342 lines
10 KiB
Erlang
342 lines
10 KiB
Erlang
%%%----------------------------------------------------------------------
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%%% File : ejabberd_config.erl
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%%% Author : Alexey Shchepin <alexey@process-one.net>
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%%% Purpose : Load config file
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%%% Created : 14 Dec 2002 by Alexey Shchepin <alexey@process-one.net>
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%%%
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%%%
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%%% ejabberd, Copyright (C) 2002-2008 Process-one
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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_config).
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-author('alexey@process-one.net').
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-export([start/0, load_file/1,
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add_global_option/2, add_local_option/2,
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get_global_option/1, get_local_option/1]).
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-export([get_vh_by_auth_method/1]).
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-include("ejabberd.hrl").
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-include("ejabberd_config.hrl").
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start() ->
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mnesia:create_table(config,
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[{disc_copies, [node()]},
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{attributes, record_info(fields, config)}]),
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mnesia:add_table_copy(config, node(), ram_copies),
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mnesia:create_table(local_config,
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[{disc_copies, [node()]},
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{local_content, true},
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{attributes, record_info(fields, local_config)}]),
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mnesia:add_table_copy(local_config, node(), ram_copies),
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Config = case application:get_env(config) of
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{ok, Path} -> Path;
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undefined ->
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case os:getenv("EJABBERD_CONFIG_PATH") of
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false ->
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?CONFIG_PATH;
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Path ->
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Path
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end
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end,
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load_file(Config).
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load_file(File) ->
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case file:consult(File) of
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{ok, Terms} ->
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State = lists:foldl(fun search_hosts/2, #state{}, Terms),
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Res = lists:foldl(fun process_term/2, State, Terms),
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set_opts(Res);
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{error, Reason} ->
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?ERROR_MSG("Can't load config file ~p: ~p", [File, Reason]),
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exit(File ++ ": " ++ file:format_error(Reason))
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end.
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search_hosts(Term, State) ->
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case Term of
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{host, Host} ->
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if
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State#state.hosts == [] ->
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add_hosts_to_option([Host], State);
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true ->
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?ERROR_MSG("Can't load config file: "
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"too many hosts definitions", []),
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exit("too many hosts definitions")
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end;
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{hosts, Hosts} ->
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if
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State#state.hosts == [] ->
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add_hosts_to_option(Hosts, State);
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true ->
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?ERROR_MSG("Can't load config file: "
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"too many hosts definitions", []),
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exit("too many hosts definitions")
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end;
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_ ->
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State
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end.
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add_hosts_to_option(Hosts, State) ->
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PrepHosts = normalize_hosts(Hosts),
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add_option(hosts, PrepHosts, State#state{hosts = PrepHosts}).
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normalize_hosts(Hosts) ->
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normalize_hosts(Hosts,[]).
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normalize_hosts([], PrepHosts) ->
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lists:reverse(PrepHosts);
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normalize_hosts([Host|Hosts], PrepHosts) ->
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case jlib:nodeprep(Host) of
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error ->
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?ERROR_MSG("Can't load config file: "
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"invalid host name [~p]", [Host]),
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exit("invalid hostname");
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PrepHost ->
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normalize_hosts(Hosts, [PrepHost|PrepHosts])
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end.
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process_term(Term, State) ->
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case Term of
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override_global ->
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State#state{override_global = true};
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override_local ->
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State#state{override_local = true};
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override_acls ->
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State#state{override_acls = true};
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{acl, _ACLName, _ACLData} ->
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process_host_term(Term, global, State);
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{access, _RuleName, _Rules} ->
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process_host_term(Term, global, State);
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{shaper, _Name, _Data} ->
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%%lists:foldl(fun(Host, S) -> process_host_term(Term, Host, S) end,
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%% State, State#state.hosts);
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process_host_term(Term, global, State);
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{host, _Host} ->
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State;
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{hosts, _Hosts} ->
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State;
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{host_config, Host, Terms} ->
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lists:foldl(fun(T, S) -> process_host_term(T, Host, S) end,
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State, Terms);
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{listen, Val} ->
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add_option(listen, Val, State);
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{language, Val} ->
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add_option(language, Val, State);
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{outgoing_s2s_port, Port} ->
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add_option(outgoing_s2s_port, Port, State);
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{s2s_use_starttls, Port} ->
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add_option(s2s_use_starttls, Port, State);
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{s2s_certfile, CertFile} ->
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add_option(s2s_certfile, CertFile, State);
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{domain_certfile, Domain, CertFile} ->
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add_option({domain_certfile, Domain}, CertFile, State);
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{node_type, NodeType} ->
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add_option(node_type, NodeType, State);
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{cluster_nodes, Nodes} ->
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add_option(cluster_nodes, Nodes, State);
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{domain_balancing, Domain, Balancing} ->
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add_option({domain_balancing, Domain}, Balancing, State);
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{domain_balancing_component_number, Domain, N} ->
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add_option({domain_balancing_component_number, Domain}, N, State);
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{watchdog_admins, Admins} ->
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add_option(watchdog_admins, Admins, State);
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{loglevel, Loglevel} ->
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ejabberd_loglevel:set(Loglevel),
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State;
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{_Opt, _Val} ->
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lists:foldl(fun(Host, S) -> process_host_term(Term, Host, S) end,
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State, State#state.hosts)
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end.
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process_host_term(Term, Host, State) ->
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case Term of
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{acl, ACLName, ACLData} ->
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State#state{opts =
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[acl:to_record(Host, ACLName, ACLData) | State#state.opts]};
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{access, RuleName, Rules} ->
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State#state{opts = [#config{key = {access, RuleName, Host},
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value = Rules} |
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State#state.opts]};
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{shaper, Name, Data} ->
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State#state{opts = [#config{key = {shaper, Name, Host},
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value = Data} |
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State#state.opts]};
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{host, Host} ->
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State;
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{hosts, _Hosts} ->
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State;
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{odbc_server, ODBC_server} ->
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odbc_modules_found = check_odbc_modules(ODBC_server),
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add_option({odbc_server, Host}, ODBC_server, State);
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{Opt, Val} ->
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add_option({Opt, Host}, Val, State)
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end.
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add_option(Opt, Val, State) ->
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Table = case Opt of
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hosts ->
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config;
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language ->
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config;
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_ ->
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local_config
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end,
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case Table of
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config ->
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State#state{opts = [#config{key = Opt, value = Val} |
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State#state.opts]};
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local_config ->
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case Opt of
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{{add, OptName}, Host} ->
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State#state{opts = compact({OptName, Host}, Val,
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State#state.opts, [])};
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_ ->
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State#state{opts = [#local_config{key = Opt, value = Val} |
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State#state.opts]}
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end
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end.
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compact(Opt, Val, [], Os) ->
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[#local_config{key = Opt, value = Val}] ++ Os;
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compact(Opt, Val, [O | Os1], Os2) ->
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case O#local_config.key of
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Opt ->
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Os2 ++ [#local_config{key = Opt,
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value = Val++O#local_config.value}
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] ++ Os1;
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_ ->
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compact(Opt, Val, Os1, Os2++[O])
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end.
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set_opts(State) ->
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Opts = lists:reverse(State#state.opts),
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F = fun() ->
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if
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State#state.override_global ->
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Ksg = mnesia:all_keys(config),
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lists:foreach(fun(K) ->
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mnesia:delete({config, K})
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end, Ksg);
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true ->
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ok
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end,
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if
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State#state.override_local ->
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Ksl = mnesia:all_keys(local_config),
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lists:foreach(fun(K) ->
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mnesia:delete({local_config, K})
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end, Ksl);
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true ->
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ok
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end,
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if
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State#state.override_acls ->
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Ksa = mnesia:all_keys(acl),
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lists:foreach(fun(K) ->
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mnesia:delete({acl, K})
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end, Ksa);
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true ->
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ok
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end,
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lists:foreach(fun(R) ->
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mnesia:write(R)
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end, Opts)
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end,
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case mnesia:transaction(F) of
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{atomic, _} -> ok;
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{aborted,{no_exists,Table}} ->
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MnesiaDirectory = mnesia:system_info(directory),
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?ERROR_MSG("Error reading Mnesia database spool files:~n"
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"The Mnesia database couldn't read the spool file for the table '~p'.~n"
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"ejabberd needs read and write access in the directory:~n ~s~n"
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"Maybe the problem is a change in the computer hostname,~n"
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"or a change in the Erlang node name, which is currently:~n ~p~n"
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"Check the ejabberd guide for details about changing the~n"
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"computer hostname or Erlang node name.~n",
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[Table, MnesiaDirectory, node()]),
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exit("Error reading Mnesia database")
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end.
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add_global_option(Opt, Val) ->
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mnesia:transaction(fun() ->
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mnesia:write(#config{key = Opt,
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value = Val})
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end).
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add_local_option(Opt, Val) ->
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mnesia:transaction(fun() ->
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mnesia:write(#local_config{key = Opt,
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value = Val})
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end).
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get_global_option(Opt) ->
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case ets:lookup(config, Opt) of
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[#config{value = Val}] ->
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Val;
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_ ->
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undefined
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end.
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get_local_option(Opt) ->
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case ets:lookup(local_config, Opt) of
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[#local_config{value = Val}] ->
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Val;
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_ ->
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undefined
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end.
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%% Return the list of hosts handled by a given module
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get_vh_by_auth_method(AuthMethod) ->
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mnesia:dirty_select(local_config,
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[{#local_config{key = {auth_method, '$1'},
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value=AuthMethod},[],['$1']}]).
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check_odbc_modules(ODBC_server) ->
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case catch check_odbc_modules2(ODBC_server) of
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{'EXIT', {undef, [{Module, module_info, []} | _]}} ->
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?CRITICAL_MSG("ejabberd is configured to use ODBC, but the Erlang module '~p' is not installed.", [Module]),
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odbc_module_not_found;
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_ -> odbc_modules_found
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end.
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check_odbc_modules2(ODBC_server) ->
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check_modules_exists([ejabberd_odbc, ejabberd_odbc_sup, odbc_queries]),
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case ODBC_server of
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{mysql, _Server, _DB, _Username, _Password} ->
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check_modules_exists([mysql, mysql_auth, mysql_conn, mysql_recv]);
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{mysql, _Server, _Port, _DB, _Username, _Password} ->
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check_modules_exists([mysql, mysql_auth, mysql_conn, mysql_recv]);
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{pgsql, _Server, _DB, _Username, _Password} ->
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check_modules_exists([pgsql, pgsql_proto, pgsql_tcp, pgsql_util]);
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{pgsql, _Server, _Port, _DB, _Username, _Password} ->
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check_modules_exists([pgsql, pgsql_proto, pgsql_tcp, pgsql_util]);
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Server when is_list(Server) ->
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ok
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end.
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check_modules_exists(Modules) ->
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[true = is_list(Module:module_info()) || Module <- Modules].
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