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         dcp::NameFormat::Map values,
 138         bool verbose
 139         )
 140 {
 141         if (zip) {
 142                 int const N = write_zip_files (
 143                         collect (kdms),
 144                         output,
 145                         container_name_format,
 146                         filename_format,
 147                         values,
 148                         bind (&always_overwrite)
 149                         );
 150
 151                 if (verbose) {
 152                         cout << "Wrote " << N << " ZIP files to " << output << "\n";
 153                 }
 154         } else {
 155                 int const N = write_files (
 156                         kdms, output, filename_format, values,
 157                         bind (&always_overwrite)
 158                         );
 159
 160                 if (verbose) {
 161                         cout << "Wrote " << N << " KDM files to " << output << "\n";
 162                 }
 163         }
 164 }
 165
 166 shared_ptr<Cinema>
 167 find_cinema (string cinema_name)
 168 {
 169         list<shared_ptr<Cinema> > cinemas = Config::instance()->cinemas ();
 170         list<shared_ptr<Cinema> >::const_iterator i = cinemas.begin();
 171         while (
 172                 i != cinemas.end() &&
 173                 (*i)->name != cinema_name &&
 174                 find ((*i)->emails.begin(), (*i)->emails.end(), cinema_name) == (*i)->emails.end()) {
 175
 176                 ++i;
 177         }
 178
 179         if (i == cinemas.end ()) {
 180                 cerr << program_name << ": could not find cinema \"" << cinema_name << "\"\n";
 181                 exit (EXIT_FAILURE);
 182         }
 183
 184         return *i;
 185 }
 186
 187 void
 188 from_film (
 189         list<shared_ptr<Screen> > screens,
 190         boost::filesystem::path film_dir,
 191         bool verbose,
 192         boost::filesystem::path output,
 193         dcp::NameFormat container_name_format,
 194         dcp::NameFormat filename_format,
 195         boost::posix_time::ptime valid_from,
 196         boost::posix_time::ptime valid_to,
 197         dcp::Formulation formulation,
 198         bool disable_forensic_marking_picture,
 199         optional<int> disable_forensic_marking_audio,
 200         bool zip
 201         )
 202 {
 203         shared_ptr<Film> film;
 204         try {
 205                 film.reset (new Film (film_dir));
 206                 film->read_metadata ();
 207                 if (verbose) {
 208                         cout << "Read film " << film->name () << "\n";
 209                 }
 210         } catch (std::exception& e) {
 211                 cerr << program_name << ": error reading film `" << film_dir.string() << "' (" << e.what() << ")\n";
 212                 exit (EXIT_FAILURE);
 213         }
 214
 215         /* XXX: allow specification of this */
 216         vector<CPLSummary> cpls = film->cpls ();
 217         if (cpls.empty ()) {
 218                 error ("no CPLs found in film");
 219         } else if (cpls.size() > 1) {
 220                 error ("more than one CPL found in film");
 221         }
 222
 223         boost::filesystem::path cpl = cpls.front().cpl_file;
 224
 225         dcp::NameFormat::Map values;
 226
 227         try {
 228                 list<KDMWithMetadataPtr> kdms;
 229
 230                 BOOST_FOREACH (shared_ptr<Screen> i, screens) {
 231                         if (i->recipient) {
 232
 233                                 dcp::LocalTime const begin(valid_from, i->cinema ? i->cinema->utc_offset_hour() : 0, i->cinema ? i->cinema->utc_offset_minute() : 0);
 234                                 dcp::LocalTime const end(valid_to,   i->cinema ? i->cinema->utc_offset_hour() : 0, i->cinema ? i->cinema->utc_offset_minute() : 0);
 235
 236                                 dcp::EncryptedKDM const kdm = film->make_kdm (
 237                                                 i->recipient.get(),
 238                                                 i->trusted_device_thumbprints(),
 239                                                 cpl,
 240                                                 begin,
 241                                                 end,
 242                                                 formulation,
 243                                                 disable_forensic_marking_picture,
 244                                                 disable_forensic_marking_audio
 245                                                 );
 246
 247                                 dcp::NameFormat::Map name_values;
 248                                 name_values['c'] = i->cinema->name;
 249                                 name_values['s'] = i->name;
 250                                 name_values['f'] = film->name();
 251                                 name_values['b'] = dcp::LocalTime(begin).date() + " " + dcp::LocalTime(begin).time_of_day(true, false);
 252                                 name_values['e'] = dcp::LocalTime(end).date() + " " + dcp::LocalTime(end).time_of_day(true, false);
 253                                 name_values['i'] = kdm.cpl_id();
 254
 255                                 kdms.push_back (KDMWithMetadataPtr(new DCPKDMWithMetadata(name_values, i->cinema, kdm)));
 256                         }
 257                 }
 258
 259                 write_files (kdms, zip, output, container_name_format, filename_format, values, verbose);
 260         } catch (FileError& e) {
 261                 cerr << program_name << ": " << e.what() << " (" << e.file().string() << ")\n";
 262                 exit (EXIT_FAILURE);
 263         } catch (KDMError& e) {
 264                 cerr << program_name << ": " << e.what() << "\n";
 265                 exit (EXIT_FAILURE);
 266         } catch (runtime_error& e) {
 267                 cerr << program_name << ": " << e.what() << "\n";
 268                 exit (EXIT_FAILURE);
 269         }
 270 }
 271
 272 optional<dcp::EncryptedKDM>
 273 sub_find_dkdm (shared_ptr<DKDMGroup> group, string cpl_id)
 274 {
 275         BOOST_FOREACH (shared_ptr<DKDMBase> i, group->children()) {
 276                 shared_ptr<DKDMGroup> g = dynamic_pointer_cast<DKDMGroup>(i);
 277                 if (g) {
 278                         optional<dcp::EncryptedKDM> dkdm = sub_find_dkdm (g, cpl_id);
 279                         if (dkdm) {
 280                                 return dkdm;
 281                         }
 282                 } else {
 283                         shared_ptr<DKDM> d = dynamic_pointer_cast<DKDM>(i);
 284                         assert (d);
 285                         if (d->dkdm().cpl_id() == cpl_id) {
 286                                 return d->dkdm();
 287                         }
 288                 }
 289         }
 290
 291         return optional<dcp::EncryptedKDM>();
 292 }
 293
 294 optional<dcp::EncryptedKDM>
 295 find_dkdm (string cpl_id)
 296 {
 297         return sub_find_dkdm (Config::instance()->dkdms(), cpl_id);
 298 }
 299
 300 dcp::EncryptedKDM
 301 kdm_from_dkdm (
 302         dcp::DecryptedKDM dkdm,
 303         dcp::Certificate target,
 304         vector<string> trusted_devices,
 305         dcp::LocalTime valid_from,
 306         dcp::LocalTime valid_to,
 307         dcp::Formulation formulation,
 308         bool disable_forensic_marking_picture,
 309         optional<int> disable_forensic_marking_audio
 310         )
 311 {
 312         /* Signer for new KDM */
 313         shared_ptr<const dcp::CertificateChain> signer = Config::instance()->signer_chain ();
 314         if (!signer->valid ()) {
 315                 error ("signing certificate chain is invalid.");
 316         }
 317
 318         /* Make a new empty KDM and add the keys from the DKDM to it */
 319         dcp::DecryptedKDM kdm (
 320                 valid_from,
 321                 valid_to,
 322                 dkdm.annotation_text().get_value_or(""),
 323                 dkdm.content_title_text(),
 324                 dcp::LocalTime().as_string()
 325                 );
 326
 327         BOOST_FOREACH (dcp::DecryptedKDMKey const & j, dkdm.keys()) {
 328                 kdm.add_key(j);
 329         }
 330
 331         return kdm.encrypt (signer, target, trusted_devices, formulation, disable_forensic_marking_picture, disable_forensic_marking_audio);
 332 }
 333
 334 void
 335 from_dkdm (
 336         list<shared_ptr<Screen> > screens,
 337         dcp::DecryptedKDM dkdm,
 338         bool verbose,
 339         boost::filesystem::path output,
 340         dcp::NameFormat container_name_format,
 341         dcp::NameFormat filename_format,
 342         boost::posix_time::ptime valid_from,
 343         boost::posix_time::ptime valid_to,
 344         dcp::Formulation formulation,
 345         bool disable_forensic_marking_picture,
 346         optional<int> disable_forensic_marking_audio,
 347         bool zip
 348         )
 349 {
 350         dcp::NameFormat::Map values;
 351
 352         try {
 353                 list<KDMWithMetadataPtr> kdms;
 354                 BOOST_FOREACH (shared_ptr<Screen> i, screens) {
 355                         if (!i->recipient) {
 356                                 continue;
 357                         }
 358
 359                         dcp::LocalTime begin(valid_from, i->cinema->utc_offset_hour(), i->cinema->utc_offset_minute());
 360                         dcp::LocalTime end(valid_to, i->cinema->utc_offset_hour(), i->cinema->utc_offset_minute());
 361
 362                         dcp::EncryptedKDM const kdm = kdm_from_dkdm(
 363                                                         dkdm,
 364                                                         i->recipient.get(),
 365                                                         i->trusted_device_thumbprints(),
 366                                                         begin,
 367                                                         end,
 368                                                         formulation,
 369                                                         disable_forensic_marking_picture,
 370                                                         disable_forensic_marking_audio
 371                                                         );
 372
 373                         dcp::NameFormat::Map name_values;
 374                         name_values['c'] = i->cinema->name;
 375                         name_values['s'] = i->name;
 376                         name_values['f'] = dkdm.annotation_text().get_value_or("");
 377                         name_values['b'] = begin.date() + " " + begin.time_of_day(true, false);
 378                         name_values['e'] = end.date() + " " + end.time_of_day(true, false);
 379                         name_values['i'] = kdm.cpl_id();
 380
 381                         kdms.push_back (KDMWithMetadataPtr(new DCPKDMWithMetadata(name_values, i->cinema, kdm)));
 382                 }
 383                 write_files (kdms, zip, output, container_name_format, filename_format, values, verbose);
 384         } catch (FileError& e) {
 385                 cerr << program_name << ": " << e.what() << " (" << e.file().string() << ")\n";
 386                 exit (EXIT_FAILURE);
 387         } catch (KDMError& e) {
 388                 cerr << program_name << ": " << e.what() << "\n";
 389                 exit (EXIT_FAILURE);
 390         }
 391 }
 392
 393 void
 394 dump_dkdm_group (shared_ptr<DKDMGroup> group, int indent)
 395 {
 396         if (indent > 0) {
 397                 for (int i = 0; i < indent; ++i) {
 398                         cout << " ";
 399                 }
 400                 cout << group->name() << "\n";
 401         }
 402         BOOST_FOREACH (shared_ptr<DKDMBase> i, group->children()) {
 403                 shared_ptr<DKDMGroup> g = dynamic_pointer_cast<DKDMGroup>(i);
 404                 if (g) {
 405                         dump_dkdm_group (g, indent + 2);
 406                 } else {
 407                         for (int j = 0; j < indent; ++j) {
 408                                 cout << " ";
 409                         }
 410                         shared_ptr<DKDM> d = dynamic_pointer_cast<DKDM>(i);
 411                         assert(d);
 412                         cout << d->dkdm().cpl_id() << "\n";
 413                 }
 414         }
 415 }
 416
 417 int main (int argc, char* argv[])
 418 {
 419         boost::filesystem::path output = ".";
 420         dcp::NameFormat container_name_format = Config::instance()->kdm_container_name_format();
 421         dcp::NameFormat filename_format = Config::instance()->kdm_filename_format();
 422         optional<string> cinema_name;
 423         shared_ptr<Cinema> cinema;
 424         string screen_description = "";
 425         list<shared_ptr<Screen> > screens;
 426         optional<dcp::EncryptedKDM> dkdm;
 427         optional<boost::posix_time::ptime> valid_from;
 428         optional<boost::posix_time::ptime> valid_to;
 429         bool zip = false;
 430         bool list_cinemas = false;
 431         bool list_dkdm_cpls = false;
 432         optional<string> duration_string;
 433         bool verbose = false;
 434         dcp::Formulation formulation = dcp::MODIFIED_TRANSITIONAL_1;
 435         bool disable_forensic_marking_picture = false;
 436         optional<int> disable_forensic_marking_audio;
 437
 438         program_name = argv[0];
 439
 440         int option_index = 0;
 441         while (true) {
 442                 static struct option long_options[] = {
 443                         { "help", no_argument, 0, 'h'},
 444                         { "output", required_argument, 0, 'o'},
 445                         { "filename-format", required_argument, 0, 'K'},
 446                         { "container-name-format", required_argument, 0, 'Z'},
 447                         { "valid-from", required_argument, 0, 'f'},
 448                         { "valid-to", required_argument, 0, 't'},
 449                         { "valid-duration", required_argument, 0, 'd'},
 450                         { "formulation", required_argument, 0, 'F' },
 451                         { "disable-forensic-marking-picture", no_argument, 0, 'p' },
 452                         { "disable-forensic-marking-audio", optional_argument, 0, 'a' },
 453                         { "zip", no_argument, 0, 'z' },
 454                         { "verbose", no_argument, 0, 'v' },
 455                         { "cinema", required_argument, 0, 'c' },
 456                         { "screen", required_argument, 0, 'S' },
 457                         { "certificate", required_argument, 0, 'C' },
 458                         { "trusted-device", required_argument, 0, 'T' },
 459                         { "list-cinemas", no_argument, 0, 'B' },
 460                         { "list-dkdm-cpls", no_argument, 0, 'D' },
 461                         { 0, 0, 0, 0 }
 462                 };
 463
 464                 int c = getopt_long (argc, argv, "ho:K:Z:f:t:d:F:pa::zvc:S:C:T:BD", long_options, &option_index);
 465
 466                 if (c == -1) {
 467                         break;
 468                 }
 469
 470                 switch (c) {
 471                 case 'h':
 472                         help ();
 473                         exit (EXIT_SUCCESS);
 474                 case 'o':
 475                         output = optarg;
 476                         break;
 477                 case 'K':
 478                         filename_format = dcp::NameFormat (optarg);
 479                         break;
 480                 case 'Z':
 481                         container_name_format = dcp::NameFormat (optarg);
 482                         break;
 483                 case 'f':
 484                         valid_from = time_from_string (optarg);
 485                         break;
 486                 case 't':
 487                         valid_to = time_from_string (optarg);
 488                         break;
 489                 case 'd':
 490                         duration_string = optarg;
 491                         break;
 492                 case 'F':
 493                         if (string (optarg) == "modified-transitional-1") {
 494                                 formulation = dcp::MODIFIED_TRANSITIONAL_1;
 495                         } else if (string (optarg) == "multiple-modified-transitional-1") {
 496                                 formulation = dcp::MULTIPLE_MODIFIED_TRANSITIONAL_1;
 497                         } else if (string (optarg) == "dci-any") {
 498                                 formulation = dcp::DCI_ANY;
 499                         } else if (string (optarg) == "dci-specific") {
 500                                 formulation = dcp::DCI_SPECIFIC;
 501                         } else {
 502                                 error ("unrecognised KDM formulation " + string (optarg));
 503                         }
 504                         break;
 505                 case 'p':
 506                         disable_forensic_marking_picture = true;
 507                         break;
 508                 case 'a':
 509                         disable_forensic_marking_audio = 0;
 510                         if (optarg == 0 && argv[optind] != 0 && argv[optind][0] != '-') {
 511                                 disable_forensic_marking_audio = atoi (argv[optind++]);
 512                         } else if (optarg) {
 513                                 disable_forensic_marking_audio = atoi (optarg);
 514                         }
 515                         break;
 516                 case 'z':
 517                         zip = true;
 518                         break;
 519                 case 'v':
 520                         verbose = true;
 521                         break;
 522                 case 'c':
 523                         /* This could be a cinema to search for in the configured list or the name of a cinema being
 524                            built up on-the-fly in the option.  Cater for both possilibities here by storing the name
 525                            (for lookup) and by creating a Cinema which the next Screen will be added to.
 526                         */
 527                         cinema_name = optarg;
 528                         cinema = shared_ptr<Cinema> (new Cinema (optarg, list<string>(), "", 0, 0));
 529                         break;
 530                 case 'S':
 531                         screen_description = optarg;
 532                         break;
 533                 case 'C':
 534                 {
 535                         /* Make a new screen and add it to the current cinema */
 536                         dcp::CertificateChain chain (dcp::file_to_string(optarg));
 537                         shared_ptr<Screen> screen (new Screen (screen_description, "", chain.leaf(), vector<TrustedDevice>()));
 538                         if (cinema) {
 539                                 cinema->add_screen (screen);
 540                         }
 541                         screens.push_back (screen);
 542                         break;
 543                 }
 544                 case 'T':
 545                         /* A trusted device ends up in the last screen we made */
 546                         if (!screens.empty ()) {
 547                                 screens.back()->trusted_devices.push_back(TrustedDevice(dcp::Certificate(dcp::file_to_string(optarg))));
 548                         }
 549                         break;
 550                 case 'B':
 551                         list_cinemas = true;
 552                         break;
 553                 case 'D':
 554                         list_dkdm_cpls = true;
 555                         break;
 556                 }
 557         }
 558
 559         if (list_cinemas) {
 560                 list<boost::shared_ptr<Cinema> > cinemas = Config::instance()->cinemas ();
 561                 for (list<boost::shared_ptr<Cinema> >::const_iterator i = cinemas.begin(); i != cinemas.end(); ++i) {
 562                         cout << (*i)->name << " (" << Emailer::address_list ((*i)->emails) << ")\n";
 563                 }
 564                 exit (EXIT_SUCCESS);
 565         }
 566
 567         if (list_dkdm_cpls) {
 568                 dump_dkdm_group (Config::instance()->dkdms(), 0);
 569                 exit (EXIT_SUCCESS);
 570         }
 571
 572         if (!duration_string && !valid_to) {
 573                 error ("you must specify a --valid-duration or --valid-to");
 574         }
 575
 576         if (!valid_from) {
 577                 error ("you must specify --valid-from");
 578                 exit (EXIT_FAILURE);
 579         }
 580
 581         if (optind >= argc) {
 582                 help ();
 583                 exit (EXIT_FAILURE);
 584         }
 585
 586         if (screens.empty()) {
 587                 if (!cinema_name) {
 588                         error ("you must specify either a cinema or one or more screens using certificate files");
 589                 }
 590
 591                 screens = find_cinema (*cinema_name)->screens ();
 592         }
 593
 594         if (duration_string) {
 595                 valid_to = valid_from.get() + duration_from_string (*duration_string);
 596         }
 597
 598         dcpomatic_setup_path_encoding ();
 599         dcpomatic_setup ();
 600
 601         if (verbose) {
 602                 cout << "Making KDMs valid from " << valid_from.get() << " to " << valid_to.get() << "\n";
 603         }
 604
 605         string const thing = argv[optind];
 606         if (boost::filesystem::is_directory(thing) && boost::filesystem::is_regular_file(boost::filesystem::path(thing) / "metadata.xml")) {
 607                 from_film (
 608                         screens,
 609                         thing,
 610                         verbose,
 611                         output,
 612                         container_name_format,
 613                         filename_format,
 614                         *valid_from,
 615                         *valid_to,
 616                         formulation,
 617                         disable_forensic_marking_picture,
 618                         disable_forensic_marking_audio,
 619                         zip
 620                         );
 621         } else {
 622                 if (boost::filesystem::is_regular_file(thing)) {
 623                         dkdm = dcp::EncryptedKDM (dcp::file_to_string (thing));
 624                 } else {
 625                         dkdm = find_dkdm (thing);
 626                 }
 627
 628                 if (!dkdm) {
 629                         error ("could not find film or CPL ID corresponding to " + thing);
 630                 }
 631
 632                 from_dkdm (
 633                         screens,
 634                         dcp::DecryptedKDM (*dkdm, Config::instance()->decryption_chain()->key().get()),
 635                         verbose,
 636                         output,
 637                         container_name_format,
 638                         filename_format,
 639                         *valid_from,
 640                         *valid_to,
 641                         formulation,
 642                         disable_forensic_marking_picture,
 643                         disable_forensic_marking_audio,
 644                         zip
 645                         );
 646         }
 647
 648         return 0;
 649 }