mirror of
https://github.com/ntop/ntopng.git
synced 2026-04-28 23:19:33 +00:00
161 lines
4.4 KiB
Lua
161 lines
4.4 KiB
Lua
--
|
|
-- (C) 2019-21 - ntop.org
|
|
--
|
|
|
|
dirs = ntop.getDirs()
|
|
package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
|
|
|
|
local alert_severities = require "alert_severities"
|
|
local alert_consts = require("alert_consts")
|
|
local alerts_api = require "alerts_api"
|
|
local companion_interface_utils = require "companion_interface_utils"
|
|
|
|
local syslog_utils = {}
|
|
|
|
-- #################################################################
|
|
|
|
local syslog_facility = {
|
|
[0] = "kernel messages",
|
|
[1] = "user-level messages",
|
|
[2] = "mail system",
|
|
[3] = "system daemons",
|
|
[4] = "**security/authorization messages",
|
|
[5] = "messages generated internally by syslog",
|
|
[6] = "line printer subsystem",
|
|
[7] = "network news subsystem",
|
|
[8] = "UUCP subsystem",
|
|
[9] = "clock daemon",
|
|
[10] = "security/authorization messages",
|
|
[11] = "FTP daemon",
|
|
[12] = "NTP subsystem",
|
|
[13] = "log audit",
|
|
[14] = "log alert",
|
|
[15] = "clock daemon",
|
|
}
|
|
|
|
------------------------------------------------------------------------
|
|
|
|
local syslog_level = {
|
|
[0] = "EMERGENCY",
|
|
[1] = "ALERT",
|
|
[2] = "CRITICAL",
|
|
[3] = "ERROR",
|
|
[4] = "WARNING",
|
|
[5] = "NOTICE",
|
|
[6] = "INFORMATIONAL",
|
|
[7] = "DEBUG",
|
|
}
|
|
|
|
------------------------------------------------------------------------
|
|
|
|
-- The function below returns a subtype for the log based on a simple hash
|
|
local function getLogSubtype(line)
|
|
local hash = 0
|
|
for i = 1, #line do
|
|
hash = hash + line:byte(i)
|
|
end
|
|
return tostring(hash)
|
|
end
|
|
|
|
------------------------------------------------------------------------
|
|
|
|
function syslog_utils.handle_event(message, host, priority, level_threshold)
|
|
-- Priority = Facility * 8 + Level
|
|
local facility = math.floor(priority / 8)
|
|
local level = priority - (facility * 8)
|
|
|
|
local facility_name = syslog_facility[facility] or ""
|
|
local level_name = syslog_level[level] or ""
|
|
|
|
-- traceError(TRACE_NORMAL, TRACE_CONSOLE, "[host="..host.."][facility="..facility_name.."][level="..level_name.."][message="..message.."]")
|
|
|
|
traceError(TRACE_NORMAL, TRACE_CONSOLE, "[host="..host.."]")
|
|
|
|
-- Discard info messages
|
|
if level <= level_threshold then
|
|
|
|
local entity = alerts_api.hostAlertEntity(host, 0)
|
|
|
|
local severity = alert_severities.notice
|
|
if level <= 3 then
|
|
severity = alert_severities.error
|
|
elseif level <= 4 then
|
|
severity = alert_severities.warning
|
|
end
|
|
|
|
local type_info = alert_consts.alert_types.host_alert_host_log.new(
|
|
host,
|
|
level_name,
|
|
facility_name,
|
|
message)
|
|
|
|
type_info:set_subtype(getLogSubtype(message))
|
|
type_info:set_severity(severity)
|
|
|
|
-- Deliver alert
|
|
type_info:store(entity)
|
|
|
|
-- Deliver to companion if any
|
|
local companion_of = companion_interface_utils.getCurrentCompanionOf(interface.getId())
|
|
local curr_iface = tostring(interface.getId())
|
|
for _, m in pairs(companion_of) do
|
|
interface.select(m)
|
|
type_info:store(entity)
|
|
end
|
|
interface.select(curr_iface)
|
|
|
|
return true
|
|
end
|
|
|
|
return false
|
|
end
|
|
|
|
-- #################################################################
|
|
|
|
local function getProducersMapKey(ifid)
|
|
return string.format("ntopng.syslog.ifid_%d.producers_map", ifid)
|
|
end
|
|
|
|
------------------------------------------------------------------------
|
|
|
|
function syslog_utils.getProducers(ifid)
|
|
local key = getProducersMapKey(ifid)
|
|
local providers = ntop.getHashAllCache(key) or {}
|
|
|
|
local res = {}
|
|
for host, producer in pairs(providers) do
|
|
res[#res + 1] = {
|
|
host = host,
|
|
producer = producer,
|
|
producer_title = i18n(producer.."_collector.title"),
|
|
}
|
|
end
|
|
|
|
return res
|
|
end
|
|
|
|
------------------------------------------------------------------------
|
|
|
|
function syslog_utils.hasProducer(ifid, host)
|
|
local key = getProducersMapKey(ifid)
|
|
local producer_type = ntop.getHashCache(key, host)
|
|
return not isEmptyString(producer_type)
|
|
end
|
|
|
|
------------------------------------------------------------------------
|
|
|
|
function syslog_utils.addProducer(ifid, host, producer_type)
|
|
local key = getProducersMapKey(ifid)
|
|
ntop.setHashCache(key, host, producer_type)
|
|
end
|
|
|
|
------------------------------------------------------------------------
|
|
|
|
function syslog_utils.deleteProducer(ifid, host)
|
|
local key = getProducersMapKey(ifid)
|
|
ntop.delHashCache(key, host)
|
|
end
|
|
|
|
------------------------------------------------------------------------
|
|
|
|
return syslog_utils
|