Mercurial > prosody-modules

annotate mod_muc_ban_ip/mod_muc_ban_ip.lua @ 5627:3a5cf8d80089

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mod_http_oauth2: Tweak method of centering the UI The percentage here was relative to the viewport width, which on some very wide screens may put the UI slightly outside of the view, requiring scrolling to see. By using a unit relative to the height of the viewport, this is avoided and should work better. But no guarantees, it's still possible to resize the browser or adjust font sizes so that the UI goes out of view.
author Kim Alvefur <zash@zash.se>
date Mon, 31 Jul 2023 07:28:09 +0200
parents 47d9f704d14b
children
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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)
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1 module:set_global();
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2
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3 local jid_bare, jid_host = require "util.jid".bare, require "util.jid".host;
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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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6
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7 local trusted_services = module:get_option_inherited_set("muc_ban_ip_trusted_services", {});
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8 local trust_local_restricted_services = module:get_option_boolean("muc_ban_ip_trust_local_restricted_services", true);
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9
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10 local ip_bans = module:shared("bans");
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11 local full_sessions = prosody.full_sessions;
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12
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13 local function is_local_restricted_service(host)
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14 local muc_service = prosody.hosts[host] and prosody.hosts[host].modules.muc;
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15 if muc_service and module:context(host):get_option("restrict_room_creation") ~= nil then -- COMPAT: May need updating post-0.12
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16 return true;
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17 end
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18 return false;
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19 end
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21 local function ban_ip(session, from)
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22 local ip = session.ip;
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23 if not ip then
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24 module:log("warn", "Failed to ban IP (IP unknown) for %s", session.full_jid);
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25 return;
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26 end
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27 local from_host = jid_host(from);
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28 if trusted_services:contains(from_host) or (trust_local_restricted_services and is_local_restricted_service(from_host)) then
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29 from = from_host; -- Ban from entire host
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30 end
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31 local banned_from = ip_bans[ip];
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32 if not banned_from then
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33 banned_from = {};
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34 ip_bans[ip] = banned_from;
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35 end
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36 banned_from[from] = true;
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37 module:log("debug", "Added ban for IP address %s from %s", ip, from);
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38 end
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39
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40 local function check_for_incoming_ban(event)
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41 local stanza = event.stanza;
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42 local to_session = full_sessions[stanza.attr.to];
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43 if to_session then
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44 local directed = to_session.directed;
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45 local from = stanza.attr.from;
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46 if directed and directed[from] and stanza.attr.type == "unavailable" then
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47 -- This is a stanza from somewhere we sent directed presence to (may be a MUC)
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48 local x = stanza:get_child("x", xmlns_muc_user);
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49 if x then
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50 for status in x:childtags("status") do
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51 if status.attr.code == '301' then
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52 ban_ip(to_session, jid_bare(from));
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53 end
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54 end
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55 end
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56 end
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57 end
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58 end
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59
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60 local function check_for_ban(event)
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61 local origin, stanza = event.origin, event.stanza;
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62 local ip = origin.ip;
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63 local to, to_host = jid_bare(stanza.attr.to), jid_host(stanza.attr.to);
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64 if ip_bans[ip] and (ip_bans[ip][to] or ip_bans[ip][to_host]) then
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65 (origin.log or module._log)("debug", "IP banned: %s is banned from %s", ip, to)
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66 if stanza.attr.type ~= "error" then
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67 origin.send(st.error_reply(stanza, "auth", "forbidden")
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68 :tag("x", { xmlns = xmlns_muc_user })
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69 :tag("status", { code = '301' }));
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70 end
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71 return true;
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72 end
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73 (origin.log or module._log)("debug", "IP not banned: %s from %s", ip, to)
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74 end
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75
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76 function module.add_host(module)
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77 module:hook("presence/full", check_for_incoming_ban, 100);
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78 module:hook("pre-presence/full", check_for_ban, 100);
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79 end