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Filter: Add support for src/dst accessors for Flowspec and SADR

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This commit is contained in:
Ondrej Zajicek (work)
2019-12-09 04:23:01 +01:00
parent 21d09632a5
commit ff2ca10cba
7 changed files with 104 additions and 12 deletions
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68
filter/f-inst.c
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@@ -771,18 +771,76 @@
}
}
INST(FI_SADR_SRC, 1, 1) { /* Get SADR src prefix */
INST(FI_NET_SRC, 1, 1) { /* Get src prefix */
ARG(1, T_NET);
if (!net_is_sadr(v1.val.net))
runtime( "SADR expected" );
net_addr_ip6_sadr *net = (void *) v1.val.net;
net_addr_union *net = (void *) v1.val.net;
net_addr *src = falloc(sizeof(net_addr_ip6));
net_fill_ip6(src, net->src_prefix, net->src_pxlen);
const byte *part;
switch(v1.val.net->type) {
case NET_FLOW4:
part = flow4_get_part(&net->flow4, FLOW_TYPE_SRC_PREFIX);
if (part)
net_fill_ip4(src, flow_read_ip4_part(part), flow_read_pxlen(part));
else
net_fill_ip4(src, IP4_NONE, 0);
break;
case NET_FLOW6:
part = flow6_get_part(&net->flow6, FLOW_TYPE_SRC_PREFIX);
if (part)
net_fill_ip6(src, flow_read_ip6_part(part), flow_read_pxlen(part));
else
net_fill_ip6(src, IP6_NONE, 0);
break;
case NET_IP6_SADR:
net_fill_ip6(src, net->ip6_sadr.src_prefix, net->ip6_sadr.src_pxlen);
break;
default:
runtime( "Flow or SADR expected" );
}
RESULT(T_NET, net, src);
}
INST(FI_NET_DST, 1, 1) { /* Get dst prefix */
ARG(1, T_NET);
net_addr_union *net = (void *) v1.val.net;
net_addr *dst = falloc(sizeof(net_addr_ip6));
const byte *part;
switch(v1.val.net->type) {
case NET_FLOW4:
part = flow4_get_part(&net->flow4, FLOW_TYPE_DST_PREFIX);
if (part)
net_fill_ip4(dst, flow_read_ip4_part(part), flow_read_pxlen(part));
else
net_fill_ip4(dst, IP4_NONE, 0);
break;
case NET_FLOW6:
part = flow6_get_part(&net->flow6, FLOW_TYPE_DST_PREFIX);
if (part)
net_fill_ip6(dst, flow_read_ip6_part(part), flow_read_pxlen(part));
else
net_fill_ip6(dst, IP6_NONE, 0);
break;
case NET_IP6_SADR:
net_fill_ip6(dst, net->ip6_sadr.dst_prefix, net->ip6_sadr.dst_pxlen);
break;
default:
runtime( "Flow or SADR expected" );
}
RESULT(T_NET, net, dst);
}
INST(FI_ROA_MAXLEN, 1, 1) { /* Get ROA max prefix length */
ARG(1, T_NET);
if (!net_is_roa(v1.val.net))