Mercurial > prosody-modules

annotate mod_http_muc_kick/mod_http_muc_kick.lua @ 5401:c8d04ac200fc

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mod_http_oauth2: Reject loopback URIs as client_uri This really should be a proper website with info, https://localhost is not good enough. Ideally we'd validate that it's got proper DNS and is actually reachable, but triggering HTTP or even DNS lookups seems like it would carry abuse potential that would best to avoid.
author Kim Alvefur <zash@zash.se>
date Tue, 02 May 2023 16:20:55 +0200
parents e524a97730eb
children
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1 local jid_split = require "util.jid".prepped_split;
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2 local json = require "util.json";
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3
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4 module:depends("http");
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5
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6 local authorization = assert(
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7 module:get_option_string("http_muc_kick_authorization_header", nil),
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8 "http_muc_kick_authorization_header setting is missing, please add it to the Prosody config before using mod_http_muc_kick"
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9 );
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10
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11 local function is_authorized(request)
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12 return request.headers.authorization == authorization;
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13 end
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14
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15 local function check_muc(jid)
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16 local muc_node, host = jid_split(jid);
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17
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18 if not hosts[host] then
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19 return nil, nil, "No such host: "..host;
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20 elseif not hosts[host].modules.muc then
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21 return nil, nil, "Host '"..host.."' is not a MUC service";
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22 end
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23
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24 return muc_node, host;
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25 end
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26
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27 local function get_muc(muc_jid)
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28 local muc_node, host, err = check_muc(muc_jid);
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29 if not muc_node then
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30 return nil, host, err;
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31 end
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32
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33 local muc = prosody.hosts[host].modules.muc.get_room_from_jid(muc_jid);
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34 if not muc then
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35 return nil, host, "No MUC '"..muc_node.."' found for host: "..host;
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36 end
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37
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38 return muc;
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39 end
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40
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41 local function handle_error(response, status_code, error)
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42 response.headers.content_type = "application/json";
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43 response.status_code = status_code;
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44 response:send(json.encode({error = error}));
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45
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46 -- return true to keep the connection open, and prevent other handlers from executing.
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47 -- https://prosody.im/doc/developers/http#return_value
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48 return true;
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49 end
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50
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51 module:provides("http", {
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52 route = {
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53 ["POST"] = function (event)
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54 local request, response = event.request, event.response;
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55
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56 if not is_authorized(request) then
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57 return handle_error(response, 401, "Authorization failed");
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58 end
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59
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60 local body = json.decode(request.body or "") or {};
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61 if not body then
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62 return handle_error(response, 400, "JSON body not found");
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63 end
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64
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65 local nickname, muc_jid, reason = body.nickname, body.muc, body.reason or "";
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66 if not nickname or not muc_jid then
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67 return handle_error(response, 400, "Missing nickname and/or MUC");
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68 end
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69
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70 local muc, _, err = get_muc(muc_jid);
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71 if not muc then
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72 return handle_error(response, 404, "MUC not found: " .. err);
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73 end
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74
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75 local occupant_jid = muc.jid .. "/" .. nickname;
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76
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77 -- Kick user by giving them the "none" role
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78 -- https://xmpp.org/extensions/xep-0045.html#kick
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79 local success, error, condition = muc:set_role(true, occupant_jid, nil, reason);
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80 if not success then
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81 return handle_error(response, 400, "Couldn't kick user: ".. error .. ": " .. condition);
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82 end
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83
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84 -- Kick was successful
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85 return 200;
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86 end;
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87 };
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88 });