....................................../////.===Shadow-Here===./////................................................ > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < ------------------------------------------------------------------------------------------------------------------- /////////////////////////////////////////////////////////////////////////////////////////////////////////////////// RIFF¤ WEBPVP8 ˜ ðÑ *ôô>‘HŸK¥¤"§£±¨àð enü¹%½_F‘åè¿2ºQú³íªú`N¿­3ÿƒügµJžaÿ¯ÿ°~¼ÎùnúîÞÖô•òíôÁÉß®Sm¥Ü/ ‡ó˜f£Ùà<˜„xëJ¢Ù€SO3x<ªÔ©4¿+ç¶A`q@Ì“Úñè™ÍÿJÌ´ª-˜ÆtÊÛL]Ïq*‘Ý”ì#ŸÌÏãY]@ê`¿ /ªfkØB4·®£ó z—Üw¥Pxù–ÞLШKÇN¾AkÙTf½è'‰g gÆv›Øuh~ a˜Z— ïj*á¥t d£“uÒ ¨`K˜¹ßþ]b>˜]_ÏÔ6W—è2r4x•íÖ…"ƒÖNîä!¦å Ú}ýxGøÌ —@ ;ÆÚŠ=ɾ1ý8lªË¥ô ^yf®Œ¢u&2©nÙÇ›ñÂñŒ³ aPo['½»øFùà­+4ê“$!lövlüÞ=;N®3ð‚õ›DÉKòÞ>ÄÍ ¥ˆuߤ#ˆ$6ù™¥îŠ‡y’ÍB¼ çxÛ;X"WL£R÷͝*ó-¶Zu}º.s¸sšXqù–DþÿvªhüïwyŸ ¯é³lÀ:KCûÄ£Ëá\…­ ~—ýóî ¼ûûÜTÓüÇy…ŽÆvc»¾×U ñ¸žþоP÷¦ó:Ò¨¨5;Ð#&#ÖúñläÿÁœ GxÉ­/ñ‡áQðìYÉtÒwŽ¼GÔ´zàÒò ð*ëzƒ•4~H]Ø‹f ñÓÈñ`NåWçs'ÆÏW^ø¹!XžµmQ5ÃËoLœÎ: ÞËÍ¥J ù…î èo£ßPÎñ¶ž8.Œ]ʵ~5›ÙË-ù*8ÙÖß±~ ©¹rÓê‚j¶d¸{^Q'˜±Crß ÚH—#¥¥QlÀ×ëã‡DÜ«èî þ&Çæžî;ŽÏºò6ÒLÃXy&ZŒ'j‚¢Ù€IßÚù+–MGi‰*jE€‘JcÜ ÓÌ EÏÚj]o˜ Þr <¾U ûŪæÍ/šÝH¥˜b”¼ ÁñßX GP›ï2›4WŠÏà×£…íÓk†¦H·ÅíMh–*nó÷à]ÁjCº€b7<ب‹¨5車bp2:Á[UªM„QŒçiNMa#<5›áËó¸HýÊ"…×Éw¹¦ì2º–x<›»a±¸3Weü®FÝ⑱ö–î–³|LPÈ~çð~Çå‡|º kD¢µÏàÆAI %1À% ¹Ò – ”ϝS¦‰4&¶£°à Öý”û_Ò Áw°A«Å€?mÇÛgHÉ/8)á¾ÛìáöŽP í¨PŸNÙµº¦‡§Ùš"ÿ«>+ªÕ`Ê÷‡‚ß Õû˜þãÇ-PÍ.¾XV‘€ dÜ"þ4¹ ±Oú‘©t¥¦FªÄÃÄ•b‚znýu½—#cDs˜ÃiÑOˆñ×QO=*IAÊ,¶ŽZƒ;‡wøXè%EÐk:F±Ú” .Ѽ+Áu&Ç`."pÈÉw o&¿dE6‘’EqTuK@Ì¥ã™À(Êk(h‰,H}RÀIXÛš3µ1©_OqÚÒJAñ$ÊÙÜ;D3çŒ[þùœh¬Ã³™ö6ç†NY".Ú‰ï[ªŸŒ '²Ð öø_¨ÂÉ9u鶳ÒŠõTàîMØ#û¯gN‡bÙ놚X„ö …ÉeüÌ^J ‹€.œ$Æ)βÄeæW#óüßĺŸ€ ÀzwV 9oä»f4V*uB «Ë†¹ì¯žR霓æHXa=&“I4K;¯ç‹h×·"UŠ~<•â•ªVêª&ÍSÃÆÅ?ÔqÎ*mTM ˜›µwêd#[C¡©§‘D<©àb†–ÁœøvH/,í:¯( ²£|4-„Æövv„Yͼ™^Á$ˆ„¢Û[6yB.åH*V¨æ?$=˜Ñ€•î¦ñ·­(VlŸ‘ nÀt8W÷´Bûba?q9ú¶Xƒl«ÿ\ù¶’þòUÐj/õ¢Ìµ³g$ƒÎR!¸»|Oߍë’BhîÚÑ¢ñåŒJ„®„£2Ð3•ô02Nt…!£Í]Ïc½Qÿ?ˆ<&ÃA¾Ú,JˆijÌ#5yz„‰Î|ÊŽ5QÏ:‹ÐaóVÔxW—CpeÏzÐïíçôÿÅ_[hãsÐ_/ŽTÝ?BîˆííV$<¿i>²F¬_Eß¿ †bÊŒº­ÿ®Z H“C}”¬,Mp ý/Bá£w>˜YV°aƒúh+cŠ- r/[%|üUMHäQ°X»|û/@|°¥Ð !BÔ Ç¢Ä©š+Õì D«7ìN¶ŽðÔ " ƶ’ÖçtA‰Û×}{tþz­¾GÍ›k¹OEJR$ Â׃ «ëÁ"oÉôž$oUK(Ä)Ãz³Ê-‹êN[Ò3Œñbï8P 4ƒ×q¢bo|?<ÛX¬òÄÍ°L–±›(™ûG?ýË©ÚÄ–ÂDØÐ_Ç¡ô ¾–ÄÏø ×e8Ë©$ÄF¹Å‹ì[©óìl:F¾f´‹‹Xì²ï®\¬ôùƒ ÿat¥óèÒùHß0äe‚;ü×h:ÆWðHž=Ã8骣"kœ'Y?³}Tûè€>?0l›e1Lòñ„aæKÆw…hÖŠùW…ÈÆÄ0ši·›[pcwËþñiêíY/~-Á5˜!¿†A›™Mÿþ(±“t@â“ö2­´TG5yé]çå僳 .·ÍïçÝ7UÚ±Ð/Nè»,_Ï ùdj7\ï Wì4›„»c¸àešg#ÒÊ⥭áØo5‘?ÌdÝô¯ ¹kzsƒ=´#ëÉK›Ø´±-¥eW?‡çßtòTã…$Ý+qÿ±ƒ÷_3Ô¥í÷:æ–ž<·Ö‡‰Å¢ š‡%Ô—utÌÈìðžgÖÀz²À—ï÷Óîäõ{K'´È÷³yaÏÁjƒô}ž§®æÊydÕÈë5¯èˆõvÕ©ã*çD„ “z„Ó‡^^xÂ3M§A´JG‚öï 3W'ˆ.OvXè¡ÊÕª?5º7†˜(˜Ç¶#çê’¶!ÌdZK§æ 0fãaN]òY³RV ™î$®K2R¨`W!1Ôó\;Ý ýB%qæK•&ÓÈe9È0êI±žeŸß -ú@žQr¦ ö4»M¼Áè¹µmw 9 EÆE_°2ó„ŸXKWÁ×Hóì^´²GѝF©óäR†¦‰ç"V»eØ<3ùd3ÿÚ¤Žú“Gi" —‘_ÙËÎ~Üö¯¥½Î»üŸEÚŽåmÞþí ;ÞólËΦMzA"Âf(´òá;Éï(/7½ûñÌ­cïÕçлþÝz¾-ÍvÑ“pH­–ðÓj$¸Äû¤‚‘ãUBË-n“2åPkS5&‹Â|+g^œ®Ì͆d!OïäîU«c;{Û!ÅŽ«ëZ9Ókóˆ]¯ƒ›né `ÇÒ+tÆš (ØKá¾—=3œ®•vuMñg²\ï Ec€ 05±d™‡×iÇ×›UúvÌ¢£Èþ¡ÕØô¶ßÎA"ß±#Ö²ˆÊŸ¦*Ä~ij|àø.-¼'»Ú¥£h ofº¦‡VsR=N½„Î v˜Z*SÌ{=jÑB‹tê…;’HžH¯8–îDù8ñ¢|Q•bÛçš–‹m³“ê¨ åÏ^m¬Žãþ©ïêO‡½6] µÆ„Ooòü ²x}N¦Ë3ïé¿»€›HA˜m%çÞ/¿í7Fø“‹léUk)É°Œµ8Q8›:ÀŠeT*šõ~ôڝG6 ¢}`ùH­–”¡k ‰P1>š†®9z11!X wKfmÁ¦xÑ,N1Q”–æB¶M…ÒÃv6SMˆhU¬ÊPŽï‘öj=·CŒ¯u¹ƒVIЃsx4’ömÛýc塶7ßŠß 57^\wÒÐÆ k§h,Œý î«q^R½3]J¸ÇðN ‚çU¬ôº^Áì} ³f©Õœ§ˆã:FÄÈ‚é(€™?àýÓüè1Gô£¼éj‚OÅñ  #>×—ßtà 0G¥Åa뀐kßhc™À_ÉñÞ#±)GD" YîäË-ÿÙ̪ ¹™a¯´¢E\ÝÒö‚;™„ë]_ p8‰o¡ñ+^÷ 3‘'dT4œŽ ðVë½° :¬víÑ«£tßÚS-3¶“þ2 †üüʨòrš¹M{É_¤`Û¨0ìjœøJ‡:÷ÃáZ˜†@GP&œÑDGÏs¡þ¦þDGú‘1Yá9Ôþ¼ ûø…§÷8&–ÜÑnÄ_m®^üÆ`;ÉVÁJ£?â€-ßê}suÍ2sõA NÌúA磸‘îÿÚ»ƒìö·á¿±tÑÐ"Tÿü˜[@/äj¬€uüªìù¥Ý˜á8Ý´sõj 8@rˆð äþZÇD®ÿUÏ2ùôõrBzÆÏÞž>Ì™xœ“ wiÎ×7_… ¸ \#€MɁV¶¥üÕÿPÔ9Z‡ø§É8#H:ƒ5ÀÝå9ÍIŒ5åKÙŠ÷qÄ>1AÈøžj"µÂд/ªnÀ qªã}"iŸBå˜ÓÛŽ¦…&ݧ;G@—³b¯“•"´4í¨ôM¨åñC‹ïùÉó¯ÓsSH2Ý@ßáM‡ˆKÀªÛUeø/4\gnm¥‹ŸŒ qÄ b9ÞwÒNÏ_4Ég³ú=܆‚´ •â¥õeíþkjz>éÚyU«Íӝ݃6"8/ø{=Ô¢»G¥ äUw°W«,ô—¿ãㆅү¢³xŠUû™yŒ (øSópÐ 9\åTâ»—*oG$/×ÍT†Y¿1¤Þ¢_‡ ¼ „±ÍçèSaÓ 3ÛMÁBkxs‰’R/¡¤ˆÙçª(*õ„üXÌ´ƒ E§´¬EF"Ù”R/ÐNyÆÂ^°?™6¡œïJ·±$§?º>ÖüœcNÌù¯G ‹ñ2ŠBB„^·úìaz¨k:#¨Æ¨8LÎõލ£^§S&cŒÐU€ü(‡F±Š¼&P>8ÙÁ ‰ p5?0ÊƃZl¸aô š¼¡}gÿ¶zÆC²¹¬ÎÖG*HB¡O<º2#ñŒAƒ–¡B˜´É$¥›É:FÀÔx¾u?XÜÏÓvN©RS{2ʈãk9rmP¼Qq̳ è¼ÐFׄ^¡Öì fE“F4A…!ì/…¦Lƒ… … $%´¾yã@CI¬ á—3PþBÏNÿ<ý°4Ü ËÃ#ØÍ~âW«rEñw‹eùMMHß²`¬Öó½íf³:‹k˜¯÷}Z!ã¿<¥,\#öµÀ¯aÒNÆIé,Ћ–lŽ#Àæ9ÀÒS·I’½-Ïp Äz¤Š Â* ­íÄ9­< h>׍3ZkËU¹§˜ŒŠ±f­’¤º³Q ÏB?‹#µíÃ¥®@(Gs«†vI¥Mµ‹Á©e~2ú³ÁP4ìÕi‚²Ê^ö@-DþÓàlÜOÍ]n"µã:žpsŽ¢:! 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Current File : /home/tecnoelite/public_html/wp-content/plugins/wp-optimize/includes/class-updraft-smush-task.php
<?php
/**
 *  A sample implementation using the Resmush.it API and our tasks library
 */

if (!defined('ABSPATH')) die('Access denied.');

if (!class_exists('Updraft_Task_1_2')) require_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task.php');

if (!class_exists('Updraft_Smush_Task')) :

abstract class Updraft_Smush_Task extends Updraft_Task_1_2 {

	/**
	 * A flag indicating if the operation was successful
	 *
	 * @var bool
	 */
	protected $success = false;

	/**
	 * A text descriptor describing the stage of the task
	 *
	 * @var string
	 */
	protected $stage;

	/**
	 * Initialise the task
	 *
	 * @param Array $options - options to use
	 */
	public function initialise($options = array()) {
		parent::initialise($options);
		$this->set_current_stage('initialised');
		do_action('ud_task_initialised', $this);
	}

	/**
	 * Runs the task
	 *
	 * @return bool - true if complete, false otherwise
	 */
	public function run() {

		$this->set_status('active');
		
		do_action('ud_task_started', $this);

		$attachment_id	= $this->get_option('attachment_id');

		if (is_multisite()) {
			switch_to_blog($this->get_option('blog_id', 1));
			$file_path = get_attached_file($attachment_id);
			restore_current_blog();
		} else {
			$file_path = get_attached_file($attachment_id);
		}

		if (!$this->validate_file($file_path)) return false;

		$api_endpoint = $this->get_option('api_endpoint');

		if (false === filter_var($api_endpoint, FILTER_VALIDATE_URL)) {
			$this->fail('invalid_api_url', "The API endpoint supplied {$api_endpoint} is invalid");
			return false;
		}

		$original_image = $file_path;
		$backup_original_image = $this->get_option('keep_original', true);

		// add possibility to exclude certain image sizes from smush.
		$dont_smush_sizes = apply_filters('wpo_dont_smush_sizes', array());

		$this->update_option('original_filesize', filesize($file_path));

		// build list of files for smush.
		$files = array_merge(array('full' => $file_path), WPO_Image_Utils::get_attachment_files($attachment_id));

		$sizes_info = array();
		$webp_tools_available = true;
		$lossy = $this->get_option('lossy_compression');
		if ($lossy) {
			$quality = $this->get_option('image_quality');
		} else {
			$quality = 92;
		}
		$this->log($this->get_description());
		$this->log("File: " . basename($file_path) . ", Compression quality: {$quality}");

		foreach ($files as $size => $file_path) {

			if (in_array($size, $dont_smush_sizes)) continue;

			$file_size = filesize($file_path);

			if ($file_size > 5242880) {
				$this->update_option('request_timeout', 180);
			}

			$ext = WPO_Image_Utils::get_extension($file_path);
			$allowed_extensions = WPO_Image_Utils::get_allowed_extensions();
			$allowed_extensions = array_diff($allowed_extensions, array('gif'));
			if (WPO_WebP_Utils::can_do_webp_conversion()) {
				if (WPO_Image_Utils::is_supported_extension($ext, $allowed_extensions)) {
					WPO_WebP_Utils::do_webp_conversion($file_path);
				}
			} else {
				$webp_tools_available = false;
			}


			/**
			 * Filters the options for a single image to compress.
			 * Currently supports:
			 * - 'quality': Will use the image quality set in this filter, instead of the one defined in the settings.
			 *
			 * @param array   $options       - The options (default: empty array)
			 * @param integer $attachment_id - The attachment post ID
			 * @param string  $file_path     - The path to the file being compressed
			 * @param string  $size          - The size name (e.g. 'thumbnail')
			 */
			$options = apply_filters('wpo_image_compression_single_image_options', array(), $attachment_id, $file_path, $size);

			$post_data = $this->prepare_post_request($file_path, $options);

			$response = $this->post_to_remote_server($api_endpoint, $post_data);
			$optimised_image = $this->process_server_response($response);

			if ($optimised_image) {
				$backup_image = ($original_image == $file_path) ? $backup_original_image : false;
				$this->save_optimised_image($file_path, $optimised_image, $backup_image);

				clearstatcache($file_path);

				$sizes_info[$size] = array(
					'original' => $file_size,
					'compressed' => filesize($file_path),
				);
			}
			
		}

		$this->update_option('smush-sizes-info', $sizes_info);

		if (!$webp_tools_available) {
			$this->log('There were no WebP conversion tools found on your server.');
		}

		return $this->success;
	}

	/**
	 * Posts the supplied data to the API url and returns a response
	 *
	 * @param String $api_endpoint - the url to post the form to
	 * @param String $post_data	   - the post data as specified by the server
	 * @return mixed - the response
	 */
	public function post_to_remote_server($api_endpoint, $post_data) {

		$this->set_current_stage('connecting');
		$response = wp_remote_post($api_endpoint, $post_data);
		
		if (is_wp_error($response)) {
			$this->fail($response->get_error_code(), $response->get_error_message());
			return false;
		}

		return $response;
	}

	/**
	 * Processes the response received from the remote server
	 *
	 * @param mixed $response - the response object
	 * @return mixed - the response
	 */
	public function process_server_response($response) {
		$this->set_current_stage('processing_response');
		return $response;
	}

	/**
	 * Checks if a file is valid and capable of being smushed
	 *
	 * @param String $file_path - the path of the original image
	 * @return bool - true on success, false otherwise
	 */
	public function validate_file($file_path) {

		$allowed_file_types = $this->get_option('allowed_file_types');

		if (!file_exists($file_path)) {
			$this->fail("invalid_file_path", "The linked attachment ID does not have a valid file path");
			return false;
		}

		if (filesize($file_path) > $this->get_option('max_filesize')) {
			$this->fail("exceeded_max_filesize", "$file_path - cannot be optimized, file size is above service provider limit");
			return false;
		}

		if (!in_array(strtolower(pathinfo($file_path, PATHINFO_EXTENSION)), $allowed_file_types)) {
			$this->fail("invalid_file_type", "$file_path - cannot be optimized, it has an invalid file type");
			return false;
		}

		return true;
	}

	/**
	 * Creates a backup of the original image
	 *
	 * @param String $file_path - the path of the original image
	 * @return bool - true on success, false otherwise
	 */
	public function backup_original_image($file_path) {
				
		$this->set_current_stage('backup_original');

		if (is_multisite()) {
			switch_to_blog($this->get_option('blog_id', 1));
		}

		$file = pathinfo($file_path);
		$back_up = wp_normalize_path($file['dirname'].'/'.basename($file['filename'].$this->get_option('backup_prefix').$file['extension']));
		$uploads_dir = wp_upload_dir();

		// Make path relative and safe for migrations
		$back_up_relative_path = preg_replace('#^'.wp_normalize_path($uploads_dir['basedir'].'/').'#', '', $back_up);

		update_post_meta($this->get_option('attachment_id'), 'original-file', $back_up_relative_path);

		if (is_multisite()) {
			restore_current_blog();
		}

		$this->log("Backing up the original image - {$back_up_relative_path}");

		return copy($file_path, $back_up);
	}

	/**
	 * Creates a backup of the original image
	 *
	 * @param String $file_path 	  - the path of the original image
	 * @param Mixes  $optimised_image - the contents of the image
	 * @param bool   $backup_original - backup original image
	 *
	 * @return bool - true on success, false otherwise
	 */
	private function save_optimised_image($file_path, $optimised_image, $backup_original) {
		
		$this->set_current_stage('saving_image');

		if ($backup_original)
			$this->backup_original_image($file_path);

		if (false !== file_put_contents($file_path, $optimised_image)) {
			$this->success = true;
		} else {
			$this->success = false;
		}

		return $this->success;
	}

	/**
	 * Fires if the task succeeds, any clean up code and logging goes here
	 */
	public function complete() {

		$attachment_id	= $this->get_option('attachment_id');

		if (is_multisite()) {
			switch_to_blog($this->get_option('blog_id', 1));
			$file_path = get_attached_file($attachment_id);
			restore_current_blog();
		} else {
			$file_path = get_attached_file($attachment_id);
		}

		$original_size = $this->get_option('original_filesize');
		$this->set_current_stage('completed');

		clearstatcache(true, $file_path);
		if (0 == $original_size) {
			$saved = '';
			// translators: %s is a file size
			$info = sprintf(__("The file was compressed to %s using WP-Optimize", 'wp-optimize'), WP_Optimize()->format_size(filesize($file_path)));
		} else {
			$saved = round((($original_size - filesize($file_path)) / $original_size * 100), 2);
			// translators: %1$s is a file size, %2$s is a file size, %3$s is a percentage
			$info = sprintf(__('The file was compressed from %1$s to %2$s, saving %3$s percent, using WP-Optimize', 'wp-optimize'), WP_Optimize()->format_size($original_size), WP_Optimize()->format_size(filesize($file_path)), $saved);
		}

		$stats = array(
			'smushed-with'  	=> $this->label,
			'original-size' 	=> $original_size,
			'smushed-size'		=> filesize($file_path),
			'savings-percent' 	=> $saved,
			'sizes-info'		=> $this->get_option('smush-sizes-info'),
		);

		if (is_multisite()) {
			switch_to_blog($this->get_option('blog_id', 1));
			update_post_meta($attachment_id, 'smush-complete', true);
			update_post_meta($attachment_id, 'smush-info', $info);
			update_post_meta($attachment_id, 'smush-stats', $stats);
			restore_current_blog();
		} else {
			update_post_meta($attachment_id, 'smush-complete', true);
			update_post_meta($attachment_id, 'smush-info', $info);
			update_post_meta($attachment_id, 'smush-stats', $stats);
		}

		$this->log("Successfully optimized the image - {$file_path}." . $info);
		$this->set_status('complete');

		return parent::complete();
	}

	/**
	 * Fires if the task fails, any clean up code and logging goes here
	 *
	 * @param String $error_code	- A code for the failure
	 * @param String $error_message - A description for the failure
	 */
	public function fail($error_code = "Unknown", $error_message = "Unknown") {

		$attachment_id = $this->get_option('attachment_id');

		// translators: %1$s is the error code, %2$s is the error message
		$info = sprintf(__('Failed with error code %1$s - %2$s', 'wp-optimize'), $error_code, $error_message);

		if (is_multisite()) {
			switch_to_blog($this->get_option('blog_id', 1));
			update_post_meta($attachment_id, 'smush-info', $info);
			update_post_meta($attachment_id, 'smush-complete', false);
			restore_current_blog();
		} else {
			update_post_meta($attachment_id, 'smush-info', $info);
			update_post_meta($attachment_id, 'smush-complete', false);
		}


		do_action('ud_smush_task_failed', $this, $error_code, $error_message);

		return parent::fail($error_code, $error_message);
	}
	
	/**
	 * Get all the supported task stages.
	 *
	 * @return array - list of task stages.
	 */
	public function get_allowed_stages() {
		
		$stages = array(
			'initialised' => __('Initialised', 'wp-optimize'),
			'connecting'   => __('Connecting to API server', 'wp-optimize'),
			'processing_response' => __('Processing response', 'wp-optimize'),
			'backup_original' => __('Backing up original image', 'wp-optimize'),
			'saving_image' => __('Saving optimized image', 'wp-optimize'),
			'completed' => __('Successful', 'wp-optimize'),
		);

		return apply_filters('allowed_task_stages', $stages);
	}

	/**
	 * Get features available with this service
	 *
	 * @return Array - an array of features
	 */
	public static function get_features() {
		return array(
			'max_filesize' => self::MAX_FILESIZE,
			'lossy_compression' => true,
			'preserve_exif' => true,
		);
	}

	/**
	 * Retrieve default options for this task.
	 * This method should normally be over-ridden by the child.
	 *
	 * @return Array - an array of options
	 */
	public function get_default_options() {

		return array(
			'allowed_file_types' => WPO_Image_Utils::get_allowed_extensions(),
			'request_timeout' => 15,
			'image_quality' => 92,
			'backup_prefix' => '-updraft-pre-smush-original.'
		);
	}

	/**
	 * Sets the task stage.
	 *
	 * @param String $stage - the current stage of the task
	 * @return bool - the result of the  update
	 */
	public function set_current_stage($stage) {
		
		if (array_key_exists($stage, self::get_allowed_stages())) {
			$this->stage = $stage;
			return $this->update_option('current_stage', $this->stage);
		}
		
		return false;
	}

	/**
	 * Gets the task stage
	 *
	 * @return String $stage - the current stage of the task
	 */
	public function get_current_stage() {
		if (isset($this->stage))
			return $this->stage;
		else return $this->get_option('current_stage');
	}

	/**
	 * Check the mime type of a downloaded file, returns true if it is a valid image mime type.
	 *
	 * @param string $file_buffer The buffer string downloaded from the compression service
	 * @return boolean
	 */
	protected function is_downloaded_image_buffer_mime_type_valid($file_buffer) {
		// If the required class does not exist, return true to avoid breaking the functionality
		if (!class_exists('finfo')) return true;
		$accepted_types = apply_filters('wpo_image_compression_accepted_mime_types', array('image/png', 'image/jpeg', 'image/jpg', 'image/gif', 'image/webp'));
		// The ignore rule below is added because "finfo" doesn't exist in PHP5.2.
		$finfo = new finfo(FILEINFO_MIME_TYPE);
		$mime_type = $finfo->buffer($file_buffer);
		return in_array($mime_type, $accepted_types);
	}
}
endif;

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