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VeraCrypt/src/Main/TextUserInterface.cpp

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/*
Derived from source code of TrueCrypt 7.1a, which is
Copyright (c) 2008-2012 TrueCrypt Developers Association and which is governed
by the TrueCrypt License 3.0.
Modifications and additions to the original source code (contained in this file)
and all other portions of this file are Copyright (c) 2013-2017 IDRIX
and are governed by the Apache License 2.0 the full text of which is
contained in the file License.txt included in VeraCrypt binary and source
code distribution packages.
*/
#include "System.h"
#ifdef TC_UNIX
#include <signal.h>
#include <termios.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include "Platform/Unix/Process.h"
#endif
#include <wx/platinfo.h>
#include "Common/Token.h"
#include "Common/SecurityToken.h"
#include "Common/EMVToken.h"
#include "Core/RandomNumberGenerator.h"
#include "Application.h"
#include "TextUserInterface.h"
namespace VeraCrypt
{
TextUserInterface::TextUserInterface ()
{
#ifdef TC_UNIX
signal (SIGHUP, OnSignal);
signal (SIGINT, OnSignal);
signal (SIGQUIT, OnSignal);
signal (SIGTERM, OnSignal);
struct stat statBuf;
if (fstat (0, &statBuf) != -1)
#endif
{
FInputStream.reset (new wxFFileInputStream (stdin));
// Set fallback encoding of the stream converter to UTF-8
// to make sure we interpret multibyte symbols properly
TextInputStream.reset (new wxTextInputStream (*FInputStream, wxT(" \t"), wxConvAuto(wxFONTENCODING_UTF8)));
}
}
TextUserInterface::~TextUserInterface ()
{
try
{
if (RandomNumberGenerator::IsRunning())
RandomNumberGenerator::Stop();
}
catch (...) { }
#ifdef TC_UNIX
signal (SIGHUP, SIG_DFL);
signal (SIGINT, SIG_DFL);
signal (SIGQUIT, SIG_DFL);
signal (SIGTERM, SIG_DFL);
#endif
}
FilePath TextUserInterface::AskFilePath (const wxString &message) const
{
return AskString (!message.empty() ? message : wxString (_("Enter filename: ")));
}
shared_ptr <KeyfileList> TextUserInterface::AskKeyfiles (const wxString &message) const
{
wxString msg = _("Enter keyfile");
if (!message.empty())
msg = message;
make_shared_auto (KeyfileList, keyfiles);
wxString s;
wxString m = msg + L" [" + _("none") + L"]: ";
while (!(s = AskString (m)).empty())
{
keyfiles->push_back (make_shared <Keyfile> (wstring (s)));
m = msg + L" [" + _("finish") + L"]: ";
}
return keyfiles;
}
shared_ptr <VolumePassword> TextUserInterface::AskPassword (const wxString &message, bool verify) const
{
wxString msg = LangString["ENTER_PASSWORD"] + L": ";
if (!message.empty())
msg = message + L": ";
SetTerminalEcho (false);
finally_do ({ TextUserInterface::SetTerminalEcho (true); });
wchar_t passwordBuf[4096];
finally_do_arg (BufferPtr, BufferPtr (reinterpret_cast <byte *> (passwordBuf), sizeof (passwordBuf)), { finally_arg.Erase(); });
shared_ptr<VolumePassword> password;
bool verPhase = false;
while (true)
{
ShowString (verPhase ? wxString (_("Re-enter password: ")) : msg);
wxString passwordStr;
ReadInputStreamLine (passwordStr);
size_t length = passwordStr.size();
ShowString (L"\n");
if (!verPhase && length < 1)
{
return shared_ptr <VolumePassword>(new VolumePassword ());
}
for (size_t i = 0; i < length && i < VolumePassword::MaxSize; ++i)
{
passwordBuf[i] = (wchar_t) passwordStr[i];
const_cast <wchar_t *> (passwordStr.wc_str())[i] = L'X';
}
if (verify && verPhase)
{
shared_ptr <VolumePassword> verPassword = ToUTF8Password (passwordBuf, length, CmdLine->ArgUseLegacyPassword? VolumePassword::MaxLegacySize : VolumePassword::MaxSize);
if (*password != *verPassword)
{
ShowInfo (_("Passwords do not match."));
ShowString (L"\n");
verPhase = false;
continue;
}
}
password = ToUTF8Password (passwordBuf, length, CmdLine->ArgUseLegacyPassword? VolumePassword::MaxLegacySize : VolumePassword::MaxSize);
if (!verPhase)
{
if (verify)
{
if (password->Size() < VolumePassword::WarningSizeThreshold)
{
SetTerminalEcho (true);
finally_do ({ TextUserInterface::SetTerminalEcho (false); });
if (!AskYesNo (LangString ["PASSWORD_LENGTH_WARNING"], false, true))
{
ShowString (L"\n");
continue;
}
ShowString (L"\n");
}
}
}
if (!verify || verPhase)
return password;
if (!verPhase)
verPhase = true;
}
return password;
}
int TextUserInterface::AskPim (const wxString &message) const
{
int pim = -1;
wxString msg = _("Enter new PIM: ");
if (!message.empty())
msg = message + L": ";
SetTerminalEcho (false);
finally_do ({ TextUserInterface::SetTerminalEcho (true); });
while (pim < 0)
{
wstring pimStr = AskString (msg);
ShowString (L"\n");
if (pimStr.empty())
pim = 0;
else
{
try
{
pim = (int) StringConverter::ToUInt32 (pimStr);
if (pim > MAX_PIM_VALUE)
{
pim = -1;
ShowError ("PIM_TOO_BIG");
continue;
}
}
catch (...)
{
pim = -1;
continue;
}
}
}
return pim;
}
ssize_t TextUserInterface::AskSelection (ssize_t optionCount, ssize_t defaultOption) const
{
while (true)
{
wstring selectionStr = AskString (defaultOption == -1 ? wxString (_("Select: ")) : wxString (wstring (StringFormatter (_("Select [{0}]: "), (uint32) defaultOption))));
ssize_t selection;
if (selectionStr.empty() && defaultOption != -1)
return defaultOption;
try
{
selection = StringConverter::ToUInt32 (selectionStr);
}
catch (...)
{
continue;
}
if (selection > 0 && selection <= optionCount)
return selection;
}
}
wstring TextUserInterface::AskString (const wxString &message) const
{
ShowString (message);
return wstring (ReadInputStreamLine());
}
bool TextUserInterface::AskYesNo (const wxString &message, bool defaultYes, bool warning) const
{
while (true)
{
wxString s = AskString (StringFormatter (L"{0} (y={1}/n={2}) [{3}]: ",
message, LangString["UISTR_YES"], LangString["UISTR_NO"], LangString[defaultYes ? "UISTR_YES" : "UISTR_NO"]));
if (s.IsSameAs (L'n', false) || s.IsSameAs (L"no", false) || (!defaultYes && s.empty()))
return false;
if (s.IsSameAs (L'y', false) || s.IsSameAs (L"yes", false) || (defaultYes && s.empty()))
return true;
};
}
shared_ptr <VolumePath> TextUserInterface::AskVolumePath (const wxString &message) const
{
return make_shared <VolumePath> (AskString (message.empty() ? wxString (_("Enter volume path: ")) : message));
}
void TextUserInterface::BackupVolumeHeaders (shared_ptr <VolumePath> volumePath) const
{
if (!volumePath)
volumePath = AskVolumePath();
if (!volumePath)
throw UserAbort (SRC_POS);
#ifdef TC_WINDOWS
if (Core->IsVolumeMounted (*volumePath))
throw_err (LangString["DISMOUNT_FIRST"]);
#endif
ShowInfo ("EXTERNAL_VOL_HEADER_BAK_FIRST_INFO");
shared_ptr <Pkcs5Kdf> kdf;
if (CmdLine->ArgHash)
{
kdf = Pkcs5Kdf::GetAlgorithm (*CmdLine->ArgHash);
}
shared_ptr <Volume> normalVolume;
shared_ptr <Volume> hiddenVolume;
MountOptions normalVolumeMountOptions;
MountOptions hiddenVolumeMountOptions;
normalVolumeMountOptions.Path = volumePath;
hiddenVolumeMountOptions.Path = volumePath;
normalVolumeMountOptions.EMVSupportEnabled = true;
hiddenVolumeMountOptions.EMVSupportEnabled = true;
VolumeType::Enum volumeType = VolumeType::Normal;
// Open both types of volumes
while (true)
{
shared_ptr <Volume> volume;
MountOptions *options = (volumeType == VolumeType::Hidden ? &hiddenVolumeMountOptions : &normalVolumeMountOptions);
while (!volume)
{
ShowString (L"\n");
options->Password = AskPassword (LangString[volumeType == VolumeType::Hidden ? "ENTER_HIDDEN_VOL_PASSWORD" : "ENTER_NORMAL_VOL_PASSWORD"]);
options->Pim = AskPim (volumeType == VolumeType::Hidden ?_("Enter PIM for the hidden volume") : _("Enter PIM for the normal/outer volume"));
options->Keyfiles = AskKeyfiles();
try
{
volume = Core->OpenVolume (
options->Path,
options->PreserveTimestamps,
options->Password,
options->Pim,
kdf,
options->Keyfiles,
options->EMVSupportEnabled,
options->Protection,
options->ProtectionPassword,
options->ProtectionPim,
options->ProtectionKdf,
options->ProtectionKeyfiles,
true,
volumeType,
options->UseBackupHeaders
);
}
catch (PasswordException &e)
{
bool bFailed = true;
if (!options->UseBackupHeaders)
{
try
{
volume = Core->OpenVolume (
options->Path,
options->PreserveTimestamps,
options->Password,
options->Pim,
kdf,
options->Keyfiles,
options->EMVSupportEnabled,
options->Protection,
options->ProtectionPassword,
options->ProtectionPim,
options->ProtectionKdf,
options->ProtectionKeyfiles,
true,
volumeType,
true
);
bFailed = false;
}
catch (...)
{
}
}
if (bFailed)
ShowInfo (e);
else
ShowInfo ("HEADER_DAMAGED_AUTO_USED_HEADER_BAK");
}
}
if (volumeType == VolumeType::Hidden)
hiddenVolume = volume;
else
normalVolume = volume;
// Ask whether a hidden volume is present
if (volumeType == VolumeType::Normal && AskYesNo (L"\n" + LangString["DOES_VOLUME_CONTAIN_HIDDEN"]))
{
volumeType = VolumeType::Hidden;
continue;
}
break;
}
if (hiddenVolume)
{
if (typeid (*normalVolume->GetLayout()) == typeid (VolumeLayoutV1Normal))
throw ParameterIncorrect (SRC_POS);
if (typeid (*normalVolume->GetLayout()) == typeid (VolumeLayoutV2Normal) && typeid (*hiddenVolume->GetLayout()) != typeid (VolumeLayoutV2Hidden))
throw ParameterIncorrect (SRC_POS);
}
// Ask user to select backup file path
wxString confirmMsg = L"\n" + LangString["CONFIRM_VOL_HEADER_BAK"] + L"\n";
if (!AskYesNo (wxString::Format (confirmMsg, wstring (*volumePath).c_str()), true))
return;
ShowString (L"\n");
FilePath filePath = AskFilePath();
if (filePath.IsEmpty())
throw UserAbort (SRC_POS);
File backupFile;
backupFile.Open (filePath, File::CreateWrite);
RandomNumberGenerator::Start();
/* force the display of the random enriching interface */
RandomNumberGenerator::SetEnrichedByUserStatus (false);
UserEnrichRandomPool();
// Re-encrypt volume header
SecureBuffer newHeaderBuffer (normalVolume->GetLayout()->GetHeaderSize());
Core->ReEncryptVolumeHeaderWithNewSalt (newHeaderBuffer, normalVolume->GetHeader(), normalVolumeMountOptions.Password, normalVolumeMountOptions.Pim, normalVolumeMountOptions.Keyfiles, normalVolumeMountOptions.EMVSupportEnabled);
backupFile.Write (newHeaderBuffer);
if (hiddenVolume)
{
// Re-encrypt hidden volume header
Core->ReEncryptVolumeHeaderWithNewSalt (newHeaderBuffer, hiddenVolume->GetHeader(), hiddenVolumeMountOptions.Password, hiddenVolumeMountOptions.Pim, hiddenVolumeMountOptions.Keyfiles, hiddenVolumeMountOptions.EMVSupportEnabled);
}
else
{
// Store random data in place of hidden volume header
shared_ptr <EncryptionAlgorithm> ea = normalVolume->GetEncryptionAlgorithm();
Core->RandomizeEncryptionAlgorithmKey (ea);
ea->Encrypt (newHeaderBuffer);
}
backupFile.Write (newHeaderBuffer);
ShowString (L"\n");
ShowInfo ("VOL_HEADER_BACKED_UP");
}
void TextUserInterface::ChangePassword (shared_ptr <VolumePath> volumePath, shared_ptr <VolumePassword> password, int pim, shared_ptr <Hash> currentHash, shared_ptr <KeyfileList> keyfiles, shared_ptr <VolumePassword> newPassword, int newPim, shared_ptr <KeyfileList> newKeyfiles, shared_ptr <Hash> newHash) const
{
shared_ptr <Volume> volume;
// Volume path
if (!volumePath.get())
{
if (Preferences.NonInteractive)
throw MissingArgument (SRC_POS);
volumePath = AskVolumePath ();
}
if (volumePath->IsEmpty())
throw UserAbort (SRC_POS);
bool passwordInteractive = !password.get();
bool keyfilesInteractive = !keyfiles.get();
shared_ptr<Pkcs5Kdf> kdf;
if (currentHash)
{
kdf = Pkcs5Kdf::GetAlgorithm (*currentHash);
}
while (true)
{
// Current password
if (!passwordInteractive)
{
}
else if (!Preferences.NonInteractive)
{
password = AskPassword ();
}
// current PIM
if (!Preferences.NonInteractive && (pim < 0))
{
pim = AskPim (_("Enter current PIM"));
}
// Current keyfiles
try
{
if (keyfilesInteractive)
{
// Ask for keyfiles only if required
try
{
keyfiles.reset (new KeyfileList);
volume = Core->OpenVolume (volumePath, Preferences.DefaultMountOptions.PreserveTimestamps, password, pim, kdf, keyfiles, true);
}
catch (PasswordException&)
{
if (!Preferences.NonInteractive)
keyfiles = AskKeyfiles ();
}
}
if (!volume.get())
volume = Core->OpenVolume (volumePath, Preferences.DefaultMountOptions.PreserveTimestamps, password, pim, kdf, keyfiles, true);
}
catch (PasswordException &e)
{
if (Preferences.NonInteractive || !passwordInteractive || !keyfilesInteractive)
throw;
ShowInfo (e);
continue;
}
break;
}
// New password
if (!newPassword.get() && !Preferences.NonInteractive)
newPassword = AskPassword (_("Enter new password"), true);
// New PIM
if ((newPim < 0) && !Preferences.NonInteractive)
newPim = AskPim (_("Enter new PIM"));
// New keyfiles
if (!newKeyfiles.get() && !Preferences.NonInteractive)
{
if (keyfiles.get() && keyfiles->size() > 0 && AskYesNo (_("Keep current keyfiles?"), true))
newKeyfiles = keyfiles;
else
newKeyfiles = AskKeyfiles (_("Enter new keyfile"));
}
/* force the display of the random enriching interface */
RandomNumberGenerator::SetEnrichedByUserStatus (false);
UserEnrichRandomPool();
Core->ChangePassword (volume, newPassword, newPim, newKeyfiles, true,
newHash ? Pkcs5Kdf::GetAlgorithm (*newHash) : shared_ptr <Pkcs5Kdf>());
ShowInfo ("PASSWORD_CHANGED");
}
void TextUserInterface::CreateKeyfile (shared_ptr <FilePath> keyfilePath) const
{
FilePath path;
RandomNumberGenerator::Start();
/* force the display of the random enriching interface */
RandomNumberGenerator::SetEnrichedByUserStatus (false);
UserEnrichRandomPool();
if (keyfilePath)
{
Core->CreateKeyfile (*keyfilePath);
}
else
{
wstring fileName = AskFilePath();
if (fileName.empty())
return;
Core->CreateKeyfile (fileName);
}
ShowInfo ("KEYFILE_CREATED");
}
void TextUserInterface::CreateVolume (shared_ptr <VolumeCreationOptions> options) const
{
// Volume type
if (options->Type == VolumeType::Unknown)
{
if (Preferences.NonInteractive)
{
options->Type = VolumeType::Normal;
}
else
{
ShowString (_("Volume type:\n 1) Normal\n 2) Hidden\n"));
switch (AskSelection (2, 1))
{
case 1:
options->Type = VolumeType::Normal;
break;
case 2:
options->Type = VolumeType::Hidden;
break;
}
}
}
shared_ptr <VolumeLayout> layout;
if (options->Type == VolumeType::Hidden)
layout.reset (new VolumeLayoutV2Hidden);
else
layout.reset (new VolumeLayoutV2Normal);
if (!Preferences.NonInteractive && options->Type == VolumeType::Hidden)
ShowInfo (_("\nIMPORTANT: Inexperienced users should use the graphical user interface to create a hidden volume. When using the text interface, the procedure described in the command line help must be followed to create a hidden volume."));
// Volume path
if (options->Path.IsEmpty())
{
if (Preferences.NonInteractive)
throw MissingArgument (SRC_POS);
do
{
ShowString (L"\n");
options->Path = VolumePath (*AskVolumePath());
} while (options->Path.IsEmpty());
}
// Sector size
if (options->Path.IsDevice())
options->SectorSize = Core->GetDeviceSectorSize (options->Path);
else
options->SectorSize = TC_SECTOR_SIZE_FILE_HOSTED_VOLUME;
// Volume size
uint64 hostSize = 0;
if (options->Type == VolumeType::Hidden)
{
FilesystemPath fsPath (wstring (options->Path));
if (fsPath.IsFile())
{
File file;
file.Open (fsPath);
hostSize = file.Length();
}
else if (fsPath.IsDevice())
{
hostSize = Core->GetDeviceSize (fsPath);
}
else
{
throw_err (_("Hidden volume can be created only in an existing file or device."));
}
if (hostSize < TC_MIN_HIDDEN_VOLUME_HOST_SIZE)
throw_err (StringFormatter (_("Minimum outer volume size is {0}."), SizeToString (TC_MIN_HIDDEN_VOLUME_HOST_SIZE)));
}
uint64 minVolumeSize = options->Type == VolumeType::Hidden ? TC_MIN_HIDDEN_VOLUME_SIZE : TC_MIN_VOLUME_SIZE;
uint64 maxVolumeSize = options->Type == VolumeType::Hidden ? VolumeLayoutV2Normal().GetMaxDataSize (hostSize) - TC_MIN_FAT_FS_SIZE : TC_MAX_VOLUME_SIZE_GENERAL;
if (options->Path.IsDevice() && options->Type != VolumeType::Hidden)
{
if (options->Size != 0)
throw_err (_("Volume size cannot be changed for device-hosted volumes."));
options->Size = Core->GetDeviceSize (options->Path);
}
else
{
uint64 AvailableDiskSpace = 0;
if (options->Path.IsDevice())
{
AvailableDiskSpace = maxVolumeSize;
}
else
{
wxLongLong diskSpace = 0;
wxString parentDir = wxFileName (wstring (options->Path)).GetPath();
if (parentDir.IsEmpty())
{
parentDir = wxT(".");
}
if (options->Type == VolumeType::Normal && wxDirExists(parentDir) && wxGetDiskSpace (parentDir, nullptr, &diskSpace))
{
AvailableDiskSpace = (uint64) diskSpace.GetValue ();
if (maxVolumeSize > AvailableDiskSpace)
maxVolumeSize = AvailableDiskSpace;
}
}
if (options->Size == (uint64) (-1))
{
if (options->Type == VolumeType::Hidden) {
throw_err (_("Please do not use maximum size for hidden volume. As we do not mount the outer volume to determine the available space, it is your responsibility to choose a value so that the hidden volume does not overlap the outer volume."));
}
else if (AvailableDiskSpace)
{
// caller requesting maximum size
// we use maxVolumeSize because it is guaranteed to be less or equal to AvailableDiskSpace for outer volumes
options->Size = maxVolumeSize;
}
else
{
throw_err (_("Failed to get available disk space on the selected target."));
}
}
options->Quick = false;
uint32 sectorSizeRem = options->Size % options->SectorSize;
if (sectorSizeRem != 0)
options->Size += options->SectorSize - sectorSizeRem;
while (options->Size == 0)
{
if (Preferences.NonInteractive)
throw MissingArgument (SRC_POS);
uint64 multiplier = 1024 * 1024;
wxString sizeStr = AskString (options->Type == VolumeType::Hidden ? _("\nEnter hidden volume size (sizeK/size[M]/sizeG/sizeT): ") : _("\nEnter volume size (sizeK/size[M]/sizeG.sizeT/max): "));
if (sizeStr.CmpNoCase(wxT("max")) == 0)
{
multiplier = 1;
if (options->Type == VolumeType::Hidden) {
throw_err (_("Please do not use maximum size for hidden volume. As we do not mount the outer volume to determine the available space, it is your responsibility to choose a value so that the hidden volume does not overlap the outer volume."));
}
else if (AvailableDiskSpace)
{
// caller requesting maximum size
// we use maxVolumeSize because it is guaranteed to be less or equal to AvailableDiskSpace for outer volumes
options->Size = maxVolumeSize;
}
else
{
throw_err (_("Failed to get available disk space on the selected target."));
}
}
else
{
multiplier = 1024 * 1024;
size_t index = sizeStr.find_first_not_of (wxT("0123456789"));
if (index == 0)
{
continue;
}
else if (index != (size_t) wxNOT_FOUND)
{
wxString sizeSuffix = sizeStr.Mid(index);
if (sizeSuffix.CmpNoCase(wxT("K")) == 0 || sizeSuffix.CmpNoCase(wxT("KiB")) == 0)
multiplier = BYTES_PER_KB;
else if (sizeSuffix.CmpNoCase(wxT("M")) == 0 || sizeSuffix.CmpNoCase(wxT("MiB")) == 0)
multiplier = BYTES_PER_MB;
else if (sizeSuffix.CmpNoCase(wxT("G")) == 0 || sizeSuffix.CmpNoCase(wxT("GiB")) == 0)
multiplier = BYTES_PER_GB;
else if (sizeSuffix.CmpNoCase(wxT("T")) == 0 || sizeSuffix.CmpNoCase(wxT("TiB")) == 0)
multiplier = BYTES_PER_TB;
else
continue;
sizeStr = sizeStr.Left (index);
}
try
{
options->Size = StringConverter::ToUInt64 (wstring(sizeStr));
}
catch (...)
{
options->Size = 0;
continue;
}
}
options->Size *= multiplier;
sectorSizeRem = options->Size % options->SectorSize;
if (sectorSizeRem != 0)
options->Size += options->SectorSize - sectorSizeRem;
if (options->Size < minVolumeSize)
{
ShowError (StringFormatter (_("Minimum volume size is {0}."), SizeToString (minVolumeSize)));
options->Size = 0;
}
if (options->Size > maxVolumeSize)
{
ShowError (StringFormatter (_("Maximum volume size is {0}."), SizeToString (maxVolumeSize)));
options->Size = 0;
}
}
}
if (options->Size < minVolumeSize || options->Size > maxVolumeSize)
throw_err (_("Incorrect volume size"));
if (options->Type == VolumeType::Hidden)
options->Quick = true;
// Encryption algorithm
if (!options->EA)
{
if (Preferences.NonInteractive)
throw MissingArgument (SRC_POS);
ShowInfo (wxString (L"\n") + LangString["ENCRYPTION_ALGORITHM_LV"] + L":");
vector < shared_ptr <EncryptionAlgorithm> > encryptionAlgorithms;
foreach (shared_ptr <EncryptionAlgorithm> ea, EncryptionAlgorithm::GetAvailableAlgorithms())
{
if (!ea->IsDeprecated())
{
ShowString (StringFormatter (L" {0}) {1}\n", (uint32) encryptionAlgorithms.size() + 1, ea->GetName(true)));
encryptionAlgorithms.push_back (ea);
}
}
options->EA = encryptionAlgorithms[AskSelection (encryptionAlgorithms.size(), 1) - 1];
}
// Hash algorithm
if (!options->VolumeHeaderKdf)
{
if (Preferences.NonInteractive)
throw MissingArgument (SRC_POS);
ShowInfo (_("\nHash algorithm:"));
vector < shared_ptr <Hash> > hashes;
foreach (shared_ptr <Hash> hash, Hash::GetAvailableAlgorithms())
{
if (!hash->IsDeprecated())
{
ShowString (StringFormatter (L" {0}) {1}\n", (uint32) hashes.size() + 1, hash->GetName()));
hashes.push_back (hash);
}
}
shared_ptr <Hash> selectedHash = hashes[AskSelection (hashes.size(), 1) - 1];
RandomNumberGenerator::SetHash (selectedHash);
options->VolumeHeaderKdf = Pkcs5Kdf::GetAlgorithm (*selectedHash);
}
// Filesystem
options->FilesystemClusterSize = 0;
uint64 filesystemSize = layout->GetMaxDataSize (options->Size);
if (options->Filesystem == VolumeCreationOptions::FilesystemType::Unknown)
{
if (Preferences.NonInteractive)
{
options->Filesystem = VolumeCreationOptions::FilesystemType::GetPlatformNative();
}
else
{
ShowInfo (_("\nFilesystem:"));
vector <VolumeCreationOptions::FilesystemType::Enum> filesystems;
ShowInfo (wxString::Format (L" %li) %s", filesystems.size() + 1, LangString["NONE"])); filesystems.push_back (VolumeCreationOptions::FilesystemType::None);
ShowInfo (wxString::Format (L" %li) %s", filesystems.size() + 1, "FAT")); filesystems.push_back (VolumeCreationOptions::FilesystemType::FAT);
#if defined (TC_LINUX)
ShowInfo (wxString::Format (L" %li) %s", filesystems.size() + 1, "Linux Ext2")); filesystems.push_back (VolumeCreationOptions::FilesystemType::Ext2);
ShowInfo (wxString::Format (L" %li) %s", filesystems.size() + 1, "Linux Ext3")); filesystems.push_back (VolumeCreationOptions::FilesystemType::Ext3);
ShowInfo (wxString::Format (L" %li) %s", filesystems.size() + 1, "Linux Ext4")); filesystems.push_back (VolumeCreationOptions::FilesystemType::Ext4);
ShowInfo (wxString::Format (L" %li) %s", filesystems.size() + 1, "NTFS")); filesystems.push_back (VolumeCreationOptions::FilesystemType::NTFS);
if (VolumeCreationOptions::FilesystemType::IsFsFormatterPresent (VolumeCreationOptions::FilesystemType::exFAT))
{
ShowInfo (wxString::Format (L" %li) %s", filesystems.size() + 1, "exFAT")); filesystems.push_back (VolumeCreationOptions::FilesystemType::exFAT);
}
if (VolumeCreationOptions::FilesystemType::IsFsFormatterPresent (VolumeCreationOptions::FilesystemType::Btrfs))
{
// minimum size to be able to format as Btrfs is 16777216 bytes
if (filesystemSize >= VC_MIN_SMALL_BTRFS_VOLUME_SIZE)
{
ShowInfo (wxString::Format (L" %li) %s", filesystems.size() + 1, "Btrfs")); filesystems.push_back (VolumeCreationOptions::FilesystemType::Btrfs);
}
}
#elif defined (TC_MACOSX)
ShowInfo (wxString::Format (L" %li) %s", filesystems.size() + 1, "Mac OS Extended")); filesystems.push_back (VolumeCreationOptions::FilesystemType::MacOsExt);
ShowInfo (wxString::Format (L" %li) %s", filesystems.size() + 1, "exFAT")); filesystems.push_back (VolumeCreationOptions::FilesystemType::exFAT);
if (wxPlatformInfo::Get().CheckOSVersion (10, 13))
{
ShowInfo (wxString::Format (L" %li) %s", filesystems.size() + 1, "APFS")); filesystems.push_back (VolumeCreationOptions::FilesystemType::APFS);
}
#elif defined (TC_FREEBSD) || defined (TC_SOLARIS)
ShowInfo (wxString::Format (L" %li) %s", filesystems.size() + 1, "UFS")); filesystems.push_back (VolumeCreationOptions::FilesystemType::UFS);
#endif
options->Filesystem = filesystems[AskSelection (filesystems.size(), 2) - 1];
}
}
if (options->Filesystem == VolumeCreationOptions::FilesystemType::FAT
&& (filesystemSize < TC_MIN_FAT_FS_SIZE || filesystemSize > TC_MAX_FAT_SECTOR_COUNT * options->SectorSize))
{
throw_err (_("Specified volume size cannot be used with FAT filesystem."));
}
if (options->Filesystem == VolumeCreationOptions::FilesystemType::Btrfs
&& (filesystemSize < VC_MIN_SMALL_BTRFS_VOLUME_SIZE))
{
throw_err (_("Specified volume size is too small to be used with Btrfs filesystem."));
}
// Password
if (!options->Password && !Preferences.NonInteractive)
{
ShowString (L"\n");
options->Password = AskPassword (_("Enter password"), true);
}
// PIM
if ((options->Pim < 0) && !Preferences.NonInteractive)
{
ShowString (L"\n");
options->Pim = AskPim (_("Enter PIM"));
}
// Keyfiles
if (!options->Keyfiles && !Preferences.NonInteractive)
{
ShowString (L"\n");
options->Keyfiles = AskKeyfiles (_("Enter keyfile path"));
}
if ((!options->Keyfiles || options->Keyfiles->empty())
&& (!options->Password || options->Password->IsEmpty()))
{
throw_err (_("Password cannot be empty when no keyfile is specified"));
}
// Random data
RandomNumberGenerator::Start();
/* force the display of the random enriching interface */
RandomNumberGenerator::SetEnrichedByUserStatus (false);
UserEnrichRandomPool();
ShowString (L"\n");
wxLongLong startTime = wxGetLocalTimeMillis();
VolumeCreator creator;
options->EMVSupportEnabled = true;
creator.CreateVolume (options);
bool volumeCreated = false;
while (!volumeCreated)
{
VolumeCreator::ProgressInfo progress = creator.GetProgressInfo();
wxLongLong timeDiff = wxGetLocalTimeMillis() - startTime;
if (timeDiff.GetValue() > 0)
{
uint64 speed = progress.SizeDone * 1000 / timeDiff.GetValue();
volumeCreated = !progress.CreationInProgress;
ShowString (wxString::Format (L"\rDone: %7.3f%% Speed: %9s Left: %s ",
100.0 - double (options->Size - progress.SizeDone) / (double (options->Size) / 100.0),
speed > 0 ? (const wchar_t*) SpeedToString (speed).c_str() : L" ",
speed > 0 ? (const wchar_t*) TimeSpanToString ((options->Size - progress.SizeDone) / speed).c_str() : L""));
}
Thread::Sleep (100);
}
ShowString (L"\n\n");
creator.CheckResult();
#ifdef TC_UNIX
if (options->Filesystem != VolumeCreationOptions::FilesystemType::None
&& options->Filesystem != VolumeCreationOptions::FilesystemType::FAT)
{
const char *fsFormatter = VolumeCreationOptions::FilesystemType::GetFsFormatter (options->Filesystem);
if (!fsFormatter)
throw ParameterIncorrect (SRC_POS);
MountOptions mountOptions (GetPreferences().DefaultMountOptions);
mountOptions.Path = make_shared <VolumePath> (options->Path);
mountOptions.NoFilesystem = true;
mountOptions.Protection = VolumeProtection::None;
mountOptions.Password = options->Password;
mountOptions.Pim = options->Pim;
mountOptions.Keyfiles = options->Keyfiles;
mountOptions.EMVSupportEnabled = true;
shared_ptr <VolumeInfo> volume = Core->MountVolume (mountOptions);
finally_do_arg (shared_ptr <VolumeInfo>, volume, { Core->DismountVolume (finally_arg, true); });
Thread::Sleep (2000); // Try to prevent race conditions caused by OS
// Temporarily take ownership of the device if the user is not an administrator
UserId origDeviceOwner ((uid_t) -1);
DevicePath virtualDevice = volume->VirtualDevice;
#ifdef TC_MACOSX
string virtualDeviceStr = virtualDevice;
if (virtualDeviceStr.find ("/dev/rdisk") != 0)
virtualDevice = "/dev/r" + virtualDeviceStr.substr (5);
#endif
try
{
File file;
file.Open (virtualDevice, File::OpenReadWrite);
}
catch (...)
{
if (!Core->HasAdminPrivileges())
{
origDeviceOwner = virtualDevice.GetOwner();
Core->SetFileOwner (virtualDevice, UserId (getuid()));
}
}
finally_do_arg2 (FilesystemPath, virtualDevice, UserId, origDeviceOwner,
{
if (finally_arg2.SystemId != (uid_t) -1)
Core->SetFileOwner (finally_arg, finally_arg2);
});
// Create filesystem
list <string> args;
if (options->Filesystem == VolumeCreationOptions::FilesystemType::MacOsExt && options->Size >= 10 * BYTES_PER_MB)
args.push_back ("-J");
// Perform a quick NTFS formatting
if (options->Filesystem == VolumeCreationOptions::FilesystemType::NTFS)
args.push_back ("-f");
if (options->Filesystem == VolumeCreationOptions::FilesystemType::Btrfs)
{
args.push_back ("-f");
if (filesystemSize < VC_MIN_LARGE_BTRFS_VOLUME_SIZE)
{
// use mixed mode for small BTRFS volumes
args.push_back ("-M");
}
}
args.push_back (string (virtualDevice));
Process::Execute (fsFormatter, args);
}
#endif // TC_UNIX
ShowInfo (options->Type == VolumeType::Hidden ? "HIDVOL_FORMAT_FINISHED_HELP" : "FORMAT_FINISHED_INFO");
}
void TextUserInterface::DeleteSecurityTokenKeyfiles () const
{
shared_ptr <KeyfileList> keyfiles = AskKeyfiles();
if (keyfiles->empty())
throw UserAbort();
foreach_ref (const Keyfile &keyfile, *keyfiles)
{
SecurityToken::DeleteKeyfile (TokenKeyfilePath (FilePath (keyfile)));
}
}
void TextUserInterface::DoShowError (const wxString &message) const
{
wcerr << L"Error: " << static_cast<wstring> (message) << endl;
}
void TextUserInterface::DoShowInfo (const wxString &message) const
{
wcout << static_cast<wstring> (message) << endl;
}
void TextUserInterface::DoShowString (const wxString &str) const
{
wcout << str.c_str() << flush;
}
void TextUserInterface::DoShowWarning (const wxString &message) const
{
wcerr << L"Warning: " << static_cast<wstring> (message) << endl;
}
void TextUserInterface::ExportTokenKeyfile () const
{
wstring keyfilePath = AskString (_("Enter token keyfile path: "));
if (keyfilePath.empty())
throw UserAbort (SRC_POS);
shared_ptr<TokenKeyfile> tokenKeyfile = Token::getTokenKeyfile(keyfilePath);
vector <byte> keyfileData;
tokenKeyfile->GetKeyfileData (keyfileData);
BufferPtr keyfileDataBuf (&keyfileData.front(), keyfileData.size());
finally_do_arg (BufferPtr, keyfileDataBuf, { finally_arg.Erase(); });
FilePath exportFilePath = AskFilePath();
if (exportFilePath.IsEmpty())
throw UserAbort (SRC_POS);
File keyfile;
keyfile.Open (exportFilePath, File::CreateWrite);
keyfile.Write (keyfileDataBuf);
}
shared_ptr <GetStringFunctor> TextUserInterface::GetAdminPasswordRequestHandler ()
{
struct AdminPasswordRequestHandler : public GetStringFunctor
{
AdminPasswordRequestHandler (TextUserInterface *userInterface) : UI (userInterface) { }
virtual void operator() (string &passwordStr)
{
UI->ShowString (_("Enter your user password or administrator password: "));
TextUserInterface::SetTerminalEcho (false);
finally_do ({ TextUserInterface::SetTerminalEcho (true); });
wstring wPassword (UI->ReadInputStreamLine());
finally_do_arg (wstring *, &wPassword, { StringConverter::Erase (*finally_arg); });
UI->ShowString (L"\n");
StringConverter::ToSingle (wPassword, passwordStr);
}
TextUserInterface *UI;
};
return shared_ptr <GetStringFunctor> (new AdminPasswordRequestHandler (this));
}
void TextUserInterface::ImportTokenKeyfiles () const
{
list <shared_ptr<TokenInfo>> tokens = Token::GetAvailableTokens();
if (tokens.empty())
throw_err (LangString ["NO_TOKENS_FOUND"]);
CK_SLOT_ID slotId;
if (tokens.size() == 1)
{
slotId = tokens.front()->SlotId;
}
else
{
foreach (const shared_ptr<TokenInfo> &token, tokens)
{
wstringstream tokenLabel;
tokenLabel << L"[" << token->SlotId << L"] " << LangString["TOKEN_SLOT_ID"].c_str() << L" " << token->SlotId << L" " << token->Label;
ShowInfo (tokenLabel.str());
}
slotId = (CK_SLOT_ID) AskSelection (tokens.back()->SlotId, tokens.front()->SlotId);
}
shared_ptr <KeyfileList> keyfiles;
if (CmdLine->ArgKeyfiles.get() && !CmdLine->ArgKeyfiles->empty())
keyfiles = CmdLine->ArgKeyfiles;
else if (!Preferences.NonInteractive)
{
keyfiles = AskKeyfiles();
if (keyfiles->empty())
throw UserAbort();
}
else
throw MissingArgument (SRC_POS);
foreach_ref (const Keyfile &keyfilePath, *keyfiles)
{
File keyfile;
keyfile.Open (keyfilePath, File::OpenRead, File::ShareReadWrite, File::PreserveTimestamps);
if (keyfile.Length() > 0)
{
vector <byte> keyfileData (keyfile.Length());
BufferPtr keyfileDataBuf (&keyfileData.front(), keyfileData.size());
keyfile.ReadCompleteBuffer (keyfileDataBuf);
finally_do_arg (BufferPtr, keyfileDataBuf, { finally_arg.Erase(); });
SecurityToken::CreateKeyfile (slotId, keyfileData, string (FilePath (keyfilePath).ToBaseName()));
}
else
throw InsufficientData (SRC_POS, FilePath (keyfilePath));
}
}
void TextUserInterface::InitSecurityTokenLibrary () const
{
if (Preferences.SecurityTokenModule.IsEmpty())
throw_err (LangString ["NO_PKCS11_MODULE_SPECIFIED"]);
struct PinRequestHandler : public GetPinFunctor
{
PinRequestHandler (const TextUserInterface *userInterface) : UI (userInterface) { }
virtual void operator() (string &passwordStr)
{
if (CmdLine->ArgTokenPin && CmdLine->ArgTokenPin->IsAllocated ())
{
passwordStr.clear();
passwordStr.insert (0, (char*) CmdLine->ArgTokenPin->Ptr (), CmdLine->ArgTokenPin->Size());
return;
}
if (UI->GetPreferences().NonInteractive)
throw MissingArgument (SRC_POS);
UI->ShowString (wxString::Format (LangString["ENTER_TOKEN_PASSWORD"], StringConverter::ToWide (passwordStr).c_str()) + L" ");
TextUserInterface::SetTerminalEcho (false);
finally_do ({ TextUserInterface::SetTerminalEcho (true); });
wstring wPassword (UI->ReadInputStreamLine());
finally_do_arg (wstring *, &wPassword, { StringConverter::Erase (*finally_arg); });
UI->ShowString (L"\n");
StringConverter::ToSingle (wPassword, passwordStr);
}
virtual void notifyIncorrectPin ()
{
if (CmdLine->ArgTokenPin && CmdLine->ArgTokenPin->IsAllocated ())
{
CmdLine->ArgTokenPin->Free ();
}
}
const TextUserInterface *UI;
};
struct WarningHandler : public SendExceptionFunctor
{
WarningHandler (const TextUserInterface *userInterface) : UI (userInterface) { }
virtual void operator() (const Exception &e)
{
UI->ShowError (e);
}
const TextUserInterface *UI;
};
try
{
SecurityToken::InitLibrary (Preferences.SecurityTokenModule, unique_ptr <GetPinFunctor> (new PinRequestHandler (this)), unique_ptr <SendExceptionFunctor> (new WarningHandler (this)));
}
catch (Exception &e)
{
ShowError (e);
throw_err (LangString ["PKCS11_MODULE_INIT_FAILED"]);
}
}
void TextUserInterface::ListTokenKeyfiles () const
{
foreach (const shared_ptr<TokenKeyfile> keyfile, Token::GetAvailableKeyfiles(true))
{
ShowString (wstring (TokenKeyfilePath (*keyfile)));
ShowString (L"\n");
}
}
void TextUserInterface::ListSecurityTokenKeyfiles () const
{
foreach (const TokenKeyfile &keyfile, SecurityToken::GetAvailableKeyfiles())
{
ShowString (wstring (TokenKeyfilePath (keyfile)));
ShowString (L"\n");
}
}
void TextUserInterface::ListEMVTokenKeyfiles () const
{
foreach (const TokenKeyfile &keyfile, EMVToken::GetAvailableKeyfiles())
{
ShowString (wstring (TokenKeyfilePath (keyfile)));
ShowString (L"\n");
}
}
VolumeInfoList TextUserInterface::MountAllDeviceHostedVolumes (MountOptions &options) const
{
while (true)
{
if (!options.Password)
options.Password = AskPassword();
if (options.Pim < 0)
options.Pim = AskPim (_("Enter PIM"));
if (!options.Keyfiles)
options.Keyfiles = AskKeyfiles();
options.EMVSupportEnabled = true;
VolumeInfoList mountedVolumes = UserInterface::MountAllDeviceHostedVolumes (options);
if (!mountedVolumes.empty())
return mountedVolumes;
options.Password.reset();
options.Pim = -1;
}
}
shared_ptr <VolumeInfo> TextUserInterface::MountVolume (MountOptions &options) const
{
shared_ptr <VolumeInfo> volume;
CheckRequirementsForMountingVolume();
// Volume path
while (!options.Path || options.Path->IsEmpty())
{
if (Preferences.NonInteractive)
throw MissingArgument (SRC_POS);
options.Path = AskVolumePath ();
}
if (Core->IsVolumeMounted (*options.Path))
{
ShowInfo (StringFormatter (LangString["VOLUME_ALREADY_MOUNTED"], wstring (*options.Path)));
return volume;
}
// Mount point
if (!options.MountPoint && !options.NoFilesystem)
options.MountPoint.reset (new DirectoryPath (AskString (_("Enter mount directory [default]: "))));
VolumePassword password;
KeyfileList keyfiles;
options.EMVSupportEnabled = true;
if ((!options.Password || options.Password->IsEmpty())
&& (!options.Keyfiles || options.Keyfiles->empty())
&& !Core->IsPasswordCacheEmpty())
{
// Cached password
try
{
volume = UserInterface::MountVolume (options);
}
catch (PasswordException&) { }
}
int incorrectPasswordCount = 0;
while (!volume)
{
// Password
if (!options.Password)
{
options.Password = AskPassword (StringFormatter (_("Enter password for {0}"), wstring (*options.Path)));
}
if (options.Pim < 0)
{
options.Pim = AskPim (StringFormatter (_("Enter PIM for {0}"), wstring (*options.Path)));
}
// Keyfiles
if (!options.Keyfiles)
options.Keyfiles = AskKeyfiles();
// Hidden volume protection
if (options.Protection == VolumeProtection::None
&& !CmdLine->ArgNoHiddenVolumeProtection
&& AskYesNo (_("Protect hidden volume (if any)?")))
options.Protection = VolumeProtection::HiddenVolumeReadOnly;
if (options.Protection == VolumeProtection::HiddenVolumeReadOnly)
{
if (!options.ProtectionPassword)
options.ProtectionPassword = AskPassword (_("Enter password for hidden volume"));
if (options.ProtectionPim < 0)
options.ProtectionPim = AskPim (_("Enter PIM for hidden volume"));
if (!options.ProtectionKeyfiles)
options.ProtectionKeyfiles = AskKeyfiles (_("Enter keyfile for hidden volume"));
}
try
{
volume = UserInterface::MountVolume (options);
}
catch (ProtectionPasswordIncorrect &e)
{
ShowInfo (e);
options.ProtectionPassword.reset();
options.ProtectionPim = -1;
}
catch (PasswordIncorrect &e)
{
if (++incorrectPasswordCount > 2 && !options.UseBackupHeaders)
{
// Try to mount the volume using the backup header
options.UseBackupHeaders = true;
try
{
volume = UserInterface::MountVolume (options);
ShowWarning ("HEADER_DAMAGED_AUTO_USED_HEADER_BAK");
}
catch (...)
{
options.UseBackupHeaders = false;
ShowInfo (e);
options.Password.reset();
options.Pim = -1;
}
}
else
{
ShowInfo (e);
options.Password.reset();
options.Pim = -1;
}
ShowString (L"\n");
}
catch (PasswordException &e)
{
ShowInfo (e);
options.Password.reset();
}
}
#ifdef TC_LINUX
if (!Preferences.NonInteractive && !Preferences.DisableKernelEncryptionModeWarning
&& volume->EncryptionModeName != L"XTS")
{
ShowWarning (LangString["ENCRYPTION_MODE_NOT_SUPPORTED_BY_KERNEL"]);
}
#endif
return volume;
}
bool TextUserInterface::OnInit ()
{
try
{
DefaultMessageOutput = new wxMessageOutputStderr;
wxMessageOutput::Set (DefaultMessageOutput);
InterfaceType = UserInterfaceType::Text;
Init();
}
catch (exception &e)
{
ShowError (e);
return false;
}
return true;
}
int TextUserInterface::OnRun()
{
try
{
if (ProcessCommandLine ())
{
Application::SetExitCode (0);
return 0;
}
}
catch (exception &e)
{
ShowError (e);
}
Application::SetExitCode (1);
return 1;
}
void TextUserInterface::OnSignal (int signal)
{
#ifdef TC_UNIX
try
{
SetTerminalEcho (true);
}
catch (...) { }
_exit (1);
#endif
}
void TextUserInterface::ReadInputStreamLine (wxString &line) const
{
if (!TextInputStream.get() || feof (stdin) || ferror (stdin))
throw UserAbort (SRC_POS);
line = TextInputStream->ReadLine();
if (ferror (stdin) || (line.empty() && feof (stdin)))
throw UserAbort (SRC_POS);
}
wxString TextUserInterface::ReadInputStreamLine () const
{
wxString line;
ReadInputStreamLine (line);
return line;
}
void TextUserInterface::RestoreVolumeHeaders (shared_ptr <VolumePath> volumePath) const
{
if (!volumePath)
volumePath = AskVolumePath();
if (!volumePath)
throw UserAbort (SRC_POS);
#ifdef TC_WINDOWS
if (Core->IsVolumeMounted (*volumePath))
throw_err (LangString["DISMOUNT_FIRST"]);
#endif
// Ask whether to restore internal or external backup
bool restoreInternalBackup;
shared_ptr <Pkcs5Kdf> kdf;
if (CmdLine->ArgHash)
{
kdf = Pkcs5Kdf::GetAlgorithm (*CmdLine->ArgHash);
}
ShowInfo (LangString["HEADER_RESTORE_EXTERNAL_INTERNAL"]);
ShowInfo (L"\n1) " + LangString["HEADER_RESTORE_INTERNAL"]);
ShowInfo (L"2) " + LangString["HEADER_RESTORE_EXTERNAL"] + L"\n");
switch (AskSelection (2))
{
case 1:
restoreInternalBackup = true;
break;
case 2:
restoreInternalBackup = false;
break;
default:
throw UserAbort (SRC_POS);
}
/* force the display of the random enriching interface */
RandomNumberGenerator::SetEnrichedByUserStatus (false);
if (restoreInternalBackup)
{
// Restore header from the internal backup
shared_ptr <Volume> volume;
MountOptions options;
options.Path = volumePath;
options.EMVSupportEnabled = true;
while (!volume)
{
ShowString (L"\n");
options.Password = AskPassword();
options.Pim = AskPim();
options.Keyfiles = AskKeyfiles();
try
{
volume = Core->OpenVolume (
options.Path,
options.PreserveTimestamps,
options.Password,
options.Pim,
kdf,
options.Keyfiles,
options.EMVSupportEnabled,
options.Protection,
options.ProtectionPassword,
options.ProtectionPim,
options.ProtectionKdf,
options.ProtectionKeyfiles,
options.SharedAccessAllowed,
VolumeType::Unknown,
true
);
}
catch (PasswordException &e)
{
ShowInfo (e);
}
}
shared_ptr <VolumeLayout> layout = volume->GetLayout();
if (typeid (*layout) == typeid (VolumeLayoutV1Normal))
{
throw_err (LangString ["VOLUME_HAS_NO_BACKUP_HEADER"]);
}
RandomNumberGenerator::Start();
UserEnrichRandomPool();
// Re-encrypt volume header
SecureBuffer newHeaderBuffer (volume->GetLayout()->GetHeaderSize());
Core->ReEncryptVolumeHeaderWithNewSalt (newHeaderBuffer, volume->GetHeader(), options.Password, options.Pim, options.Keyfiles, options.EMVSupportEnabled);
// Write volume header
int headerOffset = volume->GetLayout()->GetHeaderOffset();
shared_ptr <File> volumeFile = volume->GetFile();
if (headerOffset >= 0)
volumeFile->SeekAt (headerOffset);
else
volumeFile->SeekEnd (headerOffset);
volumeFile->Write (newHeaderBuffer);
}
else
{
// Restore header from an external backup
wxString confirmMsg = L"\n\n" + LangString["CONFIRM_VOL_HEADER_RESTORE"];
if (!AskYesNo (wxString::Format (confirmMsg, wstring (*volumePath).c_str()), true, true))
return;
ShowString (L"\n");
FilePath filePath = AskFilePath();
if (filePath.IsEmpty())
throw UserAbort (SRC_POS);
File backupFile;
backupFile.Open (filePath, File::OpenRead);
bool legacyBackup;
// Determine the format of the backup file
switch (backupFile.Length())
{
case TC_VOLUME_HEADER_GROUP_SIZE:
legacyBackup = false;
break;
case TC_VOLUME_HEADER_SIZE_LEGACY * 2:
legacyBackup = true;
break;
default:
throw_err (LangString ["HEADER_BACKUP_SIZE_INCORRECT"]);
}
// Open the volume header stored in the backup file
MountOptions options;
options.EMVSupportEnabled = true;
shared_ptr <VolumeLayout> decryptedLayout;
while (!decryptedLayout)
{
options.Password = AskPassword (L"\n" + LangString["ENTER_HEADER_BACKUP_PASSWORD"]);
options.Pim = AskPim (_("Enter PIM"));
options.Keyfiles = AskKeyfiles();
try
{
// Test volume layouts
foreach (shared_ptr <VolumeLayout> layout, VolumeLayout::GetAvailableLayouts ())
{
if (layout->HasDriveHeader())
continue;
if (!legacyBackup && (typeid (*layout) == typeid (VolumeLayoutV1Normal)))
continue;
if (legacyBackup && (typeid (*layout) == typeid (VolumeLayoutV2Normal) || typeid (*layout) == typeid (VolumeLayoutV2Hidden)))
continue;
SecureBuffer headerBuffer (layout->GetHeaderSize());
backupFile.ReadAt (headerBuffer, layout->GetType() == VolumeType::Hidden ? layout->GetHeaderSize() : 0);
// Decrypt header
shared_ptr <VolumePassword> passwordKey = Keyfile::ApplyListToPassword (options.Keyfiles, options.Password, options.EMVSupportEnabled);
if (layout->GetHeader()->Decrypt (headerBuffer, *passwordKey, options.Pim, kdf, layout->GetSupportedKeyDerivationFunctions(), layout->GetSupportedEncryptionAlgorithms(), layout->GetSupportedEncryptionModes()))
{
decryptedLayout = layout;
break;
}
}
if (!decryptedLayout)
throw PasswordIncorrect (SRC_POS);
}
catch (PasswordException &e)
{
ShowWarning (e);
}
}
File volumeFile;
volumeFile.Open (*volumePath, File::OpenReadWrite, File::ShareNone, File::PreserveTimestamps);
RandomNumberGenerator::Start();
UserEnrichRandomPool();
// Re-encrypt volume header
SecureBuffer newHeaderBuffer (decryptedLayout->GetHeaderSize());
Core->ReEncryptVolumeHeaderWithNewSalt (newHeaderBuffer, decryptedLayout->GetHeader(), options.Password, options.Pim, options.Keyfiles, options.EMVSupportEnabled);
// Write volume header
int headerOffset = decryptedLayout->GetHeaderOffset();
if (headerOffset >= 0)
volumeFile.SeekAt (headerOffset);
else
volumeFile.SeekEnd (headerOffset);
volumeFile.Write (newHeaderBuffer);
if (decryptedLayout->HasBackupHeader())
{
// Re-encrypt backup volume header
Core->ReEncryptVolumeHeaderWithNewSalt (newHeaderBuffer, decryptedLayout->GetHeader(), options.Password, options.Pim, options.Keyfiles, options.EMVSupportEnabled);
// Write backup volume header
headerOffset = decryptedLayout->GetBackupHeaderOffset();
if (headerOffset >= 0)
volumeFile.SeekAt (headerOffset);
else
volumeFile.SeekEnd (headerOffset);
volumeFile.Write (newHeaderBuffer);
}
}
ShowString (L"\n");
ShowInfo ("VOL_HEADER_RESTORED");
}
void TextUserInterface::SetTerminalEcho (bool enable)
{
if (CmdLine->ArgDisplayPassword)
return;
#ifdef TC_UNIX
struct termios termAttr;
if (tcgetattr (0, &termAttr) == 0)
{
if (!enable)
{
termAttr.c_lflag &= ~ECHO;
throw_sys_if (tcsetattr (0, TCSANOW, &termAttr) != 0);
}
else
{
termAttr.c_lflag |= ECHO;
throw_sys_if (tcsetattr (0, TCSANOW, &termAttr) != 0);
}
}
#endif
}
void TextUserInterface::UserEnrichRandomPool () const
{
RandomNumberGenerator::Start();
if (RandomNumberGenerator::IsEnrichedByUser())
return;
if (CmdLine->ArgHash)
RandomNumberGenerator::SetHash (CmdLine->ArgHash);
if (!CmdLine->ArgRandomSourcePath.IsEmpty())
{
SecureBuffer buffer (RandomNumberGenerator::PoolSize);
File randSourceFile;
randSourceFile.Open (CmdLine->ArgRandomSourcePath, File::OpenRead);
for (size_t i = 0; i < buffer.Size(); ++i)
{
if (randSourceFile.Read (buffer.GetRange (i, 1)) < 1)
break;
}
RandomNumberGenerator::AddToPool (buffer);
RandomNumberGenerator::SetEnrichedByUserStatus (true);
}
else if (!Preferences.NonInteractive)
{
int randCharsRequired = RandomNumberGenerator::PoolSize;
ShowInfo (StringFormatter (_("\nPlease type at least {0} randomly chosen characters and then press Enter:"), randCharsRequired));
SetTerminalEcho (false);
finally_do ({ TextUserInterface::SetTerminalEcho (true); });
while (randCharsRequired > 0)
{
wstring randStr = AskString();
RandomNumberGenerator::AddToPool (ConstBufferPtr ((byte *) randStr.c_str(), randStr.size() * sizeof (wchar_t)));
randCharsRequired -= randStr.size();
if (randCharsRequired > 0)
ShowInfo (StringFormatter (_("Characters remaining: {0}"), randCharsRequired));
}
ShowString (L"\n");
RandomNumberGenerator::SetEnrichedByUserStatus (true);
}
}
wxMessageOutput *DefaultMessageOutput;
}
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