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annotate mod_broadcast/mod_broadcast.lua @ 3503:882180b459a0

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mod_pubsub_post: Restructure authentication and authorization (BC) This deprecates the default "superuser" actor model and makes the default equivalent to the previous "request.id". A single actor and secret per node is supported because HTTP and WebHooks don't normally include any authorization identity. Allowing authentication bypass when no secret is given should be relatively safe when the actor is unprivileged, as will be unless explicitly configured otherwise.
author Kim Alvefur <zash@zash.se>
date Sat, 30 Mar 2019 21:16:13 +0100
parents 9f7c97e55593
children
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1 local is_admin = require "core.usermanager".is_admin;
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2 local allowed_senders = module:get_option_set("broadcast_senders", {});
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3 local from_address = module:get_option_string("broadcast_from");
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5 local jid_bare = require "util.jid".bare;
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7 function send_to_online(message)
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8 local c = 0;
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9 for hostname, host_session in pairs(hosts) do
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10 if host_session.sessions then
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11 for username in pairs(host_session.sessions) do
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12 c = c + 1;
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13 message.attr.to = username.."@"..hostname;
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14 module:send(message);
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15 end
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16 end
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17 end
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18 return c;
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19 end
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21 function send_message(event)
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22 local stanza = event.stanza;
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23 local from = stanza.attr.from;
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24 if is_admin(from) or allowed_senders:contains(jid_bare(from)) then
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25 if from_address then
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26 stanza = st.clone(stanza);
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27 stanza.attr.from = from_address;
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28 end
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29 local c = send_to_online(stanza);
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30 module:log("debug", "Broadcast stanza from %s to %d online users", from, c);
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31 return true;
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32 else
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33 module:log("warn", "Broadcasting is not allowed for %s", from);
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34 end
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35 end
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37 module:hook("message/bare", send_message);