mirror of
https://github.com/discourse/discourse.git
synced 2024-12-01 01:15:47 +08:00
278 lines
8.8 KiB
Ruby
278 lines
8.8 KiB
Ruby
require "digest/sha1"
|
|
require_dependency "image_sizer"
|
|
require_dependency "file_helper"
|
|
require_dependency "url_helper"
|
|
require_dependency "db_helper"
|
|
require_dependency "validators/upload_validator"
|
|
require_dependency "file_store/local_store"
|
|
|
|
class Upload < ActiveRecord::Base
|
|
belongs_to :user
|
|
|
|
has_many :post_uploads, dependent: :destroy
|
|
has_many :posts, through: :post_uploads
|
|
|
|
has_many :optimized_images, dependent: :destroy
|
|
|
|
validates_presence_of :filesize
|
|
validates_presence_of :original_filename
|
|
|
|
validates_with ::Validators::UploadValidator
|
|
|
|
def thumbnail(width = self.width, height = self.height)
|
|
optimized_images.find_by(width: width, height: height)
|
|
end
|
|
|
|
def has_thumbnail?(width, height)
|
|
thumbnail(width, height).present?
|
|
end
|
|
|
|
def create_thumbnail!(width, height)
|
|
return unless SiteSetting.create_thumbnails?
|
|
|
|
thumbnail = OptimizedImage.create_for(
|
|
self,
|
|
width,
|
|
height,
|
|
filename: self.original_filename,
|
|
allow_animation: SiteSetting.allow_animated_thumbnails
|
|
)
|
|
|
|
if thumbnail
|
|
optimized_images << thumbnail
|
|
self.width = width
|
|
self.height = height
|
|
save(validate: false)
|
|
end
|
|
end
|
|
|
|
def destroy
|
|
Upload.transaction do
|
|
Discourse.store.remove_upload(self)
|
|
super
|
|
end
|
|
end
|
|
|
|
def extension
|
|
File.extname(original_filename)
|
|
end
|
|
|
|
# list of image types that will be cropped
|
|
CROPPED_IMAGE_TYPES ||= %w{avatar profile_background card_background}
|
|
|
|
# options
|
|
# - content_type
|
|
# - origin
|
|
# - image_type
|
|
def self.create_for(user_id, file, filename, filesize, options = {})
|
|
DistributedMutex.synchronize("upload_#{user_id}_#{filename}") do
|
|
# do some work on images
|
|
if FileHelper.is_image?(filename) && system("identify '#{file.path}' >/dev/null 2>&1")
|
|
if filename =~ /\.svg$/i
|
|
svg = Nokogiri::XML(file).at_css("svg")
|
|
w = svg["width"].to_i
|
|
h = svg["height"].to_i
|
|
else
|
|
# fix orientation first
|
|
fix_image_orientation(file.path) if should_optimize?(file.path)
|
|
# retrieve image info
|
|
image_info = FastImage.new(file) rescue nil
|
|
w, h = *(image_info.try(:size) || [0, 0])
|
|
end
|
|
|
|
# default size
|
|
width, height = ImageSizer.resize(w, h)
|
|
|
|
# make sure we're at the beginning of the file (both FastImage and Nokogiri move the pointer)
|
|
file.rewind
|
|
|
|
# crop images depending on their type
|
|
if CROPPED_IMAGE_TYPES.include?(options[:image_type])
|
|
allow_animation = SiteSetting.allow_animated_thumbnails
|
|
max_pixel_ratio = Discourse::PIXEL_RATIOS.max
|
|
|
|
case options[:image_type]
|
|
when "avatar"
|
|
allow_animation = SiteSetting.allow_animated_avatars
|
|
width = height = Discourse.avatar_sizes.max
|
|
OptimizedImage.resize(file.path, file.path, width, height, filename: filename, allow_animation: allow_animation)
|
|
when "profile_background"
|
|
max_width = 850 * max_pixel_ratio
|
|
width, height = ImageSizer.resize(w, h, max_width: max_width, max_height: max_width)
|
|
OptimizedImage.downsize(file.path, file.path, "#{width}x#{height}", filename: filename, allow_animation: allow_animation)
|
|
when "card_background"
|
|
max_width = 590 * max_pixel_ratio
|
|
width, height = ImageSizer.resize(w, h, max_width: max_width, max_height: max_width)
|
|
OptimizedImage.downsize(file.path, file.path, "#{width}x#{height}", filename: filename, allow_animation: allow_animation)
|
|
end
|
|
end
|
|
|
|
# optimize image (except GIFs and large PNGs)
|
|
if should_optimize?(file.path)
|
|
ImageOptim.new.optimize_image!(file.path) rescue nil
|
|
# update the file size
|
|
filesize = File.size(file.path)
|
|
end
|
|
end
|
|
|
|
# compute the sha of the file
|
|
sha1 = Digest::SHA1.file(file).hexdigest
|
|
|
|
# do we already have that upload?
|
|
upload = find_by(sha1: sha1)
|
|
|
|
# make sure the previous upload has not failed
|
|
if upload && (upload.url.blank? || is_dimensionless_image?(filename, upload.width, upload.height))
|
|
upload.destroy
|
|
upload = nil
|
|
end
|
|
|
|
# return the previous upload if any
|
|
return upload unless upload.nil?
|
|
|
|
# create the upload otherwise
|
|
upload = Upload.new
|
|
upload.user_id = user_id
|
|
upload.original_filename = filename
|
|
upload.filesize = filesize
|
|
upload.sha1 = sha1
|
|
upload.url = ""
|
|
upload.width = width
|
|
upload.height = height
|
|
upload.origin = options[:origin][0...1000] if options[:origin]
|
|
|
|
if is_dimensionless_image?(filename, upload.width, upload.height)
|
|
upload.errors.add(:base, I18n.t("upload.images.size_not_found"))
|
|
return upload
|
|
end
|
|
|
|
return upload unless upload.save
|
|
|
|
# store the file and update its url
|
|
File.open(file.path) do |f|
|
|
url = Discourse.store.store_upload(f, upload, options[:content_type])
|
|
if url.present?
|
|
upload.url = url
|
|
upload.save
|
|
else
|
|
upload.errors.add(:url, I18n.t("upload.store_failure", { upload_id: upload.id, user_id: user_id }))
|
|
end
|
|
end
|
|
|
|
upload
|
|
end
|
|
end
|
|
|
|
LARGE_PNG_SIZE ||= 3.megabytes
|
|
|
|
def self.should_optimize?(path)
|
|
# don't optimize GIFs
|
|
return false if path =~ /\.gif$/i
|
|
return true if path !~ /\.png$/i
|
|
image_info = FastImage.new(path) rescue nil
|
|
w, h = *(image_info.try(:size) || [0, 0])
|
|
# don't optimize large PNGs
|
|
w > 0 && h > 0 && w * h < LARGE_PNG_SIZE
|
|
end
|
|
|
|
def self.is_dimensionless_image?(filename, width, height)
|
|
FileHelper.is_image?(filename) && (width.blank? || width == 0 || height.blank? || height == 0)
|
|
end
|
|
|
|
def self.get_from_url(url)
|
|
return if url.blank?
|
|
# we store relative urls, so we need to remove any host/cdn
|
|
url = url.sub(/^#{Discourse.asset_host}/i, "") if Discourse.asset_host.present?
|
|
# when using s3, we need to replace with the absolute base url
|
|
url = url.sub(/^#{SiteSetting.s3_cdn_url}/i, Discourse.store.absolute_base_url) if SiteSetting.s3_cdn_url.present?
|
|
Upload.find_by(url: url)
|
|
end
|
|
|
|
def self.fix_image_orientation(path)
|
|
`convert #{path} -auto-orient #{path}`
|
|
end
|
|
|
|
def self.migrate_to_new_scheme(limit=50)
|
|
problems = []
|
|
|
|
if SiteSetting.migrate_to_new_scheme
|
|
max_file_size_kb = [SiteSetting.max_image_size_kb, SiteSetting.max_attachment_size_kb].max.kilobytes
|
|
local_store = FileStore::LocalStore.new
|
|
|
|
Upload.where("url NOT LIKE '%/original/_X/%'")
|
|
.limit(limit)
|
|
.order(id: :desc)
|
|
.each do |upload|
|
|
begin
|
|
# keep track of the url
|
|
previous_url = upload.url.dup
|
|
# where is the file currently stored?
|
|
external = previous_url =~ /^\/\//
|
|
# download if external
|
|
if external
|
|
url = SiteSetting.scheme + ":" + previous_url
|
|
file = FileHelper.download(url, max_file_size_kb, "discourse", true) rescue nil
|
|
path = file.path
|
|
else
|
|
path = local_store.path_for(upload)
|
|
end
|
|
# compute SHA if missing
|
|
if upload.sha1.blank?
|
|
upload.sha1 = Digest::SHA1.file(path).hexdigest
|
|
end
|
|
# optimize if image
|
|
if FileHelper.is_image?(File.basename(path))
|
|
ImageOptim.new.optimize_image!(path)
|
|
end
|
|
# store to new location & update the filesize
|
|
File.open(path) do |f|
|
|
upload.url = Discourse.store.store_upload(f, upload)
|
|
upload.filesize = f.size
|
|
upload.save
|
|
end
|
|
# remap the URLs
|
|
DbHelper.remap(UrlHelper.absolute(previous_url), upload.url) unless external
|
|
DbHelper.remap(previous_url, upload.url)
|
|
# remove the old file (when local)
|
|
unless external
|
|
FileUtils.rm(path, force: true) rescue nil
|
|
end
|
|
rescue => e
|
|
problems << { upload: upload, ex: e }
|
|
ensure
|
|
file.try(:unlink) rescue nil
|
|
file.try(:close) rescue nil
|
|
end
|
|
end
|
|
end
|
|
|
|
problems
|
|
end
|
|
|
|
end
|
|
|
|
# == Schema Information
|
|
#
|
|
# Table name: uploads
|
|
#
|
|
# id :integer not null, primary key
|
|
# user_id :integer not null
|
|
# original_filename :string not null
|
|
# filesize :integer not null
|
|
# width :integer
|
|
# height :integer
|
|
# url :string not null
|
|
# created_at :datetime not null
|
|
# updated_at :datetime not null
|
|
# sha1 :string(40)
|
|
# origin :string(1000)
|
|
# retain_hours :integer
|
|
#
|
|
# Indexes
|
|
#
|
|
# index_uploads_on_id_and_url (id,url)
|
|
# index_uploads_on_sha1 (sha1) UNIQUE
|
|
# index_uploads_on_url (url)
|
|
# index_uploads_on_user_id (user_id)
|
|
#
|