Mercurial > prosody-modules
annotate mod_host_guard/mod_host_guard.lua @ 1885:b42eb10dc7d2
mod_openid/README: Convert raw HTML to emphasis
author | Kim Alvefur <zash@zash.se> |
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date | Thu, 01 Oct 2015 16:58:12 +0200 |
parents | 7dbde05b48a9 |
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493
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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 |
460
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4 module:set_global() |
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5 |
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6 local hosts = hosts |
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7 local incoming_s2s = prosody.incoming_s2s |
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8 |
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9 local guard_blockall = module:get_option_set("host_guard_blockall", {}) |
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10 local guard_ball_wl = module:get_option_set("host_guard_blockall_exceptions", {}) |
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11 local guard_protect = module:get_option_set("host_guard_selective", {}) |
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12 local guard_block_bl = module:get_option_set("host_guard_blacklist", {}) |
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13 |
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14 local config = configmanager |
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15 local error_reply = require "util.stanza".error_reply |
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16 local tostring = tostring |
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17 |
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18 local function s2s_hook (event) |
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19 local origin, stanza = event.session or event.origin, event.stanza or false |
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20 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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21 |
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22 if origin.type == "s2sin" or origin.type == "s2sin_unauthed" then |
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23 if guard_blockall:contains(to_host) and not guard_ball_wl:contains(from_host) or |
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24 guard_block_bl:contains(from_host) and guard_protect:contains(to_host) then |
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25 module:log("error", "remote service %s attempted to access restricted host %s", from_host, to_host) |
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26 origin:close({condition = "policy-violation", text = "You're not authorized, good bye."}) |
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27 return false |
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28 end |
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29 end |
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30 |
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31 return nil |
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32 end |
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33 |
682
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34 local function rr_hook (event) |
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35 local from_host, to_host, send, stanza = event.from_host, event.to_host, (event.origin and event.origin.send) or function() end, event.stanza |
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36 |
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37 if guard_blockall:contains(from_host) and not guard_ball_wl:contains(to_host) or |
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38 guard_block_bl:contains(to_host) and guard_protect:contains(from_host) then |
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39 module:log("info", "attempted to connect to a filtered remote host %s", to_host) |
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40 if stanza.attr.type ~= "error" then send(error_reply(event.stanza, "cancel", "policy-violation", "Communicating with a filtered remote server is not allowed.")) end |
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41 return true |
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42 end |
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43 |
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44 return nil |
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45 end |
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46 |
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47 local function handle_activation (host, u) |
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48 if guard_blockall:contains(host) or guard_protect:contains(host) then |
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49 if hosts[host] and config.get(host, "core", "authentication") ~= "anonymous" then |
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50 hosts[host].events.add_handler("s2sin-established", s2s_hook, 500) |
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51 hosts[host].events.add_handler("route/remote", rr_hook, 500) |
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52 hosts[host].events.add_handler("stanza/jabber:server:dialback:result", s2s_hook, 500) |
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53 if not u then |
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54 module:log ("debug", "adding host protection for: "..host) |
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55 else |
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56 module:log ("debug", "updating or adding host protection for: "..host) |
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57 end |
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58 end |
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59 end |
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60 end |
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61 |
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62 local function handle_deactivation (host, u, i) |
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63 if guard_blockall:contains(host) or guard_protect:contains(host) then |
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64 if hosts[host] and config.get(host, "core", "authentication") ~= "anonymous" then |
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65 hosts[host].events.remove_handler("s2sin-established", s2s_hook) |
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66 hosts[host].events.remove_handler("route/remote", rr_hook) |
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67 hosts[host].events.remove_handler("stanza/jabber:server:dialback:result", s2s_hook) |
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68 if not u and not i then module:log ("debug", "removing host protection for: "..host) end |
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69 end |
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70 end |
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71 end |
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72 |
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73 local function close_filtered() |
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74 for _, host in pairs(hosts) do |
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75 for name, session in pairs(host.s2sout) do |
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76 if guard_blockall:contains(session.host) and not guard_ball_wl:contains(session.to_host) or |
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77 guard_block_bl:contains(session.to_host) and guard_protect:contains(session.host) then |
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78 module:log("info", "closing down s2s outgoing stream to filtered entity %s", tostring(session.to_host)) |
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79 session:close() |
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80 end |
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81 end |
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82 end |
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83 for session in pairs(incoming_s2s) do |
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84 if session.to_host and session.from_host and |
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85 (guard_blockall:contains(session.to_host) and not guard_ball_wl:contains(session.from_host) or |
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86 guard_block_bl:contains(session.from_host) and guard_protect:contains(session.to_host)) then |
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87 module:log("info", "closing down s2s incoming stream from filtered entity %s", tostring(session.from_host)) |
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88 session:close() |
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89 end |
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90 end |
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91 end |
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92 |
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93 local function init_hosts(u, i) |
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94 for n in pairs(hosts) do |
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95 if guard_blockall:contains(n) or guard_protect:contains(n) then |
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96 handle_deactivation(n, u, i) ; handle_activation(n, u) |
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97 end |
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98 end |
834
21e99dc949ee
mod_host_guard: close down streams from and to filtered entities, on initialization / configuration reload.
Marco Cirillo <maranda@lightwitch.org>
parents:
818
diff
changeset
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99 close_filtered() |
537
50be30f203f3
mod_host_guard: fixed plugin, minor code refactor.
Marco Cirillo <maranda@lightwitch.org>
parents:
533
diff
changeset
|
100 end |
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mod_host_guard: fixed plugin, minor code refactor.
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parents:
533
diff
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101 |
458
4149fcacbbf1
mod_component_guard: refactored init code, added reloading logic to prevent events pollution with stale dupes.
Marco Cirillo <maranda@lightwitch.org>
parents:
457
diff
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102 local function reload() |
528
1737c08fde30
mod_host_guard: stick to one code "punctuation" style.
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parents:
519
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103 module:log ("debug", "server configuration reloaded, rehashing plugin tables...") |
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mod_host_guard: stick to one code "punctuation" style.
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parents:
519
diff
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|
104 guard_blockall = module:get_option_set("host_guard_blockall", {}) |
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mod_host_guard: stick to one code "punctuation" style.
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parents:
519
diff
changeset
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105 guard_ball_wl = module:get_option_set("host_guard_blockall_exceptions", {}) |
537
50be30f203f3
mod_host_guard: fixed plugin, minor code refactor.
Marco Cirillo <maranda@lightwitch.org>
parents:
533
diff
changeset
|
106 guard_protect = module:get_option_set("host_guard_selective", {}) |
528
1737c08fde30
mod_host_guard: stick to one code "punctuation" style.
Marco Cirillo <maranda@lightwitch.org>
parents:
519
diff
changeset
|
107 guard_block_bl = module:get_option_set("host_guard_blacklist", {}) |
537
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mod_host_guard: fixed plugin, minor code refactor.
Marco Cirillo <maranda@lightwitch.org>
parents:
533
diff
changeset
|
108 |
728
8ad2e24f5efd
mod_host_guard: reduced code duplication and added better logging.
Marco Cirillo <maranda@lightwitch.org>
parents:
727
diff
changeset
|
109 init_hosts(true) |
458
4149fcacbbf1
mod_component_guard: refactored init code, added reloading logic to prevent events pollution with stale dupes.
Marco Cirillo <maranda@lightwitch.org>
parents:
457
diff
changeset
|
110 end |
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parents:
457
diff
changeset
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111 |
4149fcacbbf1
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parents:
457
diff
changeset
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112 local function setup() |
528
1737c08fde30
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Marco Cirillo <maranda@lightwitch.org>
parents:
519
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|
113 module:log ("debug", "initializing host guard module...") |
537
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mod_host_guard: fixed plugin, minor code refactor.
Marco Cirillo <maranda@lightwitch.org>
parents:
533
diff
changeset
|
114 module:hook ("host-activated", handle_activation) |
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parents:
533
diff
changeset
|
115 module:hook ("host-deactivated", handle_deactivation) |
528
1737c08fde30
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parents:
519
diff
changeset
|
116 module:hook ("config-reloaded", reload) |
458
4149fcacbbf1
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parents:
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117 |
728
8ad2e24f5efd
mod_host_guard: reduced code duplication and added better logging.
Marco Cirillo <maranda@lightwitch.org>
parents:
727
diff
changeset
|
118 init_hosts(false, true) |
456
73f06a14390a
mod_component_guard: initial commit.
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parents:
diff
changeset
|
119 end |
458
4149fcacbbf1
mod_component_guard: refactored init code, added reloading logic to prevent events pollution with stale dupes.
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parents:
457
diff
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120 |
725
f79fda2d7e51
mod_host_guard: host handlers are now cleaned properly on module unload (and also still on re/load to be safe).
Marco Cirillo <maranda@lightwitch.org>
parents:
724
diff
changeset
|
121 function module.unload() |
f79fda2d7e51
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diff
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122 module:log ("debug", "removing host handlers as module is being unloaded...") |
f79fda2d7e51
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Marco Cirillo <maranda@lightwitch.org>
parents:
724
diff
changeset
|
123 for n in pairs(hosts) do |
f79fda2d7e51
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parents:
724
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changeset
|
124 hosts[n].events.remove_handler("s2sin-established", s2s_hook) |
f79fda2d7e51
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parents:
724
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|
125 hosts[n].events.remove_handler("route/remote", rr_hook) |
f79fda2d7e51
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parents:
724
diff
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|
126 hosts[n].events.remove_handler("stanza/jabber:server:dialback:result", s2s_hook) |
f79fda2d7e51
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Marco Cirillo <maranda@lightwitch.org>
parents:
724
diff
changeset
|
127 end |
f79fda2d7e51
mod_host_guard: host handlers are now cleaned properly on module unload (and also still on re/load to be safe).
Marco Cirillo <maranda@lightwitch.org>
parents:
724
diff
changeset
|
128 end |
f79fda2d7e51
mod_host_guard: host handlers are now cleaned properly on module unload (and also still on re/load to be safe).
Marco Cirillo <maranda@lightwitch.org>
parents:
724
diff
changeset
|
129 |
458
4149fcacbbf1
mod_component_guard: refactored init code, added reloading logic to prevent events pollution with stale dupes.
Marco Cirillo <maranda@lightwitch.org>
parents:
457
diff
changeset
|
130 if prosody.start_time then |
528
1737c08fde30
mod_host_guard: stick to one code "punctuation" style.
Marco Cirillo <maranda@lightwitch.org>
parents:
519
diff
changeset
|
131 setup() |
458
4149fcacbbf1
mod_component_guard: refactored init code, added reloading logic to prevent events pollution with stale dupes.
Marco Cirillo <maranda@lightwitch.org>
parents:
457
diff
changeset
|
132 else |
533
47b9053dba38
mod_host_guard: replaced prosody.events.add_handler with module:hook.
Marco Cirillo <maranda@lightwitch.org>
parents:
528
diff
changeset
|
133 module:hook ("server-started", setup) |
458
4149fcacbbf1
mod_component_guard: refactored init code, added reloading logic to prevent events pollution with stale dupes.
Marco Cirillo <maranda@lightwitch.org>
parents:
457
diff
changeset
|
134 end |