85 lines
1.6 KiB
C
85 lines
1.6 KiB
C
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/*
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* IP address processing
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* Copyright (c) 2003-2006, Jouni Malinen <j@w1.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Alternatively, this software may be distributed under the terms of BSD
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* license.
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*
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* See README and COPYING for more details.
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*/
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#include "includes.h"
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#include "common.h"
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#include "ip_addr.h"
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const char * hostapd_ip_txt(const struct hostapd_ip_addr *addr, char *buf,
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size_t buflen)
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{
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if (buflen == 0 || addr == NULL)
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return NULL;
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if (addr->af == AF_INET) {
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os_strlcpy(buf, inet_ntoa(addr->u.v4), buflen);
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} else {
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buf[0] = '\0';
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}
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#ifdef CONFIG_IPV6
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if (addr->af == AF_INET6) {
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if (inet_ntop(AF_INET6, &addr->u.v6, buf, buflen) == NULL)
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buf[0] = '\0';
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}
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#endif /* CONFIG_IPV6 */
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return buf;
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}
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int hostapd_ip_diff(struct hostapd_ip_addr *a, struct hostapd_ip_addr *b)
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{
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if (a == NULL && b == NULL)
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return 0;
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if (a == NULL || b == NULL)
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return 1;
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switch (a->af) {
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case AF_INET:
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if (a->u.v4.s_addr != b->u.v4.s_addr)
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return 1;
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break;
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#ifdef CONFIG_IPV6
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case AF_INET6:
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if (os_memcpy(&a->u.v6, &b->u.v6, sizeof(a->u.v6))
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!= 0)
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return 1;
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break;
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#endif /* CONFIG_IPV6 */
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}
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return 0;
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}
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int hostapd_parse_ip_addr(const char *txt, struct hostapd_ip_addr *addr)
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{
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#ifndef CONFIG_NATIVE_WINDOWS
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if (inet_aton(txt, &addr->u.v4)) {
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addr->af = AF_INET;
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return 0;
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}
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#ifdef CONFIG_IPV6
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if (inet_pton(AF_INET6, txt, &addr->u.v6) > 0) {
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addr->af = AF_INET6;
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return 0;
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}
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#endif /* CONFIG_IPV6 */
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#endif /* CONFIG_NATIVE_WINDOWS */
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return -1;
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}
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