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/*
* Copyright (C) 2007-2023 Xagasoft, All rights reserved.
*
* This file is part of the libbu++ library and is released under the
* terms of the license contained in the file LICENSE.
*/
#include "bu/config.h"
#ifndef WIN32
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <arpa/inet.h>
#endif
#include <time.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
//#include <termios.h>
#include <fcntl.h>
#include "bu/serversockettcp.h"
#include "bu/sockettcp.h"
namespace Bu { subExceptionDef( ServerSocketTcpException ) }
Bu::ServerSocketTcp::ServerSocketTcp( int iPort, int nPoolSize ) :
iPort( iPort )
{
#ifdef WIN32
Bu::Winsock2::getInstance();
#endif
/* Create the socket and set it up to accept connections. */
struct sockaddr_in name;
/* Give the socket a name. */
name.sin_family = AF_INET;
name.sin_port = bu_htons( iPort );
// I think this specifies who we will accept connections from,
// a good thing to make configurable later on
name.sin_addr.s_addr = bu_htonl( INADDR_ANY );
startServer( name, nPoolSize );
}
Bu::ServerSocketTcp::ServerSocketTcp(const String &sAddr,int iPort, int nPoolSize) :
iPort( iPort )
{
#ifdef WIN32
Bu::Winsock2::getInstance();
#endif
/* Create the socket and set it up to accept connections. */
struct sockaddr_in name;
/* Give the socket a name. */
name.sin_family = AF_INET;
name.sin_port = bu_htons( iPort );
#ifdef WIN32
name.sin_addr.s_addr = bu_inet_addr( sAddr.getStr() );
#else
inet_aton( sAddr.getStr(), &name.sin_addr );
#endif
startServer( name, nPoolSize );
}
Bu::ServerSocketTcp::ServerSocketTcp( socket_t iSocket, bool bInit, int nPoolSize ) :
iSocket( iSocket ),
iPort( 0 )
{
#ifdef WIN32
Bu::Winsock2::getInstance();
#endif
if( bInit )
{
struct sockaddr name;
socklen_t namelen = sizeof(name);
getpeername( iSocket, &name, &namelen );
initServer( *((sockaddr_in *)&name), nPoolSize );
}
else
{
FD_ZERO( &fdActive );
FD_SET( iSocket, &fdActive );
}
}
Bu::ServerSocketTcp::ServerSocketTcp( const ServerSocketTcp &rSrc )
{
#ifdef WIN32
Bu::Winsock2::getInstance();
#endif
iSocket = dup( rSrc.iSocket );
iPort = rSrc.iPort;
FD_ZERO( &fdActive );
FD_SET( iSocket, &fdActive );
}
Bu::ServerSocketTcp::~ServerSocketTcp()
{
#ifdef WIN32
if( iSocket != INVALID_SOCKET )
#else
if( iSocket > -1 )
#endif
::close( iSocket );
}
void Bu::ServerSocketTcp::startServer( struct sockaddr_in &name, int nPoolSize )
{
/* Create the socket. */
iSocket = bu_socket( PF_INET, SOCK_STREAM, 0 );
#ifdef WIN32
if( iSocket == INVALID_SOCKET )
#else
if( iSocket < 0 )
#endif
{
throw Bu::ServerSocketTcpException("Couldn't create a listen socket.");
}
int opt = 1;
bu_setsockopt(
iSocket,
SOL_SOCKET,
SO_REUSEADDR,
(char *)&opt,
sizeof( opt )
);
initServer( name, nPoolSize );
}
void Bu::ServerSocketTcp::initServer( struct sockaddr_in &name, int nPoolSize )
{
if( bu_bind( iSocket, (struct sockaddr *) &name, sizeof(name) ) < 0 )
{
throw Bu::ServerSocketTcpException("Couldn't bind to the listen socket.");
}
if( bu_listen( iSocket, nPoolSize ) < 0 )
{
throw Bu::ServerSocketTcpException(
"Couldn't begin listening to the server socket."
);
}
FD_ZERO( &fdActive );
/* Initialize the set of active sockets. */
FD_SET( iSocket, &fdActive );
}
Bu::Socket *Bu::ServerSocketTcp::accept( int nTimeoutSec, int nTimeoutUSec )
{
fd_set fdRead = fdActive;
struct timeval xT;
xT.tv_sec = nTimeoutSec;
xT.tv_usec = nTimeoutUSec;
if( TEMP_FAILURE_RETRY(
bu_select( iSocket+1, &fdRead, NULL, NULL, &xT )) < 0 )
{
throw Bu::ServerSocketTcpException(
"Error scanning for new connections: %s", strerror( errno )
);
}
if( FD_ISSET( iSocket, &fdRead ) )
{
struct sockaddr_in clientname;
socklen_t size;
int nClient;
size = sizeof( clientname );
#ifdef WIN32
nClient = bu_accept( iSocket, (struct sockaddr *)&clientname, &size);
#else /* not-WIN32 */
#ifdef __CYGWIN__
nClient = ::accept( iSocket, (struct sockaddr *)&clientname,
(int *)&size
);
#else /* not-cygwin */
#ifdef __APPLE__
nClient = ::accept( iSocket, (struct sockaddr *)&clientname, (socklen_t*)&size );
#else /* linux */
nClient = ::accept( iSocket, (struct sockaddr *)&clientname, &size );
#endif /* __APPLE__ */
#endif /* __CYGWIN__ */
#endif /* WIN32 */
if( nClient < 0 )
{
throw Bu::ServerSocketTcpException(
"Error accepting a new connection: %s", strerror( errno )
);
}
#ifndef WIN32
char tmpa[20];
inet_ntop( AF_INET, (void *)&clientname.sin_addr, tmpa, 20 );
//"New connection from host %s, port %hd.",
// tmpa, ntohs (clientname.sin_port) );
#endif
{
#ifndef WIN32
int flags;
flags = fcntl( nClient, F_GETFL, 0 );
flags |= O_NONBLOCK;
if( fcntl( nClient, F_SETFL, flags ) < 0)
{
throw Bu::ServerSocketTcpException(
"Error setting option on client socket: %s",
strerror( errno )
);
}
#else
//-------------------------
// Set the socket I/O mode: In this case FIONBIO
// enables or disables the blocking mode for the
// socket based on the numerical value of iMode.
// If iMode = 0, blocking is enabled;
// If iMode != 0, non-blocking mode is enabled.
u_long iMode = 1;
bu_ioctlsocket(nClient, FIONBIO, &iMode);
#endif
}
return new SocketTcp( nClient );
}
return NULL;
}
bool Bu::ServerSocketTcp::getFd( int &rFdOut ) const
{
rFdOut = iSocket;
return true;
}
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