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#include "nest/bird.h"
#include "lib/ip.h"
#include "lib/net.h"
const char * const net_label[] = {
[NET_IP4] = "ipv4",
[NET_IP6] = "ipv6",
[NET_VPN4] = "vpn4",
[NET_VPN6] = "vpn6"
};
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),
[NET_ROA4] = sizeof(net_addr_roa4),
[NET_ROA6] = sizeof(net_addr_roa6)
};
const u8 net_max_prefix_length[] = {
[NET_IP4] = IP4_MAX_PREFIX_LENGTH,
[NET_IP6] = IP6_MAX_PREFIX_LENGTH,
[NET_VPN4] = IP4_MAX_PREFIX_LENGTH,
[NET_VPN6] = IP6_MAX_PREFIX_LENGTH,
[NET_ROA4] = IP4_MAX_PREFIX_LENGTH,
[NET_ROA6] = IP6_MAX_PREFIX_LENGTH
};
const u16 net_max_text_length[] = {
[NET_IP4] = 18, /* "255.255.255.255/32" */
[NET_IP6] = 43, /* "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff/128" */
[NET_VPN4] = 40, /* "4294967296:4294967296 255.255.255.255/32" */
[NET_VPN6] = 65, /* "4294967296:4294967296 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff/128" */
[NET_ROA4] = 30, /* "255.255.255.255/32 AS4294967295" */
[NET_ROA6] = 56, /* "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff/128 AS4294967295" */
};
int
net_format(const net_addr *N, char *buf, int buflen)
{
net_addr_union *n = (void *) N;
switch (n->n.type)
{
case NET_IP4:
return bsnprintf(buf, buflen, "%I4/%d", n->ip4.prefix, n->ip4.pxlen);
case NET_IP6:
return bsnprintf(buf, buflen, "%I6/%d", n->ip6.prefix, n->ip6.pxlen);
case NET_VPN4:
return bsnprintf(buf, buflen, "%u:%u %I4/%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 %I6/%d", (u32) (n->vpn6.rd >> 32), (u32) n->vpn6.rd, n->vpn6.prefix, n->vpn6.pxlen);
case NET_ROA4:
return bsnprintf(buf, buflen, "%I4/%u-%u AS%u", n->roa4.prefix, n->roa4.pxlen, n->roa4.max_pxlen, n->roa4.asn);
case NET_ROA6:
return bsnprintf(buf, buflen, "%I6/%u-%u AS%u", n->roa6.prefix, n->roa6.pxlen, n->roa6.max_pxlen, n->roa6.asn);
}
return 0;
}
ip_addr
net_pxmask(const net_addr *a)
{
switch (a->type)
{
case NET_IP4:
case NET_VPN4:
case NET_ROA4:
return ipa_from_ip4(ip4_mkmask(net4_pxlen(a)));
case NET_IP6:
case NET_VPN6:
case NET_ROA6:
return ipa_from_ip6(ip6_mkmask(net6_pxlen(a)));
default:
return IPA_NONE;
}
}
int
net_compare(const net_addr *a, const net_addr *b)
{
if (a->type != b->type)
return uint_cmp(a->type, b->type);
switch (a->type)
{
case NET_IP4:
return net_compare_ip4((const net_addr_ip4 *) a, (const net_addr_ip4 *) b);
case NET_IP6:
return net_compare_ip6((const net_addr_ip6 *) a, (const net_addr_ip6 *) b);
case NET_VPN4:
return net_compare_vpn4((const net_addr_vpn4 *) a, (const net_addr_vpn4 *) b);
case NET_VPN6:
return net_compare_vpn6((const net_addr_vpn6 *) a, (const net_addr_vpn6 *) b);
case NET_ROA4:
return net_compare_roa4((const net_addr_roa4 *) a, (const net_addr_roa4 *) b);
case NET_ROA6:
return net_compare_roa6((const net_addr_roa6 *) a, (const net_addr_roa6 *) b);
}
return 0;
}
int
net_validate(const net_addr *N)
{
switch (N->type)
{
case NET_IP4:
case NET_VPN4:
case NET_ROA4:
return net_validate_ip4((net_addr_ip4 *) N);
case NET_IP6:
case NET_VPN6:
case NET_ROA6:
return net_validate_ip6((net_addr_ip6 *) N);
default:
return 0;
}
}
void
net_normalize(net_addr *N)
{
net_addr_union *n = (void *) N;
switch (n->n.type)
{
case NET_IP4:
case NET_VPN4:
case NET_ROA4:
return net_normalize_ip4(&n->ip4);
case NET_IP6:
case NET_VPN6:
case NET_ROA6:
return net_normalize_ip6(&n->ip6);
}
}
int
net_classify(const net_addr *N)
{
net_addr_union *n = (void *) N;
switch (n->n.type)
{
case NET_IP4:
case NET_VPN4:
case NET_ROA4:
return ip4_zero(n->ip4.prefix) ? (IADDR_HOST | SCOPE_UNIVERSE) : ip4_classify(n->ip4.prefix);
case NET_IP6:
case NET_VPN6:
case NET_ROA6:
return ip6_zero(n->ip6.prefix) ? (IADDR_HOST | SCOPE_UNIVERSE) : ip6_classify(&n->ip6.prefix);
}
return IADDR_INVALID;
}
int
ipa_in_netX(const ip_addr a, const net_addr *n)
{
switch (n->type)
{
case NET_IP4:
case NET_VPN4:
case NET_ROA4:
if (!ipa_is_ip4(a)) return 0;
return ip4_zero(ip4_and(ip4_xor(ipa_to_ip4(a), net4_prefix(n)),
ip4_mkmask(net4_pxlen(n))));
case NET_IP6:
case NET_VPN6:
case NET_ROA6:
if (ipa_is_ip4(a)) return 0;
return ip6_zero(ip6_and(ip6_xor(ipa_to_ip6(a), net6_prefix(n)),
ip6_mkmask(net6_pxlen(n))));
default:
return 0;
}
}
int
net_in_netX(const net_addr *a, const net_addr *n)
{
if (a->type != n->type)
return 0;
return (net_pxlen(n) <= net_pxlen(a)) && ipa_in_netX(net_prefix(a), n);
}
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