cmdline/apt-get.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: apt-get.cc,v 1.156 2004/08/28 01:05:16 mdz 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 - Powerful 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 <config.h>
  29
  30 #include <apt-pkg/acquire-item.h>
  31 #include <apt-pkg/algorithms.h>
  32 #include <apt-pkg/aptconfiguration.h>
  33 #include <apt-pkg/cachefile.h>
  34 #include <apt-pkg/cacheset.h>
  35 #include <apt-pkg/clean.h>
  36 #include <apt-pkg/cmndline.h>
  37 #include <apt-pkg/debmetaindex.h>
  38 #include <apt-pkg/depcache.h>
  39 #include <apt-pkg/error.h>
  40 #include <apt-pkg/fileutl.h>
  41 #include <apt-pkg/indexfile.h>
  42 #include <apt-pkg/init.h>
  43 #include <apt-pkg/md5.h>
  44 #include <apt-pkg/metaindex.h>
  45 #include <apt-pkg/pkgrecords.h>
  46 #include <apt-pkg/pkgsystem.h>
  47 #include <apt-pkg/progress.h>
  48 #include <apt-pkg/sourcelist.h>
  49 #include <apt-pkg/srcrecords.h>
  50 #include <apt-pkg/strutl.h>
  51 #include <apt-pkg/version.h>
  52 #include <apt-pkg/acquire.h>
  53 #include <apt-pkg/configuration.h>
  54 #include <apt-pkg/macros.h>
  55 #include <apt-pkg/pkgcache.h>
  56 #include <apt-pkg/cacheiterators.h>
  57 #include <apt-pkg/upgrade.h>
  58 #include <apt-pkg/sptr.h>
  59
  60 #include <apt-private/acqprogress.h>
  61 #include <apt-private/private-cacheset.h>
  62 #include <apt-private/private-cachefile.h>
  63 #include <apt-private/private-cmndline.h>
  64 #include <apt-private/private-download.h>
  65 #include <apt-private/private-install.h>
  66 #include <apt-private/private-main.h>
  67 #include <apt-private/private-moo.h>
  68 #include <apt-private/private-output.h>
  69 #include <apt-private/private-update.h>
  70 #include <apt-private/private-upgrade.h>
  71 #include <apt-private/private-utils.h>
  72
  73 #include <errno.h>
  74 #include <signal.h>
  75 #include <stddef.h>
  76 #include <stdio.h>
  77 #include <stdlib.h>
  78 #include <string.h>
  79 #include <sys/ioctl.h>
  80 #include <sys/stat.h>
  81 #include <sys/wait.h>
  82 #include <unistd.h>
  83 #include <pwd.h>
  84 #include <grp.h>
  85
  86 #include <algorithm>
  87 #include <fstream>
  88 #include <iostream>
  89 #include <sstream>
  90 #include <set>
  91 #include <string>
  92 #include <vector>
  93
  94 #include <apti18n.h>
  95                                                                         /*}}}*/
  96
  97 using namespace std;
  98
  99 // TryToInstallBuildDep - Try to install a single package               /*{{{*/
 100 // ---------------------------------------------------------------------
 101 /* This used to be inlined in DoInstall, but with the advent of regex package
 102    name matching it was split out.. */
 103 static bool TryToInstallBuildDep(pkgCache::PkgIterator Pkg,pkgCacheFile &Cache,
 104                   pkgProblemResolver &Fix,bool Remove,bool BrokenFix,
 105                   bool AllowFail = true)
 106 {
 107    if (Cache[Pkg].CandidateVer == 0 && Pkg->ProvidesList != 0)
 108    {
 109       CacheSetHelperAPTGet helper(c1out);
 110       helper.showErrors(false);
 111       pkgCache::VerIterator Ver = helper.canNotFindNewestVer(Cache, Pkg);
 112       if (Ver.end() == false)
 113          Pkg = Ver.ParentPkg();
 114       else if (helper.showVirtualPackageErrors(Cache) == false)
 115          return AllowFail;
 116    }
 117
 118    if (_config->FindB("Debug::BuildDeps",false) == true)
 119    {
 120       if (Remove == true)
 121          cout << "  Trying to remove " << Pkg << endl;
 122       else
 123          cout << "  Trying to install " << Pkg << endl;
 124    }
 125
 126    if (Remove == true)
 127    {
 128       TryToRemove RemoveAction(Cache, &Fix);
 129       RemoveAction(Pkg.VersionList());
 130    } else if (Cache[Pkg].CandidateVer != 0) {
 131       TryToInstall InstallAction(Cache, &Fix, BrokenFix);
 132       InstallAction(Cache[Pkg].CandidateVerIter(Cache));
 133       InstallAction.doAutoInstall();
 134    } else
 135       return AllowFail;
 136
 137    return true;
 138 }
 139                                                                         /*}}}*/
 140 // GetReleaseFileForSourceRecord - Return Suite for the given srcrecord /*{{{*/
 141 static pkgCache::RlsFileIterator GetReleaseFileForSourceRecord(CacheFile &CacheFile,
 142       pkgSourceList *SrcList, pkgSrcRecords::Parser *Parse)
 143 {
 144    // try to find release
 145    const pkgIndexFile& CurrentIndexFile = Parse->Index();
 146
 147    for (pkgSourceList::const_iterator S = SrcList->begin();
 148         S != SrcList->end(); ++S)
 149    {
 150       vector<pkgIndexFile *> *Indexes = (*S)->GetIndexFiles();
 151       for (vector<pkgIndexFile *>::const_iterator IF = Indexes->begin();
 152            IF != Indexes->end(); ++IF)
 153       {
 154          if (&CurrentIndexFile == (*IF))
 155             return (*S)->FindInCache(CacheFile, false);
 156       }
 157    }
 158    return pkgCache::RlsFileIterator(CacheFile);
 159 }
 160                                                                         /*}}}*/
 161 // FindSrc - Find a source record                                       /*{{{*/
 162 // ---------------------------------------------------------------------
 163 /* */
 164 static pkgSrcRecords::Parser *FindSrc(const char *Name,
 165                                pkgSrcRecords &SrcRecs,string &Src,
 166                                CacheFile &CacheFile)
 167 {
 168    string VerTag, UserRequestedVerTag;
 169    string ArchTag = "";
 170    string RelTag = _config->Find("APT::Default-Release");
 171    string TmpSrc = Name;
 172    pkgDepCache *Cache = CacheFile.GetDepCache();
 173
 174    // extract release
 175    size_t found = TmpSrc.find_last_of("/");
 176    if (found != string::npos)
 177    {
 178       RelTag = TmpSrc.substr(found+1);
 179       TmpSrc = TmpSrc.substr(0,found);
 180    }
 181    // extract the version
 182    found = TmpSrc.find_last_of("=");
 183    if (found != string::npos)
 184    {
 185       VerTag = UserRequestedVerTag = TmpSrc.substr(found+1);
 186       TmpSrc = TmpSrc.substr(0,found);
 187    }
 188    // extract arch
 189    found = TmpSrc.find_last_of(":");
 190    if (found != string::npos)
 191    {
 192       ArchTag = TmpSrc.substr(found+1);
 193       TmpSrc = TmpSrc.substr(0,found);
 194    }
 195
 196    /* Lookup the version of the package we would install if we were to
 197       install a version and determine the source package name, then look
 198       in the archive for a source package of the same name. */
 199    bool MatchSrcOnly = _config->FindB("APT::Get::Only-Source");
 200    pkgCache::PkgIterator Pkg;
 201    if (ArchTag != "")
 202       Pkg = Cache->FindPkg(TmpSrc, ArchTag);
 203    else
 204       Pkg = Cache->FindPkg(TmpSrc);
 205
 206    // if we can't find a package but the user qualified with a arch,
 207    // error out here
 208    if (Pkg.end() && ArchTag != "")
 209    {
 210       Src = Name;
 211       _error->Error(_("Can not find a package for architecture '%s'"),
 212                     ArchTag.c_str());
 213       return 0;
 214    }
 215
 216    if (MatchSrcOnly == false && Pkg.end() == false)
 217    {
 218       if(VerTag != "" || RelTag != "" || ArchTag != "")
 219       {
 220          bool fuzzy = false;
 221          // we have a default release, try to locate the pkg. we do it like
 222          // this because GetCandidateVer() will not "downgrade", that means
 223          // "apt-get source -t stable apt" won't work on a unstable system
 224          for (pkgCache::VerIterator Ver = Pkg.VersionList();; ++Ver)
 225          {
 226             // try first only exact matches, later fuzzy matches
 227             if (Ver.end() == true)
 228             {
 229                if (fuzzy == true)
 230                   break;
 231                fuzzy = true;
 232                Ver = Pkg.VersionList();
 233                // exit right away from the Pkg.VersionList() loop if we
 234                // don't have any versions
 235                if (Ver.end() == true)
 236                   break;
 237             }
 238
 239             // ignore arches that are not for us
 240             if (ArchTag != "" && Ver.Arch() != ArchTag)
 241                continue;
 242
 243             // pick highest version for the arch unless the user wants
 244             // something else
 245             if (ArchTag != "" && VerTag == "" && RelTag == "")
 246                if(Cache->VS().CmpVersion(VerTag, Ver.VerStr()) < 0)
 247                   VerTag = Ver.VerStr();
 248
 249             // We match against a concrete version (or a part of this version)
 250             if (VerTag.empty() == false &&
 251                 (fuzzy == true || Cache->VS().CmpVersion(VerTag, Ver.VerStr()) != 0) && // exact match
 252                 (fuzzy == false || strncmp(VerTag.c_str(), Ver.VerStr(), VerTag.size()) != 0)) // fuzzy match
 253                continue;
 254
 255             for (pkgCache::VerFileIterator VF = Ver.FileList();
 256                  VF.end() == false; ++VF)
 257             {
 258                /* If this is the status file, and the current version is not the
 259                   version in the status file (ie it is not installed, or somesuch)
 260                   then it is not a candidate for installation, ever. This weeds
 261                   out bogus entries that may be due to config-file states, or
 262                   other. */
 263                if ((VF.File()->Flags & pkgCache::Flag::NotSource) ==
 264                    pkgCache::Flag::NotSource && Pkg.CurrentVer() != Ver)
 265                   continue;
 266
 267                // or we match against a release
 268                if(VerTag.empty() == false ||
 269                   (VF.File().Archive() != 0 && VF.File().Archive() == RelTag) ||
 270                   (VF.File().Codename() != 0 && VF.File().Codename() == RelTag))
 271                {
 272                   // the Version we have is possibly fuzzy or includes binUploads,
 273                   // so we use the Version of the SourcePkg (empty if same as package)
 274                   Src = Ver.SourcePkgName();
 275                   VerTag = Ver.SourceVerStr();
 276                   break;
 277                }
 278             }
 279             if (Src.empty() == false)
 280                break;
 281          }
 282       }
 283
 284       if (Src == "" && ArchTag != "")
 285       {
 286          if (VerTag != "")
 287             _error->Error(_("Can not find a package '%s' with version '%s'"),
 288                           Pkg.FullName().c_str(), VerTag.c_str());
 289          if (RelTag != "")
 290             _error->Error(_("Can not find a package '%s' with release '%s'"),
 291                           Pkg.FullName().c_str(), RelTag.c_str());
 292          Src = Name;
 293          return 0;
 294       }
 295
 296
 297       if (Src.empty() == true)
 298       {
 299          // if we don't have found a fitting package yet so we will
 300          // choose a good candidate and proceed with that.
 301          // Maybe we will find a source later on with the right VerTag
 302          // or RelTag
 303          pkgCache::VerIterator Ver = Cache->GetCandidateVer(Pkg);
 304          if (Ver.end() == false)
 305          {
 306             if (strcmp(Ver.SourcePkgName(),Ver.ParentPkg().Name()) != 0)
 307                Src = Ver.SourcePkgName();
 308             if (VerTag.empty() == true && strcmp(Ver.SourceVerStr(),Ver.VerStr()) != 0)
 309                VerTag = Ver.SourceVerStr();
 310          }
 311       }
 312    }
 313
 314    if (Src.empty() == true)
 315    {
 316       Src = TmpSrc;
 317    }
 318    else
 319    {
 320       /* if we have a source pkg name, make sure to only search
 321          for srcpkg names, otherwise apt gets confused if there
 322          is a binary package "pkg1" and a source package "pkg1"
 323          with the same name but that comes from different packages */
 324       MatchSrcOnly = true;
 325       if (Src != TmpSrc)
 326       {
 327          ioprintf(c1out, _("Picking '%s' as source package instead of '%s'\n"), Src.c_str(), TmpSrc.c_str());
 328       }
 329    }
 330
 331    // The best hit
 332    pkgSrcRecords::Parser *Last = 0;
 333    unsigned long Offset = 0;
 334    string Version;
 335    pkgSourceList *SrcList = CacheFile.GetSourceList();
 336
 337    /* Iterate over all of the hits, which includes the resulting
 338       binary packages in the search */
 339    pkgSrcRecords::Parser *Parse;
 340    while (true)
 341    {
 342       SrcRecs.Restart();
 343       while ((Parse = SrcRecs.Find(Src.c_str(), MatchSrcOnly)) != 0)
 344       {
 345          const string Ver = Parse->Version();
 346
 347          // See if we need to look for a specific release tag
 348          if (RelTag != "" && UserRequestedVerTag == "")
 349          {
 350             pkgCache::RlsFileIterator const Rls = GetReleaseFileForSourceRecord(CacheFile, SrcList, Parse);
 351             if (Rls.end() == false)
 352             {
 353                if ((Rls->Archive != 0 && RelTag == Rls.Archive()) ||
 354                      (Rls->Codename != 0 && RelTag == Rls.Codename()))
 355                {
 356                   Last = Parse;
 357                   Offset = Parse->Offset();
 358                   Version = Ver;
 359                }
 360             }
 361          }
 362
 363          // Ignore all versions which doesn't fit
 364          if (VerTag.empty() == false &&
 365              Cache->VS().CmpVersion(VerTag, Ver) != 0) // exact match
 366             continue;
 367
 368          // Newer version or an exact match? Save the hit
 369          if (Last == 0 || Cache->VS().CmpVersion(Version,Ver) < 0) {
 370             Last = Parse;
 371             Offset = Parse->Offset();
 372             Version = Ver;
 373          }
 374
 375          // was the version check above an exact match?
 376          // If so, we don't need to look further
 377          if (VerTag.empty() == false && (VerTag == Ver))
 378             break;
 379       }
 380       if (UserRequestedVerTag == "" && Version != "" && RelTag != "")
 381          ioprintf(c1out, "Selected version '%s' (%s) for %s\n",
 382                   Version.c_str(), RelTag.c_str(), Src.c_str());
 383
 384       if (Last != 0 || VerTag.empty() == true)
 385          break;
 386       _error->Error(_("Can not find version '%s' of package '%s'"), VerTag.c_str(), TmpSrc.c_str());
 387       return 0;
 388    }
 389
 390    if (Last == 0 || Last->Jump(Offset) == false)
 391       return 0;
 392
 393    return Last;
 394 }
 395                                                                         /*}}}*/
 396 /* mark packages as automatically/manually installed.                   {{{*/
 397 static bool DoMarkAuto(CommandLine &CmdL)
 398 {
 399    bool Action = true;
 400    int AutoMarkChanged = 0;
 401    OpTextProgress progress;
 402    CacheFile Cache;
 403    if (Cache.Open() == false)
 404       return false;
 405
 406    if (strcasecmp(CmdL.FileList[0],"markauto") == 0)
 407       Action = true;
 408    else if (strcasecmp(CmdL.FileList[0],"unmarkauto") == 0)
 409       Action = false;
 410
 411    for (const char **I = CmdL.FileList + 1; *I != 0; I++)
 412    {
 413       const char *S = *I;
 414       // Locate the package
 415       pkgCache::PkgIterator Pkg = Cache->FindPkg(S);
 416       if (Pkg.end() == true) {
 417          return _error->Error(_("Couldn't find package %s"),S);
 418       }
 419       else
 420       {
 421          if (!Action)
 422             ioprintf(c1out,_("%s set to manually installed.\n"), Pkg.Name());
 423          else
 424             ioprintf(c1out,_("%s set to automatically installed.\n"),
 425                       Pkg.Name());
 426
 427          Cache->MarkAuto(Pkg,Action);
 428          AutoMarkChanged++;
 429       }
 430    }
 431
 432    _error->Notice(_("This command is deprecated. Please use 'apt-mark auto' and 'apt-mark manual' instead."));
 433
 434    if (AutoMarkChanged && ! _config->FindB("APT::Get::Simulate",false))
 435       return Cache->writeStateFile(NULL);
 436    return false;
 437 }
 438                                                                         /*}}}*/
 439 // DoDSelectUpgrade - Do an upgrade by following dselects selections    /*{{{*/
 440 // ---------------------------------------------------------------------
 441 /* Follows dselect's selections */
 442 static bool DoDSelectUpgrade(CommandLine &)
 443 {
 444    CacheFile Cache;
 445    if (Cache.OpenForInstall() == false || Cache.CheckDeps() == false)
 446       return false;
 447
 448    pkgDepCache::ActionGroup group(Cache);
 449
 450    // Install everything with the install flag set
 451    pkgCache::PkgIterator I = Cache->PkgBegin();
 452    for (;I.end() != true; ++I)
 453    {
 454       /* Install the package only if it is a new install, the autoupgrader
 455          will deal with the rest */
 456       if (I->SelectedState == pkgCache::State::Install)
 457          Cache->MarkInstall(I,false);
 458    }
 459
 460    /* Now install their deps too, if we do this above then order of
 461       the status file is significant for | groups */
 462    for (I = Cache->PkgBegin();I.end() != true; ++I)
 463    {
 464       /* Install the package only if it is a new install, the autoupgrader
 465          will deal with the rest */
 466       if (I->SelectedState == pkgCache::State::Install)
 467          Cache->MarkInstall(I,true);
 468    }
 469
 470    // Apply erasures now, they override everything else.
 471    for (I = Cache->PkgBegin();I.end() != true; ++I)
 472    {
 473       // Remove packages
 474       if (I->SelectedState == pkgCache::State::DeInstall ||
 475           I->SelectedState == pkgCache::State::Purge)
 476          Cache->MarkDelete(I,I->SelectedState == pkgCache::State::Purge);
 477    }
 478
 479    /* Resolve any problems that dselect created, allupgrade cannot handle
 480       such things. We do so quite aggressively too.. */
 481    if (Cache->BrokenCount() != 0)
 482    {
 483       pkgProblemResolver Fix(Cache);
 484
 485       // Hold back held packages.
 486       if (_config->FindB("APT::Ignore-Hold",false) == false)
 487       {
 488          for (pkgCache::PkgIterator I = Cache->PkgBegin(); I.end() == false; ++I)
 489          {
 490             if (I->SelectedState == pkgCache::State::Hold)
 491             {
 492                Fix.Protect(I);
 493                Cache->MarkKeep(I);
 494             }
 495          }
 496       }
 497
 498       if (Fix.Resolve() == false)
 499       {
 500          ShowBroken(c1out,Cache,false);
 501          return _error->Error(_("Internal error, problem resolver broke stuff"));
 502       }
 503    }
 504
 505    // Now upgrade everything
 506    if (APT::Upgrade::Upgrade(Cache, APT::Upgrade::FORBID_REMOVE_PACKAGES | APT::Upgrade::FORBID_INSTALL_NEW_PACKAGES) == false)
 507    {
 508       ShowBroken(c1out,Cache,false);
 509       return _error->Error(_("Internal error, problem resolver broke stuff"));
 510    }
 511
 512    return InstallPackages(Cache,false);
 513 }
 514                                                                         /*}}}*/
 515 // DoClean - Remove download archives                                   /*{{{*/
 516 // ---------------------------------------------------------------------
 517 /* */
 518 static bool DoClean(CommandLine &)
 519 {
 520    std::string const archivedir = _config->FindDir("Dir::Cache::archives");
 521    std::string const listsdir = _config->FindDir("Dir::state::lists");
 522
 523    if (_config->FindB("APT::Get::Simulate") == true)
 524    {
 525       std::string const pkgcache = _config->FindFile("Dir::cache::pkgcache");
 526       std::string const srcpkgcache = _config->FindFile("Dir::cache::srcpkgcache");
 527       cout << "Del " << archivedir << "* " << archivedir << "partial/*"<< endl
 528            << "Del " << listsdir << "partial/*" << endl
 529            << "Del " << pkgcache << " " << srcpkgcache << endl;
 530       return true;
 531    }
 532
 533    pkgAcquire Fetcher;
 534    Fetcher.GetLock(archivedir);
 535    Fetcher.Clean(archivedir);
 536    Fetcher.Clean(archivedir + "partial/");
 537
 538    Fetcher.GetLock(listsdir);
 539    Fetcher.Clean(listsdir + "partial/");
 540
 541    pkgCacheFile::RemoveCaches();
 542
 543    return true;
 544 }
 545                                                                         /*}}}*/
 546 // DoAutoClean - Smartly remove downloaded archives                     /*{{{*/
 547 // ---------------------------------------------------------------------
 548 /* This is similar to clean but it only purges things that cannot be
 549    downloaded, that is old versions of cached packages. */
 550 class LogCleaner : public pkgArchiveCleaner
 551 {
 552    protected:
 553    virtual void Erase(const char *File,string Pkg,string Ver,struct stat &St) APT_OVERRIDE
 554    {
 555       c1out << "Del " << Pkg << " " << Ver << " [" << SizeToStr(St.st_size) << "B]" << endl;
 556
 557       if (_config->FindB("APT::Get::Simulate") == false)
 558          unlink(File);
 559    };
 560 };
 561
 562 static bool DoAutoClean(CommandLine &)
 563 {
 564    // Lock the archive directory
 565    FileFd Lock;
 566    if (_config->FindB("Debug::NoLocking",false) == false)
 567    {
 568       int lock_fd = GetLock(_config->FindDir("Dir::Cache::Archives") + "lock");
 569       if (lock_fd < 0)
 570          return _error->Error(_("Unable to lock the download directory"));
 571       Lock.Fd(lock_fd);
 572    }
 573
 574    CacheFile Cache;
 575    if (Cache.Open() == false)
 576       return false;
 577
 578    LogCleaner Cleaner;
 579
 580    return Cleaner.Go(_config->FindDir("Dir::Cache::archives"),*Cache) &&
 581       Cleaner.Go(_config->FindDir("Dir::Cache::archives") + "partial/",*Cache);
 582 }
 583                                                                         /*}}}*/
 584 // DoDownload - download a binary                                       /*{{{*/
 585 // ---------------------------------------------------------------------
 586 static bool DoDownload(CommandLine &CmdL)
 587 {
 588    CacheFile Cache;
 589    if (Cache.ReadOnlyOpen() == false)
 590       return false;
 591
 592    APT::CacheSetHelper helper;
 593    APT::VersionSet verset = APT::VersionSet::FromCommandLine(Cache,
 594                 CmdL.FileList + 1, APT::CacheSetHelper::CANDIDATE, helper);
 595
 596    if (verset.empty() == true)
 597       return false;
 598
 599    AcqTextStatus Stat(std::cout, ScreenWidth,_config->FindI("quiet",0));
 600    pkgAcquire Fetcher(&Stat);
 601
 602    pkgRecords Recs(Cache);
 603    pkgSourceList *SrcList = Cache.GetSourceList();
 604
 605    // reuse the usual acquire methods for deb files, but don't drop them into
 606    // the usual directories - keep everything in the current directory
 607    std::vector<std::string> storefile(verset.size());
 608    std::string const cwd = SafeGetCWD();
 609    _config->Set("Dir::Cache::Archives", cwd);
 610    int i = 0;
 611    for (APT::VersionSet::const_iterator Ver = verset.begin();
 612          Ver != verset.end(); ++Ver, ++i)
 613    {
 614       pkgAcquire::Item *I = new pkgAcqArchive(&Fetcher, SrcList, &Recs, *Ver, storefile[i]);
 615       if (storefile[i].empty())
 616          continue;
 617       std::string const filename = cwd + flNotDir(storefile[i]);
 618       storefile[i].assign(filename);
 619       I->DestFile.assign(filename);
 620    }
 621
 622    // Just print out the uris and exit if the --print-uris flag was used
 623    if (_config->FindB("APT::Get::Print-URIs") == true)
 624    {
 625       pkgAcquire::UriIterator I = Fetcher.UriBegin();
 626       for (; I != Fetcher.UriEnd(); ++I)
 627          cout << '\'' << I->URI << "' " << flNotDir(I->Owner->DestFile)  << ' ' <<
 628                I->Owner->FileSize << ' ' << I->Owner->HashSum() << endl;
 629       return true;
 630    }
 631
 632    // Disable drop-privs if "_apt" can not write to the target dir
 633    CheckDropPrivsMustBeDisabled(Fetcher);
 634
 635    if (_error->PendingError() == true || CheckAuth(Fetcher, false) == false)
 636       return false;
 637
 638    bool Failed = false;
 639    if (AcquireRun(Fetcher, 0, &Failed, NULL) == false)
 640       return false;
 641
 642    // copy files in local sources to the current directory
 643    for (pkgAcquire::ItemIterator I = Fetcher.ItemsBegin(); I != Fetcher.ItemsEnd(); ++I)
 644    {
 645       std::string const filename = cwd + flNotDir((*I)->DestFile);
 646       if ((*I)->Local == true &&
 647           filename != (*I)->DestFile &&
 648           (*I)->Status == pkgAcquire::Item::StatDone)
 649       {
 650          std::ifstream src((*I)->DestFile.c_str(), std::ios::binary);
 651          std::ofstream dst(filename.c_str(), std::ios::binary);
 652          dst << src.rdbuf();
 653       }
 654    }
 655    return Failed == false;
 656 }
 657                                                                         /*}}}*/
 658 // DoCheck - Perform the check operation                                /*{{{*/
 659 // ---------------------------------------------------------------------
 660 /* Opening automatically checks the system, this command is mostly used
 661    for debugging */
 662 static bool DoCheck(CommandLine &)
 663 {
 664    CacheFile Cache;
 665    Cache.Open();
 666    Cache.CheckDeps();
 667
 668    return true;
 669 }
 670                                                                         /*}}}*/
 671 // DoSource - Fetch a source archive                                    /*{{{*/
 672 // ---------------------------------------------------------------------
 673 /* Fetch souce packages */
 674 struct DscFile
 675 {
 676    string Package;
 677    string Version;
 678    string Dsc;
 679 };
 680
 681 static bool DoSource(CommandLine &CmdL)
 682 {
 683    CacheFile Cache;
 684    if (Cache.Open(false) == false)
 685       return false;
 686
 687    if (CmdL.FileSize() <= 1)
 688       return _error->Error(_("Must specify at least one package to fetch source for"));
 689
 690    // Read the source list
 691    if (Cache.BuildSourceList() == false)
 692       return false;
 693    pkgSourceList *List = Cache.GetSourceList();
 694
 695    // Create the text record parsers
 696    pkgSrcRecords SrcRecs(*List);
 697    if (_error->PendingError() == true)
 698       return false;
 699
 700    // Create the download object
 701    AcqTextStatus Stat(std::cout, ScreenWidth,_config->FindI("quiet",0));
 702    pkgAcquire Fetcher(&Stat);
 703
 704    std::unique_ptr<DscFile[]> Dsc(new DscFile[CmdL.FileSize()]);
 705
 706    // insert all downloaded uris into this set to avoid downloading them
 707    // twice
 708    set<string> queued;
 709
 710    // Diff only mode only fetches .diff files
 711    bool const diffOnly = _config->FindB("APT::Get::Diff-Only", false);
 712    // Tar only mode only fetches .tar files
 713    bool const tarOnly = _config->FindB("APT::Get::Tar-Only", false);
 714    // Dsc only mode only fetches .dsc files
 715    bool const dscOnly = _config->FindB("APT::Get::Dsc-Only", false);
 716
 717    // Load the requestd sources into the fetcher
 718    unsigned J = 0;
 719    std::vector<std::string> UntrustedList;
 720    for (const char **I = CmdL.FileList + 1; *I != 0; I++, J++)
 721    {
 722       string Src;
 723       pkgSrcRecords::Parser *Last = FindSrc(*I,SrcRecs,Src,Cache);
 724       if (Last == 0) {
 725          return _error->Error(_("Unable to find a source package for %s"),Src.c_str());
 726       }
 727
 728       if (Last->Index().IsTrusted() == false)
 729          UntrustedList.push_back(Src);
 730
 731       string srec = Last->AsStr();
 732       string::size_type pos = srec.find("\nVcs-");
 733       while (pos != string::npos)
 734       {
 735          pos += strlen("\nVcs-");
 736          string vcs = srec.substr(pos,srec.find(":",pos)-pos);
 737          if(vcs == "Browser")
 738          {
 739             pos = srec.find("\nVcs-", pos);
 740             continue;
 741          }
 742          pos += vcs.length()+2;
 743          string::size_type epos = srec.find("\n", pos);
 744          string uri = srec.substr(pos,epos-pos).c_str();
 745          ioprintf(c1out, _("NOTICE: '%s' packaging is maintained in "
 746                            "the '%s' version control system at:\n"
 747                            "%s\n"),
 748                   Src.c_str(), vcs.c_str(), uri.c_str());
 749          if(vcs == "Bzr")
 750             ioprintf(c1out,_("Please use:\n"
 751                              "bzr branch %s\n"
 752                              "to retrieve the latest (possibly unreleased) "
 753                              "updates to the package.\n"),
 754                      uri.c_str());
 755          break;
 756       }
 757
 758       // Back track
 759       vector<pkgSrcRecords::File2> Lst;
 760       if (Last->Files2(Lst) == false) {
 761          return false;
 762       }
 763
 764       // Load them into the fetcher
 765       for (vector<pkgSrcRecords::File2>::const_iterator I = Lst.begin();
 766            I != Lst.end(); ++I)
 767       {
 768          // Try to guess what sort of file it is we are getting.
 769          if (I->Type == "dsc")
 770          {
 771             Dsc[J].Package = Last->Package();
 772             Dsc[J].Version = Last->Version();
 773             Dsc[J].Dsc = flNotDir(I->Path);
 774          }
 775
 776          // Handle the only options so that multiple can be used at once
 777          if (diffOnly == true || tarOnly == true || dscOnly == true)
 778          {
 779             if ((diffOnly == true && I->Type == "diff") ||
 780                 (tarOnly == true && I->Type == "tar") ||
 781                 (dscOnly == true && I->Type == "dsc"))
 782                 ; // Fine, we want this file downloaded
 783             else
 784                continue;
 785          }
 786
 787          // don't download the same uri twice (should this be moved to
 788          // the fetcher interface itself?)
 789          if(queued.find(Last->Index().ArchiveURI(I->Path)) != queued.end())
 790             continue;
 791          queued.insert(Last->Index().ArchiveURI(I->Path));
 792
 793          // check if we have a file with that md5 sum already localy
 794          std::string localFile = flNotDir(I->Path);
 795          if (FileExists(localFile) == true)
 796             if(I->Hashes.VerifyFile(localFile) == true)
 797             {
 798                ioprintf(c1out,_("Skipping already downloaded file '%s'\n"),
 799                         localFile.c_str());
 800                continue;
 801             }
 802
 803          // see if we have a hash (Acquire::ForceHash is the only way to have none)
 804          if (I->Hashes.usable() == false && _config->FindB("APT::Get::AllowUnauthenticated",false) == false)
 805          {
 806             ioprintf(c1out, "Skipping download of file '%s' as requested hashsum is not available for authentication\n",
 807                      localFile.c_str());
 808             continue;
 809          }
 810
 811          new pkgAcqFile(&Fetcher,Last->Index().ArchiveURI(I->Path),
 812                         I->Hashes, I->FileSize, Last->Index().SourceInfo(*Last,*I), Src);
 813       }
 814    }
 815
 816    // Display statistics
 817    unsigned long long FetchBytes = Fetcher.FetchNeeded();
 818    unsigned long long FetchPBytes = Fetcher.PartialPresent();
 819    unsigned long long DebBytes = Fetcher.TotalNeeded();
 820
 821    if (CheckFreeSpaceBeforeDownload(".", (FetchBytes - FetchPBytes)) == false)
 822       return false;
 823
 824    // Number of bytes
 825    if (DebBytes != FetchBytes)
 826       //TRANSLATOR: The required space between number and unit is already included
 827       // in the replacement strings, so %sB will be correctly translate in e.g. 1,5 MB
 828       ioprintf(c1out,_("Need to get %sB/%sB of source archives.\n"),
 829                SizeToStr(FetchBytes).c_str(),SizeToStr(DebBytes).c_str());
 830    else
 831       //TRANSLATOR: The required space between number and unit is already included
 832       // in the replacement string, so %sB will be correctly translate in e.g. 1,5 MB
 833       ioprintf(c1out,_("Need to get %sB of source archives.\n"),
 834                SizeToStr(DebBytes).c_str());
 835
 836    if (_config->FindB("APT::Get::Simulate",false) == true)
 837    {
 838       for (unsigned I = 0; I != J; I++)
 839          ioprintf(cout,_("Fetch source %s\n"),Dsc[I].Package.c_str());
 840       return true;
 841    }
 842
 843    // Just print out the uris an exit if the --print-uris flag was used
 844    if (_config->FindB("APT::Get::Print-URIs") == true)
 845    {
 846       pkgAcquire::UriIterator I = Fetcher.UriBegin();
 847       for (; I != Fetcher.UriEnd(); ++I)
 848          cout << '\'' << I->URI << "' " << flNotDir(I->Owner->DestFile) << ' ' <<
 849                I->Owner->FileSize << ' ' << I->Owner->HashSum() << endl;
 850       return true;
 851    }
 852
 853    // Disable drop-privs if "_apt" can not write to the target dir
 854    CheckDropPrivsMustBeDisabled(Fetcher);
 855
 856    // check authentication status of the source as well
 857    if (UntrustedList.empty() == false && AuthPrompt(UntrustedList, false) == false)
 858       return false;
 859
 860    // Run it
 861    bool Failed = false;
 862    if (AcquireRun(Fetcher, 0, &Failed, NULL) == false || Failed == true)
 863    {
 864       return _error->Error(_("Failed to fetch some archives."));
 865    }
 866
 867    if (_config->FindB("APT::Get::Download-only",false) == true)
 868    {
 869       c1out << _("Download complete and in download only mode") << endl;
 870       return true;
 871    }
 872
 873    // Unpack the sources
 874    pid_t Process = ExecFork();
 875
 876    if (Process == 0)
 877    {
 878       bool const fixBroken = _config->FindB("APT::Get::Fix-Broken", false);
 879       for (unsigned I = 0; I != J; ++I)
 880       {
 881          string Dir = Dsc[I].Package + '-' + Cache->VS().UpstreamVersion(Dsc[I].Version.c_str());
 882
 883          // Diff only mode only fetches .diff files
 884          if (_config->FindB("APT::Get::Diff-Only",false) == true ||
 885              _config->FindB("APT::Get::Tar-Only",false) == true ||
 886              Dsc[I].Dsc.empty() == true)
 887             continue;
 888
 889          // See if the package is already unpacked
 890          struct stat Stat;
 891          if (fixBroken == false && stat(Dir.c_str(),&Stat) == 0 &&
 892              S_ISDIR(Stat.st_mode) != 0)
 893          {
 894             ioprintf(c0out ,_("Skipping unpack of already unpacked source in %s\n"),
 895                               Dir.c_str());
 896          }
 897          else
 898          {
 899             // Call dpkg-source
 900             std::string const sourceopts = _config->Find("DPkg::Source-Options", "-x");
 901             std::string S;
 902             strprintf(S, "%s %s %s",
 903                      _config->Find("Dir::Bin::dpkg-source","dpkg-source").c_str(),
 904                      sourceopts.c_str(), Dsc[I].Dsc.c_str());
 905             if (system(S.c_str()) != 0)
 906             {
 907                fprintf(stderr, _("Unpack command '%s' failed.\n"), S.c_str());
 908                fprintf(stderr, _("Check if the 'dpkg-dev' package is installed.\n"));
 909                _exit(1);
 910             }
 911          }
 912
 913          // Try to compile it with dpkg-buildpackage
 914          if (_config->FindB("APT::Get::Compile",false) == true)
 915          {
 916             string buildopts = _config->Find("APT::Get::Host-Architecture");
 917             if (buildopts.empty() == false)
 918                buildopts = "-a" + buildopts + " ";
 919
 920             // get all active build profiles
 921             std::string const profiles = APT::Configuration::getBuildProfilesString();
 922             if (profiles.empty() == false)
 923                buildopts.append(" -P").append(profiles).append(" ");
 924
 925             buildopts.append(_config->Find("DPkg::Build-Options","-b -uc"));
 926
 927             // Call dpkg-buildpackage
 928             std::string S;
 929             strprintf(S, "cd %s && %s %s",
 930                      Dir.c_str(),
 931                      _config->Find("Dir::Bin::dpkg-buildpackage","dpkg-buildpackage").c_str(),
 932                      buildopts.c_str());
 933
 934             if (system(S.c_str()) != 0)
 935             {
 936                fprintf(stderr, _("Build command '%s' failed.\n"), S.c_str());
 937                _exit(1);
 938             }
 939          }
 940       }
 941
 942       _exit(0);
 943    }
 944
 945    // Wait for the subprocess
 946    int Status = 0;
 947    while (waitpid(Process,&Status,0) != Process)
 948    {
 949       if (errno == EINTR)
 950          continue;
 951       return _error->Errno("waitpid","Couldn't wait for subprocess");
 952    }
 953
 954    if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0)
 955       return _error->Error(_("Child process failed"));
 956
 957    return true;
 958 }
 959                                                                         /*}}}*/
 960 // DoBuildDep - Install/removes packages to satisfy build dependencies  /*{{{*/
 961 // ---------------------------------------------------------------------
 962 /* This function will look at the build depends list of the given source
 963    package and install the necessary packages to make it true, or fail. */
 964 static bool DoBuildDep(CommandLine &CmdL)
 965 {
 966    CacheFile Cache;
 967
 968    _config->Set("APT::Install-Recommends", false);
 969
 970    if (Cache.Open(true) == false)
 971       return false;
 972
 973    if (CmdL.FileSize() <= 1)
 974       return _error->Error(_("Must specify at least one package to check builddeps for"));
 975
 976    // Read the source list
 977    if (Cache.BuildSourceList() == false)
 978       return false;
 979    pkgSourceList *List = Cache.GetSourceList();
 980
 981    // Create the text record parsers
 982    pkgSrcRecords SrcRecs(*List);
 983    if (_error->PendingError() == true)
 984       return false;
 985
 986    bool StripMultiArch;
 987    string hostArch = _config->Find("APT::Get::Host-Architecture");
 988    if (hostArch.empty() == false)
 989    {
 990       std::vector<std::string> archs = APT::Configuration::getArchitectures();
 991       if (std::find(archs.begin(), archs.end(), hostArch) == archs.end())
 992          return _error->Error(_("No architecture information available for %s. See apt.conf(5) APT::Architectures for setup"), hostArch.c_str());
 993       StripMultiArch = false;
 994    }
 995    else
 996       StripMultiArch = true;
 997
 998    unsigned J = 0;
 999    for (const char **I = CmdL.FileList + 1; *I != 0; I++, J++)
1000    {
1001       string Src;
1002       pkgSrcRecords::Parser *Last = 0;
1003       std::unique_ptr<pkgSrcRecords::Parser> LastOwner;
1004
1005       // an unpacked debian source tree
1006       using APT::String::Startswith;
1007       if ((Startswith(*I, "./") || Startswith(*I, "/")) &&
1008           DirectoryExists(*I))
1009       {
1010          ioprintf(c1out, _("Note, using directory '%s' to get the build dependencies\n"), *I);
1011          // FIXME: how can we make this more elegant?
1012          std::string TypeName = "Debian control file";
1013          pkgIndexFile::Type *Type = pkgIndexFile::Type::GetType(TypeName.c_str());
1014          if(Type != NULL)
1015             LastOwner.reset(Last = Type->CreateSrcPkgParser(*I));
1016       }
1017       // if its a local file (e.g. .dsc) use this
1018       else if (FileExists(*I))
1019       {
1020          ioprintf(c1out, _("Note, using file '%s' to get the build dependencies\n"), *I);
1021
1022          // see if we can get a parser for this pkgIndexFile type
1023          string TypeName = "Debian " + flExtension(*I) + " file";
1024          pkgIndexFile::Type *Type = pkgIndexFile::Type::GetType(TypeName.c_str());
1025          if(Type != NULL)
1026             LastOwner.reset(Last = Type->CreateSrcPkgParser(*I));
1027       } else {
1028          // normal case, search the cache for the source file
1029          Last = FindSrc(*I,SrcRecs,Src,Cache);
1030       }
1031
1032       if (Last == 0)
1033          return _error->Error(_("Unable to find a source package for %s"),Src.c_str());
1034
1035       // Process the build-dependencies
1036       vector<pkgSrcRecords::Parser::BuildDepRec> BuildDeps;
1037       // FIXME: Can't specify architecture to use for [wildcard] matching, so switch default arch temporary
1038       if (hostArch.empty() == false)
1039       {
1040          std::string nativeArch = _config->Find("APT::Architecture");
1041          _config->Set("APT::Architecture", hostArch);
1042          bool Success = Last->BuildDepends(BuildDeps, _config->FindB("APT::Get::Arch-Only", false), StripMultiArch);
1043          _config->Set("APT::Architecture", nativeArch);
1044          if (Success == false)
1045             return _error->Error(_("Unable to get build-dependency information for %s"),Src.c_str());
1046       }
1047       else if (Last->BuildDepends(BuildDeps, _config->FindB("APT::Get::Arch-Only", false), StripMultiArch) == false)
1048             return _error->Error(_("Unable to get build-dependency information for %s"),Src.c_str());
1049
1050       // Also ensure that build-essential packages are present
1051       Configuration::Item const *Opts = _config->Tree("APT::Build-Essential");
1052       if (Opts)
1053          Opts = Opts->Child;
1054       for (; Opts; Opts = Opts->Next)
1055       {
1056          if (Opts->Value.empty() == true)
1057             continue;
1058
1059          pkgSrcRecords::Parser::BuildDepRec rec;
1060          rec.Package = Opts->Value;
1061          rec.Type = pkgSrcRecords::Parser::BuildDependIndep;
1062          rec.Op = 0;
1063          BuildDeps.push_back(rec);
1064       }
1065
1066       if (BuildDeps.empty() == true)
1067       {
1068          ioprintf(c1out,_("%s has no build depends.\n"),Src.c_str());
1069          continue;
1070       }
1071
1072       // Install the requested packages
1073       vector <pkgSrcRecords::Parser::BuildDepRec>::iterator D;
1074       pkgProblemResolver Fix(Cache);
1075       bool skipAlternatives = false; // skip remaining alternatives in an or group
1076       for (D = BuildDeps.begin(); D != BuildDeps.end(); ++D)
1077       {
1078          bool hasAlternatives = (((*D).Op & pkgCache::Dep::Or) == pkgCache::Dep::Or);
1079
1080          if (skipAlternatives == true)
1081          {
1082             /*
1083              * if there are alternatives, we've already picked one, so skip
1084              * the rest
1085              *
1086              * TODO: this means that if there's a build-dep on A|B and B is
1087              * installed, we'll still try to install A; more importantly,
1088              * if A is currently broken, we cannot go back and try B. To fix
1089              * this would require we do a Resolve cycle for each package we
1090              * add to the install list. Ugh
1091              */
1092             if (!hasAlternatives)
1093                skipAlternatives = false; // end of or group
1094             continue;
1095          }
1096
1097          if ((*D).Type == pkgSrcRecords::Parser::BuildConflict ||
1098              (*D).Type == pkgSrcRecords::Parser::BuildConflictIndep)
1099          {
1100             pkgCache::GrpIterator Grp = Cache->FindGrp((*D).Package);
1101             // Build-conflicts on unknown packages are silently ignored
1102             if (Grp.end() == true)
1103                continue;
1104
1105             for (pkgCache::PkgIterator Pkg = Grp.PackageList(); Pkg.end() == false; Pkg = Grp.NextPkg(Pkg))
1106             {
1107                pkgCache::VerIterator IV = (*Cache)[Pkg].InstVerIter(*Cache);
1108                /*
1109                 * Remove if we have an installed version that satisfies the
1110                 * version criteria
1111                 */
1112                if (IV.end() == false &&
1113                    Cache->VS().CheckDep(IV.VerStr(),(*D).Op,(*D).Version.c_str()) == true)
1114                   TryToInstallBuildDep(Pkg,Cache,Fix,true,false);
1115             }
1116          }
1117          else // BuildDep || BuildDepIndep
1118          {
1119             if (_config->FindB("Debug::BuildDeps",false) == true)
1120                  cout << "Looking for " << (*D).Package << "...\n";
1121
1122             pkgCache::PkgIterator Pkg;
1123
1124             // Cross-Building?
1125             if (StripMultiArch == false && D->Type != pkgSrcRecords::Parser::BuildDependIndep)
1126             {
1127                size_t const colon = D->Package.find(":");
1128                if (colon != string::npos)
1129                {
1130                   if (strcmp(D->Package.c_str() + colon, ":any") == 0 || strcmp(D->Package.c_str() + colon, ":native") == 0)
1131                      Pkg = Cache->FindPkg(D->Package.substr(0,colon));
1132                   else
1133                      Pkg = Cache->FindPkg(D->Package);
1134                }
1135                else
1136                   Pkg = Cache->FindPkg(D->Package, hostArch);
1137
1138                // a bad version either is invalid or doesn't satify dependency
1139                #define BADVER(Ver) (Ver.end() == true || \
1140                                     (D->Version.empty() == false && \
1141                                      Cache->VS().CheckDep(Ver.VerStr(),D->Op,D->Version.c_str()) == false))
1142
1143                APT::VersionList verlist;
1144                if (Pkg.end() == false)
1145                {
1146                   pkgCache::VerIterator Ver = (*Cache)[Pkg].InstVerIter(*Cache);
1147                   if (BADVER(Ver) == false)
1148                      verlist.insert(Ver);
1149                   Ver = (*Cache)[Pkg].CandidateVerIter(*Cache);
1150                   if (BADVER(Ver) == false)
1151                      verlist.insert(Ver);
1152                }
1153                if (verlist.empty() == true)
1154                {
1155                   pkgCache::PkgIterator BuildPkg = Cache->FindPkg(D->Package, "native");
1156                   if (BuildPkg.end() == false && Pkg != BuildPkg)
1157                   {
1158                      pkgCache::VerIterator Ver = (*Cache)[BuildPkg].InstVerIter(*Cache);
1159                      if (BADVER(Ver) == false)
1160                         verlist.insert(Ver);
1161                      Ver = (*Cache)[BuildPkg].CandidateVerIter(*Cache);
1162                      if (BADVER(Ver) == false)
1163                         verlist.insert(Ver);
1164                   }
1165                }
1166                #undef BADVER
1167
1168                string forbidden;
1169                // We need to decide if host or build arch, so find a version we can look at
1170                APT::VersionList::const_iterator Ver = verlist.begin();
1171                for (; Ver != verlist.end(); ++Ver)
1172                {
1173                   forbidden.clear();
1174                   if (Ver->MultiArch == pkgCache::Version::No || Ver->MultiArch == pkgCache::Version::All)
1175                   {
1176                      if (colon == string::npos)
1177                         Pkg = Ver.ParentPkg().Group().FindPkg(hostArch);
1178                      else if (strcmp(D->Package.c_str() + colon, ":any") == 0)
1179                         forbidden = "Multi-Arch: no";
1180                      else if (strcmp(D->Package.c_str() + colon, ":native") == 0)
1181                         Pkg = Ver.ParentPkg().Group().FindPkg("native");
1182                   }
1183                   else if (Ver->MultiArch == pkgCache::Version::Same)
1184                   {
1185                      if (colon == string::npos)
1186                         Pkg = Ver.ParentPkg().Group().FindPkg(hostArch);
1187                      else if (strcmp(D->Package.c_str() + colon, ":any") == 0)
1188                         forbidden = "Multi-Arch: same";
1189                      else if (strcmp(D->Package.c_str() + colon, ":native") == 0)
1190                         Pkg = Ver.ParentPkg().Group().FindPkg("native");
1191                   }
1192                   else if ((Ver->MultiArch & pkgCache::Version::Foreign) == pkgCache::Version::Foreign)
1193                   {
1194                      if (colon == string::npos)
1195                         Pkg = Ver.ParentPkg().Group().FindPkg("native");
1196                      else if (strcmp(D->Package.c_str() + colon, ":any") == 0 ||
1197                               strcmp(D->Package.c_str() + colon, ":native") == 0)
1198                         forbidden = "Multi-Arch: foreign";
1199                   }
1200                   else if ((Ver->MultiArch & pkgCache::Version::Allowed) == pkgCache::Version::Allowed)
1201                   {
1202                      if (colon == string::npos)
1203                         Pkg = Ver.ParentPkg().Group().FindPkg(hostArch);
1204                      else if (strcmp(D->Package.c_str() + colon, ":any") == 0)
1205                      {
1206                         // prefer any installed over preferred non-installed architectures
1207                         pkgCache::GrpIterator Grp = Ver.ParentPkg().Group();
1208                         // we don't check for version here as we are better of with upgrading than remove and install
1209                         for (Pkg = Grp.PackageList(); Pkg.end() == false; Pkg = Grp.NextPkg(Pkg))
1210                            if (Pkg.CurrentVer().end() == false)
1211                               break;
1212                         if (Pkg.end() == true)
1213                            Pkg = Grp.FindPreferredPkg(true);
1214                      }
1215                      else if (strcmp(D->Package.c_str() + colon, ":native") == 0)
1216                         Pkg = Ver.ParentPkg().Group().FindPkg("native");
1217                   }
1218
1219                   if (forbidden.empty() == false)
1220                   {
1221                      if (_config->FindB("Debug::BuildDeps",false) == true)
1222                         cout << D->Package.substr(colon, string::npos) << " is not allowed from " << forbidden << " package " << (*D).Package << " (" << Ver.VerStr() << ")" << endl;
1223                      continue;
1224                   }
1225
1226                   //we found a good version
1227                   break;
1228                }
1229                if (Ver == verlist.end())
1230                {
1231                   if (_config->FindB("Debug::BuildDeps",false) == true)
1232                      cout << " No multiarch info as we have no satisfying installed nor candidate for " << D->Package << " on build or host arch" << endl;
1233
1234                   if (forbidden.empty() == false)
1235                   {
1236                      if (hasAlternatives)
1237                         continue;
1238                      return _error->Error(_("%s dependency for %s can't be satisfied "
1239                                             "because %s is not allowed on '%s' packages"),
1240                                           Last->BuildDepType(D->Type), Src.c_str(),
1241                                           D->Package.c_str(), forbidden.c_str());
1242                   }
1243                }
1244             }
1245             else
1246                Pkg = Cache->FindPkg(D->Package);
1247
1248             if (Pkg.end() == true || (Pkg->VersionList == 0 && Pkg->ProvidesList == 0))
1249             {
1250                if (_config->FindB("Debug::BuildDeps",false) == true)
1251                     cout << " (not found)" << (*D).Package << endl;
1252
1253                if (hasAlternatives)
1254                   continue;
1255
1256                return _error->Error(_("%s dependency for %s cannot be satisfied "
1257                                       "because the package %s cannot be found"),
1258                                     Last->BuildDepType((*D).Type),Src.c_str(),
1259                                     (*D).Package.c_str());
1260             }
1261
1262             pkgCache::VerIterator IV = (*Cache)[Pkg].InstVerIter(*Cache);
1263             if (IV.end() == false)
1264             {
1265                if (_config->FindB("Debug::BuildDeps",false) == true)
1266                   cout << "  Is installed\n";
1267
1268                if (D->Version.empty() == true ||
1269                    Cache->VS().CheckDep(IV.VerStr(),(*D).Op,(*D).Version.c_str()) == true)
1270                {
1271                   skipAlternatives = hasAlternatives;
1272                   continue;
1273                }
1274
1275                if (_config->FindB("Debug::BuildDeps",false) == true)
1276                   cout << "    ...but the installed version doesn't meet the version requirement\n";
1277
1278                if (((*D).Op & pkgCache::Dep::LessEq) == pkgCache::Dep::LessEq)
1279                   return _error->Error(_("Failed to satisfy %s dependency for %s: Installed package %s is too new"),
1280                                         Last->BuildDepType((*D).Type), Src.c_str(), Pkg.FullName(true).c_str());
1281             }
1282
1283             // Only consider virtual packages if there is no versioned dependency
1284             if ((*D).Version.empty() == true)
1285             {
1286                /*
1287                 * If this is a virtual package, we need to check the list of
1288                 * packages that provide it and see if any of those are
1289                 * installed
1290                 */
1291                pkgCache::PrvIterator Prv = Pkg.ProvidesList();
1292                for (; Prv.end() != true; ++Prv)
1293                {
1294                   if (_config->FindB("Debug::BuildDeps",false) == true)
1295                      cout << "  Checking provider " << Prv.OwnerPkg().FullName() << endl;
1296
1297                   if ((*Cache)[Prv.OwnerPkg()].InstVerIter(*Cache).end() == false)
1298                      break;
1299                }
1300
1301                if (Prv.end() == false)
1302                {
1303                   if (_config->FindB("Debug::BuildDeps",false) == true)
1304                      cout << "  Is provided by installed package " << Prv.OwnerPkg().FullName() << endl;
1305                   skipAlternatives = hasAlternatives;
1306                   continue;
1307                }
1308             }
1309             else // versioned dependency
1310             {
1311                pkgCache::VerIterator CV = (*Cache)[Pkg].CandidateVerIter(*Cache);
1312                if (CV.end() == true ||
1313                    Cache->VS().CheckDep(CV.VerStr(),(*D).Op,(*D).Version.c_str()) == false)
1314                {
1315                   if (hasAlternatives)
1316                      continue;
1317                   else if (CV.end() == false)
1318                      return _error->Error(_("%s dependency for %s cannot be satisfied "
1319                                             "because candidate version of package %s "
1320                                             "can't satisfy version requirements"),
1321                                           Last->BuildDepType(D->Type), Src.c_str(),
1322                                           D->Package.c_str());
1323                   else
1324                      return _error->Error(_("%s dependency for %s cannot be satisfied "
1325                                             "because package %s has no candidate version"),
1326                                           Last->BuildDepType(D->Type), Src.c_str(),
1327                                           D->Package.c_str());
1328                }
1329             }
1330
1331             if (TryToInstallBuildDep(Pkg,Cache,Fix,false,false,false) == true)
1332             {
1333                // We successfully installed something; skip remaining alternatives
1334                skipAlternatives = hasAlternatives;
1335                if(_config->FindB("APT::Get::Build-Dep-Automatic", false) == true)
1336                   Cache->MarkAuto(Pkg, true);
1337                continue;
1338             }
1339             else if (hasAlternatives)
1340             {
1341                if (_config->FindB("Debug::BuildDeps",false) == true)
1342                   cout << "  Unsatisfiable, trying alternatives\n";
1343                continue;
1344             }
1345             else
1346             {
1347                return _error->Error(_("Failed to satisfy %s dependency for %s: %s"),
1348                                     Last->BuildDepType((*D).Type),
1349                                     Src.c_str(),
1350                                     (*D).Package.c_str());
1351             }
1352          }
1353       }
1354
1355       if (Fix.Resolve(true) == false)
1356          _error->Discard();
1357
1358       // Now we check the state of the packages,
1359       if (Cache->BrokenCount() != 0)
1360       {
1361          ShowBroken(cout, Cache, false);
1362          return _error->Error(_("Build-dependencies for %s could not be satisfied."),*I);
1363       }
1364    }
1365
1366    if (InstallPackages(Cache, false, true) == false)
1367       return _error->Error(_("Failed to process build dependencies"));
1368    return true;
1369 }
1370                                                                         /*}}}*/
1371 // DoChangelog - Get changelog from the command line                    /*{{{*/
1372 static bool DoChangelog(CommandLine &CmdL)
1373 {
1374    CacheFile Cache;
1375    if (Cache.ReadOnlyOpen() == false)
1376       return false;
1377
1378    APT::CacheSetHelper helper;
1379    APT::VersionList verset = APT::VersionList::FromCommandLine(Cache,
1380                 CmdL.FileList + 1, APT::CacheSetHelper::CANDIDATE, helper);
1381    if (verset.empty() == true)
1382       return false;
1383    pkgAcquire Fetcher;
1384    AcqTextStatus Stat(std::cout, ScreenWidth,_config->FindI("quiet",0));
1385    Fetcher.SetLog(&Stat);
1386
1387    bool const downOnly = _config->FindB("APT::Get::Download-Only", false);
1388    bool const printOnly = _config->FindB("APT::Get::Print-URIs", false);
1389
1390    for (APT::VersionList::const_iterator Ver = verset.begin();
1391         Ver != verset.end();
1392         ++Ver)
1393    {
1394       if (printOnly)
1395          new pkgAcqChangelog(&Fetcher, Ver, "/dev/null");
1396       else if (downOnly)
1397          new pkgAcqChangelog(&Fetcher, Ver, ".");
1398       else
1399          new pkgAcqChangelog(&Fetcher, Ver);
1400    }
1401
1402    if (printOnly == false)
1403    {
1404       // Disable drop-privs if "_apt" can not write to the target dir
1405       CheckDropPrivsMustBeDisabled(Fetcher);
1406       if (_error->PendingError() == true)
1407          return false;
1408
1409       bool Failed = false;
1410       if (AcquireRun(Fetcher, 0, &Failed, NULL) == false || Failed == true)
1411          return false;
1412    }
1413
1414    if (downOnly == false || printOnly == true)
1415    {
1416       bool Failed = false;
1417       for (pkgAcquire::ItemIterator I = Fetcher.ItemsBegin(); I != Fetcher.ItemsEnd(); ++I)
1418       {
1419          if (printOnly)
1420          {
1421             if ((*I)->ErrorText.empty() == false)
1422             {
1423                Failed = true;
1424                _error->Error("%s", (*I)->ErrorText.c_str());
1425             }
1426             else
1427                cout << '\'' << (*I)->DescURI() << "' " << flNotDir((*I)->DestFile)  << std::endl;
1428          }
1429          else
1430             DisplayFileInPager((*I)->DestFile);
1431       }
1432       return Failed == false;
1433    }
1434
1435    return true;
1436 }
1437                                                                         /*}}}*/
1438 // DoIndexTargets - Lists all IndexTargets                              /*{{{*/
1439 static std::string format_key(std::string key)
1440 {
1441    // deb822 is case-insensitive, but the human eye prefers candy
1442    std::transform(key.begin(), key.end(), key.begin(), ::tolower);
1443    key[0] = ::toupper(key[0]);
1444    size_t found = key.find("_uri");
1445    if (found != std::string::npos)
1446       key.replace(found, 4, "-URI");
1447    while ((found = key.find('_')) != std::string::npos)
1448    {
1449       key[found] = '-';
1450       key[found + 1] = ::toupper(key[found + 1]);
1451    }
1452    return key;
1453 }
1454 static bool DoIndexTargets(CommandLine &CmdL)
1455 {
1456    pkgCacheFile CacheFile;
1457    pkgSourceList *SrcList = CacheFile.GetSourceList();
1458
1459    if (SrcList == NULL)
1460       return false;
1461
1462    std::string const Format = _config->Find("APT::Get::IndexTargets::Format");
1463    bool const ReleaseInfo = _config->FindB("APT::Get::IndexTargets::ReleaseInfo", true);
1464    bool Filtered = CmdL.FileSize() > 1;
1465    for (pkgSourceList::const_iterator S = SrcList->begin(); S != SrcList->end(); ++S)
1466    {
1467       std::vector<IndexTarget> const targets = (*S)->GetIndexTargets();
1468       std::map<std::string, string> AddOptions;
1469       if (ReleaseInfo)
1470       {
1471          AddOptions.insert(std::make_pair("TRUSTED", ((*S)->IsTrusted() ? "yes" : "no")));
1472          pkgCache &Cache = *CacheFile.GetPkgCache();
1473          pkgCache::RlsFileIterator const RlsFile = (*S)->FindInCache(Cache, false);
1474          if (RlsFile.end())
1475             continue;
1476 #define APT_RELEASE(X,Y) if (RlsFile.Y() != NULL) AddOptions.insert(std::make_pair(X, RlsFile.Y()))
1477          APT_RELEASE("CODENAME", Codename);
1478          APT_RELEASE("SUITE", Archive);
1479          APT_RELEASE("VERSION", Version);
1480          APT_RELEASE("ORIGIN", Origin);
1481          APT_RELEASE("LABEL", Label);
1482 #undef APT_RELEASE
1483       }
1484
1485       for (std::vector<IndexTarget>::const_iterator T = targets.begin(); T != targets.end(); ++T)
1486       {
1487          std::string filename = T->Option(ReleaseInfo ? IndexTarget::EXISTING_FILENAME : IndexTarget::FILENAME);
1488          if (filename.empty())
1489             continue;
1490
1491          std::ostringstream stanza;
1492          if (Filtered || Format.empty())
1493          {
1494             stanza << "MetaKey: " << T->MetaKey << "\n"
1495                << "ShortDesc: " << T->ShortDesc << "\n"
1496                << "Description: " << T->Description << "\n"
1497                << "URI: " << T->URI << "\n"
1498                << "Filename: " << filename << "\n"
1499                << "Optional: " << (T->IsOptional ? "yes" : "no") << "\n";
1500             for (std::map<std::string,std::string>::const_iterator O = AddOptions.begin(); O != AddOptions.end(); ++O)
1501                stanza << format_key(O->first) << ": " << O->second << "\n";
1502             for (std::map<std::string,std::string>::const_iterator O = T->Options.begin(); O != T->Options.end(); ++O)
1503                stanza << format_key(O->first) << ": " << O->second << "\n";
1504             stanza << "\n";
1505
1506             if (Filtered)
1507             {
1508                // that is a bit crude, but good enough for now
1509                bool found = true;
1510                std::string haystack = std::string("\n") + stanza.str() + "\n";
1511                std::transform(haystack.begin(), haystack.end(), haystack.begin(), ::tolower);
1512                size_t const filesize = CmdL.FileSize() - 1;
1513                for (size_t i = 0; i != filesize; ++i)
1514                {
1515                   std::string needle = std::string("\n") + CmdL.FileList[i + 1] + "\n";
1516                   std::transform(needle.begin(), needle.end(), needle.begin(), ::tolower);
1517                   if (haystack.find(needle) != std::string::npos)
1518                      continue;
1519                   found = false;
1520                   break;
1521                }
1522                if (found == false)
1523                   continue;
1524             }
1525          }
1526
1527          if (Format.empty())
1528             cout << stanza.str();
1529          else
1530          {
1531             std::string out = SubstVar(Format, "$(FILENAME)", filename);
1532             out = T->Format(out);
1533             for (std::map<std::string,std::string>::const_iterator O = AddOptions.begin(); O != AddOptions.end(); ++O)
1534                out = SubstVar(out, std::string("$(") + O->first + ")", O->second);
1535             cout << out << std::endl;
1536          }
1537       }
1538    }
1539
1540    return true;
1541 }
1542                                                                         /*}}}*/
1543 // ShowHelp - Show a help screen                                        /*{{{*/
1544 // ---------------------------------------------------------------------
1545 /* */
1546 static bool ShowHelp(CommandLine &)
1547 {
1548    ioprintf(cout, "%s %s (%s)\n", PACKAGE, PACKAGE_VERSION, COMMON_ARCH);
1549
1550    if (_config->FindB("version") == true)
1551    {
1552       cout << _("Supported modules:") << endl;
1553
1554       for (unsigned I = 0; I != pkgVersioningSystem::GlobalListLen; I++)
1555       {
1556          pkgVersioningSystem *VS = pkgVersioningSystem::GlobalList[I];
1557          if (_system != 0 && _system->VS == VS)
1558             cout << '*';
1559          else
1560             cout << ' ';
1561          cout << "Ver: " << VS->Label << endl;
1562
1563          /* Print out all the packaging systems that will work with
1564             this VS */
1565          for (unsigned J = 0; J != pkgSystem::GlobalListLen; J++)
1566          {
1567             pkgSystem *Sys = pkgSystem::GlobalList[J];
1568             if (_system == Sys)
1569                cout << '*';
1570             else
1571                cout << ' ';
1572             if (Sys->VS->TestCompatibility(*VS) == true)
1573                cout << "Pkg:  " << Sys->Label << " (Priority " << Sys->Score(*_config) << ")" << endl;
1574          }
1575       }
1576
1577       for (unsigned I = 0; I != pkgSourceList::Type::GlobalListLen; I++)
1578       {
1579          pkgSourceList::Type *Type = pkgSourceList::Type::GlobalList[I];
1580          cout << " S.L: '" << Type->Name << "' " << Type->Label << endl;
1581       }
1582
1583       for (unsigned I = 0; I != pkgIndexFile::Type::GlobalListLen; I++)
1584       {
1585          pkgIndexFile::Type *Type = pkgIndexFile::Type::GlobalList[I];
1586          cout << " Idx: " << Type->Label << endl;
1587       }
1588
1589       return true;
1590    }
1591
1592    cout <<
1593     _("Usage: apt-get [options] command\n"
1594       "       apt-get [options] install|remove pkg1 [pkg2 ...]\n"
1595       "       apt-get [options] source pkg1 [pkg2 ...]\n"
1596       "\n"
1597       "apt-get is a simple command line interface for downloading and\n"
1598       "installing packages. The most frequently used commands are update\n"
1599       "and install.\n"
1600       "\n"
1601       "Commands:\n"
1602       "   update - Retrieve new lists of packages\n"
1603       "   upgrade - Perform an upgrade\n"
1604       "   install - Install new packages (pkg is libc6 not libc6.deb)\n"
1605       "   remove - Remove packages\n"
1606       "   autoremove - Remove automatically all unused packages\n"
1607       "   purge - Remove packages and config files\n"
1608       "   source - Download source archives\n"
1609       "   build-dep - Configure build-dependencies for source packages\n"
1610       "   dist-upgrade - Distribution upgrade, see apt-get(8)\n"
1611       "   dselect-upgrade - Follow dselect selections\n"
1612       "   clean - Erase downloaded archive files\n"
1613       "   autoclean - Erase old downloaded archive files\n"
1614       "   check - Verify that there are no broken dependencies\n"
1615       "   changelog - Download and display the changelog for the given package\n"
1616       "   download - Download the binary package into the current directory\n"
1617       "\n"
1618       "Options:\n"
1619       "  -h  This help text.\n"
1620       "  -q  Loggable output - no progress indicator\n"
1621       "  -qq No output except for errors\n"
1622       "  -d  Download only - do NOT install or unpack archives\n"
1623       "  -s  No-act. Perform ordering simulation\n"
1624       "  -y  Assume Yes to all queries and do not prompt\n"
1625       "  -f  Attempt to correct a system with broken dependencies in place\n"
1626       "  -m  Attempt to continue if archives are unlocatable\n"
1627       "  -u  Show a list of upgraded packages as well\n"
1628       "  -b  Build the source package after fetching it\n"
1629       "  -V  Show verbose version numbers\n"
1630       "  -c=? Read this configuration file\n"
1631       "  -o=? Set an arbitrary configuration option, eg -o dir::cache=/tmp\n"
1632       "See the apt-get(8), sources.list(5) and apt.conf(5) manual\n"
1633       "pages for more information and options.\n"
1634       "                       This APT has Super Cow Powers.\n");
1635    return true;
1636 }
1637                                                                         /*}}}*/
1638 int main(int argc,const char *argv[])                                   /*{{{*/
1639 {
1640    CommandLine::Dispatch Cmds[] = {{"update",&DoUpdate},
1641                                    {"upgrade",&DoUpgrade},
1642                                    {"install",&DoInstall},
1643                                    {"remove",&DoInstall},
1644                                    {"purge",&DoInstall},
1645                                    {"autoremove",&DoInstall},
1646                                    {"markauto",&DoMarkAuto},
1647                                    {"unmarkauto",&DoMarkAuto},
1648                                    {"dist-upgrade",&DoDistUpgrade},
1649                                    {"dselect-upgrade",&DoDSelectUpgrade},
1650                                    {"build-dep",&DoBuildDep},
1651                                    {"clean",&DoClean},
1652                                    {"autoclean",&DoAutoClean},
1653                                    {"check",&DoCheck},
1654                                    {"source",&DoSource},
1655                                    {"download",&DoDownload},
1656                                    {"changelog",&DoChangelog},
1657                                    {"indextargets",&DoIndexTargets},
1658                                    {"moo",&DoMoo},
1659                                    {"help",&ShowHelp},
1660                                    {0,0}};
1661
1662    std::vector<CommandLine::Args> Args = getCommandArgs("apt-get", CommandLine::GetCommand(Cmds, argc, argv));
1663
1664    // Set up gettext support
1665    setlocale(LC_ALL,"");
1666    textdomain(PACKAGE);
1667
1668    // Parse the command line and initialize the package library
1669    CommandLine CmdL;
1670    ParseCommandLine(CmdL, Cmds, Args.data(), &_config, &_system, argc, argv, ShowHelp);
1671
1672    // see if we are in simulate mode
1673    CheckSimulateMode(CmdL);
1674
1675    // Init the signals
1676    InitSignals();
1677
1678    // Setup the output streams
1679    InitOutput();
1680
1681    // Match the operation
1682    CmdL.DispatchArg(Cmds);
1683
1684    // Print any errors or warnings found during parsing
1685    bool const Errors = _error->PendingError();
1686    if (_config->FindI("quiet",0) > 0)
1687       _error->DumpErrors();
1688    else
1689       _error->DumpErrors(GlobalError::DEBUG);
1690    return Errors == true ? 100 : 0;
1691 }
1692                                                                         /*}}}*/