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 Change History (most recent first): 18 19 $Log: mDNSPosix.h,v $ 20 Revision 1.18 2006/08/14 23:24:47 cheshire 21 Re-licensed mDNSResponder daemon source code under Apache License, Version 2.0 22 23 Revision 1.17 2005/02/04 00:39:59 cheshire 24 Move ParseDNSServers() from PosixDaemon.c to mDNSPosix.c so all Posix client layers can use it 25 26 Revision 1.16 2004/11/30 22:37:01 cheshire 27 Update copyright dates and add "Mode: C; tab-width: 4" headers 28 29 Revision 1.15 2004/02/06 01:19:51 cheshire 30 Conditionally exclude IPv6 code unless HAVE_IPV6 is set 31 32 Revision 1.14 2004/01/28 21:12:15 cheshire 33 Reconcile mDNSIPv6Support & HAVE_IPV6 into a single flag (HAVE_IPV6) 34 35 Revision 1.13 2004/01/24 05:12:03 cheshire 36 <rdar://problem/3534352>: Need separate socket for issuing unicast queries 37 38 Revision 1.12 2004/01/23 21:37:08 cheshire 39 For consistency, rename multicastSocket to multicastSocket4, and multicastSocketv6 to multicastSocket6 40 41 Revision 1.11 2003/12/11 03:03:51 rpantos 42 Clean up mDNSPosix so that it builds on OS X again. 43 44 Revision 1.10 2003/12/08 20:47:02 rpantos 45 Add support for mDNSResponder on Linux. 46 47 Revision 1.9 2003/10/30 19:25:19 cheshire 48 Fix warning on certain compilers 49 50 Revision 1.8 2003/08/12 19:56:26 cheshire 51 Update to APSL 2.0 52 53 Revision 1.7 2003/07/02 21:19:59 cheshire 54 <rdar://problem/3313413> Update copyright notices, etc., in source code comments 55 56 Revision 1.6 2003/03/13 03:46:21 cheshire 57 Fixes to make the code build on Linux 58 59 Revision 1.5 2003/03/08 00:35:56 cheshire 60 Switched to using new "mDNS_Execute" model (see "mDNSCore/Implementer Notes.txt") 61 62 Revision 1.4 2002/12/23 22:13:31 jgraessl 63 64 Reviewed by: Stuart Cheshire 65 Initial IPv6 support for mDNSResponder. 66 67 Revision 1.3 2002/09/21 20:44:53 zarzycki 68 Added APSL info 69 70 Revision 1.2 2002/09/19 04:20:44 cheshire 71 Remove high-ascii characters that confuse some systems 72 73 Revision 1.1 2002/09/17 06:24:34 cheshire 74 First checkin 75 76 */ 77 78 #pragma ident "%Z%%M% %I% %E% SMI" 79 80 #ifndef __mDNSPlatformPosix_h 81 #define __mDNSPlatformPosix_h 82 83 #include <signal.h> 84 #include <sys/time.h> 85 86 #ifdef __cplusplus 87 extern "C" { 88 #endif 89 90 // PosixNetworkInterface is a record extension of the core NetworkInterfaceInfo 91 // type that supports extra fields needed by the Posix platform. 92 // 93 // IMPORTANT: coreIntf must be the first field in the structure because 94 // we cast between pointers to the two different types regularly. 95 96 typedef struct PosixNetworkInterface PosixNetworkInterface; 97 98 struct PosixNetworkInterface 99 { 100 NetworkInterfaceInfo coreIntf; 101 const char * intfName; 102 PosixNetworkInterface * aliasIntf; 103 int index; 104 int multicastSocket4; 105 #if HAVE_IPV6 106 int multicastSocket6; 107 #endif 108 }; 109 110 // This is a global because debugf_() needs to be able to check its value 111 extern int gMDNSPlatformPosixVerboseLevel; 112 113 struct mDNS_PlatformSupport_struct 114 { 115 int unicastSocket4; 116 #if HAVE_IPV6 117 int unicastSocket6; 118 #endif 119 }; 120 121 #define uDNS_SERVERS_FILE "/etc/resolv.conf" 122 extern int ParseDNSServers(mDNS *m, const char *filePath); 123 extern mStatus mDNSPlatformPosixRefreshInterfaceList(mDNS *const m); 124 // See comment in implementation. 125 126 // Call mDNSPosixGetFDSet before calling select(), to update the parameters 127 // as may be necessary to meet the needs of the mDNSCore code. 128 // The timeout pointer MUST NOT be NULL. 129 // Set timeout->tv_sec to 0x3FFFFFFF if you want to have effectively no timeout 130 // After calling mDNSPosixGetFDSet(), call select(nfds, &readfds, NULL, NULL, &timeout); as usual 131 // After select() returns, call mDNSPosixProcessFDSet() to let mDNSCore do its work 132 extern void mDNSPosixGetFDSet(mDNS *m, int *nfds, fd_set *readfds, struct timeval *timeout); 133 extern void mDNSPosixProcessFDSet(mDNS *const m, fd_set *readfds); 134 135 typedef void (*mDNSPosixEventCallback)( void *context); 136 137 extern mStatus mDNSPosixAddFDToEventLoop( int fd, mDNSPosixEventCallback callback, void *context); 138 extern mStatus mDNSPosixRemoveFDFromEventLoop( int fd); 139 extern mStatus mDNSPosixListenForSignalInEventLoop( int signum); 140 extern mStatus mDNSPosixIgnoreSignalInEventLoop( int signum); 141 extern mStatus mDNSPosixRunEventLoopOnce( mDNS *m, const struct timeval *pTimeout, sigset_t *pSignalsReceived, mDNSBool *pDataDispatched); 142 143 #ifdef __cplusplus 144 } 145 #endif 146 147 #endif 148