cmdline/apt-cache.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: apt-cache.cc,v 1.20 1998/12/14 03:39:15 jgg 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. The
  10    only really usefull function right now is dumpavail which is used
  11    by the dselect method. Everything else is ment as a debug aide.
  12
  13    Returns 100 on failure, 0 on success.
  14
  15    ##################################################################### */
  16                                                                         /*}}}*/
  17 // Include Files                                                        /*{{{*/
  18 #include <apt-pkg/error.h>
  19 #include <apt-pkg/pkgcachegen.h>
  20 #include <apt-pkg/deblistparser.h>
  21 #include <apt-pkg/init.h>
  22 #include <apt-pkg/progress.h>
  23 #include <apt-pkg/sourcelist.h>
  24 #include <apt-pkg/cmndline.h>
  25 #include <strutl.h>
  26
  27 #include <iostream.h>
  28 #include <config.h>
  29                                                                         /*}}}*/
  30
  31 pkgCache *GCache = 0;
  32
  33 // UnMet - Show unmet dependencies                                      /*{{{*/
  34 // ---------------------------------------------------------------------
  35 /* */
  36 bool UnMet(CommandLine &CmdL)
  37 {
  38    pkgCache &Cache = *GCache;
  39    bool Important = _config->FindB("APT::Cache::Important",false);
  40
  41    for (pkgCache::PkgIterator P = Cache.PkgBegin(); P.end() == false; P++)
  42    {
  43       for (pkgCache::VerIterator V = P.VersionList(); V.end() == false; V++)
  44       {
  45          bool Header = false;
  46          for (pkgCache::DepIterator D = V.DependsList(); D.end() == false;)
  47          {
  48             // Collect or groups
  49             pkgCache::DepIterator Start;
  50             pkgCache::DepIterator End;
  51             D.GlobOr(Start,End);
  52
  53 /*          cout << "s: Check " << Start.TargetPkg().Name() << ',' <<
  54                End.TargetPkg().Name() << endl;*/
  55
  56             // Skip conflicts and replaces
  57             if (End->Type != pkgCache::Dep::PreDepends &&
  58                 End->Type != pkgCache::Dep::Depends &&
  59                 End->Type != pkgCache::Dep::Suggests &&
  60                 End->Type != pkgCache::Dep::Recommends)
  61                continue;
  62
  63             // Important deps only
  64             if (Important == true)
  65                if (End->Type != pkgCache::Dep::PreDepends &&
  66                    End->Type != pkgCache::Dep::Depends)
  67                   continue;
  68
  69             // Verify the or group
  70             bool OK = false;
  71             pkgCache::DepIterator RealStart = Start;
  72             do
  73             {
  74                // See if this dep is Ok
  75                pkgCache::Version **VList = Start.AllTargets();
  76                if (*VList != 0)
  77                {
  78                   OK = true;
  79                   delete [] VList;
  80                   break;
  81                }
  82                delete [] VList;
  83
  84                if (Start == End)
  85                   break;
  86                Start++;
  87             }
  88             while (1);
  89
  90             // The group is OK
  91             if (OK == true)
  92                continue;
  93
  94             // Oops, it failed..
  95             if (Header == false)
  96                   cout << "Package " << P.Name() << " version " <<
  97                V.VerStr() << " has an unmet dep:" << endl;
  98             Header = true;
  99
 100             // Print out the dep type
 101             cout << " " << End.DepType() << ": ";
 102
 103             // Show the group
 104             Start = RealStart;
 105             do
 106             {
 107                cout << Start.TargetPkg().Name();
 108                if (Start.TargetVer() != 0)
 109                   cout << " (" << Start.CompType() << " " << Start.TargetVer() <<
 110                   ")";
 111                if (Start == End)
 112                   break;
 113                cout << " | ";
 114                Start++;
 115             }
 116             while (1);
 117
 118             cout << endl;
 119          }
 120       }
 121    }
 122    return true;
 123 }
 124                                                                         /*}}}*/
 125 // DumpPackage - Show a dump of a package record                        /*{{{*/
 126 // ---------------------------------------------------------------------
 127 /* */
 128 bool DumpPackage(CommandLine &CmdL)
 129 {
 130    pkgCache &Cache = *GCache;
 131    for (const char **I = CmdL.FileList + 1; *I != 0; I++)
 132    {
 133       pkgCache::PkgIterator Pkg = Cache.FindPkg(*I);
 134       if (Pkg.end() == true)
 135       {
 136          _error->Warning("Unable to locate package %s",*I);
 137          continue;
 138       }
 139
 140       cout << "Package: " << Pkg.Name() << endl;
 141       cout << "Versions: ";
 142       for (pkgCache::VerIterator Cur = Pkg.VersionList(); Cur.end() != true; Cur++)
 143       {
 144          cout << Cur.VerStr();
 145          for (pkgCache::VerFileIterator Vf = Cur.FileList(); Vf.end() == false; Vf++)
 146             cout << "(" << Vf.File().FileName() << ")";
 147          cout << ',';
 148       }
 149
 150       cout << endl;
 151
 152       cout << "Reverse Depends: " << endl;
 153       for (pkgCache::DepIterator D = Pkg.RevDependsList(); D.end() != true; D++)
 154          cout << "  " << D.ParentPkg().Name() << ',' << D.TargetPkg().Name() << endl;
 155
 156       cout << "Dependencies: " << endl;
 157       for (pkgCache::VerIterator Cur = Pkg.VersionList(); Cur.end() != true; Cur++)
 158       {
 159          cout << Cur.VerStr() << " - ";
 160          for (pkgCache::DepIterator Dep = Cur.DependsList(); Dep.end() != true; Dep++)
 161             cout << Dep.TargetPkg().Name() << " (" << (int)Dep->CompareOp << " " << Dep.TargetVer() << ") ";
 162          cout << endl;
 163       }
 164
 165       cout << "Provides: " << endl;
 166       for (pkgCache::VerIterator Cur = Pkg.VersionList(); Cur.end() != true; Cur++)
 167       {
 168          cout << Cur.VerStr() << " - ";
 169          for (pkgCache::PrvIterator Prv = Cur.ProvidesList(); Prv.end() != true; Prv++)
 170             cout << Prv.ParentPkg().Name() << " ";
 171          cout << endl;
 172       }
 173       cout << "Reverse Provides: " << endl;
 174       for (pkgCache::PrvIterator Prv = Pkg.ProvidesList(); Prv.end() != true; Prv++)
 175          cout << Prv.OwnerPkg().Name() << " " << Prv.OwnerVer().VerStr();
 176       cout << endl;
 177
 178    }
 179
 180    return true;
 181 }
 182                                                                         /*}}}*/
 183 // Stats - Dump some nice statistics                                    /*{{{*/
 184 // ---------------------------------------------------------------------
 185 /* */
 186 bool Stats(CommandLine &Cmd)
 187 {
 188    pkgCache &Cache = *GCache;
 189    cout << "Total Package Names : " << Cache.Head().PackageCount << " (" <<
 190       SizeToStr(Cache.Head().PackageCount*Cache.Head().PackageSz) << ')' << endl;
 191    pkgCache::PkgIterator I = Cache.PkgBegin();
 192
 193    int Normal = 0;
 194    int Virtual = 0;
 195    int NVirt = 0;
 196    int DVirt = 0;
 197    int Missing = 0;
 198    for (;I.end() != true; I++)
 199    {
 200       if (I->VersionList != 0 && I->ProvidesList == 0)
 201       {
 202          Normal++;
 203          continue;
 204       }
 205
 206       if (I->VersionList != 0 && I->ProvidesList != 0)
 207       {
 208          NVirt++;
 209          continue;
 210       }
 211
 212       if (I->VersionList == 0 && I->ProvidesList != 0)
 213       {
 214          // Only 1 provides
 215          if (I.ProvidesList()->NextProvides == 0)
 216          {
 217             DVirt++;
 218          }
 219          else
 220             Virtual++;
 221          continue;
 222       }
 223       if (I->VersionList == 0 && I->ProvidesList == 0)
 224       {
 225          Missing++;
 226          continue;
 227       }
 228    }
 229    cout << "  Normal Packages: " << Normal << endl;
 230    cout << "  Pure Virtual Packages: " << Virtual << endl;
 231    cout << "  Single Virtual Packages: " << DVirt << endl;
 232    cout << "  Mixed Virtual Packages: " << NVirt << endl;
 233    cout << "  Missing: " << Missing << endl;
 234
 235    cout << "Total Distinct Versions: " << Cache.Head().VersionCount << " (" <<
 236       SizeToStr(Cache.Head().VersionCount*Cache.Head().VersionSz) << ')' << endl;
 237    cout << "Total Dependencies: " << Cache.Head().DependsCount << " (" <<
 238       SizeToStr(Cache.Head().DependsCount*Cache.Head().DependencySz) << ')' << endl;
 239
 240    cout << "Total Ver/File relations: " << Cache.Head().VerFileCount << " (" <<
 241       SizeToStr(Cache.Head().VerFileCount*Cache.Head().VerFileSz) << ')' << endl;
 242    cout << "Total Provides Mappings: " << Cache.Head().ProvidesCount << " (" <<
 243       SizeToStr(Cache.Head().ProvidesCount*Cache.Head().ProvidesSz) << ')' << endl;
 244
 245    // String list stats
 246    unsigned long Size = 0;
 247    unsigned long Count = 0;
 248    for (pkgCache::StringItem *I = Cache.StringItemP + Cache.Head().StringList;
 249         I!= Cache.StringItemP; I = Cache.StringItemP + I->NextItem)
 250    {
 251       Count++;
 252       Size += strlen(Cache.StrP + I->String);
 253    }
 254    cout << "Total Globbed Strings: " << Count << " (" << SizeToStr(Size) << ')' << endl;
 255
 256    unsigned long Slack = 0;
 257    for (int I = 0; I != 7; I++)
 258       Slack += Cache.Head().Pools[I].ItemSize*Cache.Head().Pools[I].Count;
 259    cout << "Total Slack space: " << SizeToStr(Slack) << endl;
 260
 261    unsigned long Total = 0;
 262    Total = Slack + Size + Cache.Head().DependsCount*Cache.Head().DependencySz +
 263            Cache.Head().VersionCount*Cache.Head().VersionSz +
 264            Cache.Head().PackageCount*Cache.Head().PackageSz +
 265            Cache.Head().VerFileCount*Cache.Head().VerFileSz +
 266            Cache.Head().ProvidesCount*Cache.Head().ProvidesSz;
 267    cout << "Total Space Accounted for: " << SizeToStr(Total) << endl;
 268
 269    return true;
 270 }
 271                                                                         /*}}}*/
 272 // Check - Check some things about the cache                            /*{{{*/
 273 // ---------------------------------------------------------------------
 274 /* Debug aide mostly */
 275 bool Check(CommandLine &Cmd)
 276 {
 277    pkgCache &Cache = *GCache;
 278    pkgCache::PkgIterator Pkg = Cache.PkgBegin();
 279    for (;Pkg.end() != true; Pkg++)
 280    {
 281       if (Pkg.Section() == 0 && Pkg->VersionList != 0)
 282          cout << "Bad section " << Pkg.Name() << endl;
 283
 284       for (pkgCache::VerIterator Cur = Pkg.VersionList();
 285            Cur.end() != true; Cur++)
 286       {
 287          if (Cur->Priority < 1 || Cur->Priority > 5)
 288             cout << "Bad prio " << Pkg.Name() << ',' << Cur.VerStr() << " == " << (int)Cur->Priority << endl;
 289       }
 290    }
 291    return true;
 292 }
 293                                                                         /*}}}*/
 294 // Dump - show everything                                               /*{{{*/
 295 // ---------------------------------------------------------------------
 296 /* */
 297 bool Dump(CommandLine &Cmd)
 298 {
 299    pkgCache &Cache = *GCache;
 300    for (pkgCache::PkgIterator P = Cache.PkgBegin(); P.end() == false; P++)
 301    {
 302       cout << "Package: " << P.Name() << endl;
 303       for (pkgCache::VerIterator V = P.VersionList(); V.end() == false; V++)
 304       {
 305          cout << " Version: " << V.VerStr() << endl;
 306          cout << "     File: " << V.FileList().File().FileName() << endl;
 307          for (pkgCache::DepIterator D = V.DependsList(); D.end() == false; D++)
 308             cout << "  Depends: " << D.TargetPkg().Name() << ' ' << D.TargetVer() << endl;
 309       }
 310    }
 311
 312    for (pkgCache::PkgFileIterator F(Cache); F.end() == false; F++)
 313    {
 314       cout << "File: " << F.FileName() << endl;
 315       cout << " Size: " << F->Size << endl;
 316       cout << " ID: " << F->ID << endl;
 317       cout << " Flags: " << F->Flags << endl;
 318       cout << " Time: " << TimeRFC1123(F->mtime) << endl;
 319       cout << " Archive: " << F.Archive() << endl;
 320       cout << " Component: " << F.Component() << endl;
 321       cout << " Version: " << F.Version() << endl;
 322       cout << " Origin: " << F.Origin() << endl;
 323       cout << " Label: " << F.Label() << endl;
 324       cout << " Architecture: " << F.Architecture() << endl;
 325    }
 326
 327    return true;
 328 }
 329                                                                         /*}}}*/
 330 // DumpAvail - Print out the available list                             /*{{{*/
 331 // ---------------------------------------------------------------------
 332 /* This is needed to make dpkg --merge happy */
 333 bool DumpAvail(CommandLine &Cmd)
 334 {
 335    pkgCache &Cache = *GCache;
 336    unsigned char *Buffer = new unsigned char[Cache.HeaderP->MaxVerFileSize];
 337
 338    for (pkgCache::PkgFileIterator I = Cache.FileBegin(); I.end() == false; I++)
 339    {
 340       if ((I->Flags & pkgCache::Flag::NotSource) != 0)
 341          continue;
 342
 343       if (I.IsOk() == false)
 344       {
 345          delete [] Buffer;
 346          return _error->Error("Package file %s is out of sync.",I.FileName());
 347       }
 348
 349       FileFd PkgF(I.FileName(),FileFd::ReadOnly);
 350       if (_error->PendingError() == true)
 351       {
 352          delete [] Buffer;
 353          return false;
 354       }
 355
 356       /* Write all of the records from this package file, we search the entire
 357          structure to find them */
 358       for (pkgCache::PkgIterator P = Cache.PkgBegin(); P.end() == false; P++)
 359       {
 360          for (pkgCache::VerIterator V = P.VersionList(); V.end() == false; V++)
 361          {
 362             if (V->FileList == 0)
 363                continue;
 364             if (V.FileList().File() != I)
 365                continue;
 366
 367             // Read the record and then write it out again.
 368             if (PkgF.Seek(V.FileList()->Offset) == false ||
 369                 PkgF.Read(Buffer,V.FileList()->Size) == false ||
 370                 write(STDOUT_FILENO,Buffer,V.FileList()->Size) != V.FileList()->Size)
 371             {
 372                delete [] Buffer;
 373                return false;
 374             }
 375          }
 376       }
 377    }
 378
 379    return true;
 380 }
 381                                                                         /*}}}*/
 382 // DoAdd - Perform an adding operation                                  /*{{{*/
 383 // ---------------------------------------------------------------------
 384 /* */
 385 bool DoAdd(CommandLine &CmdL)
 386 {
 387    // Make sure there is at least one argument
 388    if (CmdL.FileSize() <= 1)
 389       return _error->Error("You must give at least one file name");
 390
 391    // Open the cache
 392    FileFd CacheF(_config->FindFile("Dir::Cache::pkgcache"),FileFd::WriteAny);
 393    if (_error->PendingError() == true)
 394       return false;
 395
 396    DynamicMMap Map(CacheF,MMap::Public);
 397    if (_error->PendingError() == true)
 398       return false;
 399
 400    OpTextProgress Progress(*_config);
 401    pkgCacheGenerator Gen(Map,Progress);
 402    if (_error->PendingError() == true)
 403       return false;
 404
 405    unsigned long Length = CmdL.FileSize() - 1;
 406    for (const char **I = CmdL.FileList + 1; *I != 0; I++)
 407    {
 408       Progress.OverallProgress(I - CmdL.FileList,Length,1,"Generating cache");
 409       Progress.SubProgress(Length);
 410
 411       // Do the merge
 412       FileFd TagF(*I,FileFd::ReadOnly);
 413       debListParser Parser(TagF);
 414       if (_error->PendingError() == true)
 415          return _error->Error("Problem opening %s",*I);
 416
 417       if (Gen.SelectFile(*I) == false)
 418          return _error->Error("Problem with SelectFile");
 419
 420       if (Gen.MergeList(Parser) == false)
 421          return _error->Error("Problem with MergeList");
 422    }
 423
 424    Progress.Done();
 425    GCache = &Gen.GetCache();
 426    Stats(CmdL);
 427
 428    return true;
 429 }
 430                                                                         /*}}}*/
 431 // GenCaches - Call the main cache generator                            /*{{{*/
 432 // ---------------------------------------------------------------------
 433 /* */
 434 bool GenCaches(CommandLine &Cmd)
 435 {
 436    OpTextProgress Progress(*_config);
 437
 438    pkgSourceList List;
 439    List.ReadMainList();
 440    return pkgMakeStatusCache(List,Progress);
 441 }
 442                                                                         /*}}}*/
 443 // ShowHelp - Show a help screen                                        /*{{{*/
 444 // ---------------------------------------------------------------------
 445 /* */
 446 bool ShowHelp(CommandLine &Cmd)
 447 {
 448    cout << PACKAGE << ' ' << VERSION << " for " << ARCHITECTURE <<
 449        " compiled on " << __DATE__ << "  " << __TIME__ << endl;
 450
 451    cout << "Usage: apt-cache [options] command" << endl;
 452    cout << "       apt-cache [options] add file1 [file1 ...]" << endl;
 453    cout << "       apt-cache [options] showpkg pkg1 [pkg2 ...]" << endl;
 454    cout << endl;
 455    cout << "apt-cache is a low-level tool used to manipulate APT's binary" << endl;
 456    cout << "cache files stored in " << _config->FindFile("Dir::Cache") << endl;
 457    cout << "It is not ment for ordinary use only as a debug aide." << endl;
 458    cout << endl;
 459    cout << "Commands:" << endl;
 460    cout << "   add - Add an package file to the source cache" << endl;
 461    cout << "   gencaches - Build both the package and source cache" << endl;
 462    cout << "   showpkg - Show some general information for a single package" << endl;
 463    cout << "   stats - Show some basic statistics" << endl;
 464    cout << "   dump - Show the entire file in a terse form" << endl;
 465    cout << "   dumpavail - Print an available file to stdout" << endl;
 466    cout << "   unmet - Show unmet dependencies" << endl;
 467    cout << "   check - Check the cache a bit" << endl;
 468    cout << endl;
 469    cout << "Options:" << endl;
 470    cout << "  -h   This help text." << endl;
 471    cout << "  -p=? The package cache. [" << _config->FindFile("Dir::Cache::pkgcache") << ']' << endl;
 472    cout << "  -s=? The source cache. [" << _config->FindFile("Dir::Cache::srcpkgcache") << ']' << endl;
 473    cout << "  -q   Disable progress indicator." << endl;
 474    cout << "  -i   Show only important deps for the unmet command." << endl;
 475    cout << "  -c=? Read this configuration file" << endl;
 476    cout << "  -o=? Set an arbitary configuration option, ie -o dir::cache=/tmp" << endl;
 477    cout << "See the apt-cache(8) and apt.conf(8) manual pages for more information." << endl;
 478    return 100;
 479 }
 480                                                                         /*}}}*/
 481 // CacheInitialize - Initialize things for apt-cache                    /*{{{*/
 482 // ---------------------------------------------------------------------
 483 /* */
 484 void CacheInitialize()
 485 {
 486    _config->Set("quiet",0);
 487    _config->Set("help",false);
 488 }
 489                                                                         /*}}}*/
 490
 491 int main(int argc,const char *argv[])
 492 {
 493    CommandLine::Args Args[] = {
 494       {'h',"help","help",0},
 495       {'p',"pkg-cache","Dir::Cache::pkgcache",CommandLine::HasArg},
 496       {'s',"src-cache","Dir::Cache::srcpkgcache",CommandLine::HasArg},
 497       {'q',"quiet","quiet",CommandLine::IntLevel},
 498       {'i',"important","APT::Cache::Important",0},
 499       {'c',"config-file",0,CommandLine::ConfigFile},
 500       {'o',"option",0,CommandLine::ArbItem},
 501       {0,0,0,0}};
 502    CommandLine::Dispatch CmdsA[] = {{"help",&ShowHelp},
 503                                     {"add",&DoAdd},
 504                                     {"gencaches",&GenCaches},
 505                                     {0,0}};
 506    CommandLine::Dispatch CmdsB[] = {{"showpkg",&DumpPackage},
 507                                     {"stats",&Stats},
 508                                     {"dump",&Dump},
 509                                     {"dumpavail",&DumpAvail},
 510                                     {"unmet",&UnMet},
 511                                     {"check",&Check},
 512                                     {0,0}};
 513
 514    CacheInitialize();
 515
 516    // Parse the command line and initialize the package library
 517    CommandLine CmdL(Args,_config);
 518    if (pkgInitialize(*_config) == false ||
 519        CmdL.Parse(argc,argv) == false)
 520    {
 521       _error->DumpErrors();
 522       return 100;
 523    }
 524
 525    // See if the help should be shown
 526    if (_config->FindB("help") == true ||
 527        CmdL.FileSize() == 0)
 528       return ShowHelp(CmdL);
 529
 530    if (CmdL.DispatchArg(CmdsA,false) == false && _error->PendingError() == false)
 531    {
 532       // Open the cache file
 533       FileFd CacheF(_config->FindFile("Dir::Cache::pkgcache"),FileFd::ReadOnly);
 534       MMap Map(CacheF,MMap::Public | MMap::ReadOnly);
 535       if (_error->PendingError() == false)
 536       {
 537          pkgCache Cache(Map);
 538          GCache = &Cache;
 539          if (_error->PendingError() == false)
 540             CmdL.DispatchArg(CmdsB);
 541       }
 542    }
 543
 544    // Print any errors or warnings found during parsing
 545    if (_error->empty() == false)
 546    {
 547       bool Errors = _error->PendingError();
 548       _error->DumpErrors();
 549       return Errors == true?100:0;
 550    }
 551
 552    return 0;
 553 }