/* * Copyright (C) 2004-2007, 2009 Internet Systems Consortium, Inc. ("ISC") * Copyright (C) 1998-2002 Internet Software Consortium. * * Permission to use, copy, modify, and/or 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: netaddr.h,v 1.35.332.2 2009/01/18 23:47:41 tbox Exp $ */ #ifndef ISC_NETADDR_H #define ISC_NETADDR_H 1 /*! \file isc/netaddr.h */ #include <isc/lang.h> #include <isc/net.h> #include <isc/types.h> #ifdef ISC_PLATFORM_HAVESYSUNH #include <sys/types.h> #include <sys/un.h> #endif ISC_LANG_BEGINDECLS struct isc_netaddr { unsigned int family; union { struct in_addr in; struct in6_addr in6; #ifdef ISC_PLATFORM_HAVESYSUNH char un[sizeof(((struct sockaddr_un *)0)->sun_path)]; #endif } type; isc_uint32_t zone; }; isc_boolean_t isc_netaddr_equal(const isc_netaddr_t *a, const isc_netaddr_t *b); /*%< * Compare network addresses 'a' and 'b'. Return #ISC_TRUE if * they are equal, #ISC_FALSE if not. */ isc_boolean_t isc_netaddr_eqprefix(const isc_netaddr_t *a, const isc_netaddr_t *b, unsigned int prefixlen); /*%< * Compare the 'prefixlen' most significant bits of the network * addresses 'a' and 'b'. If 'b''s scope is zero then 'a''s scope is * ignored. Return #ISC_TRUE if they are equal, #ISC_FALSE if not. */ isc_result_t isc_netaddr_masktoprefixlen(const isc_netaddr_t *s, unsigned int *lenp); /*%< * Convert a netmask in 's' into a prefix length in '*lenp'. * The mask should consist of zero or more '1' bits in the most * most significant part of the address, followed by '0' bits. * If this is not the case, #ISC_R_MASKNONCONTIG is returned. * * Returns: *\li #ISC_R_SUCCESS *\li #ISC_R_MASKNONCONTIG */ isc_result_t isc_netaddr_totext(const isc_netaddr_t *netaddr, isc_buffer_t *target); /*%< * Append a text representation of 'sockaddr' to the buffer 'target'. * The text is NOT null terminated. Handles IPv4 and IPv6 addresses. * * Returns: *\li #ISC_R_SUCCESS *\li #ISC_R_NOSPACE The text or the null termination did not fit. *\li #ISC_R_FAILURE Unspecified failure */ void isc_netaddr_format(const isc_netaddr_t *na, char *array, unsigned int size); /*%< * Format a human-readable representation of the network address '*na' * into the character array 'array', which is of size 'size'. * The resulting string is guaranteed to be null-terminated. */ #define ISC_NETADDR_FORMATSIZE \ sizeof("xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:XXX.XXX.XXX.XXX%SSSSSSSSSS") /*%< * Minimum size of array to pass to isc_netaddr_format(). */ void isc_netaddr_fromsockaddr(isc_netaddr_t *netaddr, const isc_sockaddr_t *source); void isc_netaddr_fromin(isc_netaddr_t *netaddr, const struct in_addr *ina); void isc_netaddr_fromin6(isc_netaddr_t *netaddr, const struct in6_addr *ina6); isc_result_t isc_netaddr_frompath(isc_netaddr_t *netaddr, const char *path); void isc_netaddr_setzone(isc_netaddr_t *netaddr, isc_uint32_t zone); isc_uint32_t isc_netaddr_getzone(const isc_netaddr_t *netaddr); void isc_netaddr_any(isc_netaddr_t *netaddr); /*%< * Return the IPv4 wildcard address. */ void isc_netaddr_any6(isc_netaddr_t *netaddr); /*%< * Return the IPv6 wildcard address. */ isc_boolean_t isc_netaddr_ismulticast(isc_netaddr_t *na); /*%< * Returns ISC_TRUE if the address is a multicast address. */ isc_boolean_t isc_netaddr_isexperimental(isc_netaddr_t *na); /*%< * Returns ISC_TRUE if the address is a experimental (CLASS E) address. */ isc_boolean_t isc_netaddr_islinklocal(isc_netaddr_t *na); /*%< * Returns #ISC_TRUE if the address is a link local address. */ isc_boolean_t isc_netaddr_issitelocal(isc_netaddr_t *na); /*%< * Returns #ISC_TRUE if the address is a site local address. */ void isc_netaddr_fromv4mapped(isc_netaddr_t *t, const isc_netaddr_t *s); /*%< * Convert an IPv6 v4mapped address into an IPv4 address. */ isc_result_t isc_netaddr_prefixok(const isc_netaddr_t *na, unsigned int prefixlen); /* * Test whether the netaddr 'na' and 'prefixlen' are consistant. * e.g. prefixlen within range. * na does not have bits set which are not covered by the prefixlen. * * Returns: * ISC_R_SUCCESS * ISC_R_RANGE prefixlen out of range * ISC_R_NOTIMPLEMENTED unsupported family * ISC_R_FAILURE extra bits. */ ISC_LANG_ENDDECLS #endif /* ISC_NETADDR_H */