test/kdm_test.cc

   1 /*
   2     Copyright (C) 2013-2014 Carl Hetherington <cth@carlh.net>
   3
   4     This file is part of libdcp.
   5
   6     libdcp 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     libdcp 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 libdcp.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "encrypted_kdm.h"
  21 #include "decrypted_kdm.h"
  22 #include "certificate_chain.h"
  23 #include "util.h"
  24 #include "test.h"
  25 #include <libcxml/cxml.h>
  26 #include <libxml++/libxml++.h>
  27 #include <boost/test/unit_test.hpp>
  28 #include <boost/foreach.hpp>
  29
  30 using std::list;
  31 using std::string;
  32 using std::vector;
  33 using boost::shared_ptr;
  34
  35 /** Check reading and decryption of a KDM */
  36 BOOST_AUTO_TEST_CASE (kdm_test)
  37 {
  38         dcp::DecryptedKDM kdm (
  39                 dcp::EncryptedKDM (
  40                         dcp::file_to_string ("test/data/kdm_TONEPLATES-SMPTE-ENC_.smpte-430-2.ROOT.NOT_FOR_PRODUCTION_20130706_20230702_CAR_OV_t1_8971c838.xml")
  41                         ),
  42                 dcp::file_to_string ("test/data/private.key")
  43                 );
  44
  45         list<dcp::DecryptedKDMKey> keys = kdm.keys ();
  46
  47         BOOST_CHECK_EQUAL (keys.size(), 2);
  48
  49         BOOST_CHECK_EQUAL (keys.front().cpl_id(), "eece17de-77e8-4a55-9347-b6bab5724b9f");
  50         BOOST_CHECK_EQUAL (keys.front().id(), "4ac4f922-8239-4831-b23b-31426d0542c4");
  51         BOOST_CHECK_EQUAL (keys.front().key().hex(), "8a2729c3e5b65c45d78305462104c3fb");
  52
  53         BOOST_CHECK_EQUAL (keys.back().cpl_id(), "eece17de-77e8-4a55-9347-b6bab5724b9f");
  54         BOOST_CHECK_EQUAL (keys.back().id(), "73baf5de-e195-4542-ab28-8a465f7d4079");
  55         BOOST_CHECK_EQUAL (keys.back().key().hex(), "5327fb7ec2e807bd57059615bf8a169d");
  56 }
  57
  58 /** Check that we can read in a KDM and then write it back out again the same */
  59 BOOST_AUTO_TEST_CASE (kdm_passthrough_test)
  60 {
  61         dcp::EncryptedKDM kdm (
  62                 dcp::file_to_string ("test/data/kdm_TONEPLATES-SMPTE-ENC_.smpte-430-2.ROOT.NOT_FOR_PRODUCTION_20130706_20230702_CAR_OV_t1_8971c838.xml")
  63                 );
  64
  65         shared_ptr<xmlpp::DomParser> parser (new xmlpp::DomParser ());
  66         parser->parse_memory (kdm.as_xml ());
  67         parser->get_document()->write_to_file_formatted ("build/kdm.xml", "UTF-8");
  68         int const r = system (
  69                 "xmldiff -c test/data/kdm_TONEPLATES-SMPTE-ENC_.smpte-430-2.ROOT.NOT_FOR_PRODUCTION_20130706_20230702_CAR_OV_t1_8971c838.xml build/kdm.xml"
  70                 );
  71
  72 #ifdef LIBDCP_WINDOWS
  73         BOOST_CHECK_EQUAL (r, 0);
  74 #else
  75         BOOST_CHECK_EQUAL (WEXITSTATUS (r), 0);
  76 #endif
  77 }
  78
  79 /** Test some of the utility methods of DecryptedKDM */
  80 BOOST_AUTO_TEST_CASE (decrypted_kdm_test)
  81 {
  82         uint8_t* data = new uint8_t[16];
  83         uint8_t* p = data;
  84         dcp::DecryptedKDM::put_uuid (&p, "8971c838-d0c3-405d-bc57-43afa9d91242");
  85
  86         BOOST_CHECK_EQUAL (data[0], 0x89);
  87         BOOST_CHECK_EQUAL (data[1], 0x71);
  88         BOOST_CHECK_EQUAL (data[2], 0xc8);
  89         BOOST_CHECK_EQUAL (data[3], 0x38);
  90         BOOST_CHECK_EQUAL (data[4], 0xd0);
  91         BOOST_CHECK_EQUAL (data[5], 0xc3);
  92         BOOST_CHECK_EQUAL (data[6], 0x40);
  93         BOOST_CHECK_EQUAL (data[7], 0x5d);
  94         BOOST_CHECK_EQUAL (data[8], 0xbc);
  95         BOOST_CHECK_EQUAL (data[9], 0x57);
  96         BOOST_CHECK_EQUAL (data[10], 0x43);
  97         BOOST_CHECK_EQUAL (data[11], 0xaf);
  98         BOOST_CHECK_EQUAL (data[12], 0xa9);
  99         BOOST_CHECK_EQUAL (data[13], 0xd9);
 100         BOOST_CHECK_EQUAL (data[14], 0x12);
 101         BOOST_CHECK_EQUAL (data[15], 0x42);
 102
 103         p = data;
 104         BOOST_CHECK_EQUAL (dcp::DecryptedKDM::get_uuid (&p), "8971c838-d0c3-405d-bc57-43afa9d91242");
 105
 106         delete[] data;
 107 }
 108
 109 /** Check that <KeyType> tags have the scope attribute.
 110  *  Wolfgang Woehl believes this is compulsory and I am more-or-less inclined to agree.
 111  */
 112 BOOST_AUTO_TEST_CASE (kdm_key_type_scope)
 113 {
 114         dcp::EncryptedKDM kdm (
 115                 dcp::file_to_string ("test/data/kdm_TONEPLATES-SMPTE-ENC_.smpte-430-2.ROOT.NOT_FOR_PRODUCTION_20130706_20230702_CAR_OV_t1_8971c838.xml")
 116                 );
 117
 118         cxml::Document doc;
 119         doc.read_string (kdm.as_xml ());
 120
 121         list<cxml::NodePtr> typed_key_ids = doc.node_child("AuthenticatedPublic")->
 122                 node_child("RequiredExtensions")->
 123                 node_child("KDMRequiredExtensions")->
 124                 node_child("KeyIdList")->
 125                 node_children("TypedKeyId");
 126
 127         BOOST_FOREACH (cxml::NodePtr i, typed_key_ids) {
 128                 BOOST_FOREACH (cxml::NodePtr j, i->node_children("KeyType")) {
 129                         BOOST_CHECK (j->string_attribute("scope") == "http://www.smpte-ra.org/430-1/2006/KDM#kdm-key-type");
 130                 }
 131         }
 132 }
 133
 134 static cxml::ConstNodePtr
 135 kdm_forensic_test (cxml::Document& doc, int picture, int audio)
 136 {
 137         dcp::DecryptedKDM decrypted (
 138                 dcp::EncryptedKDM (
 139                         dcp::file_to_string ("test/data/kdm_TONEPLATES-SMPTE-ENC_.smpte-430-2.ROOT.NOT_FOR_PRODUCTION_20130706_20230702_CAR_OV_t1_8971c838.xml")
 140                         ),
 141                 dcp::file_to_string ("test/data/private.key")
 142                 );
 143
 144         shared_ptr<dcp::CertificateChain> signer(new dcp::CertificateChain(dcp::file_to_string("test/data/certificate_chain")));
 145         signer->set_key(dcp::file_to_string("test/data/private.key"));
 146
 147         dcp::EncryptedKDM kdm = decrypted.encrypt (
 148                 signer, signer->leaf(), vector<dcp::Certificate>(), dcp::MODIFIED_TRANSITIONAL_1, picture, audio
 149                 );
 150
 151         /* Check that we can pass this through correctly */
 152         BOOST_CHECK_EQUAL (kdm.as_xml(), dcp::EncryptedKDM(kdm.as_xml()).as_xml());
 153
 154         doc.read_string (kdm.as_xml());
 155
 156         return doc.node_child("AuthenticatedPublic")->
 157                 node_child("RequiredExtensions")->
 158                 node_child("KDMRequiredExtensions")->
 159                 optional_node_child("ForensicMarkFlagList");
 160 }
 161
 162 /** Check ForensicMarkFlagList handling: disable picture and all audio */
 163 BOOST_AUTO_TEST_CASE (kdm_forensic_test1)
 164 {
 165         cxml::Document doc;
 166         cxml::ConstNodePtr forensic = kdm_forensic_test(doc, -1, -1);
 167         BOOST_REQUIRE (forensic);
 168         list<cxml::NodePtr> flags = forensic->node_children("ForensicMarkFlag");
 169         BOOST_REQUIRE_EQUAL (flags.size(), 2);
 170         BOOST_CHECK_EQUAL (flags.front()->content(), "http://www.smpte-ra.org/430-1/2006/KDM#mrkflg-picture-disable");
 171         BOOST_CHECK_EQUAL (flags.back()->content(), "http://www.smpte-ra.org/430-1/2006/KDM#mrkflg-audio-disable");
 172 }
 173
 174 /** Check ForensicMarkFlagList handling: disable picture but not audio */
 175 BOOST_AUTO_TEST_CASE (kdm_forensic_test2)
 176 {
 177         cxml::Document doc;
 178         cxml::ConstNodePtr forensic = kdm_forensic_test(doc, -1, 0);
 179         BOOST_REQUIRE (forensic);
 180         list<cxml::NodePtr> flags = forensic->node_children("ForensicMarkFlag");
 181         BOOST_REQUIRE_EQUAL (flags.size(), 1);
 182         BOOST_CHECK_EQUAL (flags.front()->content(), "http://www.smpte-ra.org/430-1/2006/KDM#mrkflg-picture-disable");
 183 }
 184
 185 /** Check ForensicMarkFlagList handling: disable audio but not picture */
 186 BOOST_AUTO_TEST_CASE (kdm_forensic_test3)
 187 {
 188         cxml::Document doc;
 189         cxml::ConstNodePtr forensic = kdm_forensic_test(doc, 0, -1);
 190         BOOST_REQUIRE (forensic);
 191         list<cxml::NodePtr> flags = forensic->node_children("ForensicMarkFlag");
 192         BOOST_REQUIRE_EQUAL (flags.size(), 1);
 193         BOOST_CHECK_EQUAL (flags.front()->content(), "http://www.smpte-ra.org/430-1/2006/KDM#mrkflg-audio-disable");
 194 }
 195
 196 /** Check ForensicMarkFlagList handling: disable picture and audio above channel 3 */
 197 BOOST_AUTO_TEST_CASE (kdm_forensic_test4)
 198 {
 199         cxml::Document doc;
 200         cxml::ConstNodePtr forensic = kdm_forensic_test(doc, -1, 3);
 201         BOOST_REQUIRE (forensic);
 202         list<cxml::NodePtr> flags = forensic->node_children("ForensicMarkFlag");
 203         BOOST_REQUIRE_EQUAL (flags.size(), 2);
 204         BOOST_CHECK_EQUAL (flags.front()->content(), "http://www.smpte-ra.org/430-1/2006/KDM#mrkflg-picture-disable");
 205         BOOST_CHECK_EQUAL (flags.back()->content(), "http://www.smpte-ra.org/430-1/2006/KDM#mrkflg-audio-disable-above-channel-3");
 206 }
 207
 208 /** Check ForensicMarkFlagList handling: disable neither */
 209 BOOST_AUTO_TEST_CASE (kdm_forensic_test5)
 210 {
 211         cxml::Document doc;
 212         cxml::ConstNodePtr forensic = kdm_forensic_test(doc, 0, 0);
 213         BOOST_CHECK (!forensic);
 214 }