7 This file is part of avahi.
9 avahi is free software; you can redistribute it and/or modify it
10 under the terms of the GNU Lesser General Public License as
11 published by the Free Software Foundation; either version 2.1 of the
12 License, or (at your option) any later version.
14 avahi is distributed in the hope that it will be useful, but WITHOUT
15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
17 Public License for more details.
19 You should have received a copy of the GNU Lesser General Public
20 License along with avahi; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
25 #include <sys/socket.h>
27 #include <avahi-common/cdecl.h>
29 /** \file address.h Defintions and functions to manipulate IP addresses. */
33 /** Protocol family specification, takes the values AVAHI_INET, AVAHI_INET6, AVAHI_UNSPEC */
34 typedef guchar AvahiProtocol;
36 /** Numeric network interface index. Takes OS dependent values and the special constant AVAHI_IF_UNSPEC */
37 typedef gint AvahiIfIndex;
39 /** Values for AvahiProtocol */
41 AVAHI_PROTO_INET = AF_INET, /**< IPv4 */
42 AVAHI_PROTO_INET6 = AF_INET6, /**< IPv6 */
43 AVAHI_PROTO_UNSPEC = AF_UNSPEC /**< Unspecified/all protocol(s) */
46 /** Special values for AvahiIfIndex */
48 AVAHI_IF_UNSPEC = -1 /**< Unspecifed/all interfaces */
51 /** An IPv4 address */
53 guint32 address; /**< Address data in network byte order. */
56 /** An IPv6 address */
58 guint8 address[16]; /**< Address data */
61 /** Protocol (address family) independent address structure */
63 AvahiProtocol family; /**< Address family */
66 AvahiIPv6Address ipv6; /** Address when IPv6 */
67 AvahiIPv4Address ipv4; /** Address when IPv4 */
68 guint8 data[1]; /** Type independant data field */
72 /** Return the address data size of the specified address. (4 for IPv4, 16 for IPv6) */
73 guint avahi_address_get_size(const AvahiAddress *a);
75 /** Compare two addresses. Returns 0 when equal, a negative value when a < b, a positive value when a > b. */
76 gint avahi_address_cmp(const AvahiAddress *a, const AvahiAddress *b);
78 /** Convert the specified address *a to a human readable character string */
79 gchar *avahi_address_snprint(char *ret_s, guint length, const AvahiAddress *a);
81 /** Convert the specifeid human readable character string to an
82 * address structure. Set af to AVAHI_UNSPEC for automatic address
83 * family detection. */
84 AvahiAddress *avahi_address_parse(const char *s, AvahiProtocol af, AvahiAddress *ret_addr);
86 /** Make an address structture of a sockaddr structure */
87 AvahiAddress *avahi_address_from_sockaddr(const struct sockaddr* sa, AvahiAddress *ret_addr);
89 /** Return the port number of a sockaddr structure (either IPv4 or IPv6) */
90 guint16 avahi_port_from_sockaddr(const struct sockaddr* sa);
92 /** Generate the DNS reverse lookup name for an IPv4 address. g_free() the result! */
93 gchar* avahi_reverse_lookup_name_ipv4(const AvahiIPv4Address *a);
95 /** Generate the modern DNS reverse lookup name for an IPv6 address, ending in ipv6.arpa. g_free() the result! */
96 gchar* avahi_reverse_lookup_name_ipv6_arpa(const AvahiIPv6Address *a);
98 /** Generate the historic DNS reverse lookup name for an IPv6 address, ending in ipv6.int. g_free() the result! */
99 gchar* avahi_reverse_lookup_name_ipv6_int(const AvahiIPv6Address *a);
101 /** Check whether the specified IPv6 address is in fact an
102 * encapsulated IPv4 address */
103 gboolean avahi_address_is_ipv4_in_ipv6(const AvahiAddress *a);