aboutsummaryrefslogtreecommitdiffstats
path: root/core/hostmanager.lua
blob: 52f494b5a85e5b64a109e8754b30cf982acd8735 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
-- Prosody IM
-- Copyright (C) 2008-2010 Matthew Wild
-- Copyright (C) 2008-2010 Waqas Hussain
-- 
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--

local configmanager = require "core.configmanager";
local modulemanager = require "core.modulemanager";
local events_new = require "util.events".new;
local disco_items = require "util.multitable".new();
local NULL = {};

local jid_split = require "util.jid".split;
local uuid_gen = require "util.uuid".generate;

local log = require "util.logger".init("hostmanager");

local hosts = hosts;
local prosody_events = prosody.events;
if not _G.prosody.incoming_s2s then
	require "core.s2smanager";
end
local incoming_s2s = _G.prosody.incoming_s2s;
local core_route_stanza = _G.prosody.core_route_stanza;

local pairs, select = pairs, select;
local tostring, type = tostring, type;

module "hostmanager"

local hosts_loaded_once;

local function load_enabled_hosts(config)
	local defined_hosts = config or configmanager.getconfig();
	local activated_any_host;
	
	for host, host_config in pairs(defined_hosts) do
		if host ~= "*" and host_config.enabled ~= false then
			if not host_config.component_module then
				activated_any_host = true;
			end
			activate(host, host_config);
		end
	end
	
	if not activated_any_host then
		log("error", "No active VirtualHost entries in the config file. This may cause unexpected behaviour as no modules will be loaded.");
	end
	
	prosody_events.fire_event("hosts-activated", defined_hosts);
	hosts_loaded_once = true;
end

prosody_events.add_handler("server-starting", load_enabled_hosts);

local function host_send(stanza)
	local name, type = stanza.name, stanza.attr.type;
	if type == "error" or (name == "iq" and type == "result") then
		local dest_host_name = select(2, jid_split(stanza.attr.to));
		local dest_host = hosts[dest_host_name] or { type = "unknown" };
		log("warn", "Unhandled response sent to %s host %s: %s", dest_host.type, dest_host_name, tostring(stanza));
		return;
	end
	core_route_stanza(nil, stanza);
end

function activate(host, host_config)
	if hosts[host] then return nil, "The host "..host.." is already activated"; end
	host_config = host_config or configmanager.getconfig()[host];
	if not host_config then return nil, "Couldn't find the host "..tostring(host).." defined in the current config"; end
	local host_session = {
		host = host;
		s2sout = {};
		events = events_new();
		dialback_secret = configmanager.get(host, "core", "dialback_secret") or uuid_gen();
		send = host_send;
		modules = {};
	};
	if not host_config.component_module then -- host
		host_session.type = "local";
		host_session.sessions = {};
	else -- component
		host_session.type = "component";
	end
	hosts[host] = host_session;
	if not host:match("[@/]") then
		disco_items:set(host:match("%.(.*)") or "*", host, host_config.name or true);
	end
	for option_name in pairs(host_config) do
		if option_name:match("_ports$") or option_name:match("_interface$") then
			log("warn", "%s: Option '%s' has no effect for virtual hosts - put it in the server-wide section instead", host, option_name);
		end
	end
	
	log((hosts_loaded_once and "info") or "debug", "Activated host: %s", host);
	prosody_events.fire_event("host-activated", host);
	return true;
end

function deactivate(host, reason)
	local host_session = hosts[host];
	if not host_session then return nil, "The host "..tostring(host).." is not activated"; end
	log("info", "Deactivating host: %s", host);
	prosody_events.fire_event("host-deactivating", { host = host, host_session = host_session, reason = reason });
	
	if type(reason) ~= "table" then
		reason = { condition = "host-gone", text = tostring(reason or "This server has stopped serving "..host) };
	end
	
	-- Disconnect local users, s2s connections
	-- TODO: These should move to mod_c2s and mod_s2s (how do they know they're being unloaded and not reloaded?)
	if host_session.sessions then
		for username, user in pairs(host_session.sessions) do
			for resource, session in pairs(user.sessions) do
				log("debug", "Closing connection for %s@%s/%s", username, host, resource);
				session:close(reason);
			end
		end
	end
	if host_session.s2sout then
		for remotehost, session in pairs(host_session.s2sout) do
			if session.close then
				log("debug", "Closing outgoing connection to %s", remotehost);
				if session.srv_hosts then session.srv_hosts = nil; end
				session:close(reason);
			end
		end
	end
	for remote_session in pairs(incoming_s2s) do
		if remote_session.to_host == host then
			log("debug", "Closing incoming connection from %s", remote_session.from_host or "<unknown>");
			remote_session:close(reason);
		end
	end

	-- TODO: This should be done in modulemanager
	if host_session.modules then
		for module in pairs(host_session.modules) do
			modulemanager.unload(host, module);
		end
	end

	hosts[host] = nil;
	if not host:match("[@/]") then
		disco_items:remove(host:match("%.(.*)") or "*", host);
	end
	prosody_events.fire_event("host-deactivated", host);
	log("info", "Deactivated host: %s", host);
	return true;
end

function get_children(host)
	return disco_items:get(host) or NULL;
end

return _M;