handle failure to get image dimensions in thumb updater tool

CHANGELOG.txt

@@ -20,6 +20,7 @@ Changelog
 [S] = Security fix (issues that are related to security)
 *********************************************
 
+2022-02-02 [B] Handle failure to get image dimensions in thumb updater tool {ron4mac}
 2021-11-22 [B] Allow ratings from different logged in users regardless of IP address {ron4mac}
 2021-11-20 [M] Update third party (ZenPhoto maintained) exif reader {ron4mac}
 2021-11-15 [M] Change bridge file for SMF 2.1 to function with latest SMF version {ron4mac}

include/cpg16x.files.xml

@@ -2,7 +2,7 @@
 <file_data>
 	<element>
 		<fullpath>CHANGELOG.txt</fullpath>
-		<version>1.6.16</version>
+		<version>1.6.17</version>
 		<status>optional</status>
 		<permission>read</permission>
 		<hash>5e0e634d953531ceb89ae1ecf2b51496</hash>
@@ -9248,7 +9248,7 @@
 	</element>
 	<element>
 		<fullpath>tools/upd_thumbs/upd_thumbs.php</fullpath>
-		<version>1.6.06</version>
+		<version>1.6.17</version>
 		<status>optional</status>
 		<permission>read</permission>
 		<hash>7a53f53f2db7377dad051f2c5babd7d4</hash>

tools/upd_thumbs/upd_thumbs.php

@@ -4,11 +4,11 @@
  *
  * v1.0 originally written by Gregory Demar
  *
- * @copyright  Copyright (c) 2003-2018 Coppermine Dev Team
+ * @copyright  Copyright (c) 2003-2022 Coppermine Dev Team
  * @license    GNU General Public License version 3 or later; see LICENSE
  *
  * tools/upd_thumbs/upd_thumbs.php
- * @since  1.6.06
+ * @since  1.6.17
  */
 
 /* declare each item separately - not as an entire array() */
@@ -104,6 +104,11 @@ public function process ()
 				}
 
 				$imagesize = cpg_getimagesize($work_image);
+				if (!$imagesize[0] || !$imagesize[1]) {
+					echo $this->_('filesize_error') . ' <tt>' . $work_image .'</tt><br>';
+					$this->errcnt++;
+					continue;
+				}
 
 				if ($updatetype == 3 || $updatetype == 4 || $updatetype == 5) {
 					// resize full-sized picture without watermark (will be applied later) if it's bigger than the max width or height for uploaded pictures