Delete.php — WP STAGING – WordPress Backup, Restore, Migration & Clone 3.3.1

wp-staging / Backup / Ajax / Delete.php

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Delete.php

152 lines

1	<?php
2
3	// TODO PHP7.x; declare(strict_type=1);
4	// TODO PHP7.x; type hints & return types
5
6	namespace WPStaging\Backup\Ajax;
7
8	use Exception;
9	use WPStaging\Framework\Component\AbstractTemplateComponent;
10	use WPStaging\Framework\TemplateEngine\TemplateEngine;
11	use WPStaging\Backup\Exceptions\BackupRuntimeException;
12	use WPStaging\Backup\Service\BackupsFinder;
13	use SplFileInfo;
14	use WPStaging\Core\WPStaging;
15	use WPStaging\Framework\Filesystem\FileObject;
16	use WPStaging\Backup\Entity\BackupMetadata;
17	use WPStaging\Framework\Utils\Cache\TransientCache;
18
19	use function WPStaging\functions\debug_log;
20
21	class Delete extends AbstractTemplateComponent
22	{
23	private $backupsFinder;
24
25	public function __construct(BackupsFinder $backupsFinder, TemplateEngine $templateEngine)
26	{
27	parent::__construct($templateEngine);
28	$this->backupsFinder = $backupsFinder;
29	}
30
31	/**
32	* @throws BackupRuntimeException
33	*/
34	public function render()
35	{
36	if (!$this->canRenderAjax()) {
37	return;
38	}
39
40	$md5 = isset($_POST['md5']) ? sanitize_text_field($_POST['md5']) : '';
41
42	if (strlen($md5) !== 32) {
43	wp_send_json([
44	'error' => true,
45	'message' => __('Invalid request.', 'wp-staging'),
46	]);
47	}
48
49	$backups = $this->backupsFinder->findBackups();
50
51	// Early bail: No backups found, nothing to delete
52	if (empty($backups)) {
53	wp_send_json([
54	'error' => true,
55	'message' => __('No backups found, nothing to delete.', 'wp-staging'),
56	]);
57	}
58
59	foreach ($backups as $backup) {
60	if ($md5 === md5($backup->getBasename())) {
61	$this->deleteBackup($backup);
62	}
63	}
64	}
65
66	/**
67	* @param SplFileInfo $backup
68	* @throws BackupRuntimeException
69	*/
70	protected function deleteBackup($backup)
71	{
72	if (!$this->deleteSplitBackupParts($backup)) {
73	return;
74	}
75
76	$deleted = unlink($backup->getRealPath());
77
78	if ($deleted) {
79	delete_transient(TransientCache::KEY_INVALID_BACKUP_FILE_INDEX);
80	wp_send_json([
81	'error' => false,
82	'message' => __('Successfully deleted the backup.', 'wp-staging'),
83	]);
84	} else {
85	debug_log('WP STAGING: User tried to delete backup but "unlink" returned false. Backup that couldn\'t be deleted: ' . $backup->getRealPath());
86
87	wp_send_json([
88	'error' => true,
89	'message' => __('Could not delete the backup. Maybe a permission issue?', 'wp-staging'),
90	]);
91	}
92	}
93
94	/**
95	* @param SplFileInfo $backup
96	*
97	* @return bool
98	* @throws BackupRuntimeException
99	*/
100	protected function deleteSplitBackupParts($backup)
101	{
102	clearstatcache();
103
104	try {
105	$file = new FileObject($backup->getRealPath(), FileObject::MODE_APPEND_AND_READ);
106	$backupMetadata = new BackupMetadata();
107	$backupMetadata->hydrate($file->readBackupMetadata());
108	} catch (Exception $e) {
109	// Couldn't read backup metadata, continue deleting the main file but log error
110	debug_log('WP STAGING: User tried to delete backup but "unlink" returned false on deleting backup parts. Backup that couldn\'t be deleted: ' . $backup->getRealPath());
111
112	return true;
113	}
114
115	// Early bail: Not a split backup
116	if (!$backupMetadata->getIsMultipartBackup()) {
117	return true;
118	}
119
120	$errors = [];
121
122	$backupsDirectory = WPStaging::make(BackupsFinder::class)->getBackupsDirectory();
123
124	foreach ($backupMetadata->getMultipartMetadata()->getBackupParts() as $part) {
125	$backupPart = $backupsDirectory . $part;
126	if (!file_exists($backupPart)) {
127	continue;
128	}
129
130	$deleted = unlink($backupPart);
131	if (!$deleted) {
132	$error = "Couldn't delete backup part. Maybe Permission Issue? Part: " . $backupPart;
133	debug_log('WP STAGING: ' . $error);
134
135	$errors[] = $error;
136	}
137	}
138
139	if (count($errors) === 0) {
140	return false;
141	}
142
143	wp_send_json([
144	'error' => true,
145	'message' => '',
146	'messages' => $errors
147	]);
148
149	return false;
150	}
151	}
152