--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/genericopenlibs/cstdlib/LPOSIX/NETDB.CPP	Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,283 @@
+// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+// Support for hostname & hostaddr related functions
+// 
+//
+
+#include "SYSIF.H"
+#include "FDESC.H"
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/errno.h>
+#include "LPOSIX.H"
+#include <sys/socket.h>
+#include <libc/netinet/in.h>
+#include <netdb_r.h>
+#include <string.h>
+#include <in_sock.h>
+#include <networking/dnd_err.h>
+
+extern "C" {
+
+/**
+Get the internet name of this host. Actually this will always return a null 
+string with TCPIP 030 and onwards because the "name" of a mobile host
+isn't really very meaningful - in practice the IP address is chosen dynamically
+once you start doing real networking, at which time the ISP can resolve the 
+IP address into a name of some sort if you really want.
+@return 
+@param name
+@param size
+*/
+EXPORT_C int gethostname (char *name, size_t size)
+	{
+	int* perrno=__errno();
+	RSocketServ ss;
+	TInt err=ss.Connect(1);
+	if (err==KErrNone)
+		{
+		RHostResolver r;
+		err=r.Open(ss, AF_INET, KProtocolInetUdp);
+		if (err==KErrNone)
+			{
+			TBuf<128> hostname;
+			err=r.GetHostName(hostname);
+			if (err==KErrNone)
+				{
+				if (size>(size_t)hostname.Length())
+					{
+					TPtr8 retval((TText8*)name,size);
+					retval.Copy(hostname);
+					retval.PtrZ();
+					}
+				else
+					err=ENAMETOOLONG;
+				}
+			r.Close();
+			}
+		ss.Close();
+		}
+	return MapError(err,*perrno);
+	}
+
+/**
+Get the internet name of the host by address.
+@return 
+@param addr Address of the host
+@param length 
+@param format 
+*/
+EXPORT_C struct hostent* gethostbyaddr (const char* addr, int length, int format)
+	{
+	return _gethostbyaddr_r(_REENT,addr,length,format);
+	}
+
+/**
+Get the internet name of the host by name.
+@return 	
+@param name Name of the host
+*/
+EXPORT_C struct hostent* gethostbyname (const char* name)
+	{
+	return _gethostbyname_r(_REENT,name);
+	}
+
+enum GetHostType {ByName = 1, ByAddr};
+
+#define MAX_ADDR_OR_ALIAS_LIST	5
+
+struct hostent_buf
+	{
+	struct hostent iHostent;
+	char *iAliasesPtr[MAX_ADDR_OR_ALIAS_LIST+1];
+	char *iAddrListPtr[MAX_ADDR_OR_ALIAS_LIST+1];
+	THostName iHostAliases[MAX_ADDR_OR_ALIAS_LIST];
+	struct sockaddr iHostAddress[MAX_ADDR_OR_ALIAS_LIST];
+	};
+
+struct hostent* mapNameRecord(struct _reent* rp, TFixedArray<TNameRecord, MAX_ADDR_OR_ALIAS_LIST>& aRecord, const TInt aCount, const GetHostType aHostType, const int aLength, const int aFormat)
+	{
+	free(rp->_netdb);
+	struct hostent_buf* hbp = (struct hostent_buf*)calloc(1,sizeof(struct hostent_buf));
+	rp->_netdb = hbp;
+	if (hbp==0)
+		{
+		rp->_errno=ENOMEM;
+		return 0;
+		}
+
+	// Set-up Aliases & Address list pointer
+	hbp->iHostent.h_aliases = &hbp->iAliasesPtr[0];
+	hbp->iHostent.h_addr_list = &hbp->iAddrListPtr[0];
+
+	// Fill-up Host Name
+	hbp->iHostent.h_name = (char*) &hbp->iHostAliases[0];
+	TPtr8 name((TText8*)&hbp->iHostAliases[0], aRecord[0].iName.Length()+1);
+	name.Copy(aRecord[0].iName);
+	name.ZeroTerminate();
+
+	hbp->iHostent.h_addrtype = aFormat;
+	hbp->iHostent.h_length = aLength;
+
+	// Fill-up Address
+	hbp->iAddrListPtr[0] = (char*)&hbp->iHostAddress[0].sa_data[0];		// ... which is iAddr
+	unsigned long len=sizeof(struct sockaddr);
+	aRecord[0].iAddr.SetFamily(aFormat);	// not set by GetByName(_L(""));
+	STATIC_CAST(TUSockAddr*,&aRecord[0].iAddr)->Get(&hbp->iHostAddress[0],&len);
+
+	if (aCount > 1)
+		{
+		// If there are multiple host name or address
+		TInt i;
+		if (aHostType == ByName)
+			{
+			// there are multiple addresses for a given host
+			hbp->iAliasesPtr[0] = NULL;
+			for (i=1; i<aCount; i++)
+				{
+				hbp->iAddrListPtr[i] = (char*)&hbp->iHostAddress[i].sa_data[0];
+				len=sizeof(struct sockaddr);
+				aRecord[i].iAddr.SetFamily(aFormat);	// not set by GetByName(_L(""));
+				STATIC_CAST(TUSockAddr*,&aRecord[i].iAddr)->Get(&hbp->iHostAddress[i],&len);
+				}
+			hbp->iAddrListPtr[i] = NULL;
+			}
+		else
+			{
+			// there are multiple host/aliases name for a given address
+			hbp->iAddrListPtr[1] = NULL;
+			for (i=1; i<aCount; i++)
+				{
+				hbp->iAliasesPtr[i-1] = (char*) &hbp->iHostAliases[i];
+				name.Set((TText8*)&hbp->iHostAliases[i], 0, aRecord[i].iName.Length()+1);
+				name.Copy(aRecord[i].iName);
+				name.ZeroTerminate();
+				}
+			hbp->iAliasesPtr[i-1] = NULL;
+			}
+		}
+	else
+		{
+		hbp->iAliasesPtr[0] = NULL;
+		hbp->iAddrListPtr[1] = NULL;
+		}
+	return &hbp->iHostent;
+	}
+
+/**
+Get the internet name of the host by address.
+@return 
+@param rp pointer
+@param addr 
+@param length 
+@param format 
+*/
+EXPORT_C struct hostent* _gethostbyaddr_r (struct _reent* rp, const char* addr, int length, int format)
+//
+// For AF_INET, 
+	{
+	RSocketServ ss;
+	TInt err=ss.Connect();
+	struct hostent* retval=0;
+	if (err==KErrNone)
+		{
+		RHostResolver r;
+		err=r.Open(ss, AF_INET, KProtocolInetUdp);
+		if (err==KErrNone)
+			{
+			struct sockaddr buf;
+			buf.sa_family=(unsigned short)format;
+			memcpy(buf.sa_data,addr,length);
+			TUSockAddr addr(&buf,length+4);
+
+			TFixedArray<TNameRecord, MAX_ADDR_OR_ALIAS_LIST> record;
+			TNameEntry entry;
+			TInt count = 0;
+			err=r.GetByAddress(addr,entry);
+			if (err==KErrNone)
+				{
+				record[count++]=entry();
+				while ((r.Next(entry) == KErrNone) && (count < MAX_ADDR_OR_ALIAS_LIST))
+					{
+					record[count++] = entry();
+					}
+				retval = mapNameRecord(rp, record, count, ByAddr, length, format);
+				}
+			r.Close();
+			}
+		ss.Close();
+		}
+	if (err==-3004)	// NETDIAL busy
+		err=TRY_AGAIN;
+
+	// KErrDndAddrNotFound=-5121 should be excluded (Returned when no data found for GetByAddr)
+	if ((err<-3000)	&& (err!=KErrDndAddrNotFound))	// i.e. a NETDIAL error
+		err=NO_RECOVERY;
+	MapError(err,rp->_errno);
+	return retval;
+	}
+
+/**
+Get the internet name of the host by name.
+@return 
+@param rp 
+@param name name of the host
+*/
+EXPORT_C struct hostent* _gethostbyname_r (struct _reent* rp, const char* name)
+	{
+	RSocketServ ss;
+	TInt err=ss.Connect();
+	struct hostent* retval=0;
+	if (err==KErrNone)
+		{
+		RHostResolver r;
+		err=r.Open(ss, AF_INET, KProtocolInetUdp);
+		if (err==KErrNone)
+			{			
+			TFixedArray<TNameRecord, MAX_ADDR_OR_ALIAS_LIST> record;
+			TNameEntry entry;
+#ifdef _UNICODE
+			TPtrC8 ptr(REINTERPRET_CAST(const TUint8*,name));
+			TBuf<0x40> hostname;
+			hostname.Copy(ptr);
+#else
+			TPtrC8 hostname(REINTERPRET_CAST(const TUint8*,name));
+#endif /* _UNICODE */
+
+			TInt count = 0;
+			err=r.GetByName(hostname,entry);
+			if (err==KErrNone)
+				{
+				record[count++]=entry();
+				while ((r.Next(entry) == KErrNone) && (count < MAX_ADDR_OR_ALIAS_LIST))
+					{
+					record[count++] = entry();
+					}
+				retval = mapNameRecord(rp, record, count, ByName, sizeof(struct in_addr), AF_INET);
+				}
+			r.Close();
+			}
+		ss.Close();
+		}
+	if (err==-3004)	// NETDIAL busy
+		err=TRY_AGAIN;
+
+	// KErrDndNameNotFound=-5120 should be excluded (Returned when no data found for GetByName)
+	if ((err<-3000)	&& (err!=KErrDndNameNotFound)) // i.e. a NETDIAL error
+		err=NO_RECOVERY;
+	MapError(err,rp->_errno);
+	return retval;
+	}
+
+} // extern "C"