/* * Copyright (C) 2004 Internet Systems Consortium, Inc. ("ISC") * Copyright (C) 1999-2003 Internet Software Consortium. * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR * PERFORMANCE OF THIS SOFTWARE. */ /* $Id: net.h,v 1.31.2.2.10.8 2004/04/29 01:31:23 marka Exp $ */ #ifndef ISC_NET_H #define ISC_NET_H 1 /***** ***** Module Info *****/ /* * Basic Networking Types * * This module is responsible for defining the following basic networking * types: * * struct in_addr * struct in6_addr * struct in6_pktinfo * struct sockaddr * struct sockaddr_in * struct sockaddr_in6 * in_port_t * * It ensures that the AF_ and PF_ macros are defined. * * It declares ntoh[sl]() and hton[sl](). * * It declares inet_aton(), inet_ntop(), and inet_pton(). * * It ensures that INADDR_LOOPBACK, INADDR_ANY, IN6ADDR_ANY_INIT, * in6addr_any, and in6addr_loopback are available. * * It ensures that IN_MULTICAST() is available to check for multicast * addresses. * * MP: * No impact. * * Reliability: * No anticipated impact. * * Resources: * N/A. * * Security: * No anticipated impact. * * Standards: * BSD Socket API * RFC 2553 */ /*** *** Imports. ***/ #include #include #include /* Contractual promise. */ #include #include /* Contractual promise. */ #include /* Contractual promise. */ #ifdef ISC_PLATFORM_NEEDNETINETIN6H #include /* Required on UnixWare. */ #endif #ifdef ISC_PLATFORM_NEEDNETINET6IN6H #include /* Required on BSD/OS for in6_pktinfo. */ #endif #ifndef ISC_PLATFORM_HAVEIPV6 #include /* Contractual promise. */ #endif #include #include #ifdef ISC_PLATFORM_HAVEINADDR6 #define in6_addr in_addr6 /* Required for pre RFC2133 implementations. */ #endif #ifdef ISC_PLATFORM_HAVEIPV6 /* * Required for some pre RFC2133 implementations. * IN6ADDR_ANY_INIT and IN6ADDR_LOOPBACK_INIT were added in * draft-ietf-ipngwg-bsd-api-04.txt or draft-ietf-ipngwg-bsd-api-05.txt. * If 's6_addr' is defined then assume that there is a union and three * levels otherwise assume two levels required. */ #ifndef IN6ADDR_ANY_INIT #ifdef s6_addr #define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } } #else #define IN6ADDR_ANY_INIT { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } #endif #endif #ifndef IN6ADDR_LOOPBACK_INIT #ifdef s6_addr #define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } } #else #define IN6ADDR_LOOPBACK_INIT { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } #endif #endif #ifndef IN6_IS_ADDR_V4MAPPED #define IN6_IS_ADDR_V4MAPPED(x) \ (memcmp((x)->s6_addr, in6addr_any.s6_addr, 10) == 0 && \ (x)->s6_addr[10] == 0xff && (x)->s6_addr[11] == 0xff) #endif #ifndef IN6_IS_ADDR_V4COMPAT #define IN6_IS_ADDR_V4COMPAT(x) \ (memcmp((x)->s6_addr, in6addr_any.s6_addr, 12) == 0 && \ ((x)->s6_addr[12] != 0 || (x)->s6_addr[13] != 0 || \ (x)->s6_addr[14] != 0 || \ ((x)->s6_addr[15] != 0 && (x)->s6_addr[15] != 1))) #endif #ifndef IN6_IS_ADDR_MULTICAST #define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff) #endif #ifndef IN6_IS_ADDR_LINKLOCAL #define IN6_IS_ADDR_LINKLOCAL(a) \ (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80)) #endif #ifndef IN6_IS_ADDR_SITELOCAL #define IN6_IS_ADDR_SITELOCAL(a) \ (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0)) #endif #ifndef IN6_IS_ADDR_LOOPBACK #define IN6_IS_ADDR_LOOPBACK(x) \ (memcmp((x)->s6_addr, in6addr_loopback.s6_addr, 16) == 0) #endif #endif #ifndef AF_INET6 #define AF_INET6 99 #endif #ifndef PF_INET6 #define PF_INET6 AF_INET6 #endif #ifndef INADDR_LOOPBACK #define INADDR_LOOPBACK 0x7f000001UL #endif #if 0 #ifndef ISC_PLATFORM_HAVEIN6PKTINFO struct in6_pktinfo { struct in6_addr ipi6_addr; /* src/dst IPv6 address */ unsigned int ipi6_ifindex; /* send/recv interface index */ }; #endif #endif /* * Cope with a missing in6addr_any and in6addr_loopback. */ #if defined(ISC_PLATFORM_HAVEIPV6) && defined(ISC_PLATFORM_NEEDIN6ADDRANY) extern const struct in6_addr isc_net_in6addrany; #define in6addr_any isc_net_in6addrany #endif #if defined(ISC_PLATFORM_HAVEIPV6) && defined(ISC_PLATFORM_NEEDIN6ADDRLOOPBACK) extern const struct in6_addr isc_net_in6addrloop; #define in6addr_loopback isc_net_in6addrloop #endif /* * Fix UnixWare 7.1.1's broken IN6_IS_ADDR_* definitions. */ #ifdef ISC_PLATFORM_FIXIN6ISADDR #undef IN6_IS_ADDR_GEOGRAPHIC #define IN6_IS_ADDR_GEOGRAPHIC(a) (((a)->S6_un.S6_l[0] & 0xE0) == 0x80) #undef IN6_IS_ADDR_IPX #define IN6_IS_ADDR_IPX(a) (((a)->S6_un.S6_l[0] & 0xFE) == 0x04) #undef IN6_IS_ADDR_LINKLOCAL #define IN6_IS_ADDR_LINKLOCAL(a) (((a)->S6_un.S6_l[0] & 0xC0FF) == 0x80FE) #undef IN6_IS_ADDR_MULTICAST #define IN6_IS_ADDR_MULTICAST(a) (((a)->S6_un.S6_l[0] & 0xFF) == 0xFF) #undef IN6_IS_ADDR_NSAP #define IN6_IS_ADDR_NSAP(a) (((a)->S6_un.S6_l[0] & 0xFE) == 0x02) #undef IN6_IS_ADDR_PROVIDER #define IN6_IS_ADDR_PROVIDER(a) (((a)->S6_un.S6_l[0] & 0xE0) == 0x40) #undef IN6_IS_ADDR_SITELOCAL #define IN6_IS_ADDR_SITELOCAL(a) (((a)->S6_un.S6_l[0] & 0xC0FF) == 0xC0FE) #endif /* ISC_PLATFORM_FIXIN6ISADDR */ /* * Ensure type in_port_t is defined. */ #ifdef ISC_PLATFORM_NEEDPORTT typedef isc_uint16_t in_port_t; #endif /* * If this system does not have MSG_TRUNC (as returned from recvmsg()) * ISC_PLATFORM_RECVOVERFLOW will be defined. This will enable the MSG_TRUNC * faking code in socket.c. */ #ifndef MSG_TRUNC #define ISC_PLATFORM_RECVOVERFLOW #endif #define ISC__IPADDR(x) ((isc_uint32_t)htonl((isc_uint32_t)(x))) #define ISC_IPADDR_ISMULTICAST(i) \ (((isc_uint32_t)(i) & ISC__IPADDR(0xf0000000)) \ == ISC__IPADDR(0xe0000000)) #define ISC_IPADDR_ISEXPERIMENTAL(i) \ (((isc_uint32_t)(i) & ISC__IPADDR(0xf0000000)) \ == ISC__IPADDR(0xf0000000)) /*** *** Functions. ***/ ISC_LANG_BEGINDECLS isc_result_t isc_net_probeipv4(void); /* * Check if the system's kernel supports IPv4. * * Returns: * * ISC_R_SUCCESS IPv4 is supported. * ISC_R_NOTFOUND IPv4 is not supported. * ISC_R_DISABLED IPv4 is disabled. * ISC_R_UNEXPECTED */ isc_result_t isc_net_probeipv6(void); /* * Check if the system's kernel supports IPv6. * * Returns: * * ISC_R_SUCCESS IPv6 is supported. * ISC_R_NOTFOUND IPv6 is not supported. * ISC_R_DISABLED IPv6 is disabled. * ISC_R_UNEXPECTED */ isc_result_t isc_net_probe_ipv6only(void); /* * Check if the system's kernel supports the IPV6_V6ONLY socket option. * * Returns: * * ISC_R_SUCCESS the option is supported for both TCP and UDP. * ISC_R_NOTFOUND IPv6 itself or the option is not supported. * ISC_R_UNEXPECTED */ isc_result_t isc_net_probe_ipv6pktinfo(void); /* * Check if the system's kernel supports the IPV6_(RECV)PKTINFO socket option * for UDP sockets. * * Returns: * * ISC_R_SUCCESS the option is supported. * ISC_R_NOTFOUND IPv6 itself or the option is not supported. * ISC_R_UNEXPECTED */ void isc_net_disableipv4(void); void isc_net_disableipv6(void); void isc_net_enableipv4(void); void isc_net_enableipv6(void); #ifdef ISC_PLATFORM_NEEDNTOP const char * isc_net_ntop(int af, const void *src, char *dst, size_t size); #define inet_ntop isc_net_ntop #endif #ifdef ISC_PLATFORM_NEEDPTON int isc_net_pton(int af, const char *src, void *dst); #undef inet_pton #define inet_pton isc_net_pton #endif #ifdef ISC_PLATFORM_NEEDATON int isc_net_aton(const char *cp, struct in_addr *addr); #define inet_aton isc_net_aton #endif ISC_LANG_ENDDECLS #endif /* ISC_NET_H */