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annotate mod_throttle_presence/mod_throttle_presence.lua @ 1748:0697fbef9134

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mod_mamsub: Prevent nil indexing if message is added to archive of an offline user
author Kim Alvefur <zash@zash.se>
date Mon, 18 May 2015 03:31:53 +0200
parents b8164f18142a
children 34468d3bfcac
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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d8c50448d0e7 mod_throttle_presence: Remove timer support, depend on mod_csi to enable/disable. Untested, but the previous version was definitely broken anyway.
Matthew Wild <mwild1@gmail.com>
parents: 162
diff changeset
1 local filters = require "util.filters";
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parents: 162
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2 local st = require "util.stanza";
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parents:
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3
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4 module:depends("csi");
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5
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parents: 162
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6 local function presence_filter(stanza, session)
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7 if stanza._flush then
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8 stanza._flush = nil;
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9 return stanza;
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10 end
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parents: 162
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11 local buffer = session.presence_buffer;
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parents: 162
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12 local from = stanza.attr.from;
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parents: 162
diff changeset
13 if stanza.name ~= "presence" or (stanza.attr.type and stanza.attr.type ~= "unavailable") then
d8c50448d0e7 mod_throttle_presence: Remove timer support, depend on mod_csi to enable/disable. Untested, but the previous version was definitely broken anyway.
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parents: 162
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14 local cached_presence = buffer[stanza.attr.from];
d8c50448d0e7 mod_throttle_presence: Remove timer support, depend on mod_csi to enable/disable. Untested, but the previous version was definitely broken anyway.
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parents: 162
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15 if cached_presence then
d8c50448d0e7 mod_throttle_presence: Remove timer support, depend on mod_csi to enable/disable. Untested, but the previous version was definitely broken anyway.
Matthew Wild <mwild1@gmail.com>
parents: 162
diff changeset
16 module:log("debug", "Important stanza for %s from %s, flushing presence", session.full_jid, from);
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parents: 1489
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17 stanza._flush = true;
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18 cached_presence._flush = true;
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parents: 162
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19 session.send(cached_presence);
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parents: 162
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20 buffer[stanza.attr.from] = nil;
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21 end
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parents: 162
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22 else
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parents: 162
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23 module:log("debug", "Buffering presence stanza from %s to %s", stanza.attr.from, session.full_jid);
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parents: 1488
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24 buffer[stanza.attr.from] = st.clone(stanza);
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parents: 162
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25 return nil; -- Drop this stanza (we've stored it for later)
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26 end
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parents: 162
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27 return stanza;
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parents:
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28 end
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parents:
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parents: 162
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30 local function throttle_session(event)
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31 local session = event.origin;
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Matthew Wild <mwild1@gmail.com>
parents: 162
diff changeset
32 if session.presence_buffer then return; end
d8c50448d0e7 mod_throttle_presence: Remove timer support, depend on mod_csi to enable/disable. Untested, but the previous version was definitely broken anyway.
Matthew Wild <mwild1@gmail.com>
parents: 162
diff changeset
33 module:log("debug", "Suppressing presence updates to %s", session.full_jid);
d8c50448d0e7 mod_throttle_presence: Remove timer support, depend on mod_csi to enable/disable. Untested, but the previous version was definitely broken anyway.
Matthew Wild <mwild1@gmail.com>
parents: 162
diff changeset
34 session.presence_buffer = {};
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Matthew Wild <mwild1@gmail.com>
parents: 162
diff changeset
35 filters.add_filter(session, "stanzas/out", presence_filter);
d8c50448d0e7 mod_throttle_presence: Remove timer support, depend on mod_csi to enable/disable. Untested, but the previous version was definitely broken anyway.
Matthew Wild <mwild1@gmail.com>
parents: 162
diff changeset
36 end
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parents:
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37
1485
d8c50448d0e7 mod_throttle_presence: Remove timer support, depend on mod_csi to enable/disable. Untested, but the previous version was definitely broken anyway.
Matthew Wild <mwild1@gmail.com>
parents: 162
diff changeset
38 local function restore_session(event)
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39 local session = event.origin;
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d8c50448d0e7 mod_throttle_presence: Remove timer support, depend on mod_csi to enable/disable. Untested, but the previous version was definitely broken anyway.
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parents: 162
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40 if not session.presence_buffer then return; end
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Matthew Wild <mwild1@gmail.com>
parents: 162
diff changeset
41 filters.remove_filter(session, "stanzas/out", presence_filter);
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parents: 162
diff changeset
42 module:log("debug", "Flushing buffer for %s", session.full_jid);
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parents: 162
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43 for jid, presence in pairs(session.presence_buffer) do
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parents: 162
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44 session.send(presence);
d8c50448d0e7 mod_throttle_presence: Remove timer support, depend on mod_csi to enable/disable. Untested, but the previous version was definitely broken anyway.
Matthew Wild <mwild1@gmail.com>
parents: 162
diff changeset
45 end
d8c50448d0e7 mod_throttle_presence: Remove timer support, depend on mod_csi to enable/disable. Untested, but the previous version was definitely broken anyway.
Matthew Wild <mwild1@gmail.com>
parents: 162
diff changeset
46 session.presence_buffer = nil;
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Matthew Wild <mwild1@gmail.com>
parents: 162
diff changeset
47 end
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parents: 162
diff changeset
48
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parents: 162
diff changeset
49 module:hook("csi-client-inactive", throttle_session);
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parents: 162
diff changeset
50 module:hook("csi-client-active", restore_session);