SocketAddress.h

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//=============================================================================
//  Computational Process Networks class library
//  Copyright (C) 1997-2006  Gregory E. Allen and The University of Texas
//
//  This library is free software; you can redistribute it and/or modify it
//  under the terms of the GNU Library General Public License as published
//  by the Free Software Foundation; either version 2 of the License, or
//  (at your option) any later version.
//
//  This library 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
//  Library General Public License for more details.
//
//  The GNU Public License is available in the file LICENSE, or you
//  can write to the Free Software Foundation, Inc., 59 Temple Place -
//  Suite 330, Boston, MA 02111-1307, USA, or you can find it on the
//  World Wide Web at http://www.fsf.org.
//=============================================================================
#ifndef SOCKETADDRESS_H
#define SOCKETADDRESS_H
#pragma once
#include <cpn/common.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/un.h>
#include <netdb.h>
#include <vector>
#include <string>

class SocketAddress;

typedef std::vector<SocketAddress> SockAddrList;

class SocketAddress {
public:

    enum Type_t {
        IPV4,
        IPV6,
        LOCAL
    };

    static SockAddrList CreateIPFromServ(const char* servname);
    static SockAddrList CreateIPFromServ(const std::string &servname);
    static SockAddrList CreateIPFromHost(const char* hostname);
    static SockAddrList CreateIPFromHost(const std::string &hostname);
    static SockAddrList CreateIP(unsigned serv);
    static SockAddrList CreateIP(const char* hostname, const char* servname);
    static SockAddrList CreateIP(const std::string &hostname, const std::string &servname);
    static SockAddrList CreateIP(const char* hostname, unsigned serv);
    static SockAddrList CreateIP(const std::string &hostname, unsigned serv);

    static SockAddrList CreateIP(const std::string &hostname);

    SocketAddress();
    SocketAddress(addrinfo *info);
    SocketAddress(addrinfo *info, unsigned portnum);
    SocketAddress(sockaddr *addr, socklen_t len);
    ~SocketAddress() {}

    std::string GetHostName(bool numerichost = true) const;
    std::string GetServName() const;
    unsigned GetServ() const;

    Type_t GetType() const;


    sockaddr *GetAddr() { return &address.addr; }
    socklen_t &GetLen() { return length; }
    sa_family_t &Family() { return address.storage.ss_family; }
    sa_family_t Family() const { return address.storage.ss_family; }

    void SetFromSockName(int fd);
    void SetFromPeerName(int fd);

private:
    static SockAddrList Lookup(const char* const hostname, const char* const port,
            int family, unsigned portnum);

    socklen_t length;

    union address_ {
        sockaddr addr;
        sockaddr_in in;
        sockaddr_in6 in6;
        sockaddr_un un;
        sockaddr_storage storage;
    } address;
};

#endif