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81c927f80a
The zone ID part in a host part is the name of the network interface (which by chance is the string representation of the ID with GNRC), not the ID.
79 lines
1.7 KiB
C
79 lines
1.7 KiB
C
/*
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* Copyright (C) 2021 ML!PA Consulting GmbH
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @{
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*
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* @file
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* @author Benjamin Valentin <benjamin.valentin@ml-pa.com>
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*/
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#include <errno.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include "net/utils.h"
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#ifdef MODULE_SOCK_DNS
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#include "net/af.h"
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#include "net/sock/dns.h"
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#endif
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/* get the next netif, returns true if there are more */
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static bool _netif_get(netif_t **current_netif)
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{
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netif_t *netif = *current_netif;
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netif = netif_iter(netif);
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*current_netif = netif;
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return netif_iter(netif);
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}
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int netutils_get_ipv6(ipv6_addr_t *addr, netif_t **netif, const char *hostname)
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{
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*netif = NULL;
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if (hostname == NULL) {
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return -EINVAL;
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}
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#ifdef MODULE_SOCK_DNS
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/* hostname is not an IPv6 address */
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if (strchr(hostname, ':') == NULL) {
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int res = sock_dns_query(hostname, addr, AF_INET6);
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if (res < 0) {
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return res;
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}
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return 0;
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}
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#endif
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/* search for interface ID */
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size_t len = strlen(hostname);
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char *iface = strchr(hostname, '%');
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if (iface) {
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*netif = netif_get_by_name(iface + 1);
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len -= strlen(iface);
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if (*netif == NULL) {
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return -EINVAL;
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}
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}
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/* preliminary select the first interface */
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else if (_netif_get(netif)) {
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/* don't take it if there is more than one interface */
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*netif = NULL;
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}
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if (ipv6_addr_from_buf(addr, hostname, len) == NULL) {
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return -EINVAL;
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}
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return 0;
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}
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/** @} */
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