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VolumeWiiCrypted: Turn m_dataOffset into a constant

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This commit is contained in:
JosJuice 2015-04-21 11:33:51 +02:00
parent 405643b902
commit 74d84c5af2
2 changed files with 6 additions and 5 deletions
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10
Source/Core/DiscIO/VolumeWiiCrypted.cpp
View File

@ -29,10 +29,12 @@
namespace DiscIO namespace DiscIO
{ {
constexpr u64 PARTITION_DATA_OFFSET = 0x20000;
CVolumeWiiCrypted::CVolumeWiiCrypted(std::unique_ptr<IBlobReader> reader, u64 _VolumeOffset, CVolumeWiiCrypted::CVolumeWiiCrypted(std::unique_ptr<IBlobReader> reader, u64 _VolumeOffset,
const unsigned char* _pVolumeKey) const unsigned char* _pVolumeKey)
: m_pReader(std::move(reader)), m_AES_ctx(std::make_unique<mbedtls_aes_context>()), : m_pReader(std::move(reader)), m_AES_ctx(std::make_unique<mbedtls_aes_context>()),
m_VolumeOffset(_VolumeOffset), m_dataOffset(0x20000), m_last_decrypted_block(-1) m_VolumeOffset(_VolumeOffset), m_last_decrypted_block(-1)
{ {
_assert_(m_pReader); _assert_(m_pReader);
@ -63,7 +65,7 @@ bool CVolumeWiiCrypted::Read(u64 _ReadOffset, u64 _Length, u8* _pBuffer, bool de
{ {
// Calculate offsets // Calculate offsets
u64 block_offset_on_disc = u64 block_offset_on_disc =
m_VolumeOffset + m_dataOffset + _ReadOffset / BLOCK_DATA_SIZE * BLOCK_TOTAL_SIZE; _ReadOffset / BLOCK_DATA_SIZE * BLOCK_TOTAL_SIZE + m_VolumeOffset + PARTITION_DATA_OFFSET;
u64 data_offset_in_block = _ReadOffset % BLOCK_DATA_SIZE; u64 data_offset_in_block = _ReadOffset % BLOCK_DATA_SIZE;
if (m_last_decrypted_block != block_offset_on_disc) if (m_last_decrypted_block != block_offset_on_disc)
@ -143,7 +145,7 @@ IOS::ES::TMDReader CVolumeWiiCrypted::GetTMD() const
u64 CVolumeWiiCrypted::PartitionOffsetToRawOffset(u64 offset) const u64 CVolumeWiiCrypted::PartitionOffsetToRawOffset(u64 offset) const
{ {
return m_VolumeOffset + m_dataOffset + (offset / BLOCK_DATA_SIZE * BLOCK_TOTAL_SIZE) + return m_VolumeOffset + PARTITION_DATA_OFFSET + (offset / BLOCK_DATA_SIZE * BLOCK_TOTAL_SIZE) +
(offset % BLOCK_DATA_SIZE); (offset % BLOCK_DATA_SIZE);
} }
@ -286,7 +288,7 @@ bool CVolumeWiiCrypted::CheckIntegrity() const
u32 nClusters = (u32)(partDataSize / 0x8000); u32 nClusters = (u32)(partDataSize / 0x8000);
for (u32 clusterID = 0; clusterID < nClusters; ++clusterID) for (u32 clusterID = 0; clusterID < nClusters; ++clusterID)
{ {
u64 clusterOff = m_VolumeOffset + m_dataOffset + (u64)clusterID * 0x8000; u64 clusterOff = m_VolumeOffset + PARTITION_DATA_OFFSET + (u64)clusterID * 0x8000;
// Read and decrypt the cluster metadata // Read and decrypt the cluster metadata
u8 clusterMDCrypted[0x400]; u8 clusterMDCrypted[0x400];

1
Source/Core/DiscIO/VolumeWiiCrypted.h
View File

@ -66,7 +66,6 @@ private:
std::unique_ptr<mbedtls_aes_context> m_AES_ctx; std::unique_ptr<mbedtls_aes_context> m_AES_ctx;
u64 m_VolumeOffset; u64 m_VolumeOffset;
u64 m_dataOffset;
mutable u64 m_last_decrypted_block; mutable u64 m_last_decrypted_block;
mutable u8 m_last_decrypted_block_data[BLOCK_DATA_SIZE]; mutable u8 m_last_decrypted_block_data[BLOCK_DATA_SIZE];