aboutsummaryrefslogtreecommitdiffstats
path: root/tests/lib/Files/FilenameValidatorTest.php
blob: 42705a23f025540c1f8f6558f2021ec2339b173c (plain)
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
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
<?php

declare(strict_types=1);

/*!
 * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
 * SPDX-License-Identifier: AGPL-3.0-or-later
 */

namespace Test\Files;

use OC\Files\FilenameValidator;
use OCP\Files\EmptyFileNameException;
use OCP\Files\FileNameTooLongException;
use OCP\Files\InvalidCharacterInPathException;
use OCP\Files\InvalidPathException;
use OCP\Files\ReservedWordException;
use OCP\IConfig;
use OCP\IL10N;
use OCP\L10N\IFactory;
use PHPUnit\Framework\MockObject\MockObject;
use Psr\Log\LoggerInterface;
use Test\TestCase;

class FilenameValidatorTest extends TestCase {

	protected IFactory&MockObject $l10n;
	protected IConfig&MockObject $config;
	protected LoggerInterface&MockObject $logger;

	protected function setUp(): void {
		parent::setUp();
		$l10n = $this->createMock(IL10N::class);
		$l10n->method('t')
			->willReturnCallback(fn ($string, $params) => sprintf($string, ...$params));
		$this->l10n = $this->createMock(IFactory::class);
		$this->l10n
			->method('get')
			->with('core')
			->willReturn($l10n);

		$this->config = $this->createMock(IConfig::class);
		$this->logger = $this->createMock(LoggerInterface::class);
	}

	/**
	 * @dataProvider dataValidateFilename
	 */
	public function testValidateFilename(
		string $filename,
		array $forbiddenNames,
		array $forbiddenBasenames,
		array $forbiddenExtensions,
		array $forbiddenCharacters,
		?string $exception,
	): void {
		/** @var FilenameValidator&MockObject */
		$validator = $this->getMockBuilder(FilenameValidator::class)
			->onlyMethods([
				'getForbiddenBasenames',
				'getForbiddenCharacters',
				'getForbiddenExtensions',
				'getForbiddenFilenames',
			])
			->setConstructorArgs([$this->l10n, $this->config, $this->logger])
			->getMock();

		$validator->method('getForbiddenBasenames')
			->willReturn($forbiddenBasenames);
		$validator->method('getForbiddenCharacters')
			->willReturn($forbiddenCharacters);
		$validator->method('getForbiddenExtensions')
			->willReturn($forbiddenExtensions);
		$validator->method('getForbiddenFilenames')
			->willReturn($forbiddenNames);

		if ($exception !== null) {
			$this->expectException($exception);
		} else {
			$this->expectNotToPerformAssertions();
		}
		$validator->validateFilename($filename);
	}

	/**
	 * @dataProvider dataValidateFilename
	 */
	public function testIsFilenameValid(
		string $filename,
		array $forbiddenNames,
		array $forbiddenBasenames,
		array $forbiddenExtensions,
		array $forbiddenCharacters,
		?string $exception,
	): void {
		/** @var FilenameValidator&MockObject */
		$validator = $this->getMockBuilder(FilenameValidator::class)
			->onlyMethods([
				'getForbiddenBasenames',
				'getForbiddenExtensions',
				'getForbiddenFilenames',
				'getForbiddenCharacters',
			])
			->setConstructorArgs([$this->l10n, $this->config, $this->logger])
			->getMock();

		$validator->method('getForbiddenBasenames')
			->willReturn($forbiddenBasenames);
		$validator->method('getForbiddenCharacters')
			->willReturn($forbiddenCharacters);
		$validator->method('getForbiddenExtensions')
			->willReturn($forbiddenExtensions);
		$validator->method('getForbiddenFilenames')
			->willReturn($forbiddenNames);


		$this->assertEquals($exception === null, $validator->isFilenameValid($filename));
	}

	public function dataValidateFilename(): array {
		return [
			'valid name' => [
				'a: b.txt', ['.htaccess'], [], [], [], null
			],
			'valid name with some more parameters' => [
				'a: b.txt', ['.htaccess'], [], ['exe'], ['~'], null
			],
			'valid name checks only the full name' => [
				'.htaccess.sample', ['.htaccess'], [], [], [], null
			],
			'forbidden name' => [
				'.htaccess', ['.htaccess'], [], [], [], ReservedWordException::class
			],
			'forbidden name - name is case insensitive' => [
				'COM1', ['.htaccess', 'com1'], [], [], [], ReservedWordException::class
			],
			'forbidden basename' => [
				// needed for Windows namespaces
				'com1.suffix', ['.htaccess'], ['com1'], [], [], ReservedWordException::class
			],
			'forbidden basename for hidden files' => [
				// needed for Windows namespaces
				'.thumbs.db', ['.htaccess'], ['.thumbs'], [], [], ReservedWordException::class
			],
			'invalid character' => [
				'a: b.txt', ['.htaccess'], [], [], [':'], InvalidCharacterInPathException::class
			],
			'invalid path' => [
				'../../foo.bar', ['.htaccess'], [], [], ['/', '\\'], InvalidCharacterInPathException::class,
			],
			'invalid extension' => [
				'a: b.txt', ['.htaccess'], [], ['.txt'], [], InvalidPathException::class
			],
			'empty filename' => [
				'', [], [], [], [], EmptyFileNameException::class
			],
			'reserved unix name "."' => [
				'.', [], [], [], [], InvalidPathException::class
			],
			'reserved unix name ".."' => [
				'..', [], [], [], [], ReservedWordException::class
			],
			'too long filename "."' => [
				str_repeat('a', 251), [], [], [], [], FileNameTooLongException::class
			],
			// make sure to not split the list entries as they migh contain Unicode sequences
			// in this example the "face in clouds" emoji contains the clouds emoji so only having clouds is ok
			['🌫️.txt', ['.htaccess'], [], [], ['😶‍🌫️'], null],
			// This is the reverse: clouds are forbidden -> so is also the face in the clouds emoji
			['😶‍🌫️.txt', ['.htaccess'], [], [], ['🌫️'], InvalidCharacterInPathException::class],
		];
	}

	/**
	 * @dataProvider dataIsForbidden
	 */
	public function testIsForbidden(string $filename, array $forbiddenNames, array $forbiddenBasenames, bool $expected): void {
		/** @var FilenameValidator&MockObject */
		$validator = $this->getMockBuilder(FilenameValidator::class)
			->onlyMethods(['getForbiddenFilenames', 'getForbiddenBasenames'])
			->setConstructorArgs([$this->l10n, $this->config, $this->logger])
			->getMock();

		$validator->method('getForbiddenBasenames')
			->willReturn($forbiddenBasenames);
		$validator->method('getForbiddenFilenames')
			->willReturn($forbiddenNames);

		$this->assertEquals($expected, $validator->isForbidden($filename));
	}

	public function dataIsForbidden(): array {
		return [
			'valid name' => [
				'a: b.txt', ['.htaccess'], [], false
			],
			'valid name with some more parameters' => [
				'a: b.txt', ['.htaccess'], [], false
			],
			'valid name as only full forbidden should be matched' => [
				'.htaccess.sample', ['.htaccess'], [], false,
			],
			'forbidden name' => [
				'.htaccess', ['.htaccess'], [], true
			],
			'forbidden name - name is case insensitive' => [
				'COM1', ['.htaccess', 'com1'], [], true,
			],
			'forbidden name - basename is checked' => [
				// needed for Windows namespaces
				'com1.suffix', ['.htaccess'], ['com1'], true
			],
			'forbidden name - basename is checked also with multiple extensions' => [
				// needed for Windows namespaces
				'com1.tar.gz', ['.htaccess'], ['com1'], true
			],
		];
	}
}