1/* -*- Mode: C; tab-width: 4 -*- 2 * 3 * Copyright (c) 2002-2004 Apple Computer, Inc. All rights reserved. 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18#ifndef __mDNSPlatformPosix_h 19#define __mDNSPlatformPosix_h 20 21#include <signal.h> 22#include <sys/time.h> 23 24#ifdef __cplusplus 25extern "C" { 26#endif 27 28// PosixNetworkInterface is a record extension of the core NetworkInterfaceInfo 29// type that supports extra fields needed by the Posix platform. 30// 31// IMPORTANT: coreIntf must be the first field in the structure because 32// we cast between pointers to the two different types regularly. 33 34typedef struct PosixNetworkInterface PosixNetworkInterface; 35 36struct PosixNetworkInterface 37{ 38 NetworkInterfaceInfo coreIntf; 39 const char * intfName; 40 PosixNetworkInterface * aliasIntf; 41 int index; 42 int multicastSocket4; 43#if HAVE_IPV6 44 int multicastSocket6; 45#endif 46}; 47 48// This is a global because debugf_() needs to be able to check its value 49extern int gMDNSPlatformPosixVerboseLevel; 50 51struct mDNS_PlatformSupport_struct 52{ 53 int unicastSocket4; 54#if HAVE_IPV6 55 int unicastSocket6; 56#endif 57}; 58 59#define uDNS_SERVERS_FILE "/etc/resolv.conf" 60extern int ParseDNSServers(mDNS *m, const char *filePath); 61extern mStatus mDNSPlatformPosixRefreshInterfaceList(mDNS *const m); 62// See comment in implementation. 63 64// Call mDNSPosixGetFDSet before calling select(), to update the parameters 65// as may be necessary to meet the needs of the mDNSCore code. 66// The timeout pointer MUST NOT be NULL. 67// Set timeout->tv_sec to 0x3FFFFFFF if you want to have effectively no timeout 68// After calling mDNSPosixGetFDSet(), call select(nfds, &readfds, NULL, NULL, &timeout); as usual 69// After select() returns, call mDNSPosixProcessFDSet() to let mDNSCore do its work 70extern void mDNSPosixGetFDSet(mDNS *m, int *nfds, fd_set *readfds, struct timeval *timeout); 71extern void mDNSPosixProcessFDSet(mDNS *const m, fd_set *readfds); 72 73typedef void (*mDNSPosixEventCallback)(int fd, short filter, void *context); 74 75extern mStatus mDNSPosixAddFDToEventLoop( int fd, mDNSPosixEventCallback callback, void *context); 76extern mStatus mDNSPosixRemoveFDFromEventLoop( int fd); 77extern mStatus mDNSPosixListenForSignalInEventLoop( int signum); 78extern mStatus mDNSPosixIgnoreSignalInEventLoop( int signum); 79extern mStatus mDNSPosixRunEventLoopOnce( mDNS *m, const struct timeval *pTimeout, sigset_t *pSignalsReceived, mDNSBool *pDataDispatched); 80 81#ifdef __cplusplus 82} 83#endif 84 85#endif 86