mirror of
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Add MQTT support
This commit is contained in:
Evgeny Khramtsov
parent
3491fa3fea
commit
a3df791373
183
include/mqtt.hrl
Normal file
183
include/mqtt.hrl
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@ -0,0 +1,183 @@
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%%%-------------------------------------------------------------------
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%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
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%%% @copyright (C) 2002-2019 ProcessOne, SARL. All Rights Reserved.
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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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%%%-------------------------------------------------------------------
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-define(MQTT_VERSION_4, 4).
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-define(MQTT_VERSION_5, 5).
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-record(connect, {proto_level = 4 :: non_neg_integer(),
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will :: undefined | publish(),
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clean_start = true :: boolean(),
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keep_alive = 0 :: non_neg_integer(),
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client_id = <<>> :: binary(),
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username = <<>> :: binary(),
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password = <<>> :: binary(),
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will_properties = #{} :: properties(),
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properties = #{} :: properties()}).
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-record(connack, {session_present = false :: boolean(),
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code = success :: reason_code(),
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properties = #{} :: properties()}).
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-record(publish, {id :: undefined | non_neg_integer(),
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dup = false :: boolean(),
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qos = 0 :: qos(),
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retain = false :: boolean(),
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topic :: binary(),
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payload :: binary(),
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properties = #{} :: properties(),
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meta = #{} :: map()}).
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-record(puback, {id :: non_neg_integer(),
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code = success :: reason_code(),
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properties = #{} :: properties()}).
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-record(pubrec, {id :: non_neg_integer(),
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code = success :: reason_code(),
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properties = #{} :: properties()}).
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-record(pubrel, {id :: non_neg_integer(),
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code = success :: reason_code(),
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properties = #{} :: properties(),
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meta = #{} :: map()}).
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-record(pubcomp, {id :: non_neg_integer(),
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code = success :: reason_code(),
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properties = #{} :: properties()}).
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-record(subscribe, {id :: non_neg_integer(),
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filters :: [{binary(), sub_opts()}],
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properties = #{} :: properties(),
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meta = #{} :: map()}).
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-record(suback, {id :: non_neg_integer(),
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codes = [] :: [char() | reason_code()],
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properties = #{} :: properties()}).
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-record(unsubscribe, {id :: non_neg_integer(),
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filters :: [binary()],
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properties = #{} :: properties(),
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meta = #{} :: map()}).
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-record(unsuback, {id :: non_neg_integer(),
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codes = [] :: [reason_code()],
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properties = #{} :: properties()}).
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-record(pingreq, {meta = #{} :: map()}).
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-record(pingresp, {}).
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-record(disconnect, {code = 'normal-disconnection' :: reason_code(),
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properties = #{} :: properties()}).
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-record(auth, {code = success :: reason_code(),
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properties = #{} :: properties()}).
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-record(sub_opts, {qos = 0 :: qos(),
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no_local = false :: boolean(),
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retain_as_published = false :: boolean(),
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retain_handling = 0 :: 0..2}).
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-type qos() :: 0|1|2.
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-type sub_opts() :: #sub_opts{}.
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-type utf8_pair() :: {binary(), binary()}.
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-type properties() :: map().
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-type property() :: assigned_client_identifier |
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authentication_data |
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authentication_method |
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content_type |
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correlation_data |
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maximum_packet_size |
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maximum_qos |
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message_expiry_interval |
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payload_format_indicator |
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reason_string |
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receive_maximum |
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request_problem_information |
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request_response_information |
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response_information |
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response_topic |
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retain_available |
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server_keep_alive |
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server_reference |
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session_expiry_interval |
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shared_subscription_available |
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subscription_identifier |
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subscription_identifiers_available |
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topic_alias |
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topic_alias_maximum |
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user_property |
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wildcard_subscription_available |
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will_delay_interval.
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-type reason_code() :: 'success' |
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'normal-disconnection' |
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'granted-qos-0' |
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'granted-qos-1' |
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'granted-qos-2' |
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'disconnect-with-will-message' |
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'no-matching-subscribers' |
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'no-subscription-existed' |
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'continue-authentication' |
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're-authenticate' |
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'unspecified-error' |
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'malformed-packet' |
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'protocol-error' |
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'implementation-specific-error' |
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'unsupported-protocol-version' |
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'client-identifier-not-valid' |
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'bad-user-name-or-password' |
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'not-authorized' |
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'server-unavailable' |
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'server-busy' |
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'banned' |
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'server-shutting-down' |
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'bad-authentication-method' |
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'keep-alive-timeout' |
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'session-taken-over' |
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'topic-filter-invalid' |
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'topic-name-invalid' |
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'packet-identifier-in-use' |
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'packet-identifier-not-found' |
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'receive-maximum-exceeded' |
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'topic-alias-invalid' |
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'packet-too-large' |
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'message-rate-too-high' |
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'quota-exceeded' |
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'administrative-action' |
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'payload-format-invalid' |
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'retain-not-supported' |
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'qos-not-supported' |
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'use-another-server' |
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'server-moved' |
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'shared-subscriptions-not-supported' |
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'connection-rate-exceeded' |
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'maximum-connect-time' |
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'subscription-identifiers-not-supported' |
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'wildcard-subscriptions-not-supported'.
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-type connect() :: #connect{}.
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-type connack() :: #connack{}.
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-type publish() :: #publish{}.
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-type puback() :: #puback{}.
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-type pubrel() :: #pubrel{}.
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-type pubrec() :: #pubrec{}.
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-type pubcomp() :: #pubcomp{}.
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-type subscribe() :: #subscribe{}.
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-type suback() :: #suback{}.
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-type unsubscribe() :: #unsubscribe{}.
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-type unsuback() :: #unsuback{}.
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-type pingreq() :: #pingreq{}.
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-type pingresp() :: #pingresp{}.
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-type disconnect() :: #disconnect{}.
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-type auth() :: #auth{}.
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-type mqtt_packet() :: connect() | connack() | publish() | puback() |
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pubrel() | pubrec() | pubcomp() | subscribe() |
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suback() | unsubscribe() | unsuback() | pingreq() |
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pingresp() | disconnect() | auth().
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-type mqtt_version() :: ?MQTT_VERSION_4 | ?MQTT_VERSION_5.
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@ -31,6 +31,7 @@
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{pkix, ".*", {git, "https://github.com/processone/pkix", {tag, "1.0.0"}}},
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{jose, ".*", {git, "https://github.com/potatosalad/erlang-jose", {tag, "1.8.4"}}},
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{eimp, ".*", {git, "https://github.com/processone/eimp", {tag, "1.0.9"}}},
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{mqtree, ".*", {git, "https://github.com/processone/mqtree", {tag, "1.0.1"}}},
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{if_var_true, stun, {stun, ".*", {git, "https://github.com/processone/stun", {tag, "1.0.26"}}}},
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{if_var_true, sip, {esip, ".*", {git, "https://github.com/processone/esip", {tag, "1.0.27"}}}},
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{if_var_true, mysql, {p1_mysql, ".*", {git, "https://github.com/processone/p1_mysql",
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561
src/mod_mqtt.erl
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561
src/mod_mqtt.erl
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@ -0,0 +1,561 @@
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%%%-------------------------------------------------------------------
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%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
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%%% @copyright (C) 2002-2019 ProcessOne, SARL. All Rights Reserved.
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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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%%%-------------------------------------------------------------------
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-module(mod_mqtt).
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-behaviour(p1_server).
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-behaviour(gen_mod).
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-behaviour(ejabberd_listener).
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%% gen_mod API
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-export([start/2, stop/1, reload/3, depends/2, mod_options/1, mod_opt_type/1]).
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%% gen_server callbacks
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-export([init/1, handle_call/3, handle_cast/2, handle_info/2,
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terminate/2, code_change/3]).
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%% ejabberd_listener API
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-export([start_link/2, listen_opt_type/1, listen_options/0, accept/1]).
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%% Legacy ejabberd_listener API
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-export([become_controller/2, socket_type/0]).
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%% API
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-export([open_session/1, close_session/1, lookup_session/1,
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publish/3, subscribe/4, unsubscribe/2, select_retained/4,
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check_publish_access/2, check_subscribe_access/2]).
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-include("logger.hrl").
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-include("mqtt.hrl").
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-define(MQTT_TOPIC_CACHE, mqtt_topic_cache).
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-define(MQTT_PAYLOAD_CACHE, mqtt_payload_cache).
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-type continuation() :: term().
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-type seconds() :: non_neg_integer().
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%% RAM backend callbacks
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-callback init() -> ok | {error, any()}.
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-callback open_session(jid:ljid()) -> ok | {error, db_failure}.
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-callback close_session(jid:ljid()) -> ok | {error, db_failure}.
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-callback lookup_session(jid:ljid()) -> {ok, pid()} | {error, notfound | db_failure}.
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-callback subscribe(jid:ljid(), binary(), sub_opts(), non_neg_integer()) -> ok | {error, db_failure}.
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-callback unsubscribe(jid:ljid(), binary()) -> ok | {error, notfound | db_failure}.
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-callback find_subscriber(binary(), binary() | continuation()) ->
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{ok, {pid(), qos()}, continuation()} | {error, notfound | db_failure}.
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%% Disc backend callbacks
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-callback init(binary(), gen_mod:opts()) -> ok | {error, any()}.
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-callback publish(jid:ljid(), binary(), binary(), qos(), properties(), seconds()) ->
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ok | {error, db_failure}.
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-callback delete_published(jid:ljid(), binary()) -> ok | {error, db_failure}.
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-callback lookup_published(jid:ljid(), binary()) ->
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{ok, {binary(), qos(), properties(), seconds()}} |
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{error, notfound | db_failure}.
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-callback list_topics(binary()) -> {ok, [binary()]} | {error, db_failure}.
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-callback use_cache(binary()) -> boolean().
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-callback cache_nodes(binary()) -> [node()].
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-optional_callbacks([use_cache/1, cache_nodes/1]).
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-record(state, {}).
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%%%===================================================================
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%%% API
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%%%===================================================================
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start({SockMod, Sock}, ListenOpts) ->
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mod_mqtt_session:start(SockMod, Sock, ListenOpts);
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start(Host, Opts) ->
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gen_mod:start_child(?MODULE, Host, Opts).
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start_link({SockMod, Sock}, ListenOpts) ->
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mod_mqtt_session:start_link(SockMod, Sock, ListenOpts).
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stop(Host) ->
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gen_mod:stop_child(?MODULE, Host).
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reload(_Host, _NewOpts, _OldOpts) ->
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ok.
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depends(_Host, _Opts) ->
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[].
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socket_type() ->
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raw.
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become_controller(Pid, _) ->
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accept(Pid).
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accept(Pid) ->
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mod_mqtt_session:accept(Pid).
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open_session({U, S, R}) ->
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Mod = gen_mod:ram_db_mod(S, ?MODULE),
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Mod:open_session({U, S, R}).
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close_session({U, S, R}) ->
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Mod = gen_mod:ram_db_mod(S, ?MODULE),
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Mod:close_session({U, S, R}).
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lookup_session({U, S, R}) ->
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Mod = gen_mod:ram_db_mod(S, ?MODULE),
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Mod:lookup_session({U, S, R}).
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-spec publish(jid:ljid(), publish(), seconds()) ->
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{ok, non_neg_integer()} | {error, db_failure | publish_forbidden}.
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publish({_, S, _} = USR, Pkt, ExpiryTime) ->
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case check_publish_access(Pkt#publish.topic, USR) of
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allow ->
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case retain(USR, Pkt, ExpiryTime) of
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ok ->
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Mod = gen_mod:ram_db_mod(S, ?MODULE),
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route(Mod, S, Pkt, ExpiryTime);
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{error, _} = Err ->
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Err
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end;
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deny ->
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{error, publish_forbidden}
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end.
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-spec subscribe(jid:ljid(), binary(), sub_opts(), non_neg_integer()) ->
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ok | {error, db_failure | subscribe_forbidden}.
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subscribe({_, S, _} = USR, TopicFilter, SubOpts, ID) ->
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Mod = gen_mod:ram_db_mod(S, ?MODULE),
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Limit = gen_mod:get_module_opt(S, ?MODULE, max_topic_depth),
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case check_topic_depth(TopicFilter, Limit) of
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allow ->
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case check_subscribe_access(TopicFilter, USR) of
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allow ->
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Mod:subscribe(USR, TopicFilter, SubOpts, ID);
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deny ->
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{error, subscribe_forbidden}
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end;
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deny ->
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{error, subscribe_forbidden}
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end.
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-spec unsubscribe(jid:ljid(), binary()) -> ok | {error, notfound | db_failure}.
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unsubscribe({U, S, R}, Topic) ->
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Mod = gen_mod:ram_db_mod(S, ?MODULE),
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Mod:unsubscribe({U, S, R}, Topic).
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-spec select_retained(jid:ljid(), binary(), qos(), non_neg_integer()) ->
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[{publish(), seconds()}].
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select_retained({_, S, _} = USR, TopicFilter, QoS, SubID) ->
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Mod = gen_mod:db_mod(S, ?MODULE),
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Limit = gen_mod:get_module_opt(S, ?MODULE, match_retained_limit),
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select_retained(Mod, USR, TopicFilter, QoS, SubID, Limit).
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%%%===================================================================
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%%% gen_server callbacks
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%%%===================================================================
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init([Host, Opts]) ->
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Mod = gen_mod:db_mod(Host, Opts, ?MODULE),
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RMod = gen_mod:ram_db_mod(Host, Opts, ?MODULE),
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try
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ok = Mod:init(Host, Opts),
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ok = RMod:init(),
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ok = init_cache(Mod, Host, Opts),
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{ok, #state{}}
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catch _:{badmatch, {error, Why}} ->
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{stop, Why}
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end.
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handle_call(_Request, _From, State) ->
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Reply = ok,
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{reply, Reply, State}.
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handle_cast(_Msg, State) ->
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{noreply, State}.
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handle_info(_Info, State) ->
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{noreply, State}.
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terminate(_Reason, _State) ->
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ok.
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code_change(_OldVsn, State, _Extra) ->
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{ok, State}.
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%%%===================================================================
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%%% Options
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%%%===================================================================
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mod_options(Host) ->
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[{match_retained_limit, 1000},
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{max_topic_depth, 8},
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{max_topic_aliases, 100},
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{session_expiry, 300},
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{max_queue, 5000},
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{access_subscribe, []},
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{access_publish, []},
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{db_type, ejabberd_config:default_db(Host, ?MODULE)},
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{ram_db_type, ejabberd_config:default_ram_db(Host, ?MODULE)},
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{queue_type, ejabberd_config:default_queue_type(Host)},
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{use_cache, ejabberd_config:use_cache(Host)},
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{cache_size, ejabberd_config:cache_size(Host)},
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{cache_missed, ejabberd_config:cache_missed(Host)},
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{cache_life_time, ejabberd_config:cache_life_time(Host)}].
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mod_opt_type(max_queue) ->
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fun(I) when is_integer(I), I > 0 -> I;
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(infinity) -> unlimited;
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(unlimited) -> unlimited
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end;
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mod_opt_type(session_expiry) ->
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fun(I) when is_integer(I), I>= 0 -> I end;
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mod_opt_type(match_retained_limit) ->
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fun(I) when is_integer(I), I>0 -> I;
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(unlimited) -> infinity;
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(infinity) -> infinity
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end;
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mod_opt_type(max_topic_depth) ->
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fun(I) when is_integer(I), I>0 -> I;
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(unlimited) -> infinity;
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(infinity) -> infinity
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end;
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mod_opt_type(max_topic_aliases) ->
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fun(I) when is_integer(I), I>=0, I<65536 -> I end;
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mod_opt_type(access_subscribe) ->
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fun validate_topic_access/1;
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mod_opt_type(access_publish) ->
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fun validate_topic_access/1;
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mod_opt_type(db_type) ->
|
||||
fun(T) -> ejabberd_config:v_db(?MODULE, T) end;
|
||||
mod_opt_type(ram_db_type) ->
|
||||
fun(T) -> ejabberd_config:v_db(?MODULE, T) end;
|
||||
mod_opt_type(queue_type) ->
|
||||
fun(ram) -> ram; (file) -> file end;
|
||||
mod_opt_type(O) when O == cache_life_time; O == cache_size ->
|
||||
fun(I) when is_integer(I), I > 0 -> I;
|
||||
(infinity) -> infinity
|
||||
end;
|
||||
mod_opt_type(O) when O == use_cache; O == cache_missed ->
|
||||
fun (B) when is_boolean(B) -> B end.
|
||||
|
||||
listen_opt_type(tls_verify) ->
|
||||
fun(B) when is_boolean(B) -> B end;
|
||||
listen_opt_type(max_payload_size) ->
|
||||
fun(I) when is_integer(I), I>0 -> I;
|
||||
(unlimited) -> infinity;
|
||||
(infinity) -> infinity
|
||||
end.
|
||||
|
||||
listen_options() ->
|
||||
[{max_fsm_queue, 5000},
|
||||
{max_payload_size, infinity},
|
||||
{tls, false},
|
||||
{tls_verify, false}].
|
||||
|
||||
%%%===================================================================
|
||||
%%% Internal functions
|
||||
%%%===================================================================
|
||||
route(Mod, LServer, Pkt, ExpiryTime) ->
|
||||
route(Mod, LServer, Pkt, ExpiryTime, Pkt#publish.topic, 0).
|
||||
|
||||
route(Mod, LServer, Pkt, ExpiryTime, Continuation, Num) ->
|
||||
case Mod:find_subscriber(LServer, Continuation) of
|
||||
{ok, {Pid, #sub_opts{no_local = true}, _}, Continuation1}
|
||||
when Pid == self() ->
|
||||
route(Mod, LServer, Pkt, ExpiryTime, Continuation1, Num);
|
||||
{ok, {Pid, SubOpts, ID}, Continuation1} ->
|
||||
?DEBUG("Route to ~p: ~s", [Pid, Pkt#publish.topic]),
|
||||
MinQoS = min(SubOpts#sub_opts.qos, Pkt#publish.qos),
|
||||
Retain = case SubOpts#sub_opts.retain_as_published of
|
||||
false -> false;
|
||||
true -> Pkt#publish.retain
|
||||
end,
|
||||
Props = set_sub_id(ID, Pkt#publish.properties),
|
||||
mod_mqtt_session:route(
|
||||
Pid, {Pkt#publish{qos = MinQoS,
|
||||
dup = false,
|
||||
retain = Retain,
|
||||
properties = Props},
|
||||
ExpiryTime}),
|
||||
route(Mod, LServer, Pkt, ExpiryTime, Continuation1, Num+1);
|
||||
{error, _} ->
|
||||
{ok, Num}
|
||||
end.
|
||||
|
||||
select_retained(Mod, {_, LServer, _} = USR, TopicFilter, QoS, SubID, Limit) ->
|
||||
Topics = match_topics(TopicFilter, LServer, Limit),
|
||||
lists:filtermap(
|
||||
fun({{Filter, _}, Topic}) ->
|
||||
case lookup_published(Mod, USR, Topic) of
|
||||
{ok, {Payload, QoS1, Props, ExpiryTime}} ->
|
||||
Props1 = set_sub_id(SubID, Props),
|
||||
{true, {#publish{topic = Topic,
|
||||
payload = Payload,
|
||||
retain = true,
|
||||
properties = Props1,
|
||||
qos = min(QoS, QoS1)},
|
||||
ExpiryTime}};
|
||||
error ->
|
||||
ets:delete(?MQTT_TOPIC_CACHE, {Filter, LServer}),
|
||||
false;
|
||||
_ ->
|
||||
false
|
||||
end
|
||||
end, Topics).
|
||||
|
||||
match_topics(Topic, LServer, Limit) ->
|
||||
Filter = topic_filter(Topic),
|
||||
case Limit of
|
||||
infinity ->
|
||||
ets:match_object(?MQTT_TOPIC_CACHE, {{Filter, LServer}, '_'});
|
||||
_ ->
|
||||
case ets:select(?MQTT_TOPIC_CACHE,
|
||||
[{{{Filter, LServer}, '_'}, [], ['$_']}], Limit) of
|
||||
{Topics, _} -> Topics;
|
||||
'$end_of_table' -> []
|
||||
end
|
||||
end.
|
||||
|
||||
retain({_, S, _} = USR, #publish{retain = true,
|
||||
topic = Topic, payload = Data,
|
||||
qos = QoS, properties = Props},
|
||||
ExpiryTime) ->
|
||||
Mod = gen_mod:db_mod(S, ?MODULE),
|
||||
TopicKey = topic_key(Topic),
|
||||
case Data of
|
||||
<<>> ->
|
||||
ets:delete(?MQTT_TOPIC_CACHE, {TopicKey, S}),
|
||||
case use_cache(Mod, S) of
|
||||
true ->
|
||||
ets_cache:delete(?MQTT_PAYLOAD_CACHE, {S, Topic},
|
||||
cache_nodes(Mod, S));
|
||||
false ->
|
||||
ok
|
||||
end,
|
||||
Mod:delete_published(USR, Topic);
|
||||
_ ->
|
||||
ets:insert(?MQTT_TOPIC_CACHE, {{TopicKey, S}, Topic}),
|
||||
case use_cache(Mod, S) of
|
||||
true ->
|
||||
case ets_cache:update(
|
||||
?MQTT_PAYLOAD_CACHE, {S, Topic},
|
||||
{ok, {Data, QoS, Props, ExpiryTime}},
|
||||
fun() ->
|
||||
Mod:publish(USR, Topic, Data,
|
||||
QoS, Props, ExpiryTime)
|
||||
end, cache_nodes(Mod, S)) of
|
||||
{ok, _} -> ok;
|
||||
{error, _} = Err -> Err
|
||||
end;
|
||||
false ->
|
||||
Mod:publish(USR, Topic, Data, QoS, Props, ExpiryTime)
|
||||
end
|
||||
end;
|
||||
retain(_, _, _) ->
|
||||
ok.
|
||||
|
||||
lookup_published(Mod, {_, LServer, _} = USR, Topic) ->
|
||||
case use_cache(Mod, LServer) of
|
||||
true ->
|
||||
ets_cache:lookup(
|
||||
?MQTT_PAYLOAD_CACHE, {LServer, Topic},
|
||||
fun() ->
|
||||
Mod:lookup_published(USR, Topic)
|
||||
end);
|
||||
false ->
|
||||
Mod:lookup_published(USR, Topic)
|
||||
end.
|
||||
|
||||
set_sub_id(0, Props) ->
|
||||
Props;
|
||||
set_sub_id(ID, Props) ->
|
||||
Props#{subscription_identifier => [ID]}.
|
||||
|
||||
%%%===================================================================
|
||||
%%% Matching functions
|
||||
%%%===================================================================
|
||||
topic_key(S) ->
|
||||
Parts = split_path(S),
|
||||
case join_key(Parts) of
|
||||
[<<>>|T] -> T;
|
||||
T -> T
|
||||
end.
|
||||
|
||||
topic_filter(S) ->
|
||||
Parts = split_path(S),
|
||||
case join_filter(Parts) of
|
||||
[<<>>|T] -> T;
|
||||
T -> T
|
||||
end.
|
||||
|
||||
join_key([X,Y|T]) ->
|
||||
[X, $/|join_key([Y|T])];
|
||||
join_key([X]) ->
|
||||
[X];
|
||||
join_key([]) ->
|
||||
[].
|
||||
|
||||
join_filter([X, <<$#>>]) ->
|
||||
[wildcard(X)|'_'];
|
||||
join_filter([X,Y|T]) ->
|
||||
[wildcard(X), $/|join_filter([Y|T])];
|
||||
join_filter([<<>>]) ->
|
||||
[];
|
||||
join_filter([<<$#>>]) ->
|
||||
'_';
|
||||
join_filter([X]) ->
|
||||
[wildcard(X)];
|
||||
join_filter([]) ->
|
||||
[].
|
||||
|
||||
wildcard(<<$+>>) -> '_';
|
||||
wildcard(Bin) -> Bin.
|
||||
|
||||
check_topic_depth(_Topic, infinity) ->
|
||||
allow;
|
||||
check_topic_depth(_, N) when N=<0 ->
|
||||
deny;
|
||||
check_topic_depth(<<$/, T/binary>>, N) ->
|
||||
check_topic_depth(T, N-1);
|
||||
check_topic_depth(<<_, T/binary>>, N) ->
|
||||
check_topic_depth(T, N);
|
||||
check_topic_depth(<<>>, _) ->
|
||||
allow.
|
||||
|
||||
split_path(Path) ->
|
||||
binary:split(Path, <<$/>>, [global]).
|
||||
|
||||
%%%===================================================================
|
||||
%%% Validators
|
||||
%%%===================================================================
|
||||
validate_topic_access(FilterRules) ->
|
||||
lists:map(
|
||||
fun({TopicFilter, Access}) ->
|
||||
Rule = acl:access_rules_validator(Access),
|
||||
try
|
||||
mqtt_codec:topic_filter(TopicFilter),
|
||||
{split_path(TopicFilter), Rule}
|
||||
catch _:_ ->
|
||||
?ERROR_MSG("Invalid topic filter: ~s", [TopicFilter]),
|
||||
erlang:error(badarg)
|
||||
end
|
||||
end, lists:reverse(lists:keysort(1, FilterRules))).
|
||||
|
||||
%%%===================================================================
|
||||
%%% ACL checks
|
||||
%%%===================================================================
|
||||
check_subscribe_access(Topic, {_, S, _} = USR) ->
|
||||
Rules = gen_mod:get_module_opt(S, mod_mqtt, access_subscribe),
|
||||
check_access(Topic, USR, Rules).
|
||||
|
||||
check_publish_access(<<$$, _/binary>>, _) ->
|
||||
deny;
|
||||
check_publish_access(Topic, {_, S, _} = USR) ->
|
||||
Rules = gen_mod:get_module_opt(S, mod_mqtt, access_publish),
|
||||
check_access(Topic, USR, Rules).
|
||||
|
||||
check_access(_, _, []) ->
|
||||
allow;
|
||||
check_access(Topic, {U, S, R} = USR, FilterRules) ->
|
||||
TopicParts = binary:split(Topic, <<$/>>, [global]),
|
||||
case lists:any(
|
||||
fun({FilterParts, Rule}) ->
|
||||
case match(TopicParts, FilterParts, U, S, R) of
|
||||
true ->
|
||||
allow == acl:match_rule(S, Rule, USR);
|
||||
false ->
|
||||
false
|
||||
end
|
||||
end, FilterRules) of
|
||||
true -> allow;
|
||||
false -> deny
|
||||
end.
|
||||
|
||||
match(_, [<<"#">>|_], _, _, _) ->
|
||||
true;
|
||||
match([], [<<>>, <<"#">>|_], _, _, _) ->
|
||||
true;
|
||||
match([_|T1], [<<"+">>|T2], U, S, R) ->
|
||||
match(T1, T2, U, S, R);
|
||||
match([H|T1], [<<"%u">>|T2], U, S, R) ->
|
||||
case jid:nodeprep(H) of
|
||||
U -> match(T1, T2, U, S, R);
|
||||
_ -> false
|
||||
end;
|
||||
match([H|T1], [<<"%d">>|T2], U, S, R) ->
|
||||
case jid:nameprep(H) of
|
||||
S -> match(T1, T2, U, S, R);
|
||||
_ -> false
|
||||
end;
|
||||
match([H|T1], [<<"%c">>|T2], U, S, R) ->
|
||||
case jid:resourceprep(H) of
|
||||
R -> match(T1, T2, U, S, R);
|
||||
_ -> false
|
||||
end;
|
||||
match([H|T1], [H|T2], U, S, R) ->
|
||||
match(T1, T2, U, S, R);
|
||||
match([], [], _, _, _) ->
|
||||
true;
|
||||
match(_, _, _, _, _) ->
|
||||
false.
|
||||
|
||||
%%%===================================================================
|
||||
%%% Cache stuff
|
||||
%%%===================================================================
|
||||
-spec init_cache(module(), binary(), gen_mod:opts()) -> ok | {error, db_failure}.
|
||||
init_cache(Mod, Host, Opts) ->
|
||||
init_payload_cache(Mod, Host, Opts),
|
||||
init_topic_cache(Mod, Host).
|
||||
|
||||
-spec init_topic_cache(module(), binary()) -> ok | {error, db_failure}.
|
||||
init_topic_cache(Mod, Host) ->
|
||||
catch ets:new(?MQTT_TOPIC_CACHE,
|
||||
[named_table, ordered_set, public,
|
||||
{heir, erlang:group_leader(), none}]),
|
||||
?INFO_MSG("Building MQTT cache for ~s, this may take a while", [Host]),
|
||||
case Mod:list_topics(Host) of
|
||||
{ok, Topics} ->
|
||||
lists:foreach(
|
||||
fun(Topic) ->
|
||||
ets:insert(?MQTT_TOPIC_CACHE,
|
||||
{{topic_key(Topic), Host}, Topic})
|
||||
end, Topics);
|
||||
{error, _} = Err ->
|
||||
Err
|
||||
end.
|
||||
|
||||
-spec init_payload_cache(module(), binary(), gen_mod:opts()) -> ok.
|
||||
init_payload_cache(Mod, Host, Opts) ->
|
||||
case use_cache(Mod, Host) of
|
||||
true ->
|
||||
CacheOpts = cache_opts(Opts),
|
||||
ets_cache:new(?MQTT_PAYLOAD_CACHE, CacheOpts);
|
||||
false ->
|
||||
ets_cache:delete(?MQTT_PAYLOAD_CACHE)
|
||||
end.
|
||||
|
||||
-spec cache_opts(gen_mod:opts()) -> [proplists:property()].
|
||||
cache_opts(Opts) ->
|
||||
MaxSize = gen_mod:get_opt(cache_size, Opts),
|
||||
CacheMissed = gen_mod:get_opt(cache_missed, Opts),
|
||||
LifeTime = case gen_mod:get_opt(cache_life_time, Opts) of
|
||||
infinity -> infinity;
|
||||
I -> timer:seconds(I)
|
||||
end,
|
||||
[{max_size, MaxSize}, {cache_missed, CacheMissed}, {life_time, LifeTime}].
|
||||
|
||||
-spec use_cache(module(), binary()) -> boolean().
|
||||
use_cache(Mod, Host) ->
|
||||
case erlang:function_exported(Mod, use_cache, 1) of
|
||||
true -> Mod:use_cache(Host);
|
||||
false -> gen_mod:get_module_opt(Host, ?MODULE, use_cache)
|
||||
end.
|
||||
|
||||
-spec cache_nodes(module(), binary()) -> [node()].
|
||||
cache_nodes(Mod, Host) ->
|
||||
case erlang:function_exported(Mod, cache_nodes, 1) of
|
||||
true -> Mod:cache_nodes(Host);
|
||||
false -> ejabberd_cluster:get_nodes()
|
||||
end.
|
||||
132
src/mod_mqtt_mnesia.erl
Normal file
132
src/mod_mqtt_mnesia.erl
Normal file
@ -0,0 +1,132 @@
|
||||
%%%-------------------------------------------------------------------
|
||||
%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
|
||||
%%% @copyright (C) 2002-2019 ProcessOne, SARL. All Rights Reserved.
|
||||
%%%
|
||||
%%% Licensed under the Apache License, Version 2.0 (the "License");
|
||||
%%% you may not use this file except in compliance with the License.
|
||||
%%% You may obtain a copy of the License at
|
||||
%%%
|
||||
%%% http://www.apache.org/licenses/LICENSE-2.0
|
||||
%%%
|
||||
%%% Unless required by applicable law or agreed to in writing, software
|
||||
%%% distributed under the License is distributed on an "AS IS" BASIS,
|
||||
%%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
%%% See the License for the specific language governing permissions and
|
||||
%%% limitations under the License.
|
||||
%%%
|
||||
%%%-------------------------------------------------------------------
|
||||
-module(mod_mqtt_mnesia).
|
||||
-behaviour(mod_mqtt).
|
||||
|
||||
%% API
|
||||
-export([init/2, publish/6, delete_published/2, lookup_published/2]).
|
||||
-export([list_topics/1, use_cache/1]).
|
||||
%% Unsupported backend API
|
||||
-export([init/0]).
|
||||
-export([subscribe/4, unsubscribe/2, find_subscriber/2]).
|
||||
-export([open_session/1, close_session/1, lookup_session/1]).
|
||||
|
||||
-include("logger.hrl").
|
||||
|
||||
-record(mqtt_pub, {topic_server :: {binary(), binary()},
|
||||
user :: binary(),
|
||||
resource :: binary(),
|
||||
qos :: 0..2,
|
||||
payload :: binary(),
|
||||
expiry :: non_neg_integer(),
|
||||
payload_format = binary :: binary | utf8,
|
||||
response_topic = <<>> :: binary(),
|
||||
correlation_data = <<>> :: binary(),
|
||||
content_type = <<>> :: binary(),
|
||||
user_properties = [] :: [{binary(), binary()}]}).
|
||||
|
||||
%%%===================================================================
|
||||
%%% API
|
||||
%%%===================================================================
|
||||
init(_Host, _Opts) ->
|
||||
case ejabberd_mnesia:create(
|
||||
?MODULE, mqtt_pub,
|
||||
[{disc_only_copies, [node()]},
|
||||
{attributes, record_info(fields, mqtt_pub)}]) of
|
||||
{atomic, _} ->
|
||||
ok;
|
||||
Err ->
|
||||
{error, Err}
|
||||
end.
|
||||
|
||||
use_cache(Host) ->
|
||||
case mnesia:table_info(mqtt_pub, storage_type) of
|
||||
disc_only_copies ->
|
||||
gen_mod:get_module_opt(Host, mod_mqtt, use_cache);
|
||||
_ ->
|
||||
false
|
||||
end.
|
||||
|
||||
publish({U, LServer, R}, Topic, Payload, QoS, Props, ExpiryTime) ->
|
||||
PayloadFormat = maps:get(payload_format_indicator, Props, binary),
|
||||
ResponseTopic = maps:get(response_topic, Props, <<"">>),
|
||||
CorrelationData = maps:get(correlation_data, Props, <<"">>),
|
||||
ContentType = maps:get(content_type, Props, <<"">>),
|
||||
UserProps = maps:get(user_property, Props, []),
|
||||
mnesia:dirty_write(#mqtt_pub{topic_server = {Topic, LServer},
|
||||
user = U,
|
||||
resource = R,
|
||||
qos = QoS,
|
||||
payload = Payload,
|
||||
expiry = ExpiryTime,
|
||||
payload_format = PayloadFormat,
|
||||
response_topic = ResponseTopic,
|
||||
correlation_data = CorrelationData,
|
||||
content_type = ContentType,
|
||||
user_properties = UserProps}).
|
||||
|
||||
delete_published({_, S, _}, Topic) ->
|
||||
mnesia:dirty_delete(mqtt_pub, {Topic, S}).
|
||||
|
||||
lookup_published({_, S, _}, Topic) ->
|
||||
case mnesia:dirty_read(mqtt_pub, {Topic, S}) of
|
||||
[#mqtt_pub{qos = QoS,
|
||||
payload = Payload,
|
||||
expiry = ExpiryTime,
|
||||
payload_format = PayloadFormat,
|
||||
response_topic = ResponseTopic,
|
||||
correlation_data = CorrelationData,
|
||||
content_type = ContentType,
|
||||
user_properties = UserProps}] ->
|
||||
Props = #{payload_format => PayloadFormat,
|
||||
response_topic => ResponseTopic,
|
||||
correlation_data => CorrelationData,
|
||||
content_type => ContentType,
|
||||
user_property => UserProps},
|
||||
{ok, {Payload, QoS, Props, ExpiryTime}};
|
||||
[] ->
|
||||
{error, notfound}
|
||||
end.
|
||||
|
||||
list_topics(S) ->
|
||||
{ok, [Topic || {Topic, S1} <- mnesia:dirty_all_keys(mqtt_pub), S1 == S]}.
|
||||
|
||||
init() ->
|
||||
erlang:nif_error(unsupported_db).
|
||||
|
||||
open_session(_) ->
|
||||
erlang:nif_error(unsupported_db).
|
||||
|
||||
close_session(_) ->
|
||||
erlang:nif_error(unsupported_db).
|
||||
|
||||
lookup_session(_) ->
|
||||
erlang:nif_error(unsupported_db).
|
||||
|
||||
subscribe(_, _, _, _) ->
|
||||
erlang:nif_error(unsupported_db).
|
||||
|
||||
unsubscribe(_, _) ->
|
||||
erlang:nif_error(unsupported_db).
|
||||
|
||||
find_subscriber(_, _) ->
|
||||
erlang:nif_error(unsupported_db).
|
||||
|
||||
%%%===================================================================
|
||||
%%% Internal functions
|
||||
%%%===================================================================
|
||||
1318
src/mod_mqtt_session.erl
Normal file
1318
src/mod_mqtt_session.erl
Normal file
File diff suppressed because it is too large
Load Diff
151
src/mod_mqtt_sql.erl
Normal file
151
src/mod_mqtt_sql.erl
Normal file
@ -0,0 +1,151 @@
|
||||
%%%-------------------------------------------------------------------
|
||||
%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
|
||||
%%% @copyright (C) 2002-2019 ProcessOne, SARL. All Rights Reserved.
|
||||
%%%
|
||||
%%% Licensed under the Apache License, Version 2.0 (the "License");
|
||||
%%% you may not use this file except in compliance with the License.
|
||||
%%% You may obtain a copy of the License at
|
||||
%%%
|
||||
%%% http://www.apache.org/licenses/LICENSE-2.0
|
||||
%%%
|
||||
%%% Unless required by applicable law or agreed to in writing, software
|
||||
%%% distributed under the License is distributed on an "AS IS" BASIS,
|
||||
%%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
%%% See the License for the specific language governing permissions and
|
||||
%%% limitations under the License.
|
||||
%%%
|
||||
%%%-------------------------------------------------------------------
|
||||
-module(mod_mqtt_sql).
|
||||
-behaviour(mod_mqtt).
|
||||
-compile([{parse_transform, ejabberd_sql_pt}]).
|
||||
|
||||
%% API
|
||||
-export([init/2, publish/6, delete_published/2, lookup_published/2]).
|
||||
-export([list_topics/1]).
|
||||
%% Unsupported backend API
|
||||
-export([init/0]).
|
||||
-export([subscribe/4, unsubscribe/2, find_subscriber/2]).
|
||||
-export([open_session/1, close_session/1, lookup_session/1]).
|
||||
|
||||
-include("logger.hrl").
|
||||
-include("ejabberd_sql_pt.hrl").
|
||||
|
||||
%%%===================================================================
|
||||
%%% API
|
||||
%%%===================================================================
|
||||
init() ->
|
||||
?ERROR_MSG("Backend 'sql' is only supported for db_type", []),
|
||||
{error, db_failure}.
|
||||
|
||||
init(_Host, _Opts) ->
|
||||
ok.
|
||||
|
||||
publish({U, LServer, R}, Topic, Payload, QoS, Props, ExpiryTime) ->
|
||||
PayloadFormat = encode_pfi(maps:get(payload_format_indicator, Props, binary)),
|
||||
ResponseTopic = maps:get(response_topic, Props, <<"">>),
|
||||
CorrelationData = maps:get(correlation_data, Props, <<"">>),
|
||||
ContentType = maps:get(content_type, Props, <<"">>),
|
||||
UserProps = encode_props(maps:get(user_property, Props, [])),
|
||||
case ?SQL_UPSERT(LServer, "mqtt_pub",
|
||||
["!topic=%(Topic)s",
|
||||
"!server_host=%(LServer)s",
|
||||
"username=%(U)s",
|
||||
"resource=%(R)s",
|
||||
"payload=%(Payload)s",
|
||||
"qos=%(QoS)d",
|
||||
"payload_format=%(PayloadFormat)d",
|
||||
"response_topic=%(ResponseTopic)s",
|
||||
"correlation_data=%(CorrelationData)s",
|
||||
"content_type=%(ContentType)s",
|
||||
"user_properties=%(UserProps)s",
|
||||
"expiry=%(ExpiryTime)d"]) of
|
||||
ok -> ok;
|
||||
_Err -> {error, db_failure}
|
||||
end.
|
||||
|
||||
delete_published({_, LServer, _}, Topic) ->
|
||||
case ejabberd_sql:sql_query(
|
||||
LServer,
|
||||
?SQL("delete from mqtt_pub where "
|
||||
"topic=%(Topic)s and %(LServer)H")) of
|
||||
{updated, _} -> ok;
|
||||
_Err -> {error, db_failure}
|
||||
end.
|
||||
|
||||
lookup_published({_, LServer, _}, Topic) ->
|
||||
case ejabberd_sql:sql_query(
|
||||
LServer,
|
||||
?SQL("select @(payload)s, @(qos)d, @(payload_format)d, "
|
||||
"@(content_type)s, @(response_topic)s, "
|
||||
"@(correlation_data)s, @(user_properties)s, @(expiry)d "
|
||||
"from mqtt_pub where topic=%(Topic)s and %(LServer)H")) of
|
||||
{selected, [{Payload, QoS, PayloadFormat, ContentType,
|
||||
ResponseTopic, CorrelationData, EncProps, Expiry}]} ->
|
||||
try decode_props(EncProps) of
|
||||
UserProps ->
|
||||
try decode_pfi(PayloadFormat) of
|
||||
PFI ->
|
||||
Props = #{payload_format_indicator => PFI,
|
||||
content_type => ContentType,
|
||||
response_topic => ResponseTopic,
|
||||
correlation_data => CorrelationData,
|
||||
user_property => UserProps},
|
||||
{ok, {Payload, QoS, Props, Expiry}}
|
||||
catch _:badarg ->
|
||||
?ERROR_MSG("Malformed value of 'payload_format' column "
|
||||
"for topic '~s'", [Topic]),
|
||||
{error, db_failure}
|
||||
end
|
||||
catch _:badarg ->
|
||||
?ERROR_MSG("Malformed value of 'user_properties' column "
|
||||
"for topic '~s'", [Topic]),
|
||||
{error, db_failure}
|
||||
end;
|
||||
{selected, []} ->
|
||||
{error, notfound};
|
||||
_ ->
|
||||
{error, db_failure}
|
||||
end.
|
||||
|
||||
list_topics(LServer) ->
|
||||
case ejabberd_sql:sql_query(
|
||||
LServer,
|
||||
?SQL("select @(topic)s from mqtt_pub where %(LServer)H")) of
|
||||
{selected, Res} ->
|
||||
{ok, [Topic || {Topic} <- Res]};
|
||||
_ ->
|
||||
{error, db_failure}
|
||||
end.
|
||||
|
||||
open_session(_) ->
|
||||
erlang:nif_error(unsupported_db).
|
||||
|
||||
close_session(_) ->
|
||||
erlang:nif_error(unsupported_db).
|
||||
|
||||
lookup_session(_) ->
|
||||
erlang:nif_error(unsupported_db).
|
||||
|
||||
subscribe(_, _, _, _) ->
|
||||
erlang:nif_error(unsupported_db).
|
||||
|
||||
unsubscribe(_, _) ->
|
||||
erlang:nif_error(unsupported_db).
|
||||
|
||||
find_subscriber(_, _) ->
|
||||
erlang:nif_error(unsupported_db).
|
||||
|
||||
%%%===================================================================
|
||||
%%% Internal functions
|
||||
%%%===================================================================
|
||||
encode_pfi(binary) -> 0;
|
||||
encode_pfi(utf8) -> 1.
|
||||
|
||||
decode_pfi(0) -> binary;
|
||||
decode_pfi(1) -> utf8.
|
||||
|
||||
encode_props([]) -> <<"">>;
|
||||
encode_props(L) -> term_to_binary(L).
|
||||
|
||||
decode_props(<<"">>) -> [];
|
||||
decode_props(Bin) -> binary_to_term(Bin).
|
||||
1402
src/mqtt_codec.erl
Normal file
1402
src/mqtt_codec.erl
Normal file
File diff suppressed because it is too large
Load Diff
Loading…
Reference in New Issue
Block a user