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Aligned memory for encryption to not corrupt nsz files compressed with zstd 1.5.0 and later

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This commit is contained in:
HookedBehemoth 2022-12-15 22:56:39 +01:00
parent 664d9f3c6e
commit b9304c8579
1 changed files with 35 additions and 26 deletions
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35
source/nx/nca_writer.cpp
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@ -179,6 +179,7 @@ public:
processChunk(m_buffer.data(), m_buffer.size());
}
encrypt(m_deflateBuffer.data(), m_deflateBuffer.size(), m_offset);
flush();
return true;
@ -237,11 +238,12 @@ public:
u64 processChunk(const u8* ptr, u64 sz)
{
ZSTD_inBuffer input = { ptr, sz, 0 };
m_deflateBuffer.resize(sz);
m_deflateBuffer.resize(0);
while(sz > 0)
{
const size_t readChunkSz = std::min(sz, buffInSize);
ZSTD_inBuffer input = { ptr, readChunkSz, 0 };
while (input.pos < input.size)
while(input.pos < input.size)
{
ZSTD_outBuffer output = { buffOut, buffOutSize, 0 };
size_t const ret = ZSTD_decompressStream(dctx, &output, &input);
@ -249,26 +251,33 @@ public:
if (ZSTD_isError(ret))
{
LOG_DEBUG("%s\n", ZSTD_getErrorName(ret));
return false;
return 0;
}
append(m_deflateBuffer, (const u8*)buffOut, output.pos);
size_t len = output.pos;
u8* p = (u8*)buffOut;
if (m_deflateBuffer.size() >= 0x1000000) // 16 MB
while(len)
{
const size_t writeChunkSz = std::min(0x1000000 - m_deflateBuffer.size(), len);
append(m_deflateBuffer, p, writeChunkSz);
if(m_deflateBuffer.size() >= 0x1000000)
{
encrypt(m_deflateBuffer.data(), m_deflateBuffer.size(), m_offset);
flush();
}
p += writeChunkSz;
len -= writeChunkSz;
}
}
if (m_deflateBuffer.size())
{
encrypt(m_deflateBuffer.data(), m_deflateBuffer.size(), m_offset);
flush();
sz -= readChunkSz;
ptr += readChunkSz;
}
return 1;
}