s32 sdata_unpack(const std::string& packed_file, const std::string& unpacked_file)
{
std::shared_ptr<vfsFileBase> packed_stream(Emu.GetVFS().OpenFile(packed_file, fom::read));
std::shared_ptr<vfsFileBase> unpacked_stream(Emu.GetVFS().OpenFile(unpacked_file, fom::write | fom::create | fom::trunc));
if (!packed_stream || !packed_stream->IsOpened())
{
cellFs.Error("File '%s' not found!", packed_file.c_str());
return CELL_ENOENT;
}
if (!unpacked_stream || !unpacked_stream->IsOpened())
{
cellFs.Error("File '%s' couldn't be created!", unpacked_file.c_str());
return CELL_ENOENT;
}
char buffer[10200];
packed_stream->Read(buffer, 256);
u32 format = *(be_t<u32>*)&buffer[0];
if (format != 0x4E504400) // "NPD\x00"
{
cellFs.Error("Illegal format. Expected 0x4E504400, but got 0x%08x", format);
return CELL_EFSSPECIFIC;
}
u32 version = *(be_t<u32>*)&buffer[0x04];
u32 flags = *(be_t<u32>*)&buffer[0x80];
u32 blockSize = *(be_t<u32>*)&buffer[0x84];
u64 filesizeOutput = *(be_t<u64>*)&buffer[0x88];
u64 filesizeInput = packed_stream->GetSize();
u32 blockCount = (u32)((filesizeOutput + blockSize - 1) / blockSize);
// SDATA file is compressed
if (flags & 0x1)
{
cellFs.Warning("cellFsSdataOpen: Compressed SDATA files are not supported yet.");
return CELL_EFSSPECIFIC;
}
// SDATA file is NOT compressed
else
{
u32 t1 = (flags & 0x20) ? 0x20 : 0x10;
u32 startOffset = (blockCount * t1) + 0x100;
u64 filesizeTmp = (filesizeOutput + 0xF) & 0xFFFFFFF0 + startOffset;
if (!sdata_check(version, flags, filesizeInput, filesizeTmp))
{
cellFs.Error("cellFsSdataOpen: Wrong header information.");
return CELL_EFSSPECIFIC;
}
if (flags & 0x20)
packed_stream->Seek(0x100);
else
packed_stream->Seek(startOffset);
for (u32 i = 0; i < blockCount; i++)
{
if (flags & 0x20)
packed_stream->Seek(packed_stream->Tell() + t1);
if (!(blockCount - i - 1))
blockSize = (u32)(filesizeOutput - i * blockSize);
packed_stream->Read(buffer + 256, blockSize);
unpacked_stream->Write(buffer + 256, blockSize);
}
}
return CELL_OK;
}
s32 sdata_unpack(const std::string& packed_file, const std::string& unpacked_file)
{
fs::file packed_stream(vfs::get(packed_file));
fs::file unpacked_stream(vfs::get(unpacked_file), fs::rewrite);
if (!packed_stream)
{
cellFs.error("File '%s' not found!", packed_file);
return CELL_ENOENT;
}
if (!unpacked_stream)
{
cellFs.error("File '%s' couldn't be created!", unpacked_file);
return CELL_ENOENT;
}
char buffer[10200];
packed_stream.read(buffer, 256);
u32 format = *(be_t<u32>*)&buffer[0];
if (format != 0x4E504400) // "NPD\x00"
{
cellFs.error("Illegal format. Expected 0x4E504400, but got 0x%08x", format);
return CELL_EFSSPECIFIC;
}
u32 version = *(be_t<u32>*)&buffer[0x04];
u32 flags = *(be_t<u32>*)&buffer[0x80];
u32 blockSize = *(be_t<u32>*)&buffer[0x84];
u64 filesizeOutput = *(be_t<u64>*)&buffer[0x88];
u64 filesizeInput = packed_stream.size();
u32 blockCount = (u32)((filesizeOutput + blockSize - 1) / blockSize);
// SDATA file is compressed
if (flags & 0x1)
{
cellFs.warning("cellFsSdataOpen: Compressed SDATA files are not supported yet.");
return CELL_EFSSPECIFIC;
}
// SDATA file is NOT compressed
else
{
u32 t1 = (flags & 0x20) ? 0x20 : 0x10;
u32 startOffset = (blockCount * t1) + 0x100;
u64 filesizeTmp = (filesizeOutput + 0xF) & 0xFFFFFFF0 + startOffset;
if (!sdata_check(version, flags, filesizeInput, filesizeTmp))
{
cellFs.error("cellFsSdataOpen: Wrong header information.");
return CELL_EFSSPECIFIC;
}
if (flags & 0x20)
{
packed_stream.seek(0x100);
}
else
{
packed_stream.seek(startOffset);
}
for (u32 i = 0; i < blockCount; i++)
{
if (flags & 0x20)
{
packed_stream.seek(t1, fs::seek_cur);
}
if (!(blockCount - i - 1))
{
blockSize = (u32)(filesizeOutput - i * blockSize);
}
packed_stream.read(buffer + 256, blockSize);
unpacked_stream.write(buffer + 256, blockSize);
}
}
return CELL_OK;
}
