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annotate mod_component_roundrobin/mod_component_roundrobin.lua @ 737:e4ea03b060ed

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mod_archive: switch from/to The XEP-0136 is not very explicit about the meening of <from> and <to> elements, but the examples are clear: <from> means it comes from the user in the 'with' attribute of the collection. That is the opposite of what is currently implemented in that module. So for better compatibility with complient clients, this switch the 'from' and 'to' fields
author Olivier Goffart <ogoffart@woboq.com>
date Wed, 04 Jul 2012 14:08:43 +0200
parents a6d215c73c47
children 08e50d742392
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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 = {};
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23
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24 local function on_destroy(session, err)
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25 if sessions[session] then
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26 sessions[session] = nil;
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27 session.on_destroy = nil;
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28 end
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29 end
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30
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31 local last_session;
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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 next(sessions) then
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35 stanza.attr.xmlns = nil;
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36 last_session = next(sessions, last_session) or next(sessions);
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37 last_session.send(stanza);
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38 else
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39 log("warn", "Component not connected, bouncing error for: %s", stanza:top_tag());
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40 if stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then
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41 event.origin.send(st.error_reply(stanza, "wait", "service-unavailable", "Component unavailable"));
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42 end
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43 end
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44 return true;
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45 end
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46
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47 module:hook("iq/bare", handle_stanza, -1);
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48 module:hook("message/bare", handle_stanza, -1);
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49 module:hook("presence/bare", handle_stanza, -1);
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50 module:hook("iq/full", handle_stanza, -1);
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51 module:hook("message/full", handle_stanza, -1);
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52 module:hook("presence/full", handle_stanza, -1);
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53 module:hook("iq/host", handle_stanza, -1);
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54 module:hook("message/host", handle_stanza, -1);
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55 module:hook("presence/host", handle_stanza, -1);
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56
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57 --- Handle authentication attempts by components
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58 function handle_component_auth(event)
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59 local session, stanza = event.origin, event.stanza;
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60
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61 if session.type ~= "component" then return; end
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62 if sessions[session] then return; end
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63
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64 if (not session.host) or #stanza.tags > 0 then
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65 (session.log or log)("warn", "Invalid component handshake for host: %s", session.host);
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66 session:close("not-authorized");
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67 return true;
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68 end
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69
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70 local secret = module:get_option("component_secret");
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71 if not secret then
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72 (session.log or log)("warn", "Component attempted to identify as %s, but component_secret is not set", session.host);
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73 session:close("not-authorized");
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74 return true;
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75 end
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76
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77 local supplied_token = t_concat(stanza);
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78 local calculated_token = sha1(session.streamid..secret, true);
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79 if supplied_token:lower() ~= calculated_token:lower() then
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80 log("info", "Component authentication failed for %s", session.host);
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81 session:close{ condition = "not-authorized", text = "Given token does not match calculated token" };
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82 return true;
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83 end
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84
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85 -- Add session to sessions table
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86 sessions[session] = true;
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87 session.on_destroy = on_destroy;
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88 session.component_validate_from = module:get_option_boolean("validate_from_addresses", true);
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89 log("info", "Component successfully authenticated: %s", session.host);
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90 session.send(st.stanza("handshake"));
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91
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92 return true;
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93 end
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94
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95 module:hook("stanza/jabber:component:accept:handshake", handle_component_auth);