diff options
| -rw-r--r-- | src/core/hle/service/filesystem/fsp_srv.cpp | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/src/core/hle/service/filesystem/fsp_srv.cpp b/src/core/hle/service/filesystem/fsp_srv.cpp index 56102a3db..3d1c2ecda 100644 --- a/src/core/hle/service/filesystem/fsp_srv.cpp +++ b/src/core/hle/service/filesystem/fsp_srv.cpp @@ -11,6 +11,7 @@ #include "common/assert.h" #include "common/common_types.h" +#include "common/hex_util.h" #include "common/logging/log.h" #include "common/string_util.h" #include "core/file_sys/directory.h" @@ -451,6 +452,149 @@ private: VfsDirectoryServiceWrapper backend; }; +class ISaveDataInfoReader final : public ServiceFramework<ISaveDataInfoReader> { +public: + explicit ISaveDataInfoReader(FileSys::SaveDataSpaceId space) + : ServiceFramework("ISaveDataInfoReader") { + static const FunctionInfo functions[] = { + {0, &ISaveDataInfoReader::ReadSaveDataInfo, "ReadSaveDataInfo"}, + }; + RegisterHandlers(functions); + + FindAllSaves(space); + } + + void ReadSaveDataInfo(Kernel::HLERequestContext& ctx) { + // Calculate how many entries we can fit in the output buffer + const u64 count_entries = ctx.GetWriteBufferSize() / sizeof(SaveDataInfo); + + // Cap at total number of entries. + const u64 actual_entries = std::min(count_entries, info.size() - next_entry_index); + + // Determine data start and end + const auto* begin = reinterpret_cast<u8*>(info.data() + next_entry_index); + const auto* end = reinterpret_cast<u8*>(info.data() + next_entry_index + actual_entries); + const auto range_size = static_cast<std::size_t>(std::distance(begin, end)); + + next_entry_index += actual_entries; + + // Write the data to memory + ctx.WriteBuffer(begin, range_size); + + IPC::ResponseBuilder rb{ctx, 4}; + rb.Push(RESULT_SUCCESS); + rb.Push(actual_entries); + } + +private: + static u64 stoull_be(std::string_view str) { + if (str.size() != 16) + return 0; + + const auto bytes = Common::HexStringToArray<0x8>(str); + u64 out{}; + std::memcpy(&out, bytes.data(), sizeof(u64)); + + return Common::swap64(out); + } + + static std::array<u8, 0x10> ArraySwap(const std::array<u8, 0x10>& in) { + std::array<u8, 0x10> out; + for (std::size_t i = 0; i < in.size(); ++i) { + out[0xF - i] = in[i]; + } + + return out; + } + + void FindAllSaves(FileSys::SaveDataSpaceId space) { + const auto save_root = OpenSaveDataSpace(space); + ASSERT(save_root.Succeeded()); + + for (const auto& type : (*save_root)->GetSubdirectories()) { + if (type->GetName() == "save") { + for (const auto& save_id : type->GetSubdirectories()) { + for (const auto& user_id : save_id->GetSubdirectories()) { + const auto save_id_numeric = stoull_be(save_id->GetName()); + const auto user_id_numeric = + ArraySwap(Common::HexStringToArray<0x10>(user_id->GetName())); + if (save_id_numeric != 0) { + // System Save Data + info.emplace_back(SaveDataInfo{ + 0, + space, + FileSys::SaveDataType::SystemSaveData, + {}, + user_id_numeric, + save_id_numeric, + 0, + user_id->GetSize(), + {}, + }); + + continue; + } + + for (const auto& title_id : user_id->GetSubdirectories()) { + const auto device = + std::all_of(user_id_numeric.begin(), user_id_numeric.end(), + [](u8 val) { return val == 0; }); + info.emplace_back(SaveDataInfo{ + 0, + space, + device ? FileSys::SaveDataType::DeviceSaveData + : FileSys::SaveDataType::SaveData, + {}, + user_id_numeric, + save_id_numeric, + stoull_be(title_id->GetName()), + title_id->GetSize(), + {}, + }); + } + } + } + } else if (space == FileSys::SaveDataSpaceId::TemporaryStorage) { + // Temporary Storage + for (const auto& user_id : type->GetSubdirectories()) { + for (const auto& title_id : user_id->GetSubdirectories()) { + if (!title_id->GetFiles().empty() || + !title_id->GetSubdirectories().empty()) { + info.emplace_back(SaveDataInfo{ + 0, + space, + FileSys::SaveDataType::TemporaryStorage, + {}, + Common::HexStringToArray<0x10, true>(user_id->GetName()), + stoull_be(type->GetName()), + stoull_be(title_id->GetName()), + title_id->GetSize(), + {}, + }); + } + } + } + } + } + } + + struct SaveDataInfo { + u64_le save_id_unknown; + FileSys::SaveDataSpaceId space; + FileSys::SaveDataType type; + INSERT_PADDING_BYTES(0x6); + std::array<u8, 0x10> user_id; + u64_le save_id; + u64_le title_id; + u64_le save_image_size; + INSERT_PADDING_BYTES(0x28); + }; + static_assert(sizeof(SaveDataInfo) == 0x60, "SaveDataInfo has incorrect size."); + + std::vector<SaveDataInfo> info; + u64 next_entry_index = 0; +}; + FSP_SRV::FSP_SRV() : ServiceFramework("fsp-srv") { // clang-format off static const FunctionInfo functions[] = { |