monero/src/wallet/password_container.h

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// Copyright (c) 2014-2016, The Monero Project
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//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
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#pragma once
#include <string>
#include <boost/optional/optional.hpp>
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namespace tools
{
class password_container
{
public:
static constexpr const size_t max_password_size = 1024;
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//! Empty password
password_container() noexcept;
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//! `password` is used as password
password_container(std::string&& password) noexcept;
//! \return A password from stdin TTY prompt or `std::cin` pipe.
static boost::optional<password_container> prompt(bool verify, const char *mesage = "Password");
password_container(const password_container&) = delete;
password_container(password_container&& rhs) = default;
//! Wipes internal password
~password_container() noexcept;
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password_container& operator=(const password_container&) = delete;
password_container& operator=(password_container&&) = default;
const std::string& password() const noexcept { return m_password; }
private:
//! TODO Custom allocator that locks to RAM?
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std::string m_password;
};
}