1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "core/file_sys/archive_extsavedata.h"
#include <algorithm>
#include <memory>
#include <vector>
#include "common/common_types.h"
#include "common/file_util.h"
#include "common/logging/log.h"
#include "common/string_util.h"
#include "core/file_sys/disk_archive.h"
#include "core/hle/service/fs/archive.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// FileSys namespace
namespace FileSys {
std::string GetExtSaveDataPath(const std::string& mount_point, const Path& path) {
std::vector<u8> vec_data = path.AsBinary();
const u32* data = reinterpret_cast<const u32*>(vec_data.data());
u32 save_low = data[1];
u32 save_high = data[2];
return Common::StringFromFormat("%s%08X/%08X/", mount_point.c_str(), save_high, save_low);
}
std::string GetExtDataContainerPath(const std::string& mount_point, bool shared) {
if (shared)
return Common::StringFromFormat("%sdata/%s/extdata/", mount_point.c_str(),
SYSTEM_ID.c_str());
return Common::StringFromFormat("%sNintendo 3DS/%s/%s/extdata/", mount_point.c_str(),
SYSTEM_ID.c_str(), SDCARD_ID.c_str());
}
Path ConstructExtDataBinaryPath(u32 media_type, u32 high, u32 low) {
std::vector<u8> binary_path;
binary_path.reserve(12);
// Append each word byte by byte
// The first word is the media type
for (unsigned i = 0; i < 4; ++i)
binary_path.push_back((media_type >> (8 * i)) & 0xFF);
// Next is the low word
for (unsigned i = 0; i < 4; ++i)
binary_path.push_back((low >> (8 * i)) & 0xFF);
// Next is the high word
for (unsigned i = 0; i < 4; ++i)
binary_path.push_back((high >> (8 * i)) & 0xFF);
return {binary_path};
}
ArchiveFactory_ExtSaveData::ArchiveFactory_ExtSaveData(const std::string& mount_location,
bool shared)
: shared(shared), mount_point(GetExtDataContainerPath(mount_location, shared)) {
LOG_INFO(Service_FS, "Directory %s set as base for ExtSaveData.", mount_point.c_str());
}
bool ArchiveFactory_ExtSaveData::Initialize() {
if (!FileUtil::CreateFullPath(mount_point)) {
LOG_ERROR(Service_FS, "Unable to create ExtSaveData base path.");
return false;
}
return true;
}
ResultVal<std::unique_ptr<ArchiveBackend>> ArchiveFactory_ExtSaveData::Open(const Path& path) {
std::string fullpath = GetExtSaveDataPath(mount_point, path) + "user/";
if (!FileUtil::Exists(fullpath)) {
// TODO(Subv): Verify the archive behavior of SharedExtSaveData compared to ExtSaveData.
// ExtSaveData seems to return FS_NotFound (120) when the archive doesn't exist.
if (!shared) {
return ResultCode(ErrorDescription::FS_NotFound, ErrorModule::FS,
ErrorSummary::InvalidState, ErrorLevel::Status);
} else {
return ResultCode(ErrorDescription::FS_NotFormatted, ErrorModule::FS,
ErrorSummary::InvalidState, ErrorLevel::Status);
}
}
auto archive = std::make_unique<DiskArchive>(fullpath);
return MakeResult<std::unique_ptr<ArchiveBackend>>(std::move(archive));
}
ResultCode ArchiveFactory_ExtSaveData::Format(const Path& path,
const FileSys::ArchiveFormatInfo& format_info) {
// These folders are always created with the ExtSaveData
std::string user_path = GetExtSaveDataPath(mount_point, path) + "user/";
std::string boss_path = GetExtSaveDataPath(mount_point, path) + "boss/";
FileUtil::CreateFullPath(user_path);
FileUtil::CreateFullPath(boss_path);
// Write the format metadata
std::string metadata_path = GetExtSaveDataPath(mount_point, path) + "metadata";
FileUtil::IOFile file(metadata_path, "wb");
if (!file.IsOpen()) {
// TODO(Subv): Find the correct error code
return ResultCode(-1);
}
file.WriteBytes(&format_info, sizeof(format_info));
return RESULT_SUCCESS;
}
ResultVal<ArchiveFormatInfo> ArchiveFactory_ExtSaveData::GetFormatInfo(const Path& path) const {
std::string metadata_path = GetExtSaveDataPath(mount_point, path) + "metadata";
FileUtil::IOFile file(metadata_path, "rb");
if (!file.IsOpen()) {
LOG_ERROR(Service_FS, "Could not open metadata information for archive");
// TODO(Subv): Verify error code
return ResultCode(ErrorDescription::FS_NotFormatted, ErrorModule::FS,
ErrorSummary::InvalidState, ErrorLevel::Status);
}
ArchiveFormatInfo info = {};
file.ReadBytes(&info, sizeof(info));
return MakeResult<ArchiveFormatInfo>(info);
}
void ArchiveFactory_ExtSaveData::WriteIcon(const Path& path, const u8* icon_data,
size_t icon_size) {
std::string game_path = FileSys::GetExtSaveDataPath(GetMountPoint(), path);
FileUtil::IOFile icon_file(game_path + "icon", "wb");
icon_file.WriteBytes(icon_data, icon_size);
}
} // namespace FileSys
|
