prosody
a2a242321901
plugins/mod_component.lua

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plugins/mod_component.lua @ 3366:a2a242321901

util.sasl, util.sasl_cyrus: Use method:mechanisms() in method:select(), instead of using the mechanisms list directly (fixes a traceback).
author Waqas Hussain <waqas20@gmail.com>
date Wed, 14 Jul 2010 20:21:51 +0500
parent 3319:95fc08869273
child 3503:85e511e01d3c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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 config = require "core.configmanager";
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18 local cm_register_component = require "core.componentmanager".register_component;
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19 local cm_deregister_component = require "core.componentmanager".deregister_component;
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20 local sha1 = require "util.hashes".sha1;
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21 local st = require "util.stanza";
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22
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23 local log = module._log;
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24
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25 --- Handle authentication attempts by components
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26 function handle_component_auth(session, stanza)
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27 log("info", "Handling component auth");
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28 if (not session.host) or #stanza.tags > 0 then
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29 (session.log or log)("warn", "Component handshake invalid");
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30 session:close("not-authorized");
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31 return;
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32 end
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33
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34 local secret = config.get(session.user, "core", "component_secret");
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35 if not secret then
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36 (session.log or log)("warn", "Component attempted to identify as %s, but component_secret is not set", session.user);
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37 session:close("not-authorized");
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38 return;
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39 end
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40
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41 local supplied_token = t_concat(stanza);
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42 local calculated_token = sha1(session.streamid..secret, true);
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43 if supplied_token:lower() ~= calculated_token:lower() then
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44 log("info", "Component for %s authentication failed", session.host);
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45 session:close{ condition = "not-authorized", text = "Given token does not match calculated token" };
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46 return;
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47 end
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50 -- Authenticated now
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51 log("info", "Component authenticated: %s", session.host);
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52
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53 session.component_validate_from = module:get_option_boolean("validate_from_addresses") ~= false;
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54
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55 -- If component not already created for this host, create one now
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56 if not hosts[session.host].connected then
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57 local send = session.send;
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58 session.component_session = cm_register_component(session.host, function (_, data)
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59 if data.attr and data.attr.xmlns == "jabber:client" then
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60 data.attr.xmlns = nil;
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61 end
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62 return send(data);
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63 end);
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64 hosts[session.host].connected = true;
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65 log("info", "Component successfully registered");
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66 else
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67 log("error", "Multiple components bound to the same address, first one wins (TODO: Implement stanza distribution)");
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68 end
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69
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70 -- Signal successful authentication
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71 session.send(st.stanza("handshake"));
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72 end
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73
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74 module:add_handler("component", "handshake", "jabber:component:accept", handle_component_auth);