prosody
1ce02e2f5a3f
core/componentmanager.lua

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core/componentmanager.lua @ 1898:1ce02e2f5a3f

rostermanager: Fixed: Roster version was not being properly updated in some edge cases.
author Waqas Hussain <waqas20@gmail.com>
date Sun, 04 Oct 2009 21:34:17 +0500
parent 1851:0a4d4ba01db8
child 1853:5da0e3b1f847
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2009 Matthew Wild
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3 -- Copyright (C) 2008-2009 Waqas Hussain
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4 --
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b1885732e979 GPL->MIT!
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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
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11 local prosody = prosody;
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12 local log = require "util.logger".init("componentmanager");
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13 local configmanager = require "core.configmanager";
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14 local modulemanager = require "core.modulemanager";
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15 local core_route_stanza = core_route_stanza;
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16 local jid_split = require "util.jid".split;
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17 local fire_event = require "core.eventmanager".fire_event;
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18 local events_new = require "util.events".new;
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19 local st = require "util.stanza";
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20 local hosts = hosts;
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21 local serialize = require "util.serialization".serialize
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22
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23 local pairs, type, tostring = pairs, type, tostring;
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24
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25 local components = {};
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26
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27 local disco_items = require "util.multitable".new();
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28 local NULL = {};
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29 require "core.discomanager".addDiscoItemsHandler("*host", function(reply, to, from, node)
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30 if #node == 0 and hosts[to] then
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31 for jid in pairs(disco_items:get(to) or NULL) do
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32 reply:tag("item", {jid = jid}):up();
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33 end
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34 return true;
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35 end
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36 end);
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38 prosody.events.add_handler("server-starting", function () core_route_stanza = _G.core_route_stanza; end);
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40 module "componentmanager"
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41
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42 local function default_component_handler(origin, stanza)
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43 log("warn", "Stanza being handled by default component, bouncing error");
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44 if stanza.attr.type ~= "error" then
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45 core_route_stanza(nil, st.error_reply(stanza, "wait", "service-unavailable", "Component unavailable"));
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46 end
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47 end
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48
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49 local components_loaded_once;
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50 function load_enabled_components(config)
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51 local defined_hosts = config or configmanager.getconfig();
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52
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53 for host, host_config in pairs(defined_hosts) do
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54 if host ~= "*" and ((host_config.core.enabled == nil or host_config.core.enabled) and type(host_config.core.component_module) == "string") then
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55 hosts[host] = create_component(host);
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56 hosts[host].connected = false;
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57 components[host] = default_component_handler;
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58 local ok, err = modulemanager.load(host, host_config.core.component_module);
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59 if not ok then
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60 log("error", "Error loading %s component %s: %s", tostring(host_config.core.component_module), tostring(host), tostring(err));
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61 else
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62 fire_event("component-activated", host, host_config);
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63 log("debug", "Activated %s component: %s", host_config.core.component_module, host);
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64 end
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65 end
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66 end
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67 end
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68
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69 prosody.events.add_handler("server-starting", load_enabled_components);
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70
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71 function handle_stanza(origin, stanza)
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72 local node, host = jid_split(stanza.attr.to);
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73 local component = nil;
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74 if host then
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75 if node then component = components[node.."@"..host]; end -- hack to allow hooking node@server
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76 if not component then component = components[host]; end
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77 end
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78 if component then
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79 log("debug", "%s stanza being handled by component: %s", stanza.name, host);
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80 component(origin, stanza, hosts[host]);
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81 else
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82 log("error", "Component manager recieved a stanza for a non-existing component: " .. (stanza.attr.to or serialize(stanza)));
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83 end
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84 end
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85
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86 function create_component(host, component, events)
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87 -- TODO check for host well-formedness
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88 return { type = "component", host = host, connected = true, s2sout = {}, events = events or events_new() };
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89 end
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90
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91 function register_component(host, component, session)
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92 if not hosts[host] or (hosts[host].type == 'component' and not hosts[host].connected) then
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93 local old_events = hosts[host] and hosts[host].events;
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94
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95 components[host] = component;
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96 hosts[host] = session or create_component(host, component, old_events);
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97
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98 -- Add events object if not already one
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99 if not hosts[host].events then
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100 hosts[host].events = old_events or events_new();
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101 end
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102
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103 -- add to disco_items
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104 if not(host:find("@", 1, true) or host:find("/", 1, true)) and host:find(".", 1, true) then
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105 disco_items:set(host:sub(host:find(".", 1, true)+1), host, true);
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106 end
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107 -- FIXME only load for a.b.c if b.c has dialback, and/or check in config
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108 modulemanager.load(host, "dialback");
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109 log("debug", "component added: "..host);
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110 return session or hosts[host];
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111 else
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112 log("error", "Attempt to set component for existing host: "..host);
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113 end
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114 end
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115
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116 function deregister_component(host)
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117 if components[host] then
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118 modulemanager.unload(host, "dialback");
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119 hosts[host].connected = nil;
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120 local host_config = configmanager.getconfig()[host];
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121 if host_config and ((host_config.core.enabled == nil or host_config.core.enabled) and type(host_config.core.component_module) == "string") then
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122 -- Set default handler
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123 components[host] = default_component_handler;
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124 else
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125 -- Component not in config, or disabled, remove
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126 hosts[host] = nil;
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127 components[host] = nil;
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128 end
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129 -- remove from disco_items
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130 if not(host:find("@", 1, true) or host:find("/", 1, true)) and host:find(".", 1, true) then
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131 disco_items:remove(host:sub(host:find(".", 1, true)+1), host);
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132 end
673
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133 log("debug", "component removed: "..host);
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134 return true;
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135 else
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136 log("error", "Attempt to remove component for non-existing host: "..host);
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137 end
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138 end
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139
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140 function set_component_handler(host, handler)
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141 components[host] = handler;
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142 end
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143
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144 return _M;