WebSVN – oidplus – Diff – /trunk/polyfill.min.js.php


<?php
 
/*
 * OIDplus 2.0
 * Copyright 2019 - 2021 Daniel Marschall, ViaThinkSoft
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
// We do this stuff to avoid that the client includes an external JavaScript from polyfill.io,
// since some users might have a problem with that (in regards privacy of their IP address etc.)
// So, the OIDplus webserver will act as proxy.
 
// see https://polyfill.io/v3/url-builder/
const REQUIRED_POLYFILLS = array(
        // Internet Explorer for various AJAX calls
        'fetch',
        'URL',
 
        // Internet Explorer for OIDplusPagePublicWhois.js, OIDplusPageAdminSoftwareUpdate.js, and OIDplusPageAdminColors.js
        'String.prototype.includes',
 
        // Internet Explorer for TinyMCE if it is included inside oidplus.min.js.php ( https://github.com/tinymce/tinymce/blob/5c1702a119e683f93e03ecc2231f11d17ce57395/modules/tinymce/src/core/main/ts/api/EditorManager.ts#L271 )
        'document.currentScript'
);
 
const MINIFY_POLYFILL = true; // TODO: put into baseconfig?
 
const POLYFILL_CACHE_MAX_AGE = 24 * 60 * 60; // 1 day, TODO: put into baseconfig?
 
# ---
 
require_once __DIR__ . '/includes/functions.inc.php';
 
error_reporting(0);
 
if (!isset($_SERVER['HTTP_USER_AGENT'])) {
        $out = '/* ERROR: No User Agent available */';
        httpOutWithETag($out, 'application/javascript', 'polyfill'.(MINIFY_POLYFILL ? '.min' : '').'.js');
}
 
$ua = $_SERVER['HTTP_USER_AGENT'];
 
if (MINIFY_POLYFILL) {
        $cache_file = __DIR__ . '/userdata/cache/js_polyfill_'.md5(implode(',',REQUIRED_POLYFILLS)).'_'.md5($ua).'.min.js';
} else {
        $cache_file = __DIR__ . '/userdata/cache/js_polyfill_'.md5(implode(',',REQUIRED_POLYFILLS)).'_'.md5($ua).'.js';
}
 
if (!file_exists($cache_file) || (time()-filemtime($cache_file)) > POLYFILL_CACHE_MAX_AGE) {
 
        if (MINIFY_POLYFILL) {
                $url = 'https://polyfill.io/v3/polyfill.min.js?features='.urlencode(implode(',',REQUIRED_POLYFILLS));
        } else {
                $url = 'https://polyfill.io/v3/polyfill.js?features='.urlencode(implode(',',REQUIRED_POLYFILLS));
        }
 
        $cont = url_get_contents($url, $ua);
 
        if ($cont === false) {
 
                if (file_exists($cache_file)) {
                        $out = file_get_contents($cache_file);
 
                        // In case polyfill.io is down, don't delay further requests
                        // Instead, try again after the next max cache age
                        touch($cache_file);
                } else {
                        $out = '/* ERROR: polyfill.io ('.$url.') not available and no cache file exists! */';
                        httpOutWithETag($out, 'application/javascript', 'polyfill'.(MINIFY_POLYFILL ? '.min' : '').'.js');
                }
 
        } else {
 
                $ua = str_replace('*/', '', $ua);
                $cont = '/* Polyfill '.$url.' for '.$ua.' */'.$cont;
 
                if (POLYFILL_CACHE_MAX_AGE > 0) {
                        @file_put_contents($cache_file, $cont);
                }
 
                $out = $cont;
        }
 
} else {
 
        $out = file_get_contents($cache_file);
 
}
 
# ---
 
if (!$out) $out = '';
httpOutWithETag($out, 'application/javascript', 'polyfill'.(MINIFY_POLYFILL ? '.min' : '').'.js');
 

Subversion Repositories oidplus

oidplus/trunk/polyfill.min.js.php – Rev 1116 → 1143

Rev 1116		Rev 1143
1	<?php	1	<?php
2		2
3	/*	3	/*
4	* OIDplus 2.0	4	* OIDplus 2.0
5	* Copyright 2019 - 2021 Daniel Marschall, ViaThinkSoft	5	* Copyright 2019 - 2021 Daniel Marschall, ViaThinkSoft
6	*	6	*
7	* Licensed under the Apache License, Version 2.0 (the "License");	7	* Licensed under the Apache License, Version 2.0 (the "License");
8	* you may not use this file except in compliance with the License.	8	* you may not use this file except in compliance with the License.
9	* You may obtain a copy of the License at	9	* You may obtain a copy of the License at
10	*	10	*
11	* http://www.apache.org/licenses/LICENSE-2.0	11	* http://www.apache.org/licenses/LICENSE-2.0
12	*	12	*
13	* Unless required by applicable law or agreed to in writing, software	13	* Unless required by applicable law or agreed to in writing, software
14	* distributed under the License is distributed on an "AS IS" BASIS,	14	* distributed under the License is distributed on an "AS IS" BASIS,
15	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.	15	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16	* See the License for the specific language governing permissions and	16	* See the License for the specific language governing permissions and
17	* limitations under the License.	17	* limitations under the License.
18	*/	18	*/
19		19
20	// We do this stuff to avoid that the client includes an external JavaScript from polyfill.io,	20	// We do this stuff to avoid that the client includes an external JavaScript from polyfill.io,
21	// since some users might have a problem with that (in regards privacy of their IP address etc.)	21	// since some users might have a problem with that (in regards privacy of their IP address etc.)
22	// So, the OIDplus webserver will act as proxy.	22	// So, the OIDplus webserver will act as proxy.
23		23
24	// see https://polyfill.io/v3/url-builder/	24	// see https://polyfill.io/v3/url-builder/
25	const REQUIRED_POLYFILLS = array(	25	const REQUIRED_POLYFILLS = array(
26	// Internet Explorer for various AJAX calls	26	// Internet Explorer for various AJAX calls
27	'fetch',	27	'fetch',
28	'URL',	28	'URL',
29		29
30	// Internet Explorer for OIDplusPagePublicWhois.js, OIDplusPageAdminSoftwareUpdate.js, and OIDplusPageAdminColors.js	30	// Internet Explorer for OIDplusPagePublicWhois.js, OIDplusPageAdminSoftwareUpdate.js, and OIDplusPageAdminColors.js
31	'String.prototype.includes',	31	'String.prototype.includes',
32		32
33	// Internet Explorer for TinyMCE if it is included inside oidplus.min.js.php ( https://github.com/tinymce/tinymce/blob/5c1702a119e683f93e03ecc2231f11d17ce57395/modules/tinymce/src/core/main/ts/api/EditorManager.ts#L271 )	33	// Internet Explorer for TinyMCE if it is included inside oidplus.min.js.php ( https://github.com/tinymce/tinymce/blob/5c1702a119e683f93e03ecc2231f11d17ce57395/modules/tinymce/src/core/main/ts/api/EditorManager.ts#L271 )
34	'document.currentScript'	34	'document.currentScript'
35	);	35	);
36		36
37	const MINIFY_POLYFILL = true; // TODO: put into baseconfig?	37	const MINIFY_POLYFILL = true; // TODO: put into baseconfig?
38		38
39	const POLYFILL_CACHE_MAX_AGE = 24 * 60 * 60; // 1 day, TODO: put into baseconfig?	39	const POLYFILL_CACHE_MAX_AGE = 24 * 60 * 60; // 1 day, TODO: put into baseconfig?
40		40
41	# ---	41	# ---
42		42
43	require_once __DIR__ . '/includes/functions.inc.php';	43	require_once __DIR__ . '/includes/functions.inc.php';
44		44
45	error_reporting(0);	45	error_reporting(0);
46		46
47	if (!isset($_SERVER['HTTP_USER_AGENT'])) {	47	if (!isset($_SERVER['HTTP_USER_AGENT'])) {
48	$out = '/* ERROR: No User Agent available */';	48	$out = '/* ERROR: No User Agent available */';
49	httpOutWithETag($out, 'application/javascript', 'polyfill'.(MINIFY_POLYFILL ? '.min' : '').'.js');	49	httpOutWithETag($out, 'application/javascript', 'polyfill'.(MINIFY_POLYFILL ? '.min' : '').'.js');
50	}	50	}
51		51
52	$ua = $_SERVER['HTTP_USER_AGENT'];	52	$ua = $_SERVER['HTTP_USER_AGENT'];
53		53
54	if (MINIFY_POLYFILL) {	54	if (MINIFY_POLYFILL) {
55	$cache_file = __DIR__ . '/userdata/cache/js_polyfill_'.md5(implode(',',REQUIRED_POLYFILLS)).'_'.md5($ua).'.min.js';	55	$cache_file = __DIR__ . '/userdata/cache/js_polyfill_'.md5(implode(',',REQUIRED_POLYFILLS)).'_'.md5($ua).'.min.js';
56	} else {	56	} else {
57	$cache_file = __DIR__ . '/userdata/cache/js_polyfill_'.md5(implode(',',REQUIRED_POLYFILLS)).'_'.md5($ua).'.js';	57	$cache_file = __DIR__ . '/userdata/cache/js_polyfill_'.md5(implode(',',REQUIRED_POLYFILLS)).'_'.md5($ua).'.js';
58	}	58	}
59		59
60	if (!file_exists($cache_file) \|\| (time()-filemtime($cache_file)) > POLYFILL_CACHE_MAX_AGE) {	60	if (!file_exists($cache_file) \|\| (time()-filemtime($cache_file)) > POLYFILL_CACHE_MAX_AGE) {
61		61
62	if (MINIFY_POLYFILL) {	62	if (MINIFY_POLYFILL) {
63	$url = 'https://polyfill.io/v3/polyfill.min.js?features='.urlencode(implode(',',REQUIRED_POLYFILLS));	63	$url = 'https://polyfill.io/v3/polyfill.min.js?features='.urlencode(implode(',',REQUIRED_POLYFILLS));
64	} else {	64	} else {
65	$url = 'https://polyfill.io/v3/polyfill.js?features='.urlencode(implode(',',REQUIRED_POLYFILLS));	65	$url = 'https://polyfill.io/v3/polyfill.js?features='.urlencode(implode(',',REQUIRED_POLYFILLS));
66	}	66	}
67		67
68	$cont = url_get_contents($url, $ua);	68	$cont = url_get_contents($url, $ua);
69		69
70	if ($cont === false) {	70	if ($cont === false) {
71		71
72	if (file_exists($cache_file)) {	72	if (file_exists($cache_file)) {
73	$out = file_get_contents($cache_file);	73	$out = file_get_contents($cache_file);
74		74
75	// In case polyfill.io is down, don't delay further requests	75	// In case polyfill.io is down, don't delay further requests
76	// Instead, try again after the next max cache age	76	// Instead, try again after the next max cache age
77	touch($cache_file);	77	touch($cache_file);
78	} else {	78	} else {
79	$out = '/* ERROR: polyfill.io ('.$url.') not available and no cache file exists! */';	79	$out = '/* ERROR: polyfill.io ('.$url.') not available and no cache file exists! */';
80	httpOutWithETag($out, 'application/javascript', 'polyfill'.(MINIFY_POLYFILL ? '.min' : '').'.js');	80	httpOutWithETag($out, 'application/javascript', 'polyfill'.(MINIFY_POLYFILL ? '.min' : '').'.js');
81	}	81	}
82		82
83	} else {	83	} else {
84		84
85	$ua = str_replace('*/', '', $ua);	85	$ua = str_replace('*/', '', $ua);
86	$cont = '/* Polyfill '.$url.' for '.$ua.' */'.$cont;	86	$cont = '/* Polyfill '.$url.' for '.$ua.' */'.$cont;
87		87
88	if (POLYFILL_CACHE_MAX_AGE > 0) {	88	if (POLYFILL_CACHE_MAX_AGE > 0) {
89	@file_put_contents($cache_file, $cont);	89	@file_put_contents($cache_file, $cont);
90	}	90	}
91		91
92	$out = $cont;	92	$out = $cont;
93	}	93	}
94		94
95	} else {	95	} else {
96		96
97	$out = file_get_contents($cache_file);	97	$out = file_get_contents($cache_file);
98		98
99	}	99	}
100		100
101	# ---	101	# ---
102		102
-		103	if (!$out) $out = '';
103	httpOutWithETag($out, 'application/javascript', 'polyfill'.(MINIFY_POLYFILL ? '.min' : '').'.js');	104	httpOutWithETag($out, 'application/javascript', 'polyfill'.(MINIFY_POLYFILL ? '.min' : '').'.js');
104		105