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annotate mod_muc_http_auth/mod_muc_http_auth.lua @ 4299:8006da2cf44c

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For deployments that have https://hg.prosody.im/trunk/file/tip/plugins/muc/register.lib.lua#l7 and use https://modules.prosody.im/mod_muc_http_auth.html users can still register to a MUC even if they are not allowed to join. That means they would receive RAI or RMN, for instance.
author Seve Ferrer <seve@delape.net>
date Tue, 15 Dec 2020 11:26:29 +0100
parents 08138de4cb88
children bcb2b9adfcde
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rev   line source
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08138de4cb88 Prosodoy module to externalize MUC authorization via HTTP
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1 local wait_for = require "util.async".wait_for;
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2 local http = require "net.http";
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3 local json = require "util.json";
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4 local st = require "util.stanza";
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5 local jid_node = require "util.jid".node;
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6 local jid_bare = require "util.jid".bare;
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7
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8 local authorization_url = module:get_option("muc_http_auth_url", "")
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9 local enabled_for = module:get_option_set("muc_http_auth_enabled_for", nil)
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10 local disabled_for = module:get_option_set("muc_http_auth_disabled_for", nil)
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11 local insecure = module:get_option("muc_http_auth_insecure", false) --For development purposes
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8006da2cf44c For deployments that have https://hg.prosody.im/trunk/file/tip/plugins/muc/register.lib.lua#l7 and use https://modules.prosody.im/mod_muc_http_auth.html users can still register to a MUC even if they are not allowed to join. That means they would receive RAI or RMN, for instance.
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12 local authorize_registration = module:get_option("muc_http_auth_authorize_registration", false)
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13
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14 local function must_be_authorized(room_node)
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15 -- If none of these is set, all rooms need authorization
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16 if not enabled_for and not disabled_for then return true; end
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17
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18 if enabled_for and not disabled_for then
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19 for _, _room_node in ipairs(enabled_for) do
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20 if _room_node == room_node then
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21 return true;
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22 end
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23 end
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24 end
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25
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26 if disabled_for and not enabled_for then
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27 for _, _room_node in ipairs(disabled_for) do
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28 if _room_node == room_node then
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29 return false;
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30 end
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31 end
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32 end
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33
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34 return true;
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35 end
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36
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37 local function handle_success(response)
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38 local body = json.decode(response.body or "") or {}
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39 response = {
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40 err = body.error,
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41 allowed = body.allowed,
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42 code = response.code
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43 }
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44 return {response=response, err=response.err};
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45 end
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46
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47 local function handle_error(err)
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48 return {err=err};
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49 end
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50
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51 local function handle_presence(event)
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52 local stanza = event.stanza;
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53 if stanza.name ~= "presence" or stanza.attr.type == "unavailable" then
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54 return;
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55 end
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56
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57 local room, origin = event.room, event.origin;
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58 if (not room) or (not origin) then return; end
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59
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60 if not must_be_authorized(jid_node(room.jid)) then return; end
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61
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62 local user_bare_jid = jid_bare(stanza.attr.from);
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63 local url = authorization_url .. "?userJID=" .. user_bare_jid .."&mucJID=" .. room.jid;
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64
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65 local result = wait_for(http.request(url, {method="GET", insecure=insecure}):next(handle_success, handle_error));
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66 local response, err = result.response, result.err;
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67
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68 if not (response and response.allowed) then
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69 -- User is not authorized to join this room
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70 err = (response or {}).err or err
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71 module:log("debug", user_bare_jid .. " is not authorized to join " .. room.jid .. " Error: " .. tostring(err));
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72 origin.send(st.error_reply(stanza, "error", "not-authorized", nil, module.host));
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73 return true;
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74 end
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75
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76 module:log("debug", user_bare_jid .. " is authorized to join " .. room.jid);
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77 return;
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78 end
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79
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80 if authorize_registration then
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81 module:hook("muc-register-iq", handle_presence);
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82 end
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83
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84 module:hook("muc-occupant-pre-join", handle_presence);