1 /*
2 * Copyright (C) 2012 by Darren Reed.
3 *
4 * See the IPFILTER.LICENCE file for details on licencing.
5 *
6 * $Id: parsewhoisline.c,v 1.2.2.5 2012/07/22 08:04:24 darren_r Exp $
7 */
8 #include "ipf.h"
9
10 /*
11 Microsoft Corp MICROSOFT19 (NET-198-136-97-0-1) 198.137.97.0 - 198.137.97.255
12 Microsoft Corp SAVV-S233053-6 (NET-206-79-74-32-1) 206.79.74.32 - 206.79.74.47
13 */
14 int
parsewhoisline(line,addrp,maskp)15 parsewhoisline(line, addrp, maskp)
16 char *line;
17 addrfamily_t *addrp;
18 addrfamily_t *maskp;
19 {
20 struct in_addr a1, a2;
21 char *src = line;
22 char *s = NULL;
23
24 if (line == NULL)
25 return -1;
26
27 while (*src != '\0') {
28 s = strchr(src, '(');
29 if (s == NULL)
30 break;
31
32 if (strncmp(s, "(NET", 4)) {
33 src = s + 1;
34 }
35 break;
36 }
37
38 if (s == NULL)
39 return -1;
40
41 memset(addrp, 0x00, sizeof(*maskp));
42 memset(maskp, 0x00, sizeof(*maskp));
43
44 if (*(s + 4) == '6') {
45 #ifdef USE_INET6
46 i6addr_t a61, a62;
47
48 s = strchr(s, ')');
49 if (s == NULL || *++s != ' ')
50 return -1;
51 /*
52 * Parse the IPv6
53 */
54 if (inet_pton(AF_INET6, s, &a61.in6) != 1)
55 return -1;
56
57 s = strchr(s, ' ');
58 if (s == NULL || strncmp(s, " - ", 3))
59 return -1;
60
61 s += 3;
62 if (inet_pton(AF_INET6, s, &a62) != 1)
63 return -1;
64
65 addrp->adf_addr = a61;
66 addrp->adf_family = AF_INET6;
67 addrp->adf_len = offsetof(addrfamily_t, adf_addr) +
68 sizeof(struct in6_addr);
69
70 maskp->adf_addr.i6[0] = ~(a62.i6[0] ^ a61.i6[0]);
71 maskp->adf_addr.i6[1] = ~(a62.i6[1] ^ a61.i6[1]);
72 maskp->adf_addr.i6[2] = ~(a62.i6[2] ^ a61.i6[2]);
73 maskp->adf_addr.i6[3] = ~(a62.i6[3] ^ a61.i6[3]);
74
75 /*
76 * If the mask that's been generated isn't a consecutive mask
77 * then we can't add it into a pool.
78 */
79 if (count6bits(maskp->adf_addr.i6) == -1)
80 return -1;
81
82 maskp->adf_family = AF_INET6;
83 maskp->adf_len = addrp->adf_len;
84
85 if (IP6_MASKNEQ(&addrp->adf_addr.in6, &maskp->adf_addr.in6,
86 &addrp->adf_addr.in6)) {
87 return -1;
88 }
89 return 0;
90 #else
91 return -1;
92 #endif
93 }
94
95 s = strchr(s, ')');
96 if (s == NULL || *++s != ' ')
97 return -1;
98
99 s++;
100
101 if (inet_aton(s, &a1) != 1)
102 return -1;
103
104 s = strchr(s, ' ');
105 if (s == NULL || strncmp(s, " - ", 3))
106 return -1;
107
108 s += 3;
109 if (inet_aton(s, &a2) != 1)
110 return -1;
111
112 addrp->adf_addr.in4 = a1;
113 addrp->adf_family = AF_INET;
114 addrp->adf_len = offsetof(addrfamily_t, adf_addr) +
115 sizeof(struct in_addr);
116 maskp->adf_addr.in4.s_addr = ~(a2.s_addr ^ a1.s_addr);
117
118 /*
119 * If the mask that's been generated isn't a consecutive mask then
120 * we can't add it into a pool.
121 */
122 if (count4bits(maskp->adf_addr.in4.s_addr) == -1)
123 return -1;
124
125 maskp->adf_family = AF_INET;
126 maskp->adf_len = addrp->adf_len;
127 bzero((char *)maskp + maskp->adf_len, sizeof(*maskp) - maskp->adf_len);
128 if ((addrp->adf_addr.in4.s_addr & maskp->adf_addr.in4.s_addr) !=
129 addrp->adf_addr.in4.s_addr)
130 return -1;
131 return 0;
132 }
133