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: mDNSUNP.h,v $ 20 Revision 1.19 2006/08/14 23:24:47 cheshire 21 Re-licensed mDNSResponder daemon source code under Apache License, Version 2.0 22 23 Revision 1.18 2005/04/08 21:37:57 ksekar 24 <rdar://problem/3792767> get_ifi_info doesn't return IPv6 interfaces on Linux 25 26 Revision 1.17 2004/12/17 19:32:43 cheshire 27 Add missing semicolon 28 29 Revision 1.16 2004/12/01 04:25:05 cheshire 30 <rdar://problem/3872803> Darwin patches for Solaris and Suse 31 Provide daemon() for platforms that don't have it 32 33 Revision 1.15 2004/11/30 22:37:01 cheshire 34 Update copyright dates and add "Mode: C; tab-width: 4" headers 35 36 Revision 1.14 2004/10/16 00:17:01 cheshire 37 <rdar://problem/3770558> Replace IP TTL 255 check with local subnet source address check 38 39 Revision 1.13 2004/03/20 05:37:09 cheshire 40 Fix contributed by Terry Lambert & Alfred Perlstein: 41 Don't use uint8_t -- it requires stdint.h, which doesn't exist on FreeBSD 4.x 42 43 Revision 1.12 2004/01/28 21:12:15 cheshire 44 Reconcile mDNSIPv6Support & HAVE_IPV6 into a single flag (HAVE_IPV6) 45 46 Revision 1.11 2003/12/13 05:43:09 bradley 47 Fixed non-sa_len and non-IPv6 version of GET_SA_LEN macro to cast as sockaddr to access 48 sa_family so it works with any sockaddr-compatible address structure (e.g. sockaddr_storage). 49 50 Revision 1.10 2003/12/11 03:03:51 rpantos 51 Clean up mDNSPosix so that it builds on OS X again. 52 53 Revision 1.9 2003/12/08 20:47:02 rpantos 54 Add support for mDNSResponder on Linux. 55 56 Revision 1.8 2003/08/12 19:56:26 cheshire 57 Update to APSL 2.0 58 59 Revision 1.7 2003/08/06 18:20:51 cheshire 60 Makefile cleanup 61 62 Revision 1.6 2003/07/02 21:19:59 cheshire 63 <rdar://problem/3313413> Update copyright notices, etc., in source code comments 64 65 Revision 1.5 2003/03/13 03:46:21 cheshire 66 Fixes to make the code build on Linux 67 68 Revision 1.4 2002/12/23 22:13:32 jgraessl 69 70 Reviewed by: Stuart Cheshire 71 Initial IPv6 support for mDNSResponder. 72 73 Revision 1.3 2002/09/21 20:44:53 zarzycki 74 Added APSL info 75 76 Revision 1.2 2002/09/19 04:20:44 cheshire 77 Remove high-ascii characters that confuse some systems 78 79 Revision 1.1 2002/09/17 06:24:35 cheshire 80 First checkin 81 82 */ 83 84 #pragma ident "%Z%%M% %I% %E% SMI" 85 86 #ifndef __mDNSUNP_h 87 #define __mDNSUNP_h 88 89 #include <sys/types.h> 90 #include <sys/socket.h> 91 #include <net/if.h> 92 #include <netinet/in.h> 93 #include <arpa/inet.h> 94 95 #ifdef HAVE_LINUX 96 #include <linux/socket.h> 97 #endif 98 99 #ifdef __cplusplus 100 extern "C" { 101 #endif 102 103 #ifdef NOT_HAVE_SOCKLEN_T 104 typedef unsigned int socklen_t; 105 #endif 106 107 #if !defined(_SS_MAXSIZE) 108 #if HAVE_IPV6 109 #define sockaddr_storage sockaddr_in6 110 #else 111 #define sockaddr_storage sockaddr 112 #endif // HAVE_IPV6 113 #endif // !defined(_SS_MAXSIZE) 114 115 #ifndef NOT_HAVE_SA_LEN 116 #define GET_SA_LEN(X) (sizeof(struct sockaddr) > ((struct sockaddr*)&(X))->sa_len ? \ 117 sizeof(struct sockaddr) : ((struct sockaddr*)&(X))->sa_len ) 118 #elif HAVE_IPV6 119 #define GET_SA_LEN(X) (((struct sockaddr*)&(X))->sa_family == AF_INET ? sizeof(struct sockaddr_in) : \ 120 ((struct sockaddr*)&(X))->sa_family == AF_INET6 ? sizeof(struct sockaddr_in6) : sizeof(struct sockaddr)) 121 #else 122 #define GET_SA_LEN(X) (((struct sockaddr*)&(X))->sa_family == AF_INET ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr)) 123 #endif 124 125 #define IFI_NAME 16 /* same as IFNAMSIZ in <net/if.h> */ 126 #define IFI_HADDR 8 /* allow for 64-bit EUI-64 in future */ 127 128 // Renamed from my_in_pktinfo because in_pktinfo is used by Linux. 129 130 struct my_in_pktinfo { 131 struct sockaddr_storage ipi_addr; 132 int ipi_ifindex; /* received interface index */ 133 char ipi_ifname[IFI_NAME]; /* received interface name */ 134 }; 135 136 /* From the text (Stevens, section 20.2): */ 137 /* 'As an example of recvmsg we will write a function named recvfrom_flags that */ 138 /* is similar to recvfrom but also returns: */ 139 /* 1. the returned msg_flags value, */ 140 /* 2. the destination addres of the received datagram (from the IP_RECVDSTADDR socket option, and */ 141 /* 3. the index of the interface on which the datagram was received (the IP_RECVIF socket option).' */ 142 extern ssize_t recvfrom_flags(int fd, void *ptr, size_t nbytes, int *flagsp, 143 struct sockaddr *sa, socklen_t *salenptr, struct my_in_pktinfo *pktp, u_char *ttl); 144 145 struct ifi_info { 146 char ifi_name[IFI_NAME]; /* interface name, null terminated */ 147 u_char ifi_haddr[IFI_HADDR]; /* hardware address */ 148 u_short ifi_hlen; /* #bytes in hardware address: 0, 6, 8 */ 149 short ifi_flags; /* IFF_xxx constants from <net/if.h> */ 150 short ifi_myflags; /* our own IFI_xxx flags */ 151 int ifi_index; /* interface index */ 152 struct sockaddr *ifi_addr; /* primary address */ 153 struct sockaddr *ifi_netmask; 154 struct sockaddr *ifi_brdaddr;/* broadcast address */ 155 struct sockaddr *ifi_dstaddr;/* destination address */ 156 struct ifi_info *ifi_next; /* next of these structures */ 157 }; 158 159 #if defined(AF_INET6) && HAVE_IPV6 && HAVE_LINUX 160 #define PROC_IFINET6_PATH "/proc/net/if_inet6" 161 extern struct ifi_info *get_ifi_info_linuxv6(int family, int doaliases); 162 #endif 163 164 #if defined(AF_INET6) && HAVE_IPV6 165 #define INET6_ADDRSTRLEN 46 /*Maximum length of IPv6 address */ 166 #endif 167 168 169 170 #define IFI_ALIAS 1 /* ifi_addr is an alias */ 171 172 /* From the text (Stevens, section 16.6): */ 173 /* 'Since many programs need to know all the interfaces on a system, we will develop a */ 174 /* function of our own named get_ifi_info that returns a linked list of structures, one */ 175 /* for each interface that is currently "up."' */ 176 extern struct ifi_info *get_ifi_info(int family, int doaliases); 177 178 /* 'The free_ifi_info function, which takes a pointer that was */ 179 /* returned by get_ifi_info and frees all the dynamic memory.' */ 180 extern void free_ifi_info(struct ifi_info *); 181 182 #ifdef NOT_HAVE_DAEMON 183 extern int daemon(int nochdir, int noclose); 184 #endif 185 186 #ifdef __cplusplus 187 } 188 #endif 189 190 #endif 191