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annotate mod_muc_http_auth/mod_muc_http_auth.lua @ 4432:e83284d4d5c2

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mod_auth_ccert/README: Add setting to ensure Prosdy asks for client certificate This used to be the default for all services, but since it triggers annoying popups in web browsers it was inverted in Prosody and only s2s enables it, so it needs to be explicitly enabled for c2s again. See trunk 115b5e32d960 Thanks debacle
author Kim Alvefur <zash@zash.se>
date Sat, 06 Feb 2021 21:34:25 +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);