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/init.h>
  15 #include <apt-pkg/strutl.h>
  16 #include <apt-pkg/pkgsystem.h>
  17 #include <apt-pkg/fileutl.h>
  18
  19 #include <algorithm>
  20 #include <errno.h>
  21 #include <unistd.h>
  22 #include <sys/types.h>
  23 #include <sys/stat.h>
  24 #include <sys/wait.h>
  25 #include <fcntl.h>
  26
  27 #include <apt-private/private-cmndline.h>
  28
  29 #include <apti18n.h>
  30                                                                         /*}}}*/
  31 using namespace std;
  32
  33 ostream c0out(0);
  34 ostream c1out(0);
  35 ostream c2out(0);
  36 ofstream devnull("/dev/null");
  37 /* DoAuto - mark packages as automatically/manually installed           {{{*/
  38 static bool DoAuto(CommandLine &CmdL)
  39 {
  40    pkgCacheFile CacheFile;
  41    pkgCache *Cache = CacheFile.GetPkgCache();
  42    pkgDepCache *DepCache = CacheFile.GetDepCache();
  43    if (unlikely(Cache == NULL || DepCache == NULL))
  44       return false;
  45
  46    APT::PackageList pkgset = APT::PackageList::FromCommandLine(CacheFile, CmdL.FileList + 1);
  47    if (pkgset.empty() == true)
  48       return _error->Error(_("No packages found"));
  49
  50    bool MarkAuto = strcasecmp(CmdL.FileList[0],"auto") == 0;
  51    int AutoMarkChanged = 0;
  52
  53    for (APT::PackageList::const_iterator Pkg = pkgset.begin(); Pkg != pkgset.end(); ++Pkg)
  54    {
  55       if (Pkg->CurrentVer == 0)
  56       {
  57          ioprintf(c1out,_("%s can not be marked as it is not installed.\n"), Pkg.FullName(true).c_str());
  58          continue;
  59       }
  60       else if ((((*DepCache)[Pkg].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto) == MarkAuto)
  61       {
  62          if (MarkAuto == false)
  63             ioprintf(c1out,_("%s was already set to manually installed.\n"), Pkg.FullName(true).c_str());
  64          else
  65             ioprintf(c1out,_("%s was already set to automatically installed.\n"), Pkg.FullName(true).c_str());
  66          continue;
  67       }
  68
  69       if (MarkAuto == false)
  70          ioprintf(c1out,_("%s set to manually installed.\n"), Pkg.FullName(true).c_str());
  71       else
  72          ioprintf(c1out,_("%s set to automatically installed.\n"), Pkg.FullName(true).c_str());
  73
  74       DepCache->MarkAuto(Pkg, MarkAuto);
  75       ++AutoMarkChanged;
  76    }
  77    if (AutoMarkChanged > 0 && _config->FindB("APT::Mark::Simulate", false) == false)
  78       return DepCache->writeStateFile(NULL);
  79    return true;
  80 }
  81                                                                         /*}}}*/
  82 /* DoMarkAuto - mark packages as automatically/manually installed       {{{*/
  83 /* Does the same as DoAuto but tries to do it exactly the same why as
  84    the python implementation did it so it can be a drop-in replacement */
  85 static bool DoMarkAuto(CommandLine &CmdL)
  86 {
  87    pkgCacheFile CacheFile;
  88    pkgCache *Cache = CacheFile.GetPkgCache();
  89    pkgDepCache *DepCache = CacheFile.GetDepCache();
  90    if (unlikely(Cache == NULL || DepCache == NULL))
  91       return false;
  92
  93    APT::PackageList pkgset = APT::PackageList::FromCommandLine(CacheFile, CmdL.FileList + 1);
  94    if (pkgset.empty() == true)
  95       return _error->Error(_("No packages found"));
  96
  97    bool const MarkAuto = strcasecmp(CmdL.FileList[0],"markauto") == 0;
  98    bool const Verbose = _config->FindB("APT::MarkAuto::Verbose", false);
  99    int AutoMarkChanged = 0;
 100
 101    for (APT::PackageList::const_iterator Pkg = pkgset.begin(); Pkg != pkgset.end(); ++Pkg)
 102    {
 103       if (Pkg->CurrentVer == 0 ||
 104           (((*DepCache)[Pkg].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto) == MarkAuto)
 105          continue;
 106
 107       if (Verbose == true)
 108          ioprintf(c1out, "changing %s to %d\n", Pkg.Name(), (MarkAuto == false) ? 0 : 1);
 109
 110       DepCache->MarkAuto(Pkg, MarkAuto);
 111       ++AutoMarkChanged;
 112    }
 113    if (AutoMarkChanged > 0 && _config->FindB("APT::Mark::Simulate", false) == false)
 114       return DepCache->writeStateFile(NULL);
 115
 116    _error->Notice(_("This command is deprecated. Please use 'apt-mark auto' and 'apt-mark manual' instead."));
 117
 118    return true;
 119 }
 120                                                                         /*}}}*/
 121 /* ShowAuto - show automatically installed packages (sorted)            {{{*/
 122 static bool ShowAuto(CommandLine &CmdL)
 123 {
 124    pkgCacheFile CacheFile;
 125    pkgCache *Cache = CacheFile.GetPkgCache();
 126    pkgDepCache *DepCache = CacheFile.GetDepCache();
 127    if (unlikely(Cache == NULL || DepCache == NULL))
 128       return false;
 129
 130    std::vector<string> packages;
 131
 132    bool const ShowAuto = strcasecmp(CmdL.FileList[0],"showauto") == 0;
 133
 134    if (CmdL.FileList[1] == 0)
 135    {
 136       packages.reserve(Cache->HeaderP->PackageCount / 3);
 137       for (pkgCache::PkgIterator P = Cache->PkgBegin(); P.end() == false; ++P)
 138          if (P->CurrentVer != 0 &&
 139              (((*DepCache)[P].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto) == ShowAuto)
 140             packages.push_back(P.FullName(true));
 141    }
 142    else
 143    {
 144       APT::CacheSetHelper helper(false); // do not show errors
 145       APT::PackageSet pkgset = APT::PackageSet::FromCommandLine(CacheFile, CmdL.FileList + 1, helper);
 146       packages.reserve(pkgset.size());
 147       for (APT::PackageSet::const_iterator P = pkgset.begin(); P != pkgset.end(); ++P)
 148          if (P->CurrentVer != 0 &&
 149              (((*DepCache)[P].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto) == ShowAuto)
 150             packages.push_back(P.FullName(true));
 151    }
 152
 153    std::sort(packages.begin(), packages.end());
 154
 155    for (vector<string>::const_iterator I = packages.begin(); I != packages.end(); ++I)
 156       std::cout << *I << std::endl;
 157
 158    return true;
 159 }
 160                                                                         /*}}}*/
 161 /* DoHold - mark packages as hold by dpkg                               {{{*/
 162 static bool DoHold(CommandLine &CmdL)
 163 {
 164    pkgCacheFile CacheFile;
 165    pkgCache *Cache = CacheFile.GetPkgCache();
 166    if (unlikely(Cache == NULL))
 167       return false;
 168
 169    // Generate the base argument list for dpkg
 170    std::vector<const char *> Args;
 171    string Tmp = _config->Find("Dir::Bin::dpkg","dpkg");
 172    {
 173       string const dpkgChrootDir = _config->FindDir("DPkg::Chroot-Directory", "/");
 174       size_t dpkgChrootLen = dpkgChrootDir.length();
 175       if (dpkgChrootDir != "/" && Tmp.find(dpkgChrootDir) == 0)
 176       {
 177          if (dpkgChrootDir[dpkgChrootLen - 1] == '/')
 178             --dpkgChrootLen;
 179          Tmp = Tmp.substr(dpkgChrootLen);
 180       }
 181    }
 182    Args.push_back(Tmp.c_str());
 183
 184    // Stick in any custom dpkg options
 185    Configuration::Item const *Opts = _config->Tree("DPkg::Options");
 186    if (Opts != 0)
 187    {
 188       Opts = Opts->Child;
 189       for (; Opts != 0; Opts = Opts->Next)
 190       {
 191          if (Opts->Value.empty() == true)
 192             continue;
 193          Args.push_back(Opts->Value.c_str());
 194       }
 195    }
 196
 197    size_t const BaseArgs = Args.size();
 198    // we need to detect if we can qualify packages with the architecture or not
 199    Args.push_back("--assert-multi-arch");
 200    Args.push_back(NULL);
 201
 202
 203    pid_t dpkgAssertMultiArch = ExecFork();
 204    if (dpkgAssertMultiArch == 0)
 205    {
 206       std::string const chrootDir = _config->FindDir("DPkg::Chroot-Directory");
 207       // redirect everything to the ultimate sink as we only need the exit-status
 208       int const nullfd = open("/dev/null", O_RDONLY);
 209       dup2(nullfd, STDIN_FILENO);
 210       dup2(nullfd, STDOUT_FILENO);
 211       dup2(nullfd, STDERR_FILENO);
 212       if (chrootDir != "/" && chroot(chrootDir.c_str()) != 0 && chdir("/") != 0)
 213          _error->WarningE("getArchitecture", "Couldn't chroot into %s for dpkg --assert-multi-arch", chrootDir.c_str());
 214       execvp(Args[0], (char**) &Args[0]);
 215       _error->WarningE("dpkgGo", "Can't detect if dpkg supports multi-arch!");
 216       _exit(2);
 217    }
 218
 219    APT::PackageList pkgset = APT::PackageList::FromCommandLine(CacheFile, CmdL.FileList + 1);
 220    if (pkgset.empty() == true)
 221       return _error->Error(_("No packages found"));
 222
 223    bool const MarkHold = strcasecmp(CmdL.FileList[0],"hold") == 0;
 224
 225    for (APT::PackageList::iterator Pkg = pkgset.begin(); Pkg != pkgset.end();)
 226    {
 227       if ((Pkg->SelectedState == pkgCache::State::Hold) == MarkHold)
 228       {
 229          if (MarkHold == true)
 230             ioprintf(c1out,_("%s was already set on hold.\n"), Pkg.FullName(true).c_str());
 231          else
 232             ioprintf(c1out,_("%s was already not hold.\n"), Pkg.FullName(true).c_str());
 233          Pkg = pkgset.erase(Pkg, true);
 234       }
 235       else
 236          ++Pkg;
 237    }
 238
 239    bool dpkgMultiArch = false;
 240    if (dpkgAssertMultiArch > 0)
 241    {
 242       int Status = 0;
 243       while (waitpid(dpkgAssertMultiArch, &Status, 0) != dpkgAssertMultiArch)
 244       {
 245          if (errno == EINTR)
 246             continue;
 247          _error->WarningE("dpkgGo", _("Waited for %s but it wasn't there"), "dpkg --assert-multi-arch");
 248          break;
 249       }
 250       if (WIFEXITED(Status) == true && WEXITSTATUS(Status) == 0)
 251          dpkgMultiArch = true;
 252    }
 253
 254    if (pkgset.empty() == true)
 255       return true;
 256
 257    if (_config->FindB("APT::Mark::Simulate", false) == true)
 258    {
 259       for (APT::PackageList::iterator Pkg = pkgset.begin(); Pkg != pkgset.end(); ++Pkg)
 260       {
 261          if (MarkHold == false)
 262             ioprintf(c1out,_("%s set on hold.\n"), Pkg.FullName(true).c_str());
 263          else
 264             ioprintf(c1out,_("Canceled hold on %s.\n"), Pkg.FullName(true).c_str());
 265       }
 266       return true;
 267    }
 268
 269    Args.erase(Args.begin() + BaseArgs, Args.end());
 270    Args.push_back("--set-selections");
 271    Args.push_back(NULL);
 272
 273    int external[2] = {-1, -1};
 274    if (pipe(external) != 0)
 275       return _error->WarningE("DoHold", "Can't create IPC pipe for dpkg --set-selections");
 276
 277    pid_t dpkgSelection = ExecFork();
 278    if (dpkgSelection == 0)
 279    {
 280       close(external[1]);
 281       std::string const chrootDir = _config->FindDir("DPkg::Chroot-Directory");
 282       if (chrootDir != "/" && chroot(chrootDir.c_str()) != 0 && chdir("/") != 0)
 283          _error->WarningE("getArchitecture", "Couldn't chroot into %s for dpkg --set-selections", chrootDir.c_str());
 284       int const nullfd = open("/dev/null", O_RDONLY);
 285       dup2(external[0], STDIN_FILENO);
 286       dup2(nullfd, STDOUT_FILENO);
 287       dup2(nullfd, STDERR_FILENO);
 288       execvp(Args[0], (char**) &Args[0]);
 289       _error->WarningE("dpkgGo", "Can't detect if dpkg supports multi-arch!");
 290       _exit(2);
 291    }
 292
 293    FILE* dpkg = fdopen(external[1], "w");
 294    for (APT::PackageList::iterator Pkg = pkgset.begin(); Pkg != pkgset.end(); ++Pkg)
 295    {
 296       if (dpkgMultiArch == false)
 297          fprintf(dpkg, "%s", Pkg.FullName(true).c_str());
 298       else
 299       {
 300          if (Pkg->CurrentVer != 0)
 301             fprintf(dpkg, "%s:%s", Pkg.Name(), Pkg.CurrentVer().Arch());
 302          else if (Pkg.VersionList().end() == false)
 303             fprintf(dpkg, "%s:%s", Pkg.Name(), Pkg.VersionList().Arch());
 304          else
 305             fprintf(dpkg, "%s", Pkg.FullName(false).c_str());
 306       }
 307
 308       if (MarkHold == true)
 309       {
 310          fprintf(dpkg, " hold\n");
 311          ioprintf(c1out,_("%s set on hold.\n"), Pkg.FullName(true).c_str());
 312       }
 313       else
 314       {
 315          fprintf(dpkg, " install\n");
 316          ioprintf(c1out,_("Canceled hold on %s.\n"), Pkg.FullName(true).c_str());
 317       }
 318    }
 319    fclose(dpkg);
 320
 321    if (dpkgSelection > 0)
 322    {
 323       int Status = 0;
 324       while (waitpid(dpkgSelection, &Status, 0) != dpkgSelection)
 325       {
 326          if (errno == EINTR)
 327             continue;
 328          _error->WarningE("dpkgGo", _("Waited for %s but it wasn't there"), "dpkg --set-selection");
 329          break;
 330       }
 331       if (WIFEXITED(Status) == true && WEXITSTATUS(Status) == 0)
 332          return true;
 333    }
 334    return _error->Error(_("Executing dpkg failed. Are you root?"));
 335 }
 336                                                                         /*}}}*/
 337 /* ShowHold - show packages set on hold in dpkg status                  {{{*/
 338 static bool ShowHold(CommandLine &CmdL)
 339 {
 340    pkgCacheFile CacheFile;
 341    pkgCache *Cache = CacheFile.GetPkgCache();
 342    if (unlikely(Cache == NULL))
 343       return false;
 344
 345    std::vector<string> packages;
 346
 347    if (CmdL.FileList[1] == 0)
 348    {
 349       packages.reserve(50); // how many holds are realistic? I hope just a few…
 350       for (pkgCache::PkgIterator P = Cache->PkgBegin(); P.end() == false; ++P)
 351          if (P->SelectedState == pkgCache::State::Hold)
 352             packages.push_back(P.FullName(true));
 353    }
 354    else
 355    {
 356       APT::CacheSetHelper helper(false); // do not show errors
 357       APT::PackageSet pkgset = APT::PackageSet::FromCommandLine(CacheFile, CmdL.FileList + 1, helper);
 358       packages.reserve(pkgset.size());
 359       for (APT::PackageSet::const_iterator P = pkgset.begin(); P != pkgset.end(); ++P)
 360          if (P->SelectedState == pkgCache::State::Hold)
 361             packages.push_back(P.FullName(true));
 362    }
 363
 364    std::sort(packages.begin(), packages.end());
 365
 366    for (vector<string>::const_iterator I = packages.begin(); I != packages.end(); ++I)
 367       std::cout << *I << std::endl;
 368
 369    return true;
 370 }
 371                                                                         /*}}}*/
 372 // ShowHelp - Show a help screen                                        /*{{{*/
 373 // ---------------------------------------------------------------------
 374 /* */
 375 static bool ShowHelp(CommandLine &)
 376 {
 377    ioprintf(cout,_("%s %s for %s compiled on %s %s\n"),PACKAGE,PACKAGE_VERSION,
 378             COMMON_ARCH,__DATE__,__TIME__);
 379
 380    cout <<
 381     _("Usage: apt-mark [options] {auto|manual} pkg1 [pkg2 ...]\n"
 382       "\n"
 383       "apt-mark is a simple command line interface for marking packages\n"
 384       "as manually or automatically installed. It can also list marks.\n"
 385       "\n"
 386       "Commands:\n"
 387       "   auto - Mark the given packages as automatically installed\n"
 388       "   manual - Mark the given packages as manually installed\n"
 389       "   hold - Mark a package as held back\n"
 390       "   unhold - Unset a package set as held back\n"
 391       "   showauto - Print the list of automatically installed packages\n"
 392       "   showmanual - Print the list of manually installed packages\n"
 393       "   showhold - Print the list of package on hold\n"
 394       "\n"
 395       "Options:\n"
 396       "  -h  This help text.\n"
 397       "  -q  Loggable output - no progress indicator\n"
 398       "  -qq No output except for errors\n"
 399       "  -s  No-act. Just prints what would be done.\n"
 400       "  -f  read/write auto/manual marking in the given file\n"
 401       "  -c=? Read this configuration file\n"
 402       "  -o=? Set an arbitrary configuration option, eg -o dir::cache=/tmp\n"
 403       "See the apt-mark(8) and apt.conf(5) manual pages for more information.")
 404       << std::endl;
 405    return true;
 406 }
 407                                                                         /*}}}*/
 408 int main(int argc,const char *argv[])                                   /*{{{*/
 409 {
 410    CommandLine::Dispatch Cmds[] = {{"help",&ShowHelp},
 411                                    {"auto",&DoAuto},
 412                                    {"manual",&DoAuto},
 413                                    {"hold",&DoHold},
 414                                    {"unhold",&DoHold},
 415                                    {"showauto",&ShowAuto},
 416                                    {"showmanual",&ShowAuto},
 417                                    {"showhold",&ShowHold},
 418                                    // be nice and forgive the typo
 419                                    {"showholds",&ShowHold},
 420                                    // be nice and forgive it as it is technical right
 421                                    {"install",&DoHold},
 422                                    // obsolete commands for compatibility
 423                                    {"markauto", &DoMarkAuto},
 424                                    {"unmarkauto", &DoMarkAuto},
 425                                    {0,0}};
 426
 427    std::vector<CommandLine::Args> Args = getCommandArgs("apt-mark", CommandLine::GetCommand(Cmds, argc, argv));
 428
 429    // Set up gettext support
 430    setlocale(LC_ALL,"");
 431    textdomain(PACKAGE);
 432
 433    // Parse the command line and initialize the package library
 434    CommandLine CmdL(Args.data(),_config);
 435    if (pkgInitConfig(*_config) == false ||
 436        CmdL.Parse(argc,argv) == false ||
 437        pkgInitSystem(*_config,_system) == false)
 438    {
 439       if (_config->FindB("version") == true)
 440          ShowHelp(CmdL);
 441       _error->DumpErrors();
 442       return 100;
 443    }
 444
 445    // See if the help should be shown
 446    if (_config->FindB("help") == true ||
 447        _config->FindB("version") == true ||
 448        CmdL.FileSize() == 0)
 449    {
 450       ShowHelp(CmdL);
 451       return 0;
 452    }
 453
 454    // Deal with stdout not being a tty
 455    if (!isatty(STDOUT_FILENO) && _config->FindI("quiet", -1) == -1)
 456       _config->Set("quiet","1");
 457
 458    // Setup the output streams
 459    c0out.rdbuf(cout.rdbuf());
 460    c1out.rdbuf(cout.rdbuf());
 461    c2out.rdbuf(cout.rdbuf());
 462    if (_config->FindI("quiet",0) > 0)
 463       c0out.rdbuf(devnull.rdbuf());
 464    if (_config->FindI("quiet",0) > 1)
 465       c1out.rdbuf(devnull.rdbuf());
 466
 467    // Match the operation
 468    CmdL.DispatchArg(Cmds);
 469
 470    // Print any errors or warnings found during parsing
 471    bool const Errors = _error->PendingError();
 472    if (_config->FindI("quiet",0) > 0)
 473       _error->DumpErrors();
 474    else
 475       _error->DumpErrors(GlobalError::DEBUG);
 476    return Errors == true ? 100 : 0;
 477 }
 478                                                                         /*}}}*/