fix imagecreatetruecolor() error

[szaimen]

Fix #26118

Signed-off-by: szaimen szaimen@e.mail.de

[PVince81]

👍

[PVince81]

Failed asserting that 1636558324 is equal to 1636558325 or is greater than 1636558325.

😮

[szaimen]

/backport to stable23

[szaimen]

/backport to stable22

[szaimen]

/backport to stable21

[backportbot-nextcloud]

The backport to stable23 failed. Please do this backport manually.

[backportbot-nextcloud]

The backport to stable22 failed. Please do this backport manually.

[backportbot-nextcloud]

The backport to stable21 failed. Please do this backport manually.

[szaimen]

/backport to stable23

[szaimen]

/backport to stable22

[szaimen]

/backport to stable21

[Littlericket]

@szaimen this doenst catches (i dont know why would somebody has these file sizes but ..)

ValueError: imagecreatetruecolor(): Argument #2 ($height) must be greater than 0 in /var/www/html/lib/private/legacy/OC_Image.php:780
Stack trace:
#0 /var/www/html/lib/private/legacy/OC_Image.php(780): imagecreatetruecolor(107, 4294967144)
#1 /var/www/html/lib/private/legacy/OC_Image.php(616): OC_Image->imagecreatefrombmp('/var/www/html/d...')
#2 /var/www/html/lib/private/Preview/Image.php(52): OC_Image->loadFromFile('/var/www/html/d...')

[stratege1401]

Hello, seem the issue is back on NC23.0.3 and app Previewgenerator 4.0

2022-03-26T19:27:08+00:00 Scanning folder /Benjamin/files/Photo famille/2012-09-23 r An unhandled exception has been thrown: ValueError: imagecreatetruecolor(): Argument #2 ($height) must be greater than 0 in /var/www/html/lib/private/legacy/OC_Image.php:898 Stack trace: #0 /var/www/html/lib/private/legacy/OC_Image.php(898): imagecreatetruecolor() #1 /var/www/html/lib/private/legacy/OC_Image.php(717): OC_Image->imagecreatefrombmp() #2 /var/www/html/lib/private/Preview/Image.php(52): OC_Image->loadFromFile() #3 /var/www/html/lib/private/Preview/GeneratorHelper.php(62): OC\Preview\Image->getThumbnail() #4 /var/www/html/lib/private/Preview/Generator.php(245): OC\Preview\GeneratorHelper->getThumbnail() #5 /var/www/html/lib/private/Preview/Generator.php(140): OC\Preview\Generator->getMaxPreview() #6 /var/www/html/lib/private/PreviewManager.php(227): OC\Preview\Generator->generatePreviews() #7 /var/www/html/apps/previewgenerator/lib/Command/Generate.php(243): OC\PreviewManager->generatePreviews() #8 /var/www/html/apps/previewgenerator/lib/Command/Generate.php(214): OCA\PreviewGenerator\Command\Generate->parseFile() #9 /var/www/html/apps/previewgenerator/lib/Command/Generate.php(212): OCA\PreviewGenerator\Command\Generate->parseFolder() #10 /var/www/html/apps/previewgenerator/lib/Command/Generate.php(212): OCA\PreviewGenerator\Command\Generate->parseFolder() #11 /var/www/html/apps/previewgenerator/lib/Command/Generate.php(192): OCA\PreviewGenerator\Command\Generate->parseFolder() #12 /var/www/html/apps/previewgenerator/lib/Command/Generate.php(138): OCA\PreviewGenerator\Command\Generate->generateUserPreviews() #13 /var/www/html/lib/private/User/Manager.php(656): OCA\PreviewGenerator\Command\Generate->OCA\PreviewGenerator\Command\{closure}() #14 /var/www/html/apps/previewgenerator/lib/Command/Generate.php(139): OC\User\Manager->callForSeenUsers() #15 /var/www/html/3rdparty/symfony/console/Command/Command.php(255): OCA\PreviewGenerator\Command\Generate->execute() #16 /var/www/html/3rdparty/symfony/console/Application.php(1009): Symfony\Component\Console\Command\Command->run() #17 /var/www/html/3rdparty/symfony/console/Application.php(273): Symfony\Component\Console\Application->doRunCommand() #18 /var/www/html/3rdparty/symfony/console/Application.php(149): Symfony\Component\Console\Application->doRun() #19 /var/www/html/lib/private/Console/Application.php(211): Symfony\Component\Console\Application->run() #20 /var/www/html/console.php(99): OC\Console\Application->run() #21 /var/www/html/occ(11): require_once('...')

Tried "dirty trick" from nextcloud/previewgenerator#252
`replace $process = imagecreatetruecolor($width, $height); with this block :

if ($width > 0 and $height > 0){ $process = imagecreatetruecolor($width, $height); } else { $process = false; }`

But it did not work for me ( error on my side maybe)

Thanks...

[Adi-18]

Same here. "dirty trick" from nextcloud/previewgenerator#252 don't works because of cascading failure