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- --[[
- Copyright (c) 2011-2015, Vsevolod Stakhov <vsevolod@highsecure.ru>
- All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions are met:
-
- 1. Redistributions of source code must retain the above copyright notice, this
- list of conditions and the following disclaimer.
-
- 2. Redistributions in binary form must reproduce the above copyright notice,
- this list of conditions and the following disclaimer in the documentation
- and/or other materials provided with the distribution.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- ]]--
-
- -- This is main lua config file for rspamd
-
- local util = require "rspamd_util"
-
- local reconf = config['regexp']
-
-
- -- Uncategorized rules
-
- -- Local rules
- local r_bgcolor = '/BGCOLOR=/iP'
- local r_font_color = '/font color=[\\"\']?\\#FFFFFF[\\"\']?/iP'
- reconf['R_WHITE_ON_WHITE'] = string.format('(!(%s) & (%s))', r_bgcolor, r_font_color)
- reconf['R_FLASH_REDIR_IMGSHACK'] = '/^(?:http:\\/\\/)?img\\d{1,5}\\.imageshack\\.us\\/\\S+\\.swf/U'
-
- -- Different text parts
- rspamd_config.R_PARTS_DIFFER = function(task)
- local distance = task:get_mempool():get_variable('parts_distance', 'int')
-
- if distance then
- local nd = tonumber(distance)
-
- if nd < 50 then
- local score = 1 - util.tanh(nd / 100.0)
-
- task:insert_result('R_PARTS_DIFFER', score, tostring(nd) .. '%')
- end
- end
-
- return false
- end
-
- -- Date issues
- rspamd_config.MISSING_DATE = function(task)
- if rspamd_config:get_api_version() >= 5 then
- if not task:get_header_raw('Date') then
- return true
- end
- end
-
- return false
- end
- rspamd_config.DATE_IN_FUTURE = function(task)
- if rspamd_config:get_api_version() >= 5 then
- local dm = task:get_date{format = 'message'}
- local dt = task:get_date{format = 'connect'}
- -- An 2 hour
- if dm > 0 and dm - dt > 7200 then
- return true
- end
- end
-
- return false
- end
- rspamd_config.DATE_IN_PAST = function(task)
- if rspamd_config:get_api_version() >= 5 then
- local dm = task:get_date{format = 'message', gmt = true}
- local dt = task:get_date{format = 'connect', gmt = true}
- -- A day
- if dm > 0 and dt - dm > 86400 then
- return true
- end
- end
-
- return false
- end
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