Hello volare,

Could you post :
- Piwigo version
- PHP version
- values of show_exif and use_exif configuration flags (in local/config/config.inc.php)
- an example of picture with gps data which doesn't work

All the issues I had, or heard of, were either an incorrect piwigo configuration, or a recent major regression in some versions of PHP, or a more long term issue with PHP failing to load the end part of exif data on some particular files (especially after the "maker note" section).

Hi volare,

First, I uploaded your image in my gallery and the GPS coordinates are fine. So no problem with Piwigo or OpenStreetMap.
I use Piwigo 2.8.3 and OSM 2.8.d

For the rest of my post I will be speculating so take it with a grain of salt.

Your version of PHP seeems to be the Ubuntu "Trusty" package of PHP5 with security updates enabled.
Your version dates from October 2016 :
https://launchpad.net/ubuntu/+source/ph … ubuntu4.20
The previous version is from July 2016 :
https://launchpad.net/ubuntu/+source/ph … ubuntu4.19

Now, the major regression I was talking about in PHP was caused by two security fixes on Exif data reading :
https://bugs.php.net/bug.php?id=72618
https://bugs.php.net/bug.php?id=72603
The issue is documented and fixed in PHP in this change :
https://bugs.php.net/bug.php?id=72682

If you look in the change log of the ubuntu packages, the two security fixes were merged into ubuntu in the 5.5.9_4.19 version:
  * SECURITY UPDATE: out of bounds read in exif_process_IFD_in_MAKERNOTE
    - debian/patches/CVE-2016-6291.patch: add more bounds checks to
      ext/exif/exif.c.
    - CVE-2016-6291
  * SECURITY UPDATE: NULL pointer dereference in exif_process_user_comment
    - debian/patches/CVE-2016-6292.patch: properly handle encoding in
      ext/exif/exif.c.
    - CVE-2016-6292

This is where I can only speculate :
I think Ubuntu integrated the security fixes in the PHP version you are using (trusty + security), and with it the regression on EXIF data reading (at the end of Exif data where GPS data is), but didn't integrate the correction of the regression which isn't a "security" fix.
Did your GPS data stop working around July ?

So I'd say, try upgrading your PHP version, if you can, or raising a bug to Ubuntu.

Again, I may be completely wrong :)

I see the pictures that worked are from a different camera, which could also confirm the issue.

Have you tried stripping the MakerNotes section from the image that doesn't work?
For example with exiftool:
exiftool -makernotes:all= File.jpeg

I modified the EXIF data with  pyExifToolGUI (Linux) , removed the makernotes and seems to be fine now .
An modified uploaded pic shows OSM map.
My hoster confirmed , it is a bug in PHP .

greetings

Hi everyone,

I also have issues with GPS data not being read. As I'm a very unskilled person trying to migrate from Menalto Gallery 2 to Piwigo, it's difficult for me to debug anything, but here are following information:

1) GPS data import does not work independently of file type, I tried following:
- RAW files with GPS data in EXIF straight from phone,
- files with lat/long EXIF data added in Menalto Gallery
- files with lat/long and location text in EXIF added in Geosetter

Example photo with GPS data added using Geosetter:
http://mormax.cba.pl/20170115015626-f6b39ecb.jpg

2) output of metadata.php:

Informations are read from 20170115015626-f6b39ecb.jpg

IPTC Fields in 20170115015626-f6b39ecb.jpg

2#000 = 
2#090 = Kędzierzyn-KoŸle
2#092 = Kędzierzyn-KoŸle
2#095 = Opolskie
2#100 = POL
2#101 = Poland


EXIF Fields in 20170115015626-f6b39ecb.jpg

Array
(
    [FileName] => 20170115015626-f6b39ecb.jpg
    [FileDateTime] => 1484443383
    [FileSize] => 214270
    [FileType] => 2
    [MimeType] => image/jpeg
    [SectionsFound] => IFD0
    [COMPUTED] => Array
        (
            [html] => width="900" height="600"
            [Height] => 600
            [Width] => 900
            [IsColor] => 1
            [ByteOrderMotorola] => 0
        )

)

3) when I upload above file to Menalto Gallery 2, GPS data is imported without any issues,

4) Software versions:

Piwigo version

        Piwigo 2.8.5
        Check for upgrade
        Subscribe wkojjnm@jadamspam.pl to Piwigo Announcements Newsletter

Environment

        Operating system: Linux
        PHP: 5.2.17 (Show info) [2017-01-16 21:32:27]
        MySQL: 5.5.5-10.0.28-MariaDB-1.cba [2017-01-16 21:32:27]
        Graphics Library: GD bundled (2.0.34 compatible)

5) local/config/config.inc.php

<?php

/* The file does not exist until some information is entered
below. Once information is entered and saved, the file will be created. */

$conf["show_exif"] = $conf["use_exif"] = true;


?>

I hope that someone has enough time to look at my case,

Thank you in advance.

Hi eliz82,

solution 1 is not applicable due to provider.

I tried to apply solution 2, but my photos did not contain maker notes (apart from those test ones that I uploaded directly from mobile).

I don't know if you managed to open example photo, but if you follow this link you'll see that there is not much in EXIF:
http://mormax.cba.pl/piwigo/picture.php?/441/category/2

So it seems that apart from maker notes there are also another reasons for the script not to work. I also re-uploaded Piwigo 2.8.5 files via FTP, but no change.

eliz82 wrote:

then bad luck, because this require some low to medium skills. if you try make sure you have backups of files and database.

By skills I meant understanding of .php and Piwigo files - means I have no clue how to alter any code myself.

You can also try this simple PHP file which will output all Exif data of your image as seen by PHP:

<?php
$exif = exif_read_data('sample.jpg', 0, true);
echo "sample.jpg:<br />\n";
foreach ($exif as $key => $section) {
    foreach ($section as $name => $val) {
        echo "$key.$name: ";
        print_r($val);
        echo "<br />\n";
    }
}
?>

Output should be for your image :
sample.jpg:
FILE.FileName: sample.jpg
FILE.FileDateTime: 1484775508
FILE.FileSize: 210416
FILE.FileType: 2
FILE.MimeType: image/jpeg
FILE.SectionsFound: ANY_TAG, IFD0, GPS
COMPUTED.html: width="900" height="600"
COMPUTED.Height: 600
COMPUTED.Width: 900
COMPUTED.IsColor: 1
COMPUTED.ByteOrderMotorola: 0
IFD0.GPS_IFD_Pointer: 26
GPS.GPSVersion: 
GPS.GPSLatitudeRef: N
GPS.GPSLatitude: Array ( [0] => 50/1 [1] => 20/1 [2] => 377664/10000 )
GPS.GPSLongitudeRef: E
GPS.GPSLongitude: Array ( [0] => 18/1 [1] => 12/1 [2] => 2275/100 )

Great ! Have fun with Piwigo..