Chapril/xmpp.chapril.org-ejabberd
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xmpp.chapril.org-ejabberd/src/ejabberd_config.erl
Evgeniy Khramtsov 4bf4193d55 Add 'negotiation_timeout' to the known options list
2018-02-20 19:47:50 +03:00

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%%%----------------------------------------------------------------------
%%% File : ejabberd_config.erl
%%% Author : Alexey Shchepin <alexey@process-one.net>
%%% Purpose : Load config file
%%% Created : 14 Dec 2002 by Alexey Shchepin <alexey@process-one.net>
%%%
%%%
%%% ejabberd, Copyright (C) 2002-2018 ProcessOne
%%%
%%% This program is free software; you can redistribute it and/or
%%% modify it under the terms of the GNU General Public License as
%%% published by the Free Software Foundation; either version 2 of the
%%% License, or (at your option) any later version.
%%%
%%% This program is distributed in the hope that it will be useful,
%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
%%% General Public License for more details.
%%%
%%% You should have received a copy of the GNU General Public License along
%%% with this program; if not, write to the Free Software Foundation, Inc.,
%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
%%%
%%%----------------------------------------------------------------------
-module(ejabberd_config).
-author('alexey@process-one.net').
-export([start/0, load_file/1, reload_file/0, read_file/1,
get_option/1, get_option/2, add_option/2, has_option/1,
get_version/0, get_myhosts/0, get_mylang/0, get_lang/1,
get_ejabberd_config_path/0, is_using_elixir_config/0,
prepare_opt_val/4, transform_options/1, collect_options/1,
convert_to_yaml/1, convert_to_yaml/2, v_db/2,
env_binary_to_list/2, opt_type/1, may_hide_data/1,
is_elixir_enabled/0, v_dbs/1, v_dbs_mods/1,
default_db/1, default_db/2, default_ram_db/1, default_ram_db/2,
default_queue_type/1, queue_dir/0, fsm_limit_opts/1,
use_cache/1, cache_size/1, cache_missed/1, cache_life_time/1,
codec_options/1, get_plain_terms_file/2, negotiation_timeout/0]).
-export([start/2]).
%% The following functions are deprecated.
-export([add_global_option/2, add_local_option/2,
get_global_option/2, get_local_option/2,
get_global_option/3, get_local_option/3,
get_option/3]).
-export([is_file_readable/1]).
-deprecated([{add_global_option, 2}, {add_local_option, 2},
{get_global_option, 2}, {get_local_option, 2},
{get_global_option, 3}, {get_local_option, 3},
{get_option, 3}, {is_file_readable, 1}]).
-include("ejabberd.hrl").
-include("logger.hrl").
-include("ejabberd_config.hrl").
-include_lib("kernel/include/file.hrl").
-include_lib("stdlib/include/ms_transform.hrl").
-callback opt_type(atom()) -> function() | [atom()].
%% @type macro() = {macro_key(), macro_value()}
%% @type macro_key() = atom().
%% The atom must have all characters in uppercase.
%% @type macro_value() = term().
start() ->
ConfigFile = get_ejabberd_config_path(),
?INFO_MSG("Loading configuration from ~s", [ConfigFile]),
catch ets:new(ejabberd_options,
[named_table, public, {read_concurrency, true}]),
catch ets:new(ejabberd_db_modules,
[named_table, public, {read_concurrency, true}]),
State1 = load_file(ConfigFile),
UnixTime = p1_time_compat:system_time(seconds),
SharedKey = case erlang:get_cookie() of
nocookie ->
str:sha(randoms:get_string());
Cookie ->
str:sha(misc:atom_to_binary(Cookie))
end,
State2 = set_option({node_start, global}, UnixTime, State1),
State3 = set_option({shared_key, global}, SharedKey, State2),
set_opts(State3).
%% When starting ejabberd for testing, we sometimes want to start a
%% subset of hosts from the one define in the config file.
%% This function override the host list read from config file by the
%% one we provide.
%% Hosts to start are defined in an ejabberd application environment
%% variable 'hosts' to make it easy to ignore some host in config
%% file.
hosts_to_start(State) ->
case application:get_env(ejabberd, hosts) of
undefined ->
%% Start all hosts as defined in config file
State;
{ok, Hosts} ->
set_hosts_in_options(Hosts, State)
end.
%% @private
%% At the moment, these functions are mainly used to setup unit tests.
-spec start(Hosts :: [binary()], Opts :: [acl:acl() | local_config()]) -> ok.
start(Hosts, Opts) ->
catch ets:new(ejabberd_options,
[named_table, public, {read_concurrency, true}]),
catch ets:new(ejabberd_db_modules,
[named_table, public, {read_concurrency, true}]),
UnixTime = p1_time_compat:system_time(seconds),
SharedKey = case erlang:get_cookie() of
nocookie ->
str:sha(randoms:get_string());
Cookie ->
str:sha(misc:atom_to_binary(Cookie))
end,
State1 = #state{opts = Opts},
State2 = set_option({node_start, global}, UnixTime, State1),
State3 = set_option({shared_key, global}, SharedKey, State2),
set_opts(set_hosts_in_options(Hosts, State3)),
ok.
%% @doc Get the filename of the ejabberd configuration file.
%% The filename can be specified with: erl -config "/path/to/ejabberd.yml".
%% It can also be specified with the environtment variable EJABBERD_CONFIG_PATH.
%% If not specified, the default value 'ejabberd.yml' is assumed.
%% @spec () -> string()
get_ejabberd_config_path() ->
case get_env_config() of
{ok, Path} -> Path;
undefined ->
case os:getenv("EJABBERD_CONFIG_PATH") of
false ->
?CONFIG_PATH;
Path ->
Path
end
end.
-spec get_env_config() -> {ok, string()} | undefined.
get_env_config() ->
%% First case: the filename can be specified with: erl -config "/path/to/ejabberd.yml".
case application:get_env(ejabberd, config) of
R = {ok, _Path} -> R;
undefined ->
%% Second case for embbeding ejabberd in another app, for example for Elixir:
%% config :ejabberd,
%% file: "config/ejabberd.yml"
application:get_env(ejabberd, file)
end.
%% @doc Read the ejabberd configuration file.
%% It also includes additional configuration files and replaces macros.
%% This function will crash if finds some error in the configuration file.
%% @spec (File::string()) -> #state{}
read_file(File) ->
read_file(File, [{replace_macros, true},
{include_files, true},
{include_modules_configs, true}]).
read_file(File, Opts) ->
Terms1 = case is_elixir_enabled() of
true ->
case 'Elixir.Ejabberd.ConfigUtil':is_elixir_config(File) of
true ->
'Elixir.Ejabberd.Config':init(File),
'Elixir.Ejabberd.Config':get_ejabberd_opts();
false ->
get_plain_terms_file(File, Opts)
end;
false ->
get_plain_terms_file(File, Opts)
end,
Terms_macros = case proplists:get_bool(replace_macros, Opts) of
true -> replace_macros(Terms1);
false -> Terms1
end,
Terms = transform_terms(Terms_macros),
State = lists:foldl(fun search_hosts/2, #state{}, Terms),
{Head, Tail} = lists:partition(
fun({host_config, _}) -> false;
({append_host_config, _}) -> false;
(_) -> true
end, Terms),
State1 = lists:foldl(fun process_term/2, State, Head ++ Tail),
State1#state{opts = compact(State1#state.opts)}.
-spec load_file(string()) -> #state{}.
load_file(File) ->
State0 = read_file(File),
State1 = hosts_to_start(State0),
AllMods = get_modules(),
init_module_db_table(AllMods),
ModOpts = get_modules_with_options(AllMods),
validate_opts(State1, ModOpts).
-spec reload_file() -> ok.
reload_file() ->
Config = get_ejabberd_config_path(),
OldHosts = get_myhosts(),
State = load_file(Config),
set_opts(State),
NewHosts = get_myhosts(),
lists:foreach(
fun(Host) ->
ejabberd_hooks:run(host_up, [Host])
end, NewHosts -- OldHosts),
lists:foreach(
fun(Host) ->
ejabberd_hooks:run(host_down, [Host])
end, OldHosts -- NewHosts),
ejabberd_hooks:run(config_reloaded, []).
-spec convert_to_yaml(file:filename()) -> ok | {error, any()}.
convert_to_yaml(File) ->
convert_to_yaml(File, stdout).
-spec convert_to_yaml(file:filename(),
stdout | file:filename()) -> ok | {error, any()}.
convert_to_yaml(File, Output) ->
State = read_file(File, [{include_files, false}]),
Opts = [{K, V} || #local_config{key = K, value = V} <- State#state.opts],
{GOpts, HOpts} = split_by_hosts(Opts),
NewOpts = GOpts ++ lists:map(
fun({Host, Opts1}) ->
{host_config, [{Host, Opts1}]}
end, HOpts),
Data = fast_yaml:encode(lists:reverse(NewOpts)),
case Output of
stdout ->
io:format("~s~n", [Data]);
FileName ->
file:write_file(FileName, Data)
end.
%% Some Erlang apps expects env parameters to be list and not binary.
%% For example, Mnesia is not able to start if mnesia dir is passed as a binary.
%% However, binary is most common on Elixir, so it is easy to make a setup mistake.
-spec env_binary_to_list(atom(), atom()) -> {ok, any()}|undefined.
env_binary_to_list(Application, Parameter) ->
%% Application need to be loaded to allow setting parameters
application:load(Application),
case application:get_env(Application, Parameter) of
{ok, Val} when is_binary(Val) ->
BVal = binary_to_list(Val),
application:set_env(Application, Parameter, BVal),
{ok, BVal};
Other ->
Other
end.
%% @doc Read an ejabberd configuration file and return the terms.
%% Input is an absolute or relative path to an ejabberd config file.
%% Returns a list of plain terms,
%% in which the options 'include_config_file' were parsed
%% and the terms in those files were included.
%% @spec(iolist()) -> [term()]
get_plain_terms_file(File, Opts) when is_binary(File) ->
get_plain_terms_file(binary_to_list(File), Opts);
get_plain_terms_file(File1, Opts) ->
File = get_absolute_path(File1),
DontStopOnError = lists:member(dont_halt_on_error, Opts),
case consult(File) of
{ok, Terms} ->
BinTerms1 = strings_to_binary(Terms),
ModInc = case proplists:get_bool(include_modules_configs, Opts) of
true ->
Files = [{filename:rootname(filename:basename(F)), F}
|| F <- filelib:wildcard(ext_mod:config_dir() ++ "/*.{yml,yaml}")
++ filelib:wildcard(ext_mod:modules_dir() ++ "/*/conf/*.{yml,yaml}")],
[proplists:get_value(F,Files) || F <- proplists:get_keys(Files)];
_ ->
[]
end,
BinTerms = BinTerms1 ++ [{include_config_file, list_to_binary(V)} || V <- ModInc],
case proplists:get_bool(include_files, Opts) of
true ->
include_config_files(BinTerms);
false ->
BinTerms
end;
{error, enoent, Reason} ->
case DontStopOnError of
true ->
?WARNING_MSG(Reason, []),
[];
_ ->
?ERROR_MSG(Reason, []),
exit_or_halt(Reason)
end;
{error, Reason} ->
?ERROR_MSG(Reason, []),
case DontStopOnError of
true -> [];
_ -> exit_or_halt(Reason)
end
end.
consult(File) ->
case filename:extension(File) of
Ex when (Ex == ".yml") or (Ex == ".yaml") ->
case fast_yaml:decode_from_file(File, [plain_as_atom]) of
{ok, []} ->
{ok, []};
{ok, [Document|_]} ->
{ok, parserl(Document)};
{error, Err} ->
Msg1 = "Cannot load " ++ File ++ ": ",
Msg2 = fast_yaml:format_error(Err),
case Err of
enoent ->
{error, enoent, Msg1 ++ Msg2};
_ ->
{error, Msg1 ++ Msg2}
end
end;
_ ->
case file:consult(File) of
{ok, Terms} ->
{ok, Terms};
{error, {LineNumber, erl_parse, _ParseMessage} = Reason} ->
{error, describe_config_problem(File, Reason, LineNumber)};
{error, Reason} ->
case Reason of
enoent ->
{error, enoent, describe_config_problem(File, Reason)};
_ ->
{error, describe_config_problem(File, Reason)}
end
end
end.
parserl(<<"> ", Term/binary>>) ->
{ok, A2, _} = erl_scan:string(binary_to_list(Term)),
{ok, A3} = erl_parse:parse_term(A2),
A3;
parserl({A, B}) ->
{parserl(A), parserl(B)};
parserl([El|Tail]) ->
[parserl(El) | parserl(Tail)];
parserl(Other) ->
Other.
%% @doc Convert configuration filename to absolute path.
%% Input is an absolute or relative path to an ejabberd configuration file.
%% And returns an absolute path to the configuration file.
%% @spec (string()) -> string()
get_absolute_path(File) ->
case filename:pathtype(File) of
absolute ->
File;
relative ->
{ok, Dir} = file:get_cwd(),
filename:absname_join(Dir, File);
volumerelative ->
filename:absname(File)
end.
search_hosts(Term, State) ->
case Term of
{host, Host} ->
if
State#state.hosts == [] ->
set_hosts_in_options([Host], State);
true ->
?ERROR_MSG("Can't load config file: "
"too many hosts definitions", []),
exit("too many hosts definitions")
end;
{hosts, Hosts} ->
if
State#state.hosts == [] ->
set_hosts_in_options(Hosts, State);
true ->
?ERROR_MSG("Can't load config file: "
"too many hosts definitions", []),
exit("too many hosts definitions")
end;
_ ->
State
end.
set_hosts_in_options(Hosts, State) ->
PrepHosts = normalize_hosts(Hosts),
NewOpts = lists:filter(fun({local_config,{hosts,global},_}) -> false;
(_) -> true
end, State#state.opts),
set_option({hosts, global}, PrepHosts, State#state{hosts = PrepHosts, opts = NewOpts}).
normalize_hosts(Hosts) ->
normalize_hosts(Hosts,[]).
normalize_hosts([], PrepHosts) ->
lists:reverse(PrepHosts);
normalize_hosts([Host|Hosts], PrepHosts) ->
case jid:nodeprep(iolist_to_binary(Host)) of
error ->
?ERROR_MSG("Can't load config file: "
"invalid host name [~p]", [Host]),
exit("invalid hostname");
PrepHost ->
normalize_hosts(Hosts, [PrepHost|PrepHosts])
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% Errors reading the config file
describe_config_problem(Filename, Reason) ->
Text1 = lists:flatten("Problem loading ejabberd config file " ++ Filename),
Text2 = lists:flatten(" : " ++ file:format_error(Reason)),
ExitText = Text1 ++ Text2,
ExitText.
describe_config_problem(Filename, Reason, LineNumber) ->
Text1 = lists:flatten("Problem loading ejabberd config file " ++ Filename),
Text2 = lists:flatten(" approximately in the line "
++ file:format_error(Reason)),
ExitText = Text1 ++ Text2,
Lines = get_config_lines(Filename, LineNumber, 10, 3),
?ERROR_MSG("The following lines from your configuration file might be"
" relevant to the error: ~n~s", [Lines]),
ExitText.
get_config_lines(Filename, TargetNumber, PreContext, PostContext) ->
{ok, Fd} = file:open(Filename, [read]),
LNumbers = lists:seq(TargetNumber-PreContext, TargetNumber+PostContext),
NextL = io:get_line(Fd, no_prompt),
R = get_config_lines2(Fd, NextL, 1, LNumbers, []),
file:close(Fd),
R.
get_config_lines2(_Fd, eof, _CurrLine, _LNumbers, R) ->
lists:reverse(R);
get_config_lines2(_Fd, _NewLine, _CurrLine, [], R) ->
lists:reverse(R);
get_config_lines2(Fd, Data, CurrLine, [NextWanted | LNumbers], R) when is_list(Data) ->
NextL = io:get_line(Fd, no_prompt),
if
CurrLine >= NextWanted ->
Line2 = [integer_to_list(CurrLine), ": " | Data],
get_config_lines2(Fd, NextL, CurrLine+1, LNumbers, [Line2 | R]);
true ->
get_config_lines2(Fd, NextL, CurrLine+1, [NextWanted | LNumbers], R)
end.
%% If ejabberd isn't yet running in this node, then halt the node
exit_or_halt(ExitText) ->
case [Vsn || {ejabberd, _Desc, Vsn} <- application:which_applications()] of
[] ->
timer:sleep(1000),
halt(string:substr(ExitText, 1, 199));
[_] ->
exit(ExitText)
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% Support for 'include_config_file'
get_config_option_key(Name, Val) ->
if Name == listen ->
case Val of
{{Port, IP, Trans}, _Mod, _Opts} ->
{Port, IP, Trans};
{{Port, Trans}, _Mod, _Opts} when Trans == tcp; Trans == udp ->
{Port, {0,0,0,0}, Trans};
{{Port, IP}, _Mod, _Opts} ->
{Port, IP, tcp};
{Port, _Mod, _Opts} ->
{Port, {0,0,0,0}, tcp};
V when is_list(V) ->
lists:foldl(
fun({port, Port}, {_, IP, T}) ->
{Port, IP, T};
({ip, IP}, {Port, _, T}) ->
{Port, IP, T};
({transport, T}, {Port, IP, _}) ->
{Port, IP, T};
(_, Res) ->
Res
end, {5222, {0,0,0,0}, tcp}, Val)
end;
is_tuple(Val) ->
element(1, Val);
true ->
Val
end.
maps_to_lists(IMap) ->
maps:fold(fun(Name, Map, Res) when Name == host_config orelse Name == append_host_config ->
[{Name, [{Host, maps_to_lists(SMap)} || {Host,SMap} <- maps:values(Map)]} | Res];
(Name, Map, Res) when is_map(Map) ->
[{Name, maps:values(Map)} | Res];
(Name, Val, Res) ->
[{Name, Val} | Res]
end, [], IMap).
merge_configs(Terms, ResMap) ->
lists:foldl(fun({Name, Val}, Map) when is_list(Val), Name =/= auth_method ->
Old = maps:get(Name, Map, #{}),
New = lists:foldl(fun(SVal, OMap) ->
NVal = if Name == host_config orelse Name == append_host_config ->
{Host, Opts} = SVal,
{_, SubMap} = maps:get(Host, OMap, {Host, #{}}),
{Host, merge_configs(Opts, SubMap)};
true ->
SVal
end,
maps:put(get_config_option_key(Name, SVal), NVal, OMap)
end, Old, Val),
maps:put(Name, New, Map);
({Name, Val}, Map) ->
maps:put(Name, Val, Map)
end, ResMap, Terms).
%% @doc Include additional configuration files in the list of terms.
%% @spec ([term()]) -> [term()]
include_config_files(Terms) ->
{FileOpts, Terms1} =
lists:mapfoldl(
fun({include_config_file, _} = T, Ts) ->
{[transform_include_option(T)], Ts};
({include_config_file, _, _} = T, Ts) ->
{[transform_include_option(T)], Ts};
(T, Ts) ->
{[], [T|Ts]}
end, [], Terms),
Terms2 = lists:flatmap(
fun({File, Opts}) ->
include_config_file(File, Opts)
end, lists:flatten(FileOpts)),
M1 = merge_configs(Terms1, #{}),
M2 = merge_configs(Terms2, M1),
maps_to_lists(M2).
transform_include_option({include_config_file, File}) when is_list(File) ->
case is_string(File) of
true -> {File, []};
false -> File
end;
transform_include_option({include_config_file, Filename}) ->
{Filename, []};
transform_include_option({include_config_file, Filename, Options}) ->
{Filename, Options}.
include_config_file(Filename, Options) ->
Included_terms = get_plain_terms_file(Filename, [{include_files, true}, dont_halt_on_error]),
Disallow = proplists:get_value(disallow, Options, []),
Included_terms2 = delete_disallowed(Disallow, Included_terms),
Allow_only = proplists:get_value(allow_only, Options, all),
keep_only_allowed(Allow_only, Included_terms2).
%% @doc Filter from the list of terms the disallowed.
%% Returns a sublist of Terms without the ones which first element is
%% included in Disallowed.
%% @spec (Disallowed::[atom()], Terms::[term()]) -> [term()]
delete_disallowed(Disallowed, Terms) ->
lists:foldl(
fun(Dis, Ldis) ->
delete_disallowed2(Dis, Ldis)
end,
Terms,
Disallowed).
delete_disallowed2(Disallowed, [H|T]) ->
case element(1, H) of
Disallowed ->
?WARNING_MSG("The option '~p' is disallowed, "
"and will not be accepted", [Disallowed]),
delete_disallowed2(Disallowed, T);
_ ->
[H|delete_disallowed2(Disallowed, T)]
end;
delete_disallowed2(_, []) ->
[].
%% @doc Keep from the list only the allowed terms.
%% Returns a sublist of Terms with only the ones which first element is
%% included in Allowed.
%% @spec (Allowed::[atom()], Terms::[term()]) -> [term()]
keep_only_allowed(all, Terms) ->
Terms;
keep_only_allowed(Allowed, Terms) ->
{As, NAs} = lists:partition(
fun(Term) ->
lists:member(element(1, Term), Allowed)
end,
Terms),
[?WARNING_MSG("This option is not allowed, "
"and will not be accepted:~n~p", [NA])
|| NA <- NAs],
As.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% Support for Macro
%% @doc Replace the macros with their defined values.
%% @spec (Terms::[term()]) -> [term()]
replace_macros(Terms) ->
{TermsOthers, Macros} = split_terms_macros(Terms),
replace(TermsOthers, Macros).
%% @doc Split Terms into normal terms and macro definitions.
%% @spec (Terms) -> {Terms, Macros}
%% Terms = [term()]
%% Macros = [macro()]
split_terms_macros(Terms) ->
lists:foldl(
fun(Term, {TOs, Ms}) ->
case Term of
{define_macro, Key, Value} ->
case is_correct_macro({Key, Value}) of
true ->
{TOs, Ms++[{Key, Value}]};
false ->
exit({macro_not_properly_defined, Term})
end;
{define_macro, KeyVals} ->
case lists:all(fun is_correct_macro/1, KeyVals) of
true ->
{TOs, Ms ++ KeyVals};
false ->
exit({macros_not_properly_defined, Term})
end;
Term ->
{TOs ++ [Term], Ms}
end
end,
{[], []},
Terms).
is_correct_macro({Key, _Val}) ->
is_atom(Key) and is_all_uppercase(Key);
is_correct_macro(_) ->
false.
%% @doc Recursively replace in Terms macro usages with the defined value.
%% @spec (Terms, Macros) -> Terms
%% Terms = [term()]
%% Macros = [macro()]
replace([], _) ->
[];
replace([Term|Terms], Macros) ->
[replace_term(Term, Macros) | replace(Terms, Macros)];
replace(Term, Macros) ->
replace_term(Term, Macros).
replace_term(Key, Macros) when is_atom(Key) ->
case is_all_uppercase(Key) of
true ->
case proplists:get_value(Key, Macros) of
undefined -> exit({undefined_macro, Key});
Value -> Value
end;
false ->
Key
end;
replace_term({use_macro, Key, Value}, Macros) ->
proplists:get_value(Key, Macros, Value);
replace_term(Term, Macros) when is_list(Term) ->
replace(Term, Macros);
replace_term(Term, Macros) when is_tuple(Term) ->
List = tuple_to_list(Term),
List2 = replace(List, Macros),
list_to_tuple(List2);
replace_term(Term, _) ->
Term.
is_all_uppercase(Atom) ->
String = erlang:atom_to_list(Atom),
lists:all(fun(C) when C >= $a, C =< $z -> false;
(_) -> true
end, String).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% Process terms
process_term(Term, State) ->
case Term of
{host_config, HostTerms} ->
lists:foldl(
fun({Host, Terms}, AccState) ->
lists:foldl(fun(T, S) ->
process_host_term(T, Host, S, set)
end, AccState, Terms)
end, State, HostTerms);
{append_host_config, HostTerms} ->
lists:foldl(
fun({Host, Terms}, AccState) ->
lists:foldl(fun(T, S) ->
process_host_term(T, Host, S, append)
end, AccState, Terms)
end, State, HostTerms);
_ ->
process_host_term(Term, global, State, set)
end.
process_host_term(Term, Host, State, Action) ->
case Term of
{modules, Modules} when Action == set ->
set_option({modules, Host}, replace_modules(Modules), State);
{modules, Modules} when Action == append ->
append_option({modules, Host}, replace_modules(Modules), State);
{host, _} ->
State;
{hosts, _} ->
State;
{Opt, Val} when Action == set ->
set_option({rename_option(Opt), Host}, change_val(Opt, Val), State);
{Opt, Val} when Action == append ->
append_option({rename_option(Opt), Host}, change_val(Opt, Val), State);
Opt ->
?WARNING_MSG("Ignore invalid (outdated?) option ~p", [Opt]),
State
end.
rename_option(Option) when is_atom(Option) ->
case atom_to_list(Option) of
"odbc_" ++ T ->
NewOption = list_to_atom("sql_" ++ T),
?WARNING_MSG("Option '~s' is obsoleted, use '~s' instead",
[Option, NewOption]),
NewOption;
_ ->
Option
end;
rename_option(Option) ->
Option.
change_val(auth_method, Val) ->
prepare_opt_val(auth_method, Val,
fun(V) ->
L = if is_list(V) -> V;
true -> [V]
end,
lists:map(
fun(odbc) -> sql;
(internal) -> mnesia;
(A) when is_atom(A) -> A
end, L)
end, [mnesia]);
change_val(_Opt, Val) ->
Val.
set_option(Opt, Val, State) ->
State#state{opts = [#local_config{key = Opt, value = Val} |
State#state.opts]}.
append_option({Opt, Host}, Val, State) ->
GlobalVals = lists:flatmap(
fun(#local_config{key = {O, global}, value = V})
when O == Opt ->
if is_list(V) -> V;
true -> [V]
end;
(_) ->
[]
end, State#state.opts),
NewVal = if is_list(Val) -> Val ++ GlobalVals;
true -> [Val|GlobalVals]
end,
set_option({Opt, Host}, NewVal, State).
set_opts(State) ->
Opts = State#state.opts,
ets:insert(
ejabberd_options,
lists:map(
fun(#local_config{key = Key, value = Val}) ->
{Key, Val}
end, Opts)),
set_log_level().
set_log_level() ->
Level = get_option(loglevel, 4),
ejabberd_logger:set(Level).
add_global_option(Opt, Val) ->
add_option(Opt, Val).
add_local_option(Opt, Val) ->
add_option(Opt, Val).
add_option(Opt, Val) when is_atom(Opt) ->
add_option({Opt, global}, Val);
add_option({Opt, Host}, Val) ->
ets:insert(ejabberd_options, {{Opt, Host}, Val}),
ok.
-spec prepare_opt_val(any(), any(), check_fun(), any()) -> any().
prepare_opt_val(Opt, Val, F, Default) ->
Call = case F of
{Mod, Fun} ->
fun() -> Mod:Fun(Val) end;
_ ->
fun() -> F(Val) end
end,
try Call() of
Res ->
Res
catch {replace_with, NewRes} ->
NewRes;
{invalid_syntax, Error} ->
?WARNING_MSG("incorrect value '~s' of option '~s', "
"using '~s' as fallback: ~s",
[format_term(Val),
format_term(Opt),
format_term(Default),
Error]),
Default;
_:_ ->
?WARNING_MSG("incorrect value '~s' of option '~s', "
"using '~s' as fallback",
[format_term(Val),
format_term(Opt),
format_term(Default)]),
Default
end.
-type check_fun() :: fun((any()) -> any()) | {module(), atom()}.
-spec get_global_option(any(), check_fun()) -> any().
get_global_option(Opt, _) ->
get_option(Opt, undefined).
-spec get_global_option(any(), check_fun(), any()) -> any().
get_global_option(Opt, _, Default) ->
get_option(Opt, Default).
-spec get_local_option(any(), check_fun()) -> any().
get_local_option(Opt, _) ->
get_option(Opt, undefined).
-spec get_local_option(any(), check_fun(), any()) -> any().
get_local_option(Opt, _, Default) ->
get_option(Opt, Default).
-spec get_option(any()) -> any().
get_option(Opt) ->
get_option(Opt, undefined).
-spec get_option(any(), check_fun(), any()) -> any().
get_option(Opt, _, Default) ->
get_option(Opt, Default).
-spec get_option(any(), check_fun() | any()) -> any().
get_option(Opt, F) when is_function(F) ->
get_option(Opt, undefined);
get_option(Opt, Default) when is_atom(Opt) ->
get_option({Opt, global}, Default);
get_option(Opt, Default) ->
{Key, Host} = case Opt of
{O, global} when is_atom(O) -> Opt;
{O, H} when is_atom(O), is_binary(H) -> Opt;
_ ->
?WARNING_MSG("Option ~p has invalid (outdated?) "
"format. This is likely a bug", [Opt]),
{undefined, global}
end,
try ets:lookup_element(ejabberd_options, {Key, Host}, 2)
catch _:badarg when Host /= global ->
try ets:lookup_element(ejabberd_options, {Key, global}, 2)
catch _:badarg -> Default
end;
_:badarg ->
Default
end.
-spec has_option(atom() | {atom(), global | binary()}) -> any().
has_option(Opt) ->
get_option(Opt) /= undefined.
init_module_db_table(Modules) ->
%% Dirty hack for mod_pubsub
ets:insert(ejabberd_db_modules, {{mod_pubsub, mnesia}, true}),
ets:insert(ejabberd_db_modules, {{mod_pubsub, sql}, true}),
lists:foreach(
fun(M) ->
case re:split(atom_to_list(M), "_", [{return, list}]) of
[_] ->
ok;
Parts ->
[H|T] = lists:reverse(Parts),
Suffix = list_to_atom(H),
BareMod = list_to_atom(string:join(lists:reverse(T), "_")),
case is_behaviour(BareMod, M) of
true ->
ets:insert(ejabberd_db_modules,
{{BareMod, Suffix}, true});
false ->
ok
end
end
end, Modules).
is_behaviour(Behav, Mod) ->
try Mod:module_info(attributes) of
[] ->
%% Stripped module?
true;
Attrs ->
lists:any(
fun({behaviour, L}) -> lists:member(Behav, L);
({behavior, L}) -> lists:member(Behav, L);
(_) -> false
end, Attrs)
catch _:_ ->
true
end.
-spec v_db(module(), atom()) -> atom().
v_db(Mod, internal) -> v_db(Mod, mnesia);
v_db(Mod, odbc) -> v_db(Mod, sql);
v_db(Mod, Type) ->
case ets:member(ejabberd_db_modules, {Mod, Type}) of
true -> Type;
false -> erlang:error(badarg)
end.
-spec v_dbs(module()) -> [atom()].
v_dbs(Mod) ->
ets:select(
ejabberd_db_modules,
ets:fun2ms(
fun({{M, Type}, _}) when M == Mod ->
Type
end)).
-spec v_dbs_mods(module()) -> [module()].
v_dbs_mods(Mod) ->
lists:map(fun(M) ->
binary_to_atom(<<(atom_to_binary(Mod, utf8))/binary, "_",
(atom_to_binary(M, utf8))/binary>>, utf8)
end, v_dbs(Mod)).
-spec default_db(module()) -> atom().
default_db(Module) ->
default_db(global, Module).
-spec default_db(binary() | global, module()) -> atom().
default_db(Host, Module) ->
default_db(default_db, Host, Module).
-spec default_ram_db(module()) -> atom().
default_ram_db(Module) ->
default_ram_db(global, Module).
-spec default_ram_db(binary() | global, module()) -> atom().
default_ram_db(Host, Module) ->
default_db(default_ram_db, Host, Module).
-spec default_db(default_db | default_ram_db, binary() | global, module()) -> atom().
default_db(Opt, Host, Module) ->
case get_option({Opt, Host}) of
undefined ->
mnesia;
DBType ->
try
v_db(Module, DBType)
catch error:badarg ->
?WARNING_MSG("Module '~s' doesn't support database '~s' "
"defined in option '~s', using "
"'mnesia' as fallback", [Module, DBType, Opt]),
mnesia
end
end.
get_modules() ->
{ok, Mods} = application:get_key(ejabberd, modules),
ExtMods = [Name || {Name, _Details} <- ext_mod:installed()],
case application:get_env(ejabberd, external_beams) of
{ok, Path} ->
case lists:member(Path, code:get_path()) of
true -> ok;
false -> code:add_patha(Path)
end,
Beams = filelib:wildcard(filename:join(Path, "*\.beam")),
CustMods = [list_to_atom(filename:rootname(filename:basename(Beam)))
|| Beam <- Beams],
CustMods ++ ExtMods ++ Mods;
_ ->
ExtMods ++ Mods
end.
get_modules_with_options(Modules) ->
lists:foldl(
fun(Mod, D) ->
case is_behaviour(?MODULE, Mod) orelse Mod == ?MODULE of
true ->
try Mod:opt_type('') of
Opts when is_list(Opts) ->
lists:foldl(
fun(Opt, Acc) ->
dict:append(Opt, Mod, Acc)
end, D, Opts)
catch _:undef ->
D
end;
false ->
D
end
end, dict:new(), Modules).
validate_opts(#state{opts = Opts} = State, ModOpts) ->
NewOpts = lists:filtermap(
fun(#local_config{key = {Opt, _Host}, value = Val} = In) ->
case dict:find(Opt, ModOpts) of
{ok, [Mod|_]} ->
VFun = Mod:opt_type(Opt),
try VFun(Val) of
NewVal ->
{true, In#local_config{value = NewVal}}
catch {invalid_syntax, Error} ->
?ERROR_MSG("ignoring option '~s' with "
"invalid value: ~p: ~s",
[Opt, Val, Error]),
false;
_:_ ->
?ERROR_MSG("ignoring option '~s' with "
"invalid value: ~p",
[Opt, Val]),
false
end;
_ ->
?ERROR_MSG("unknown option '~s' will be likely"
" ignored", [Opt]),
true
end
end, Opts),
State#state{opts = NewOpts}.
%% @spec (Path::string()) -> true | false
is_file_readable(Path) ->
case file:read_file_info(Path) of
{ok, FileInfo} ->
case {FileInfo#file_info.type, FileInfo#file_info.access} of
{regular, read} -> true;
{regular, read_write} -> true;
_ -> false
end;
{error, _Reason} ->
false
end.
get_version() ->
case application:get_key(ejabberd, vsn) of
undefined -> "";
{ok, Vsn} -> list_to_binary(Vsn)
end.
-spec get_myhosts() -> [binary()].
get_myhosts() ->
get_option(hosts).
-spec get_mylang() -> binary().
get_mylang() ->
get_lang(global).
-spec get_lang(global | binary()) -> binary().
get_lang(Host) ->
get_option({language, Host}, <<"en">>).
replace_module(mod_announce_odbc) -> {mod_announce, sql};
replace_module(mod_blocking_odbc) -> {mod_blocking, sql};
replace_module(mod_caps_odbc) -> {mod_caps, sql};
replace_module(mod_irc_odbc) -> {mod_irc, sql};
replace_module(mod_last_odbc) -> {mod_last, sql};
replace_module(mod_muc_odbc) -> {mod_muc, sql};
replace_module(mod_offline_odbc) -> {mod_offline, sql};
replace_module(mod_privacy_odbc) -> {mod_privacy, sql};
replace_module(mod_private_odbc) -> {mod_private, sql};
replace_module(mod_roster_odbc) -> {mod_roster, sql};
replace_module(mod_shared_roster_odbc) -> {mod_shared_roster, sql};
replace_module(mod_vcard_odbc) -> {mod_vcard, sql};
replace_module(mod_vcard_ldap) -> {mod_vcard, ldap};
replace_module(mod_vcard_xupdate_odbc) -> mod_vcard_xupdate;
replace_module(mod_pubsub_odbc) -> {mod_pubsub, sql};
replace_module(mod_http_bind) -> mod_bosh;
replace_module(Module) ->
case is_elixir_module(Module) of
true -> expand_elixir_module(Module);
false -> Module
end.
replace_modules(Modules) ->
lists:map(
fun({Module, Opts}) ->
case replace_module(Module) of
{NewModule, DBType} ->
emit_deprecation_warning(Module, NewModule, DBType),
NewOpts = [{db_type, DBType} |
lists:keydelete(db_type, 1, Opts)],
{NewModule, transform_module_options(Module, NewOpts)};
NewModule ->
if Module /= NewModule ->
emit_deprecation_warning(Module, NewModule);
true ->
ok
end,
{NewModule, transform_module_options(Module, Opts)}
end
end, Modules).
%% Elixir module naming
%% ====================
-ifdef(ELIXIR_ENABLED).
is_elixir_enabled() ->
true.
-else.
is_elixir_enabled() ->
false.
-endif.
is_using_elixir_config() ->
case is_elixir_enabled() of
true ->
Config = get_ejabberd_config_path(),
'Elixir.Ejabberd.ConfigUtil':is_elixir_config(Config);
false ->
false
end.
%% If module name start with uppercase letter, this is an Elixir module:
is_elixir_module(Module) ->
case atom_to_list(Module) of
[H|_] when H >= 65, H =< 90 -> true;
_ ->false
end.
%% We assume we know this is an elixir module
expand_elixir_module(Module) ->
case atom_to_list(Module) of
%% Module name already specified as an Elixir from Erlang module name
"Elixir." ++ _ -> Module;
%% if start with uppercase letter, this is an Elixir module: Append 'Elixir.' to module name.
ModuleString ->
list_to_atom("Elixir." ++ ModuleString)
end.
strings_to_binary([]) ->
[];
strings_to_binary(L) when is_list(L) ->
case is_string(L) of
true ->
list_to_binary(L);
false ->
strings_to_binary1(L)
end;
strings_to_binary({A, B, C, D}) when
is_integer(A), is_integer(B), is_integer(C), is_integer(D) ->
{A, B, C ,D};
strings_to_binary(T) when is_tuple(T) ->
list_to_tuple(strings_to_binary1(tuple_to_list(T)));
strings_to_binary(X) ->
X.
strings_to_binary1([El|L]) ->
[strings_to_binary(El)|strings_to_binary1(L)];
strings_to_binary1([]) ->
[];
strings_to_binary1(T) ->
T.
is_string([C|T]) when (C >= 0) and (C =< 255) ->
is_string(T);
is_string([]) ->
true;
is_string(_) ->
false.
binary_to_strings(B) when is_binary(B) ->
binary_to_list(B);
binary_to_strings([H|T]) ->
[binary_to_strings(H)|binary_to_strings(T)];
binary_to_strings(T) when is_tuple(T) ->
list_to_tuple(binary_to_strings(tuple_to_list(T)));
binary_to_strings(T) ->
T.
format_term(Bin) when is_binary(Bin) ->
io_lib:format("\"~s\"", [Bin]);
format_term(S) when is_list(S), S /= [] ->
case lists:all(fun(C) -> (C>=0) and (C=<255) end, S) of
true ->
io_lib:format("\"~s\"", [S]);
false ->
io_lib:format("~p", [binary_to_strings(S)])
end;
format_term(T) ->
io_lib:format("~p", [binary_to_strings(T)]).
transform_terms(Terms) ->
%% We could check all ejabberd beams, but this
%% slows down start-up procedure :(
Mods = [mod_register,
ejabberd_s2s,
ejabberd_listener,
ejabberd_sql_sup,
shaper,
ejabberd_s2s_out,
acl,
ejabberd_config],
collect_options(transform_terms(Mods, Terms)).
transform_terms([Mod|Mods], Terms) ->
case catch Mod:transform_options(Terms) of
{'EXIT', _} = Err ->
?ERROR_MSG("Failed to transform terms by ~p: ~p", [Mod, Err]),
transform_terms(Mods, Terms);
NewTerms ->
transform_terms(Mods, NewTerms)
end;
transform_terms([], NewTerms) ->
NewTerms.
transform_module_options(Module, Opts) ->
Opts1 = gen_iq_handler:transform_module_options(Opts),
try
Module:transform_module_options(Opts1)
catch error:undef ->
Opts1
end.
compact(Cfg) ->
Opts = [{K, V} || #local_config{key = K, value = V} <- Cfg],
{GOpts, HOpts} = split_by_hosts(Opts),
[#local_config{key = {O, global}, value = V} || {O, V} <- GOpts] ++
lists:flatmap(
fun({Host, OptVal}) ->
case lists:member(OptVal, GOpts) of
true ->
[];
false ->
[#local_config{key = {Opt, Host}, value = Val}
|| {Opt, Val} <- OptVal]
end
end, lists:flatten(HOpts)).
split_by_hosts(Opts) ->
Opts1 = orddict:to_list(
lists:foldl(
fun({{Opt, Host}, Val}, D) ->
orddict:append(Host, {Opt, Val}, D)
end, orddict:new(), Opts)),
case lists:keytake(global, 1, Opts1) of
{value, {global, GlobalOpts}, HostOpts} ->
{GlobalOpts, HostOpts};
_ ->
{[], Opts1}
end.
collect_options(Opts) ->
{D, InvalidOpts} =
lists:foldl(
fun({K, V}, {D, Os}) when is_list(V) ->
{orddict:append_list(K, V, D), Os};
({K, V}, {D, Os}) ->
{orddict:store(K, V, D), Os};
(Opt, {D, Os}) ->
{D, [Opt|Os]}
end, {orddict:new(), []}, Opts),
InvalidOpts ++ orddict:to_list(D).
transform_options(Opts) ->
Opts1 = lists:foldl(fun transform_options/2, [], Opts),
{HOpts, Opts2} = lists:mapfoldl(
fun({host_config, O}, Os) ->
{[O], Os};
(O, Os) ->
{[], [O|Os]}
end, [], Opts1),
{AHOpts, Opts3} = lists:mapfoldl(
fun({append_host_config, O}, Os) ->
{[O], Os};
(O, Os) ->
{[], [O|Os]}
end, [], Opts2),
HOpts1 = case collect_options(lists:flatten(HOpts)) of
[] ->
[];
HOs ->
[{host_config,
[{H, transform_terms(O)} || {H, O} <- HOs]}]
end,
AHOpts1 = case collect_options(lists:flatten(AHOpts)) of
[] ->
[];
AHOs ->
[{append_host_config,
[{H, transform_terms(O)} || {H, O} <- AHOs]}]
end,
HOpts1 ++ AHOpts1 ++ Opts3.
transform_options({domain_certfile, Domain, CertFile}, Opts) ->
?WARNING_MSG("Option 'domain_certfile' now should be defined "
"per virtual host or globally. The old format is "
"still supported but it is better to fix your config", []),
[{host_config, [{Domain, [{domain_certfile, CertFile}]}]}|Opts];
transform_options(Opt, Opts) when Opt == override_global;
Opt == override_local;
Opt == override_acls ->
?WARNING_MSG("Ignoring '~s' option which has no effect anymore", [Opt]),
Opts;
transform_options({node_start, {_, _, _} = Now}, Opts) ->
?WARNING_MSG("Old 'node_start' format detected. This is still supported "
"but it is better to fix your config.", []),
[{node_start, now_to_seconds(Now)}|Opts];
transform_options({host_config, Host, HOpts}, Opts) ->
{AddOpts, HOpts1} =
lists:mapfoldl(
fun({{add, Opt}, Val}, Os) ->
?WARNING_MSG("Option 'add' is deprecated. "
"The option is still supported "
"but it is better to fix your config: "
"use 'append_host_config' instead.", []),
{[{Opt, Val}], Os};
(O, Os) ->
{[], [O|Os]}
end, [], HOpts),
[{append_host_config, [{Host, lists:flatten(AddOpts)}]},
{host_config, [{Host, HOpts1}]}|Opts];
transform_options({define_macro, Macro, Val}, Opts) ->
[{define_macro, [{Macro, Val}]}|Opts];
transform_options({include_config_file, _} = Opt, Opts) ->
[{include_config_file, [transform_include_option(Opt)]} | Opts];
transform_options({include_config_file, _, _} = Opt, Opts) ->
[{include_config_file, [transform_include_option(Opt)]} | Opts];
transform_options(Opt, Opts) ->
[Opt|Opts].
emit_deprecation_warning(Module, NewModule, DBType) ->
?WARNING_MSG("Module ~s is deprecated, use ~s with 'db_type: ~s'"
" instead", [Module, NewModule, DBType]).
emit_deprecation_warning(Module, NewModule) ->
case is_elixir_module(NewModule) of
%% Do not emit deprecation warning for Elixir
true -> ok;
false ->
?WARNING_MSG("Module ~s is deprecated, use ~s instead",
[Module, NewModule])
end.
-spec now_to_seconds(erlang:timestamp()) -> non_neg_integer().
now_to_seconds({MegaSecs, Secs, _MicroSecs}) ->
MegaSecs * 1000000 + Secs.
-spec opt_type(hide_sensitive_log_data) -> fun((boolean()) -> boolean());
(hosts) -> fun(([binary()]) -> [binary()]);
(language) -> fun((binary()) -> binary());
(max_fsm_queue) -> fun((pos_integer()) -> pos_integer());
(default_db) -> fun((atom()) -> atom());
(default_ram_db) -> fun((atom()) -> atom());
(loglevel) -> fun((0..5) -> 0..5);
(queue_dir) -> fun((binary()) -> binary());
(queue_type) -> fun((ram | file) -> ram | file);
(use_cache) -> fun((boolean()) -> boolean());
(cache_size) -> fun((timeout()) -> timeout());
(cache_missed) -> fun((boolean()) -> boolean());
(cache_life_time) -> fun((timeout()) -> timeout());
(shared_key) -> fun((binary()) -> binary());
(node_start) -> fun((non_neg_integer()) -> non_neg_integer());
(atom()) -> [atom()].
opt_type(hide_sensitive_log_data) ->
fun (H) when is_boolean(H) -> H end;
opt_type(hosts) ->
fun(L) ->
[iolist_to_binary(H) || H <- L]
end;
opt_type(language) ->
fun iolist_to_binary/1;
opt_type(max_fsm_queue) ->
fun (I) when is_integer(I), I > 0 -> I end;
opt_type(default_db) ->
fun(T) when is_atom(T) -> T end;
opt_type(default_ram_db) ->
fun(T) when is_atom(T) -> T end;
opt_type(loglevel) ->
fun (P) when P >= 0, P =< 5 -> P end;
opt_type(queue_dir) ->
fun iolist_to_binary/1;
opt_type(queue_type) ->
fun(ram) -> ram; (file) -> file end;
opt_type(use_cache) ->
fun(B) when is_boolean(B) -> B end;
opt_type(cache_size) ->
fun(I) when is_integer(I), I>0 -> I;
(infinity) -> infinity;
(unlimited) -> infinity
end;
opt_type(cache_missed) ->
fun(B) when is_boolean(B) -> B end;
opt_type(cache_life_time) ->
fun(I) when is_integer(I), I>0 -> I;
(infinity) -> infinity;
(unlimited) -> infinity
end;
opt_type(negotiation_timeout) ->
fun(T) when T > 0 -> T end;
opt_type(shared_key) ->
fun iolist_to_binary/1;
opt_type(node_start) ->
fun(I) when is_integer(I), I>=0 -> I end;
opt_type(validate_stream) ->
fun(B) when is_boolean(B) -> B end;
opt_type(_) ->
[hide_sensitive_log_data, hosts, language, max_fsm_queue,
default_db, default_ram_db, queue_type, queue_dir, loglevel,
use_cache, cache_size, cache_missed, cache_life_time,
shared_key, node_start, validate_stream, negotiation_timeout].
-spec may_hide_data(any()) -> any().
may_hide_data(Data) ->
case get_option(hide_sensitive_log_data, false) of
false ->
Data;
true ->
"hidden_by_ejabberd"
end.
-spec fsm_limit_opts([proplists:property()]) -> [{max_queue, pos_integer()}].
fsm_limit_opts(Opts) ->
case lists:keyfind(max_fsm_queue, 1, Opts) of
{_, I} when is_integer(I), I>0 ->
[{max_queue, I}];
false ->
case get_option(max_fsm_queue) of
undefined -> [];
N -> [{max_queue, N}]
end
end.
-spec queue_dir() -> binary() | undefined.
queue_dir() ->
get_option(queue_dir).
-spec default_queue_type(binary()) -> ram | file.
default_queue_type(Host) ->
get_option({queue_type, Host}, ram).
-spec use_cache(binary() | global) -> boolean().
use_cache(Host) ->
get_option({use_cache, Host}, true).
-spec cache_size(binary() | global) -> pos_integer() | infinity.
cache_size(Host) ->
get_option({cache_size, Host}, 1000).
-spec cache_missed(binary() | global) -> boolean().
cache_missed(Host) ->
get_option({cache_missed, Host}, true).
-spec cache_life_time(binary() | global) -> pos_integer() | infinity.
%% NOTE: the integer value returned is in *seconds*
cache_life_time(Host) ->
get_option({cache_life_time, Host}, 3600).
-spec codec_options(binary() | global) -> [xmpp:decode_option()].
codec_options(Host) ->
case get_option({validate_stream, Host}, false) of
true -> [];
false -> [ignore_els]
end.
-spec negotiation_timeout() -> pos_integer().
negotiation_timeout() ->
timer:seconds(get_option(negotiation_timeout, 30)).
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