1 /* 2 * Copyright (C) 2004-2007, 2009 Internet Systems Consortium, Inc. ("ISC") 3 * Copyright (C) 1998-2003 Internet Software Consortium. 4 * 5 * Permission to use, copy, modify, and/or distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 11 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 15 * PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 /* $Id: sockaddr.h,v 1.57 2009/01/18 23:48:14 tbox Exp $ */ 19 20 #ifndef ISC_SOCKADDR_H 21 #define ISC_SOCKADDR_H 1 22 23 /*! \file isc/sockaddr.h */ 24 25 #include <isc/lang.h> 26 #include <isc/net.h> 27 #include <isc/types.h> 28 #ifdef ISC_PLATFORM_HAVESYSUNH 29 #include <sys/un.h> 30 #endif 31 32 struct isc_sockaddr { 33 union { 34 struct sockaddr sa; 35 struct sockaddr_in sin; 36 struct sockaddr_in6 sin6; 37 #ifdef ISC_PLATFORM_HAVESYSUNH 38 struct sockaddr_un sunix; 39 #endif 40 } type; 41 unsigned int length; /* XXXRTH beginning? */ 42 ISC_LINK(struct isc_sockaddr) link; 43 }; 44 45 typedef ISC_LIST(struct isc_sockaddr) isc_sockaddrlist_t; 46 47 #define ISC_SOCKADDR_CMPADDR 0x0001 /*%< compare the address 48 * sin_addr/sin6_addr */ 49 #define ISC_SOCKADDR_CMPPORT 0x0002 /*%< compare the port 50 * sin_port/sin6_port */ 51 #define ISC_SOCKADDR_CMPSCOPE 0x0004 /*%< compare the scope 52 * sin6_scope */ 53 #define ISC_SOCKADDR_CMPSCOPEZERO 0x0008 /*%< when comparing scopes 54 * zero scopes always match */ 55 56 ISC_LANG_BEGINDECLS 57 58 isc_boolean_t 59 isc_sockaddr_compare(const isc_sockaddr_t *a, const isc_sockaddr_t *b, 60 unsigned int flags); 61 /*%< 62 * Compare the elements of the two address ('a' and 'b') as specified 63 * by 'flags' and report if they are equal or not. 64 * 65 * 'flags' is set from ISC_SOCKADDR_CMP*. 66 */ 67 68 isc_boolean_t 69 isc_sockaddr_equal(const isc_sockaddr_t *a, const isc_sockaddr_t *b); 70 /*%< 71 * Return ISC_TRUE iff the socket addresses 'a' and 'b' are equal. 72 */ 73 74 isc_boolean_t 75 isc_sockaddr_eqaddr(const isc_sockaddr_t *a, const isc_sockaddr_t *b); 76 /*%< 77 * Return ISC_TRUE iff the address parts of the socket addresses 78 * 'a' and 'b' are equal, ignoring the ports. 79 */ 80 81 isc_boolean_t 82 isc_sockaddr_eqaddrprefix(const isc_sockaddr_t *a, const isc_sockaddr_t *b, 83 unsigned int prefixlen); 84 /*%< 85 * Return ISC_TRUE iff the most significant 'prefixlen' bits of the 86 * socket addresses 'a' and 'b' are equal, ignoring the ports. 87 * If 'b''s scope is zero then 'a''s scope will be ignored. 88 */ 89 90 unsigned int 91 isc_sockaddr_hash(const isc_sockaddr_t *sockaddr, isc_boolean_t address_only); 92 /*%< 93 * Return a hash value for the socket address 'sockaddr'. If 'address_only' 94 * is ISC_TRUE, the hash value will not depend on the port. 95 * 96 * IPv6 addresses containing mapped IPv4 addresses generate the same hash 97 * value as the equivalent IPv4 address. 98 */ 99 100 void 101 isc_sockaddr_any(isc_sockaddr_t *sockaddr); 102 /*%< 103 * Return the IPv4 wildcard address. 104 */ 105 106 void 107 isc_sockaddr_any6(isc_sockaddr_t *sockaddr); 108 /*%< 109 * Return the IPv6 wildcard address. 110 */ 111 112 void 113 isc_sockaddr_anyofpf(isc_sockaddr_t *sockaddr, int family); 114 /*%< 115 * Set '*sockaddr' to the wildcard address of protocol family 116 * 'family'. 117 * 118 * Requires: 119 * \li 'family' is AF_INET or AF_INET6. 120 */ 121 122 void 123 isc_sockaddr_fromin(isc_sockaddr_t *sockaddr, const struct in_addr *ina, 124 in_port_t port); 125 /*%< 126 * Construct an isc_sockaddr_t from an IPv4 address and port. 127 */ 128 129 void 130 isc_sockaddr_fromin6(isc_sockaddr_t *sockaddr, const struct in6_addr *ina6, 131 in_port_t port); 132 /*%< 133 * Construct an isc_sockaddr_t from an IPv6 address and port. 134 */ 135 136 void 137 isc_sockaddr_v6fromin(isc_sockaddr_t *sockaddr, const struct in_addr *ina, 138 in_port_t port); 139 /*%< 140 * Construct an IPv6 isc_sockaddr_t representing a mapped IPv4 address. 141 */ 142 143 void 144 isc_sockaddr_fromnetaddr(isc_sockaddr_t *sockaddr, const isc_netaddr_t *na, 145 in_port_t port); 146 /*%< 147 * Construct an isc_sockaddr_t from an isc_netaddr_t and port. 148 */ 149 150 int 151 isc_sockaddr_pf(const isc_sockaddr_t *sockaddr); 152 /*%< 153 * Get the protocol family of 'sockaddr'. 154 * 155 * Requires: 156 * 157 *\li 'sockaddr' is a valid sockaddr with an address family of AF_INET 158 * or AF_INET6. 159 * 160 * Returns: 161 * 162 *\li The protocol family of 'sockaddr', e.g. PF_INET or PF_INET6. 163 */ 164 165 void 166 isc_sockaddr_setport(isc_sockaddr_t *sockaddr, in_port_t port); 167 /*%< 168 * Set the port of 'sockaddr' to 'port'. 169 */ 170 171 in_port_t 172 isc_sockaddr_getport(const isc_sockaddr_t *sockaddr); 173 /*%< 174 * Get the port stored in 'sockaddr'. 175 */ 176 177 isc_result_t 178 isc_sockaddr_totext(const isc_sockaddr_t *sockaddr, isc_buffer_t *target); 179 /*%< 180 * Append a text representation of 'sockaddr' to the buffer 'target'. 181 * The text will include both the IP address (v4 or v6) and the port. 182 * The text is null terminated, but the terminating null is not 183 * part of the buffer's used region. 184 * 185 * Returns: 186 * \li ISC_R_SUCCESS 187 * \li ISC_R_NOSPACE The text or the null termination did not fit. 188 */ 189 190 void 191 isc_sockaddr_format(const isc_sockaddr_t *sa, char *array, unsigned int size); 192 /*%< 193 * Format a human-readable representation of the socket address '*sa' 194 * into the character array 'array', which is of size 'size'. 195 * The resulting string is guaranteed to be null-terminated. 196 */ 197 198 isc_boolean_t 199 isc_sockaddr_ismulticast(const isc_sockaddr_t *sa); 200 /*%< 201 * Returns #ISC_TRUE if the address is a multicast address. 202 */ 203 204 isc_boolean_t 205 isc_sockaddr_isexperimental(const isc_sockaddr_t *sa); 206 /* 207 * Returns ISC_TRUE if the address is a experimental (CLASS E) address. 208 */ 209 210 isc_boolean_t 211 isc_sockaddr_islinklocal(const isc_sockaddr_t *sa); 212 /*%< 213 * Returns ISC_TRUE if the address is a link local address. 214 */ 215 216 isc_boolean_t 217 isc_sockaddr_issitelocal(const isc_sockaddr_t *sa); 218 /*%< 219 * Returns ISC_TRUE if the address is a sitelocal address. 220 */ 221 222 isc_result_t 223 isc_sockaddr_frompath(isc_sockaddr_t *sockaddr, const char *path); 224 /* 225 * Create a UNIX domain sockaddr that refers to path. 226 * 227 * Returns: 228 * \li ISC_R_NOSPACE 229 * \li ISC_R_NOTIMPLEMENTED 230 * \li ISC_R_SUCCESS 231 */ 232 233 #define ISC_SOCKADDR_FORMATSIZE \ 234 sizeof("xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:XXX.XXX.XXX.XXX%SSSSSSSSSS#YYYYY") 235 /*%< 236 * Minimum size of array to pass to isc_sockaddr_format(). 237 */ 238 239 ISC_LANG_ENDDECLS 240 241 #endif /* ISC_SOCKADDR_H */ 242