100 lines
3.4 KiB
C++
100 lines
3.4 KiB
C++
/*
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* Portable Agile C++ Classes (PACC)
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* Copyright (C) 2001-2003 by Marc Parizeau
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* http://manitou.gel.ulaval.ca/~parizeau/PACC
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Contact:
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* Laboratoire de Vision et Systemes Numeriques
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* Departement de genie electrique et de genie informatique
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* Universite Laval, Quebec, Canada, G1K 7P4
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* http://vision.gel.ulaval.ca
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*
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*/
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/*!
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* \file PACC/Socket/Address.cpp
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* \brief Class methods for the portable network address.
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* \author Marc Parizeau, Laboratoire de vision et systèmes numériques, Université Laval
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* $Revision: 1.5.2.1 $
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* $Date: 2007/09/10 18:24:09 $
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*/
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#include "Socket/Address.hpp"
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#include "Socket/Exception.hpp"
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#include "Util/Tokenizer.hpp"
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#include "Util/StringFunc.hpp"
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#include <sstream>
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#ifdef WIN32
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///////////// specifics for windows /////////////
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#include <winsock2.h>
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#else
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///////////// specifics for unixes /////////////
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#endif
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using namespace std;
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using namespace PACC;
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/*!
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This method is a helper constructor that parses a tipical "host:port" string. The host name can be either an IP address (e.g. 198.137.240.92) or an internet address (e.g. whitehouse.gov). Any error raises a Socket::exception.
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*/
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Socket::Address::Address(const string& inHostPort)
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{
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istringstream lStream(inHostPort);
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Tokenizer lTokenizer(lStream);
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lTokenizer.setDelimiters(" \t\n\r",":");
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string lHost = lTokenizer.getNextToken();
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if(lTokenizer.getNextToken() != ":") throw Exception(eOtherError, "Address::address() invalid host:port string");
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mPortNumber = String::convertToInteger(lTokenizer.getNextToken());
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lookupHost(lHost);
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}
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/*!
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Determines the IP address (e.g. 198.137.240.92) or internet name (e.g. whitehouse.gov) of host \c inHost. Any error raises a Socket::exception.
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*/
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void Socket::Address::lookupHost(const string& inHost)
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{
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#ifdef WIN32
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WSADATA wsdata;
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if (WSAStartup(MAKEWORD(2,2), &wsdata) != 0) {
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throw Exception(eOtherError, "Address::address() failed to load WinSock2");
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}
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#endif
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struct hostent* lHost;
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unsigned lIP;
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if((lIP = inet_addr(inHost.c_str())) != INADDR_NONE) {
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// name is an IP address
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mIPAddress = inHost;
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// get corresponding host name
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lHost = ::gethostbyaddr((char*)&lIP, sizeof(lIP), AF_INET);
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if(lHost != 0) mHostName = lHost->h_name;
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else mHostName = inHost;
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} else {
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// name is a host; retrieve IP address
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mHostName = inHost;
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lHost = ::gethostbyname(inHost.c_str());
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if(lHost == 0) throw Exception(eOtherError, string("Address::lookupHost() unable to lookup address for host ")+inHost);
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mIPAddress = inet_ntoa(*((struct in_addr*)lHost->h_addr));
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}
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}
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