Annotate

core/modulemanager.lua @ 196:ebe23269b377

Fix for add_iq_handler to allow multiple origin types too
author Matthew Wild <mwild1@gmail.com>
date Sun, 02 Nov 2008 01:26:37 +0000
parent 191:e64c8a44060f
child 197:19c57a24afa1
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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 t_insert = table.insert;
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8 local type = type;
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10 local tostring, print = tostring, print;
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12 local _G = _G;
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14 module "modulemanager"
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16 local handler_info = {};
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17 local handlers = {};
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19 local modulehelpers = setmetatable({}, { __index = _G });
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21 local function _add_iq_handler(module, origin_type, xmlns, handler)
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22 handlers[origin_type] = handlers[origin_type] or {};
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23 handlers[origin_type].iq = handlers[origin_type].iq or {};
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24 if not handlers[origin_type].iq[xmlns] then
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25 handlers[origin_type].iq[xmlns]= handler;
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26 handler_info[handler] = module;
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27 log("debug", "mod_%s now handles tag 'iq' with query namespace '%s'", module.name, xmlns);
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28 else
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29 log("warning", "mod_%s wants to handle tag 'iq' with query namespace '%s' but mod_%s already handles that", module.name, xmlns, handler_info[handlers[origin_type].iq[xmlns]].module.name);
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30 end
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31 end
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33 function modulehelpers.add_iq_handler(origin_type, xmlns, handler)
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34 if not (origin_type and handler and xmlns) then return false; end
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35 if type(origin_type) == "table" then
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36 for _, origin_type in ipairs(origin_type) do
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37 _add_iq_handler(getfenv(2), origin_type, xmlns, handler);
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38 end
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39 return;
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40 end
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41 _add_iq_handler(getfenv(2), origin_type, xmlns, handler);
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42 end
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43
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44 local function _add_handler(module, origin_type, tag, xmlns, handler)
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45 handlers[origin_type] = handlers[origin_type] or {};
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46 if not handlers[origin_type][tag] then
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47 handlers[origin_type][tag] = handlers[origin_type][tag] or {};
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48 handlers[origin_type][tag][xmlns]= handler;
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49 handler_info[handler] = module;
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50 log("debug", "mod_%s now handles tag '%s'", module.name, tag);
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51 elseif handler_info[handlers[origin_type][tag]] then
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52 log("warning", "mod_%s wants to handle tag '%s' but mod_%s already handles that", module.name, tag, handler_info[handlers[origin_type][tag]].module.name);
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53 end
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54 end
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56 function modulehelpers.add_handler(origin_type, tag, xmlns, handler)
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57 if not (origin_type and tag and xmlns and handler) then return false; end
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58 if type(origin_type) == "table" then
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59 for _, origin_type in ipairs(origin_type) do
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60 _add_handler(getfenv(2).module, origin_type, tag, xmlns, handler);
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61 end
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62 return;
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63 end
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64 _add_handler(getfenv(2).module, origin_type, tag, xmlns, handler);
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65 end
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66
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67 function loadall()
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68 load("saslauth");
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69 load("legacyauth");
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70 load("roster");
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71 load("register");
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72 load("tls");
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73 load("vcard");
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74 load("private");
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75 load("version");
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76 load("dialback");
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77 end
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79 function load(name)
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80 local mod, err = loadfile("plugins/mod_"..name..".lua");
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81 if not mod then
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82 log("error", "Unable to load module '%s': %s", name or "nil", err or "nil");
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83 return;
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84 end
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86 local pluginenv = setmetatable({ module = { name = name } }, { __index = modulehelpers });
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87
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88 setfenv(mod, pluginenv);
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89 local success, ret = pcall(mod);
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90 if not success then
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91 log("error", "Error initialising module '%s': %s", name or "nil", ret or "nil");
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92 return;
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93 end
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94 end
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95
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96 function handle_stanza(origin, stanza)
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97 local name, xmlns, origin_type = stanza.name, stanza.attr.xmlns, origin.type;
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98
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99 if name == "iq" and xmlns == "jabber:client" and handlers[origin_type] then
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100 log("debug", "Stanza is an <iq/>");
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101 local child = stanza.tags[1];
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102 if child then
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103 local xmlns = child.attr.xmlns;
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104 log("debug", "Stanza has xmlns: %s", xmlns);
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105 local handler = handlers[origin_type][name][xmlns];
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106 if handler then
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107 log("debug", "Passing stanza to mod_%s", handler_info[handler].name);
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108 return handler(origin, stanza) or true;
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109 end
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110
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111 end
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112 elseif handlers[origin_type] then
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113 local handler = handlers[origin_type][name];
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114 if handler then
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115 handler = handler[xmlns];
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116 if handler then
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117 log("debug", "Passing stanza to mod_%s", handler_info[handler].name);
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118 return handler(origin, stanza) or true;
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119 end
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120 end
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121 end
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122 log("debug", "Stanza unhandled by any modules, xmlns: %s", stanza.attr.xmlns);
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123 return false; -- we didn't handle it
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124 end
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125
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126 do
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127 local event_handlers = {};
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128
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129 function modulehelpers.add_event_hook(name, handler)
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130 if not event_handlers[name] then
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131 event_handlers[name] = {};
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132 end
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133 t_insert(event_handlers[name] , handler);
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134 end
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135
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136 function fire_event(name, ...)
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137 local event_handlers = event_handlers[name];
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138 if event_handlers then
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139 for name, handler in ipairs(event_handlers) do
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140 handler(...);
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141 end
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142 end
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143 end
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144 end
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145
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146 return _M;