src/dcp.cc

   1 /*
   2     Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 /** @file  src/dcp.cc
  21  *  @brief A class to create a DCP.
  22  */
  23
  24 #include <sstream>
  25 #include <fstream>
  26 #include <iomanip>
  27 #include <cassert>
  28 #include <iostream>
  29 #include <boost/filesystem.hpp>
  30 #include <boost/lexical_cast.hpp>
  31 #include <libxml++/libxml++.h>
  32 #include <xmlsec/xmldsig.h>
  33 #include <xmlsec/app.h>
  34 #include "dcp.h"
  35 #include "asset.h"
  36 #include "sound_asset.h"
  37 #include "picture_asset.h"
  38 #include "subtitle_asset.h"
  39 #include "util.h"
  40 #include "metadata.h"
  41 #include "exceptions.h"
  42 #include "cpl_file.h"
  43 #include "pkl_file.h"
  44 #include "asset_map.h"
  45 #include "reel.h"
  46
  47 using std::string;
  48 using std::list;
  49 using std::stringstream;
  50 using std::ofstream;
  51 using std::ostream;
  52 using boost::shared_ptr;
  53 using namespace libdcp;
  54
  55 DCP::DCP (string directory)
  56         : _directory (directory)
  57         , _encrypted (false)
  58 {
  59         boost::filesystem::create_directories (directory);
  60 }
  61
  62 void
  63 DCP::write_xml () const
  64 {
  65         for (list<shared_ptr<const CPL> >::const_iterator i = _cpls.begin(); i != _cpls.end(); ++i) {
  66                 (*i)->write_xml (_encrypted, _certificates, _signer_key);
  67         }
  68
  69         string pkl_uuid = make_uuid ();
  70         string pkl_path = write_pkl (pkl_uuid);
  71
  72         write_volindex ();
  73         write_assetmap (pkl_uuid, boost::filesystem::file_size (pkl_path));
  74 }
  75
  76 std::string
  77 DCP::write_pkl (string pkl_uuid) const
  78 {
  79         assert (!_cpls.empty ());
  80
  81         boost::filesystem::path p;
  82         p /= _directory;
  83         stringstream s;
  84         s << pkl_uuid << "_pkl.xml";
  85         p /= s.str();
  86
  87         xmlpp::Document doc;
  88         xmlpp::Element* pkl = doc.create_root_node("PackingList", "http://www.smpte-ra.org/schemas/429-8/2007/PKL");
  89         if (_encrypted) {
  90                 pkl->set_namespace_declaration ("http://www.w3.org/2000/09/xmldsig#", "dsig");
  91         }
  92
  93         pkl->add_child("Id")->add_child_text ("urn:uuid:" + pkl_uuid);
  94         /* XXX: this is a bit of a hack */
  95         pkl->add_child("AnnotationText")->add_child_text(_cpls.front()->name());
  96         pkl->add_child("IssueDate")->add_child_text (Metadata::instance()->issue_date);
  97         pkl->add_child("Issuer")->add_child_text (Metadata::instance()->issuer);
  98         pkl->add_child("Creator")->add_child_text (Metadata::instance()->creator);
  99
 100         {
 101                 xmlpp::Element* asset_list = pkl->add_child("AssetList");
 102                 list<shared_ptr<const Asset> > a = assets ();
 103                 for (list<shared_ptr<const Asset> >::const_iterator i = a.begin(); i != a.end(); ++i) {
 104                         (*i)->write_to_pkl (asset_list);
 105                 }
 106
 107                 for (list<shared_ptr<const CPL> >::const_iterator i = _cpls.begin(); i != _cpls.end(); ++i) {
 108                         (*i)->write_to_pkl (asset_list);
 109                 }
 110         }
 111
 112         if (_encrypted) {
 113                 sign (pkl, _certificates, _signer_key);
 114         }
 115
 116         doc.write_to_file_formatted (p.string(), "UTF-8");
 117
 118         return p.string ();
 119 }
 120
 121 void
 122 DCP::write_volindex () const
 123 {
 124         boost::filesystem::path p;
 125         p /= _directory;
 126         p /= "VOLINDEX.xml";
 127         ofstream vi (p.string().c_str());
 128
 129         vi << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
 130            << "<VolumeIndex xmlns=\"http://www.smpte-ra.org/schemas/429-9/2007/AM\">\n"
 131            << "  <Index>1</Index>\n"
 132            << "</VolumeIndex>\n";
 133 }
 134
 135 void
 136 DCP::write_assetmap (string pkl_uuid, int pkl_length) const
 137 {
 138         boost::filesystem::path p;
 139         p /= _directory;
 140         p /= "ASSETMAP.xml";
 141         ofstream am (p.string().c_str());
 142
 143         am << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
 144            << "<AssetMap xmlns=\"http://www.smpte-ra.org/schemas/429-9/2007/AM\">\n"
 145            << "  <Id>urn:uuid:" << make_uuid() << "</Id>\n"
 146            << "  <Creator>" << Metadata::instance()->creator << "</Creator>\n"
 147            << "  <VolumeCount>1</VolumeCount>\n"
 148            << "  <IssueDate>" << Metadata::instance()->issue_date << "</IssueDate>\n"
 149            << "  <Issuer>" << Metadata::instance()->issuer << "</Issuer>\n"
 150            << "  <AssetList>\n";
 151
 152         am << "    <Asset>\n"
 153            << "      <Id>urn:uuid:" << pkl_uuid << "</Id>\n"
 154            << "      <PackingList>true</PackingList>\n"
 155            << "      <ChunkList>\n"
 156            << "        <Chunk>\n"
 157            << "          <Path>" << pkl_uuid << "_pkl.xml</Path>\n"
 158            << "          <VolumeIndex>1</VolumeIndex>\n"
 159            << "          <Offset>0</Offset>\n"
 160            << "          <Length>" << pkl_length << "</Length>\n"
 161            << "        </Chunk>\n"
 162            << "      </ChunkList>\n"
 163            << "    </Asset>\n";
 164
 165         for (list<shared_ptr<const CPL> >::const_iterator i = _cpls.begin(); i != _cpls.end(); ++i) {
 166                 (*i)->write_to_assetmap (am);
 167         }
 168
 169         list<shared_ptr<const Asset> > a = assets ();
 170         for (list<shared_ptr<const Asset> >::const_iterator i = a.begin(); i != a.end(); ++i) {
 171                 (*i)->write_to_assetmap (am);
 172         }
 173
 174         am << "  </AssetList>\n"
 175            << "</AssetMap>\n";
 176 }
 177
 178
 179 void
 180 DCP::read (bool require_mxfs)
 181 {
 182         Files files;
 183
 184         shared_ptr<AssetMap> asset_map;
 185         try {
 186                 boost::filesystem::path p = _directory;
 187                 p /= "ASSETMAP";
 188                 if (boost::filesystem::exists (p)) {
 189                         asset_map.reset (new AssetMap (p.string ()));
 190                 } else {
 191                         p = _directory;
 192                         p /= "ASSETMAP.xml";
 193                         if (boost::filesystem::exists (p)) {
 194                                 asset_map.reset (new AssetMap (p.string ()));
 195                         } else {
 196                                 throw DCPReadError ("could not find AssetMap file");
 197                         }
 198                 }
 199
 200         } catch (FileError& e) {
 201                 throw FileError ("could not load AssetMap file", files.asset_map);
 202         }
 203
 204         for (list<shared_ptr<AssetMapAsset> >::const_iterator i = asset_map->assets.begin(); i != asset_map->assets.end(); ++i) {
 205                 if ((*i)->chunks.size() != 1) {
 206                         throw XMLError ("unsupported asset chunk count");
 207                 }
 208
 209                 boost::filesystem::path t = _directory;
 210                 t /= (*i)->chunks.front()->path;
 211
 212                 if (ends_with (t.string(), ".mxf") || ends_with (t.string(), ".ttf")) {
 213                         continue;
 214                 }
 215
 216                 xmlpp::DomParser* p = new xmlpp::DomParser;
 217                 try {
 218                         p->parse_file (t.string());
 219                 } catch (std::exception& e) {
 220                         delete p;
 221                         continue;
 222                 }
 223
 224                 string const root = p->get_document()->get_root_node()->get_name ();
 225                 delete p;
 226
 227                 if (root == "CompositionPlaylist") {
 228                         files.cpls.push_back (t.string());
 229                 } else if (root == "PackingList") {
 230                         if (files.pkl.empty ()) {
 231                                 files.pkl = t.string();
 232                         } else {
 233                                 throw DCPReadError ("duplicate PKLs found");
 234                         }
 235                 }
 236         }
 237
 238         if (files.cpls.empty ()) {
 239                 throw FileError ("no CPL files found", "");
 240         }
 241
 242         if (files.pkl.empty ()) {
 243                 throw FileError ("no PKL file found", "");
 244         }
 245
 246         shared_ptr<PKLFile> pkl;
 247         try {
 248                 pkl.reset (new PKLFile (files.pkl));
 249         } catch (FileError& e) {
 250                 throw FileError ("could not load PKL file", files.pkl);
 251         }
 252
 253         /* Cross-check */
 254         /* XXX */
 255
 256         for (list<string>::iterator i = files.cpls.begin(); i != files.cpls.end(); ++i) {
 257                 _cpls.push_back (shared_ptr<CPL> (new CPL (_directory, *i, asset_map, require_mxfs)));
 258         }
 259 }
 260
 261 bool
 262 DCP::equals (DCP const & other, EqualityOptions opt, list<string>& notes) const
 263 {
 264         if (_cpls.size() != other._cpls.size()) {
 265                 notes.push_back ("CPL counts differ");
 266                 return false;
 267         }
 268
 269         list<shared_ptr<const CPL> >::const_iterator a = _cpls.begin ();
 270         list<shared_ptr<const CPL> >::const_iterator b = other._cpls.begin ();
 271
 272         while (a != _cpls.end ()) {
 273                 if (!(*a)->equals (*b->get(), opt, notes)) {
 274                         return false;
 275                 }
 276                 ++a;
 277                 ++b;
 278         }
 279
 280         return true;
 281 }
 282
 283
 284 void
 285 DCP::add_cpl (shared_ptr<CPL> cpl)
 286 {
 287         _cpls.push_back (cpl);
 288 }
 289
 290 class AssetComparator
 291 {
 292 public:
 293         bool operator() (shared_ptr<const Asset> a, shared_ptr<const Asset> b) {
 294                 return a->uuid() < b->uuid();
 295         }
 296 };
 297
 298 list<shared_ptr<const Asset> >
 299 DCP::assets () const
 300 {
 301         list<shared_ptr<const Asset> > a;
 302         for (list<shared_ptr<const CPL> >::const_iterator i = _cpls.begin(); i != _cpls.end(); ++i) {
 303                 list<shared_ptr<const Asset> > t = (*i)->assets ();
 304                 a.merge (t);
 305         }
 306
 307         a.sort (AssetComparator ());
 308         a.unique ();
 309         return a;
 310 }
 311
 312 CPL::CPL (string directory, string name, ContentKind content_kind, int length, int frames_per_second)
 313         : _directory (directory)
 314         , _name (name)
 315         , _content_kind (content_kind)
 316         , _length (length)
 317         , _fps (frames_per_second)
 318 {
 319         _uuid = make_uuid ();
 320 }
 321
 322 CPL::CPL (string directory, string file, shared_ptr<const AssetMap> asset_map, bool require_mxfs)
 323         : _directory (directory)
 324         , _content_kind (FEATURE)
 325         , _length (0)
 326         , _fps (0)
 327 {
 328         /* Read the XML */
 329         shared_ptr<CPLFile> cpl;
 330         try {
 331                 cpl.reset (new CPLFile (file));
 332         } catch (FileError& e) {
 333                 throw FileError ("could not load CPL file", file);
 334         }
 335
 336         /* Now cherry-pick the required bits into our own data structure */
 337
 338         _name = cpl->annotation_text;
 339         _content_kind = cpl->content_kind;
 340
 341         for (list<shared_ptr<CPLReel> >::iterator i = cpl->reels.begin(); i != cpl->reels.end(); ++i) {
 342
 343                 shared_ptr<Picture> p;
 344
 345                 if ((*i)->asset_list->main_picture) {
 346                         p = (*i)->asset_list->main_picture;
 347                 } else {
 348                         p = (*i)->asset_list->main_stereoscopic_picture;
 349                 }
 350
 351                 _fps = p->edit_rate.numerator;
 352                 _length += p->duration;
 353
 354                 shared_ptr<PictureAsset> picture;
 355                 shared_ptr<SoundAsset> sound;
 356                 shared_ptr<SubtitleAsset> subtitle;
 357
 358                 /* Some rather twisted logic to decide if we are 3D or not;
 359                    some DCPs give a MainStereoscopicPicture to indicate 3D, others
 360                    just have a FrameRate twice the EditRate and apparently
 361                    expect you to divine the fact that they are hence 3D.
 362                 */
 363
 364                 if (!(*i)->asset_list->main_stereoscopic_picture && p->edit_rate == p->frame_rate) {
 365
 366                         try {
 367                                 picture.reset (new MonoPictureAsset (
 368                                                        _directory,
 369                                                        asset_map->asset_from_id (p->id)->chunks.front()->path,
 370                                                        _fps,
 371                                                        (*i)->asset_list->main_picture->entry_point,
 372                                                        (*i)->asset_list->main_picture->duration
 373                                                        )
 374                                         );
 375                         } catch (MXFFileError) {
 376                                 if (require_mxfs) {
 377                                         throw;
 378                                 }
 379                         }
 380
 381                 } else {
 382
 383                         try {
 384                                 picture.reset (new StereoPictureAsset (
 385                                                        _directory,
 386                                                        asset_map->asset_from_id (p->id)->chunks.front()->path,
 387                                                        _fps,
 388                                                        p->entry_point,
 389                                                        p->duration
 390                                                        )
 391                                         );
 392                         } catch (MXFFileError) {
 393                                 if (require_mxfs) {
 394                                         throw;
 395                                 }
 396                         }
 397
 398                 }
 399
 400                 if ((*i)->asset_list->main_sound) {
 401
 402                         try {
 403                                 sound.reset (new SoundAsset (
 404                                                      _directory,
 405                                                      asset_map->asset_from_id ((*i)->asset_list->main_sound->id)->chunks.front()->path,
 406                                                      _fps,
 407                                                      (*i)->asset_list->main_sound->entry_point,
 408                                                      (*i)->asset_list->main_sound->duration
 409                                                      )
 410                                         );
 411                         } catch (MXFFileError) {
 412                                 if (require_mxfs) {
 413                                         throw;
 414                                 }
 415                         }
 416                 }
 417
 418                 if ((*i)->asset_list->main_subtitle) {
 419
 420                         subtitle.reset (new SubtitleAsset (
 421                                                 _directory,
 422                                                 asset_map->asset_from_id ((*i)->asset_list->main_subtitle->id)->chunks.front()->path
 423                                                 )
 424                                 );
 425                 }
 426
 427                 _reels.push_back (shared_ptr<Reel> (new Reel (picture, sound, subtitle)));
 428         }
 429 }
 430
 431 void
 432 CPL::add_reel (shared_ptr<const Reel> reel)
 433 {
 434         _reels.push_back (reel);
 435 }
 436
 437 void
 438 CPL::write_xml (bool encrypted, CertificateChain const & certificates, string const & signer_key) const
 439 {
 440         boost::filesystem::path p;
 441         p /= _directory;
 442         stringstream s;
 443         s << _uuid << "_cpl.xml";
 444         p /= s.str();
 445
 446         xmlpp::Document doc;
 447         xmlpp::Element* cpl = doc.create_root_node("CompositionPlaylist", "http://www.smpte-ra.org/schemas/429-7/2006/CPL");
 448
 449         if (encrypted) {
 450                 cpl->set_namespace_declaration ("http://www.w3.org/2000/09/xmldsig#", "dsig");
 451         }
 452
 453         cpl->add_child("Id")->add_child_text ("urn:uuid:" + _uuid);
 454         cpl->add_child("AnnotationText")->add_child_text (_name);
 455         cpl->add_child("IssueDate")->add_child_text (Metadata::instance()->issue_date);
 456         cpl->add_child("Creator")->add_child_text (Metadata::instance()->creator);
 457         cpl->add_child("ContentTitleText")->add_child_text (_name);
 458         cpl->add_child("ContentKind")->add_child_text (content_kind_to_string (_content_kind));
 459
 460         {
 461                 xmlpp::Element* cv = cpl->add_child ("ContentVersion");
 462                 cv->add_child("Id")->add_child_text ("urn:uri:" + _uuid + "_" + Metadata::instance()->issue_date);
 463                 cv->add_child("LabelText")->add_child_text (_uuid + "_" + Metadata::instance()->issue_date);
 464         }
 465
 466         cpl->add_child("RatingList");
 467
 468         xmlpp::Element* reel_list = cpl->add_child("ReelList");
 469         for (list<shared_ptr<const Reel> >::const_iterator i = _reels.begin(); i != _reels.end(); ++i) {
 470                 (*i)->write_to_cpl (reel_list);
 471         }
 472
 473         if (encrypted) {
 474                 sign (cpl, certificates, signer_key);
 475         }
 476
 477         doc.write_to_file_formatted (p.string(), "UTF-8");
 478
 479         _digest = make_digest (p.string (), 0);
 480         _length = boost::filesystem::file_size (p.string ());
 481 }
 482
 483 void
 484 CPL::write_to_pkl (xmlpp::Element* p) const
 485 {
 486         xmlpp::Element* asset = p->add_child("Asset");
 487         asset->add_child("Id")->add_child_text("urn:uuid:" + _uuid);
 488         asset->add_child("Hash")->add_child_text(_digest);
 489         asset->add_child("Size")->add_child_text(boost::lexical_cast<string> (_length));
 490         asset->add_child("Type")->add_child_text("text/xml");
 491 }
 492
 493 list<shared_ptr<const Asset> >
 494 CPL::assets () const
 495 {
 496         list<shared_ptr<const Asset> > a;
 497         for (list<shared_ptr<const Reel> >::const_iterator i = _reels.begin(); i != _reels.end(); ++i) {
 498                 if ((*i)->main_picture ()) {
 499                         a.push_back ((*i)->main_picture ());
 500                 }
 501                 if ((*i)->main_sound ()) {
 502                         a.push_back ((*i)->main_sound ());
 503                 }
 504                 if ((*i)->main_subtitle ()) {
 505                         a.push_back ((*i)->main_subtitle ());
 506                 }
 507         }
 508
 509         return a;
 510 }
 511
 512 void
 513 CPL::write_to_assetmap (ostream& s) const
 514 {
 515         s << "    <Asset>\n"
 516           << "      <Id>urn:uuid:" << _uuid << "</Id>\n"
 517           << "      <ChunkList>\n"
 518           << "        <Chunk>\n"
 519           << "          <Path>" << _uuid << "_cpl.xml</Path>\n"
 520           << "          <VolumeIndex>1</VolumeIndex>\n"
 521           << "          <Offset>0</Offset>\n"
 522           << "          <Length>" << _length << "</Length>\n"
 523           << "        </Chunk>\n"
 524           << "      </ChunkList>\n"
 525           << "    </Asset>\n";
 526 }
 527
 528
 529
 530 bool
 531 CPL::equals (CPL const & other, EqualityOptions opt, list<string>& notes) const
 532 {
 533         if (_name != other._name) {
 534                 notes.push_back ("names differ");
 535                 return false;
 536         }
 537
 538         if (_content_kind != other._content_kind) {
 539                 notes.push_back ("content kinds differ");
 540                 return false;
 541         }
 542
 543         if (_fps != other._fps) {
 544                 notes.push_back ("frames per second differ");
 545                 return false;
 546         }
 547
 548         if (_length != other._length) {
 549                 notes.push_back ("lengths differ");
 550                 return false;
 551         }
 552
 553         if (_reels.size() != other._reels.size()) {
 554                 notes.push_back ("reel counts differ");
 555                 return false;
 556         }
 557
 558         list<shared_ptr<const Reel> >::const_iterator a = _reels.begin ();
 559         list<shared_ptr<const Reel> >::const_iterator b = other._reels.begin ();
 560
 561         while (a != _reels.end ()) {
 562                 if (!(*a)->equals (*b, opt, notes)) {
 563                         return false;
 564                 }
 565                 ++a;
 566                 ++b;
 567         }
 568
 569         return true;
 570 }
 571
 572 shared_ptr<xmlpp::Document>
 573 CPL::make_kdm (CertificateChain const & certificates, string const & signer_key, shared_ptr<const Certificate> recipient_cert) const
 574 {
 575         shared_ptr<xmlpp::Document> doc (new xmlpp::Document);
 576         xmlpp::Element* root = doc->create_root_node ("DCinemaSecurityMessage");
 577         root->set_namespace_declaration ("http://www.smpte-ra.org/schemas/430-3/2006/ETM", "");
 578         root->set_namespace_declaration ("http://www.w3.org/2000/09/xmldsig#", "ds");
 579         root->set_namespace_declaration ("http://www.w3.org/2001/04/xmlenc#", "enc");
 580
 581         {
 582                 xmlpp::Element* authenticated_public = root->add_child("AuthenticatedPublic");
 583                 authenticated_public->set_attribute("Id", "ID_AuthenticatedPublic");
 584                 xmlAddID (0, doc->cobj(), (const xmlChar *) "ID_AuthenticatedPublic", authenticated_public->get_attribute("Id")->cobj());
 585
 586                 authenticated_public->add_child("MessageId")->add_child_text("urn:uuid:" + make_uuid());
 587                 authenticated_public->add_child("MessageType")->add_child_text("http://www.smpte-ra.org/430-1/2006/KDM#kdm-key-type");
 588                 authenticated_public->add_child("AnnotationText")->add_child_text(Metadata::instance()->product_name);
 589                 authenticated_public->add_child("IssueDate")->add_child_text(Metadata::instance()->issue_date);
 590
 591                 {
 592                         xmlpp::Element* signer = authenticated_public->add_child("Signer");
 593                         signer->add_child("X509IssuerName", "ds")->add_child_text (
 594                                 Certificate::name_for_xml (recipient_cert->issuer())
 595                                 );
 596                         signer->add_child("X509SerialNumber", "ds")->add_child_text (
 597                                 recipient_cert->serial()
 598                                 );
 599                 }
 600
 601                 {
 602                         xmlpp::Element* required_extensions = authenticated_public->add_child("RequiredExtensions");
 603
 604                         {
 605                                 xmlpp::Element* kdm_required_extensions = required_extensions->add_child("KDMRequiredExtensions");
 606                                 kdm_required_extensions->set_namespace_declaration ("http://www.smpte-ra.org/schemas/430-1/2006/KDM");
 607                                 {
 608                                         xmlpp::Element* recipient = kdm_required_extensions->add_child("Recipient");
 609                                         {
 610                                                 xmlpp::Element* serial_element = recipient->add_child("X509IssuerSerial");
 611                                                 serial_element->add_child("X509IssuerName", "ds")->add_child_text (
 612                                                         Certificate::name_for_xml (recipient_cert->issuer())
 613                                                         );
 614                                                 serial_element->add_child("X509SerialNumber", "ds")->add_child_text (
 615                                                         recipient_cert->serial()
 616                                                         );
 617                                         }
 618
 619                                         recipient->add_child("X509SubjectName")->add_child_text (Certificate::name_for_xml (recipient_cert->subject()));
 620                                 }
 621
 622                                 kdm_required_extensions->add_child("CompositionPlaylistId")->add_child_text("XXX");
 623                                 kdm_required_extensions->add_child("ContentTitleText")->add_child_text("XXX");
 624                                 kdm_required_extensions->add_child("ContentAuthenticator")->add_child_text("XXX");
 625                                 kdm_required_extensions->add_child("ContentKeysNotValidBefore")->add_child_text("XXX");
 626                                 kdm_required_extensions->add_child("ContentKeysNotValidAfter")->add_child_text("XXX");
 627
 628                                 {
 629                                         xmlpp::Element* authorized_device_info = kdm_required_extensions->add_child("AuthorizedDeviceInfo");
 630                                         authorized_device_info->add_child("DeviceListIdentifier")->add_child_text("urn:uuid:" + make_uuid());
 631                                         authorized_device_info->add_child("DeviceListDescription")->add_child_text(recipient_cert->subject());
 632                                         {
 633                                                 xmlpp::Element* device_list = authorized_device_info->add_child("DeviceList");
 634                                                 device_list->add_child("CertificateThumbprint")->add_child_text("XXX");
 635                                         }
 636                                 }
 637
 638                                 {
 639                                         xmlpp::Element* key_id_list = kdm_required_extensions->add_child("KeyIdList");
 640                                         list<shared_ptr<const Asset> > a = assets();
 641                                         for (list<shared_ptr<const Asset> >::iterator i = a.begin(); i != a.end(); ++i) {
 642                                                 /* XXX: non-MXF assets? */
 643                                                 shared_ptr<const MXFAsset> mxf = boost::dynamic_pointer_cast<const MXFAsset> (*i);
 644                                                 if (mxf) {
 645                                                         mxf->add_typed_key_id (key_id_list);
 646                                                 }
 647                                         }
 648                                 }
 649
 650                                 {
 651                                         xmlpp::Element* forensic_mark_flag_list = kdm_required_extensions->add_child("ForensicMarkFlagList");
 652                                         forensic_mark_flag_list->add_child("ForensicMarkFlag")->add_child_text (
 653                                                 "http://www.smpte-ra.org/430-1/2006/KDM#mrkflg-picture-disable"
 654                                                 );
 655                                         forensic_mark_flag_list->add_child("ForensicMarkFlag")->add_child_text (
 656                                                 "http://www.smpte-ra.org/430-1/2006/KDM#mrkflg-audio-disable"
 657                                                 );
 658                                 }
 659                         }
 660                 }
 661
 662                 authenticated_public->add_child("NonCriticalExtensions");
 663         }
 664
 665         {
 666                 xmlpp::Element* authenticated_private = root->add_child("AuthenticatedPrivate");
 667                 authenticated_private->set_attribute ("Id", "ID_AuthenticatedPrivate");
 668                 xmlAddID (0, doc->cobj(), (const xmlChar *) "ID_AuthenticatedPrivate", authenticated_private->get_attribute("Id")->cobj());
 669                 {
 670                         xmlpp::Element* encrypted_key = authenticated_private->add_child ("EncryptedKey", "enc");
 671                         {
 672                                 xmlpp::Element* encryption_method = encrypted_key->add_child ("EncryptionMethod", "enc");
 673                                 encryption_method->set_attribute ("Algorithm", "http://www.w3.org/2001/04/xmlenc#rsa-oaep-mgf1p");
 674                                 encryption_method->add_child("DigestMethod", "ds")->set_attribute("Algorithm", "http://www.w3.org/2000/09/xmldsig#sha1");
 675                         }
 676
 677                         xmlpp::Element* cipher_data = authenticated_private->add_child ("CipherData", "enc");
 678                         cipher_data->add_child("CipherValue", "enc")->add_child_text("XXX");
 679                 }
 680         }
 681
 682         /* XXX: x2 one for each mxf? */
 683
 684         {
 685                 xmlpp::Element* signature = root->add_child("Signature", "ds");
 686
 687                 {
 688                         xmlpp::Element* signed_info = signature->add_child("SignedInfo", "ds");
 689                         signed_info->add_child("CanonicalizationMethod", "ds")->set_attribute(
 690                                 "Algorithm", "http://www.w3.org/TR/2001/REC-xml-c14n-20010315#WithComments"
 691                                 );
 692                         signed_info->add_child("SignatureMethod", "ds")->set_attribute(
 693                                 "Algorithm", "http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"
 694                                 );
 695                         {
 696                                 xmlpp::Element* reference = signed_info->add_child("Reference", "ds");
 697                                 reference->set_attribute("URI", "#ID_AuthenticatedPublic");
 698                                 reference->add_child("DigestMethod", "ds")->set_attribute("Algorithm", "http://www.w3.org/2001/04/xmlenc#sha256");
 699                                 reference->add_child("DigestValue", "ds");
 700                         }
 701
 702                         {
 703                                 xmlpp::Element* reference = signed_info->add_child("Reference", "ds");
 704                                 reference->set_attribute("URI", "#ID_AuthenticatedPrivate");
 705                                 reference->add_child("DigestMethod", "ds")->set_attribute("Algorithm", "http://www.w3.org/2001/04/xmlenc#sha256");
 706                                 reference->add_child("DigestValue", "ds");
 707                         }
 708                 }
 709
 710                 add_signature_value (signature, certificates, signer_key, "ds");
 711         }
 712
 713         return doc;
 714 }