mailcow/data/conf/rspamd/lua/rspamd.local.lua

96 lines
3.0 KiB
Lua

rspamd_config.MAILCOW_AUTH = {
callback = function(task)
local uname = task:get_user()
if uname then
return 1
end
end
}
rspamd_config.MAILCOW_MOO = function (task)
return true
end
modify_subject_map = rspamd_config:add_map({
url = 'http://172.22.1.251:8081/tags.php',
type = 'map',
description = 'Map of users to use subject tags for'
})
auth_domain_map = rspamd_config:add_map({
url = 'http://172.22.1.251:8081/authoritative.php',
type = 'map',
description = 'Map of domains we are authoritative for'
})
rspamd_config.ADD_DELIMITER_TAG = {
callback = function(task)
local tag = nil
local util = require("rspamd_util")
local rspamd_logger = require "rspamd_logger"
local user_tagged = task:get_recipients(2)[1]['user']
local domain = task:get_recipients(1)[1]['domain']
local user, tag = user_tagged:match("([^+]+)+(.*)")
local authdomain = auth_domain_map:get_key(domain)
if tag and authdomain then
rspamd_logger.infox("domain: %1, tag: %2", domain, tag)
local user_untagged = user .. '@' .. domain
rspamd_logger.infox("querying tag settings for user %1", user_untagged)
if modify_subject_map:get_key(user_untagged) then
rspamd_logger.infox("found user in map for subject rewrite")
local sbj = task:get_header('Subject')
new_sbj = '=?UTF-8?B?' .. tostring(util.encode_base64('[' .. tag .. '] ' .. sbj)) .. '?='
task:set_rmilter_reply({
remove_headers = {['Subject'] = 1},
add_headers = {['Subject'] = new_sbj}
})
else
rspamd_logger.infox("add X-Moo-Tag header")
task:set_rmilter_reply({
add_headers = {['X-Moo-Tag'] = 'YES'}
})
end
else
rspamd_logger.infox("skip delimiter handling for untagged message or authenticated user")
end
return false
end
}
rspamd_config.MRAPTOR = {
callback = function(task)
local parts = task:get_parts()
local rspamd_logger = require "rspamd_logger"
local rspamd_regexp = require "rspamd_regexp"
if parts then
for _,p in ipairs(parts) do
local mtype,subtype = p:get_type()
local re = rspamd_regexp.create_cached('/(office|word|excel)/i')
if re:match(subtype) then
local content = tostring(p:get_content())
local filename = p:get_filename()
local file = os.tmpname()
f = io.open(file, "a+")
f:write(content)
f:close()
local scan = assert(io.popen('PATH=/usr/bin:/usr/local/bin mraptor ' .. file .. '> /dev/null 2>&1; echo $?', 'r'))
local result = scan:read('*all')
local exit_code = string.match(result, "%d+")
rspamd_logger.infox(exit_code)
scan:close()
if exit_code == "20" then
rspamd_logger.infox("Reject dangerous macro in office file " .. filename)
task:set_pre_result(rspamd_actions['reject'], 'Dangerous macro in office file ' .. filename)
end
end
end
end
end
}