prosody-modules
83ebfc367169
mod_host_guard/mod_host_guard.lua

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mod_host_guard/mod_host_guard.lua @ 5519:83ebfc367169

mod_http_oauth2: Return Authentication Time per OpenID Core Section 2 Mandatory To Implement, either MUST include or OPTIONAL depending on things we don't look at, so might as well include it all the time. Since we do not persist authentication state with cookies or such, the authentication time will always be some point between the user being sent to the authorization endpoint and the time they are sent back to the client application.
author Kim Alvefur <zash@zash.se>
date Mon, 05 Jun 2023 22:32:44 +0200
parent 1343:7dbde05b48a9
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
493
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.
Marco Cirillo <maranda@lightwitch.org>
parents: 460
diff changeset
1 -- (C) 2011, Marco Cirillo (LW.Org)
519
219ffe3541ff mod_host_guard: updated banner.
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parents: 515
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2 -- Block or restrict by blacklist remote access to local components or hosts.
456
73f06a14390a mod_component_guard: initial commit.
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parents:
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3
460
9bb9343f3c7a mod_component_guard: made module global, refactored init.
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parents: 459
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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
493
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.
Marco Cirillo <maranda@lightwitch.org>
parents: 460
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9 local guard_blockall = module:get_option_set("host_guard_blockall", {})
515
e98fe28c50b0 mod_host_guard: added exceptions/whitelisting to the blockall logic (makes little sense otherwise has s2s_disallow = true does the same)
Marco Cirillo <maranda@lightwitch.org>
parents: 494
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10 local guard_ball_wl = module:get_option_set("host_guard_blockall_exceptions", {})
493
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.
Marco Cirillo <maranda@lightwitch.org>
parents: 460
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11 local guard_protect = module:get_option_set("host_guard_selective", {})
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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parents: 460
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12 local guard_block_bl = module:get_option_set("host_guard_blacklist", {})
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parents:
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13
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b94010de43f6 mod_host_guard: referenced configmanager from prosody's _G instead of requiring it.
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14 local config = configmanager
682
3ab1cf30a848 mod_host_guard: using route/remote event hook to stop outgoing connections to filtered entities, yet the returned error is highly misleading.
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parents: 681
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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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parents: 537
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23 if guard_blockall:contains(to_host) and not guard_ball_wl:contains(from_host) or
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parents: 537
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24 guard_block_bl:contains(from_host) and guard_protect:contains(to_host) then
682
3ab1cf30a848 mod_host_guard: using route/remote event hook to stop outgoing connections to filtered entities, yet the returned error is highly misleading.
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parents: 681
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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
528
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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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parents: 684
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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
3ab1cf30a848 mod_host_guard: using route/remote event hook to stop outgoing connections to filtered entities, yet the returned error is highly misleading.
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parents: 681
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37 if guard_blockall:contains(from_host) and not guard_ball_wl:contains(to_host) or
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parents: 681
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38 guard_block_bl:contains(to_host) and guard_protect:contains(from_host) then
3ab1cf30a848 mod_host_guard: using route/remote event hook to stop outgoing connections to filtered entities, yet the returned error is highly misleading.
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parents: 681
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39 module:log("info", "attempted to connect to a filtered remote host %s", to_host)
684
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parents: 683
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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
27529031890b mod_host_guard: now a proper error is returned when stanzas are routed to a filtered remote server (thanks Zash)
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parents: 683
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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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parents: 681
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45 end
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46
728
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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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bf23a8966e20 mod_host_guard: fix typos into the code, the operators were supposed to be "not equal".
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parents: 817
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49 if hosts[host] and config.get(host, "core", "authentication") ~= "anonymous" then
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parents: 537
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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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parents: 537
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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
729
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56 module:log ("debug", "updating or adding host protection for: "..host)
728
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57 end
456
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58 end
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59 end
73f06a14390a mod_component_guard: initial commit.
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60 end
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61
728
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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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parents: 817
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64 if hosts[host] and config.get(host, "core", "authentication") ~= "anonymous" then
680
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parents: 537
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65 hosts[host].events.remove_handler("s2sin-established", s2s_hook)
682
3ab1cf30a848 mod_host_guard: using route/remote event hook to stop outgoing connections to filtered entities, yet the returned error is highly misleading.
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parents: 681
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66 hosts[host].events.remove_handler("route/remote", rr_hook)
680
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parents: 537
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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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parents: 818
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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
728
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93 local function init_hosts(u, i)
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parents: 724
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94 for n in pairs(hosts) do
727
99f5846bcd85 mod_host_guard: during configuration reload the host handlers should be reinitialized as well, so reverted changed and added back the "redundant code".
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parents: 726
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95 if guard_blockall:contains(n) or guard_protect:contains(n) then
834
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96 handle_deactivation(n, u, i) ; handle_activation(n, u)
727
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parents: 726
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97 end
537
50be30f203f3 mod_host_guard: fixed plugin, minor code refactor.
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98 end
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99 close_filtered()
537
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100 end
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101
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Marco Cirillo <maranda@lightwitch.org>
parents: 457
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102 local function reload()
528
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parents: 519
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103 module:log ("debug", "server configuration reloaded, rehashing plugin tables...")
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parents: 519
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104 guard_blockall = module:get_option_set("host_guard_blockall", {})
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parents: 519
diff changeset
105 guard_ball_wl = module:get_option_set("host_guard_blockall_exceptions", {})
537
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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.
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parents: 519
diff changeset
107 guard_block_bl = module:get_option_set("host_guard_blacklist", {})
537
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parents: 533
diff changeset
108
728
8ad2e24f5efd mod_host_guard: reduced code duplication and added better logging.
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109 init_hosts(true)
458
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110 end
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111
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112 local function setup()
528
1737c08fde30 mod_host_guard: stick to one code "punctuation" style.
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113 module:log ("debug", "initializing host guard module...")
537
50be30f203f3 mod_host_guard: fixed plugin, minor code refactor.
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parents: 533
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114 module:hook ("host-activated", handle_activation)
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parents: 533
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115 module:hook ("host-deactivated", handle_deactivation)
528
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parents: 519
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116 module:hook ("config-reloaded", reload)
458
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117
728
8ad2e24f5efd mod_host_guard: reduced code duplication and added better logging.
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118 init_hosts(false, true)
456
73f06a14390a mod_component_guard: initial commit.
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parents:
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119 end
458
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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).
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parents: 724
diff changeset
121 function module.unload()
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122 module:log ("debug", "removing host handlers as module is being unloaded...")
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123 for n in pairs(hosts) do
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124 hosts[n].events.remove_handler("s2sin-established", s2s_hook)
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125 hosts[n].events.remove_handler("route/remote", rr_hook)
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126 hosts[n].events.remove_handler("stanza/jabber:server:dialback:result", s2s_hook)
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127 end
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128 end
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129
458
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130 if prosody.start_time then
528
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parents: 519
diff changeset
131 setup()
458
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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
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parents: 457
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134 end