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/* $Id$ */
/***
This file is part of avahi.
avahi is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
avahi is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with avahi; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <netinet/in.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <string.h>
#include <assert.h>
#include <stdio.h>
#include "address.h"
#include "malloc.h"
size_t avahi_address_get_size(const AvahiAddress *a) {
assert(a);
if (a->proto == AVAHI_PROTO_INET)
return 4;
else if (a->proto == AVAHI_PROTO_INET6)
return 16;
return 0;
}
int avahi_address_cmp(const AvahiAddress *a, const AvahiAddress *b) {
assert(a);
assert(b);
if (a->proto != b->proto)
return -1;
return memcmp(a->data.data, b->data.data, avahi_address_get_size(a));
}
char *avahi_address_snprint(char *s, size_t length, const AvahiAddress *a) {
assert(s);
assert(length);
assert(a);
if (!(inet_ntop(avahi_proto_to_af(a->proto), a->data.data, s, length)))
return NULL;
return s;
}
char* avahi_reverse_lookup_name(char *ret_s, size_t length, const AvahiAddress *a) {
assert(ret_s);
assert(length > 0);
assert(a);
if (a->proto == AVAHI_PROTO_INET) {
uint32_t n = ntohl(a->data.ipv4.address);
snprintf(
ret_s, length,
"%u.%u.%u.%u.in-addr.arpa",
n & 0xFF, (n >> 8) & 0xFF, (n >> 16) & 0xFF, n >> 24);
} else {
assert(a->proto == AVAHI_PROTO_INET6);
snprintf(
ret_s, length,
"%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",
a->data.ipv6.address[15] & 0xF, a->data.ipv6.address[15] >> 4,
a->data.ipv6.address[14] & 0xF, a->data.ipv6.address[14] >> 4,
a->data.ipv6.address[13] & 0xF, a->data.ipv6.address[13] >> 4,
a->data.ipv6.address[12] & 0xF, a->data.ipv6.address[12] >> 4,
a->data.ipv6.address[11] & 0xF, a->data.ipv6.address[11] >> 4,
a->data.ipv6.address[10] & 0xF, a->data.ipv6.address[10] >> 4,
a->data.ipv6.address[ 9] & 0xF, a->data.ipv6.address[ 9] >> 4,
a->data.ipv6.address[ 8] & 0xF, a->data.ipv6.address[ 8] >> 4,
a->data.ipv6.address[ 7] & 0xF, a->data.ipv6.address[ 7] >> 4,
a->data.ipv6.address[ 6] & 0xF, a->data.ipv6.address[ 6] >> 4,
a->data.ipv6.address[ 5] & 0xF, a->data.ipv6.address[ 5] >> 4,
a->data.ipv6.address[ 4] & 0xF, a->data.ipv6.address[ 4] >> 4,
a->data.ipv6.address[ 3] & 0xF, a->data.ipv6.address[ 3] >> 4,
a->data.ipv6.address[ 2] & 0xF, a->data.ipv6.address[ 2] >> 4,
a->data.ipv6.address[ 1] & 0xF, a->data.ipv6.address[ 1] >> 4,
a->data.ipv6.address[ 0] & 0xF, a->data.ipv6.address[ 0] >> 4);
}
return ret_s;
}
AvahiAddress *avahi_address_parse(const char *s, AvahiProtocol proto, AvahiAddress *ret_addr) {
assert(ret_addr);
assert(s);
if (proto == AVAHI_PROTO_UNSPEC) {
if (inet_pton(AF_INET, s, ret_addr->data.data) <= 0) {
if (inet_pton(AF_INET6, s, ret_addr->data.data) <= 0)
return NULL;
else
ret_addr->proto = AVAHI_PROTO_INET6;
} else
ret_addr->proto = AVAHI_PROTO_INET;
} else {
if (inet_pton(avahi_proto_to_af(proto), s, ret_addr->data.data) <= 0)
return NULL;
ret_addr->proto = proto;
}
return ret_addr;
}
AvahiAddress *avahi_address_from_sockaddr(const struct sockaddr* sa, AvahiAddress *ret_addr) {
assert(sa);
assert(ret_addr);
assert(sa->sa_family == AF_INET || sa->sa_family == AF_INET6);
ret_addr->proto = avahi_af_to_proto(sa->sa_family);
if (sa->sa_family == AF_INET)
memcpy(&ret_addr->data.ipv4, &((const struct sockaddr_in*) sa)->sin_addr, sizeof(ret_addr->data.ipv4));
else
memcpy(&ret_addr->data.ipv6, &((const struct sockaddr_in6*) sa)->sin6_addr, sizeof(ret_addr->data.ipv6));
return ret_addr;
}
uint16_t avahi_port_from_sockaddr(const struct sockaddr* sa) {
assert(sa);
assert(sa->sa_family == AF_INET || sa->sa_family == AF_INET6);
if (sa->sa_family == AF_INET)
return ntohs(((const struct sockaddr_in*) sa)->sin_port);
else
return ntohs(((const struct sockaddr_in6*) sa)->sin6_port);
}
int avahi_address_is_ipv4_in_ipv6(const AvahiAddress *a) {
static const uint8_t ipv4_in_ipv6[] = {
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0xFF, 0xFF, 0xFF, 0xFF
};
assert(a);
if (a->proto != AVAHI_PROTO_INET6)
return 0;
return memcmp(a->data.ipv6.address, ipv4_in_ipv6, sizeof(ipv4_in_ipv6)) == 0;
}
int avahi_proto_to_af(AvahiProtocol proto) {
if (proto == AVAHI_PROTO_INET)
return AF_INET;
if (proto == AVAHI_PROTO_INET6)
return AF_INET6;
assert(proto == AVAHI_PROTO_UNSPEC);
return AF_UNSPEC;
}
AvahiProtocol avahi_af_to_proto(int af) {
if (af == AF_INET)
return AVAHI_PROTO_INET;
if (af == AF_INET6)
return AVAHI_PROTO_INET6;
assert(af == AF_UNSPEC);
return AVAHI_PROTO_UNSPEC;
}
const char* avahi_proto_to_string(AvahiProtocol proto) {
if (proto == AVAHI_PROTO_INET)
return "IPv4";
if (proto == AVAHI_PROTO_INET6)
return "IPv6";
assert(proto == AVAHI_PROTO_UNSPEC);
return "UNSPEC";
}
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