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 /** Find all the CPLs in our directories, cross-add assets and return the CPLs */
  41 list<shared_ptr<dcp::CPL> >
  42 DCP::cpls () const
  43 {
  44         list<shared_ptr<dcp::DCP> > dcps;
  45         list<shared_ptr<dcp::CPL> > cpls;
  46         LOG_GENERAL ("Reading %1 DCP directories", _dcp_content->directories().size());
  47         BOOST_FOREACH (boost::filesystem::path i, _dcp_content->directories()) {
  48                 shared_ptr<dcp::DCP> dcp (new dcp::DCP (i));
  49                 list<shared_ptr<dcp::DCPReadError> > errors;
  50                 dcp->read (true, &errors, true);
  51                 /** We accept and ignore EmptyAssetPathError but everything else is bad */
  52                 BOOST_FOREACH (shared_ptr<dcp::DCPReadError> j, errors) {
  53                         if (dynamic_pointer_cast<dcp::EmptyAssetPathError>(j)) {
  54                                 LOG_WARNING("Empty path in ASSETMAP of %1", i.string());
  55                         } else {
  56                                 boost::throw_exception(*j.get());
  57                         }
  58                 }
  59                 dcps.push_back (dcp);
  60                 LOG_GENERAL ("Reading DCP %1: %2 CPLs", i.string(), dcp->cpls().size());
  61                 BOOST_FOREACH (shared_ptr<dcp::CPL> i, dcp->cpls()) {
  62                         cpls.push_back (i);
  63                 }
  64         }
  65
  66         BOOST_FOREACH (shared_ptr<dcp::DCP> i, dcps) {
  67                 BOOST_FOREACH (shared_ptr<dcp::DCP> j, dcps) {
  68                         if (i != j) {
  69                                 i->resolve_refs (j->assets (true));
  70                         }
  71                 }
  72         }
  73
  74         if (_dcp_content->kdm ()) {
  75                 BOOST_FOREACH (shared_ptr<dcp::DCP> i, dcps) {
  76                         try {
  77                                 i->add (dcp::DecryptedKDM (_dcp_content->kdm().get(), Config::instance()->decryption_chain()->key().get ()));
  78                         } catch (dcp::KDMDecryptionError& e) {
  79                                 /* Flesh out the error a bit */
  80                                 string const kdm_subject_name = _dcp_content->kdm()->recipient_x509_subject_name();
  81                                 bool on_chain = false;
  82                                 shared_ptr<const dcp::CertificateChain> dc = Config::instance()->decryption_chain();
  83                                 BOOST_FOREACH (dcp::Certificate i, dc->root_to_leaf()) {
  84                                         if (i.subject() == kdm_subject_name) {
  85                                                 on_chain = true;
  86                                         }
  87                                 }
  88                                 if (!on_chain) {
  89                                         throw KDMError (_("KDM was not made for DCP-o-matic's decryption certificate."), e.what());
  90                                 } else if (on_chain && kdm_subject_name != dc->leaf().subject()) {
  91                                         throw KDMError (_("KDM was made for DCP-o-matic but not for its leaf certificate."), e.what());
  92                                 }
  93                         }
  94                 }
  95         }
  96
  97         return cpls;
  98 }