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--[[
Copyright (c) 2019, 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 argparse = require "argparse"
local rspamd_logger = require "rspamd_logger"
local lua_util = require "lua_util"
local ansicolors = require "ansicolors"
local parser = argparse()
:name "rspamadm dns_tool"
:description "DNS tools provided by Rspamd"
:help_description_margin(30)
:command_target("command")
:require_command(true)
parser:option "-c --config"
:description "Path to config file"
:argname("<cfg>")
:default(rspamd_paths["CONFDIR"] .. "/" .. "rspamd.conf")
local spf = parser:command "spf"
:description "Extracts spf records"
parser:mutex(
spf:option "-d --domain"
:description "Domain to use"
:argname("<domain>"),
spf:option "-f --from"
:description "SMTP from to use"
:argname("<from>")
)
spf:option "-i --ip"
:description "Source IP address to use"
:argname("<ip>")
spf:flag "-a --all"
:description "Print all records"
local function printf(fmt, ...)
if fmt then
io.write(string.format(fmt, ...))
end
io.write('\n')
end
local function highlight(str)
return ansicolors.white .. str .. ansicolors.reset
end
local function green(str)
return ansicolors.green .. str .. ansicolors.reset
end
local function red(str)
return ansicolors.red .. str .. ansicolors.reset
end
local function load_config(opts)
local _r,err = rspamd_config:load_ucl(opts['config'])
if not _r then
rspamd_logger.errx('cannot parse %s: %s', opts['config'], err)
os.exit(1)
end
_r,err = rspamd_config:parse_rcl({'logging', 'worker'})
if not _r then
rspamd_logger.errx('cannot process %s: %s', opts['config'], err)
os.exit(1)
end
end
local function spf_handler(opts)
local lua_spf = require("lua_ffi").spf
local rspamd_task = require "rspamd_task"
local task = rspamd_task:create(rspamd_config, rspamadm_ev_base)
task:set_session(rspamadm_session)
task:set_resolver(rspamadm_dns_resolver)
if opts.ip then
task:set_from_ip(opts.ip)
end
if opts.from then
task:set_from('smtp', {addr = opts.from})
elseif opts.domain then
task:set_from('smtp', {user = 'user', domain = opts.domain})
else
io.stderr:write('Neither domain nor from specified\n')
os.exit(1)
end
local function display_spf_results(elt, colored)
local dec = function(e) return e end
if colored then
dec = function(e) return highlight(e) end
if elt.res == 'pass' then
dec = function(e) return green(e) end
elseif elt.res == 'fail' then
dec = function(e) return red(e) end
end
end
printf('%s: %s', highlight('Result'), dec(elt.res))
printf('%s: %s', highlight('Network'), dec(elt.ipnet))
if elt.spf_str then
printf('%s: %s', highlight('Original'), elt.spf_str)
end
end
local function cb(success, res, matched)
if success then
if opts.ip and not opts.all then
if matched then
display_spf_results(matched, true)
else
printf('Not matched')
end
os.exit(0)
end
printf('SPF record for %s; digest: %s',
highlight(opts.domain or opts.from), highlight(res.digest))
for _,elt in ipairs(res.addrs) do
if lua_util.table_cmp(elt, matched) then
printf("%s", highlight('*** Matched ***'))
display_spf_results(elt, true)
printf('------')
else
display_spf_results(elt, false)
printf('------')
end
end
else
printf('Cannot get SPF record: %s', res)
end
end
lua_spf.spf_resolve(task, cb)
end
local function handler(args)
local opts = parser:parse(args)
load_config(opts)
local command = opts.command
if command == 'spf' then
spf_handler(opts)
else
parser:error('command %s is not implemented', command)
end
end
return {
name = 'dns_tool',
aliases = {'dns', 'dns_tool'},
handler = handler,
description = parser._description
}
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