Bug #72819 [Fbk->Asn]: EXIF thumbnails not read anymore

Edit report at https://bugs.php.net/bug.php?id=72819&edit=1 ID: 72819 User updated by: php dot bohwaz at miam dot kd2 dot org Reported by: php dot bohwaz at miam dot kd2 dot org Summary: EXIF thumbnails not read anymore -Status: Feedback +Status: Assigned Type: Bug Package: EXIF related Operating System: Debian Linux Jessie PHP Version: 5.6.24 Assigned To: cmb Block user comment: N Private report: N New Comment: Yup I saw that bug but the patch seems to only affect Samsung photos, and my problem happens with every photo I tried, so not sure how that patch would affect this issue. In any case I will try with the git branch next week just to be sure. Previous Comments: ------------------------------------------------------------------------ [2016-08-12 08:42:10] cmb@php.net This appears to be a duplicate of bug #72735, which has been fixed as of PHP 5.6.25. Please try this version. ------------------------------------------------------------------------ [2016-08-12 04:47:13] php dot bohwaz at miam dot kd2 dot org (Continued, as antispam forbids me from posting too many URLs) with different errors, or sometimes no error, but still no thumbnail: $ php -r 'var_dump(strlen(exif_thumbnail("http://bohwaz.net/photos/2014/02-fevrier/p20140219_193908.jpg")));' int(0) $ php -r 'var_dump(strlen(exif_thumbnail("http://bohwaz.net/photos/2014/01-janvier/p20140117_080901.jpg")));' int(0) $ php -r 'var_dump(strlen(exif_thumbnail("http://bohwaz.net/photos/2014/01-janvier/12-Val_Suzon/p20140112_140758.jpg")));' PHP Warning: exif_thumbnail(p20140112_140758.jpg): corrupt EXIF header: maximum directory nesting level reached in Command line code on line 1 Warning: exif_thumbnail(p20140112_140758.jpg): corrupt EXIF header: maximum directory nesting level reached in Command line code on line 1 int(0) ------------------------------------------------------------------------ [2016-08-12 04:46:42] php dot bohwaz at miam dot kd2 dot org Other examples from other cameras: http://bohwaz.net/photos/2014/02-fevrier/p20140219_193908.jpg (Panasonic Lumix GF5) http://bohwaz.net/photos/2014/01-janvier/p20140117_080901.jpg (Nokia E7 phone) http://bohwaz.net/photos/2014/01-janvier/12-Val_Suzon/p20140112_140758.jpg (Fujifilm HS20 EXR) ------------------------------------------------------------------------ [2016-08-12 04:45:19] php dot bohwaz at miam dot kd2 dot org Description: ------------ I am using PHP to extract thumbnails from JPEG files, and this used to work fine, but I upgraded to PHP 5.6 (from 5.4) and now it seems that exif_* functions are unable to find thumbnail data in every JPEG file I'm trying. Works: $ php -v && php -r 'var_dump(strlen(exif_thumbnail("http://www.exiv2.org/include/img_1771.jpg")));' PHP 5.4.45-0+deb7u4 (cli) (built: Jun 29 2016 14:51:18) Copyright (c) 1997-2014 The PHP Group Zend Engine v2.4.0, Copyright (c) 1998-2014 Zend Technologies int(5448) Doesn't work: $ php -v && php -r 'var_dump(strlen(exif_thumbnail("http://www.exiv2.org/include/img_1771.jpg")));' PHP 5.6.24-0+deb8u1 (cli) (built: Jul 26 2016 08:17:07) Copyright (c) 1997-2016 The PHP Group Zend Engine v2.6.0, Copyright (c) 1998-2016 Zend Technologies with Zend OPcache v7.0.6-dev, Copyright (c) 1999-2016, by Zend Technologies PHP Warning: exif_thumbnail(img_1771.jpg): IFD data bad offset: 0xFFFFFC52 length 0x01C2 in Command line code on line 1 Warning: exif_thumbnail(img_1771.jpg): IFD data bad offset: 0xFFFFFC52 length 0x01C2 in Command line code on line 1 int(0) Same result with exif_read_image_data(), the THUMBNAIL section is never populated. Other examples from other cameras: http://bohwaz.net/photos/2014/02-fevrier/p20140219_193908.jpg (Panasonic Lumix GF5) http://bohwaz.net/photos/2014/01-janvier/p20140117_080901.jpg (Nokia E7 phone) http://bohwaz.net/photos/2014/01-janvier/12-Val_Suzon/p20140112_140758.jpg (Fujifilm HS20 EXR) Test script: --------------- var_dump(strlen(exif_thumbnail("http://www.exiv2.org/include/img_1771.jpg"))); Expected result: ---------------- int(5448) Actual result: -------------- PHP Warning: exif_thumbnail(img_1771.jpg): IFD data bad offset: 0xFFFFFC52 length 0x01C2 in Command line code on line 1 Warning: exif_thumbnail(img_1771.jpg): IFD data bad offset: 0xFFFFFC52 length 0x01C2 in Command line code on line 1 int(0) ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=72819&edit=1