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https://github.com/bjc/prosody.git
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100 lines
3.3 KiB
Lua
100 lines
3.3 KiB
Lua
-- Prosody IM
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-- Copyright (C) 2008-2010 Matthew Wild
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-- Copyright (C) 2008-2010 Waqas Hussain
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--
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-- This project is MIT/X11 licensed. Please see the
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-- COPYING file in the source package for more information.
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--
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if module:get_host_type() ~= "component" then
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error("Don't load mod_component manually, it should be for a component, please see http://prosody.im/doc/components", 0);
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end
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local hosts = _G.hosts;
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local t_concat = table.concat;
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local sha1 = require "util.hashes".sha1;
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local st = require "util.stanza";
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local log = module._log;
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local main_session, send;
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local function on_destroy(session, err)
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if main_session == session then
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main_session = nil;
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send = nil;
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session.on_destroy = nil;
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end
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end
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local function handle_stanza(event)
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local stanza = event.stanza;
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if send then
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stanza.attr.xmlns = nil;
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send(stanza);
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else
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log("warn", "Stanza being handled by default component; bouncing error for: %s", stanza:top_tag());
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if stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then
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event.origin.send(st.error_reply(stanza, "wait", "service-unavailable", "Component unavailable"));
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end
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end
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return true;
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end
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module:hook("iq/bare", handle_stanza, -1);
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module:hook("message/bare", handle_stanza, -1);
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module:hook("presence/bare", handle_stanza, -1);
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module:hook("iq/full", handle_stanza, -1);
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module:hook("message/full", handle_stanza, -1);
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module:hook("presence/full", handle_stanza, -1);
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module:hook("iq/host", handle_stanza, -1);
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module:hook("message/host", handle_stanza, -1);
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module:hook("presence/host", handle_stanza, -1);
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--- Handle authentication attempts by components
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function handle_component_auth(event)
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local session, stanza = event.origin, event.stanza;
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if session.type ~= "component" then return; end
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if main_session == session then return; end
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if (not session.host) or #stanza.tags > 0 then
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(session.log or log)("warn", "Invalid component handshake for host: %s", session.host);
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session:close("not-authorized");
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return true;
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end
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local secret = module:get_option("component_secret");
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if not secret then
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(session.log or log)("warn", "Component attempted to identify as %s, but component_secret is not set", session.host);
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session:close("not-authorized");
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return true;
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end
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local supplied_token = t_concat(stanza);
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local calculated_token = sha1(session.streamid..secret, true);
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if supplied_token:lower() ~= calculated_token:lower() then
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log("info", "Component authentication failed for %s", session.host);
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session:close{ condition = "not-authorized", text = "Given token does not match calculated token" };
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return true;
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end
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-- If component not already created for this host, create one now
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if not main_session then
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send = session.send;
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main_session = session;
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session.on_destroy = on_destroy;
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session.component_validate_from = module:get_option_boolean("validate_from_addresses") ~= false;
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log("info", "Component successfully authenticated: %s", session.host);
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session.send(st.stanza("handshake"));
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else -- TODO: Implement stanza distribution
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log("error", "Multiple components bound to the same address, first one wins: %s", session.host);
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session:close{ condition = "conflict", text = "Component already connected" };
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end
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return true;
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end
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module:hook("stanza/jabber:component:accept:handshake", handle_component_auth);
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