cmdline/apt-cache.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: apt-cache.cc,v 1.72 2004/04/30 04:34:03 mdz Exp $
   4 /* ######################################################################
   5
   6    apt-cache - Manages the cache files
   7
   8    apt-cache provides some functions fo manipulating the cache files.
   9    It uses the command line interface common to all the APT tools.
  10
  11    Returns 100 on failure, 0 on success.
  12
  13    ##################################################################### */
  14                                                                         /*}}}*/
  15 // Include Files                                                        /*{{{*/
  16 #include <apt-pkg/error.h>
  17 #include <apt-pkg/pkgcachegen.h>
  18 #include <apt-pkg/init.h>
  19 #include <apt-pkg/progress.h>
  20 #include <apt-pkg/sourcelist.h>
  21 #include <apt-pkg/cmndline.h>
  22 #include <apt-pkg/strutl.h>
  23 #include <apt-pkg/pkgrecords.h>
  24 #include <apt-pkg/srcrecords.h>
  25 #include <apt-pkg/version.h>
  26 #include <apt-pkg/policy.h>
  27 #include <apt-pkg/tagfile.h>
  28 #include <apt-pkg/algorithms.h>
  29 #include <apt-pkg/sptr.h>
  30
  31 #include <config.h>
  32 #include <apti18n.h>
  33
  34 #include <locale.h>
  35 #include <iostream>
  36 #include <unistd.h>
  37 #include <errno.h>
  38 #include <regex.h>
  39 #include <stdio.h>
  40
  41 #include <iomanip>
  42                                                                         /*}}}*/
  43
  44 using namespace std;
  45
  46 pkgCache *GCache = 0;
  47 pkgSourceList *SrcList = 0;
  48
  49 // LocalitySort - Sort a version list by package file locality          /*{{{*/
  50 // ---------------------------------------------------------------------
  51 /* */
  52 int LocalityCompare(const void *a, const void *b)
  53 {
  54    pkgCache::VerFile *A = *(pkgCache::VerFile **)a;
  55    pkgCache::VerFile *B = *(pkgCache::VerFile **)b;
  56
  57    if (A == 0 && B == 0)
  58       return 0;
  59    if (A == 0)
  60       return 1;
  61    if (B == 0)
  62       return -1;
  63
  64    if (A->File == B->File)
  65       return A->Offset - B->Offset;
  66    return A->File - B->File;
  67 }
  68
  69 void LocalitySort(pkgCache::VerFile **begin,
  70                   unsigned long Count,size_t Size)
  71 {
  72    qsort(begin,Count,Size,LocalityCompare);
  73 }
  74
  75 void LocalitySort(pkgCache::DescFile **begin,
  76                   unsigned long Count,size_t Size)
  77 {
  78    qsort(begin,Count,Size,LocalityCompare);
  79 }
  80                                                                         /*}}}*/
  81 // UnMet - Show unmet dependencies                                      /*{{{*/
  82 // ---------------------------------------------------------------------
  83 /* */
  84 bool UnMet(CommandLine &CmdL)
  85 {
  86    pkgCache &Cache = *GCache;
  87    bool Important = _config->FindB("APT::Cache::Important",false);
  88
  89    for (pkgCache::PkgIterator P = Cache.PkgBegin(); P.end() == false; P++)
  90    {
  91       for (pkgCache::VerIterator V = P.VersionList(); V.end() == false; V++)
  92       {
  93          bool Header = false;
  94          for (pkgCache::DepIterator D = V.DependsList(); D.end() == false;)
  95          {
  96             // Collect or groups
  97             pkgCache::DepIterator Start;
  98             pkgCache::DepIterator End;
  99             D.GlobOr(Start,End);
 100
 101             // Skip conflicts and replaces
 102             if (End->Type != pkgCache::Dep::PreDepends &&
 103                 End->Type != pkgCache::Dep::Depends &&
 104                 End->Type != pkgCache::Dep::Suggests &&
 105                 End->Type != pkgCache::Dep::Recommends)
 106                continue;
 107
 108             // Important deps only
 109             if (Important == true)
 110                if (End->Type != pkgCache::Dep::PreDepends &&
 111                    End->Type != pkgCache::Dep::Depends)
 112                   continue;
 113
 114             // Verify the or group
 115             bool OK = false;
 116             pkgCache::DepIterator RealStart = Start;
 117             do
 118             {
 119                // See if this dep is Ok
 120                pkgCache::Version **VList = Start.AllTargets();
 121                if (*VList != 0)
 122                {
 123                   OK = true;
 124                   delete [] VList;
 125                   break;
 126                }
 127                delete [] VList;
 128
 129                if (Start == End)
 130                   break;
 131                Start++;
 132             }
 133             while (1);
 134
 135             // The group is OK
 136             if (OK == true)
 137                continue;
 138
 139             // Oops, it failed..
 140             if (Header == false)
 141                ioprintf(cout,_("Package %s version %s has an unmet dep:\n"),
 142                         P.Name(),V.VerStr());
 143             Header = true;
 144
 145             // Print out the dep type
 146             cout << " " << End.DepType() << ": ";
 147
 148             // Show the group
 149             Start = RealStart;
 150             do
 151             {
 152                cout << Start.TargetPkg().Name();
 153                if (Start.TargetVer() != 0)
 154                   cout << " (" << Start.CompType() << " " << Start.TargetVer() <<
 155                   ")";
 156                if (Start == End)
 157                   break;
 158                cout << " | ";
 159                Start++;
 160             }
 161             while (1);
 162
 163             cout << endl;
 164          }
 165       }
 166    }
 167    return true;
 168 }
 169                                                                         /*}}}*/
 170 // DumpPackage - Show a dump of a package record                        /*{{{*/
 171 // ---------------------------------------------------------------------
 172 /* */
 173 bool DumpPackage(CommandLine &CmdL)
 174 {
 175    pkgCache &Cache = *GCache;
 176    for (const char **I = CmdL.FileList + 1; *I != 0; I++)
 177    {
 178       pkgCache::PkgIterator Pkg = Cache.FindPkg(*I);
 179       if (Pkg.end() == true)
 180       {
 181          _error->Warning(_("Unable to locate package %s"),*I);
 182          continue;
 183       }
 184
 185       cout << "Package: " << Pkg.Name() << endl;
 186       cout << "Versions: " << endl;
 187       for (pkgCache::VerIterator Cur = Pkg.VersionList(); Cur.end() != true; Cur++)
 188       {
 189          cout << Cur.VerStr();
 190          for (pkgCache::VerFileIterator Vf = Cur.FileList(); Vf.end() == false; Vf++)
 191             cout << " (" << Vf.File().FileName() << ")";
 192          cout << endl;
 193          for (pkgCache::DescIterator D = Cur.DescriptionList(); D.end() == false; D++)
 194          {
 195             cout << " Description Language: " << D.LanguageCode() << endl
 196                  << "                 File: " << D.FileList().File().FileName() << endl
 197                  << "                  MD5: " << D.md5() << endl;
 198          }
 199          cout << endl;
 200       }
 201
 202       cout << endl;
 203
 204       cout << "Reverse Depends: " << endl;
 205       for (pkgCache::DepIterator D = Pkg.RevDependsList(); D.end() != true; D++)
 206       {
 207          cout << "  " << D.ParentPkg().Name() << ',' << D.TargetPkg().Name();
 208          if (D->Version != 0)
 209             cout << ' ' << DeNull(D.TargetVer()) << endl;
 210          else
 211             cout << endl;
 212       }
 213
 214       cout << "Dependencies: " << endl;
 215       for (pkgCache::VerIterator Cur = Pkg.VersionList(); Cur.end() != true; Cur++)
 216       {
 217          cout << Cur.VerStr() << " - ";
 218          for (pkgCache::DepIterator Dep = Cur.DependsList(); Dep.end() != true; Dep++)
 219             cout << Dep.TargetPkg().Name() << " (" << (int)Dep->CompareOp << " " << DeNull(Dep.TargetVer()) << ") ";
 220          cout << endl;
 221       }
 222
 223       cout << "Provides: " << endl;
 224       for (pkgCache::VerIterator Cur = Pkg.VersionList(); Cur.end() != true; Cur++)
 225       {
 226          cout << Cur.VerStr() << " - ";
 227          for (pkgCache::PrvIterator Prv = Cur.ProvidesList(); Prv.end() != true; Prv++)
 228             cout << Prv.ParentPkg().Name() << " ";
 229          cout << endl;
 230       }
 231       cout << "Reverse Provides: " << endl;
 232       for (pkgCache::PrvIterator Prv = Pkg.ProvidesList(); Prv.end() != true; Prv++)
 233          cout << Prv.OwnerPkg().Name() << " " << Prv.OwnerVer().VerStr() << endl;
 234    }
 235
 236    return true;
 237 }
 238                                                                         /*}}}*/
 239 // Stats - Dump some nice statistics                                    /*{{{*/
 240 // ---------------------------------------------------------------------
 241 /* */
 242 bool Stats(CommandLine &Cmd)
 243 {
 244    pkgCache &Cache = *GCache;
 245    cout << _("Total package names: ") << Cache.Head().PackageCount << " (" <<
 246       SizeToStr(Cache.Head().PackageCount*Cache.Head().PackageSz) << ')' << endl;
 247
 248    int Normal = 0;
 249    int Virtual = 0;
 250    int NVirt = 0;
 251    int DVirt = 0;
 252    int Missing = 0;
 253    pkgCache::PkgIterator I = Cache.PkgBegin();
 254    for (;I.end() != true; I++)
 255    {
 256       if (I->VersionList != 0 && I->ProvidesList == 0)
 257       {
 258          Normal++;
 259          continue;
 260       }
 261
 262       if (I->VersionList != 0 && I->ProvidesList != 0)
 263       {
 264          NVirt++;
 265          continue;
 266       }
 267
 268       if (I->VersionList == 0 && I->ProvidesList != 0)
 269       {
 270          // Only 1 provides
 271          if (I.ProvidesList()->NextProvides == 0)
 272          {
 273             DVirt++;
 274          }
 275          else
 276             Virtual++;
 277          continue;
 278       }
 279       if (I->VersionList == 0 && I->ProvidesList == 0)
 280       {
 281          Missing++;
 282          continue;
 283       }
 284    }
 285    cout << _("  Normal packages: ") << Normal << endl;
 286    cout << _("  Pure virtual packages: ") << Virtual << endl;
 287    cout << _("  Single virtual packages: ") << DVirt << endl;
 288    cout << _("  Mixed virtual packages: ") << NVirt << endl;
 289    cout << _("  Missing: ") << Missing << endl;
 290
 291    cout << _("Total distinct versions: ") << Cache.Head().VersionCount << " (" <<
 292       SizeToStr(Cache.Head().VersionCount*Cache.Head().VersionSz) << ')' << endl;
 293    cout << _("Total distinct descriptions: ") << Cache.Head().DescriptionCount << " (" <<
 294       SizeToStr(Cache.Head().DescriptionCount*Cache.Head().DescriptionSz) << ')' << endl;
 295    cout << _("Total dependencies: ") << Cache.Head().DependsCount << " (" <<
 296       SizeToStr(Cache.Head().DependsCount*Cache.Head().DependencySz) << ')' << endl;
 297
 298    cout << _("Total ver/file relations: ") << Cache.Head().VerFileCount << " (" <<
 299       SizeToStr(Cache.Head().VerFileCount*Cache.Head().VerFileSz) << ')' << endl;
 300    cout << _("Total Desc/File relations: ") << Cache.Head().DescFileCount << " (" <<
 301       SizeToStr(Cache.Head().DescFileCount*Cache.Head().DescFileSz) << ')' << endl;
 302    cout << _("Total Provides mappings: ") << Cache.Head().ProvidesCount << " (" <<
 303       SizeToStr(Cache.Head().ProvidesCount*Cache.Head().ProvidesSz) << ')' << endl;
 304
 305    // String list stats
 306    unsigned long Size = 0;
 307    unsigned long Count = 0;
 308    for (pkgCache::StringItem *I = Cache.StringItemP + Cache.Head().StringList;
 309         I!= Cache.StringItemP; I = Cache.StringItemP + I->NextItem)
 310    {
 311       Count++;
 312       Size += strlen(Cache.StrP + I->String) + 1;
 313    }
 314    cout << _("Total globbed strings: ") << Count << " (" << SizeToStr(Size) << ')' << endl;
 315
 316    unsigned long DepVerSize = 0;
 317    for (pkgCache::PkgIterator P = Cache.PkgBegin(); P.end() == false; P++)
 318    {
 319       for (pkgCache::VerIterator V = P.VersionList(); V.end() == false; V++)
 320       {
 321          for (pkgCache::DepIterator D = V.DependsList(); D.end() == false; D++)
 322          {
 323             if (D->Version != 0)
 324                DepVerSize += strlen(D.TargetVer()) + 1;
 325          }
 326       }
 327    }
 328    cout << _("Total dependency version space: ") << SizeToStr(DepVerSize) << endl;
 329
 330    unsigned long Slack = 0;
 331    for (int I = 0; I != 7; I++)
 332       Slack += Cache.Head().Pools[I].ItemSize*Cache.Head().Pools[I].Count;
 333    cout << _("Total slack space: ") << SizeToStr(Slack) << endl;
 334
 335    unsigned long Total = 0;
 336    Total = Slack + Size + Cache.Head().DependsCount*Cache.Head().DependencySz +
 337            Cache.Head().VersionCount*Cache.Head().VersionSz +
 338            Cache.Head().PackageCount*Cache.Head().PackageSz +
 339            Cache.Head().VerFileCount*Cache.Head().VerFileSz +
 340            Cache.Head().ProvidesCount*Cache.Head().ProvidesSz;
 341    cout << _("Total space accounted for: ") << SizeToStr(Total) << endl;
 342
 343    return true;
 344 }
 345                                                                         /*}}}*/
 346 // Dump - show everything                                               /*{{{*/
 347 // ---------------------------------------------------------------------
 348 /* This is worthless except fer debugging things */
 349 bool Dump(CommandLine &Cmd)
 350 {
 351    pkgCache &Cache = *GCache;
 352    cout << "Using Versioning System: " << Cache.VS->Label << endl;
 353
 354    for (pkgCache::PkgIterator P = Cache.PkgBegin(); P.end() == false; P++)
 355    {
 356       cout << "Package: " << P.Name() << endl;
 357       for (pkgCache::VerIterator V = P.VersionList(); V.end() == false; V++)
 358       {
 359          cout << " Version: " << V.VerStr() << endl;
 360          cout << "     File: " << V.FileList().File().FileName() << endl;
 361          for (pkgCache::DepIterator D = V.DependsList(); D.end() == false; D++)
 362             cout << "  Depends: " << D.TargetPkg().Name() << ' ' <<
 363                              DeNull(D.TargetVer()) << endl;
 364          for (pkgCache::DescIterator D = V.DescriptionList(); D.end() == false; D++)
 365          {
 366             cout << " Description Language: " << D.LanguageCode() << endl
 367                  << "                 File: " << D.FileList().File().FileName() << endl
 368                  << "                  MD5: " << D.md5() << endl;
 369          }
 370       }
 371    }
 372
 373    for (pkgCache::PkgFileIterator F = Cache.FileBegin(); F.end() == false; F++)
 374    {
 375       cout << "File: " << F.FileName() << endl;
 376       cout << " Type: " << F.IndexType() << endl;
 377       cout << " Size: " << F->Size << endl;
 378       cout << " ID: " << F->ID << endl;
 379       cout << " Flags: " << F->Flags << endl;
 380       cout << " Time: " << TimeRFC1123(F->mtime) << endl;
 381       cout << " Archive: " << DeNull(F.Archive()) << endl;
 382       cout << " Component: " << DeNull(F.Component()) << endl;
 383       cout << " Version: " << DeNull(F.Version()) << endl;
 384       cout << " Origin: " << DeNull(F.Origin()) << endl;
 385       cout << " Site: " << DeNull(F.Site()) << endl;
 386       cout << " Label: " << DeNull(F.Label()) << endl;
 387       cout << " Architecture: " << DeNull(F.Architecture()) << endl;
 388    }
 389
 390    return true;
 391 }
 392                                                                         /*}}}*/
 393 // DumpAvail - Print out the available list                             /*{{{*/
 394 // ---------------------------------------------------------------------
 395 /* This is needed to make dpkg --merge happy.. I spent a bit of time to
 396    make this run really fast, perhaps I went a little overboard.. */
 397 bool DumpAvail(CommandLine &Cmd)
 398 {
 399    pkgCache &Cache = *GCache;
 400
 401    pkgPolicy Plcy(&Cache);
 402    if (ReadPinFile(Plcy) == false || ReadPinDir(Plcy) == false)
 403       return false;
 404
 405    unsigned long Count = Cache.HeaderP->PackageCount+1;
 406    pkgCache::VerFile **VFList = new pkgCache::VerFile *[Count];
 407    memset(VFList,0,sizeof(*VFList)*Count);
 408
 409    // Map versions that we want to write out onto the VerList array.
 410    for (pkgCache::PkgIterator P = Cache.PkgBegin(); P.end() == false; P++)
 411    {
 412       if (P->VersionList == 0)
 413          continue;
 414
 415       /* Find the proper version to use. If the policy says there are no
 416          possible selections we return the installed version, if available..
 417          This prevents dselect from making it obsolete. */
 418       pkgCache::VerIterator V = Plcy.GetCandidateVer(P);
 419       if (V.end() == true)
 420       {
 421          if (P->CurrentVer == 0)
 422             continue;
 423          V = P.CurrentVer();
 424       }
 425
 426       pkgCache::VerFileIterator VF = V.FileList();
 427       for (; VF.end() == false ; VF++)
 428          if ((VF.File()->Flags & pkgCache::Flag::NotSource) == 0)
 429             break;
 430
 431       /* Okay, here we have a bit of a problem.. The policy has selected the
 432          currently installed package - however it only exists in the
 433          status file.. We need to write out something or dselect will mark
 434          the package as obsolete! Thus we emit the status file entry, but
 435          below we remove the status line to make it valid for the
 436          available file. However! We only do this if their do exist *any*
 437          non-source versions of the package - that way the dselect obsolete
 438          handling works OK. */
 439       if (VF.end() == true)
 440       {
 441          for (pkgCache::VerIterator Cur = P.VersionList(); Cur.end() != true; Cur++)
 442          {
 443             for (VF = Cur.FileList(); VF.end() == false; VF++)
 444             {
 445                if ((VF.File()->Flags & pkgCache::Flag::NotSource) == 0)
 446                {
 447                   VF = V.FileList();
 448                   break;
 449                }
 450             }
 451
 452             if (VF.end() == false)
 453                break;
 454          }
 455       }
 456
 457       VFList[P->ID] = VF;
 458    }
 459
 460    LocalitySort(VFList,Count,sizeof(*VFList));
 461
 462    // Iterate over all the package files and write them out.
 463    char *Buffer = new char[Cache.HeaderP->MaxVerFileSize+10];
 464    for (pkgCache::VerFile **J = VFList; *J != 0;)
 465    {
 466       pkgCache::PkgFileIterator File(Cache,(*J)->File + Cache.PkgFileP);
 467       if (File.IsOk() == false)
 468       {
 469          _error->Error(_("Package file %s is out of sync."),File.FileName());
 470          break;
 471       }
 472
 473       FileFd PkgF(File.FileName(),FileFd::ReadOnly);
 474       if (_error->PendingError() == true)
 475          break;
 476
 477       /* Write all of the records from this package file, since we
 478          already did locality sorting we can now just seek through the
 479          file in read order. We apply 1 more optimization here, since often
 480          there will be < 1 byte gaps between records (for the \n) we read that
 481          into the next buffer and offset a bit.. */
 482       unsigned long Pos = 0;
 483       for (; *J != 0; J++)
 484       {
 485          if ((*J)->File + Cache.PkgFileP != File)
 486             break;
 487
 488          const pkgCache::VerFile &VF = **J;
 489
 490          // Read the record and then write it out again.
 491          unsigned long Jitter = VF.Offset - Pos;
 492          if (Jitter > 8)
 493          {
 494             if (PkgF.Seek(VF.Offset) == false)
 495                break;
 496             Jitter = 0;
 497          }
 498
 499          if (PkgF.Read(Buffer,VF.Size + Jitter) == false)
 500             break;
 501          Buffer[VF.Size + Jitter] = '\n';
 502
 503          // See above..
 504          if ((File->Flags & pkgCache::Flag::NotSource) == pkgCache::Flag::NotSource)
 505          {
 506             pkgTagSection Tags;
 507             TFRewriteData RW[] = {{"Status",0},{"Config-Version",0},{}};
 508             const char *Zero = 0;
 509             if (Tags.Scan(Buffer+Jitter,VF.Size+1) == false ||
 510                 TFRewrite(stdout,Tags,&Zero,RW) == false)
 511             {
 512                _error->Error("Internal Error, Unable to parse a package record");
 513                break;
 514             }
 515             fputc('\n',stdout);
 516          }
 517          else
 518          {
 519             if (fwrite(Buffer+Jitter,VF.Size+1,1,stdout) != 1)
 520                break;
 521          }
 522
 523          Pos = VF.Offset + VF.Size;
 524       }
 525
 526       fflush(stdout);
 527       if (_error->PendingError() == true)
 528          break;
 529    }
 530
 531    delete [] Buffer;
 532    delete [] VFList;
 533    return !_error->PendingError();
 534 }
 535                                                                         /*}}}*/
 536 // Depends - Print out a dependency tree                                /*{{{*/
 537 // ---------------------------------------------------------------------
 538 /* */
 539 bool Depends(CommandLine &CmdL)
 540 {
 541    pkgCache &Cache = *GCache;
 542    SPtrArray<unsigned> Colours = new unsigned[Cache.Head().PackageCount];
 543    memset(Colours,0,sizeof(*Colours)*Cache.Head().PackageCount);
 544
 545    for (const char **I = CmdL.FileList + 1; *I != 0; I++)
 546    {
 547       pkgCache::PkgIterator Pkg = Cache.FindPkg(*I);
 548       if (Pkg.end() == true)
 549       {
 550          _error->Warning(_("Unable to locate package %s"),*I);
 551          continue;
 552       }
 553       Colours[Pkg->ID] = 1;
 554    }
 555
 556    bool Recurse = _config->FindB("APT::Cache::RecurseDepends",false);
 557    bool Installed = _config->FindB("APT::Cache::Installed",false);
 558    bool Important = _config->FindB("APT::Cache::Important",false);
 559    bool DidSomething;
 560    do
 561    {
 562       DidSomething = false;
 563       for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; Pkg++)
 564       {
 565          if (Colours[Pkg->ID] != 1)
 566             continue;
 567          Colours[Pkg->ID] = 2;
 568          DidSomething = true;
 569
 570          pkgCache::VerIterator Ver = Pkg.VersionList();
 571          if (Ver.end() == true)
 572          {
 573             cout << '<' << Pkg.Name() << '>' << endl;
 574             continue;
 575          }
 576
 577          cout << Pkg.Name() << endl;
 578
 579          for (pkgCache::DepIterator D = Ver.DependsList(); D.end() == false; D++)
 580          {
 581             // Important deps only
 582             if (Important == true)
 583                if (D->Type != pkgCache::Dep::PreDepends &&
 584                    D->Type != pkgCache::Dep::Depends)
 585                   continue;
 586
 587             pkgCache::PkgIterator Trg = D.TargetPkg();
 588
 589             if((Installed && Trg->CurrentVer != 0) || !Installed)
 590               {
 591
 592                 if ((D->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or)
 593                   cout << " |";
 594                 else
 595                   cout << "  ";
 596
 597                 // Show the package
 598                 if (Trg->VersionList == 0)
 599                   cout << D.DepType() << ": <" << Trg.Name() << ">" << endl;
 600                 else
 601                   cout << D.DepType() << ": " << Trg.Name() << endl;
 602
 603                 if (Recurse == true)
 604                   Colours[D.TargetPkg()->ID]++;
 605
 606               }
 607
 608             // Display all solutions
 609             SPtrArray<pkgCache::Version *> List = D.AllTargets();
 610             pkgPrioSortList(Cache,List);
 611             for (pkgCache::Version **I = List; *I != 0; I++)
 612             {
 613                pkgCache::VerIterator V(Cache,*I);
 614                if (V != Cache.VerP + V.ParentPkg()->VersionList ||
 615                    V->ParentPkg == D->Package)
 616                   continue;
 617                cout << "    " << V.ParentPkg().Name() << endl;
 618
 619                if (Recurse == true)
 620                   Colours[D.ParentPkg()->ID]++;
 621             }
 622          }
 623       }
 624    }
 625    while (DidSomething == true);
 626
 627    return true;
 628 }
 629                                                                         /*}}}*/
 630 // RDepends - Print out a reverse dependency tree - mbc                 /*{{{*/
 631 // ---------------------------------------------------------------------
 632 /* */
 633 bool RDepends(CommandLine &CmdL)
 634 {
 635    pkgCache &Cache = *GCache;
 636    SPtrArray<unsigned> Colours = new unsigned[Cache.Head().PackageCount];
 637    memset(Colours,0,sizeof(*Colours)*Cache.Head().PackageCount);
 638
 639    for (const char **I = CmdL.FileList + 1; *I != 0; I++)
 640    {
 641       pkgCache::PkgIterator Pkg = Cache.FindPkg(*I);
 642       if (Pkg.end() == true)
 643       {
 644          _error->Warning(_("Unable to locate package %s"),*I);
 645          continue;
 646       }
 647       Colours[Pkg->ID] = 1;
 648    }
 649
 650    bool Recurse = _config->FindB("APT::Cache::RecurseDepends",false);
 651    bool Installed = _config->FindB("APT::Cache::Installed",false);
 652    bool DidSomething;
 653    do
 654    {
 655       DidSomething = false;
 656       for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; Pkg++)
 657       {
 658          if (Colours[Pkg->ID] != 1)
 659             continue;
 660          Colours[Pkg->ID] = 2;
 661          DidSomething = true;
 662
 663          pkgCache::VerIterator Ver = Pkg.VersionList();
 664          if (Ver.end() == true)
 665          {
 666             cout << '<' << Pkg.Name() << '>' << endl;
 667             continue;
 668          }
 669
 670          cout << Pkg.Name() << endl;
 671
 672          cout << "Reverse Depends:" << endl;
 673          for (pkgCache::DepIterator D = Pkg.RevDependsList(); D.end() == false; D++)
 674          {
 675             // Show the package
 676             pkgCache::PkgIterator Trg = D.ParentPkg();
 677
 678             if((Installed && Trg->CurrentVer != 0) || !Installed)
 679               {
 680
 681                 if ((D->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or)
 682                   cout << " |";
 683                 else
 684                   cout << "  ";
 685
 686                 if (Trg->VersionList == 0)
 687                   cout << D.DepType() << ": <" << Trg.Name() << ">" << endl;
 688                 else
 689                   cout << Trg.Name() << endl;
 690
 691                 if (Recurse == true)
 692                   Colours[D.ParentPkg()->ID]++;
 693
 694               }
 695
 696             // Display all solutions
 697             SPtrArray<pkgCache::Version *> List = D.AllTargets();
 698             pkgPrioSortList(Cache,List);
 699             for (pkgCache::Version **I = List; *I != 0; I++)
 700             {
 701                pkgCache::VerIterator V(Cache,*I);
 702                if (V != Cache.VerP + V.ParentPkg()->VersionList ||
 703                    V->ParentPkg == D->Package)
 704                   continue;
 705                cout << "    " << V.ParentPkg().Name() << endl;
 706
 707                if (Recurse == true)
 708                   Colours[D.ParentPkg()->ID]++;
 709             }
 710          }
 711       }
 712    }
 713    while (DidSomething == true);
 714
 715    return true;
 716 }
 717                                                                         /*}}}*/
 718 // xvcg - Generate a graph for xvcg                                     /*{{{*/
 719 // ---------------------------------------------------------------------
 720 // Code contributed from Junichi Uekawa <dancer@debian.org> on 20 June 2002.
 721
 722 bool XVcg(CommandLine &CmdL)
 723 {
 724    pkgCache &Cache = *GCache;
 725    bool GivenOnly = _config->FindB("APT::Cache::GivenOnly",false);
 726
 727    /* Normal packages are boxes
 728       Pure Provides are triangles
 729       Mixed are diamonds
 730       rhomb are missing packages*/
 731    const char *Shapes[] = {"ellipse","triangle","box","rhomb"};
 732
 733    /* Initialize the list of packages to show.
 734       1 = To Show
 735       2 = To Show no recurse
 736       3 = Emitted no recurse
 737       4 = Emitted
 738       0 = None */
 739    enum States {None=0, ToShow, ToShowNR, DoneNR, Done};
 740    enum TheFlags {ForceNR=(1<<0)};
 741    unsigned char *Show = new unsigned char[Cache.Head().PackageCount];
 742    unsigned char *Flags = new unsigned char[Cache.Head().PackageCount];
 743    unsigned char *ShapeMap = new unsigned char[Cache.Head().PackageCount];
 744
 745    // Show everything if no arguments given
 746    if (CmdL.FileList[1] == 0)
 747       for (unsigned long I = 0; I != Cache.Head().PackageCount; I++)
 748          Show[I] = ToShow;
 749    else
 750       for (unsigned long I = 0; I != Cache.Head().PackageCount; I++)
 751          Show[I] = None;
 752    memset(Flags,0,sizeof(*Flags)*Cache.Head().PackageCount);
 753
 754    // Map the shapes
 755    for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; Pkg++)
 756    {
 757       if (Pkg->VersionList == 0)
 758       {
 759          // Missing
 760          if (Pkg->ProvidesList == 0)
 761             ShapeMap[Pkg->ID] = 0;
 762          else
 763             ShapeMap[Pkg->ID] = 1;
 764       }
 765       else
 766       {
 767          // Normal
 768          if (Pkg->ProvidesList == 0)
 769             ShapeMap[Pkg->ID] = 2;
 770          else
 771             ShapeMap[Pkg->ID] = 3;
 772       }
 773    }
 774
 775    // Load the list of packages from the command line into the show list
 776    for (const char **I = CmdL.FileList + 1; *I != 0; I++)
 777    {
 778       // Process per-package flags
 779       string P = *I;
 780       bool Force = false;
 781       if (P.length() > 3)
 782       {
 783          if (P.end()[-1] == '^')
 784          {
 785             Force = true;
 786             P.erase(P.end()-1);
 787          }
 788
 789          if (P.end()[-1] == ',')
 790             P.erase(P.end()-1);
 791       }
 792
 793       // Locate the package
 794       pkgCache::PkgIterator Pkg = Cache.FindPkg(P);
 795       if (Pkg.end() == true)
 796       {
 797          _error->Warning(_("Unable to locate package %s"),*I);
 798          continue;
 799       }
 800       Show[Pkg->ID] = ToShow;
 801
 802       if (Force == true)
 803          Flags[Pkg->ID] |= ForceNR;
 804    }
 805
 806    // Little header
 807    cout << "graph: { title: \"packages\"" << endl <<
 808      "xmax: 700 ymax: 700 x: 30 y: 30" << endl <<
 809      "layout_downfactor: 8" << endl;
 810
 811    bool Act = true;
 812    while (Act == true)
 813    {
 814       Act = false;
 815       for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; Pkg++)
 816       {
 817          // See we need to show this package
 818          if (Show[Pkg->ID] == None || Show[Pkg->ID] >= DoneNR)
 819             continue;
 820
 821          //printf ("node: { title: \"%s\" label: \"%s\" }\n", Pkg.Name(), Pkg.Name());
 822
 823          // Colour as done
 824          if (Show[Pkg->ID] == ToShowNR || (Flags[Pkg->ID] & ForceNR) == ForceNR)
 825          {
 826             // Pure Provides and missing packages have no deps!
 827             if (ShapeMap[Pkg->ID] == 0 || ShapeMap[Pkg->ID] == 1)
 828                Show[Pkg->ID] = Done;
 829             else
 830                Show[Pkg->ID] = DoneNR;
 831          }
 832          else
 833             Show[Pkg->ID] = Done;
 834          Act = true;
 835
 836          // No deps to map out
 837          if (Pkg->VersionList == 0 || Show[Pkg->ID] == DoneNR)
 838             continue;
 839
 840          pkgCache::VerIterator Ver = Pkg.VersionList();
 841          for (pkgCache::DepIterator D = Ver.DependsList(); D.end() == false; D++)
 842          {
 843             // See if anything can meet this dep
 844             // Walk along the actual package providing versions
 845             bool Hit = false;
 846             pkgCache::PkgIterator DPkg = D.TargetPkg();
 847             for (pkgCache::VerIterator I = DPkg.VersionList();
 848                       I.end() == false && Hit == false; I++)
 849             {
 850                if (Cache.VS->CheckDep(I.VerStr(),D->CompareOp,D.TargetVer()) == true)
 851                   Hit = true;
 852             }
 853
 854             // Follow all provides
 855             for (pkgCache::PrvIterator I = DPkg.ProvidesList();
 856                       I.end() == false && Hit == false; I++)
 857             {
 858                if (Cache.VS->CheckDep(I.ProvideVersion(),D->CompareOp,D.TargetVer()) == false)
 859                   Hit = true;
 860             }
 861
 862
 863             // Only graph critical deps
 864             if (D.IsCritical() == true)
 865             {
 866                printf ("edge: { sourcename: \"%s\" targetname: \"%s\" class: 2 ",Pkg.Name(), D.TargetPkg().Name() );
 867
 868                // Colour the node for recursion
 869                if (Show[D.TargetPkg()->ID] <= DoneNR)
 870                {
 871                   /* If a conflicts does not meet anything in the database
 872                      then show the relation but do not recurse */
 873                   if (Hit == false &&
 874                       (D->Type == pkgCache::Dep::Conflicts ||
 875                        D->Type == pkgCache::Dep::DpkgBreaks ||
 876                        D->Type == pkgCache::Dep::Obsoletes))
 877                   {
 878                      if (Show[D.TargetPkg()->ID] == None &&
 879                          Show[D.TargetPkg()->ID] != ToShow)
 880                         Show[D.TargetPkg()->ID] = ToShowNR;
 881                   }
 882                   else
 883                   {
 884                      if (GivenOnly == true && Show[D.TargetPkg()->ID] != ToShow)
 885                         Show[D.TargetPkg()->ID] = ToShowNR;
 886                      else
 887                         Show[D.TargetPkg()->ID] = ToShow;
 888                   }
 889                }
 890
 891                // Edge colour
 892                switch(D->Type)
 893                {
 894                   case pkgCache::Dep::Conflicts:
 895                     printf("label: \"conflicts\" color: lightgreen }\n");
 896                     break;
 897                   case pkgCache::Dep::DpkgBreaks:
 898                     printf("label: \"breaks\" color: lightgreen }\n");
 899                     break;
 900                   case pkgCache::Dep::Obsoletes:
 901                     printf("label: \"obsoletes\" color: lightgreen }\n");
 902                     break;
 903
 904                   case pkgCache::Dep::PreDepends:
 905                     printf("label: \"predepends\" color: blue }\n");
 906                     break;
 907
 908                   default:
 909                     printf("}\n");
 910                   break;
 911                }
 912             }
 913          }
 914       }
 915    }
 916
 917    /* Draw the box colours after the fact since we can not tell what colour
 918       they should be until everything is finished drawing */
 919    for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; Pkg++)
 920    {
 921       if (Show[Pkg->ID] < DoneNR)
 922          continue;
 923
 924       if (Show[Pkg->ID] == DoneNR)
 925          printf("node: { title: \"%s\" label: \"%s\" color: orange shape: %s }\n", Pkg.Name(), Pkg.Name(),
 926                 Shapes[ShapeMap[Pkg->ID]]);
 927       else
 928         printf("node: { title: \"%s\" label: \"%s\" shape: %s }\n", Pkg.Name(), Pkg.Name(),
 929                 Shapes[ShapeMap[Pkg->ID]]);
 930
 931    }
 932
 933    printf("}\n");
 934    return true;
 935 }
 936                                                                         /*}}}*/
 937 // Dotty - Generate a graph for Dotty                                   /*{{{*/
 938 // ---------------------------------------------------------------------
 939 /* Dotty is the graphvis program for generating graphs. It is a fairly
 940    simple queuing algorithm that just writes dependencies and nodes.
 941    http://www.research.att.com/sw/tools/graphviz/ */
 942 bool Dotty(CommandLine &CmdL)
 943 {
 944    pkgCache &Cache = *GCache;
 945    bool GivenOnly = _config->FindB("APT::Cache::GivenOnly",false);
 946
 947    /* Normal packages are boxes
 948       Pure Provides are triangles
 949       Mixed are diamonds
 950       Hexagons are missing packages*/
 951    const char *Shapes[] = {"hexagon","triangle","box","diamond"};
 952
 953    /* Initialize the list of packages to show.
 954       1 = To Show
 955       2 = To Show no recurse
 956       3 = Emitted no recurse
 957       4 = Emitted
 958       0 = None */
 959    enum States {None=0, ToShow, ToShowNR, DoneNR, Done};
 960    enum TheFlags {ForceNR=(1<<0)};
 961    unsigned char *Show = new unsigned char[Cache.Head().PackageCount];
 962    unsigned char *Flags = new unsigned char[Cache.Head().PackageCount];
 963    unsigned char *ShapeMap = new unsigned char[Cache.Head().PackageCount];
 964
 965    // Show everything if no arguments given
 966    if (CmdL.FileList[1] == 0)
 967       for (unsigned long I = 0; I != Cache.Head().PackageCount; I++)
 968          Show[I] = ToShow;
 969    else
 970       for (unsigned long I = 0; I != Cache.Head().PackageCount; I++)
 971          Show[I] = None;
 972    memset(Flags,0,sizeof(*Flags)*Cache.Head().PackageCount);
 973
 974    // Map the shapes
 975    for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; Pkg++)
 976    {
 977       if (Pkg->VersionList == 0)
 978       {
 979          // Missing
 980          if (Pkg->ProvidesList == 0)
 981             ShapeMap[Pkg->ID] = 0;
 982          else
 983             ShapeMap[Pkg->ID] = 1;
 984       }
 985       else
 986       {
 987          // Normal
 988          if (Pkg->ProvidesList == 0)
 989             ShapeMap[Pkg->ID] = 2;
 990          else
 991             ShapeMap[Pkg->ID] = 3;
 992       }
 993    }
 994
 995    // Load the list of packages from the command line into the show list
 996    for (const char **I = CmdL.FileList + 1; *I != 0; I++)
 997    {
 998       // Process per-package flags
 999       string P = *I;
1000       bool Force = false;
1001       if (P.length() > 3)
1002       {
1003          if (P.end()[-1] == '^')
1004          {
1005             Force = true;
1006             P.erase(P.end()-1);
1007          }
1008
1009          if (P.end()[-1] == ',')
1010             P.erase(P.end()-1);
1011       }
1012
1013       // Locate the package
1014       pkgCache::PkgIterator Pkg = Cache.FindPkg(P);
1015       if (Pkg.end() == true)
1016       {
1017          _error->Warning(_("Unable to locate package %s"),*I);
1018          continue;
1019       }
1020       Show[Pkg->ID] = ToShow;
1021
1022       if (Force == true)
1023          Flags[Pkg->ID] |= ForceNR;
1024    }
1025
1026    // Little header
1027    printf("digraph packages {\n");
1028    printf("concentrate=true;\n");
1029    printf("size=\"30,40\";\n");
1030
1031    bool Act = true;
1032    while (Act == true)
1033    {
1034       Act = false;
1035       for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; Pkg++)
1036       {
1037          // See we need to show this package
1038          if (Show[Pkg->ID] == None || Show[Pkg->ID] >= DoneNR)
1039             continue;
1040
1041          // Colour as done
1042          if (Show[Pkg->ID] == ToShowNR || (Flags[Pkg->ID] & ForceNR) == ForceNR)
1043          {
1044             // Pure Provides and missing packages have no deps!
1045             if (ShapeMap[Pkg->ID] == 0 || ShapeMap[Pkg->ID] == 1)
1046                Show[Pkg->ID] = Done;
1047             else
1048                Show[Pkg->ID] = DoneNR;
1049          }
1050          else
1051             Show[Pkg->ID] = Done;
1052          Act = true;
1053
1054          // No deps to map out
1055          if (Pkg->VersionList == 0 || Show[Pkg->ID] == DoneNR)
1056             continue;
1057
1058          pkgCache::VerIterator Ver = Pkg.VersionList();
1059          for (pkgCache::DepIterator D = Ver.DependsList(); D.end() == false; D++)
1060          {
1061             // See if anything can meet this dep
1062             // Walk along the actual package providing versions
1063             bool Hit = false;
1064             pkgCache::PkgIterator DPkg = D.TargetPkg();
1065             for (pkgCache::VerIterator I = DPkg.VersionList();
1066                       I.end() == false && Hit == false; I++)
1067             {
1068                if (Cache.VS->CheckDep(I.VerStr(),D->CompareOp,D.TargetVer()) == true)
1069                   Hit = true;
1070             }
1071
1072             // Follow all provides
1073             for (pkgCache::PrvIterator I = DPkg.ProvidesList();
1074                       I.end() == false && Hit == false; I++)
1075             {
1076                if (Cache.VS->CheckDep(I.ProvideVersion(),D->CompareOp,D.TargetVer()) == false)
1077                   Hit = true;
1078             }
1079
1080             // Only graph critical deps
1081             if (D.IsCritical() == true)
1082             {
1083                printf("\"%s\" -> \"%s\"",Pkg.Name(),D.TargetPkg().Name());
1084
1085                // Colour the node for recursion
1086                if (Show[D.TargetPkg()->ID] <= DoneNR)
1087                {
1088                   /* If a conflicts does not meet anything in the database
1089                      then show the relation but do not recurse */
1090                   if (Hit == false &&
1091                       (D->Type == pkgCache::Dep::Conflicts ||
1092                        D->Type == pkgCache::Dep::Obsoletes))
1093                   {
1094                      if (Show[D.TargetPkg()->ID] == None &&
1095                          Show[D.TargetPkg()->ID] != ToShow)
1096                         Show[D.TargetPkg()->ID] = ToShowNR;
1097                   }
1098                   else
1099                   {
1100                      if (GivenOnly == true && Show[D.TargetPkg()->ID] != ToShow)
1101                         Show[D.TargetPkg()->ID] = ToShowNR;
1102                      else
1103                         Show[D.TargetPkg()->ID] = ToShow;
1104                   }
1105                }
1106
1107                // Edge colour
1108                switch(D->Type)
1109                {
1110                   case pkgCache::Dep::Conflicts:
1111                   case pkgCache::Dep::Obsoletes:
1112                   printf("[color=springgreen];\n");
1113                   break;
1114
1115                   case pkgCache::Dep::PreDepends:
1116                   printf("[color=blue];\n");
1117                   break;
1118
1119                   default:
1120                   printf(";\n");
1121                   break;
1122                }
1123             }
1124          }
1125       }
1126    }
1127
1128    /* Draw the box colours after the fact since we can not tell what colour
1129       they should be until everything is finished drawing */
1130    for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; Pkg++)
1131    {
1132       if (Show[Pkg->ID] < DoneNR)
1133          continue;
1134
1135       // Orange box for early recursion stoppage
1136       if (Show[Pkg->ID] == DoneNR)
1137          printf("\"%s\" [color=orange,shape=%s];\n",Pkg.Name(),
1138                 Shapes[ShapeMap[Pkg->ID]]);
1139       else
1140          printf("\"%s\" [shape=%s];\n",Pkg.Name(),
1141                 Shapes[ShapeMap[Pkg->ID]]);
1142    }
1143
1144    printf("}\n");
1145    return true;
1146 }
1147                                                                         /*}}}*/
1148 // DoAdd - Perform an adding operation                                  /*{{{*/
1149 // ---------------------------------------------------------------------
1150 /* */
1151 bool DoAdd(CommandLine &CmdL)
1152 {
1153    return _error->Error("Unimplemented");
1154 #if 0
1155    // Make sure there is at least one argument
1156    if (CmdL.FileSize() <= 1)
1157       return _error->Error("You must give at least one file name");
1158
1159    // Open the cache
1160    FileFd CacheF(_config->FindFile("Dir::Cache::pkgcache"),FileFd::WriteAny);
1161    if (_error->PendingError() == true)
1162       return false;
1163
1164    DynamicMMap Map(CacheF,MMap::Public);
1165    if (_error->PendingError() == true)
1166       return false;
1167
1168    OpTextProgress Progress(*_config);
1169    pkgCacheGenerator Gen(Map,Progress);
1170    if (_error->PendingError() == true)
1171       return false;
1172
1173    unsigned long Length = CmdL.FileSize() - 1;
1174    for (const char **I = CmdL.FileList + 1; *I != 0; I++)
1175    {
1176       Progress.OverallProgress(I - CmdL.FileList,Length,1,"Generating cache");
1177       Progress.SubProgress(Length);
1178
1179       // Do the merge
1180       FileFd TagF(*I,FileFd::ReadOnly);
1181       debListParser Parser(TagF);
1182       if (_error->PendingError() == true)
1183          return _error->Error("Problem opening %s",*I);
1184
1185       if (Gen.SelectFile(*I,"") == false)
1186          return _error->Error("Problem with SelectFile");
1187
1188       if (Gen.MergeList(Parser) == false)
1189          return _error->Error("Problem with MergeList");
1190    }
1191
1192    Progress.Done();
1193    GCache = &Gen.GetCache();
1194    Stats(CmdL);
1195
1196    return true;
1197 #endif
1198 }
1199                                                                         /*}}}*/
1200 // DisplayRecord - Displays the complete record for the package         /*{{{*/
1201 // ---------------------------------------------------------------------
1202 /* This displays the package record from the proper package index file.
1203    It is not used by DumpAvail for performance reasons. */
1204 bool DisplayRecord(pkgCache::VerIterator V)
1205 {
1206    // Find an appropriate file
1207    pkgCache::VerFileIterator Vf = V.FileList();
1208    for (; Vf.end() == false; Vf++)
1209       if ((Vf.File()->Flags & pkgCache::Flag::NotSource) == 0)
1210          break;
1211    if (Vf.end() == true)
1212       Vf = V.FileList();
1213
1214    // Check and load the package list file
1215    pkgCache::PkgFileIterator I = Vf.File();
1216    if (I.IsOk() == false)
1217       return _error->Error(_("Package file %s is out of sync."),I.FileName());
1218
1219    FileFd PkgF(I.FileName(),FileFd::ReadOnly);
1220    if (_error->PendingError() == true)
1221       return false;
1222
1223    // Read the record
1224    unsigned char *Buffer = new unsigned char[GCache->HeaderP->MaxVerFileSize+1];
1225    Buffer[V.FileList()->Size] = '\n';
1226    if (PkgF.Seek(V.FileList()->Offset) == false ||
1227        PkgF.Read(Buffer,V.FileList()->Size) == false)
1228    {
1229       delete [] Buffer;
1230       return false;
1231    }
1232
1233    // Get a pointer to start of Description field
1234    const unsigned char *DescP = (unsigned char*)strstr((char*)Buffer, "Description:");
1235
1236    // Write all but Description
1237    if (fwrite(Buffer,1,DescP - Buffer,stdout) < (size_t)(DescP - Buffer))
1238    {
1239       delete [] Buffer;
1240       return false;
1241    }
1242
1243    // Show the right description
1244    pkgRecords Recs(*GCache);
1245    pkgCache::DescIterator Desc = V.TranslatedDescription();
1246    pkgRecords::Parser &P = Recs.Lookup(Desc.FileList());
1247    cout << "Description" << ( (strcmp(Desc.LanguageCode(),"") != 0) ? "-" : "" ) << Desc.LanguageCode() << ": " << P.LongDesc();
1248
1249    // Find the first field after the description (if there is any)
1250    for(DescP++;DescP != &Buffer[V.FileList()->Size];DescP++)
1251    {
1252       if(*DescP == '\n' && *(DescP+1) != ' ')
1253       {
1254          // write the rest of the buffer
1255          const unsigned char *end=&Buffer[V.FileList()->Size];
1256          if (fwrite(DescP,1,end-DescP,stdout) < (size_t)(end-DescP))
1257          {
1258             delete [] Buffer;
1259             return false;
1260          }
1261
1262          break;
1263       }
1264    }
1265    // write a final newline (after the description)
1266    cout<<endl;
1267    delete [] Buffer;
1268
1269    return true;
1270 }
1271                                                                         /*}}}*/
1272
1273 struct ExDescFile
1274 {
1275    pkgCache::DescFile *Df;
1276    bool NameMatch;
1277 };
1278
1279 // Search - Perform a search                                            /*{{{*/
1280 // ---------------------------------------------------------------------
1281 /* This searches the package names and package descriptions for a pattern */
1282 bool Search(CommandLine &CmdL)
1283 {
1284    pkgCache &Cache = *GCache;
1285    bool ShowFull = _config->FindB("APT::Cache::ShowFull",false);
1286    bool NamesOnly = _config->FindB("APT::Cache::NamesOnly",false);
1287    unsigned NumPatterns = CmdL.FileSize() -1;
1288
1289    pkgDepCache::Policy Plcy;
1290
1291    // Make sure there is at least one argument
1292    if (NumPatterns < 1)
1293       return _error->Error(_("You must give exactly one pattern"));
1294
1295    // Compile the regex pattern
1296    regex_t *Patterns = new regex_t[NumPatterns];
1297    memset(Patterns,0,sizeof(*Patterns)*NumPatterns);
1298    for (unsigned I = 0; I != NumPatterns; I++)
1299    {
1300       if (regcomp(&Patterns[I],CmdL.FileList[I+1],REG_EXTENDED | REG_ICASE |
1301                   REG_NOSUB) != 0)
1302       {
1303          for (; I != 0; I--)
1304             regfree(&Patterns[I]);
1305          return _error->Error("Regex compilation error");
1306       }
1307    }
1308
1309    // Create the text record parser
1310    pkgRecords Recs(Cache);
1311    if (_error->PendingError() == true)
1312    {
1313       for (unsigned I = 0; I != NumPatterns; I++)
1314          regfree(&Patterns[I]);
1315       return false;
1316    }
1317
1318    ExDescFile *DFList = new ExDescFile[Cache.HeaderP->PackageCount+1];
1319    memset(DFList,0,sizeof(*DFList)*Cache.HeaderP->PackageCount+1);
1320
1321    // Map versions that we want to write out onto the VerList array.
1322    for (pkgCache::PkgIterator P = Cache.PkgBegin(); P.end() == false; P++)
1323    {
1324       DFList[P->ID].NameMatch = NumPatterns != 0;
1325       for (unsigned I = 0; I != NumPatterns; I++)
1326       {
1327          if (regexec(&Patterns[I],P.Name(),0,0,0) == 0)
1328             DFList[P->ID].NameMatch &= true;
1329          else
1330             DFList[P->ID].NameMatch = false;
1331       }
1332
1333       // Doing names only, drop any that dont match..
1334       if (NamesOnly == true && DFList[P->ID].NameMatch == false)
1335          continue;
1336
1337       // Find the proper version to use.
1338       pkgCache::VerIterator V = Plcy.GetCandidateVer(P);
1339       if (V.end() == false)
1340          DFList[P->ID].Df = V.DescriptionList().FileList();
1341    }
1342
1343    // Include all the packages that provide matching names too
1344    for (pkgCache::PkgIterator P = Cache.PkgBegin(); P.end() == false; P++)
1345    {
1346       if (DFList[P->ID].NameMatch == false)
1347          continue;
1348
1349       for (pkgCache::PrvIterator Prv = P.ProvidesList() ; Prv.end() == false; Prv++)
1350       {
1351          pkgCache::VerIterator V = Plcy.GetCandidateVer(Prv.OwnerPkg());
1352          if (V.end() == false)
1353          {
1354             DFList[Prv.OwnerPkg()->ID].Df = V.DescriptionList().FileList();
1355             DFList[Prv.OwnerPkg()->ID].NameMatch = true;
1356          }
1357       }
1358    }
1359
1360    LocalitySort(&DFList->Df,Cache.HeaderP->PackageCount,sizeof(*DFList));
1361
1362    // Iterate over all the version records and check them
1363    for (ExDescFile *J = DFList; J->Df != 0; J++)
1364    {
1365       pkgRecords::Parser &P = Recs.Lookup(pkgCache::DescFileIterator(Cache,J->Df));
1366
1367       bool Match = true;
1368       if (J->NameMatch == false)
1369       {
1370          string LongDesc = P.LongDesc();
1371          Match = NumPatterns != 0;
1372          for (unsigned I = 0; I != NumPatterns; I++)
1373          {
1374             if (regexec(&Patterns[I],LongDesc.c_str(),0,0,0) == 0)
1375                Match &= true;
1376             else
1377                Match = false;
1378          }
1379       }
1380
1381       if (Match == true)
1382       {
1383          if (ShowFull == true)
1384          {
1385             const char *Start;
1386             const char *End;
1387             P.GetRec(Start,End);
1388             fwrite(Start,End-Start,1,stdout);
1389             putc('\n',stdout);
1390          }
1391          else
1392             printf("%s - %s\n",P.Name().c_str(),P.ShortDesc().c_str());
1393       }
1394    }
1395
1396    delete [] DFList;
1397    for (unsigned I = 0; I != NumPatterns; I++)
1398       regfree(&Patterns[I]);
1399    if (ferror(stdout))
1400        return _error->Error("Write to stdout failed");
1401    return true;
1402 }
1403                                                                         /*}}}*/
1404 // ShowPackage - Dump the package record to the screen                  /*{{{*/
1405 // ---------------------------------------------------------------------
1406 /* */
1407 bool ShowPackage(CommandLine &CmdL)
1408 {
1409    pkgCache &Cache = *GCache;
1410    pkgDepCache::Policy Plcy;
1411
1412    unsigned found = 0;
1413
1414    for (const char **I = CmdL.FileList + 1; *I != 0; I++)
1415    {
1416       pkgCache::PkgIterator Pkg = Cache.FindPkg(*I);
1417       if (Pkg.end() == true)
1418       {
1419          _error->Warning(_("Unable to locate package %s"),*I);
1420          continue;
1421       }
1422
1423       ++found;
1424
1425       // Find the proper version to use.
1426       if (_config->FindB("APT::Cache::AllVersions","true") == true)
1427       {
1428          pkgCache::VerIterator V;
1429          for (V = Pkg.VersionList(); V.end() == false; V++)
1430          {
1431             if (DisplayRecord(V) == false)
1432                return false;
1433          }
1434       }
1435       else
1436       {
1437          pkgCache::VerIterator V = Plcy.GetCandidateVer(Pkg);
1438          if (V.end() == true || V.FileList().end() == true)
1439             continue;
1440          if (DisplayRecord(V) == false)
1441             return false;
1442       }
1443    }
1444
1445    if (found > 0)
1446         return true;
1447    return _error->Error(_("No packages found"));
1448 }
1449                                                                         /*}}}*/
1450 // ShowPkgNames - Show package names                                    /*{{{*/
1451 // ---------------------------------------------------------------------
1452 /* This does a prefix match on the first argument */
1453 bool ShowPkgNames(CommandLine &CmdL)
1454 {
1455    pkgCache &Cache = *GCache;
1456    pkgCache::PkgIterator I = Cache.PkgBegin();
1457    bool All = _config->FindB("APT::Cache::AllNames","false");
1458
1459    if (CmdL.FileList[1] != 0)
1460    {
1461       for (;I.end() != true; I++)
1462       {
1463          if (All == false && I->VersionList == 0)
1464             continue;
1465
1466          if (strncmp(I.Name(),CmdL.FileList[1],strlen(CmdL.FileList[1])) == 0)
1467             cout << I.Name() << endl;
1468       }
1469
1470       return true;
1471    }
1472
1473    // Show all pkgs
1474    for (;I.end() != true; I++)
1475    {
1476       if (All == false && I->VersionList == 0)
1477          continue;
1478       cout << I.Name() << endl;
1479    }
1480
1481    return true;
1482 }
1483                                                                         /*}}}*/
1484 // ShowSrcPackage - Show source package records                         /*{{{*/
1485 // ---------------------------------------------------------------------
1486 /* */
1487 bool ShowSrcPackage(CommandLine &CmdL)
1488 {
1489    pkgSourceList List;
1490    List.ReadMainList();
1491
1492    // Create the text record parsers
1493    pkgSrcRecords SrcRecs(List);
1494    if (_error->PendingError() == true)
1495       return false;
1496
1497    for (const char **I = CmdL.FileList + 1; *I != 0; I++)
1498    {
1499       SrcRecs.Restart();
1500
1501       pkgSrcRecords::Parser *Parse;
1502       while ((Parse = SrcRecs.Find(*I,false)) != 0)
1503          cout << Parse->AsStr() << endl;;
1504    }
1505    return true;
1506 }
1507                                                                         /*}}}*/
1508 // Policy - Show the results of the preferences file                    /*{{{*/
1509 // ---------------------------------------------------------------------
1510 /* */
1511 bool Policy(CommandLine &CmdL)
1512 {
1513    if (SrcList == 0)
1514       return _error->Error("Generate must be enabled for this function");
1515
1516    pkgCache &Cache = *GCache;
1517    pkgPolicy Plcy(&Cache);
1518    if (ReadPinFile(Plcy) == false || ReadPinDir(Plcy) == false)
1519       return false;
1520
1521    // Print out all of the package files
1522    if (CmdL.FileList[1] == 0)
1523    {
1524       cout << _("Package files:") << endl;
1525       for (pkgCache::PkgFileIterator F = Cache.FileBegin(); F.end() == false; F++)
1526       {
1527          // Locate the associated index files so we can derive a description
1528          pkgIndexFile *Indx;
1529          if (SrcList->FindIndex(F,Indx) == false &&
1530              _system->FindIndex(F,Indx) == false)
1531             return _error->Error(_("Cache is out of sync, can't x-ref a package file"));
1532
1533          printf("%4i %s\n",
1534                 Plcy.GetPriority(F),Indx->Describe(true).c_str());
1535
1536          // Print the reference information for the package
1537          string Str = F.RelStr();
1538          if (Str.empty() == false)
1539             printf("     release %s\n",F.RelStr().c_str());
1540          if (F.Site() != 0 && F.Site()[0] != 0)
1541             printf("     origin %s\n",F.Site());
1542       }
1543
1544       // Show any packages have explicit pins
1545       cout << _("Pinned packages:") << endl;
1546       pkgCache::PkgIterator I = Cache.PkgBegin();
1547       for (;I.end() != true; I++)
1548       {
1549          if (Plcy.GetPriority(I) == 0)
1550             continue;
1551
1552          // Print the package name and the version we are forcing to
1553          cout << "     " << I.Name() << " -> ";
1554
1555          pkgCache::VerIterator V = Plcy.GetMatch(I);
1556          if (V.end() == true)
1557             cout << _("(not found)") << endl;
1558          else
1559             cout << V.VerStr() << endl;
1560       }
1561
1562       return true;
1563    }
1564
1565    // Print out detailed information for each package
1566    for (const char **I = CmdL.FileList + 1; *I != 0; I++)
1567    {
1568       pkgCache::PkgIterator Pkg = Cache.FindPkg(*I);
1569       if (Pkg.end() == true)
1570       {
1571          _error->Warning(_("Unable to locate package %s"),*I);
1572          continue;
1573       }
1574
1575       cout << Pkg.Name() << ":" << endl;
1576
1577       // Installed version
1578       cout << _("  Installed: ");
1579       if (Pkg->CurrentVer == 0)
1580          cout << _("(none)") << endl;
1581       else
1582          cout << Pkg.CurrentVer().VerStr() << endl;
1583
1584       // Candidate Version
1585       cout << _("  Candidate: ");
1586       pkgCache::VerIterator V = Plcy.GetCandidateVer(Pkg);
1587       if (V.end() == true)
1588          cout << _("(none)") << endl;
1589       else
1590          cout << V.VerStr() << endl;
1591
1592       // Pinned version
1593       if (Plcy.GetPriority(Pkg) != 0)
1594       {
1595          cout << _("  Package pin: ");
1596          V = Plcy.GetMatch(Pkg);
1597          if (V.end() == true)
1598             cout << _("(not found)") << endl;
1599          else
1600             cout << V.VerStr() << endl;
1601       }
1602
1603       // Show the priority tables
1604       cout << _("  Version table:") << endl;
1605       for (V = Pkg.VersionList(); V.end() == false; V++)
1606       {
1607          if (Pkg.CurrentVer() == V)
1608             cout << " *** " << V.VerStr();
1609          else
1610             cout << "     " << V.VerStr();
1611          cout << " " << Plcy.GetPriority(Pkg) << endl;
1612          for (pkgCache::VerFileIterator VF = V.FileList(); VF.end() == false; VF++)
1613          {
1614             // Locate the associated index files so we can derive a description
1615             pkgIndexFile *Indx;
1616             if (SrcList->FindIndex(VF.File(),Indx) == false &&
1617                 _system->FindIndex(VF.File(),Indx) == false)
1618                return _error->Error(_("Cache is out of sync, can't x-ref a package file"));
1619             printf(_("       %4i %s\n"),Plcy.GetPriority(VF.File()),
1620                    Indx->Describe(true).c_str());
1621          }
1622       }
1623    }
1624
1625    return true;
1626 }
1627                                                                         /*}}}*/
1628 // Madison - Look a bit like katie's madison                            /*{{{*/
1629 // ---------------------------------------------------------------------
1630 /* */
1631 bool Madison(CommandLine &CmdL)
1632 {
1633    if (SrcList == 0)
1634       return _error->Error("Generate must be enabled for this function");
1635
1636    SrcList->ReadMainList();
1637
1638    pkgCache &Cache = *GCache;
1639
1640    // Create the src text record parsers and ignore errors about missing
1641    // deb-src lines that are generated from pkgSrcRecords::pkgSrcRecords
1642    pkgSrcRecords SrcRecs(*SrcList);
1643    if (_error->PendingError() == true)
1644       _error->Discard();
1645
1646    for (const char **I = CmdL.FileList + 1; *I != 0; I++)
1647    {
1648       pkgCache::PkgIterator Pkg = Cache.FindPkg(*I);
1649
1650       if (Pkg.end() == false)
1651       {
1652          for (pkgCache::VerIterator V = Pkg.VersionList(); V.end() == false; V++)
1653          {
1654             for (pkgCache::VerFileIterator VF = V.FileList(); VF.end() == false; VF++)
1655             {
1656 // This might be nice, but wouldn't uniquely identify the source -mdz
1657 //                if (VF.File().Archive() != 0)
1658 //                {
1659 //                   cout << setw(10) << Pkg.Name() << " | " << setw(10) << V.VerStr() << " | "
1660 //                        << VF.File().Archive() << endl;
1661 //                }
1662
1663                // Locate the associated index files so we can derive a description
1664                for (pkgSourceList::const_iterator S = SrcList->begin(); S != SrcList->end(); S++)
1665                {
1666                     vector<pkgIndexFile *> *Indexes = (*S)->GetIndexFiles();
1667                     for (vector<pkgIndexFile *>::const_iterator IF = Indexes->begin();
1668                          IF != Indexes->end(); IF++)
1669                     {
1670                          if ((*IF)->FindInCache(*(VF.File().Cache())) == VF.File())
1671                          {
1672                                    cout << setw(10) << Pkg.Name() << " | " << setw(10) << V.VerStr() << " | "
1673                                         << (*IF)->Describe(true) << endl;
1674                          }
1675                     }
1676                }
1677             }
1678          }
1679       }
1680
1681
1682       SrcRecs.Restart();
1683       pkgSrcRecords::Parser *SrcParser;
1684       while ((SrcParser = SrcRecs.Find(*I,false)) != 0)
1685       {
1686          // Maybe support Release info here too eventually
1687          cout << setw(10) << SrcParser->Package() << " | "
1688               << setw(10) << SrcParser->Version() << " | "
1689               << SrcParser->Index().Describe(true) << endl;
1690       }
1691    }
1692
1693    return true;
1694 }
1695                                                                         /*}}}*/
1696 // GenCaches - Call the main cache generator                            /*{{{*/
1697 // ---------------------------------------------------------------------
1698 /* */
1699 bool GenCaches(CommandLine &Cmd)
1700 {
1701    OpTextProgress Progress(*_config);
1702
1703    pkgSourceList List;
1704    if (List.ReadMainList() == false)
1705       return false;
1706    return pkgMakeStatusCache(List,Progress);
1707 }
1708                                                                         /*}}}*/
1709 // ShowHelp - Show a help screen                                        /*{{{*/
1710 // ---------------------------------------------------------------------
1711 /* */
1712 bool ShowHelp(CommandLine &Cmd)
1713 {
1714    ioprintf(cout,_("%s %s for %s compiled on %s %s\n"),PACKAGE,VERSION,
1715             COMMON_ARCH,__DATE__,__TIME__);
1716
1717    if (_config->FindB("version") == true)
1718      return true;
1719
1720    cout <<
1721     _("Usage: apt-cache [options] command\n"
1722       "       apt-cache [options] add file1 [file2 ...]\n"
1723       "       apt-cache [options] showpkg pkg1 [pkg2 ...]\n"
1724       "       apt-cache [options] showsrc pkg1 [pkg2 ...]\n"
1725       "\n"
1726       "apt-cache is a low-level tool used to manipulate APT's binary\n"
1727       "cache files, and query information from them\n"
1728       "\n"
1729       "Commands:\n"
1730       "   add - Add a package file to the source cache\n"
1731       "   gencaches - Build both the package and source cache\n"
1732       "   showpkg - Show some general information for a single package\n"
1733       "   showsrc - Show source records\n"
1734       "   stats - Show some basic statistics\n"
1735       "   dump - Show the entire file in a terse form\n"
1736       "   dumpavail - Print an available file to stdout\n"
1737       "   unmet - Show unmet dependencies\n"
1738       "   search - Search the package list for a regex pattern\n"
1739       "   show - Show a readable record for the package\n"
1740       "   depends - Show raw dependency information for a package\n"
1741       "   rdepends - Show reverse dependency information for a package\n"
1742       "   pkgnames - List the names of all packages in the system\n"
1743       "   dotty - Generate package graphs for GraphViz\n"
1744       "   xvcg - Generate package graphs for xvcg\n"
1745       "   policy - Show policy settings\n"
1746       "\n"
1747       "Options:\n"
1748       "  -h   This help text.\n"
1749       "  -p=? The package cache.\n"
1750       "  -s=? The source cache.\n"
1751       "  -q   Disable progress indicator.\n"
1752       "  -i   Show only important deps for the unmet command.\n"
1753       "  -c=? Read this configuration file\n"
1754       "  -o=? Set an arbitrary configuration option, eg -o dir::cache=/tmp\n"
1755       "See the apt-cache(8) and apt.conf(5) manual pages for more information.\n");
1756    return true;
1757 }
1758                                                                         /*}}}*/
1759 // CacheInitialize - Initialize things for apt-cache                    /*{{{*/
1760 // ---------------------------------------------------------------------
1761 /* */
1762 void CacheInitialize()
1763 {
1764    _config->Set("quiet",0);
1765    _config->Set("help",false);
1766 }
1767                                                                         /*}}}*/
1768 int main(int argc,const char *argv[])                                   /*{{{*/
1769 {
1770    CommandLine::Args Args[] = {
1771       {'h',"help","help",0},
1772       {'v',"version","version",0},
1773       {'p',"pkg-cache","Dir::Cache::pkgcache",CommandLine::HasArg},
1774       {'s',"src-cache","Dir::Cache::srcpkgcache",CommandLine::HasArg},
1775       {'q',"quiet","quiet",CommandLine::IntLevel},
1776       {'i',"important","APT::Cache::Important",0},
1777       {'f',"full","APT::Cache::ShowFull",0},
1778       {'g',"generate","APT::Cache::Generate",0},
1779       {'a',"all-versions","APT::Cache::AllVersions",0},
1780       {'n',"names-only","APT::Cache::NamesOnly",0},
1781       {0,"all-names","APT::Cache::AllNames",0},
1782       {0,"recurse","APT::Cache::RecurseDepends",0},
1783       {'c',"config-file",0,CommandLine::ConfigFile},
1784       {'o',"option",0,CommandLine::ArbItem},
1785       {0,"installed","APT::Cache::Installed",0},
1786       {0,0,0,0}};
1787    CommandLine::Dispatch CmdsA[] = {{"help",&ShowHelp},
1788                                     {"add",&DoAdd},
1789                                     {"gencaches",&GenCaches},
1790                                     {"showsrc",&ShowSrcPackage},
1791                                     {0,0}};
1792    CommandLine::Dispatch CmdsB[] = {{"showpkg",&DumpPackage},
1793                                     {"stats",&Stats},
1794                                     {"dump",&Dump},
1795                                     {"dumpavail",&DumpAvail},
1796                                     {"unmet",&UnMet},
1797                                     {"search",&Search},
1798                                     {"depends",&Depends},
1799                                     {"rdepends",&RDepends},
1800                                     {"dotty",&Dotty},
1801                                     {"xvcg",&XVcg},
1802                                     {"show",&ShowPackage},
1803                                     {"pkgnames",&ShowPkgNames},
1804                                     {"policy",&Policy},
1805                                     {"madison",&Madison},
1806                                     {0,0}};
1807
1808    CacheInitialize();
1809
1810    // Set up gettext support
1811    setlocale(LC_ALL,"");
1812    textdomain(PACKAGE);
1813
1814    // Parse the command line and initialize the package library
1815    CommandLine CmdL(Args,_config);
1816    if (pkgInitConfig(*_config) == false ||
1817        CmdL.Parse(argc,argv) == false ||
1818        pkgInitSystem(*_config,_system) == false)
1819    {
1820       _error->DumpErrors();
1821       return 100;
1822    }
1823
1824    // See if the help should be shown
1825    if (_config->FindB("help") == true ||
1826        CmdL.FileSize() == 0)
1827    {
1828       ShowHelp(CmdL);
1829       return 0;
1830    }
1831
1832    // Deal with stdout not being a tty
1833    if (isatty(STDOUT_FILENO) && _config->FindI("quiet",0) < 1)
1834       _config->Set("quiet","1");
1835
1836    if (CmdL.DispatchArg(CmdsA,false) == false && _error->PendingError() == false)
1837    {
1838       MMap *Map = 0;
1839       if (_config->FindB("APT::Cache::Generate",true) == false)
1840       {
1841          Map = new MMap(*new FileFd(_config->FindFile("Dir::Cache::pkgcache"),
1842                                     FileFd::ReadOnly),MMap::Public|MMap::ReadOnly);
1843       }
1844       else
1845       {
1846          // Open the cache file
1847          SrcList = new pkgSourceList;
1848          SrcList->ReadMainList();
1849
1850          // Generate it and map it
1851          OpProgress Prog;
1852          pkgMakeStatusCache(*SrcList,Prog,&Map,true);
1853       }
1854
1855       if (_error->PendingError() == false)
1856       {
1857          pkgCache Cache(Map);
1858          GCache = &Cache;
1859          if (_error->PendingError() == false)
1860             CmdL.DispatchArg(CmdsB);
1861       }
1862       delete Map;
1863    }
1864
1865    // Print any errors or warnings found during parsing
1866    if (_error->empty() == false)
1867    {
1868       bool Errors = _error->PendingError();
1869       _error->DumpErrors();
1870       return Errors == true?100:0;
1871    }
1872
1873    return 0;
1874 }
1875                                                                         /*}}}*/