From c91ccbd0ba4118554d7377bbc3bd4c64f9bccf84 Mon Sep 17 00:00:00 2001
From: Max Thomas <mtinc2@gmail.com>
Date: Mon, 25 Sep 2017 00:17:38 -0600
Subject: [PATCH] Loader/NCCH: Add support for loading application updates
(#2927)
* loader/ncch: split NCCH parsing into its own file
* loader/ncch: add support for loading update NCCHs from the SD card
* loader/ncch: fix formatting
* file_sys/ncch_container: Return a value for OpenFile
* loader/ncch: cleanup, always instantiate overlay_ncch to base_ncch
* file_sys/ncch_container: better encryption checks, allow non-app NCCHs to load properly and for the existence of NCCH structures to be checked
* file_sys/ncch_container: pass filepath as a const reference
---
src/core/CMakeLists.txt | 1 +
src/core/file_sys/archive_selfncch.cpp | 28 ++-
src/core/file_sys/archive_selfncch.h | 4 +
src/core/file_sys/ncch_container.cpp | 316 ++++++++++++++++++++++++
src/core/file_sys/ncch_container.h | 244 +++++++++++++++++++
src/core/loader/loader.h | 13 +
src/core/loader/ncch.cpp | 319 +++++--------------------
src/core/loader/ncch.h | 184 +-------------
8 files changed, 670 insertions(+), 439 deletions(-)
create mode 100644 src/core/file_sys/ncch_container.cpp
create mode 100644 src/core/file_sys/ncch_container.h
diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index cd1a8de2d..3ed619991 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -26,6 +26,7 @@ set(SRCS
file_sys/archive_systemsavedata.cpp
file_sys/disk_archive.cpp
file_sys/ivfc_archive.cpp
+ file_sys/ncch_container.cpp
file_sys/path_parser.cpp
file_sys/savedata_archive.cpp
frontend/camera/blank_camera.cpp
diff --git a/src/core/file_sys/archive_selfncch.cpp b/src/core/file_sys/archive_selfncch.cpp
index 298a37a44..7dc91a405 100644
--- a/src/core/file_sys/archive_selfncch.cpp
+++ b/src/core/file_sys/archive_selfncch.cpp
@@ -102,8 +102,7 @@ public:
switch (static_cast<SelfNCCHFilePathType>(file_path.type)) {
case SelfNCCHFilePathType::UpdateRomFS:
- LOG_WARNING(Service_FS, "(STUBBED) open update RomFS");
- return OpenRomFS();
+ return OpenUpdateRomFS();
case SelfNCCHFilePathType::RomFS:
return OpenRomFS();
@@ -179,6 +178,17 @@ private:
}
}
+ ResultVal<std::unique_ptr<FileBackend>> OpenUpdateRomFS() const {
+ if (ncch_data.update_romfs_file) {
+ return MakeResult<std::unique_ptr<FileBackend>>(std::make_unique<IVFCFile>(
+ ncch_data.update_romfs_file, ncch_data.update_romfs_offset,
+ ncch_data.update_romfs_size));
+ } else {
+ LOG_INFO(Service_FS, "Unable to read update RomFS");
+ return ERROR_ROMFS_NOT_FOUND;
+ }
+ }
+
ResultVal<std::unique_ptr<FileBackend>> OpenExeFS(const std::string& filename) const {
if (filename == "icon") {
if (ncch_data.icon) {
@@ -218,11 +228,19 @@ private:
};
ArchiveFactory_SelfNCCH::ArchiveFactory_SelfNCCH(Loader::AppLoader& app_loader) {
- std::shared_ptr<FileUtil::IOFile> romfs_file_;
+ std::shared_ptr<FileUtil::IOFile> romfs_file;
if (Loader::ResultStatus::Success ==
- app_loader.ReadRomFS(romfs_file_, ncch_data.romfs_offset, ncch_data.romfs_size)) {
+ app_loader.ReadRomFS(romfs_file, ncch_data.romfs_offset, ncch_data.romfs_size)) {
- ncch_data.romfs_file = std::move(romfs_file_);
+ ncch_data.romfs_file = std::move(romfs_file);
+ }
+
+ std::shared_ptr<FileUtil::IOFile> update_romfs_file;
+ if (Loader::ResultStatus::Success ==
+ app_loader.ReadUpdateRomFS(update_romfs_file, ncch_data.update_romfs_offset,
+ ncch_data.update_romfs_size)) {
+
+ ncch_data.update_romfs_file = std::move(update_romfs_file);
}
std::vector<u8> buffer;
diff --git a/src/core/file_sys/archive_selfncch.h b/src/core/file_sys/archive_selfncch.h
index f1b971296..f1c659948 100644
--- a/src/core/file_sys/archive_selfncch.h
+++ b/src/core/file_sys/archive_selfncch.h
@@ -24,6 +24,10 @@ struct NCCHData {
std::shared_ptr<FileUtil::IOFile> romfs_file;
u64 romfs_offset = 0;
u64 romfs_size = 0;
+
+ std::shared_ptr<FileUtil::IOFile> update_romfs_file;
+ u64 update_romfs_offset = 0;
+ u64 update_romfs_size = 0;
};
/// File system interface to the SelfNCCH archive
diff --git a/src/core/file_sys/ncch_container.cpp b/src/core/file_sys/ncch_container.cpp
new file mode 100644
index 000000000..59c72f3e9
--- /dev/null
+++ b/src/core/file_sys/ncch_container.cpp
@@ -0,0 +1,316 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <cinttypes>
+#include <cstring>
+#include <memory>
+#include "common/common_types.h"
+#include "common/logging/log.h"
+#include "core/core.h"
+#include "core/file_sys/ncch_container.h"
+#include "core/loader/loader.h"
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// FileSys namespace
+
+namespace FileSys {
+
+static const int kMaxSections = 8; ///< Maximum number of sections (files) in an ExeFs
+static const int kBlockSize = 0x200; ///< Size of ExeFS blocks (in bytes)
+
+/**
+ * Get the decompressed size of an LZSS compressed ExeFS file
+ * @param buffer Buffer of compressed file
+ * @param size Size of compressed buffer
+ * @return Size of decompressed buffer
+ */
+static u32 LZSS_GetDecompressedSize(const u8* buffer, u32 size) {
+ u32 offset_size = *(u32*)(buffer + size - 4);
+ return offset_size + size;
+}
+
+/**
+ * Decompress ExeFS file (compressed with LZSS)
+ * @param compressed Compressed buffer
+ * @param compressed_size Size of compressed buffer
+ * @param decompressed Decompressed buffer
+ * @param decompressed_size Size of decompressed buffer
+ * @return True on success, otherwise false
+ */
+static bool LZSS_Decompress(const u8* compressed, u32 compressed_size, u8* decompressed,
+ u32 decompressed_size) {
+ const u8* footer = compressed + compressed_size - 8;
+ u32 buffer_top_and_bottom = *reinterpret_cast<const u32*>(footer);
+ u32 out = decompressed_size;
+ u32 index = compressed_size - ((buffer_top_and_bottom >> 24) & 0xFF);
+ u32 stop_index = compressed_size - (buffer_top_and_bottom & 0xFFFFFF);
+
+ memset(decompressed, 0, decompressed_size);
+ memcpy(decompressed, compressed, compressed_size);
+
+ while (index > stop_index) {
+ u8 control = compressed[--index];
+
+ for (unsigned i = 0; i < 8; i++) {
+ if (index <= stop_index)
+ break;
+ if (index <= 0)
+ break;
+ if (out <= 0)
+ break;
+
+ if (control & 0x80) {
+ // Check if compression is out of bounds
+ if (index < 2)
+ return false;
+ index -= 2;
+
+ u32 segment_offset = compressed[index] | (compressed[index + 1] << 8);
+ u32 segment_size = ((segment_offset >> 12) & 15) + 3;
+ segment_offset &= 0x0FFF;
+ segment_offset += 2;
+
+ // Check if compression is out of bounds
+ if (out < segment_size)
+ return false;
+
+ for (unsigned j = 0; j < segment_size; j++) {
+ // Check if compression is out of bounds
+ if (out + segment_offset >= decompressed_size)
+ return false;
+
+ u8 data = decompressed[out + segment_offset];
+ decompressed[--out] = data;
+ }
+ } else {
+ // Check if compression is out of bounds
+ if (out < 1)
+ return false;
+ decompressed[--out] = compressed[--index];
+ }
+ control <<= 1;
+ }
+ }
+ return true;
+}
+
+NCCHContainer::NCCHContainer(const std::string& filepath) : filepath(filepath) {
+ file = FileUtil::IOFile(filepath, "rb");
+}
+
+Loader::ResultStatus NCCHContainer::OpenFile(const std::string& filepath) {
+ this->filepath = filepath;
+ file = FileUtil::IOFile(filepath, "rb");
+
+ if (!file.IsOpen()) {
+ LOG_WARNING(Service_FS, "Failed to open %s", filepath.c_str());
+ return Loader::ResultStatus::Error;
+ }
+
+ LOG_DEBUG(Service_FS, "Opened %s", filepath.c_str());
+ return Loader::ResultStatus::Success;
+}
+
+Loader::ResultStatus NCCHContainer::Load() {
+ if (is_loaded)
+ return Loader::ResultStatus::Success;
+
+ // Reset read pointer in case this file has been read before.
+ file.Seek(0, SEEK_SET);
+
+ if (file.ReadBytes(&ncch_header, sizeof(NCCH_Header)) != sizeof(NCCH_Header))
+ return Loader::ResultStatus::Error;
+
+ // Skip NCSD header and load first NCCH (NCSD is just a container of NCCH files)...
+ if (Loader::MakeMagic('N', 'C', 'S', 'D') == ncch_header.magic) {
+ LOG_DEBUG(Service_FS, "Only loading the first (bootable) NCCH within the NCSD file!");
+ ncch_offset = 0x4000;
+ file.Seek(ncch_offset, SEEK_SET);
+ file.ReadBytes(&ncch_header, sizeof(NCCH_Header));
+ }
+
+ // Verify we are loading the correct file type...
+ if (Loader::MakeMagic('N', 'C', 'C', 'H') != ncch_header.magic)
+ return Loader::ResultStatus::ErrorInvalidFormat;
+
+ // System archives and DLC don't have an extended header but have RomFS
+ if (ncch_header.extended_header_size) {
+ if (file.ReadBytes(&exheader_header, sizeof(ExHeader_Header)) != sizeof(ExHeader_Header))
+ return Loader::ResultStatus::Error;
+
+ is_compressed = (exheader_header.codeset_info.flags.flag & 1) == 1;
+ u32 entry_point = exheader_header.codeset_info.text.address;
+ u32 code_size = exheader_header.codeset_info.text.code_size;
+ u32 stack_size = exheader_header.codeset_info.stack_size;
+ u32 bss_size = exheader_header.codeset_info.bss_size;
+ u32 core_version = exheader_header.arm11_system_local_caps.core_version;
+ u8 priority = exheader_header.arm11_system_local_caps.priority;
+ u8 resource_limit_category =
+ exheader_header.arm11_system_local_caps.resource_limit_category;
+
+ LOG_DEBUG(Service_FS, "Name: %s", exheader_header.codeset_info.name);
+ LOG_DEBUG(Service_FS, "Program ID: %016" PRIX64, ncch_header.program_id);
+ LOG_DEBUG(Service_FS, "Code compressed: %s", is_compressed ? "yes" : "no");
+ LOG_DEBUG(Service_FS, "Entry point: 0x%08X", entry_point);
+ LOG_DEBUG(Service_FS, "Code size: 0x%08X", code_size);
+ LOG_DEBUG(Service_FS, "Stack size: 0x%08X", stack_size);
+ LOG_DEBUG(Service_FS, "Bss size: 0x%08X", bss_size);
+ LOG_DEBUG(Service_FS, "Core version: %d", core_version);
+ LOG_DEBUG(Service_FS, "Thread priority: 0x%X", priority);
+ LOG_DEBUG(Service_FS, "Resource limit category: %d", resource_limit_category);
+ LOG_DEBUG(Service_FS, "System Mode: %d",
+ static_cast<int>(exheader_header.arm11_system_local_caps.system_mode));
+
+ if (exheader_header.system_info.jump_id != ncch_header.program_id) {
+ LOG_ERROR(Service_FS, "ExHeader Program ID mismatch: the ROM is probably encrypted.");
+ return Loader::ResultStatus::ErrorEncrypted;
+ }
+
+ has_exheader = true;
+ }
+
+ // DLC can have an ExeFS and a RomFS but no extended header
+ if (ncch_header.exefs_size) {
+ exefs_offset = ncch_header.exefs_offset * kBlockSize;
+ u32 exefs_size = ncch_header.exefs_size * kBlockSize;
+
+ LOG_DEBUG(Service_FS, "ExeFS offset: 0x%08X", exefs_offset);
+ LOG_DEBUG(Service_FS, "ExeFS size: 0x%08X", exefs_size);
+
+ file.Seek(exefs_offset + ncch_offset, SEEK_SET);
+ if (file.ReadBytes(&exefs_header, sizeof(ExeFs_Header)) != sizeof(ExeFs_Header))
+ return Loader::ResultStatus::Error;
+
+ has_exefs = true;
+ }
+
+ if (ncch_header.romfs_offset != 0 && ncch_header.romfs_size != 0)
+ has_romfs = true;
+
+ is_loaded = true;
+ return Loader::ResultStatus::Success;
+}
+
+Loader::ResultStatus NCCHContainer::LoadSectionExeFS(const char* name, std::vector<u8>& buffer) {
+ if (!file.IsOpen())
+ return Loader::ResultStatus::Error;
+
+ Loader::ResultStatus result = Load();
+ if (result != Loader::ResultStatus::Success)
+ return result;
+
+ if (!has_exefs)
+ return Loader::ResultStatus::ErrorNotUsed;
+
+ LOG_DEBUG(Service_FS, "%d sections:", kMaxSections);
+ // Iterate through the ExeFs archive until we find a section with the specified name...
+ for (unsigned section_number = 0; section_number < kMaxSections; section_number++) {
+ const auto& section = exefs_header.section[section_number];
+
+ // Load the specified section...
+ if (strcmp(section.name, name) == 0) {
+ LOG_DEBUG(Service_FS, "%d - offset: 0x%08X, size: 0x%08X, name: %s", section_number,
+ section.offset, section.size, section.name);
+
+ s64 section_offset =
+ (section.offset + exefs_offset + sizeof(ExeFs_Header) + ncch_offset);
+ file.Seek(section_offset, SEEK_SET);
+
+ if (strcmp(section.name, ".code") == 0 && is_compressed) {
+ // Section is compressed, read compressed .code section...
+ std::unique_ptr<u8[]> temp_buffer;
+ try {
+ temp_buffer.reset(new u8[section.size]);
+ } catch (std::bad_alloc&) {
+ return Loader::ResultStatus::ErrorMemoryAllocationFailed;
+ }
+
+ if (file.ReadBytes(&temp_buffer[0], section.size) != section.size)
+ return Loader::ResultStatus::Error;
+
+ // Decompress .code section...
+ u32 decompressed_size = LZSS_GetDecompressedSize(&temp_buffer[0], section.size);
+ buffer.resize(decompressed_size);
+ if (!LZSS_Decompress(&temp_buffer[0], section.size, &buffer[0], decompressed_size))
+ return Loader::ResultStatus::ErrorInvalidFormat;
+ } else {
+ // Section is uncompressed...
+ buffer.resize(section.size);
+ if (file.ReadBytes(&buffer[0], section.size) != section.size)
+ return Loader::ResultStatus::Error;
+ }
+ return Loader::ResultStatus::Success;
+ }
+ }
+ return Loader::ResultStatus::ErrorNotUsed;
+}
+
+Loader::ResultStatus NCCHContainer::ReadRomFS(std::shared_ptr<FileUtil::IOFile>& romfs_file,
+ u64& offset, u64& size) {
+ if (!file.IsOpen())
+ return Loader::ResultStatus::Error;
+
+ Loader::ResultStatus result = Load();
+ if (result != Loader::ResultStatus::Success)
+ return result;
+
+ if (!has_romfs) {
+ LOG_DEBUG(Service_FS, "RomFS requested from NCCH which has no RomFS");
+ return Loader::ResultStatus::ErrorNotUsed;
+ }
+
+ u32 romfs_offset = ncch_offset + (ncch_header.romfs_offset * kBlockSize) + 0x1000;
+ u32 romfs_size = (ncch_header.romfs_size * kBlockSize) - 0x1000;
+
+ LOG_DEBUG(Service_FS, "RomFS offset: 0x%08X", romfs_offset);
+ LOG_DEBUG(Service_FS, "RomFS size: 0x%08X", romfs_size);
+
+ if (file.GetSize() < romfs_offset + romfs_size)
+ return Loader::ResultStatus::Error;
+
+ // We reopen the file, to allow its position to be independent from file's
+ romfs_file = std::make_shared<FileUtil::IOFile>(filepath, "rb");
+ if (!romfs_file->IsOpen())
+ return Loader::ResultStatus::Error;
+
+ offset = romfs_offset;
+ size = romfs_size;
+
+ return Loader::ResultStatus::Success;
+}
+
+Loader::ResultStatus NCCHContainer::ReadProgramId(u64_le& program_id) {
+ Loader::ResultStatus result = Load();
+ if (result != Loader::ResultStatus::Success)
+ return result;
+
+ program_id = ncch_header.program_id;
+ return Loader::ResultStatus::Success;
+}
+
+bool NCCHContainer::HasExeFS() {
+ Loader::ResultStatus result = Load();
+ if (result != Loader::ResultStatus::Success)
+ return false;
+
+ return has_exefs;
+}
+
+bool NCCHContainer::HasRomFS() {
+ Loader::ResultStatus result = Load();
+ if (result != Loader::ResultStatus::Success)
+ return false;
+
+ return has_romfs;
+}
+
+bool NCCHContainer::HasExHeader() {
+ Loader::ResultStatus result = Load();
+ if (result != Loader::ResultStatus::Success)
+ return false;
+
+ return has_exheader;
+}
+
+} // namespace FileSys
diff --git a/src/core/file_sys/ncch_container.h b/src/core/file_sys/ncch_container.h
new file mode 100644
index 000000000..8af9032b4
--- /dev/null
+++ b/src/core/file_sys/ncch_container.h
@@ -0,0 +1,244 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <cstddef>
+#include <memory>
+#include <string>
+#include <vector>
+#include "common/bit_field.h"
+#include "common/common_types.h"
+#include "common/file_util.h"
+#include "common/swap.h"
+#include "core/core.h"
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+/// NCCH header (Note: "NCCH" appears to be a publicly unknown acronym)
+
+struct NCCH_Header {
+ u8 signature[0x100];
+ u32_le magic;
+ u32_le content_size;
+ u8 partition_id[8];
+ u16_le maker_code;
+ u16_le version;
+ u8 reserved_0[4];
+ u64_le program_id;
+ u8 reserved_1[0x10];
+ u8 logo_region_hash[0x20];
+ u8 product_code[0x10];
+ u8 extended_header_hash[0x20];
+ u32_le extended_header_size;
+ u8 reserved_2[4];
+ u8 flags[8];
+ u32_le plain_region_offset;
+ u32_le plain_region_size;
+ u32_le logo_region_offset;
+ u32_le logo_region_size;
+ u32_le exefs_offset;
+ u32_le exefs_size;
+ u32_le exefs_hash_region_size;
+ u8 reserved_3[4];
+ u32_le romfs_offset;
+ u32_le romfs_size;
+ u32_le romfs_hash_region_size;
+ u8 reserved_4[4];
+ u8 exefs_super_block_hash[0x20];
+ u8 romfs_super_block_hash[0x20];
+};
+
+static_assert(sizeof(NCCH_Header) == 0x200, "NCCH header structure size is wrong");
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// ExeFS (executable file system) headers
+
+struct ExeFs_SectionHeader {
+ char name[8];
+ u32 offset;
+ u32 size;
+};
+
+struct ExeFs_Header {
+ ExeFs_SectionHeader section[8];
+ u8 reserved[0x80];
+ u8 hashes[8][0x20];
+};
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// ExHeader (executable file system header) headers
+
+struct ExHeader_SystemInfoFlags {
+ u8 reserved[5];
+ u8 flag;
+ u8 remaster_version[2];
+};
+
+struct ExHeader_CodeSegmentInfo {
+ u32 address;
+ u32 num_max_pages;
+ u32 code_size;
+};
+
+struct ExHeader_CodeSetInfo {
+ u8 name[8];
+ ExHeader_SystemInfoFlags flags;
+ ExHeader_CodeSegmentInfo text;
+ u32 stack_size;
+ ExHeader_CodeSegmentInfo ro;
+ u8 reserved[4];
+ ExHeader_CodeSegmentInfo data;
+ u32 bss_size;
+};
+
+struct ExHeader_DependencyList {
+ u8 program_id[0x30][8];
+};
+
+struct ExHeader_SystemInfo {
+ u64 save_data_size;
+ u64_le jump_id;
+ u8 reserved_2[0x30];
+};
+
+struct ExHeader_StorageInfo {
+ u8 ext_save_data_id[8];
+ u8 system_save_data_id[8];
+ u8 reserved[8];
+ u8 access_info[7];
+ u8 other_attributes;
+};
+
+struct ExHeader_ARM11_SystemLocalCaps {
+ u64_le program_id;
+ u32_le core_version;
+ u8 reserved_flags[2];
+ union {
+ u8 flags0;
+ BitField<0, 2, u8> ideal_processor;
+ BitField<2, 2, u8> affinity_mask;
+ BitField<4, 4, u8> system_mode;
+ };
+ u8 priority;
+ u8 resource_limit_descriptor[0x10][2];
+ ExHeader_StorageInfo storage_info;
+ u8 service_access_control[0x20][8];
+ u8 ex_service_access_control[0x2][8];
+ u8 reserved[0xf];
+ u8 resource_limit_category;
+};
+
+struct ExHeader_ARM11_KernelCaps {
+ u32_le descriptors[28];
+ u8 reserved[0x10];
+};
+
+struct ExHeader_ARM9_AccessControl {
+ u8 descriptors[15];
+ u8 descversion;
+};
+
+struct ExHeader_Header {
+ ExHeader_CodeSetInfo codeset_info;
+ ExHeader_DependencyList dependency_list;
+ ExHeader_SystemInfo system_info;
+ ExHeader_ARM11_SystemLocalCaps arm11_system_local_caps;
+ ExHeader_ARM11_KernelCaps arm11_kernel_caps;
+ ExHeader_ARM9_AccessControl arm9_access_control;
+ struct {
+ u8 signature[0x100];
+ u8 ncch_public_key_modulus[0x100];
+ ExHeader_ARM11_SystemLocalCaps arm11_system_local_caps;
+ ExHeader_ARM11_KernelCaps arm11_kernel_caps;
+ ExHeader_ARM9_AccessControl arm9_access_control;
+ } access_desc;
+};
+
+static_assert(sizeof(ExHeader_Header) == 0x800, "ExHeader structure size is wrong");
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// FileSys namespace
+
+namespace FileSys {
+
+/**
+ * Helper which implements an interface to deal with NCCH containers which can
+ * contain ExeFS archives or RomFS archives for games or other applications.
+ */
+class NCCHContainer {
+public:
+ NCCHContainer(const std::string& filepath);
+ NCCHContainer() {}
+
+ Loader::ResultStatus OpenFile(const std::string& filepath);
+
+ /**
+ * Ensure ExeFS and exheader is loaded and ready for reading sections
+ * @return ResultStatus result of function
+ */
+ Loader::ResultStatus Load();
+
+ /**
+ * Reads an application ExeFS section of an NCCH file (e.g. .code, .logo, etc.)
+ * @param name Name of section to read out of NCCH file
+ * @param buffer Vector to read data into
+ * @return ResultStatus result of function
+ */
+ Loader::ResultStatus LoadSectionExeFS(const char* name, std::vector<u8>& buffer);
+
+ /**
+ * Get the RomFS of the NCCH container
+ * Since the RomFS can be huge, we return a file reference instead of copying to a buffer
+ * @param romfs_file The file containing the RomFS
+ * @param offset The offset the romfs begins on
+ * @param size The size of the romfs
+ * @return ResultStatus result of function
+ */
+ Loader::ResultStatus ReadRomFS(std::shared_ptr<FileUtil::IOFile>& romfs_file, u64& offset,
+ u64& size);
+
+ /**
+ * Get the Program ID of the NCCH container
+ * @return ResultStatus result of function
+ */
+ Loader::ResultStatus ReadProgramId(u64_le& program_id);
+
+ /**
+ * Checks whether the NCCH container contains an ExeFS
+ * @return bool check result
+ */
+ bool HasExeFS();
+
+ /**
+ * Checks whether the NCCH container contains a RomFS
+ * @return bool check result
+ */
+ bool HasRomFS();
+
+ /**
+ * Checks whether the NCCH container contains an ExHeader
+ * @return bool check result
+ */
+ bool HasExHeader();
+
+ NCCH_Header ncch_header;
+ ExeFs_Header exefs_header;
+ ExHeader_Header exheader_header;
+
+private:
+ bool has_exheader = false;
+ bool has_exefs = false;
+ bool has_romfs = false;
+
+ bool is_loaded = false;
+ bool is_compressed = false;
+
+ u32 ncch_offset = 0; // Offset to NCCH header, can be 0 or after NCSD header
+ u32 exefs_offset = 0;
+
+ std::string filepath;
+ FileUtil::IOFile file;
+};
+
+} // namespace FileSys
diff --git a/src/core/loader/loader.h b/src/core/loader/loader.h
index e731888a2..3160fd2fd 100644
--- a/src/core/loader/loader.h
+++ b/src/core/loader/loader.h
@@ -166,6 +166,19 @@ public:
return ResultStatus::ErrorNotImplemented;
}
+ /**
+ * Get the update RomFS of the application
+ * Since the RomFS can be huge, we return a file reference instead of copying to a buffer
+ * @param romfs_file The file containing the RomFS
+ * @param offset The offset the romfs begins on
+ * @param size The size of the romfs
+ * @return ResultStatus result of function
+ */
+ virtual ResultStatus ReadUpdateRomFS(std::shared_ptr<FileUtil::IOFile>& romfs_file, u64& offset,
+ u64& size) {
+ return ResultStatus::ErrorNotImplemented;
+ }
+
/**
* Get the title of the application
* @param title Reference to store the application title into
diff --git a/src/core/loader/ncch.cpp b/src/core/loader/ncch.cpp
index 79ea50147..bef7fa567 100644
--- a/src/core/loader/ncch.cpp
+++ b/src/core/loader/ncch.cpp
@@ -13,6 +13,7 @@
#include "common/swap.h"
#include "core/core.h"
#include "core/file_sys/archive_selfncch.h"
+#include "core/file_sys/ncch_container.h"
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/resource_limit.h"
#include "core/hle/service/cfg/cfg.h"
@@ -27,87 +28,7 @@
namespace Loader {
-static const int kMaxSections = 8; ///< Maximum number of sections (files) in an ExeFs
-static const int kBlockSize = 0x200; ///< Size of ExeFS blocks (in bytes)
-
-/**
- * Get the decompressed size of an LZSS compressed ExeFS file
- * @param buffer Buffer of compressed file
- * @param size Size of compressed buffer
- * @return Size of decompressed buffer
- */
-static u32 LZSS_GetDecompressedSize(const u8* buffer, u32 size) {
- u32 offset_size = *(u32*)(buffer + size - 4);
- return offset_size + size;
-}
-
-/**
- * Decompress ExeFS file (compressed with LZSS)
- * @param compressed Compressed buffer
- * @param compressed_size Size of compressed buffer
- * @param decompressed Decompressed buffer
- * @param decompressed_size Size of decompressed buffer
- * @return True on success, otherwise false
- */
-static bool LZSS_Decompress(const u8* compressed, u32 compressed_size, u8* decompressed,
- u32 decompressed_size) {
- const u8* footer = compressed + compressed_size - 8;
- u32 buffer_top_and_bottom = *reinterpret_cast<const u32*>(footer);
- u32 out = decompressed_size;
- u32 index = compressed_size - ((buffer_top_and_bottom >> 24) & 0xFF);
- u32 stop_index = compressed_size - (buffer_top_and_bottom & 0xFFFFFF);
-
- memset(decompressed, 0, decompressed_size);
- memcpy(decompressed, compressed, compressed_size);
-
- while (index > stop_index) {
- u8 control = compressed[--index];
-
- for (unsigned i = 0; i < 8; i++) {
- if (index <= stop_index)
- break;
- if (index <= 0)
- break;
- if (out <= 0)
- break;
-
- if (control & 0x80) {
- // Check if compression is out of bounds
- if (index < 2)
- return false;
- index -= 2;
-
- u32 segment_offset = compressed[index] | (compressed[index + 1] << 8);
- u32 segment_size = ((segment_offset >> 12) & 15) + 3;
- segment_offset &= 0x0FFF;
- segment_offset += 2;
-
- // Check if compression is out of bounds
- if (out < segment_size)
- return false;
-
- for (unsigned j = 0; j < segment_size; j++) {
- // Check if compression is out of bounds
- if (out + segment_offset >= decompressed_size)
- return false;
-
- u8 data = decompressed[out + segment_offset];
- decompressed[--out] = data;
- }
- } else {
- // Check if compression is out of bounds
- if (out < 1)
- return false;
- decompressed[--out] = compressed[--index];
- }
- control <<= 1;
- }
- }
- return true;
-}
-
-////////////////////////////////////////////////////////////////////////////////////////////////////
-// AppLoader_NCCH class
+static const u64 UPDATE_MASK = 0x0000000e00000000;
FileType AppLoader_NCCH::IdentifyType(FileUtil::IOFile& file) {
u32 magic;
@@ -124,15 +45,25 @@ FileType AppLoader_NCCH::IdentifyType(FileUtil::IOFile& file) {
return FileType::Error;
}
+static std::string GetUpdateNCCHPath(u64_le program_id) {
+ u32 high = static_cast<u32>((program_id | UPDATE_MASK) >> 32);
+ u32 low = static_cast<u32>((program_id | UPDATE_MASK) & 0xFFFFFFFF);
+
+ return Common::StringFromFormat("%sNintendo 3DS/%s/%s/title/%08x/%08x/content/00000000.app",
+ FileUtil::GetUserPath(D_SDMC_IDX).c_str(), SYSTEM_ID, SDCARD_ID,
+ high, low);
+}
+
std::pair<boost::optional<u32>, ResultStatus> AppLoader_NCCH::LoadKernelSystemMode() {
if (!is_loaded) {
- ResultStatus res = LoadExeFS();
+ ResultStatus res = base_ncch.Load();
if (res != ResultStatus::Success) {
return std::make_pair(boost::none, res);
}
}
+
// Set the system mode as the one from the exheader.
- return std::make_pair(exheader_header.arm11_system_local_caps.system_mode.Value(),
+ return std::make_pair(overlay_ncch->exheader_header.arm11_system_local_caps.system_mode.Value(),
ResultStatus::Success);
}
@@ -144,29 +75,34 @@ ResultStatus AppLoader_NCCH::LoadExec() {
return ResultStatus::ErrorNotLoaded;
std::vector<u8> code;
- if (ResultStatus::Success == ReadCode(code)) {
+ u64_le program_id;
+ if (ResultStatus::Success == ReadCode(code) &&
+ ResultStatus::Success == ReadProgramId(program_id)) {
std::string process_name = Common::StringFromFixedZeroTerminatedBuffer(
- (const char*)exheader_header.codeset_info.name, 8);
+ (const char*)overlay_ncch->exheader_header.codeset_info.name, 8);
- SharedPtr<CodeSet> codeset = CodeSet::Create(process_name, ncch_header.program_id);
+ SharedPtr<CodeSet> codeset = CodeSet::Create(process_name, program_id);
codeset->code.offset = 0;
- codeset->code.addr = exheader_header.codeset_info.text.address;
- codeset->code.size = exheader_header.codeset_info.text.num_max_pages * Memory::PAGE_SIZE;
+ codeset->code.addr = overlay_ncch->exheader_header.codeset_info.text.address;
+ codeset->code.size =
+ overlay_ncch->exheader_header.codeset_info.text.num_max_pages * Memory::PAGE_SIZE;
codeset->rodata.offset = codeset->code.offset + codeset->code.size;
- codeset->rodata.addr = exheader_header.codeset_info.ro.address;
- codeset->rodata.size = exheader_header.codeset_info.ro.num_max_pages * Memory::PAGE_SIZE;
+ codeset->rodata.addr = overlay_ncch->exheader_header.codeset_info.ro.address;
+ codeset->rodata.size =
+ overlay_ncch->exheader_header.codeset_info.ro.num_max_pages * Memory::PAGE_SIZE;
// TODO(yuriks): Not sure if the bss size is added to the page-aligned .data size or just
// to the regular size. Playing it safe for now.
- u32 bss_page_size = (exheader_header.codeset_info.bss_size + 0xFFF) & ~0xFFF;
+ u32 bss_page_size = (overlay_ncch->exheader_header.codeset_info.bss_size + 0xFFF) & ~0xFFF;
code.resize(code.size() + bss_page_size, 0);
codeset->data.offset = codeset->rodata.offset + codeset->rodata.size;
- codeset->data.addr = exheader_header.codeset_info.data.address;
+ codeset->data.addr = overlay_ncch->exheader_header.codeset_info.data.address;
codeset->data.size =
- exheader_header.codeset_info.data.num_max_pages * Memory::PAGE_SIZE + bss_page_size;
+ overlay_ncch->exheader_header.codeset_info.data.num_max_pages * Memory::PAGE_SIZE +
+ bss_page_size;
codeset->entrypoint = codeset->code.addr;
codeset->memory = std::make_shared<std::vector<u8>>(std::move(code));
@@ -177,150 +113,27 @@ ResultStatus AppLoader_NCCH::LoadExec() {
// Attach a resource limit to the process based on the resource limit category
Kernel::g_current_process->resource_limit =
Kernel::ResourceLimit::GetForCategory(static_cast<Kernel::ResourceLimitCategory>(
- exheader_header.arm11_system_local_caps.resource_limit_category));
+ overlay_ncch->exheader_header.arm11_system_local_caps.resource_limit_category));
// Set the default CPU core for this process
Kernel::g_current_process->ideal_processor =
- exheader_header.arm11_system_local_caps.ideal_processor;
+ overlay_ncch->exheader_header.arm11_system_local_caps.ideal_processor;
// Copy data while converting endianness
- std::array<u32, ARRAY_SIZE(exheader_header.arm11_kernel_caps.descriptors)> kernel_caps;
- std::copy_n(exheader_header.arm11_kernel_caps.descriptors, kernel_caps.size(),
+ std::array<u32, ARRAY_SIZE(overlay_ncch->exheader_header.arm11_kernel_caps.descriptors)>
+ kernel_caps;
+ std::copy_n(overlay_ncch->exheader_header.arm11_kernel_caps.descriptors, kernel_caps.size(),
begin(kernel_caps));
Kernel::g_current_process->ParseKernelCaps(kernel_caps.data(), kernel_caps.size());
- s32 priority = exheader_header.arm11_system_local_caps.priority;
- u32 stack_size = exheader_header.codeset_info.stack_size;
+ s32 priority = overlay_ncch->exheader_header.arm11_system_local_caps.priority;
+ u32 stack_size = overlay_ncch->exheader_header.codeset_info.stack_size;
Kernel::g_current_process->Run(priority, stack_size);
return ResultStatus::Success;
}
return ResultStatus::Error;
}
-ResultStatus AppLoader_NCCH::LoadSectionExeFS(const char* name, std::vector<u8>& buffer) {
- if (!file.IsOpen())
- return ResultStatus::Error;
-
- ResultStatus result = LoadExeFS();
- if (result != ResultStatus::Success)
- return result;
-
- LOG_DEBUG(Loader, "%d sections:", kMaxSections);
- // Iterate through the ExeFs archive until we find a section with the specified name...
- for (unsigned section_number = 0; section_number < kMaxSections; section_number++) {
- const auto& section = exefs_header.section[section_number];
-
- // Load the specified section...
- if (strcmp(section.name, name) == 0) {
- LOG_DEBUG(Loader, "%d - offset: 0x%08X, size: 0x%08X, name: %s", section_number,
- section.offset, section.size, section.name);
-
- s64 section_offset =
- (section.offset + exefs_offset + sizeof(ExeFs_Header) + ncch_offset);
- file.Seek(section_offset, SEEK_SET);
-
- if (strcmp(section.name, ".code") == 0 && is_compressed) {
- // Section is compressed, read compressed .code section...
- std::unique_ptr<u8[]> temp_buffer;
- try {
- temp_buffer.reset(new u8[section.size]);
- } catch (std::bad_alloc&) {
- return ResultStatus::ErrorMemoryAllocationFailed;
- }
-
- if (file.ReadBytes(&temp_buffer[0], section.size) != section.size)
- return ResultStatus::Error;
-
- // Decompress .code section...
- u32 decompressed_size = LZSS_GetDecompressedSize(&temp_buffer[0], section.size);
- buffer.resize(decompressed_size);
- if (!LZSS_Decompress(&temp_buffer[0], section.size, &buffer[0], decompressed_size))
- return ResultStatus::ErrorInvalidFormat;
- } else {
- // Section is uncompressed...
- buffer.resize(section.size);
- if (file.ReadBytes(&buffer[0], section.size) != section.size)
- return ResultStatus::Error;
- }
- return ResultStatus::Success;
- }
- }
- return ResultStatus::ErrorNotUsed;
-}
-
-ResultStatus AppLoader_NCCH::LoadExeFS() {
- if (is_exefs_loaded)
- return ResultStatus::Success;
-
- if (!file.IsOpen())
- return ResultStatus::Error;
-
- // Reset read pointer in case this file has been read before.
- file.Seek(0, SEEK_SET);
-
- if (file.ReadBytes(&ncch_header, sizeof(NCCH_Header)) != sizeof(NCCH_Header))
- return ResultStatus::Error;
-
- // Skip NCSD header and load first NCCH (NCSD is just a container of NCCH files)...
- if (MakeMagic('N', 'C', 'S', 'D') == ncch_header.magic) {
- LOG_DEBUG(Loader, "Only loading the first (bootable) NCCH within the NCSD file!");
- ncch_offset = 0x4000;
- file.Seek(ncch_offset, SEEK_SET);
- file.ReadBytes(&ncch_header, sizeof(NCCH_Header));
- }
-
- // Verify we are loading the correct file type...
- if (MakeMagic('N', 'C', 'C', 'H') != ncch_header.magic)
- return ResultStatus::ErrorInvalidFormat;
-
- // Read ExHeader...
-
- if (file.ReadBytes(&exheader_header, sizeof(ExHeader_Header)) != sizeof(ExHeader_Header))
- return ResultStatus::Error;
-
- is_compressed = (exheader_header.codeset_info.flags.flag & 1) == 1;
- entry_point = exheader_header.codeset_info.text.address;
- code_size = exheader_header.codeset_info.text.code_size;
- stack_size = exheader_header.codeset_info.stack_size;
- bss_size = exheader_header.codeset_info.bss_size;
- core_version = exheader_header.arm11_system_local_caps.core_version;
- priority = exheader_header.arm11_system_local_caps.priority;
- resource_limit_category = exheader_header.arm11_system_local_caps.resource_limit_category;
-
- LOG_DEBUG(Loader, "Name: %s", exheader_header.codeset_info.name);
- LOG_DEBUG(Loader, "Program ID: %016" PRIX64, ncch_header.program_id);
- LOG_DEBUG(Loader, "Code compressed: %s", is_compressed ? "yes" : "no");
- LOG_DEBUG(Loader, "Entry point: 0x%08X", entry_point);
- LOG_DEBUG(Loader, "Code size: 0x%08X", code_size);
- LOG_DEBUG(Loader, "Stack size: 0x%08X", stack_size);
- LOG_DEBUG(Loader, "Bss size: 0x%08X", bss_size);
- LOG_DEBUG(Loader, "Core version: %d", core_version);
- LOG_DEBUG(Loader, "Thread priority: 0x%X", priority);
- LOG_DEBUG(Loader, "Resource limit category: %d", resource_limit_category);
- LOG_DEBUG(Loader, "System Mode: %d",
- static_cast<int>(exheader_header.arm11_system_local_caps.system_mode));
-
- if (exheader_header.arm11_system_local_caps.program_id != ncch_header.program_id) {
- LOG_ERROR(Loader, "ExHeader Program ID mismatch: the ROM is probably encrypted.");
- return ResultStatus::ErrorEncrypted;
- }
-
- // Read ExeFS...
-
- exefs_offset = ncch_header.exefs_offset * kBlockSize;
- u32 exefs_size = ncch_header.exefs_size * kBlockSize;
-
- LOG_DEBUG(Loader, "ExeFS offset: 0x%08X", exefs_offset);
- LOG_DEBUG(Loader, "ExeFS size: 0x%08X", exefs_size);
-
- file.Seek(exefs_offset + ncch_offset, SEEK_SET);
- if (file.ReadBytes(&exefs_header, sizeof(ExeFs_Header)) != sizeof(ExeFs_Header))
- return ResultStatus::Error;
-
- is_exefs_loaded = true;
- return ResultStatus::Success;
-}
-
void AppLoader_NCCH::ParseRegionLockoutInfo() {
std::vector<u8> smdh_buffer;
if (ReadIcon(smdh_buffer) == ResultStatus::Success && smdh_buffer.size() >= sizeof(SMDH)) {
@@ -339,23 +152,32 @@ void AppLoader_NCCH::ParseRegionLockoutInfo() {
}
ResultStatus AppLoader_NCCH::Load() {
+ u64_le ncch_program_id;
+
if (is_loaded)
return ResultStatus::ErrorAlreadyLoaded;
- ResultStatus result = LoadExeFS();
+ ResultStatus result = base_ncch.Load();
if (result != ResultStatus::Success)
return result;
- std::string program_id{Common::StringFromFormat("%016" PRIX64, ncch_header.program_id)};
+ ReadProgramId(ncch_program_id);
+ std::string program_id{Common::StringFromFormat("%016" PRIX64, ncch_program_id)};
LOG_INFO(Loader, "Program ID: %s", program_id.c_str());
+ update_ncch.OpenFile(GetUpdateNCCHPath(ncch_program_id));
+ result = update_ncch.Load();
+ if (result == ResultStatus::Success) {
+ overlay_ncch = &update_ncch;
+ }
+
Core::Telemetry().AddField(Telemetry::FieldType::Session, "ProgramId", program_id);
if (auto room_member = Network::GetRoomMember().lock()) {
Network::GameInfo game_info;
ReadTitle(game_info.name);
- game_info.id = ncch_header.program_id;
+ game_info.id = ncch_program_id;
room_member->SendGameInfo(game_info);
}
@@ -374,61 +196,40 @@ ResultStatus AppLoader_NCCH::Load() {
}
ResultStatus AppLoader_NCCH::ReadCode(std::vector<u8>& buffer) {
- return LoadSectionExeFS(".code", buffer);
+ return overlay_ncch->LoadSectionExeFS(".code", buffer);
}
ResultStatus AppLoader_NCCH::ReadIcon(std::vector<u8>& buffer) {
- return LoadSectionExeFS("icon", buffer);
+ return overlay_ncch->LoadSectionExeFS("icon", buffer);
}
ResultStatus AppLoader_NCCH::ReadBanner(std::vector<u8>& buffer) {
- return LoadSectionExeFS("banner", buffer);
+ return overlay_ncch->LoadSectionExeFS("banner", buffer);
}
ResultStatus AppLoader_NCCH::ReadLogo(std::vector<u8>& buffer) {
- return LoadSectionExeFS("logo", buffer);
+ return overlay_ncch->LoadSectionExeFS("logo", buffer);
}
ResultStatus AppLoader_NCCH::ReadProgramId(u64& out_program_id) {
- if (!file.IsOpen())
- return ResultStatus::Error;
-
- ResultStatus result = LoadExeFS();
+ ResultStatus result = base_ncch.ReadProgramId(out_program_id);
if (result != ResultStatus::Success)
return result;
- out_program_id = ncch_header.program_id;
return ResultStatus::Success;
}
ResultStatus AppLoader_NCCH::ReadRomFS(std::shared_ptr<FileUtil::IOFile>& romfs_file, u64& offset,
u64& size) {
- if (!file.IsOpen())
- return ResultStatus::Error;
+ return base_ncch.ReadRomFS(romfs_file, offset, size);
+}
- // Check if the NCCH has a RomFS...
- if (ncch_header.romfs_offset != 0 && ncch_header.romfs_size != 0) {
- u32 romfs_offset = ncch_offset + (ncch_header.romfs_offset * kBlockSize) + 0x1000;
- u32 romfs_size = (ncch_header.romfs_size * kBlockSize) - 0x1000;
+ResultStatus AppLoader_NCCH::ReadUpdateRomFS(std::shared_ptr<FileUtil::IOFile>& romfs_file,
+ u64& offset, u64& size) {
+ ResultStatus result = update_ncch.ReadRomFS(romfs_file, offset, size);
- LOG_DEBUG(Loader, "RomFS offset: 0x%08X", romfs_offset);
- LOG_DEBUG(Loader, "RomFS size: 0x%08X", romfs_size);
-
- if (file.GetSize() < romfs_offset + romfs_size)
- return ResultStatus::Error;
-
- // We reopen the file, to allow its position to be independent from file's
- romfs_file = std::make_shared<FileUtil::IOFile>(filepath, "rb");
- if (!romfs_file->IsOpen())
- return ResultStatus::Error;
-
- offset = romfs_offset;
- size = romfs_size;
-
- return ResultStatus::Success;
- }
- LOG_DEBUG(Loader, "NCCH has no RomFS");
- return ResultStatus::ErrorNotUsed;
+ if (result != ResultStatus::Success)
+ return base_ncch.ReadRomFS(romfs_file, offset, size);
}
ResultStatus AppLoader_NCCH::ReadTitle(std::string& title) {
diff --git a/src/core/loader/ncch.h b/src/core/loader/ncch.h
index e40cef764..9b56465cb 100644
--- a/src/core/loader/ncch.h
+++ b/src/core/loader/ncch.h
@@ -5,154 +5,11 @@
#pragma once
#include <memory>
-#include "common/bit_field.h"
#include "common/common_types.h"
#include "common/swap.h"
+#include "core/file_sys/ncch_container.h"
#include "core/loader/loader.h"
-////////////////////////////////////////////////////////////////////////////////////////////////////
-/// NCCH header (Note: "NCCH" appears to be a publicly unknown acronym)
-
-struct NCCH_Header {
- u8 signature[0x100];
- u32_le magic;
- u32_le content_size;
- u8 partition_id[8];
- u16_le maker_code;
- u16_le version;
- u8 reserved_0[4];
- u64_le program_id;
- u8 reserved_1[0x10];
- u8 logo_region_hash[0x20];
- u8 product_code[0x10];
- u8 extended_header_hash[0x20];
- u32_le extended_header_size;
- u8 reserved_2[4];
- u8 flags[8];
- u32_le plain_region_offset;
- u32_le plain_region_size;
- u32_le logo_region_offset;
- u32_le logo_region_size;
- u32_le exefs_offset;
- u32_le exefs_size;
- u32_le exefs_hash_region_size;
- u8 reserved_3[4];
- u32_le romfs_offset;
- u32_le romfs_size;
- u32_le romfs_hash_region_size;
- u8 reserved_4[4];
- u8 exefs_super_block_hash[0x20];
- u8 romfs_super_block_hash[0x20];
-};
-
-static_assert(sizeof(NCCH_Header) == 0x200, "NCCH header structure size is wrong");
-
-////////////////////////////////////////////////////////////////////////////////////////////////////
-// ExeFS (executable file system) headers
-
-struct ExeFs_SectionHeader {
- char name[8];
- u32 offset;
- u32 size;
-};
-
-struct ExeFs_Header {
- ExeFs_SectionHeader section[8];
- u8 reserved[0x80];
- u8 hashes[8][0x20];
-};
-
-////////////////////////////////////////////////////////////////////////////////////////////////////
-// ExHeader (executable file system header) headers
-
-struct ExHeader_SystemInfoFlags {
- u8 reserved[5];
- u8 flag;
- u8 remaster_version[2];
-};
-
-struct ExHeader_CodeSegmentInfo {
- u32 address;
- u32 num_max_pages;
- u32 code_size;
-};
-
-struct ExHeader_CodeSetInfo {
- u8 name[8];
- ExHeader_SystemInfoFlags flags;
- ExHeader_CodeSegmentInfo text;
- u32 stack_size;
- ExHeader_CodeSegmentInfo ro;
- u8 reserved[4];
- ExHeader_CodeSegmentInfo data;
- u32 bss_size;
-};
-
-struct ExHeader_DependencyList {
- u8 program_id[0x30][8];
-};
-
-struct ExHeader_SystemInfo {
- u64 save_data_size;
- u8 jump_id[8];
- u8 reserved_2[0x30];
-};
-
-struct ExHeader_StorageInfo {
- u8 ext_save_data_id[8];
- u8 system_save_data_id[8];
- u8 reserved[8];
- u8 access_info[7];
- u8 other_attributes;
-};
-
-struct ExHeader_ARM11_SystemLocalCaps {
- u64_le program_id;
- u32_le core_version;
- u8 reserved_flags[2];
- union {
- u8 flags0;
- BitField<0, 2, u8> ideal_processor;
- BitField<2, 2, u8> affinity_mask;
- BitField<4, 4, u8> system_mode;
- };
- u8 priority;
- u8 resource_limit_descriptor[0x10][2];
- ExHeader_StorageInfo storage_info;
- u8 service_access_control[0x20][8];
- u8 ex_service_access_control[0x2][8];
- u8 reserved[0xf];
- u8 resource_limit_category;
-};
-
-struct ExHeader_ARM11_KernelCaps {
- u32_le descriptors[28];
- u8 reserved[0x10];
-};
-
-struct ExHeader_ARM9_AccessControl {
- u8 descriptors[15];
- u8 descversion;
-};
-
-struct ExHeader_Header {
- ExHeader_CodeSetInfo codeset_info;
- ExHeader_DependencyList dependency_list;
- ExHeader_SystemInfo system_info;
- ExHeader_ARM11_SystemLocalCaps arm11_system_local_caps;
- ExHeader_ARM11_KernelCaps arm11_kernel_caps;
- ExHeader_ARM9_AccessControl arm9_access_control;
- struct {
- u8 signature[0x100];
- u8 ncch_public_key_modulus[0x100];
- ExHeader_ARM11_SystemLocalCaps arm11_system_local_caps;
- ExHeader_ARM11_KernelCaps arm11_kernel_caps;
- ExHeader_ARM9_AccessControl arm9_access_control;
- } access_desc;
-};
-
-static_assert(sizeof(ExHeader_Header) == 0x800, "ExHeader structure size is wrong");
-
////////////////////////////////////////////////////////////////////////////////////////////////////
// Loader namespace
@@ -162,7 +19,8 @@ namespace Loader {
class AppLoader_NCCH final : public AppLoader {
public:
AppLoader_NCCH(FileUtil::IOFile&& file, const std::string& filepath)
- : AppLoader(std::move(file)), filepath(filepath) {}
+ : AppLoader(std::move(file)), filepath(filepath), base_ncch(filepath),
+ overlay_ncch(&base_ncch) {}
/**
* Returns the type of the file
@@ -196,48 +54,24 @@ public:
ResultStatus ReadRomFS(std::shared_ptr<FileUtil::IOFile>& romfs_file, u64& offset,
u64& size) override;
+ ResultStatus ReadUpdateRomFS(std::shared_ptr<FileUtil::IOFile>& romfs_file, u64& offset,
+ u64& size) override;
+
ResultStatus ReadTitle(std::string& title) override;
private:
- /**
- * Reads an application ExeFS section of an NCCH file into AppLoader (e.g. .code, .logo, etc.)
- * @param name Name of section to read out of NCCH file
- * @param buffer Vector to read data into
- * @return ResultStatus result of function
- */
- ResultStatus LoadSectionExeFS(const char* name, std::vector<u8>& buffer);
-
/**
* Loads .code section into memory for booting
* @return ResultStatus result of function
*/
ResultStatus LoadExec();
- /**
- * Ensure ExeFS is loaded and ready for reading sections
- * @return ResultStatus result of function
- */
- ResultStatus LoadExeFS();
-
/// Reads the region lockout info in the SMDH and send it to CFG service
void ParseRegionLockoutInfo();
- bool is_exefs_loaded = false;
- bool is_compressed = false;
-
- u32 entry_point = 0;
- u32 code_size = 0;
- u32 stack_size = 0;
- u32 bss_size = 0;
- u32 core_version = 0;
- u8 priority = 0;
- u8 resource_limit_category = 0;
- u32 ncch_offset = 0; // Offset to NCCH header, can be 0 or after NCSD header
- u32 exefs_offset = 0;
-
- NCCH_Header ncch_header;
- ExeFs_Header exefs_header;
- ExHeader_Header exheader_header;
+ FileSys::NCCHContainer base_ncch;
+ FileSys::NCCHContainer update_ncch;
+ FileSys::NCCHContainer* overlay_ncch;
std::string filepath;
};