/*-------------------------------------------------------------------------*/
void IncomingSocketListen(SLPList* socklist, SLPDSocket* sock)
/*-------------------------------------------------------------------------*/
{
SLPDSocket* connsock;
const int lowat = SLPD_SMALLEST_MESSAGE;
/* Only accept if we can. If we still maximum number of sockets, just*/
/* ignore the connection */
if(socklist->count < SLPD_MAX_SOCKETS)
{
connsock = SLPDSocketAlloc();
if(connsock)
{
connsock->peerinfo.peeraddrlen = sizeof(sock->peerinfo.peeraddr);
connsock->fd = accept(sock->fd,
&(connsock->peerinfo.peeraddr),
&(connsock->peerinfo .peeraddrlen));
if(connsock->fd >= 0)
{
setsockopt(connsock->fd,SOL_SOCKET,SO_RCVLOWAT,&lowat,sizeof(lowat));
setsockopt(connsock->fd,SOL_SOCKET,SO_SNDLOWAT,&lowat,sizeof(lowat));
connsock->peerinfo.peertype = SLPD_PEER_ACCEPTED;
connsock->recvbuf = SLPBufferAlloc(SLP_MAX_DATAGRAM_SIZE);
connsock->sendbuf = SLPBufferAlloc(SLP_MAX_DATAGRAM_SIZE);
connsock->state = STREAM_READ_FIRST;
sock->age = 0;
SLPListLinkHead(socklist,(SLPListItem*)connsock);
}
else
{
SLPDSocketFree(connsock);
}
}
}
}
/*==========================================================================*/
SLPDSocket* SLPDSocketCreateDatagram(struct in_addr* peeraddr,
int type)
/* myaddr - (IN) the address of the interface to join mcast on */
/* */
/* peeraddr - (IN) the address of the peer to connect to */
/* */
/* type (IN) DATAGRAM_UNICAST, DATAGRAM_MULTICAST, DATAGRAM_BROADCAST */
/* */
/* Returns: A datagram socket SLPDSocket->state will be set to */
/* DATAGRAM_UNICAST, DATAGRAM_MULTICAST, or DATAGRAM_BROADCAST */
/*==========================================================================*/
{
SLPDSocket* sock;
sock = SLPDSocketAlloc();
if(sock)
{
sock->recvbuf = SLPBufferAlloc(SLP_MAX_DATAGRAM_SIZE);
sock->sendbuf = SLPBufferAlloc(SLP_MAX_DATAGRAM_SIZE);
if(sock->recvbuf && sock->sendbuf)
{
sock->fd = socket(PF_INET, SOCK_DGRAM, 0);
if(sock->fd >=0)
{
switch(type)
{
case DATAGRAM_BROADCAST:
EnableBroadcast(sock->fd);
break;
case DATAGRAM_MULTICAST:
SetMulticastTTL(sock->fd,G_SlpdProperty.multicastTTL);
break;
default:
break;
}
sock->peeraddr.sin_family = AF_INET;
sock->peeraddr.sin_addr = *peeraddr;
sock->peeraddr.sin_port = htons(SLP_RESERVED_PORT);
sock->state = type;
}
else
{
SLPDSocketFree(sock);
sock = 0;
}
}
else
{
SLPDSocketFree(sock);
sock = 0;
}
}
return sock;
}
/*-------------------------------------------------------------------------*/
void IncomingSocketListen(SLPList* socklist, SLPDSocket* sock)
/*-------------------------------------------------------------------------*/
{
int fdflags;
sockfd_t fd;
SLPDSocket* connsock;
struct sockaddr_in peeraddr;
socklen_t peeraddrlen;
#ifdef WIN32
const char lowat = SLPD_SMALLEST_MESSAGE;
#else
const int lowat = SLPD_SMALLEST_MESSAGE;
#endif
/* Only accept if we can. If we still maximum number of sockets, just*/
/* ignore the connection */
if (socklist->count < SLPD_MAX_SOCKETS)
{
peeraddrlen = sizeof(peeraddr);
fd = accept(sock->fd,
(struct sockaddr *) &peeraddr,
&peeraddrlen);
if (fd >= 0)
{
connsock = SLPDSocketAlloc();
if (connsock)
{
/* setup the accepted socket */
connsock->fd = fd;
connsock->peeraddr = peeraddr;
connsock->state = STREAM_READ_FIRST;
/* Set the low water mark on the accepted socket */
setsockopt(connsock->fd,SOL_SOCKET,SO_RCVLOWAT,&lowat,sizeof(lowat));
setsockopt(connsock->fd,SOL_SOCKET,SO_SNDLOWAT,&lowat,sizeof(lowat));
/* set accepted socket to non blocking */
#ifdef WIN32
fdflags = 1;
ioctlsocket(connsock->fd, FIONBIO, &fdflags);
#else
fdflags = fcntl(connsock->fd, F_GETFL, 0);
fcntl(connsock->fd,F_SETFL, fdflags | O_NONBLOCK);
#endif
SLPListLinkHead(socklist,(SLPListItem*)connsock);
}
}
}
}
/*==========================================================================*/
SLPDSocket* SLPDSocketCreateListen(struct in_addr* peeraddr)
/* */
/* peeraddr - (IN) the address of the peer to connect to */
/* */
/* type (IN) DATAGRAM_UNICAST, DATAGRAM_MULTICAST, DATAGRAM_BROADCAST */
/* */
/* Returns: A listening socket. SLPDSocket->state will be set to */
/* SOCKET_LISTEN. Returns NULL on error */
/*==========================================================================*/
{
int fdflags;
SLPDSocket* sock;
sock = SLPDSocketAlloc();
if(sock)
{
sock->fd = socket(PF_INET, SOCK_STREAM, 0);
if(sock->fd >= 0)
{
if(BindSocketToInetAddr(sock->fd, peeraddr) >= 0)
{
if(listen(sock->fd,5) == 0)
{
/* Set socket to non-blocking so subsequent calls to */
/* accept will *never* block */
#ifdef WIN32
fdflags = 1;
ioctlsocket(sock->fd, FIONBIO, &fdflags);
#else
fdflags = fcntl(sock->fd, F_GETFL, 0);
fcntl(sock->fd,F_SETFL, fdflags | O_NONBLOCK);
#endif
sock->state = SOCKET_LISTEN;
return sock;
}
}
}
}
if(sock)
{
SLPDSocketFree(sock);
}
return 0;
}
/*==========================================================================*/
SLPDSocket* SLPDSocketCreateConnected(struct in_addr* addr)
/* */
/* addr - (IN) the address of the peer to connect to */
/* */
/* Returns: A connected socket or a socket in the process of being connected*/
/* if the socket was connected the SLPDSocket->state will be set */
/* to writable. If the connect would block, SLPDSocket->state will*/
/* be set to connect. Return NULL on error */
/*==========================================================================*/
{
#ifdef WIN32
char lowat;
u_long fdflags;
#else
int lowat;
int fdflags;
#endif
SLPDSocket* sock = 0;
sock = SLPDSocketAlloc();
if(sock == 0)
{
goto FAILURE;
}
/* create the stream socket */
sock->fd = socket(PF_INET,SOCK_STREAM,0);
if(sock->fd < 0)
{
goto FAILURE;
}
/* set the socket to non-blocking */
#ifdef WIN32
fdflags = 1;
ioctlsocket(sock->fd, FIONBIO, &fdflags);
#else
fdflags = fcntl(sock->fd, F_GETFL, 0);
fcntl(sock->fd,F_SETFL, fdflags | O_NONBLOCK);
#endif
/* zero then set peeraddr to connect to */
sock->peeraddr.sin_family = AF_INET;
sock->peeraddr.sin_port = htons(SLP_RESERVED_PORT);
sock->peeraddr.sin_addr = *addr;
/* set the receive and send buffer low water mark to 18 bytes
(the length of the smallest slpv2 message) */
lowat = 18;
setsockopt(sock->fd,SOL_SOCKET,SO_RCVLOWAT,&lowat,sizeof(lowat));
setsockopt(sock->fd,SOL_SOCKET,SO_SNDLOWAT,&lowat,sizeof(lowat));
/* non-blocking connect */
if(connect(sock->fd,
(struct sockaddr *) &(sock->peeraddr),
sizeof(sock->peeraddr)) == 0)
{
/* Connection occured immediately */
sock->state = STREAM_CONNECT_IDLE;
}
else
{
#ifdef WIN32
if(WSAEWOULDBLOCK == WSAGetLastError())
#else
if(errno == EINPROGRESS)
#endif
{
/* Connect would have blocked */
sock->state = STREAM_CONNECT_BLOCK;
}
else
{
goto FAILURE;
}
}
return sock;
/* cleanup on failure */
FAILURE:
if(sock)
{
CloseSocket(sock->fd);
xfree(sock);
sock = 0;
}
return sock;
}
/*==========================================================================*/
SLPDSocket* SLPDSocketCreateBoundDatagram(struct in_addr* myaddr,
struct in_addr* peeraddr,
int type)
/* myaddr - (IN) the address of the interface to join mcast on */
/* */
/* peeraddr - (IN) the address of the peer to connect to */
/* */
/* type (IN) DATAGRAM_UNICAST, DATAGRAM_MULTICAST, DATAGRAM_BROADCAST */
/* */
/* Returns: A datagram socket SLPDSocket->state will be set to */
/* DATAGRAM_UNICAST, DATAGRAM_MULTICAST, or DATAGRAM_BROADCAST */
/*==========================================================================*/
{
SLPDSocket* sock;
struct in_addr* bindaddr;
/*------------------------------------------*/
/* Adjust for multicast binding differences */
/*------------------------------------------*/
#ifdef LINUX
bindaddr = peeraddr;
#else
if(type == DATAGRAM_MULTICAST)
bindaddr = NULL; /* must bind to INADDR_ANY for multicast */
else
bindaddr = peeraddr;
#endif
/*------------------------*/
/* Create and bind socket */
/*------------------------*/
sock = SLPDSocketAlloc();
if(sock)
{
sock->recvbuf = SLPBufferAlloc(SLP_MAX_DATAGRAM_SIZE);
sock->sendbuf = SLPBufferAlloc(SLP_MAX_DATAGRAM_SIZE);
sock->fd = socket(PF_INET, SOCK_DGRAM, 0);
if(sock->fd >=0)
{
if(BindSocketToInetAddr(sock->fd, bindaddr) == 0)
{
if(peeraddr != NULL)
{
sock->peeraddr.sin_addr = *peeraddr;
}
switch(type)
{
case DATAGRAM_MULTICAST:
if(JoinSLPMulticastGroup(sock->fd, peeraddr, myaddr) == 0)
{
sock->state = DATAGRAM_MULTICAST;
goto SUCCESS;
}
break;
case DATAGRAM_BROADCAST:
if(EnableBroadcast(sock->fd) == 0)
{
sock->state = DATAGRAM_BROADCAST;
goto SUCCESS;
}
break;
case DATAGRAM_UNICAST:
default:
sock->state = DATAGRAM_UNICAST;
goto SUCCESS;
break;
}
}
}
}
if(sock)
{
SLPDSocketFree(sock);
}
sock = 0;
SUCCESS:
return sock;
}
