prosody
b1140808598b
plugins/mod_component.lua

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plugins/mod_component.lua @ 3898:b1140808598b

configmanager: Switch back to returning 'ok' to signal config load success - fixes config errors not being displayed
author Matthew Wild <mwild1@gmail.com>
date Sat, 18 Dec 2010 23:15:58 +0000
parent 3798:d835068a5791
child 4301:1484ac561b28
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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 main_session, send;
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24 local function on_destroy(session, err)
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25 if main_session == session then
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26 main_session = nil;
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27 send = nil;
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28 session.on_destroy = nil;
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29 end
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30 end
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32 local function handle_stanza(event)
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33 local stanza = event.stanza;
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34 if send then
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35 stanza.attr.xmlns = nil;
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36 send(stanza);
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37 else
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38 log("warn", "Stanza being handled by default component; bouncing error for: %s", stanza:top_tag());
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39 if stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then
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40 event.origin.send(st.error_reply(stanza, "wait", "service-unavailable", "Component unavailable"));
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41 end
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42 end
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43 return true;
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44 end
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45
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46 module:hook("iq/bare", handle_stanza, -1);
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47 module:hook("message/bare", handle_stanza, -1);
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48 module:hook("presence/bare", handle_stanza, -1);
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49 module:hook("iq/full", handle_stanza, -1);
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50 module:hook("message/full", handle_stanza, -1);
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51 module:hook("presence/full", handle_stanza, -1);
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52 module:hook("iq/host", handle_stanza, -1);
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53 module:hook("message/host", handle_stanza, -1);
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54 module:hook("presence/host", handle_stanza, -1);
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55
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56 --- Handle authentication attempts by components
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57 function handle_component_auth(event)
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58 local session, stanza = event.origin, event.stanza;
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59
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60 if session.type ~= "component" then return; end
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61 if main_session == session then return; end
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62
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63 if (not session.host) or #stanza.tags > 0 then
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64 (session.log or log)("warn", "Invalid component handshake for host: %s", session.host);
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65 session:close("not-authorized");
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66 return true;
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67 end
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68
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69 local secret = module:get_option("component_secret");
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70 if not secret then
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71 (session.log or log)("warn", "Component attempted to identify as %s, but component_secret is not set", session.host);
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72 session:close("not-authorized");
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73 return true;
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74 end
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75
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76 local supplied_token = t_concat(stanza);
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77 local calculated_token = sha1(session.streamid..secret, true);
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78 if supplied_token:lower() ~= calculated_token:lower() then
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79 log("info", "Component authentication failed for %s", session.host);
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80 session:close{ condition = "not-authorized", text = "Given token does not match calculated token" };
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81 return true;
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82 end
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83
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84 -- If component not already created for this host, create one now
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85 if not main_session then
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86 send = session.send;
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87 main_session = session;
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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") ~= false;
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90 log("info", "Component successfully authenticated: %s", session.host);
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91 session.send(st.stanza("handshake"));
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92 else -- TODO: Implement stanza distribution
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93 log("error", "Multiple components bound to the same address, first one wins: %s", session.host);
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94 session:close{ condition = "conflict", text = "Component already connected" };
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95 end
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96
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97 return true;
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98 end
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99
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100 module:hook("stanza/jabber:component:accept:handshake", handle_component_auth);