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
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
/**
* SPDX-License-Identifier: LicenseRef-GPL-3.0-or-later-WITH-js-exceptions
*
* Make files on drive.google.com downloadable without nonfree js
*
* Copyright (C) 2021 Wojtek Kosior <koszko@koszko.org>
*
* This program 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.
*
* This program 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.
*
* As additional permission under GNU GPL version 3 section 7, you
* may distribute forms of that code without the copy of the GNU
* GPL normally required by section 4, provided you include this
* license notice and, in case of non-source distribution, a URL
* through which recipients can access the Corresponding Source.
* If you modify file(s) with this exception, you may extend this
* exception to your version of the file(s), but you are not
* obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*
* As a special exception to the GPL, any HTML file which merely
* makes function calls to this code, and for that purpose
* includes it by reference shall be deemed a separate work for
* copyright law purposes. If you modify this code, you may extend
* this exception to your version of the code, but you are not
* obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* I, Wojtek Kosior, thereby promise not to sue for violation of this file's
* license. Although I request that you do not make use of this code in a
* proprietary program, I am not going to enforce this in court.
*/
/* Use with: https://drive.google.com/file/d/** */
const og = {};
for (const node of document.head.childNodes) {
if (node.tagName === "STYLE") {
document.head.removeChild(node);
continue;
}
if (node.tagName !== "META")
continue;
const match = /^og:(.+)/.exec(node.getAttribute("property"));
if (!match)
continue;
og[match[1]] = node.getAttribute("content");
}
const match = new RegExp("/file/d/([^/]+)").exec(document.URL);
const file_id = match && match[1];
/* Extract file's mime type from script. */
let mime_type;
for (const script of document.scripts) {
const match = /itemJson\s*:\s*(\[.*\])\s*}\s*;$/.exec(script.textContent);
if (!match)
continue;
let data;
try {
data = JSON.parse(match[1]);
} catch(e) {
console.log(e);
continue;
}
if (/^[^\/]+\/[^\/]+$/.test(data[11]))
mime_type = data[11];
}
/* If file is folder, redirect to its page. */
const redirect = file_id &&
/^application\/vnd.google-apps.(folder|shortcut)$/.test(mime_type);
if (redirect)
window.location.href = `https://drive.google.com/drive/folders/${file_id}`;
const download_link =
file_id && `https://drive.google.com/uc?export=download&id=${file_id}`;
const body = document.createElement("body");
const name_div = document.createElement("div");
const download_div = document.createElement("div");
const download_button = document.createElement("a");
const type_div = document.createElement("div");
const type_span = document.createElement("span");
const show_image_div = document.createElement("div");
const show_image_button = document.createElement("button");
const image = document.createElement("img");
let button_text = "download";
if (!og.title)
button_text += " file";
else
name_div.textContent = og.title;
name_div.setAttribute("style", "font-weight: bold; display:inline-block;");
if (download_link)
download_button.setAttribute("href", download_link);
else
button_text += " (unavailable)";
download_button.textContent = button_text;
download_button.setAttribute("style", "border-radius: 5px; padding: 10px; color: black; background-color: lightgreen; text-decoration: none; box-shadow: -4px 8px 8px #888;");
download_div.appendChild(download_button);
download_div.setAttribute("style", "padding: 10px; display: inline-block; margin: 0 0 10px;");
type_span.textContent = "type: ";
type_span.setAttribute("style", "font-weight: bold; display:inline-block; white-space: pre;");
type_div.setAttribute("style", "margin: 0 0 10px;");
type_div.appendChild(type_span);
if (mime_type || og.type)
type_div.append(mime_type || og.type);
function show_image()
{
const image = document.createElement("img");
image.setAttribute("src", og.image);
image.setAttribute("width", og["image:width"]);
image.setAttribute("height", og["image:height"]);
image.setAttribute("style", "border: 1px solid #eee;");
document.body.replaceChild(image, show_image_div);
}
show_image_button.setAttribute("style", "border-radius: 5px; padding: 10px; color: black; background-color: lightgreen; box-shadow: -4px 8px 8px #888; font-family: inherit; font-size: inherit; border: none;");
show_image_button.textContent = "show image";
show_image_button.addEventListener("click", show_image);
show_image_div.appendChild(show_image_button);
body.setAttribute("style", "margin: 20px;");
if (og.title)
body.appendChild(name_div);
body.appendChild(download_div);
if (og.type)
body.appendChild(type_div);
if (og.image && og["image:width"] && og["image:height"])
body.appendChild(show_image_div);
if (!redirect)
document.documentElement.replaceChild(body, document.body);
|
