mirror of
https://github.com/discourse/discourse.git
synced 2024-11-26 19:00:32 -06:00
110 lines
3.4 KiB
Ruby
110 lines
3.4 KiB
Ruby
require_dependency 'letter_avatar'
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class UserAvatarsController < ApplicationController
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DOT = Base64.decode64("R0lGODlhAQABALMAAAAAAIAAAACAAICAAAAAgIAAgACAgMDAwICAgP8AAAD/AP//AAAA//8A/wD//wBiZCH5BAEAAA8ALAAAAAABAAEAAAQC8EUAOw==")
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skip_before_filter :preload_json, :redirect_to_login_if_required, :check_xhr, :verify_authenticity_token, only: [:show, :show_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: { upload_id: user.user_avatar.gravatar_upload_id }
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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_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_dot 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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expires_in 1.year, public: true
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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(RailsMultisite::ConnectionManagement.current_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_dot unless user = User.find_by(username_lower: username.downcase)
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version = params[:version].to_i
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return render_dot unless version > 0 && user_avatar = user.user_avatar
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size = params[:size].to_i
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return render_dot if size < 8 || size > 500
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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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return redirect_to cdn_path("/user_avatar/#{params[:hostname]}/#{user.username_lower}/#{closest}/#{version}.png")
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end
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upload = Upload.find_by(id: version) if user_avatar.contains_upload?(version)
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upload ||= user.uploaded_avatar if user.uploaded_avatar_id == version
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if user.uploaded_avatar && !upload
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return redirect_to cdn_path("/user_avatar/#{hostname}/#{user.username_lower}/#{size}/#{user.uploaded_avatar_id}.png")
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elsif upload
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original = Discourse.store.path_for(upload)
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if Discourse.store.external? || File.exists?(original)
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if optimized = get_optimized_image(upload, size)
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unless optimized.local?
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expires_in 1.day, public: true
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return redirect_to optimized.url
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end
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image = Discourse.store.path_for(optimized)
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end
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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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expires_in 1.year, public: true
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send_file image, disposition: nil
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else
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render_dot
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end
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end
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# this protects us from a DoS
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def render_dot
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expires_in 10.minutes, public: true
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render text: DOT, content_type: "image/png"
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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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allow_animation: SiteSetting.allow_animated_avatars
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)
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end
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end
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