read.");
1079
1080    // Create the text record parsers
1081    pkgRecords Recs(Cache);
1082    pkgSrcRecords SrcRecs(List);
1083    if (_error->PendingError() == true)
1084       return false;
1085
1086    // Create the download object
1087    AcqTextStatus Stat(ScreenWidth,_config->FindI("quiet",0));
1088    pkgAcquire Fetcher(&Stat);
1089
1090    DscFile *Dsc = new DscFile[CmdL.FileSize()];
1091
1092    // Load the requestd sources into the fetcher
1093    unsigned J = 0;
1094    for (const char **I = CmdL.FileList + 1; *I != 0; I++, J++)
1095    {
1096       string Src;
1097
1098       /* Lookup the version of the package we would install if we were to
1099          install a version and determine the source package name, then look
1100          in the archive for a source package of the same name. In theory
1101          we could stash the version string as well and match that too but
1102          today there aren't multi source versions in the archive. */
1103       pkgCache::PkgIterator Pkg = Cache->FindPkg(*I);
1104       if (Pkg.end() == false)
1105       {
1106          pkgCache::VerIterator Ver = Cache->GetCandidateVer(Pkg);
1107          if (Ver.end() == false)
1108          {
1109             pkgRecords::Parser &Parse = Recs.Lookup(Ver.FileList());
1110             Src = Parse.SourcePkg();
1111          }
1112       }
1113
1114       // No source package name..
1115       if (Src.empty() == true)
1116          Src = *I;
1117
1118       // The best hit
1119       pkgSrcRecords::Parser *Last = 0;
1120       unsigned long Offset = 0;
1121       string Version;
1122       bool IsMatch = false;
1123
1124       // Iterate over all of the hits
1125       pkgSrcRecords::Parser *Parse;
1126       SrcRecs.Restart();
1127       while ((Parse = SrcRecs.Find(Src.c_str(),false)) != 0)
1128       {
1129          string Ver = Parse->Version();
1130
1131          // Skip name mismatches
1132          if (IsMatch == true && Parse->Package() != Src)
1133             continue;
1134
1135          // Newer version or an exact match
1136          if (Last == 0 || pkgVersionCompare(Version,Ver) < 0 ||
1137              (Parse->Package() == Src && IsMatch == false))
1138          {
1139             IsMatch = Parse->Package() == Src;
1140             Last = Parse;
1141             Offset = Parse->Offset();
1142             Version = Ver;
1143          }
1144       }
1145
1146       if (Last == 0)
1147          return _error->Error("Unable to find a source package for %s",Src.c_str());
1148
1149       // Back track
1150       vector<pkgSrcRecords::File> Lst;
1151       if (Last->Jump(Offset) == false || Last->Files(Lst) == false)
1152          return false;
1153
1154       // Load them into the fetcher
1155       for (vector<pkgSrcRecords::File>::const_iterator I = Lst.begin();
1156            I != Lst.end(); I++)
1157       {
1158          // Try to guess what sort of file it is we are getting.
1159          string Comp;
1160          if (I->Path.find(".dsc") != string::npos)
1161          {
1162             Comp = "dsc";
1163             Dsc[J].Package = Last->Package();
1164             Dsc[J].Version = Last->Version();
1165             Dsc[J].Dsc = flNotDir(I->Path);
1166          }
1167
1168          if (I->Path.find(".tar.gz") != string::npos)
1169             Comp = "tar";
1170          if (I->Path.find(".diff.gz") != string::npos)
1171             Comp = "diff";
1172
1173          new pkgAcqFile(&Fetcher,Last->Source()->ArchiveURI(I->Path),
1174                         I->MD5Hash,I->Size,Last->Source()->SourceInfo(Src,
1175                         Last->Version(),Comp),Src);
1176       }
1177    }
1178
1179    // Display statistics
1180    unsigned long FetchBytes = Fetcher.FetchNeeded();
1181    unsigned long FetchPBytes = Fetcher.PartialPresent();
1182    unsigned long DebBytes = Fetcher.TotalNeeded();
1183
1184    // Check for enough free space
1185    struct statfs Buf;
1186    string OutputDir = ".";
1187    if (statfs(OutputDir.c_str(),&Buf) != 0)
1188       return _error->Errno("statfs","Couldn't determine free space in %s",
1189                            OutputDir.c_str());
1190    if (unsigned(Buf.f_bfree) < (FetchBytes - FetchPBytes)/Buf.f_bsize)
1191       return _error->Error("Sorry, you don't have enough free space in %s",
1192                            OutputDir.c_str());
1193
1194    // Number of bytes
1195    c1out << "Need to get ";
1196    if (DebBytes != FetchBytes)
1197       c1out << SizeToStr(FetchBytes) << "b/" << SizeToStr(DebBytes) << 'b';
1198    else
1199       c1out << SizeToStr(DebBytes) << 'b';
1200    c1out << " of source archives." << endl;
1201
1202    if (_config->FindB("APT::Get::Simulate",false) == true)
1203    {
1204       for (unsigned I = 0; I != J; I++)
1205          cout << "Fetch Source " << Dsc[I].Package << endl;
1206       return true;
1207    }
1208
1209    // Just print out the uris an exit if the --print-uris flag was used
1210    if (_config->FindB("APT::Get::Print-URIs") == true)
1211    {
1212       pkgAcquire::UriIterator I = Fetcher.UriBegin();
1213       for (; I != Fetcher.UriEnd(); I++)
1214          cout << '\'' << I->URI << "' " << flNotDir(I->Owner->DestFile) << ' ' <<
1215                I->Owner->FileSize << ' ' << I->Owner->MD5Sum() << endl;
1216       return true;
1217    }
1218
1219    // Run it
1220    if (Fetcher.Run() == false)
1221       return false;
1222
1223    // Print error messages
1224    bool Failed = false;
1225    for (pkgAcquire::Item **I = Fetcher.ItemsBegin(); I != Fetcher.ItemsEnd(); I++)
1226    {
1227       if ((*I)->Status == pkgAcquire::Item::StatDone &&
1228           (*I)->Complete == true)
1229          continue;
1230
1231       cerr << "Failed to fetch " << (*I)->DescURI() << endl;
1232       cerr << "  " << (*I)->ErrorText << endl;
1233       Failed = true;
1234    }
1235    if (Failed == true)
1236       return _error->Error("Failed to fetch some archives.");
1237
1238    if (_config->FindB("APT::Get::Download-only",false) == true)
1239       return true;
1240
1241    // Unpack the sources
1242    pid_t Process = ExecFork();
1243
1244    if (Process == 0)
1245    {
1246       for (unsigned I = 0; I != J; I++)
1247       {
1248          string Dir = Dsc[I].Package + '-' + pkgBaseVersion(Dsc[I].Version.c_str());
1249
1250          // See if the package is already unpacked
1251          struct stat Stat;
1252          if (stat(Dir.c_str(),&Stat) == 0 &&
1253              S_ISDIR(Stat.st_mode) != 0)
1254          {
1255             c0out << "Skipping unpack of already unpacked source in " << Dir << endl;
1256          }
1257          else
1258          {
1259             // Call dpkg-source
1260             char S[500];
1261             snprintf(S,sizeof(S),"%s -x %s",
1262                      _config->Find("Dir::Bin::dpkg-source","dpkg-source").c_str(),
1263                      Dsc[I].Dsc.c_str());
1264             if (system(S) != 0)
1265             {
1266                cerr << "Unpack command '" << S << "' failed." << endl;
1267                _exit(1);
1268             }
1269          }
1270
1271          // Try to compile it with dpkg-buildpackage
1272          if (_config->FindB("APT::Get::Compile",false) == true)
1273          {
1274             // Call dpkg-buildpackage
1275             char S[500];
1276             snprintf(S,sizeof(S),"cd %s && %s %s",
1277                      Dir.c_str(),
1278                      _config->Find("Dir::Bin::dpkg-buildpackage","dpkg-buildpackage").c_str(),
1279                      _config->Find("DPkg::Build-Options","-b -uc").c_str());
1280
1281             if (system(S) != 0)
1282             {
1283                cerr << "Build command '" << S << "' failed." << endl;
1284                _exit(1);
1285             }
1286          }
1287       }
1288
1289       _exit(0);
1290    }
1291
1292    // Wait for the subprocess
1293    int Status = 0;
1294    while (waitpid(Process,&Status,0) != Process)
1295    {
1296       if (errno == EINTR)
1297          continue;
1298       return _error->Errno("waitpid","Couldn't wait for subprocess");
1299    }
1300
1301    if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0)
1302       return _error->Error("Child process failed");
1303
1304    return true;
1305 }
1306                                                                         /*}}}*/
1307
1308 // ShowHelp - Show a help screen                                        /*{{{*/
1309 // ---------------------------------------------------------------------
1310 /* */
1311 bool ShowHelp(CommandLine &CmdL)
1312 {
1313    cout << PACKAGE << ' ' << VERSION << " for " << ARCHITECTURE <<
1314        " compiled on " << __DATE__ << "  " << __TIME__ << endl;
1315    if (_config->FindB("version") == true)
1316       return 100;
1317
1318    cout << "Usage: apt-get [options] command" << endl;
1319    cout << "       apt-get [options] install pkg1 [pkg2 ...]" << endl;
1320    cout << endl;
1321    cout << "apt-get is a simple command line interface for downloading and" << endl;
1322    cout << "installing packages. The most frequently used commands are update" << endl;
1323    cout << "and install." << endl;
1324    cout << endl;
1325    cout << "Commands:" << endl;
1326    cout << "   update - Retrieve new lists of packages" << endl;
1327    cout << "   upgrade - Perform an upgrade" << endl;
1328    cout << "   install - Install new packages (pkg is libc6 not libc6.deb)" << endl;
1329    cout << "   remove - Remove packages" << endl;
1330    cout << "   source - Download source archives" << endl;
1331    cout << "   dist-upgrade - Distribution upgrade, see apt-get(8)" << endl;
1332    cout << "   dselect-upgrade - Follow dselect selections" << endl;
1333    cout << "   clean - Erase downloaded archive files" << endl;
1334    cout << "   autoclean - Erase old downloaded archive files" << endl;
1335    cout << "   check - Verify that there are no broken dependencies" << endl;
1336    cout << endl;
1337    cout << "Options:" << endl;
1338    cout << "  -h  This help text." << endl;
1339    cout << "  -q  Loggable output - no progress indicator" << endl;
1340    cout << "  -qq No output except for errors" << endl;
1341    cout << "  -d  Download only - do NOT install or unpack archives" << endl;
1342    cout << "  -s  No-act. Perform ordering simulation" << endl;
1343    cout << "  -y  Assume Yes to all queries and do not prompt" << endl;
1344    cout << "  -f  Attempt to continue if the integrity check fails" << endl;
1345    cout << "  -m  Attempt to continue if archives are unlocatable" << endl;
1346    cout << "  -u  Show a list of upgraded packages as well" << endl;
1347    cout << "  -b  Build the source package after fetching it" << endl;
1348    cout << "  -c=? Read this configuration file" << endl;
1349    cout << "  -o=? Set an arbitary configuration option, eg -o dir::cache=/tmp" << endl;
1350    cout << "See the apt-get(8), sources.list(5) and apt.conf(5) manual" << endl;
1351    cout << "pages for more information." << endl;
1352    return 100;
1353 }
1354                                                                         /*}}}*/
1355 // GetInitialize - Initialize things for apt-get                        /*{{{*/
1356 // ---------------------------------------------------------------------
1357 /* */
1358 void GetInitialize()
1359 {
1360    _config->Set("quiet",0);
1361    _config->Set("help",false);
1362    _config->Set("APT::Get::Download-Only",false);
1363    _config->Set("APT::Get::Simulate",false);
1364    _config->Set("APT::Get::Assume-Yes",false);
1365    _config->Set("APT::Get::Fix-Broken",false);
1366    _config->Set("APT::Get::Force-Yes",false);
1367 }
1368                                                                         /*}}}*/
1369 // SigWinch - Window size change signal handler                         /*{{{*/
1370 // ---------------------------------------------------------------------
1371 /* */
1372 void SigWinch(int)
1373 {
1374    // Riped from GNU ls
1375 #ifdef TIOCGWINSZ
1376    struct winsize ws;
1377
1378    if (ioctl(1, TIOCGWINSZ, &ws) != -1 && ws.ws_col >= 5)
1379       ScreenWidth = ws.ws_col - 1;
1380 #endif
1381 }
1382                                                                         /*}}}*/
1383
1384 int main(int argc,const char *argv[])
1385 {
1386    CommandLine::Args Args[] = {
1387       {'h',"help","help",0},
1388       {'v',"version","version",0},
1389       {'q',"quiet","quiet",CommandLine::IntLevel},
1390       {'q',"silent","quiet",CommandLine::IntLevel},
1391       {'d',"download-only","APT::Get::Download-Only",0},
1392       {'b',"compile","APT::Get::Compile",0},
1393       {'b',"build","APT::Get::Compile",0},
1394       {'s',"simulate","APT::Get::Simulate",0},
1395       {'s',"just-print","APT::Get::Simulate",0},
1396       {'s',"recon","APT::Get::Simulate",0},
1397       {'s',"no-act","APT::Get::Simulate",0},
1398       {'y',"yes","APT::Get::Assume-Yes",0},
1399       {'y',"assume-yes","APT::Get::Assume-Yes",0},
1400       {'f',"fix-broken","APT::Get::Fix-Broken",0},
1401       {'u',"show-upgraded","APT::Get::Show-Upgraded",0},
1402       {'m',"ignore-missing","APT::Get::Fix-Missing",0},
1403       {0,"no-download","APT::Get::No-Download",0},
1404       {0,"fix-missing","APT::Get::Fix-Missing",0},
1405       {0,"ignore-hold","APT::Ingore-Hold",0},
1406       {0,"no-upgrade","APT::Get::no-upgrade",0},
1407       {0,"force-yes","APT::Get::force-yes",0},
1408       {0,"print-uris","APT::Get::Print-URIs",0},
1409       {'c',"config-file",0,CommandLine::ConfigFile},
1410       {'o',"option",0,CommandLine::ArbItem},
1411       {0,0,0,0}};
1412    CommandLine::Dispatch Cmds[] = {{"update",&DoUpdate},
1413                                    {"upgrade",&DoUpgrade},
1414                                    {"install",&DoInstall},
1415                                    {"remove",&DoInstall},
1416                                    {"dist-upgrade",&DoDistUpgrade},
1417                                    {"dselect-upgrade",&DoDSelectUpgrade},
1418                                    {"clean",&DoClean},
1419                                    {"autoclean",&DoAutoClean},
1420                                    {"check",&DoCheck},
1421                                    {"source",&DoSource},
1422                                    {"help",&ShowHelp},
1423                                    {0,0}};
1424
1425    // Parse the command line and initialize the package library
1426    CommandLine CmdL(Args,_config);
1427    if (pkgInitialize(*_config) == false ||
1428        CmdL.Parse(argc,argv) == false)
1429    {
1430       _error->DumpErrors();
1431       return 100;
1432    }
1433
1434    // See if the help should be shown
1435    if (_config->FindB("help") == true ||
1436        _config->FindB("version") == true ||
1437        CmdL.FileSize() == 0)
1438       return ShowHelp(CmdL);
1439
1440    // Deal with stdout not being a tty
1441    if (ttyname(STDOUT_FILENO) == 0 && _config->FindI("quiet",0) < 1)
1442       _config->Set("quiet","1");
1443
1444    // Setup the output streams
1445    c0out.rdbuf(cout.rdbuf());
1446    c1out.rdbuf(cout.rdbuf());
1447    c2out.rdbuf(cout.rdbuf());
1448    if (_config->FindI("quiet",0) > 0)
1449       c0out.rdbuf(devnull.rdbuf());
1450    if (_config->FindI("quiet",0) > 1)
1451       c1out.rdbuf(devnull.rdbuf());
1452
1453    // Setup the signals
1454    signal(SIGPIPE,SIG_IGN);
1455    signal(SIGWINCH,SigWinch);
1456    SigWinch(0);
1457
1458    // Match the operation
1459    CmdL.DispatchArg(Cmds);
1460
1461    // Print any errors or warnings found during parsing
1462    if (_error->empty() == false)
1463    {
1464       bool Errors = _error->PendingError();
1465       _error->DumpErrors();
1466       return Errors == true?100:0;
1467    }
1468
1469    return 0;
1470 }