prosody
a5f154548154
plugins/mod_component.lua

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plugins/mod_component.lua @ 2078:a5f154548154

util.sasl: Return proper error when client provides authzid.
author Waqas Hussain <waqas20@gmail.com>
date Fri, 13 Nov 2009 04:24:17 +0500
parent 1523:841d61be198f
child 2490:6eee75fb3159
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rev   line source
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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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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);