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[stable13] If the preview is size 0 it is invalid #8030

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Merged
MorrisJobke merged 1 commit into from
Jan 24, 2018
Merged

[stable13] If the preview is size 0 it is invalid #8030

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16 changes: 13 additions & 3 deletions lib/private/Preview/Generator.php
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Original file line number Diff line number Diff line change
Expand Up @@ -110,6 +110,11 @@ public function getPreview(File $file, $width = -1, $height = -1, $crop = false,

// Get the max preview and infer the max preview sizes from that
$maxPreview = $this->getMaxPreview($previewFolder, $file, $mimeType);
if ($maxPreview->getSize() === 0) {
$maxPreview->delete();
throw new NotFoundException('Max preview size 0, invalid!');
}

list($maxWidth, $maxHeight) = $this->getPreviewSize($maxPreview);

// If both width and heigth are -1 we just want the max preview
Expand All @@ -129,15 +134,20 @@ public function getPreview(File $file, $width = -1, $height = -1, $crop = false,
// Try to get a cached preview. Else generate (and store) one
try {
try {
$file = $this->getCachedPreview($previewFolder, $width, $height, $crop, $maxPreview->getMimeType());
$preview = $this->getCachedPreview($previewFolder, $width, $height, $crop, $maxPreview->getMimeType());
} catch (NotFoundException $e) {
$file = $this->generatePreview($previewFolder, $maxPreview, $width, $height, $crop, $maxWidth, $maxHeight);
$preview = $this->generatePreview($previewFolder, $maxPreview, $width, $height, $crop, $maxWidth, $maxHeight);
}
} catch (\InvalidArgumentException $e) {
throw new NotFoundException();
}

return $file;
if ($preview->getSize() === 0) {
$preview->delete();
throw new NotFoundException('Cached preview size 0, invalid!');
}

return $preview;
}

/**
Expand Down