cmdline/apt-mark.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 /* #####################################################################
   4    apt-mark - show and change auto-installed bit information
   5    ##################################################################### */
   6                                                                         /*}}}*/
   7 // Include Files                                                        /*{{{*/
   8 #include <config.h>
   9
  10 #include <apt-pkg/cachefile.h>
  11 #include <apt-pkg/cacheset.h>
  12 #include <apt-pkg/cmndline.h>
  13 #include <apt-pkg/error.h>
  14 #include <apt-pkg/fileutl.h>
  15 #include <apt-pkg/init.h>
  16 #include <apt-pkg/pkgsystem.h>
  17 #include <apt-pkg/strutl.h>
  18 #include <apt-pkg/cacheiterators.h>
  19 #include <apt-pkg/configuration.h>
  20 #include <apt-pkg/depcache.h>
  21 #include <apt-pkg/macros.h>
  22 #include <apt-pkg/pkgcache.h>
  23
  24 #include <apt-private/private-cmndline.h>
  25 #include <apt-private/private-output.h>
  26
  27 #include <errno.h>
  28 #include <fcntl.h>
  29 #include <stddef.h>
  30 #include <stdio.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <sys/wait.h>
  34 #include <unistd.h>
  35 #include <algorithm>
  36 #include <fstream>
  37 #include <iostream>
  38 #include <string>
  39 #include <vector>
  40
  41 #include <apti18n.h>
  42                                                                         /*}}}*/
  43 using namespace std;
  44
  45 /* DoAuto - mark packages as automatically/manually installed           {{{*/
  46 static bool DoAuto(CommandLine &CmdL)
  47 {
  48    pkgCacheFile CacheFile;
  49    pkgCache *Cache = CacheFile.GetPkgCache();
  50    pkgDepCache *DepCache = CacheFile.GetDepCache();
  51    if (unlikely(Cache == NULL || DepCache == NULL))
  52       return false;
  53
  54    APT::PackageList pkgset = APT::PackageList::FromCommandLine(CacheFile, CmdL.FileList + 1);
  55    if (pkgset.empty() == true)
  56       return _error->Error(_("No packages found"));
  57
  58    bool MarkAuto = strcasecmp(CmdL.FileList[0],"auto") == 0;
  59    int AutoMarkChanged = 0;
  60
  61    for (APT::PackageList::const_iterator Pkg = pkgset.begin(); Pkg != pkgset.end(); ++Pkg)
  62    {
  63       if (Pkg->CurrentVer == 0)
  64       {
  65          ioprintf(c1out,_("%s can not be marked as it is not installed.\n"), Pkg.FullName(true).c_str());
  66          continue;
  67       }
  68       else if ((((*DepCache)[Pkg].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto) == MarkAuto)
  69       {
  70          if (MarkAuto == false)
  71             ioprintf(c1out,_("%s was already set to manually installed.\n"), Pkg.FullName(true).c_str());
  72          else
  73             ioprintf(c1out,_("%s was already set to automatically installed.\n"), Pkg.FullName(true).c_str());
  74          continue;
  75       }
  76
  77       if (MarkAuto == false)
  78          ioprintf(c1out,_("%s set to manually installed.\n"), Pkg.FullName(true).c_str());
  79       else
  80          ioprintf(c1out,_("%s set to automatically installed.\n"), Pkg.FullName(true).c_str());
  81
  82       DepCache->MarkAuto(Pkg, MarkAuto);
  83       ++AutoMarkChanged;
  84    }
  85    if (AutoMarkChanged > 0 && _config->FindB("APT::Mark::Simulate", false) == false)
  86       return DepCache->writeStateFile(NULL);
  87    return true;
  88 }
  89                                                                         /*}}}*/
  90 /* DoMarkAuto - mark packages as automatically/manually installed       {{{*/
  91 /* Does the same as DoAuto but tries to do it exactly the same why as
  92    the python implementation did it so it can be a drop-in replacement */
  93 static bool DoMarkAuto(CommandLine &CmdL)
  94 {
  95    pkgCacheFile CacheFile;
  96    pkgCache *Cache = CacheFile.GetPkgCache();
  97    pkgDepCache *DepCache = CacheFile.GetDepCache();
  98    if (unlikely(Cache == NULL || DepCache == NULL))
  99       return false;
 100
 101    APT::PackageList pkgset = APT::PackageList::FromCommandLine(CacheFile, CmdL.FileList + 1);
 102    if (pkgset.empty() == true)
 103       return _error->Error(_("No packages found"));
 104
 105    bool const MarkAuto = strcasecmp(CmdL.FileList[0],"markauto") == 0;
 106    bool const Verbose = _config->FindB("APT::MarkAuto::Verbose", false);
 107    int AutoMarkChanged = 0;
 108
 109    for (APT::PackageList::const_iterator Pkg = pkgset.begin(); Pkg != pkgset.end(); ++Pkg)
 110    {
 111       if (Pkg->CurrentVer == 0 ||
 112           (((*DepCache)[Pkg].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto) == MarkAuto)
 113          continue;
 114
 115       if (Verbose == true)
 116          ioprintf(c1out, "changing %s to %d\n", Pkg.Name(), (MarkAuto == false) ? 0 : 1);
 117
 118       DepCache->MarkAuto(Pkg, MarkAuto);
 119       ++AutoMarkChanged;
 120    }
 121    if (AutoMarkChanged > 0 && _config->FindB("APT::Mark::Simulate", false) == false)
 122       return DepCache->writeStateFile(NULL);
 123
 124    _error->Notice(_("This command is deprecated. Please use 'apt-mark auto' and 'apt-mark manual' instead."));
 125
 126    return true;
 127 }
 128                                                                         /*}}}*/
 129 /* ShowAuto - show automatically installed packages (sorted)            {{{*/
 130 static bool ShowAuto(CommandLine &CmdL)
 131 {
 132    pkgCacheFile CacheFile;
 133    pkgCache *Cache = CacheFile.GetPkgCache();
 134    pkgDepCache *DepCache = CacheFile.GetDepCache();
 135    if (unlikely(Cache == NULL || DepCache == NULL))
 136       return false;
 137
 138    std::vector<string> packages;
 139
 140    bool const ShowAuto = strcasecmp(CmdL.FileList[0],"showauto") == 0;
 141
 142    if (CmdL.FileList[1] == 0)
 143    {
 144       packages.reserve(Cache->HeaderP->PackageCount / 3);
 145       for (pkgCache::PkgIterator P = Cache->PkgBegin(); P.end() == false; ++P)
 146          if (P->CurrentVer != 0 &&
 147              (((*DepCache)[P].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto) == ShowAuto)
 148             packages.push_back(P.FullName(true));
 149    }
 150    else
 151    {
 152       APT::CacheSetHelper helper(false); // do not show errors
 153       APT::PackageSet pkgset = APT::PackageSet::FromCommandLine(CacheFile, CmdL.FileList + 1, helper);
 154       packages.reserve(pkgset.size());
 155       for (APT::PackageSet::const_iterator P = pkgset.begin(); P != pkgset.end(); ++P)
 156          if (P->CurrentVer != 0 &&
 157              (((*DepCache)[P].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto) == ShowAuto)
 158             packages.push_back(P.FullName(true));
 159    }
 160
 161    std::sort(packages.begin(), packages.end());
 162
 163    for (vector<string>::const_iterator I = packages.begin(); I != packages.end(); ++I)
 164       std::cout << *I << std::endl;
 165
 166    return true;
 167 }
 168                                                                         /*}}}*/
 169 /* DoHold - mark packages as hold by dpkg                               {{{*/
 170 static bool DoHold(CommandLine &CmdL)
 171 {
 172    pkgCacheFile CacheFile;
 173    pkgCache *Cache = CacheFile.GetPkgCache();
 174    if (unlikely(Cache == NULL))
 175       return false;
 176
 177    APT::VersionVector pkgset = APT::VersionVector::FromCommandLine(CacheFile, CmdL.FileList + 1, APT::CacheSetHelper::INSTCAND);
 178    if (pkgset.empty() == true)
 179       return _error->Error(_("No packages found"));
 180
 181    bool const MarkHold = strcasecmp(CmdL.FileList[0],"hold") == 0;
 182
 183    auto const part = std::stable_partition(pkgset.begin(), pkgset.end(),
 184         [](pkgCache::VerIterator const &V) { return V.ParentPkg()->SelectedState == pkgCache::State::Hold; });
 185
 186    auto const doneBegin = MarkHold ? pkgset.begin() : part;
 187    auto const doneEnd = MarkHold ? part : pkgset.end();
 188    auto const changeBegin = MarkHold ? part : pkgset.begin();
 189    auto const changeEnd = MarkHold ? pkgset.end() : part;
 190
 191    std::for_each(doneBegin, doneEnd, [&MarkHold](pkgCache::VerIterator const &V) {
 192       if (MarkHold == true)
 193         ioprintf(c1out, _("%s was already set on hold.\n"), V.ParentPkg().FullName(true).c_str());
 194       else
 195         ioprintf(c1out, _("%s was already not hold.\n"), V.ParentPkg().FullName(true).c_str());
 196    });
 197
 198    if (doneBegin == pkgset.begin() && doneEnd == pkgset.end())
 199       return true;
 200
 201    if (_config->FindB("APT::Mark::Simulate", false) == true)
 202    {
 203       std::for_each(changeBegin, changeEnd, [&MarkHold](pkgCache::VerIterator const &V) {
 204         if (MarkHold == false)
 205            ioprintf(c1out, _("%s set on hold.\n"), V.ParentPkg().FullName(true).c_str());
 206         else
 207            ioprintf(c1out, _("Canceled hold on %s.\n"), V.ParentPkg().FullName(true).c_str());
 208       });
 209       return true;
 210    }
 211
 212    // Generate the base argument list for dpkg
 213    std::vector<const char *> Args;
 214    string Tmp = _config->Find("Dir::Bin::dpkg","dpkg");
 215    {
 216       string const dpkgChrootDir = _config->FindDir("DPkg::Chroot-Directory", "/");
 217       size_t dpkgChrootLen = dpkgChrootDir.length();
 218       if (dpkgChrootDir != "/" && Tmp.find(dpkgChrootDir) == 0)
 219       {
 220          if (dpkgChrootDir[dpkgChrootLen - 1] == '/')
 221             --dpkgChrootLen;
 222          Tmp = Tmp.substr(dpkgChrootLen);
 223       }
 224    }
 225    Args.push_back(Tmp.c_str());
 226
 227    // Stick in any custom dpkg options
 228    Configuration::Item const *Opts = _config->Tree("DPkg::Options");
 229    if (Opts != 0)
 230    {
 231       Opts = Opts->Child;
 232       for (; Opts != 0; Opts = Opts->Next)
 233       {
 234          if (Opts->Value.empty() == true)
 235             continue;
 236          Args.push_back(Opts->Value.c_str());
 237       }
 238    }
 239
 240    APT::VersionVector keepoffset;
 241    std::copy_if(changeBegin, changeEnd, std::back_inserter(keepoffset),
 242          [](pkgCache::VerIterator const &V) { return V.ParentPkg()->CurrentVer == 0; });
 243
 244    if (keepoffset.empty() == false)
 245    {
 246       size_t const BaseArgs = Args.size();
 247       Args.push_back("--merge-avail");
 248       // FIXME: supported only since 1.17.7 in dpkg
 249       Args.push_back("-");
 250       Args.push_back(NULL);
 251
 252       int external[2] = {-1, -1};
 253       if (pipe(external) != 0)
 254          return _error->WarningE("DoHold", "Can't create IPC pipe for dpkg --merge-avail");
 255
 256       pid_t dpkgMergeAvail = ExecFork();
 257       if (dpkgMergeAvail == 0)
 258       {
 259          close(external[1]);
 260          std::string const chrootDir = _config->FindDir("DPkg::Chroot-Directory");
 261          if (chrootDir != "/" && chroot(chrootDir.c_str()) != 0 && chdir("/") != 0)
 262             _error->WarningE("getArchitecture", "Couldn't chroot into %s for dpkg --merge-avail", chrootDir.c_str());
 263          dup2(external[0], STDIN_FILENO);
 264          int const nullfd = open("/dev/null", O_RDONLY);
 265          dup2(nullfd, STDOUT_FILENO);
 266          execvp(Args[0], (char**) &Args[0]);
 267          _error->WarningE("dpkgGo", "Can't get dpkg --merge-avail running!");
 268          _exit(2);
 269       }
 270
 271       FILE* dpkg = fdopen(external[1], "w");
 272       for (auto const &V: keepoffset)
 273          fprintf(dpkg, "Package: %s\nVersion: 0~\nArchitecture: %s\nMaintainer: Dummy Example <dummy@example.org>\n"
 274                "Description: dummy package record\n A record is needed to put a package on hold, so here it is.\n\n", V.ParentPkg().Name(), V.Arch());
 275       fclose(dpkg);
 276       keepoffset.clear();
 277
 278       if (dpkgMergeAvail > 0)
 279       {
 280          int Status = 0;
 281          while (waitpid(dpkgMergeAvail, &Status, 0) != dpkgMergeAvail)
 282          {
 283             if (errno == EINTR)
 284                continue;
 285             _error->WarningE("dpkgGo", _("Waited for %s but it wasn't there"), "dpkg --merge-avail");
 286             break;
 287          }
 288          if (WIFEXITED(Status) == false || WEXITSTATUS(Status) != 0)
 289             return _error->Error(_("Executing dpkg failed. Are you root?"));
 290       }
 291       Args.erase(Args.begin() + BaseArgs, Args.end());
 292    }
 293
 294    Args.push_back("--set-selections");
 295    Args.push_back(NULL);
 296
 297    int external[2] = {-1, -1};
 298    if (pipe(external) != 0)
 299       return _error->WarningE("DoHold", "Can't create IPC pipe for dpkg --set-selections");
 300
 301    pid_t dpkgSelection = ExecFork();
 302    if (dpkgSelection == 0)
 303    {
 304       close(external[1]);
 305       std::string const chrootDir = _config->FindDir("DPkg::Chroot-Directory");
 306       if (chrootDir != "/" && chroot(chrootDir.c_str()) != 0 && chdir("/") != 0)
 307          _error->WarningE("getArchitecture", "Couldn't chroot into %s for dpkg --set-selections", chrootDir.c_str());
 308       dup2(external[0], STDIN_FILENO);
 309       execvp(Args[0], (char**) &Args[0]);
 310       _error->WarningE("dpkgGo", "Can't get dpkg --set-selections running!");
 311       _exit(2);
 312    }
 313
 314    bool const dpkgMultiArch = _system->MultiArchSupported();
 315    FILE* dpkg = fdopen(external[1], "w");
 316    for (auto Ver = changeBegin; Ver != changeEnd; ++Ver)
 317    {
 318       pkgCache::PkgIterator P = Ver.ParentPkg();
 319       if (dpkgMultiArch == false)
 320          fprintf(dpkg, "%s", P.FullName(true).c_str());
 321       else
 322          fprintf(dpkg, "%s:%s", P.Name(), Ver.Arch());
 323
 324       if (MarkHold == true)
 325       {
 326          fprintf(dpkg, " hold\n");
 327          ioprintf(c1out,_("%s set on hold.\n"), P.FullName(true).c_str());
 328       }
 329       else
 330       {
 331          fprintf(dpkg, " install\n");
 332          ioprintf(c1out,_("Canceled hold on %s.\n"), P.FullName(true).c_str());
 333       }
 334    }
 335    fclose(dpkg);
 336
 337    if (dpkgSelection > 0)
 338    {
 339       int Status = 0;
 340       while (waitpid(dpkgSelection, &Status, 0) != dpkgSelection)
 341       {
 342          if (errno == EINTR)
 343             continue;
 344          _error->WarningE("dpkgGo", _("Waited for %s but it wasn't there"), "dpkg --set-selection");
 345          break;
 346       }
 347       if (WIFEXITED(Status) == true && WEXITSTATUS(Status) == 0)
 348          return true;
 349    }
 350    return _error->Error(_("Executing dpkg failed. Are you root?"));
 351 }
 352                                                                         /*}}}*/
 353 /* ShowHold - show packages set on hold in dpkg status                  {{{*/
 354 static bool ShowHold(CommandLine &CmdL)
 355 {
 356    pkgCacheFile CacheFile;
 357    pkgCache *Cache = CacheFile.GetPkgCache();
 358    if (unlikely(Cache == NULL))
 359       return false;
 360
 361    std::vector<string> packages;
 362
 363    if (CmdL.FileList[1] == 0)
 364    {
 365       packages.reserve(50); // how many holds are realistic? I hope just a few…
 366       for (pkgCache::PkgIterator P = Cache->PkgBegin(); P.end() == false; ++P)
 367          if (P->SelectedState == pkgCache::State::Hold)
 368             packages.push_back(P.FullName(true));
 369    }
 370    else
 371    {
 372       APT::CacheSetHelper helper(false); // do not show errors
 373       APT::PackageSet pkgset = APT::PackageSet::FromCommandLine(CacheFile, CmdL.FileList + 1, helper);
 374       packages.reserve(pkgset.size());
 375       for (APT::PackageSet::const_iterator P = pkgset.begin(); P != pkgset.end(); ++P)
 376          if (P->SelectedState == pkgCache::State::Hold)
 377             packages.push_back(P.FullName(true));
 378    }
 379
 380    std::sort(packages.begin(), packages.end());
 381
 382    for (vector<string>::const_iterator I = packages.begin(); I != packages.end(); ++I)
 383       std::cout << *I << std::endl;
 384
 385    return true;
 386 }
 387                                                                         /*}}}*/
 388 // ShowHelp - Show a help screen                                        /*{{{*/
 389 // ---------------------------------------------------------------------
 390 /* */
 391 static bool ShowHelp(CommandLine &)
 392 {
 393    ioprintf(std::cout, "%s %s (%s)\n", PACKAGE, PACKAGE_VERSION, COMMON_ARCH);
 394
 395    cout <<
 396     _("Usage: apt-mark [options] {auto|manual} pkg1 [pkg2 ...]\n"
 397       "\n"
 398       "apt-mark is a simple command line interface for marking packages\n"
 399       "as manually or automatically installed. It can also list marks.\n"
 400       "\n"
 401       "Commands:\n"
 402       "   auto - Mark the given packages as automatically installed\n"
 403       "   manual - Mark the given packages as manually installed\n"
 404       "   hold - Mark a package as held back\n"
 405       "   unhold - Unset a package set as held back\n"
 406       "   showauto - Print the list of automatically installed packages\n"
 407       "   showmanual - Print the list of manually installed packages\n"
 408       "   showhold - Print the list of package on hold\n"
 409       "\n"
 410       "Options:\n"
 411       "  -h  This help text.\n"
 412       "  -q  Loggable output - no progress indicator\n"
 413       "  -qq No output except for errors\n"
 414       "  -s  No-act. Just prints what would be done.\n"
 415       "  -f  read/write auto/manual marking in the given file\n"
 416       "  -c=? Read this configuration file\n"
 417       "  -o=? Set an arbitrary configuration option, eg -o dir::cache=/tmp\n"
 418       "See the apt-mark(8) and apt.conf(5) manual pages for more information.")
 419       << std::endl;
 420    return true;
 421 }
 422                                                                         /*}}}*/
 423 int main(int argc,const char *argv[])                                   /*{{{*/
 424 {
 425    CommandLine::Dispatch Cmds[] = {{"help",&ShowHelp},
 426                                    {"auto",&DoAuto},
 427                                    {"manual",&DoAuto},
 428                                    {"hold",&DoHold},
 429                                    {"unhold",&DoHold},
 430                                    {"showauto",&ShowAuto},
 431                                    {"showmanual",&ShowAuto},
 432                                    {"showhold",&ShowHold},
 433                                    // be nice and forgive the typo
 434                                    {"showholds",&ShowHold},
 435                                    // be nice and forgive it as it is technical right
 436                                    {"install",&DoHold},
 437                                    // obsolete commands for compatibility
 438                                    {"markauto", &DoMarkAuto},
 439                                    {"unmarkauto", &DoMarkAuto},
 440                                    {0,0}};
 441
 442    std::vector<CommandLine::Args> Args = getCommandArgs("apt-mark", CommandLine::GetCommand(Cmds, argc, argv));
 443
 444    // Set up gettext support
 445    setlocale(LC_ALL,"");
 446    textdomain(PACKAGE);
 447
 448    CommandLine CmdL;
 449    ParseCommandLine(CmdL, Cmds, Args.data(), &_config, &_system, argc, argv, ShowHelp);
 450
 451    InitOutput();
 452
 453    // Match the operation
 454    CmdL.DispatchArg(Cmds);
 455
 456    // Print any errors or warnings found during parsing
 457    bool const Errors = _error->PendingError();
 458    if (_config->FindI("quiet",0) > 0)
 459       _error->DumpErrors();
 460    else
 461       _error->DumpErrors(GlobalError::DEBUG);
 462    return Errors == true ? 100 : 0;
 463 }
 464                                                                         /*}}}*/