annotate mod_isr/mod_isr.lua @ 5186:fa3059e653fa

mod_http_oauth2: Implement the Implicit flow Everyone says this is insecure and bad, but it's also the only thing that makes sense for e.g. pure JavaScript clients, but hey implement this even more complicated thing instead!
author Kim Alvefur <zash@zash.se>
date Thu, 02 Mar 2023 22:06:50 +0100
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