mirror of
https://github.com/processone/ejabberd.git
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fd8e07af47
The header consisted of too many unrelated stuff and macros misuse. Some stuff is moved into scram.hrl and type_compat.hrl. All macros have been replaced with the corresponding function calls. TODO: probably type_compat.hrl is not even needed anymore since we support only Erlang >= OTP 17.5
173 lines
5.1 KiB
Erlang
173 lines
5.1 KiB
Erlang
%%%-------------------------------------------------------------------
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%%% File : ejabberd_sm_sql.erl
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%%% Author : Evgeny Khramtsov <ekhramtsov@process-one.net>
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%%% Created : 9 Mar 2015 by Evgeny Khramtsov <ekhramtsov@process-one.net>
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%%%
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%%%
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%%% ejabberd, Copyright (C) 2002-2018 ProcessOne
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%%%
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%%% This program is free software; you can redistribute it and/or
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%%% modify it under the terms of the GNU General Public License as
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%%% published by the Free Software Foundation; either version 2 of the
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%%% License, or (at your option) any later version.
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%%%
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%%% This program is distributed in the hope that it will be useful,
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%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
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%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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%%% General Public License for more details.
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%%%
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%%% You should have received a copy of the GNU General Public License along
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%%% with this program; if not, write to the Free Software Foundation, Inc.,
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%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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%%%
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%%%----------------------------------------------------------------------
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-module(ejabberd_sm_sql).
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-compile([{parse_transform, ejabberd_sql_pt}]).
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-behaviour(ejabberd_sm).
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%% API
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-export([init/0,
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set_session/1,
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delete_session/1,
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get_sessions/0,
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get_sessions/1,
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get_sessions/2]).
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-include("ejabberd_sm.hrl").
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-include("logger.hrl").
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-include("ejabberd_sql_pt.hrl").
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%%%===================================================================
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%%% API
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%%%===================================================================
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-spec init() -> ok | {error, any()}.
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init() ->
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Node = erlang:atom_to_binary(node(), latin1),
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?DEBUG("Cleaning SQL SM table...", []),
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lists:foldl(
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fun(Host, ok) ->
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case ejabberd_sql:sql_query(
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Host, ?SQL("delete from sm where node=%(Node)s")) of
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{updated, _} ->
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ok;
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Err ->
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?ERROR_MSG("failed to clean 'sm' table: ~p", [Err]),
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Err
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end;
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(_, Err) ->
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Err
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end, ok, ejabberd_sm:get_vh_by_backend(?MODULE)).
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set_session(#session{sid = {Now, Pid}, usr = {U, LServer, R},
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priority = Priority, info = Info}) ->
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InfoS = misc:term_to_expr(Info),
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PrioS = enc_priority(Priority),
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TS = now_to_timestamp(Now),
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PidS = misc:encode_pid(Pid),
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Node = erlang:atom_to_binary(node(Pid), latin1),
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case ?SQL_UPSERT(LServer, "sm",
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["!usec=%(TS)d",
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"!pid=%(PidS)s",
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"node=%(Node)s",
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"username=%(U)s",
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"server_host=%(LServer)s",
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"resource=%(R)s",
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"priority=%(PrioS)s",
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"info=%(InfoS)s"]) of
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ok ->
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ok;
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_Err ->
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{error, db_failure}
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end.
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delete_session(#session{usr = {_, LServer, _}, sid = {Now, Pid}}) ->
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TS = now_to_timestamp(Now),
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PidS = list_to_binary(erlang:pid_to_list(Pid)),
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case ejabberd_sql:sql_query(
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LServer,
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?SQL("delete from sm where usec=%(TS)d and pid=%(PidS)s")) of
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{updated, _} ->
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ok;
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_Err ->
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{error, db_failure}
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end.
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get_sessions() ->
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lists:flatmap(
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fun(LServer) ->
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get_sessions(LServer)
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end, ejabberd_sm:get_vh_by_backend(?MODULE)).
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get_sessions(LServer) ->
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case ejabberd_sql:sql_query(
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LServer,
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?SQL("select @(usec)d, @(pid)s, @(node)s, @(username)s,"
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" @(resource)s, @(priority)s, @(info)s from sm"
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" where %(LServer)H")) of
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{selected, Rows} ->
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lists:flatmap(
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fun(Row) ->
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try [row_to_session(LServer, Row)]
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catch _:{bad_node, _} -> []
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end
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end, Rows);
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_Err ->
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[]
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end.
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get_sessions(LUser, LServer) ->
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case ejabberd_sql:sql_query(
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LServer,
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?SQL("select @(usec)d, @(pid)s, @(node)s, @(username)s,"
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" @(resource)s, @(priority)s, @(info)s from sm"
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" where username=%(LUser)s and %(LServer)H")) of
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{selected, Rows} ->
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{ok, lists:flatmap(
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fun(Row) ->
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try [row_to_session(LServer, Row)]
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catch _:{bad_node, _} -> []
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end
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end, Rows)};
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_Err ->
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{error, db_failure}
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end.
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%%%===================================================================
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%%% Internal functions
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%%%===================================================================
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now_to_timestamp({MSec, Sec, USec}) ->
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(MSec * 1000000 + Sec) * 1000000 + USec.
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timestamp_to_now(I) ->
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Head = I div 1000000,
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USec = I rem 1000000,
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MSec = Head div 1000000,
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Sec = Head rem 1000000,
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{MSec, Sec, USec}.
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dec_priority(Prio) ->
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case catch binary_to_integer(Prio) of
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{'EXIT', _} ->
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undefined;
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Int ->
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Int
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end.
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enc_priority(undefined) ->
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<<"">>;
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enc_priority(Int) when is_integer(Int) ->
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integer_to_binary(Int).
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row_to_session(LServer, {USec, PidS, NodeS, User, Resource, PrioS, InfoS}) ->
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Now = timestamp_to_now(USec),
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Pid = misc:decode_pid(PidS, NodeS),
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Priority = dec_priority(PrioS),
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Info = ejabberd_sql:decode_term(InfoS),
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#session{sid = {Now, Pid}, us = {User, LServer},
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usr = {User, LServer, Resource},
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priority = Priority,
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info = Info}.
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