Imported existing code

indra/llmessage/llhost.cpp

@@ -0,0 +1,184 @@
+/** 
+ * @file llhost.cpp
+ * @brief Encapsulates an IP address and a port.
+ *
+ * $LicenseInfo:firstyear=2000&license=viewergpl$
+ * 
+ * Copyright (c) 2000-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#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::invalid(INVALID_PORT,INVALID_HOST_IP_ADDRESS);
+
+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)
+	{
+		llwarns << "LLHost::getHostName() : Invalid IP address" << llendl;
+		return std::string();
+	}
+	he = gethostbyaddr((char *)&mIP, sizeof(mIP), AF_INET);
+	if (!he)
+	{
+#if LL_WINDOWS
+		llwarns << "LLHost::getHostName() : Couldn't find host name for address " << mIP << ", Error: " 
+			<< WSAGetLastError() << llendl;
+#else
+		llwarns << "LLHost::getHostName() : Couldn't find host name for address " << mIP << ", Error: " 
+			<< h_errno << llendl;
+#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 = inet_addr(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? 
+				llwarns << "LLHost::setAddress(): try again" << llendl;
+				break;
+			case HOST_NOT_FOUND:
+			case NO_ADDRESS:	// NO_DATA
+				llwarns << "LLHost::setAddress(): host not found" << llendl;
+				break;
+			case NO_RECOVERY:
+				llwarns << "LLHost::setAddress(): unrecoverable error" << llendl;
+				break;
+			default:
+				llwarns << "LLHost::setAddress(): unknown error - " << error_number << llendl;
+				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;
+//}