zeek/testing/btest/signatures/header-header-condition.bro
Jon Siwek e835a55229 Add IPv6 support to signature header conditions.
- "src-ip" and "dst-ip" conditions can now use IPv6 addresses/subnets.
  They must be written in colon-hexadecimal representation and enclosed
  in square brackets (e.g. [fe80::1]).  Addresses #774.

- "icmp6" is now a valid protocol for use with "ip-proto" and "header"
  conditions.  This allows signatures to be written that can match
  against ICMPv6 payloads.  Addresses #880.

- "ip6" is now a valid protocol for use with the "header" condition.
  (also the "ip-proto" condition, but it results in a no-op in that
  case since signatures apply only to the inner-most IP packet when
  packets are tunneled).  This allows signatures to match specifically
  against IPv6 packets (whereas "ip" only matches against IPv4 packets).

- "ip-proto" conditions can now match against IPv6 packets.  Before,
  IPv6 packets were just silently ignored which meant DPD based on
  signatures did not function for IPv6 -- protocol analyzers would only
  get attached to a connection over IPv6 based on the well-known ports
  set in the "dpd_config" table.
2012-10-17 11:11:51 -05:00

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# @TEST-EXEC: bro -b -s ip -r $TRACES/chksums/ip4-udp-good-chksum.pcap %INPUT >ip.out
# @TEST-EXEC: bro -b -s ip-mask -r $TRACES/chksums/ip4-udp-good-chksum.pcap %INPUT >ip-mask.out
# @TEST-EXEC: bro -b -s ip6 -r $TRACES/chksums/ip6-udp-good-chksum.pcap %INPUT >ip6.out
# @TEST-EXEC: bro -b -s udp -r $TRACES/chksums/ip4-udp-good-chksum.pcap %INPUT >udp.out
# @TEST-EXEC: bro -b -s tcp -r $TRACES/chksums/ip4-tcp-good-chksum.pcap %INPUT >tcp.out
# @TEST-EXEC: bro -b -s icmp -r $TRACES/chksums/ip4-icmp-good-chksum.pcap %INPUT >icmp.out
# @TEST-EXEC: bro -b -s icmp6 -r $TRACES/chksums/ip6-icmp6-good-chksum.pcap %INPUT >icmp6.out
# @TEST-EXEC: bro -b -s val-mask -r $TRACES/chksums/ip4-udp-good-chksum.pcap %INPUT >val-mask.out
# @TEST-EXEC: btest-diff ip.out
# @TEST-EXEC: btest-diff ip-mask.out
# @TEST-EXEC: btest-diff ip6.out
# @TEST-EXEC: btest-diff udp.out
# @TEST-EXEC: btest-diff tcp.out
# @TEST-EXEC: btest-diff icmp.out
# @TEST-EXEC: btest-diff icmp6.out
# @TEST-EXEC: btest-diff val-mask.out
@TEST-START-FILE ip.sig
signature id {
header ip[10:1] == 0x7c
event "ip"
}
@TEST-END-FILE
@TEST-START-FILE ip-mask.sig
signature id {
header ip[16:4] == 127.0.0.0/24
event "ip-mask"
}
@TEST-END-FILE
@TEST-START-FILE ip6.sig
signature id {
header ip6[10:1] == 0x04
event "ip6"
}
@TEST-END-FILE
@TEST-START-FILE udp.sig
signature id {
header udp[2:1] == 0x32
event "udp"
}
@TEST-END-FILE
@TEST-START-FILE tcp.sig
signature id {
header tcp[3:4] == 0x50000000
event "tcp"
}
@TEST-END-FILE
@TEST-START-FILE icmp.sig
signature id {
header icmp[2:2] == 0xf7ff
event "icmp"
}
@TEST-END-FILE
@TEST-START-FILE icmp6.sig
signature id {
header icmp6[0:1] == 0x80
event "icmp6"
}
@TEST-END-FILE
@TEST-START-FILE val-mask.sig
signature id {
header udp[2:1] & 0x0f == 0x02
event "val-mask"
}
@TEST-END-FILE
event signature_match(state: signature_state, msg: string, data: string)
{
print fmt("signature_match %s - %s", state$conn$id, msg);
}