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media assets: fix dimensions of corrupt GIFs.

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Fix certain corrupt GIFs returning dimensions of 0x0. This happened
when the GIF was too corrupt for libvips to read. Fixed by using
ExifTool to read the dimensions instead.

Also add validations to ensure that it's not possible to have media
assets with a width or height of 0.
This commit is contained in:
evazion
2022-10-31 03:23:02 -05:00
parent e6ebc54b6c
commit 2f2c73eebb
4 changed files with 15 additions and 0 deletions
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3
app/models/media_asset.rb
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@@ -45,6 +45,9 @@ class MediaAsset < ApplicationRecord
validates :md5, uniqueness: { conditions: -> { where(status: [:processing, :active]) } }, if: :md5_changed?
validates :file_ext, inclusion: { in: FILE_TYPES, message: "File is not an image or video" }
validates :file_key, length: { is: FILE_KEY_LENGTH }, uniqueness: true, if: :file_key_changed?
validates :file_size, comparison: { greater_than: 0 }, if: :file_size_changed?
validates :image_width, comparison: { greater_than: 0 }, if: :image_width_changed?
validates :image_height, comparison: { greater_than: 0 }, if: :image_height_changed?
before_create :initialize_file_key