1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
#include "nest/bird.h"
#include "lib/ip.h"
#include "lib/net.h"
const u16 net_addr_length[] = {
[NET_IP4] = sizeof(net_addr_ip4),
[NET_IP6] = sizeof(net_addr_ip6),
[NET_VPN4] = sizeof(net_addr_vpn4),
[NET_VPN6] = sizeof(net_addr_vpn6)
};
int
net_format(const net_addr *N, char *buf, int buflen)
{
net_addr_union *n = (void *) N;
/* FIXME: quick hack */
switch (n->n.type)
{
case NET_IP4:
return bsnprintf(buf, buflen, "%I/%d", n->ip4.prefix, n->ip4.pxlen);
case NET_IP6:
return bsnprintf(buf, buflen, "%I/%d", n->ip6.prefix, n->ip6.pxlen);
case NET_VPN4:
return bsnprintf(buf, buflen, "%u:%u %I/%d", (u32) (n->vpn4.rd >> 32), (u32) n->vpn4.rd, n->vpn4.prefix, n->vpn4.pxlen);
case NET_VPN6:
return bsnprintf(buf, buflen, "%u:%u %I/%d", (u32) (n->vpn6.rd >> 32), (u32) n->vpn6.rd, n->vpn6.prefix, n->vpn6.pxlen);
}
return 0;
}
ip_addr
net_pxmask(const net_addr *a)
{
switch (a->type)
{
case NET_IP4:
case NET_VPN4:
return ipa_from_ip4(ip4_mkmask(net4_pxlen(a)));
case NET_IP6:
case NET_VPN6:
return ipa_from_ip6(ip6_mkmask(net6_pxlen(a)));
default:
return IPA_NONE;
}
}
static inline int net_validate_ip4(const net_addr_ip4 *n)
{
return (n->pxlen <= IP4_MAX_PREFIX_LENGTH) &&
ip4_zero(ip4_and(n->prefix, ip4_not(ip4_mkmask(n->pxlen))));
}
static inline int net_validate_ip6(const net_addr_ip6 *n)
{
return (n->pxlen <= IP6_MAX_PREFIX_LENGTH) &&
ip6_zero(ip6_and(n->prefix, ip6_not(ip6_mkmask(n->pxlen))));
}
int
net_validate(const net_addr *N)
{
switch (a->type)
{
case NET_IP4:
case NET_VPN4:
return net_validate_ip4((net_addr_ip4 *) N);
case NET_IP6:
case NET_VPN6:
return net_validate_ip6((net_addr_ip6 *) N);
default:
return 0;
}
}
int
net_classify(const net_addr *N)
{
net_addr_union *n = (void *) N;
switch (n->n.type)
{
case NET_IP4:
case NET_VPN4:
return ip4_zero(n->ip4.prefix) ? (IADDR_HOST | SCOPE_UNIVERSE) : ip4_classify(n->ip4.prefix);
case NET_IP6:
case NET_VPN6:
return ip6_zero(n->ip6.prefix) ? (IADDR_HOST | SCOPE_UNIVERSE) : ip6_classify(&n->ip6.prefix);
}
return 0;
}
|
