Mercurial > prosody-modules

annotate mod_ogp/mod_ogp.lua @ 4282:281a864e7472

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mod_pubsub_feeds: Don't skip publishing items after an existing one I encountered a feed which was backwards, such that older entries were considered first and then it would skip newer entries. This may however run into trouble if the feed contains more items than what's persisted in pubsub.
author Kim Alvefur <zash@zash.se>
date Mon, 30 Nov 2020 15:17:29 +0100
parents 38da10e4b593
children dbfda7f5522d
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1 local mod_muc = module:depends("muc")
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2 local http = require "net.http"
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3 local st = require "util.stanza"
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4
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5 local ogp_pattern = [[<meta property=["']?(og:.-)["']? content=%s*["']?(.-)["']?%s-/?>]]
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6 local ogp_pattern2 = [[<meta content=%s*["']?(.-)["']? property=["']?(og:.-)["']?%s-/?>]]
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7 local url_pattern = [[https?://%S+]]
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8
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9 local function ogp_handler(event)
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10 local room, stanza = event.room, st.clone(event.stanza)
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11 local body = stanza:get_child_text("body")
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12 if not body then return; end
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13
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14 local url = body:match(url_pattern)
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15 if not url then return; end
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16
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17 local origin_id = stanza:find("{urn:xmpp:sid:0}origin-id@id")
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18 if not origin_id then return; end
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19
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20 http.request(
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21 url,
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22 nil,
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23 function(response_body, response_code, _)
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24 if response_code ~= 200 then
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25 return
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26 end
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27
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28 local to = room.jid
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29 local from = room and room.jid or module.host
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30 local fastening = st.message({to = to, from = from}):tag("apply-to", {xmlns = "urn:xmpp:fasten:0", id = origin_id})
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31 local found_metadata = false
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32 local message_body = ""
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33
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34 local meta_pattern = [[<meta (.-)/?>]]
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35 for match in response_body:gmatch(meta_pattern) do
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36 local property = match:match([[property=%s*["']?(og:.-)["']?%s]])
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37 if not property then
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38 property = match:match([[property=["']?(og:.-)["']$]])
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39 end
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40
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41 local content = match:match([[content=%s*["'](.-)["']%s]])
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42 if not content then
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43 content = match:match([[content=["']?(.-)["']$]])
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44 end
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45 if not content then
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46 content = match:match([[content=(.-) property]])
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47 end
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48 if not content then
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49 content = match:match([[content=(.-)$]])
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50 end
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51
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52 if property and content then
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53 module:log("info", property .. "\t" .. content)
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54 fastening:tag(
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55 "meta",
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56 {
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57 xmlns = "http://www.w3.org/1999/xhtml",
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58 property = property,
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59 content = content
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60 }
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61 ):up()
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62 found_metadata = true
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63 message_body = message_body .. property .. "\t" .. content .. "\n"
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64 end
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65 end
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66
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67
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68 if found_metadata then
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69 mod_muc.get_room_from_jid(room.jid):broadcast_message(fastening)
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70 end
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71 module:log("info", tostring(fastening))
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72 end
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73 )
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74 end
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75
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76 module:hook("muc-occupant-groupchat", ogp_handler)