src/tools/dcpomatic_kdm_cli.cc

   1 /*
   2     Copyright (C) 2013-2018 Carl Hetherington <cth@carlh.net>
   3
   4     This file is part of DCP-o-matic.
   5
   6     DCP-o-matic is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     DCP-o-matic is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 */
  20
  21 /** @file  src/tools/dcpomatic_kdm_cli.cc
  22  *  @brief Command-line program to generate KDMs.
  23  */
  24
  25 #include "lib/film.h"
  26 #include "lib/cinema.h"
  27 #include "lib/kdm_with_metadata.h"
  28 #include "lib/config.h"
  29 #include "lib/exceptions.h"
  30 #include "lib/emailer.h"
  31 #include "lib/dkdm_wrapper.h"
  32 #include "lib/screen.h"
  33 #include <dcp/certificate.h>
  34 #include <dcp/decrypted_kdm.h>
  35 #include <dcp/encrypted_kdm.h>
  36 #include <getopt.h>
  37 #include <iostream>
  38
  39 using std::string;
  40 using std::cout;
  41 using std::cerr;
  42 using std::list;
  43 using std::vector;
  44 using std::runtime_error;
  45 using boost::shared_ptr;
  46 using boost::optional;
  47 using boost::bind;
  48 using boost::dynamic_pointer_cast;
  49 using namespace dcpomatic;
  50
  51 static void
  52 help ()
  53 {
  54         cerr << "Syntax: " << program_name << " [OPTION] <FILM|CPL-ID|DKDM>\n"
  55                 "  -h, --help                               show this help\n"
  56                 "  -o, --output                             output file or directory\n"
  57                 "  -K, --filename-format                    filename format for KDMs\n"
  58                 "  -Z, --container-name-format              filename format for ZIP containers\n"
  59                 "  -f, --valid-from                         valid from time (in local time zone of the cinema) (e.g. \"2013-09-28 01:41:51\") or \"now\"\n"
  60                 "  -t, --valid-to                           valid to time (in local time zone of the cinema) (e.g. \"2014-09-28 01:41:51\")\n"
  61                 "  -d, --valid-duration                     valid duration (e.g. \"1 day\", \"4 hours\", \"2 weeks\")\n"
  62                 "  -F, --formulation                        modified-transitional-1, multiple-modified-transitional-1, dci-any or dci-specific [default modified-transitional-1]\n"
  63                 "  -a, --disable-forensic-marking-picture   disable forensic marking of pictures essences\n"
  64                 "  -a, --disable-forensic-marking-audio     disable forensic marking of audio essences (optionally above a given channel, e.g 12)\n"
  65                 "  -z, --zip                                ZIP each cinema's KDMs into its own file\n"
  66                 "  -v, --verbose                            be verbose\n"
  67                 "  -c, --cinema                             specify a cinema, either by name or email address\n"
  68                 "  -S, --screen                             screen description\n"
  69                 "  -C, --certificate                        file containing projector certificate\n"
  70                 "  -T, --trusted-device                     file containing a trusted device's certificate\n"
  71                 "      --list-cinemas                       list known cinemas from the DCP-o-matic settings\n"
  72                 "      --list-dkdm-cpls                     list CPLs for which DCP-o-matic has DKDMs\n\n"
  73                 "CPL-ID must be the ID of a CPL that is mentioned in DCP-o-matic's DKDM list.\n\n"
  74                 "For example:\n\n"
  75                 "Create KDMs for my_great_movie to play in all of Fred's Cinema's screens for the next two weeks and zip them up.\n"
  76                 "(Fred's Cinema must have been set up in DCP-o-matic's KDM window)\n\n"
  77                 "\t" << program_name << " -c \"Fred's Cinema\" -f now -d \"2 weeks\" -z my_great_movie\n\n";
  78 }
  79
  80 static void
  81 error (string m)
  82 {
  83         cerr << program_name << ": " << m << "\n";
  84         exit (EXIT_FAILURE);
  85 }
  86
  87 static boost::posix_time::ptime
  88 time_from_string (string t)
  89 {
  90         if (t == "now") {
  91                 return boost::posix_time::second_clock::local_time ();
  92         }
  93
  94         return boost::posix_time::time_from_string (t);
  95 }
  96
  97 static boost::posix_time::time_duration
  98 duration_from_string (string d)
  99 {
 100         int N;
 101         char unit_buf[64] = "\0";
 102         sscanf (d.c_str(), "%d %63s", &N, unit_buf);
 103         string const unit (unit_buf);
 104
 105         if (N == 0) {
 106                 cerr << "Could not understand duration \"" << d << "\"\n";
 107                 exit (EXIT_FAILURE);
 108         }
 109
 110         if (unit == "year" || unit == "years") {
 111                 return boost::posix_time::time_duration (N * 24 * 365, 0, 0, 0);
 112         } else if (unit == "week" || unit == "weeks") {
 113                 return boost::posix_time::time_duration (N * 24 * 7, 0, 0, 0);
 114         } else if (unit == "day" || unit == "days") {
 115                 return boost::posix_time::time_duration (N * 24, 0, 0, 0);
 116         } else if (unit == "hour" || unit == "hours") {
 117                 return boost::posix_time::time_duration (N, 0, 0, 0);
 118         }
 119
 120         cerr << "Could not understand duration \"" << d << "\"\n";
 121         exit (EXIT_FAILURE);
 122 }
 123
 124 static bool
 125 always_overwrite ()
 126 {
 127         return true;
 128 }
 129
 130 void
 131 write_files (
 132         list<KDMWithMetadataPtr> kdms,
 133         bool zip,
 134         boost::filesystem::path output,
 135         dcp::NameFormat container_name_format,
 136         dcp::NameFormat filename_format,
 137         bool verbose
 138         )
 139 {
 140         if (zip) {
 141                 int const N = write_zip_files (
 142                         collect (kdms),
 143                         output,
 144                         container_name_format,
 145                         filename_format,
 146                         bind (&always_overwrite)
 147                         );
 148
 149                 if (verbose) {
 150                         cout << "Wrote " << N << " ZIP files to " << output << "\n";
 151                 }
 152         } else {
 153                 int const N = write_files (
 154                         kdms, output, filename_format,
 155                         bind (&always_overwrite)
 156                         );
 157
 158                 if (verbose) {
 159                         cout << "Wrote " << N << " KDM files to " << output << "\n";
 160                 }
 161         }
 162 }
 163
 164 shared_ptr<Cinema>
 165 find_cinema (string cinema_name)
 166 {
 167         list<shared_ptr<Cinema> > cinemas = Config::instance()->cinemas ();
 168         list<shared_ptr<Cinema> >::const_iterator i = cinemas.begin();
 169         while (
 170                 i != cinemas.end() &&
 171                 (*i)->name != cinema_name &&
 172                 find ((*i)->emails.begin(), (*i)->emails.end(), cinema_name) == (*i)->emails.end()) {
 173
 174                 ++i;
 175         }
 176
 177         if (i == cinemas.end ()) {
 178                 cerr << program_name << ": could not find cinema \"" << cinema_name << "\"\n";
 179                 exit (EXIT_FAILURE);
 180         }
 181
 182         return *i;
 183 }
 184
 185 void
 186 from_film (
 187         list<shared_ptr<Screen> > screens,
 188         boost::filesystem::path film_dir,
 189         bool verbose,
 190         boost::filesystem::path output,
 191         dcp::NameFormat container_name_format,
 192         dcp::NameFormat filename_format,
 193         boost::posix_time::ptime valid_from,
 194         boost::posix_time::ptime valid_to,
 195         dcp::Formulation formulation,
 196         bool disable_forensic_marking_picture,
 197         optional<int> disable_forensic_marking_audio,
 198         bool zip
 199         )
 200 {
 201         shared_ptr<Film> film;
 202         try {
 203                 film.reset (new Film (film_dir));
 204                 film->read_metadata ();
 205                 if (verbose) {
 206                         cout << "Read film " << film->name () << "\n";
 207                 }
 208         } catch (std::exception& e) {
 209                 cerr << program_name << ": error reading film `" << film_dir.string() << "' (" << e.what() << ")\n";
 210                 exit (EXIT_FAILURE);
 211         }
 212
 213         /* XXX: allow specification of this */
 214         vector<CPLSummary> cpls = film->cpls ();
 215         if (cpls.empty ()) {
 216                 error ("no CPLs found in film");
 217         } else if (cpls.size() > 1) {
 218                 error ("more than one CPL found in film");
 219         }
 220
 221         boost::filesystem::path cpl = cpls.front().cpl_file;
 222
 223         try {
 224                 list<KDMWithMetadataPtr> kdms;
 225                 BOOST_FOREACH (shared_ptr<Screen> i, screens) {
 226                         KDMWithMetadataPtr p = kdm_for_screen (film, cpl, i, valid_from, valid_to, formulation, disable_forensic_marking_picture, disable_forensic_marking_audio);
 227                         if (p) {
 228                                 kdms.push_back (p);
 229                         }
 230                 }
 231                 write_files (kdms, zip, output, container_name_format, filename_format, verbose);
 232         } catch (FileError& e) {
 233                 cerr << program_name << ": " << e.what() << " (" << e.file().string() << ")\n";
 234                 exit (EXIT_FAILURE);
 235         } catch (KDMError& e) {
 236                 cerr << program_name << ": " << e.what() << "\n";
 237                 exit (EXIT_FAILURE);
 238         } catch (runtime_error& e) {
 239                 cerr << program_name << ": " << e.what() << "\n";
 240                 exit (EXIT_FAILURE);
 241         }
 242 }
 243
 244 optional<dcp::EncryptedKDM>
 245 sub_find_dkdm (shared_ptr<DKDMGroup> group, string cpl_id)
 246 {
 247         BOOST_FOREACH (shared_ptr<DKDMBase> i, group->children()) {
 248                 shared_ptr<DKDMGroup> g = dynamic_pointer_cast<DKDMGroup>(i);
 249                 if (g) {
 250                         optional<dcp::EncryptedKDM> dkdm = sub_find_dkdm (g, cpl_id);
 251                         if (dkdm) {
 252                                 return dkdm;
 253                         }
 254                 } else {
 255                         shared_ptr<DKDM> d = dynamic_pointer_cast<DKDM>(i);
 256                         assert (d);
 257                         if (d->dkdm().cpl_id() == cpl_id) {
 258                                 return d->dkdm();
 259                         }
 260                 }
 261         }
 262
 263         return optional<dcp::EncryptedKDM>();
 264 }
 265
 266 optional<dcp::EncryptedKDM>
 267 find_dkdm (string cpl_id)
 268 {
 269         return sub_find_dkdm (Config::instance()->dkdms(), cpl_id);
 270 }
 271
 272 dcp::EncryptedKDM
 273 kdm_from_dkdm (
 274         dcp::DecryptedKDM dkdm,
 275         dcp::Certificate target,
 276         vector<string> trusted_devices,
 277         dcp::LocalTime valid_from,
 278         dcp::LocalTime valid_to,
 279         dcp::Formulation formulation,
 280         bool disable_forensic_marking_picture,
 281         optional<int> disable_forensic_marking_audio
 282         )
 283 {
 284         /* Signer for new KDM */
 285         shared_ptr<const dcp::CertificateChain> signer = Config::instance()->signer_chain ();
 286         if (!signer->valid ()) {
 287                 error ("signing certificate chain is invalid.");
 288         }
 289
 290         /* Make a new empty KDM and add the keys from the DKDM to it */
 291         dcp::DecryptedKDM kdm (
 292                 valid_from,
 293                 valid_to,
 294                 dkdm.annotation_text().get_value_or(""),
 295                 dkdm.content_title_text(),
 296                 dcp::LocalTime().as_string()
 297                 );
 298
 299         BOOST_FOREACH (dcp::DecryptedKDMKey const & j, dkdm.keys()) {
 300                 kdm.add_key(j);
 301         }
 302
 303         return kdm.encrypt (signer, target, trusted_devices, formulation, disable_forensic_marking_picture, disable_forensic_marking_audio);
 304 }
 305
 306 void
 307 from_dkdm (
 308         list<shared_ptr<Screen> > screens,
 309         dcp::DecryptedKDM dkdm,
 310         bool verbose,
 311         boost::filesystem::path output,
 312         dcp::NameFormat container_name_format,
 313         dcp::NameFormat filename_format,
 314         boost::posix_time::ptime valid_from,
 315         boost::posix_time::ptime valid_to,
 316         dcp::Formulation formulation,
 317         bool disable_forensic_marking_picture,
 318         optional<int> disable_forensic_marking_audio,
 319         bool zip
 320         )
 321 {
 322         dcp::NameFormat::Map values;
 323
 324         try {
 325                 list<KDMWithMetadataPtr> kdms;
 326                 BOOST_FOREACH (shared_ptr<Screen> i, screens) {
 327                         if (!i->recipient) {
 328                                 continue;
 329                         }
 330
 331                         dcp::LocalTime begin(valid_from, i->cinema->utc_offset_hour(), i->cinema->utc_offset_minute());
 332                         dcp::LocalTime end(valid_to, i->cinema->utc_offset_hour(), i->cinema->utc_offset_minute());
 333
 334                         dcp::EncryptedKDM const kdm = kdm_from_dkdm(
 335                                                         dkdm,
 336                                                         i->recipient.get(),
 337                                                         i->trusted_device_thumbprints(),
 338                                                         begin,
 339                                                         end,
 340                                                         formulation,
 341                                                         disable_forensic_marking_picture,
 342                                                         disable_forensic_marking_audio
 343                                                         );
 344
 345                         dcp::NameFormat::Map name_values;
 346                         name_values['c'] = i->cinema->name;
 347                         name_values['s'] = i->name;
 348                         name_values['f'] = dkdm.annotation_text().get_value_or("");
 349                         name_values['b'] = begin.date() + " " + begin.time_of_day(true, false);
 350                         name_values['e'] = end.date() + " " + end.time_of_day(true, false);
 351                         name_values['i'] = kdm.cpl_id();
 352
 353                         kdms.push_back (KDMWithMetadataPtr(new DCPKDMWithMetadata(name_values, i->cinema.get(), i->cinema->emails, kdm)));
 354                 }
 355                 write_files (kdms, zip, output, container_name_format, filename_format, verbose);
 356         } catch (FileError& e) {
 357                 cerr << program_name << ": " << e.what() << " (" << e.file().string() << ")\n";
 358                 exit (EXIT_FAILURE);
 359         } catch (KDMError& e) {
 360                 cerr << program_name << ": " << e.what() << "\n";
 361                 exit (EXIT_FAILURE);
 362         }
 363 }
 364
 365 void
 366 dump_dkdm_group (shared_ptr<DKDMGroup> group, int indent)
 367 {
 368         if (indent > 0) {
 369                 for (int i = 0; i < indent; ++i) {
 370                         cout << " ";
 371                 }
 372                 cout << group->name() << "\n";
 373         }
 374         BOOST_FOREACH (shared_ptr<DKDMBase> i, group->children()) {
 375                 shared_ptr<DKDMGroup> g = dynamic_pointer_cast<DKDMGroup>(i);
 376                 if (g) {
 377                         dump_dkdm_group (g, indent + 2);
 378                 } else {
 379                         for (int j = 0; j < indent; ++j) {
 380                                 cout << " ";
 381                         }
 382                         shared_ptr<DKDM> d = dynamic_pointer_cast<DKDM>(i);
 383                         assert(d);
 384                         cout << d->dkdm().cpl_id() << "\n";
 385                 }
 386         }
 387 }
 388
 389 int main (int argc, char* argv[])
 390 {
 391         boost::filesystem::path output = ".";
 392         dcp::NameFormat container_name_format = Config::instance()->kdm_container_name_format();
 393         dcp::NameFormat filename_format = Config::instance()->kdm_filename_format();
 394         optional<string> cinema_name;
 395         shared_ptr<Cinema> cinema;
 396         string screen_description = "";
 397         list<shared_ptr<Screen> > screens;
 398         optional<dcp::EncryptedKDM> dkdm;
 399         optional<boost::posix_time::ptime> valid_from;
 400         optional<boost::posix_time::ptime> valid_to;
 401         bool zip = false;
 402         bool list_cinemas = false;
 403         bool list_dkdm_cpls = false;
 404         optional<string> duration_string;
 405         bool verbose = false;
 406         dcp::Formulation formulation = dcp::MODIFIED_TRANSITIONAL_1;
 407         bool disable_forensic_marking_picture = false;
 408         optional<int> disable_forensic_marking_audio;
 409
 410         program_name = argv[0];
 411
 412         int option_index = 0;
 413         while (true) {
 414                 static struct option long_options[] = {
 415                         { "help", no_argument, 0, 'h'},
 416                         { "output", required_argument, 0, 'o'},
 417                         { "filename-format", required_argument, 0, 'K'},
 418                         { "container-name-format", required_argument, 0, 'Z'},
 419                         { "valid-from", required_argument, 0, 'f'},
 420                         { "valid-to", required_argument, 0, 't'},
 421                         { "valid-duration", required_argument, 0, 'd'},
 422                         { "formulation", required_argument, 0, 'F' },
 423                         { "disable-forensic-marking-picture", no_argument, 0, 'p' },
 424                         { "disable-forensic-marking-audio", optional_argument, 0, 'a' },
 425                         { "zip", no_argument, 0, 'z' },
 426                         { "verbose", no_argument, 0, 'v' },
 427                         { "cinema", required_argument, 0, 'c' },
 428                         { "screen", required_argument, 0, 'S' },
 429                         { "certificate", required_argument, 0, 'C' },
 430                         { "trusted-device", required_argument, 0, 'T' },
 431                         { "list-cinemas", no_argument, 0, 'B' },
 432                         { "list-dkdm-cpls", no_argument, 0, 'D' },
 433                         { 0, 0, 0, 0 }
 434                 };
 435
 436                 int c = getopt_long (argc, argv, "ho:K:Z:f:t:d:F:pa::zvc:S:C:T:BD", long_options, &option_index);
 437
 438                 if (c == -1) {
 439                         break;
 440                 }
 441
 442                 switch (c) {
 443                 case 'h':
 444                         help ();
 445                         exit (EXIT_SUCCESS);
 446                 case 'o':
 447                         output = optarg;
 448                         break;
 449                 case 'K':
 450                         filename_format = dcp::NameFormat (optarg);
 451                         break;
 452                 case 'Z':
 453                         container_name_format = dcp::NameFormat (optarg);
 454                         break;
 455                 case 'f':
 456                         valid_from = time_from_string (optarg);
 457                         break;
 458                 case 't':
 459                         valid_to = time_from_string (optarg);
 460                         break;
 461                 case 'd':
 462                         duration_string = optarg;
 463                         break;
 464                 case 'F':
 465                         if (string (optarg) == "modified-transitional-1") {
 466                                 formulation = dcp::MODIFIED_TRANSITIONAL_1;
 467                         } else if (string (optarg) == "multiple-modified-transitional-1") {
 468                                 formulation = dcp::MULTIPLE_MODIFIED_TRANSITIONAL_1;
 469                         } else if (string (optarg) == "dci-any") {
 470                                 formulation = dcp::DCI_ANY;
 471                         } else if (string (optarg) == "dci-specific") {
 472                                 formulation = dcp::DCI_SPECIFIC;
 473                         } else {
 474                                 error ("unrecognised KDM formulation " + string (optarg));
 475                         }
 476                         break;
 477                 case 'p':
 478                         disable_forensic_marking_picture = true;
 479                         break;
 480                 case 'a':
 481                         disable_forensic_marking_audio = 0;
 482                         if (optarg == 0 && argv[optind] != 0 && argv[optind][0] != '-') {
 483                                 disable_forensic_marking_audio = atoi (argv[optind++]);
 484                         } else if (optarg) {
 485                                 disable_forensic_marking_audio = atoi (optarg);
 486                         }
 487                         break;
 488                 case 'z':
 489                         zip = true;
 490                         break;
 491                 case 'v':
 492                         verbose = true;
 493                         break;
 494                 case 'c':
 495                         /* This could be a cinema to search for in the configured list or the name of a cinema being
 496                            built up on-the-fly in the option.  Cater for both possilibities here by storing the name
 497                            (for lookup) and by creating a Cinema which the next Screen will be added to.
 498                         */
 499                         cinema_name = optarg;
 500                         cinema = shared_ptr<Cinema> (new Cinema (optarg, list<string>(), "", 0, 0));
 501                         break;
 502                 case 'S':
 503                         screen_description = optarg;
 504                         break;
 505                 case 'C':
 506                 {
 507                         /* Make a new screen and add it to the current cinema */
 508                         dcp::CertificateChain chain (dcp::file_to_string(optarg));
 509                         shared_ptr<Screen> screen (new Screen (screen_description, "", chain.leaf(), vector<TrustedDevice>()));
 510                         if (cinema) {
 511                                 cinema->add_screen (screen);
 512                         }
 513                         screens.push_back (screen);
 514                         break;
 515                 }
 516                 case 'T':
 517                         /* A trusted device ends up in the last screen we made */
 518                         if (!screens.empty ()) {
 519                                 screens.back()->trusted_devices.push_back(TrustedDevice(dcp::Certificate(dcp::file_to_string(optarg))));
 520                         }
 521                         break;
 522                 case 'B':
 523                         list_cinemas = true;
 524                         break;
 525                 case 'D':
 526                         list_dkdm_cpls = true;
 527                         break;
 528                 }
 529         }
 530
 531         if (list_cinemas) {
 532                 list<boost::shared_ptr<Cinema> > cinemas = Config::instance()->cinemas ();
 533                 for (list<boost::shared_ptr<Cinema> >::const_iterator i = cinemas.begin(); i != cinemas.end(); ++i) {
 534                         cout << (*i)->name << " (" << Emailer::address_list ((*i)->emails) << ")\n";
 535                 }
 536                 exit (EXIT_SUCCESS);
 537         }
 538
 539         if (list_dkdm_cpls) {
 540                 dump_dkdm_group (Config::instance()->dkdms(), 0);
 541                 exit (EXIT_SUCCESS);
 542         }
 543
 544         if (!duration_string && !valid_to) {
 545                 error ("you must specify a --valid-duration or --valid-to");
 546         }
 547
 548         if (!valid_from) {
 549                 error ("you must specify --valid-from");
 550                 exit (EXIT_FAILURE);
 551         }
 552
 553         if (optind >= argc) {
 554                 help ();
 555                 exit (EXIT_FAILURE);
 556         }
 557
 558         if (screens.empty()) {
 559                 if (!cinema_name) {
 560                         error ("you must specify either a cinema or one or more screens using certificate files");
 561                 }
 562
 563                 screens = find_cinema (*cinema_name)->screens ();
 564         }
 565
 566         if (duration_string) {
 567                 valid_to = valid_from.get() + duration_from_string (*duration_string);
 568         }
 569
 570         dcpomatic_setup_path_encoding ();
 571         dcpomatic_setup ();
 572
 573         if (verbose) {
 574                 cout << "Making KDMs valid from " << valid_from.get() << " to " << valid_to.get() << "\n";
 575         }
 576
 577         string const thing = argv[optind];
 578         if (boost::filesystem::is_directory(thing) && boost::filesystem::is_regular_file(boost::filesystem::path(thing) / "metadata.xml")) {
 579                 from_film (
 580                         screens,
 581                         thing,
 582                         verbose,
 583                         output,
 584                         container_name_format,
 585                         filename_format,
 586                         *valid_from,
 587                         *valid_to,
 588                         formulation,
 589                         disable_forensic_marking_picture,
 590                         disable_forensic_marking_audio,
 591                         zip
 592                         );
 593         } else {
 594                 if (boost::filesystem::is_regular_file(thing)) {
 595                         dkdm = dcp::EncryptedKDM (dcp::file_to_string (thing));
 596                 } else {
 597                         dkdm = find_dkdm (thing);
 598                 }
 599
 600                 if (!dkdm) {
 601                         error ("could not find film or CPL ID corresponding to " + thing);
 602                 }
 603
 604                 from_dkdm (
 605                         screens,
 606                         dcp::DecryptedKDM (*dkdm, Config::instance()->decryption_chain()->key().get()),
 607                         verbose,
 608                         output,
 609                         container_name_format,
 610                         filename_format,
 611                         *valid_from,
 612                         *valid_to,
 613                         formulation,
 614                         disable_forensic_marking_picture,
 615                         disable_forensic_marking_audio,
 616                         zip
 617                         );
 618         }
 619
 620         return 0;
 621 }