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Diffstat (limited to 'lib/isc/include/isc/sockaddr.h')
| -rw-r--r-- | lib/isc/include/isc/sockaddr.h | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/lib/isc/include/isc/sockaddr.h b/lib/isc/include/isc/sockaddr.h new file mode 100644 index 0000000..9f3986b --- /dev/null +++ b/lib/isc/include/isc/sockaddr.h @@ -0,0 +1,248 @@ +/* + * Copyright (C) Internet Systems Consortium, Inc. ("ISC") + * + * SPDX-License-Identifier: MPL-2.0 + * + * 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. + */ + +#pragma once + +/*! \file isc/sockaddr.h */ + +#include <stdbool.h> + +#include <isc/lang.h> +#include <isc/net.h> +#include <isc/types.h> + +#include <sys/un.h> + +/* + * Any updates to this structure should also be applied in + * contrib/modules/dlz/dlz_minmal.h. + */ +struct isc_sockaddr { + union { + struct sockaddr sa; + struct sockaddr_in sin; + struct sockaddr_in6 sin6; + struct sockaddr_storage ss; + struct sockaddr_un sunix; + } 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 |