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authorZach Hilman <zachhilman@gmail.com>2018-10-28 19:59:17 +0100
committerZach Hilman <zachhilman@gmail.com>2018-10-29 18:54:39 +0100
commit5ee19add1bf221bd5259e4df76089252f04ce060 (patch)
tree85971cd6073c2d625a53ae30584b55db3cf37d67
parentfsp_srv: Implement command 61: OpenSaveDataInfoReaderBySaveDataSpaceId (diff)
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-rw-r--r--src/core/hle/service/filesystem/fsp_srv.cpp144
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[] = {