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annotate mod_pubsub_github/mod_pubsub_github.lua @ 3264:f48bedd1d433

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mod_pubsub_github: Add support for signed requests
author Kim Alvefur <zash@zash.se>
date Fri, 24 Aug 2018 17:49:53 +0200
parents a65f4297264b
children d4207ab8ccc1
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1 module:depends("http");
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2
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3 local st = require "util.stanza";
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4 local json = require "util.json";
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5 local formdecode = require "net.http".formdecode;
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6 local hmac_sha1 = require "util.hashes".hmac_sha1;
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7
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8 local pubsub_service = module:depends("pubsub").service;
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9 local node = module:get_option("github_node", "github");
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10 local secret = module:get_option("github_secret");
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11
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12 function handle_POST(event)
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13 local request = event.request;
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14 if secret and ("sha1=" .. hmac_sha1(secret, request.body, true)) ~= request.headers.x_hub_signature then
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15 return 401;
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16 end
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17 local data = json.decode(request.body);
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18 if not data then
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19 return "Invalid JSON. From you of all people...";
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20 end
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21
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22 for _, commit in ipairs(data.commits) do
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23 local ok, err = pubsub_service:publish(node, true, data.repository.name,
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24 st.stanza("item", { id = data.repository.name, xmlns = "http://jabber.org/protocol/pubsub" })
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25 :tag("entry", { xmlns = "http://www.w3.org/2005/Atom" })
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26 :tag("id"):text(commit.id):up()
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27 :tag("title"):text(commit.message):up()
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28 :tag("link", { rel = "alternate", href = commit.url }):up()
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29 :tag("published"):text(commit.timestamp):up()
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30 :tag("author")
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31 :tag("name"):text(commit.author.name):up()
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32 :tag("email"):text(commit.author.email):up()
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33 :up()
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34 );
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35 end
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36
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37 module:log("debug", "Handled POST: \n%s\n", tostring(request.body));
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38 return "Thank you Github!";
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39 end
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40
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41 module:provides("http", {
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42 route = {
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43 POST = handle_POST;
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44 };
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45 });
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46
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47 function module.load()
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48 if not pubsub_service.nodes[node] then
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49 local ok, err = pubsub_service:create(node, true);
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50 if not ok then
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51 module:log("error", "Error creating node: %s", err);
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52 else
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53 module:log("debug", "Node %q created", node);
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54 end
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55 end
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56 end