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138 lines
3.6 KiB
C++
138 lines
3.6 KiB
C++
/*****************************************************************************
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* Author: Valient Gough <vgough@pobox.com>
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*
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*****************************************************************************
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* Copyright (c) 2010 Valient Gough
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*
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* This program is free software: you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
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* for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _FSConfig_incl_
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#define _FSConfig_incl_
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#include <memory>
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#include <string>
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#include <vector>
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#include "CipherKey.h"
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#include "Interface.h"
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#include "encfs.h"
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namespace encfs {
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enum ConfigType {
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Config_None = 0,
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Config_Prehistoric,
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Config_V3,
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Config_V4,
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Config_V5,
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Config_V6
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};
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struct EncFS_Opts;
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class Cipher;
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class NameIO;
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/**
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* Persistent configuration (stored in config file .encfs6.xml)
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*/
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struct EncFSConfig {
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ConfigType cfgType;
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std::string creator;
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int subVersion;
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// interface of cipher
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Interface cipherIface;
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// interface used for file name coding
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Interface nameIface;
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int keySize; // reported in bits
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int blockSize; // reported in bytes
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std::vector<unsigned char> keyData;
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std::vector<unsigned char> salt;
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int kdfIterations;
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long desiredKDFDuration;
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int blockMACBytes; // MAC headers on blocks..
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int blockMACRandBytes; // number of random bytes in the block header
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bool uniqueIV; // per-file Initialization Vector
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bool externalIVChaining; // IV seeding by filename IV chaining
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bool chainedNameIV; // filename IV chaining
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bool allowHoles; // allow holes in files (implicit zero blocks)
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EncFSConfig() : keyData(), salt() {
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cfgType = Config_None;
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subVersion = 0;
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blockMACBytes = 0;
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blockMACRandBytes = 0;
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uniqueIV = false;
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externalIVChaining = false;
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chainedNameIV = false;
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allowHoles = false;
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kdfIterations = 0;
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desiredKDFDuration = 500;
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}
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CipherKey getUserKey(bool useStdin);
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CipherKey getUserKey(const std::string &passwordProgram,
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const std::string &rootDir);
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CipherKey getNewUserKey();
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std::shared_ptr<Cipher> getCipher() const;
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// deprecated
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void assignKeyData(const std::string &in);
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void assignKeyData(unsigned char *data, int length);
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void assignSaltData(unsigned char *data, int length);
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unsigned char *getKeyData() const;
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unsigned char *getSaltData() const;
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private:
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CipherKey makeKey(const char *password, int passwdLen);
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};
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// helpers for serializing to/from a stream
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std::ostream &operator<<(std::ostream &os, const EncFSConfig &cfg);
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std::istream &operator>>(std::istream &os, EncFSConfig &cfg);
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struct FSConfig {
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std::shared_ptr<EncFSConfig> config;
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std::shared_ptr<EncFS_Opts> opts;
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std::shared_ptr<Cipher> cipher;
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CipherKey key;
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std::shared_ptr<NameIO> nameCoding;
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bool forceDecode; // force decode on MAC block failures
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bool reverseEncryption; // reverse encryption operation
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bool idleTracking; // turn on idle monitoring of filesystem
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FSConfig()
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: forceDecode(false), reverseEncryption(false), idleTracking(false) {}
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};
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typedef std::shared_ptr<FSConfig> FSConfigPtr;
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} // namespace encfs
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#endif
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