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annotate mod_component_guard/mod_component_guard.lua @ 460:9bb9343f3c7a

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mod_component_guard: made module global, refactored init.
author Marco Cirillo <maranda@lightwitch.org>
date Mon, 24 Oct 2011 00:20:51 +0000
parents 3117d7e207c5
children
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1 -- Block or restrict by blacklist remote access to local components.
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2
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3 module:set_global()
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4
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5 local guard_blockall = module:get_option_set("component_guard_blockall", {})
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6 local guard_protect = module:get_option_set("component_guard_components", {})
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7 local guard_block_bl = module:get_option_set("component_guard_blacklist", {})
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8
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9 local s2smanager = require "core.s2smanager";
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10 local config = require "core.configmanager";
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11 local nameprep = require "util.encodings".stringprep.nameprep;
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12
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13 local _make_connect = s2smanager.make_connect;
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14 function s2smanager.make_connect(session, connect_host, connect_port)
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15 if not session.s2sValidation then
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16 if guard_blockall:contains(session.from_host) or
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17 guard_block_bl:contains(session.to_host) and guard_protect:contains(session.from_host) then
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18 module:log("error", "remote service %s attempted to access restricted component %s", session.to_host, session.from_host);
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19 s2smanager.destroy_session(session, "You're not authorized, good bye.");
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20 return false;
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21 end
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22 end
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23 return _make_connect(session, connect_host, connect_port);
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24 end
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25
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26 local _stream_opened = s2smanager.streamopened;
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27 function s2smanager.streamopened(session, attr)
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28 local host = attr.to and nameprep(attr.to);
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29 local from = attr.from and nameprep(attr.from);
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30 if not from then
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31 session.s2sValidation = false;
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32 else
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33 session.s2sValidation = true;
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34 end
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35
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36 if guard_blockall:contains(host) or
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37 guard_block_bl:contains(from) and guard_protect:contains(host) then
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38 module:log("error", "remote service %s attempted to access restricted component %s", from, host);
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39 session:close({condition = "policy-violation", text = "You're not authorized, good bye."});
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40 return false;
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41 end
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42 _stream_opened(session, attr);
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43 end
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44
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45 local function sdr_hook (event)
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46 local origin, stanza = event.origin, event.stanza;
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47
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48 if origin.type == "s2sin" or origin.type == "s2sin_unauthed" then
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49 if guard_blockall:contains(stanza.attr.to) or
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50 guard_block_bl:contains(stanza.attr.from) and guard_protect:contains(stanza.attr.to) then
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51 module:log("error", "remote service %s attempted to access restricted component %s", stanza.attr.from, stanza.attr.to);
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52 origin:close({condition = "policy-violation", text = "You're not authorized, good bye."});
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53 return false;
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54 end
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55 end
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56
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57 return nil;
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58 end
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59
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60 local function handle_activation (host)
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61 if guard_blockall:contains(host) or guard_protect:contains(host) then
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62 if hosts[host] and hosts[host].events then
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63 hosts[host].events.add_handler("stanza/jabber:server:dialback:result", sdr_hook, 100);
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64 module:log ("debug", "adding component protection for: "..host);
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65 end
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66 end
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67 end
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68
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69 local function handle_deactivation (host)
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70 if guard_blockall:contains(host) or guard_protect:contains(host) then
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71 if hosts[host] and hosts[host].events then
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72 hosts[host].events.remove_handler("stanza/jabber:server:dialback:result", sdr_hook);
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73 module:log ("debug", "removing component protection for: "..host);
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74 end
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75 end
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76 end
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77
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78 local function reload()
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79 module:log ("debug", "server configuration reloaded, rehashing plugin tables...");
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80 guard_blockall = module:get_option_set("component_guard_blockall");
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81 guard_protect = module:get_option_set("component_guard_components");
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82 guard_block_bl = module:get_option_set("component_guard_blacklist");
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83 end
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84
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85 local function setup()
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86 module:log ("debug", "initializing component guard module...");
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87
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88 module:hook ("component-activated", handle_activation);
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89 module:hook ("component-deactivated", handle_deactivation);
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90 module:hook ("config-reloaded", reload);
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91
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92 for n,table in pairs(hosts) do
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93 if table.type == "component" then
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94 if guard_blockall:contains(n) or guard_protect:contains(n) then
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95 hosts[n].events.remove_handler("stanza/jabber:server:dialback:result", sdr_hook);
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96 handle_activation(n);
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97 end
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98 end
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99 end
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100 end
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101
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102 if prosody.start_time then
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103 setup();
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104 else
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105 prosody.events.add_handler("server-started", setup);
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106 end