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authorJosJuice <josjuice@gmail.com>2017-06-06 11:49:01 +0200
committerJosJuice <josjuice@gmail.com>2017-06-06 12:31:59 +0200
commitb2af07a7b70c7c22d2c7b180d5846136d1fa1f77 (patch)
treefcc7f9c8ddedb6c1570be38b4d95b9695de49fbc /Source/Core/DiscIO/VolumeWiiCrypted.cpp
parent1113b131f209c6b0c8095c4c8155371ae2cb9de9 (diff)
DiscIO: Remove C/I/S prefixes from class names
These prefixes were inconsistent with the rest of Dolphin. I'm also renaming VolumeWiiCrypted to VolumeWii because of 1113b13.
Diffstat (limited to 'Source/Core/DiscIO/VolumeWiiCrypted.cpp')
-rw-r--r--Source/Core/DiscIO/VolumeWiiCrypted.cpp401
1 files changed, 0 insertions, 401 deletions
diff --git a/Source/Core/DiscIO/VolumeWiiCrypted.cpp b/Source/Core/DiscIO/VolumeWiiCrypted.cpp
deleted file mode 100644
index ad03406caa..0000000000
--- a/Source/Core/DiscIO/VolumeWiiCrypted.cpp
+++ /dev/null
@@ -1,401 +0,0 @@
-// Copyright 2008 Dolphin Emulator Project
-// Licensed under GPLv2+
-// Refer to the license.txt file included.
-
-#include "DiscIO/VolumeWiiCrypted.h"
-
-#include <algorithm>
-#include <cstddef>
-#include <cstring>
-#include <map>
-#include <mbedtls/aes.h>
-#include <mbedtls/sha1.h>
-#include <memory>
-#include <optional>
-#include <string>
-#include <utility>
-#include <vector>
-
-#include "Common/Assert.h"
-#include "Common/CommonTypes.h"
-#include "Common/Logging/Log.h"
-#include "Common/MsgHandler.h"
-#include "Common/Swap.h"
-
-#include "DiscIO/Blob.h"
-#include "DiscIO/Enums.h"
-#include "DiscIO/Filesystem.h"
-#include "DiscIO/Volume.h"
-
-namespace DiscIO
-{
-constexpr u64 PARTITION_DATA_OFFSET = 0x20000;
-
-CVolumeWiiCrypted::CVolumeWiiCrypted(std::unique_ptr<IBlobReader> reader)
- : m_pReader(std::move(reader)), m_game_partition(PARTITION_NONE), m_last_decrypted_block(-1)
-{
- _assert_(m_pReader);
-
- if (m_pReader->ReadSwapped<u32>(0x60) != u32(0))
- {
- // No partitions - just read unencrypted data like with a GC disc
- return;
- }
-
- // Get tickets, TMDs, and decryption keys for all partitions
- for (u32 partition_group = 0; partition_group < 4; ++partition_group)
- {
- const std::optional<u32> number_of_partitions =
- m_pReader->ReadSwapped<u32>(0x40000 + (partition_group * 8));
- if (!number_of_partitions)
- continue;
-
- std::optional<u32> read_buffer = m_pReader->ReadSwapped<u32>(0x40000 + (partition_group * 8) + 4);
- if (!read_buffer)
- continue;
- const u64 partition_table_offset = static_cast<u64>(*read_buffer) << 2;
-
- for (u32 i = 0; i < number_of_partitions; i++)
- {
- // Read the partition offset
- read_buffer = m_pReader->ReadSwapped<u32>(partition_table_offset + (i * 8));
- if (!read_buffer)
- continue;
- const u64 partition_offset = static_cast<u64>(*read_buffer) << 2;
-
- // Set m_game_partition if this is the game partition
- if (m_game_partition == PARTITION_NONE)
- {
- const std::optional<u32> partition_type =
- m_pReader->ReadSwapped<u32>(partition_table_offset + (i * 8) + 4);
- if (partition_type == u32(0))
- m_game_partition = Partition(partition_offset);
- }
-
- // Read ticket
- std::vector<u8> ticket_buffer(sizeof(IOS::ES::Ticket));
- if (!m_pReader->Read(partition_offset, ticket_buffer.size(), ticket_buffer.data()))
- continue;
- IOS::ES::TicketReader ticket{std::move(ticket_buffer)};
- if (!ticket.IsValid())
- continue;
-
- // Read TMD
- const std::optional<u32> tmd_size = m_pReader->ReadSwapped<u32>(partition_offset + 0x2a4);
- std::optional<u32> tmd_address = m_pReader->ReadSwapped<u32>(partition_offset + 0x2a8);
- if (!tmd_size || !tmd_address)
- continue;
- *tmd_address <<= 2;
- if (!IOS::ES::IsValidTMDSize(*tmd_size))
- {
- // This check is normally done by ES in ES_DiVerify, but that would happen too late
- // (after allocating the buffer), so we do the check here.
- PanicAlert("Invalid TMD size");
- continue;
- }
- std::vector<u8> tmd_buffer(*tmd_size);
- if (!m_pReader->Read(partition_offset + *tmd_address, *tmd_size, tmd_buffer.data()))
- continue;
- IOS::ES::TMDReader tmd{std::move(tmd_buffer)};
-
- // Get the decryption key
- const std::vector<u8> key = ticket.GetTitleKey();
- if (key.size() != 16)
- continue;
- std::unique_ptr<mbedtls_aes_context> aes_context = std::make_unique<mbedtls_aes_context>();
- mbedtls_aes_setkey_dec(aes_context.get(), key.data(), 128);
-
- // We've read everything. Time to store it! (The reason we don't store anything
- // earlier is because we want to be able to skip adding the partition if an error occurs.)
- const Partition partition(partition_offset);
- m_partition_keys[partition] = std::move(aes_context);
- m_partition_tickets[partition] = std::move(ticket);
- m_partition_tmds[partition] = std::move(tmd);
- }
- }
-}
-
-CVolumeWiiCrypted::~CVolumeWiiCrypted()
-{
-}
-
-bool CVolumeWiiCrypted::Read(u64 _ReadOffset, u64 _Length, u8* _pBuffer,
- const Partition& partition) const
-{
- if (partition == PARTITION_NONE)
- return m_pReader->Read(_ReadOffset, _Length, _pBuffer);
-
- // Get the decryption key for the partition
- auto it = m_partition_keys.find(partition);
- if (it == m_partition_keys.end())
- return false;
- mbedtls_aes_context* aes_context = it->second.get();
-
- std::vector<u8> read_buffer(BLOCK_TOTAL_SIZE);
- while (_Length > 0)
- {
- // Calculate offsets
- u64 block_offset_on_disc =
- partition.offset + PARTITION_DATA_OFFSET + _ReadOffset / BLOCK_DATA_SIZE * BLOCK_TOTAL_SIZE;
- u64 data_offset_in_block = _ReadOffset % BLOCK_DATA_SIZE;
-
- if (m_last_decrypted_block != block_offset_on_disc)
- {
- // Read the current block
- if (!m_pReader->Read(block_offset_on_disc, BLOCK_TOTAL_SIZE, read_buffer.data()))
- return false;
-
- // Decrypt the block's data.
- // 0x3D0 - 0x3DF in read_buffer will be overwritten,
- // but that won't affect anything, because we won't
- // use the content of read_buffer anymore after this
- mbedtls_aes_crypt_cbc(aes_context, MBEDTLS_AES_DECRYPT, BLOCK_DATA_SIZE, &read_buffer[0x3D0],
- &read_buffer[BLOCK_HEADER_SIZE], m_last_decrypted_block_data);
- m_last_decrypted_block = block_offset_on_disc;
-
- // The only thing we currently use from the 0x000 - 0x3FF part
- // of the block is the IV (at 0x3D0), but it also contains SHA-1
- // hashes that IOS uses to check that discs aren't tampered with.
- // http://wiibrew.org/wiki/Wii_Disc#Encrypted
- }
-
- // Copy the decrypted data
- u64 copy_size = std::min(_Length, BLOCK_DATA_SIZE - data_offset_in_block);
- memcpy(_pBuffer, &m_last_decrypted_block_data[data_offset_in_block],
- static_cast<size_t>(copy_size));
-
- // Update offsets
- _Length -= copy_size;
- _pBuffer += copy_size;
- _ReadOffset += copy_size;
- }
-
- return true;
-}
-
-std::vector<Partition> CVolumeWiiCrypted::GetPartitions() const
-{
- std::vector<Partition> partitions;
- for (const auto& pair : m_partition_keys)
- partitions.push_back(pair.first);
- return partitions;
-}
-
-Partition CVolumeWiiCrypted::GetGamePartition() const
-{
- return m_game_partition;
-}
-
-std::optional<u64> CVolumeWiiCrypted::GetTitleID(const Partition& partition) const
-{
- const IOS::ES::TicketReader& ticket = GetTicket(partition);
- if (!ticket.IsValid())
- return {};
- return ticket.GetTitleId();
-}
-
-const IOS::ES::TicketReader& CVolumeWiiCrypted::GetTicket(const Partition& partition) const
-{
- auto it = m_partition_tickets.find(partition);
- return it != m_partition_tickets.end() ? it->second : INVALID_TICKET;
-}
-
-const IOS::ES::TMDReader& CVolumeWiiCrypted::GetTMD(const Partition& partition) const
-{
- auto it = m_partition_tmds.find(partition);
- return it != m_partition_tmds.end() ? it->second : INVALID_TMD;
-}
-
-u64 CVolumeWiiCrypted::PartitionOffsetToRawOffset(u64 offset, const Partition& partition)
-{
- if (partition == PARTITION_NONE)
- return offset;
-
- return partition.offset + PARTITION_DATA_OFFSET + (offset / BLOCK_DATA_SIZE * BLOCK_TOTAL_SIZE) +
- (offset % BLOCK_DATA_SIZE);
-}
-
-std::string CVolumeWiiCrypted::GetGameID(const Partition& partition) const
-{
- char ID[6];
-
- if (!Read(0, 6, (u8*)ID, partition))
- return std::string();
-
- return DecodeString(ID);
-}
-
-Region CVolumeWiiCrypted::GetRegion() const
-{
- const std::optional<u32> region_code = m_pReader->ReadSwapped<u32>(0x4E000);
- return region_code ? static_cast<Region>(*region_code) : Region::UNKNOWN_REGION;
-}
-
-Country CVolumeWiiCrypted::GetCountry(const Partition& partition) const
-{
- // The 0 that we use as a default value is mapped to COUNTRY_UNKNOWN and UNKNOWN_REGION
- u8 country_byte = ReadSwapped<u8>(3, partition).value_or(0);
- const Region region = GetRegion();
-
- if (RegionSwitchWii(country_byte) != region)
- return TypicalCountryForRegion(region);
-
- return CountrySwitch(country_byte);
-}
-
-std::string CVolumeWiiCrypted::GetMakerID(const Partition& partition) const
-{
- char makerID[2];
-
- if (!Read(0x4, 0x2, (u8*)&makerID, partition))
- return std::string();
-
- return DecodeString(makerID);
-}
-
-std::optional<u16> CVolumeWiiCrypted::GetRevision(const Partition& partition) const
-{
- std::optional<u8> revision = ReadSwapped<u8>(7, partition);
- return revision ? *revision : std::optional<u16>();
-}
-
-std::string CVolumeWiiCrypted::GetInternalName(const Partition& partition) const
-{
- char name_buffer[0x60];
- if (Read(0x20, 0x60, (u8*)&name_buffer, partition))
- return DecodeString(name_buffer);
-
- return "";
-}
-
-std::map<Language, std::string> CVolumeWiiCrypted::GetLongNames() const
-{
- std::unique_ptr<IFileSystem> file_system(CreateFileSystem(this, GetGamePartition()));
- if (!file_system)
- return {};
-
- std::vector<u8> opening_bnr(NAMES_TOTAL_BYTES);
- size_t size = file_system->ReadFile("opening.bnr", opening_bnr.data(), opening_bnr.size(), 0x5C);
- opening_bnr.resize(size);
- return ReadWiiNames(opening_bnr);
-}
-
-std::vector<u32> CVolumeWiiCrypted::GetBanner(int* width, int* height) const
-{
- *width = 0;
- *height = 0;
-
- const std::optional<u64> title_id = GetTitleID(GetGamePartition());
- if (!title_id)
- return std::vector<u32>();
-
- return GetWiiBanner(width, height, *title_id);
-}
-
-std::string CVolumeWiiCrypted::GetApploaderDate(const Partition& partition) const
-{
- char date[16];
-
- if (!Read(0x2440, 0x10, (u8*)&date, partition))
- return std::string();
-
- return DecodeString(date);
-}
-
-Platform CVolumeWiiCrypted::GetVolumeType() const
-{
- return Platform::WII_DISC;
-}
-
-std::optional<u8> CVolumeWiiCrypted::GetDiscNumber(const Partition& partition) const
-{
- return ReadSwapped<u8>(6, partition);
-}
-
-BlobType CVolumeWiiCrypted::GetBlobType() const
-{
- return m_pReader->GetBlobType();
-}
-
-u64 CVolumeWiiCrypted::GetSize() const
-{
- return m_pReader->GetDataSize();
-}
-
-u64 CVolumeWiiCrypted::GetRawSize() const
-{
- return m_pReader->GetRawSize();
-}
-
-bool CVolumeWiiCrypted::CheckIntegrity(const Partition& partition) const
-{
- // Get the decryption key for the partition
- auto it = m_partition_keys.find(partition);
- if (it == m_partition_keys.end())
- return false;
- mbedtls_aes_context* aes_context = it->second.get();
-
- // Get partition data size
- u32 partSizeDiv4;
- m_pReader->Read(partition.offset + 0x2BC, 4, (u8*)&partSizeDiv4);
- u64 partDataSize = (u64)Common::swap32(partSizeDiv4) * 4;
-
- u32 nClusters = (u32)(partDataSize / 0x8000);
- for (u32 clusterID = 0; clusterID < nClusters; ++clusterID)
- {
- u64 clusterOff = partition.offset + PARTITION_DATA_OFFSET + (u64)clusterID * 0x8000;
-
- // Read and decrypt the cluster metadata
- u8 clusterMDCrypted[0x400];
- u8 clusterMD[0x400];
- u8 IV[16] = {0};
- if (!m_pReader->Read(clusterOff, 0x400, clusterMDCrypted))
- {
- WARN_LOG(DISCIO, "Integrity Check: fail at cluster %d: could not read metadata", clusterID);
- return false;
- }
- mbedtls_aes_crypt_cbc(aes_context, MBEDTLS_AES_DECRYPT, 0x400, IV, clusterMDCrypted, clusterMD);
-
- // Some clusters have invalid data and metadata because they aren't
- // meant to be read by the game (for example, holes between files). To
- // try to avoid reporting errors because of these clusters, we check
- // the 0x00 paddings in the metadata.
- //
- // This may cause some false negatives though: some bad clusters may be
- // skipped because they are *too* bad and are not even recognized as
- // valid clusters. To be improved.
- bool meaningless = false;
- for (u32 idx = 0x26C; idx < 0x280; ++idx)
- if (clusterMD[idx] != 0)
- meaningless = true;
-
- if (meaningless)
- continue;
-
- u8 clusterData[0x7C00];
- if (!Read((u64)clusterID * 0x7C00, 0x7C00, clusterData, partition))
- {
- WARN_LOG(DISCIO, "Integrity Check: fail at cluster %d: could not read data", clusterID);
- return false;
- }
-
- for (u32 hashID = 0; hashID < 31; ++hashID)
- {
- u8 hash[20];
-
- mbedtls_sha1(clusterData + hashID * 0x400, 0x400, hash);
-
- // Note that we do not use strncmp here
- if (memcmp(hash, clusterMD + hashID * 20, 20))
- {
- WARN_LOG(DISCIO, "Integrity Check: fail at cluster %d: hash %d is invalid", clusterID,
- hashID);
- return false;
- }
- }
- }
-
- return true;
-}
-
-} // namespace