From d118ab71e6aa4f300ba6e42663d13a63a2323122 Mon Sep 17 00:00:00 2001
From: Mario <mario@mariovavti.com>
Date: Mon, 21 Dec 2020 21:37:10 +0000
Subject: files_ng: implement directory and bulk file download

---
 Zotlabs/Module/Attach.php | 128 +++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 110 insertions(+), 18 deletions(-)

(limited to 'Zotlabs/Module/Attach.php')

diff --git a/Zotlabs/Module/Attach.php b/Zotlabs/Module/Attach.php
index 490d5edd0..86183056c 100644
--- a/Zotlabs/Module/Attach.php
+++ b/Zotlabs/Module/Attach.php
@@ -1,46 +1,100 @@
 <?php
 namespace Zotlabs\Module;
 
+use ZipArchive;
+use Zotlabs\Web\Controller;
+
 require_once('include/security.php');
 require_once('include/attach.php');
 
+class Attach extends Controller {
+
+	function post() {
+
+		$attach_ids = ((x($_REQUEST, 'attach_ids')) ? $_REQUEST['attach_ids'] : []);
+
+		if ($attach_ids) {
+
+			$ret = ['success' => false];
+
+			$channel_id = ((x($_REQUEST, 'channel_id')) ? intval($_REQUEST['channel_id']) : 0);
+			$channel = channelx_by_n($channel_id);
+
+			if (! $channel) {
+				notice(t('Channel not found.') . EOL);
+				return;
+			}
+
+			$zip_dir = 'store/[data]/' . $channel['channel_address'] . '/tmp';
+			if (! is_dir($zip_dir))
+				mkdir($zip_dir, STORAGE_DEFAULT_PERMISSIONS, true);
+
+			$rnd = random_string(10);
+
+			$zip_file = 'download_' . $rnd . '.zip';
+			$zip_path = $zip_dir . '/' . $zip_file;
+
+			$zip = new ZipArchive();
 
-class Attach extends \Zotlabs\Web\Controller {
+			if ($zip->open($zip_path, ZipArchive::CREATE) === true) {
+
+				$filename = self::zip_archive_handler($zip, $attach_ids);
+
+				$zip->close();
+
+				header('Content-Type: application/zip');
+				header('Content-Disposition: attachment; filename="' . $filename . '"');
+				header('Content-Length: ' . filesize($zip_path));
+
+				$istream = fopen($zip_path, 'rb');
+				$ostream = fopen('php://output', 'wb');
+
+				if ($istream && $ostream) {
+					pipe_streams($istream,$ostream);
+					fclose($istream);
+					fclose($ostream);
+				}
+
+				unlink($zip_path);
+				killme();
+			}
+		}
+	}
+
+	function get() {
 
-	function init() {
-	
 		if(argc() < 2) {
 			notice( t('Item not available.') . EOL);
 			return;
 		}
-	
+
 		$r = attach_by_hash(argv(1),get_observer_hash(),((argc() > 2) ? intval(argv(2)) : 0));
-	
+
 		if(! $r['success']) {
 			notice( $r['message'] . EOL);
 			return;
 		}
-	
+
 		$c = q("select channel_address from channel where channel_id = %d limit 1",
 			intval($r['data']['uid'])
 		);
-	
+
 		if(! $c)
 			return;
-	
-	
+
+
 		$unsafe_types = array('text/html','text/css','application/javascript');
-	
+
 		if(in_array($r['data']['filetype'],$unsafe_types) && (! channel_codeallowed($r['data']['uid']))) {
-				header('Content-type: text/plain');
+				header('Content-Type: text/plain');
 		}
 		else {
-			header('Content-type: ' . $r['data']['filetype']);
+			header('Content-Type: ' . $r['data']['filetype']);
 		}
-	
-		header('Content-disposition: attachment; filename="' . $r['data']['filename'] . '"');
+
+		header('Content-Disposition: attachment; filename="' . $r['data']['filename'] . '"');
 		if(intval($r['data']['os_storage'])) {
-			$fname = dbunescbin($r['data']['content']);
+			$fname = $r['data']['content'];
 			if(strpos($fname,'store') !== false)
 				$istream = fopen($fname,'rb');
 			else
@@ -53,9 +107,47 @@ class Attach extends \Zotlabs\Web\Controller {
 			}
 		}
 		else
-			echo dbunescbin($r['data']['content']);
+			echo $r['data']['content'];
 		killme();
-	
+
+	}
+
+	function zip_archive_handler($zip, $attach_ids, $pass = 1) {
+
+		$observer_hash = get_observer_hash();
+		$single = ((count($attach_ids) == 1) ? true : false);
+		$filename = 'download.zip';
+
+		foreach($attach_ids as $attach_id) {
+
+			$r = attach_by_id($attach_id, $observer_hash);
+
+			if (! $r['success']) {
+				continue;
+			}
+
+			if ($r['data']['is_dir'] && $single && $pass === 1)
+				$filename = $r['data']['filename'] . '.zip';
+
+			if ($r['data']['is_dir']) {
+				$zip->addEmptyDir($r['data']['display_path']);
+
+				$d = q("SELECT id FROM attach WHERE folder = '%s'",
+					dbesc($r['data']['hash'])
+				);
+
+				$attach_ids = ids_to_array($d);
+				self::zip_archive_handler($zip, $attach_ids, $observer_hash, $pass++);
+			}
+			else {
+				$file_path = $r['data']['content'];
+				$file_name = $r['data']['display_path'];
+				$zip->addFile($file_path, $file_name);
+			}
+
+		}
+
+		return $filename;
 	}
-	
+
 }
-- 
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