1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
/**
* GNU LibreJS - A browser add-on to block nonfree nontrivial JavaScript.
*
* Copyright (C) 2018 Giorgio Maone <giorgio@maone.net>
*
* This file is part of GNU LibreJS.
*
* GNU LibreJS is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GNU LibreJS is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU LibreJS. If not, see <http://www.gnu.org/licenses/>.
*/
/**
A tiny wrapper around extensions storage API, supporting CSV serialization for
retro-compatibility
*/
'use strict';
var Storage = {
ARRAY: {
async load(key, array = undefined) {
if (array === undefined) {
array = (await browser.storage.local.get(key))[key];
}
return array ? new Set(array) : new Set();
},
async save(key, list) {
return await browser.storage.local.set({ [key]: [...list] });
},
},
CSV: {
async load(key) {
let csv = (await browser.storage.local.get(key))[key];
return csv ? new Set(csv.split(/\s*,\s*/)) : new Set();
},
async save(key, list) {
return await browser.storage.local.set({ [key]: [...list].join(',') });
}
}
};
/**
A class to hold and persist blacklists and whitelists
*/
class ListStore {
constructor(key, storage = Storage.ARRAY) {
this.key = key;
this.storage = storage;
this.items = new Set();
browser.storage.onChanged.addListener(changes => {
if (!this.saving && this.key in changes) {
this.load(changes[this.key].newValue);
}
});
}
static inlineItem(url) {
// here we simplify and hash inline script references
return url.startsWith('inline:') ? url
: url.startsWith('view-source:')
&& url.replace(/^view-source:[\w-+]+:\/+([^/]+).*#line\d+/, 'inline://$1#')
.replace(/\n[^]*/, s => s.replace(/\s+/g, ' ').substring(0, 16) + '…' + hash(s.trim()));
}
static hashItem(hash) {
return hash.startsWith('(') ? hash : `(${hash})`;
}
static urlItem(url) {
let queryPos = url.indexOf('?');
return queryPos === -1 ? url : url.substring(0, queryPos);
}
static siteItem(url) {
if (url.endsWith('/*')) return url;
try {
return `${new URL(url).origin}/*`;
} catch (e) {
return `${url}/*`;
}
}
async save() {
this._saving = true;
try {
return await this.storage.save(this.key, this.items);
} finally {
this._saving = false;
}
}
async load(values = undefined) {
try {
this.items = await this.storage.load(this.key, values);
} catch (e) {
console.error(e);
}
return this.items;
}
async store(...items) {
let size = this.items.size;
let changed = false;
for (let item of items) {
if (size !== this.items.add(item).size) {
changed = true;
}
}
return changed && await this.save();
}
async remove(...items) {
let changed = false;
for (let item of items) {
if (this.items.delete(item)) {
changed = true;
}
}
return changed && await this.save();
}
contains(item) {
return this.items.has(item);
}
}
function hash(source) {
var shaObj = new jssha('SHA-256', 'TEXT')
shaObj.update(source);
return shaObj.getHash('HEX');
}
if (typeof module === 'object') {
module.exports = { ListStore, Storage, hash };
var jssha = require('jssha');
}
|
