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annotate mod_ogp/mod_ogp.lua @ 4340:7cd3b7ec59e9

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mod_http_oauth2: Rudimentary support for scopes (but not really) We don't support limiting access, but this change will inform the client what permissions the created token has (e.g. is the user an admin or not). There is some work in progress on real scope support.
author Matthew Wild <mwild1@gmail.com>
date Sat, 16 Jan 2021 19:47:22 +0000
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)