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%%%---------------------------------------------------------------------- |
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%%% File : mod_offline_stub.erl |
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%%% Author : Radek Szymczyszyn |
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%%% <radoslaw.szymczyszyn@erlang-solutions.com> |
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%%% Purpose : Silence <service-unavailable/> when not using mod_offline |
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%%% but using mod_mam for message persistence. |
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%%% |
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%%% RFC 6121 requires a <service-unavailable/> stanza error |
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%%% to be sent to a user messaging an unavailable recipient |
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%%% if the message is not stored for delayed delivery |
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%%% (i.e. as an "offline message"). |
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%%% If the recipient exists (i.e. auth module returns `true` |
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%%% from `does_user_exist`) mod_mam stores the message, |
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%%% but <service-unavailable/> is still returned, |
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%%% what is not compliant with the RFC. |
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%%% |
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%%% This module prevents returning <service-unavailable/>. |
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%%% See : RFC 6121 8.5.2.2.1 |
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%%% License : GNU GPLv2 or (at your option) any later version |
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%%% |
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%%% MongooseIM, Copyright (C) 2014 Erlang Solutions |
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%%%---------------------------------------------------------------------- |
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-module(mod_offline_stub). |
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-author('mongoose-im@erlang-solutions.com'). |
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-behaviour(gen_mod). |
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-behaviour(mongoose_module_metrics). |
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%% gen_mod callbacks |
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-export([start/2, |
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stop/1, |
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hooks/1, |
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supported_features/0]). |
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%% Hook handlers |
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-export([stop_hook_processing/3]). |
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-spec start(any(), any()) -> 'ok'. |
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start(_HostType, _Opts) -> |
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ok. |
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-spec stop(any()) -> 'ok'. |
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stop(_HostType) -> |
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ok. |
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supported_features() -> [dynamic_domains]. |
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-spec hooks(mongooseim:host_type()) -> gen_hook:hook_list(). |
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hooks(HostType) -> |
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[{offline_message_hook, HostType, fun ?MODULE:stop_hook_processing/3, #{}, 75}]. |
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-spec stop_hook_processing(Acc, Params, Extra) -> {stop, Acc} when |
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Acc :: mongoose_acc:t(), |
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Params :: map(), |
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Extra :: gen_hook:extra(). |
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stop_hook_processing(Acc, _Params, _Extra) -> |
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{stop, Acc}. |