mirror of
https://github.com/rspamd/rspamd.git
synced 2024-08-27 17:55:15 +02:00
70 lines
1.9 KiB
Lua
70 lines
1.9 KiB
Lua
--[[
|
|
Copyright (c) 2017, Vsevolod Stakhov <vsevolod@highsecure.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.
|
|
]]--
|
|
|
|
local rspamd_regexp = require "rspamd_regexp"
|
|
local util = require "rspamd_util"
|
|
|
|
-- Uncategorized rules
|
|
local subject_re = rspamd_regexp.create('/^(?:(?:Re|Fwd|Fw|Aw|Antwort|Sv):\\s*)+(.+)$/i')
|
|
|
|
local function test_subject(task, check_function, rate)
|
|
local function normalize_linear(a, x)
|
|
local f = a * x
|
|
return true, (( f < 1 ) and f or 1), tostring(x)
|
|
end
|
|
|
|
local sbj = task:get_header('Subject')
|
|
|
|
if sbj then
|
|
local stripped_subject = subject_re:search(sbj, false, true)
|
|
if stripped_subject and stripped_subject[1] and stripped_subject[1][2] then
|
|
sbj = stripped_subject[1][2]
|
|
end
|
|
|
|
local l = util.strlen_utf8(sbj)
|
|
if check_function(sbj, l) then
|
|
return normalize_linear(rate, l)
|
|
end
|
|
end
|
|
|
|
return false
|
|
end
|
|
|
|
rspamd_config.SUBJ_ALL_CAPS = {
|
|
callback = function(task)
|
|
local caps_test = function(sbj)
|
|
return util.is_uppercase(sbj)
|
|
end
|
|
return test_subject(task, caps_test, 1.0/40.0)
|
|
end,
|
|
score = 3.0,
|
|
group = 'subject',
|
|
type = 'mime',
|
|
description = 'All capital letters in subject'
|
|
}
|
|
|
|
rspamd_config.LONG_SUBJ = {
|
|
callback = function(task)
|
|
local length_test = function(_, len)
|
|
return len > 200
|
|
end
|
|
return test_subject(task, length_test, 1.0/400.0)
|
|
end,
|
|
score = 3.0,
|
|
group = 'subject',
|
|
type = 'mime',
|
|
description = 'Subject is too long'
|
|
} |