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