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::PackageList pkgset = APT::PackageList::FromCommandLine(CacheFile, CmdL.FileList + 1);
 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::PkgIterator const &P) { return P->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::PkgIterator const &P) {
 192       if (MarkHold == true)
 193         ioprintf(c1out, _("%s was already set on hold.\n"), P.FullName(true).c_str());
 194       else
 195         ioprintf(c1out, _("%s was already not hold.\n"), P.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::PkgIterator const &P) {
 204         if (MarkHold == false)
 205            ioprintf(c1out, _("%s set on hold.\n"), P.FullName(true).c_str());
 206         else
 207            ioprintf(c1out, _("Canceled hold on %s.\n"), P.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::PackageList keepoffset;
 241    std::copy_if(changeBegin, changeEnd, std::back_inserter(keepoffset),
 242          [](pkgCache::PkgIterator const &P) { return P->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 (APT::PackageList::iterator Pkg = keepoffset.begin(); Pkg != keepoffset.end(); ++Pkg)
 273       {
 274          char const * Arch;
 275          if (Pkg->VersionList != 0)
 276             Arch = Pkg.VersionList().Arch();
 277          else
 278             Arch = Pkg.Arch();
 279          fprintf(dpkg, "Package: %s\nVersion: 0~\nArchitecture: %s\nMaintainer: Dummy Example <dummy@example.org>\n"
 280                "Description: dummy package record\n A record is needed to put a package on hold, so here it is.\n\n", Pkg.Name(), Arch);
 281       }
 282       fclose(dpkg);
 283       keepoffset.clear();
 284
 285       if (dpkgMergeAvail > 0)
 286       {
 287          int Status = 0;
 288          while (waitpid(dpkgMergeAvail, &Status, 0) != dpkgMergeAvail)
 289          {
 290             if (errno == EINTR)
 291                continue;
 292             _error->WarningE("dpkgGo", _("Waited for %s but it wasn't there"), "dpkg --merge-avail");
 293             break;
 294          }
 295          if (WIFEXITED(Status) == false || WEXITSTATUS(Status) != 0)
 296             return _error->Error(_("Executing dpkg failed. Are you root?"));
 297       }
 298       Args.erase(Args.begin() + BaseArgs, Args.end());
 299    }
 300
 301    Args.push_back("--set-selections");
 302    Args.push_back(NULL);
 303
 304    int external[2] = {-1, -1};
 305    if (pipe(external) != 0)
 306       return _error->WarningE("DoHold", "Can't create IPC pipe for dpkg --set-selections");
 307
 308    pid_t dpkgSelection = ExecFork();
 309    if (dpkgSelection == 0)
 310    {
 311       close(external[1]);
 312       std::string const chrootDir = _config->FindDir("DPkg::Chroot-Directory");
 313       if (chrootDir != "/" && chroot(chrootDir.c_str()) != 0 && chdir("/") != 0)
 314          _error->WarningE("getArchitecture", "Couldn't chroot into %s for dpkg --set-selections", chrootDir.c_str());
 315       dup2(external[0], STDIN_FILENO);
 316       execvp(Args[0], (char**) &Args[0]);
 317       _error->WarningE("dpkgGo", "Can't get dpkg --set-selections running!");
 318       _exit(2);
 319    }
 320
 321    bool const dpkgMultiArch = _system->MultiArchSupported();
 322    FILE* dpkg = fdopen(external[1], "w");
 323    for (auto Pkg = changeBegin; Pkg != changeEnd; ++Pkg)
 324    {
 325       if (dpkgMultiArch == false)
 326          fprintf(dpkg, "%s", Pkg.FullName(true).c_str());
 327       else
 328       {
 329          if (Pkg->CurrentVer != 0)
 330             fprintf(dpkg, "%s:%s", Pkg.Name(), Pkg.CurrentVer().Arch());
 331          else if (Pkg.VersionList().end() == false)
 332             fprintf(dpkg, "%s:%s", Pkg.Name(), Pkg.VersionList().Arch());
 333          else
 334             fprintf(dpkg, "%s", Pkg.FullName(false).c_str());
 335       }
 336
 337       if (MarkHold == true)
 338       {
 339          fprintf(dpkg, " hold\n");
 340          ioprintf(c1out,_("%s set on hold.\n"), Pkg.FullName(true).c_str());
 341       }
 342       else
 343       {
 344          fprintf(dpkg, " install\n");
 345          ioprintf(c1out,_("Canceled hold on %s.\n"), Pkg.FullName(true).c_str());
 346       }
 347    }
 348    fclose(dpkg);
 349
 350    if (dpkgSelection > 0)
 351    {
 352       int Status = 0;
 353       while (waitpid(dpkgSelection, &Status, 0) != dpkgSelection)
 354       {
 355          if (errno == EINTR)
 356             continue;
 357          _error->WarningE("dpkgGo", _("Waited for %s but it wasn't there"), "dpkg --set-selection");
 358          break;
 359       }
 360       if (WIFEXITED(Status) == true && WEXITSTATUS(Status) == 0)
 361          return true;
 362    }
 363    return _error->Error(_("Executing dpkg failed. Are you root?"));
 364 }
 365                                                                         /*}}}*/
 366 /* ShowHold - show packages set on hold in dpkg status                  {{{*/
 367 static bool ShowHold(CommandLine &CmdL)
 368 {
 369    pkgCacheFile CacheFile;
 370    pkgCache *Cache = CacheFile.GetPkgCache();
 371    if (unlikely(Cache == NULL))
 372       return false;
 373
 374    std::vector<string> packages;
 375
 376    if (CmdL.FileList[1] == 0)
 377    {
 378       packages.reserve(50); // how many holds are realistic? I hope just a few…
 379       for (pkgCache::PkgIterator P = Cache->PkgBegin(); P.end() == false; ++P)
 380          if (P->SelectedState == pkgCache::State::Hold)
 381             packages.push_back(P.FullName(true));
 382    }
 383    else
 384    {
 385       APT::CacheSetHelper helper(false); // do not show errors
 386       APT::PackageSet pkgset = APT::PackageSet::FromCommandLine(CacheFile, CmdL.FileList + 1, helper);
 387       packages.reserve(pkgset.size());
 388       for (APT::PackageSet::const_iterator P = pkgset.begin(); P != pkgset.end(); ++P)
 389          if (P->SelectedState == pkgCache::State::Hold)
 390             packages.push_back(P.FullName(true));
 391    }
 392
 393    std::sort(packages.begin(), packages.end());
 394
 395    for (vector<string>::const_iterator I = packages.begin(); I != packages.end(); ++I)
 396       std::cout << *I << std::endl;
 397
 398    return true;
 399 }
 400                                                                         /*}}}*/
 401 // ShowHelp - Show a help screen                                        /*{{{*/
 402 // ---------------------------------------------------------------------
 403 /* */
 404 static bool ShowHelp(CommandLine &)
 405 {
 406    ioprintf(std::cout, "%s %s (%s)\n", PACKAGE, PACKAGE_VERSION, COMMON_ARCH);
 407
 408    cout <<
 409     _("Usage: apt-mark [options] {auto|manual} pkg1 [pkg2 ...]\n"
 410       "\n"
 411       "apt-mark is a simple command line interface for marking packages\n"
 412       "as manually or automatically installed. It can also list marks.\n"
 413       "\n"
 414       "Commands:\n"
 415       "   auto - Mark the given packages as automatically installed\n"
 416       "   manual - Mark the given packages as manually installed\n"
 417       "   hold - Mark a package as held back\n"
 418       "   unhold - Unset a package set as held back\n"
 419       "   showauto - Print the list of automatically installed packages\n"
 420       "   showmanual - Print the list of manually installed packages\n"
 421       "   showhold - Print the list of package on hold\n"
 422       "\n"
 423       "Options:\n"
 424       "  -h  This help text.\n"
 425       "  -q  Loggable output - no progress indicator\n"
 426       "  -qq No output except for errors\n"
 427       "  -s  No-act. Just prints what would be done.\n"
 428       "  -f  read/write auto/manual marking in the given file\n"
 429       "  -c=? Read this configuration file\n"
 430       "  -o=? Set an arbitrary configuration option, eg -o dir::cache=/tmp\n"
 431       "See the apt-mark(8) and apt.conf(5) manual pages for more information.")
 432       << std::endl;
 433    return true;
 434 }
 435                                                                         /*}}}*/
 436 int main(int argc,const char *argv[])                                   /*{{{*/
 437 {
 438    CommandLine::Dispatch Cmds[] = {{"help",&ShowHelp},
 439                                    {"auto",&DoAuto},
 440                                    {"manual",&DoAuto},
 441                                    {"hold",&DoHold},
 442                                    {"unhold",&DoHold},
 443                                    {"showauto",&ShowAuto},
 444                                    {"showmanual",&ShowAuto},
 445                                    {"showhold",&ShowHold},
 446                                    // be nice and forgive the typo
 447                                    {"showholds",&ShowHold},
 448                                    // be nice and forgive it as it is technical right
 449                                    {"install",&DoHold},
 450                                    // obsolete commands for compatibility
 451                                    {"markauto", &DoMarkAuto},
 452                                    {"unmarkauto", &DoMarkAuto},
 453                                    {0,0}};
 454
 455    std::vector<CommandLine::Args> Args = getCommandArgs("apt-mark", CommandLine::GetCommand(Cmds, argc, argv));
 456
 457    // Set up gettext support
 458    setlocale(LC_ALL,"");
 459    textdomain(PACKAGE);
 460
 461    CommandLine CmdL;
 462    ParseCommandLine(CmdL, Cmds, Args.data(), &_config, &_system, argc, argv, ShowHelp);
 463
 464    InitOutput();
 465
 466    // Match the operation
 467    CmdL.DispatchArg(Cmds);
 468
 469    // Print any errors or warnings found during parsing
 470    bool const Errors = _error->PendingError();
 471    if (_config->FindI("quiet",0) > 0)
 472       _error->DumpErrors();
 473    else
 474       _error->DumpErrors(GlobalError::DEBUG);
 475    return Errors == true ? 100 : 0;
 476 }
 477                                                                         /*}}}*/