BackupValidator.php — WP STAGING – WordPress Backup, Restore, Migration & Clone 3.7.1

wp-staging / Backup / BackupValidator.php

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BackupValidator.php

261 lines

1	<?php
2
3	namespace WPStaging\Backup;
4
5	use WPStaging\Framework\Filesystem\FileObject;
6	use WPStaging\Backup\Entity\BackupMetadata;
7	use WPStaging\Backup\Exceptions\BackupRuntimeException;
8	use WPStaging\Backup\Service\BackupsFinder;
9	use WPStaging\Framework\Utils\Strings;
10	use WPStaging\Backup\Task\Tasks\JobRestore\RestoreRequirementsCheckTask;
11
12	use function WPStaging\functions\debug_log;
13
14	class BackupValidator
15	{
16	/** @var BackupsFinder */
17	private $backupsFinder;
18
19	/** @var array */
20	protected $missingPartIssues = [];
21
22	/** @var array */
23	protected $partSizeIssues = [];
24
25	/** @var string */
26	protected $backupDir;
27
28	/** @var array */
29	protected $existingParts = [];
30
31	/** @var string */
32	protected $error = '';
33
34	/** @var string[] */
35	private $lineBreaks;
36
37	/** @var Strings */
38	private $strings;
39
40	public function __construct(BackupsFinder $backupsFinder, Strings $strings)
41	{
42	$this->partSizeIssues = [];
43	$this->missingPartIssues = [];
44	$this->backupsFinder = $backupsFinder;
45	$this->backupDir = '';
46	$this->strings = $strings;
47
48	$this->lineBreaks = [
49	"\r",
50	"\n",
51	"\r\n",
52	"\n\r",
53	PHP_EOL
54	];
55	}
56
57	/** @return array */
58	public function getMissingPartIssues()
59	{
60	return $this->missingPartIssues;
61	}
62
63	/** @return array */
64	public function getPartSizeIssues()
65	{
66	return $this->partSizeIssues;
67	}
68
69	/** @return string */
70	public function getErrorMessage()
71	{
72	return $this->error;
73	}
74
75	/**
76	* @param FileObject $file
77	* @param BackupMetadata $metadata
78	* @return bool
79	*/
80	public function validateFileIndex(FileObject $file, BackupMetadata $metadata)
81	{
82	// Early bail if not wpstg file
83	if ($file->getExtension() !== 'wpstg') {
84	return true;
85	}
86
87	$start = $metadata->getHeaderStart();
88	$end = $metadata->getHeaderEnd();
89	if ($end - $start < 4) {
90	$error = sprintf(esc_html('File Index of %s not found!'), $file->getFilename());
91	debug_log($error);
92	$this->error = $error;
93
94	return false;
95	}
96
97	if (!$this->validateFileIndexFirstLine($file, $metadata)) {
98	return false;
99	}
100
101	$file->fseek($start);
102	$count = 0;
103	while ($file->valid() && $file->ftell() < $end) {
104	$line = $file->readAndMoveNext();
105	if (empty($line) \|\| in_array($line, $this->lineBreaks)) {
106	continue;
107	}
108
109	$count++;
110	}
111
112	$totalFiles = $metadata->getTotalFiles();
113	if ($count !== $totalFiles && !$metadata->getIsMultipartBackup()) {
114	$error = sprintf(esc_html('File Index of %s is invalid! Actual number of files in the backup index: %s. Expected number of files: %s'), $file->getFilename(), $count, $totalFiles);
115	$this->error = $error;
116	debug_log($error);
117
118	return false;
119	}
120
121	if (!$metadata->getIsMultipartBackup()) {
122	return true;
123	}
124
125	$totalFiles = $metadata->getMultipartMetadata()->getTotalFiles();
126	if ($count !== $totalFiles && $metadata->getIsMultipartBackup()) {
127	$error = sprintf(esc_html('File Index of %s multipart backup is invalid! Actual number of files in the backup index: %s. Expected number of files: %s'), $file->getFilename(), $count, $totalFiles);
128	$this->error = $error;
129	debug_log($error);
130
131	return false;
132	}
133
134	return true;
135	}
136
137	/**
138	* @param FileObject $file
139	* @param BackupMetadata $metadata
140	* @return bool
141	*/
142	public function validateFileIndexFirstLine(FileObject $file, BackupMetadata $metadata): bool
143	{
144	$version = $metadata->getBackupVersion();
145	if (version_compare($version, BackupHeader::MIN_BACKUP_VERSION, '>=')) {
146	return true;
147	}
148
149	$start = $metadata->getHeaderStart();
150	$file->fseek($start - 1);
151
152	if (!$file->valid()) {
153	return true;
154	}
155
156	$line = $file->readAndMoveNext();
157	if (in_array($line, $this->lineBreaks)) {
158	$line = $file->readAndMoveNext(); // first line is break line, that's fine, move to next then!
159	}
160
161	if (!$this->strings->startsWith($line, 'wpstg_')) {
162	$error = sprintf(esc_html('File Index of %s is invalid! The file index first line does not begin with `wpstg_`. The current first line is: %s'), $file->getFilename(), $line);
163	$this->error = $error;
164	debug_log($error);
165
166	return false;
167	}
168
169	return true;
170	}
171
172	/**
173	* @return bool
174	* @throws BackupRuntimeException
175	*/
176	public function checkIfSplitBackupIsValid(BackupMetadata $metadata): bool
177	{
178	$this->partSizeIssues = [];
179	$this->missingPartIssues = [];
180
181	// Early bail if not split backup
182	if (!$metadata->getIsMultipartBackup()) {
183	return true;
184	}
185
186	$this->backupDir = wp_normalize_path($this->backupsFinder->getBackupsDirectory());
187
188	$splitMetadata = $metadata->getMultipartMetadata();
189
190	foreach ($splitMetadata->getPluginsParts() as $part) {
191	$this->validatePart($part, 'plugins');
192	}
193
194	foreach ($splitMetadata->getThemesParts() as $part) {
195	$this->validatePart($part, 'themes');
196	}
197
198	foreach ($splitMetadata->getUploadsParts() as $part) {
199	$this->validatePart($part, 'uploads');
200	}
201
202	foreach ($splitMetadata->getMuPluginsParts() as $part) {
203	$this->validatePart($part, 'muplugins');
204	}
205
206	foreach ($splitMetadata->getOthersParts() as $part) {
207	$this->validatePart($part, 'others');
208	}
209
210	foreach ($splitMetadata->getDatabaseParts() as $part) {
211	$this->validatePart($part, 'database');
212	}
213
214	return empty($this->partSizeIssues) && empty($this->missingPartIssues);
215	}
216
217	/**
218	* @param BackupMetadata $metadata
219	* @return bool
220	*/
221	public function isUnsupportedBackupVersion(BackupMetadata $metadata): bool
222	{
223	$isCreatedOnPro = $metadata->getCreatedOnPro();
224	$version = $metadata->getWpstgVersion();
225	if (!$isCreatedOnPro) {
226	return false;
227	}
228
229	return version_compare($version, RestoreRequirementsCheckTask::BETA_VERSION_LIMIT_PRO, '<');
230	}
231
232	/**
233	* @param string $part contains part name
234	* @param string $type (plugins\|themes\|uploads\|muplugins\|others\|database)
235	*
236	* @return void
237	*/
238	private function validatePart(string $part, string $type)
239	{
240	$path = $this->backupDir . str_replace($this->backupDir, '', wp_normalize_path(untrailingslashit($part)));
241	if (!file_exists($path)) {
242	$this->missingPartIssues[] = [
243	'name' => $part,
244	'type' => $type
245	];
246
247	return;
248	}
249
250	$metadata = new BackupMetadata();
251	$metadata = $metadata->hydrateByFilePath($path);
252
253	if (filesize($path) !== $metadata->getMultipartMetadata()->getPartSize()) {
254	$this->partSizeIssues[] = $part;
255	return;
256	}
257
258	$this->existingParts[] = $part;
259	}
260	}
261