apt-private/private-source.cc

   1 // Include Files                                                        /*{{{*/
   2 #include <config.h>
   3
   4 #include <apt-pkg/acquire-item.h>
   5 #include <apt-pkg/acquire.h>
   6 #include <apt-pkg/algorithms.h>
   7 #include <apt-pkg/aptconfiguration.h>
   8 #include <apt-pkg/cachefile.h>
   9 #include <apt-pkg/cacheiterators.h>
  10 #include <apt-pkg/cacheset.h>
  11 #include <apt-pkg/cmndline.h>
  12 #include <apt-pkg/configuration.h>
  13 #include <apt-pkg/depcache.h>
  14 #include <apt-pkg/error.h>
  15 #include <apt-pkg/fileutl.h>
  16 #include <apt-pkg/hashes.h>
  17 #include <apt-pkg/indexfile.h>
  18 #include <apt-pkg/metaindex.h>
  19 #include <apt-pkg/pkgcache.h>
  20 #include <apt-pkg/sourcelist.h>
  21 #include <apt-pkg/srcrecords.h>
  22 #include <apt-pkg/strutl.h>
  23 #include <apt-pkg/version.h>
  24
  25 #include <apt-private/private-cachefile.h>
  26 #include <apt-private/private-cacheset.h>
  27 #include <apt-private/private-download.h>
  28 #include <apt-private/private-install.h>
  29 #include <apt-private/private-source.h>
  30
  31 #include <stddef.h>
  32 #include <stdio.h>
  33 #include <stdlib.h>
  34 #include <string.h>
  35 #include <sys/stat.h>
  36 #include <unistd.h>
  37
  38 #include <iostream>
  39 #include <set>
  40 #include <string>
  41 #include <vector>
  42
  43 #include <apti18n.h>
  44                                                                         /*}}}*/
  45
  46 // TryToInstallBuildDep - Try to install a single package               /*{{{*/
  47 // ---------------------------------------------------------------------
  48 /* This used to be inlined in DoInstall, but with the advent of regex package
  49    name matching it was split out.. */
  50 static bool TryToInstallBuildDep(pkgCache::PkgIterator Pkg,pkgCacheFile &Cache,
  51                   pkgProblemResolver &Fix,bool Remove,bool BrokenFix,
  52                   bool AllowFail = true)
  53 {
  54    if (Cache[Pkg].CandidateVer == 0 && Pkg->ProvidesList != 0)
  55    {
  56       CacheSetHelperAPTGet helper(c1out);
  57       helper.showErrors(false);
  58       pkgCache::VerIterator Ver = helper.canNotFindNewestVer(Cache, Pkg);
  59       if (Ver.end() == false)
  60          Pkg = Ver.ParentPkg();
  61       else if (helper.showVirtualPackageErrors(Cache) == false)
  62          return AllowFail;
  63    }
  64
  65    if (_config->FindB("Debug::BuildDeps",false) == true)
  66    {
  67       if (Remove == true)
  68          std::cout << "  Trying to remove " << Pkg << std::endl;
  69       else
  70          std::cout << "  Trying to install " << Pkg << std::endl;
  71    }
  72
  73    if (Remove == true)
  74    {
  75       TryToRemove RemoveAction(Cache, &Fix);
  76       RemoveAction(Pkg.VersionList());
  77    } else if (Cache[Pkg].CandidateVer != 0) {
  78       TryToInstall InstallAction(Cache, &Fix, BrokenFix);
  79       InstallAction(Cache[Pkg].CandidateVerIter(Cache));
  80       InstallAction.doAutoInstall();
  81    } else
  82       return AllowFail;
  83
  84    return true;
  85 }
  86                                                                         /*}}}*/
  87 // GetReleaseFileForSourceRecord - Return Suite for the given srcrecord /*{{{*/
  88 static pkgCache::RlsFileIterator GetReleaseFileForSourceRecord(CacheFile &CacheFile,
  89       pkgSourceList *SrcList, pkgSrcRecords::Parser *Parse)
  90 {
  91    // try to find release
  92    const pkgIndexFile& CurrentIndexFile = Parse->Index();
  93
  94    for (pkgSourceList::const_iterator S = SrcList->begin();
  95          S != SrcList->end(); ++S)
  96    {
  97       std::vector<pkgIndexFile *> *Indexes = (*S)->GetIndexFiles();
  98       for (std::vector<pkgIndexFile *>::const_iterator IF = Indexes->begin();
  99             IF != Indexes->end(); ++IF)
 100       {
 101          if (&CurrentIndexFile == (*IF))
 102             return (*S)->FindInCache(CacheFile, false);
 103       }
 104    }
 105    return pkgCache::RlsFileIterator(CacheFile);
 106 }
 107                                                                         /*}}}*/
 108 // FindSrc - Find a source record                                       /*{{{*/
 109 static pkgSrcRecords::Parser *FindSrc(const char *Name,
 110                                pkgSrcRecords &SrcRecs,std::string &Src,
 111                                CacheFile &CacheFile)
 112 {
 113    std::string VerTag, UserRequestedVerTag;
 114    std::string ArchTag = "";
 115    std::string RelTag = _config->Find("APT::Default-Release");
 116    std::string TmpSrc = Name;
 117    pkgDepCache *Cache = CacheFile.GetDepCache();
 118
 119    // extract release
 120    size_t found = TmpSrc.find_last_of("/");
 121    if (found != std::string::npos)
 122    {
 123       RelTag = TmpSrc.substr(found+1);
 124       TmpSrc = TmpSrc.substr(0,found);
 125    }
 126    // extract the version
 127    found = TmpSrc.find_last_of("=");
 128    if (found != std::string::npos)
 129    {
 130       VerTag = UserRequestedVerTag = TmpSrc.substr(found+1);
 131       TmpSrc = TmpSrc.substr(0,found);
 132    }
 133    // extract arch
 134    found = TmpSrc.find_last_of(":");
 135    if (found != std::string::npos)
 136    {
 137       ArchTag = TmpSrc.substr(found+1);
 138       TmpSrc = TmpSrc.substr(0,found);
 139    }
 140
 141    /* Lookup the version of the package we would install if we were to
 142       install a version and determine the source package name, then look
 143       in the archive for a source package of the same name. */
 144    bool MatchSrcOnly = _config->FindB("APT::Get::Only-Source");
 145    pkgCache::PkgIterator Pkg;
 146    if (ArchTag != "")
 147       Pkg = Cache->FindPkg(TmpSrc, ArchTag);
 148    else
 149       Pkg = Cache->FindPkg(TmpSrc);
 150
 151    // if we can't find a package but the user qualified with a arch,
 152    // error out here
 153    if (Pkg.end() && ArchTag != "")
 154    {
 155       Src = Name;
 156       _error->Error(_("Can not find a package for architecture '%s'"),
 157             ArchTag.c_str());
 158       return 0;
 159    }
 160
 161    if (MatchSrcOnly == false && Pkg.end() == false)
 162    {
 163       if(VerTag != "" || RelTag != "" || ArchTag != "")
 164       {
 165          bool fuzzy = false;
 166          // we have a default release, try to locate the pkg. we do it like
 167          // this because GetCandidateVer() will not "downgrade", that means
 168          // "apt-get source -t stable apt" won't work on a unstable system
 169          for (pkgCache::VerIterator Ver = Pkg.VersionList();; ++Ver)
 170          {
 171             // try first only exact matches, later fuzzy matches
 172             if (Ver.end() == true)
 173             {
 174                if (fuzzy == true)
 175                   break;
 176                fuzzy = true;
 177                Ver = Pkg.VersionList();
 178                // exit right away from the Pkg.VersionList() loop if we
 179                // don't have any versions
 180                if (Ver.end() == true)
 181                   break;
 182             }
 183
 184             // ignore arches that are not for us
 185             if (ArchTag != "" && Ver.Arch() != ArchTag)
 186                continue;
 187
 188             // pick highest version for the arch unless the user wants
 189             // something else
 190             if (ArchTag != "" && VerTag == "" && RelTag == "")
 191                if(Cache->VS().CmpVersion(VerTag, Ver.VerStr()) < 0)
 192                   VerTag = Ver.VerStr();
 193
 194             // We match against a concrete version (or a part of this version)
 195             if (VerTag.empty() == false &&
 196                   (fuzzy == true || Cache->VS().CmpVersion(VerTag, Ver.VerStr()) != 0) && // exact match
 197                   (fuzzy == false || strncmp(VerTag.c_str(), Ver.VerStr(), VerTag.size()) != 0)) // fuzzy match
 198                continue;
 199
 200             for (pkgCache::VerFileIterator VF = Ver.FileList();
 201                   VF.end() == false; ++VF)
 202             {
 203                /* If this is the status file, and the current version is not the
 204                   version in the status file (ie it is not installed, or somesuch)
 205                   then it is not a candidate for installation, ever. This weeds
 206                   out bogus entries that may be due to config-file states, or
 207                   other. */
 208                if ((VF.File()->Flags & pkgCache::Flag::NotSource) ==
 209                      pkgCache::Flag::NotSource && Pkg.CurrentVer() != Ver)
 210                   continue;
 211
 212                // or we match against a release
 213                if(VerTag.empty() == false ||
 214                      (VF.File().Archive() != 0 && VF.File().Archive() == RelTag) ||
 215                      (VF.File().Codename() != 0 && VF.File().Codename() == RelTag))
 216                {
 217                   // the Version we have is possibly fuzzy or includes binUploads,
 218                   // so we use the Version of the SourcePkg (empty if same as package)
 219                   Src = Ver.SourcePkgName();
 220                   VerTag = Ver.SourceVerStr();
 221                   break;
 222                }
 223             }
 224             if (Src.empty() == false)
 225                break;
 226          }
 227       }
 228
 229       if (Src == "" && ArchTag != "")
 230       {
 231          if (VerTag != "")
 232             _error->Error(_("Can not find a package '%s' with version '%s'"),
 233                   Pkg.FullName().c_str(), VerTag.c_str());
 234          if (RelTag != "")
 235             _error->Error(_("Can not find a package '%s' with release '%s'"),
 236                   Pkg.FullName().c_str(), RelTag.c_str());
 237          Src = Name;
 238          return 0;
 239       }
 240
 241
 242       if (Src.empty() == true)
 243       {
 244          // if we don't have found a fitting package yet so we will
 245          // choose a good candidate and proceed with that.
 246          // Maybe we will find a source later on with the right VerTag
 247          // or RelTag
 248          pkgCache::VerIterator const Ver = Cache->GetCandidateVersion(Pkg);
 249          if (Ver.end() == false)
 250          {
 251             if (strcmp(Ver.SourcePkgName(),Ver.ParentPkg().Name()) != 0)
 252                Src = Ver.SourcePkgName();
 253             if (VerTag.empty() == true && strcmp(Ver.SourceVerStr(),Ver.VerStr()) != 0)
 254                VerTag = Ver.SourceVerStr();
 255          }
 256       }
 257    }
 258
 259    if (Src.empty() == true)
 260    {
 261       Src = TmpSrc;
 262    }
 263    else
 264    {
 265       /* if we have a source pkg name, make sure to only search
 266          for srcpkg names, otherwise apt gets confused if there
 267          is a binary package "pkg1" and a source package "pkg1"
 268          with the same name but that comes from different packages */
 269       MatchSrcOnly = true;
 270       if (Src != TmpSrc)
 271       {
 272          ioprintf(c1out, _("Picking '%s' as source package instead of '%s'\n"), Src.c_str(), TmpSrc.c_str());
 273       }
 274    }
 275
 276    // The best hit
 277    pkgSrcRecords::Parser *Last = 0;
 278    unsigned long Offset = 0;
 279    std::string Version;
 280    pkgSourceList *SrcList = CacheFile.GetSourceList();
 281
 282    /* Iterate over all of the hits, which includes the resulting
 283       binary packages in the search */
 284                pkgSrcRecords::Parser *Parse;
 285                while (true)
 286                {
 287                   SrcRecs.Restart();
 288                   while ((Parse = SrcRecs.Find(Src.c_str(), MatchSrcOnly)) != 0)
 289                   {
 290                      const std::string Ver = Parse->Version();
 291
 292                      // See if we need to look for a specific release tag
 293                      if (RelTag != "" && UserRequestedVerTag == "")
 294                      {
 295                         pkgCache::RlsFileIterator const Rls = GetReleaseFileForSourceRecord(CacheFile, SrcList, Parse);
 296                         if (Rls.end() == false)
 297                         {
 298                            if ((Rls->Archive != 0 && RelTag == Rls.Archive()) ||
 299                                  (Rls->Codename != 0 && RelTag == Rls.Codename()))
 300                            {
 301                               Last = Parse;
 302                               Offset = Parse->Offset();
 303                               Version = Ver;
 304                            }
 305                         }
 306                      }
 307
 308                      // Ignore all versions which doesn't fit
 309                      if (VerTag.empty() == false &&
 310                            Cache->VS().CmpVersion(VerTag, Ver) != 0) // exact match
 311                         continue;
 312
 313                      // Newer version or an exact match? Save the hit
 314                      if (Last == 0 || Cache->VS().CmpVersion(Version,Ver) < 0) {
 315                         Last = Parse;
 316                         Offset = Parse->Offset();
 317                         Version = Ver;
 318                      }
 319
 320                      // was the version check above an exact match?
 321                      // If so, we don't need to look further
 322                      if (VerTag.empty() == false && (VerTag == Ver))
 323                         break;
 324                   }
 325                   if (UserRequestedVerTag == "" && Version != "" && RelTag != "")
 326                      ioprintf(c1out, "Selected version '%s' (%s) for %s\n",
 327                            Version.c_str(), RelTag.c_str(), Src.c_str());
 328
 329                   if (Last != 0 || VerTag.empty() == true)
 330                      break;
 331                   _error->Error(_("Can not find version '%s' of package '%s'"), VerTag.c_str(), TmpSrc.c_str());
 332                   return 0;
 333                }
 334
 335                if (Last == 0 || Last->Jump(Offset) == false)
 336                   return 0;
 337
 338                return Last;
 339 }
 340                                                                         /*}}}*/
 341 // DoSource - Fetch a source archive                                    /*{{{*/
 342 // ---------------------------------------------------------------------
 343 /* Fetch souce packages */
 344 struct DscFile
 345 {
 346    std::string Package;
 347    std::string Version;
 348    std::string Dsc;
 349 };
 350 bool DoSource(CommandLine &CmdL)
 351 {
 352    CacheFile Cache;
 353    if (Cache.Open(false) == false)
 354       return false;
 355
 356    if (CmdL.FileSize() <= 1)
 357       return _error->Error(_("Must specify at least one package to fetch source for"));
 358
 359    // Read the source list
 360    if (Cache.BuildSourceList() == false)
 361       return false;
 362    pkgSourceList *List = Cache.GetSourceList();
 363
 364    // Create the text record parsers
 365    pkgSrcRecords SrcRecs(*List);
 366    if (_error->PendingError() == true)
 367       return false;
 368
 369    std::unique_ptr<DscFile[]> Dsc(new DscFile[CmdL.FileSize()]);
 370
 371    // insert all downloaded uris into this set to avoid downloading them
 372    // twice
 373    std::set<std::string> queued;
 374
 375    // Diff only mode only fetches .diff files
 376    bool const diffOnly = _config->FindB("APT::Get::Diff-Only", false);
 377    // Tar only mode only fetches .tar files
 378    bool const tarOnly = _config->FindB("APT::Get::Tar-Only", false);
 379    // Dsc only mode only fetches .dsc files
 380    bool const dscOnly = _config->FindB("APT::Get::Dsc-Only", false);
 381
 382    // Load the requestd sources into the fetcher
 383    aptAcquireWithTextStatus Fetcher;
 384    unsigned J = 0;
 385    std::vector<std::string> UntrustedList;
 386    for (const char **I = CmdL.FileList + 1; *I != 0; I++, J++)
 387    {
 388       std::string Src;
 389       pkgSrcRecords::Parser *Last = FindSrc(*I,SrcRecs,Src,Cache);
 390       if (Last == 0) {
 391          return _error->Error(_("Unable to find a source package for %s"),Src.c_str());
 392       }
 393
 394       if (Last->Index().IsTrusted() == false)
 395          UntrustedList.push_back(Src);
 396
 397       std::string srec = Last->AsStr();
 398       std::string::size_type pos = srec.find("\nVcs-");
 399       while (pos != std::string::npos)
 400       {
 401          pos += strlen("\nVcs-");
 402          std::string vcs = srec.substr(pos,srec.find(":",pos)-pos);
 403          if(vcs == "Browser")
 404          {
 405             pos = srec.find("\nVcs-", pos);
 406             continue;
 407          }
 408          pos += vcs.length()+2;
 409          std::string::size_type epos = srec.find("\n", pos);
 410          std::string const uri = srec.substr(pos,epos-pos);
 411          ioprintf(c1out, _("NOTICE: '%s' packaging is maintained in "
 412                   "the '%s' version control system at:\n"
 413                   "%s\n"),
 414                Src.c_str(), vcs.c_str(), uri.c_str());
 415          std::string vcscmd;
 416          if (vcs == "Bzr")
 417             vcscmd = "bzr branch " + uri;
 418          else if (vcs == "Git")
 419             vcscmd = "git clone " + uri;
 420
 421          if (vcscmd.empty() == false)
 422             ioprintf(c1out,_("Please use:\n%s\n"
 423                      "to retrieve the latest (possibly unreleased) "
 424                      "updates to the package.\n"),
 425                   vcscmd.c_str());
 426          break;
 427       }
 428
 429       // Back track
 430       std::vector<pkgSrcRecords::File2> Lst;
 431       if (Last->Files2(Lst) == false) {
 432          return false;
 433       }
 434
 435       // Load them into the fetcher
 436       for (std::vector<pkgSrcRecords::File2>::const_iterator I = Lst.begin();
 437             I != Lst.end(); ++I)
 438       {
 439          // Try to guess what sort of file it is we are getting.
 440          if (I->Type == "dsc")
 441          {
 442             Dsc[J].Package = Last->Package();
 443             Dsc[J].Version = Last->Version();
 444             Dsc[J].Dsc = flNotDir(I->Path);
 445          }
 446
 447          // Handle the only options so that multiple can be used at once
 448          if (diffOnly == true || tarOnly == true || dscOnly == true)
 449          {
 450             if ((diffOnly == true && I->Type == "diff") ||
 451                   (tarOnly == true && I->Type == "tar") ||
 452                   (dscOnly == true && I->Type == "dsc"))
 453                ; // Fine, we want this file downloaded
 454             else
 455                continue;
 456          }
 457
 458          // don't download the same uri twice (should this be moved to
 459          // the fetcher interface itself?)
 460          if(queued.find(Last->Index().ArchiveURI(I->Path)) != queued.end())
 461             continue;
 462          queued.insert(Last->Index().ArchiveURI(I->Path));
 463
 464          // check if we have a file with that md5 sum already localy
 465          std::string localFile = flNotDir(I->Path);
 466          if (FileExists(localFile) == true)
 467             if(I->Hashes.VerifyFile(localFile) == true)
 468             {
 469                ioprintf(c1out,_("Skipping already downloaded file '%s'\n"),
 470                      localFile.c_str());
 471                continue;
 472             }
 473
 474          // see if we have a hash (Acquire::ForceHash is the only way to have none)
 475          if (I->Hashes.usable() == false && _config->FindB("APT::Get::AllowUnauthenticated",false) == false)
 476          {
 477             ioprintf(c1out, "Skipping download of file '%s' as requested hashsum is not available for authentication\n",
 478                   localFile.c_str());
 479             continue;
 480          }
 481
 482          new pkgAcqFile(&Fetcher,Last->Index().ArchiveURI(I->Path),
 483                I->Hashes, I->FileSize, Last->Index().SourceInfo(*Last,*I), Src);
 484       }
 485    }
 486
 487    // Display statistics
 488    unsigned long long FetchBytes = Fetcher.FetchNeeded();
 489    unsigned long long FetchPBytes = Fetcher.PartialPresent();
 490    unsigned long long DebBytes = Fetcher.TotalNeeded();
 491
 492    if (CheckFreeSpaceBeforeDownload(".", (FetchBytes - FetchPBytes)) == false)
 493       return false;
 494
 495    // Number of bytes
 496    if (DebBytes != FetchBytes)
 497       //TRANSLATOR: The required space between number and unit is already included
 498       // in the replacement strings, so %sB will be correctly translate in e.g. 1,5 MB
 499       ioprintf(c1out,_("Need to get %sB/%sB of source archives.\n"),
 500             SizeToStr(FetchBytes).c_str(),SizeToStr(DebBytes).c_str());
 501    else
 502       //TRANSLATOR: The required space between number and unit is already included
 503       // in the replacement string, so %sB will be correctly translate in e.g. 1,5 MB
 504       ioprintf(c1out,_("Need to get %sB of source archives.\n"),
 505             SizeToStr(DebBytes).c_str());
 506
 507    if (_config->FindB("APT::Get::Simulate",false) == true)
 508    {
 509       for (unsigned I = 0; I != J; I++)
 510          ioprintf(std::cout,_("Fetch source %s\n"),Dsc[I].Package.c_str());
 511       return true;
 512    }
 513
 514    // Just print out the uris an exit if the --print-uris flag was used
 515    if (_config->FindB("APT::Get::Print-URIs") == true)
 516    {
 517       pkgAcquire::UriIterator I = Fetcher.UriBegin();
 518       for (; I != Fetcher.UriEnd(); ++I)
 519          std::cout << '\'' << I->URI << "' " << flNotDir(I->Owner->DestFile) << ' ' <<
 520             I->Owner->FileSize << ' ' << I->Owner->HashSum() << std::endl;
 521       return true;
 522    }
 523
 524    // check authentication status of the source as well
 525    if (UntrustedList.empty() == false && AuthPrompt(UntrustedList, false) == false)
 526       return false;
 527
 528    // Run it
 529    bool Failed = false;
 530    if (AcquireRun(Fetcher, 0, &Failed, NULL) == false || Failed == true)
 531    {
 532       return _error->Error(_("Failed to fetch some archives."));
 533    }
 534
 535    if (_config->FindB("APT::Get::Download-only",false) == true)
 536    {
 537       c1out << _("Download complete and in download only mode") << std::endl;
 538       return true;
 539    }
 540
 541    // Unpack the sources
 542    pid_t Process = ExecFork();
 543
 544    if (Process == 0)
 545    {
 546       bool const fixBroken = _config->FindB("APT::Get::Fix-Broken", false);
 547       for (unsigned I = 0; I != J; ++I)
 548       {
 549          std::string Dir = Dsc[I].Package + '-' + Cache->VS().UpstreamVersion(Dsc[I].Version.c_str());
 550
 551          // Diff only mode only fetches .diff files
 552          if (_config->FindB("APT::Get::Diff-Only",false) == true ||
 553                _config->FindB("APT::Get::Tar-Only",false) == true ||
 554                Dsc[I].Dsc.empty() == true)
 555             continue;
 556
 557          // See if the package is already unpacked
 558          struct stat Stat;
 559          if (fixBroken == false && stat(Dir.c_str(),&Stat) == 0 &&
 560                S_ISDIR(Stat.st_mode) != 0)
 561          {
 562             ioprintf(c0out ,_("Skipping unpack of already unpacked source in %s\n"),
 563                   Dir.c_str());
 564          }
 565          else
 566          {
 567             // Call dpkg-source
 568             std::string const sourceopts = _config->Find("DPkg::Source-Options", "-x");
 569             std::string S;
 570             strprintf(S, "%s %s %s",
 571                   _config->Find("Dir::Bin::dpkg-source","dpkg-source").c_str(),
 572                   sourceopts.c_str(), Dsc[I].Dsc.c_str());
 573             if (system(S.c_str()) != 0)
 574             {
 575                fprintf(stderr, _("Unpack command '%s' failed.\n"), S.c_str());
 576                fprintf(stderr, _("Check if the 'dpkg-dev' package is installed.\n"));
 577                _exit(1);
 578             }
 579          }
 580
 581          // Try to compile it with dpkg-buildpackage
 582          if (_config->FindB("APT::Get::Compile",false) == true)
 583          {
 584             std::string buildopts = _config->Find("APT::Get::Host-Architecture");
 585             if (buildopts.empty() == false)
 586                buildopts = "-a" + buildopts + " ";
 587
 588             // get all active build profiles
 589             std::string const profiles = APT::Configuration::getBuildProfilesString();
 590             if (profiles.empty() == false)
 591                buildopts.append(" -P").append(profiles).append(" ");
 592
 593             buildopts.append(_config->Find("DPkg::Build-Options","-b -uc"));
 594
 595             // Call dpkg-buildpackage
 596             std::string S;
 597             strprintf(S, "cd %s && %s %s",
 598                   Dir.c_str(),
 599                   _config->Find("Dir::Bin::dpkg-buildpackage","dpkg-buildpackage").c_str(),
 600                   buildopts.c_str());
 601
 602             if (system(S.c_str()) != 0)
 603             {
 604                fprintf(stderr, _("Build command '%s' failed.\n"), S.c_str());
 605                _exit(1);
 606             }
 607          }
 608       }
 609
 610       _exit(0);
 611    }
 612
 613    return ExecWait(Process, "dpkg-source");
 614 }
 615                                                                         /*}}}*/
 616 // DoBuildDep - Install/removes packages to satisfy build dependencies  /*{{{*/
 617 // ---------------------------------------------------------------------
 618 /* This function will look at the build depends list of the given source
 619    package and install the necessary packages to make it true, or fail. */
 620 bool DoBuildDep(CommandLine &CmdL)
 621 {
 622    CacheFile Cache;
 623
 624    _config->Set("APT::Install-Recommends", false);
 625
 626    bool WantLock = _config->FindB("APT::Get::Print-URIs", false) == false;
 627
 628    if (Cache.Open(WantLock) == false)
 629       return false;
 630
 631    if (CmdL.FileSize() <= 1)
 632       return _error->Error(_("Must specify at least one package to check builddeps for"));
 633
 634    // Read the source list
 635    if (Cache.BuildSourceList() == false)
 636       return false;
 637    pkgSourceList *List = Cache.GetSourceList();
 638
 639    // Create the text record parsers
 640    pkgSrcRecords SrcRecs(*List);
 641    if (_error->PendingError() == true)
 642       return false;
 643
 644    bool StripMultiArch;
 645    std::string hostArch = _config->Find("APT::Get::Host-Architecture");
 646    if (hostArch.empty() == false)
 647    {
 648       std::vector<std::string> archs = APT::Configuration::getArchitectures();
 649       if (std::find(archs.begin(), archs.end(), hostArch) == archs.end())
 650          return _error->Error(_("No architecture information available for %s. See apt.conf(5) APT::Architectures for setup"), hostArch.c_str());
 651       StripMultiArch = false;
 652    }
 653    else
 654       StripMultiArch = true;
 655
 656    unsigned J = 0;
 657    for (const char **I = CmdL.FileList + 1; *I != 0; I++, J++)
 658    {
 659       std::string Src;
 660       pkgSrcRecords::Parser *Last = 0;
 661       std::unique_ptr<pkgSrcRecords::Parser> LastOwner;
 662
 663       // an unpacked debian source tree
 664       using APT::String::Startswith;
 665       if ((Startswith(*I, "./") || Startswith(*I, "/")) &&
 666             DirectoryExists(*I))
 667       {
 668          ioprintf(c1out, _("Note, using directory '%s' to get the build dependencies\n"), *I);
 669          // FIXME: how can we make this more elegant?
 670          std::string TypeName = "Debian control file";
 671          pkgIndexFile::Type *Type = pkgIndexFile::Type::GetType(TypeName.c_str());
 672          if(Type != NULL)
 673             LastOwner.reset(Last = Type->CreateSrcPkgParser(*I));
 674       }
 675       // if its a local file (e.g. .dsc) use this
 676       else if (FileExists(*I))
 677       {
 678          ioprintf(c1out, _("Note, using file '%s' to get the build dependencies\n"), *I);
 679
 680          // see if we can get a parser for this pkgIndexFile type
 681          std::string TypeName = "Debian " + flExtension(*I) + " file";
 682          pkgIndexFile::Type *Type = pkgIndexFile::Type::GetType(TypeName.c_str());
 683          if(Type != NULL)
 684             LastOwner.reset(Last = Type->CreateSrcPkgParser(*I));
 685       } else {
 686          // normal case, search the cache for the source file
 687          Last = FindSrc(*I,SrcRecs,Src,Cache);
 688       }
 689
 690       if (Last == 0)
 691          return _error->Error(_("Unable to find a source package for %s"),Src.c_str());
 692
 693       // Process the build-dependencies
 694       std::vector<pkgSrcRecords::Parser::BuildDepRec> BuildDeps;
 695       // FIXME: Can't specify architecture to use for [wildcard] matching, so switch default arch temporary
 696       if (hostArch.empty() == false)
 697       {
 698          std::string nativeArch = _config->Find("APT::Architecture");
 699          _config->Set("APT::Architecture", hostArch);
 700          bool Success = Last->BuildDepends(BuildDeps, _config->FindB("APT::Get::Arch-Only", false), StripMultiArch);
 701          _config->Set("APT::Architecture", nativeArch);
 702          if (Success == false)
 703             return _error->Error(_("Unable to get build-dependency information for %s"),Src.c_str());
 704       }
 705       else if (Last->BuildDepends(BuildDeps, _config->FindB("APT::Get::Arch-Only", false), StripMultiArch) == false)
 706          return _error->Error(_("Unable to get build-dependency information for %s"),Src.c_str());
 707
 708       // Also ensure that build-essential packages are present
 709       Configuration::Item const *Opts = _config->Tree("APT::Build-Essential");
 710       if (Opts)
 711          Opts = Opts->Child;
 712       for (; Opts; Opts = Opts->Next)
 713       {
 714          if (Opts->Value.empty() == true)
 715             continue;
 716
 717          pkgSrcRecords::Parser::BuildDepRec rec;
 718          rec.Package = Opts->Value;
 719          rec.Type = pkgSrcRecords::Parser::BuildDependIndep;
 720          rec.Op = 0;
 721          BuildDeps.push_back(rec);
 722       }
 723
 724       if (BuildDeps.empty() == true)
 725       {
 726          ioprintf(c1out,_("%s has no build depends.\n"),Src.c_str());
 727          continue;
 728       }
 729
 730       // Install the requested packages
 731       std::vector <pkgSrcRecords::Parser::BuildDepRec>::iterator D;
 732       pkgProblemResolver Fix(Cache);
 733       bool skipAlternatives = false; // skip remaining alternatives in an or group
 734       for (D = BuildDeps.begin(); D != BuildDeps.end(); ++D)
 735       {
 736          bool hasAlternatives = (((*D).Op & pkgCache::Dep::Or) == pkgCache::Dep::Or);
 737
 738          if (skipAlternatives == true)
 739          {
 740             /*
 741              * if there are alternatives, we've already picked one, so skip
 742              * the rest
 743              *
 744              * TODO: this means that if there's a build-dep on A|B and B is
 745              * installed, we'll still try to install A; more importantly,
 746              * if A is currently broken, we cannot go back and try B. To fix
 747              * this would require we do a Resolve cycle for each package we
 748              * add to the install list. Ugh
 749              */
 750             if (!hasAlternatives)
 751                skipAlternatives = false; // end of or group
 752             continue;
 753          }
 754
 755          if ((*D).Type == pkgSrcRecords::Parser::BuildConflict ||
 756                (*D).Type == pkgSrcRecords::Parser::BuildConflictIndep)
 757          {
 758             pkgCache::GrpIterator Grp = Cache->FindGrp((*D).Package);
 759             // Build-conflicts on unknown packages are silently ignored
 760             if (Grp.end() == true)
 761                continue;
 762
 763             for (pkgCache::PkgIterator Pkg = Grp.PackageList(); Pkg.end() == false; Pkg = Grp.NextPkg(Pkg))
 764             {
 765                pkgCache::VerIterator IV = (*Cache)[Pkg].InstVerIter(*Cache);
 766                /*
 767                 * Remove if we have an installed version that satisfies the
 768                 * version criteria
 769                 */
 770                if (IV.end() == false &&
 771                      Cache->VS().CheckDep(IV.VerStr(),(*D).Op,(*D).Version.c_str()) == true)
 772                   TryToInstallBuildDep(Pkg,Cache,Fix,true,false);
 773             }
 774          }
 775          else // BuildDep || BuildDepIndep
 776          {
 777             if (_config->FindB("Debug::BuildDeps",false) == true)
 778                std::cout << "Looking for " << (*D).Package << "...\n";
 779
 780             pkgCache::PkgIterator Pkg;
 781
 782             // Cross-Building?
 783             if (StripMultiArch == false && D->Type != pkgSrcRecords::Parser::BuildDependIndep)
 784             {
 785                size_t const colon = D->Package.find(":");
 786                if (colon != std::string::npos)
 787                {
 788                   if (strcmp(D->Package.c_str() + colon, ":any") == 0 || strcmp(D->Package.c_str() + colon, ":native") == 0)
 789                      Pkg = Cache->FindPkg(D->Package.substr(0,colon));
 790                   else
 791                      Pkg = Cache->FindPkg(D->Package);
 792                }
 793                else
 794                   Pkg = Cache->FindPkg(D->Package, hostArch);
 795
 796                // a bad version either is invalid or doesn't satify dependency
 797 #define BADVER(Ver) (Ver.end() == true || \
 798       (D->Version.empty() == false && \
 799        Cache->VS().CheckDep(Ver.VerStr(),D->Op,D->Version.c_str()) == false))
 800
 801                APT::VersionList verlist;
 802                if (Pkg.end() == false)
 803                {
 804                   pkgCache::VerIterator Ver = (*Cache)[Pkg].InstVerIter(*Cache);
 805                   if (BADVER(Ver) == false)
 806                      verlist.insert(Ver);
 807                   Ver = (*Cache)[Pkg].CandidateVerIter(*Cache);
 808                   if (BADVER(Ver) == false)
 809                      verlist.insert(Ver);
 810                }
 811                if (verlist.empty() == true)
 812                {
 813                   pkgCache::PkgIterator BuildPkg = Cache->FindPkg(D->Package, "native");
 814                   if (BuildPkg.end() == false && Pkg != BuildPkg)
 815                   {
 816                      pkgCache::VerIterator Ver = (*Cache)[BuildPkg].InstVerIter(*Cache);
 817                      if (BADVER(Ver) == false)
 818                         verlist.insert(Ver);
 819                      Ver = (*Cache)[BuildPkg].CandidateVerIter(*Cache);
 820                      if (BADVER(Ver) == false)
 821                         verlist.insert(Ver);
 822                   }
 823                }
 824 #undef BADVER
 825
 826                std::string forbidden;
 827                // We need to decide if host or build arch, so find a version we can look at
 828                APT::VersionList::const_iterator Ver = verlist.begin();
 829                for (; Ver != verlist.end(); ++Ver)
 830                {
 831                   forbidden.clear();
 832                   if (Ver->MultiArch == pkgCache::Version::No || Ver->MultiArch == pkgCache::Version::All)
 833                   {
 834                      if (colon == std::string::npos)
 835                         Pkg = Ver.ParentPkg().Group().FindPkg(hostArch);
 836                      else if (strcmp(D->Package.c_str() + colon, ":any") == 0)
 837                         forbidden = "Multi-Arch: no";
 838                      else if (strcmp(D->Package.c_str() + colon, ":native") == 0)
 839                         Pkg = Ver.ParentPkg().Group().FindPkg("native");
 840                   }
 841                   else if (Ver->MultiArch == pkgCache::Version::Same)
 842                   {
 843                      if (colon == std::string::npos)
 844                         Pkg = Ver.ParentPkg().Group().FindPkg(hostArch);
 845                      else if (strcmp(D->Package.c_str() + colon, ":any") == 0)
 846                         forbidden = "Multi-Arch: same";
 847                      else if (strcmp(D->Package.c_str() + colon, ":native") == 0)
 848                         Pkg = Ver.ParentPkg().Group().FindPkg("native");
 849                   }
 850                   else if ((Ver->MultiArch & pkgCache::Version::Foreign) == pkgCache::Version::Foreign)
 851                   {
 852                      if (colon == std::string::npos)
 853                         Pkg = Ver.ParentPkg().Group().FindPkg("native");
 854                      else if (strcmp(D->Package.c_str() + colon, ":any") == 0 ||
 855                            strcmp(D->Package.c_str() + colon, ":native") == 0)
 856                         forbidden = "Multi-Arch: foreign";
 857                   }
 858                   else if ((Ver->MultiArch & pkgCache::Version::Allowed) == pkgCache::Version::Allowed)
 859                   {
 860                      if (colon == std::string::npos)
 861                         Pkg = Ver.ParentPkg().Group().FindPkg(hostArch);
 862                      else if (strcmp(D->Package.c_str() + colon, ":any") == 0)
 863                      {
 864                         // prefer any installed over preferred non-installed architectures
 865                         pkgCache::GrpIterator Grp = Ver.ParentPkg().Group();
 866                         // we don't check for version here as we are better of with upgrading than remove and install
 867                         for (Pkg = Grp.PackageList(); Pkg.end() == false; Pkg = Grp.NextPkg(Pkg))
 868                            if (Pkg.CurrentVer().end() == false)
 869                               break;
 870                         if (Pkg.end() == true)
 871                            Pkg = Grp.FindPreferredPkg(true);
 872                      }
 873                      else if (strcmp(D->Package.c_str() + colon, ":native") == 0)
 874                         Pkg = Ver.ParentPkg().Group().FindPkg("native");
 875                   }
 876
 877                   if (forbidden.empty() == false)
 878                   {
 879                      if (_config->FindB("Debug::BuildDeps",false) == true)
 880                         std::cout << D->Package.substr(colon, std::string::npos) << " is not allowed from " << forbidden << " package " << (*D).Package << " (" << Ver.VerStr() << ")" << std::endl;
 881                      continue;
 882                   }
 883
 884                   //we found a good version
 885                   break;
 886                }
 887                if (Ver == verlist.end())
 888                {
 889                   if (_config->FindB("Debug::BuildDeps",false) == true)
 890                      std::cout << " No multiarch info as we have no satisfying installed nor candidate for " << D->Package << " on build or host arch" << std::endl;
 891
 892                   if (forbidden.empty() == false)
 893                   {
 894                      if (hasAlternatives)
 895                         continue;
 896                      return _error->Error(_("%s dependency for %s can't be satisfied "
 897                               "because %s is not allowed on '%s' packages"),
 898                            Last->BuildDepType(D->Type), Src.c_str(),
 899                            D->Package.c_str(), forbidden.c_str());
 900                   }
 901                }
 902             }
 903             else
 904                Pkg = Cache->FindPkg(D->Package);
 905
 906             if (Pkg.end() == true || (Pkg->VersionList == 0 && Pkg->ProvidesList == 0))
 907             {
 908                if (_config->FindB("Debug::BuildDeps",false) == true)
 909                   std::cout << " (not found)" << (*D).Package << std::endl;
 910
 911                if (hasAlternatives)
 912                   continue;
 913
 914                return _error->Error(_("%s dependency for %s cannot be satisfied "
 915                         "because the package %s cannot be found"),
 916                      Last->BuildDepType((*D).Type),Src.c_str(),
 917                      (*D).Package.c_str());
 918             }
 919
 920             pkgCache::VerIterator IV = (*Cache)[Pkg].InstVerIter(*Cache);
 921             if (IV.end() == false)
 922             {
 923                if (_config->FindB("Debug::BuildDeps",false) == true)
 924                   std::cout << "  Is installed\n";
 925
 926                if (D->Version.empty() == true ||
 927                      Cache->VS().CheckDep(IV.VerStr(),(*D).Op,(*D).Version.c_str()) == true)
 928                {
 929                   skipAlternatives = hasAlternatives;
 930                   continue;
 931                }
 932
 933                if (_config->FindB("Debug::BuildDeps",false) == true)
 934                   std::cout << "    ...but the installed version doesn't meet the version requirement\n";
 935
 936                if (((*D).Op & pkgCache::Dep::LessEq) == pkgCache::Dep::LessEq)
 937                   return _error->Error(_("Failed to satisfy %s dependency for %s: Installed package %s is too new"),
 938                         Last->BuildDepType((*D).Type), Src.c_str(), Pkg.FullName(true).c_str());
 939             }
 940
 941             // Only consider virtual packages if there is no versioned dependency
 942             if ((*D).Version.empty() == true)
 943             {
 944                /*
 945                 * If this is a virtual package, we need to check the list of
 946                 * packages that provide it and see if any of those are
 947                 * installed
 948                 */
 949                pkgCache::PrvIterator Prv = Pkg.ProvidesList();
 950                for (; Prv.end() != true; ++Prv)
 951                {
 952                   if (_config->FindB("Debug::BuildDeps",false) == true)
 953                      std::cout << "  Checking provider " << Prv.OwnerPkg().FullName() << std::endl;
 954
 955                   if ((*Cache)[Prv.OwnerPkg()].InstVerIter(*Cache).end() == false)
 956                      break;
 957                }
 958
 959                if (Prv.end() == false)
 960                {
 961                   if (_config->FindB("Debug::BuildDeps",false) == true)
 962                      std::cout << "  Is provided by installed package " << Prv.OwnerPkg().FullName() << std::endl;
 963                   skipAlternatives = hasAlternatives;
 964                   continue;
 965                }
 966             }
 967             else // versioned dependency
 968             {
 969                pkgCache::VerIterator CV = (*Cache)[Pkg].CandidateVerIter(*Cache);
 970                if (CV.end() == true ||
 971                      Cache->VS().CheckDep(CV.VerStr(),(*D).Op,(*D).Version.c_str()) == false)
 972                {
 973                   if (hasAlternatives)
 974                      continue;
 975                   else if (CV.end() == false)
 976                      return _error->Error(_("%s dependency for %s cannot be satisfied "
 977                               "because candidate version of package %s "
 978                               "can't satisfy version requirements"),
 979                            Last->BuildDepType(D->Type), Src.c_str(),
 980                            D->Package.c_str());
 981                   else
 982                      return _error->Error(_("%s dependency for %s cannot be satisfied "
 983                               "because package %s has no candidate version"),
 984                            Last->BuildDepType(D->Type), Src.c_str(),
 985                            D->Package.c_str());
 986                }
 987             }
 988
 989             if (TryToInstallBuildDep(Pkg,Cache,Fix,false,false,false) == true)
 990             {
 991                // We successfully installed something; skip remaining alternatives
 992                skipAlternatives = hasAlternatives;
 993                if(_config->FindB("APT::Get::Build-Dep-Automatic", false) == true)
 994                   Cache->MarkAuto(Pkg, true);
 995                continue;
 996             }
 997             else if (hasAlternatives)
 998             {
 999                if (_config->FindB("Debug::BuildDeps",false) == true)
1000                   std::cout << "  Unsatisfiable, trying alternatives\n";
1001                continue;
1002             }
1003             else
1004             {
1005                return _error->Error(_("Failed to satisfy %s dependency for %s: %s"),
1006                      Last->BuildDepType((*D).Type),
1007                      Src.c_str(),
1008                      (*D).Package.c_str());
1009             }
1010          }
1011       }
1012
1013       if (Fix.Resolve(true) == false)
1014          _error->Discard();
1015
1016       // Now we check the state of the packages,
1017       if (Cache->BrokenCount() != 0)
1018       {
1019          ShowBroken(std::cout, Cache, false);
1020          return _error->Error(_("Build-dependencies for %s could not be satisfied."),*I);
1021       }
1022    }
1023
1024    if (InstallPackages(Cache, false, true) == false)
1025       return _error->Error(_("Failed to process build dependencies"));
1026    return true;
1027 }
1028                                                                         /*}}}*/