[digikam] [Bug 359505] New: Image deleted after applying tag

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https://bugs.kde.org/show_bug.cgi?id=359505

            Bug ID: 359505
           Summary: Image deleted after applying tag
           Product: digikam
           Version: 4.14.0
          Platform: Ubuntu Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: critical
          Priority: NOR
         Component: Metadata
          Assignee: [hidden email]
          Reporter: [hidden email]

I'm experiencing a problem when I try to add/modify exif/iptc and other
metadata tags
This is a very strange and dangerous isn'it?
My environment is:
Ubuntu 14.04 xamd64
Linux 3.13.0-77-generic #121-Ubuntu SMP Wed Jan 20 10:50:42 UTC 2016 x86_64
GNU/Linux
digikam 4:4.14.0-trusty~ppa1
Since digiKam use external libraries to manage metadata (Exiv2) I would like to
involve exiv2 people clicking on Exiv2 library bugs and wishes on your support
page  
but I can't do it because the link dev.robotbattle.com/bugs/my_view_page.php
dosen't work.

Could you help me to find this destructive problem?
If you need more info or more test tell me that.
Waiting your help I send you my best regards
Antonio

Reproducible: Always

Steps to Reproduce:
1.Open digikam and select an image
2.try to change anything metadata
3.click on apply button

Actual Results:  
the selected file will be deleted

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           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Metadata                    |Metadata-Engine
                 CC|                            |[hidden email]

--- Comment #1 from [hidden email] ---
turn on debug space with kdebugdialog and run digiKAm from a console. Look
trace printed while the destructive action.

See this page for details :

https://www.digikam.org/contrib

Gilles Caulier

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--- Comment #2 from antonio <[hidden email]> ---
Thank you Gilles.
Waiting your help I disabled writing metadata into image and I enable writing
them to sidecar file just to avoid unwanted effect. That work well.
Now, in order to follow your suggestion, I have restore the initial setting:
label into images, caption and titles and template (copyright etc)
Now I can reproduce the bug because now all it working, I don't know wy, Well!!
If problem appears again I'll put in action your suggestion.
Many thanks for you help
Best regards
Antonio

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           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |WORKSFORME

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--- Comment #3 from antonio <[hidden email]> ---
Hi Gill,
the problem isn't solved yet.
the requested entries of kdebugdialog, during wrong operation, are:
digikam(4608)/KEXIV2 KExiv2Iface::KExiv2::getIptcKeywords:
"/home/antonio/Immagini/img/IMG_0092.JPG"  ==> Read Iptc Keywords:  ()
digikam(4608)/KEXIV2 KExiv2Iface::KExiv2::setIptcKeywords:
"/home/antonio/Immagini/img/IMG_0092.JPG"  ==> New Iptc Keywords:  ("Isole
Eolie")
digikam(4608)/KEXIV2 KExiv2Iface::KExiv2::save: KExiv2::metadataWritingMode 0
digikam(4608)/KEXIV2 KExiv2Iface::KExiv2::save: Will write Metadata to file
"IMG_0092.JPG"
digikam(4608)/KEXIV2 KExiv2Iface::KExiv2::Private::saveOperations:
wroteComment:  true
digikam(4608)/KEXIV2 KExiv2Iface::KExiv2::Private::saveOperations: wroteEXIF:
true
digikam(4608)/KEXIV2 KExiv2Iface::KExiv2::Private::saveOperations: wroteIPTC:
true
digikam(4608)/KEXIV2 KExiv2Iface::KExiv2::Private::saveOperations: wroteXMP:
true
digikam(4608)/KEXIV2 KExiv2Iface::KExiv2::Private::saveOperations: File time
stamp restored
digikam(4608)/KEXIV2 KExiv2Iface::KExiv2::save: Metadata for file
"IMG_0092.JPG" written to file.
If I undersand well all operations are completed w/o errors!
Today I add a new ubuntu user and, surprise, digikam, on that user,  seems to
work like a charm.
I'll test for a wile just to bew sure that it isn't a false test.
Many thanks and best regards
Antonio

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           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|WORKSFORME                  |---
             Status|RESOLVED                    |UNCONFIRMED

--- Comment #4 from antonio <[hidden email]> ---
I'm sorry I put wron status

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--- Comment #5 from [hidden email] ---
digiKam handle Exiv2 C++ exception when there are generated of course. If Exiv2
has an error not wrapped by exception handler, no error will be printed on the
console or on GUI by digiKam.

In all case, digiKam do not touch files while metadata management. All is
delegate to Exvi2. If files are corrupted, this is an abnormal issue from
Exiv2.

Gilles Caulier

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--- Comment #6 from [hidden email] ---
Another tips : Do not mix different Exiv2 version on your system (shared libs).
I remember strange issue in this configuration. Only last 0.25 must be
installed and digiKam compiled with it (look in Help/Components Info dialog for
details)

Gilles Caulier

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--- Comment #7 from [hidden email] ---
(In reply to antonio from comment #0)

Hello
Is this an SQLite or MySQL specific error?

I tried to reproduce the same using both MySQL Internal & Server:
1)Open digiKam and select an image.
2) Ctrl+Shift+M to Edit Metatdata.
3)Under EXIF/IPTC tag, edit.
4)Click on Apply.

This way I'm able to modify the metadata and the image isn't deleted.

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--- Comment #8 from [hidden email] ---
swati,

This entry is not relevant to database, but to low level metadata engine which
write information to image file as well (Exiv2 interface)

Gilles Caulier

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--- Comment #9 from [hidden email] ---
Right.

So does this have something to do with Exiv version incompatibility? (digiKam
supports libexiv2 version >=0.25 )

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           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |WORKSFORME

--- Comment #10 from [hidden email] ---
As Swati, with digiKam 5.0.0-beta6, the problem is not reproducible here. I use
Exiv2 0.25.

So, i close this file as WORKFORME. If problem remain, don't hesitate to
re-open and comment.

Gilles Caulier

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           What    |Removed                     |Added
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   Version Fixed In|                            |5.0.0

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