annotate mod_ogp/mod_ogp.lua @ 5491:7842502c1157

mod_http_debug: Log some extended info about requests If you point something external at this module, you don't get the response body back, hence it can be useful to see some details in the log as well.
author Kim Alvefur <zash@zash.se>
date Fri, 26 May 2023 15:37:15 +0200
parents 09f0911c735d
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
4252
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
1 local mod_muc = module:depends("muc")
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
2 local http = require "net.http"
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
3 local st = require "util.stanza"
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
4 local url_pattern = [[https?://%S+]]
4483
c4f11a4b5ac7 mod_ogp: Add the ability to whitelist domains
JC Brand <jc@opkode.com>
parents: 4482
diff changeset
5 local domain_pattern = '^%w+://([^/]+)'
c4f11a4b5ac7 mod_ogp: Add the ability to whitelist domains
JC Brand <jc@opkode.com>
parents: 4482
diff changeset
6 local xmlns_fasten = "urn:xmpp:fasten:0"
c4f11a4b5ac7 mod_ogp: Add the ability to whitelist domains
JC Brand <jc@opkode.com>
parents: 4482
diff changeset
7 local xmlns_xhtml = "http://www.w3.org/1999/xhtml"
4598
09f0911c735d mod_ogp: Add the ability to block OGP fetching for certain domains
JC Brand <jc@opkode.com>
parents: 4504
diff changeset
8 local allowlist = module:get_option_set("ogp_domain_allowlist", module:get_option_set("ogp_domain_whitelist", {}))
09f0911c735d mod_ogp: Add the ability to block OGP fetching for certain domains
JC Brand <jc@opkode.com>
parents: 4504
diff changeset
9 local denylist = module:get_option_set("ogp_domain_denylist", {})
4483
c4f11a4b5ac7 mod_ogp: Add the ability to whitelist domains
JC Brand <jc@opkode.com>
parents: 4482
diff changeset
10
c4f11a4b5ac7 mod_ogp: Add the ability to whitelist domains
JC Brand <jc@opkode.com>
parents: 4482
diff changeset
11
4598
09f0911c735d mod_ogp: Add the ability to block OGP fetching for certain domains
JC Brand <jc@opkode.com>
parents: 4504
diff changeset
12 local function is_allowed(domain)
09f0911c735d mod_ogp: Add the ability to block OGP fetching for certain domains
JC Brand <jc@opkode.com>
parents: 4504
diff changeset
13 if allowlist:empty() then
09f0911c735d mod_ogp: Add the ability to block OGP fetching for certain domains
JC Brand <jc@opkode.com>
parents: 4504
diff changeset
14 return true
09f0911c735d mod_ogp: Add the ability to block OGP fetching for certain domains
JC Brand <jc@opkode.com>
parents: 4504
diff changeset
15 end
09f0911c735d mod_ogp: Add the ability to block OGP fetching for certain domains
JC Brand <jc@opkode.com>
parents: 4504
diff changeset
16 if allowlist:contains(domain) then
4483
c4f11a4b5ac7 mod_ogp: Add the ability to whitelist domains
JC Brand <jc@opkode.com>
parents: 4482
diff changeset
17 return true
c4f11a4b5ac7 mod_ogp: Add the ability to whitelist domains
JC Brand <jc@opkode.com>
parents: 4482
diff changeset
18 end
4598
09f0911c735d mod_ogp: Add the ability to block OGP fetching for certain domains
JC Brand <jc@opkode.com>
parents: 4504
diff changeset
19 return false
09f0911c735d mod_ogp: Add the ability to block OGP fetching for certain domains
JC Brand <jc@opkode.com>
parents: 4504
diff changeset
20 end
09f0911c735d mod_ogp: Add the ability to block OGP fetching for certain domains
JC Brand <jc@opkode.com>
parents: 4504
diff changeset
21
09f0911c735d mod_ogp: Add the ability to block OGP fetching for certain domains
JC Brand <jc@opkode.com>
parents: 4504
diff changeset
22 local function is_denied(domain)
09f0911c735d mod_ogp: Add the ability to block OGP fetching for certain domains
JC Brand <jc@opkode.com>
parents: 4504
diff changeset
23 if denylist:empty() then
09f0911c735d mod_ogp: Add the ability to block OGP fetching for certain domains
JC Brand <jc@opkode.com>
parents: 4504
diff changeset
24 return false
09f0911c735d mod_ogp: Add the ability to block OGP fetching for certain domains
JC Brand <jc@opkode.com>
parents: 4504
diff changeset
25 end
09f0911c735d mod_ogp: Add the ability to block OGP fetching for certain domains
JC Brand <jc@opkode.com>
parents: 4504
diff changeset
26 if denylist:contains(domain) then
09f0911c735d mod_ogp: Add the ability to block OGP fetching for certain domains
JC Brand <jc@opkode.com>
parents: 4504
diff changeset
27 return true
4483
c4f11a4b5ac7 mod_ogp: Add the ability to whitelist domains
JC Brand <jc@opkode.com>
parents: 4482
diff changeset
28 end
c4f11a4b5ac7 mod_ogp: Add the ability to whitelist domains
JC Brand <jc@opkode.com>
parents: 4482
diff changeset
29 return false
c4f11a4b5ac7 mod_ogp: Add the ability to whitelist domains
JC Brand <jc@opkode.com>
parents: 4482
diff changeset
30 end
4252
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
31
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
32
4482
21698b960bd6 mod_ogp: Add the ability to detect and process multiple URLs in a body
JC Brand <jc@opkode.com>
parents: 4459
diff changeset
33 local function fetch_ogp_data(room, url, origin_id)
4598
09f0911c735d mod_ogp: Add the ability to block OGP fetching for certain domains
JC Brand <jc@opkode.com>
parents: 4504
diff changeset
34 if not url then
09f0911c735d mod_ogp: Add the ability to block OGP fetching for certain domains
JC Brand <jc@opkode.com>
parents: 4504
diff changeset
35 return;
09f0911c735d mod_ogp: Add the ability to block OGP fetching for certain domains
JC Brand <jc@opkode.com>
parents: 4504
diff changeset
36 end
09f0911c735d mod_ogp: Add the ability to block OGP fetching for certain domains
JC Brand <jc@opkode.com>
parents: 4504
diff changeset
37
09f0911c735d mod_ogp: Add the ability to block OGP fetching for certain domains
JC Brand <jc@opkode.com>
parents: 4504
diff changeset
38 local domain = url:match(domain_pattern);
09f0911c735d mod_ogp: Add the ability to block OGP fetching for certain domains
JC Brand <jc@opkode.com>
parents: 4504
diff changeset
39 if is_denied(domain) or not is_allowed(domain) then
4483
c4f11a4b5ac7 mod_ogp: Add the ability to whitelist domains
JC Brand <jc@opkode.com>
parents: 4482
diff changeset
40 return;
c4f11a4b5ac7 mod_ogp: Add the ability to whitelist domains
JC Brand <jc@opkode.com>
parents: 4482
diff changeset
41 end
4252
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
42
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
43 http.request(
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
44 url,
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
45 nil,
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
46 function(response_body, response_code, _)
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
47 if response_code ~= 200 then
4504
0136c98f574c mod_ogp: Log error responses
JC Brand <jc@opkode.com>
parents: 4483
diff changeset
48 module:log("debug", "Call to %s returned code %s and body %s", url, response_code, response_body)
4252
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
49 return
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
50 end
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
51
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
52 local to = room.jid
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
53 local from = room and room.jid or module.host
4459
dbfda7f5522d mod_ogp: Make sure OGP fasten messages get archived
JC Brand <jc@opkode.com>
parents: 4255
diff changeset
54 local fastening = st.message({to = to, from = from, type = 'groupchat'}):tag("apply-to", {xmlns = xmlns_fasten, id = origin_id})
4252
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
55 local found_metadata = false
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
56 local message_body = ""
4255
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
57
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
58 local meta_pattern = [[<meta (.-)/?>]]
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
59 for match in response_body:gmatch(meta_pattern) do
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
60 local property = match:match([[property=%s*["']?(og:.-)["']?%s]])
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
61 if not property then
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
62 property = match:match([[property=["']?(og:.-)["']$]])
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
63 end
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
64
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
65 local content = match:match([[content=%s*["'](.-)["']%s]])
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
66 if not content then
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
67 content = match:match([[content=["']?(.-)["']$]])
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
68 end
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
69 if not content then
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
70 content = match:match([[content=(.-) property]])
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
71 end
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
72 if not content then
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
73 content = match:match([[content=(.-)$]])
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
74 end
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
75
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
76 if property and content then
4504
0136c98f574c mod_ogp: Log error responses
JC Brand <jc@opkode.com>
parents: 4483
diff changeset
77 module:log("debug", property .. "\t" .. content)
4255
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
78 fastening:tag(
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
79 "meta",
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
80 {
4459
dbfda7f5522d mod_ogp: Make sure OGP fasten messages get archived
JC Brand <jc@opkode.com>
parents: 4255
diff changeset
81 xmlns = xmlns_xhtml,
4255
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
82 property = property,
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
83 content = content
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
84 }
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
85 ):up()
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
86 found_metadata = true
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
87 message_body = message_body .. property .. "\t" .. content .. "\n"
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
88 end
4252
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
89 end
4255
38da10e4b593 mod_ogp: Update parsing logic to catch more cases
Seve Ferrer <seve@delape.net>
parents: 4254
diff changeset
90
4252
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
91 if found_metadata then
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
92 mod_muc.get_room_from_jid(room.jid):broadcast_message(fastening)
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
93 end
4504
0136c98f574c mod_ogp: Log error responses
JC Brand <jc@opkode.com>
parents: 4483
diff changeset
94 module:log("debug", tostring(fastening))
4252
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
95 end
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
96 )
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
97 end
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
98
4482
21698b960bd6 mod_ogp: Add the ability to detect and process multiple URLs in a body
JC Brand <jc@opkode.com>
parents: 4459
diff changeset
99 local function ogp_handler(event)
21698b960bd6 mod_ogp: Add the ability to detect and process multiple URLs in a body
JC Brand <jc@opkode.com>
parents: 4459
diff changeset
100 local room, stanza = event.room, st.clone(event.stanza)
21698b960bd6 mod_ogp: Add the ability to detect and process multiple URLs in a body
JC Brand <jc@opkode.com>
parents: 4459
diff changeset
101 local body = stanza:get_child_text("body")
21698b960bd6 mod_ogp: Add the ability to detect and process multiple URLs in a body
JC Brand <jc@opkode.com>
parents: 4459
diff changeset
102
21698b960bd6 mod_ogp: Add the ability to detect and process multiple URLs in a body
JC Brand <jc@opkode.com>
parents: 4459
diff changeset
103 if not body then return; end
21698b960bd6 mod_ogp: Add the ability to detect and process multiple URLs in a body
JC Brand <jc@opkode.com>
parents: 4459
diff changeset
104
21698b960bd6 mod_ogp: Add the ability to detect and process multiple URLs in a body
JC Brand <jc@opkode.com>
parents: 4459
diff changeset
105 local origin_id = stanza:find("{urn:xmpp:sid:0}origin-id@id")
21698b960bd6 mod_ogp: Add the ability to detect and process multiple URLs in a body
JC Brand <jc@opkode.com>
parents: 4459
diff changeset
106 if not origin_id then return; end
21698b960bd6 mod_ogp: Add the ability to detect and process multiple URLs in a body
JC Brand <jc@opkode.com>
parents: 4459
diff changeset
107
21698b960bd6 mod_ogp: Add the ability to detect and process multiple URLs in a body
JC Brand <jc@opkode.com>
parents: 4459
diff changeset
108 for url in body:gmatch(url_pattern) do
21698b960bd6 mod_ogp: Add the ability to detect and process multiple URLs in a body
JC Brand <jc@opkode.com>
parents: 4459
diff changeset
109 fetch_ogp_data(room, url, origin_id);
21698b960bd6 mod_ogp: Add the ability to detect and process multiple URLs in a body
JC Brand <jc@opkode.com>
parents: 4459
diff changeset
110 end
21698b960bd6 mod_ogp: Add the ability to detect and process multiple URLs in a body
JC Brand <jc@opkode.com>
parents: 4459
diff changeset
111 end
21698b960bd6 mod_ogp: Add the ability to detect and process multiple URLs in a body
JC Brand <jc@opkode.com>
parents: 4459
diff changeset
112
4252
1327e1e1c94e mod_ogp: Add module
Seve Ferrer <seve@delape.net>
parents:
diff changeset
113 module:hook("muc-occupant-groupchat", ogp_handler)
4459
dbfda7f5522d mod_ogp: Make sure OGP fasten messages get archived
JC Brand <jc@opkode.com>
parents: 4255
diff changeset
114
dbfda7f5522d mod_ogp: Make sure OGP fasten messages get archived
JC Brand <jc@opkode.com>
parents: 4255
diff changeset
115
dbfda7f5522d mod_ogp: Make sure OGP fasten messages get archived
JC Brand <jc@opkode.com>
parents: 4255
diff changeset
116 module:hook("muc-message-is-historic", function (event)
dbfda7f5522d mod_ogp: Make sure OGP fasten messages get archived
JC Brand <jc@opkode.com>
parents: 4255
diff changeset
117 local fastening = event.stanza:get_child('apply-to', xmlns_fasten)
dbfda7f5522d mod_ogp: Make sure OGP fasten messages get archived
JC Brand <jc@opkode.com>
parents: 4255
diff changeset
118 if fastening and fastening:get_child('meta', xmlns_xhtml) then
dbfda7f5522d mod_ogp: Make sure OGP fasten messages get archived
JC Brand <jc@opkode.com>
parents: 4255
diff changeset
119 return true
dbfda7f5522d mod_ogp: Make sure OGP fasten messages get archived
JC Brand <jc@opkode.com>
parents: 4255
diff changeset
120 end
dbfda7f5522d mod_ogp: Make sure OGP fasten messages get archived
JC Brand <jc@opkode.com>
parents: 4255
diff changeset
121 end);