|
1
|
/**
|
|
2
|
* Hachette handling of page actions in content scripts
|
|
3
|
*
|
|
4
|
* Copyright (C) 2021 Wojtek Kosior
|
|
5
|
* Redistribution terms are gathered in the `copyright' file.
|
|
6
|
*/
|
|
7
|
|
|
8
|
/*
|
|
9
|
* IMPORTS_START
|
|
10
|
* IMPORT CONNECTION_TYPE
|
|
11
|
* IMPORT browser
|
|
12
|
* IMPORT report_script
|
|
13
|
* IMPORT report_settings
|
|
14
|
* IMPORT report_content_type
|
|
15
|
* IMPORTS_END
|
|
16
|
*/
|
|
17
|
|
|
18
|
let policy_received_callback;
|
|
19
|
/* Snapshot url and content type early; these can be changed by other code. */
|
|
20
|
let url;
|
|
21
|
let is_html;
|
|
22
|
let port;
|
|
23
|
let loaded = false;
|
|
24
|
let scripts_awaiting = [];
|
|
25
|
let nonce;
|
|
26
|
|
|
27
|
function handle_message(message)
|
|
28
|
{
|
|
29
|
const [action, data] = message;
|
|
30
|
|
|
31
|
if (action === "inject") {
|
|
32
|
for (let script_text of data) {
|
|
33
|
if (loaded)
|
|
34
|
add_script(script_text);
|
|
35
|
else
|
|
36
|
scripts_awaiting.push(script_text);
|
|
37
|
}
|
|
38
|
}
|
|
39
|
if (action === "settings") {
|
|
40
|
report_settings(data);
|
|
41
|
policy_received_callback({url, allow: data[1].allow});
|
|
42
|
}
|
|
43
|
}
|
|
44
|
|
|
45
|
function document_loaded(event)
|
|
46
|
{
|
|
47
|
loaded = true;
|
|
48
|
|
|
49
|
for (let script_text of scripts_awaiting)
|
|
50
|
add_script(script_text);
|
|
51
|
|
|
52
|
scripts_awaiting = undefined;
|
|
53
|
}
|
|
54
|
|
|
55
|
function add_script(script_text)
|
|
56
|
{
|
|
57
|
if (!is_html)
|
|
58
|
return;
|
|
59
|
|
|
60
|
let script = document.createElement("script");
|
|
61
|
script.textContent = script_text;
|
|
62
|
script.setAttribute("nonce", nonce);
|
|
63
|
script._hachette_payload = true;
|
|
64
|
document.body.appendChild(script);
|
|
65
|
|
|
66
|
report_script(script_text);
|
|
67
|
}
|
|
68
|
|
|
69
|
function handle_page_actions(script_nonce, policy_received_cb) {
|
|
70
|
policy_received_callback = policy_received_cb;
|
|
71
|
url = document.URL;
|
|
72
|
is_html = /html/.test(document.contentType);
|
|
73
|
report_content_type(document.contentType);
|
|
74
|
|
|
75
|
document.addEventListener("DOMContentLoaded", document_loaded);
|
|
76
|
port = browser.runtime.connect({name : CONNECTION_TYPE.PAGE_ACTIONS});
|
|
77
|
port.onMessage.addListener(handle_message);
|
|
78
|
port.postMessage({url});
|
|
79
|
|
|
80
|
nonce = script_nonce;
|
|
81
|
}
|
|
82
|
|
|
83
|
/*
|
|
84
|
* EXPORTS_START
|
|
85
|
* EXPORT handle_page_actions
|
|
86
|
* EXPORTS_END
|
|
87
|
*/
|