prosody-modules
c77010f25b14
mod_isolate_host/mod_isolate_host.lua

Find changesets by keywords by author, files, the commit message, revision number or hash, or revset expression.

Software / code / prosody-modules

Annotate

mod_isolate_host/mod_isolate_host.lua @ 5737:c77010f25b14

mod_audit: Replace argument parsing debug print() with debug logging prosodyctl -v to view
author Kim Alvefur <zash@zash.se>
date Tue, 14 Nov 2023 16:01:33 +0100
parent 5297:4bba2d27ffaf
child 5812:25e20fa3824c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1011
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1 local jid = require "util.jid";
5004
bc75fc9400ae mod_isolate_host: Switch to module:may() (back compatible via compat_roles)
Matthew Wild <mwild1@gmail.com>
parents: 1792
diff changeset
2 local jid_bare, jid_host = jid.bare, jid.host;
1011
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
3 local set = require "util.set";
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
4 local st = require "util.stanza";
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
5
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
6 local stanza_types = set.new{"message", "presence", "iq"};
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
7 local jid_types = set.new{"bare", "full", "host"};
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
8
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
9 local except_domains = module:get_option_inherited_set("isolate_except_domains", {});
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
10 local except_users = module:get_option_inherited_set("isolate_except_users", {});
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
11
5004
bc75fc9400ae mod_isolate_host: Switch to module:may() (back compatible via compat_roles)
Matthew Wild <mwild1@gmail.com>
parents: 1792
diff changeset
12 if not module.may then
bc75fc9400ae mod_isolate_host: Switch to module:may() (back compatible via compat_roles)
Matthew Wild <mwild1@gmail.com>
parents: 1792
diff changeset
13 module:depends("compat_roles");
bc75fc9400ae mod_isolate_host: Switch to module:may() (back compatible via compat_roles)
Matthew Wild <mwild1@gmail.com>
parents: 1792
diff changeset
14 end
bc75fc9400ae mod_isolate_host: Switch to module:may() (back compatible via compat_roles)
Matthew Wild <mwild1@gmail.com>
parents: 1792
diff changeset
15
1011
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
16 function check_stanza(event)
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
17 local origin, stanza = event.origin, event.stanza;
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
18 if origin.no_host_isolation then return; end
5004
bc75fc9400ae mod_isolate_host: Switch to module:may() (back compatible via compat_roles)
Matthew Wild <mwild1@gmail.com>
parents: 1792
diff changeset
19 local to_host = jid_host(event.stanza.attr.to);
1011
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
20 if to_host and to_host ~= origin.host and not except_domains:contains(to_host) then
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
21 if to_host:match("^[^.]+%.(.+)$") == origin.host then -- Permit subdomains
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
22 except_domains:add(to_host);
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
23 return;
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
24 end
5296
0f5657db1cfc mod_isolate_host: handle server-generated stanzas
Jonas Schäfer <jonas@wielicki.name>
parents: 5096
diff changeset
25 if origin.type == "local" then
0f5657db1cfc mod_isolate_host: handle server-generated stanzas
Jonas Schäfer <jonas@wielicki.name>
parents: 5096
diff changeset
26 -- this is code-generated, which means that set_session_isolation_flag has never triggered.
0f5657db1cfc mod_isolate_host: handle server-generated stanzas
Jonas Schäfer <jonas@wielicki.name>
parents: 5096
diff changeset
27 -- we need to check explicitly.
0f5657db1cfc mod_isolate_host: handle server-generated stanzas
Jonas Schäfer <jonas@wielicki.name>
parents: 5096
diff changeset
28 if not is_jid_isolated(jid_bare(event.stanza.attr.from)) then
0f5657db1cfc mod_isolate_host: handle server-generated stanzas
Jonas Schäfer <jonas@wielicki.name>
parents: 5096
diff changeset
29 module:log("debug", "server-generated stanza from %s is allowed, as the jid is not isolated", event.stanza.attr.from);
0f5657db1cfc mod_isolate_host: handle server-generated stanzas
Jonas Schäfer <jonas@wielicki.name>
parents: 5096
diff changeset
30 return;
0f5657db1cfc mod_isolate_host: handle server-generated stanzas
Jonas Schäfer <jonas@wielicki.name>
parents: 5096
diff changeset
31 end
0f5657db1cfc mod_isolate_host: handle server-generated stanzas
Jonas Schäfer <jonas@wielicki.name>
parents: 5096
diff changeset
32 end
1011
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
33 module:log("warn", "Forbidding stanza from %s to %s", stanza.attr.from or origin.full_jid, stanza.attr.to);
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
34 origin.send(st.error_reply(stanza, "auth", "forbidden", "Communication with "..to_host.." is not available"));
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
35 return true;
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
36 end
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
37 end
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
38
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
39 for stanza_type in stanza_types do
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
40 for jid_type in jid_types do
1792
8e19b943c2cd mod_isolate_host: Bump event hook priorities to make sure they are above the core plugins
Kim Alvefur <zash@zash.se>
parents: 1011
diff changeset
41 module:hook("pre-"..stanza_type.."/"..jid_type, check_stanza, 1);
1011
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
42 end
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
43 end
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
44
5004
bc75fc9400ae mod_isolate_host: Switch to module:may() (back compatible via compat_roles)
Matthew Wild <mwild1@gmail.com>
parents: 1792
diff changeset
45 module:default_permission("prosody:admin", "xmpp:federate");
bc75fc9400ae mod_isolate_host: Switch to module:may() (back compatible via compat_roles)
Matthew Wild <mwild1@gmail.com>
parents: 1792
diff changeset
46
5296
0f5657db1cfc mod_isolate_host: handle server-generated stanzas
Jonas Schäfer <jonas@wielicki.name>
parents: 5096
diff changeset
47 function is_jid_isolated(bare_jid)
5297
4bba2d27ffaf mod_isolate_host: potentially pedantic optimization
Jonas Schäfer <jonas@wielicki.name>
parents: 5296
diff changeset
48 if except_users:contains(bare_jid) or module:may("xmpp:federate", bare_jid) then
5296
0f5657db1cfc mod_isolate_host: handle server-generated stanzas
Jonas Schäfer <jonas@wielicki.name>
parents: 5096
diff changeset
49 return false;
0f5657db1cfc mod_isolate_host: handle server-generated stanzas
Jonas Schäfer <jonas@wielicki.name>
parents: 5096
diff changeset
50 else
0f5657db1cfc mod_isolate_host: handle server-generated stanzas
Jonas Schäfer <jonas@wielicki.name>
parents: 5096
diff changeset
51 return true;
0f5657db1cfc mod_isolate_host: handle server-generated stanzas
Jonas Schäfer <jonas@wielicki.name>
parents: 5096
diff changeset
52 end
0f5657db1cfc mod_isolate_host: handle server-generated stanzas
Jonas Schäfer <jonas@wielicki.name>
parents: 5096
diff changeset
53 end
0f5657db1cfc mod_isolate_host: handle server-generated stanzas
Jonas Schäfer <jonas@wielicki.name>
parents: 5096
diff changeset
54
0f5657db1cfc mod_isolate_host: handle server-generated stanzas
Jonas Schäfer <jonas@wielicki.name>
parents: 5096
diff changeset
55 function set_session_isolation_flag(event)
1011
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
56 local session = event.session;
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
57 local bare_jid = jid_bare(session.full_jid);
5296
0f5657db1cfc mod_isolate_host: handle server-generated stanzas
Jonas Schäfer <jonas@wielicki.name>
parents: 5096
diff changeset
58 if not is_jid_isolated(bare_jid) then
1011
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
59 session.no_host_isolation = true;
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
60 end
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
61 module:log("debug", "%s is %sisolated", session.full_jid or "[?]", session.no_host_isolation and "" or "not ");
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
62 end
9466efd10af9 mod_isolate_host: Prevent communication between hosts, even internal ones
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
63
5296
0f5657db1cfc mod_isolate_host: handle server-generated stanzas
Jonas Schäfer <jonas@wielicki.name>
parents: 5096
diff changeset
64 module:hook("resource-bind", set_session_isolation_flag);