Software / code / prosody
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core/modulemanager.lua @ 39:89877d61ac51
Add support for arbitrary events and event hooks
| author | Matthew Wild <mwild1@gmail.com> |
|---|---|
| date | Fri, 03 Oct 2008 22:17:20 +0100 |
| parent | 38:3fdfd6e0cb4e |
| child | 42:2e3715e30912 |
| rev | line source |
|---|---|
| 30 | 1 |
| 2 local log = require "util.logger".init("modulemanager") | |
| 3 | |
| 4 local loadfile, pcall = loadfile, pcall; | |
| 5 local setmetatable, setfenv, getfenv = setmetatable, setfenv, getfenv; | |
| 6 local pairs, ipairs = pairs, ipairs; | |
|
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7 local t_insert = table.insert; |
| 30 | 8 local type = type; |
| 9 | |
| 10 local tostring, print = tostring, print; | |
| 11 | |
| 12 local _G = _G; | |
| 13 | |
| 14 module "modulemanager" | |
| 15 | |
| 16 local handler_info = {}; | |
| 17 local handlers = {}; | |
| 18 | |
| 19 local modulehelpers = setmetatable({}, { __index = _G }); | |
| 20 | |
| 21 function modulehelpers.add_iq_handler(origin_type, xmlns, handler) | |
| 22 handlers[origin_type] = handlers[origin_type] or {}; | |
| 23 handlers[origin_type].iq = handlers[origin_type].iq or {}; | |
| 24 if not handlers[origin_type].iq[xmlns] then | |
| 25 handlers[origin_type].iq[xmlns]= handler; | |
| 26 handler_info[handler] = getfenv(2).module; | |
| 38 | 27 log("debug", "mod_%s now handles tag 'iq' with query namespace '%s'", getfenv(2).module.name, xmlns); |
| 30 | 28 else |
| 38 | 29 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); |
| 30 | 30 end |
| 31 end | |
| 32 | |
| 38 | 33 function modulehelpers.add_handler(origin_type, tag, handler) |
| 34 handlers[origin_type] = handlers[origin_type] or {}; | |
| 35 if not handlers[origin_type][tag] then | |
| 36 handlers[origin_type][tag]= handler; | |
| 37 handler_info[handler] = getfenv(2).module; | |
| 38 log("debug", "mod_%s now handles tag '%s'", getfenv(2).module.name, tag); | |
| 39 elseif handler_info[handlers[origin_type][tag]] then | |
| 40 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); | |
| 41 end | |
| 30 | 42 end |
| 43 | |
| 44 function loadall() | |
| 38 | 45 load("saslauth"); |
| 30 | 46 load("legacyauth"); |
| 47 load("roster"); | |
| 48 end | |
| 49 | |
| 50 function load(name) | |
| 51 local mod, err = loadfile("plugins/mod_"..name..".lua"); | |
| 52 if not mod then | |
| 53 log("error", "Unable to load module '%s': %s", name or "nil", err or "nil"); | |
| 54 return; | |
| 55 end | |
| 56 | |
| 57 local pluginenv = setmetatable({ module = { name = name } }, { __index = modulehelpers }); | |
| 58 | |
| 59 setfenv(mod, pluginenv); | |
| 60 local success, ret = pcall(mod); | |
| 61 if not success then | |
| 62 log("error", "Error initialising module '%s': %s", name or "nil", ret or "nil"); | |
| 63 return; | |
| 64 end | |
| 65 end | |
| 66 | |
| 67 function handle_stanza(origin, stanza) | |
| 38 | 68 local name, xmlns, origin_type = stanza.name, stanza.attr.xmlns, origin.type; |
| 30 | 69 |
| 38 | 70 if name == "iq" and xmlns == "jabber:client" and handlers[origin_type] then |
| 30 | 71 log("debug", "Stanza is an <iq/>"); |
| 72 local child = stanza.tags[1]; | |
| 73 if child then | |
| 74 local xmlns = child.attr.xmlns; | |
| 75 log("debug", "Stanza has xmlns: %s", xmlns); | |
| 76 local handler = handlers[origin_type][name][xmlns]; | |
| 77 if handler then | |
| 78 log("debug", "Passing stanza to mod_%s", handler_info[handler].name); | |
| 79 return handler(origin, stanza) or true; | |
| 80 end | |
| 81 | |
| 82 end | |
| 38 | 83 --FIXME: All iq's must be replied to, here we should return service-unavailable I think |
| 84 elseif handlers[origin_type] then | |
| 85 local handler = handlers[origin_type][name]; | |
| 86 if handler then | |
| 87 log("debug", "Passing stanza to mod_%s", handler_info[handler].name); | |
| 88 return handler(origin, stanza) or true; | |
| 89 end | |
| 30 | 90 end |
| 91 log("debug", "Stanza unhandled by any modules"); | |
| 92 return false; -- we didn't handle it | |
| 93 end | |
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94 |
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95 do |
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96 local event_handlers = {}; |
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97 |
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98 function modulehelpers.add_event_hook(name, handler) |
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99 if not event_handlers[name] then |
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89877d61ac51
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parents:
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100 event_handlers[name] = {}; |
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101 end |
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102 t_insert(event_handlers[name] , handler); |
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103 end |
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104 |
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105 function fire_event(name, ...) |
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106 local event_handlers = event_handlers[name]; |
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89877d61ac51
Add support for arbitrary events and event hooks
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parents:
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107 if event_handlers then |
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89877d61ac51
Add support for arbitrary events and event hooks
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parents:
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108 for name, handler in ipairs(event_handlers) do |
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89877d61ac51
Add support for arbitrary events and event hooks
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parents:
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109 handler(...); |
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110 end |
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111 end |
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112 end |
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113 end |
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parents:
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114 |
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parents:
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115 return _M; |
