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core/modulemanager.lua @ 38:3fdfd6e0cb4e

SASL! (but before you get too excited, no resource binding yet. And yes, there are still plenty of rough edges to the code...) ((eg. must move <stream:features> out of xmlhandlers.lua o_O ))
author Matthew Wild <mwild1@gmail.com>
date Thu, 02 Oct 2008 01:08:58 +0100
parent 30:bcf539295f2d
child 39:89877d61ac51
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2 local log = require "util.logger".init("modulemanager")
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4 local loadfile, pcall = loadfile, pcall;
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5 local setmetatable, setfenv, getfenv = setmetatable, setfenv, getfenv;
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6 local pairs, ipairs = pairs, ipairs;
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7 local type = type;
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9 local tostring, print = tostring, print;
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11 local _G = _G;
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13 module "modulemanager"
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15 local handler_info = {};
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16 local handlers = {};
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18 local modulehelpers = setmetatable({}, { __index = _G });
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20 function modulehelpers.add_iq_handler(origin_type, xmlns, handler)
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21 handlers[origin_type] = handlers[origin_type] or {};
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22 handlers[origin_type].iq = handlers[origin_type].iq or {};
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23 if not handlers[origin_type].iq[xmlns] then
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24 handlers[origin_type].iq[xmlns]= handler;
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25 handler_info[handler] = getfenv(2).module;
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26 log("debug", "mod_%s now handles tag 'iq' with query namespace '%s'", getfenv(2).module.name, xmlns);
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27 else
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28 log("warning", "mod_%s wants to handle tag 'iq' with query namespace '%s' but mod_%s already handles that", getfenv(2).module.name, xmlns, handler_info[handlers[origin_type].iq[xmlns]].module.name);
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29 end
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30 end
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32 function modulehelpers.add_handler(origin_type, tag, handler)
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33 handlers[origin_type] = handlers[origin_type] or {};
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34 if not handlers[origin_type][tag] then
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35 handlers[origin_type][tag]= handler;
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36 handler_info[handler] = getfenv(2).module;
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37 log("debug", "mod_%s now handles tag '%s'", getfenv(2).module.name, tag);
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38 elseif handler_info[handlers[origin_type][tag]] then
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39 log("warning", "mod_%s wants to handle tag '%s' but mod_%s already handles that", getfenv(2).module.name, tag, handler_info[handlers[origin_type][tag]].module.name);
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40 end
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41 end
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43 function loadall()
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44 load("saslauth");
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45 load("legacyauth");
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46 load("roster");
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47 end
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48
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49 function load(name)
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50 local mod, err = loadfile("plugins/mod_"..name..".lua");
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51 if not mod then
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52 log("error", "Unable to load module '%s': %s", name or "nil", err or "nil");
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53 return;
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54 end
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56 local pluginenv = setmetatable({ module = { name = name } }, { __index = modulehelpers });
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58 setfenv(mod, pluginenv);
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59 local success, ret = pcall(mod);
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60 if not success then
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61 log("error", "Error initialising module '%s': %s", name or "nil", ret or "nil");
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62 return;
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63 end
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64 end
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66 function handle_stanza(origin, stanza)
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67 local name, xmlns, origin_type = stanza.name, stanza.attr.xmlns, origin.type;
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68
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69 if name == "iq" and xmlns == "jabber:client" and handlers[origin_type] then
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70 log("debug", "Stanza is an <iq/>");
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71 local child = stanza.tags[1];
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72 if child then
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73 local xmlns = child.attr.xmlns;
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74 log("debug", "Stanza has xmlns: %s", xmlns);
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75 local handler = handlers[origin_type][name][xmlns];
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76 if handler then
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77 log("debug", "Passing stanza to mod_%s", handler_info[handler].name);
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78 return handler(origin, stanza) or true;
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79 end
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81 end
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82 --FIXME: All iq's must be replied to, here we should return service-unavailable I think
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83 elseif handlers[origin_type] then
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84 local handler = handlers[origin_type][name];
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85 if handler then
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86 log("debug", "Passing stanza to mod_%s", handler_info[handler].name);
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87 return handler(origin, stanza) or true;
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88 end
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89 end
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90 log("debug", "Stanza unhandled by any modules");
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91 return false; -- we didn't handle it
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92 end