apt: load shared font from system archive
This commit is contained in:
wwylele
parent
22994607cc
commit
9549eed0be
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@ -60,6 +60,7 @@ set(SRCS
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hle/kernel/timer.cpp
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hle/kernel/vm_manager.cpp
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hle/kernel/wait_object.cpp
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hle/romfs.cpp
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hle/service/ac/ac.cpp
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hle/service/ac/ac_i.cpp
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hle/service/ac/ac_u.cpp
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@ -257,6 +258,7 @@ set(HEADERS
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hle/kernel/vm_manager.h
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hle/kernel/wait_object.h
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hle/result.h
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hle/romfs.h
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hle/service/ac/ac.h
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hle/service/ac/ac_i.h
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hle/service/ac/ac_u.h
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@ -0,0 +1,102 @@
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// Copyright 2017 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <cstring>
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#include "common/swap.h"
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#include "core/hle/romfs.h"
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namespace RomFS {
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struct Header {
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u32_le header_length;
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u32_le dir_hash_table_offset;
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u32_le dir_hash_table_length;
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u32_le dir_table_offset;
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u32_le dir_table_length;
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u32_le file_hash_table_offset;
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u32_le file_hash_table_length;
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u32_le file_table_offset;
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u32_le file_table_length;
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u32_le data_offset;
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};
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static_assert(sizeof(Header) == 0x28, "Header has incorrect size");
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struct DirectoryMetadata {
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u32_le parent_dir_offset;
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u32_le next_dir_offset;
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u32_le first_child_dir_offset;
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u32_le first_file_offset;
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u32_le same_hash_next_dir_offset;
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u32_le name_length; // in bytes
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// followed by directory name
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};
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static_assert(sizeof(DirectoryMetadata) == 0x18, "DirectoryMetadata has incorrect size");
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struct FileMetadata {
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u32_le parent_dir_offset;
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u32_le next_file_offset;
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u64_le data_offset;
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u64_le data_length;
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u32_le same_hash_next_file_offset;
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u32_le name_length; // in bytes
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// followed by file name
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};
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static_assert(sizeof(FileMetadata) == 0x20, "FileMetadata has incorrect size");
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static bool MatchName(const u8* buffer, u32 name_length, const std::u16string& name) {
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std::vector<char16_t> name_buffer(name_length / sizeof(char16_t));
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std::memcpy(name_buffer.data(), buffer, name_length);
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return name == std::u16string(name_buffer.begin(), name_buffer.end());
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}
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const u8* GetFilePointer(const u8* romfs, const std::vector<std::u16string>& path) {
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constexpr u32 INVALID_FIELD = 0xFFFFFFFF;
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// Split path into directory names and file name
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std::vector<std::u16string> dir_names = path;
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dir_names.pop_back();
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const std::u16string& file_name = path.back();
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Header header;
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std::memcpy(&header, romfs, sizeof(header));
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// Find directories of each level
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DirectoryMetadata dir;
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const u8* current_dir = romfs + header.dir_table_offset;
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std::memcpy(&dir, current_dir, sizeof(dir));
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for (const std::u16string& dir_name : dir_names) {
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u32 child_dir_offset;
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child_dir_offset = dir.first_child_dir_offset;
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while (true) {
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if (child_dir_offset == INVALID_FIELD) {
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return nullptr;
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}
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const u8* current_child_dir = romfs + header.dir_table_offset + child_dir_offset;
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std::memcpy(&dir, current_child_dir, sizeof(dir));
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if (MatchName(current_child_dir + sizeof(dir), dir.name_length, dir_name)) {
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current_dir = current_child_dir;
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break;
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}
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child_dir_offset = dir.next_dir_offset;
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}
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}
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// Find the file
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FileMetadata file;
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u32 file_offset = dir.first_file_offset;
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while (file_offset != INVALID_FIELD) {
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const u8* current_file = romfs + header.file_table_offset + file_offset;
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std::memcpy(&file, current_file, sizeof(file));
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if (MatchName(current_file + sizeof(file), file.name_length, file_name)) {
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return romfs + header.data_offset + file.data_offset;
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}
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file_offset = file.next_file_offset;
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}
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return nullptr;
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}
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} // namespace RomFS
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@ -0,0 +1,22 @@
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// Copyright 2017 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <string>
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#include <vector>
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#include "common/common_types.h"
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namespace RomFS {
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/**
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* Gets the pointer to a file in a RomFS image.
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* @param romfs The pointer to the RomFS image
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* @param path A vector containing the directory names and file name of the path to the file
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* @return the pointer to the file
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* @todo reimplement this with a full RomFS manager
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*/
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const u8* GetFilePointer(const u8* romfs, const std::vector<std::u16string>& path);
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} // namespace RomFS
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@ -6,11 +6,13 @@
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#include "common/file_util.h"
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#include "common/logging/log.h"
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#include "core/core.h"
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#include "core/file_sys/file_backend.h"
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#include "core/hle/applets/applet.h"
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#include "core/hle/kernel/event.h"
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#include "core/hle/kernel/mutex.h"
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#include "core/hle/kernel/process.h"
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#include "core/hle/kernel/shared_memory.h"
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#include "core/hle/romfs.h"
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#include "core/hle/service/apt/apt.h"
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#include "core/hle/service/apt/apt_a.h"
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#include "core/hle/service/apt/apt_s.h"
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@ -27,6 +29,7 @@ namespace APT {
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/// Handle to shared memory region designated to for shared system font
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static Kernel::SharedPtr<Kernel::SharedMemory> shared_font_mem;
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static bool shared_font_loaded = false;
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static bool shared_font_relocated = false;
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static Kernel::SharedPtr<Kernel::Mutex> lock;
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@ -71,7 +74,7 @@ void Initialize(Service::Interface* self) {
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void GetSharedFont(Service::Interface* self) {
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IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x44, 0, 0); // 0x00440000
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IPC::RequestBuilder rb = rp.MakeBuilder(2, 2);
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if (!shared_font_mem) {
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if (!shared_font_loaded) {
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LOG_ERROR(Service_APT, "shared font file missing - go dump it from your 3ds");
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rb.Push<u32>(-1); // TODO: Find the right error code
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rb.Skip(1 + 2, true);
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@ -644,6 +647,125 @@ void CheckNew3DS(Service::Interface* self) {
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LOG_WARNING(Service_APT, "(STUBBED) called");
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}
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static u32 DecompressLZ11(const u8* in, u8* out) {
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u32_le decompressed_size;
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memcpy(&decompressed_size, in, sizeof(u32));
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in += 4;
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u8 type = decompressed_size & 0xFF;
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ASSERT(type == 0x11);
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decompressed_size >>= 8;
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u32 current_out_size = 0;
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u8 flags = 0, mask = 1;
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while (current_out_size < decompressed_size) {
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if (mask == 1) {
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flags = *(in++);
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mask = 0x80;
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} else {
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mask >>= 1;
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}
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if (flags & mask) {
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u8 byte1 = *(in++);
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u32 length = byte1 >> 4;
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u32 offset;
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if (length == 0) {
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u8 byte2 = *(in++);
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u8 byte3 = *(in++);
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length = (((byte1 & 0x0F) << 4) | (byte2 >> 4)) + 0x11;
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offset = (((byte2 & 0x0F) << 8) | byte3) + 0x1;
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} else if (length == 1) {
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u8 byte2 = *(in++);
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u8 byte3 = *(in++);
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u8 byte4 = *(in++);
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length = (((byte1 & 0x0F) << 12) | (byte2 << 4) | (byte3 >> 4)) + 0x111;
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offset = (((byte3 & 0x0F) << 8) | byte4) + 0x1;
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} else {
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u8 byte2 = *(in++);
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length = (byte1 >> 4) + 0x1;
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offset = (((byte1 & 0x0F) << 8) | byte2) + 0x1;
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}
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for (u32 i = 0; i < length; i++) {
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*out = *(out - offset);
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++out;
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}
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current_out_size += length;
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} else {
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*(out++) = *(in++);
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current_out_size++;
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}
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}
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return decompressed_size;
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}
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static bool LoadSharedFont() {
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// TODO (wwylele): load different font archive for region CHN/KOR/TWN
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const u64_le shared_font_archive_id_low = 0x0004009b00014002;
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const u64_le shared_font_archive_id_high = 0x00000001ffffff00;
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std::vector<u8> shared_font_archive_id(16);
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std::memcpy(&shared_font_archive_id[0], &shared_font_archive_id_low, sizeof(u64));
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std::memcpy(&shared_font_archive_id[8], &shared_font_archive_id_high, sizeof(u64));
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FileSys::Path archive_path(shared_font_archive_id);
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auto archive_result = Service::FS::OpenArchive(Service::FS::ArchiveIdCode::NCCH, archive_path);
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if (archive_result.Failed())
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return false;
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std::vector<u8> romfs_path(20, 0); // 20-byte all zero path for opening RomFS
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FileSys::Path file_path(romfs_path);
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FileSys::Mode open_mode = {};
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open_mode.read_flag.Assign(1);
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auto file_result = Service::FS::OpenFileFromArchive(*archive_result, file_path, open_mode);
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if (file_result.Failed())
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return false;
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auto romfs = std::move(file_result).Unwrap();
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std::vector<u8> romfs_buffer(romfs->backend->GetSize());
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romfs->backend->Read(0, romfs_buffer.size(), romfs_buffer.data());
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romfs->backend->Close();
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const u8* font_file = RomFS::GetFilePointer(romfs_buffer.data(), {u"cbf_std.bcfnt.lz"});
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if (font_file == nullptr)
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return false;
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struct {
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u32_le status;
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u32_le region;
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u32_le decompressed_size;
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INSERT_PADDING_WORDS(0x1D);
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} shared_font_header{};
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static_assert(sizeof(shared_font_header) == 0x80, "shared_font_header has incorrect size");
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shared_font_header.status = 2; // successfully loaded
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shared_font_header.region = 1; // region JPN/EUR/USA
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shared_font_header.decompressed_size =
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DecompressLZ11(font_file, shared_font_mem->GetPointer(0x80));
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std::memcpy(shared_font_mem->GetPointer(), &shared_font_header, sizeof(shared_font_header));
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*shared_font_mem->GetPointer(0x83) = 'U'; // Change the magic from "CFNT" to "CFNU"
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return true;
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}
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static bool LoadLegacySharedFont() {
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// This is the legacy method to load shared font.
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// The expected format is a decrypted, uncompressed BCFNT file with the 0x80 byte header
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// generated by the APT:U service. The best way to get is by dumping it from RAM. We've provided
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// a homebrew app to do this: https://github.com/citra-emu/3dsutils. Put the resulting file
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// "shared_font.bin" in the Citra "sysdata" directory.
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std::string filepath = FileUtil::GetUserPath(D_SYSDATA_IDX) + SHARED_FONT;
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FileUtil::CreateFullPath(filepath); // Create path if not already created
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FileUtil::IOFile file(filepath, "rb");
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if (file.IsOpen()) {
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file.ReadBytes(shared_font_mem->GetPointer(), file.GetSize());
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return true;
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}
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return false;
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}
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void Init() {
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AddService(new APT_A_Interface);
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AddService(new APT_S_Interface);
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@ -651,29 +773,20 @@ void Init() {
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HLE::Applets::Init();
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// Load the shared system font (if available).
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// The expected format is a decrypted, uncompressed BCFNT file with the 0x80 byte header
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// generated by the APT:U service. The best way to get is by dumping it from RAM. We've provided
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// a homebrew app to do this: https://github.com/citra-emu/3dsutils. Put the resulting file
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// "shared_font.bin" in the Citra "sysdata" directory.
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std::string filepath = FileUtil::GetUserPath(D_SYSDATA_IDX) + SHARED_FONT;
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FileUtil::CreateFullPath(filepath); // Create path if not already created
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FileUtil::IOFile file(filepath, "rb");
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if (file.IsOpen()) {
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// Create shared font memory object
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using Kernel::MemoryPermission;
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shared_font_mem =
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Kernel::SharedMemory::Create(nullptr, 0x332000, // 3272 KB
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MemoryPermission::ReadWrite, MemoryPermission::Read, 0,
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Kernel::MemoryRegion::SYSTEM, "APT:SharedFont");
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// Read shared font data
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file.ReadBytes(shared_font_mem->GetPointer(), file.GetSize());
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if (LoadSharedFont()) {
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shared_font_loaded = true;
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} else if (LoadLegacySharedFont()) {
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LOG_WARNING(Service_APT, "Loaded shared font by legacy method");
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shared_font_loaded = true;
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} else {
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LOG_WARNING(Service_APT, "Unable to load shared font: %s", filepath.c_str());
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shared_font_mem = nullptr;
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LOG_WARNING(Service_APT, "Unable to load shared font");
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shared_font_loaded = false;
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}
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lock = Kernel::Mutex::Create(false, "APT_U:Lock");
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@ -693,6 +806,7 @@ void Init() {
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void Shutdown() {
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shared_font_mem = nullptr;
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shared_font_loaded = false;
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shared_font_relocated = false;
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lock = nullptr;
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notification_event = nullptr;
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