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 37 typedef struct PosixNetworkInterface PosixNetworkInterface; 38 39 struct 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 52 extern int gMDNSPlatformPosixVerboseLevel; 53 54 struct 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" 63 extern int ParseDNSServers(mDNS *m, const char *filePath); 64 extern 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 73 extern void mDNSPosixGetFDSet(mDNS *m, int *nfds, fd_set *readfds, struct timeval *timeout); 74 extern void mDNSPosixProcessFDSet(mDNS *const m, fd_set *readfds); 75 76 typedef void (*mDNSPosixEventCallback)(int fd, short filter, void *context); 77 78 extern mStatus mDNSPosixAddFDToEventLoop( int fd, mDNSPosixEventCallback callback, void *context); 79 extern mStatus mDNSPosixRemoveFDFromEventLoop( int fd); 80 extern mStatus mDNSPosixListenForSignalInEventLoop( int signum); 81 extern mStatus mDNSPosixIgnoreSignalInEventLoop( int signum); 82 extern mStatus mDNSPosixRunEventLoopOnce( mDNS *m, const struct timeval *pTimeout, sigset_t *pSignalsReceived, mDNSBool *pDataDispatched); 83 84 #ifdef __cplusplus 85 } 86 #endif 87 88 #endif 89