1
|
|
|
<?php |
2
|
|
|
|
3
|
|
|
/** |
4
|
|
|
* Platine Framework |
5
|
|
|
* |
6
|
|
|
* Platine Framework is a lightweight, high-performance, simple and elegant PHP |
7
|
|
|
* Web framework |
8
|
|
|
* |
9
|
|
|
* This content is released under the MIT License (MIT) |
10
|
|
|
* |
11
|
|
|
* Copyright (c) 2020 Platine Framework |
12
|
|
|
* Copyright (c) 2015 - 2023 Paragon Initiative Enterprises |
13
|
|
|
* |
14
|
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy |
15
|
|
|
* of this software and associated documentation files (the "Software"), to deal |
16
|
|
|
* in the Software without restriction, including without limitation the rights |
17
|
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
18
|
|
|
* copies of the Software, and to permit persons to whom the Software is |
19
|
|
|
* furnished to do so, subject to the following conditions: |
20
|
|
|
* |
21
|
|
|
* The above copyright notice and this permission notice shall be included in all |
22
|
|
|
* copies or substantial portions of the Software. |
23
|
|
|
* |
24
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
25
|
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
26
|
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
27
|
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
28
|
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
29
|
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
30
|
|
|
* SOFTWARE. |
31
|
|
|
*/ |
32
|
|
|
|
33
|
|
|
/** |
34
|
|
|
* @file ContentSecurityPolicy.php |
35
|
|
|
* |
36
|
|
|
* The Content Security Policy class |
37
|
|
|
* |
38
|
|
|
* @package Platine\Framework\Security\Policy |
39
|
|
|
* @author Platine Developers team |
40
|
|
|
* @copyright Copyright (c) 2020 |
41
|
|
|
* @license http://opensource.org/licenses/MIT MIT License |
42
|
|
|
* @link https://www.platine-php.com |
43
|
|
|
* @version 1.0.0 |
44
|
|
|
* @filesource |
45
|
|
|
*/ |
46
|
|
|
|
47
|
|
|
declare(strict_types=1); |
48
|
|
|
|
49
|
|
|
namespace Platine\Framework\Security\Policy; |
50
|
|
|
|
51
|
|
|
/** |
52
|
|
|
* @class ContentSecurityPolicy |
53
|
|
|
* @package Platine\Framework\Security\Policy |
54
|
|
|
*/ |
55
|
|
|
class ContentSecurityPolicy extends AbstractPolicy |
56
|
|
|
{ |
57
|
|
|
/** |
58
|
|
|
* Content Security Policy white list directives. |
59
|
|
|
* @var array<string, bool> |
60
|
|
|
*/ |
61
|
|
|
protected array $whitelist = [ |
62
|
|
|
'base-uri' => true, |
63
|
|
|
'child-src' => true, |
64
|
|
|
'connect-src' => true, |
65
|
|
|
'default-src' => true, |
66
|
|
|
'font-src' => true, |
67
|
|
|
'form-action' => true, |
68
|
|
|
'frame-ancestors' => true, |
69
|
|
|
'frame-src' => true, |
70
|
|
|
'img-src' => true, |
71
|
|
|
'manifest-src' => true, |
72
|
|
|
'media-src' => true, |
73
|
|
|
'navigate-to' => true, |
74
|
|
|
'object-src' => true, |
75
|
|
|
'prefetch-src' => true, |
76
|
|
|
'script-src' => true, |
77
|
|
|
'script-src-attr' => true, |
78
|
|
|
'script-src-elem' => true, |
79
|
|
|
'style-src' => true, |
80
|
|
|
'style-src-attr' => true, |
81
|
|
|
'style-src-elem' => true, |
82
|
|
|
'worker-src' => true, |
83
|
|
|
]; |
84
|
|
|
|
85
|
|
|
/** |
86
|
|
|
* {@inheritdoc} |
87
|
|
|
*/ |
88
|
|
|
public function headers(): string |
89
|
|
|
{ |
90
|
|
|
$headers = [ |
91
|
|
|
$this->directives(), |
92
|
|
|
$this->pluginTypes(), |
93
|
|
|
$this->sandbox(), |
94
|
|
|
$this->requireTrustedTypesFor(), |
95
|
|
|
$this->trustedTypes(), |
96
|
|
|
$this->blockAllMixedContent(), |
97
|
|
|
$this->upgradeInsecureRequests(), |
98
|
|
|
$this->reportTo(), |
99
|
|
|
$this->reportUri(), |
100
|
|
|
]; |
101
|
|
|
|
102
|
|
|
return $this->implode(array_filter($headers), '; '); |
103
|
|
|
} |
104
|
|
|
|
105
|
|
|
/** |
106
|
|
|
* Build directive |
107
|
|
|
* @param array<string, mixed> $config |
108
|
|
|
* @return string |
109
|
|
|
*/ |
110
|
|
|
public function directive(array $config): string |
111
|
|
|
{ |
112
|
|
|
if ($config['none'] ?? false) { |
113
|
|
|
return '\'none\''; |
114
|
|
|
} |
115
|
|
|
|
116
|
|
|
$sources = array_merge( |
117
|
|
|
$this->keywords($config), |
118
|
|
|
$this->schemes($config['schemes'] ?? []), |
119
|
|
|
$this->hashes($config['hashes'] ?? []), |
120
|
|
|
$this->nonces($config['nonces'] ?? []), |
121
|
|
|
$config['allow'] ?? [] |
122
|
|
|
); |
123
|
|
|
|
124
|
|
|
$filtered = array_filter($sources); |
125
|
|
|
|
126
|
|
|
return $this->implode($filtered); |
127
|
|
|
} |
128
|
|
|
|
129
|
|
|
/** |
130
|
|
|
* Build directive keywords. |
131
|
|
|
* @param array<string, mixed> $config |
132
|
|
|
* @return array<string> |
133
|
|
|
*/ |
134
|
|
|
public function keywords(array $config): array |
135
|
|
|
{ |
136
|
|
|
$whitelist = [ |
137
|
|
|
'self' => true, |
138
|
|
|
'unsafe-inline' => true, |
139
|
|
|
'unsafe-eval' => true, |
140
|
|
|
'unsafe-hashes' => true, |
141
|
|
|
'strict-dynamic' => true, |
142
|
|
|
'report-sample' => true, |
143
|
|
|
'unsafe-allow-redirects' => true, |
144
|
|
|
]; |
145
|
|
|
|
146
|
|
|
$filtered = $this->filter($config, $whitelist); |
147
|
|
|
|
148
|
|
|
return array_map(function (string $keyword) { |
149
|
|
|
return sprintf('\'%s\'', $keyword); |
150
|
|
|
}, $filtered); |
151
|
|
|
} |
152
|
|
|
|
153
|
|
|
/** |
154
|
|
|
* Build directive schemes |
155
|
|
|
* @param array<string, mixed> $schemes |
156
|
|
|
* @return array<string> |
157
|
|
|
*/ |
158
|
|
|
public function schemes(array $schemes): array |
159
|
|
|
{ |
160
|
|
|
return array_map(function (string $scheme) { |
161
|
|
|
$clean = trim($scheme); |
162
|
|
|
|
163
|
|
|
if (substr($clean, -1) === ':') { |
164
|
|
|
return $clean; |
165
|
|
|
} |
166
|
|
|
|
167
|
|
|
return sprintf('%s:', $clean); |
168
|
|
|
}, $schemes); |
169
|
|
|
} |
170
|
|
|
|
171
|
|
|
/** |
172
|
|
|
* Build directive nonce's. |
173
|
|
|
* @param array<string, mixed> $nonces |
174
|
|
|
* @return array<string> |
175
|
|
|
*/ |
176
|
|
|
public function nonces(array $nonces): array |
177
|
|
|
{ |
178
|
|
|
return array_map(function (string $nonce) { |
179
|
|
|
$clean = trim($nonce); |
180
|
|
|
|
181
|
|
|
if (base64_decode($clean, true) === false) { |
182
|
|
|
return ''; |
183
|
|
|
} |
184
|
|
|
|
185
|
|
|
return sprintf('\'nonce-%s\'', $clean); |
186
|
|
|
}, $nonces); |
187
|
|
|
} |
188
|
|
|
|
189
|
|
|
/** |
190
|
|
|
* Build directive hashes. |
191
|
|
|
* @param array<string, mixed> $groups |
192
|
|
|
* @return array<string> |
193
|
|
|
*/ |
194
|
|
|
public function hashes(array $groups): array |
195
|
|
|
{ |
196
|
|
|
$result = []; |
197
|
|
|
|
198
|
|
|
foreach ($groups as $hash => $items) { |
199
|
|
|
if (in_array($hash, ['sha256', 'sha384', 'sha512'], true) === false) { |
200
|
|
|
continue; |
201
|
|
|
} |
202
|
|
|
|
203
|
|
|
foreach ($items as $item) { |
204
|
|
|
$clean = trim($item); |
205
|
|
|
|
206
|
|
|
if (base64_decode($clean, true) === false) { |
207
|
|
|
continue; |
208
|
|
|
} |
209
|
|
|
|
210
|
|
|
$result[] = sprintf('\'%s-%s\'', $hash, $clean); |
211
|
|
|
} |
212
|
|
|
} |
213
|
|
|
|
214
|
|
|
return $result; |
215
|
|
|
} |
216
|
|
|
|
217
|
|
|
/** |
218
|
|
|
* Build plugin-types directive. |
219
|
|
|
* @return string |
220
|
|
|
*/ |
221
|
|
|
public function pluginTypes(): string |
222
|
|
|
{ |
223
|
|
|
$pluginTypes = $this->configurations['plugin-types'] ?? []; |
224
|
|
|
|
225
|
|
|
$filtered = array_filter($pluginTypes, function (mixed $mime): bool { |
226
|
|
|
return (bool) preg_match('/^[a-z\-]+\/[a-z\-]+$/i', $mime); |
227
|
|
|
}); |
228
|
|
|
|
229
|
|
|
if (count($filtered) > 0) { |
230
|
|
|
array_unshift($filtered, 'plugin-types'); |
231
|
|
|
} |
232
|
|
|
|
233
|
|
|
return $this->implode($filtered); |
234
|
|
|
} |
235
|
|
|
|
236
|
|
|
/** |
237
|
|
|
* Build sandbox directive. |
238
|
|
|
* @return string |
239
|
|
|
*/ |
240
|
|
|
public function sandbox(): string |
241
|
|
|
{ |
242
|
|
|
$sandbox = $this->configurations['sandbox'] ?? []; |
243
|
|
|
|
244
|
|
|
if (($sandbox['enable'] ?? false) === false) { |
245
|
|
|
return ''; |
246
|
|
|
} |
247
|
|
|
|
248
|
|
|
$whitelist = [ |
249
|
|
|
'allow-downloads-without-user-activation' => true, |
250
|
|
|
'allow-forms' => true, |
251
|
|
|
'allow-modals' => true, |
252
|
|
|
'allow-orientation-lock' => true, |
253
|
|
|
'allow-pointer-lock' => true, |
254
|
|
|
'allow-popups' => true, |
255
|
|
|
'allow-popups-to-escape-sandbox' => true, |
256
|
|
|
'allow-presentation' => true, |
257
|
|
|
'allow-same-origin' => true, |
258
|
|
|
'allow-scripts' => true, |
259
|
|
|
'allow-storage-access-by-user-activation' => true, |
260
|
|
|
'allow-top-navigation' => true, |
261
|
|
|
'allow-top-navigation-by-user-activation' => true, |
262
|
|
|
]; |
263
|
|
|
|
264
|
|
|
$filtered = $this->filter($sandbox, $whitelist); |
265
|
|
|
|
266
|
|
|
array_unshift($filtered, 'sandbox'); |
267
|
|
|
|
268
|
|
|
return $this->implode($filtered); |
269
|
|
|
} |
270
|
|
|
|
271
|
|
|
/** |
272
|
|
|
* Build require-trusted-types-for directive. |
273
|
|
|
* @return string |
274
|
|
|
*/ |
275
|
|
|
public function requireTrustedTypesFor(): string |
276
|
|
|
{ |
277
|
|
|
$config = $this->configurations['require-trusted-types-for'] ?? []; |
278
|
|
|
|
279
|
|
|
if (($config['script'] ?? false) === false) { |
280
|
|
|
return ''; |
281
|
|
|
} |
282
|
|
|
|
283
|
|
|
return "require-trusted-types-for 'script'"; |
284
|
|
|
} |
285
|
|
|
|
286
|
|
|
/** |
287
|
|
|
* Build trusted-types directive. |
288
|
|
|
* @return string |
289
|
|
|
*/ |
290
|
|
|
public function trustedTypes(): string |
291
|
|
|
{ |
292
|
|
|
$trustedTypes = $this->configurations['trusted-types'] ?? []; |
293
|
|
|
|
294
|
|
|
if (($trustedTypes['enable'] ?? false) === false) { |
295
|
|
|
return ''; |
296
|
|
|
} |
297
|
|
|
|
298
|
|
|
$policies = array_map('trim', $trustedTypes['policies'] ?? []); |
299
|
|
|
|
300
|
|
|
if ($trustedTypes['default'] ?? false) { |
301
|
|
|
$policies[] = 'default'; |
302
|
|
|
} |
303
|
|
|
|
304
|
|
|
if ($trustedTypes['allow-duplicates'] ?? false) { |
305
|
|
|
$policies[] = '\'allow-duplicates\''; |
306
|
|
|
} |
307
|
|
|
|
308
|
|
|
array_unshift($policies, 'trusted-types'); |
309
|
|
|
|
310
|
|
|
return $this->implode($policies); |
311
|
|
|
} |
312
|
|
|
|
313
|
|
|
/** |
314
|
|
|
* Build block-all-mixed-content directive. |
315
|
|
|
* @return string |
316
|
|
|
*/ |
317
|
|
|
public function blockAllMixedContent(): string |
318
|
|
|
{ |
319
|
|
|
if (($this->configurations['block-all-mixed-content'] ?? false) === false) { |
320
|
|
|
return ''; |
321
|
|
|
} |
322
|
|
|
|
323
|
|
|
return 'block-all-mixed-content'; |
324
|
|
|
} |
325
|
|
|
|
326
|
|
|
/** |
327
|
|
|
* Build upgrade-insecure-requests directive. |
328
|
|
|
* @return string |
329
|
|
|
*/ |
330
|
|
|
public function upgradeInsecureRequests(): string |
331
|
|
|
{ |
332
|
|
|
if (($this->configurations['upgrade-insecure-requests'] ?? false) === false) { |
333
|
|
|
return ''; |
334
|
|
|
} |
335
|
|
|
|
336
|
|
|
return 'upgrade-insecure-requests'; |
337
|
|
|
} |
338
|
|
|
|
339
|
|
|
/** |
340
|
|
|
* Build report-to directive. |
341
|
|
|
* @return string |
342
|
|
|
*/ |
343
|
|
|
public function reportTo(): string |
344
|
|
|
{ |
345
|
|
|
if (empty($this->configurations['report-to'])) { |
346
|
|
|
return ''; |
347
|
|
|
} |
348
|
|
|
|
349
|
|
|
return sprintf('report-to %s', $this->configurations['report-to']); |
350
|
|
|
} |
351
|
|
|
|
352
|
|
|
/** |
353
|
|
|
* Build report-uri directive. |
354
|
|
|
* @return string |
355
|
|
|
*/ |
356
|
|
|
public function reportUri(): string |
357
|
|
|
{ |
358
|
|
|
if (empty($this->configurations['report-uri'])) { |
359
|
|
|
return ''; |
360
|
|
|
} |
361
|
|
|
|
362
|
|
|
$uri = $this->implode($this->configurations['report-uri']); |
363
|
|
|
|
364
|
|
|
return sprintf('report-uri %s', $uri); |
365
|
|
|
} |
366
|
|
|
|
367
|
|
|
/** |
368
|
|
|
* Using key to filter configuration and return keys. |
369
|
|
|
* @param array<string, mixed> $config |
370
|
|
|
* @param array<string, mixed> $available |
371
|
|
|
* @return array<string> |
372
|
|
|
*/ |
373
|
|
|
public function filter(array $config, array $available): array |
374
|
|
|
{ |
375
|
|
|
$targets = array_intersect_key($config, $available); |
376
|
|
|
|
377
|
|
|
$needs = array_filter($targets); |
378
|
|
|
|
379
|
|
|
return array_keys($needs); |
380
|
|
|
} |
381
|
|
|
|
382
|
|
|
/** |
383
|
|
|
* Implode strings using glue |
384
|
|
|
* @param array<mixed> $payload |
385
|
|
|
* @param string $glue |
386
|
|
|
* @return string |
387
|
|
|
*/ |
388
|
|
|
public function implode(array $payload, string $glue = ' '): string |
389
|
|
|
{ |
390
|
|
|
return implode($glue, $payload); |
391
|
|
|
} |
392
|
|
|
|
393
|
|
|
/** |
394
|
|
|
* Build the directives |
395
|
|
|
* @return string |
396
|
|
|
*/ |
397
|
|
|
protected function directives(): string |
398
|
|
|
{ |
399
|
|
|
$result = []; |
400
|
|
|
foreach ($this->configurations as $name => $config) { |
401
|
|
|
if (($this->whitelist[$name] ?? false) === false) { |
402
|
|
|
continue; |
403
|
|
|
} |
404
|
|
|
|
405
|
|
|
$value = $this->directive($config); |
406
|
|
|
|
407
|
|
|
if (empty($value)) { |
408
|
|
|
continue; |
409
|
|
|
} |
410
|
|
|
|
411
|
|
|
$result[] = sprintf('%s %s', $name, $value); |
412
|
|
|
} |
413
|
|
|
|
414
|
|
|
return $this->implode($result, '; '); |
415
|
|
|
} |
416
|
|
|
} |
417
|
|
|
|