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// Copyright (c) 2014, The Monero Project
//
// 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
#pragma once
#include <mutex>
#include <system_error>
#include <boost/filesystem.hpp>
#include "crypto/crypto.h"
#include "crypto/hash.h"
#include "misc_language.h"
#include "p2p/p2p_protocol_defs.h"
/*! \brief Various Tools
*
*
*
*/
namespace tools
{
/*! \brief Returns the default data directory.
*
* \details Windows < Vista: C:\\Documents and Settings\\Username\\Application Data\\CRYPTONOTE_NAME
*
* Windows >= Vista: C:\\Users\\Username\\AppData\\Roaming\\CRYPTONOTE_NAME
*
* Mac: ~/Library/Application Support/CRYPTONOTE_NAME
*
* Unix: ~/.CRYPTONOTE_NAME
*/
std::string get_default_data_dir();
/*! \breif Returns the OS version string
*
* \details This is a wrapper around the primitives
* get_windows_version_display_string() and
* get_nix_version_display_string()
*/
std::string get_os_version_string();
/*! \breif creates directories for a path
*
* wrapper around boost::filesyste::create_directories.
* (ensure-directory-exists): greenspun's tenth rule in action!
*/
bool create_directories_if_necessary(const std::string& path);
/*! \brief std::rename wrapper for nix and something strange for windows.
*/
std::error_code replace_file(const std::string& replacement_name, const std::string& replaced_name);
inline crypto::hash get_proof_of_trust_hash(const nodetool::proof_of_trust& pot)
{
std::string s;
s.append(reinterpret_cast<const char*>(&pot.peer_id), sizeof(pot.peer_id));
s.append(reinterpret_cast<const char*>(&pot.time), sizeof(pot.time));
return crypto::cn_fast_hash(s.data(), s.size());
}
/*! \breif Defines a signal handler for win32 and *nix
*/
class signal_handler
{
public:
/*! \brief installs a signal handler */
template<typename T>
static bool install(T t)
{
#if defined(WIN32)
bool r = TRUE == ::SetConsoleCtrlHandler(&win_handler, TRUE);
if (r)
{
m_handler = t;
}
return r;
#else
/* Only blocks SIGINT and SIGTERM */
signal(SIGINT, posix_handler);
signal(SIGTERM, posix_handler);
m_handler = t;
return true;
#endif
}
private:
#if defined(WIN32)
/*! \breif Handler for win */
static BOOL WINAPI win_handler(DWORD type)
{
if (CTRL_C_EVENT == type || CTRL_BREAK_EVENT == type)
{
handle_signal();
}
else
{
LOG_PRINT_RED_L0("Got control signal " << type << ". Exiting without saving...");
return FALSE;
}
return TRUE;
}
#else
/*! \breif handler for NIX */
static void posix_handler(int /*type*/)
{
handle_signal();
}
#endif
/*! \breif calles m_handler */
static void handle_signal()
{
static std::mutex m_mutex;
std::unique_lock<std::mutex> lock(m_mutex);
m_handler();
}
/*! \breif where the installed handler is stored */
static std::function<void(void)> m_handler;
};
}
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