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VolumeWiiCrypted: Use constant naming style for constants

This commit is contained in:
JosJuice 2017-02-10 16:56:40 +01:00
parent fb2098917b
commit c96bcace2f
2 changed files with 12 additions and 12 deletions
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16
Source/Core/DiscIO/VolumeWiiCrypted.cpp
View File

@ -60,26 +60,26 @@ bool CVolumeWiiCrypted::Read(u64 _ReadOffset, u64 _Length, u8* _pBuffer, bool de
FileMon::FindFilename(_ReadOffset); FileMon::FindFilename(_ReadOffset);
std::vector<u8> read_buffer(s_block_total_size); std::vector<u8> read_buffer(BLOCK_TOTAL_SIZE);
while (_Length > 0) while (_Length > 0)
{ {
// Calculate block offset // Calculate block offset
u64 Block = _ReadOffset / s_block_data_size; u64 Block = _ReadOffset / BLOCK_DATA_SIZE;
u64 Offset = _ReadOffset % s_block_data_size; u64 Offset = _ReadOffset % BLOCK_DATA_SIZE;
if (m_LastDecryptedBlockOffset != Block) if (m_LastDecryptedBlockOffset != Block)
{ {
// Read the current block // Read the current block
if (!m_pReader->Read(m_VolumeOffset + m_dataOffset + Block * s_block_total_size, if (!m_pReader->Read(m_VolumeOffset + m_dataOffset + Block * BLOCK_TOTAL_SIZE,
s_block_total_size, read_buffer.data())) BLOCK_TOTAL_SIZE, read_buffer.data()))
return false; return false;
// Decrypt the block's data. // Decrypt the block's data.
// 0x3D0 - 0x3DF in m_pBuffer will be overwritten, // 0x3D0 - 0x3DF in m_pBuffer will be overwritten,
// but that won't affect anything, because we won't // but that won't affect anything, because we won't
// use the content of m_pBuffer anymore after this // use the content of m_pBuffer anymore after this
mbedtls_aes_crypt_cbc(m_AES_ctx.get(), MBEDTLS_AES_DECRYPT, s_block_data_size, mbedtls_aes_crypt_cbc(m_AES_ctx.get(), MBEDTLS_AES_DECRYPT, BLOCK_DATA_SIZE,
&read_buffer[0x3D0], &read_buffer[s_block_header_size], &read_buffer[0x3D0], &read_buffer[BLOCK_HEADER_SIZE],
m_LastDecryptedBlock); m_LastDecryptedBlock);
m_LastDecryptedBlockOffset = Block; m_LastDecryptedBlockOffset = Block;
@ -90,7 +90,7 @@ bool CVolumeWiiCrypted::Read(u64 _ReadOffset, u64 _Length, u8* _pBuffer, bool de
} }
// Copy the decrypted data // Copy the decrypted data
u64 MaxSizeToCopy = s_block_data_size - Offset; u64 MaxSizeToCopy = BLOCK_DATA_SIZE - Offset;
u64 CopySize = (_Length > MaxSizeToCopy) ? MaxSizeToCopy : _Length; u64 CopySize = (_Length > MaxSizeToCopy) ? MaxSizeToCopy : _Length;
memcpy(_pBuffer, &m_LastDecryptedBlock[Offset], (size_t)CopySize); memcpy(_pBuffer, &m_LastDecryptedBlock[Offset], (size_t)CopySize);

8
Source/Core/DiscIO/VolumeWiiCrypted.h
View File

@ -54,9 +54,9 @@ public:
u64 GetRawSize() const override; u64 GetRawSize() const override;
private: private:
static const unsigned int s_block_header_size = 0x0400; static constexpr unsigned int BLOCK_HEADER_SIZE = 0x0400;
static const unsigned int s_block_data_size = 0x7C00; static constexpr unsigned int BLOCK_DATA_SIZE = 0x7C00;
static const unsigned int s_block_total_size = s_block_header_size + s_block_data_size; static constexpr unsigned int BLOCK_TOTAL_SIZE = BLOCK_HEADER_SIZE + BLOCK_DATA_SIZE;
std::unique_ptr<IBlobReader> m_pReader; std::unique_ptr<IBlobReader> m_pReader;
std::unique_ptr<mbedtls_aes_context> m_AES_ctx; std::unique_ptr<mbedtls_aes_context> m_AES_ctx;
@ -65,7 +65,7 @@ private:
u64 m_dataOffset; u64 m_dataOffset;
mutable u64 m_LastDecryptedBlockOffset; mutable u64 m_LastDecryptedBlockOffset;
mutable unsigned char m_LastDecryptedBlock[s_block_data_size]; mutable unsigned char m_LastDecryptedBlock[BLOCK_DATA_SIZE];
}; };
} // namespace } // namespace