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/*
RailControl - Model Railway Control Software
Copyright (c) 2017-2025 by Teddy / Dominik Mahrer - www.railcontrol.org
RailControl is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 3, or (at your option) any
later version.
RailControl is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with RailControl; see the file LICENCE. If not see
<http://www.gnu.org/licenses/>.
*/
#include <arpa/inet.h>
#include <cstring>
#include <netdb.h>
#include "Utils/Network.h"
using std::string;
namespace Utils
{
string Network::AddressToString(const struct sockaddr_storage *sockaddr)
{
char buffer[40] = { 0 };
unsigned short port = 0;
switch(sockaddr->ss_family) {
case AF_INET:
{
const struct sockaddr_in* sa4 = reinterpret_cast<const struct sockaddr_in*>(sockaddr);
inet_ntop(AF_INET, &(sa4->sin_addr), buffer, sizeof(buffer));
port = ntohs(sa4->sin_port);
break;
}
case AF_INET6:
{
const struct sockaddr_in6* sa6 = reinterpret_cast<const struct sockaddr_in6*>(sockaddr);
inet_ntop(AF_INET6, &(sa6->sin6_addr), buffer, sizeof(buffer));
port = ntohs(sa6->sin6_port);
break;
}
default:
break;
}
return string("[") + string(buffer) + string("]:") + std::to_string(port);
}
bool Network::CompareAddresses(const struct sockaddr_storage *address1, const struct sockaddr_storage *address2)
{
const unsigned short family = (reinterpret_cast<const struct sockaddr*>(address1))->sa_family;
if (family != (reinterpret_cast<const struct sockaddr*>(address2))->sa_family)
{
return false;
}
switch (family)
{
case AF_INET:
{
const struct sockaddr_in* inet1 = reinterpret_cast<const struct sockaddr_in*>(address1);
const struct sockaddr_in* inet2 = reinterpret_cast<const struct sockaddr_in*>(address2);
if (inet1->sin_port != inet2->sin_port)
{
return false;
}
return (0 == memcmp(&(inet1->sin_addr), &(inet2->sin_addr), sizeof(inet1->sin_addr)));
}
case AF_INET6:
{
const struct sockaddr_in6* inet1 = reinterpret_cast<const struct sockaddr_in6*>(address1);
const struct sockaddr_in6* inet2 = reinterpret_cast<const struct sockaddr_in6*>(address2);
if (inet1->sin6_port != inet2->sin6_port)
{
return false;
}
return (0 == memcmp(&(inet1->sin6_addr), &(inet2->sin6_addr), sizeof(inet1->sin6_addr)));
}
default:
return false;
}
}
bool Network::HostResolves(const string& host)
{
struct addrinfo hints;
memset(&hints, 0, sizeof(hints));
hints.ai_family = PF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags |= AI_CANONNAME;
struct addrinfo* res;
struct addrinfo* result;
int errcode = getaddrinfo(host.c_str(), NULL, &hints, &result);
if (errcode != 0)
{
return false;
}
res = result;
while (res)
{
char addrstr[100];
inet_ntop(res->ai_family, res->ai_addr->sa_data, addrstr, sizeof(addrstr));
switch (res->ai_family)
{
case AF_INET:
case AF_INET6:
freeaddrinfo(result);
return true;
default:
res = res->ai_next;
break;
}
}
freeaddrinfo(result);
return false;
}
} // namespace Utils
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