src/lib/screen.cc

   1 /*
   2     Copyright (C) 2013-2020 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 "screen.h"
  22 #include "kdm_with_metadata.h"
  23 #include "film.h"
  24 #include "cinema.h"
  25 #include <libxml++/libxml++.h>
  26 #include <boost/foreach.hpp>
  27 #include <boost/algorithm/string.hpp>
  28 #include <boost/date_time/posix_time/posix_time.hpp>
  29
  30 using std::string;
  31 using std::vector;
  32 using boost::shared_ptr;
  33 using boost::optional;
  34 using namespace dcpomatic;
  35
  36 Screen::Screen (cxml::ConstNodePtr node)
  37         : name (node->string_child("Name"))
  38         , notes (node->optional_string_child("Notes").get_value_or (""))
  39 {
  40         if (node->optional_string_child ("Certificate")) {
  41                 recipient = dcp::Certificate (node->string_child ("Certificate"));
  42         } else if (node->optional_string_child ("Recipient")) {
  43                 recipient = dcp::Certificate (node->string_child ("Recipient"));
  44         }
  45
  46         BOOST_FOREACH (cxml::ConstNodePtr i, node->node_children ("TrustedDevice")) {
  47                 if (boost::algorithm::starts_with(i->content(), "-----BEGIN CERTIFICATE-----")) {
  48                         trusted_devices.push_back (TrustedDevice(dcp::Certificate(i->content())));
  49                 } else {
  50                         trusted_devices.push_back (TrustedDevice(i->content()));
  51                 }
  52         }
  53 }
  54
  55 void
  56 Screen::as_xml (xmlpp::Element* parent) const
  57 {
  58         parent->add_child("Name")->add_child_text (name);
  59         if (recipient) {
  60                 parent->add_child("Recipient")->add_child_text (recipient->certificate (true));
  61         }
  62
  63         parent->add_child("Notes")->add_child_text (notes);
  64
  65         BOOST_FOREACH (TrustedDevice i, trusted_devices) {
  66                 parent->add_child("TrustedDevice")->add_child_text(i.as_string());
  67         }
  68 }
  69
  70 vector<string>
  71 Screen::trusted_device_thumbprints () const
  72 {
  73         vector<string> t;
  74         BOOST_FOREACH (TrustedDevice i, trusted_devices) {
  75                 t.push_back (i.thumbprint());
  76         }
  77         return t;
  78 }
  79
  80 TrustedDevice::TrustedDevice (string thumbprint)
  81         : _thumbprint (thumbprint)
  82 {
  83
  84 }
  85
  86 TrustedDevice::TrustedDevice (dcp::Certificate certificate)
  87         : _certificate (certificate)
  88 {
  89
  90 }
  91
  92 string
  93 TrustedDevice::as_string () const
  94 {
  95         if (_certificate) {
  96                 return _certificate->certificate(true);
  97         }
  98
  99         return *_thumbprint;
 100 }
 101
 102 string
 103 TrustedDevice::thumbprint () const
 104 {
 105         if (_certificate) {
 106                 return _certificate->thumbprint ();
 107         }
 108
 109         return *_thumbprint;
 110 }
 111
 112
 113 KDMWithMetadataPtr
 114 kdm_for_screen (
 115         shared_ptr<const Film> film,
 116         boost::filesystem::path cpl,
 117         shared_ptr<const dcpomatic::Screen> screen,
 118         boost::posix_time::ptime valid_from,
 119         boost::posix_time::ptime valid_to,
 120         dcp::Formulation formulation,
 121         bool disable_forensic_marking_picture,
 122         optional<int> disable_forensic_marking_audio
 123         )
 124 {
 125         if (!screen->recipient) {
 126                 return KDMWithMetadataPtr();
 127         }
 128
 129         shared_ptr<const Cinema> cinema = screen->cinema;
 130         dcp::LocalTime const begin(valid_from, cinema ? cinema->utc_offset_hour() : 0, cinema ? cinema->utc_offset_minute() : 0);
 131         dcp::LocalTime const end  (valid_to,   cinema ? cinema->utc_offset_hour() : 0, cinema ? cinema->utc_offset_minute() : 0);
 132
 133         dcp::EncryptedKDM const kdm = film->make_kdm (
 134                         screen->recipient.get(),
 135                         screen->trusted_device_thumbprints(),
 136                         cpl,
 137                         begin,
 138                         end,
 139                         formulation,
 140                         disable_forensic_marking_picture,
 141                         disable_forensic_marking_audio
 142                         );
 143
 144         dcp::NameFormat::Map name_values;
 145         if (cinema) {
 146                 name_values['c'] = cinema->name;
 147         }
 148         name_values['s'] = screen->name;
 149         name_values['f'] = film->name();
 150         name_values['b'] = begin.date() + " " + begin.time_of_day(true, false);
 151         name_values['e'] = end.date() + " " + end.time_of_day(true, false);
 152         name_values['i'] = kdm.cpl_id();
 153
 154         return KDMWithMetadataPtr(new DCPKDMWithMetadata(name_values, cinema, kdm));
 155 }
 156