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#ifdef __ANDROID__ 24#include <sys/select.h> 25#endif 26 27#ifdef __cplusplus 28 extern "C" { 29#endif 30 31// PosixNetworkInterface is a record extension of the core NetworkInterfaceInfo 32// type that supports extra fields needed by the Posix platform. 33// 34// IMPORTANT: coreIntf must be the first field in the structure because 35// we cast between pointers to the two different types regularly. 36 37typedef struct PosixNetworkInterface PosixNetworkInterface; 38 39struct PosixNetworkInterface 40 { 41 NetworkInterfaceInfo coreIntf; 42 const char * intfName; 43 PosixNetworkInterface * aliasIntf; 44 int index; 45 int multicastSocket4; 46#if HAVE_IPV6 47 int multicastSocket6; 48#endif 49 }; 50 51// This is a global because debugf_() needs to be able to check its value 52extern int gMDNSPlatformPosixVerboseLevel; 53 54struct mDNS_PlatformSupport_struct 55 { 56 int unicastSocket4; 57#if HAVE_IPV6 58 int unicastSocket6; 59#endif 60 }; 61 62#define uDNS_SERVERS_FILE "/etc/resolv.conf" 63extern int ParseDNSServers(mDNS *m, const char *filePath); 64extern mStatus mDNSPlatformPosixRefreshInterfaceList(mDNS *const m); 65 // See comment in implementation. 66 67// Call mDNSPosixGetFDSet before calling select(), to update the parameters 68// as may be necessary to meet the needs of the mDNSCore code. 69// The timeout pointer MUST NOT be NULL. 70// Set timeout->tv_sec to 0x3FFFFFFF if you want to have effectively no timeout 71// After calling mDNSPosixGetFDSet(), call select(nfds, &readfds, NULL, NULL, &timeout); as usual 72// After select() returns, call mDNSPosixProcessFDSet() to let mDNSCore do its work 73extern void mDNSPosixGetFDSet(mDNS *m, int *nfds, fd_set *readfds, struct timeval *timeout); 74extern void mDNSPosixProcessFDSet(mDNS *const m, fd_set *readfds); 75 76typedef void (*mDNSPosixEventCallback)(int fd, short filter, void *context); 77 78extern mStatus mDNSPosixAddFDToEventLoop( int fd, mDNSPosixEventCallback callback, void *context); 79extern mStatus mDNSPosixRemoveFDFromEventLoop( int fd); 80extern mStatus mDNSPosixListenForSignalInEventLoop( int signum); 81extern mStatus mDNSPosixIgnoreSignalInEventLoop( int signum); 82extern mStatus mDNSPosixRunEventLoopOnce( mDNS *m, const struct timeval *pTimeout, sigset_t *pSignalsReceived, mDNSBool *pDataDispatched); 83 84#ifdef __cplusplus 85 } 86#endif 87 88#endif 89