← All changes | admin/helpers/src/backup/export/director.php +220 -0 1.6.2 → 1.8.16 View file →

		@@ -1,0 +1,220 @@
	1	+<?php
	2	+/**
	3	+ * @package VikBooking
	4	+ * @subpackage core
	5	+ * @author E4J s.r.l.
	6	+ * @copyright Copyright (C) 2021 E4J s.r.l. All Rights Reserved.
	7	+ * @license http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL
	8	+ * @link https://vikwp.com
	9	+ */
	10	+
	11	+// No direct access
	12	+defined('ABSPATH') or die('No script kiddies please!');
	13	+
	14	+/**
	15	+ * Wraps the instructions used to create a backup.
	16	+ *
	17	+ * @since 1.5
	18	+ */
	19	+class VBOBackupExportDirector
	20	+{
	21	+ /**
	22	+ * An array of export rules.
	23	+ *
	24	+ * @var VBOBackupExportRule[]
	25	+ */
	26	+ private $rules = [];
	27	+
	28	+ /**
	29	+ * The instance used to manage the archive.
	30	+ *
	31	+ * @var VBOBackupExportArchive
	32	+ */
	33	+ private $archive;
	34	+
	35	+ /**
	36	+ * The version to use for the backup manifest.
	37	+ *
	38	+ * @var string
	39	+ */
	40	+ private $version;
	41	+
	42	+ /**
	43	+ * A lookup used to register the compatible version for each CMS.
	44	+ *
	45	+ * @var array
	46	+ */
	47	+ private $platforms = [];
	48	+
	49	+ /**
	50	+ * Class constructor.
	51	+ *
	52	+ * @param string $path The archive path.
	53	+ */
	54	+ public function __construct($path)
	55	+ {
	56	+ // init archive manager
	57	+ $this->archive = new VBOBackupExportArchive($path);
	58	+ }
	59	+
	60	+ /**
	61	+ * Sets the version of the manifest.
	62	+ *
	63	+ * @param string $version
	64	+ *
	65	+ * @return self This object to support chaining.
	66	+ */
	67	+ public function setVersion($version, $platform = null)
	68	+ {
	69	+ if (is_null($platform))
	70	+ {
	71	+ // register generic version
	72	+ $this->version = $version;
	73	+ }
	74	+ else
	75	+ {
	76	+ // register platform version
	77	+ $this->platforms[$platform] = $version;
	78	+ }
	79	+
	80	+ return $this;
	81	+ }
	82	+
	83	+ /**
	84	+ * Creates a new export rule.
	85	+ *
	86	+ * @param string $rule The identifier of the rule to create.
	87	+ * @param mixed $data The instructions used for the rule setup.
	88	+ *
	89	+ * @return self This object to support chaining.
	90	+ *
	91	+ * @throws Exception
	92	+ */
	93	+ public function createRule($rule, $data)
	94	+ {
	95	+ // build class name
	96	+ $classname = preg_replace("/_/", ' ', $rule);
	97	+ $classname = preg_replace("/\s+/", '', ucwords($classname));
	98	+ $classname = 'VBOBackupExportRule' . $classname;
	99	+
	100	+ // make sure the rule class exists
	101	+ if (!class_exists($classname))
	102	+ {
	103	+ // class not found
	104	+ throw new Exception(sprintf('Cannot find [%s] export rule class', $classname), 404);
	105	+ }
	106	+
	107	+ // attach the rule
	108	+ return $this->attachRule(new $classname($this->archive, $data));
	109	+ }
	110	+
	111	+ /**
	112	+ * Attaches the specified rule as export instruction.
	113	+ *
	114	+ * @param VBOBackupExportRule $rule The rule to attach.
	115	+ *
	116	+ * @return self This object to support chaining.
	117	+ */
	118	+ public function attachRule(VBOBackupExportRule $rule)
	119	+ {
	120	+ // register rule only if there is some data to export
	121	+ if ($rule->getData())
	122	+ {
	123	+ $this->rules[] = $rule;
	124	+ }
	125	+
	126	+ return $this;
	127	+ }
	128	+
	129	+ /**
	130	+ * Returns an array of registered installer rules.
	131	+ *
	132	+ * @return VBOBackupExportRule[]
	133	+ */
	134	+ public function getRules()
	135	+ {
	136	+ return $this->rules;
	137	+ }
	138	+
	139	+ /**
	140	+ * Compresses the archive.
	141	+ *
	142	+ * @return string The archive path.
	143	+ */
	144	+ public function compress()
	145	+ {
	146	+ // create manifest
	147	+ $manifest = $this->createManifest();
	148	+
	149	+ if (defined('JSON_PRETTY_PRINT'))
	150	+ {
	151	+ $flag = JSON_PRETTY_PRINT;
	152	+ }
	153	+ else
	154	+ {
	155	+ $flag = 0;
	156	+ }
	157	+
	158	+ // try to encode the manifest in JSON format
	159	+ $json = json_encode($manifest, $flag);
	160	+
	161	+ if ($json === false)
	162	+ {
	163	+ // an error has occurred while trying to encode the manifest file in JSON format
	164	+ throw new UnexpectedValueException('Failed to encode the manifest file. Error: ' . json_last_error() . '.', 500);
	165	+ }
	166	+
	167	+ // add manifest file into the root of the archive
	168	+ $this->archive->addBuffer($json, 'manifest.json');
	169	+
	170	+ // complete the backup process by creating the archive
	171	+ return $this->archive->compress();
	172	+ }
	173	+
	174	+ /**
	175	+ * Creates the backup manifest.
	176	+ *
	177	+ * @return object The backup manifest to be encoded in JSON format.
	178	+ */
	179	+ protected function createManifest()
	180	+ {
	181	+ // before to compress the archive, we need to create the installation manifest
	182	+ $manifest = new stdClass;
	183	+ $manifest->title = basename($this->archive->getPath());
	184	+ $manifest->version = $this->version ?: VIKBOOKING_SOFTWARE_VERSION;
	185	+ $manifest->application = 'Vik Booking';
	186	+ $manifest->signature = md5($manifest->application . ' ' . $manifest->version);
	187	+ $manifest->langtag = '*';
	188	+ $manifest->dateCreated = JFactory::getDate()->toSql();
	189	+ $manifest->installers = $this->getRules();
	190	+
	191	+ if ($this->platforms)
	192	+ {
	193	+ $manifest->platforms = new stdClass;
	194	+
	195	+ foreach ($this->platforms as $id => $version)
	196	+ {
	197	+ $manifest->platforms->{$id} = new stdClass;
	198	+ $manifest->platforms->{$id}->version = $version;
	199	+ $manifest->platforms->{$id}->signature = md5($manifest->application . ' ' . $id . ' ' . $version);
	200	+ }
	201	+ }
	202	+
	203	+ $app = JFactory::getApplication();
	204	+
	205	+ /**
	206	+ * Trigger event to allow third party plugins to manipulate the backup manifest.
	207	+ * Fires just before performing the compression of the archive.
	208	+ *
	209	+ * @param object $manifest The backup manifest.
	210	+ * @param VBOBackupExportArchive $archive The instance used to manage the archive.
	211	+ *
	212	+ * @return void
	213	+ *
	214	+ * @since 1.5
	215	+ */
	216	+ $app->triggerEvent('onCreateBackupManifestVikBooking', [$manifest, $this->archive]);
	217	+
	218	+ return $manifest;
	219	+ }
	220	+}