#include <iostream>
#include <fstream>
#include <boost/filesystem.hpp>
+#include <boost/lexical_cast.hpp>
+#include <libxml++/nodes/element.h>
#include "AS_DCP.h"
+#include "KM_prng.h"
#include "KM_util.h"
#include "mxf_asset.h"
#include "util.h"
#include "metadata.h"
+#include "exceptions.h"
+#include "kdm.h"
using std::string;
using std::list;
+using std::pair;
using boost::shared_ptr;
+using boost::lexical_cast;
using boost::dynamic_pointer_cast;
using namespace libdcp;
MXFAsset::MXFAsset (string directory, string file_name)
: Asset (directory, file_name)
, _progress (0)
- , _edit_rate (0)
- , _entry_point (0)
- , _intrinsic_duration (0)
- , _duration (0)
+ , _encrypted (false)
+ , _encryption_context (0)
+ , _decryption_context (0)
{
}
-MXFAsset::MXFAsset (string directory, string file_name, boost::signals2::signal<void (float)>* progress, int edit_rate, int intrinsic_duration)
- : Asset (directory, file_name)
+MXFAsset::MXFAsset (string directory, string file_name, boost::signals2::signal<void (float)>* progress, int edit_rate, int intrinsic_duration, bool encrypted)
+ : Asset (directory, file_name, edit_rate, intrinsic_duration)
, _progress (progress)
- , _edit_rate (edit_rate)
- , _entry_point (0)
- , _intrinsic_duration (intrinsic_duration)
- , _duration (intrinsic_duration)
+ , _encrypted (encrypted)
+ , _encryption_context (0)
+ , _decryption_context (0)
{
-
+ if (_encrypted) {
+ /* Generate an encryption key and a UUID for it */
+ _key_id = make_uuid ();
+ uint8_t key_buffer[ASDCP::KeyLen];
+ Kumu::FortunaRNG rng;
+ rng.FillRandom (key_buffer, ASDCP::KeyLen);
+ char key_string[ASDCP::KeyLen * 4];
+ Kumu::bin2hex (key_buffer, ASDCP::KeyLen, key_string, ASDCP::KeyLen * 4);
+ _key_value = key_string;
+
+ _encryption_context = new ASDCP::AESEncContext;
+ if (ASDCP_FAILURE (_encryption_context->InitKey (key_buffer))) {
+ throw MiscError ("could not set up encryption context");
+ }
+
+ uint8_t cbc_buffer[ASDCP::CBC_BLOCK_SIZE];
+
+ if (ASDCP_FAILURE (_encryption_context->SetIVec (rng.FillRandom (cbc_buffer, ASDCP::CBC_BLOCK_SIZE)))) {
+ throw MiscError ("could not set up CBC initialization vector");
+ }
+ }
}
+
+MXFAsset::~MXFAsset ()
+{
+ delete _encryption_context;
+}
+
void
-MXFAsset::fill_writer_info (ASDCP::WriterInfo* writer_info, string uuid)
+MXFAsset::fill_writer_info (ASDCP::WriterInfo* writer_info, string uuid, bool interop, MXFMetadata const & metadata)
{
- writer_info->ProductVersion = Metadata::instance()->product_version;
- writer_info->CompanyName = Metadata::instance()->company_name;
- writer_info->ProductName = Metadata::instance()->product_name.c_str();
+ writer_info->ProductVersion = metadata.product_version;
+ writer_info->CompanyName = metadata.company_name;
+ writer_info->ProductName = metadata.product_name.c_str();
- writer_info->LabelSetType = ASDCP::LS_MXF_SMPTE;
+ if (interop) {
+ writer_info->LabelSetType = ASDCP::LS_MXF_INTEROP;
+ } else {
+ writer_info->LabelSetType = ASDCP::LS_MXF_SMPTE;
+ }
unsigned int c;
Kumu::hex2bin (uuid.c_str(), writer_info->AssetUUID, Kumu::UUID_Length, &c);
assert (c == Kumu::UUID_Length);
+
+ if (_encrypted) {
+ Kumu::GenRandomUUID (writer_info->ContextID);
+ writer_info->EncryptedEssence = true;
+
+ unsigned int c;
+ Kumu::hex2bin (_key_id.c_str(), writer_info->CryptographicKeyID, Kumu::UUID_Length, &c);
+ assert (c == Kumu::UUID_Length);
+ }
}
bool
-MXFAsset::equals (shared_ptr<const Asset> other, EqualityOptions, boost::function<void (string)> note) const
+MXFAsset::equals (shared_ptr<const Asset> other, EqualityOptions opt, boost::function<void (NoteType, string)> note) const
{
+ if (!Asset::equals (other, opt, note)) {
+ return false;
+ }
+
shared_ptr<const MXFAsset> other_mxf = dynamic_pointer_cast<const MXFAsset> (other);
if (!other_mxf) {
- note ("comparing an MXF asset with a non-MXF asset");
+ note (ERROR, "comparing an MXF asset with a non-MXF asset");
return false;
}
if (_file_name != other_mxf->_file_name) {
- note ("MXF names differ");
- return false;
+ note (ERROR, "MXF names differ");
+ if (!opt.mxf_names_can_differ) {
+ return false;
+ }
}
+
+ return true;
+}
- if (_edit_rate != other_mxf->_edit_rate) {
- note ("MXF edit rates differ");
- return false;
+void
+MXFAsset::add_typed_key_id (xmlpp::Element* parent) const
+{
+ xmlpp::Element* typed_key_id = parent->add_child("TypedKeyId");
+ typed_key_id->add_child("KeyType")->add_child_text(key_type ());
+ typed_key_id->add_child("KeyId")->add_child_text("urn:uuid:" + _key_id);
+}
+
+void
+MXFAsset::write_to_cpl (xmlpp::Element* node, bool interop) const
+{
+ pair<string, string> const attr = cpl_node_attribute (interop);
+ xmlpp::Element* a = node->add_child (cpl_node_name ());
+ if (!attr.first.empty ()) {
+ a->set_attribute (attr.first, attr.second);
}
-
- if (_intrinsic_duration != other_mxf->_intrinsic_duration) {
- note ("MXF intrinsic durations differ");
- return false;
+ a->add_child ("Id")->add_child_text ("urn:uuid:" + _uuid);
+ a->add_child ("AnnotationText")->add_child_text (_file_name);
+ a->add_child ("EditRate")->add_child_text (lexical_cast<string> (_edit_rate) + " 1");
+ a->add_child ("IntrinsicDuration")->add_child_text (lexical_cast<string> (_intrinsic_duration));
+ a->add_child ("EntryPoint")->add_child_text (lexical_cast<string> (_entry_point));
+ a->add_child ("Duration")->add_child_text (lexical_cast<string> (_duration));
+ if (_encrypted) {
+ a->add_child("KeyId")->add_child_text ("urn:uuid:" + _key_id);
}
+}
- if (_duration != other_mxf->_duration) {
- note ("MXF durations differ");
- return false;
+void
+MXFAsset::set_kdm_cipher (KDMCipher cipher)
+{
+ _decryption_context = new ASDCP::AESDecContext;
+ if (ASDCP_FAILURE (_decryption_context->InitKey (cipher.key_raw ()))) {
+ throw MiscError ("could not set up decryption context");
}
-
- return true;
}
projects / libdcp.git / blobdiff