prosody-modules
03ef667c96c3
mod_host_guard/mod_host_guard.lua

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mod_host_guard/mod_host_guard.lua @ 681:03ef667c96c3

mod_host_guard: removed s2smanager import.
author Marco Cirillo <maranda@lightwitch.org>
date Sat, 26 May 2012 22:48:03 +0000
parent 680:a2cea070f2c7
child 682:3ab1cf30a848
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b1b80319bbf6 mod_host_guard: renamed mod_component_guard to mod_host_guard, as it really works with all hosts, finally decided to wiki it out and not merge it with the s2s_blackwhitelisting module.
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1 -- (C) 2011, Marco Cirillo (LW.Org)
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2 -- Block or restrict by blacklist remote access to local components or hosts.
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3
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4 module:set_global()
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5
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6 local guard_blockall = module:get_option_set("host_guard_blockall", {})
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7 local guard_ball_wl = module:get_option_set("host_guard_blockall_exceptions", {})
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8 local guard_protect = module:get_option_set("host_guard_selective", {})
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9 local guard_block_bl = module:get_option_set("host_guard_blacklist", {})
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11 local config = require "core.configmanager"
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12 local nameprep = require "util.encodings".stringprep.nameprep
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13
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14 local function s2s_hook (event)
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15 local origin, stanza = event.session or event.origin, event.stanza or false
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16 local to_host, from_host = (not stanza and origin.to_host) or stanza.attr.to, (not stanza and origin.from_host) or stanza.attr.from
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18 if origin.type == "s2sin" or origin.type == "s2sin_unauthed" then
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19 if guard_blockall:contains(to_host) and not guard_ball_wl:contains(from_host) or
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20 guard_block_bl:contains(from_host) and guard_protect:contains(to_host) then
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21 module:log("error", "remote service %s attempted to access restricted host %s", stanza.attr.from, stanza.attr.to)
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22 origin:close({condition = "policy-violation", text = "You're not authorized, good bye."})
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23 return false
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24 end
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25 end
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26
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27 return nil
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28 end
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30 local function handle_activation (host)
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31 if guard_blockall:contains(host) or guard_protect:contains(host) then
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32 if hosts[host] and hosts[host].events then
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33 hosts[host].events.add_handler("s2sin-established", s2s_hook, 500)
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34 hosts[host].events.add_handler("stanza/jabber:server:dialback:result", s2s_hook, 500)
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35 module:log ("debug", "adding host protection for: "..host)
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36 end
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37 end
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38 end
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39
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40 local function handle_deactivation (host)
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41 if guard_blockall:contains(host) or guard_protect:contains(host) then
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42 if hosts[host] and hosts[host].events then
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43 hosts[host].events.remove_handler("s2sin-established", s2s_hook)
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44 hosts[host].events.remove_handler("stanza/jabber:server:dialback:result", s2s_hook)
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45 module:log ("debug", "removing host protection for: "..host)
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46 end
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47 end
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48 end
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49
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50 local function init_hosts()
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51 for n,table in pairs(hosts) do
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52 hosts[n].events.remove_handler("s2sin-established", s2s_hook)
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53 hosts[n].events.remove_handler("stanza/jabber:server:dialback:result", s2s_hook)
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54 if guard_blockall:contains(n) or guard_protect:contains(n) then handle_activation(n) end
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55 end
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56 end
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57
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58 local function reload()
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59 module:log ("debug", "server configuration reloaded, rehashing plugin tables...")
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60 guard_blockall = module:get_option_set("host_guard_blockall", {})
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61 guard_ball_wl = module:get_option_set("host_guard_blockall_exceptions", {})
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62 guard_protect = module:get_option_set("host_guard_selective", {})
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63 guard_block_bl = module:get_option_set("host_guard_blacklist", {})
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64
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65 init_hosts()
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66 end
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68 local function setup()
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69 module:log ("debug", "initializing host guard module...")
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70 module:hook ("host-activated", handle_activation)
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71 module:hook ("host-deactivated", handle_deactivation)
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72 module:hook ("config-reloaded", reload)
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73
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74 init_hosts()
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75 end
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77 if prosody.start_time then
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78 setup()
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79 else
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80 module:hook ("server-started", setup)
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81 end