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 part = std::stable_partition(pkgset.begin(), pkgset.end(),
 184         [](pkgCache::PkgIterator const &P) { return P->SelectedState == pkgCache::State::Hold; });
 185
 186    auto doneBegin = MarkHold ? pkgset.begin() : part;
 187    auto doneEnd = MarkHold ? part : pkgset.end();
 188    auto changeBegin = MarkHold ? part : pkgset.begin();
 189    auto 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    for (APT::PackageList::iterator Pkg = pkgset.begin(); Pkg != pkgset.end(); ++Pkg)
 242    {
 243       if (Pkg->CurrentVer != 0)
 244          continue;
 245       keepoffset.insert(*Pkg);
 246    }
 247
 248    if (keepoffset.empty() == false)
 249    {
 250       size_t const BaseArgs = Args.size();
 251       Args.push_back("--merge-avail");
 252       // FIXME: supported only since 1.17.7 in dpkg
 253       Args.push_back("-");
 254       Args.push_back(NULL);
 255
 256       int external[2] = {-1, -1};
 257       if (pipe(external) != 0)
 258          return _error->WarningE("DoHold", "Can't create IPC pipe for dpkg --merge-avail");
 259
 260       pid_t dpkgMergeAvail = ExecFork();
 261       if (dpkgMergeAvail == 0)
 262       {
 263          close(external[1]);
 264          std::string const chrootDir = _config->FindDir("DPkg::Chroot-Directory");
 265          if (chrootDir != "/" && chroot(chrootDir.c_str()) != 0 && chdir("/") != 0)
 266             _error->WarningE("getArchitecture", "Couldn't chroot into %s for dpkg --merge-avail", chrootDir.c_str());
 267          dup2(external[0], STDIN_FILENO);
 268          int const nullfd = open("/dev/null", O_RDONLY);
 269          dup2(nullfd, STDOUT_FILENO);
 270          execvp(Args[0], (char**) &Args[0]);
 271          _error->WarningE("dpkgGo", "Can't get dpkg --merge-avail running!");
 272          _exit(2);
 273       }
 274
 275       FILE* dpkg = fdopen(external[1], "w");
 276       for (APT::PackageList::iterator Pkg = keepoffset.begin(); Pkg != keepoffset.end(); ++Pkg)
 277       {
 278          char const * Arch;
 279          if (Pkg->VersionList != 0)
 280             Arch = Pkg.VersionList().Arch();
 281          else
 282             Arch = Pkg.Arch();
 283          fprintf(dpkg, "Package: %s\nVersion: 0~\nArchitecture: %s\nMaintainer: Dummy Example <dummy@example.org>\n"
 284                "Description: dummy package record\n A record is needed to put a package on hold, so here it is.\n\n", Pkg.Name(), Arch);
 285       }
 286       fclose(dpkg);
 287       keepoffset.clear();
 288
 289       if (dpkgMergeAvail > 0)
 290       {
 291          int Status = 0;
 292          while (waitpid(dpkgMergeAvail, &Status, 0) != dpkgMergeAvail)
 293          {
 294             if (errno == EINTR)
 295                continue;
 296             _error->WarningE("dpkgGo", _("Waited for %s but it wasn't there"), "dpkg --merge-avail");
 297             break;
 298          }
 299          if (WIFEXITED(Status) == false || WEXITSTATUS(Status) != 0)
 300             return _error->Error(_("Executing dpkg failed. Are you root?"));
 301       }
 302       Args.erase(Args.begin() + BaseArgs, Args.end());
 303    }
 304
 305    Args.push_back("--set-selections");
 306    Args.push_back(NULL);
 307
 308    int external[2] = {-1, -1};
 309    if (pipe(external) != 0)
 310       return _error->WarningE("DoHold", "Can't create IPC pipe for dpkg --set-selections");
 311
 312    pid_t dpkgSelection = ExecFork();
 313    if (dpkgSelection == 0)
 314    {
 315       close(external[1]);
 316       std::string const chrootDir = _config->FindDir("DPkg::Chroot-Directory");
 317       if (chrootDir != "/" && chroot(chrootDir.c_str()) != 0 && chdir("/") != 0)
 318          _error->WarningE("getArchitecture", "Couldn't chroot into %s for dpkg --set-selections", chrootDir.c_str());
 319       dup2(external[0], STDIN_FILENO);
 320       execvp(Args[0], (char**) &Args[0]);
 321       _error->WarningE("dpkgGo", "Can't get dpkg --set-selections running!");
 322       _exit(2);
 323    }
 324
 325    bool const dpkgMultiArch = _system->MultiArchSupported();
 326    FILE* dpkg = fdopen(external[1], "w");
 327    for (auto Pkg = changeBegin; Pkg != changeEnd; ++Pkg)
 328    {
 329       if (dpkgMultiArch == false)
 330          fprintf(dpkg, "%s", Pkg.FullName(true).c_str());
 331       else
 332       {
 333          if (Pkg->CurrentVer != 0)
 334             fprintf(dpkg, "%s:%s", Pkg.Name(), Pkg.CurrentVer().Arch());
 335          else if (Pkg.VersionList().end() == false)
 336             fprintf(dpkg, "%s:%s", Pkg.Name(), Pkg.VersionList().Arch());
 337          else
 338             fprintf(dpkg, "%s", Pkg.FullName(false).c_str());
 339       }
 340
 341       if (MarkHold == true)
 342       {
 343          fprintf(dpkg, " hold\n");
 344          ioprintf(c1out,_("%s set on hold.\n"), Pkg.FullName(true).c_str());
 345       }
 346       else
 347       {
 348          fprintf(dpkg, " install\n");
 349          ioprintf(c1out,_("Canceled hold on %s.\n"), Pkg.FullName(true).c_str());
 350       }
 351    }
 352    fclose(dpkg);
 353
 354    if (dpkgSelection > 0)
 355    {
 356       int Status = 0;
 357       while (waitpid(dpkgSelection, &Status, 0) != dpkgSelection)
 358       {
 359          if (errno == EINTR)
 360             continue;
 361          _error->WarningE("dpkgGo", _("Waited for %s but it wasn't there"), "dpkg --set-selection");
 362          break;
 363       }
 364       if (WIFEXITED(Status) == true && WEXITSTATUS(Status) == 0)
 365          return true;
 366    }
 367    return _error->Error(_("Executing dpkg failed. Are you root?"));
 368 }
 369                                                                         /*}}}*/
 370 /* ShowHold - show packages set on hold in dpkg status                  {{{*/
 371 static bool ShowHold(CommandLine &CmdL)
 372 {
 373    pkgCacheFile CacheFile;
 374    pkgCache *Cache = CacheFile.GetPkgCache();
 375    if (unlikely(Cache == NULL))
 376       return false;
 377
 378    std::vector<string> packages;
 379
 380    if (CmdL.FileList[1] == 0)
 381    {
 382       packages.reserve(50); // how many holds are realistic? I hope just a few…
 383       for (pkgCache::PkgIterator P = Cache->PkgBegin(); P.end() == false; ++P)
 384          if (P->SelectedState == pkgCache::State::Hold)
 385             packages.push_back(P.FullName(true));
 386    }
 387    else
 388    {
 389       APT::CacheSetHelper helper(false); // do not show errors
 390       APT::PackageSet pkgset = APT::PackageSet::FromCommandLine(CacheFile, CmdL.FileList + 1, helper);
 391       packages.reserve(pkgset.size());
 392       for (APT::PackageSet::const_iterator P = pkgset.begin(); P != pkgset.end(); ++P)
 393          if (P->SelectedState == pkgCache::State::Hold)
 394             packages.push_back(P.FullName(true));
 395    }
 396
 397    std::sort(packages.begin(), packages.end());
 398
 399    for (vector<string>::const_iterator I = packages.begin(); I != packages.end(); ++I)
 400       std::cout << *I << std::endl;
 401
 402    return true;
 403 }
 404                                                                         /*}}}*/
 405 // ShowHelp - Show a help screen                                        /*{{{*/
 406 // ---------------------------------------------------------------------
 407 /* */
 408 static bool ShowHelp(CommandLine &)
 409 {
 410    ioprintf(std::cout, "%s %s (%s)\n", PACKAGE, PACKAGE_VERSION, COMMON_ARCH);
 411
 412    cout <<
 413     _("Usage: apt-mark [options] {auto|manual} pkg1 [pkg2 ...]\n"
 414       "\n"
 415       "apt-mark is a simple command line interface for marking packages\n"
 416       "as manually or automatically installed. It can also list marks.\n"
 417       "\n"
 418       "Commands:\n"
 419       "   auto - Mark the given packages as automatically installed\n"
 420       "   manual - Mark the given packages as manually installed\n"
 421       "   hold - Mark a package as held back\n"
 422       "   unhold - Unset a package set as held back\n"
 423       "   showauto - Print the list of automatically installed packages\n"
 424       "   showmanual - Print the list of manually installed packages\n"
 425       "   showhold - Print the list of package on hold\n"
 426       "\n"
 427       "Options:\n"
 428       "  -h  This help text.\n"
 429       "  -q  Loggable output - no progress indicator\n"
 430       "  -qq No output except for errors\n"
 431       "  -s  No-act. Just prints what would be done.\n"
 432       "  -f  read/write auto/manual marking in the given file\n"
 433       "  -c=? Read this configuration file\n"
 434       "  -o=? Set an arbitrary configuration option, eg -o dir::cache=/tmp\n"
 435       "See the apt-mark(8) and apt.conf(5) manual pages for more information.")
 436       << std::endl;
 437    return true;
 438 }
 439                                                                         /*}}}*/
 440 int main(int argc,const char *argv[])                                   /*{{{*/
 441 {
 442    CommandLine::Dispatch Cmds[] = {{"help",&ShowHelp},
 443                                    {"auto",&DoAuto},
 444                                    {"manual",&DoAuto},
 445                                    {"hold",&DoHold},
 446                                    {"unhold",&DoHold},
 447                                    {"showauto",&ShowAuto},
 448                                    {"showmanual",&ShowAuto},
 449                                    {"showhold",&ShowHold},
 450                                    // be nice and forgive the typo
 451                                    {"showholds",&ShowHold},
 452                                    // be nice and forgive it as it is technical right
 453                                    {"install",&DoHold},
 454                                    // obsolete commands for compatibility
 455                                    {"markauto", &DoMarkAuto},
 456                                    {"unmarkauto", &DoMarkAuto},
 457                                    {0,0}};
 458
 459    std::vector<CommandLine::Args> Args = getCommandArgs("apt-mark", CommandLine::GetCommand(Cmds, argc, argv));
 460
 461    // Set up gettext support
 462    setlocale(LC_ALL,"");
 463    textdomain(PACKAGE);
 464
 465    CommandLine CmdL;
 466    ParseCommandLine(CmdL, Cmds, Args.data(), &_config, &_system, argc, argv, ShowHelp);
 467
 468    InitOutput();
 469
 470    // Match the operation
 471    CmdL.DispatchArg(Cmds);
 472
 473    // Print any errors or warnings found during parsing
 474    bool const Errors = _error->PendingError();
 475    if (_config->FindI("quiet",0) > 0)
 476       _error->DumpErrors();
 477    else
 478       _error->DumpErrors(GlobalError::DEBUG);
 479    return Errors == true ? 100 : 0;
 480 }
 481                                                                         /*}}}*/