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Theme screenshots have their validations: https://github.com/discourse/discourse/blob/main/lib/theme_screenshots_handler.rb#L4 Therefore, validations in `UploadCreator` can be ignored. Currently, the import of system themes is crashing when the value is too low for `SiteSetting.max_image_size_kb` .
89 lines
3.1 KiB
Ruby
89 lines
3.1 KiB
Ruby
# frozen_string_literal: true
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class ThemeScreenshotsHandler
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MAX_THEME_SCREENSHOT_FILE_SIZE = 1.megabyte
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MAX_THEME_SCREENSHOT_DIMENSIONS = [3840, 2160] # 4K resolution
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MAX_THEME_SCREENSHOT_COUNT = 2
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THEME_SCREENSHOT_ALLOWED_FILE_TYPES = %w[.jpg .jpeg .gif .png].freeze
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class ThemeScreenshotError < StandardError
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end
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def initialize(theme)
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@theme = theme
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end
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# Screenshots here come from RemoteTheme.extract_theme_info, which
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# in turn parses the theme about.json file, which is where screenshots
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# are defined.
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def parse_screenshots_as_theme_fields!(screenshots, theme_importer)
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updated_theme_fields = []
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screenshots = Array.wrap(screenshots).take(MAX_THEME_SCREENSHOT_COUNT)
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screenshots.each do |relative_path|
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path = theme_importer.real_path(relative_path)
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next if !path.present?
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screenshot_filename = File.basename(path)
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screenshot_extension = File.extname(path)
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if !THEME_SCREENSHOT_ALLOWED_FILE_TYPES.include?(screenshot_extension)
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raise ThemeScreenshotError,
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I18n.t(
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"themes.import_error.screenshot_invalid_type",
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file_name: screenshot_filename,
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accepted_formats: THEME_SCREENSHOT_ALLOWED_FILE_TYPES.join(","),
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)
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end
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if File.size(path) > MAX_THEME_SCREENSHOT_FILE_SIZE
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raise ThemeScreenshotError,
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I18n.t(
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"themes.import_error.screenshot_invalid_size",
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file_name: screenshot_filename,
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max_size:
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ActiveSupport::NumberHelper.number_to_human_size(MAX_THEME_SCREENSHOT_FILE_SIZE),
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)
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end
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screenshot_width, screenshot_height = FastImage.size(path)
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if (screenshot_width.nil? || screenshot_height.nil?) ||
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screenshot_width > MAX_THEME_SCREENSHOT_DIMENSIONS[0] ||
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screenshot_height > MAX_THEME_SCREENSHOT_DIMENSIONS[1]
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raise ThemeScreenshotError,
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I18n.t(
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"themes.import_error.screenshot_invalid_dimensions",
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file_name: screenshot_filename,
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width: screenshot_width.to_i,
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height: screenshot_height.to_i,
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max_width: MAX_THEME_SCREENSHOT_DIMENSIONS[0],
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max_height: MAX_THEME_SCREENSHOT_DIMENSIONS[1],
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)
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end
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upload =
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RemoteTheme.create_upload(
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theme: @theme,
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path: path,
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relative_path: relative_path,
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skip_validations: true,
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)
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if !upload.errors.empty?
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raise ThemeScreenshotError,
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I18n.t(
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"themes.import_error.screenshot",
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errors: upload.errors.full_messages.join(","),
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)
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end
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screenshot_filename_clean =
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FileHelper.sanitize_filename(screenshot_filename.gsub(screenshot_extension, ""))
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updated_theme_fields << @theme.set_field(
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target: :common,
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name: "screenshot_#{screenshot_filename_clean}",
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type: :theme_screenshot_upload_var,
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upload_id: upload.id,
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)
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end
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updated_theme_fields
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end
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end
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