/
AS_DCP_MXF.cpp
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AS_DCP_MXF.cpp
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/*
Copyright (c) 2004-2016, John Hurst
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*! \file AS_DCP_MXF.cpp
\version $Id$
\brief AS-DCP library, misc classes and subroutines
*/
#include <KM_fileio.h>
#include <KM_xml.h>
#include "AS_DCP_internal.h"
#include "JP2K.h"
#include "ACES.h"
#include "MPEG.h"
#include "Wav.h"
#include "KM_util.h"
#include <iostream>
#include <iomanip>
//------------------------------------------------------------------------------------------
// misc subroutines
//
std::ostream&
ASDCP::operator << (std::ostream& strm, const WriterInfo& Info)
{
char str_buf[40];
strm << " ProductUUID: " << UUID(Info.ProductUUID).EncodeHex(str_buf, 40) << std::endl;
strm << " ProductVersion: " << Info.ProductVersion << std::endl;
strm << " CompanyName: " << Info.CompanyName << std::endl;
strm << " ProductName: " << Info.ProductName << std::endl;
strm << " EncryptedEssence: " << (Info.EncryptedEssence ? "Yes" : "No") << std::endl;
if ( Info.EncryptedEssence )
{
strm << " HMAC: " << (Info.UsesHMAC ? "Yes" : "No") << std::endl;
strm << " ContextID: " << UUID(Info.ContextID).EncodeHex(str_buf, 40) << std::endl;
strm << "CryptographicKeyID: " << UUID(Info.CryptographicKeyID).EncodeHex(str_buf, 40) << std::endl;
}
strm << " AssetUUID: " << UUID(Info.AssetUUID).EncodeHex(str_buf, 40) << std::endl;
strm << " Label Set Type: " << (Info.LabelSetType == LS_MXF_SMPTE ? "SMPTE" :
(Info.LabelSetType == LS_MXF_INTEROP ? "MXF Interop" :
"Unknown")) << std::endl;
return strm;
}
//
void
ASDCP::WriterInfoDump(const WriterInfo& Info, FILE* stream)
{
if ( stream == 0 )
stream = stderr;
char str_buf[40];
fprintf(stream," ProductUUID: %s\n", UUID(Info.ProductUUID).EncodeHex(str_buf, 40));
fprintf(stream,"\
ProductVersion: %s\n\
CompanyName: %s\n\
ProductName: %s\n\
EncryptedEssence: %s\n",
Info.ProductVersion.c_str(),
Info.CompanyName.c_str(),
Info.ProductName.c_str(),
( Info.EncryptedEssence ? "Yes" : "No" )
);
if ( Info.EncryptedEssence )
{
fprintf(stream, " HMAC: %s\n", ( Info.UsesHMAC ? "Yes" : "No"));
fprintf(stream, " ContextID: %s\n", UUID(Info.ContextID).EncodeHex(str_buf, 40));
fprintf(stream, "CryptographicKeyID: %s\n", UUID(Info.CryptographicKeyID).EncodeHex(str_buf, 40));
}
fprintf(stream," AssetUUID: %s\n", UUID(Info.AssetUUID).EncodeHex(str_buf, 40));
fprintf(stream," Label Set Type: %s\n", ( Info.LabelSetType == LS_MXF_SMPTE ? "SMPTE" :
( Info.LabelSetType == LS_MXF_INTEROP ? "MXF Interop" :
"Unknown" ) ));
}
//
Result_t
ASDCP::MD_to_WriterInfo(Identification* InfoObj, WriterInfo& Info)
{
ASDCP_TEST_NULL(InfoObj);
char tmp_str[IdentBufferLen];
Info.ProductName = "Unknown Product";
Info.ProductVersion = "Unknown Version";
Info.CompanyName = "Unknown Company";
memset(Info.ProductUUID, 0, UUIDlen);
InfoObj->ProductName.EncodeString(tmp_str, IdentBufferLen);
if ( *tmp_str ) Info.ProductName = tmp_str;
InfoObj->VersionString.EncodeString(tmp_str, IdentBufferLen);
if ( *tmp_str ) Info.ProductVersion = tmp_str;
InfoObj->CompanyName.EncodeString(tmp_str, IdentBufferLen);
if ( *tmp_str ) Info.CompanyName = tmp_str;
memcpy(Info.ProductUUID, InfoObj->ProductUID.Value(), UUIDlen);
return RESULT_OK;
}
//
Result_t
ASDCP::MD_to_CryptoInfo(CryptographicContext* InfoObj, WriterInfo& Info, const Dictionary& Dict)
{
ASDCP_TEST_NULL(InfoObj);
Info.EncryptedEssence = true;
memcpy(Info.ContextID, InfoObj->ContextID.Value(), UUIDlen);
memcpy(Info.CryptographicKeyID, InfoObj->CryptographicKeyID.Value(), UUIDlen);
UL MIC_SHA1(Dict.ul(MDD_MICAlgorithm_HMAC_SHA1));
UL MIC_NONE(Dict.ul(MDD_MICAlgorithm_NONE));
if ( InfoObj->MICAlgorithm == MIC_SHA1 )
Info.UsesHMAC = true;
else if ( InfoObj->MICAlgorithm == MIC_NONE )
Info.UsesHMAC = false;
else
{
DefaultLogSink().Error("Unexpected MICAlgorithm UL.\n");
return RESULT_FORMAT;
}
return RESULT_OK;
}
//
//
ASDCP::Result_t
ASDCP::EssenceType(const std::string& filename, EssenceType_t& type, const Kumu::IFileReaderFactory& fileReaderFactory)
{
const Dictionary* m_Dict = &DefaultCompositeDict();
InterchangeObject* md_object = 0;
assert(m_Dict);
ASDCP::mem_ptr<Kumu::IFileReader> Reader(fileReaderFactory.CreateFileReader());
OP1aHeader TestHeader(m_Dict);
Result_t result = Reader->OpenRead(filename);
if ( ASDCP_SUCCESS(result) )
result = TestHeader.InitFromFile(*Reader); // test UL and OP
if ( ASDCP_SUCCESS(result) )
{
type = ESS_UNKNOWN;
if ( TestHeader.OperationalPattern == UL(m_Dict->ul(MDD_OPAtom))
|| TestHeader.OperationalPattern == UL(m_Dict->ul(MDD_MXFInterop_OPAtom)) )
{
if ( ASDCP_SUCCESS(TestHeader.GetMDObjectByType(OBJ_TYPE_ARGS(JPEG2000PictureSubDescriptor))) )
{
if ( ASDCP_SUCCESS(TestHeader.GetMDObjectByType(OBJ_TYPE_ARGS(StereoscopicPictureSubDescriptor))) )
{
type = ESS_JPEG_2000_S;
}
else
{
type = ESS_JPEG_2000;
}
}
else if ( ASDCP_SUCCESS(TestHeader.GetMDObjectByType(OBJ_TYPE_ARGS(WaveAudioDescriptor), &md_object)) )
{
assert(md_object);
if ( static_cast<ASDCP::MXF::WaveAudioDescriptor*>(md_object)->AudioSamplingRate == SampleRate_96k )
{
type = ESS_PCM_24b_96k;
}
else
{
type = ESS_PCM_24b_48k;
}
}
else if ( ASDCP_SUCCESS(TestHeader.GetMDObjectByType(OBJ_TYPE_ARGS(MPEG2VideoDescriptor))) )
{
type = ESS_MPEG2_VES;
}
else if ( ASDCP_SUCCESS(TestHeader.GetMDObjectByType(OBJ_TYPE_ARGS(TimedTextDescriptor))) )
{
type = ESS_TIMED_TEXT;
}
else if ( ASDCP_SUCCESS(TestHeader.GetMDObjectByType(OBJ_TYPE_ARGS(DCDataDescriptor)))
|| ASDCP_SUCCESS(TestHeader.GetMDObjectByType(OBJ_TYPE_ARGS(PrivateDCDataDescriptor))) )
{
if ( ASDCP_SUCCESS(TestHeader.GetMDObjectByType(OBJ_TYPE_ARGS(DolbyAtmosSubDescriptor))) )
{
type = ESS_DCDATA_DOLBY_ATMOS;
}
else
{
type = ESS_DCDATA_UNKNOWN;
}
}
}
else if ( TestHeader.OperationalPattern == UL(m_Dict->ul(MDD_OP1a)) )
{
// ST 2065-5 Picture Descriptor does not have a mandatory SubDescriptor, check EssenceContainer instead
if (ASDCP_SUCCESS(TestHeader.GetMDObjectByType(OBJ_TYPE_ARGS(RGBAEssenceDescriptor))) )
{
MXF::RGBAEssenceDescriptor *rgba_descriptor = 0;
if ASDCP_SUCCESS(TestHeader.GetMDObjectByType(m_Dict->ul(MDD_RGBAEssenceDescriptor), reinterpret_cast<MXF::InterchangeObject**>(&rgba_descriptor)))
{
if (rgba_descriptor->EssenceContainer == m_Dict->ul(MDD_MXFGCFrameWrappedACESPictures))
type = ESS_AS02_ACES;
}
}
if (type == ESS_UNKNOWN)
{
if ( ASDCP_SUCCESS(TestHeader.GetMDObjectByType(OBJ_TYPE_ARGS(JPEG2000PictureSubDescriptor))) )
{
type = ESS_AS02_JPEG_2000;
}
else if ( ASDCP_SUCCESS(TestHeader.GetMDObjectByType(OBJ_TYPE_ARGS(JPEGXSPictureSubDescriptor))) )
{
type = ESS_AS02_JPEG_XS;
}
else if ( ASDCP_SUCCESS(TestHeader.GetMDObjectByType(OBJ_TYPE_ARGS(WaveAudioDescriptor), &md_object)) )
{
assert(md_object);
if ( static_cast<ASDCP::MXF::WaveAudioDescriptor*>(md_object)->AudioSamplingRate == SampleRate_96k )
{
type = ESS_AS02_PCM_24b_96k;
}
else
{
type = ESS_AS02_PCM_24b_48k;
}
}
else if ( ASDCP_SUCCESS(TestHeader.GetMDObjectByType(OBJ_TYPE_ARGS(TimedTextDescriptor))) )
{
type = ESS_AS02_TIMED_TEXT;
}
else if ( ASDCP_SUCCESS(TestHeader.GetMDObjectByType(OBJ_TYPE_ARGS(PIMFDynamicMetadataDescriptor))) )
{
type = ESS_DCDATA_UNKNOWN;
}
else if ( ASDCP_SUCCESS(TestHeader.GetMDObjectByType(OBJ_TYPE_ARGS(ISXDDataEssenceDescriptor))) )
{
type = ESS_AS02_ISXD;
}
else if ( ASDCP_SUCCESS(TestHeader.GetMDObjectByType(OBJ_TYPE_ARGS(ACESPictureSubDescriptor))) )
{
type = ESS_AS02_ACES;
}
else if ( ASDCP_SUCCESS(TestHeader.GetMDObjectByType(OBJ_TYPE_ARGS(IABEssenceDescriptor))) )
{
type = ESS_AS02_IAB;
}
}
}
else
{
DefaultLogSink().Error("Unsupported MXF Operational Pattern.\n");
return RESULT_FORMAT;
}
}
return result;
}
//
static bool
string_is_xml(const ASDCP::FrameBuffer& buffer)
{
return (strncmp((const char *)buffer.RoData(), "<?xml", 5) == 0 ||
strncmp((const char *)buffer.RoData(), "\xEF\xBB\xBF<?xml", 8) == 0); // Allow BOM
}
//
//
ASDCP::Result_t
ASDCP::RawEssenceType(const std::string& filename, EssenceType_t& type)
{
type = ESS_UNKNOWN;
ASDCP::FrameBuffer FB;
Kumu::FileReader Reader;
ASDCP::Wav::SimpleWaveHeader WavHeader;
ASDCP::RF64::SimpleRF64Header RF64Header;
ASDCP::AIFF::SimpleAIFFHeader AIFFHeader;
ui32_t data_offset;
ui32_t read_count;
Result_t result = FB.Capacity(Wav::MaxWavHeader); // using Wav max because everything else is much smaller
if ( Kumu::PathIsFile(filename) )
{
result = Reader.OpenRead(filename);
if ( ASDCP_SUCCESS(result) )
{
result = Reader.Read(FB.Data(), FB.Capacity(), &read_count);
Reader.Close();
}
if ( ASDCP_SUCCESS(result) )
{
const byte_t* p = FB.RoData();
FB.Size(read_count);
ui32_t i = 0;
while ( p[i] == 0 ) i++;
if ( i > 1 && p[i] == 1 && (p[i+1] == ASDCP::MPEG2::SEQ_START || p[i+1] == ASDCP::MPEG2::PIC_START) )
{
type = ESS_MPEG2_VES;
}
else if ( memcmp(FB.RoData(), ASDCP::JP2K::Magic, sizeof(ASDCP::JP2K::Magic)) == 0 )
{
type = ESS_JPEG_2000;
}
else if(memcmp(FB.RoData(), AS_02::ACES::Magic, sizeof(AS_02::ACES::Magic)) == 0)
{
type = ESS_AS02_ACES;
}
else if ( std::string((const char*)FB.RoData() + 8, 4) == "WAVE" )
{
if ( std::string((const char*)FB.RoData(), 4) == "RIFF" )
{
result = WavHeader.ReadFromBuffer(FB.RoData(), read_count, &data_offset);
if ( ASDCP_SUCCESS(result) )
{
switch ( WavHeader.samplespersec )
{
case 48000: type = ESS_PCM_24b_48k; break;
case 96000: type = ESS_PCM_24b_96k; break;
default:
DefaultLogSink().Error("Unexpected sample rate: %d\n", WavHeader.samplespersec);
result = RESULT_FORMAT;
}
}
}
else
{
result = RF64Header.ReadFromBuffer(FB.RoData(), read_count, &data_offset);
if ( ASDCP_SUCCESS(result) )
{
switch ( RF64Header.samplespersec )
{
case 48000: type = ESS_PCM_24b_48k; break;
case 96000: type = ESS_PCM_24b_96k; break;
default:
DefaultLogSink().Error("Unexpected sample rate: %d\n", WavHeader.samplespersec);
result = RESULT_FORMAT;
}
}
}
}
else if ( ASDCP_SUCCESS(AIFFHeader.ReadFromBuffer(FB.RoData(), read_count, &data_offset)) )
{
type = ESS_PCM_24b_48k;
}
else if ( string_is_xml(FB) )
{
type = ESS_TIMED_TEXT;
}
else if ( ASDCP::ATMOS::IsDolbyAtmos(filename) )
{
type = ESS_DCDATA_DOLBY_ATMOS;
}
}
}
else if ( Kumu::PathIsDirectory(filename) )
{
char next_file[Kumu::MaxFilePath];
Kumu::DirScanner Scanner;
Result_t result = Scanner.Open(filename);
if ( ASDCP_SUCCESS(result) )
{
while ( ASDCP_SUCCESS(Scanner.GetNext(next_file)) )
{
if ( next_file[0] == '.' ) // no hidden files or internal links
continue;
result = Reader.OpenRead(Kumu::PathJoin(filename, next_file));
if ( ASDCP_SUCCESS(result) )
{
result = Reader.Read(FB.Data(), FB.Capacity(), &read_count);
Reader.Close();
}
if ( ASDCP_SUCCESS(result) )
{
if ( memcmp(FB.RoData(), ASDCP::JP2K::Magic, sizeof(ASDCP::JP2K::Magic)) == 0 )
{
type = ESS_JPEG_2000;
}
else if(memcmp(FB.RoData(), AS_02::ACES::Magic, sizeof(AS_02::ACES::Magic)) == 0)
{
type = ESS_AS02_ACES;
}
else if ( ASDCP_SUCCESS(WavHeader.ReadFromBuffer(FB.RoData(), read_count, &data_offset)) )
{
switch ( WavHeader.samplespersec )
{
case 48000: type = ESS_PCM_24b_48k; break;
case 96000: type = ESS_PCM_24b_96k; break;
default:
return RESULT_FORMAT;
}
}
else if ( ASDCP_SUCCESS(RF64Header.ReadFromBuffer(FB.RoData(), read_count, &data_offset)) )
{
switch ( RF64Header.samplespersec )
{
case 48000: type = ESS_PCM_24b_48k; break;
case 96000: type = ESS_PCM_24b_96k; break;
default:
return RESULT_FORMAT;
}
}
else if ( ASDCP::ATMOS::IsDolbyAtmos(Kumu::PathJoin(filename, next_file)) )
{
type = ESS_DCDATA_DOLBY_ATMOS;
}
else
{
type = ESS_DCDATA_UNKNOWN;
}
}
break;
}
}
}
return result;
}
#ifdef HAVE_OPENSSL
//
Result_t
ASDCP::EncryptFrameBuffer(const ASDCP::FrameBuffer& FBin, ASDCP::FrameBuffer& FBout, AESEncContext* Ctx)
{
ASDCP_TEST_NULL(Ctx);
FBout.Size(0);
// size the buffer
Result_t result = FBout.Capacity(calc_esv_length(FBin.Size(), FBin.PlaintextOffset()));
// write the IV
byte_t* p = FBout.Data();
// write the IV to the frame buffer
Ctx->GetIVec(p);
p += CBC_BLOCK_SIZE;
// encrypt the check value to the frame buffer
if ( ASDCP_SUCCESS(result) )
{
result = Ctx->EncryptBlock(ESV_CheckValue, p, CBC_BLOCK_SIZE);
p += CBC_BLOCK_SIZE;
}
// write optional plaintext region
if ( FBin.PlaintextOffset() > 0 )
{
assert(FBin.PlaintextOffset() <= FBin.Size());
memcpy(p, FBin.RoData(), FBin.PlaintextOffset());
p += FBin.PlaintextOffset();
}
ui32_t ct_size = FBin.Size() - FBin.PlaintextOffset();
ui32_t diff = ct_size % CBC_BLOCK_SIZE;
ui32_t block_size = ct_size - diff;
assert((block_size % CBC_BLOCK_SIZE) == 0);
// encrypt the ciphertext region essence data
if ( ASDCP_SUCCESS(result) )
{
result = Ctx->EncryptBlock(FBin.RoData() + FBin.PlaintextOffset(), p, block_size);
p += block_size;
}
// construct and encrypt the padding
if ( ASDCP_SUCCESS(result) )
{
byte_t the_last_block[CBC_BLOCK_SIZE];
if ( diff > 0 )
memcpy(the_last_block, FBin.RoData() + FBin.PlaintextOffset() + block_size, diff);
for (ui32_t i = 0; diff < CBC_BLOCK_SIZE; diff++, i++ )
the_last_block[diff] = i;
result = Ctx->EncryptBlock(the_last_block, p, CBC_BLOCK_SIZE);
}
if ( ASDCP_SUCCESS(result) )
FBout.Size(calc_esv_length(FBin.Size(), FBin.PlaintextOffset()));
return result;
}
//
Result_t
ASDCP::DecryptFrameBuffer(const ASDCP::FrameBuffer& FBin, ASDCP::FrameBuffer& FBout, AESDecContext* Ctx)
{
ASDCP_TEST_NULL(Ctx);
assert(FBout.Capacity() >= FBin.SourceLength());
ui32_t ct_size = FBin.SourceLength() - FBin.PlaintextOffset();
ui32_t diff = ct_size % CBC_BLOCK_SIZE;
ui32_t block_size = ct_size - diff;
assert(block_size);
assert((block_size % CBC_BLOCK_SIZE) == 0);
const byte_t* buf = FBin.RoData();
// get ivec
Ctx->SetIVec(buf);
buf += CBC_BLOCK_SIZE;
// decrypt and test check value
byte_t CheckValue[CBC_BLOCK_SIZE];
Result_t result = Ctx->DecryptBlock(buf, CheckValue, CBC_BLOCK_SIZE);
buf += CBC_BLOCK_SIZE;
if ( memcmp(CheckValue, ESV_CheckValue, CBC_BLOCK_SIZE) != 0 )
return RESULT_CHECKFAIL;
// copy plaintext region
if ( FBin.PlaintextOffset() > 0 )
{
memcpy(FBout.Data(), buf, FBin.PlaintextOffset());
buf += FBin.PlaintextOffset();
}
// decrypt all but last block
if ( ASDCP_SUCCESS(result) )
{
result = Ctx->DecryptBlock(buf, FBout.Data() + FBin.PlaintextOffset(), block_size);
buf += block_size;
}
// decrypt last block
if ( ASDCP_SUCCESS(result) )
{
byte_t the_last_block[CBC_BLOCK_SIZE];
result = Ctx->DecryptBlock(buf, the_last_block, CBC_BLOCK_SIZE);
if ( the_last_block[diff] != 0 )
{
DefaultLogSink().Error("Unexpected non-zero padding value.\n");
return RESULT_FORMAT;
}
if ( diff > 0 )
memcpy(FBout.Data() + FBin.PlaintextOffset() + block_size, the_last_block, diff);
}
if ( ASDCP_SUCCESS(result) )
FBout.Size(FBin.SourceLength());
return result;
}
//
Result_t
ASDCP::IntegrityPack::CalcValues(const ASDCP::FrameBuffer& FB, const byte_t* AssetID,
ui32_t sequence, HMACContext* HMAC)
{
ASDCP_TEST_NULL(AssetID);
ASDCP_TEST_NULL(HMAC);
byte_t* p = Data;
HMAC->Reset();
static byte_t ber_4[MXF_BER_LENGTH] = {0x83, 0, 0, 0};
// update HMAC with essence data
HMAC->Update(FB.RoData(), FB.Size());
// track file ID length
memcpy(p, ber_4, MXF_BER_LENGTH);
*(p+3) = UUIDlen;;
p += MXF_BER_LENGTH;
// track file ID
memcpy(p, AssetID, UUIDlen);
p += UUIDlen;
// sequence length
memcpy(p, ber_4, MXF_BER_LENGTH);
*(p+3) = sizeof(ui64_t);
p += MXF_BER_LENGTH;
// sequence number
p += Kumu::i2p<ui64_t>(KM_i64_BE(sequence), p);
// HMAC length
memcpy(p, ber_4, MXF_BER_LENGTH);
*(p+3) = HMAC_SIZE;
p += MXF_BER_LENGTH;
// update HMAC with intpack values
HMAC->Update(Data, klv_intpack_size - HMAC_SIZE);
// finish & write HMAC
HMAC->Finalize();
HMAC->GetHMACValue(p);
assert(p + HMAC_SIZE == Data + klv_intpack_size);
return RESULT_OK;
}
Result_t
ASDCP::IntegrityPack::TestValues(const ASDCP::FrameBuffer& FB, const byte_t* AssetID,
ui32_t sequence, HMACContext* HMAC)
{
ASDCP_TEST_NULL(AssetID);
ASDCP_TEST_NULL(HMAC);
// find the start of the intpack
byte_t* p = (byte_t*)FB.RoData() + ( FB.Size() - klv_intpack_size );
// test the AssetID length
if ( ! Kumu::read_test_BER(&p, UUIDlen) )
return RESULT_HMACFAIL;
// test the AssetID
if ( memcmp(p, AssetID, UUIDlen) != 0 )
{
DefaultLogSink().Error("IntegrityPack failure: AssetID mismatch.\n");
return RESULT_HMACFAIL;
}
p += UUIDlen;
// test the sequence length
if ( ! Kumu::read_test_BER(&p, sizeof(ui64_t)) )
return RESULT_HMACFAIL;
ui32_t test_sequence = (ui32_t)KM_i64_BE(Kumu::cp2i<ui64_t>(p));
// test the sequence value
if ( test_sequence != sequence )
{
DefaultLogSink().Error("IntegrityPack failure: sequence is %u, expecting %u.\n", test_sequence, sequence);
return RESULT_HMACFAIL;
}
p += sizeof(ui64_t);
// test the HMAC length
if ( ! Kumu::read_test_BER(&p, HMAC_SIZE) )
return RESULT_HMACFAIL;
// test the HMAC
HMAC->Reset();
HMAC->Update(FB.RoData(), FB.Size() - HMAC_SIZE);
HMAC->Finalize();
Result_t result = RESULT_OK;
result = HMAC->TestHMACValue(p);
if (KM_FAILURE(result))
{
Result_t r = RESULT_OK;
char hmac_str[HMAC_SIZE*10];
char found_str[HMAC_SIZE*10];
byte_t hmac_buf[HMAC_SIZE];
Kumu::bin2hex(p, HMAC_SIZE, found_str, HMAC_SIZE*10);
r = HMAC->GetHMACValue(hmac_buf);
if ( KM_SUCCESS( r ) )
{
Kumu::bin2hex(hmac_buf, HMAC_SIZE, hmac_str, HMAC_SIZE*10);
}
else
{
snprintf(hmac_str, HMAC_SIZE*10, " - read error - ");
}
DefaultLogSink().Error("IntegrityPack failure: HMAC is %s, expecting %s.\n", found_str, hmac_str);
}
return result;
}
#endif //HAVE_OPENSSL
//
// end AS_DCP_MXF.cpp
//