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/* * Copyright (C) Internet Systems Consortium, Inc. ("ISC") * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, you can obtain one at https://mozilla.org/MPL/2.0/. * * See the COPYRIGHT file distributed with this work for additional * information regarding copyright ownership. */ #ifndef ISC_SOCKADDR_H #define ISC_SOCKADDR_H 1 /*! \file isc/sockaddr.h */ #include <stdbool.h> #include <isc/lang.h> #include <isc/net.h> #include <isc/types.h> #ifdef ISC_PLATFORM_HAVESYSUNH #include <sys/un.h> #endif /* ifdef ISC_PLATFORM_HAVESYSUNH */ struct isc_sockaddr { union { struct sockaddr sa; struct sockaddr_in sin; struct sockaddr_in6 sin6; struct sockaddr_storage ss; #ifdef ISC_PLATFORM_HAVESYSUNH struct sockaddr_un sunix; #endif /* ifdef ISC_PLATFORM_HAVESYSUNH */ } type; unsigned int length; /* XXXRTH beginning? */ ISC_LINK(struct isc_sockaddr) link; }; #define ISC_SOCKADDR_CMPADDR \ 0x0001 /*%< compare the address \ * sin_addr/sin6_addr */ #define ISC_SOCKADDR_CMPPORT \ 0x0002 /*%< compare the port \ * sin_port/sin6_port */ #define ISC_SOCKADDR_CMPSCOPE \ 0x0004 /*%< compare the scope \ * sin6_scope */ #define ISC_SOCKADDR_CMPSCOPEZERO \ 0x0008 /*%< when comparing scopes \ * zero scopes always match */ ISC_LANG_BEGINDECLS bool isc_sockaddr_compare(const isc_sockaddr_t *a, const isc_sockaddr_t *b, unsigned int flags); /*%< * Compare the elements of the two address ('a' and 'b') as specified * by 'flags' and report if they are equal or not. * * 'flags' is set from ISC_SOCKADDR_CMP*. */ bool isc_sockaddr_equal(const isc_sockaddr_t *a, const isc_sockaddr_t *b); /*%< * Return true iff the socket addresses 'a' and 'b' are equal. */ bool isc_sockaddr_eqaddr(const isc_sockaddr_t *a, const isc_sockaddr_t *b); /*%< * Return true iff the address parts of the socket addresses * 'a' and 'b' are equal, ignoring the ports. */ bool isc_sockaddr_eqaddrprefix(const isc_sockaddr_t *a, const isc_sockaddr_t *b, unsigned int prefixlen); /*%< * Return true iff the most significant 'prefixlen' bits of the * socket addresses 'a' and 'b' are equal, ignoring the ports. * If 'b''s scope is zero then 'a''s scope will be ignored. */ unsigned int isc_sockaddr_hash(const isc_sockaddr_t *sockaddr, bool address_only); /*%< * Return a hash value for the socket address 'sockaddr'. If 'address_only' * is true, the hash value will not depend on the port. * * IPv6 addresses containing mapped IPv4 addresses generate the same hash * value as the equivalent IPv4 address. */ void isc_sockaddr_any(isc_sockaddr_t *sockaddr); /*%< * Return the IPv4 wildcard address. */ void isc_sockaddr_any6(isc_sockaddr_t *sockaddr); /*%< * Return the IPv6 wildcard address. */ void isc_sockaddr_anyofpf(isc_sockaddr_t *sockaddr, int family); /*%< * Set '*sockaddr' to the wildcard address of protocol family * 'family'. * * Requires: * \li 'family' is AF_INET or AF_INET6. */ void isc_sockaddr_fromin(isc_sockaddr_t *sockaddr, const struct in_addr *ina, in_port_t port); /*%< * Construct an isc_sockaddr_t from an IPv4 address and port. */ void isc_sockaddr_fromin6(isc_sockaddr_t *sockaddr, const struct in6_addr *ina6, in_port_t port); /*%< * Construct an isc_sockaddr_t from an IPv6 address and port. */ void isc_sockaddr_v6fromin(isc_sockaddr_t *sockaddr, const struct in_addr *ina, in_port_t port); /*%< * Construct an IPv6 isc_sockaddr_t representing a mapped IPv4 address. */ void isc_sockaddr_fromnetaddr(isc_sockaddr_t *sockaddr, const isc_netaddr_t *na, in_port_t port); /*%< * Construct an isc_sockaddr_t from an isc_netaddr_t and port. */ int isc_sockaddr_pf(const isc_sockaddr_t *sockaddr); /*%< * Get the protocol family of 'sockaddr'. * * Requires: * *\li 'sockaddr' is a valid sockaddr with an address family of AF_INET * or AF_INET6. * * Returns: * *\li The protocol family of 'sockaddr', e.g. PF_INET or PF_INET6. */ void isc_sockaddr_setport(isc_sockaddr_t *sockaddr, in_port_t port); /*%< * Set the port of 'sockaddr' to 'port'. */ in_port_t isc_sockaddr_getport(const isc_sockaddr_t *sockaddr); /*%< * Get the port stored in 'sockaddr'. */ isc_result_t isc_sockaddr_totext(const isc_sockaddr_t *sockaddr, isc_buffer_t *target); /*%< * Append a text representation of 'sockaddr' to the buffer 'target'. * The text will include both the IP address (v4 or v6) and the port. * The text is null terminated, but the terminating null is not * part of the buffer's used region. * * Returns: * \li ISC_R_SUCCESS * \li ISC_R_NOSPACE The text or the null termination did not fit. */ void isc_sockaddr_format(const isc_sockaddr_t *sa, char *array, unsigned int size); /*%< * Format a human-readable representation of the socket address '*sa' * into the character array 'array', which is of size 'size'. * The resulting string is guaranteed to be null-terminated. */ bool isc_sockaddr_ismulticast(const isc_sockaddr_t *sa); /*%< * Returns #true if the address is a multicast address. */ bool isc_sockaddr_isexperimental(const isc_sockaddr_t *sa); /* * Returns true if the address is a experimental (CLASS E) address. */ bool isc_sockaddr_islinklocal(const isc_sockaddr_t *sa); /*%< * Returns true if the address is a link local address. */ bool isc_sockaddr_issitelocal(const isc_sockaddr_t *sa); /*%< * Returns true if the address is a sitelocal address. */ bool isc_sockaddr_isnetzero(const isc_sockaddr_t *sa); /*%< * Returns true if the address is in net zero. */ isc_result_t isc_sockaddr_frompath(isc_sockaddr_t *sockaddr, const char *path); /* * Create a UNIX domain sockaddr that refers to path. * * Returns: * \li ISC_R_NOSPACE * \li ISC_R_NOTIMPLEMENTED * \li ISC_R_SUCCESS */ isc_result_t isc_sockaddr_fromsockaddr(isc_sockaddr_t *isa, const struct sockaddr *sa); #define ISC_SOCKADDR_FORMATSIZE \ sizeof("xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:XXX.XXX.XXX.XXX%SSSSSSSSSS#" \ "YYYYY") /*%< * Minimum size of array to pass to isc_sockaddr_format(). */ ISC_LANG_ENDDECLS #endif /* ISC_SOCKADDR_H */