1 /*
2 * IP address processing
3 * Copyright (c) 2003-2006, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "includes.h"
10
11 #include "common.h"
12 #include "ip_addr.h"
13
hostapd_ip_txt(const struct hostapd_ip_addr * addr,char * buf,size_t buflen)14 const char * hostapd_ip_txt(const struct hostapd_ip_addr *addr, char *buf,
15 size_t buflen)
16 {
17 if (buflen == 0 || addr == NULL)
18 return NULL;
19
20 if (addr->af == AF_INET) {
21 os_strlcpy(buf, inet_ntoa(addr->u.v4), buflen);
22 } else {
23 buf[0] = '\0';
24 }
25 #ifdef CONFIG_IPV6
26 if (addr->af == AF_INET6) {
27 if (inet_ntop(AF_INET6, &addr->u.v6, buf, buflen) == NULL)
28 buf[0] = '\0';
29 }
30 #endif /* CONFIG_IPV6 */
31
32 return buf;
33 }
34
35
hostapd_ip_diff(struct hostapd_ip_addr * a,struct hostapd_ip_addr * b)36 int hostapd_ip_diff(struct hostapd_ip_addr *a, struct hostapd_ip_addr *b)
37 {
38 if (a == NULL && b == NULL)
39 return 0;
40 if (a == NULL || b == NULL)
41 return 1;
42
43 switch (a->af) {
44 case AF_INET:
45 if (a->u.v4.s_addr != b->u.v4.s_addr)
46 return 1;
47 break;
48 #ifdef CONFIG_IPV6
49 case AF_INET6:
50 if (os_memcmp(&a->u.v6, &b->u.v6, sizeof(a->u.v6)) != 0)
51 return 1;
52 break;
53 #endif /* CONFIG_IPV6 */
54 }
55
56 return 0;
57 }
58
59
hostapd_parse_ip_addr(const char * txt,struct hostapd_ip_addr * addr)60 int hostapd_parse_ip_addr(const char *txt, struct hostapd_ip_addr *addr)
61 {
62 #ifndef CONFIG_NATIVE_WINDOWS
63 if (inet_aton(txt, &addr->u.v4)) {
64 addr->af = AF_INET;
65 return 0;
66 }
67
68 #ifdef CONFIG_IPV6
69 if (inet_pton(AF_INET6, txt, &addr->u.v6) > 0) {
70 addr->af = AF_INET6;
71 return 0;
72 }
73 #endif /* CONFIG_IPV6 */
74 #endif /* CONFIG_NATIVE_WINDOWS */
75
76 return -1;
77 }
78