Sat, 17 Oct 2009 23:48:30 +0500
modulemanager: Slightly rearranged code for more robust unloading of modules.
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1 | -- Prosody IM |
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2 | -- Copyright (C) 2008-2009 Matthew Wild |
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3 | -- Copyright (C) 2008-2009 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 lxp = require "lxp"; |
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18 | local logger = require "util.logger"; |
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19 | local config = require "core.configmanager"; |
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20 | local connlisteners = require "net.connlisteners"; |
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21 | local cm_register_component = require "core.componentmanager".register_component; |
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22 | local cm_deregister_component = require "core.componentmanager".deregister_component; |
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23 | local uuid_gen = require "util.uuid".generate; |
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24 | local sha1 = require "util.hashes".sha1; |
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25 | local st = require "util.stanza"; |
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26 | local init_xmlhandlers = require "core.xmlhandlers"; |
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27 | |
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28 | local sessions = {}; |
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29 | |
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30 | local log = module._log; |
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31 | |
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32 | local component_listener = { default_port = 5347; default_mode = "*a"; default_interface = config.get("*", "core", "component_interface") or "127.0.0.1" }; |
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33 | |
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34 | local xmlns_component = 'jabber:component:accept'; |
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35 | |
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36 | --- Handle authentication attempts by components |
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37 | function handle_component_auth(session, stanza) |
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38 | log("info", "Handling component auth"); |
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39 | if (not session.host) or #stanza.tags > 0 then |
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40 | (session.log or log)("warn", "Component handshake invalid"); |
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41 | session:close("not-authorized"); |
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42 | return; |
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43 | end |
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44 | |
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45 | local secret = config.get(session.user, "core", "component_secret"); |
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46 | if not secret then |
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47 | (session.log or log)("warn", "Component attempted to identify as %s, but component_password is not set", session.user); |
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48 | session:close("not-authorized"); |
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49 | return; |
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50 | end |
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51 | |
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52 | local supplied_token = t_concat(stanza); |
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53 | local calculated_token = sha1(session.streamid..secret, true); |
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54 | if supplied_token:lower() ~= calculated_token:lower() then |
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55 | log("info", "Component for %s authentication failed", session.host); |
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56 | session:close{ condition = "not-authorized", text = "Given token does not match calculated token" }; |
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57 | return; |
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58 | end |
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59 | |
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60 | |
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61 | -- Authenticated now |
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62 | log("info", "Component authenticated: %s", session.host); |
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63 | |
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64 | -- If component not already created for this host, create one now |
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65 | if not hosts[session.host].connected then |
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66 | local send = session.send; |
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67 | session.component_session = cm_register_component(session.host, function (_, data) |
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68 | if data.attr and data.attr.xmlns == "jabber:client" then |
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69 | data.attr.xmlns = nil; |
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70 | end |
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71 | return send(data); |
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72 | end); |
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73 | hosts[session.host].connected = true; |
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74 | log("info", "Component successfully registered"); |
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75 | else |
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76 | log("error", "Multiple components bound to the same address, first one wins (TODO: Implement stanza distribution)"); |
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77 | end |
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78 | |
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79 | -- Signal successful authentication |
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80 | session.send(st.stanza("handshake")); |
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81 | end |
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82 | |
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83 | module:add_handler("component", "handshake", xmlns_component, handle_component_auth); |