File Manager
--[[
Copyright (c) 2011-2016, Vsevolod Stakhov <vsevolod@highsecure.ru>
Copyright (c) 2013-2015, Alexey Savelyev <info@homeweb.ru>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
]]--
-- Weight for checks_hellohost and checks_hello: 5 - very hard, 4 - hard, 3 - medium, 2 - low, 1 - very low.
-- From HFILTER_HELO_* and HFILTER_HOSTNAME_* symbols the maximum weight is selected in case of their actuating.
if confighelp then
return
end
local rspamd_regexp = require "rspamd_regexp"
local lua_util = require "lua_util"
local rspamc_local_helo = "rspamc.local"
local checks_hellohost = [[
/[-.0-9][0-9][.-]?nat/i 5
/homeuser[.-][0-9]/i 5
/[-.0-9][0-9][.-]?unused-addr/i 3
/[-.0-9][0-9][.-]?pppoe/i 5
/[-.0-9][0-9][.-]?dynamic/i 5
/[.-]catv[.-]/i 5
/unused-addr[.-][0-9]/i 3
/comcast[.-][0-9]/i 5
/[.-]broadband[.-]/i 5
/[0-9][.-]?fbx/i 4
/[.-]peer[.-]/i 1
/[.-]homeuser[.-]/i 5
/[-.0-9][0-9][.-]?catv/i 5
/customers?[.-][0-9]/i 1
/[.-]wifi[.-]/i 5
/[0-9][.-]?kabel/i 3
/dynip[.-][0-9]/i 5
/[.-]broad[.-]/i 5
/[a|x]?dsl-line[.-]?[0-9]/i 4
/[-.0-9][0-9][.-]?ppp/i 5
/pool[.-][0-9]/i 4
/[.-]nat[.-]/i 5
/gprs[.-][0-9]/i 5
/brodband[.-][0-9]/i 5
/[.-]gprs[.-]/i 5
/[.-]user[.-]/i 1
/[-.0-9][0-9][.-]?in-?addr/i 4
/[.-]host[.-]/i 2
/[.-]fbx[.-]/i 4
/dynamic[.-][0-9]/i 5
/[-.0-9][0-9][.-]?peer/i 1
/[-.0-9][0-9][.-]?pool/i 4
/[-.0-9][0-9][.-]?user/i 1
/[.-]cdma[.-]/i 5
/user[.-][0-9]/i 1
/[-.0-9][0-9][.-]?customers?/i 1
/ppp[.-][0-9]/i 5
/kabel[.-][0-9]/i 3
/dhcp[.-][0-9]/i 5
/peer[.-][0-9]/i 1
/[-.0-9][0-9][.-]?host/i 2
/clients?[.-][0-9]{2,}/i 5
/host[.-][0-9]/i 2
/[.-]ppp[.-]/i 5
/[.-]dhcp[.-]/i 5
/[.-]comcast[.-]/i 5
/cable[.-][0-9]/i 3
/[-.0-9][0-9][.-]?dial-?up/i 5
/[-.0-9][0-9][.-]?bredband/i 5
/[-.0-9][0-9][.-]?[a|x]?dsl-line/i 4
/[.-]dial-?up[.-]/i 5
/[.-]cablemodem[.-]/i 5
/pppoe[.-][0-9]/i 5
/[.-]unused-addr[.-]/i 3
/pptp[.-][0-9]/i 5
/broadband[.-][0-9]/i 5
/[.-][a|x]?dsl-line[.-]/i 4
/[.-]customers?[.-]/i 1
/[-.0-9][0-9][.-]?fibertel/i 4
/[-.0-9][0-9][.-]?comcast/i 5
/[.-]dynamic[.-]/i 5
/cdma[.-][0-9]/i 5
/[0-9][.-]?broad/i 5
/fbx[.-][0-9]/i 4
/catv[.-][0-9]/i 5
/[-.0-9][0-9][.-]?homeuser/i 5
/[-.0-9][.-]pppoe[.-]/i 5
/[-.0-9][.-]dynip[.-]/i 5
/[-.0-9][0-9][.-]?[a|x]?dsl/i 4
/[-.0-9][0-9]{3,}[.-]?clients?/i 5
/[-.0-9][0-9][.-]?pptp/i 5
/[.-]clients?[.-]/i 1
/[.-]in-?addr[.-]/i 4
/[.-]pool[.-]/i 4
/[a|x]?dsl[.-]?[0-9]/i 4
/[.-][a|x]?dsl[.-]/i 4
/[-.0-9][0-9][.-]?[a|x]?dsl-dynamic/i 5
/dial-?up[.-][0-9]/i 5
/[-.0-9][0-9][.-]?cablemodem/i 5
/[a|x]?dsl-dynamic[.-]?[0-9]/i 5
/[.-]pptp[.-]/i 5
/[.-][a|x]?dsl-dynamic[.-]/i 5
/[0-9][.-]?wifi/i 5
/fibertel[.-][0-9]/i 4
/dyn[.-][0-9][-.0-9]/i 5
/[-.0-9][0-9][.-]broadband/i 5
/[-.0-9][0-9][.-]cable/i 3
/broad[.-][0-9]/i 5
/[-.0-9][0-9][.-]gprs/i 5
/cablemodem[.-][0-9]/i 5
/[-.0-9][0-9][.-]modem/i 5
/[-.0-9][0-9][.-]dyn/i 5
/[-.0-9][0-9][.-]dynip/i 5
/[-.0-9][0-9][.-]cdma/i 5
/[.-]modem[.-]/i 5
/[.-]kabel[.-]/i 3
/[.-]cable[.-]/i 3
/in-?addr[.-][0-9]/i 4
/nat[.-][0-9]/i 5
/[.-]fibertel[.-]/i 4
/[.-]bredband[.-]/i 5
/modem[.-][0-9]/i 5
/[0-9][.-]?dhcp/i 5
/wifi[.-][0-9]/i 5
]]
local checks_hellohost_map
local checks_hello = [[
/^[^\.]+$/i 5 # for helo=COMPUTER, ANNA, etc... Without dot in helo
/^(dsl)?(device|speedtouch)\.lan$/i 5
/\.(lan|local|home|localdomain|intra|in-addr.arpa|priv|user|veloxzon)$ 5
]]
local checks_hello_map
local checks_hello_badip = [[
/^\d\.\d\.\d\.255$/i 1
/^192\.0\.0\./i 1
/^2001:db8::/i 1
/^10\./i 1
/^192\.0\.2\./i 1
/^172\.1[6-9]\./i 1
/^192\.168\./i 1
/^::1$/i 1 # loopback ipv4, ipv6
/^ffxx::/i 1
/^fc00::/i 1
/^203\.0\.113\./i 1
/^fe[cdf][0-9a-f]:/i 1
/^100.12[0-7]\d\./i 1
/^fe[89ab][0-9a-f]::/i 1
/^169\.254\./i 1
/^0\./i 1
/^198\.51\.100\./i 1
/^172\.3[01]\./i 1
/^100.[7-9]\d\./i 1
/^100.1[01]\d\./i 1
/^127\./i 1
/^100.6[4-9]\./i 1
/^192\.88\.99\./i 1
/^172\.2[0-9]\./i 1
]]
local checks_hello_badip_map
local checks_hello_bareip = [[
/^\d+[x.-]\d+[x.-]\d+[x.-]\d+$/
/^[0-9a-f]+:/
]]
local checks_hello_bareip_map
local config = {
['helo_enabled'] = false,
['hostname_enabled'] = false,
['from_enabled'] = false,
['rcpt_enabled'] = false,
['mid_enabled'] = false,
['url_enabled'] = false
}
local compiled_regexp = {} -- cache of regexps
local check_local = false
local check_authed = false
local N = "hfilter"
local function check_regexp(str, regexp_text)
local re = compiled_regexp[regexp_text]
if not re then
re = rspamd_regexp.create(regexp_text, 'i')
compiled_regexp[regexp_text] = re
end
return re:match(str)
end
local function add_static_map(data)
return rspamd_config:add_map{
type = 'regexp_multi',
url = {
upstreams = 'static',
data = data,
}
}
end
local function check_fqdn(domain)
if check_regexp(domain,
'(?=^.{4,253}$)(^((?!-)[a-zA-Z0-9-]{1,63}(?<!-)\\.)+[a-zA-Z0-9-]{2,63}\\.?$)') then
return true
end
return false
end
-- host: host for check
-- symbol_suffix: suffix for symbol
-- eq_ip: ip for comparing or empty string
-- eq_host: host for comparing or empty string
local function check_host(task, host, symbol_suffix, eq_ip, eq_host)
local failed_address = 0
local resolved_address = {}
local function check_host_cb_mx(_, to_resolve, results, err)
if err and (err ~= 'requested record is not found' and err ~= 'no records with this name') then
lua_util.debugm(N, task, 'error looking up %s: %s', to_resolve, err)
end
if not results then
task:insert_result('HFILTER_' .. symbol_suffix .. '_NORES_A_OR_MX', 1.0,
to_resolve)
else
for _,mx in pairs(results) do
if mx['name'] then
local failed_mx_address = 0
-- Capture failed_mx_address
local function check_host_cb_mx_a(_, _, mx_results)
if not mx_results then
failed_mx_address = failed_mx_address + 1
end
if failed_mx_address >= 2 then
task:insert_result('HFILTER_' .. symbol_suffix .. '_NORESOLVE_MX',
1.0, mx['name'])
end
end
task:get_resolver():resolve('a', {
task=task,
name = mx['name'],
callback = check_host_cb_mx_a
})
task:get_resolver():resolve('aaaa', {
task = task,
name = mx['name'],
callback = check_host_cb_mx_a
})
end
end
end
end
local function check_host_cb_a(_, _, results)
if not results then
failed_address = failed_address + 1
else
for _,result in pairs(results) do
table.insert(resolved_address, result:to_string())
end
end
if failed_address >= 2 then
-- No A or AAAA records
if eq_ip and eq_ip ~= '' then
for _,result in pairs(resolved_address) do
if result == eq_ip then
return true
end
end
task:insert_result('HFILTER_' .. symbol_suffix .. '_IP_A', 1.0, host)
end
task:get_resolver():resolve_mx({
task = task,
name = host,
callback = check_host_cb_mx
})
end
end
if host then
host = string.lower(host)
else
return false
end
if eq_host then
eq_host = string.lower(eq_host)
else
eq_host = ''
end
if check_fqdn(host) then
if eq_host == '' or eq_host ~= host then
task:get_resolver():resolve('a', {
task=task,
name = host,
callback = check_host_cb_a
})
-- Check ipv6 as well
task:get_resolver():resolve('aaaa', {
task = task,
name = host,
callback = check_host_cb_a
})
end
else
task:insert_result('HFILTER_' .. symbol_suffix .. '_NOT_FQDN', 1.0, host)
end
return true
end
--
local function hfilter_callback(task)
-- Links checks
if config['url_enabled'] then
local parts = task:get_text_parts()
if parts then
local plain_text_part = nil
local html_text_part = nil
for _,p in ipairs(parts) do
if p:is_html() then
html_text_part = p
else
plain_text_part = p
end
end
local hc = nil
if html_text_part then
hc = html_text_part:get_html()
if hc then
local url_len = 0
hc:foreach_tag('a', function(_, len)
url_len = url_len + len
return false
end)
local plen = html_text_part:get_length()
if url_len > 0 and plen > 0 then
local rel = url_len / plen
if rel > 0.8 then
local sc = (rel - 0.8) * 5.0
if sc > 1.0 then sc = 1.0 end
task:insert_result('HFILTER_URL_ONLY', sc, tostring(sc))
local lines = html_text_part:get_lines_count()
if lines > 0 and lines < 2 then
task:insert_result('HFILTER_URL_ONELINE', 1.00,
string.format('html:%d:%d', sc, lines))
end
end
end
end
end
if not hc and plain_text_part then
local url_len = plain_text_part:get_urls_length()
local plen = plain_text_part:get_length()
if plen > 0 and url_len > 0 then
local rel = url_len / plen
if rel > 0.8 then
local sc = (rel - 0.8) * 5.0
if sc > 1.0 then sc = 1.0 end
task:insert_result('HFILTER_URL_ONLY', sc, tostring(sc))
local lines = plain_text_part:get_lines_count()
if lines > 0 and lines < 2 then
task:insert_result('HFILTER_URL_ONELINE', 1.00,
string.format('plain:%d:%d', rel, lines))
end
end
end
end
end
end
--No more checks for auth user or local network
local rip = task:get_from_ip()
if ((not check_authed and task:get_user()) or
(not check_local and rip and rip:is_local())) then
return false
end
--local message = task:get_message()
local ip = false
if rip and rip:is_valid() then
ip = rip:to_string()
end
-- Check's HELO
local weight_helo = 0
local helo
if config['helo_enabled'] then
helo = task:get_helo()
if helo then
if helo ~= rspamc_local_helo then
helo = string.gsub(helo, '[%[%]]', '')
-- Regexp check HELO (checks_hello_badip)
local find_badip = false
local values = checks_hello_badip_map:get_key(helo)
if values then
task:insert_result('HFILTER_HELO_BADIP', 1.0, helo, values)
find_badip = true
end
-- Regexp check HELO (checks_hello_bareip)
local find_bareip = false
if not find_badip then
values = checks_hello_bareip_map:get_key(helo)
if values then
task:insert_result('HFILTER_HELO_BAREIP', 1.0, helo, values)
find_bareip = true
end
end
if not find_badip and not find_bareip then
-- Regexp check HELO (checks_hello)
local weights = checks_hello_map:get_key(helo)
for _,weight in ipairs(weights or {}) do
weight = tonumber(weight) or 0
if weight > weight_helo then
weight_helo = weight
end
end
-- Regexp check HELO (checks_hellohost)
weights = checks_hellohost_map:get_key(helo)
for _,weight in ipairs(weights or {}) do
weight = tonumber(weight) or 0
if weight > weight_helo then
weight_helo = weight
end
end
--FQDN check HELO
if ip and helo and weight_helo == 0 then
check_host(task, helo, 'HELO', ip)
end
end
end
end
end
-- Check's HOSTNAME
local weight_hostname = 0
local hostname = task:get_hostname()
if config['hostname_enabled'] then
if hostname then
-- Check regexp HOSTNAME
local weights = checks_hellohost_map:get_key(hostname)
for _,weight in ipairs(weights or {}) do
weight = tonumber(weight) or 0
if weight > weight_hostname then
weight_hostname = weight
end
end
else
task:insert_result('HFILTER_HOSTNAME_UNKNOWN', 1.00)
end
end
--Insert weight's for HELO or HOSTNAME
if weight_helo > 0 and weight_helo >= weight_hostname then
task:insert_result('HFILTER_HELO_' .. weight_helo, 1.0, helo)
elseif weight_hostname > 0 and weight_hostname > weight_helo then
task:insert_result('HFILTER_HOSTNAME_' .. weight_hostname, 1.0, hostname)
end
-- MAILFROM checks --
local frombounce = false
if config['from_enabled'] then
local from = task:get_from(1)
if from then
--FROM host check
for _,fr in ipairs(from) do
local fr_split = rspamd_str_split(fr['addr'], '@')
if #fr_split == 2 then
check_host(task, fr_split[2], 'FROMHOST', '', '')
if fr_split[1] == 'postmaster' then
frombounce = true
end
end
end
else
if helo and helo ~= rspamc_local_helo then
task:insert_result('HFILTER_FROM_BOUNCE', 1.00, helo)
frombounce = true
end
end
end
-- Recipients checks --
if config['rcpt_enabled'] then
local rcpt = task:get_recipients()
if rcpt then
local count_rcpt = #rcpt
if frombounce then
if count_rcpt > 1 then
task:insert_result('HFILTER_RCPT_BOUNCEMOREONE', 1.00,
tostring(count_rcpt))
end
end
end
end
--Message ID host check
if config['mid_enabled'] then
local message_id = task:get_message_id()
if message_id then
local mid_split = rspamd_str_split(message_id, '@')
if #mid_split == 2 and not string.find(mid_split[2], 'local') then
check_host(task, mid_split[2], 'MID')
end
end
end
return false
end
local symbols_enabled = {}
local symbols_helo = {
"HFILTER_HELO_BAREIP",
"HFILTER_HELO_BADIP",
"HFILTER_HELO_1",
"HFILTER_HELO_2",
"HFILTER_HELO_3",
"HFILTER_HELO_4",
"HFILTER_HELO_5",
"HFILTER_HELO_NORESOLVE_MX",
"HFILTER_HELO_NORES_A_OR_MX",
"HFILTER_HELO_IP_A",
"HFILTER_HELO_NOT_FQDN"
}
local symbols_hostname = {
"HFILTER_HOSTNAME_1",
"HFILTER_HOSTNAME_2",
"HFILTER_HOSTNAME_3",
"HFILTER_HOSTNAME_4",
"HFILTER_HOSTNAME_5",
"HFILTER_HOSTNAME_UNKNOWN"
}
local symbols_rcpt = {
"HFILTER_RCPT_BOUNCEMOREONE"
}
local symbols_mid = {
"HFILTER_MID_NORESOLVE_MX",
"HFILTER_MID_NORES_A_OR_MX",
"HFILTER_MID_NOT_FQDN"
}
local symbols_url = {
"HFILTER_URL_ONLY",
"HFILTER_URL_ONELINE"
}
local symbols_from = {
"HFILTER_FROMHOST_NORESOLVE_MX",
"HFILTER_FROMHOST_NORES_A_OR_MX",
"HFILTER_FROMHOST_NOT_FQDN",
"HFILTER_FROM_BOUNCE"
}
local auth_and_local_conf = lua_util.config_check_local_or_authed(rspamd_config, N,
false, false)
check_local = auth_and_local_conf[1]
check_authed = auth_and_local_conf[2]
local opts = rspamd_config:get_all_opt('hfilter')
if opts then
for k,v in pairs(opts) do
config[k] = v
end
end
local function append_t(t, a)
for _,v in ipairs(a) do table.insert(t, v) end
end
if config['helo_enabled'] then
checks_hello_bareip_map = add_static_map(checks_hello_bareip)
checks_hello_badip_map = add_static_map(checks_hello_badip)
checks_hellohost_map = add_static_map(checks_hellohost)
checks_hello_map = add_static_map(checks_hello)
append_t(symbols_enabled, symbols_helo)
end
if config['hostname_enabled'] then
if not checks_hellohost_map then
checks_hellohost_map = add_static_map(checks_hellohost)
end
append_t(symbols_enabled, symbols_hostname)
end
if config['from_enabled'] then
append_t(symbols_enabled, symbols_from)
end
if config['rcpt_enabled'] then
append_t(symbols_enabled, symbols_rcpt)
end
if config['mid_enabled'] then
append_t(symbols_enabled, symbols_mid)
end
if config['url_enabled'] then
append_t(symbols_enabled, symbols_url)
end
--dumper(symbols_enabled)
if #symbols_enabled > 0 then
local id = rspamd_config:register_symbol{
name = 'HFILTER',
callback = hfilter_callback,
type = 'callback,mime',
score = 0.0,
}
rspamd_config:set_metric_symbol({
name = 'HFILTER',
score = 0.0,
group = 'hfilter'
})
for _,sym in ipairs(symbols_enabled) do
rspamd_config:register_symbol{
type = 'virtual,mime',
score = 1.0,
parent = id,
name = sym,
}
rspamd_config:set_metric_symbol({
name = sym,
score = 0.0,
group = 'hfilter'
})
end
else
lua_util.disable_module(N, "config")
end
File Manager Version 1.0, Coded By Lucas
Email: hehe@yahoo.com