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annotate mod_muc_http_auth/mod_muc_http_auth.lua @ 4537:53ee391ca689

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mod_smacks: Fix traceback due to session being destroyed in send() Sending something can cause the OS to notice that the connection is dead and then the connection can be dead at this point. More likely if opportunistic_writes is enabled.
author Kim Alvefur <zash@zash.se>
date Thu, 01 Apr 2021 11:35:26 +0200
parents 9606e7a63a69
children 4b3f054666e6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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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d261233f7ced Improve UX by providing defaults users expect
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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);