72 lines
2.3 KiB
Erlang
72 lines
2.3 KiB
Erlang
%%%-------------------------------------------------------------------
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%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
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%%% @copyright (C) 2016, Evgeny Khramtsov
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%%% @doc
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%%%
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%%% @end
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%%% Created : 13 Apr 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
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%%%-------------------------------------------------------------------
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-module(mod_caps_sql).
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-behaviour(mod_caps).
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%% API
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-export([init/2, caps_read/2, caps_write/3, export/1]).
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-include("mod_caps.hrl").
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%%%===================================================================
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%%% API
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%%%===================================================================
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init(_Host, _Opts) ->
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ok.
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caps_read(LServer, {Node, SubNode}) ->
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SNode = ejabberd_sql:escape(Node),
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SSubNode = ejabberd_sql:escape(SubNode),
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case ejabberd_sql:sql_query(
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LServer, [<<"select feature from caps_features where ">>,
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<<"node='">>, SNode, <<"' and subnode='">>,
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SSubNode, <<"';">>]) of
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{selected, [<<"feature">>], [[H]|_] = Fs} ->
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case catch jlib:binary_to_integer(H) of
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Int when is_integer(Int), Int>=0 ->
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{ok, Int};
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_ ->
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{ok, lists:flatten(Fs)}
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end;
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_ ->
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error
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end.
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caps_write(LServer, NodePair, Features) ->
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ejabberd_sql:sql_transaction(
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LServer,
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sql_write_features_t(NodePair, Features)).
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export(_Server) ->
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[{caps_features,
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fun(_Host, #caps_features{node_pair = NodePair,
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features = Features}) ->
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sql_write_features_t(NodePair, Features);
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(_Host, _R) ->
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[]
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end}].
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%%%===================================================================
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%%% Internal functions
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%%%===================================================================
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sql_write_features_t({Node, SubNode}, Features) ->
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SNode = ejabberd_sql:escape(Node),
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SSubNode = ejabberd_sql:escape(SubNode),
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NewFeatures = if is_integer(Features) ->
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[jlib:integer_to_binary(Features)];
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true ->
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Features
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end,
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[[<<"delete from caps_features where node='">>,
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SNode, <<"' and subnode='">>, SSubNode, <<"';">>]|
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[[<<"insert into caps_features(node, subnode, feature) ">>,
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<<"values ('">>, SNode, <<"', '">>, SSubNode, <<"', '">>,
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ejabberd_sql:escape(F), <<"');">>] || F <- NewFeatures]].
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