file_sys/archive_ncch: Use AM to get title content path, add ExeFS support and support for additional content indexes

src/core/file_sys/archive_ncch.cpp

@@ -14,7 +14,7 @@
 #include "core/file_sys/errors.h"
 #include "core/file_sys/ivfc_archive.h"
 #include "core/file_sys/ncch_container.h"
-#include "core/file_sys/title_metadata.h"
+#include "core/hle/service/am/am.h"
 #include "core/hle/service/fs/archive.h"
 #include "core/loader/loader.h"
 
@@ -23,42 +23,72 @@
 
 namespace FileSys {
 
-static std::string GetNCCHContainerPath(const std::string& nand_directory) {
+enum class NCCHFilePathType : u32 {
-    return Common::StringFromFormat("%s%s/title/", nand_directory.c_str(), SYSTEM_ID);
+    RomFS = 0,
-}
+    Code = 1,
+    ExeFS = 2,
+};
 
-static std::string GetNCCHPath(const std::string& mount_point, u32 high, u32 low) {
+struct NCCHArchivePath {
-    u32 content_id = 0;
+    u64_le tid;
+    u32_le media_type;
+    u32_le unknown;
+};
+static_assert(sizeof(NCCHArchivePath) == 0x10, "NCCHArchivePath has wrong size!");
 
-    // TODO(shinyquagsire23): Title database should be doing this path lookup
+struct NCCHFilePath {
-    std::string content_path =
+    u32_le open_type;
-        Common::StringFromFormat("%s%08x/%08x/content/", mount_point.c_str(), high, low);
+    u32_le content_index;
-    std::string tmd_path = content_path + "00000000.tmd";
+    u32_le filepath_type;
-    TitleMetadata tmd(tmd_path);
+    std::array<char, 8> exefs_filepath;
-    if (tmd.Load() == Loader::ResultStatus::Success) {
+};
-        content_id = tmd.GetBootContentID();
+static_assert(sizeof(NCCHFilePath) == 0x14, "NCCHFilePath has wrong size!");
+
+ResultVal<std::unique_ptr<FileBackend>> NCCHArchive::OpenFile(const Path& path,
+                                                              const Mode& mode) const {
+    if (path.GetType() != LowPathType::Binary) {
+        LOG_ERROR(Service_FS, "Path need to be Binary");
+        return ERROR_INVALID_PATH;
     }
 
-    return Common::StringFromFormat("%s%08x.app", content_path.c_str(), content_id);
+    std::vector<u8> binary = path.AsBinary();
-}
+    if (binary.size() != sizeof(NCCHFilePath)) {
+        LOG_ERROR(Service_FS, "Wrong path size %zu", binary.size());
+        return ERROR_INVALID_PATH;
+    }
 
-ArchiveFactory_NCCH::ArchiveFactory_NCCH(const std::string& nand_directory)
+    NCCHFilePath openfile_path;
-    : mount_point(GetNCCHContainerPath(nand_directory)) {}
+    std::memcpy(&openfile_path, binary.data(), sizeof(NCCHFilePath));
 
-ResultVal<std::unique_ptr<ArchiveBackend>> ArchiveFactory_NCCH::Open(const Path& path) {
+    std::string file_path =
-    auto vec = path.AsBinary();
+        Service::AM::GetTitleContentPath(media_type, title_id, openfile_path.content_index);
-    const u32* data = reinterpret_cast<u32*>(vec.data());
+    auto ncch_container = NCCHContainer(file_path);
-    u32 high = data[1];
-    u32 low = data[0];
-    std::string file_path = GetNCCHPath(mount_point, high, low);
 
+    Loader::ResultStatus result;
+    std::unique_ptr<FileBackend> file;
+
+    // NCCH RomFS
+    NCCHFilePathType filepath_type = static_cast<NCCHFilePathType>(openfile_path.filepath_type);
+    if (filepath_type == NCCHFilePathType::RomFS) {
         std::shared_ptr<FileUtil::IOFile> romfs_file;
         u64 romfs_offset = 0;
         u64 romfs_size = 0;
-    auto ncch_container = NCCHContainer(file_path);
 
-    if (ncch_container.ReadRomFS(romfs_file, romfs_offset, romfs_size) !=
+        result = ncch_container.ReadRomFS(romfs_file, romfs_offset, romfs_size);
-        Loader::ResultStatus::Success) {
+        file = std::make_unique<IVFCFile>(romfs_file, romfs_offset, romfs_size);
+    } else if (filepath_type == NCCHFilePathType::Code ||
+               filepath_type == NCCHFilePathType::ExeFS) {
+        std::vector<u8> buffer;
+
+        // Load NCCH .code or icon/banner/logo
+        result = ncch_container.LoadSectionExeFS(openfile_path.exefs_filepath.data(), buffer);
+        file = std::make_unique<NCCHFile>(buffer);
+    } else {
+        LOG_ERROR(Service_FS, "Unknown NCCH archive type %u!", openfile_path.filepath_type);
+        result = Loader::ResultStatus::Error;
+    }
+
+    if (result != Loader::ResultStatus::Success) {
         // High Title ID of the archive: The category (https://3dbrew.org/wiki/Title_list).
         constexpr u32 shared_data_archive = 0x0004009B;
         constexpr u32 system_data_archive = 0x000400DB;
@@ -68,32 +98,149 @@ ResultVal<std::unique_ptr<ArchiveBackend>> ArchiveFactory_NCCH::Open(const Path&
         constexpr u32 region_manifest = 0x00010402;
         constexpr u32 ng_word_list = 0x00010302;
 
+        u32 high = static_cast<u32>(title_id >> 32);
+        u32 low = static_cast<u32>(title_id & 0xFFFFFFFF);
+
         LOG_DEBUG(Service_FS, "Full Path: %s. Category: 0x%X. Path: 0x%X.", path.DebugStr().c_str(),
                   high, low);
 
+        std::string archive_name;
         if (high == shared_data_archive) {
-            if (low == mii_data) {
+            if (low == mii_data)
-                LOG_ERROR(Service_FS, "Failed to get a handle for shared data archive: Mii data. ");
+                archive_name = "Mii Data";
-                Core::System::GetInstance().SetStatus(Core::System::ResultStatus::ErrorSystemFiles,
+            else if (low == region_manifest)
-                                                      "Mii data");
+                archive_name = "Region manifest";
-            } else if (low == region_manifest) {
-                LOG_ERROR(Service_FS,
-                          "Failed to get a handle for shared data archive: region manifest.");
-                Core::System::GetInstance().SetStatus(Core::System::ResultStatus::ErrorSystemFiles,
-                                                      "Region manifest");
-            }
         } else if (high == system_data_archive) {
-            if (low == ng_word_list) {
+            if (low == ng_word_list)
-                LOG_ERROR(Service_FS,
+                archive_name = "NG bad word list";
-                          "Failed to get a handle for system data archive: NG bad word list.");
-                Core::System::GetInstance().SetStatus(Core::System::ResultStatus::ErrorSystemFiles,
-                                                      "NG bad word list");
         }
+
+        if (!archive_name.empty()) {
+            LOG_ERROR(Service_FS, "Failed to get a handle for shared data archive: %s. ",
+                      archive_name.c_str());
+            Core::System::GetInstance().SetStatus(Core::System::ResultStatus::ErrorSystemFiles,
+                                                  archive_name.c_str());
         }
         return ERROR_NOT_FOUND;
     }
 
-    auto archive = std::make_unique<IVFCArchive>(romfs_file, romfs_offset, romfs_size);
+    return MakeResult<std::unique_ptr<FileBackend>>(std::move(file));
+}
+
+ResultCode NCCHArchive::DeleteFile(const Path& path) const {
+    LOG_CRITICAL(Service_FS, "Attempted to delete a file from an NCCH archive (%s).",
+                 GetName().c_str());
+    // TODO(Subv): Verify error code
+    return ResultCode(ErrorDescription::NoData, ErrorModule::FS, ErrorSummary::Canceled,
+                      ErrorLevel::Status);
+}
+
+ResultCode NCCHArchive::RenameFile(const Path& src_path, const Path& dest_path) const {
+    LOG_CRITICAL(Service_FS, "Attempted to rename a file within an NCCH archive (%s).",
+                 GetName().c_str());
+    // TODO(wwylele): Use correct error code
+    return ResultCode(-1);
+}
+
+ResultCode NCCHArchive::DeleteDirectory(const Path& path) const {
+    LOG_CRITICAL(Service_FS, "Attempted to delete a directory from an NCCH archive (%s).",
+                 GetName().c_str());
+    // TODO(wwylele): Use correct error code
+    return ResultCode(-1);
+}
+
+ResultCode NCCHArchive::DeleteDirectoryRecursively(const Path& path) const {
+    LOG_CRITICAL(Service_FS, "Attempted to delete a directory from an NCCH archive (%s).",
+                 GetName().c_str());
+    // TODO(wwylele): Use correct error code
+    return ResultCode(-1);
+}
+
+ResultCode NCCHArchive::CreateFile(const Path& path, u64 size) const {
+    LOG_CRITICAL(Service_FS, "Attempted to create a file in an NCCH archive (%s).",
+                 GetName().c_str());
+    // TODO: Verify error code
+    return ResultCode(ErrorDescription::NotAuthorized, ErrorModule::FS, ErrorSummary::NotSupported,
+                      ErrorLevel::Permanent);
+}
+
+ResultCode NCCHArchive::CreateDirectory(const Path& path) const {
+    LOG_CRITICAL(Service_FS, "Attempted to create a directory in an NCCH archive (%s).",
+                 GetName().c_str());
+    // TODO(wwylele): Use correct error code
+    return ResultCode(-1);
+}
+
+ResultCode NCCHArchive::RenameDirectory(const Path& src_path, const Path& dest_path) const {
+    LOG_CRITICAL(Service_FS, "Attempted to rename a file within an NCCH archive (%s).",
+                 GetName().c_str());
+    // TODO(wwylele): Use correct error code
+    return ResultCode(-1);
+}
+
+ResultVal<std::unique_ptr<DirectoryBackend>> NCCHArchive::OpenDirectory(const Path& path) const {
+    LOG_CRITICAL(Service_FS, "Attempted to open a directory within an NCCH archive (%s).",
+                 GetName().c_str());
+    // TODO(shinyquagsire23): Use correct error code
+    return ResultCode(-1);
+}
+
+u64 NCCHArchive::GetFreeBytes() const {
+    LOG_WARNING(Service_FS, "Attempted to get the free space in an NCCH archive");
+    return 0;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+ResultVal<size_t> NCCHFile::Read(const u64 offset, const size_t length, u8* buffer) const {
+    LOG_TRACE(Service_FS, "called offset=%" PRIu64 ", length=%zu", offset, length);
+    size_t length_left = static_cast<size_t>(data_size - offset);
+    size_t read_length = static_cast<size_t>(std::min(length, length_left));
+
+    size_t available_size = static_cast<size_t>(file_buffer.size() - offset);
+    size_t copy_size = std::min(length, available_size);
+    memcpy(buffer, file_buffer.data() + offset, copy_size);
+
+    return MakeResult<size_t>(copy_size);
+}
+
+ResultVal<size_t> NCCHFile::Write(const u64 offset, const size_t length, const bool flush,
+                                  const u8* buffer) const {
+    LOG_ERROR(Service_FS, "Attempted to write to NCCH file");
+    // TODO(shinyquagsire23): Find error code
+    return MakeResult<size_t>(0);
+}
+
+u64 NCCHFile::GetSize() const {
+    return file_buffer.size();
+}
+
+bool NCCHFile::SetSize(const u64 size) const {
+    LOG_ERROR(Service_FS, "Attempted to set the size of an NCCH file");
+    return false;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+ArchiveFactory_NCCH::ArchiveFactory_NCCH() {}
+
+ResultVal<std::unique_ptr<ArchiveBackend>> ArchiveFactory_NCCH::Open(const Path& path) {
+    if (path.GetType() != LowPathType::Binary) {
+        LOG_ERROR(Service_FS, "Path need to be Binary");
+        return ERROR_INVALID_PATH;
+    }
+
+    std::vector<u8> binary = path.AsBinary();
+    if (binary.size() != sizeof(NCCHArchivePath)) {
+        LOG_ERROR(Service_FS, "Wrong path size %zu", binary.size());
+        return ERROR_INVALID_PATH;
+    }
+
+    NCCHArchivePath open_path;
+    std::memcpy(&open_path, binary.data(), sizeof(NCCHArchivePath));
+
+    auto archive = std::make_unique<NCCHArchive>(
+        open_path.tid, static_cast<Service::FS::MediaType>(open_path.media_type & 0xFF));
     return MakeResult<std::unique_ptr<ArchiveBackend>>(std::move(archive));
 }
 

src/core/file_sys/archive_ncch.h

@@ -7,17 +7,71 @@
 #include <memory>
 #include <string>
 #include "core/file_sys/archive_backend.h"
+#include "core/file_sys/file_backend.h"
 #include "core/hle/result.h"
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 // FileSys namespace
 
+namespace Service {
+namespace FS {
+enum class MediaType : u32;
+}
+}
+
 namespace FileSys {
 
+/// Archive backend for NCCH Archives (RomFS, ExeFS)
+class NCCHArchive : public ArchiveBackend {
+public:
+    explicit NCCHArchive(u64 title_id, Service::FS::MediaType media_type)
+        : title_id(title_id), media_type(media_type) {}
+
+    std::string GetName() const override {
+        return "NCCHArchive";
+    }
+
+    ResultVal<std::unique_ptr<FileBackend>> OpenFile(const Path& path,
+                                                     const Mode& mode) const override;
+    ResultCode DeleteFile(const Path& path) const override;
+    ResultCode RenameFile(const Path& src_path, const Path& dest_path) const override;
+    ResultCode DeleteDirectory(const Path& path) const override;
+    ResultCode DeleteDirectoryRecursively(const Path& path) const override;
+    ResultCode CreateFile(const Path& path, u64 size) const override;
+    ResultCode CreateDirectory(const Path& path) const override;
+    ResultCode RenameDirectory(const Path& src_path, const Path& dest_path) const override;
+    ResultVal<std::unique_ptr<DirectoryBackend>> OpenDirectory(const Path& path) const override;
+    u64 GetFreeBytes() const override;
+
+protected:
+    u64 title_id;
+    Service::FS::MediaType media_type;
+};
+
+// File backend for NCCH files
+class NCCHFile : public FileBackend {
+public:
+    NCCHFile(std::vector<u8> buffer) : file_buffer(buffer) {}
+
+    ResultVal<size_t> Read(u64 offset, size_t length, u8* buffer) const override;
+    ResultVal<size_t> Write(u64 offset, size_t length, bool flush, const u8* buffer) const override;
+    u64 GetSize() const override;
+    bool SetSize(u64 size) const override;
+    bool Close() const override {
+        return false;
+    }
+    void Flush() const override {}
+
+private:
+    std::vector<u8> file_buffer;
+    u64 data_offset;
+    u64 data_size;
+};
+
 /// File system interface to the NCCH archive
 class ArchiveFactory_NCCH final : public ArchiveFactory {
 public:
-    explicit ArchiveFactory_NCCH(const std::string& mount_point);
+    explicit ArchiveFactory_NCCH();
 
     std::string GetName() const override {
         return "NCCH";
@@ -26,9 +80,6 @@ public:
     ResultVal<std::unique_ptr<ArchiveBackend>> Open(const Path& path) override;
     ResultCode Format(const Path& path, const FileSys::ArchiveFormatInfo& format_info) override;
     ResultVal<ArchiveFormatInfo> GetFormatInfo(const Path& path) const override;
-
-private:
-    std::string mount_point;
 };
 
 } // namespace FileSys

src/core/hle/service/fs/archive.cpp

@@ -559,7 +559,7 @@ void RegisterArchiveTypes() {
                   sharedextsavedata_factory->GetMountPoint().c_str());
 
     // Create the NCCH archive, basically a small variation of the RomFS archive
-    auto savedatacheck_factory = std::make_unique<FileSys::ArchiveFactory_NCCH>(nand_directory);
+    auto savedatacheck_factory = std::make_unique<FileSys::ArchiveFactory_NCCH>();
     RegisterArchiveType(std::move(savedatacheck_factory), ArchiveIdCode::NCCH);
 
     auto systemsavedata_factory =