160 lines
4.6 KiB
Ruby
160 lines
4.6 KiB
Ruby
require "digest/sha1"
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require_dependency "file_helper"
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require_dependency "url_helper"
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require_dependency "db_helper"
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require_dependency "validators/upload_validator"
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require_dependency "file_store/local_store"
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class Upload < ActiveRecord::Base
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belongs_to :user
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has_many :post_uploads, dependent: :destroy
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has_many :posts, through: :post_uploads
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has_many :optimized_images, dependent: :destroy
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attr_accessor :for_group_message
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attr_accessor :for_theme
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attr_accessor :for_private_message
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validates_presence_of :filesize
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validates_presence_of :original_filename
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validates_with ::Validators::UploadValidator
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def thumbnail(width = self.width, height = self.height)
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optimized_images.find_by(width: width, height: height)
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end
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def has_thumbnail?(width, height)
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thumbnail(width, height).present?
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end
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def create_thumbnail!(width, height, crop = false)
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return unless SiteSetting.create_thumbnails?
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opts = {
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filename: self.original_filename,
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allow_animation: SiteSetting.allow_animated_thumbnails,
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crop: crop
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}
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if _thumbnail = OptimizedImage.create_for(self, width, height, opts)
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self.width = width
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self.height = height
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save(validate: false)
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end
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end
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def destroy
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Upload.transaction do
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Discourse.store.remove_upload(self)
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super
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end
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end
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def self.generate_digest(path)
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Digest::SHA1.file(path).hexdigest
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end
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def self.get_from_url(url)
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return if url.blank?
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# we store relative urls, so we need to remove any host/cdn
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url = url.sub(Discourse.asset_host, "") if Discourse.asset_host.present?
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# when using s3, we need to replace with the absolute base url
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url = url.sub(SiteSetting.s3_cdn_url, Discourse.store.absolute_base_url) if SiteSetting.s3_cdn_url.present?
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# always try to get the path
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uri = URI(url) rescue nil
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url = uri.path if uri.try(:scheme)
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Upload.find_by(url: url)
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end
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def self.migrate_to_new_scheme(limit = nil)
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problems = []
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if SiteSetting.migrate_to_new_scheme
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max_file_size_kb = [SiteSetting.max_image_size_kb, SiteSetting.max_attachment_size_kb].max.kilobytes
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local_store = FileStore::LocalStore.new
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scope = Upload.where("url NOT LIKE '%/original/_X/%'").order(id: :desc)
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scope.limit(limit) if limit
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scope.each do |upload|
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begin
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# keep track of the url
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previous_url = upload.url.dup
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# where is the file currently stored?
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external = previous_url =~ /^\/\//
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# download if external
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if external
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url = SiteSetting.scheme + ":" + previous_url
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file = FileHelper.download(
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url,
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max_file_size: max_file_size_kb,
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tmp_file_name: "discourse",
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follow_redirect: true
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) rescue nil
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path = file.path
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else
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path = local_store.path_for(upload)
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end
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# compute SHA if missing
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if upload.sha1.blank?
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upload.sha1 = Upload.generate_digest(path)
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end
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# optimize if image
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FileHelper.optimize_image!(path) if FileHelper.is_image?(File.basename(path))
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# store to new location & update the filesize
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File.open(path) do |f|
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upload.url = Discourse.store.store_upload(f, upload)
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upload.filesize = f.size
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upload.save!
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end
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# remap the URLs
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DbHelper.remap(UrlHelper.absolute(previous_url), upload.url) unless external
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DbHelper.remap(previous_url, upload.url)
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# remove the old file (when local)
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unless external
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FileUtils.rm(path, force: true) rescue nil
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end
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rescue => e
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problems << { upload: upload, ex: e }
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ensure
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file.try(:unlink) rescue nil
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file.try(:close) rescue nil
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end
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end
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end
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problems
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end
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end
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# == Schema Information
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#
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# Table name: uploads
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#
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# id :integer not null, primary key
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# user_id :integer not null
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# original_filename :string not null
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# filesize :integer not null
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# width :integer
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# height :integer
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# url :string not null
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# created_at :datetime not null
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# updated_at :datetime not null
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# sha1 :string(40)
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# origin :string(1000)
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# retain_hours :integer
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#
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# Indexes
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#
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# index_uploads_on_id_and_url (id,url)
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# index_uploads_on_sha1 (sha1) UNIQUE
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# index_uploads_on_url (url)
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# index_uploads_on_user_id (user_id)
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#
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