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Merge pull request #2930 from DarkLordZach/gamecard-partitions 

file_sys: Add code to access raw gamecard partitions and lazily load them
This commit is contained in:
bunnei 2019-10-14 10:29:10 -04:00 committed by GitHub
parent b41692b69b e0b9ee9b94
commit cd2efed922
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 128 additions and 26 deletions
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114
src/core/file_sys/card_image.cpp
View File

@ -31,7 +31,7 @@ constexpr std::array partition_names{
XCI::XCI(VirtualFile file_)
: file(std::move(file_)), program_nca_status{Loader::ResultStatus::ErrorXCIMissingProgramNCA},
partitions(partition_names.size()) {
partitions(partition_names.size()), partitions_raw(partition_names.size()) {
if (file->ReadObject(&header) != sizeof(GamecardHeader)) {
status = Loader::ResultStatus::ErrorBadXCIHeader;
return;
@ -42,8 +42,10 @@ XCI::XCI(VirtualFile file_)
return;
}
PartitionFilesystem main_hfs(
std::make_shared<OffsetVfsFile>(file, header.hfs_size, header.hfs_offset));
PartitionFilesystem main_hfs(std::make_shared<OffsetVfsFile>(
file, file->GetSize() - header.hfs_offset, header.hfs_offset));
update_normal_partition_end = main_hfs.GetFileOffsets()["secure"];
if (main_hfs.GetStatus() != Loader::ResultStatus::Success) {
status = main_hfs.GetStatus();
@ -55,9 +57,7 @@ XCI::XCI(VirtualFile file_)
const auto partition_idx = static_cast<std::size_t>(partition);
auto raw = main_hfs.GetFile(partition_names[partition_idx]);
if (raw != nullptr) {
partitions[partition_idx] = std::make_shared<PartitionFilesystem>(std::move(raw));
}
partitions_raw[static_cast<std::size_t>(partition)] = std::move(raw);
}
secure_partition = std::make_shared<NSP>(
@ -71,13 +71,7 @@ XCI::XCI(VirtualFile file_)
program_nca_status = Loader::ResultStatus::ErrorXCIMissingProgramNCA;
}
auto result = AddNCAFromPartition(XCIPartition::Update);
if (result != Loader::ResultStatus::Success) {
status = result;
return;
}
result = AddNCAFromPartition(XCIPartition::Normal);
auto result = AddNCAFromPartition(XCIPartition::Normal);
if (result != Loader::ResultStatus::Success) {
status = result;
return;
@ -104,34 +98,114 @@ Loader::ResultStatus XCI::GetProgramNCAStatus() const {
return program_nca_status;
}
VirtualDir XCI::GetPartition(XCIPartition partition) const {
VirtualDir XCI::GetPartition(XCIPartition partition) {
const auto id = static_cast<std::size_t>(partition);
if (partitions[id] == nullptr && partitions_raw[id] != nullptr) {
partitions[id] = std::make_shared<PartitionFilesystem>(partitions_raw[id]);
}
return partitions[static_cast<std::size_t>(partition)];
}
std::vector<VirtualDir> XCI::GetPartitions() {
std::vector<VirtualDir> out;
for (const auto& id :
{XCIPartition::Update, XCIPartition::Normal, XCIPartition::Secure, XCIPartition::Logo}) {
const auto part = GetPartition(id);
if (part != nullptr) {
out.push_back(part);
}
}
return out;
}
std::shared_ptr<NSP> XCI::GetSecurePartitionNSP() const {
return secure_partition;
}
VirtualDir XCI::GetSecurePartition() const {
VirtualDir XCI::GetSecurePartition() {
return GetPartition(XCIPartition::Secure);
}
VirtualDir XCI::GetNormalPartition() const {
VirtualDir XCI::GetNormalPartition() {
return GetPartition(XCIPartition::Normal);
}
VirtualDir XCI::GetUpdatePartition() const {
VirtualDir XCI::GetUpdatePartition() {
return GetPartition(XCIPartition::Update);
}
VirtualDir XCI::GetLogoPartition() const {
VirtualDir XCI::GetLogoPartition() {
return GetPartition(XCIPartition::Logo);
}
VirtualFile XCI::GetPartitionRaw(XCIPartition partition) const {
return partitions_raw[static_cast<std::size_t>(partition)];
}
VirtualFile XCI::GetSecurePartitionRaw() const {
return GetPartitionRaw(XCIPartition::Secure);
}
VirtualFile XCI::GetStoragePartition0() const {
return std::make_shared<OffsetVfsFile>(file, update_normal_partition_end, 0, "partition0");
}
VirtualFile XCI::GetStoragePartition1() const {
return std::make_shared<OffsetVfsFile>(file, file->GetSize() - update_normal_partition_end,
update_normal_partition_end, "partition1");
}
VirtualFile XCI::GetNormalPartitionRaw() const {
return GetPartitionRaw(XCIPartition::Normal);
}
VirtualFile XCI::GetUpdatePartitionRaw() const {
return GetPartitionRaw(XCIPartition::Update);
}
VirtualFile XCI::GetLogoPartitionRaw() const {
return GetPartitionRaw(XCIPartition::Logo);
}
u64 XCI::GetProgramTitleID() const {
return secure_partition->GetProgramTitleID();
}
u32 XCI::GetSystemUpdateVersion() {
const auto update = GetPartition(XCIPartition::Update);
if (update == nullptr)
return 0;
for (const auto& file : update->GetFiles()) {
NCA nca{file, nullptr, 0, keys};
if (nca.GetStatus() != Loader::ResultStatus::Success)
continue;
if (nca.GetType() == NCAContentType::Meta && nca.GetTitleId() == 0x0100000000000816) {
const auto dir = nca.GetSubdirectories()[0];
const auto cnmt = dir->GetFile("SystemUpdate_0100000000000816.cnmt");
if (cnmt == nullptr)
continue;
CNMT cnmt_data{cnmt};
const auto metas = cnmt_data.GetMetaRecords();
if (metas.empty())
continue;
return metas[0].title_version;
}
}
return 0;
}
u64 XCI::GetSystemUpdateTitleID() const {
return 0x0100000000000816;
}
bool XCI::HasProgramNCA() const {
return program != nullptr;
}
@ -201,7 +275,7 @@ std::array<u8, 0x200> XCI::GetCertificate() const {
Loader::ResultStatus XCI::AddNCAFromPartition(XCIPartition part) {
const auto partition_index = static_cast<std::size_t>(part);
const auto& partition = partitions[partition_index];
const auto partition = GetPartition(part);
if (partition == nullptr) {
return Loader::ResultStatus::ErrorXCIMissingPartition;
@ -232,7 +306,7 @@ Loader::ResultStatus XCI::AddNCAFromPartition(XCIPartition part) {
return Loader::ResultStatus::Success;
}
u8 XCI::GetFormatVersion() const {
u8 XCI::GetFormatVersion() {
return GetLogoPartition() == nullptr ? 0x1 : 0x2;
}
} // namespace FileSys

23
src/core/file_sys/card_image.h
View File

@ -81,14 +81,24 @@ public:
Loader::ResultStatus GetStatus() const;
Loader::ResultStatus GetProgramNCAStatus() const;
u8 GetFormatVersion() const;
u8 GetFormatVersion();
VirtualDir GetPartition(XCIPartition partition);
std::vector<VirtualDir> GetPartitions();
VirtualDir GetPartition(XCIPartition partition) const;
std::shared_ptr<NSP> GetSecurePartitionNSP() const;
VirtualDir GetSecurePartition() const;
VirtualDir GetNormalPartition() const;
VirtualDir GetUpdatePartition() const;
VirtualDir GetLogoPartition() const;
VirtualDir GetSecurePartition();
VirtualDir GetNormalPartition();
VirtualDir GetUpdatePartition();
VirtualDir GetLogoPartition();
VirtualFile GetPartitionRaw(XCIPartition partition) const;
VirtualFile GetSecurePartitionRaw() const;
VirtualFile GetStoragePartition0() const;
VirtualFile GetStoragePartition1() const;
VirtualFile GetNormalPartitionRaw() const;
VirtualFile GetUpdatePartitionRaw() const;
VirtualFile GetLogoPartitionRaw() const;
u64 GetProgramTitleID() const;
u32 GetSystemUpdateVersion();
@ -123,6 +133,7 @@ private:
Loader::ResultStatus program_nca_status;
std::vector<VirtualDir> partitions;
std::vector<VirtualFile> partitions_raw;
std::shared_ptr<NSP> secure_partition;
std::shared_ptr<NCA> program;
std::vector<std::shared_ptr<NCA>> ncas;

11
src/core/file_sys/partition_filesystem.cpp
View File

@ -65,6 +65,9 @@ PartitionFilesystem::PartitionFilesystem(std::shared_ptr<VfsFile> file) {
std::string name(
reinterpret_cast<const char*>(&file_data[strtab_offset + entry.strtab_offset]));
offsets.insert_or_assign(name, content_offset + entry.offset);
sizes.insert_or_assign(name, entry.size);
pfs_files.emplace_back(std::make_shared<OffsetVfsFile>(
file, entry.size, content_offset + entry.offset, std::move(name)));
}
@ -78,6 +81,14 @@ Loader::ResultStatus PartitionFilesystem::GetStatus() const {
return status;
}
std::map<std::string, u64> PartitionFilesystem::GetFileOffsets() const {
return offsets;
}
std::map<std::string, u64> PartitionFilesystem::GetFileSizes() const {
return sizes;
}
std::vector<std::shared_ptr<VfsFile>> PartitionFilesystem::GetFiles() const {
return pfs_files;
}

6
src/core/file_sys/partition_filesystem.h
View File

@ -29,6 +29,9 @@ public:
Loader::ResultStatus GetStatus() const;
std::map<std::string, u64> GetFileOffsets() const;
std::map<std::string, u64> GetFileSizes() const;
std::vector<std::shared_ptr<VfsFile>> GetFiles() const override;
std::vector<std::shared_ptr<VfsDirectory>> GetSubdirectories() const override;
std::string GetName() const override;
@ -80,6 +83,9 @@ private:
bool is_hfs = false;
std::size_t content_offset = 0;
std::map<std::string, u64> offsets;
std::map<std::string, u64> sizes;
std::vector<VirtualFile> pfs_files;
};