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/screen_with_kdm.h"
  27 #include "lib/config.h"
  28 #include "lib/exceptions.h"
  29 #include "lib/emailer.h"
  30 #include "lib/dkdm_wrapper.h"
  31 #include "lib/screen.h"
  32 #include "lib/cinema.h"
  33 #include "lib/cinema_kdms.h"
  34 #include <dcp/certificate.h>
  35 #include <dcp/decrypted_kdm.h>
  36 #include <dcp/encrypted_kdm.h>
  37 #include <getopt.h>
  38 #include <boost/foreach.hpp>
  39 #include <iostream>
  40
  41 using std::string;
  42 using std::cout;
  43 using std::cerr;
  44 using std::list;
  45 using std::vector;
  46 using std::runtime_error;
  47 using boost::shared_ptr;
  48 using boost::optional;
  49 using boost::bind;
  50 using boost::dynamic_pointer_cast;
  51 using namespace dcpomatic;
  52
  53 static void
  54 help ()
  55 {
  56         cerr << "Syntax: " << program_name << " [OPTION] <FILM|CPL-ID|DKDM>\n"
  57                 "  -h, --help                               show this help\n"
  58                 "  -o, --output                             output file or directory\n"
  59                 "  -K, --filename-format                    filename format for KDMs\n"
  60                 "  -Z, --container-name-format              filename format for ZIP containers\n"
  61                 "  -f, --valid-from                         valid from time (in local time zone of the cinema) (e.g. \"2013-09-28 01:41:51\") or \"now\"\n"
  62                 "  -t, --valid-to                           valid to time (in local time zone of the cinema) (e.g. \"2014-09-28 01:41:51\")\n"
  63                 "  -d, --valid-duration                     valid duration (e.g. \"1 day\", \"4 hours\", \"2 weeks\")\n"
  64                 "  -F, --formulation                        modified-transitional-1, multiple-modified-transitional-1, dci-any or dci-specific [default modified-transitional-1]\n"
  65                 "  -a, --disable-forensic-marking-picture   disable forensic marking of pictures essences\n"
  66                 "  -a, --disable-forensic-marking-audio     disable forensic marking of audio essences (optionally above a given channel, e.g 12)\n"
  67                 "  -z, --zip                                ZIP each cinema's KDMs into its own file\n"
  68                 "  -v, --verbose                            be verbose\n"
  69                 "  -c, --cinema                             specify a cinema, either by name or email address\n"
  70                 "  -S, --screen                             screen description\n"
  71                 "  -C, --certificate                        file containing projector certificate\n"
  72                 "  -T, --trusted-device                     file containing a trusted device's certificate\n"
  73                 "      --list-cinemas                       list known cinemas from the DCP-o-matic settings\n"
  74                 "      --list-dkdm-cpls                     list CPLs for which DCP-o-matic has DKDMs\n\n"
  75                 "CPL-ID must be the ID of a CPL that is mentioned in DCP-o-matic's DKDM list.\n\n"
  76                 "For example:\n\n"
  77                 "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"
  78                 "(Fred's Cinema must have been set up in DCP-o-matic's KDM window)\n\n"
  79                 "\t" << program_name << " -c \"Fred's Cinema\" -f now -d \"2 weeks\" -z my_great_movie\n\n";
  80 }
  81
  82 static void
  83 error (string m)
  84 {
  85         cerr << program_name << ": " << m << "\n";
  86         exit (EXIT_FAILURE);
  87 }
  88
  89 static boost::posix_time::ptime
  90 time_from_string (string t)
  91 {
  92         if (t == "now") {
  93                 return boost::posix_time::second_clock::local_time ();
  94         }
  95
  96         return boost::posix_time::time_from_string (t);
  97 }
  98
  99 static boost::posix_time::time_duration
 100 duration_from_string (string d)
 101 {
 102         int N;
 103         char unit_buf[64] = "\0";
 104         sscanf (d.c_str(), "%d %63s", &N, unit_buf);
 105         string const unit (unit_buf);
 106
 107         if (N == 0) {
 108                 cerr << "Could not understand duration \"" << d << "\"\n";
 109                 exit (EXIT_FAILURE);
 110         }
 111
 112         if (unit == "year" || unit == "years") {
 113                 return boost::posix_time::time_duration (N * 24 * 365, 0, 0, 0);
 114         } else if (unit == "week" || unit == "weeks") {
 115                 return boost::posix_time::time_duration (N * 24 * 7, 0, 0, 0);
 116         } else if (unit == "day" || unit == "days") {
 117                 return boost::posix_time::time_duration (N * 24, 0, 0, 0);
 118         } else if (unit == "hour" || unit == "hours") {
 119                 return boost::posix_time::time_duration (N, 0, 0, 0);
 120         }
 121
 122         cerr << "Could not understand duration \"" << d << "\"\n";
 123         exit (EXIT_FAILURE);
 124 }
 125
 126 static bool
 127 always_overwrite ()
 128 {
 129         return true;
 130 }
 131
 132 void
 133 write_files (
 134         list<shared_ptr<ScreenWithKDM> > screen_kdms,
 135         bool zip,
 136         boost::filesystem::path output,
 137         dcp::NameFormat container_name_format,
 138         dcp::NameFormat filename_format,
 139         dcp::NameFormat::Map values,
 140         bool verbose
 141         )
 142 {
 143         if (zip) {
 144                 int const N = CinemaKDMs::write_zip_files (
 145                         CinemaKDMs::collect (screen_kdms),
 146                         output,
 147                         container_name_format,
 148                         filename_format,
 149                         values,
 150                         bind (&always_overwrite)
 151                         );
 152
 153                 if (verbose) {
 154                         cout << "Wrote " << N << " ZIP files to " << output << "\n";
 155                 }
 156         } else {
 157                 int const N = ScreenWithKDM::write_files (
 158                         screen_kdms, output, filename_format, values,
 159                         bind (&always_overwrite)
 160                         );
 161
 162                 if (verbose) {
 163                         cout << "Wrote " << N << " KDM files to " << output << "\n";
 164                 }
 165         }
 166 }
 167
 168 shared_ptr<Cinema>
 169 find_cinema (string cinema_name)
 170 {
 171         list<shared_ptr<Cinema> > cinemas = Config::instance()->cinemas ();
 172         list<shared_ptr<Cinema> >::const_iterator i = cinemas.begin();
 173         while (
 174                 i != cinemas.end() &&
 175                 (*i)->name != cinema_name &&
 176                 find ((*i)->emails.begin(), (*i)->emails.end(), cinema_name) == (*i)->emails.end()) {
 177
 178                 ++i;
 179         }
 180
 181         if (i == cinemas.end ()) {
 182                 cerr << program_name << ": could not find cinema \"" << cinema_name << "\"\n";
 183                 exit (EXIT_FAILURE);
 184         }
 185
 186         return *i;
 187 }
 188
 189 void
 190 from_film (
 191         list<shared_ptr<Screen> > screens,
 192         boost::filesystem::path film_dir,
 193         bool verbose,
 194         boost::filesystem::path output,
 195         dcp::NameFormat container_name_format,
 196         dcp::NameFormat filename_format,
 197         boost::posix_time::ptime valid_from,
 198         boost::posix_time::ptime valid_to,
 199         dcp::Formulation formulation,
 200         bool disable_forensic_marking_picture,
 201         optional<int> disable_forensic_marking_audio,
 202         bool zip
 203         )
 204 {
 205         shared_ptr<Film> film;
 206         try {
 207                 film.reset (new Film (film_dir));
 208                 film->read_metadata ();
 209                 if (verbose) {
 210                         cout << "Read film " << film->name () << "\n";
 211                 }
 212         } catch (std::exception& e) {
 213                 cerr << program_name << ": error reading film `" << film_dir.string() << "' (" << e.what() << ")\n";
 214                 exit (EXIT_FAILURE);
 215         }
 216
 217         /* XXX: allow specification of this */
 218         vector<CPLSummary> cpls = film->cpls ();
 219         if (cpls.empty ()) {
 220                 error ("no CPLs found in film");
 221         } else if (cpls.size() > 1) {
 222                 error ("more than one CPL found in film");
 223         }
 224
 225         boost::filesystem::path cpl = cpls.front().cpl_file;
 226
 227         dcp::NameFormat::Map values;
 228         values['f'] = film->name();
 229         values['b'] = dcp::LocalTime(valid_from).date() + " " + dcp::LocalTime(valid_from).time_of_day(true, false);
 230         values['e'] = dcp::LocalTime(valid_to).date() + " " + dcp::LocalTime(valid_to).time_of_day(true, false);
 231
 232         try {
 233                 list<shared_ptr<ScreenWithKDM> > kdms;
 234
 235                 BOOST_FOREACH (shared_ptr<Screen> i, screens) {
 236                         if (i->recipient) {
 237                                 dcp::EncryptedKDM const kdm = film->make_kdm (
 238                                                 i->recipient.get(),
 239                                                 i->trusted_device_thumbprints(),
 240                                                 cpl,
 241                                                 dcp::LocalTime(valid_from, i->utc_offset_hour(), i->utc_offset_minute()),
 242                                                 dcp::LocalTime(valid_to,   i->utc_offset_hour(), i->utc_offset_minute()),
 243                                                 formulation,
 244                                                 disable_forensic_marking_picture,
 245                                                 disable_forensic_marking_audio
 246                                                 );
 247
 248                                 kdms.push_back (shared_ptr<ScreenWithKDM>(new DCPScreenWithKDM(i, kdm)));
 249                         }
 250                 }
 251
 252                 write_files (kdms, zip, output, container_name_format, filename_format, values, verbose);
 253         } catch (FileError& e) {
 254                 cerr << program_name << ": " << e.what() << " (" << e.file().string() << ")\n";
 255                 exit (EXIT_FAILURE);
 256         } catch (KDMError& e) {
 257                 cerr << program_name << ": " << e.what() << "\n";
 258                 exit (EXIT_FAILURE);
 259         } catch (runtime_error& e) {
 260                 cerr << program_name << ": " << e.what() << "\n";
 261                 exit (EXIT_FAILURE);
 262         }
 263 }
 264
 265 optional<dcp::EncryptedKDM>
 266 sub_find_dkdm (shared_ptr<DKDMGroup> group, string cpl_id)
 267 {
 268         BOOST_FOREACH (shared_ptr<DKDMBase> i, group->children()) {
 269                 shared_ptr<DKDMGroup> g = dynamic_pointer_cast<DKDMGroup>(i);
 270                 if (g) {
 271                         optional<dcp::EncryptedKDM> dkdm = sub_find_dkdm (g, cpl_id);
 272                         if (dkdm) {
 273                                 return dkdm;
 274                         }
 275                 } else {
 276                         shared_ptr<DKDM> d = dynamic_pointer_cast<DKDM>(i);
 277                         assert (d);
 278                         if (d->dkdm().cpl_id() == cpl_id) {
 279                                 return d->dkdm();
 280                         }
 281                 }
 282         }
 283
 284         return optional<dcp::EncryptedKDM>();
 285 }
 286
 287 optional<dcp::EncryptedKDM>
 288 find_dkdm (string cpl_id)
 289 {
 290         return sub_find_dkdm (Config::instance()->dkdms(), cpl_id);
 291 }
 292
 293 dcp::EncryptedKDM
 294 kdm_from_dkdm (
 295         dcp::DecryptedKDM dkdm,
 296         dcp::Certificate target,
 297         vector<string> trusted_devices,
 298         dcp::LocalTime valid_from,
 299         dcp::LocalTime valid_to,
 300         dcp::Formulation formulation,
 301         bool disable_forensic_marking_picture,
 302         optional<int> disable_forensic_marking_audio
 303         )
 304 {
 305         /* Signer for new KDM */
 306         shared_ptr<const dcp::CertificateChain> signer = Config::instance()->signer_chain ();
 307         if (!signer->valid ()) {
 308                 error ("signing certificate chain is invalid.");
 309         }
 310
 311         /* Make a new empty KDM and add the keys from the DKDM to it */
 312         dcp::DecryptedKDM kdm (
 313                 valid_from,
 314                 valid_to,
 315                 dkdm.annotation_text().get_value_or(""),
 316                 dkdm.content_title_text(),
 317                 dcp::LocalTime().as_string()
 318                 );
 319
 320         BOOST_FOREACH (dcp::DecryptedKDMKey const & j, dkdm.keys()) {
 321                 kdm.add_key(j);
 322         }
 323
 324         return kdm.encrypt (signer, target, trusted_devices, formulation, disable_forensic_marking_picture, disable_forensic_marking_audio);
 325 }
 326
 327 void
 328 from_dkdm (
 329         list<shared_ptr<Screen> > screens,
 330         dcp::DecryptedKDM dkdm,
 331         bool verbose,
 332         boost::filesystem::path output,
 333         dcp::NameFormat container_name_format,
 334         dcp::NameFormat filename_format,
 335         boost::posix_time::ptime valid_from,
 336         boost::posix_time::ptime valid_to,
 337         dcp::Formulation formulation,
 338         bool disable_forensic_marking_picture,
 339         optional<int> disable_forensic_marking_audio,
 340         bool zip
 341         )
 342 {
 343         dcp::NameFormat::Map values;
 344         values['f'] = dkdm.annotation_text().get_value_or("");
 345         values['b'] = dcp::LocalTime(valid_from).date() + " " + dcp::LocalTime(valid_from).time_of_day(true, false);
 346         values['e'] = dcp::LocalTime(valid_to).date() + " " + dcp::LocalTime(valid_to).time_of_day(true, false);
 347
 348         try {
 349                 list<shared_ptr<ScreenWithKDM> > screen_kdms;
 350                 BOOST_FOREACH (shared_ptr<Screen> i, screens) {
 351                         if (!i->recipient) {
 352                                 continue;
 353                         }
 354
 355                         screen_kdms.push_back (
 356                                 shared_ptr<ScreenWithKDM>(
 357                                         new DCPScreenWithKDM(
 358                                                 i,
 359                                                 kdm_from_dkdm(
 360                                                         dkdm,
 361                                                         i->recipient.get(),
 362                                                         i->trusted_device_thumbprints(),
 363                                                         dcp::LocalTime(valid_from, i->utc_offset_hour(), i->utc_offset_minute()),
 364                                                         dcp::LocalTime(valid_to, i->utc_offset_hour(), i->utc_offset_minute()),
 365                                                         formulation,
 366                                                         disable_forensic_marking_picture,
 367                                                         disable_forensic_marking_audio
 368                                                         )
 369                                                 )
 370                                         )
 371                                 );
 372                 }
 373                 write_files (screen_kdms, zip, output, container_name_format, filename_format, values, verbose);
 374         } catch (FileError& e) {
 375                 cerr << program_name << ": " << e.what() << " (" << e.file().string() << ")\n";
 376                 exit (EXIT_FAILURE);
 377         } catch (KDMError& e) {
 378                 cerr << program_name << ": " << e.what() << "\n";
 379                 exit (EXIT_FAILURE);
 380         }
 381 }
 382
 383 void
 384 dump_dkdm_group (shared_ptr<DKDMGroup> group, int indent)
 385 {
 386         if (indent > 0) {
 387                 for (int i = 0; i < indent; ++i) {
 388                         cout << " ";
 389                 }
 390                 cout << group->name() << "\n";
 391         }
 392         BOOST_FOREACH (shared_ptr<DKDMBase> i, group->children()) {
 393                 shared_ptr<DKDMGroup> g = dynamic_pointer_cast<DKDMGroup>(i);
 394                 if (g) {
 395                         dump_dkdm_group (g, indent + 2);
 396                 } else {
 397                         for (int j = 0; j < indent; ++j) {
 398                                 cout << " ";
 399                         }
 400                         shared_ptr<DKDM> d = dynamic_pointer_cast<DKDM>(i);
 401                         assert(d);
 402                         cout << d->dkdm().cpl_id() << "\n";
 403                 }
 404         }
 405 }
 406
 407 int main (int argc, char* argv[])
 408 {
 409         boost::filesystem::path output = ".";
 410         dcp::NameFormat container_name_format = Config::instance()->kdm_container_name_format();
 411         dcp::NameFormat filename_format = Config::instance()->kdm_filename_format();
 412         optional<string> cinema_name;
 413         shared_ptr<Cinema> cinema;
 414         string screen_description = "";
 415         list<shared_ptr<Screen> > screens;
 416         optional<dcp::EncryptedKDM> dkdm;
 417         optional<boost::posix_time::ptime> valid_from;
 418         optional<boost::posix_time::ptime> valid_to;
 419         bool zip = false;
 420         bool list_cinemas = false;
 421         bool list_dkdm_cpls = false;
 422         optional<string> duration_string;
 423         bool verbose = false;
 424         dcp::Formulation formulation = dcp::MODIFIED_TRANSITIONAL_1;
 425         bool disable_forensic_marking_picture = false;
 426         optional<int> disable_forensic_marking_audio;
 427
 428         program_name = argv[0];
 429
 430         int option_index = 0;
 431         while (true) {
 432                 static struct option long_options[] = {
 433                         { "help", no_argument, 0, 'h'},
 434                         { "output", required_argument, 0, 'o'},
 435                         { "filename-format", required_argument, 0, 'K'},
 436                         { "container-name-format", required_argument, 0, 'Z'},
 437                         { "valid-from", required_argument, 0, 'f'},
 438                         { "valid-to", required_argument, 0, 't'},
 439                         { "valid-duration", required_argument, 0, 'd'},
 440                         { "formulation", required_argument, 0, 'F' },
 441                         { "disable-forensic-marking-picture", no_argument, 0, 'p' },
 442                         { "disable-forensic-marking-audio", optional_argument, 0, 'a' },
 443                         { "zip", no_argument, 0, 'z' },
 444                         { "verbose", no_argument, 0, 'v' },
 445                         { "cinema", required_argument, 0, 'c' },
 446                         { "screen", required_argument, 0, 'S' },
 447                         { "certificate", required_argument, 0, 'C' },
 448                         { "trusted-device", required_argument, 0, 'T' },
 449                         { "list-cinemas", no_argument, 0, 'B' },
 450                         { "list-dkdm-cpls", no_argument, 0, 'D' },
 451                         { 0, 0, 0, 0 }
 452                 };
 453
 454                 int c = getopt_long (argc, argv, "ho:K:Z:f:t:d:F:pa::zvc:S:C:T:BD", long_options, &option_index);
 455
 456                 if (c == -1) {
 457                         break;
 458                 }
 459
 460                 switch (c) {
 461                 case 'h':
 462                         help ();
 463                         exit (EXIT_SUCCESS);
 464                 case 'o':
 465                         output = optarg;
 466                         break;
 467                 case 'K':
 468                         filename_format = dcp::NameFormat (optarg);
 469                         break;
 470                 case 'Z':
 471                         container_name_format = dcp::NameFormat (optarg);
 472                         break;
 473                 case 'f':
 474                         valid_from = time_from_string (optarg);
 475                         break;
 476                 case 't':
 477                         valid_to = time_from_string (optarg);
 478                         break;
 479                 case 'd':
 480                         duration_string = optarg;
 481                         break;
 482                 case 'F':
 483                         if (string (optarg) == "modified-transitional-1") {
 484                                 formulation = dcp::MODIFIED_TRANSITIONAL_1;
 485                         } else if (string (optarg) == "multiple-modified-transitional-1") {
 486                                 formulation = dcp::MULTIPLE_MODIFIED_TRANSITIONAL_1;
 487                         } else if (string (optarg) == "dci-any") {
 488                                 formulation = dcp::DCI_ANY;
 489                         } else if (string (optarg) == "dci-specific") {
 490                                 formulation = dcp::DCI_SPECIFIC;
 491                         } else {
 492                                 error ("unrecognised KDM formulation " + string (optarg));
 493                         }
 494                         break;
 495                 case 'p':
 496                         disable_forensic_marking_picture = true;
 497                         break;
 498                 case 'a':
 499                         disable_forensic_marking_audio = 0;
 500                         if (optarg == 0 && argv[optind] != 0 && argv[optind][0] != '-') {
 501                                 disable_forensic_marking_audio = atoi (argv[optind++]);
 502                         } else if (optarg) {
 503                                 disable_forensic_marking_audio = atoi (optarg);
 504                         }
 505                         break;
 506                 case 'z':
 507                         zip = true;
 508                         break;
 509                 case 'v':
 510                         verbose = true;
 511                         break;
 512                 case 'c':
 513                         /* This could be a cinema to search for in the configured list or the name of a cinema being
 514                            built up on-the-fly in the option.  Cater for both possilibities here by storing the name
 515                            (for lookup) and by creating a Cinema which the next Screen will be added to.
 516                         */
 517                         cinema_name = optarg;
 518                         cinema = shared_ptr<Cinema> (new Cinema (optarg, list<string>(), "", 0, 0));
 519                         break;
 520                 case 'S':
 521                         screen_description = optarg;
 522                         break;
 523                 case 'C':
 524                 {
 525                         /* Make a new screen and add it to the current cinema */
 526                         dcp::CertificateChain chain (dcp::file_to_string(optarg));
 527                         shared_ptr<Screen> screen (new Screen (screen_description, "", chain.leaf(), vector<TrustedDevice>()));
 528                         if (cinema) {
 529                                 cinema->add_screen (screen);
 530                         }
 531                         screens.push_back (screen);
 532                         break;
 533                 }
 534                 case 'T':
 535                         /* A trusted device ends up in the last screen we made */
 536                         if (!screens.empty ()) {
 537                                 screens.back()->trusted_devices.push_back(TrustedDevice(dcp::Certificate(dcp::file_to_string(optarg))));
 538                         }
 539                         break;
 540                 case 'B':
 541                         list_cinemas = true;
 542                         break;
 543                 case 'D':
 544                         list_dkdm_cpls = true;
 545                         break;
 546                 }
 547         }
 548
 549         if (list_cinemas) {
 550                 BOOST_FOREACH(shared_ptr<Cinema> i, Config::instance()->cinemas()) {
 551                         cout << i->name << " (" << Emailer::address_list(i->emails) << ")\n";
 552                 }
 553                 exit (EXIT_SUCCESS);
 554         }
 555
 556         if (list_dkdm_cpls) {
 557                 dump_dkdm_group (Config::instance()->dkdms(), 0);
 558                 exit (EXIT_SUCCESS);
 559         }
 560
 561         if (!duration_string && !valid_to) {
 562                 error ("you must specify a --valid-duration or --valid-to");
 563         }
 564
 565         if (!valid_from) {
 566                 error ("you must specify --valid-from");
 567                 exit (EXIT_FAILURE);
 568         }
 569
 570         if (optind >= argc) {
 571                 help ();
 572                 exit (EXIT_FAILURE);
 573         }
 574
 575         if (screens.empty()) {
 576                 if (!cinema_name) {
 577                         error ("you must specify either a cinema or one or more screens using certificate files");
 578                 }
 579
 580                 screens = find_cinema (*cinema_name)->screens ();
 581         }
 582
 583         if (duration_string) {
 584                 valid_to = valid_from.get() + duration_from_string (*duration_string);
 585         }
 586
 587         dcpomatic_setup_path_encoding ();
 588         dcpomatic_setup ();
 589
 590         if (verbose) {
 591                 cout << "Making KDMs valid from " << valid_from.get() << " to " << valid_to.get() << "\n";
 592         }
 593
 594         string const thing = argv[optind];
 595         if (boost::filesystem::is_directory(thing) && boost::filesystem::is_regular_file(boost::filesystem::path(thing) / "metadata.xml")) {
 596                 from_film (
 597                         screens,
 598                         thing,
 599                         verbose,
 600                         output,
 601                         container_name_format,
 602                         filename_format,
 603                         *valid_from,
 604                         *valid_to,
 605                         formulation,
 606                         disable_forensic_marking_picture,
 607                         disable_forensic_marking_audio,
 608                         zip
 609                         );
 610         } else {
 611                 if (boost::filesystem::is_regular_file(thing)) {
 612                         dkdm = dcp::EncryptedKDM (dcp::file_to_string (thing));
 613                 } else {
 614                         dkdm = find_dkdm (thing);
 615                 }
 616
 617                 if (!dkdm) {
 618                         error ("could not find film or CPL ID corresponding to " + thing);
 619                 }
 620
 621                 from_dkdm (
 622                         screens,
 623                         dcp::DecryptedKDM (*dkdm, Config::instance()->decryption_chain()->key().get()),
 624                         verbose,
 625                         output,
 626                         container_name_format,
 627                         filename_format,
 628                         *valid_from,
 629                         *valid_to,
 630                         formulation,
 631                         disable_forensic_marking_picture,
 632                         disable_forensic_marking_audio,
 633                         zip
 634                         );
 635         }
 636
 637         return 0;
 638 }