annotate mod_pubsub_twitter/mod_pubsub_twitter.lua @ 5255:001c8fdc91a4

mod_http_oauth2: Add support for the "openid" scope This "openid" scope is there to signal access to the userinfo endpoint, which is needed for OIDC support. We don't actually check this later because the userinfo endpoint only returns info embedded in the token itself, but in the future we may want to check this more carefully.
author Kim Alvefur <zash@zash.se>
date Thu, 16 Mar 2023 17:06:35 +0100
parents 7dbde05b48a9
children
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1 -- Publishes Twitter search results over pubsub
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2 --
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3 -- Config:
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4 -- Component "pubsub.example.com" "pubsub"
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5 -- modules_enabled = {
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6 -- "pubsub_twitter";
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7 -- }
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8 -- twitter_searches = { -- node -> query
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9 -- prosody = "prosody xmpp";
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10 -- }
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11 -- twitter_pull_interval = 20 -- minutes
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12 --
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14 local pubsub = module:depends"pubsub";
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15
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16 local json = require "util.json";
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17 local http = require "net.http";
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18 local set = require "util.set";
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19 local it = require "util.iterators";
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20 local array = require "util.array";
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21
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22 local st = require "util.stanza";
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23 --local dump = require"util.serialization".serialize;
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24
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25 local xmlns_atom = "http://www.w3.org/2005/Atom";
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27 local twitter_searches = module:get_option("twitter_searches", {});
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28 local refresh_interval = module:get_option_number("twitter_pull_interval", 20) * 60;
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29 local api_url = module:get_option_string("twitter_search_url", "http://search.twitter.com/search.json");
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30
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31 local month_number = {
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32 Jan = "01", Feb = "02", Mar = "03";
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33 Apr = "04", May = "05", Jun = "06";
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34 Jul = "07", Aug = "08", Sep = "09";
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35 Oct = "10", Nov = "11", Dec = "12";
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36 };
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37
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38 local active_searches = {};
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39
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40 local function publish_result(search_name, result)
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41 local node, id = search_name, result.id_str;
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42 --"Tue, 02 Apr 2013 15:40:54 +0000"
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43 local timestamp_date, timestamp_month, timestamp_year, timestamp_time =
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44 result.created_at:match(" (%d+) (%a+) (%d+) (%d%d:%d%d:%d%d)");
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46 local timestamp = ("%s-%s-%sT%sZ"):format(timestamp_year, month_number[timestamp_month], timestamp_date, timestamp_time);
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47
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48 local item = st.stanza("item", { xmlns = "http://jabber.org/protocol/pubsub", id = id })
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49 :tag("entry", { xmlns = xmlns_atom })
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50 :tag("id"):text(id):up()
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51 :tag("author")
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52 :tag("name"):text(result.from_user_name.." (@"..result.from_user..")"):up()
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53 :tag("uri"):text("http://twitter.com/"..result.from_user):up()
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54 :up()
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55 :tag("published"):text(timestamp):up()
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56 :tag("title"):text(result.text):up()
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57 :tag("link", { rel = "alternate" , href = "https://twitter.com/"..result.from_user.."/status/"..id}):up();
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58
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59 module:log("debug", "Publishing Twitter result: %s", tostring(item));
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60
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61 local ok, err = pubsub.service:publish(node, true, id, item);
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62 if not ok then
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63 if err == "item-not-found" then -- try again
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64 local ok, err = pubsub.service:create(node, true);
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65 if not ok then
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66 module:log("error", "could not create node %s: %s", node, err);
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67 return;
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68 end
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69 local ok, err = pubsub.service:publish(node, true, id, item);
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70 if not ok then
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71 module:log("error", "could not create or publish node %s: %s", node, err);
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72 return
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73 end
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74 else
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75 module:log("error", "publishing %s failed: %s", node, err);
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76 end
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77 end
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78 end
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79
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80 local function is_retweet(tweet)
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81 return not not tweet.text:match("^RT ");
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82 end
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83
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84 function update_all()
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85 module:log("debug", "Updating all searches");
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86 for name, search in pairs(active_searches) do
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87 module:log("debug", "Fetching new results for '%s'", name);
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88 http.request(search.refresh_url or search.url, nil, function (result_json, code)
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89 if code ~= 200 then
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90 module:log("warn", "Twitter search query '%s' failed with code %d", name, code);
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91 return;
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92 end
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93 local response = json.decode(result_json);
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94 module:log("debug", "Processing %d results for %s", #response.results, name);
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95 search.refresh_url = api_url..response.refresh_url;
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96 for _, result in ipairs(response.results) do
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97 if not is_retweet(result) then
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98 publish_result(name, result);
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99 end
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100 end
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101 end);
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102 end
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103 return refresh_interval;
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104 end
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105
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106 function module.load()
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107 local config_searches = set.new(array.collect(it.keys(twitter_searches)));
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108 local current_searches = set.new(array.collect(it.keys(active_searches)));
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109
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110 local disable_searches = current_searches - config_searches;
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111 local new_searches = config_searches - current_searches;
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112
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113 for search_name in disable_searches do
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114 module:log("debug", "Disabled old Twitter search '%s'", search_name);
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115 active_searches[search_name] = nil;
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116 end
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117
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118 for search_name in new_searches do
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119 module:log("debug", "Created new Twitter search '%s'", search_name);
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120 local query = twitter_searches[search_name];
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121 active_searches[search_name] = {
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122 url = api_url.."?q="..http.urlencode(query);
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123 };
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124 end
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125 end
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126
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127 module:add_timer(5, update_all);