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180 lines
10 KiB
180 lines
10 KiB
/***************************************************************************/
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/* */
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/* Project: OpenSLP - OpenSource implementation of Service Location */
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/* Protocol Version 2 */
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/* */
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/* File: slpd_socket.c */
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/* */
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/* Abstract: Socket specific functions implementation */
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/* */
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/* WARNING: NOT thread safe! */
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/*-------------------------------------------------------------------------*/
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/* */
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/* Please submit patches to http://www.openslp.org */
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/* */
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/*-------------------------------------------------------------------------*/
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/* */
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/* Copyright (C) 2000 Caldera Systems, Inc */
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/* All rights reserved. */
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/* */
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/* Redistribution and use in source and binary forms, with or without */
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/* modification, are permitted provided that the following conditions are */
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/* met: */
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/* */
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/* Redistributions of source code must retain the above copyright */
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/* notice, this list of conditions and the following disclaimer. */
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/* */
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/* Redistributions in binary form must reproduce the above copyright */
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/* notice, this list of conditions and the following disclaimer in */
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/* the documentation and/or other materials provided with the */
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/* distribution. */
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/* */
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/* Neither the name of Caldera Systems nor the names of its */
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/* contributors may be used to endorse or promote products derived */
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/* from this software without specific prior written permission. */
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/* */
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/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS */
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/* `AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT */
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/* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR */
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/* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE CALDERA */
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/* SYSTEMS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */
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/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT */
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/* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, */
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/* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON */
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/* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */
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/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE */
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/* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
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/* */
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/***************************************************************************/
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#ifndef SLPD_SOCKET_H_INCLUDED
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#define SLPD_SOCKET_H_INCLUDED
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#include "slpd.h"
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/*=========================================================================*/
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/* common code includes */
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/*=========================================================================*/
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#include "slp_buffer.h"
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/*=========================================================================*/
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/* Misc constants */
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/*=========================================================================*/
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#define SLPD_SMALLEST_MESSAGE 18 /* 18 bytes is smallest SLPv2 msg */
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/*=========================================================================*/
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/* Values representing a type or state of a socket */
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/*=========================================================================*/
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#define SOCKET_PENDING_IO 100
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#define SOCKET_LISTEN 0
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#define SOCKET_CLOSE 1
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#define DATAGRAM_UNICAST 2
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#define DATAGRAM_MULTICAST 3
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#define DATAGRAM_BROADCAST 4
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#define STREAM_CONNECT_IDLE 5
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#define STREAM_CONNECT_BLOCK 6 + SOCKET_PENDING_IO
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#define STREAM_CONNECT_CLOSE 7 + SOCKET_PENDING_IO
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#define STREAM_READ 8 + SOCKET_PENDING_IO
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#define STREAM_READ_FIRST 9 + SOCKET_PENDING_IO
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#define STREAM_WRITE 10 + SOCKET_PENDING_IO
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#define STREAM_WRITE_FIRST 11 + SOCKET_PENDING_IO
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#define STREAM_WRITE_WAIT 12 + SOCKET_PENDING_IO
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#ifdef _WIN32
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#define CloseSocket(Arg) closesocket(Arg)
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#else
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#define CloseSocket(Arg) close(Arg)
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#endif
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/*=========================================================================*/
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typedef struct _SLPDSocket
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/* Structure representing a socket */
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/*=========================================================================*/
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{
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SLPListItem listitem;
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int fd;
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time_t age; /* in seconds */
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int state;
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struct sockaddr_in ifaddr; /* address of interface */
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struct sockaddr_in peeraddr;
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/* Incoming socket stuff */
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SLPBuffer recvbuf;
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SLPBuffer sendbuf;
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/* Outgoing socket stuff */
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int reconns;
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SLPList sendlist;
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}SLPDSocket;
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/*==========================================================================*/
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SLPDSocket* SLPDSocketCreateConnected(struct in_addr* addr);
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/* */
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/* addr - (IN) the address of the peer to connect to */
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/* */
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/* Returns: A connected socket or a socket in the process of being connected*/
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/* if the socket was connected the SLPDSocket->state will be set */
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/* to writable. If the connect would block, SLPDSocket->state will*/
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/* be set to connect. Return NULL on error */
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/*==========================================================================*/
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/*==========================================================================*/
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SLPDSocket* SLPDSocketCreateListen(struct in_addr* peeraddr);
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/* */
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/* peeraddr - (IN) the address of the peer to connect to */
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/* */
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/* type (IN) DATAGRAM_UNICAST, DATAGRAM_MULTICAST, DATAGRAM_BROADCAST */
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/* */
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/* Returns: A listening socket. SLPDSocket->state will be set to */
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/* SOCKET_LISTEN. Returns NULL on error */
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/*==========================================================================*/
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/*==========================================================================*/
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SLPDSocket* SLPDSocketCreateDatagram(struct in_addr* peeraddr, int type);
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/* peeraddr - (IN) the address of the peer to connect to */
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/* */
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/* type - (IN) the type of socket to create DATAGRAM_UNICAST, */
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/* DATAGRAM_MULTICAST, or DATAGRAM_BROADCAST */
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/* Returns: A datagram socket SLPDSocket->state will be set to */
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/* DATAGRAM_UNICAST, DATAGRAM_MULTICAST, or DATAGRAM_BROADCAST */
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/*==========================================================================*/
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/*==========================================================================*/
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SLPDSocket* SLPDSocketCreateBoundDatagram(struct in_addr* myaddr,
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struct in_addr* peeraddr,
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int type);
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/* myaddr - (IN) the address of the interface to join mcast on */
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/* */
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/* peeraddr - (IN) the address of the peer to connect to */
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/* */
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/* type (IN) DATAGRAM_UNICAST, DATAGRAM_MULTICAST, DATAGRAM_BROADCAST */
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/* */
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/* Returns: A datagram socket SLPDSocket->state will be set to */
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/* DATAGRAM_UNICAST, DATAGRAM_MULTICAST, or DATAGRAM_BROADCAST */
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/*==========================================================================*/
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/*=========================================================================*/
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SLPDSocket* SLPDSocketAlloc();
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/* Allocate memory for a new SLPDSocket. */
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/* */
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/* Returns: pointer to a newly allocated SLPDSocket, or NULL if out of */
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/* memory. */
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/*=========================================================================*/
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/*=========================================================================*/
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void SLPDSocketFree(SLPDSocket* sock);
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/* Frees memory associated with the specified SLPDSocket */
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/* */
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/* sock (IN) pointer to the socket to free */
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/*=========================================================================*/
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#endif
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