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annotate mod_component_roundrobin/mod_component_roundrobin.lua @ 5366:db4c66a1d24b

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mod_http_oauth2: Fill in some client metadata defaults Explicit > Implicit Maybe we should actually use these for something as well? :) It's is somewhat an open question of how strictly we should enforce things in the client metadata given that it is somewhat extensible. Especially some of these enum fields which have corresponding IANA registries.
author Kim Alvefur <zash@zash.se>
date Tue, 25 Apr 2023 18:09:08 +0200
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 --
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8
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9 if module:get_host_type() ~= "component" then
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10 error("Don't load mod_component manually, it should be for a component, please see http://prosody.im/doc/components", 0);
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11 end
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12
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13 local hosts = _G.hosts;
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14
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15 local t_concat = table.concat;
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16
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17 local sha1 = require "util.hashes".sha1;
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18 local st = require "util.stanza";
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19
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20 local log = module._log;
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21
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22 local sessions = module:shared("sessions");
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24 local last_session;
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25 local function on_destroy(session, err)
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26 if sessions[session] then
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27 if last_session == session then last_session = nil; end
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28 sessions[session] = nil;
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29 session.on_destroy = nil;
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30 end
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31 end
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32
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33 local function handle_stanza(event)
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34 local stanza = event.stanza;
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35 if next(sessions) then
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36 stanza.attr.xmlns = nil;
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37 last_session = next(sessions, last_session) or next(sessions);
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38 last_session.send(stanza);
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39 else
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40 log("warn", "Component not connected, bouncing error for: %s", stanza:top_tag());
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41 if stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then
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42 event.origin.send(st.error_reply(stanza, "wait", "service-unavailable", "Component unavailable"));
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43 end
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44 end
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45 return true;
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46 end
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47
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48 module:hook("iq/bare", handle_stanza, -0.5);
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49 module:hook("message/bare", handle_stanza, -0.5);
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50 module:hook("presence/bare", handle_stanza, -0.5);
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51 module:hook("iq/full", handle_stanza, -0.5);
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52 module:hook("message/full", handle_stanza, -0.5);
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53 module:hook("presence/full", handle_stanza, -0.5);
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54 module:hook("iq/host", handle_stanza, -0.5);
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55 module:hook("message/host", handle_stanza, -0.5);
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56 module:hook("presence/host", handle_stanza, -0.5);
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57
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58 --- Handle authentication attempts by components
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59 function handle_component_auth(event)
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60 local session, stanza = event.origin, event.stanza;
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61
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62 if session.type ~= "component_unauthed" then return; end
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63 if sessions[session] then return; end
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64
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65 if (not session.host) or #stanza.tags > 0 then
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66 (session.log or log)("warn", "Invalid component handshake for host: %s", session.host);
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67 session:close("not-authorized");
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68 return true;
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69 end
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70
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71 local secret = module:get_option("component_secret");
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72 if not secret then
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73 (session.log or log)("warn", "Component attempted to identify as %s, but component_secret is not set", session.host);
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74 session:close("not-authorized");
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75 return true;
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76 end
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77
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78 local supplied_token = t_concat(stanza);
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79 local calculated_token = sha1(session.streamid..secret, true);
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80 if supplied_token:lower() ~= calculated_token:lower() then
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81 log("info", "Component authentication failed for %s", session.host);
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82 session:close{ condition = "not-authorized", text = "Given token does not match calculated token" };
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83 return true;
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84 end
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85
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86 -- Add session to sessions table
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87 sessions[session] = true;
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88 session.on_destroy = on_destroy;
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89 session.component_validate_from = module:get_option_boolean("validate_from_addresses", true);
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90 session.type = "component";
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91 log("info", "Component successfully authenticated: %s", session.host);
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92 session.send(st.stanza("handshake"));
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93
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94 return true;
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95 end
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96
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97 module:hook("stanza/jabber:component:accept:handshake", handle_component_auth, 10);