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SavedataParam.cpp
1926 lines (1679 loc) · 59.2 KB
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SavedataParam.cpp
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// Copyright (c) 2012- PPSSPP Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0 or later versions.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
#include "Common/Log.h"
#include "Common/Data/Text/I18n.h"
#include "Common/Data/Format/ZIMLoad.h"
#include "Common/Serialize/Serializer.h"
#include "Common/Serialize/SerializeFuncs.h"
#include "Common/StringUtils.h"
#include "Core/Config.h"
#include "Core/Host.h"
#include "Core/Reporting.h"
#include "Core/System.h"
#include "Core/Debugger/MemBlockInfo.h"
#include "Core/Dialog/SavedataParam.h"
#include "Core/Dialog/PSPSaveDialog.h"
#include "Core/FileSystems/MetaFileSystem.h"
#include "Core/HLE/sceIo.h"
#include "Core/HLE/sceKernelMemory.h"
#include "Core/HLE/sceChnnlsv.h"
#include "Core/ELF/ParamSFO.h"
#include "Core/HW/MemoryStick.h"
#include "Core/Util/PPGeDraw.h"
#include <algorithm>
static const std::string ICON0_FILENAME = "ICON0.PNG";
static const std::string ICON1_FILENAME = "ICON1.PMF";
static const std::string PIC1_FILENAME = "PIC1.PNG";
static const std::string SND0_FILENAME = "SND0.AT3";
static const std::string SFO_FILENAME = "PARAM.SFO";
static const std::string savePath = "ms0:/PSP/SAVEDATA/";
namespace
{
int getSizeNormalized(int size)
{
int sizeCluster = (int)MemoryStick_SectorSize();
return ((int)((size + sizeCluster - 1) / sizeCluster)) * sizeCluster;
}
void SetStringFromSFO(ParamSFOData &sfoFile, const char *name, char *str, int strLength)
{
std::string value = sfoFile.GetValueString(name);
truncate_cpy(str, strLength, value.c_str());
}
bool ReadPSPFile(std::string filename, u8 **data, s64 dataSize, s64 *readSize)
{
int handle = pspFileSystem.OpenFile(filename, FILEACCESS_READ);
if (handle < 0)
return false;
if (dataSize == -1) {
// Determine the size through seeking instead of querying.
pspFileSystem.SeekFile(handle, 0, FILEMOVE_END);
dataSize = pspFileSystem.GetSeekPos(handle);
pspFileSystem.SeekFile(handle, 0, FILEMOVE_BEGIN);
*data = new u8[(size_t)dataSize];
}
size_t result = pspFileSystem.ReadFile(handle, *data, dataSize);
pspFileSystem.CloseFile(handle);
if(readSize)
*readSize = result;
return result != 0;
}
bool WritePSPFile(std::string filename, u8 *data, SceSize dataSize)
{
int handle = pspFileSystem.OpenFile(filename, (FileAccess)(FILEACCESS_WRITE | FILEACCESS_CREATE | FILEACCESS_TRUNCATE));
if (handle < 0)
return false;
size_t result = pspFileSystem.WriteFile(handle, data, dataSize);
pspFileSystem.CloseFile(handle);
return result == dataSize;
}
bool PSPMatch(std::string text, std::string regexp)
{
if(text.empty() && regexp.empty())
return true;
else if(regexp == "*")
return true;
else if(text.empty())
return false;
else if(regexp.empty())
return false;
else if(regexp == "?" && text.length() == 1)
return true;
else if(text == regexp)
return true;
else if(regexp.data()[0] == '*')
{
bool res = PSPMatch(text.substr(1),regexp.substr(1));
if(!res)
res = PSPMatch(text.substr(1),regexp);
return res;
}
else if(regexp.data()[0] == '?')
{
return PSPMatch(text.substr(1),regexp.substr(1));
}
else if(regexp.data()[0] == text.data()[0])
{
return PSPMatch(text.substr(1),regexp.substr(1));
}
return false;
}
int align16(int address)
{
return ((address + 0xF) >> 4) << 4;
}
int GetSDKMainVersion(int sdkVersion)
{
if(sdkVersion > 0x0307FFFF)
return 6;
if(sdkVersion > 0x0300FFFF)
return 5;
if(sdkVersion > 0x0206FFFF)
return 4;
if(sdkVersion > 0x0205FFFF)
return 3;
if(sdkVersion >= 0x02000000)
return 2;
if(sdkVersion >= 0x01000000)
return 1;
return 0;
};
}
void SaveFileInfo::DoState(PointerWrap &p)
{
auto s = p.Section("SaveFileInfo", 1, 2);
if (!s)
return;
Do(p, size);
Do(p, saveName);
Do(p, idx);
DoArray(p, title, sizeof(title));
DoArray(p, saveTitle, sizeof(saveTitle));
DoArray(p, saveDetail, sizeof(saveDetail));
Do(p, modif_time);
if (s <= 1) {
u32 textureData;
int textureWidth;
int textureHeight;
Do(p, textureData);
Do(p, textureWidth);
Do(p, textureHeight);
if (textureData != 0) {
// Must be MODE_READ.
texture = new PPGeImage("");
texture->CompatLoad(textureData, textureWidth, textureHeight);
}
} else {
bool hasTexture = texture != NULL;
Do(p, hasTexture);
if (hasTexture) {
if (p.mode == p.MODE_READ) {
delete texture;
texture = new PPGeImage("");
}
texture->DoState(p);
}
}
}
SavedataParam::SavedataParam() { }
void SavedataParam::Init()
{
if (!pspFileSystem.GetFileInfo(savePath).exists)
{
pspFileSystem.MkDir(savePath);
}
// Create a nomedia file to hide save icons form Android image viewer
#if PPSSPP_PLATFORM(ANDROID)
int handle = pspFileSystem.OpenFile(savePath + ".nomedia", (FileAccess)(FILEACCESS_CREATE | FILEACCESS_WRITE), 0);
if (handle >= 0) {
pspFileSystem.CloseFile(handle);
} else {
INFO_LOG(IO, "Failed to create .nomedia file (might be ok if it already exists)");
}
#endif
}
std::string SavedataParam::GetSaveDirName(const SceUtilitySavedataParam *param, int saveId) const
{
if (!param) {
return "";
}
if (saveId >= 0 && saveNameListDataCount > 0) // if user selection, use it
return GetFilename(saveId);
else
return GetSaveName(param);
}
std::string SavedataParam::GetSaveDir(const SceUtilitySavedataParam *param, const std::string &saveDirName) const
{
if (!param) {
return "";
}
return GetGameName(param) + saveDirName;
}
std::string SavedataParam::GetSaveDir(const SceUtilitySavedataParam *param, int saveId) const
{
return GetSaveDir(param, GetSaveDirName(param, saveId));
}
std::string SavedataParam::GetSaveFilePath(const SceUtilitySavedataParam *param, const std::string &saveDir) const
{
if (!param) {
return "";
}
if (!saveDir.size())
return "";
return savePath + saveDir;
}
std::string SavedataParam::GetSaveFilePath(const SceUtilitySavedataParam *param, int saveId) const
{
return GetSaveFilePath(param, GetSaveDir(param, saveId));
}
inline static std::string FixedToString(const char *str, size_t n)
{
if (!str) {
return std::string("");
} else {
return std::string(str, strnlen(str, n));
}
}
std::string SavedataParam::GetGameName(const SceUtilitySavedataParam *param) const
{
return FixedToString(param->gameName, ARRAY_SIZE(param->gameName));
}
std::string SavedataParam::GetSaveName(const SceUtilitySavedataParam *param) const
{
const std::string saveName = FixedToString(param->saveName, ARRAY_SIZE(param->saveName));
if (saveName == "<>")
return "";
return saveName;
}
std::string SavedataParam::GetFileName(const SceUtilitySavedataParam *param) const
{
return FixedToString(param->fileName, ARRAY_SIZE(param->fileName));
}
std::string SavedataParam::GetKey(const SceUtilitySavedataParam *param) const
{
static const char* const lut = "0123456789ABCDEF";
std::string output;
if (HasKey(param))
{
output.reserve(2 * sizeof(param->key));
for (size_t i = 0; i < sizeof(param->key); ++i)
{
const unsigned char c = param->key[i];
output.push_back(lut[c >> 4]);
output.push_back(lut[c & 15]);
}
}
return output;
}
bool SavedataParam::HasKey(const SceUtilitySavedataParam *param) const
{
for (size_t i = 0; i < ARRAY_SIZE(param->key); ++i)
{
if (param->key[i] != 0)
return true;
}
return false;
}
bool SavedataParam::Delete(SceUtilitySavedataParam* param, int saveId) {
if (!param) {
return false;
}
// Sanity check, preventing full delete of savedata/ in MGS PW demo (!)
if (!strlen(param->gameName) && param->mode != SCE_UTILITY_SAVEDATA_TYPE_LISTALLDELETE) {
ERROR_LOG(SCEUTILITY, "Bad param with gameName empty - cannot delete save directory");
return false;
}
std::string dirPath = GetSaveFilePath(param, GetSaveDir(saveId));
if (dirPath.size() == 0) {
ERROR_LOG(SCEUTILITY, "GetSaveFilePath returned empty - cannot delete save directory");
return false;
}
if (!pspFileSystem.GetFileInfo(dirPath).exists) {
return false;
}
pspFileSystem.RmDir(dirPath);
return true;
}
int SavedataParam::DeleteData(SceUtilitySavedataParam* param) {
if (!param) {
return SCE_UTILITY_SAVEDATA_ERROR_RW_FILE_NOT_FOUND;
}
std::string subFolder = GetGameName(param) + GetSaveName(param);
std::string fileName = GetFileName(param);
std::string dirPath = savePath + subFolder;
std::string filePath = dirPath + "/" + fileName;
std::string sfoPath = dirPath + "/" + SFO_FILENAME;
if (!pspFileSystem.GetFileInfo(dirPath).exists) {
return SCE_UTILITY_SAVEDATA_ERROR_RW_NO_DATA;
}
if (!pspFileSystem.GetFileInfo(sfoPath).exists)
return SCE_UTILITY_SAVEDATA_ERROR_RW_DATA_BROKEN;
if (fileName != "" && !pspFileSystem.GetFileInfo(filePath).exists) {
return SCE_UTILITY_SAVEDATA_ERROR_RW_FILE_NOT_FOUND;
}
if (fileName == "") {
return 0;
}
if (!subFolder.size()) {
ERROR_LOG(SCEUTILITY, "Bad subfolder, ignoring delete of %s", filePath.c_str());
return 0;
}
pspFileSystem.RemoveFile(filePath);
return 0;
}
int SavedataParam::Save(SceUtilitySavedataParam* param, const std::string &saveDirName, bool secureMode) {
if (!param) {
return SCE_UTILITY_SAVEDATA_ERROR_SAVE_MS_NOSPACE;
}
if (param->dataSize > param->dataBufSize) {
ERROR_LOG_REPORT(SCEUTILITY, "Savedata buffer overflow: %d / %d", param->dataSize, param->dataBufSize);
return SCE_UTILITY_SAVEDATA_ERROR_RW_BAD_PARAMS;
}
auto validateSize = [](const PspUtilitySavedataFileData &data) {
if (data.buf.IsValid() && data.bufSize < data.size) {
ERROR_LOG_REPORT(SCEUTILITY, "Savedata subdata buffer overflow: %d / %d", data.size, data.bufSize);
return false;
}
return true;
};
if (!validateSize(param->icon0FileData) || !validateSize(param->icon1FileData) || !validateSize(param->pic1FileData) || !validateSize(param->snd0FileData)) {
return SCE_UTILITY_SAVEDATA_ERROR_RW_BAD_PARAMS;
}
if (param->secureVersion > 3) {
ERROR_LOG_REPORT(SCEUTILITY, "Savedata version requested on save: %d", param->secureVersion);
return SCE_UTILITY_SAVEDATA_ERROR_SAVE_PARAM;
} else if (param->secureVersion != 0) {
if (param->secureVersion != 1 && !HasKey(param) && secureMode) {
ERROR_LOG_REPORT(SCEUTILITY, "Savedata version with missing key on save: %d", param->secureVersion);
return SCE_UTILITY_SAVEDATA_ERROR_SAVE_PARAM;
}
WARN_LOG_REPORT(SCEUTILITY, "Savedata version requested on save: %d", param->secureVersion);
}
std::string dirPath = GetSaveFilePath(param, GetSaveDir(param, saveDirName));
if (!pspFileSystem.GetFileInfo(dirPath).exists) {
if (!pspFileSystem.MkDir(dirPath)) {
auto err = GetI18NCategory("Error");
host->NotifyUserMessage(err->T("Unable to write savedata, disk may be full"));
}
}
u8* cryptedData = 0;
int cryptedSize = 0;
u8 cryptedHash[0x10]{};
// Encrypt save.
// TODO: Is this the correct difference between MAKEDATA and MAKEDATASECURE?
if (param->dataBuf.IsValid() && g_Config.bEncryptSave && secureMode)
{
cryptedSize = param->dataSize;
if(cryptedSize == 0 || (SceSize)cryptedSize > param->dataBufSize)
cryptedSize = param->dataBufSize; // fallback, should never use this
u8 *data_ = param->dataBuf;
int aligned_len = align16(cryptedSize);
cryptedData = new u8[aligned_len + 0x10];
memcpy(cryptedData, data_, cryptedSize);
int decryptMode = DetermineCryptMode(param);
bool hasKey = decryptMode > 1;
if (hasKey && !HasKey(param)) {
delete[] cryptedData;
return SCE_UTILITY_SAVEDATA_ERROR_SAVE_PARAM;
}
if (EncryptData(decryptMode, cryptedData, &cryptedSize, &aligned_len, cryptedHash, (hasKey ? param->key : 0)) != 0) {
auto err = GetI18NCategory("Error");
host->NotifyUserMessage(err->T("Save encryption failed. This save won't work on real PSP"), 6.0f);
ERROR_LOG(SCEUTILITY,"Save encryption failed. This save won't work on real PSP");
delete[] cryptedData;
cryptedData = 0;
}
}
// SAVE PARAM.SFO
ParamSFOData sfoFile;
std::string sfopath = dirPath + "/" + SFO_FILENAME;
{
std::vector<u8> sfoData;
if (pspFileSystem.ReadEntireFile(sfopath, sfoData) >= 0)
sfoFile.ReadSFO(sfoData);
}
// Update values
sfoFile.SetValue("TITLE",param->sfoParam.title,128);
sfoFile.SetValue("SAVEDATA_TITLE",param->sfoParam.savedataTitle,128);
sfoFile.SetValue("SAVEDATA_DETAIL",param->sfoParam.detail,1024);
sfoFile.SetValue("PARENTAL_LEVEL",param->sfoParam.parentalLevel,4);
sfoFile.SetValue("CATEGORY","MS",4);
sfoFile.SetValue("SAVEDATA_DIRECTORY", GetSaveDir(param, saveDirName), 64);
// Always write and update the file list.
// For each file, 13 bytes for filename, 16 bytes for file hash (0 in PPSSPP), 3 byte for padding
const int FILE_LIST_COUNT_MAX = 99;
const u32 FILE_LIST_TOTAL_SIZE = sizeof(SaveSFOFileListEntry) * FILE_LIST_COUNT_MAX;
u32 tmpDataSize = 0;
SaveSFOFileListEntry *tmpDataOrig = (SaveSFOFileListEntry *)sfoFile.GetValueData("SAVEDATA_FILE_LIST", &tmpDataSize);
SaveSFOFileListEntry *updatedList = new SaveSFOFileListEntry[FILE_LIST_COUNT_MAX];
if (tmpDataSize != 0)
memcpy(updatedList, tmpDataOrig, std::min(tmpDataSize, FILE_LIST_TOTAL_SIZE));
if (tmpDataSize < FILE_LIST_TOTAL_SIZE)
memset(updatedList + tmpDataSize, 0, FILE_LIST_TOTAL_SIZE - tmpDataSize);
// Leave a hash there and unchanged if it was already there.
if (secureMode && param->dataBuf.IsValid()) {
const std::string saveFilename = GetFileName(param);
for (auto entry = updatedList; entry < updatedList + FILE_LIST_COUNT_MAX; ++entry) {
if (entry->filename[0] != '\0') {
if (strncmp(entry->filename, saveFilename.c_str(), sizeof(entry->filename)) != 0)
continue;
}
snprintf(entry->filename, sizeof(entry->filename), "%s", saveFilename.c_str());
memcpy(entry->hash, cryptedHash, 16);
break;
}
}
sfoFile.SetValue("SAVEDATA_FILE_LIST", (u8 *)updatedList, FILE_LIST_TOTAL_SIZE, (int)FILE_LIST_TOTAL_SIZE);
delete[] updatedList;
// Init param with 0. This will be used to detect crypted save or not on loading
u8 *tmpData = new u8[128];
memset(tmpData, 0, 128);
sfoFile.SetValue("SAVEDATA_PARAMS", tmpData, 128, 128);
delete[] tmpData;
u8 *sfoData;
size_t sfoSize;
sfoFile.WriteSFO(&sfoData,&sfoSize);
// Calc SFO hash for PSP.
if(cryptedData != 0)
{
int offset = sfoFile.GetDataOffset(sfoData,"SAVEDATA_PARAMS");
if(offset >= 0)
UpdateHash(sfoData, (int)sfoSize, offset, DetermineCryptMode(param));
}
WritePSPFile(sfopath, sfoData, (SceSize)sfoSize);
delete[] sfoData;
if(param->dataBuf.IsValid()) // Can launch save without save data in mode 13
{
std::string fileName = GetFileName(param);
std::string filePath = dirPath + "/" + fileName;
u8 *data_ = 0;
SceSize saveSize = 0;
if(cryptedData == 0) // Save decrypted data
{
saveSize = param->dataSize;
if(saveSize == 0 || saveSize > param->dataBufSize)
saveSize = param->dataBufSize; // fallback, should never use this
data_ = param->dataBuf;
}
else
{
data_ = cryptedData;
saveSize = cryptedSize;
}
INFO_LOG(SCEUTILITY,"Saving file with size %u in %s",saveSize,filePath.c_str());
// copy back save name in request
strncpy(param->saveName, saveDirName.c_str(), 20);
if (fileName == "") {
delete[] cryptedData;
} else {
if (!WritePSPFile(filePath, data_, saveSize)) {
ERROR_LOG(SCEUTILITY, "Error writing file %s", filePath.c_str());
delete[] cryptedData;
return SCE_UTILITY_SAVEDATA_ERROR_SAVE_MS_NOSPACE;
}
delete[] cryptedData;
}
}
// SAVE ICON0
if (param->icon0FileData.buf.IsValid())
{
std::string icon0path = dirPath + "/" + ICON0_FILENAME;
WritePSPFile(icon0path, param->icon0FileData.buf, param->icon0FileData.size);
}
// SAVE ICON1
if (param->icon1FileData.buf.IsValid())
{
std::string icon1path = dirPath + "/" + ICON1_FILENAME;
WritePSPFile(icon1path, param->icon1FileData.buf, param->icon1FileData.size);
}
// SAVE PIC1
if (param->pic1FileData.buf.IsValid())
{
std::string pic1path = dirPath + "/" + PIC1_FILENAME;
WritePSPFile(pic1path, param->pic1FileData.buf, param->pic1FileData.size);
}
// Save SND
if (param->snd0FileData.buf.IsValid())
{
std::string snd0path = dirPath + "/" + SND0_FILENAME;
WritePSPFile(snd0path, param->snd0FileData.buf, param->snd0FileData.size);
}
return 0;
}
int SavedataParam::Load(SceUtilitySavedataParam *param, const std::string &saveDirName, int saveId, bool secureMode) {
if (!param) {
return SCE_UTILITY_SAVEDATA_ERROR_LOAD_NO_DATA;
}
bool isRWMode = param->mode == SCE_UTILITY_SAVEDATA_TYPE_READDATA || param->mode == SCE_UTILITY_SAVEDATA_TYPE_READDATASECURE;
std::string dirPath = GetSaveFilePath(param, GetSaveDir(param, saveDirName));
std::string fileName = GetFileName(param);
std::string filePath = dirPath + "/" + fileName;
std::string sfoPath = dirPath + "/" + SFO_FILENAME;
if (!pspFileSystem.GetFileInfo(dirPath).exists) {
return isRWMode ? SCE_UTILITY_SAVEDATA_ERROR_RW_NO_DATA : SCE_UTILITY_SAVEDATA_ERROR_LOAD_NO_DATA;
}
if (fileName != "" && !pspFileSystem.GetFileInfo(filePath).exists) {
return isRWMode ? SCE_UTILITY_SAVEDATA_ERROR_RW_FILE_NOT_FOUND : SCE_UTILITY_SAVEDATA_ERROR_LOAD_FILE_NOT_FOUND;
}
// If it wasn't zero, force to zero before loading and especially in case of error.
// This isn't reset if the path doesn't even exist.
param->dataSize = 0;
int result = LoadSaveData(param, saveDirName, dirPath, secureMode);
if (result != 0)
return result;
// Load sfo
if (!LoadSFO(param, dirPath)) {
return isRWMode ? SCE_UTILITY_SAVEDATA_ERROR_RW_DATA_BROKEN : SCE_UTILITY_SAVEDATA_ERROR_LOAD_DATA_BROKEN;
}
// Don't know what it is, but PSP always respond this and this unlock some game
param->bind = 1021;
// Load other files, seems these are required by some games, e.g. Fushigi no Dungeon Fuurai no Shiren 4 Plus.
// Load ICON0.PNG
LoadFile(dirPath, ICON0_FILENAME, ¶m->icon0FileData);
// Load ICON1.PNG
LoadFile(dirPath, ICON1_FILENAME, ¶m->icon1FileData);
// Load PIC1.PNG
LoadFile(dirPath, PIC1_FILENAME, ¶m->pic1FileData);
// Load SND0.AT3
LoadFile(dirPath, SND0_FILENAME, ¶m->snd0FileData);
return 0;
}
int SavedataParam::LoadSaveData(SceUtilitySavedataParam *param, const std::string &saveDirName, const std::string &dirPath, bool secureMode) {
if (param->secureVersion > 3) {
ERROR_LOG_REPORT(SCEUTILITY, "Savedata version requested: %d", param->secureVersion);
return SCE_UTILITY_SAVEDATA_ERROR_LOAD_PARAM;
} else if (param->secureVersion != 0) {
if (param->secureVersion != 1 && !HasKey(param) && secureMode) {
ERROR_LOG_REPORT(SCEUTILITY, "Savedata version with missing key: %d", param->secureVersion);
return SCE_UTILITY_SAVEDATA_ERROR_LOAD_PARAM;
}
WARN_LOG_REPORT(SCEUTILITY, "Savedata version requested: %d", param->secureVersion);
}
std::string filename = GetFileName(param);
std::string filePath = dirPath + "/" + filename;
// Blank filename always means success, if secureVersion was correct.
if (filename == "")
return 0;
s64 readSize;
INFO_LOG(SCEUTILITY, "Loading file with size %u in %s", param->dataBufSize, filePath.c_str());
u8 *saveData = nullptr;
int saveSize = -1;
if (!ReadPSPFile(filePath, &saveData, saveSize, &readSize)) {
ERROR_LOG(SCEUTILITY,"Error reading file %s",filePath.c_str());
return SCE_UTILITY_SAVEDATA_ERROR_LOAD_NO_DATA;
}
saveSize = (int)readSize;
// copy back save name in request
strncpy(param->saveName, saveDirName.c_str(), 20);
int prevCryptMode = GetSaveCryptMode(param, saveDirName);
bool isCrypted = prevCryptMode != 0 && secureMode;
bool saveDone = false;
u32 loadedSize = 0;
if (isCrypted) {
if (DetermineCryptMode(param) > 1 && !HasKey(param))
return SCE_UTILITY_SAVEDATA_ERROR_LOAD_PARAM;
u8 hash[16];
bool hasExpectedHash = GetExpectedHash(dirPath, filename, hash);
loadedSize = LoadCryptedSave(param, param->dataBuf, saveData, saveSize, prevCryptMode, hasExpectedHash ? hash : nullptr, saveDone);
// TODO: Should return SCE_UTILITY_SAVEDATA_ERROR_LOAD_DATA_BROKEN here if !saveDone.
}
if (!saveDone) {
loadedSize = LoadNotCryptedSave(param, param->dataBuf, saveData, saveSize);
}
delete[] saveData;
// Ignore error codes.
if (loadedSize != 0 && (loadedSize & 0x80000000) == 0) {
std::string tag = "LoadSaveData/" + filePath;
NotifyMemInfo(MemBlockFlags::WRITE, param->dataBuf.ptr, loadedSize, tag.c_str(), tag.size());
}
if ((loadedSize & 0x80000000) != 0)
return loadedSize;
param->dataSize = (SceSize)saveSize;
return 0;
}
int SavedataParam::DetermineCryptMode(const SceUtilitySavedataParam *param) const {
int decryptMode = 1;
if (param->secureVersion == 1) {
decryptMode = 1;
} else if (param->secureVersion == 2) {
decryptMode = 3;
} else if (param->secureVersion == 3) {
decryptMode = GetSDKMainVersion(sceKernelGetCompiledSdkVersion()) >= 4 ? 5 : 1;
} else if (HasKey(param)) {
// TODO: This should ignore HasKey(), which would trigger errors. Not doing that yet to play it safe.
decryptMode = GetSDKMainVersion(sceKernelGetCompiledSdkVersion()) >= 4 ? 5 : 3;
}
return decryptMode;
}
u32 SavedataParam::LoadCryptedSave(SceUtilitySavedataParam *param, u8 *data, const u8 *saveData, int &saveSize, int prevCryptMode, const u8 *expectedHash, bool &saveDone) {
int orig_size = saveSize;
int align_len = align16(saveSize);
u8 *data_base = new u8[align_len];
u8 *cryptKey = new u8[0x10];
int decryptMode = DetermineCryptMode(param);
const int detectedMode = decryptMode;
bool hasKey;
auto resetData = [&](int mode) {
saveSize = orig_size;
align_len = align16(saveSize);
hasKey = mode > 1;
if (hasKey) {
memcpy(cryptKey, param->key, 0x10);
}
memcpy(data_base, saveData, saveSize);
memset(data_base + saveSize, 0, align_len - saveSize);
};
resetData(decryptMode);
if (decryptMode != prevCryptMode) {
if (prevCryptMode == 1 && param->key[0] == 0) {
// Backwards compat for a bug we used to have.
WARN_LOG(SCEUTILITY, "Savedata loading with hashmode %d instead of detected %d", prevCryptMode, decryptMode);
decryptMode = prevCryptMode;
// Don't notify the user if we're not going to upgrade the save.
if (!g_Config.bEncryptSave) {
auto di = GetI18NCategory("Dialog");
host->NotifyUserMessage(di->T("When you save, it will load on a PSP, but not an older PPSSPP"), 6.0f);
host->NotifyUserMessage(di->T("Old savedata detected"), 6.0f);
}
} else {
if (decryptMode == 5 && prevCryptMode == 3) {
WARN_LOG(SCEUTILITY, "Savedata loading with detected hashmode %d instead of file's %d", decryptMode, prevCryptMode);
} else {
WARN_LOG_REPORT(SCEUTILITY, "Savedata loading with detected hashmode %d instead of file's %d", decryptMode, prevCryptMode);
}
if (g_Config.bSavedataUpgrade) {
decryptMode = prevCryptMode;
auto di = GetI18NCategory("Dialog");
host->NotifyUserMessage(di->T("When you save, it will not work on outdated PSP Firmware anymore"), 6.0f);
host->NotifyUserMessage(di->T("Old savedata detected"), 6.0f);
}
}
hasKey = decryptMode > 1;
}
int err = DecryptSave(decryptMode, data_base, &saveSize, &align_len, hasKey ? cryptKey : nullptr, expectedHash);
// Perhaps the file had the wrong mode....
if (err != 0 && detectedMode != decryptMode) {
resetData(detectedMode);
err = DecryptSave(detectedMode, data_base, &saveSize, &align_len, hasKey ? cryptKey : nullptr, expectedHash);
}
// TODO: Should return an error, but let's just try with a bad hash.
if (err != 0 && expectedHash != nullptr) {
WARN_LOG(SCEUTILITY, "Incorrect hash on save data, likely corrupt");
resetData(decryptMode);
err = DecryptSave(decryptMode, data_base, &saveSize, &align_len, hasKey ? cryptKey : nullptr, nullptr);
}
u32 sz = 0;
if (err == 0) {
if (param->dataBuf.IsValid()) {
if ((u32)saveSize > param->dataBufSize || !Memory::IsValidRange(param->dataBuf.ptr, saveSize)) {
sz = SCE_UTILITY_SAVEDATA_ERROR_LOAD_DATA_BROKEN;
} else {
sz = (u32)saveSize;
memcpy(data, data_base, sz);
}
}
saveDone = true;
}
delete[] data_base;
delete[] cryptKey;
return sz;
}
u32 SavedataParam::LoadNotCryptedSave(SceUtilitySavedataParam *param, u8 *data, u8 *saveData, int &saveSize) {
if (param->dataBuf.IsValid()) {
if ((u32)saveSize > param->dataBufSize || !Memory::IsValidRange(param->dataBuf.ptr, saveSize)) {
return SCE_UTILITY_SAVEDATA_ERROR_LOAD_DATA_BROKEN;
}
memcpy(data, saveData, saveSize);
return saveSize;
}
return 0;
}
bool SavedataParam::LoadSFO(SceUtilitySavedataParam *param, const std::string& dirPath) {
ParamSFOData sfoFile;
std::string sfopath = dirPath + "/" + SFO_FILENAME;
std::vector<u8> sfoData;
if (pspFileSystem.ReadEntireFile(sfopath, sfoData) >= 0) {
sfoFile.ReadSFO(sfoData);
// copy back info in request
strncpy(param->sfoParam.title,sfoFile.GetValueString("TITLE").c_str(),128);
strncpy(param->sfoParam.savedataTitle,sfoFile.GetValueString("SAVEDATA_TITLE").c_str(),128);
strncpy(param->sfoParam.detail,sfoFile.GetValueString("SAVEDATA_DETAIL").c_str(),1024);
param->sfoParam.parentalLevel = sfoFile.GetValueInt("PARENTAL_LEVEL");
return true;
} else {
return false;
}
}
std::vector<SaveSFOFileListEntry> SavedataParam::GetSFOEntries(const std::string &dirPath) {
std::vector<SaveSFOFileListEntry> result;
const std::string sfoPath = dirPath + "/" + SFO_FILENAME;
ParamSFOData sfoFile;
std::vector<u8> sfoData;
if (pspFileSystem.ReadEntireFile(sfoPath, sfoData) >= 0) {
sfoFile.ReadSFO(sfoData);
} else {
return result;
}
const int FILE_LIST_COUNT_MAX = 99;
u32 sfoFileListSize = 0;
SaveSFOFileListEntry *sfoFileList = (SaveSFOFileListEntry *)sfoFile.GetValueData("SAVEDATA_FILE_LIST", &sfoFileListSize);
const u32 count = std::min((u32)FILE_LIST_COUNT_MAX, sfoFileListSize / (u32)sizeof(SaveSFOFileListEntry));
for (u32 i = 0; i < count; ++i) {
if (sfoFileList[i].filename[0] != '\0')
result.push_back(sfoFileList[i]);
}
return result;
}
std::set<std::string> SavedataParam::GetSecureFileNames(const std::string &dirPath) {
auto entries = GetSFOEntries(dirPath);
std::set<std::string> secureFileNames;
for (auto entry : entries) {
char temp[14];
truncate_cpy(temp, entry.filename);
secureFileNames.insert(temp);
}
return secureFileNames;
}
bool SavedataParam::GetExpectedHash(const std::string &dirPath, const std::string &filename, u8 hash[16]) {
auto entries = GetSFOEntries(dirPath);
for (auto entry : entries) {
if (strncmp(entry.filename, filename.c_str(), sizeof(entry.filename)) == 0) {
memcpy(hash, entry.hash, sizeof(entry.hash));
return true;
}
}
return false;
}
void SavedataParam::LoadFile(const std::string& dirPath, const std::string& filename, PspUtilitySavedataFileData *fileData) {
std::string filePath = dirPath + "/" + filename;
if (!fileData->buf.IsValid())
return;
u8 *buf = fileData->buf;
u32 size = Memory::ValidSize(fileData->buf.ptr, fileData->bufSize);
s64 readSize = -1;
if (ReadPSPFile(filePath, &buf, size, &readSize)) {
fileData->size = readSize;
const std::string tag = "SavedataLoad/" + filePath;
NotifyMemInfo(MemBlockFlags::WRITE, fileData->buf.ptr, fileData->size, tag.c_str(), tag.size());
}
}
int SavedataParam::EncryptData(unsigned int mode,
unsigned char *data,
int *dataLen,
int *alignedLen,
unsigned char *hash,
unsigned char *cryptkey)
{
pspChnnlsvContext1 ctx1;
pspChnnlsvContext2 ctx2;
/* Make room for the IV in front of the data. */
memmove(data + 0x10, data, *alignedLen);
/* Set up buffers */
memset(&ctx1, 0, sizeof(pspChnnlsvContext1));
memset(&ctx2, 0, sizeof(pspChnnlsvContext2));
memset(hash, 0, 0x10);
memset(data, 0, 0x10);
/* Build the 0x10-byte IV and setup encryption */
if (sceSdCreateList_(ctx2, mode, 1, data, cryptkey) < 0)
return -1;
if (sceSdSetIndex_(ctx1, mode) < 0)
return -2;
if (sceSdRemoveValue_(ctx1, data, 0x10) < 0)
return -3;
if (sceSdSetMember_(ctx2, data + 0x10, *alignedLen) < 0)
return -4;
/* Clear any extra bytes left from the previous steps */
memset(data + 0x10 + *dataLen, 0, *alignedLen - *dataLen);
/* Encrypt the data */
if (sceSdRemoveValue_(ctx1, data + 0x10, *alignedLen) < 0)
return -5;
/* Verify encryption */
if (sceChnnlsv_21BE78B4_(ctx2) < 0)
return -6;
/* Build the file hash from this PSP */
if (sceSdGetLastIndex_(ctx1, hash, cryptkey) < 0)
return -7;
/* Adjust sizes to account for IV */
*alignedLen += 0x10;
*dataLen += 0x10;
/* All done */
return 0;
}
int SavedataParam::DecryptSave(unsigned int mode, unsigned char *data, int *dataLen, int *alignedLen, unsigned char *cryptkey, const u8 *expectedHash) {
pspChnnlsvContext1 ctx1;
pspChnnlsvContext2 ctx2;
/* Need a 16-byte IV plus some data */
if (*alignedLen <= 0x10)
return -1;
*dataLen -= 0x10;
*alignedLen -= 0x10;
/* Set up buffers */
memset(&ctx1, 0, sizeof(pspChnnlsvContext1));
memset(&ctx2, 0, sizeof(pspChnnlsvContext2));
/* Perform the magic */
if (sceSdSetIndex_(ctx1, mode) < 0)
return -2;
if (sceSdCreateList_(ctx2, mode, 2, data, cryptkey) < 0)
return -3;
if (sceSdRemoveValue_(ctx1, data, 0x10) < 0)
return -4;
if (sceSdRemoveValue_(ctx1, data + 0x10, *alignedLen) < 0)
return -5;
if (sceSdSetMember_(ctx2, data + 0x10, *alignedLen) < 0)
return -6;
/* Verify that it decrypted correctly */
if (sceChnnlsv_21BE78B4_(ctx2) < 0)
return -7;
if (expectedHash) {
u8 hash[16];
if (sceSdGetLastIndex_(ctx1, hash, cryptkey) < 0)
return -7;
if (memcmp(hash, expectedHash, sizeof(hash)) != 0)
return -8;
}
/* The decrypted data starts at data + 0x10, so shift it back. */
memmove(data, data + 0x10, *dataLen);
return 0;
}
int SavedataParam::UpdateHash(u8* sfoData, int sfoSize, int sfoDataParamsOffset, int encryptmode)
{
int alignedLen = align16(sfoSize);
memset(sfoData+sfoDataParamsOffset, 0, 128);
u8 filehash[16];
int ret = 0;
int firstHashMode = encryptmode & 2 ? 4 : 2;
int secondHashMode = encryptmode & 2 ? 3 : 0;
if (encryptmode & 4) {
firstHashMode = 6;
secondHashMode = 5;
}
// Compute 11D0 hash over entire file
if ((ret = BuildHash(filehash, sfoData, sfoSize, alignedLen, firstHashMode, 0)) < 0)
{
// Not sure about "2"
return ret - 400;
}
// Copy 11D0 hash to param.sfo and set flag indicating it's there
memcpy(sfoData+sfoDataParamsOffset + 0x20, filehash, 0x10);
*(sfoData+sfoDataParamsOffset) |= 0x01;
// If new encryption mode, compute and insert the 1220 hash.
if (encryptmode & 6)
{
/* Enable the hash bit first */