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https://github.com/monero-project/monero.git
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70271fa788
This class will allow mlocking small objects, of which there may be several per page. It adds refcounting so pages are only munlocked when the last object on that page munlocks.
428 lines
13 KiB
C++
428 lines
13 KiB
C++
// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of the Andrey N. Sabelnikov nor the
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// names of its contributors may be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER BE LIABLE FOR ANY
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// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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#ifndef _STRING_TOOLS_H_
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#define _STRING_TOOLS_H_
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// Previously pulled in by ASIO, further cleanup still required ...
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#ifdef _WIN32
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# include <winsock2.h>
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# include <windows.h>
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#endif
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#include <string.h>
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#include <locale>
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#include <cstdlib>
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#include <string>
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#include <type_traits>
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#include <boost/uuid/uuid.hpp>
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#include <boost/uuid/uuid_io.hpp>
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#include <boost/lexical_cast.hpp>
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#include <boost/algorithm/string/predicate.hpp>
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#include "hex.h"
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#include "memwipe.h"
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#include "mlocker.h"
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#include "span.h"
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#include "warnings.h"
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#ifndef OUT
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#define OUT
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#endif
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#ifdef WINDOWS_PLATFORM
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#pragma comment (lib, "Rpcrt4.lib")
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#endif
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namespace epee
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{
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namespace string_tools
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{
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//----------------------------------------------------------------------------
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inline std::string get_str_from_guid_a(const boost::uuids::uuid& rid)
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{
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return boost::lexical_cast<std::string>(rid);
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}
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//----------------------------------------------------------------------------
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inline bool get_guid_from_string(OUT boost::uuids::uuid& inetifer, const std::string& str_id)
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{
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std::string local_str_id = str_id;
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if(local_str_id.size() < 36)
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return false;
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if('{' == *local_str_id.begin())
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local_str_id.erase(0, 1);
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if('}' == *(--local_str_id.end()))
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local_str_id.erase(--local_str_id.end());
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try
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{
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inetifer = boost::lexical_cast<boost::uuids::uuid>(local_str_id);
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return true;
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}
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catch(...)
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{
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return false;
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}
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}
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//----------------------------------------------------------------------------
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inline std::string buff_to_hex_nodelimer(const std::string& src)
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{
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return to_hex::string(to_byte_span(to_span(src)));
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}
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//----------------------------------------------------------------------------
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template<class CharT>
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bool parse_hexstr_to_binbuff(const std::basic_string<CharT>& s, std::basic_string<CharT>& res, bool allow_partial_byte = false)
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{
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res.clear();
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if (!allow_partial_byte && (s.size() & 1))
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return false;
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try
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{
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long v = 0;
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for(size_t i = 0; i < (s.size() + 1) / 2; i++)
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{
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CharT byte_str[3];
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size_t copied = s.copy(byte_str, 2, 2 * i);
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byte_str[copied] = CharT(0);
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CharT* endptr;
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v = strtoul(byte_str, &endptr, 16);
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if (v < 0 || 0xFF < v || endptr != byte_str + copied)
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{
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return false;
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}
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res.push_back(static_cast<unsigned char>(v));
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}
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return true;
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}catch(...)
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{
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return false;
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}
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}
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//----------------------------------------------------------------------------
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template<class t_pod_type>
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bool parse_tpod_from_hex_string(const std::string& str_hash, t_pod_type& t_pod)
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{
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static_assert(std::is_pod<t_pod_type>::value, "expected pod type");
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std::string buf;
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bool res = epee::string_tools::parse_hexstr_to_binbuff(str_hash, buf);
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if (!res || buf.size() != sizeof(t_pod_type))
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{
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return false;
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}
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else
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{
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buf.copy(reinterpret_cast<char *>(&t_pod), sizeof(t_pod_type));
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return true;
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}
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}
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//----------------------------------------------------------------------------
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PUSH_WARNINGS
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DISABLE_GCC_WARNING(maybe-uninitialized)
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template<class XType>
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inline bool get_xtype_from_string(OUT XType& val, const std::string& str_id)
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{
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if (std::is_integral<XType>::value && !std::numeric_limits<XType>::is_signed && !std::is_same<XType, bool>::value)
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{
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for (char c : str_id)
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{
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if (!std::isdigit(c))
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return false;
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}
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}
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try
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{
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val = boost::lexical_cast<XType>(str_id);
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return true;
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}
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catch(const std::exception& /*e*/)
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{
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//const char* pmsg = e.what();
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return false;
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}
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catch(...)
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{
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return false;
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}
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return true;
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}
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POP_WARNINGS
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//----------------------------------------------------------------------------
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template<class XType>
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inline bool xtype_to_string(const XType& val, std::string& str)
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{
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try
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{
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str = boost::lexical_cast<std::string>(val);
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}
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catch(...)
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{
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return false;
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}
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return true;
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}
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//----------------------------------------------------------------------------
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std::string get_ip_string_from_int32(uint32_t ip);
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//----------------------------------------------------------------------------
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bool get_ip_int32_from_string(uint32_t& ip, const std::string& ip_str);
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//----------------------------------------------------------------------------
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inline bool parse_peer_from_string(uint32_t& ip, uint16_t& port, const std::string& addres)
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{
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//parse ip and address
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std::string::size_type p = addres.find(':');
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std::string ip_str, port_str;
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if(p == std::string::npos)
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{
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port = 0;
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ip_str = addres;
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}
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else
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{
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ip_str = addres.substr(0, p);
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port_str = addres.substr(p+1, addres.size());
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}
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if(!get_ip_int32_from_string(ip, ip_str))
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{
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return false;
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}
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if(p != std::string::npos && !get_xtype_from_string(port, port_str))
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{
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return false;
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}
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return true;
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}
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inline std::string num_to_string_fast(int64_t val)
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{
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/*
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char buff[30] = {0};
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i64toa_s(val, buff, sizeof(buff)-1, 10);
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return buff;*/
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return boost::lexical_cast<std::string>(val);
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}
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//----------------------------------------------------------------------------
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inline bool compare_no_case(const std::string& str1, const std::string& str2)
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{
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return !boost::iequals(str1, str2);
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}
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//----------------------------------------------------------------------------
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inline std::string& get_current_module_name()
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{
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static std::string module_name;
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return module_name;
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}
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//----------------------------------------------------------------------------
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inline std::string& get_current_module_folder()
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{
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static std::string module_folder;
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return module_folder;
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}
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//----------------------------------------------------------------------------
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#ifdef _WIN32
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inline std::string get_current_module_path()
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{
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char pname [5000] = {0};
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GetModuleFileNameA( NULL, pname, sizeof(pname));
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pname[sizeof(pname)-1] = 0; //be happy ;)
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return pname;
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}
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#endif
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//----------------------------------------------------------------------------
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inline bool set_module_name_and_folder(const std::string& path_to_process_)
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{
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std::string path_to_process = path_to_process_;
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#ifdef _WIN32
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path_to_process = get_current_module_path();
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#endif
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std::string::size_type a = path_to_process.rfind( '\\' );
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if(a == std::string::npos )
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{
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a = path_to_process.rfind( '/' );
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}
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if ( a != std::string::npos )
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{
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get_current_module_name() = path_to_process.substr(a+1, path_to_process.size());
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get_current_module_folder() = path_to_process.substr(0, a);
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return true;
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}else
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return false;
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}
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//----------------------------------------------------------------------------
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inline bool trim_left(std::string& str)
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{
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for(std::string::iterator it = str.begin(); it!= str.end() && isspace(static_cast<unsigned char>(*it));)
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str.erase(str.begin());
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return true;
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}
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//----------------------------------------------------------------------------
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inline bool trim_right(std::string& str)
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{
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for(std::string::reverse_iterator it = str.rbegin(); it!= str.rend() && isspace(static_cast<unsigned char>(*it));)
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str.erase( --((it++).base()));
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return true;
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}
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//----------------------------------------------------------------------------
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inline std::string& trim(std::string& str)
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{
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trim_left(str);
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trim_right(str);
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return str;
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}
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//----------------------------------------------------------------------------
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inline std::string trim(const std::string& str_)
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{
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std::string str = str_;
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trim_left(str);
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trim_right(str);
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return str;
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}
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//----------------------------------------------------------------------------
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inline std::string pad_string(std::string s, size_t n, char c = ' ', bool prepend = false)
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{
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if (s.size() < n)
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{
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if (prepend)
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s = std::string(n - s.size(), c) + s;
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else
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s.append(n - s.size(), c);
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}
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return s;
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}
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//----------------------------------------------------------------------------
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template<class t_pod_type>
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std::string pod_to_hex(const t_pod_type& s)
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{
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static_assert(std::is_standard_layout<t_pod_type>(), "expected standard layout type");
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return to_hex::string(as_byte_span(s));
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}
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//----------------------------------------------------------------------------
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template<class t_pod_type>
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bool hex_to_pod(const std::string& hex_str, t_pod_type& s)
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{
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static_assert(std::is_pod<t_pod_type>::value, "expected pod type");
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std::string hex_str_tr = trim(hex_str);
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if(sizeof(s)*2 != hex_str.size())
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return false;
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std::string bin_buff;
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if(!parse_hexstr_to_binbuff(hex_str_tr, bin_buff))
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return false;
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if(bin_buff.size()!=sizeof(s))
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return false;
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s = *(t_pod_type*)bin_buff.data();
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return true;
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}
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//----------------------------------------------------------------------------
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template<class t_pod_type>
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bool hex_to_pod(const std::string& hex_str, tools::scrubbed<t_pod_type>& s)
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{
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return hex_to_pod(hex_str, unwrap(s));
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}
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//----------------------------------------------------------------------------
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template<class t_pod_type>
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bool hex_to_pod(const std::string& hex_str, epee::mlocked<t_pod_type>& s)
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{
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return hex_to_pod(hex_str, unwrap(s));
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}
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//----------------------------------------------------------------------------
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bool validate_hex(uint64_t length, const std::string& str);
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//----------------------------------------------------------------------------
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inline std::string get_extension(const std::string& str)
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{
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std::string res;
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std::string::size_type pos = str.rfind('.');
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if(std::string::npos == pos)
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return res;
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res = str.substr(pos+1, str.size()-pos);
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return res;
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}
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//----------------------------------------------------------------------------
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inline std::string cut_off_extension(const std::string& str)
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{
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std::string res;
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std::string::size_type pos = str.rfind('.');
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if(std::string::npos == pos)
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return str;
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res = str.substr(0, pos);
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return res;
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}
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//----------------------------------------------------------------------------
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#ifdef _WIN32
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inline std::wstring utf8_to_utf16(const std::string& str)
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{
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if (str.empty())
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return {};
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int wstr_size = MultiByteToWideChar(CP_UTF8, 0, &str[0], str.size(), NULL, 0);
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if (wstr_size == 0)
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{
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throw std::runtime_error(std::error_code(GetLastError(), std::system_category()).message());
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}
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std::wstring wstr(wstr_size, wchar_t{});
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if (!MultiByteToWideChar(CP_UTF8, 0, &str[0], str.size(), &wstr[0], wstr_size))
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{
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throw std::runtime_error(std::error_code(GetLastError(), std::system_category()).message());
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}
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return wstr;
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}
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inline std::string utf16_to_utf8(const std::wstring& wstr)
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{
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if (wstr.empty())
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return {};
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int str_size = WideCharToMultiByte(CP_UTF8, 0, &wstr[0], wstr.size(), NULL, 0, NULL, NULL);
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if (str_size == 0)
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{
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throw std::runtime_error(std::error_code(GetLastError(), std::system_category()).message());
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}
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std::string str(str_size, char{});
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if (!WideCharToMultiByte(CP_UTF8, 0, &wstr[0], wstr.size(), &str[0], str_size, NULL, NULL))
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{
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throw std::runtime_error(std::error_code(GetLastError(), std::system_category()).message());
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}
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return str;
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}
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#endif
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}
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}
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#endif //_STRING_TOOLS_H_
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