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Merge pull request #6844 from leoetlino/wii-save-cleanup2

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WiiSave: Reuse IOS services where possible
This commit is contained in:
Léo Lam 2018-05-13 23:08:28 +02:00 committed by GitHub
commit 2be8c35d6d
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 55 additions and 118 deletions
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155
Source/Core/Core/HW/WiiSave.cpp
View file

@ -13,9 +13,7 @@
#include <cstddef>
#include <cstdio>
#include <cstring>
#include <mbedtls/aes.h>
#include <mbedtls/md5.h>
#include <mbedtls/sha1.h>
#include <memory>
#include <string>
#include <vector>
@ -29,71 +27,51 @@
#include "Common/MsgHandler.h"
#include "Common/NandPaths.h"
#include "Common/StringUtil.h"
#include "Core/CommonTitles.h"
#include "Core/IOS/ES/ES.h"
#include "Core/IOS/IOS.h"
#include "Core/IOS/IOSC.h"
#include "Core/IOS/Uids.h"
using Md5 = std::array<u8, 0x10>;
constexpr std::array<u8, 0x10> s_sd_initial_iv{{0x21, 0x67, 0x12, 0xE6, 0xAA, 0x1F, 0x68, 0x9F,
0x95, 0xC5, 0xA2, 0x23, 0x24, 0xDC, 0x6A, 0x98}};
constexpr std::array<u8, 0x10> s_sd_key{{0xAB, 0x01, 0xB9, 0xD8, 0xE1, 0x62, 0x2B, 0x08, 0xAF, 0xBA,
0xD8, 0x4D, 0xBF, 0xC2, 0xA5, 0x5D}};
constexpr Md5 s_md5_blanker{{0x0E, 0x65, 0x37, 0x81, 0x99, 0xBE, 0x45, 0x17, 0xAB, 0x06, 0xEC, 0x22,
0x45, 0x1A, 0x57, 0x93}};
constexpr u32 s_ng_id = 0x0403AC68;
bool WiiSave::Import(std::string filename)
{
WiiSave save_file{std::move(filename)};
IOS::HLE::Kernel ios;
WiiSave save_file{ios, std::move(filename)};
return save_file.Import();
}
bool WiiSave::Export(u64 title_id, std::string export_path)
{
WiiSave export_save{title_id, std::move(export_path)};
IOS::HLE::Kernel ios;
WiiSave export_save{ios, title_id, std::move(export_path)};
return export_save.Export();
}
size_t WiiSave::ExportAll(std::string export_path)
{
std::string title_folder = File::GetUserPath(D_WIIROOT_IDX) + "/title";
std::vector<u64> titles;
const u32 path_mask = 0x00010000;
for (int i = 0; i < 8; ++i)
{
std::string folder = StringFromFormat("%s/%08x/", title_folder.c_str(), path_mask | i);
File::FSTEntry fst_tmp = File::ScanDirectoryTree(folder, false);
for (const File::FSTEntry& entry : fst_tmp.children)
{
if (entry.isDirectory)
{
u32 game_id;
if (AsciiToHex(entry.virtualName, game_id))
{
std::string banner_path =
StringFromFormat("%s%08x/data/banner.bin", folder.c_str(), game_id);
if (File::Exists(banner_path))
{
u64 title_id = (((u64)path_mask | i) << 32) | game_id;
titles.push_back(title_id);
}
}
}
}
}
IOS::HLE::Kernel ios;
size_t exported_save_count = 0;
for (const u64& title : titles)
for (const u64 title : ios.GetES()->GetInstalledTitles())
{
WiiSave export_save{title, export_path};
WiiSave export_save{ios, title, export_path};
if (export_save.Export())
++exported_save_count;
}
return exported_save_count;
}
WiiSave::WiiSave(std::string filename)
: m_sd_iv{s_sd_initial_iv}, m_encrypted_save_path(std::move(filename)), m_valid{true}
WiiSave::WiiSave(IOS::HLE::Kernel& ios, std::string filename)
: m_ios{ios}, m_sd_iv{s_sd_initial_iv},
m_encrypted_save_path(std::move(filename)), m_valid{true}
{
mbedtls_aes_setkey_dec(&m_aes_ctx, s_sd_key.data(), 128);
}
bool WiiSave::Import()
@ -105,11 +83,10 @@ bool WiiSave::Import()
return m_valid;
}
WiiSave::WiiSave(u64 title_id, std::string export_path)
: m_sd_iv{s_sd_initial_iv}, m_encrypted_save_path(std::move(export_path)), m_title_id{title_id}
WiiSave::WiiSave(IOS::HLE::Kernel& ios, u64 title_id, std::string export_path)
: m_ios{ios}, m_sd_iv{s_sd_initial_iv},
m_encrypted_save_path(std::move(export_path)), m_title_id{title_id}
{
mbedtls_aes_setkey_enc(&m_aes_ctx, s_sd_key.data(), 128);
if (getPaths(true))
m_valid = true;
}
@ -140,8 +117,9 @@ void WiiSave::ReadHDR()
}
data_file.Close();
mbedtls_aes_crypt_cbc(&m_aes_ctx, MBEDTLS_AES_DECRYPT, HEADER_SZ, m_sd_iv.data(),
(const u8*)&m_encrypted_header, (u8*)&m_header);
m_ios.GetIOSC().Decrypt(IOS::HLE::IOSC::HANDLE_SD_KEY, m_sd_iv.data(),
reinterpret_cast<const u8*>(&m_encrypted_header), HEADER_SZ,
reinterpret_cast<u8*>(&m_header), IOS::PID_ES);
u32 banner_size = m_header.hdr.banner_size;
if ((banner_size < FULL_BNR_MIN) || (banner_size > FULL_BNR_MAX) ||
(((banner_size - BNR_SZ) % ICON_SZ) != 0))
@ -213,8 +191,9 @@ void WiiSave::WriteHDR()
mbedtls_md5((u8*)&m_header, HEADER_SZ, md5_calc.data());
m_header.hdr.md5 = std::move(md5_calc);
mbedtls_aes_crypt_cbc(&m_aes_ctx, MBEDTLS_AES_ENCRYPT, HEADER_SZ, m_sd_iv.data(),
(const u8*)&m_header, (u8*)&m_encrypted_header);
m_ios.GetIOSC().Encrypt(IOS::HLE::IOSC::HANDLE_SD_KEY, m_sd_iv.data(),
reinterpret_cast<const u8*>(&m_header), HEADER_SZ,
reinterpret_cast<u8*>(&m_encrypted_header), IOS::PID_ES);
File::IOFile data_file(m_encrypted_save_path, "wb");
if (!data_file.WriteBytes(&m_encrypted_header, HEADER_SZ))
@ -345,8 +324,8 @@ void WiiSave::ImportWiiSaveFiles()
}
m_iv = file_hdr_tmp.iv;
mbedtls_aes_crypt_cbc(&m_aes_ctx, MBEDTLS_AES_DECRYPT, file_size_rounded, m_iv.data(),
static_cast<const u8*>(file_data_enc.data()), file_data.data());
m_ios.GetIOSC().Decrypt(IOS::HLE::IOSC::HANDLE_SD_KEY, m_iv.data(), file_data_enc.data(),
file_size_rounded, file_data.data(), IOS::PID_ES);
INFO_LOG(CONSOLE, "Creating file %s", file_path_full.c_str());
@ -439,9 +418,9 @@ void WiiSave::ExportWiiSaveFiles()
m_valid = false;
}
mbedtls_aes_crypt_cbc(&m_aes_ctx, MBEDTLS_AES_ENCRYPT, file_size_rounded,
file_hdr_tmp.iv.data(), static_cast<const u8*>(file_data.data()),
file_data_enc.data());
m_ios.GetIOSC().Encrypt(IOS::HLE::IOSC::HANDLE_SD_KEY, file_hdr_tmp.iv.data(),
file_data.data(), file_size_rounded, file_data_enc.data(),
IOS::PID_ES);
File::IOFile fpData_bin(m_encrypted_save_path, "ab");
if (!fpData_bin.WriteBytes(file_data_enc.data(), file_size_rounded))
@ -456,46 +435,6 @@ void WiiSave::do_sig()
{
if (!m_valid)
return;
u8 sig[0x40];
u8 ng_cert[0x180];
u8 ap_cert[0x180];
u8 hash[0x14];
u8 ap_priv[30];
u8 ap_sig[60];
char signer[64];
char name[64];
u32 data_size;
const u32 ng_key_id = 0x6AAB8C59;
const u8 ng_priv[30] = {0, 0xAB, 0xEE, 0xC1, 0xDD, 0xB4, 0xA6, 0x16, 0x6B, 0x70,
0xFD, 0x7E, 0x56, 0x67, 0x70, 0x57, 0x55, 0x27, 0x38, 0xA3,
0x26, 0xC5, 0x46, 0x16, 0xF7, 0x62, 0xC9, 0xED, 0x73, 0xF2};
const u8 ng_sig[0x3C] = {0, 0xD8, 0x81, 0x63, 0xB2, 0x00, 0x6B, 0x0B, 0x54, 0x82, 0x88, 0x63,
0x81, 0x1C, 0x00, 0x71, 0x12, 0xED, 0xB7, 0xFD, 0x21, 0xAB, 0x0E, 0x50,
0x0E, 0x1F, 0xBF, 0x78, 0xAD, 0x37, 0x00, 0x71, 0x8D, 0x82, 0x41, 0xEE,
0x45, 0x11, 0xC7, 0x3B, 0xAC, 0x08, 0xB6, 0x83, 0xDC, 0x05, 0xB8, 0xA8,
0x90, 0x1F, 0xA8, 0x2A, 0x0E, 0x4E, 0x76, 0xEF, 0x44, 0x72, 0x99, 0xF8};
sprintf(signer, "Root-CA00000001-MS00000002");
sprintf(name, "NG%08x", s_ng_id);
make_ec_cert(ng_cert, ng_sig, signer, name, ng_priv, ng_key_id);
memset(ap_priv, 0, sizeof ap_priv);
ap_priv[10] = 1;
memset(ap_sig, 81, sizeof ap_sig); // temp
sprintf(signer, "Root-CA00000001-MS00000002-NG%08x", s_ng_id);
sprintf(name, "AP%08x%08x", 1, 2);
make_ec_cert(ap_cert, ap_sig, signer, name, ap_priv, 0);
mbedtls_sha1(ap_cert + 0x80, 0x100, hash);
generate_ecdsa(ap_sig, ap_sig + 30, ng_priv, hash);
make_ec_cert(ap_cert, ap_sig, signer, name, ap_priv, 0);
data_size = m_bk_hdr.size_of_files + 0x80;
File::IOFile data_file(m_encrypted_save_path, "rb");
if (!data_file)
@ -503,8 +442,10 @@ void WiiSave::do_sig()
m_valid = false;
return;
}
auto data = std::make_unique<u8[]>(data_size);
// Read data to sign.
const u32 data_size = m_bk_hdr.size_of_files + 0x80;
auto data = std::make_unique<u8[]>(data_size);
data_file.Seek(0xf0c0, SEEK_SET);
if (!data_file.ReadBytes(data.get(), data_size))
{
@ -512,39 +453,29 @@ void WiiSave::do_sig()
return;
}
mbedtls_sha1(data.get(), data_size, hash);
mbedtls_sha1(hash, 20, hash);
// Sign the data.
IOS::Certificate ap_cert;
IOS::ECCSignature ap_sig;
m_ios.GetIOSC().Sign(ap_sig.data(), ap_cert.data(), Titles::SYSTEM_MENU, data.get(), data_size);
// Write signatures.
data_file.Open(m_encrypted_save_path, "ab");
if (!data_file)
{
m_valid = false;
return;
}
generate_ecdsa(sig, sig + 30, ap_priv, hash);
*(u32*)(sig + 60) = Common::swap32(0x2f536969);
data_file.WriteArray(sig, sizeof(sig));
data_file.WriteArray(ng_cert, sizeof(ng_cert));
data_file.WriteArray(ap_cert, sizeof(ap_cert));
data_file.WriteArray(ap_sig.data(), ap_sig.size());
const u32 SIGNATURE_END_MAGIC = Common::swap32(0x2f536969);
data_file.WriteArray(&SIGNATURE_END_MAGIC, sizeof(SIGNATURE_END_MAGIC));
const IOS::Certificate device_certificate = m_ios.GetIOSC().GetDeviceCertificate();
data_file.WriteArray(device_certificate.data(), device_certificate.size());
data_file.WriteArray(ap_cert.data(), ap_cert.size());
m_valid = data_file.IsGood();
}
void WiiSave::make_ec_cert(u8* cert, const u8* sig, const char* signer, const char* name,
const u8* priv, const u32 key_id)
{
memset(cert, 0, 0x180);
*(u32*)cert = Common::swap32(0x10002);
memcpy(cert + 4, sig, 60);
strcpy((char*)cert + 0x80, signer);
*(u32*)(cert + 0xc0) = Common::swap32(2);
strcpy((char*)cert + 0xc4, name);
*(u32*)(cert + 0x104) = Common::swap32(key_id);
ec_priv_to_pub(priv, cert + 0x108);
}
bool WiiSave::getPaths(bool for_export)
{
if (m_title_id)

18
Source/Core/Core/HW/WiiSave.h
View file

@ -5,7 +5,6 @@
#pragma once
#include <array>
#include <mbedtls/aes.h>
#include <string>
#include <utility>
#include <vector>
@ -13,6 +12,14 @@
#include "Common/CommonTypes.h"
#include "Common/Swap.h"
namespace IOS
{
namespace HLE
{
class Kernel;
}
} // namespace IOS::HLE
class WiiSave
{
public:
@ -24,8 +31,8 @@ public:
static size_t ExportAll(std::string export_path);
private:
explicit WiiSave(std::string filename);
explicit WiiSave(u64 title_id, std::string export_path);
WiiSave(IOS::HLE::Kernel& ios, std::string filename);
WiiSave(IOS::HLE::Kernel& ios, u64 title_id, std::string export_path);
~WiiSave();
bool Import();
@ -38,13 +45,12 @@ private:
void ImportWiiSaveFiles();
void ExportWiiSaveFiles();
void do_sig();
void make_ec_cert(u8* cert, const u8* sig, const char* signer, const char* name, const u8* priv,
const u32 key_id);
bool getPaths(bool for_export = false);
void ScanForFiles(const std::string& save_directory, std::vector<std::string>& file_list,
u32* num_files, u32* size_files);
mbedtls_aes_context m_aes_ctx;
IOS::HLE::Kernel& m_ios;
std::array<u8, 0x10> m_sd_iv;
std::vector<std::string> m_files_list;