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 __mDNSUNP_h 19#define __mDNSUNP_h 20 21#include <sys/types.h> 22#include <sys/socket.h> 23#include <net/if.h> 24#include <netinet/in.h> 25 26#ifdef HAVE_LINUX 27#include <linux/socket.h> 28#define IPV6_2292_PKTINFO IPV6_2292PKTINFO 29#define IPV6_2292_HOPLIMIT IPV6_2292HOPLIMIT 30#else 31// The following are the supported non-linux posix OSes - 32// netbsd, freebsd and openbsd. 33#if HAVE_IPV6 34#define IPV6_2292_PKTINFO 19 35#define IPV6_2292_HOPLIMIT 20 36#endif 37#endif 38 39#ifdef __cplusplus 40 extern "C" { 41#endif 42 43#ifdef NOT_HAVE_SOCKLEN_T 44 typedef unsigned int socklen_t; 45#endif 46 47#if !defined(_SS_MAXSIZE) && !defined(__ANDROID__) 48#if HAVE_IPV6 49#define sockaddr_storage sockaddr_in6 50#else 51#define sockaddr_storage sockaddr 52#endif // HAVE_IPV6 53#endif // !defined(_SS_MAXSIZE) && !defined(__ANDROID__) 54 55#ifndef NOT_HAVE_SA_LEN 56#define GET_SA_LEN(X) (sizeof(struct sockaddr) > ((struct sockaddr*)&(X))->sa_len ? \ 57 sizeof(struct sockaddr) : ((struct sockaddr*)&(X))->sa_len ) 58#elif HAVE_IPV6 59#define GET_SA_LEN(X) (((struct sockaddr*)&(X))->sa_family == AF_INET ? sizeof(struct sockaddr_in) : \ 60 ((struct sockaddr*)&(X))->sa_family == AF_INET6 ? sizeof(struct sockaddr_in6) : sizeof(struct sockaddr)) 61#else 62#define GET_SA_LEN(X) (((struct sockaddr*)&(X))->sa_family == AF_INET ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr)) 63#endif 64 65#define IFI_NAME 16 /* same as IFNAMSIZ in <net/if.h> */ 66#define IFI_HADDR 8 /* allow for 64-bit EUI-64 in future */ 67 68// Renamed from my_in_pktinfo because in_pktinfo is used by Linux. 69 70struct my_in_pktinfo { 71 struct sockaddr_storage ipi_addr; 72 int ipi_ifindex; /* received interface index */ 73 char ipi_ifname[IFI_NAME]; /* received interface name */ 74}; 75 76/* From the text (Stevens, section 20.2): */ 77/* 'As an example of recvmsg we will write a function named recvfrom_flags that */ 78/* is similar to recvfrom but also returns: */ 79/* 1. the returned msg_flags value, */ 80/* 2. the destination addres of the received datagram (from the IP_RECVDSTADDR socket option, and */ 81/* 3. the index of the interface on which the datagram was received (the IP_RECVIF socket option).' */ 82extern ssize_t recvfrom_flags(int fd, void *ptr, size_t nbytes, int *flagsp, 83 struct sockaddr *sa, socklen_t *salenptr, struct my_in_pktinfo *pktp, u_char *ttl); 84 85struct ifi_info { 86 char ifi_name[IFI_NAME]; /* interface name, null terminated */ 87 u_char ifi_haddr[IFI_HADDR]; /* hardware address */ 88 u_short ifi_hlen; /* #bytes in hardware address: 0, 6, 8 */ 89 short ifi_flags; /* IFF_xxx constants from <net/if.h> */ 90 short ifi_myflags; /* our own IFI_xxx flags */ 91 int ifi_index; /* interface index */ 92 struct sockaddr *ifi_addr; /* primary address */ 93 struct sockaddr *ifi_netmask; 94 struct sockaddr *ifi_brdaddr;/* broadcast address */ 95 struct sockaddr *ifi_dstaddr;/* destination address */ 96 struct ifi_info *ifi_next; /* next of these structures */ 97}; 98 99#if defined(AF_INET6) && HAVE_IPV6 && HAVE_LINUX 100#define PROC_IFINET6_PATH "/proc/net/if_inet6" 101extern struct ifi_info *get_ifi_info_linuxv6(int family, int doaliases); 102#endif 103 104#if defined(AF_INET6) && HAVE_IPV6 105#define INET6_ADDRSTRLEN 46 /*Maximum length of IPv6 address */ 106#endif 107 108 109 110#define IFI_ALIAS 1 /* ifi_addr is an alias */ 111 112/* From the text (Stevens, section 16.6): */ 113/* 'Since many programs need to know all the interfaces on a system, we will develop a */ 114/* function of our own named get_ifi_info that returns a linked list of structures, one */ 115/* for each interface that is currently "up."' */ 116extern struct ifi_info *get_ifi_info(int family, int doaliases); 117 118/* 'The free_ifi_info function, which takes a pointer that was */ 119/* returned by get_ifi_info and frees all the dynamic memory.' */ 120extern void free_ifi_info(struct ifi_info *); 121 122#ifdef NOT_HAVE_DAEMON 123extern int daemon(int nochdir, int noclose); 124#endif 125 126#ifdef __cplusplus 127 } 128#endif 129 130#endif 131