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Merge pull request #11309 from liamwhite/full-xci
file_sys/card_image: support dumps with prepended key area
This commit is contained in:
commit
9d6ac28999
2 changed files with 42 additions and 7 deletions
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@ -31,13 +31,9 @@ XCI::XCI(VirtualFile file_, u64 program_id, size_t program_index)
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: file(std::move(file_)), program_nca_status{Loader::ResultStatus::ErrorXCIMissingProgramNCA},
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: file(std::move(file_)), program_nca_status{Loader::ResultStatus::ErrorXCIMissingProgramNCA},
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partitions(partition_names.size()),
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partitions(partition_names.size()),
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partitions_raw(partition_names.size()), keys{Core::Crypto::KeyManager::Instance()} {
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partitions_raw(partition_names.size()), keys{Core::Crypto::KeyManager::Instance()} {
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if (file->ReadObject(&header) != sizeof(GamecardHeader)) {
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const auto header_status = TryReadHeader();
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status = Loader::ResultStatus::ErrorBadXCIHeader;
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if (header_status != Loader::ResultStatus::Success) {
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return;
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status = header_status;
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}
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if (header.magic != Common::MakeMagic('H', 'E', 'A', 'D')) {
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status = Loader::ResultStatus::ErrorBadXCIHeader;
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return;
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return;
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}
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}
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@ -316,6 +312,44 @@ Loader::ResultStatus XCI::AddNCAFromPartition(XCIPartition part) {
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return Loader::ResultStatus::Success;
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return Loader::ResultStatus::Success;
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}
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}
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Loader::ResultStatus XCI::TryReadHeader() {
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constexpr size_t CardInitialDataRegionSize = 0x1000;
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// Define the function we'll use to determine if we read a valid header.
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const auto ReadCardHeader = [&]() {
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// Ensure we can read the entire header. If we can't, we can't read the card image.
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if (file->ReadObject(&header) != sizeof(GamecardHeader)) {
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return Loader::ResultStatus::ErrorBadXCIHeader;
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}
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// Ensure the header magic matches. If it doesn't, this isn't a card image header.
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if (header.magic != Common::MakeMagic('H', 'E', 'A', 'D')) {
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return Loader::ResultStatus::ErrorBadXCIHeader;
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}
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// We read a card image header.
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return Loader::ResultStatus::Success;
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};
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// Try to read the header directly.
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if (ReadCardHeader() == Loader::ResultStatus::Success) {
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return Loader::ResultStatus::Success;
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}
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// Get the size of the file.
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const size_t card_image_size = file->GetSize();
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// If we are large enough to have a key area, offset past the key area and retry.
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if (card_image_size >= CardInitialDataRegionSize) {
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file = std::make_shared<OffsetVfsFile>(file, card_image_size - CardInitialDataRegionSize,
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CardInitialDataRegionSize);
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return ReadCardHeader();
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}
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// We had no header and aren't large enough to have a key area, so this can't be parsed.
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return Loader::ResultStatus::ErrorBadXCIHeader;
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}
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u8 XCI::GetFormatVersion() {
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u8 XCI::GetFormatVersion() {
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return GetLogoPartition() == nullptr ? 0x1 : 0x2;
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return GetLogoPartition() == nullptr ? 0x1 : 0x2;
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}
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}
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@ -128,6 +128,7 @@ public:
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private:
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private:
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Loader::ResultStatus AddNCAFromPartition(XCIPartition part);
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Loader::ResultStatus AddNCAFromPartition(XCIPartition part);
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Loader::ResultStatus TryReadHeader();
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VirtualFile file;
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VirtualFile file;
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GamecardHeader header{};
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GamecardHeader header{};
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