discourse/app/controllers/uploads_controller.rb

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class UploadsController < ApplicationController
before_filter :ensure_logged_in, except: [:show]
skip_before_filter :check_xhr, only: [:show]
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def create
file = params[:file] || params[:files].first
filesize = File.size(file.tempfile)
upload = Upload.create_for(current_user.id, file.tempfile, file.original_filename, filesize, { content_type: file.content_type })
if current_user.admin?
retain_hours = params[:retain_hours].to_i
if retain_hours > 0
upload.update_columns(retain_hours: retain_hours)
end
end
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if upload.errors.empty?
render_serialized(upload, UploadSerializer, root: false)
else
render status: 422, text: upload.errors.full_messages
end
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end
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def show
return render_404 if !RailsMultisite::ConnectionManagement.has_db?(params[:site])
RailsMultisite::ConnectionManagement.with_connection(params[:site]) do |db|
return render_404 unless Discourse.store.internal?
return render_404 if SiteSetting.prevent_anons_from_downloading_files && current_user.nil?
id = params[:id].to_i
url = request.fullpath
# the "url" parameter is here to prevent people from scanning the uploads using the id
if upload = (Upload.find_by(id: id, url: url) || Upload.find_by(sha1: params[:sha]))
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send_file(Discourse.store.path_for(upload), filename: upload.original_filename)
else
render_404
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end
end
end
protected
def render_404
render nothing: true, status: 404
end
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end