mirror of
https://github.com/jakcron/nstool
synced 2024-11-15 02:06:40 +00:00
[nstool] NCA processing more robust.
This commit is contained in:
jakcron
parent
60eda9e42e
commit
3437031128
1 changed files with 149 additions and 163 deletions
|
|
@ -81,6 +81,146 @@ std::string kProgramPartitionNameStr[]
|
|||
"logo"
|
||||
};
|
||||
|
||||
|
||||
NcaProcess::NcaProcess() :
|
||||
mReader(nullptr),
|
||||
mKeyset(nullptr),
|
||||
mCliOutputType(OUTPUT_NORMAL),
|
||||
mVerify(false),
|
||||
mListFs(false)
|
||||
{
|
||||
for (size_t i = 0; i < nx::nca::kPartitionNum; i++)
|
||||
{
|
||||
mPartitionPath[i].doExtract = false;
|
||||
mPartitions[i].reader = nullptr;
|
||||
}
|
||||
}
|
||||
|
||||
NcaProcess::~NcaProcess()
|
||||
{
|
||||
if (mReader != nullptr)
|
||||
{
|
||||
delete mReader;
|
||||
}
|
||||
|
||||
for (size_t i = 0; i < nx::nca::kPartitionNum; i++)
|
||||
{
|
||||
if (mPartitions[i].reader != nullptr)
|
||||
{
|
||||
delete mPartitions[i].reader;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void NcaProcess::process()
|
||||
{
|
||||
fnd::MemoryBlob scratch;
|
||||
|
||||
if (mReader == nullptr)
|
||||
{
|
||||
throw fnd::Exception(kModuleName, "No file reader set.");
|
||||
}
|
||||
|
||||
// read header block
|
||||
mReader->read((byte_t*)&mHdrBlock, 0, sizeof(nx::sNcaHeaderBlock));
|
||||
|
||||
// decrypt header block
|
||||
nx::NcaUtils::decryptNcaHeader((byte_t*)&mHdrBlock, (byte_t*)&mHdrBlock, mKeyset->nca.header_key);
|
||||
|
||||
// generate header hash
|
||||
crypto::sha::Sha256((byte_t*)&mHdrBlock.header, sizeof(nx::sNcaHeader), mHdrHash.bytes);
|
||||
|
||||
// proccess main header
|
||||
mHdr.importBinary((byte_t*)&mHdrBlock.header, sizeof(nx::sNcaHeader));
|
||||
|
||||
// determine keys
|
||||
generateNcaBodyEncryptionKeys();
|
||||
|
||||
// import/generate fs header data
|
||||
generatePartitionConfiguration();
|
||||
|
||||
// validate signatures
|
||||
if (mVerify)
|
||||
validateNcaSignatures();
|
||||
|
||||
// display header
|
||||
if (mCliOutputType >= OUTPUT_NORMAL)
|
||||
displayHeader();
|
||||
|
||||
// process partition
|
||||
processPartitions();
|
||||
|
||||
/*
|
||||
NCA is a file container
|
||||
A hashed and signed file container
|
||||
|
||||
To verify a NCA: (R=regular step)
|
||||
1 - decrypt header (R)
|
||||
2 - verify signature[0]
|
||||
3 - validate hashes of fs_headers
|
||||
4 - determine how to read/decrypt the partitions (R)
|
||||
5 - validate the partitions depending on their hash method
|
||||
6 - if this NCA is a Program or Patch, open main.npdm from partition0
|
||||
7 - validate ACID
|
||||
8 - use public key in ACID to verify NCA signature[1]
|
||||
|
||||
Things to consider
|
||||
* because of the manditory steps between verifcation steps
|
||||
the NCA should be ready to be pulled to pieces before any printing is done
|
||||
so the verification text can be presented without interuption
|
||||
|
||||
*/
|
||||
}
|
||||
|
||||
void NcaProcess::setInputFile(fnd::IFile* file, size_t offset, size_t size)
|
||||
{
|
||||
mReader = new OffsetAdjustedIFile(file, offset, size);
|
||||
}
|
||||
|
||||
void NcaProcess::setKeyset(const sKeyset* keyset)
|
||||
{
|
||||
mKeyset = keyset;
|
||||
}
|
||||
|
||||
void NcaProcess::setCliOutputMode(CliOutputType type)
|
||||
{
|
||||
mCliOutputType = type;
|
||||
}
|
||||
|
||||
void NcaProcess::setVerifyMode(bool verify)
|
||||
{
|
||||
mVerify = verify;
|
||||
}
|
||||
|
||||
void NcaProcess::setPartition0ExtractPath(const std::string& path)
|
||||
{
|
||||
mPartitionPath[0].path = path;
|
||||
mPartitionPath[0].doExtract = true;
|
||||
}
|
||||
|
||||
void NcaProcess::setPartition1ExtractPath(const std::string& path)
|
||||
{
|
||||
mPartitionPath[1].path = path;
|
||||
mPartitionPath[1].doExtract = true;
|
||||
}
|
||||
|
||||
void NcaProcess::setPartition2ExtractPath(const std::string& path)
|
||||
{
|
||||
mPartitionPath[2].path = path;
|
||||
mPartitionPath[2].doExtract = true;
|
||||
}
|
||||
|
||||
void NcaProcess::setPartition3ExtractPath(const std::string& path)
|
||||
{
|
||||
mPartitionPath[3].path = path;
|
||||
mPartitionPath[3].doExtract = true;
|
||||
}
|
||||
|
||||
void NcaProcess::setListFs(bool list_fs)
|
||||
{
|
||||
mListFs = list_fs;
|
||||
}
|
||||
|
||||
void NcaProcess::generateNcaBodyEncryptionKeys()
|
||||
{
|
||||
// create zeros key
|
||||
|
|
@ -147,6 +287,7 @@ void NcaProcess::generateNcaBodyEncryptionKeys()
|
|||
printf("AES-CTR Key: ");
|
||||
fnd::SimpleTextOutput::hexDump(mBodyKeys.aes_ctr.var.key, sizeof(mBodyKeys.aes_ctr.var));
|
||||
}
|
||||
|
||||
if (mBodyKeys.aes_xts.isSet)
|
||||
{
|
||||
printf("AES-XTS Key0: ");
|
||||
|
|
@ -198,7 +339,13 @@ void NcaProcess::generatePartitionConfiguration()
|
|||
info.format_type = (nx::nca::FormatType)fs_header.format_type;
|
||||
info.hash_type = (nx::nca::HashType)fs_header.hash_type;
|
||||
info.enc_type = (nx::nca::EncryptionType)fs_header.encryption_type;
|
||||
if (info.hash_type == nx::nca::HASH_HIERARCHICAL_SHA256)
|
||||
info.hash_tree_meta.importHierarchicalSha256Header(nx::HierarchicalSha256Header(fs_header.hash_superblock, nx::nca::kFsHeaderHashSuperblockLen));
|
||||
else if (info.hash_type == nx::nca::HASH_HIERARCHICAL_INTERGRITY)
|
||||
info.hash_tree_meta.importHierarchicalIntergityHeader(nx::HierarchicalIntegrityHeader(fs_header.hash_superblock, nx::nca::kFsHeaderHashSuperblockLen));
|
||||
|
||||
|
||||
// create reader
|
||||
try
|
||||
{
|
||||
// filter out unrecognised format types
|
||||
|
|
@ -239,17 +386,7 @@ void NcaProcess::generatePartitionConfiguration()
|
|||
|
||||
// filter out unrecognised hash types, and hash based readers
|
||||
if (info.hash_type == nx::nca::HASH_HIERARCHICAL_SHA256 || info.hash_type == nx::nca::HASH_HIERARCHICAL_INTERGRITY)
|
||||
{
|
||||
switch(info.hash_type)
|
||||
{
|
||||
case (nx::nca::HASH_HIERARCHICAL_SHA256):
|
||||
info.hash_tree_meta.importHierarchicalSha256Header(nx::HierarchicalSha256Header(fs_header.hash_superblock, nx::nca::kFsHeaderHashSuperblockLen));
|
||||
break;
|
||||
case (nx::nca::HASH_HIERARCHICAL_INTERGRITY):
|
||||
info.hash_tree_meta.importHierarchicalIntergityHeader(nx::HierarchicalIntegrityHeader(fs_header.hash_superblock, nx::nca::kFsHeaderHashSuperblockLen));
|
||||
break;
|
||||
}
|
||||
|
||||
{
|
||||
fnd::IFile* tmp = info.reader;
|
||||
info.reader = nullptr;
|
||||
info.reader = new HashTreeWrappedIFile(tmp, true, info.hash_tree_meta);
|
||||
|
|
@ -263,24 +400,12 @@ void NcaProcess::generatePartitionConfiguration()
|
|||
}
|
||||
catch (const fnd::Exception& e)
|
||||
{
|
||||
printf("ugh\n");
|
||||
info.fail_reason = std::string(e.error());
|
||||
if (info.reader != nullptr)
|
||||
delete info.reader;
|
||||
info.reader = nullptr;
|
||||
info.hash_tree_meta = HashTreeMeta();
|
||||
}
|
||||
/*
|
||||
if (info.reader != nullptr)
|
||||
{
|
||||
fnd::MemoryBlob sss;
|
||||
sss.alloc(0x100);
|
||||
info.reader->read(sss.getBytes(), 0x100);
|
||||
printf("[%d] START\n", i);
|
||||
fnd::SimpleTextOutput::hxdStyleDump(sss.getBytes(), 0x100);
|
||||
printf("[%d] END\n", i);
|
||||
}
|
||||
*/
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -520,142 +645,3 @@ void NcaProcess::processPartitions()
|
|||
}
|
||||
}
|
||||
}
|
||||
|
||||
NcaProcess::NcaProcess() :
|
||||
mReader(nullptr),
|
||||
mKeyset(nullptr),
|
||||
mCliOutputType(OUTPUT_NORMAL),
|
||||
mVerify(false),
|
||||
mListFs(false)
|
||||
{
|
||||
for (size_t i = 0; i < nx::nca::kPartitionNum; i++)
|
||||
{
|
||||
mPartitionPath[i].doExtract = false;
|
||||
mPartitions[i].reader = nullptr;
|
||||
}
|
||||
}
|
||||
|
||||
NcaProcess::~NcaProcess()
|
||||
{
|
||||
if (mReader != nullptr)
|
||||
{
|
||||
delete mReader;
|
||||
}
|
||||
|
||||
for (size_t i = 0; i < nx::nca::kPartitionNum; i++)
|
||||
{
|
||||
if (mPartitions[i].reader != nullptr)
|
||||
{
|
||||
delete mPartitions[i].reader;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void NcaProcess::process()
|
||||
{
|
||||
fnd::MemoryBlob scratch;
|
||||
|
||||
if (mReader == nullptr)
|
||||
{
|
||||
throw fnd::Exception(kModuleName, "No file reader set.");
|
||||
}
|
||||
|
||||
// read header block
|
||||
mReader->read((byte_t*)&mHdrBlock, 0, sizeof(nx::sNcaHeaderBlock));
|
||||
|
||||
// decrypt header block
|
||||
nx::NcaUtils::decryptNcaHeader((byte_t*)&mHdrBlock, (byte_t*)&mHdrBlock, mKeyset->nca.header_key);
|
||||
|
||||
// generate header hash
|
||||
crypto::sha::Sha256((byte_t*)&mHdrBlock.header, sizeof(nx::sNcaHeader), mHdrHash.bytes);
|
||||
|
||||
// proccess main header
|
||||
mHdr.importBinary((byte_t*)&mHdrBlock.header, sizeof(nx::sNcaHeader));
|
||||
|
||||
// determine keys
|
||||
generateNcaBodyEncryptionKeys();
|
||||
|
||||
// import/generate fs header data
|
||||
generatePartitionConfiguration();
|
||||
|
||||
// validate signatures
|
||||
if (mVerify)
|
||||
validateNcaSignatures();
|
||||
|
||||
// display header
|
||||
if (mCliOutputType >= OUTPUT_NORMAL)
|
||||
displayHeader();
|
||||
|
||||
// process partition
|
||||
processPartitions();
|
||||
|
||||
/*
|
||||
NCA is a file container
|
||||
A hashed and signed file container
|
||||
|
||||
To verify a NCA: (R=regular step)
|
||||
1 - decrypt header (R)
|
||||
2 - verify signature[0]
|
||||
3 - validate hashes of fs_headers
|
||||
4 - determine how to read/decrypt the partitions (R)
|
||||
5 - validate the partitions depending on their hash method
|
||||
6 - if this NCA is a Program or Patch, open main.npdm from partition0
|
||||
7 - validate ACID
|
||||
8 - use public key in ACID to verify NCA signature[1]
|
||||
|
||||
Things to consider
|
||||
* because of the manditory steps between verifcation steps
|
||||
the NCA should be ready to be pulled to pieces before any printing is done
|
||||
so the verification text can be presented without interuption
|
||||
|
||||
*/
|
||||
}
|
||||
|
||||
void NcaProcess::setInputFile(fnd::IFile* file, size_t offset, size_t size)
|
||||
{
|
||||
mReader = new OffsetAdjustedIFile(file, offset, size);
|
||||
}
|
||||
|
||||
void NcaProcess::setKeyset(const sKeyset* keyset)
|
||||
{
|
||||
mKeyset = keyset;
|
||||
}
|
||||
|
||||
void NcaProcess::setCliOutputMode(CliOutputType type)
|
||||
{
|
||||
mCliOutputType = type;
|
||||
}
|
||||
|
||||
void NcaProcess::setVerifyMode(bool verify)
|
||||
{
|
||||
mVerify = verify;
|
||||
}
|
||||
|
||||
void NcaProcess::setPartition0ExtractPath(const std::string& path)
|
||||
{
|
||||
mPartitionPath[0].path = path;
|
||||
mPartitionPath[0].doExtract = true;
|
||||
}
|
||||
|
||||
void NcaProcess::setPartition1ExtractPath(const std::string& path)
|
||||
{
|
||||
mPartitionPath[1].path = path;
|
||||
mPartitionPath[1].doExtract = true;
|
||||
}
|
||||
|
||||
void NcaProcess::setPartition2ExtractPath(const std::string& path)
|
||||
{
|
||||
mPartitionPath[2].path = path;
|
||||
mPartitionPath[2].doExtract = true;
|
||||
}
|
||||
|
||||
void NcaProcess::setPartition3ExtractPath(const std::string& path)
|
||||
{
|
||||
mPartitionPath[3].path = path;
|
||||
mPartitionPath[3].doExtract = true;
|
||||
}
|
||||
|
||||
void NcaProcess::setListFs(bool list_fs)
|
||||
{
|
||||
mListFs = list_fs;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue