Mercurial > prosody-modules

annotate mod_register_dnsbl/mod_register_dnsbl.lua @ 5792:14e17927c0ec

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
mod_firewall: Fix TO/FROM ROLE These conditions did not match because get_jid_role() returns a role object. We want to compare based on the name.
author Matthew Wild <mwild1@gmail.com>
date Mon, 11 Dec 2023 19:09:25 +0000
parents 82482e7e92cb
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2112
0890c4860f14 mod_register_dnsbl: Initial commit of module to check users registering against an DNS block list
Kim Alvefur <zash@zash.se>
parents:
diff changeset
1 local adns = require "net.adns";
2890
6412595e2046 mod_register_dnsbl: Use async support in trunk to actually block registration if a positive match is found in the DNSBL
Kim Alvefur <zash@zash.se>
parents: 2203
diff changeset
2 local async = require "util.async";
2891
84670bac7348 mod_register_dnsbl: Use util.net for IP address parsing
Kim Alvefur <zash@zash.se>
parents: 2890
diff changeset
3 local inet_pton = require "util.net".pton;
2892
bf9fc41bf7ad mod_register_dnsbl: Add support for IPv6 DNSBL
Kim Alvefur <zash@zash.se>
parents: 2891
diff changeset
4 local to_hex = require "util.hex".to;
2890
6412595e2046 mod_register_dnsbl: Use async support in trunk to actually block registration if a positive match is found in the DNSBL
Kim Alvefur <zash@zash.se>
parents: 2203
diff changeset
5
2112
0890c4860f14 mod_register_dnsbl: Initial commit of module to check users registering against an DNS block list
Kim Alvefur <zash@zash.se>
parents:
diff changeset
6 local rbl = module:get_option_string("registration_rbl");
0890c4860f14 mod_register_dnsbl: Initial commit of module to check users registering against an DNS block list
Kim Alvefur <zash@zash.se>
parents:
diff changeset
7
0890c4860f14 mod_register_dnsbl: Initial commit of module to check users registering against an DNS block list
Kim Alvefur <zash@zash.se>
parents:
diff changeset
8 local function reverse(ip, suffix)
2891
84670bac7348 mod_register_dnsbl: Use util.net for IP address parsing
Kim Alvefur <zash@zash.se>
parents: 2890
diff changeset
9 local n, err = inet_pton(ip);
84670bac7348 mod_register_dnsbl: Use util.net for IP address parsing
Kim Alvefur <zash@zash.se>
parents: 2890
diff changeset
10 if not n then return n, err end
84670bac7348 mod_register_dnsbl: Use util.net for IP address parsing
Kim Alvefur <zash@zash.se>
parents: 2890
diff changeset
11 if #n == 4 then
84670bac7348 mod_register_dnsbl: Use util.net for IP address parsing
Kim Alvefur <zash@zash.se>
parents: 2890
diff changeset
12 local a,b,c,d = n:byte(1,4);
84670bac7348 mod_register_dnsbl: Use util.net for IP address parsing
Kim Alvefur <zash@zash.se>
parents: 2890
diff changeset
13 return ("%d.%d.%d.%d.%s"):format(d,c,b,a, suffix);
2892
bf9fc41bf7ad mod_register_dnsbl: Add support for IPv6 DNSBL
Kim Alvefur <zash@zash.se>
parents: 2891
diff changeset
14 elseif #n == 16 then
bf9fc41bf7ad mod_register_dnsbl: Add support for IPv6 DNSBL
Kim Alvefur <zash@zash.se>
parents: 2891
diff changeset
15 return to_hex(n):reverse():gsub("%x", "%1.") .. suffix;
2891
84670bac7348 mod_register_dnsbl: Use util.net for IP address parsing
Kim Alvefur <zash@zash.se>
parents: 2890
diff changeset
16 end
2112
0890c4860f14 mod_register_dnsbl: Initial commit of module to check users registering against an DNS block list
Kim Alvefur <zash@zash.se>
parents:
diff changeset
17 end
0890c4860f14 mod_register_dnsbl: Initial commit of module to check users registering against an DNS block list
Kim Alvefur <zash@zash.se>
parents:
diff changeset
18
2890
6412595e2046 mod_register_dnsbl: Use async support in trunk to actually block registration if a positive match is found in the DNSBL
Kim Alvefur <zash@zash.se>
parents: 2203
diff changeset
19 module:hook("user-registering", function (event)
6412595e2046 mod_register_dnsbl: Use async support in trunk to actually block registration if a positive match is found in the DNSBL
Kim Alvefur <zash@zash.se>
parents: 2203
diff changeset
20 local session, ip = event.session, event.ip;
4118
82482e7e92cb mod_register_dnsbl: Handle missing session in user-registering event (thanks meaz)
Matthew Wild <mwild1@gmail.com>
parents: 2892
diff changeset
21 local log = (session and session.log) or module._log;
2890
6412595e2046 mod_register_dnsbl: Use async support in trunk to actually block registration if a positive match is found in the DNSBL
Kim Alvefur <zash@zash.se>
parents: 2203
diff changeset
22 if not ip then
4118
82482e7e92cb mod_register_dnsbl: Handle missing session in user-registering event (thanks meaz)
Matthew Wild <mwild1@gmail.com>
parents: 2892
diff changeset
23 log("debug", "Unable to check DNSBL when IP is unknown");
2890
6412595e2046 mod_register_dnsbl: Use async support in trunk to actually block registration if a positive match is found in the DNSBL
Kim Alvefur <zash@zash.se>
parents: 2203
diff changeset
24 return;
6412595e2046 mod_register_dnsbl: Use async support in trunk to actually block registration if a positive match is found in the DNSBL
Kim Alvefur <zash@zash.se>
parents: 2203
diff changeset
25 end
6412595e2046 mod_register_dnsbl: Use async support in trunk to actually block registration if a positive match is found in the DNSBL
Kim Alvefur <zash@zash.se>
parents: 2203
diff changeset
26 local rbl_ip, err = reverse(ip, rbl);
6412595e2046 mod_register_dnsbl: Use async support in trunk to actually block registration if a positive match is found in the DNSBL
Kim Alvefur <zash@zash.se>
parents: 2203
diff changeset
27 if not rbl_ip then
4118
82482e7e92cb mod_register_dnsbl: Handle missing session in user-registering event (thanks meaz)
Matthew Wild <mwild1@gmail.com>
parents: 2892
diff changeset
28 log("debug", "Unable to check DNSBL for ip %s: %s", ip, err);
2890
6412595e2046 mod_register_dnsbl: Use async support in trunk to actually block registration if a positive match is found in the DNSBL
Kim Alvefur <zash@zash.se>
parents: 2203
diff changeset
29 return;
6412595e2046 mod_register_dnsbl: Use async support in trunk to actually block registration if a positive match is found in the DNSBL
Kim Alvefur <zash@zash.se>
parents: 2203
diff changeset
30 end
2112
0890c4860f14 mod_register_dnsbl: Initial commit of module to check users registering against an DNS block list
Kim Alvefur <zash@zash.se>
parents:
diff changeset
31
2890
6412595e2046 mod_register_dnsbl: Use async support in trunk to actually block registration if a positive match is found in the DNSBL
Kim Alvefur <zash@zash.se>
parents: 2203
diff changeset
32 local wait, done = async.waiter();
6412595e2046 mod_register_dnsbl: Use async support in trunk to actually block registration if a positive match is found in the DNSBL
Kim Alvefur <zash@zash.se>
parents: 2203
diff changeset
33 adns.lookup(function (reply)
6412595e2046 mod_register_dnsbl: Use async support in trunk to actually block registration if a positive match is found in the DNSBL
Kim Alvefur <zash@zash.se>
parents: 2203
diff changeset
34 if reply and reply[1] and reply[1].a then
4118
82482e7e92cb mod_register_dnsbl: Handle missing session in user-registering event (thanks meaz)
Matthew Wild <mwild1@gmail.com>
parents: 2892
diff changeset
35 log("debug", "DNSBL response: %s IN A %s", rbl_ip, reply[1].a);
82482e7e92cb mod_register_dnsbl: Handle missing session in user-registering event (thanks meaz)
Matthew Wild <mwild1@gmail.com>
parents: 2892
diff changeset
36 log("info", "Blocking %s from registering %s (dnsbl hit)", ip, event.username);
2890
6412595e2046 mod_register_dnsbl: Use async support in trunk to actually block registration if a positive match is found in the DNSBL
Kim Alvefur <zash@zash.se>
parents: 2203
diff changeset
37 event.allowed = false;
6412595e2046 mod_register_dnsbl: Use async support in trunk to actually block registration if a positive match is found in the DNSBL
Kim Alvefur <zash@zash.se>
parents: 2203
diff changeset
38 event.reason = "Blocked by DNSBL";
6412595e2046 mod_register_dnsbl: Use async support in trunk to actually block registration if a positive match is found in the DNSBL
Kim Alvefur <zash@zash.se>
parents: 2203
diff changeset
39 end
6412595e2046 mod_register_dnsbl: Use async support in trunk to actually block registration if a positive match is found in the DNSBL
Kim Alvefur <zash@zash.se>
parents: 2203
diff changeset
40 done();
6412595e2046 mod_register_dnsbl: Use async support in trunk to actually block registration if a positive match is found in the DNSBL
Kim Alvefur <zash@zash.se>
parents: 2203
diff changeset
41 end, rbl_ip);
6412595e2046 mod_register_dnsbl: Use async support in trunk to actually block registration if a positive match is found in the DNSBL
Kim Alvefur <zash@zash.se>
parents: 2203
diff changeset
42 wait();
2112
0890c4860f14 mod_register_dnsbl: Initial commit of module to check users registering against an DNS block list
Kim Alvefur <zash@zash.se>
parents:
diff changeset
43 end);