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Support XEP-0352: Client State Indication
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@ -66,6 +66,7 @@
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\newcommand{\module}[1]{\texttt{#1}}
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\newcommand{\module}[1]{\texttt{#1}}
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\newcommand{\modadhoc}{\module{mod\_adhoc}}
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\newcommand{\modadhoc}{\module{mod\_adhoc}}
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\newcommand{\modannounce}{\module{mod\_announce}}
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\newcommand{\modannounce}{\module{mod\_announce}}
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\newcommand{\modclientstate}{\module{mod\_client\_state}}
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\newcommand{\modblocking}{\module{mod\_blocking}}
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\newcommand{\modblocking}{\module{mod\_blocking}}
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\newcommand{\modcaps}{\module{mod\_caps}}
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\newcommand{\modcaps}{\module{mod\_caps}}
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\newcommand{\modcarboncopy}{\module{mod\_carboncopy}}
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\newcommand{\modcarboncopy}{\module{mod\_carboncopy}}
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@ -2781,6 +2782,7 @@ The following table lists all modules included in \ejabberd{}.
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\hline \modblocking{} & Simple Communications Blocking (\xepref{0191}) & \modprivacy{} \\
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\hline \modblocking{} & Simple Communications Blocking (\xepref{0191}) & \modprivacy{} \\
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\hline \modcaps{} & Entity Capabilities (\xepref{0115}) & \\
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\hline \modcaps{} & Entity Capabilities (\xepref{0115}) & \\
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\hline \modcarboncopy{} & Message Carbons (\xepref{0280}) & \\
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\hline \modcarboncopy{} & Message Carbons (\xepref{0280}) & \\
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\hline \ahrefloc{modclientstate}{\modclientstate{}} & Filter stanzas for inactive clients & \\
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\hline \modconfigure{} & Server configuration using Ad-Hoc & \modadhoc{} \\
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\hline \modconfigure{} & Server configuration using Ad-Hoc & \modadhoc{} \\
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\hline \ahrefloc{moddisco}{\moddisco{}} & Service Discovery (\xepref{0030}) & \\
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\hline \ahrefloc{moddisco}{\moddisco{}} & Service Discovery (\xepref{0030}) & \\
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\hline \ahrefloc{modecho}{\modecho{}} & Echoes XMPP stanzas & \\
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\hline \ahrefloc{modecho}{\modecho{}} & Echoes XMPP stanzas & \\
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@ -3001,6 +3003,38 @@ Note that \modannounce{} can be resource intensive on large
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deployments as it can broadcast lot of messages. This module should be
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deployments as it can broadcast lot of messages. This module should be
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disabled for instances of \ejabberd{} with hundreds of thousands users.
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disabled for instances of \ejabberd{} with hundreds of thousands users.
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\makesubsection{modclientstate}{\modclientstate{}}
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\ind{modules!\modclientstate{}}\ind{Client State Indication}
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\ind{protocols!XEP-0352: Client State Indication}
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This module allows for queueing or dropping certain types of stanzas
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when a client indicates that the user is not actively using the client
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at the moment (see \xepref{0352}). This can save bandwidth and
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resources.
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Options:
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\begin{description}
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\titem{drop\_chat\_states: true|false} \ind{options!drop\_chat\_states}
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Drop most "standalone" Chat State Notifications (as defined in
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\xepref{0085}) while a client indicates inactivity. The default value
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is \term{false}.
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\titem{queue\_presence: true|false} \ind{options!queue\_presence}
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While a client is inactive, queue presence stanzas that indicate
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(un)availability. The latest queued stanza of each contact is
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delivered as soon as the client becomes active again. The default
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value is \term{false}.
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\end{description}
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Example:
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\begin{verbatim}
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modules:
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...
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mod_client_state:
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drop_chat_states: true
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queue_presence: true
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...
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\end{verbatim}
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\makesubsection{moddisco}{\moddisco{}}
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\makesubsection{moddisco}{\moddisco{}}
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\ind{modules!\moddisco{}}
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\ind{modules!\moddisco{}}
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\ind{protocols!XEP-0030: Service Discovery}
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\ind{protocols!XEP-0030: Service Discovery}
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@ -558,6 +558,9 @@ modules:
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mod_blocking: {} # requires mod_privacy
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mod_blocking: {} # requires mod_privacy
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mod_caps: {}
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mod_caps: {}
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mod_carboncopy: {}
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mod_carboncopy: {}
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mod_client_state:
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drop_chat_states: true
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queue_presence: false
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mod_configure: {} # requires mod_adhoc
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mod_configure: {} # requires mod_adhoc
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mod_disco: {}
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mod_disco: {}
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## mod_echo: {}
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## mod_echo: {}
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@ -147,5 +147,6 @@
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-define(NS_CARBONS_2, <<"urn:xmpp:carbons:2">>).
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-define(NS_CARBONS_2, <<"urn:xmpp:carbons:2">>).
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-define(NS_CARBONS_1, <<"urn:xmpp:carbons:1">>).
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-define(NS_CARBONS_1, <<"urn:xmpp:carbons:1">>).
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-define(NS_FORWARD, <<"urn:xmpp:forward:0">>).
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-define(NS_FORWARD, <<"urn:xmpp:forward:0">>).
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-define(NS_CLIENT_STATE, <<"urn:xmpp:csi:0">>).
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-define(NS_STREAM_MGMT_2, <<"urn:xmpp:sm:2">>).
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-define(NS_STREAM_MGMT_2, <<"urn:xmpp:sm:2">>).
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-define(NS_STREAM_MGMT_3, <<"urn:xmpp:sm:3">>).
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-define(NS_STREAM_MGMT_3, <<"urn:xmpp:sm:3">>).
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@ -108,6 +108,8 @@
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auth_module = unknown,
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auth_module = unknown,
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ip,
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ip,
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aux_fields = [],
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aux_fields = [],
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csi_state = active,
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csi_queue = [],
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mgmt_state,
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mgmt_state,
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mgmt_xmlns,
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mgmt_xmlns,
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mgmt_queue,
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mgmt_queue,
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@ -475,6 +477,10 @@ wait_for_stream({xmlstreamstart, _Name, Attrs}, StateData) ->
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false ->
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false ->
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[]
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[]
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end,
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end,
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ClientStateFeature =
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[#xmlel{name = <<"csi">>,
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attrs = [{<<"xmlns">>, ?NS_CLIENT_STATE}],
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children = []}],
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StreamFeatures = [#xmlel{name = <<"bind">>,
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StreamFeatures = [#xmlel{name = <<"bind">>,
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attrs = [{<<"xmlns">>, ?NS_BIND}],
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attrs = [{<<"xmlns">>, ?NS_BIND}],
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children = []},
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children = []},
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@ -484,6 +490,7 @@ wait_for_stream({xmlstreamstart, _Name, Attrs}, StateData) ->
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++
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++
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RosterVersioningFeature ++
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RosterVersioningFeature ++
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StreamManagementFeature ++
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StreamManagementFeature ++
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ClientStateFeature ++
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ejabberd_hooks:run_fold(c2s_stream_features,
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ejabberd_hooks:run_fold(c2s_stream_features,
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Server, [], [Server]),
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Server, [], [Server]),
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send_element(StateData,
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send_element(StateData,
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@ -1165,6 +1172,17 @@ wait_for_session(closed, StateData) ->
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session_established({xmlstreamelement, #xmlel{name = Name} = El}, StateData)
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session_established({xmlstreamelement, #xmlel{name = Name} = El}, StateData)
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when ?IS_STREAM_MGMT_TAG(Name) ->
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when ?IS_STREAM_MGMT_TAG(Name) ->
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fsm_next_state(session_established, dispatch_stream_mgmt(El, StateData));
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fsm_next_state(session_established, dispatch_stream_mgmt(El, StateData));
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session_established({xmlstreamelement,
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#xmlel{name = <<"active">>,
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attrs = [{<<"xmlns">>, ?NS_CLIENT_STATE}]}},
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StateData) ->
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NewStateData = csi_queue_flush(StateData),
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fsm_next_state(session_established, NewStateData#state{csi_state = active});
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session_established({xmlstreamelement,
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#xmlel{name = <<"inactive">>,
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attrs = [{<<"xmlns">>, ?NS_CLIENT_STATE}]}},
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StateData) ->
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fsm_next_state(session_established, StateData#state{csi_state = inactive});
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session_established({xmlstreamelement, El},
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session_established({xmlstreamelement, El},
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StateData) ->
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StateData) ->
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FromJID = StateData#state.jid,
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FromJID = StateData#state.jid,
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@ -1855,6 +1873,8 @@ send_element(StateData, El) when StateData#state.xml_socket ->
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send_element(StateData, El) ->
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send_element(StateData, El) ->
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send_text(StateData, xml:element_to_binary(El)).
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send_text(StateData, xml:element_to_binary(El)).
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send_stanza(StateData, Stanza) when StateData#state.csi_state == inactive ->
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csi_filter_stanza(StateData, Stanza);
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send_stanza(StateData, Stanza) when StateData#state.mgmt_state == pending ->
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send_stanza(StateData, Stanza) when StateData#state.mgmt_state == pending ->
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mgmt_queue_add(StateData, Stanza);
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mgmt_queue_add(StateData, Stanza);
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send_stanza(StateData, Stanza) when StateData#state.mgmt_state == active ->
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send_stanza(StateData, Stanza) when StateData#state.mgmt_state == active ->
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@ -1869,18 +1889,14 @@ send_stanza(StateData, Stanza) ->
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send_element(StateData, Stanza),
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send_element(StateData, Stanza),
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StateData.
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StateData.
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send_packet(StateData, Packet) when StateData#state.mgmt_state == active;
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send_packet(StateData, Packet) ->
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StateData#state.mgmt_state == pending ->
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case is_stanza(Packet) of
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case is_stanza(Packet) of
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true ->
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true ->
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send_stanza(StateData, Packet);
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send_stanza(StateData, Packet);
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false ->
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false ->
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send_element(StateData, Packet),
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send_element(StateData, Packet),
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StateData
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StateData
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end;
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end.
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send_packet(StateData, Stanza) ->
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send_element(StateData, Stanza),
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StateData.
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send_header(StateData, Server, Version, Lang)
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send_header(StateData, Server, Version, Lang)
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when StateData#state.xml_socket ->
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when StateData#state.xml_socket ->
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@ -2762,9 +2778,11 @@ handle_resume(StateData, Attrs) ->
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#xmlel{name = <<"r">>,
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#xmlel{name = <<"r">>,
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attrs = [{<<"xmlns">>, AttrXmlns}],
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attrs = [{<<"xmlns">>, AttrXmlns}],
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children = []}),
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children = []}),
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FlushedState = csi_queue_flush(NewState),
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NewStateData = FlushedState#state{csi_state = active},
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?INFO_MSG("Resumed session for ~s",
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?INFO_MSG("Resumed session for ~s",
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[jlib:jid_to_string(NewState#state.jid)]),
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[jlib:jid_to_string(NewStateData#state.jid)]),
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{ok, NewState};
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{ok, NewStateData};
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{error, El, Msg} ->
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{error, El, Msg} ->
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send_element(StateData, El),
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send_element(StateData, El),
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?INFO_MSG("Cannot resume session for ~s@~s: ~s",
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?INFO_MSG("Cannot resume session for ~s@~s: ~s",
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@ -2953,6 +2971,8 @@ inherit_session_state(#state{user = U, server = S} = StateData, ResumeID) ->
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pres_invis = OldStateData#state.pres_invis,
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pres_invis = OldStateData#state.pres_invis,
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privacy_list = OldStateData#state.privacy_list,
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privacy_list = OldStateData#state.privacy_list,
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aux_fields = OldStateData#state.aux_fields,
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aux_fields = OldStateData#state.aux_fields,
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csi_state = OldStateData#state.csi_state,
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csi_queue = OldStateData#state.csi_queue,
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mgmt_xmlns = OldStateData#state.mgmt_xmlns,
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mgmt_xmlns = OldStateData#state.mgmt_xmlns,
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mgmt_queue = OldStateData#state.mgmt_queue,
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mgmt_queue = OldStateData#state.mgmt_queue,
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mgmt_timeout = OldStateData#state.mgmt_timeout,
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mgmt_timeout = OldStateData#state.mgmt_timeout,
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@ -2976,6 +2996,71 @@ make_resume_id(StateData) ->
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{Time, _} = StateData#state.sid,
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{Time, _} = StateData#state.sid,
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jlib:term_to_base64({StateData#state.resource, Time}).
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jlib:term_to_base64({StateData#state.resource, Time}).
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%%%----------------------------------------------------------------------
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%%% XEP-0352
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%%%----------------------------------------------------------------------
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csi_filter_stanza(#state{csi_state = CsiState, jid = JID} = StateData,
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Stanza) ->
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Action = ejabberd_hooks:run_fold(csi_filter_stanza,
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StateData#state.server,
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send, [Stanza]),
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?DEBUG("Going to ~p stanza for inactive client ~p",
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[Action, jlib:jid_to_string(JID)]),
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case Action of
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queue -> csi_queue_add(StateData, Stanza);
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drop -> StateData;
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send ->
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From = xml:get_tag_attr_s(<<"from">>, Stanza),
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StateData1 = csi_queue_send(StateData, From),
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StateData2 = send_stanza(StateData1#state{csi_state = active},
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Stanza),
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StateData2#state{csi_state = CsiState}
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end.
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csi_queue_add(#state{csi_queue = Queue, server = Host} = StateData,
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#xmlel{children = Els} = Stanza) ->
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From = xml:get_tag_attr_s(<<"from">>, Stanza),
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Time = calendar:now_to_universal_time(os:timestamp()),
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DelayTag = [jlib:timestamp_to_xml(Time, utc,
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jlib:make_jid(<<"">>, Host, <<"">>),
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<<"Client Inactive">>)],
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NewStanza = Stanza#xmlel{children = Els ++ DelayTag},
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case length(StateData#state.csi_queue) >= csi_max_queue(StateData) of
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true -> csi_queue_add(csi_queue_flush(StateData), NewStanza);
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false ->
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NewQueue = lists:keystore(From, 1, Queue, {From, NewStanza}),
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StateData#state{csi_queue = NewQueue}
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end.
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csi_queue_send(#state{csi_queue = Queue, csi_state = CsiState} = StateData,
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From) ->
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case lists:keytake(From, 1, Queue) of
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{value, {From, Stanza}, NewQueue} ->
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NewStateData = send_stanza(StateData#state{csi_state = active},
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Stanza),
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NewStateData#state{csi_queue = NewQueue, csi_state = CsiState};
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false -> StateData
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end.
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csi_queue_flush(#state{csi_queue = Queue, csi_state = CsiState, jid = JID} =
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StateData) ->
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?DEBUG("Flushing CSI queue for ~s", [jlib:jid_to_string(JID)]),
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NewStateData =
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lists:foldl(fun({_From, Stanza}, AccState) ->
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send_stanza(AccState, Stanza)
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end, StateData#state{csi_state = active}, Queue),
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NewStateData#state{csi_queue = [], csi_state = CsiState}.
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%% Make sure we won't push too many messages to the XEP-0198 queue when the
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%% client becomes 'active' again. Otherwise, the client might not manage to
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%% acknowledge the message flood in time. Also, don't let the queue grow to
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%% more than 100 stanzas.
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csi_max_queue(#state{mgmt_max_queue = infinity}) -> 100;
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csi_max_queue(#state{mgmt_max_queue = Max}) when Max > 200 -> 100;
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csi_max_queue(#state{mgmt_max_queue = Max}) when Max < 2 -> 1;
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csi_max_queue(#state{mgmt_max_queue = Max}) -> Max div 2.
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%%%----------------------------------------------------------------------
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%%%----------------------------------------------------------------------
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%%% JID Set memory footprint reduction code
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%%% JID Set memory footprint reduction code
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%%%----------------------------------------------------------------------
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%%%----------------------------------------------------------------------
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91
src/mod_client_state.erl
Normal file
91
src/mod_client_state.erl
Normal file
@ -0,0 +1,91 @@
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%%%----------------------------------------------------------------------
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%%% File : mod_client_state.erl
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%%% Author : Holger Weiss
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%%% Purpose : Filter stanzas sent to inactive clients (XEP-0352)
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%%% Created : 11 Sep 2014 by Holger Weiss
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%%%
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%%%
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%%% ejabberd, Copyright (C) 2014 ProcessOne
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%%%
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%%% This program is free software; you can redistribute it and/or
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%%% modify it under the terms of the GNU General Public License as
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%%% published by the Free Software Foundation; either version 2 of the
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%%% License, or (at your option) any later version.
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%%%
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%%% This program is distributed in the hope that it will be useful,
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%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
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%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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%%% General Public License for more details.
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%%%
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%%% You should have received a copy of the GNU General Public License along
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%%% with this program; if not, write to the Free Software Foundation, Inc.,
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%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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%%%
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%%%----------------------------------------------------------------------
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-module(mod_client_state).
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-author('holger@zedat.fu-berlin.de').
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-behavior(gen_mod).
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-export([start/2, stop/1, filter_presence/2, filter_chat_states/2]).
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-include("ejabberd.hrl").
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-include("logger.hrl").
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-include("jlib.hrl").
|
||||||
|
|
||||||
|
start(Host, Opts) ->
|
||||||
|
QueuePresence = gen_mod:get_opt(queue_presence, Opts,
|
||||||
|
fun(true) -> true end, false),
|
||||||
|
DropChatStates = gen_mod:get_opt(drop_chat_states, Opts,
|
||||||
|
fun(true) -> true end, false),
|
||||||
|
if QueuePresence ->
|
||||||
|
ejabberd_hooks:add(csi_filter_stanza, Host, ?MODULE,
|
||||||
|
filter_presence, 50);
|
||||||
|
true -> ok
|
||||||
|
end,
|
||||||
|
if DropChatStates ->
|
||||||
|
ejabberd_hooks:add(csi_filter_stanza, Host, ?MODULE,
|
||||||
|
filter_chat_states, 50);
|
||||||
|
true -> ok
|
||||||
|
end,
|
||||||
|
ok.
|
||||||
|
|
||||||
|
stop(Host) ->
|
||||||
|
ejabberd_hooks:delete(csi_filter_stanza, Host, ?MODULE,
|
||||||
|
filter_presence, 50),
|
||||||
|
ejabberd_hooks:delete(csi_filter_stanza, Host, ?MODULE,
|
||||||
|
filter_chat_states, 50),
|
||||||
|
ok.
|
||||||
|
|
||||||
|
filter_presence(_Action, #xmlel{name = <<"presence">>, attrs = Attrs}) ->
|
||||||
|
case xml:get_attr(<<"type">>, Attrs) of
|
||||||
|
{value, Type} when Type /= <<"unavailable">> ->
|
||||||
|
?DEBUG("Got important presence stanza", []),
|
||||||
|
{stop, send};
|
||||||
|
_ ->
|
||||||
|
?DEBUG("Got availability presence stanza", []),
|
||||||
|
{stop, queue}
|
||||||
|
end;
|
||||||
|
filter_presence(Action, _Stanza) -> Action.
|
||||||
|
|
||||||
|
filter_chat_states(_Action, #xmlel{name = <<"message">>} = Stanza) ->
|
||||||
|
%% All XEP-0085 chat states except for <gone/>:
|
||||||
|
ChatStates = [<<"active">>, <<"inactive">>, <<"composing">>, <<"paused">>],
|
||||||
|
Stripped =
|
||||||
|
lists:foldl(fun(ChatState, AccStanza) ->
|
||||||
|
xml:remove_subtags(AccStanza, ChatState,
|
||||||
|
{<<"xmlns">>, ?NS_CHATSTATES})
|
||||||
|
end, Stanza, ChatStates),
|
||||||
|
case Stripped of
|
||||||
|
#xmlel{children = [#xmlel{name = <<"thread">>}]} ->
|
||||||
|
?DEBUG("Got standalone chat state notification", []),
|
||||||
|
{stop, drop};
|
||||||
|
#xmlel{children = []} ->
|
||||||
|
?DEBUG("Got standalone chat state notification", []),
|
||||||
|
{stop, drop};
|
||||||
|
_ ->
|
||||||
|
?DEBUG("Got message with chat state notification", []),
|
||||||
|
{stop, send}
|
||||||
|
end;
|
||||||
|
filter_chat_states(Action, _Stanza) -> Action.
|
Loading…
Reference in New Issue
Block a user