Mercurial > prosody-modules

annotate mod_http_altconnect/mod_http_altconnect.lua @ 5448:9d542e86e19a

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mod_http_oauth2: Allow requesting a subset of scopes on token refresh This enables clients to request access tokens with fewer permissions than the grant they were given, reducing impact of token leak. Clients could e.g. request access tokens with some privileges and immediately revoke them after use, or other strategies.
author Kim Alvefur <zash@zash.se>
date Thu, 11 May 2023 21:40:09 +0200
parents 0a0bf87ccda6
children
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1 -- mod_http_altconnect
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2 -- XEP-0156: Discovering Alternative XMPP Connection Methods
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3
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4 module:depends"http";
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5
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6 local mm = require "core.modulemanager";
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7 local json = require"util.json";
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8 local st = require"util.stanza";
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9 local array = require"util.array";
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10
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11 local function get_supported()
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12 local uris = array();
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13 if mm.is_loaded(module.host, "bosh") or mm.is_loaded("*", "bosh") then
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14 uris:push({ rel = "urn:xmpp:alt-connections:xbosh", href = module:http_url("bosh", "/http-bind") });
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15 end
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16 if mm.is_loaded(module.host, "websocket") or mm.is_loaded("*", "websocket") then
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17 uris:push({ rel = "urn:xmpp:alt-connections:websocket", href = module:http_url("websocket", "xmpp-websocket"):gsub("^http", "ws") });
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18 end
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19 return uris;
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20 end
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23 local function GET_xml(event)
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24 local request, response = event.request, event.response;
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25 local xrd = st.stanza("XRD", { xmlns='http://docs.oasis-open.org/ns/xri/xrd-1.0' });
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26 local uris = get_supported();
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27 for i, method in ipairs(uris) do
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28 xrd:tag("Link", method):up();
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29 end
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30 response.headers.content_type = "application/xrd+xml"
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31 response.headers.access_control_allow_origin = "*";
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32 return '<?xml version="1.0" encoding="UTF-8"?>' .. tostring(xrd);
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33 end
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34
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35 local function GET_json(event)
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36 local request, response = event.request, event.response;
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37 local jrd = { links = get_supported() };
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38 response.headers.content_type = "application/json"
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39 response.headers.access_control_allow_origin = "*";
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40 return json.encode(jrd);
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41 end;
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42
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43 local function GET_either(event)
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44 local accept_type = event.request.headers.accept or "";
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45 if ( accept_type:find("xml") or #accept_type ) < ( accept_type:find("json") or #accept_type+1 ) then
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46 return GET_xml(event);
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47 else
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48 return GET_json(event);
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49 end
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50 end;
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51
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52 module:provides("http", {
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53 default_path = "/.well-known";
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54 route = {
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55 ["GET /host-meta"] = GET_either;
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56 -- ["GET /host-meta.xml"] = GET_xml; -- Hmmm
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57 ["GET /host-meta.json"] = GET_json;
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58 };
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59 });