dolphin/Source/Core/DiscIO/NANDContentLoader.cpp

610 lines
16 KiB
C++

// Copyright 2009 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include <algorithm>
#include <array>
#include <cstddef>
#include <cstdio>
#include <cstring>
#include <functional>
#include <map>
#include <mbedtls/aes.h>
#include <string>
#include <utility>
#include <vector>
#include "Common/Align.h"
#include "Common/CommonFuncs.h"
#include "Common/CommonTypes.h"
#include "Common/FileUtil.h"
#include "Common/Logging/Log.h"
#include "Common/MsgHandler.h"
#include "Common/NandPaths.h"
#include "Common/StringUtil.h"
#include "DiscIO/Enums.h"
#include "DiscIO/NANDContentLoader.h"
#include "DiscIO/WiiWad.h"
namespace DiscIO
{
namespace
{
// Strips the signature part of a ticket, which has variable size based on
// signature type. Returns a new vector which has only the ticket structure
// itself.
std::vector<u8> SignedTicketToTicket(const std::vector<u8>& signed_ticket)
{
u32 signature_type = Common::swap32(signed_ticket.data());
u32 entry_offset;
if (signature_type == 0x10000) // RSA4096
{
entry_offset = 576;
}
else if (signature_type == 0x10001) // RSA2048
{
entry_offset = 320;
}
else if (signature_type == 0x10002) // ECDSA
{
entry_offset = 128;
}
else
{
ERROR_LOG(DISCIO, "Invalid ticket signature type: %08x", signature_type);
return std::vector<u8>();
}
std::vector<u8> ticket(signed_ticket.size() - entry_offset);
std::copy(signed_ticket.begin() + entry_offset, signed_ticket.end(), ticket.begin());
return ticket;
}
std::vector<u8> AESDecode(const u8* key, u8* iv, const u8* src, u32 size)
{
mbedtls_aes_context aes_ctx;
std::vector<u8> buffer(size);
mbedtls_aes_setkey_dec(&aes_ctx, key, 128);
mbedtls_aes_crypt_cbc(&aes_ctx, MBEDTLS_AES_DECRYPT, size, iv, src, buffer.data());
return buffer;
}
}
CNANDContentData::~CNANDContentData() = default;
CSharedContent::CSharedContent()
{
UpdateLocation();
}
void CSharedContent::UpdateLocation()
{
m_Elements.clear();
m_LastID = 0;
m_ContentMap =
StringFromFormat("%s/shared1/content.map", File::GetUserPath(D_WIIROOT_IDX).c_str());
File::IOFile pFile(m_ContentMap, "rb");
SElement Element;
while (pFile.ReadArray(&Element, 1))
{
m_Elements.push_back(Element);
m_LastID++;
}
}
CSharedContent::~CSharedContent()
{
}
std::string CSharedContent::GetFilenameFromSHA1(const u8* hash)
{
for (auto& Element : m_Elements)
{
if (memcmp(hash, Element.SHA1Hash, 20) == 0)
{
return StringFromFormat(
"%s/shared1/%c%c%c%c%c%c%c%c.app", File::GetUserPath(D_WIIROOT_IDX).c_str(),
Element.FileName[0], Element.FileName[1], Element.FileName[2], Element.FileName[3],
Element.FileName[4], Element.FileName[5], Element.FileName[6], Element.FileName[7]);
}
}
return "unk";
}
std::string CSharedContent::AddSharedContent(const u8* hash)
{
std::string filename = GetFilenameFromSHA1(hash);
if (strcasecmp(filename.c_str(), "unk") == 0)
{
std::string id = StringFromFormat("%08x", m_LastID);
SElement Element;
memcpy(Element.FileName, id.c_str(), 8);
memcpy(Element.SHA1Hash, hash, 20);
m_Elements.push_back(Element);
File::CreateFullPath(m_ContentMap);
File::IOFile pFile(m_ContentMap, "ab");
pFile.WriteArray(&Element, 1);
filename =
StringFromFormat("%s/shared1/%s.app", File::GetUserPath(D_WIIROOT_IDX).c_str(), id.c_str());
m_LastID++;
}
return filename;
}
CNANDContentDataFile::CNANDContentDataFile(const std::string& filename) : m_filename{filename}
{
}
CNANDContentDataFile::~CNANDContentDataFile() = default;
void CNANDContentDataFile::EnsureOpen()
{
if (!m_file)
m_file = std::make_unique<File::IOFile>(m_filename, "rb");
else if (!m_file->IsOpen())
m_file->Open(m_filename, "rb");
}
void CNANDContentDataFile::Open()
{
EnsureOpen();
}
std::vector<u8> CNANDContentDataFile::Get()
{
EnsureOpen();
if (!m_file->IsGood())
return {};
u64 size = m_file->GetSize();
if (size == 0)
return {};
std::vector<u8> result(size);
m_file->ReadBytes(result.data(), result.size());
return result;
}
bool CNANDContentDataFile::GetRange(u32 start, u32 size, u8* buffer)
{
EnsureOpen();
if (!m_file->IsGood())
return false;
if (!m_file->Seek(start, SEEK_SET))
return false;
return m_file->ReadBytes(buffer, static_cast<size_t>(size));
}
void CNANDContentDataFile::Close()
{
if (m_file && m_file->IsOpen())
m_file->Close();
}
bool CNANDContentDataBuffer::GetRange(u32 start, u32 size, u8* buffer)
{
if (start + size > m_buffer.size())
return false;
std::copy(&m_buffer[start], &m_buffer[start + size], buffer);
return true;
}
CNANDContentLoader::CNANDContentLoader(const std::string& content_name)
: m_Valid(false), m_IsWAD(false), m_TitleID(-1), m_IosVersion(0x09), m_BootIndex(-1)
{
m_Valid = Initialize(content_name);
}
CNANDContentLoader::~CNANDContentLoader()
{
}
const SNANDContent* CNANDContentLoader::GetContentByIndex(int index) const
{
for (auto& Content : m_Content)
{
if (Content.m_Index == index)
{
return &Content;
}
}
return nullptr;
}
bool CNANDContentLoader::Initialize(const std::string& name)
{
if (name.empty())
return false;
m_Path = name;
WiiWAD wad(name);
std::vector<u8> data_app;
std::vector<u8> tmd;
std::vector<u8> decrypted_title_key;
if (wad.IsValid())
{
m_IsWAD = true;
m_Ticket = wad.GetTicket();
decrypted_title_key = GetKeyFromTicket(m_Ticket);
tmd = wad.GetTMD();
data_app = wad.GetDataApp();
}
else
{
std::string tmd_filename(m_Path);
if (tmd_filename.back() == '/')
tmd_filename += "title.tmd";
else
m_Path = tmd_filename.substr(0, tmd_filename.find("title.tmd"));
File::IOFile tmd_file(tmd_filename, "rb");
if (!tmd_file)
{
WARN_LOG(DISCIO, "CreateFromDirectory: error opening %s", tmd_filename.c_str());
return false;
}
tmd.resize(static_cast<size_t>(File::GetSize(tmd_filename)));
tmd_file.ReadBytes(tmd.data(), tmd.size());
}
std::copy(&tmd[0], &tmd[TMD_HEADER_SIZE], m_TMDHeader);
std::copy(&tmd[0x180], &tmd[0x180 + TMD_VIEW_SIZE], m_TMDView);
m_TitleVersion = Common::swap16(&tmd[0x01DC]);
m_NumEntries = Common::swap16(&tmd[0x01DE]);
m_BootIndex = Common::swap16(&tmd[0x01E0]);
m_TitleID = Common::swap64(&tmd[0x018C]);
m_IosVersion = Common::swap16(&tmd[0x018A]);
m_Country = static_cast<u8>(m_TitleID & 0xFF);
if (m_Country == 2) // SYSMENU
m_Country = GetSysMenuRegion(m_TitleVersion);
InitializeContentEntries(tmd, decrypted_title_key, data_app);
return true;
}
void CNANDContentLoader::InitializeContentEntries(const std::vector<u8>& tmd,
const std::vector<u8>& decrypted_title_key,
const std::vector<u8>& data_app)
{
m_Content.resize(m_NumEntries);
std::array<u8, 16> iv;
u32 data_app_offset = 0;
for (u32 i = 0; i < m_NumEntries; i++)
{
const u32 entry_offset = 0x24 * i;
SNANDContent& content = m_Content[i];
content.m_ContentID = Common::swap32(&tmd[entry_offset + 0x01E4]);
content.m_Index = Common::swap16(&tmd[entry_offset + 0x01E8]);
content.m_Type = Common::swap16(&tmd[entry_offset + 0x01EA]);
content.m_Size = static_cast<u32>(Common::swap64(&tmd[entry_offset + 0x01EC]));
const auto header_begin = std::next(tmd.begin(), entry_offset + 0x01E4);
const auto header_end = std::next(header_begin, ArraySize(content.m_Header));
std::copy(header_begin, header_end, content.m_Header);
const auto hash_begin = std::next(tmd.begin(), entry_offset + 0x01F4);
const auto hash_end = std::next(hash_begin, ArraySize(content.m_SHA1Hash));
std::copy(hash_begin, hash_end, content.m_SHA1Hash);
if (m_IsWAD)
{
u32 rounded_size = Common::AlignUp(content.m_Size, 0x40);
iv.fill(0);
std::copy(&tmd[entry_offset + 0x01E8], &tmd[entry_offset + 0x01E8 + 2], iv.begin());
content.m_Data = std::make_unique<CNANDContentDataBuffer>(AESDecode(
decrypted_title_key.data(), iv.data(), &data_app[data_app_offset], rounded_size));
data_app_offset += rounded_size;
continue;
}
std::string filename;
if (content.m_Type & 0x8000) // shared app
filename = CSharedContent::AccessInstance().GetFilenameFromSHA1(content.m_SHA1Hash);
else
filename = StringFromFormat("%s/%08x.app", m_Path.c_str(), content.m_ContentID);
content.m_Data = std::make_unique<CNANDContentDataFile>(filename);
// Be graceful about incorrect TMDs.
if (File::Exists(filename))
content.m_Size = static_cast<u32>(File::GetSize(filename));
}
}
DiscIO::Region CNANDContentLoader::GetRegion() const
{
if (!IsValid())
return DiscIO::Region::UNKNOWN_REGION;
return RegionSwitchWii(m_Country);
}
CNANDContentManager::~CNANDContentManager()
{
}
const CNANDContentLoader& CNANDContentManager::GetNANDLoader(const std::string& content_path)
{
auto it = m_map.find(content_path);
if (it != m_map.end())
return *it->second;
return *m_map
.emplace_hint(it, std::make_pair(content_path,
std::make_unique<CNANDContentLoader>(content_path)))
->second;
}
const CNANDContentLoader& CNANDContentManager::GetNANDLoader(u64 title_id,
Common::FromWhichRoot from)
{
std::string path = Common::GetTitleContentPath(title_id, from);
return GetNANDLoader(path);
}
bool CNANDContentManager::RemoveTitle(u64 title_id, Common::FromWhichRoot from)
{
auto& loader = GetNANDLoader(title_id, from);
if (!loader.IsValid())
return false;
loader.RemoveTitle();
return GetNANDLoader(title_id, from).IsValid();
}
void CNANDContentManager::ClearCache()
{
m_map.clear();
}
void CNANDContentLoader::RemoveTitle() const
{
INFO_LOG(DISCIO, "RemoveTitle %08x/%08x", (u32)(m_TitleID >> 32), (u32)m_TitleID);
if (IsValid())
{
// remove TMD?
for (u32 i = 0; i < m_NumEntries; i++)
{
if (!(m_Content[i].m_Type & 0x8000)) // skip shared apps
{
std::string filename =
StringFromFormat("%s/%08x.app", m_Path.c_str(), m_Content[i].m_ContentID);
INFO_LOG(DISCIO, "Delete %s", filename.c_str());
File::Delete(filename);
}
}
CNANDContentManager::Access().ClearCache(); // deletes 'this'
}
}
cUIDsys::cUIDsys()
{
UpdateLocation();
}
void cUIDsys::UpdateLocation()
{
m_Elements.clear();
m_LastUID = 0x00001000;
m_UidSys = File::GetUserPath(D_SESSION_WIIROOT_IDX) + "/sys/uid.sys";
File::IOFile pFile(m_UidSys, "rb");
SElement Element;
while (pFile.ReadArray(&Element, 1))
{
*(u32*)&(Element.UID) = Common::swap32(m_LastUID++);
m_Elements.push_back(Element);
}
pFile.Close();
if (m_Elements.empty())
{
*(u64*)&(Element.titleID) = Common::swap64(TITLEID_SYSMENU);
*(u32*)&(Element.UID) = Common::swap32(m_LastUID++);
File::CreateFullPath(m_UidSys);
pFile.Open(m_UidSys, "wb");
if (!pFile.WriteArray(&Element, 1))
ERROR_LOG(DISCIO, "Failed to write to %s", m_UidSys.c_str());
}
}
cUIDsys::~cUIDsys()
{
}
u32 cUIDsys::GetUIDFromTitle(u64 title_id)
{
for (auto& Element : m_Elements)
{
if (Common::swap64(title_id) == *(u64*)&(Element.titleID))
{
return Common::swap32(Element.UID);
}
}
return 0;
}
void cUIDsys::AddTitle(u64 title_id)
{
if (GetUIDFromTitle(title_id))
{
INFO_LOG(DISCIO, "Title %08x%08x, already exists in uid.sys", (u32)(title_id >> 32),
(u32)title_id);
return;
}
SElement Element;
*(u64*)&(Element.titleID) = Common::swap64(title_id);
*(u32*)&(Element.UID) = Common::swap32(m_LastUID++);
m_Elements.push_back(Element);
File::CreateFullPath(m_UidSys);
File::IOFile pFile(m_UidSys, "ab");
if (!pFile.WriteArray(&Element, 1))
ERROR_LOG(DISCIO, "fwrite failed");
}
void cUIDsys::GetTitleIDs(std::vector<u64>& title_ids, bool owned)
{
for (auto& Element : m_Elements)
{
if ((owned &&
Common::CheckTitleTIK(Common::swap64(Element.titleID), Common::FROM_SESSION_ROOT)) ||
(!owned &&
Common::CheckTitleTMD(Common::swap64(Element.titleID), Common::FROM_SESSION_ROOT)))
title_ids.push_back(Common::swap64(Element.titleID));
}
}
u64 CNANDContentManager::Install_WiiWAD(const std::string& filename)
{
if (filename.find(".wad") == std::string::npos)
return 0;
const CNANDContentLoader& content_loader = GetNANDLoader(filename);
if (content_loader.IsValid() == false)
return 0;
u64 title_id = content_loader.GetTitleID();
// copy WAD's TMD header and contents to content directory
std::string content_path(Common::GetTitleContentPath(title_id, Common::FROM_CONFIGURED_ROOT));
std::string tmd_filename(Common::GetTMDFileName(title_id, Common::FROM_CONFIGURED_ROOT));
File::CreateFullPath(tmd_filename);
File::IOFile tmd_file(tmd_filename, "wb");
if (!tmd_file)
{
PanicAlertT("WAD installation failed: error creating %s", tmd_filename.c_str());
return 0;
}
tmd_file.WriteBytes(content_loader.GetTMDHeader(), CNANDContentLoader::TMD_HEADER_SIZE);
for (u32 i = 0; i < content_loader.GetContentSize(); i++)
{
const SNANDContent& content = content_loader.GetContent()[i];
tmd_file.WriteBytes(content.m_Header, CNANDContentLoader::CONTENT_HEADER_SIZE);
std::string app_filename;
if (content.m_Type & 0x8000) // shared
app_filename = CSharedContent::AccessInstance().AddSharedContent(content.m_SHA1Hash);
else
app_filename = StringFromFormat("%s%08x.app", content_path.c_str(), content.m_ContentID);
if (!File::Exists(app_filename))
{
File::CreateFullPath(app_filename);
File::IOFile app_file(app_filename, "wb");
if (!app_file)
{
PanicAlertT("WAD installation failed: error creating %s", app_filename.c_str());
return 0;
}
app_file.WriteBytes(content.m_Data->Get().data(), content.m_Size);
}
else
{
INFO_LOG(DISCIO, "Content %s already exists.", app_filename.c_str());
}
}
// Extract and copy WAD's ticket to ticket directory
if (!AddTicket(content_loader.GetTicket()))
{
PanicAlertT("WAD installation failed: error creating ticket");
return 0;
}
cUIDsys::AccessInstance().AddTitle(title_id);
ClearCache();
return title_id;
}
bool AddTicket(const std::vector<u8>& signed_ticket)
{
std::vector<u8> ticket = SignedTicketToTicket(signed_ticket);
if (ticket.empty())
{
return false;
}
u64 title_id = Common::swap64(ticket.data() + 0x9c);
std::string ticket_filename = Common::GetTicketFileName(title_id, Common::FROM_CONFIGURED_ROOT);
File::CreateFullPath(ticket_filename);
File::IOFile ticket_file(ticket_filename, "wb");
if (!ticket_file)
return false;
return ticket_file.WriteBytes(signed_ticket.data(), signed_ticket.size());
}
std::vector<u8> FindSignedTicket(u64 title_id)
{
std::string ticket_filename = Common::GetTicketFileName(title_id, Common::FROM_CONFIGURED_ROOT);
File::IOFile ticket_file(ticket_filename, "rb");
if (!ticket_file)
{
return std::vector<u8>();
}
std::vector<u8> signed_ticket(ticket_file.GetSize());
if (!ticket_file.ReadBytes(signed_ticket.data(), signed_ticket.size()))
{
return std::vector<u8>();
}
return signed_ticket;
}
std::vector<u8> FindTicket(u64 title_id)
{
std::vector<u8> signed_ticket = FindSignedTicket(title_id);
if (signed_ticket.empty())
{
return std::vector<u8>();
}
return SignedTicketToTicket(signed_ticket);
}
std::vector<u8> GetKeyFromTicket(const std::vector<u8>& signed_ticket)
{
const u8 common_key[16] = {0xeb, 0xe4, 0x2a, 0x22, 0x5e, 0x85, 0x93, 0xe4,
0x48, 0xd9, 0xc5, 0x45, 0x73, 0x81, 0xaa, 0xf7};
u8 iv[16] = {};
std::copy(&signed_ticket[0x01DC], &signed_ticket[0x01DC + 8], iv);
return AESDecode(common_key, iv, &signed_ticket[0x01BF], 16);
}
} // namespace end