bool VolumeHeader::Decrypt (const ConstBufferPtr &encryptedData, const VolumePassword &password, const Pkcs5KdfList &keyDerivationFunctions, const EncryptionAlgorithmList &encryptionAlgorithms, const EncryptionModeList &encryptionModes)
{
if (password.Size() < 1)
throw PasswordEmpty (SRC_POS);
ConstBufferPtr salt (encryptedData.GetRange (SaltOffset, SaltSize));
SecureBuffer header (EncryptedHeaderDataSize);
SecureBuffer headerKey (GetLargestSerializedKeySize());
foreach (shared_ptr <Pkcs5Kdf> pkcs5, keyDerivationFunctions)
{
pkcs5->DeriveKey (headerKey, password, salt);
foreach (shared_ptr <EncryptionMode> mode, encryptionModes)
{
if (typeid (*mode) != typeid (EncryptionModeXTS))
mode->SetKey (headerKey.GetRange (0, mode->GetKeySize()));
foreach (shared_ptr <EncryptionAlgorithm> ea, encryptionAlgorithms)
{
if (!ea->IsModeSupported (mode))
continue;
/*
printf("trying %ls, %ls, %ls\n", pkcs5->GetName().c_str(),
mode->GetName().c_str(),
ea->GetName().c_str()
);
*/
if (typeid (*mode) == typeid (EncryptionModeXTS))
{
ea->SetKey (headerKey.GetRange (0, ea->GetKeySize()));
mode = mode->GetNew();
mode->SetKey (headerKey.GetRange (ea->GetKeySize(), ea->GetKeySize()));
}
else
{
ea->SetKey (headerKey.GetRange (LegacyEncryptionModeKeyAreaSize, ea->GetKeySize()));
}
ea->SetMode (mode);
header.CopyFrom (encryptedData.GetRange (EncryptedHeaderDataOffset, EncryptedHeaderDataSize));
ea->Decrypt (header);
if (Deserialize (header, ea, mode))
{
EA = ea;
Pkcs5 = pkcs5;
return true;
}
}
}
}
/*************************************************
* SHARK Key Schedule *
*************************************************/
void SHARK::set_key(const byte key[], u32bit length) throw(InvalidKeyLength)
{
if(!valid_keylength(length))
throw InvalidKeyLength(name(), length);
SecureBuffer<byte, 56> subkeys;
SecureBuffer<byte, 8> buffer;
for(u32bit j = 0; j != 56; j++)
subkeys[j] = key[j % length];
EK.copy(TE0, 7); EK[6] = transform(EK[6]);
for(u32bit j = 0; j != 7; j++)
{
encrypt(buffer);
xor_buf(subkeys + 8*j, buffer, 8);
buffer.copy(subkeys + 8*j, 8);
}
for(u32bit j = 0; j != 56; j++)
EK[j/8] = (EK[j/8] << 8) + subkeys[j];
DK[0] = EK[6] = transform(EK[6]);
for(u32bit j = 1; j != 6; j++)
DK[j] = transform(EK[6 - j]);
DK[6] = EK[0];
}
/*
* RC2 Key Schedule
*/
void RC2::key_schedule(const byte key[], u32bit length)
{
static const byte TABLE[256] = {
0xD9, 0x78, 0xF9, 0xC4, 0x19, 0xDD, 0xB5, 0xED, 0x28, 0xE9, 0xFD, 0x79,
0x4A, 0xA0, 0xD8, 0x9D, 0xC6, 0x7E, 0x37, 0x83, 0x2B, 0x76, 0x53, 0x8E,
0x62, 0x4C, 0x64, 0x88, 0x44, 0x8B, 0xFB, 0xA2, 0x17, 0x9A, 0x59, 0xF5,
0x87, 0xB3, 0x4F, 0x13, 0x61, 0x45, 0x6D, 0x8D, 0x09, 0x81, 0x7D, 0x32,
0xBD, 0x8F, 0x40, 0xEB, 0x86, 0xB7, 0x7B, 0x0B, 0xF0, 0x95, 0x21, 0x22,
0x5C, 0x6B, 0x4E, 0x82, 0x54, 0xD6, 0x65, 0x93, 0xCE, 0x60, 0xB2, 0x1C,
0x73, 0x56, 0xC0, 0x14, 0xA7, 0x8C, 0xF1, 0xDC, 0x12, 0x75, 0xCA, 0x1F,
0x3B, 0xBE, 0xE4, 0xD1, 0x42, 0x3D, 0xD4, 0x30, 0xA3, 0x3C, 0xB6, 0x26,
0x6F, 0xBF, 0x0E, 0xDA, 0x46, 0x69, 0x07, 0x57, 0x27, 0xF2, 0x1D, 0x9B,
0xBC, 0x94, 0x43, 0x03, 0xF8, 0x11, 0xC7, 0xF6, 0x90, 0xEF, 0x3E, 0xE7,
0x06, 0xC3, 0xD5, 0x2F, 0xC8, 0x66, 0x1E, 0xD7, 0x08, 0xE8, 0xEA, 0xDE,
0x80, 0x52, 0xEE, 0xF7, 0x84, 0xAA, 0x72, 0xAC, 0x35, 0x4D, 0x6A, 0x2A,
0x96, 0x1A, 0xD2, 0x71, 0x5A, 0x15, 0x49, 0x74, 0x4B, 0x9F, 0xD0, 0x5E,
0x04, 0x18, 0xA4, 0xEC, 0xC2, 0xE0, 0x41, 0x6E, 0x0F, 0x51, 0xCB, 0xCC,
0x24, 0x91, 0xAF, 0x50, 0xA1, 0xF4, 0x70, 0x39, 0x99, 0x7C, 0x3A, 0x85,
0x23, 0xB8, 0xB4, 0x7A, 0xFC, 0x02, 0x36, 0x5B, 0x25, 0x55, 0x97, 0x31,
0x2D, 0x5D, 0xFA, 0x98, 0xE3, 0x8A, 0x92, 0xAE, 0x05, 0xDF, 0x29, 0x10,
0x67, 0x6C, 0xBA, 0xC9, 0xD3, 0x00, 0xE6, 0xCF, 0xE1, 0x9E, 0xA8, 0x2C,
0x63, 0x16, 0x01, 0x3F, 0x58, 0xE2, 0x89, 0xA9, 0x0D, 0x38, 0x34, 0x1B,
0xAB, 0x33, 0xFF, 0xB0, 0xBB, 0x48, 0x0C, 0x5F, 0xB9, 0xB1, 0xCD, 0x2E,
0xC5, 0xF3, 0xDB, 0x47, 0xE5, 0xA5, 0x9C, 0x77, 0x0A, 0xA6, 0x20, 0x68,
0xFE, 0x7F, 0xC1, 0xAD };
SecureBuffer<byte, 128> L;
L.copy(key, length);
for(u32bit j = length; j != 128; ++j)
L[j] = TABLE[(L[j-1] + L[j-length]) % 256];
L[128-length] = TABLE[L[128-length]];
for(s32bit j = 127-length; j >= 0; --j)
L[j] = TABLE[L[j+1] ^ L[j+length]];
for(u32bit j = 0; j != 64; ++j)
K[j] = load_le<u16bit>(L, j);
}
void FatFormatter::Format (WriteSectorCallback &writeSector, uint64 deviceSize, uint32 clusterSize, uint32 sectorSize)
{
fatparams fatParams;
#if TC_MAX_VOLUME_SECTOR_SIZE > 0xFFFF
#error TC_MAX_VOLUME_SECTOR_SIZE > 0xFFFF
#endif
fatParams.sector_size = (uint16) sectorSize;
if (deviceSize / fatParams.sector_size > 0xffffFFFF)
throw ParameterIncorrect (SRC_POS);
fatParams.num_sectors = (uint32) (deviceSize / fatParams.sector_size);
fatParams.cluster_size = clusterSize / fatParams.sector_size;
memcpy (fatParams.volume_name, "NO NAME ", 11);
GetFatParams (&fatParams);
fatparams *ft = &fatParams;
SecureBuffer sector (ft->sector_size);
uint32 sectorNumber = 0;
/* Write the data area */
sector.Zero();
uint32 volumeId;
RandomNumberGenerator::GetDataFast (BufferPtr ((byte *) &volumeId, sizeof (volumeId)));
PutBoot (ft, (byte *) sector, volumeId);
writeSector (sector); ++sectorNumber;
/* fat32 boot area */
if (ft->size_fat == 32)
{
/* fsinfo */
PutFSInfo((byte *) sector, ft);
writeSector (sector); ++sectorNumber;
/* reserved */
while (sectorNumber < 6)
{
sector.Zero();
sector[508+3] = 0xaa; /* TrailSig */
sector[508+2] = 0x55;
writeSector (sector); ++sectorNumber;
}
/* bootsector backup */
sector.Zero();
PutBoot (ft, (byte *) sector, volumeId);
writeSector (sector); ++sectorNumber;
PutFSInfo((byte *) sector, ft);
writeSector (sector); ++sectorNumber;
}
/* reserved */
while (sectorNumber < (uint32)ft->reserved)
{
sector.Zero();
writeSector (sector); ++sectorNumber;
}
/* write fat */
for (uint32 x = 1; x <= ft->fats; x++)
{
for (uint32 n = 0; n < ft->fat_length; n++)
{
sector.Zero();
if (n == 0)
{
byte fat_sig[12];
if (ft->size_fat == 32)
{
fat_sig[0] = (byte) ft->media;
fat_sig[1] = fat_sig[2] = 0xff;
fat_sig[3] = 0x0f;
fat_sig[4] = fat_sig[5] = fat_sig[6] = 0xff;
fat_sig[7] = 0x0f;
fat_sig[8] = fat_sig[9] = fat_sig[10] = 0xff;
fat_sig[11] = 0x0f;
memcpy (sector, fat_sig, 12);
}
else if (ft->size_fat == 16)
{
fat_sig[0] = (byte) ft->media;
fat_sig[1] = 0xff;
fat_sig[2] = 0xff;
fat_sig[3] = 0xff;
memcpy (sector, fat_sig, 4);
}
else if (ft->size_fat == 12)
{
fat_sig[0] = (byte) ft->media;
fat_sig[1] = 0xff;
fat_sig[2] = 0xff;
fat_sig[3] = 0x00;
memcpy (sector, fat_sig, 4);
}
}
if (!writeSector (sector))
return;
}
}
/* write rootdir */
for (uint32 x = 0; x < ft->size_root_dir / ft->sector_size; x++)
{
sector.Zero();
if (!writeSector (sector))
return;
}
}
void connect(void *const handle, const string &host, const string &port,
const ProxyConfig &proxy, const string &userName,
const SecureBuffer &password, const string &userJID,
const string &xmppDomain, InBandRegister inbandRegistrationAction,
xmpp_connection_callback_t callback)
{
(void)inbandRegistrationAction;
#ifdef ENABLE_LIBSTROPHE
auto xmlConnection = make_shared<XmppStropheConnection>(host, port);
#else
auto remoteTcp = make_shared<TcpConnection>(host, port, proxy);
auto xmlConnection = make_shared<XmppConnection>(
static_pointer_cast<IStreamConnection>(remoteTcp));
#endif // ENABLE_LIBSTROPHE
XmppConfig config(JabberID(userJID), xmppDomain);
config.requireTLSNegotiation();
config.setSaslConfig("SCRAM-SHA-1", SaslScramSha1::Params::create(userName, password));
config.setSaslConfig("PLAIN", SaslPlain::Params::create(userName, password));
#ifndef DISABLE_SUPPORT_XEP0077
if (inbandRegistrationAction != XMPP_NO_IN_BAND_REGISTER)
{
config.requestInBandRegistration();
auto registrationParams = InBandRegistration::Params::create();
registrationParams->setRegistrationParam("username", userName);
string passwordStr((const char *)password.get(), password.size());
registrationParams->setRegistrationParam("password", passwordStr);
config.setExtensionConfig(InBandRegistration::extensionName(), registrationParams);
}
#endif
{
lock_guard<recursive_mutex> lock(ContextWrapper::mutex());
ContextWrapper::s_connectionParams[xmlConnection] = {handle, callback};
}
{
lock_guard<recursive_mutex> lock(m_mutex);
if (!m_client)
{
m_client = XmppClient::create();
auto createdFunc =
// Note: We don't really need reference capturing, but there is a bug in C++
// 4.6 where static functions still require capturing this.
[&](XmppStreamCreatedEvent & e)
{
ConnectionParams params{};
{
lock_guard<recursive_mutex> lock(ContextWrapper::mutex());
auto f = ContextWrapper::s_connectionParams.find(e.remoteServer());
if (f == ContextWrapper::s_connectionParams.end())
{
return;
}
params = f->second;
}
auto stream = e.stream();
if (e.result().succeeded() && stream)
{
const void *streamHandle = stream.get();
{
lock_guard<recursive_mutex> lock(ContextWrapper::mutex());
ContextWrapper::s_streamsByHandle[streamHandle] = stream;
}
auto callback = params.m_callback;
auto streamConnectedFunc =
// Note: We don't really need reference capturing, but there is a
// bug in C++ 4.6 where static functions still require
// capturing this.
[&, stream, streamHandle, callback](XmppConnectedEvent & e)
{
// Send first presence message
postPresence(stream);
if (callback.on_connected)
{
xmpp_connection_handle_t connectionHandle = {streamHandle};
callback.on_connected(callback.param,
translateError(e.result()),
e.boundJID().c_str(),
connectionHandle);
}
};
typedef NotifySyncFunc<XmppConnectedEvent,
decltype(streamConnectedFunc)> StreamConnectedFunc;
stream->onConnected() += make_shared<StreamConnectedFunc>(
streamConnectedFunc);
auto streamClosedFunc =
// Note: We don't really need reference capturing, but there is a
// bug in C++ 4.6 where static functions still require
// capturing this.
[&, streamHandle, callback](XmppClosedEvent & e)
{
if (callback.on_disconnected)
{
xmpp_connection_handle_t connectionHandle = {streamHandle};
callback.on_disconnected(callback.param,
translateError(e.result()),
connectionHandle);
}
{
lock_guard<recursive_mutex> lock(ContextWrapper::mutex());
ContextWrapper::s_streamsByHandle.erase(streamHandle);
}
};
typedef NotifySyncFunc<XmppClosedEvent,
decltype(streamClosedFunc)> StreamClosedFunc;
stream->onClosed() += make_shared<StreamClosedFunc>(streamClosedFunc);
}
else
{
xmpp_error_code_t errorCode = translateError(e.result());
if (params.m_callback.on_connected && isValidWrapper(params.m_handle))
{
xmpp_connection_handle_t connectionHandle = {params.m_handle};
params.m_callback.on_connected(params.m_callback.param, errorCode,
nullptr, connectionHandle);
}
}
{
lock_guard<recursive_mutex> lock(mutex());
ContextWrapper::s_connectionParams.erase(e.remoteServer());
}
};
typedef NotifySyncFunc<XmppStreamCreatedEvent,
decltype(createdFunc)> StreamCreatedFunc;
m_client->onStreamCreated() += make_shared<StreamCreatedFunc>(createdFunc);
}
}
m_client->initiateXMPP(config, xmlConnection);
}
static int fuse_service_read (const char *path, char *buf, size_t size, off_t offset, struct fuse_file_info *fi)
{
try
{
if (!FuseService::CheckAccessRights())
return -EACCES;
if (strcmp (path, FuseService::GetVolumeImagePath()) == 0)
{
try
{
// Test for read beyond the end of the volume
if ((uint64) offset + size > FuseService::GetVolumeSize())
size = FuseService::GetVolumeSize() - offset;
size_t sectorSize = FuseService::GetVolumeSectorSize();
if (size % sectorSize != 0 || offset % sectorSize != 0)
{
// Support for non-sector-aligned read operations is required by some loop device tools
// which may analyze the volume image before attaching it as a device
uint64 alignedOffset = offset - (offset % sectorSize);
uint64 alignedSize = size + (offset % sectorSize);
if (alignedSize % sectorSize != 0)
alignedSize += sectorSize - (alignedSize % sectorSize);
SecureBuffer alignedBuffer (alignedSize);
FuseService::ReadVolumeSectors (alignedBuffer, alignedOffset);
BufferPtr ((byte *) buf, size).CopyFrom (alignedBuffer.GetRange (offset % sectorSize, size));
}
else
{
FuseService::ReadVolumeSectors (BufferPtr ((byte *) buf, size), offset);
}
}
catch (MissingVolumeData)
{
return 0;
}
return size;
}
if (strcmp (path, FuseService::GetControlPath()) == 0)
{
shared_ptr <Buffer> infoBuf = FuseService::GetVolumeInfo();
BufferPtr outBuf ((byte *)buf, size);
if (offset >= (off_t) infoBuf->Size())
return 0;
if (offset + size > infoBuf->Size())
size = infoBuf->Size () - offset;
outBuf.CopyFrom (infoBuf->GetRange (offset, size));
return size;
}
}
catch (...)
{
return FuseService::ExceptionToErrorCode();
}
return -ENOENT;
}
void KeyfileGeneratorDialog::OnGenerateButtonClick (wxCommandEvent& event)
{
try
{
int keyfilesCount = NumberOfKeyfiles->GetValue();
int keyfilesSize = KeyfilesSize->GetValue();
bool useRandomSize = RandomSizeCheckBox->IsChecked();
wxString keyfileBaseName = KeyfilesBaseName->GetValue();
keyfileBaseName.Trim(true);
keyfileBaseName.Trim(false);
if (keyfileBaseName.IsEmpty())
{
Gui->ShowWarning("KEYFILE_EMPTY_BASE_NAME");
return;
}
wxFileName baseFileName = wxFileName::FileName (keyfileBaseName);
if (!baseFileName.IsOk())
{
Gui->ShowWarning("KEYFILE_INVALID_BASE_NAME");
return;
}
DirectoryPath keyfilesDir = Gui->SelectDirectory (Gui->GetActiveWindow(), LangString["SELECT_KEYFILE_GENERATION_DIRECTORY"], false);
if (keyfilesDir.IsEmpty())
return;
wxFileName dirFileName = wxFileName::DirName( wstring(keyfilesDir).c_str() );
if (!dirFileName.IsDirWritable ())
{
Gui->ShowWarning(L"You don't have write permission on the selected directory");
return;
}
wxBusyCursor busy;
for (int i = 0; i < keyfilesCount; i++)
{
int bufferLen;
if (useRandomSize)
{
SecureBuffer sizeBuffer (sizeof(int));
RandomNumberGenerator::GetData (sizeBuffer, true);
memcpy(&bufferLen, sizeBuffer.Ptr(), sizeof(int));
/* since keyfilesSize < 1024 * 1024, we mask with 0x000FFFFF */
bufferLen = (long) (((unsigned long) bufferLen) & 0x000FFFFF);
bufferLen %= ((1024*1024 - 64) + 1);
bufferLen += 64;
}
else
bufferLen = keyfilesSize;
SecureBuffer keyfileBuffer (bufferLen);
RandomNumberGenerator::GetData (keyfileBuffer, true);
wstringstream convertStream;
convertStream << i;
wxString suffix = L"_";
suffix += convertStream.str().c_str();
wxFileName keyfileName;
if (i == 0)
{
keyfileName.Assign(dirFileName.GetPath(), keyfileBaseName);
}
else
{
if (baseFileName.HasExt())
{
keyfileName.Assign(dirFileName.GetPath(), baseFileName.GetName() + suffix + L"." + baseFileName.GetExt());
}
else
{
keyfileName.Assign(dirFileName.GetPath(), keyfileBaseName + suffix);
}
}
if (keyfileName.Exists())
{
wxString msg = wxString::Format(LangString["KEYFILE_ALREADY_EXISTS"], keyfileName.GetFullPath());
if (!Gui->AskYesNo (msg, false, true))
return;
}
{
FilePath keyfilePath((const wchar_t*) keyfileName.GetFullPath());
File keyfile;
keyfile.Open (keyfilePath, File::CreateWrite);
keyfile.Write (keyfileBuffer);
}
}
Gui->ShowInfo ("KEYFILE_CREATED");
}
catch (exception &e)
{
Gui->ShowError (e);
}
}
