prosody
7cf44a5c0991
core/componentmanager.lua

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core/componentmanager.lua @ 1088:7cf44a5c0991

Merge with 0.4
author Matthew Wild <mwild1@gmail.com>
date Sat, 02 May 2009 17:03:48 +0100
parent 1066:0cb325970a50
child 1100:05d209ef9661
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rev   line source
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2c0b9e3c11c3 0.3->0.4
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1 -- Prosody IM v0.4
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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
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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 eventmanager = require "core.eventmanager";
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15 local modulemanager = require "core.modulemanager";
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16 local core_route_stanza = core_route_stanza;
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17 local jid_split = require "util.jid".split;
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18 local st = require "util.stanza";
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19 local hosts = hosts;
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20
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21 local pairs, type, tostring = pairs, type, tostring;
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22
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23 local components = {};
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24
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25 local disco_items = require "util.multitable".new();
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26 local NULL = {};
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27 require "core.discomanager".addDiscoItemsHandler("*host", function(reply, to, from, node)
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28 if #node == 0 and hosts[to] then
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29 for jid in pairs(disco_items:get(to) or NULL) do
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30 reply:tag("item", {jid = jid}):up();
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31 end
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32 return true;
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33 end
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34 end);
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35
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36 require "core.eventmanager".add_event_hook("server-starting", function () core_route_stanza = _G.core_route_stanza; end);
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37
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38 module "componentmanager"
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39
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40 local function default_component_handler(origin, stanza)
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41 log("warn", "Stanza being handled by default component, bouncing error");
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42 if stanza.attr.type ~= "error" then
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43 core_route_stanza(nil, st.error_reply(stanza, "wait", "service-unavailable", "Component unavailable"));
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44 end
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45 end
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47
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48 function load_enabled_components(config)
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49 local defined_hosts = config or configmanager.getconfig();
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50
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51 for host, host_config in pairs(defined_hosts) do
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52 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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53 hosts[host] = { type = "component", host = host, connected = false, s2sout = {} };
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54 components[host] = default_component_handler;
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55 local ok, err = modulemanager.load(host, host_config.core.component_module);
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56 if not ok then
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57 log("error", "Error loading %s component %s: %s", tostring(host_config.core.component_module), tostring(host), tostring(err));
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58 else
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59 log("info", "Activated %s component: %s", host_config.core.component_module, host);
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60 end
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61 end
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62 end
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63 end
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64
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65 eventmanager.add_event_hook("server-starting", load_enabled_components);
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66
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67 function handle_stanza(origin, stanza)
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68 local node, host = jid_split(stanza.attr.to);
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69 local component = nil;
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70 if not component then component = components[stanza.attr.to]; end -- hack to allow hooking node@server/resource and server/resource
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71 if not component then component = components[node.."@"..host]; end -- hack to allow hooking node@server
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72 if not component then component = components[host]; end
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73 if component then
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74 log("debug", "%s stanza being handled by component: %s", stanza.name, host);
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75 component(origin, stanza, hosts[host]);
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76 else
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77 log("error", "Component manager recieved a stanza for a non-existing component: " .. stanza.attr.to);
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78 end
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79 end
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80
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81 function create_component(host, component)
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82 -- TODO check for host well-formedness
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83 return { type = "component", host = host, connected = true, s2sout = {} };
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84 end
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85
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86 function register_component(host, component, session)
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87 if not hosts[host] or (hosts[host].type == 'component' and not hosts[host].connected) then
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88 components[host] = component;
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89 hosts[host] = session or create_component(host, component);
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90 -- add to disco_items
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91 if not(host:find("@", 1, true) or host:find("/", 1, true)) and host:find(".", 1, true) then
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92 disco_items:set(host:sub(host:find(".", 1, true)+1), host, true);
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93 end
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94 -- FIXME only load for a.b.c if b.c has dialback, and/or check in config
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95 modulemanager.load(host, "dialback");
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96 log("debug", "component added: "..host);
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97 return session or hosts[host];
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98 else
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99 log("error", "Attempt to set component for existing host: "..host);
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100 end
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101 end
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102
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103 function deregister_component(host)
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104 if components[host] then
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105 modulemanager.unload(host, "dialback");
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106 hosts[host].connected = nil;
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107 local host_config = configmanager.getconfig()[host];
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108 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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109 -- Set default handler
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110 components[host] = default_component_handler;
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111 else
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112 -- Component not in config, or disabled, remove
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113 hosts[host] = nil;
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114 components[host] = nil;
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115 end
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116 -- remove from disco_items
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117 if not(host:find("@", 1, true) or host:find("/", 1, true)) and host:find(".", 1, true) then
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118 disco_items:remove(host:sub(host:find(".", 1, true)+1), host);
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119 end
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120 log("debug", "component removed: "..host);
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121 return true;
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122 else
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123 log("error", "Attempt to remove component for non-existing host: "..host);
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124 end
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125 end
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126
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127 function set_component_handler(host, handler)
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128 components[host] = handler;
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129 end
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130
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131 return _M;