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annotate mod_ogp/mod_ogp.lua @ 4268:871d140d61bb

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mod_adhoc_oauth2_client: Fix including final client_id in result form The client_id is composed of the details needed for retrieving the data, making it redundant to include in the data, albeit somewhat convenient sometimes. Decided to remove it anyways, but forgot to change the result.
author Kim Alvefur <zash@zash.se>
date Sun, 22 Nov 2020 17:00:26 +0100
parents 38da10e4b593
children dbfda7f5522d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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)