1/* $Id$ */ 2 3/*** 4 This file is part of avahi. 5 6 avahi is free software; you can redistribute it and/or modify it 7 under the terms of the GNU Lesser General Public License as 8 published by the Free Software Foundation; either version 2.1 of the 9 License, or (at your option) any later version. 10 11 avahi is distributed in the hope that it will be useful, but WITHOUT 12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 13 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General 14 Public License for more details. 15 16 You should have received a copy of the GNU Lesser General Public 17 License along with avahi; if not, write to the Free Software 18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 19 USA. 20***/ 21 22#ifdef HAVE_CONFIG_H 23#include <config.h> 24#endif 25 26#include <sys/types.h> 27#include <netinet/in.h> 28#include <sys/socket.h> 29#include <arpa/inet.h> 30#include <string.h> 31#include <assert.h> 32#include <stdio.h> 33 34#include "address.h" 35#include "malloc.h" 36 37static size_t address_get_size(const AvahiAddress *a) { 38 assert(a); 39 40 if (a->proto == AVAHI_PROTO_INET) 41 return 4; 42 else if (a->proto == AVAHI_PROTO_INET6) 43 return 16; 44 45 return 0; 46} 47 48int avahi_address_cmp(const AvahiAddress *a, const AvahiAddress *b) { 49 assert(a); 50 assert(b); 51 52 if (a->proto != b->proto) 53 return -1; 54 55 return memcmp(a->data.data, b->data.data, address_get_size(a)); 56} 57 58char *avahi_address_snprint(char *s, size_t length, const AvahiAddress *a) { 59 assert(s); 60 assert(length); 61 assert(a); 62 63 if (!(inet_ntop(avahi_proto_to_af(a->proto), a->data.data, s, length))) 64 return NULL; 65 66 return s; 67} 68 69char* avahi_reverse_lookup_name(const AvahiAddress *a, char *ret_s, size_t length) { 70 assert(ret_s); 71 assert(length > 0); 72 assert(a); 73 74 if (a->proto == AVAHI_PROTO_INET) { 75 uint32_t n = ntohl(a->data.ipv4.address); 76 snprintf( 77 ret_s, length, 78 "%u.%u.%u.%u.in-addr.arpa", 79 n & 0xFF, (n >> 8) & 0xFF, (n >> 16) & 0xFF, n >> 24); 80 } else { 81 assert(a->proto == AVAHI_PROTO_INET6); 82 83 snprintf( 84 ret_s, length, 85 "%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.ip6.arpa", 86 a->data.ipv6.address[15] & 0xF, a->data.ipv6.address[15] >> 4, 87 a->data.ipv6.address[14] & 0xF, a->data.ipv6.address[14] >> 4, 88 a->data.ipv6.address[13] & 0xF, a->data.ipv6.address[13] >> 4, 89 a->data.ipv6.address[12] & 0xF, a->data.ipv6.address[12] >> 4, 90 a->data.ipv6.address[11] & 0xF, a->data.ipv6.address[11] >> 4, 91 a->data.ipv6.address[10] & 0xF, a->data.ipv6.address[10] >> 4, 92 a->data.ipv6.address[ 9] & 0xF, a->data.ipv6.address[ 9] >> 4, 93 a->data.ipv6.address[ 8] & 0xF, a->data.ipv6.address[ 8] >> 4, 94 a->data.ipv6.address[ 7] & 0xF, a->data.ipv6.address[ 7] >> 4, 95 a->data.ipv6.address[ 6] & 0xF, a->data.ipv6.address[ 6] >> 4, 96 a->data.ipv6.address[ 5] & 0xF, a->data.ipv6.address[ 5] >> 4, 97 a->data.ipv6.address[ 4] & 0xF, a->data.ipv6.address[ 4] >> 4, 98 a->data.ipv6.address[ 3] & 0xF, a->data.ipv6.address[ 3] >> 4, 99 a->data.ipv6.address[ 2] & 0xF, a->data.ipv6.address[ 2] >> 4, 100 a->data.ipv6.address[ 1] & 0xF, a->data.ipv6.address[ 1] >> 4, 101 a->data.ipv6.address[ 0] & 0xF, a->data.ipv6.address[ 0] >> 4); 102 } 103 104 return ret_s; 105} 106 107AvahiAddress *avahi_address_parse(const char *s, AvahiProtocol proto, AvahiAddress *ret_addr) { 108 assert(ret_addr); 109 assert(s); 110 111 if (proto == AVAHI_PROTO_UNSPEC) { 112 if (inet_pton(AF_INET, s, ret_addr->data.data) <= 0) { 113 if (inet_pton(AF_INET6, s, ret_addr->data.data) <= 0) 114 return NULL; 115 else 116 ret_addr->proto = AVAHI_PROTO_INET6; 117 } else 118 ret_addr->proto = AVAHI_PROTO_INET; 119 } else { 120 if (inet_pton(avahi_proto_to_af(proto), s, ret_addr->data.data) <= 0) 121 return NULL; 122 123 ret_addr->proto = proto; 124 } 125 126 return ret_addr; 127} 128 129int avahi_proto_to_af(AvahiProtocol proto) { 130 if (proto == AVAHI_PROTO_INET) 131 return AF_INET; 132 if (proto == AVAHI_PROTO_INET6) 133 return AF_INET6; 134 135 assert(proto == AVAHI_PROTO_UNSPEC); 136 return AF_UNSPEC; 137} 138 139AvahiProtocol avahi_af_to_proto(int af) { 140 if (af == AF_INET) 141 return AVAHI_PROTO_INET; 142 if (af == AF_INET6) 143 return AVAHI_PROTO_INET6; 144 145 assert(af == AF_UNSPEC); 146 return AVAHI_PROTO_UNSPEC; 147} 148 149const char* avahi_proto_to_string(AvahiProtocol proto) { 150 if (proto == AVAHI_PROTO_INET) 151 return "IPv4"; 152 if (proto == AVAHI_PROTO_INET6) 153 return "IPv6"; 154 155 assert(proto == AVAHI_PROTO_UNSPEC); 156 return "UNSPEC"; 157} 158