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 "dcp_content.h"
  24 #include <dcp/dcp.h>
  25 #include <dcp/decrypted_kdm.h>
  26 #include <dcp/exceptions.h>
  27 #include <boost/foreach.hpp>
  28
  29 #include "i18n.h"
  30
  31 using std::list;
  32 using std::string;
  33 using boost::shared_ptr;
  34
  35 /** Find all the CPLs in our directories, cross-add assets and return the CPLs */
  36 list<shared_ptr<dcp::CPL> >
  37 DCP::cpls () const
  38 {
  39         list<shared_ptr<dcp::DCP> > dcps;
  40         list<shared_ptr<dcp::CPL> > cpls;
  41
  42         BOOST_FOREACH (boost::filesystem::path i, _dcp_content->directories()) {
  43                 shared_ptr<dcp::DCP> dcp (new dcp::DCP (i));
  44                 dcp->read (false, 0, true);
  45                 dcps.push_back (dcp);
  46                 BOOST_FOREACH (shared_ptr<dcp::CPL> i, dcp->cpls()) {
  47                         cpls.push_back (i);
  48                 }
  49         }
  50
  51         BOOST_FOREACH (shared_ptr<dcp::DCP> i, dcps) {
  52                 BOOST_FOREACH (shared_ptr<dcp::DCP> j, dcps) {
  53                         if (i != j) {
  54                                 i->resolve_refs (j->assets (true));
  55                         }
  56                 }
  57         }
  58
  59         if (_dcp_content->kdm ()) {
  60                 BOOST_FOREACH (shared_ptr<dcp::DCP> i, dcps) {
  61                         try {
  62                                 i->add (dcp::DecryptedKDM (_dcp_content->kdm().get(), Config::instance()->decryption_chain()->key().get ()));
  63                         } catch (dcp::KDMDecryptionError& e) {
  64                                 /* Flesh out the error a bit */
  65                                 string const kdm_subject_name = _dcp_content->kdm()->recipient_x509_subject_name();
  66                                 bool on_chain = false;
  67                                 shared_ptr<const dcp::CertificateChain> dc = Config::instance()->decryption_chain();
  68                                 BOOST_FOREACH (dcp::Certificate i, dc->root_to_leaf()) {
  69                                         if (i.subject() == kdm_subject_name) {
  70                                                 on_chain = true;
  71                                         }
  72                                 }
  73                                 if (!on_chain) {
  74                                         throw KDMError (_("KDM was not made for DCP-o-matic's decryption certificate."), e.what());
  75                                 } else if (on_chain && kdm_subject_name != dc->leaf().subject()) {
  76                                         throw KDMError (_("KDM was made for DCP-o-matic but not for its leaf certificate."), e.what());
  77                                 }
  78                         }
  79                 }
  80         }
  81
  82         return cpls;
  83 }