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annotate mod_muc_http_auth/mod_muc_http_auth.lua @ 4426:3fe2c264aac4

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mod_pubsub_summary: Mangle HTML payloads in Atom/RSS feeds This module is meant for use with mod_pubsub_feeds and tries to improve on mod_pubsub's built-in Atom summary generator.
author Kim Alvefur <zash@zash.se>
date Thu, 04 Feb 2021 01:12:41 +0100
parents 9606e7a63a69
children 4b3f054666e6
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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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12 local authorize_registration = module:get_option("muc_http_auth_authorize_registration", false)
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13 local authorization_header = module:get_option("muc_http_auth_authorization_header", nil)
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14
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15 local options = {method="GET", insecure=insecure}
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16 if authorization_header then
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17 options.headers = {["Authorization"] = authorization_header};
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18 end
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19
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20 local verbs = {presence='join', iq='register'};
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21
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22 local function must_be_authorized(room_node)
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23 -- If none of these is set, all rooms need authorization
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24 if not enabled_for and not disabled_for then return true; end
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25
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26 if enabled_for then return enabled_for:contains(room_node); end
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27 if disabled_for then return not disabled_for:contains(room_node); end
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28 end
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29
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30 local function handle_success(response)
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31 local body = json.decode(response.body or "") or {}
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32 response = {
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33 err = body.error,
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34 allowed = body.allowed,
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35 code = response.code
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36 }
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37 return {response=response, err=response.err};
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38 end
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39
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40 local function handle_error(err)
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41 return {err=err};
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42 end
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43
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44 local function handle_presence(event)
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45 local stanza = event.stanza;
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46 if stanza.name ~= "iq" and stanza.name ~= "presence" or stanza.attr.type == "unavailable" then return; end
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47
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48 local room, origin = event.room, event.origin;
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49 if (not room) or (not origin) then return; end
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50
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51 if not must_be_authorized(jid_node(room.jid)) then return; end
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52
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53 local user_bare_jid = jid_bare(stanza.attr.from);
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54 local url = authorization_url .. "?userJID=" .. user_bare_jid .."&mucJID=" .. room.jid;
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55
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56 local result = wait_for(http.request(url, options):next(handle_success, handle_error));
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57 local response, err = result.response, result.err;
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58
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59 local verb = verbs[stanza.name];
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60 if not (response and response.allowed) then
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61 -- User is not authorized to join this room
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62 err = (response or {}).err or err
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63 module:log("debug", user_bare_jid .. " is not authorized to " ..verb.. ": " .. room.jid .. " Error: " .. tostring(err));
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64 origin.send(st.error_reply(stanza, "auth", "not-authorized", nil, module.host));
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65 return true;
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66 end
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67
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68 module:log("debug", user_bare_jid .. " is authorized to " .. verb .. ": " .. room.jid);
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69 return;
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70 end
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71
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72 if authorize_registration then
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73 module:hook("muc-register-iq", handle_presence);
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74 end
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75
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76 module:hook("muc-occupant-pre-join", handle_presence);