prosody-modules
c539334dd01a
mod_muc_ban_ip/mod_muc_ban_ip.lua

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mod_muc_ban_ip/mod_muc_ban_ip.lua @ 4260:c539334dd01a

mod_http_oauth2: Rescope oauth client config into users' storage This produces client_id of the form owner@host/random and prevents clients from being deleted by registering an account with the same name and then deleting the account, as well as having the client automatically be deleted when the owner account is removed. On one hand, this leaks the bare JID of the creator to users. On the other hand, it makes it obvious who made the oauth application. This module is experimental and only for developers, so this can be changed if a better method comes up.
author Kim Alvefur <zash@zash.se>
date Sat, 21 Nov 2020 23:55:10 +0100
parent 3995:4c9805f29f2d
child 4321:71498f484c22
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rev   line source
1005
591590de34ef mod_muc_ban_ip: When a user is banned from a MUC, ban their IP from the MUC also (works for remote rooms too)
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1 module:set_global();
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2
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3 local jid_bare = require "util.jid".bare;
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4 local st = require "util.stanza";
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5 local xmlns_muc_user = "http://jabber.org/protocol/muc#user";
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7 local ip_bans = module:shared("bans");
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8 local full_sessions = prosody.full_sessions;
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10 local function ban_ip(session, from)
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11 local ip = session.ip;
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12 if not ip then
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13 module:log("warn", "Failed to ban IP (IP unknown) for %s", session.full_jid);
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14 return;
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15 end
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16 local banned_from = ip_bans[ip];
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17 if not banned_from then
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18 banned_from = {};
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19 ip_bans[ip] = banned_from;
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20 end
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21 banned_from[from] = true;
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22 module:log("debug", "Added ban for IP address %s from %s", ip, from);
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23 end
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24
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25 local function check_for_incoming_ban(event)
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26 local stanza = event.stanza;
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27 local to_session = full_sessions[stanza.attr.to];
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28 if to_session then
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29 local directed = to_session.directed;
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30 local from = stanza.attr.from;
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31 if directed and directed[from] and stanza.attr.type == "unavailable" then
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32 -- This is a stanza from somewhere we sent directed presence to (may be a MUC)
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33 local x = stanza:get_child("x", xmlns_muc_user);
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34 if x then
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35 for status in x:childtags("status") do
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36 if status.attr.code == '301' then
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37 ban_ip(to_session, jid_bare(from));
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38 end
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39 end
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40 end
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41 end
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42 end
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43 end
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44
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45 local function check_for_ban(event)
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46 local origin, stanza = event.origin, event.stanza;
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47 local ip = origin.ip;
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48 local to = jid_bare(stanza.attr.to);
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49 if ip_bans[ip] and ip_bans[ip][to] then
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50 (origin.log or module._log)("debug", "IP banned: %s is banned from %s", ip, to)
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51 origin.send(st.error_reply(stanza, "auth", "forbidden")
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52 :tag("x", { xmlns = xmlns_muc_user })
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53 :tag("status", { code = '301' }));
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54 return true;
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55 end
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56 (origin.log or module._log)("debug", "IP not banned: %s from %s", ip, to)
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57 end
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58
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59 function module.add_host(module)
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60 module:hook("presence/full", check_for_incoming_ban, 100);
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61 module:hook("pre-presence/full", check_for_ban, 100);
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62 end