zeek/testing/btest/signatures/dpd.zeek
2025-04-17 16:30:23 +02:00

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# @TEST-EXEC: zeek -b -s myftp -r $TRACES/ftp/ipv4.trace %INPUT >dpd-ipv4.out
# @TEST-EXEC: zeek -b -s myftp -r $TRACES/ftp/ipv6.trace %INPUT >dpd-ipv6.out
# @TEST-EXEC: zeek -b -r $TRACES/ftp/ipv4.trace %INPUT >nosig-ipv4.out
# @TEST-EXEC: zeek -b -r $TRACES/ftp/ipv6.trace %INPUT >nosig-ipv6.out
# @TEST-EXEC: btest-diff dpd-ipv4.out
# @TEST-EXEC: btest-diff dpd-ipv6.out
# @TEST-EXEC: btest-diff nosig-ipv4.out
# @TEST-EXEC: btest-diff nosig-ipv6.out
# DPD based on 'ip-proto' and 'payload' signatures should be independent
# of IP protocol.
# @TEST-START-FILE myftp.sig
signature my_ftp_client {
ip-proto == tcp
payload /(|.*[\n\r]) *[uU][sS][eE][rR] /
tcp-state originator
event "matched my_ftp_client"
}
signature my_ftp_server {
ip-proto == tcp
payload /[\n\r ]*(120|220)[^0-9].*[\n\r] *(230|331)[^0-9]/
tcp-state responder
requires-reverse-signature my_ftp_client
enable "ftp"
event "matched my_ftp_server"
}
# @TEST-END-FILE
@load base/utils/addrs
event zeek_init()
{
# no analyzer attached to any port by default, depends entirely on sigs
print "|Analyzer::all_registered_ports()|", |Analyzer::all_registered_ports()|;
}
event signature_match(state: signature_state, msg: string, data: string)
{
print fmt("signature_match %s - %s", state$conn$id, msg);
}
event ftp_request(c: connection, command: string, arg: string)
{
print fmt("ftp_request %s:%s - %s %s", addr_to_uri(c$id$orig_h),
port_to_count(c$id$orig_p), command, arg);
}
event ftp_reply(c: connection, code: count, msg: string, cont_resp: bool)
{
print fmt("ftp_reply %s:%s - %s %s", addr_to_uri(c$id$resp_h),
port_to_count(c$id$resp_p), code, msg);
}