115 lines
3.6 KiB
Erlang
115 lines
3.6 KiB
Erlang
%%%----------------------------------------------------------------------
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%%% File : ejabberd_check.erl
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%%% Author : Mickael Remond <mremond@process-one.net>
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%%% Purpose : Check ejabberd configuration and
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%%% Created : 27 Feb 2008 by Mickael Remond <mremond@process-one.net>
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%%%
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%%%
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%%% ejabberd, Copyright (C) 2002-2012 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
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%%% along with this program; if not, write to the Free Software
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%%% Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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%%% 02111-1307 USA
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%%%
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%%%----------------------------------------------------------------------
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-module(ejabberd_check).
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-export([libs/0, config/0]).
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-include("ejabberd.hrl").
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-include("ejabberd_config.hrl").
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-compile([export_all]).
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%% TODO:
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%% We want to implement library checking at launch time to issue
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%% human readable user messages.
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libs() ->
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ok.
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%% @doc Consistency check on ejabberd configuration
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config() ->
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check_database_modules().
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check_database_modules() ->
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[check_database_module(M)||M<-get_db_used()].
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check_database_module(host) ->
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ok;
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check_database_module(odbc) ->
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check_modules(odbc, [odbc, odbc_app, odbc_sup, ejabberd_odbc, ejabberd_odbc_sup, odbc_queries]);
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check_database_module(mysql) ->
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check_modules(mysql, [mysql, mysql_auth, mysql_conn, mysql_recv]);
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check_database_module(pgsql) ->
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check_modules(pgsql, [pgsql, pgsql_proto, pgsql_tcp, pgsql_util]).
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%% @doc Issue a critical error and throw an exit if needing module is
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%% missing.
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check_modules(DB, Modules) ->
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case get_missing_modules(Modules) of
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[] ->
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ok;
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MissingModules when is_list(MissingModules) ->
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?CRITICAL_MSG("ejabberd is configured to use '~p', but the following Erlang modules are not installed: '~p'", [DB, MissingModules]),
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exit(database_module_missing)
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end.
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%% @doc Return the list of undefined modules
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get_missing_modules(Modules) ->
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lists:filter(fun(Module) ->
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case catch Module:module_info() of
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{'EXIT', {undef, _}} ->
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true;
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_ -> false
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end
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end, Modules).
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%% @doc Return the list of databases used
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get_db_used() ->
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%% Retrieve domains with a database configured:
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Domains =
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ets:match(local_config, #local_config{key={odbc_server, '$1'},
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value='$2'}),
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%% Check that odbc is the auth method used for those domains:
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%% and return the database name
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DBs = lists:foldr(
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fun([Domain, DB], Acc) ->
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case check_odbc_option(
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ejabberd_config:get_local_option
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({auth_method, Domain})) of
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true -> [get_db_type(DB)|Acc];
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_ -> Acc
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end
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end,
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[], Domains),
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lists:usort(DBs).
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%% @doc Depending in the DB definition, return which type of DB this is.
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%% Note that MSSQL is detected as ODBC.
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%% @spec (DB) -> mysql | pgsql | odbc
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get_db_type(DB) when is_tuple(DB) ->
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element(1, DB);
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get_db_type(DB) when is_list(DB) ->
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odbc.
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%% @doc Return true if odbc option is used
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check_odbc_option(odbc) ->
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true;
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check_odbc_option(AuthMethods) when is_list(AuthMethods) ->
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lists:member(odbc, AuthMethods);
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check_odbc_option(_) ->
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false.
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