511 lines
13 KiB
Ruby
511 lines
13 KiB
Ruby
require "danbooru_image_resizer/danbooru_image_resizer"
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require "tmpdir"
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class Upload < ActiveRecord::Base
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class Error < Exception ; end
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attr_accessor :file, :image_width, :image_height, :file_ext, :md5, :file_size, :as_pending
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belongs_to :uploader, :class_name => "User"
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belongs_to :post
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before_validation :initialize_uploader, :on => :create
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before_validation :initialize_status, :on => :create
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before_create :convert_cgi_file
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after_destroy :delete_temp_file
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validate :uploader_is_not_limited, :on => :create
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validate :file_or_source_is_present, :on => :create
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validate :rating_given
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attr_accessible :file, :image_width, :image_height, :file_ext, :md5, :file_size, :as_pending, :source, :file_path, :content_type, :rating, :tag_string, :status, :backtrace, :post_id, :md5_confirmation, :parent_id, :server
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module ValidationMethods
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def uploader_is_not_limited
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if !uploader.can_upload?
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self.errors.add(:uploader, uploader.upload_limited_reason)
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return false
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else
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return true
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end
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end
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def file_or_source_is_present
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if file.blank? && source.blank?
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self.errors.add(:base, "Must choose file or specify source")
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return false
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else
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return true
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end
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end
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# Because uploads are processed serially, there's no race condition here.
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def validate_md5_uniqueness
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md5_post = Post.find_by_md5(md5)
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if md5_post
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raise "duplicate: #{md5_post.id}"
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end
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end
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def validate_file_exists
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unless file_path && File.exists?(file_path)
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raise "file does not exist"
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end
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end
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def validate_file_content_type
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unless is_valid_content_type?
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raise "invalid content type (only JPEG, PNG, GIF, SWF, and WebM files are allowed)"
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end
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if is_ugoira? && ugoira_service.empty?
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raise "missing frame data for ugoira"
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end
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end
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def validate_md5_confirmation
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if !md5_confirmation.blank? && md5_confirmation != md5
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raise "md5 mismatch"
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end
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end
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def rating_given
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if rating.present?
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return true
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elsif tag_string =~ /(?:\s|^)rating:([qse])/i
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self.rating = $1.downcase
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return true
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else
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self.errors.add(:base, "Must specify a rating")
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return false
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end
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end
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def validate_no_audio
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if is_video? && video.audio_channels.present?
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raise "video must not have audio channels"
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end
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end
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def validate_video_duration
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if is_video? && video.duration > 120
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raise "video must not be longer than 2 minutes"
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end
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end
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end
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module ConversionMethods
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def process_once
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CurrentUser.scoped(uploader, uploader_ip_addr) do
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update_attribute(:status, "processing")
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if is_downloadable?
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self.source = download_from_source(temp_file_path)
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end
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validate_file_exists
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self.content_type = file_header_to_content_type(file_path)
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self.file_ext = content_type_to_file_ext(content_type)
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validate_file_content_type
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calculate_hash(file_path)
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validate_md5_uniqueness
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validate_md5_confirmation
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validate_no_audio
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validate_video_duration
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calculate_file_size(file_path)
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if has_dimensions?
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calculate_dimensions(file_path)
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end
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generate_resizes(file_path)
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move_file
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save
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post = convert_to_post
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post.distribute_files
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if post.save
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CurrentUser.increment!(:post_upload_count)
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ugoira_service.save_frame_data(post) if is_ugoira?
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update_attributes(:status => "completed", :post_id => post.id)
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else
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update_attribute(:status, "error: " + post.errors.full_messages.join(", "))
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end
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end
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end
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def process!(force = false)
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@tries ||= 0
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return if !force && status =~ /processing|completed|error/
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process_once
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rescue Timeout::Error, Net::HTTP::Persistent::Error => x
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if @tries > 3
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update_attributes(:status => "error: #{x.class} - #{x.message}", :backtrace => x.backtrace.join("\n"))
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else
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@tries += 1
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retry
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end
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rescue Exception => x
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update_attributes(:status => "error: #{x.class} - #{x.message}", :backtrace => x.backtrace.join("\n"))
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ensure
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delete_temp_file
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end
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def async_conversion?
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is_ugoira?
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end
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def ugoira_service
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@ugoira_service ||= PixivUgoiraService.new
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end
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def convert_to_post
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Post.new.tap do |p|
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p.tag_string = tag_string
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p.md5 = md5
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p.file_ext = file_ext
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p.image_width = image_width
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p.image_height = image_height
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p.rating = rating
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p.source = source
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p.file_size = file_size
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p.uploader_id = uploader_id
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p.uploader_ip_addr = uploader_ip_addr
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p.parent_id = parent_id
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if !uploader.is_contributor? || upload_as_pending?
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p.is_pending = true
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end
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end
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end
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end
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module FileMethods
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def delete_temp_file(path = nil)
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FileUtils.rm_f(path || temp_file_path)
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end
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def move_file
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FileUtils.mv(file_path, md5_file_path)
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end
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def calculate_file_size(source_path)
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self.file_size = File.size(source_path)
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end
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# Calculates the MD5 based on whatever is in temp_file_path
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def calculate_hash(source_path)
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self.md5 = Digest::MD5.file(source_path).hexdigest
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end
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def is_image?
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%w(jpg gif png).include?(file_ext)
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end
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def is_flash?
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%w(swf).include?(file_ext)
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end
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def is_video?
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%w(webm).include?(file_ext)
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end
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def is_ugoira?
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%w(zip).include?(file_ext)
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end
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end
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module ResizerMethods
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def generate_resizes(source_path)
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generate_resize_for(Danbooru.config.small_image_width, Danbooru.config.small_image_width, source_path, 85)
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if is_image? && image_width > Danbooru.config.large_image_width
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generate_resize_for(Danbooru.config.large_image_width, nil, source_path)
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end
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end
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def generate_video_preview_for(width, height, output_path)
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dimension_ratio = image_width.to_f / image_height
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if dimension_ratio > 1
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height = (width / dimension_ratio).to_i
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else
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width = (height * dimension_ratio).to_i
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end
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video.screenshot(output_path, {:seek_time => 0, :resolution => "#{width}x#{height}"})
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FileUtils.chmod(0664, output_path)
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end
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def generate_resize_for(width, height, source_path, quality = 90)
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unless File.exists?(source_path)
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raise Error.new("file not found")
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end
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output_path = resized_file_path_for(width)
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if is_image?
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Danbooru.resize(source_path, output_path, width, height, quality)
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elsif is_ugoira?
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# by the time this runs we'll have moved source_path to md5_file_path
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ugoira_service.generate_resizes(md5_file_path, resized_file_path_for(Danbooru.config.large_image_width), resized_file_path_for(Danbooru.config.small_image_width))
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elsif is_video?
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generate_video_preview_for(width, height, output_path)
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end
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end
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end
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module DimensionMethods
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# Figures out the dimensions of the image.
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def calculate_dimensions(file_path)
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if is_video?
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self.image_width = video.width
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self.image_height = video.height
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elsif is_ugoira?
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ugoira_service.calculate_dimensions(file_path)
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self.image_width = ugoira_service.width
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self.image_height = ugoira_service.height
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else
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File.open(file_path, "rb") do |file|
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image_size = ImageSpec.new(file)
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self.image_width = image_size.width
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self.image_height = image_size.height
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end
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end
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end
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# Does this file have image dimensions?
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def has_dimensions?
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%w(jpg gif png swf webm zip).include?(file_ext)
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end
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end
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module ContentTypeMethods
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def is_valid_content_type?
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file_ext =~ /jpg|gif|png|swf|webm|zip/
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end
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def content_type_to_file_ext(content_type)
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case content_type
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when "image/jpeg"
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"jpg"
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when "image/gif"
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"gif"
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when "image/png"
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"png"
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when "application/x-shockwave-flash"
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"swf"
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when "video/webm"
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"webm"
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when "application/zip"
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"zip"
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else
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"bin"
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end
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end
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def file_header_to_content_type(source_path)
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case File.read(source_path, 10)
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when /^\xff\xd8/n
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"image/jpeg"
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when /^GIF87a/, /^GIF89a/
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"image/gif"
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when /^\x89PNG\r\n\x1a\n/n
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"image/png"
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when /^CWS/, /^FWS/, /^ZWS/
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"application/x-shockwave-flash"
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when /^\x1a\x45\xdf\xa3/
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"video/webm"
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when /^PK\x03\x04/
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"application/zip"
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else
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"application/octet-stream"
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end
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end
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end
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module FilePathMethods
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def md5_file_path
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prefix = Rails.env == "test" ? "test." : ""
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"#{Rails.root}/public/data/#{prefix}#{md5}.#{file_ext}"
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end
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def resized_file_path_for(width)
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prefix = Rails.env == "test" ? "test." : ""
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case width
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when Danbooru.config.small_image_width
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"#{Rails.root}/public/data/preview/#{prefix}#{md5}.jpg"
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when Danbooru.config.large_image_width
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"#{Rails.root}/public/data/sample/#{Danbooru.config.large_image_prefix}#{prefix}#{md5}.#{large_file_ext}"
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end
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end
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def large_file_ext
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if is_ugoira?
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"webm"
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else
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"jpg"
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end
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end
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def temp_file_path
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@temp_file_path ||= File.join(Rails.root, "tmp", "upload_#{Time.now.to_f}.#{Process.pid}")
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end
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end
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module DownloaderMethods
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# Determines whether the source is downloadable
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def is_downloadable?
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source =~ /^https?:\/\// && file_path.blank?
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end
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# Downloads the file to destination_path
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def download_from_source(destination_path)
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self.file_path = destination_path
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download = Downloads::File.new(source, destination_path)
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download.download!
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ugoira_service.load(download.data)
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download.source
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end
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end
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module CgiFileMethods
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def convert_cgi_file
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return if file.blank? || file.size == 0
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self.file_path = temp_file_path
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if file.respond_to?(:tempfile) && file.tempfile
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FileUtils.cp(file.tempfile.path, file_path)
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else
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File.open(file_path, 'wb') do |out|
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out.write(file.read)
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end
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end
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FileUtils.chmod(0664, file_path)
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end
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end
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module StatusMethods
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def initialize_status
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self.status = "pending"
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end
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def is_pending?
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status == "pending"
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end
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def is_processing?
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status == "processing"
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end
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def is_completed?
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status == "completed"
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end
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def is_duplicate?
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status =~ /duplicate/
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end
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def duplicate_post_id
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@duplicate_post_id ||= status[/duplicate: (\d+)/, 1]
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end
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end
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module UploaderMethods
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def initialize_uploader
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self.uploader_id = CurrentUser.user.id
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self.uploader_ip_addr = CurrentUser.ip_addr
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end
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def uploader_name
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User.id_to_name(uploader_id)
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end
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end
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module VideoMethods
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def video
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@video ||= FFMPEG::Movie.new(file_path)
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end
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end
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module SearchMethods
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def uploaded_by(user_id)
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where("uploader_id = ?", user_id)
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end
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def pending
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where(:status => "pending")
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end
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def search(params)
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q = where("true")
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return q if params.blank?
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if params[:uploader_id].present?
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q = q.uploaded_by(params[:uploader_id].to_i)
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end
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if params[:uploader_name].present?
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q = q.where("uploader_id = (select _.id from users _ where lower(_.name) = ?)", params[:uploader_name].mb_chars.downcase)
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end
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if params[:source].present?
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q = q.where("source = ?", params[:source])
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end
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q
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end
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end
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module ApiMethods
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def serializable_hash(options = {})
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options ||= {}
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options[:except] ||= []
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options[:except] += hidden_attributes
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unless options[:builder]
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options[:methods] ||= []
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options[:methods] += [:uploader_name]
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end
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hash = super(options)
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hash
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end
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def to_xml(options = {}, &block)
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options ||= {}
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options[:methods] ||= []
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options[:methods] += [:uploader_name]
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super(options, &block)
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end
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end
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include ConversionMethods
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include ValidationMethods
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include FileMethods
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include ResizerMethods
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include DimensionMethods
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include ContentTypeMethods
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include DownloaderMethods
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include FilePathMethods
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include CgiFileMethods
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include StatusMethods
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include UploaderMethods
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include VideoMethods
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extend SearchMethods
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include ApiMethods
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def presenter
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@presenter ||= UploadPresenter.new(self)
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end
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def upload_as_pending?
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as_pending == "1"
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end
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end
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