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/**
* @file llhost.cpp
* @brief Encapsulates an IP address and a port.
*
* $LicenseInfo:firstyear=2000&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include "linden_common.h"
#include "llhost.h"
#include "llerror.h"
#if LL_WINDOWS
#define WIN32_LEAN_AND_MEAN
#include <winsock2.h>
#else
#include <netdb.h>
#include <netinet/in.h> // ntonl()
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#endif
LLHost::LLHost(const std::string& ip_and_port)
{
std::string::size_type colon_index = ip_and_port.find(":");
if (colon_index == std::string::npos)
{
mIP = ip_string_to_u32(ip_and_port.c_str());
mPort = 0;
}
else
{
std::string ip_str(ip_and_port, 0, colon_index);
std::string port_str(ip_and_port, colon_index+1);
mIP = ip_string_to_u32(ip_str.c_str());
mPort = atol(port_str.c_str());
}
}
std::string LLHost::getString() const
{
return llformat("%s:%u", u32_to_ip_string(mIP), mPort);
}
std::string LLHost::getIPandPort() const
{
return getString();
}
std::string LLHost::getIPString() const
{
return std::string( u32_to_ip_string( mIP ) );
}
std::string LLHost::getHostName() const
{
hostent* he;
if (INVALID_HOST_IP_ADDRESS == mIP)
{
LL_WARNS() << "LLHost::getHostName() : Invalid IP address" << LL_ENDL;
return std::string();
}
he = gethostbyaddr((char *)&mIP, sizeof(mIP), AF_INET);
if (!he)
{
#if LL_WINDOWS
LL_WARNS() << "LLHost::getHostName() : Couldn't find host name for address " << mIP << ", Error: "
<< WSAGetLastError() << LL_ENDL;
#else
LL_WARNS() << "LLHost::getHostName() : Couldn't find host name for address " << mIP << ", Error: "
<< h_errno << LL_ENDL;
#endif
return std::string();
}
else
{
return ll_safe_string(he->h_name);
}
}
bool LLHost::setHostByName(const std::string& hostname)
{
hostent *he;
std::string local_name(hostname);
#if LL_WINDOWS
// We may need an equivalent for Linux, but not sure - djs
LLStringUtil::toUpper(local_name);
#endif
he = gethostbyname(local_name.c_str());
if(!he)
{
U32 ip_address = ip_string_to_u32(hostname.c_str());
he = gethostbyaddr((char *)&ip_address, sizeof(ip_address), AF_INET);
}
if (he)
{
mIP = *(U32 *)he->h_addr_list[0];
return true;
}
else
{
setAddress(local_name);
// In windows, h_errno is a macro for WSAGetLastError(), so store value here
S32 error_number = h_errno;
switch(error_number)
{
case TRY_AGAIN: // XXX how to handle this case?
LL_WARNS() << "LLHost::setAddress(): try again" << LL_ENDL;
break;
case HOST_NOT_FOUND:
case NO_ADDRESS: // NO_DATA
LL_WARNS() << "LLHost::setAddress(): host not found" << LL_ENDL;
break;
case NO_RECOVERY:
LL_WARNS() << "LLHost::setAddress(): unrecoverable error" << LL_ENDL;
break;
default:
LL_WARNS() << "LLHost::setAddress(): unknown error - " << error_number << LL_ENDL;
break;
}
return false;
}
}
LLHost& LLHost::operator=(const LLHost &rhs)
{
if (this != &rhs)
{
set(rhs.getAddress(), rhs.getPort());
}
return *this;
}
std::ostream& operator<< (std::ostream& os, const LLHost &hh)
{
os << u32_to_ip_string(hh.mIP) << ":" << hh.mPort ;
return os;
}
//std::istream& operator>> (std::istream& is, LLHost &rh)
//{
// is >> rh.mIP;
// is >> rh.mPort;
// return is;
//}
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