src/lib/dcp.cc

   1 /*
   2     Copyright (C) 2014-2018 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 #include "dcp.h"
  22 #include "config.h"
  23 #include "film.h"
  24 #include "log.h"
  25 #include "dcpomatic_log.h"
  26 #include "compose.hpp"
  27 #include "dcp_content.h"
  28 #include <dcp/dcp.h>
  29 #include <dcp/decrypted_kdm.h>
  30 #include <dcp/exceptions.h>
  31 #include <boost/foreach.hpp>
  32
  33 #include "i18n.h"
  34
  35 using std::list;
  36 using std::string;
  37 using boost::shared_ptr;
  38 using boost::dynamic_pointer_cast;
  39
  40 dcp::DecryptedKDM
  41 DCP::decrypted_kdm () const
  42 {
  43         try {
  44                 return dcp::DecryptedKDM (_dcp_content->kdm().get(), Config::instance()->decryption_chain()->key().get());
  45         } catch (dcp::KDMDecryptionError& e) {
  46                 /* Try to flesh out the error a bit */
  47                 string const kdm_subject_name = _dcp_content->kdm()->recipient_x509_subject_name();
  48                 bool on_chain = false;
  49                 shared_ptr<const dcp::CertificateChain> dc = Config::instance()->decryption_chain();
  50                 BOOST_FOREACH (dcp::Certificate i, dc->root_to_leaf()) {
  51                         if (i.subject() == kdm_subject_name) {
  52                                 on_chain = true;
  53                         }
  54                 }
  55                 if (!on_chain) {
  56                         throw KDMError (_("KDM was not made for DCP-o-matic's decryption certificate."), e.what());
  57                 } else if (on_chain && kdm_subject_name != dc->leaf().subject()) {
  58                         throw KDMError (_("KDM was made for DCP-o-matic but not for its leaf certificate."), e.what());
  59                 } else {
  60                         throw;
  61                 }
  62         }
  63 }
  64
  65 /** Find all the CPLs in our directories, cross-add assets and return the CPLs */
  66 list<shared_ptr<dcp::CPL> >
  67 DCP::cpls () const
  68 {
  69         list<shared_ptr<dcp::DCP> > dcps;
  70         list<shared_ptr<dcp::CPL> > cpls;
  71
  72         LOG_GENERAL ("Reading %1 DCP directories", _dcp_content->directories().size());
  73         BOOST_FOREACH (boost::filesystem::path i, _dcp_content->directories()) {
  74                 shared_ptr<dcp::DCP> dcp (new dcp::DCP (i));
  75                 list<dcp::VerificationNote> notes;
  76                 dcp->read (&notes, true);
  77                 if (!_tolerant) {
  78                         /** We accept and ignore EmptyAssetPathError but everything else is bad */
  79                         BOOST_FOREACH (dcp::VerificationNote j, notes) {
  80                                 if (j.code() == dcp::VerificationNote::EMPTY_ASSET_PATH) {
  81                                         LOG_WARNING("Empty path in ASSETMAP of %1", i.string());
  82                                 } else {
  83                                         boost::throw_exception(dcp::DCPReadError(dcp::note_to_string(j)));
  84                                 }
  85                         }
  86                 }
  87                 dcps.push_back (dcp);
  88                 LOG_GENERAL ("Reading DCP %1: %2 CPLs", i.string(), dcp->cpls().size());
  89                 BOOST_FOREACH (shared_ptr<dcp::CPL> i, dcp->cpls()) {
  90                         cpls.push_back (i);
  91                 }
  92         }
  93
  94         BOOST_FOREACH (shared_ptr<dcp::DCP> i, dcps) {
  95                 BOOST_FOREACH (shared_ptr<dcp::DCP> j, dcps) {
  96                         if (i != j) {
  97                                 i->resolve_refs (j->assets (true));
  98                         }
  99                 }
 100         }
 101
 102         if (_dcp_content->kdm ()) {
 103                 dcp::DecryptedKDM k = decrypted_kdm ();
 104                 BOOST_FOREACH (shared_ptr<dcp::DCP> i, dcps) {
 105                         i->add (k);
 106                 }
 107         }
 108
 109         return cpls;
 110 }