mirror of
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synced 2024-12-16 01:26:29 +08:00
174 lines
5.3 KiB
Ruby
174 lines
5.3 KiB
Ruby
require_dependency 'letter_avatar'
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class UserAvatarsController < ApplicationController
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skip_before_filter :preload_json, :redirect_to_login_if_required, :check_xhr, :verify_authenticity_token, only: [:show, :show_letter, :show_proxy_letter]
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def refresh_gravatar
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user = User.find_by(username_lower: params[:username].downcase)
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guardian.ensure_can_edit!(user)
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if user
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user.create_user_avatar(user_id: user.id) unless user.user_avatar
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user.user_avatar.update_gravatar!
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render json: {
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gravatar_upload_id: user.user_avatar.gravatar_upload_id,
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gravatar_avatar_template: User.avatar_template(user.username, user.user_avatar.gravatar_upload_id)
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}
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else
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raise Discourse::NotFound
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end
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end
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def show_proxy_letter
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if SiteSetting.external_system_avatars_url !~ /^\/letter_avatar_proxy/
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raise Discourse::NotFound
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end
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params.require(:letter)
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params.require(:color)
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params.require(:version)
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params.require(:size)
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no_cookies
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identity = LetterAvatar::Identity.new
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identity.letter = params[:letter].to_s[0].upcase
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identity.color = params[:color].scan(/../).map(&:hex)
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image = LetterAvatar.generate(params[:letter].to_s, params[:size].to_i, identity: identity)
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response.headers["Last-Modified"] = File.ctime(image).httpdate
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response.headers["Content-Length"] = File.size(image).to_s
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immutable_for(1.year)
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send_file image, disposition: nil
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end
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def show_letter
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params.require(:username)
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params.require(:version)
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params.require(:size)
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no_cookies
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return render_blank if params[:version] != LetterAvatar.version
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image = LetterAvatar.generate(params[:username].to_s, params[:size].to_i)
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response.headers["Last-Modified"] = File.ctime(image).httpdate
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response.headers["Content-Length"] = File.size(image).to_s
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immutable_for(1.year)
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send_file image, disposition: nil
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end
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def show
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no_cookies
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# we need multisite support to keep a single origin pull for CDNs
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RailsMultisite::ConnectionManagement.with_hostname(params[:hostname]) do
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show_in_site(params[:hostname])
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end
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end
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protected
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def show_in_site(hostname)
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username = params[:username].to_s
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return render_blank unless user = User.find_by(username_lower: username.downcase)
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upload_id, version = params[:version].split("_")
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version = (version || OptimizedImage::VERSION).to_i
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return render_blank if version != OptimizedImage::VERSION
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upload_id = upload_id.to_i
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return render_blank unless upload_id > 0 && user_avatar = user.user_avatar
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size = params[:size].to_i
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return render_blank if size < 8 || size > 1000
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if !Discourse.avatar_sizes.include?(size) && Discourse.store.external?
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closest = Discourse.avatar_sizes.to_a.min { |a,b| (size-a).abs <=> (size-b).abs }
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avatar_url = UserAvatar.local_avatar_url(hostname, user.username_lower, upload_id, closest)
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return redirect_to cdn_path(avatar_url)
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end
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upload = Upload.find_by(id: upload_id) if user_avatar.contains_upload?(upload_id)
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upload ||= user.uploaded_avatar if user.uploaded_avatar_id == upload_id
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if user.uploaded_avatar && !upload
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avatar_url = UserAvatar.local_avatar_url(hostname, user.username_lower, user.uploaded_avatar_id, size)
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return redirect_to cdn_path(avatar_url)
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elsif upload && optimized = get_optimized_image(upload, size)
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if optimized.local?
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optimized_path = Discourse.store.path_for(optimized)
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image = optimized_path if File.exists?(optimized_path)
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else
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return proxy_avatar(Discourse.store.cdn_url(optimized.url))
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end
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end
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if image
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response.headers["Last-Modified"] = File.ctime(image).httpdate
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response.headers["Content-Length"] = File.size(image).to_s
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immutable_for 1.year
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send_file image, disposition: nil
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else
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render_blank
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end
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rescue OpenURI::HTTPError
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render_blank
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end
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PROXY_PATH = Rails.root + "tmp/avatar_proxy"
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def proxy_avatar(url)
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if url[0..1] == "//"
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url = (SiteSetting.force_https ? "https:" : "http:") + url
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end
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sha = Digest::SHA1.hexdigest(url)
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filename = "#{sha}#{File.extname(url)}"
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path = "#{PROXY_PATH}/#{filename}"
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unless File.exist? path
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FileUtils.mkdir_p PROXY_PATH
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tmp = FileHelper.download(
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url,
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max_file_size: 1.megabyte,
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tmp_file_name: filename,
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follow_redirect: true,
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read_timeout: 10
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)
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FileUtils.mv tmp.path, path
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end
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# putting a bogus date cause download is not retaining the data
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response.headers["Last-Modified"] = DateTime.parse("1-1-2000").httpdate
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response.headers["Content-Length"] = File.size(path).to_s
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immutable_for(1.year)
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send_file path, disposition: nil
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end
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# this protects us from a DoS
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def render_blank
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path = Rails.root + "public/images/avatar.png"
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expires_in 10.minutes, public: true
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response.headers["Last-Modified"] = DateTime.parse("1-1-2000").httpdate
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response.headers["Content-Length"] = File.size(path).to_s
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send_file path, disposition: nil
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end
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def get_optimized_image(upload, size)
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OptimizedImage.create_for(
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upload,
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size,
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size,
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filename: upload.original_filename,
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allow_animation: SiteSetting.allow_animated_avatars,
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)
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end
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end
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