prosody-modules
0860497152af
mod_mamsub/mod_mamsub.lua

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mod_mamsub/mod_mamsub.lua @ 5511:0860497152af

mod_http_oauth2: Record hash of client_id to allow future verification RFC 6819 section 5.2.2.2 states that refresh tokens MUST be bound to the client. In order to do that, we must record something that can definitely tie the client to the grant. Since the full client_id is so large (why we have this client_subset function), a hash is stored instead.
author Kim Alvefur <zash@zash.se>
date Fri, 02 Jun 2023 10:14:16 +0200
parent 1748:0697fbef9134
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1747
985e05ac833b mod_mamsub: Experimental implementation of MAM subscriptions
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1 -- MAM Subscriptions prototype
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2 -- Copyright (C) 2015 Kim Alvefur
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3 --
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4 -- This file is MIT/X11 licensed.
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5
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6 local mt = require"util.multitable";
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7 local st = require"util.stanza";
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8
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9 local xmlns_mamsub = "http://prosody.im/protocol/mamsub";
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10
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11 module:add_feature(xmlns_mamsub);
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12
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13 local host_sessions = prosody.hosts[module.host].sessions;
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14
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15 local weak = { __mode = "k" };
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16
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17 module:hook("iq-set/self/"..xmlns_mamsub..":subscribe", function (event)
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18 local origin, stanza = event.origin, event.stanza;
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19 if origin.mamsub ~= nil then
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20 origin.send(st.error_reply(stanza, "modify", "conflict"));
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21 return true;
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22 end
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23 origin.mamsub = xmlns_mamsub;
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24 local mamsub_sessions = host_sessions[origin.username].mamsub_sessions;
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25 if not mamsub_sessions then
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26 mamsub_sessions = setmetatable({}, weak);
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27 host_sessions[origin.username].mamsub_sessions = mamsub_sessions;
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28 end
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29 mamsub_sessions[origin] = true;
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30 origin.send(st.reply(stanza));
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31 return true;
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32 end);
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33
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34 module:hook("iq-set/self/"..xmlns_mamsub..":unsubscribe", function (event)
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35 local origin, stanza = event.origin, event.stanza;
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36 if origin.mamsub ~= xmlns_mamsub then
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37 origin.send(st.error_reply(stanza, "modify", "conflict"));
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38 return true;
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39 end
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40 origin.mamsub = nil;
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41 local mamsub_sessions = host_sessions[origin.username].mamsub_sessions;
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42 if mamsub_sessions then
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43 mamsub_sessions[origin] = nil;
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44 end
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45 origin.send(st.reply(stanza));
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46 return true;
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47 end);
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48
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49 module:hook("archive-message-added", function (event)
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50 local user_session = host_sessions[event.for_user];
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51 local mamsub_sessions = user_session and user_session.mamsub_sessions;
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52 if not mamsub_sessions then return end;
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53
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54 local for_broadcast = st.message():tag("mamsub", { xmlns = xmlns_mamsub })
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55 :tag("forwarded", { xmlns = "urn:xmpp:forward:0" })
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56 :add_child(event.stanza);
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57
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58 for session in pairs(mamsub_sessions) do
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59 if session.mamsub == xmlns_mamsub then
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60 for_broadcast.attr.to = session.full_jid;
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61 session.send(for_broadcast);
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62 end
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63 end
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64 end);