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    // Generate the base argument list for dpkg
 178    std::vector<const char *> Args;
 179    string Tmp = _config->Find("Dir::Bin::dpkg","dpkg");
 180    {
 181       string const dpkgChrootDir = _config->FindDir("DPkg::Chroot-Directory", "/");
 182       size_t dpkgChrootLen = dpkgChrootDir.length();
 183       if (dpkgChrootDir != "/" && Tmp.find(dpkgChrootDir) == 0)
 184       {
 185          if (dpkgChrootDir[dpkgChrootLen - 1] == '/')
 186             --dpkgChrootLen;
 187          Tmp = Tmp.substr(dpkgChrootLen);
 188       }
 189    }
 190    Args.push_back(Tmp.c_str());
 191
 192    // Stick in any custom dpkg options
 193    Configuration::Item const *Opts = _config->Tree("DPkg::Options");
 194    if (Opts != 0)
 195    {
 196       Opts = Opts->Child;
 197       for (; Opts != 0; Opts = Opts->Next)
 198       {
 199          if (Opts->Value.empty() == true)
 200             continue;
 201          Args.push_back(Opts->Value.c_str());
 202       }
 203    }
 204
 205    size_t const BaseArgs = Args.size();
 206    // we need to detect if we can qualify packages with the architecture or not
 207    Args.push_back("--assert-multi-arch");
 208    Args.push_back(NULL);
 209
 210
 211    pid_t dpkgAssertMultiArch = ExecFork();
 212    if (dpkgAssertMultiArch == 0)
 213    {
 214       std::string const chrootDir = _config->FindDir("DPkg::Chroot-Directory");
 215       // redirect everything to the ultimate sink as we only need the exit-status
 216       int const nullfd = open("/dev/null", O_RDONLY);
 217       dup2(nullfd, STDIN_FILENO);
 218       dup2(nullfd, STDOUT_FILENO);
 219       dup2(nullfd, STDERR_FILENO);
 220       if (chrootDir != "/" && chroot(chrootDir.c_str()) != 0 && chdir("/") != 0)
 221          _error->WarningE("getArchitecture", "Couldn't chroot into %s for dpkg --assert-multi-arch", chrootDir.c_str());
 222       execvp(Args[0], (char**) &Args[0]);
 223       _error->WarningE("dpkgGo", "Can't detect if dpkg supports multi-arch!");
 224       _exit(2);
 225    }
 226
 227    APT::PackageList pkgset = APT::PackageList::FromCommandLine(CacheFile, CmdL.FileList + 1);
 228    if (pkgset.empty() == true)
 229       return _error->Error(_("No packages found"));
 230
 231    bool const MarkHold = strcasecmp(CmdL.FileList[0],"hold") == 0;
 232
 233    for (APT::PackageList::iterator Pkg = pkgset.begin(); Pkg != pkgset.end();)
 234    {
 235       if ((Pkg->SelectedState == pkgCache::State::Hold) == MarkHold)
 236       {
 237          if (MarkHold == true)
 238             ioprintf(c1out,_("%s was already set on hold.\n"), Pkg.FullName(true).c_str());
 239          else
 240             ioprintf(c1out,_("%s was already not hold.\n"), Pkg.FullName(true).c_str());
 241          Pkg = pkgset.erase(Pkg);
 242       }
 243       else
 244          ++Pkg;
 245    }
 246
 247    bool dpkgMultiArch = false;
 248    if (dpkgAssertMultiArch > 0)
 249    {
 250       int Status = 0;
 251       while (waitpid(dpkgAssertMultiArch, &Status, 0) != dpkgAssertMultiArch)
 252       {
 253          if (errno == EINTR)
 254             continue;
 255          _error->WarningE("dpkgGo", _("Waited for %s but it wasn't there"), "dpkg --assert-multi-arch");
 256          break;
 257       }
 258       if (WIFEXITED(Status) == true && WEXITSTATUS(Status) == 0)
 259          dpkgMultiArch = true;
 260    }
 261
 262    if (pkgset.empty() == true)
 263       return true;
 264
 265    if (_config->FindB("APT::Mark::Simulate", false) == true)
 266    {
 267       for (APT::PackageList::iterator Pkg = pkgset.begin(); Pkg != pkgset.end(); ++Pkg)
 268       {
 269          if (MarkHold == false)
 270             ioprintf(c1out,_("%s set on hold.\n"), Pkg.FullName(true).c_str());
 271          else
 272             ioprintf(c1out,_("Canceled hold on %s.\n"), Pkg.FullName(true).c_str());
 273       }
 274       return true;
 275    }
 276
 277    APT::PackageList keepoffset;
 278    for (APT::PackageList::iterator Pkg = pkgset.begin(); Pkg != pkgset.end(); ++Pkg)
 279    {
 280       if (Pkg->CurrentVer != 0)
 281          continue;
 282       keepoffset.insert(*Pkg);
 283    }
 284
 285    if (keepoffset.empty() == false)
 286    {
 287       Args.erase(Args.begin() + BaseArgs, Args.end());
 288       Args.push_back("--merge-avail");
 289       // FIXME: supported only since 1.17.7 in dpkg
 290       Args.push_back("-");
 291       Args.push_back(NULL);
 292
 293       int external[2] = {-1, -1};
 294       if (pipe(external) != 0)
 295          return _error->WarningE("DoHold", "Can't create IPC pipe for dpkg --merge-avail");
 296
 297       pid_t dpkgMergeAvail = ExecFork();
 298       if (dpkgMergeAvail == 0)
 299       {
 300          close(external[1]);
 301          std::string const chrootDir = _config->FindDir("DPkg::Chroot-Directory");
 302          if (chrootDir != "/" && chroot(chrootDir.c_str()) != 0 && chdir("/") != 0)
 303             _error->WarningE("getArchitecture", "Couldn't chroot into %s for dpkg --merge-avail", chrootDir.c_str());
 304          dup2(external[0], STDIN_FILENO);
 305          int const nullfd = open("/dev/null", O_RDONLY);
 306          dup2(nullfd, STDOUT_FILENO);
 307          execvp(Args[0], (char**) &Args[0]);
 308          _error->WarningE("dpkgGo", "Can't get dpkg --merge-avail running!");
 309          _exit(2);
 310       }
 311
 312       FILE* dpkg = fdopen(external[1], "w");
 313       for (APT::PackageList::iterator Pkg = keepoffset.begin(); Pkg != keepoffset.end(); ++Pkg)
 314       {
 315          char const * Arch;
 316          if (Pkg->VersionList != 0)
 317             Arch = Pkg.VersionList().Arch();
 318          else
 319             Arch = Pkg.Arch();
 320          fprintf(dpkg, "Package: %s\nVersion: 0~\nArchitecture: %s\nMaintainer: Dummy Example <dummy@example.org>\n"
 321                "Description: dummy package record\n A record is needed to put a package on hold, so here it is.\n\n", Pkg.Name(), Arch);
 322       }
 323       fclose(dpkg);
 324       keepoffset.clear();
 325
 326       if (dpkgMergeAvail > 0)
 327       {
 328          int Status = 0;
 329          while (waitpid(dpkgMergeAvail, &Status, 0) != dpkgMergeAvail)
 330          {
 331             if (errno == EINTR)
 332                continue;
 333             _error->WarningE("dpkgGo", _("Waited for %s but it wasn't there"), "dpkg --merge-avail");
 334             break;
 335          }
 336          if (WIFEXITED(Status) == false || WEXITSTATUS(Status) != 0)
 337             return _error->Error(_("Executing dpkg failed. Are you root?"));
 338       }
 339    }
 340
 341    Args.erase(Args.begin() + BaseArgs, Args.end());
 342    Args.push_back("--set-selections");
 343    Args.push_back(NULL);
 344
 345    int external[2] = {-1, -1};
 346    if (pipe(external) != 0)
 347       return _error->WarningE("DoHold", "Can't create IPC pipe for dpkg --set-selections");
 348
 349    pid_t dpkgSelection = ExecFork();
 350    if (dpkgSelection == 0)
 351    {
 352       close(external[1]);
 353       std::string const chrootDir = _config->FindDir("DPkg::Chroot-Directory");
 354       if (chrootDir != "/" && chroot(chrootDir.c_str()) != 0 && chdir("/") != 0)
 355          _error->WarningE("getArchitecture", "Couldn't chroot into %s for dpkg --set-selections", chrootDir.c_str());
 356       dup2(external[0], STDIN_FILENO);
 357       execvp(Args[0], (char**) &Args[0]);
 358       _error->WarningE("dpkgGo", "Can't get dpkg --set-selections running!");
 359       _exit(2);
 360    }
 361
 362    FILE* dpkg = fdopen(external[1], "w");
 363    for (APT::PackageList::iterator Pkg = pkgset.begin(); Pkg != pkgset.end(); ++Pkg)
 364    {
 365       if (dpkgMultiArch == false)
 366          fprintf(dpkg, "%s", Pkg.FullName(true).c_str());
 367       else
 368       {
 369          if (Pkg->CurrentVer != 0)
 370             fprintf(dpkg, "%s:%s", Pkg.Name(), Pkg.CurrentVer().Arch());
 371          else if (Pkg.VersionList().end() == false)
 372             fprintf(dpkg, "%s:%s", Pkg.Name(), Pkg.VersionList().Arch());
 373          else
 374             fprintf(dpkg, "%s", Pkg.FullName(false).c_str());
 375       }
 376
 377       if (MarkHold == true)
 378       {
 379          fprintf(dpkg, " hold\n");
 380          ioprintf(c1out,_("%s set on hold.\n"), Pkg.FullName(true).c_str());
 381       }
 382       else
 383       {
 384          fprintf(dpkg, " install\n");
 385          ioprintf(c1out,_("Canceled hold on %s.\n"), Pkg.FullName(true).c_str());
 386       }
 387    }
 388    fclose(dpkg);
 389
 390    if (dpkgSelection > 0)
 391    {
 392       int Status = 0;
 393       while (waitpid(dpkgSelection, &Status, 0) != dpkgSelection)
 394       {
 395          if (errno == EINTR)
 396             continue;
 397          _error->WarningE("dpkgGo", _("Waited for %s but it wasn't there"), "dpkg --set-selection");
 398          break;
 399       }
 400       if (WIFEXITED(Status) == true && WEXITSTATUS(Status) == 0)
 401          return true;
 402    }
 403    return _error->Error(_("Executing dpkg failed. Are you root?"));
 404 }
 405                                                                         /*}}}*/
 406 /* ShowHold - show packages set on hold in dpkg status                  {{{*/
 407 static bool ShowHold(CommandLine &CmdL)
 408 {
 409    pkgCacheFile CacheFile;
 410    pkgCache *Cache = CacheFile.GetPkgCache();
 411    if (unlikely(Cache == NULL))
 412       return false;
 413
 414    std::vector<string> packages;
 415
 416    if (CmdL.FileList[1] == 0)
 417    {
 418       packages.reserve(50); // how many holds are realistic? I hope just a few…
 419       for (pkgCache::PkgIterator P = Cache->PkgBegin(); P.end() == false; ++P)
 420          if (P->SelectedState == pkgCache::State::Hold)
 421             packages.push_back(P.FullName(true));
 422    }
 423    else
 424    {
 425       APT::CacheSetHelper helper(false); // do not show errors
 426       APT::PackageSet pkgset = APT::PackageSet::FromCommandLine(CacheFile, CmdL.FileList + 1, helper);
 427       packages.reserve(pkgset.size());
 428       for (APT::PackageSet::const_iterator P = pkgset.begin(); P != pkgset.end(); ++P)
 429          if (P->SelectedState == pkgCache::State::Hold)
 430             packages.push_back(P.FullName(true));
 431    }
 432
 433    std::sort(packages.begin(), packages.end());
 434
 435    for (vector<string>::const_iterator I = packages.begin(); I != packages.end(); ++I)
 436       std::cout << *I << std::endl;
 437
 438    return true;
 439 }
 440                                                                         /*}}}*/
 441 // ShowHelp - Show a help screen                                        /*{{{*/
 442 // ---------------------------------------------------------------------
 443 /* */
 444 static bool ShowHelp(CommandLine &)
 445 {
 446    ioprintf(std::cout, "%s %s (%s)\n", PACKAGE, PACKAGE_VERSION, COMMON_ARCH);
 447
 448    cout <<
 449     _("Usage: apt-mark [options] {auto|manual} pkg1 [pkg2 ...]\n"
 450       "\n"
 451       "apt-mark is a simple command line interface for marking packages\n"
 452       "as manually or automatically installed. It can also list marks.\n"
 453       "\n"
 454       "Commands:\n"
 455       "   auto - Mark the given packages as automatically installed\n"
 456       "   manual - Mark the given packages as manually installed\n"
 457       "   hold - Mark a package as held back\n"
 458       "   unhold - Unset a package set as held back\n"
 459       "   showauto - Print the list of automatically installed packages\n"
 460       "   showmanual - Print the list of manually installed packages\n"
 461       "   showhold - Print the list of package on hold\n"
 462       "\n"
 463       "Options:\n"
 464       "  -h  This help text.\n"
 465       "  -q  Loggable output - no progress indicator\n"
 466       "  -qq No output except for errors\n"
 467       "  -s  No-act. Just prints what would be done.\n"
 468       "  -f  read/write auto/manual marking in the given file\n"
 469       "  -c=? Read this configuration file\n"
 470       "  -o=? Set an arbitrary configuration option, eg -o dir::cache=/tmp\n"
 471       "See the apt-mark(8) and apt.conf(5) manual pages for more information.")
 472       << std::endl;
 473    return true;
 474 }
 475                                                                         /*}}}*/
 476 int main(int argc,const char *argv[])                                   /*{{{*/
 477 {
 478    CommandLine::Dispatch Cmds[] = {{"help",&ShowHelp},
 479                                    {"auto",&DoAuto},
 480                                    {"manual",&DoAuto},
 481                                    {"hold",&DoHold},
 482                                    {"unhold",&DoHold},
 483                                    {"showauto",&ShowAuto},
 484                                    {"showmanual",&ShowAuto},
 485                                    {"showhold",&ShowHold},
 486                                    // be nice and forgive the typo
 487                                    {"showholds",&ShowHold},
 488                                    // be nice and forgive it as it is technical right
 489                                    {"install",&DoHold},
 490                                    // obsolete commands for compatibility
 491                                    {"markauto", &DoMarkAuto},
 492                                    {"unmarkauto", &DoMarkAuto},
 493                                    {0,0}};
 494
 495    std::vector<CommandLine::Args> Args = getCommandArgs("apt-mark", CommandLine::GetCommand(Cmds, argc, argv));
 496
 497    // Set up gettext support
 498    setlocale(LC_ALL,"");
 499    textdomain(PACKAGE);
 500
 501    CommandLine CmdL;
 502    ParseCommandLine(CmdL, Cmds, Args.data(), &_config, &_system, argc, argv, ShowHelp);
 503
 504    InitOutput();
 505
 506    // Match the operation
 507    CmdL.DispatchArg(Cmds);
 508
 509    // Print any errors or warnings found during parsing
 510    bool const Errors = _error->PendingError();
 511    if (_config->FindI("quiet",0) > 0)
 512       _error->DumpErrors();
 513    else
 514       _error->DumpErrors(GlobalError::DEBUG);
 515    return Errors == true ? 100 : 0;
 516 }
 517                                                                         /*}}}*/