libs-gsweb/GSWAdaptors/common/GSWAppConnectNSSocket.c

/* GSWAppConnectNSSocket.c - GSWeb: Adaptors: App Connection by Netscape Sockets
   Copyright (C) 1999 Free Software Foundation, Inc.
   
   Written by:	Manuel Guesdon <mguesdon@sbuilders.com>
   Date: 		Jully 1999
   
   This file is part of the GNUstep Web Library.
   
   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.
   
   You should have received a copy of the GNU Library General Public
   License along with this library; if not, write to the Free
   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <netdb.h>
#include <sys/socket.h>
#include <errno.h>

#include "config.h"
#include "GSWUtil.h"
#include "GSWDict.h"
#include "GSWURLUtil.h"
//#include "GSWAppRequest.h"
#include "GSWAppRequestStruct.h"
#include "GSWAppConnect.h"

typedef SYS_NETFD AppConnectNSSocketHandle;

AppConnectHandle GSWApp_Open(GSWAppRequest* p_pAppRequest,
							 void* p_pLogServerData)
{
  AppConnectHandle handle=NULL;
  if (!p_pAppRequest)
	{
	}
  else
	{
	  struct hostent* pHost=hl_find(p_pAppRequest->pszHost);
	  if (!pHost)
		{
		  GSWLog(GSW_ERROR, "gethostbyname(%s) returns no host",p_pAppRequest->pszHost);
		}
	  else if (pHost->h_addrtype!=AF_INET)
		{
		  GSWLog(GSW_ERROR,"Host %s has bad address type",p_pAppRequest->pszHost);
		}
	  else
		{
		  AppConnectNSSocketHandle nshandle=NULL;
		  struct sockaddr_in sin;
		  memset(&sin,0,sizeof(sin));
		  sin.sin_family = pHost->h_addrtype;
		  sin.sin_port = htons(p_pAppRequest->iPort);
		  memcpy(&sin.sin_addr, pHost->h_addr_list[0] , pHost->h_length);

		  GSWLog(GSW_INFO, "Try contacting %s on port %d...",
				 p_pAppRequest->pszHost,
				 p_pAppRequest->iPort);
		  nshandle = net_socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);	
		  if (nshandle<0)
			{
			  GSWLog(GSW_ERROR,"Can't Create socket to %s:%d. Error=%d (%s)",
					 p_pAppRequest->pszHost,
					 p_pAppRequest->iPort,
					 errno,
					 strerror(errno));
			}
		  else
			{
			  if (net_connect(nshandle,(struct sockaddr*)&sin,sizeof(sin))<0)
				{
				  GSWLog(GSW_ERROR,"Can't connect to %s:%d. Error=%d (%s)",
					 p_pAppRequest->pszHost,
					 p_pAppRequest->iPort,
					 errno,
					 strerror(errno));
				  net_close(nshandle);
				};
			};
		  handle=(AppConnectHandle)nshandle;
		};
	};
  return handle;
};

void GSWApp_Close(AppConnectHandle p_handle,
				  void* p_pLogServerData)
{
  if (p_handle)
	{
	  AppConnectNSSocketHandle handle=(AppConnectNSSocketHandle)p_handle;
	  if (handle && handle>(AppConnectNSSocketHandle)1)
		net_close(handle);
	};
};

int GSWApp_SendLine(AppConnectHandle p_handle,
					CONST char* p_pszBuffer,
					void* p_pLogServerData)
{
  int iRetValue=-1;
  if (p_handle)
	  iRetValue=sendbytes(p_handle,p_pszBuffer,strlen(p_pszBuffer));
  return iRetValue;
}

int GSWApp_SendBlock(AppConnectHandle p_handle,
					 CONST char* p_pszBuffer,
					 int p_iSize,
					 void* p_pLogServerData)
{
  int iRetValue=-1;
  if (p_handle)
	{
	  AppConnectNSSocketHandle handle=(AppConnectNSSocketHandle)p_handle;
	  int iSent=0;
	  int iRemainingSize = p_iSize;	
	  while (iRemainingSize>0 && iSent>=0)
		{
		  iSent=net_write(handle,(char*)p_pszBuffer,iRemainingSize);
		  if (iSent<0)
			GSWLog(GSW_ERROR,"send failed. Error=%d (%s)",
				   errno,
				   strerror(errno));
		  else
			{
			  p_pszBuffer+=iSent;
			  iRemainingSize-=iSent;
			};
		};
	  iRetValue=(iRemainingSize>0) ? -1 : 0;
	};
  return iRetValue;
}

int GSWApp_ReceiveLine(AppConnectHandle p_handle,
					   char* p_pszBuffer,
					   int p_iBufferSize,
					   void* p_pLogServerData)
{
  int iRetValue=-1;
  if (p_handle)
	{
	  AppConnectNSSocketHandle handle=(AppConnectNSSocketHandle)p_handle;
	  char c=0;
	  int iReaden=0;
	  int i = 0;
	  BOOL fOk=TRUE;
	  while (c!='\n' && i<p_iBufferSize-1 && fOk)
		{
		  iReaden=net_read(handle,&c,1,APP_CONNECT_TIMEOUT);
		  if (iReaden<1)
			{
			  GSWLog(GSW_ERROR,"GSWApp_ReceiveLine. Error=%d (%s)",
					 errno,
					 strerror(errno));
			  iRetValue=0; //??
			  fOk=FALSE;
			}
		  else
			p_pszBuffer[i++] = c;
		};
	  if (i>0)
		{
		  p_pszBuffer[i] = '\0';
		  iRetValue=DeleteTrailingCRNL(p_pszBuffer);
		}
	  else
		iRetValue=0; //??
	};
  return iRetValue;
};

int GSWApp_ReceiveBlock(AppConnectHandle p_handle,
						char* p_pszBuffer,
						int p_iBufferSize,
						void* p_pLogServerData) 
{
  int iRetValue=-1;
  if (p_handle)
	{
	  AppConnectNSSocketHandle handle=(AppConnectNSSocketHandle)p_handle;
	  int iReceived=0;
	  int iRemainingSize=p_iBufferSize;
	  BOOL fOk=TRUE;
	  while (iRemainingSize>0 && fOk)
		{
		  iReceived=net_read(handle,p_pszBuffer,iRemainingSize,APP_CONNECT_TIMEOUT);
		  if (iReceived<0)
			{
			  GSWLog(GSW_ERROR,"GSWApp_ReceiveBlock failed. Error=%d %s",
					 errno,
					 strerror(errno));
			  fOk=FALSE;
			}
		  else
			{
			  p_pszBuffer+=iReceived;
			  iRemainingSize-=iReceived;
			};
		};
	  iRetValue=p_iBufferSize-iRemainingSize;
	};
  return iRetValue;
};