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ip_address.cpp

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#include "API/Network/ip_address.h"
#include "API/Core/System/error.h"

#ifndef WIN32
        #include <sys/socket.h>
        #include <netinet/in.h>
        #include <arpa/inet.h>
        #include <netdb.h>
#else
        #include <windows.h>
#endif

// CL_IPAddress construction:

CL_IPAddress::CL_IPAddress()
: ip(INADDR_ANY), port(0)
{
}

CL_IPAddress::CL_IPAddress(unsigned int address, unsigned short port)
: ip(address), port(port)
{
}

CL_IPAddress::CL_IPAddress(const std::string &hostname, unsigned short port)
: ip(INADDR_ANY), port(port)
{
        set_address(hostname);
}

CL_IPAddress::CL_IPAddress(const CL_IPAddress &copy)
: ip(copy.ip), port(copy.port)
{
}

// CL_IPAddress attributes:

// CL_IPAddress operations:

void CL_IPAddress::set_address(const std::string &hostname)
{
        unsigned int addr = 0;

        addr = inet_addr(hostname.c_str());
        if (addr == INADDR_NONE)
        {
                hostent *host = gethostbyname(hostname.c_str());
                if (host == NULL) throw CL_Error("Could not lookup DNS name");

                addr = *((unsigned int*) host->h_addr_list[0]);
        }

        set_address(addr);
}

std::string CL_IPAddress::dns_lookup() const
{
        sockaddr_in addr_in;
        memset(&addr_in, 0, sizeof(addr_in));
        addr_in.sin_family = AF_INET;
        addr_in.sin_addr.s_addr = ip;
        addr_in.sin_port = htons(port);

        hostent *host = gethostbyaddr((const char *) &addr_in, sizeof(addr_in), AF_INET);
        if (host == NULL) throw CL_Error("Unable to lookup IP address");
        return std::string(host->h_name);
}

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