ensure the mqtt listener is started successfully
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Feng Lee
parent
fb7a5d1ccf
commit
0aa8a82e59
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@ -187,7 +187,7 @@ start_listener({https, ListenOn, Opts}) ->
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start_listener(Protocol, ListenOn, Opts) ->
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MFArgs = {emqttd_client, start_link, [emqttd:env(mqtt)]},
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esockd:open(Protocol, ListenOn, merge_sockopts(Opts), MFArgs).
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{ok, _} = esockd:open(Protocol, ListenOn, merge_sockopts(Opts), MFArgs).
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merge_sockopts(Options) ->
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SockOpts = emqttd_opts:merge(?MQTT_SOCKOPTS,
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@ -1,140 +0,0 @@
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%%--------------------------------------------------------------------
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%% Copyright (c) 2012-2016 Feng Lee <feng@emqtt.io>.
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%%
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%% Licensed under the Apache License, Version 2.0 (the "License");
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%% you may not use this file except in compliance with the License.
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%% You may obtain a copy of the License at
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%%
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%% http://www.apache.org/licenses/LICENSE-2.0
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%%
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%% Unless required by applicable law or agreed to in writing, software
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%% distributed under the License is distributed on an "AS IS" BASIS,
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%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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%% See the License for the specific language governing permissions and
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%% limitations under the License.
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%%--------------------------------------------------------------------
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-module(esockd_access).
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-type cidr() :: string().
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-type rule() :: {allow, all} |
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{allow, cidr()} |
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{deny, all} |
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{deny, cidr()}.
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-type range() :: {cidr(), pos_integer(), pos_integer()}.
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-export_type([cidr/0, range/0, rule/0]).
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-type range_rule() :: {allow, all} |
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{allow, range()} |
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{deny, all} |
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{deny, range()}.
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-export([rule/1, match/2, range/1, mask/1, atoi/1, itoa/1]).
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%%------------------------------------------------------------------------------
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%% @doc
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%% Build CIDR, Make rule.
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%%
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%% @end
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%%------------------------------------------------------------------------------
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-spec rule(rule()) -> range_rule().
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rule({allow, all}) ->
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{allow, all};
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rule({allow, CIDR}) when is_list(CIDR) ->
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rule(allow, CIDR);
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rule({deny, CIDR}) when is_list(CIDR) ->
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rule(deny, CIDR);
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rule({deny, all}) ->
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{deny, all}.
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rule(Type, CIDR) when is_list(CIDR) ->
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{Start, End} = range(CIDR), {Type, {CIDR, Start, End}}.
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%%------------------------------------------------------------------------------
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%% @doc
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%% Match Addr with Access Rules.
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%%
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%% @end
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%%------------------------------------------------------------------------------
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-spec match(inet:ip_address(), [range_rule()]) -> {matched, allow} | {matched, deny} | nomatch.
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match(Addr, Rules) when is_tuple(Addr) ->
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match2(atoi(Addr), Rules).
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match2(_I, []) ->
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nomatch;
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match2(_I, [{allow, all}|_]) ->
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{matched, allow};
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match2(I, [{allow, {_, Start, End}}|_]) when I >= Start, I =< End ->
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{matched, allow};
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match2(I, [{allow, {_, _Start, _End}}|Rules]) ->
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match2(I, Rules);
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match2(I, [{deny, {_, Start, End}}|_]) when I >= Start, I =< End ->
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{matched, deny};
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match2(I, [{deny, {_, _Start, _End}}|Rules]) ->
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match2(I, Rules);
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match2(_I, [{deny, all}|_]) ->
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{matched, deny}.
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%%------------------------------------------------------------------------------
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%% @doc
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%% CIDR range.
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%%
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%% @end
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%%------------------------------------------------------------------------------
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-spec range(cidr()) -> {pos_integer(), pos_integer()}.
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range(CIDR) ->
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case string:tokens(CIDR, "/") of
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[Addr] ->
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{ok, IP} = inet:getaddr(Addr, inet),
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{atoi(IP), atoi(IP)};
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[Addr, Mask] ->
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{ok, IP} = inet:getaddr(Addr, inet),
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{Start, End} = subnet(IP, mask(list_to_integer(Mask))),
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{Start, End}
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end.
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subnet(IP, Mask) ->
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Start = atoi(IP) band Mask,
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End = Start bor (Mask bxor 16#FFFFFFFF),
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{Start, End}.
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%%------------------------------------------------------------------------------
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%% @doc
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%% Mask Int
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%%
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%% @end
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%%------------------------------------------------------------------------------
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-spec mask(0..32) -> 0..16#FFFFFFFF.
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mask(0) ->
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16#00000000;
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mask(32) ->
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16#FFFFFFFF;
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mask(N) when N >= 1, N =< 31 ->
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lists:foldl(fun(I, Mask) -> (1 bsl I) bor Mask end, 0, lists:seq(32 - N, 31)).
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%%------------------------------------------------------------------------------
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%% @doc
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%% Addr to Integer.
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%%
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%% @end
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%%------------------------------------------------------------------------------
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atoi({A, B, C, D}) ->
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(A bsl 24) + (B bsl 16) + (C bsl 8) + D.
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%%------------------------------------------------------------------------------
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%% @doc
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%% Integer to Addr.
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%%
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%% @end
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%%------------------------------------------------------------------------------
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itoa(I) ->
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A = (I bsr 24) band 16#FF,
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B = (I bsr 16) band 16#FF,
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C = (I bsr 8) band 16#FF,
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D = I band 16#FF,
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{A, B, C, D}.
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