1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
--[[
Copyright (c) 2016, Andrew Lewis <nerf@judo.za.org>
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 global = require "global_functions"
local default_settings = {
spf_symbols = {
pass = 'R_SPF_ALLOW',
fail = 'R_SPF_FAIL',
softfail = 'R_SPF_SOFTFAIL',
neutral = 'R_SPF_NEUTRAL',
temperror = 'R_SPF_DNSFAIL',
none = 'R_SPF_NA',
permerror = 'R_SPF_PERMFAIL',
},
dkim_symbols = {
pass = 'R_DKIM_ALLOW',
fail = 'R_DKIM_REJECT',
temperror = 'R_DKIM_TEMPFAIL',
none = 'R_DKIM_NA',
permerror = 'R_DKIM_PERMFAIL',
},
dmarc_symbols = {
pass = 'DMARC_POLICY_ALLOW',
permerror = 'DMARC_BAD_POLICY',
temperror = 'DMARC_DNSFAIL',
none = 'DMARC_NA',
reject = 'DMARC_POLICY_REJECT',
softfail = 'DMARC_POLICY_SOFTFAIL',
quarantine = 'DMARC_POLICY_QUARANTINE',
},
}
local exports = {}
local function gen_auth_results(task, settings)
local table = table
local pairs = pairs
local ipairs = ipairs
local auth_results, hdr_parts = {}, {}
if not settings then
settings = default_settings
end
local auth_types = {
dkim = settings.dkim_symbols,
dmarc = settings.dmarc_symbols,
spf = settings.spf_symbols,
}
local common = {
symbols = {}
}
for auth_type, symbols in pairs(auth_types) do
for key, sym in pairs(symbols) do
if not common.symbols.sym then
local s = task:get_symbol(sym)
if not s then
common.symbols[sym] = false
else
common.symbols[sym] = s
if not auth_results[auth_type] then
auth_results[auth_type] = {key}
else
table.insert(auth_results[auth_type], key)
end
if auth_type ~= 'dkim' then
break
end
end
end
end
end
for auth_type, keys in pairs(auth_results) do
for _, key in ipairs(keys) do
local hdr = ''
if auth_type == 'dmarc' and key ~= 'none' then
hdr = hdr .. 'dmarc='
if key == 'reject' or key == 'quarantine' or key == 'softfail' then
hdr = hdr .. 'fail'
else
hdr = hdr .. key
end
if key == 'pass' then
hdr = hdr .. ' policy=' .. common.symbols[auth_types['dmarc'][key]][1]['options'][2]
hdr = hdr .. ' header.from=' .. common.symbols[auth_types['dmarc'][key]][1]['options'][1]
elseif key ~= 'none' then
local t = global.rspamd_str_split(common.symbols[auth_types['dmarc'][key]][1]['options'][1], ' : ')
local dom = t[1]
local rsn = t[2]
if rsn then
hdr = hdr .. ' reason="' .. rsn .. '"'
end
hdr = hdr .. ' header.from=' .. dom
if key == 'softfail' then
hdr = hdr .. ' policy=none'
else
hdr = hdr .. ' policy=' .. key
end
end
table.insert(hdr_parts, hdr)
elseif auth_type == 'dkim' and key ~= 'none' then
if common.symbols[auth_types['dkim'][key]][1] then
for _, v in ipairs(common.symbols[auth_types['dkim'][key]][1]['options']) do
hdr = hdr .. auth_type .. '=' .. key .. ' header.d=' .. v
table.insert(hdr_parts, hdr)
end
end
elseif auth_type == 'spf' and key ~= 'none' then
hdr = hdr .. auth_type .. '=' .. key
local smtp_from = task:get_from('smtp')
if smtp_from['addr'] ~= '' and smtp_from['addr'] ~= nil then
hdr = hdr .. ' smtp.mailfrom=' .. smtp_from['addr']
else
local helo = task:get_helo()
if helo then
hdr = hdr .. ' smtp.helo=' .. task:get_helo()
end
end
table.insert(hdr_parts, hdr)
end
end
end
if #hdr_parts > 0 then
return table.concat(hdr_parts, '; ')
end
return nil
end
exports.gen_auth_results = gen_auth_results
return exports
|
