zeek/scripts/base/protocols/syslog/main.zeek
Jon Siwek a994be9eeb Merge remote-tracking branch 'origin/topic/seth/zeek_init'
* origin/topic/seth/zeek_init:
  Some more testing fixes.
  Update docs and tests for bro_(init|done) -> zeek_(init|done)
  Implement the zeek_init handler.
2019-04-19 11:24:29 -07:00

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1.6 KiB
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##! Core script support for logging syslog messages. This script represents
##! one syslog message as one logged record.
@load ./consts
module Syslog;
export {
redef enum Log::ID += { LOG };
## The record type which contains the fields of the syslog log.
type Info: record {
## Timestamp when the syslog message was seen.
ts: time &log;
## Unique ID for the connection.
uid: string &log;
## The connection's 4-tuple of endpoint addresses/ports.
id: conn_id &log;
## Protocol over which the message was seen.
proto: transport_proto &log;
## Syslog facility for the message.
facility: string &log;
## Syslog severity for the message.
severity: string &log;
## The plain text message.
message: string &log;
};
}
redef record connection += {
syslog: Info &optional;
};
const ports = { 514/udp };
redef likely_server_ports += { ports };
event zeek_init() &priority=5
{
Log::create_stream(Syslog::LOG, [$columns=Info, $path="syslog"]);
Analyzer::register_for_ports(Analyzer::ANALYZER_SYSLOG, ports);
}
event syslog_message(c: connection, facility: count, severity: count, msg: string) &priority=5
{
local info: Info;
info$ts=network_time();
info$uid=c$uid;
info$id=c$id;
info$proto=get_port_transport_proto(c$id$resp_p);
info$facility=facility_codes[facility];
info$severity=severity_codes[severity];
info$message=msg;
c$syslog = info;
}
event syslog_message(c: connection, facility: count, severity: count, msg: string) &priority=-5
{
Log::write(Syslog::LOG, c$syslog);
}