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annotate mod_muc_block_pm/mod_muc_block_pm.lua @ 4738:5aee8d86629a

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mod_bookmarks2: Fix handling of nick and password elements This form of child retrieval fails when the stanza elements internally don't have an 'xmlns' attribute, which can happen sometimes for some reason, including when they have been constructed via the stanza builder API. When that is the case then the explicit namespace arguemnt does not match the nil value of the internal attribute. Calling `:get_child()` without the namespace argument does the right thing here, with both nil and the parent namespace as valid values for the internal attribute.
author Kim Alvefur <zash@zash.se>
date Wed, 03 Nov 2021 21:11:55 +0100
parents 291a45919988
children c7e532ac6bf7
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69d3e0037435 mod_muc_block_pm: Prevent unaffiliated users from sending private messages in MUC
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1 local bare_jid = require"util.jid".bare;
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2 local st = require"util.stanza";
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3
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4 -- Support both old and new MUC code
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5 local mod_muc = module:depends"muc";
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6 local rooms = rawget(mod_muc, "rooms");
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7 local get_room_from_jid = rawget(mod_muc, "get_room_from_jid") or
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8 function (jid)
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9 return rooms[jid];
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10 end
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11
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12 module:hook("message/full", function(event)
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13 local stanza, origin = event.stanza, event.origin;
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14 if stanza.attr.type == "error" then
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15 return
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16 end
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17 local to, from = stanza.attr.to, stanza.attr.from;
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18 local room = get_room_from_jid(bare_jid(to));
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19 local to_occupant = room and room._occupants[to];
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20 local from_occupant = room and room._occupants[room._jid_nick[from]]
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21 if not ( to_occupant and from_occupant ) then return end
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22
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23 if from_occupant.affiliation then
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24 to_occupant._pm_block_override = true;
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25 elseif not from_occupant._pm_block_override then
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26 origin.send(st.error_reply(stanza, "cancel", "not-authorized", "Private messages are disabled"));
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27 return true;
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28 end
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29 end, 1);