prosody
fa71261d8a15
core/componentmanager.lua

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core/componentmanager.lua @ 2002:fa71261d8a15

mod_vcard: Refactoring and cleanup.
author Waqas Hussain <waqas20@gmail.com>
date Sun, 18 Oct 2009 07:30:58 +0500
parent 1992:bbaba17537a9
child 2075:b4bfa6cb3d83
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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diff changeset
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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cccd610a0ef9 Insert copyright/license headers
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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 local prosody = _G.prosody;
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10 local log = require "util.logger".init("componentmanager");
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11 local configmanager = require "core.configmanager";
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12 local modulemanager = require "core.modulemanager";
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13 local jid_split = require "util.jid".split;
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14 local fire_event = require "core.eventmanager".fire_event;
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15 local events_new = require "util.events".new;
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16 local st = require "util.stanza";
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17 local hosts = hosts;
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18
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19 local pairs, type, tostring = pairs, type, tostring;
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20
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21 local components = {};
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22
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23 local disco_items = require "util.multitable".new();
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24 local NULL = {};
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25
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26 module "componentmanager"
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27
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28 local function default_component_handler(origin, stanza)
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29 log("warn", "Stanza being handled by default component, bouncing error");
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30 if stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then
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53bd9c9f3103 ComponentManager: Removed dependency on core_route_stanza. The default component handler now replies using origin.send().
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31 origin.send(st.error_reply(stanza, "wait", "service-unavailable", "Component unavailable"));
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32 end
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33 end
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34
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35 function load_enabled_components(config)
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36 local defined_hosts = config or configmanager.getconfig();
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37
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38 for host, host_config in pairs(defined_hosts) do
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39 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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40 hosts[host] = create_component(host);
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41 hosts[host].connected = false;
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42 components[host] = default_component_handler;
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43 local ok, err = modulemanager.load(host, host_config.core.component_module);
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44 if not ok then
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45 log("error", "Error loading %s component %s: %s", tostring(host_config.core.component_module), tostring(host), tostring(err));
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46 else
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47 fire_event("component-activated", host, host_config);
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48 log("debug", "Activated %s component: %s", host_config.core.component_module, host);
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49 end
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50 end
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51 end
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52 end
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53
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54 if prosody and prosody.events then
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55 prosody.events.add_handler("server-starting", load_enabled_components);
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56 end
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57
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58 function handle_stanza(origin, stanza)
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59 local node, host = jid_split(stanza.attr.to);
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60 local component = nil;
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61 if host then
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62 if node then component = components[node.."@"..host]; end -- hack to allow hooking node@server
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63 if not component then component = components[host]; end
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64 end
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65 if component then
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66 log("debug", "%s stanza being handled by component: %s", stanza.name, host);
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67 component(origin, stanza, hosts[host]);
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68 else
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69 log("error", "Component manager recieved a stanza for a non-existing component: "..tostring(stanza));
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70 default_component_handler(origin, stanza);
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71 end
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72 end
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73
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74 function create_component(host, component, events)
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75 -- TODO check for host well-formedness
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76 local ssl_ctx;
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77 if host then
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78 -- We need to find SSL context to use...
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79 -- Discussion in prosody@ concluded that
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80 -- 1 level back is usually enough by default
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81 local base_host = host:gsub("^[^%.]+%.", "");
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82 if hosts[base_host] then
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83 ssl_ctx = hosts[base_host].ssl_ctx;
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84 end
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85 end
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86 return { type = "component", host = host, connected = true, s2sout = {},
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87 ssl_ctx = ssl_ctx, events = events or events_new() };
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88 end
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89
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90 function register_component(host, component, session)
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91 if not hosts[host] or (hosts[host].type == 'component' and not hosts[host].connected) then
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92 local old_events = hosts[host] and hosts[host].events;
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93
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94 components[host] = component;
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95 hosts[host] = session or create_component(host, component, old_events);
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96
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97 -- Add events object if not already one
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98 if not hosts[host].events then
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99 hosts[host].events = old_events or events_new();
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100 end
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101
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102 -- add to disco_items
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103 if not(host:find("@", 1, true) or host:find("/", 1, true)) and host:find(".", 1, true) then
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104 disco_items:set(host:sub(host:find(".", 1, true)+1), host, true);
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105 end
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106 modulemanager.load(host, "dialback");
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107 modulemanager.load(host, "tls");
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108 log("debug", "component added: "..host);
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109 return session or hosts[host];
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110 else
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111 log("error", "Attempt to set component for existing host: "..host);
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112 end
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113 end
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114
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115 function deregister_component(host)
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116 if components[host] then
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117 modulemanager.unload(host, "tls");
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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; -- FIXME do proper unload of all modules and other cleanup before removing
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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
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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 function get_children(host)
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145 return disco_items:get(host) or NULL;
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146 end
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147
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148 return _M;