mirror of
https://github.com/hrydgard/ppsspp.git
synced 2024-11-24 05:49:58 +00:00
292 lines
8.8 KiB
C++
292 lines
8.8 KiB
C++
// Copyright (C) 2003 Dolphin 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 SVN repository and contact information can be found at
|
|
// http://code.google.com/p/dolphin-emu/
|
|
|
|
#include "ChunkFile.h"
|
|
|
|
PointerWrapSection PointerWrap::Section(const char *title, int ver) {
|
|
return Section(title, ver, ver);
|
|
}
|
|
|
|
PointerWrapSection PointerWrap::Section(const char *title, int minVer, int ver) {
|
|
char marker[16] = {0};
|
|
int foundVersion = ver;
|
|
|
|
strncpy(marker, title, sizeof(marker));
|
|
if (!ExpectVoid(marker, sizeof(marker)))
|
|
{
|
|
// Might be before we added name markers for safety.
|
|
if (foundVersion == 1 && ExpectVoid(&foundVersion, sizeof(foundVersion)))
|
|
DoMarker(title);
|
|
// Wasn't found, but maybe we can still load the state.
|
|
else
|
|
foundVersion = 0;
|
|
}
|
|
else
|
|
Do(foundVersion);
|
|
|
|
if (error == ERROR_FAILURE || foundVersion < minVer || foundVersion > ver) {
|
|
WARN_LOG(COMMON, "Savestate failure: wrong version %d found for %s", foundVersion, title);
|
|
SetError(ERROR_FAILURE);
|
|
return PointerWrapSection(*this, -1, title);
|
|
}
|
|
return PointerWrapSection(*this, foundVersion, title);
|
|
}
|
|
|
|
void PointerWrap::SetError(Error error_) {
|
|
if (error < error_) {
|
|
error = error_;
|
|
}
|
|
if (error > ERROR_WARNING) {
|
|
mode = PointerWrap::MODE_MEASURE;
|
|
}
|
|
}
|
|
|
|
bool PointerWrap::ExpectVoid(void *data, int size) {
|
|
switch (mode) {
|
|
case MODE_READ: if (memcmp(data, *ptr, size) != 0) return false; break;
|
|
case MODE_WRITE: memcpy(*ptr, data, size); break;
|
|
case MODE_MEASURE: break; // MODE_MEASURE - don't need to do anything
|
|
case MODE_VERIFY:
|
|
for (int i = 0; i < size; i++)
|
|
_dbg_assert_msg_(COMMON, ((u8*)data)[i] == (*ptr)[i], "Savestate verification failure: %d (0x%X) (at %p) != %d (0x%X) (at %p).\n", ((u8*)data)[i], ((u8*)data)[i], &((u8*)data)[i], (*ptr)[i], (*ptr)[i], &(*ptr)[i]);
|
|
break;
|
|
default: break; // throw an error?
|
|
}
|
|
(*ptr) += size;
|
|
return true;
|
|
}
|
|
|
|
void PointerWrap::DoVoid(void *data, int size) {
|
|
switch (mode) {
|
|
case MODE_READ: memcpy(data, *ptr, size); break;
|
|
case MODE_WRITE: memcpy(*ptr, data, size); break;
|
|
case MODE_MEASURE: break; // MODE_MEASURE - don't need to do anything
|
|
case MODE_VERIFY:
|
|
for (int i = 0; i < size; i++)
|
|
_dbg_assert_msg_(COMMON, ((u8*)data)[i] == (*ptr)[i], "Savestate verification failure: %d (0x%X) (at %p) != %d (0x%X) (at %p).\n", ((u8*)data)[i], ((u8*)data)[i], &((u8*)data)[i], (*ptr)[i], (*ptr)[i], &(*ptr)[i]);
|
|
break;
|
|
default: break; // throw an error?
|
|
}
|
|
(*ptr) += size;
|
|
}
|
|
|
|
void PointerWrap::Do(std::string &x) {
|
|
int stringLen = (int)x.length() + 1;
|
|
Do(stringLen);
|
|
|
|
switch (mode) {
|
|
case MODE_READ: x = (char*)*ptr; break;
|
|
case MODE_WRITE: memcpy(*ptr, x.c_str(), stringLen); break;
|
|
case MODE_MEASURE: break;
|
|
case MODE_VERIFY: _dbg_assert_msg_(COMMON, !strcmp(x.c_str(), (char*)*ptr), "Savestate verification failure: \"%s\" != \"%s\" (at %p).\n", x.c_str(), (char*)*ptr, ptr); break;
|
|
}
|
|
(*ptr) += stringLen;
|
|
}
|
|
|
|
void PointerWrap::Do(std::wstring &x) {
|
|
int stringLen = sizeof(wchar_t)*((int)x.length() + 1);
|
|
Do(stringLen);
|
|
|
|
switch (mode) {
|
|
case MODE_READ: x = (wchar_t*)*ptr; break;
|
|
case MODE_WRITE: memcpy(*ptr, x.c_str(), stringLen); break;
|
|
case MODE_MEASURE: break;
|
|
case MODE_VERIFY: _dbg_assert_msg_(COMMON, x == (wchar_t*)*ptr, "Savestate verification failure: \"%ls\" != \"%ls\" (at %p).\n", x.c_str(), (wchar_t*)*ptr, ptr); break;
|
|
}
|
|
(*ptr) += stringLen;
|
|
}
|
|
|
|
struct standard_tm {
|
|
int tm_sec;
|
|
int tm_min;
|
|
int tm_hour;
|
|
int tm_mday;
|
|
int tm_mon;
|
|
int tm_year;
|
|
int tm_wday;
|
|
int tm_yday;
|
|
int tm_isdst;
|
|
};
|
|
|
|
void PointerWrap::Do(tm &t) {
|
|
// We savestate this separately because some platforms use extra data at the end.
|
|
// However, old files may have the native tm in them.
|
|
// Since the first value in the struct is 0-59, we save a funny value and check for it.
|
|
// If our funny value ('tm' 0x1337) exists, it's a new version savestate.
|
|
int funnyValue = 0x13376D74;
|
|
if (ExpectVoid(&funnyValue, sizeof(funnyValue))) {
|
|
standard_tm stm;
|
|
if (mode == MODE_READ) {
|
|
// Null out the extra members, e.g. tm_gmtoff or tm_zone.
|
|
memset(&t, 0, sizeof(t));
|
|
} else {
|
|
memcpy(&stm, &t, sizeof(stm));
|
|
}
|
|
|
|
DoVoid((void *)&stm, sizeof(stm));
|
|
memcpy(&t, &stm, sizeof(stm));
|
|
} else {
|
|
DoVoid((void *)&t, sizeof(t));
|
|
}
|
|
}
|
|
|
|
void PointerWrap::DoMarker(const char *prevName, u32 arbitraryNumber) {
|
|
u32 cookie = arbitraryNumber;
|
|
Do(cookie);
|
|
if (mode == PointerWrap::MODE_READ && cookie != arbitraryNumber) {
|
|
PanicAlertT("Error: After \"%s\", found %d (0x%X) instead of save marker %d (0x%X). Aborting savestate load...", prevName, cookie, cookie, arbitraryNumber, arbitraryNumber);
|
|
SetError(ERROR_FAILURE);
|
|
}
|
|
}
|
|
|
|
PointerWrapSection::~PointerWrapSection() {
|
|
if (ver_ > 0) {
|
|
p_.DoMarker(title_);
|
|
}
|
|
}
|
|
|
|
CChunkFileReader::Error CChunkFileReader::LoadFile(const std::string& _rFilename, int _Revision, const char *_VersionString, u8 *&_buffer, size_t &sz, std::string *_failureReason) {
|
|
INFO_LOG(COMMON, "ChunkReader: Loading %s" , _rFilename.c_str());
|
|
|
|
if (!File::Exists(_rFilename)) {
|
|
*_failureReason = "LoadStateDoesntExist";
|
|
ERROR_LOG(COMMON, "ChunkReader: File doesn't exist");
|
|
return ERROR_BAD_FILE;
|
|
}
|
|
|
|
// Check file size
|
|
const u64 fileSize = File::GetSize(_rFilename);
|
|
static const u64 headerSize = sizeof(SChunkHeader);
|
|
if (fileSize < headerSize)
|
|
{
|
|
ERROR_LOG(COMMON, "ChunkReader: File too small");
|
|
return ERROR_BAD_FILE;
|
|
}
|
|
|
|
File::IOFile pFile(_rFilename, "rb");
|
|
if (!pFile)
|
|
{
|
|
ERROR_LOG(COMMON, "ChunkReader: Can't open file for reading");
|
|
return ERROR_BAD_FILE;
|
|
}
|
|
|
|
// read the header
|
|
SChunkHeader header;
|
|
if (!pFile.ReadArray(&header, 1))
|
|
{
|
|
ERROR_LOG(COMMON, "ChunkReader: Bad header size");
|
|
return ERROR_BAD_FILE;
|
|
}
|
|
|
|
// Check revision
|
|
if (header.Revision != _Revision)
|
|
{
|
|
ERROR_LOG(COMMON, "ChunkReader: Wrong file revision, got %d expected %d", header.Revision, _Revision);
|
|
return ERROR_BAD_FILE;
|
|
}
|
|
|
|
// get size
|
|
sz = (int)(fileSize - headerSize);
|
|
if (header.ExpectedSize != sz)
|
|
{
|
|
ERROR_LOG(COMMON, "ChunkReader: Bad file size, got %u expected %u", (u32)sz, header.ExpectedSize);
|
|
return ERROR_BAD_FILE;
|
|
}
|
|
|
|
// read the state
|
|
u8 *buffer = new u8[sz];
|
|
if (!pFile.ReadBytes(buffer, sz))
|
|
{
|
|
ERROR_LOG(COMMON, "ChunkReader: Error reading file");
|
|
return ERROR_BAD_FILE;
|
|
}
|
|
|
|
_buffer = buffer;
|
|
if (header.Compress) {
|
|
u8 *uncomp_buffer = new u8[header.UncompressedSize];
|
|
size_t uncomp_size = header.UncompressedSize;
|
|
snappy_uncompress((const char *)buffer, sz, (char *)uncomp_buffer, &uncomp_size);
|
|
if ((u32)uncomp_size != header.UncompressedSize) {
|
|
ERROR_LOG(COMMON, "Size mismatch: file: %u calc: %u", header.UncompressedSize, (u32)uncomp_size);
|
|
return ERROR_BAD_FILE;
|
|
}
|
|
_buffer = uncomp_buffer;
|
|
sz = uncomp_size;
|
|
delete [] buffer;
|
|
}
|
|
|
|
return ERROR_NONE;
|
|
}
|
|
|
|
CChunkFileReader::Error CChunkFileReader::SaveFile(const std::string& _rFilename, int _Revision, const char *_VersionString, u8 *buffer, size_t sz) {
|
|
INFO_LOG(COMMON, "ChunkReader: Writing %s" , _rFilename.c_str());
|
|
|
|
File::IOFile pFile(_rFilename, "wb");
|
|
if (!pFile)
|
|
{
|
|
ERROR_LOG(COMMON, "ChunkReader: Error opening file for write");
|
|
return ERROR_BAD_FILE;
|
|
}
|
|
|
|
bool compress = true;
|
|
|
|
// Create header
|
|
SChunkHeader header;
|
|
header.Compress = compress ? 1 : 0;
|
|
header.Revision = _Revision;
|
|
header.ExpectedSize = (u32)sz;
|
|
header.UncompressedSize = (u32)sz;
|
|
strncpy(header.GitVersion, _VersionString, 32);
|
|
header.GitVersion[31] = '\0';
|
|
|
|
// Write to file
|
|
if (compress) {
|
|
size_t comp_len = snappy_max_compressed_length(sz);
|
|
u8 *compressed_buffer = new u8[comp_len];
|
|
snappy_compress((const char *)buffer, sz, (char *)compressed_buffer, &comp_len);
|
|
delete [] buffer;
|
|
header.ExpectedSize = (u32)comp_len;
|
|
if (!pFile.WriteArray(&header, 1))
|
|
{
|
|
ERROR_LOG(COMMON, "ChunkReader: Failed writing header");
|
|
return ERROR_BAD_FILE;
|
|
}
|
|
if (!pFile.WriteBytes(&compressed_buffer[0], comp_len)) {
|
|
ERROR_LOG(COMMON, "ChunkReader: Failed writing compressed data");
|
|
return ERROR_BAD_FILE;
|
|
} else {
|
|
INFO_LOG(COMMON, "Savestate: Compressed %i bytes into %i", (int)sz, (int)comp_len);
|
|
}
|
|
delete [] compressed_buffer;
|
|
} else {
|
|
if (!pFile.WriteArray(&header, 1))
|
|
{
|
|
ERROR_LOG(COMMON, "ChunkReader: Failed writing header");
|
|
return ERROR_BAD_FILE;
|
|
}
|
|
if (!pFile.WriteBytes(&buffer[0], sz))
|
|
{
|
|
ERROR_LOG(COMMON, "ChunkReader: Failed writing data");
|
|
return ERROR_BAD_FILE;
|
|
}
|
|
delete [] buffer;
|
|
}
|
|
|
|
INFO_LOG(COMMON, "ChunkReader: Done writing %s", _rFilename.c_str());
|
|
return ERROR_NONE;
|
|
}
|