Mercurial > prosody-modules

annotate mod_muc_ban_ip/mod_muc_ban_ip.lua @ 4421:94805a7e7b30

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mod_invites: rework CLI parsing to support groups To make this sensible, the code had to move from rather simple parsing to something which looks more like getopt or your typical shell script.
author Jonas Schäfer <jonas@wielicki.name>
date Sun, 31 Jan 2021 19:16:36 +0100
parents a7a06c8cea37
children 47d9f704d14b
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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)
Matthew Wild <mwild1@gmail.com>
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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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9
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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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a7a06c8cea37 mod_muc_ban_ip: Lua is not C, fix typo
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51 if stanza.attr.type ~= "error" then
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52 origin.send(st.error_reply(stanza, "auth", "forbidden")
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53 :tag("x", { xmlns = xmlns_muc_user })
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54 :tag("status", { code = '301' }));
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55 end
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56 return true;
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57 end
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58 (origin.log or module._log)("debug", "IP not banned: %s from %s", ip, to)
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59 end
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60
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61 function module.add_host(module)
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62 module:hook("presence/full", check_for_incoming_ban, 100);
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63 module:hook("pre-presence/full", check_for_ban, 100);
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64 end