131 lines
4.6 KiB
C
Executable File
131 lines
4.6 KiB
C
Executable File
/* -*- Mode: C; tab-width: 4 -*-
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*
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* Copyright (c) 2002-2004 Apple Computer, Inc. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __mDNSUNP_h
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#define __mDNSUNP_h
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#ifdef HAVE_LINUX
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#include <linux/socket.h>
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#define IPV6_2292_PKTINFO IPV6_2292PKTINFO
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#define IPV6_2292_HOPLIMIT IPV6_2292HOPLIMIT
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#else
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// The following are the supported non-linux posix OSes -
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// netbsd, freebsd and openbsd.
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#if HAVE_IPV6
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#define IPV6_2292_PKTINFO 19
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#define IPV6_2292_HOPLIMIT 20
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#endif
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef NOT_HAVE_SOCKLEN_T
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typedef unsigned int socklen_t;
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#endif
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#if !defined(_SS_MAXSIZE) && !defined(__ANDROID__)
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#if HAVE_IPV6
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#define sockaddr_storage sockaddr_in6
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#else
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#define sockaddr_storage sockaddr
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#endif // HAVE_IPV6
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#endif // !defined(_SS_MAXSIZE) && !defined(__ANDROID__)
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#ifndef NOT_HAVE_SA_LEN
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#define GET_SA_LEN(X) (sizeof(struct sockaddr) > ((struct sockaddr*)&(X))->sa_len ? \
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sizeof(struct sockaddr) : ((struct sockaddr*)&(X))->sa_len )
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#elif HAVE_IPV6
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#define GET_SA_LEN(X) (((struct sockaddr*)&(X))->sa_family == AF_INET ? sizeof(struct sockaddr_in) : \
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((struct sockaddr*)&(X))->sa_family == AF_INET6 ? sizeof(struct sockaddr_in6) : sizeof(struct sockaddr))
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#else
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#define GET_SA_LEN(X) (((struct sockaddr*)&(X))->sa_family == AF_INET ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr))
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#endif
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#define IFI_NAME 16 /* same as IFNAMSIZ in <net/if.h> */
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#define IFI_HADDR 8 /* allow for 64-bit EUI-64 in future */
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// Renamed from my_in_pktinfo because in_pktinfo is used by Linux.
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struct my_in_pktinfo {
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struct sockaddr_storage ipi_addr;
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int ipi_ifindex; /* received interface index */
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char ipi_ifname[IFI_NAME]; /* received interface name */
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};
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/* From the text (Stevens, section 20.2): */
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/* 'As an example of recvmsg we will write a function named recvfrom_flags that */
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/* is similar to recvfrom but also returns: */
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/* 1. the returned msg_flags value, */
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/* 2. the destination addres of the received datagram (from the IP_RECVDSTADDR socket option, and */
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/* 3. the index of the interface on which the datagram was received (the IP_RECVIF socket option).' */
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extern ssize_t recvfrom_flags(int fd, void *ptr, size_t nbytes, int *flagsp,
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struct sockaddr *sa, socklen_t *salenptr, struct my_in_pktinfo *pktp, u_char *ttl);
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struct ifi_info {
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char ifi_name[IFI_NAME]; /* interface name, null terminated */
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u_char ifi_haddr[IFI_HADDR]; /* hardware address */
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u_short ifi_hlen; /* #bytes in hardware address: 0, 6, 8 */
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short ifi_flags; /* IFF_xxx constants from <net/if.h> */
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short ifi_myflags; /* our own IFI_xxx flags */
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int ifi_index; /* interface index */
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struct sockaddr *ifi_addr; /* primary address */
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struct sockaddr *ifi_netmask;
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struct sockaddr *ifi_brdaddr;/* broadcast address */
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struct sockaddr *ifi_dstaddr;/* destination address */
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struct ifi_info *ifi_next; /* next of these structures */
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};
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#if defined(AF_INET6) && HAVE_IPV6 && HAVE_LINUX
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#define PROC_IFINET6_PATH "/proc/net/if_inet6"
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extern struct ifi_info *get_ifi_info_linuxv6(int family, int doaliases);
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#endif
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#if defined(AF_INET6) && HAVE_IPV6
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#define INET6_ADDRSTRLEN 46 /*Maximum length of IPv6 address */
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#endif
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#define IFI_ALIAS 1 /* ifi_addr is an alias */
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/* From the text (Stevens, section 16.6): */
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/* 'Since many programs need to know all the interfaces on a system, we will develop a */
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/* function of our own named get_ifi_info that returns a linked list of structures, one */
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/* for each interface that is currently "up."' */
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extern struct ifi_info *get_ifi_info(int family, int doaliases);
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/* 'The free_ifi_info function, which takes a pointer that was */
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/* returned by get_ifi_info and frees all the dynamic memory.' */
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extern void free_ifi_info(struct ifi_info *);
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#ifdef NOT_HAVE_DAEMON
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extern int daemon(int nochdir, int noclose);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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