annotate mod_isr/mod_isr.lua @ 5576:c729a38f21b1

mod_pubsub_feeds: Handle node already existing Don't need to create it if it exists
author Kim Alvefur <zash@zash.se>
date Sun, 25 Jun 2023 19:52:24 +0200
parents 1cb762f72a91
children
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1 local st = require "util.stanza";
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2
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3 local mod_smacks = module:depends("smacks");
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4
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5 local xmlns_sasl2 = "urn:xmpp:sasl:1";
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6 local xmlns_sm = "urn:xmpp:sm:3";
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7 local xmlns_isr = "https://xmpp.org/extensions/isr/0";
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8 local xmlns_errors = "urn:ietf:params:xml:ns:xmpp-stanzas";
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9
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10 module:hook_tag(xmlns_sasl2, "authenticate", function (session, auth)
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11 local isr_resume = auth:get_child("inst-resume", xmlns_isr);
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12 if not isr_resume then return end
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13 local is_using_token = isr_resume.attr["with-isr-token"] ~= "false";
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14 if is_using_token then
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15 -- TODO: If authing with token, set session.sasl_handler to our own
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16 -- event.session.sasl_handler = ...
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17 error("not yet implemented");
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18 end
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19
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20 -- Cache resume element for future processing after SASL success
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21 session.isr_sm_resume = isr_resume:get_child("resume", "urn:xmpp:sm:3");
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22 end, 100);
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23
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24 module:hook("sasl2/c2s/success", function (event)
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25 local session = event.session;
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26 local sm_resume = session.isr_sm_resume;
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27 if sm_resume then
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28 session.isr_sm_resume = nil;
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29 local resumed, err = mod_smacks.do_resume(session, sm_resume);
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30 if not resumed then
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31 local failed = st.stanza("failed", { xmlns = xmlns_sm, h = ("%d"):format(err.context.h) })
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32 :tag(err.condition, { xmlns = xmlns_errors });
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33 event.success:add_child(failed);
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34 else
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35 event.session = resumed.session;
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36 event.isr_resumed = resumed;
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37 event.success:tag("resumed", { xmlns = xmlns_sm,
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38 h = ("%d"):format(event.session.handled_stanza_count);
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39 previd = resumed.id; }):up();
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40 end
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41 end
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42 end, 100);
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43
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44 module:hook("sasl2/c2s/success", function (event)
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45 -- The authenticate response has already been sent at this point
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46 local resumed = event.isr_resumed;
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47 if resumed then
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48 resumed.finish(); -- Finish resume and sync stanzas
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49 end
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50 end, -1100);
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51
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52 module:hook("sasl2/c2s/failure", function (event)
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53 event.session.isr_sm_resume = nil;
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54 end);
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55